Safety Preparations

Before starting any work, completely shut off the machine's power supply and lock the control system to prevent accidental startup. This eliminates the risk of unexpected movement during trimming.

Next, clean the area around the blade: remove any residual metal scraps or oil on the blade surface and surrounding components. Debris can interfere with trimming accuracy and cause scratches on the blade.

Tool Selection

Use dedicated blade grinding equipment or fine-grit grinding tools designed for metal blades. Avoid using rough tools that may leave uneven surfaces on the blade.

These specialized tools help maintain the blade's original edge angle, which is critical for effective shearing.

Trimming Process

Begin by carefully removing the blade. Loosen the fasteners that secure the blade to the machine, taking care to handle the blade gently to prevent bending or dropping.

Once removed, place the blade on a stable, flat workbench. During grinding, keep the tool at the blade's original angle—do not alter this angle, as it is calibrated for the machine's shearing needs.

Grind the blade's edge evenly, focusing on areas with dullness or minor nicks. Avoid over-grinding, as excessive removal of metal will reduce the blade's thickness and shorten its service life.

Inspection and Reinstallation

After grinding, inspect the blade thoroughly. Check if the edge is smooth and sharp, with no remaining burrs or uneven spots. If small defects persist, perform slight touch-up grinding until the edge meets the required standard.

Then, reinstall the blade back onto the machine: align it correctly with the machine's shearing mechanism, tighten the fasteners firmly to prevent loosening during operation, and ensure no gaps exist between the blade and its mounting position.

Test Run

First, run the machine without load to check if the blade moves smoothly without friction or abnormal noise.

Then, feed a small amount of suitable metal material for a test cut—observe if the cut is clean and even. If the cutting effect is unsatisfactory, recheck the blade's installation or edge condition and make necessary adjustments.