Why is the size of the stamping part unqualified after bending

Stamping is a kind of metal processing product that is widely used and can be seen everywhere in life. Stamping parts processing plants When processing metal stamping parts, they will encounter some problems. Only when these problems are solved, can they be better produced. When the stamping parts are subjected to bending processing, the product size will appear unqualified. What is the reason? The details will be introduced below. 1. The springback of raw materials leads to unqualified size of stamping parts. Countermeasures to reduce springback: ◆Use stamping materials with large ductility and low yield limit and stable physical properties. ◆Improve the calibration process and choose calibration bending instead of free bending; ◆Before bending, the raw materials should be quenched to make the cold hard bottomed raw materials soften before bending and forming; ◆If deformation occurs during the entire stamping die, it cannot be removed; The inclination of the punch and the die should be replaced or repaired, and the gap between the punch and the die should be equivalent to the thickness of the material. ◆Expand the total contact area between the die and the stamping parts, and reduce the total contact area between the punch and the stamping parts. ◆Choose the method of 'giving luck' to reduce the harm of rebound. 2. The positioner is damaged and deformed, and the precise positioning of the strip is prohibited. The positioner must be replaced with a new one. 3. In the non-guided bending die, when adjusting on the punching machine, the lower dead center of the slide block of the punching machine is not adjusted properly, which will also cause the size of the punching and bending parts to be unqualified. 4. The pressing equipment of the abrasive tool is not working well or the pressing effect cannot be achieved at all. Be sure to adjust the pressing force again or replace the compression spring to make everything normal in operation. [Related recommendation] Learn more: What are the methods for polishing the surface of stainless steel? Learn more: Manufacturing characteristics of automobile stamping parts molds Learn more: Points to note in the design of continuous stamping dies (2)