Mechanical guillotine shears HA3121 and guillotine H3121 were created by employees of the design bureau of the Shimanovsky plant, which specializes in the manufacture of forging and pressing units.
1 Basic information about guillotine shears
Such equipment is understood as a cutting tool with an inclined type knife for transverse and longitudinal rectilinear cutting of metal sheets. Guillotine shears make it possible to process sheets not only by marking, but also by the side or back stop without marking.
The described devices are usually subdivided depending on the type of drive used on them into:
- hydraulic;
- crank (otherwise called mechanical).
Hydraulic equipment has more power, which can easily cope with steel sheets with a thickness of 6 centimeters. The cutting length of such scissors can exceed 8 meters. Mechanical devices are identical to hydraulic ones in a number of characteristics. At the same time, the former have a different drive system, assuming that the crank device provides movement of the blade in both the upper and lower directions.
The power of machines with a crank mechanism is lower than that of their hydraulic counterparts, therefore they are recommended for cutting workpieces with a thickness of 3 to 8 mm. But the metal processing speed of mechanical shears is higher (up to 56 cuts per minute versus 3-18 for "hydraulics").
In addition, guillotines have a different knife drive scheme (upper). There are cantilever shears with a rotary beam and machines with a straight knife stroke. The former are characterized by the fact that their upper knife moves due to the rotation of the beam around the centers located in the rear and on the side walls of the unit. Since the drive device of this very beam is located in similar installations inside the machine, they are compact in size.
In straight-running guillotines, the blade is connected to the frame. It is able to move down along straight guides due to the operation of two hydraulic cylinders or a crank mechanism. This design makes it possible to change the cutting angle of sheets of different thicknesses. Rotary machines do not allow this. With them, the angle always remains the same as it was set by the manufacturer of the installation.
2 Guillotine shears H3121 - passport and characteristics
The passport of the machine contains the following technical data:
- maximum length of blanks for cutting - 200 cm;
- weight - 7000 kg;
- width (along the back stop) of the cut workpiece - 50 cm;
- brake - belt type;
- the number of edges for cutting - 4 pieces;
- engine power - 18.5 kW;
- the greatest cutting force - 50,000 kgf;
- the number of strokes of the cutting tool - from 40 or more per minute;
- clamping force - 2900 kg;
- distance between racks - 228.5 cm;
- knife inclination (angle) – 2°10".
Knives with a hardness of 54 to 58 HRC for the described guillotine are produced according to the State Standard 5950-73 from steel 6XV2S, 5XV2S, 6XC. Their weight is 4.08 kilograms.
Scissors consist of the following main structural elements:
- drive unit;
- bed;
- lubrication system and electrical equipment;
- clamping and knife beam;
- shutdown clutch;
- protective grille and fences;
- back stop;
- table;
- drive shafts.
The bed is made in a welded form from sheet metal. Three couplers and a working table unite side racks of the machine in one piece. The lower cutting device (knife) is attached to the table. It allows you to set a specific gap value and adjust its value.
The drive of the guillotine is provided through a cylindrical gearbox with two steps and a V-belt drive by the engine. The knife beam of the device through the connecting rods receives movement (reciprocating) from the crankshaft. To balance it, there is a special mechanism of the spring principle of operation (it is called that - a balancer).
The coupling of the unit is made in a rigid form, it has an electromagnet and two veneers (rotary). Its design significantly reduces the operating costs of guillotine shears, as they operate without air supply.
To the desktop, the sheet that is cut is pressed against the rods. The principle of connecting rods with a knife beam allows you to increase the height of the knives by 2 centimeters. This function is very important, as it makes it possible to cut the sheet in the longitudinal direction.
3 Guillotine HA3121 - characteristics and description of scissors
Installation is performed with parameters that meet the requirements Specifications 1983 2-041-1068. This machine is used, made with an upper drive version, most often at the procurement sites of enterprises involved in mechanical engineering.
The knife bar is powered by a 17 kW motor. It is transmitted to the eccentric shaft through a brake clutch, transmission (V-belt), gearbox (has a cylindrical shape). After that, the rotation goes to the crank device and only then to the beam.
The table of the unit with the lower knives attached to it by means of screws rests on the racks. The latter are fastened together, forming a frame. The gap between the lower and upper knives is adjusted by moving the table horizontally.
The knife beam with knives (upper) is a L-shaped welded structure reinforced with stiffeners. Side and front stops attached to the table. The back stop is mounted on the back of the knife beam, it is installed with a screw mechanism.
The pneumatic brake clutch of the friction type is rigidly blocked, it is located on the drive shaft (at its left end). Reduction of dynamic loads and compensation of the weight of the beam (knife) is provided by counterbalancers (pneumatic).
An electric motor is located on the sub-engine plate of the machine, which is pivotally connected to the frame. The brake is mounted on the crankshaft (on its right end). It provides periodic suspension of the machine due to the fact that the pulley is installed eccentrically to the axis of the crankshaft. Braking is possible at the moment when the beam (knife) reaches its upper position (inertia forces neutralize the phenomenon of its running).
Passport for scissors HA3121 gives a description of other components and mechanisms of the guillotine:
- electromagnetic control: the magnet starts functioning at the command of the machine operator (pressing the pedal or the button on the control panel), and its automatic operation is also possible.
- engagement clutch: located in the hub of the wheel (gear) on the crankshaft, consists of locking and working keys, two fixed bushings and springs;
- rear stop: necessary for cutting sheets in the transverse direction, its design provides for cylindrical slats, the movement of which allows you to set the stop line at the required distance from the edge of the cutting tool;
- guard: necessary to protect the rotating parts of the guillotine, it consists of four casings made of 1.6 mm thick steel, they cover the brake mechanism of the unit, the transmission flywheel, the engine pulley and the drive shafts.
TECHNICAL CHARACTERISTICS OF HAND GUILLOTINES NG1250, NG2000:
GUILLOTINE SHEARS MECHANICAL AND PNEUMATIC.
|
Pneumatic guillotine shears HA3214.Shears guillotine, crank HA-3214
|
TECHNICAL CHARACTERISTICS OF THE HA3214 GUILLOTINE (2.5x1600):
|
Knife stroke frequency, min-1: when cutting the largest dimensions of the metal being cut |
|
|
Overall dimensions, mm |
2150 |
|
Weight, kg |
Shears guillotine, crank ND3314.
Guillotine shears, crank ND 3314 designed for cutting sheet metal of maximum section 2.5x1600 mm.
bed guillotine shears ND3314 prefabricated welded structure, consists of two racks connected to each other by a traverse and a coupler. A table rests on the racks and the traverse, to which the lower knives are attached. adjustment of the gap between the knives of the knife beam and the bed is carried out by moving the table with the help of bolts and nuts located on both sides of the table.
On the frame there is an eccentric shaft with eccentrics mounted on it and connecting rods connected to the beam by means of axles.
