Crank shears are designed for cutting sheet material.
They are used in procurement and repair shops of machine-building enterprises. They can be used as part of automated complexes and automatic lines.
The electrical circuit ensures the operation of the shears in the adjustment modes and single strokes. The drive is carried out from an electric motor through a V-belt transmission to the flywheel. Rotation is transmitted to an eccentric shaft connected to the knife bolster by rods from the flywheel, through a pneumatic brake clutch and a pair of gears.
The shears control is push-button and by the pedal. Lubrication of the most loaded shears is carried out using a centralized grease lubrication system. The rest of the rubbing surfaces are lubricated with a syringe. A manual drive is installed on a crank shears backgauge. The position of the backgauge relative to the cutting line is indicated by a ruler or revolution counter. It is possible to manufacture crank shears equipped with a D-Range Optimizer (DRO) and a motorized backgauge.
The coordinates counting of the backgauge position is carried out according to the digital display device.
An angle bolster and other accessories are available on request.
TECHNICAL SPECIFICATIONS
| Parameters | Models | ||||
|---|---|---|---|---|---|
| NP3118 | NP3118А | NP3121 | NP3121А | NP3122С | |
| The largest dimensions of the cut sheet with a temporary resistance less than or equal to 500 MPa, mm - thickness - width |
6,3 2000 |
6,3 3150 |
12 2000 |
12 3150 |
16 3100 |
| Sheet clamp | springs | springs | hydraulic | hydraulic | hydraulic |
| Number of clamps | 8 | 12 | 15 | ||
| Knife stroke frequency, min, not less - idle - when cutting the largest dimensions of the cut sheet |
60 22 |
60 22 |
40 9 |
40 9 |
32 7 |
| The angle of inclination of the movable knife, deg. | 1°30′ | 1°30′ | 2°10′ | 2°10′ | 2°10′ |
| Power consumption by the control system, kW | 8,5 | 11,8 | 15 | 18,5 | 30 |
| The greatest length of the cut when working with a backgauge, mm | 630 | 630 | 630 | 1000 | 1000 |
| Compressed air working pressure, MPa | 0,5 | 0,5 | 0,5 | 0,5 | 0,5 |
| Hydraulic system working pressure, MPa | 8,0 | 8,0 | 11,0 | ||
| Operating mode | Manual turning, adjustment, single stroke, automatic operation |
||||
| Overall dimensions, mm – from left to right (with hydraulic station) – front to back |
2750 1710 |
3900 1770 |
3600 1875 |
4500 2400 |
4600 3400 |
| Height above floor level, mm | 2160 | 2160 | 2360 | 2400 | 3000 |
| Weight, kg | 4000 | 7100 | 7100 | 11350 | 23000 |