CNC Metal Plate Shear 30mm Guillotine type

As we know, to cut metal sheet , we shall set proper up / down blades gap. Because the proper shear blades gap will affect on cutting force and plate cutting edge. While For low elongation metal plate, we shall use smaller gap.
CNC Metal Plate Shear machineBlade 

GAP = K * t (plate thickness)

• Mild steel (Q235, Q345): K = 0.1
• Stainless steel (201, 304, 316):  K = 0.06~0.08
• AL, copper : K = 0.6
• Weldox (700, 900, 960): K = 0.12~0.16
• Hardox (400 ): K = 0.16~0.18

NOTE:  

1. Normally after first cutting, we shall check cutting edge performance. sometime we may need to increase or decrease to improve edge performance.
2. If for Harder plate material, we shall use high chrome and harder shear blades, like Cr12MoV, H13;
3. And For harder material cutting, we shall use higher capacity shearing machine. The cutting force can be 2 times of mild steel for SS plate, Or even more for other harder plate. We shall keep blades edge sharp during cutting.
4. We can directly adjust blades gap on CNC controller. while for manual metal plate shear, we can adjust blades gap by adjust handle manually.

• Only Hydraulic guillotine type metal plate shearing machine’s cutting angle is adjustable. but For swing beam shear, top beam shearing angle is fixed.
• Because hydraulic guillotine shear’s cylinders are connected in series. It means big cylinder down chamber is connected with small cylinder’s top chamber by hydraulic pipe or hose.  Increase or decrease oil volume can adjust small cylinder’s relative position of small cylinder. so that we can adjust shearing angle.
• On control panel, turn the key switch to angle, push increase or decrease button to adjust shearing angle.
• If for thin plate, smaller shearing angle can reduce edge twist. But For bigger thickness plate, bigger shearing angle can reduce cutting force.

• For Hydraulic guillotine shear, top/down blades has 4 cutting edge as normal. But for swing beam type shear, top blades have 2 cutting edges and bottom blades have 4 edges usually. we can directly take off blades and change cutting edge. Before use the machine, we shall make sure that the blades are fixed and gap even. otherwise, we may damage the blades.
• When all blades edge is not sharp. We shall take off the blades complete (top / down). Make sure that put all same set blades over surface grinder to sharp them. we must make sure same set blades thickness is equal.
• As we know, Shearing machine’s top blades are fixed by bolts only. bottom blades are fixed over square block. We must calibrate shearing gap before working. while method is different for different model machine. so please consult our engineer for detail.