The knife beam is a rigid welded structure, consisting of vertical, horizontal and inclined sheets. There are two protrusions in the knife beam, with the help of which, when returning to the upper starting position, it raises the pressure beam. During the working stroke, the pressure and knife beams are simultaneously lowered. The clamping of the sheet is carried out due to the force of the compressed springs and the own weight of the beam. The compression force of the springs is adjusted by screws.
The rear stop is manual. On request, a drive stop or a drive stop with DRO is installed. To read the amount of movement of the rear stop, a ruler is fixed on the rail. When working without a stop, in the case when the width of the cut sheets is more than 600 mm, the ruler with levers rises and fits on the horizontal edge of the cutter beam. The side stop is designed to determine the beginning of the cut and obtain rectangular blanks.
TECHNICAL CHARACTERISTICS OF THE GUILLOTINE ND3314 (2.5x1600):
|
Thickness of material being cut with tensile strength σvr ≤ 500 MPa, mm |
|
|
Width (maximum) of cut sheets, mm |
|
|
Frequency of knife strokes, idle, min.-1 |
|
|
Angle of inclination of the movable knife, α |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
2400 |
|
Weight, kg |
 |
Pneumatic guillotine shears HA3216.Guillotine shears, HA-3216 designed for cutting sheet material with the largest cross-sectional dimension of 2.5 x 1600 mm. Guillotine bed scissors HA3216 prefabricated welded structure. The gap between the knives of the knife beam and the bed is carried out by moving the table with the help of bolts located on both sides of the table.
|
TECHNICAL CHARACTERISTICS OF THE HA3316 GUILLOTINE (4х1600):
|
Thickness of material being cut with tensile strength σvr ≤ 500 MPa, mm |
|
|
Width (maximum) of cut sheets, mm |
|
|
Frequency of knife strokes, idle, min.-1 |
|
|
Knife stroke, min.-1, when cutting the largest dimensions of the metal being cut, mm |
|
|
Angle of inclination of the movable knife, α |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
2610 |
|
Weight, kg |
 |
Pneumatic guillotine shears ND3316.Guillotine shears, crank ND 3316 designed for cutting sheet material with a tensile strength of 500 MPa and a maximum cross-sectional dimension of 4 x 2000 mm. Scissors are widely used in the procurement workshops of mechanical engineering, automotive and tractor manufacturing, aircraft manufacturing, agricultural engineering and other industries. |
TECHNICAL CHARACTERISTICS OF THE GUILLOTINE ND3316 (4х1600):
|
Thickness of material being cut with tensile strength σvr ≤ 500 MPa, mm |
|
|
Width (maximum) of cut sheets, mm |
|
|
Frequency of knife strokes, idle, min.-1 |
|
|
Angle of inclination of the movable knife, α |
|
|
Length of the sheet cut with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Clear distance between posts, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
2850 |
|
Weight, kg |
 |
Guillotine shears NG-4/2.5.Installation for cutting sheet and profile material model NG4 / 2.5 designed for cutting sheet and profile material with a temporary resistance of 500 MPa. The unit has a climatic version UHL4 in accordance with GOST 15150-69 and is designed for operation in rooms with a temperature environment from +1 o C to +35 o C, rel. air humidity 80% at a temperature of +25 ° C. |
TECHNICAL CHARACTERISTICS OF THE NG-4x2.5 GUILLOTINE:
|
The greatest thickness of the cut sheet with a temporary resistance of 500 MPa, mm, no more |
|
|
No more |
|
|
Knife stroke, mm |
|
|
Clamping force, kN, not less than |
|
|
Electric motor power, kW |
|
|
Working mode |
single cycle, |
|
Control |
Manual, pedal |
|
Installation weight, kg |
TECHNICAL CHARACTERISTICS OF THE NK3416 GUILLOTINE:
| Thickness of metal with tensile strength 500 MPa (50 kgf/mm²), mm | 4 |
| Metal width, mm | 2000 |
| Width of the strip cut off at the rear stop, mm | 700 |
| Moving knife angle | 1°30" |
| Cutting force, kN | 78 |
| Clamping force, kN | 19,5 |
| Knife stroke frequency, min -1 | 68 |
| Total power of electric motors of the main drive, kW | 11,2 |
| Speed of electric motors of the main drive, min -1 | 1395 |
| Power of the electric motor of the rear stop drive, kW | 0,37 |
| The frequency of revolutions of the electric motor of the rear stop drive, min -1 | 1360 |
| Mains voltage, V (50 Hz) | 380 |
| Overall dimensions, mm | 2610x1725x1510 |
| Weight, kg | 2870 |
TECHNICAL CHARACTERISTICS OF STD9AN GUILLOTINE:
|
Dimensions of the metal being cut with a tensile strength of 500 MPa |
|||
|
Knife stroke frequency, min., not less than |
|||
|
Knife stroke, mm |
|||
|
The angle of inclination of the movable knife, no more |
|||
|
Nominal pressure beam force, kN |
|||
|
The maximum width of the strip cut off at the rear stop, mm |
|||
|
Distance from the floor level to the upper edge of the lower knife, mm |
|||
|
Overall dimensions, mm |
3410 |
2910 |
3410 |
|
Weight, kg, no more |
|||
|
Electric motor, type |
High slip |
||
|
power, kWt |
|||
|
RPM |
|||
|
Power circuit voltage, V |
|||
Guillotine shears ND3318.Pneumatic guillotine shears ND 3318 designed for cutting sheet material with the largest cross-sectional dimension of 4x2000 mm. Guillotines ND3318 are widely used in the procurement workshops of machine building, automotive and tractor building, aircraft building and other industries. Lubrication system and electrical equipment of pneumatic guillotines ND3318 allows you to work at low temperatures, which is impossible when working with hydraulic counterparts.
|
TECHNICAL CHARACTERISTICS OF GUILLOTINE SHEARS ND-3318:
|
Thickness of material being cut with tensile strength σvr ≤ 500 MPa, mm |
|
|
Width (maximum) of cut sheets, mm |
|
|
Knife stroke frequency, idle, min.-1 |
|
|
Angle of inclination of the movable knife, α |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
3125 |
|
Weight, kg |
TECHNICAL CHARACTERISTICS OF THE GUILLOTINE NG-6.3, NG-6.3x2.5, NG-6.3x3:
|
NG-6.3 |
NG-6.3/2.5 |
NG-6.3/3 |
|
|
The greatest thickness of the cut sheet with a temporary resistance of 500 MPa, mm |
|||
|
Width of cut sheets, mm, no more |
|||
|
The size of the cut corner, mm |
|||
|
Knife stroke, mm |
|||
|
Clamping force, kN, not less than |
|||
|
Length of the sheet cut with a stop, mm, no more |
|||
|
Electric motor power, kW |
|||
|
Cutting angle on the side stop |
|||
|
Working mode |
single cycle, |
single cycle, |
single cycle, |
|
Control |
Manual, pedal |
Manual, pedal |
Manual, pedal |
|
Installation weight, kg |
 |
Guillotine shears H-3118.Guillotine shears H3118 made with top drive. For measured cutting of strips, the guillotine is equipped with a back stop mounted on the back side of the knife beam.
