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本文以不致产生金属死区,且又使单位挤压力、机加工余量较小为目标,初步探讨了正挤空心件凹模锥角的合理设计。并导出了平底及锥形凹模内正挤空心件时单位挤压力的计算公式。
In this paper, a reasonable design of the die cone angle of the positive extrusion hollow part is preliminarily discussed with the goal of not producing metal dead zone and making the unit squeezing force and machining allowance smaller. The formula of unit squeezing force when the hollow part is being extruded in flat bottom and conical die is deduced.