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有效解決五金沖壓過程中對插針插孔尺寸不符的問題有哪些？
有效解決五金沖壓過程中對插針插孔尺寸不符的問題有哪些？五金沖壓件的生產(chǎn)過程中，會碰到插針插孔尺寸偏大或偏小,以及與凸模尺寸相差較大的情景，為了解決此類問題，我們除了思慮成形凸、凹模的籌劃尺寸、加工精度及沖裁間隙等成分外，還要從以下幾個方面去思考：
其一，五金沖壓件沖裁時：
沖裁時產(chǎn)生的沖件毛邊所致，需研修沖切刃口，并注意檢查沖裁間隙是否合理。折彎時沖壓件失穩(wěn)所致，主要針對U形及V形折彎，對沖壓件進行折彎前的導(dǎo)位、折彎過程中的導(dǎo)位，以及折彎過程中壓住材料防止沖壓件在折彎時產(chǎn)生滑移是解決問題的重點。
其二，五金沖壓材料時：
材料所受拉應(yīng)力增大，沖壓件產(chǎn)生翻料、扭曲的趨向加大。產(chǎn)生翻料時，插針插孔尺寸會趨小。對材料的強壓，使材料產(chǎn)生塑性變形，會導(dǎo)致插針插孔尺寸趨大。而減輕強壓時，插針插孔尺寸會趨小。
其三，五金沖壓件的生產(chǎn)時：
如端部修出斜面或弧形，因為沖裁力緩解，沖件易發(fā)生翻料、污蔑，因而，插針插孔尺寸會趨大。而凸模端部為平面，插針插孔尺寸相對會趨小。
What are the problems that can effectively solve the discrepancy of pin socket size in the process of metal stamping? In the production process of metal stamping parts, we will encounter the situation that the size of pin socket is too large or too small, and the size of pin socket is quite different from that of punch. In order to solve this kind of problem, we should consider not only the planning size, processing accuracy and blanking clearance of forming punch and die, but also the following aspects:
First, when punching hardware stamping parts:
It is necessary to study the cutting edge and check whether the blanking clearance is reasonable. It is mainly aimed at U-bend and V-bend. The key to solve the problem is to guide the stamping parts before bending, during bending, and to press the material to prevent the stamping parts from sliding during bending.
Second, metal stamping materials:
With the increase of tensile stress, the tendency of turning over and twisting of stamping parts increases. When turning over occurs, the pin socket size tends to be smaller. The strong pressure on the material will cause plastic deformation of the material, which will lead to the larger size of the pin socket. When the pressure is reduced, the size of the pin socket will be smaller.
Third, the production of metal stamping parts:
If a bevel or arc is made at the end, because the blanking force is relieved, the punching parts are easy to turn over and smear, so the size of the pin socket will be larger. While the punch end is flat, the pin socket size will be relatively smaller.
