The function and adjustment method of the blade gap of the shearing machine
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The function and adjustment method of the blade gap of the shearing machine

Views: 62     Author: Site Editor     Publish Time: 2022-07-01      Origin: Site Inquire

First let's understand the blade gap of the shearing machine.


The so-called knife edge gap is the distance between the cutting points of the upper knife and the lower knife of the shearing machine. (Figure 1)

Knife edge clearance


Influence on shearing steel plate: 

  • If the gap between the shearing edges of the shearing machine is too large, there will be obvious burrs in the shearing of the steel plate, and the edge of the sheared steel plate will collapse seriously. The phenomenon of steel plate bending and curling occurs.

  • If the gap is too small, the cutting edge will crack when shearing the steel plate, and the shearing steel plate will also crack, which will affect the secondary use of the product. The gap between the blades of the upper and lower shears should be adjusted in time, according to the thickness of the steel plate, to avoid the above phenomenon.


Therefore, it needs to be adjusted for different boards. The adjustment method is as follows:

1. Adjustment of the gap between the cutting edges of the CNC shearing machine

The CNC shearing machine refers to the shearing machine equipment that is controlled by the CNC operating system to control the material stop, shearing angle, shearing edge clearance and shearing stroke. The equipment automatically calculates the shearing angle, shearing edge clearance and shearing stroke according to the input parameters of sheet thickness, starts the numerical control system, the shearing angle and shearing edge gap will be automatically executed in place, and then fine-tuned according to the shearing quality of the workpiece.

2. Adjustment of the gap between the cutting edges of the ordinary shearing machine

The gap adjustment of the cutting edge of the ordinary shearing machine must be manually adjusted by the operator according to the thickness of the workpiece sheet and the actual shear quality. When adjusting, first loosen the locking bolt, turn the handle to the specified scale, and then lock the bolt. Cut and fine-tune according to the above steps according to the cutting quality of the workpiece. Production is ready.

Gap comparison table





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