|
TECHNICAL CHARACTERISTICS OF THE H3118 GUILLOTINE:
|
Width (maximum) of cut sheets, mm |
|
|
Frequency of knife strokes, idle, min.-1 |
|
|
Knife stroke, mm |
|
|
Number of cutting edges of the knife |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Clear distance between posts, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
3000 |
|
Weight, kg |
 |
Crank guillotine shears NKCh-6020.Crank guillotine shears NKCH6020 designed for cutting sheet material with a tensile strength of 500 MPa (50 kgf / mm 2) and the largest cross-sectional size of 6x2500mm. Electromechanical drive with rigid clutch. Cutting is carried out along the stop or markup. Possibility of cutting round, square and angle products by installing special knives. The gears and the engagement clutch operate in an oil bath.
|
TECHNICAL CHARACTERISTICS OF THE GUILLOTINE NKCh 6020:
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
|
|
Width (maximum) of cut sheets, mm |
|
|
Frequency of knife strokes, idle, min.-1 |
|
|
Knife stroke, mm |
|
|
Number of cutting edges of the knife |
|
|
The angle of inclination of the movable knife, hail. |
1 about 20" |
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Clear distance between posts, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
3400 |
|
Weight, kg |
 |
Guillotine shears NK-3418 (sheet 6.3x2000 mm).Crank sheet shears with an inclined knife NK3418 designed for cutting sheet metal with a tensile strength of 500 MPa and with the largest cross-sectional dimensions of 6.3x2000 mm.It is also possible to cut non-metallic sheet materials, eliminating the rapid blunting of the cutting edges of knives and cracking of the sheet being cut.
|
Pneumomechanical guillotine shears NK-3418 are widely used in blanking shops of machine-building, auto-tractor building, aircraft building, shipbuilding, agricultural engineering and other industries, as they have higher productivity due to the lack of preparatory time for readjusting the cutting mechanism for different thicknesses of the cut metal and mechanization of the back stop.
TECHNICAL CHARACTERISTICS OF THE NK3418 GUILLOTINE:
| The largest dimensions of the metal being cut with a tensile strength of 500 MPa: thickness, mm width, mm |
6,3 2000 |
| Knife stroke frequency, min-1: single, when cutting the largest dimensions of the metal being cut |
60 25 |
| Moving knife angle | 1 about 30" |
| The greatest length of the cut strip when working with the back stop, mm | 700 |
| Overall dimensions of scissors in the plan, mm: left-right, front-to-back (without side stop), scissors height |
2780x1600x1620 |
| Height above floor level from the upper edge of the fixed knife, mm | 800 |
| Weight of scissors, kg | 4250 |
| Compressed air consumption for one inclusion, l | 0,25 |
| Type of supply current | Variable three-phase |
| Voltage, V (50 Hz) | 380 |
| Number of electric motors | 2 |
| Power circuit voltage, V | 24 |
| Control circuit voltage, V | 24 |
| Cut line lighting circuit voltage, V | 24 |
| Number of lighting points | 3 |
| Operating mode of the scissors electric drive | Single and continuous moves, jog, manual crank |
| Main drive motor: | 4AMC132SU3 |
| Electric motor power, kW | 8,5 |
| Motor speed, min-1 | 1500 |
TECHNICAL CHARACTERISTICS OF THE NK-3421H GUILLOTINE:
|
Material to be cut |
1 to 12 |
|
The greatest length of the cut strip when working with the back stop, mm |
|
|
Mains voltage, V |
|
|
Power of the electric motor of the main drive, kW |
|
|
Rotation frequency, rpm |
|
|
Plan dimensions, mm |
3 040 |
|
Height above floor level, mm |
|
|
Weight of scissors, kg |
 |
Shears guillotine electromechanical H3121.Crank shears with inclined blade H 3121 with an electromechanical drive are designed for cutting sheet material.
|
TECHNICAL CHARACTERISTICS OF THE H-3121 GUILLOTINE:
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
|
|
Width (maximum) of cut sheets, mm |
|
|
Frequency of knife strokes, idle, min.-1 |
|
|
The angle of inclination of the movable knife, hail. |
|
|
Clamping force, kN |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Clear distance between posts, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
3150 |
|
Weight, kg |
|
Guillotine shears HA 3121.Guillotine shears HA3121 with pneumatic drive designed for longitudinal and transverse cutting of sheet material. Are applied in procurement shops of the machine-building enterprises.
|
TECHNICAL CHARACTERISTICS OF THE GUILLOTINE ON-3121:
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
|
|
Width (maximum) of cut sheets, mm |
|
|
Frequency of knife strokes, idle, min.-1 |
|
|
The angle of inclination of the movable knife, hail. |
|
|
Clamping force, kN |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Clear distance between posts, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
3400 |
|
Weight, kg |
 |
Shears guillotine MNG 13.Mechanical guillotine shears MNG13 designed for cutting sheet steel and rolled products with the largest cross-sectional dimension of 136x2000mm, with a tensile strength of 500 MPa.
|
TECHNICAL CHARACTERISTICS OF THE MNG-13 GUILLOTINE:
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
13, no more |
|
Width (maximum) of cut sheets, mm |
2000, no more |
|
The size of the cut corner, mm |
|
|
Diameter of the cut bar, mm |
305, no more |
|
Frequency of knife strokes, idle, min.-1 |
|
|
The angle of inclination of the movable knife, hail. |
|
|
Clamping force, kN |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Clear distance between posts, mm |
|
|
Electric motor power, kW |
|
|
Coupling type |
with pivot key |
|
Brake type |
Tape |
|
Control |
push-button, pedal |
|
Working mode |
|
|
Overall dimensions, mm |
3100 |
|
Weight, kg |
 |
Guillotine shears NG-13, NG-13-01.Installation for cutting sheet and profile material NG13 and NG 13-01 designed for cutting sheet and profile steel of ordinary quality and high-quality carbon structural steel with tensile strength σv ≤ 500 MPa. Cutting is carried out both according to the markup and with the help of the back stop. Guillotine shears NG13 and NG13 01 Installation NG13-01 The unit has a climatic version UHL4 according to GOST 15150-69 and is designed for operation in rooms with an air temperature of +5° to +35° C, rel. humidity not more than 80% at a temperature of +25°C. |
TECHNICAL CHARACTERISTICS OF THE GUILLOTINE NG13, NG13-01:
|
|
|
|
Clamping force, kN, not less than |
|
|
Electric motor power, kW |
|
|
Working mode |
single cycles |
|
Cutting angle on the side stop |
|
|
Control |
Manual, pedal |
|
Unit overall dimensions, mm |
3100 |
|
Weight, kg, no more |
 |
Shears guillotine MNG-16.Mechanical guillotine shears MNG16 designed for cutting sheet steel and rolled products with a temporary resistance of 500 MPa, the largest cross-sectional dimension is 16x2000 mm.
