外文翻譯-沖壓頭斷裂問題的解決方法英文-其他專業(yè)-展示頁
2025-01-31 00:33本頁面
【正文】 ious when. Please note that the tensile strength, stripping may not be enough to cause by. The failure mode is usually the cyclical loading and crack propagation in failure. Figure 2 shows the failure of stamping part of startup. 第 2 頁 共 9 頁 punch fracture problem in the head and stamping agency usually start gradually add. Figure 3. Close observation of the head and stamping institutions to join. Figure 2 shows the hardened tool in the bottom of the stamping head locator. Normally, support plate heat 38RC toughness is to should be 45RC to the extent, see figure 3 close observation. In good design, punch and positioning circle should inevitably have a small round or clearance to acmodate punch in the corners of the mould at the extruding part. Punch bending and cracks As head of the metal stamping, cutting in stamping mould, support plate and generate sheath pressive strain. This will cause as shown in figure 4, namely the bending deformation or punching head. In the process, a burst of action will cause recoiling tensile strain concentration punching head, as shown in figure 5. Press the head bent joints, and can lead to the head 第 3 頁 共 9 頁 of the crack and stamping forming. Figure 4. Deformation deflection punch and pressed floor. Figure 5. In punch through mode and stripping terminated when pressive strain, will cause the tensile strain pressure punch. Crack growth or reproduction Once formed crack, continue to do a high load of periodic motion will continue to crack up. Eventually leads to punching head from the anization of the result pletely. If the punch and stamping institutions, when the pressure in the separation of periodic function under the punch can fall from the positioning circle. If this happens, will be serious damage mould processing equipment, the damage, the possibility of staff. Stamping mould and other steel mold destroyed ponents, will lead to sharp pieces in the air, the movement of highspeed do staff will make serious or even deadly damage. 第 4 頁
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