在交叉支撑装置中的另一个重要零件——锁紧板的制造工艺中，采用了冲头保护装置，解决了失稳折断问题。
In the manufacturing of the lock plate as an important part placed in the crossing support device, we solved the problem of die breaking by using of stroke protecting device.
所有模具零件，冲头，模板在外观上相似的地方需要用技术的方法来证实没有用错材料。
All sections, punches, and buttons that are similar in appearance are to have mistake proofing techniques used.
一种冲头、用于在中空零件中形成相对的孔的设备和方法以及由此形成的零件。
A punch, apparatus and method for forming opposing holes in a hollow part, and a part formed therefrom.
该冲头具有比零件的截面更大的长度，以便冲头穿过零件的进一步行进在零件内冲压出与入口孔相对的出口孔。
The punch has a length greater than a cross-section of the part such that further advancement of the punch through the part punches an exit hole in the part opposite the entry hole.
对紫铜长支管T型管复合胀形工艺进行了试验研究，介绍了包括冲头挤压力的公式与计算，试验中所用复合胀形模具结构和部分重要零件的设计与选取及试验结果。
A technology to form copper long-branch tee pipe directly in compound forming of bulging and extrusion is developed, the formula and calculation of the forming force are introduced.
对紫铜长支管T型管复合胀形工艺进行了试验研究，介绍了包括冲头挤压力的公式与计算，试验中所用复合胀形模具结构和部分重要零件的设计与选取及试验结果。
A technology to form copper long-branch tee pipe directly in compound forming of bulging and extrusion is developed, the formula and calculation of the forming force are introduced.
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