|
TECHNICAL CHARACTERISTICS OF THE MNG-16 GUILLOTINE:
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
16, no more |
|
Width (maximum) of cut sheets, mm |
2000, no more |
|
The size of the cut corner, mm |
|
|
Diameter of the cut bar, mm |
30, no more |
|
Frequency of knife strokes, idle, min.-1 |
|
|
The angle of inclination of the movable knife, hail. |
|
|
Clamping force, kN |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Clear distance between posts, mm |
|
|
Electric motor power, kW |
|
|
Coupling type |
with pivot key |
|
Brake type |
Tape |
|
Lubrication system |
Grease nipples, manual |
|
Operating modes |
Single and automatic running |
|
Control |
push-button, pedal |
|
Overall dimensions, mm |
3100 |
|
Weight, kg |
 |
Guillotine shears NG-16, NG-16-01.Installation for cutting sheet and profile material NG16 designed for cutting sheet and profile steel of ordinary quality and high-quality carbon structural steel with tensile strength σv ≤ 500 MPa. Guillotine shears NG16, NG16-01 can be used in procurement and repair shops of enterprises of various industries. Installation NG16-01 It has centralized system greasing, the laser indicator of the line of a cut, the integrated control panel. The guillotines have climatic design UHL4 in accordance with GOST 15150-69 and are designed for operation in rooms with air temperature from +5° to +35°С, relative humidity not more than 80% at a temperature of + 25°С. |
TECHNICAL CHARACTERISTICS OF THE GUILLOTINE NG16, NG16-01:
|
The largest dimensions of the metal being cut with time. resistance σv ≤ 500 MPa, |
||
|
The largest dimensions of the cut corner, mm |
||
|
The largest diameter of the cut bar, mm, no more |
||
|
Knife stroke frequency, idle, minˉ¹, not less than |
||
|
The angle of inclination of the movable knife, α, no more |
||
|
Clamping force, kN, not less than |
||
|
Length of the sheet cut off with an emphasis, mm, no more |
||
|
Distance from the upper edge of the lower knife to the floor level, mm, no more |
||
|
Electric motor power, kW |
||
|
Working mode |
single cycles |
|
|
Cutting angle on the side stop |
||
|
Control |
Manual, pedal |
|
|
Unit overall dimensions, mm |
3145 |
|
|
Weight, kg, no more |
||
DELIVERY SET NG-16.
|
Complete unit |
1 PC. 1 PC. |
 |
Guillotine shears H3122.H guillotine scissors, crank H-3122 designed for cutting sheet material with a tensile strength of 500 MPa (50 kgf / mm 2). Scissors are manufactured according to TU 3828-001-81244053-2010 and meet the requirements normative documents GOST 12.2118-2006, GOST 12.2.017-93. |
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
16, no more |
|
Width (maximum) of cut sheets, mm |
2000, no more |
|
Frequency of knife strokes, idle, min.-1 |
|
|
The angle of inclination of the movable knife, hail. |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Clear distance between posts, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
3150 |
|
Weight, kg |
 |
Pneumatic guillotine shears HA3122. Guillotine shears HA-3122 with pneumatic drive are designed for cutting sheet material with a tensile strength of 500 MPa (50 kgf/mm 2). The largest section of the cut material is 16x2000 mm. Guillotine shears HA3122 used in machine-building, shipbuilding and procurement industries. Guillotines HA3122 proved to be reliable and easy to use equipment. Guillotine HA3122 equipped with a pneumatic clutch. Management: pedal and from the panel. |
TECHNICAL CHARACTERISTICS OF THE H3122 GUILLOTINE:
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
16, no more |
|
Width of cut sheets, mm |
2000, no more |
|
Frequency of knife strokes, idle, min.-1 |
|
|
Number of cutting edges of the knife |
|
|
The angle of inclination of the movable knife, hail. |
|
|
Clamping force, kN |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Clear distance between posts, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
3400 |
|
Weight, kg |
Mechanical guillotine shears H478, H478-01.
DESIGN FEATURES:
- The drive is electromechanical, which eliminates the use of compressed air.
- Cutting is carried out along the stop and marking.
- It is possible to install special knives for cutting round, square and corner rolled metal.
TECHNICAL CHARACTERISTICS OF GUILLOTINE H478, H478.01:
|
H478.01 |
||
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
||
|
Width (maximum) of cut sheets, mm |
||
|
Frequency of knife strokes, idle, min.-1 |
||
|
Knife stroke, mm |
||
|
Length of the sheet, cut off with an emphasis, mm |
||
|
Distance from the floor level to the upper edge of the lower knife, mm |
||
|
Clear distance between posts, mm |
||
|
Electric motor power, kW |
||
|
Overall dimensions, mm |
3300 |
3300 |
|
Weight, kg |
PNEUMATIC GUILLOTINE SHEARS WITH HYDRAULIC SHEETS Clamp.
 |
Guillotine shears HA3218 with hydraulic sheet clamp.Guillotine shears HA 3218
|
TECHNICAL CHARACTERISTICS OF THE GUILLOTINE FOR 3218:
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
|
|
Width of cut sheets, mm |
|
|
Frequency of knife strokes, idle, min.-1 |
|
|
The angle of inclination of the movable knife, hail. |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
4220 |
|
Weight, kg |
The complex includes:
- Feeder model UP11,
- Trolley recoil model T6.
Guillotine shears HA3221 with hydraulic sheet clamp.Guillotine shears HA 3221 designed for straight cutting of sheet and strip materials. |
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
|
|
Width of cut sheets, mm |
|
|
Frequency of knife strokes, idle, min.-1 |
|
|
Knife stroke frequency, when cutting the largest dimensions of the metal being cut, min.-1 |
|
|
The angle of inclination of the movable knife, hail. |
|
|
Maximum cutting force, kN |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
4700 |
|
Weight, kg |
|
|
Air pressure in the network, MPa |
Guillotine shears HA3222 with hydraulic sheet clamp.Guillotine shears HA 3222 designed for straight cutting of sheet and strip materials. |
TECHNICAL CHARACTERISTICS OF THE GUILLOTINE FOR 3221:
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
||
|
Width of cut sheets, mm |
||
|
Frequency of knife strokes, idle, min.-1 |
||
|
Knife stroke frequency, when cutting the largest dimensions of the metal being cut, min.-1 |
Guillotine shears HA3223 with hydraulic sheet clamp.Guillotine shears HA 3223 designed for straight cutting of sheet and strip materials. |
TECHNICAL CHARACTERISTICS OF THE GUILLOTINE FOR 3223:
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
|
|
Width of cut sheets, mm |
|
|
Frequency of knife strokes, idle, min.-1 |
|
|
Knife stroke frequency, when cutting the largest dimensions of the metal being cut, min.-1 |
|
|
The angle of inclination of the movable knife, hail. |
|
|
Clamping force, kN |
|
|
Maximum cutting force, kN |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm Guillotine shears HA 3225 designed for straight cutting of sheet and strip materials. |
TECHNICAL CHARACTERISTICS OF THE GUILLOTINE FOR 3225:
|
Thickness of cut material with tensile strength ≤ 500 MPa, mm |
|
|
Width of cut sheets, mm |
|
|
Stroke of hydraulic clamps, mm |
|
|
Frequency of knife strokes, idle, min.-1 |
|
|
Knife stroke frequency, when cutting the largest dimensions of the metal being cut, min.-1 |
|
|
The angle of inclination of the movable knife, hail. |
|
|
Clamping force, kN |
|
|
Maximum cutting force, kN |
|
|
Length of the sheet, cut off with an emphasis, mm |
|
|
Distance from the floor level to the upper edge of the lower knife, mm |
|
|
Clear distance between posts, mm |
|
|
Electric motor power, kW |
|
|
Overall dimensions, mm |
5220 |
|
Weight, kg |
|
|
Air pressure in the network, MPa |
Solid processing building materials often requires the use of a special tool. The operation is one of the most common. Quite diverse and equipment that allows you to perform it qualitatively. Today, such tasks are solved by thermal devices, laser systems, as well as sandblasting hydroabrasive machines. At the same time, traditional mechanical tools remain relevant, which also give a good result. Such devices include guillotine shears, presented on the market in a wide range.
