What is punching machine reasons for flashing during punching? In the processing of metal products, such as die punching, similar problems often occur at the edges of stamping parts, that is, "burrs on the edges of stamping parts". This burr not only affects the appearance of the product, but may also cause inconvenience to the user. Therefore, controlling and reducing the flashing of stamping parts is an important quality control indicator in the manufacturing industry. Understand punching machine reasons for flashing during punching and find solutions to ensure the safety and comfort of the product.
Punch machines process metal and produce flash when processing corner pieces.
punching machine reasons for flashing during punching, what is hard flashing and what is soft flashing? In short, "hard flashing" is generated during the manufacturing process of metal stamping products. Compared with soft burrs, it is harder and easier to detect. It is an indicator of the quality of metal stamping process. In production and quality control, the control of hard flashing is crucial to ensure the surface smoothness and functionality of the product.
punching machine reasons for flashing during punching
1. Excessive toughness and insufficient hardness of the material: During the punching process, if the hardness of the material selected for the hardware fails to meet the appropriate standard, its lower hardness characteristics will make the material prone to deformation and extrusion when facing the punching force. This lack of physical properties directly leads to the unevenness of the punching edge, which is specifically manifested as the generation of burrs and the slight misalignment of the hardware as a whole, thus affecting the final quality of the product.
2. Mold structural defects and mechanical imbalance: As the core tool of the stamping process, the structural design of the mold directly affects the accuracy and stability of the punching process. When there are unreasonable aspects in the mold design, such as the balance between the tangential force and the friction force is broken, it will cause additional stress concentration and uneven deformation during the punching process of the hardware. This mechanical imbalance ultimately leads to the flashing phenomenon, that is, irregular sharp protrusions or burrs appear on the edge of the punch.
3. Improper management of punch wear: As a key component that directly acts on the surface of the material, the state of the punch directly determines the accuracy and quality of the punching process. If the punch is not properly maintained and managed during use, resulting in excessive wear or improper selection, the accuracy and efficiency of punching will be directly reduced. This improper wear not only exacerbates the uneven force of the hardware during the punching process, but also leads to the frequent occurrence of flashing problems, further affecting the overall appearance and performance of the product.
Punching machine solution to the flash caused by punching
Punching machine reasons for flashing during punching, in the process of punching die processing, poor cape is a common problem, which is the uneven edge and thorny phenomenon of the workpiece caused by die wear, uneven material hardness or excessive punching force during the punching process. To solve this problem, we need to start from the following aspects: first, ensure the accuracy and quality of the punching die processing, second, choose the appropriate punching material, third, control the punching parameters, and fourth, do a good job of follow-up processing. Only in this way can the incidence of cape in the processing of stamping die be effectively reduced and the overall quality of the product be improved.
1. Damage to the die edge: The primary problem is the cracking or wear of the die edge, which directly leads to the inability of the edge to accurately cut the material during the punching process, resulting in excessive flashing. To address this problem, the damaged edge needs to be thoroughly ground and repaired immediately to ensure that the edge is sharp and flat to restore its original cutting performance.
2. Improper die gap: The gap between the punch and the die in the die is too large, which is another key factor causing poor flashing. Too large a gap makes it impossible for the material to be completely and evenly sheared during stamping, resulting in poor flash. To solve this problem, wire cutting technology is required to accurately adjust and reconfigure the gap between the punch and the die to ensure that it is within a reasonable range to ensure the quality of the stamped parts.
3. Insufficient finish of the die blade: The finish of the die blade surface directly affects the forming quality of the stamped parts. If the straight wall of the blade has poor finish, it will cause unnecessary friction and pulling with the material during the stamping process, which will lead to flash. Therefore, the straight wall of the die blade needs to be finely polished to improve its surface finish to reduce friction and flash formation.
4. Excessive ejection force: High-speed punching machine punching hardware, during the stamping process, if the ejection force is set too large, it will generate excessive reverse pulling force when the material is ejected, pulling part of the material out from the edge, forming flash. To eliminate this undesirable phenomenon, it is necessary to adjust the ejection mechanism, especially replace the spring with appropriate stiffness to reduce the ejection force, ensure that the material is evenly and steadily stressed during the ejection process, and avoid the occurrence of flashing.
In summary, there are three reasons for flashing during punching. We can effectively solve the problem of poor flashing of metal stamping parts and improve the overall quality of the product by carefully inspecting and repairing the die edge, accurately adjusting the die gap, improving the finish of the die edge, and reasonably adjusting the ejection force.
