| 一种提高冷镦件模具寿命的设计方法 |
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| 引用本文： | 王凤才,祝文琴. 一种提高冷镦件模具寿命的设计方法[J]. 力学与实践, 2006, 28(1): 61-64 |
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| 作者姓名： | 王凤才 祝文琴 |
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| 作者单位： | 江阴职业技术学院,江苏,江阴,214431 |
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| 摘 要： | 针对采用整模结构的冷镦模具疲劳寿命极低的现状,提出以三层圆筒组合模具结构替代整体模具, 改变模具受力方式,使冷镦件模具达到较高寿命的设计方法．以螺栓圆头的冷镦试验结果为依据,以力学的应力分析方法为基础,应用力学理论,导出了生产实践中实用的组合模具设计原理与经验公式,并举例说明了该方法的应用．
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| 关 键 词： | 冷镦 凹模 应力集中 疲劳寿命 过盈量 |
| 收稿时间： | 2004-09-23 |
| 修稿时间： | 2005-11-23 |
A DESIGN METHOD TO EXTEND THE LIFE OF A MOLD BY COLD UPSET PUNCHING BOLT |
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| WANG Fengcai,ZHU Wenqin. A DESIGN METHOD TO EXTEND THE LIFE OF A MOLD BY COLD UPSET PUNCHING BOLT[J]. Mechanics and Engineering, 2006, 28(1): 61-64 |
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| Authors: | WANG Fengcai ZHU Wenqin |
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| Affiliation: | Jiangyin Polytenic College, Jiangyin 214431, China |
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| Abstract: | In view of the fact that for the cold upset mold of the whole-mold structure, the fatigue life is rather short, a new design method is proposed to replace the whole mold with the mold structure of a three-layer cylinder and thus to change the loading on the mold and to achieve a longer life. According to the testing results of cold upset bolt and the results of stress analysis, empirical formulas are obtained. |
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| Keywords: | cold upset bolt concave mold stress concentration fatigue life overflow |
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