Varieties of guillotines for cutting metal
Conventionally, the group of guillotine cutters can be divided into three segments. The first will include the most powerful electrical machines that operate on a drive mechanism and include a full-fledged engine in the device. These are the most powerful guillotine shears, with which you can cut metal sheets in the mode production flow. This is followed by an intermediate category of carvers, whose representatives are devoid of an electric drive, but also have a massive active element in the form of a cutter and a bed, the presence of which combines such models with the first class of planers.
If we are not talking about complex operations that are planned to be performed in large volumes, then it makes sense to use compact and low-maintenance cutters. manual, the device of which is maximally optimized for fast work with small workpieces. With this tool, you can cut a small metal sheet to the desired size, expend a little effort on it.
Technical arrangement of equipment
Again, the design and its characteristics are determined by the type of particular model. If we talk about machines, then their device is represented by a carrier platform, a work table, an electric motor, a clamping mechanism, as well as cutting knives that are set in motion after the activation of the power plant. Guillotine types differ significantly. They also have two knives, one of which remains motionless even during operation, but the very principle of operation is based on muscular effort. The latest models also provide auxiliary mechanisms for sheet feeding and positioning. With the help of such devices, the operator can more accurately organize in-line processing of metal with different parameters.
Main characteristics of guillotine shears
Performance is the main selection criterion for guillotine shears. One of the main parameters is the force with which the equipment and, in particular, the knife acts on the workpiece. So, the average value of the power load for machine models is about 5-7 kg / mm 2. Further, the width and thickness with which the guillotine shears work are taken into account. The characteristics of the machine equipment allow cutting sheets with a thickness of 0.5 to 3 mm. At the hand tool this indicator rarely exceeds 2 mm. It matters in the workflow and the width of the cut. Depending on the model, this value can vary on average from 1000 to 1500 mm. The frequency of operations affects the overall performance of the guillotine and is usually around 60 cuts per minute.
Engine Specifications
The operational capabilities of the guillotine machine are directly determined by the potential of the power plant, which provides the function of the knives. To begin with, the machines should be divided into models that operate on a 220 and 380 V mains. Power is the main indicator of the performance of the unit and is usually 3-4 kW. This potential makes it possible to confidently cope with thick sheets at high frequencies. By the way, the torque at which hydraulic guillotine shears operate can be 1200-1500 rpm. Here it is important to note the dependence of the electric motor on the design. So, the wider the cutting possibilities, the higher the power potential of the drive should be.
Technical characteristics of a manual guillotine for metal
The segment of manual guillotines for working with metal is mainly represented by saber-type units. Their design is based on a small panel or platform that holds the base, and a movable knife directly performs the cutting. As already noted, manual guillotine shears can serve sheets up to 2 mm thick. As a rule, in the case of stainless steel, this figure is 1.5-1.7 mm. However, they can be cut with such a tool even with a thickness exceeding 2 mm. True, the cutting length is still noticeably inferior to full-fledged machines - in standard families, the maximum reaches 1300 mm. On the other hand, such models benefit from their compact size and low weight, which rarely exceeds 100 kg. Accordingly, the manual guillotine can be carried around the work site to different points of assembly operations, which simplifies the production and construction process.
Consumables and accessories
In addition to guillotine equipment, manufacturers offer sets of processing tools, tools personal protection and control equipment. From the point of view of performing the main cutting operation, it is important to have high-quality ones on hand that are most often used for locksmith operations with metal, as well as tiled products and glass. These devices will help if the main work is performed by mechanical guillotine shears, which do not allow you to get a neat cut. In other words, needle files will allow you to make the edge better and smoother. Also, to adjust the guillotine machines, sets of appropriate keys should be provided. Usually, an all-metal bench square is used for this purpose. As for personal protective equipment, they must be in the equipment of the operator of the electrical machine. AT basic set includes: gloves, filtering half mask, goggles and earmuffs.
Maintenance
AT without fail maintenance personnel must check the reliability of fastening of the movable parts of the machine, the quality of fixing the frame, the correct location of the platform and the desktop. A properly installed and adjusted machine will ensure that you can cut with high precision and without deviations from the technical specifications. Special attention is paid to the electric motor that drives the guillotine shears and, in some models, is responsible for automatic feed sheets. The condition of the oil, cooling systems and carbon brushes, if any, should be checked. Masters pay attention to the beam mechanisms that are involved in the transfer of torque. Clutches and gears must be in optimal working condition, otherwise the cutter function simply will not work.
An example of the work of a manual reciprocating guillotine Metal Master MG
Overview of crank guillotine Metal Master ETG 1330
Metal Master MSJ manual guillotine review
An example of working on a manual lever guillotine Metal Master MTG 2012 in tandem
ONLINE broadcast from Metal Master demo hall
Guillotine for cutting metal
All guillotines are divided into several types, depending on the type of drive:
- manual
- electromechanical
- hydraulic
Depending on the control system:
- Manual
At the same time, the conditionally named manual guillotine can be both foot and manual. Usually a foot drive is installed with a small working length of the equipment - up to 130 cm. Manual reciprocating guillotines of the device are also used, which are easy to operate, reliable and easy to set up.
Principle of operation
Regardless of the design and principle of operation, functionally any guillotine works the same way. The material to be processed is placed on the feed table between the cutting blades, after which the upper knife is lowered and cuts the material.
In this case, only the upper knife moves, and the lower part is rigidly fixed. The device may include additional elements, for example, a clamping device.
Hydraulic guillotine
If you need a hydraulic guillotine, you need to buy it after determining the tasks to be performed. In this case, the type and dimensions of the material and its thickness must be taken into account. The drive type is selected depending on the production volume.
The manual guillotine for metal has gained great popularity, which allows you to cut metal with minimal involvement of the operator. At the same time, the accuracy, speed and efficiency of work is either maintained or increased.
