Mold grinding refers to the process of restoring the sharp cutting edge of a die through abrasion. As the cutting edge of the punch mold wears down to a certain extent, the once sharp edge becomes dull, leading to excessive burrs on the trimmed parts and a decrease in dimensional and positional accuracy.

Therefore, the molds must be ground to restore their sharp cutting edges. This reduces the burrs and dimensional and positional deviations, and improves the surface quality of the formed parts.

Regular honing of molds not only extends their lifespan but also enhances the longevity of the machinery, making it crucial to master the correct and reasonable honing time.

Molds can extend their service life when properly honed at the right time.Triple the cutting edge sharpness, but improper grinding can rapidly accelerate the wear of the mold cutting edge, reducing its service life. Mold grinding comes with its dedicated grinding machine, choosing the right one will facilitate users and enhance production efficiency.

When do we need to sharpen our blades?

Actually, there's no set rule for how many times a stamping tool should be sharpened. It ultimately depends on the sharpness of the edge. Key factors to consider are the following:

（Inspect the edge radius; if the radius reaches R0.1mm, it cannot exceed 0.25mm, and it needs to be honed.

（2) Another concern is whether the punching quality has resulted in significant burrs.

（3) The noise emitted during the stamping process of the mold is incorrect; this is when it needs to be sharpened, as the punch has become dull.

How do you sharpen the blade?

We can handle it with a dedicated blade sharpener; of course, it can also be done on a flat grinder. The frequency of honing punches and lower mold blades is typically...4:1, after grinding, adjust the mold height yourself

Note that the thickness of the stamping material determines the amount of tool grinding.

Below, we highlight some key elements to focus on during the grinding process (circle these, they're for the test).

The blade grinding amount is typically 4mm, after which the punch becomes worn out. Failing to replace the punch at this point can easily damage the mold and machine.

We are committed to thoroughly cleaning the surface of the grinding wheel.

3. We recommend using a loose, coarse, soft abrasive wheel, such as WA46KV.

The cutting allowance (cutting depth) for each pass should not exceed 0.015 millimeters. Excessive cutting allowance can cause the mold surface to overheat, equivalent to annealing, softening the mold and significantly reducing its lifespan.

After the blade is sharpened, it must be thoroughly cleaned, demagnetized, and oiled. The edges should be treated with an oilstone, removing any overly sharp edges.

Prepare an ample supply of coolant.