1) pre-piercing bottom hole
预冲底孔
3) bottom flushing outlet
冲砂底孔
1.
Model test for dam bottom flushing outlet of DAPEIN(Ⅰ) Hydropower project
DAPEIN(Ⅰ)水电工程大坝冲砂底孔体型试验
4) pre-punched hole
预冲孔
1.
The effect of processing pre-punched hole on the forming state of sheets is analyzed.
分析了工艺预冲孔对板料成形状态的影响,并把数值模拟引入工艺预冲孔设置的研究。
5) pre-punching hole
预冲孔
1.
A graphical method,by which the pre-punching hole forstreth flanging on curved sheet can be determined,is suggested.
本文介绍了确定曲面体上孔翻边预冲孔形状的图解法——展开求域,原位定形法的求解步骤和应用效果。
2.
Through analyzing drawing forming process of bearing maintainer,found out the cause of part cracking, improved original forming process project, through eatablishing pre-punching hole and forming step by step, improved forming condition, redesigned the die, and production quality was good.
通过对轴承保持架拉伸工艺及成形过程的分析,找出了零件破裂的原因,改进了原加工工艺方案,通过设置预冲孔、分步成形,改善了成形条件,据此重新设计及改进模具,生产出了合格的产品。
6) passing punch
预冲孔冲头
补充资料：设备安装前的准备工作——设备的预装配与预调整
设备安装前的准备工作——设备的预装配与预调整 | ||
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说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条