Most of the causes of stamping parts bump is due to the raw materials or mold appearance attached to the dust or iron filings caused by the appearance of the product, it makes the appearance of the product quality is low at the same time also make the productivity greatly reduced. So how do we avoid this problem? Below is a summary of the following 5 ways to reduce the concavity and convexity of hardware stamping parts according to the practice.
Reduce the stamping parts concavity and convexity of the 5 major methods:
1, the inspection and correction of stretching die: stretching die need to do regular inspection and maintenance, in order to reduce the generation of concavity and maintain a stable state. The usual practice is to use samples to check the bonding scratches of the crimp ring and the condition of the processing surface (concave die round corner, convex die round corner).
2. Inspection and correction of shear die: The reason for bumps and dents after shear process is due to iron powder generated during the shear process, so it is necessary to observe iron powder before stamping to avoid bumps and dents.
3, the appropriate speed of the robot: for semi-automatic stretching die production, when stretching the convex die in the lower die position, the speed of the robot is very fast, the burr will fall on the upper part of the convex die, resulting in concavity. In order to avoid this problem, we can do before the production of pieces of material out of the test, reasonable settings for the speed of the robot and the material out of the angle, so that it will not touch the pieces and the lower mold.
4, check the cut-off surface: cut-off coil, cut-off die wear and breakage will produce a lot of tiny iron powder attached to the edge, so in the stamping production must be in the material area or the stamping line before checking the double cut-off surface, and timely cleaning of the sheet to remove burrs.
5, plate cleaning device inspection: stamping production before the need to check and trim cleaning at the same time to clean the settlement, so that it may be more effective in cleaning the plate, which is also very much needed, and also need to pay attention to the rollers gap and the quality of cleaning oil. Detailed method is coated with red paint on a piece of steel plate and then make it subvert the cleaning settlement, and then check the red paint is withdrawn before the cause of the shape, assuming that the removal rate is not up to the standard, then it is necessary to check and adjust the cleaning settlement. If the cleaning oil is lacking, it is necessary to reduce it in time.
Mastering the 5 major ways to reduce the hardware stamping parts bump can be avoided as much as possible stamping parts bump and produce defective products.