We take one typical example, introduce hydraulic drawing, give more details of phenomena, analyze it and solve the problem at the end.

本文选取其中较典型的一例，通过对液压原理图的解读，进行故障现象的描述和分析，最后彻底解决了问题。

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This paper mainly introduces the applications of several new techniques of inner high pressure forming, hydraulic drawing and hot forming in automotive stamping parts forming operations.

介绍了液力拉深、内高压成形和热成形等几种新工艺在汽车冲压件成形中的应用。

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Hydraulic drawing-core mechanism was adopted for two-side of inner-sinking in the die casting die, and pre-resetting mechanism was set to avoid the interference of core slide with ejector pin.

压铸件内凹处两侧采用液压抽芯机构抽芯，为防止滑块型芯与推杆发生干涉而设置了预复位机构；

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