(1.數理系)
摘 要: 本文比較系統地研究了組合筒模具的強度設計原理和方法。給出了九組組合筒的設計公式。這些公式能適應模具材料為脆性或塑性,以及內外筒材料相同或不同時的各種情況,用來設計內外筒等強度,內簡無張力、內筒比外筒更安全等三類不同要求的組合筒模具。由于這些公式大多數是第一次推薦到模具設計中來,文中通過三個典型實例分析介紹了設計方案的選擇;指出了各設計方案的特點和差異;并討論了它們在粉末冶金模具設計中的適用性問題。
關鍵字: 組合筒； 設計方案； 設計公式； 過盈量； 模具設計； 等強度設計； 極限承載能力； 外筒； 模具材料； 設計要求
（1.數理系）
Abstract:A more systematic study of the principle and the method for designing compasite cylinder die from the point of view of strength is completed in this paper. In order to give a series of methods for designing the sizes of dies used in powder metallurgy nine groups of formulae for designing compasite cylinder are presented. These formulae are applicable to a variety of cases in which the materials of dies may be brittle or plastic, in addition, the materials of inner and external cylinders may be the same or different from each other. By using these formulae three types of compasite cylinder die can be designed. They are desired to satisfy one of the following requirements, (1) of equal strength in inner and external cylinder, (2) without tension in the inner cylinder, (3) of safer inner cylinder. Since most of them are firstly recommended to the design of P/M die, three typic examples are discussed(which are the dies for pressing and forging and the cylinders for isostatic pressing) to explain the choice of design variants, to show the feature and particularity of different variants and to estimate their availability in the design of P/M die.
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