In the production process, as long as it is a manual operation, there is a probability that errors will cause the quality of the produced goods. For example, in the production of self-tapping screws, there are some problems such as head snoring, out of roundness, etc. What are the reasons for these situations?
1, the head of the screw is not round. The reason is that the choice of a die of the screw die is improper or the punching die is not full.
2, the screw has flash or burr. The reason for this is a poor stamping, which is mainly caused by excessive clearance between punch and die holes or short punches.
3, the screw's head smashed. This is due to the poor installation of the screw die and the improper adjustment of the machine.
4, screw head cracking, screw head cracks. The reason may be that the quality of the screw wire itself is a problem. Therefore, before starting the screw wire, the quality department must check and take a look. Especially the stainless steel screw wire, to check that it is stainless steel 201, that is 304 stainless steel. It may also be due to errors in the use of a die, or the failure of the viscosity of the lubricant.