分析了冲裁凹模工作部分的结构形式。
The structure and composition of work area of matrix was analyzed.
使用该方法冷镦凹模寿命低。
The cold upsetting matrix's life is relatively short in this way.
该模具将凹模设计成活动式，凸模固定。
The female die was designed movable but the male die was fixed.
针对给定的工件，进行挤压凹模的优化设计。
For the given workpiece, we make the optimum design of extrusion female die.
凸模产生的裂纹相对于凹模产生的裂纹向里移动一个距离。
The male die's gap opposite female die's gap move one distance outward.
其凸、凹模需要经过多次的加工，对设计和制造的要求较高。
其凸、凹模需要经过多次的加工，对设计和制造的要求较高。
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