What do I need to pay attention to before using a punch for stamping process?

In the process of stamping processing, punch as an important part of the tool, its performance and quality directly affect the processing quality and productivity of the workpiece. Therefore, before using the punch, we need to carry out strict inspection and maintenance to ensure the smooth running of the stamping process. There are mainly the following points about the precautions before using punches.

First, check the material and size of the punch. The materials of punches for stamping processing are usually high-speed steel, cemented carbide and so on, which have high hardness and wear resistance. When selecting punches, suitable materials should be chosen according to the hardness and thickness of the processed materials. In addition, it is also necessary to check whether the size of the punch matches the size of the mould to ensure that the punch can enter the mould for processing smoothly.

Second, check the surface condition of the punch. The surface of the punches processed by stamping should be kept smooth and clean, and there shall be no cracks, scratches and other defects. If there are defects, it should be repaired or replaced in time. At the same time, it is also necessary to check the lubrication of the punch to ensure that the lubricant is evenly applied to reduce friction and wear in the stamping process.

Third, check the installation and fixation of the punch. The punches for stamping process should be firmly installed on the stamping machine bed without loosening. When installing the punch, attention should be paid to adjusting the height and position of the punch to ensure the matching accuracy between the punch and the mould. If necessary, special gauges can be used to check and adjust.

Fourth, check the cooling system of the punch. During the stamping process, the punch will generate a large amount of heat, which may lead to overheating and damage of the punch. Therefore, it is necessary to ensure that the cooling system of the punch works properly to ensure that the punch works within the appropriate temperature range. In the process of use, the cooling system should also be regularly cleaned of scale and impurities to ensure the cooling effect.

Fifth, regular maintenance and repair of the punch. In the process of stamping, the punch will be continuously impacted and worn out, so it needs to be regularly inspected and maintained. Before using the punch, you can carry out no-load test run to check whether the working condition of the punch is normal. At the same time, the punch should be lubricated, cleaned and replaced regularly to ensure its good working performance.