Stationary models have special devices and fixtures that monitor the accuracy of cutting and increase its efficiency. Such devices and fixtures include front-controlled stops that regulate cutting accuracy to microns, a crank mechanism instead of an eccentric to reinforce the knife beam, and a pneumatic tilting table for dropping the workpiece into the accumulator. With the help of a computer software the machine remembers the stages of work, including even the routes of parts from the cutting area. As a result, the machine can work autonomously without being constantly under the control of the operator.
Electromechanical guillotine
Electromechanical guillotine (guillotine shears) provides the best accuracy and high performance, and also allows you to work with a minimum involvement of the operator.
Where to buy reliable guillotines
Buy manual and automatic CNC guillotines for metal from the manufacturer at favorable prices in the online store Metalmaster. Our catalog contains big choice types of modern new models, all dimensions: dimensions (length, width, height), weight. Guillotine included with purchase detailed instructions for managing settings and operation, you can also study the technical characteristics on the site: description, photo, device, video, power, application, purpose.
Information about the manufacturer of guillotine shears H3121
Manufacturers of H3121 scissors are Shimanovsky plant of forging and pressing equipment and Lviv factory of diamond tools.
H3121 Guillotine shears for sheet metal processing. Purpose and scope
Crank guillotine shears H3121 were produced in accordance with GOST 6282-64 from 1968 to 1983 and were replaced by more perfect model HA3121 .
Mechanical guillotine shears H3121 with an inclined blade are designed for cutting sheet metal with ultimate strength (tensile strength) σ BP = 500 MPa (50 kg/mm2). Cross cutting of a sheet with a thickness of up to 12.5 mm and a width of up to 2000 mm is carried out in one stroke of the knife. Longitudinal cutting - with a sheet length of more than 2000 mm - is performed by a series of repeated cuts when the sheet is advanced along the cut line.
The main parameters of the machine n3121:
- The largest dimensions of the metal being cut - 12.5 x 2000 mm
- Ultimate strength (tensile strength) of metal σ BP, not more than - 500 MPa (50 kg / mm 2)
- Maximum cutting force - 500 kN (50 tf)
- Maximum clamping force - 29 kN (2.9 tf)
- Knife stroke frequency, not less than - 40 min -1
- Knife stroke - mm
- Angle of inclination of the movable knife - 2°10"
- Drive power - 18.5 kW
- Machine weight full - 7 t
Design features of guillotine shears H 3121
The bed of a guillotine is welded, from sheet steel. Two side racks are connected by a table and three ties. The table to which the lower knife is attached has an adjustment to set the required clearance.
Shear drive H3121 is carried out from an electric motor through a V-belt transmission and a two-stage spur gearbox, the design of a closed spur gearbox provides a significant reduction in the noise characteristics of the scissors. The knife beam of the guillotine receives reciprocating motion from the crankshaft through the connecting rods. The knife beam is balanced by a spring equalizer.
The force on the knife beam from the crankshaft is transmitted by two connecting rods. Clutch for switching on scissors with two rotary keys, band brake, intermittent action. The frequency of braking is achieved due to the eccentric location of the pulley in relation to the axis of the crankshaft. This deceleration occurs when the knife beam is in the upper position, which eliminates its overrun under the action of inertia forces.
Clutch rigid with two rotary keys and an electromagnet. The design of the main drive engagement clutch ensures reliable operation of the shear without air, which greatly reduces operating costs.
The material to be cut is pressed against the shear table by a pressure beam, the movement of which is coordinated with the movement of the knife beam.
Mechanical shears H3121 are equipped with back stop. For safe work The scissors are equipped with a protective grille.
H3121 guillotine shears can work on single and automatic moves. Push-button control from the control panel and from the foot pedal.
The design of the connection of the knife beam with the connecting rods provides for the possibility of increasing the open height of the knives by 20 mm, which is necessary for longitudinal cutting of the sheet.
clamp of the cut sheet to the table is carried out by individual spring-loaded rods.
Cutting can be done both by marking and with the help of the back stop.
Scissors can be used in warehouses and workshops of various enterprises where cutting of sheet steel is required.
When cutting steel with a tensile strength greater than or less than 50 kg/mm2, the formula given in the "Shear Adjustment" section must be used to calculate the maximum cutting thickness. In this case, the hardness of the sheet being cut should not exceed 35 Rockwell units on the “C” scale.
Scissors are manufactured with the main parameters in accordance with GOST 6282-64
General form guillotine shears H3121
General view of guillotine shears H3121. Side view
Landing and connecting bases of scissors H3121
Landing and connecting bases of scissors n3121
Photo of guillotine shears with an inclined knife H3121
Photo of scissors n3121
Location of the H3121 Guillotine Shear Controls
H3121 scissors control panel
List of controls on the H3121 scissors control panel
- Mode switch (P) "Single stroke" - "Automatic stroke"
- Mode switch (PU) "Pedal control" - "Button control"
- General stop button
- Control circuit breaker
- Engine start
- Single move button
- signal armature
Kinematic diagram of scissors H3121
Kinematic scheme scissors h3121
Construction of guillotine shears H3121
Shears consist of a frame, knife and pressure beams, a drive, drive shafts, a clutch, a rear stop, a balancer, brakes, a fence, an electrical equipment and lubrication system, and a protective grille.
Bed of guillotine shears Н3121
The bed is the base unit on which all other scissor units are attached. The bed is a welded structure consisting of two racks interconnected by channels.
A table rests on the racks, to which the lower knives are attached with screws.
To adjust the gap between the knives of the table and the knife beam, the table is moved by bolts screwed into the ends of the bed with the table fastening bolts relaxed. Setting the knife in height, when regrinding, is done by grinding the gaskets located under the knives.
The table has extensions with T-slots.
On the right edge of the table there is an extension fixed with pins, in the T-slot of which the cross cutting stop is attached. For longitudinal cutting, this stop is removed.
Drive shafts for guillotine shears H3121
The shears are driven by an electric motor through a V-belt transmission to the flywheel, through gears and a clutch to the crankshaft (see Fig. 3).
The electric motor is attached to the under-engine plate, pivotally mounted on the frame. The belt tension is adjusted using the eyebolt nuts.
Clutch for switching on guillotine shears n3121
At the left end of the crankshaft in the hub of the gear wheel, a keyed engagement clutch is installed.
Bushings 1, 2, 3 are fixedly seated in the gear wheel hub. The remaining parts are connected to the crankshaft. The rotary (working and locking) keys of the engagement clutch are switched on by springs 6 and, turning, are captured by the semicircular grooves of the sleeve 2.
Bushings 8 and 9, having semicircular grooves, complement the sockets for the round ends of the key. The right end of the working key is equipped with an easily detachable shank 4, which, when the scissors are operating, turns off the keys connected to each other by levers 5. When the keys are turned on, their rotation angle is limited by the groove of the drive bush 8.
Knife beam of guillotine shears H3121
The knife beam is a welded L-shaped structure reinforced with ribs. A back stop is attached to the knife beam.
The force from the crankshaft to the knife is transmitted by two connecting rods, in the upper position the beam is held by balance springs hinged to the beam, and during repair it is fixed in the upper position by two Ø25 pins inserted into the holes. knife bar guides.
Clamp and protective grid for guillotine shears H3121
During the operation of the scissors, the sheet being cut is pressed against the table by a clamping beam. When the knife beam moves down, the pressure beam lowers under the action of the springs and presses the sheet, and the sheet is first pressed, and then the cut begins. This is achieved by setting the beam to a height of 24 mm, and the blade - 26 mm from the table surface.
The lifting of the clamp is carried out by the stops of the knife beam, abutting against the clamp plates.
The clamping force is adjusted by nuts that compress the clamping beam spring.
A protective grille is attached to the guides of the clamping beam, which protects the worker's hands from falling under the clamp. When the scissors are working, the grill is lowered: the M8X40 screw on the left presses the microswitch rod, and the screw on the right limits the rotation of the grill to the clamp.
If necessary, the grille can be lifted up, while switching on the scissors is not possible - the switching contacts are open. In the lowered and raised positions, the grille is held by a 2X16 spring.
Emphasis rear scissors H3121
The rear stop is mounted on the rear side of the cutter bar and serves as a stop for the sheet during cross cutting. The back stop consists of two cylindrical cutters, manually moved by handwheels sitting on gear shafts engaged with racks. By moving the rails, the stop line is set at the required distance from the edge of the knife, which achieves measured cutting of the sheet using the back stop.
H3121 shear balancer
The balancer serves to hold the knife beam in the upper position after each single stroke - when repairing shears or changing knives. It consists of two sets of springs installed in cups welded to the top channel of the frame. The rods are pivotally connected by axes to the knife beam. When lowering the beam, during the cut, the rods compress the springs. During the reverse stroke, the springs, unclenching, contribute to raising the knife beam. Both sets of springs are designed for a force of 1.0 tons at the top position of the beam.
Shear brake H3121
At the right end of the crankshaft, an intermittent brake is mounted. The frequency of braking is achieved due to the eccentric location of the pulley in relation to the axis of the crankshaft.
Braking occurs when the knife beam is in the upper position, which eliminates its running under the action of inertia forces.
Solenoid control of scissors H3121
When a button or pedal is pressed, an electromagnet is turned on, the anchor of which turns the fork with a finger, releasing the shank that engages with it and is connected to the working key. After that, under the action of the key springs, the crankshaft turns and turns on. There is a cut. If the operator does not release the button or pedal in the "Single stroke" mode, an electrical interlock is activated (see section electrical equipment).
To repeat the working stroke, the button or pedal must be released, then pressed again. During automatic operation, the armature of the electromagnet is set to a stroke of 40 mm, and when working on single strokes, to 20 mm.
Shear guard H3121
The scissor guard is made of 1.6 mm thick sheet steel and serves to guard the rotating parts of the scissors. The guard consists of four casings that cover the motor pulley and V-belt drive flywheel, six drive shafts and a shear brake.
With M10 bolts, all casings are attached to the frame.
Shear lubrication diagram H3121
Shear lubrication scheme n3121
- 1-2 Crankshaft bearings
- 3-4 Crankpins- Centralized lubrication from the pump
- 5-6 Connecting rod pins- Centralized lubrication from the pump
- 7-8 Knife bar guides- Centralized lubrication from the pump
- 9-10 Clamp guides- Manual lubrication with a syringe
- 11 Clutch- Manual lubrication with a syringe
- 12 Axis of the switching mechanism- Manual lubrication with a syringe
- 13-14 Drive and intermediate shafts- Centralized lubrication from the pump
The main rubbing surfaces are lubricated by hand pumping station through feeders. Lubrication is carried out through all individual lubricators installed on the scissors using a manual syringe. Drive gears are lubricated by applying grease to the gear teeth respectively.
During operation, the scissors must be lubricated so that the lubricant comes from the side bearing locations. Grease protruding from the gaps must be wiped off. It is necessary to periodically check the condition of the lubricators and oil-conducting holes in the parts and be sure to clean them. At least once every three months, the lubrication holes should be flushed with clean kerosene.
Adjustment of guillotine shears H3121
During the operation of the scissors, the brake, the clutch, the knife beam, the clamp and the gap between the knives can be adjusted and adjusted. The operation of the brake must be periodically monitored by adjusting the tension of the springs and preventing contamination of the brake pulley.
The gaps of the cutterbar guides and the clamp must be checked regularly in accordance with feed accuracy.
Adjustment of the pressure is reduced to ensure that by preloading the spring, the sheet being cut is securely pressed against the table during the cut.
Setting and operating modes of scissors H3121
Adjustment of scissors for cutting strips of a given length is made by moving the rear stop. The distance of the back stop from the cutting edge of the lower knife is determined by the scale of the rulers mounted on the rails of the back stop.
The wiring diagram provides for the possibility of operating the machine in the "Single stroke", "Automatic stroke" modes. Cutting sheets of maximum thickness and width specified in the technical specifications of the scissors is not allowed on automatic moves, since the power of the installed electric motor is designed to use 30% of the number of cutter beam moves.
Adjusting the gap between the knives of the scissors H3121
When cutting sheets, the gaps between the knives should be set within 1/20 - 1/30 of the thickness of the sheet being cut.
The straightness of the cutting line depends on the correct adjustment of the gap.
The gap between the knives is adjusted by moving the table. It is not allowed to cut sheets of maximum thickness and width from a material with a tensile strength of more than 50 kg / mm 2.
In the case of cutting a sheet, the tensile strength (tensile strength) σ of which is over 50 kg / mm 2, its maximum allowable thickness is determined by the formula:
δ X = δ√ 50/σ BP mm
where δ X - the maximum allowable thickness of a sheet of material, the tensile strength of which is more than 50 kg / mm 2.
δ - the maximum allowable sheet thickness for cutting, indicated in the characteristics of the scissors
σ BP - ultimate strength of the sheet material to be cut
It must be remembered that the accurate and reliable operation of scissors depends on the quality of sharpening knives. Do not cut with blunt knives.
When adjusting, it is necessary to maintain the following gaps: Thickness of the cut sheet, mm - 1; 5÷3; 3÷6.3: 6.3÷12.5. Gap between knives, mm - 0.15; 0.35; 0.5.
After setting the gap between the knives, tighten the bolts that secure the table to the frame.
Knives are made with four cutting edges; when one edge becomes dull, the knives must be periodically turned over.
Features of disassembly and assembly of H3121 scissors
When removing the pressure beam, you must first release the rods from the action of the pressure springs, and then unscrew the guide bars of the pressure beam, supporting the beam with a crane.
Before removing the cutter bar and connecting rods, fix the bar in the upper position by inserting the fixing pins into the hole in the upper part of the guide bars.
Wiring diagram of guillotine shears n3121
The circuit is designed to control a machine with a rigid clutch for a clear engagement and disengagement of the moving slider with the tool. The clutch is switched on by an electromagnet, which is switched on by an intermediate relay.
Complete shutdown of the circuit is carried out by an introductory circuit breaker.
Electric equipment of scissors H3121
The machine is controlled from the control panel. on which the control buttons and mode switches are located
The signaling is adopted by electric light, the designation of modes and controls is symbolic.
Allowed operating mode:
- automatic (continuous running);
- single move.
The machine can be driven:
- buttons;
- pedal only on single strokes.
The wiring diagram includes the following circuits:
- a. AC power circuit, voltage 380 V.
- b. AC control circuit, 36 V.
- in. AC lighting circuit, 5.5 V.
From the power circuit receive power:
- a. Main drive motor.
- b. Pulling electromagnet.
- in. The control, lighting and signaling circuits are powered by the secondary windings of the 2T transformer.
Control and protection equipment (transformer, magnetic starters, circuit breaker) are located in the electrical cabinet.
The work of scissors is controlled from the control panel.
Description of the operation of the electrical circuit
The wiring diagram provides for the possibility of operating the scissors in the following modes: "Single stroke"; "Auto Moves".
The choice of the operating mode is carried out by readjusting the scissors (adjusting the traction of the electromagnet) and setting the switches for the operating modes of the PR and PU to the desired position, located in the control panel that can be locked with a lock. When reinstalling the switches PR and PU, the electric motor must be turned off with the 2KU button.
Single stroke mode
In this mode, the operation of the button and the pedal is possible. The PR switch is placed in the "Single move" position. Electromagnet thrust is mechanically regulated.
a) Button Control
The PU switch is set to the “Button” position. When you press the button "Start drive" (2KU) along the circuit 1-9-7-15-19-23-3-2, the magnetic starter 1K is turned on, which turns on the electric motor of the main drive (1D).
Through the normally closed contacts of the 4KU button and the 2K magnetic starter, the 1RP relay receives power through the 19-17-115-21-2 circuit, becomes self-powered and prepares the 2K magnetic starter for switching on, including an electromagnet. When the 4KU button is pressed, the 2K starter is turned on, and therefore the electromagnet E. The 2K starter, turning on, breaks the circuit 21-115 with its normally closed contact,
1 PR turns off and turns off with its n. about. contact circuit 25-31. This turns off the electromagnet E., i.e., electrical blocking from doubling the moves.
b) Pedal control
The PU mode switch is set to the “Pedal control” position. When you press the button "Start drive" (2KU) turns on the electric motor of the main drive 1D.
When you press the pedal, the magnetic starter 2K and the electromagnet E are turned on.
The electric blocking against double strokes is carried out in the same way as with button control.
Automatic travel mode
Mechanically adjustable solenoid thrust for automatic strokes. The PR operating mode switch is set to the “Automatic moves” position, and the PU switch to the “Buttons” position.
When you press 4KU, the 2K magnetic starter works and turns off the electromagnet. Starter 2K with its n. about. contacts 25-105 becomes self-powered, automatic moves occur until the 3KU button is pressed.
Blocking and signaling
Blocking, which ensures complete removal of voltage from all equipment when opening the electrical cabinet door, is achieved by turning off the 1A circuit breaker.
Blocking, which ensures switching off the control circuit, is achieved by the 1VK limit switch located in the electrical cabinet, which turns off the control circuit when the door is opened.
Blocking, which excludes the possibility of receiving moves when the protective grille is raised, is carried out by the 2VK tip.
Blocking, which excludes the inclusion of the clutch when working on "Single and automatic moves" without turning on the main drive, is achieved by contact 1K (circuit 15-19).
The wiring diagram provides for signaling the presence of voltage in the control circuit. When voltage is applied, a white 1LS lamp lights up on the control panel.
When the main drive motor is turned on, the 2 LS green lamp lights up on the control panel (engine is on).
Protection
Protection of electrical equipment of scissors from short circuit currents is carried out by an automatic switch 1A and fuses 2P, 3P, 4P.
Thermal protection of the main drive motor is carried out by a thermal relay RT built into 1K magnetic starters.
Zero protection of the electrical circuit is provided by magnetic starters 1K, 2K.
Safety
The electrical equipment of the scissors must be reliably grounded - in accordance with the current "Electrical Installation Rules" by connecting the frame of the scissors and the electrical cabinet to the workshop grounded circuit.
Before starting work, inspect the scissors, check the grounding.
In order to improve safety service personnel the wiring diagram provides for locking:
- electrical cabinet doors;
- control panel doors.
During long breaks in work on the scissors or after the end of the shift, the introductory automatic switch is turned off.
The first switching on of the circuit breaker should be carried out for a short time, followed by inspection and verification of the correctness of the indication of light signals.
The control panel has a red mushroom-shaped button "Common Stop" (1KU) to completely disable the circuit.
Installation of switches PU and PR is carried out by the adjuster.
Access to the electrical cabinet is allowed only to electrical personnel assigned to this machine.
Drawing of a knife of guillotine shears Н3121-11-402
Knife for guillotine shears 25 x 60 x 625
- Knives must be made of steel grades 5XV2S, 6XV2S and 6XC according to GOST 5950-73
- Blade hardness - HRC 54 ... 58
- Surface flatness tolerance B - no more than 0.1 mm over a length of 100 mm
- Dimensional tolerance s a B of a set of knives - according to h11
- Permissible difference in the size of the knives of the set at the junction is not more than 0.03 mm
- H14; h14; ±IT14/2
- The knife should be marked with the following: trademark manufacturer, designation of the knife, quality control stamp, cipher (number) of the kit (for compound knives).
- Rest technical requirements for a set of knives H3121-11-402 in accordance with GOST 25306-82 Flat knives for sheet shears. Basic and connecting dimensions. Technical requirements
H3121 Crank sheet guillotine shears with an inclined knife. Video.
Specifications of H3121 guillotine shear
| Parameter name | H3121 | HA3121 |
|---|---|---|
| Basic parameters of scissors | ||
| Accuracy class | 2 | 2 |
| The greatest thickness of the cut sheet at σ BP , no more than - 500 MPa (50 kg / mm 2), mm | 12,5 | 12,0 |
| The greatest length of the cut sheets in mm, mm | 2000 | 2000 |
| The number of strokes of the knife per minute, not less than | 40 | 46 |
| Angle of inclination of the movable knife in degrees | 2°10" | 2°10" |
| Width of the sheet to be cut on the back stop, mm | 500 | 1000 |
| Number of cutting edges of the knife | 4 | 4 |
| Clear distance between posts, mm | 2285 | 2235 |
| Maximum cutting force, kN (kgf) | 500 (5000) | 500 (5000) |
| Belts type-"B" GOST 1284-67, length, mm | 3550 | |
| Bearings GOST-633-59, designation | 7616 | |
| Clamping force, kN (t) | 29 (2,9) | 29 (2,9) |
| Operating modes | 2 | 2 |
| Brake type | tape | tape |
| Coupling type | with pivot key | with pivot key |
| electrical equipment | ||
| Electric motor, kW (rpm) | 18,5 () | 17 () |
| Dimensions and weight of scissors | ||
| Shears dimension (length x width x height), mm | 1950 x 38075 x 2875 | 1950 x 3360 x 2135 |
| Weight of scissors, kg | 7000 | 7000 |