锻压技术

液力变矩器涡轮外环叶片槽冲裁力的分析与研究

英文标题：Analysis and research on punching force for turbine outer ring blade groove of hydraulic torque converter

作者：潘文宏

分类号：TH69; TG386. 2; TB31

出版年,卷(期):页码：2023,48(1):84-89

摘要：

为解决液力变矩器手工冲槽加工效率低这一难题, 提高冲裁件的断面质量和冲裁效率, 以YB-265 中等型号冲焊型液力变矩器涡轮外环叶片冲槽加工为研究基础, 采用壳体厚度为3 mm, 且相同规格的10F 钢作为液力变矩器涡轮外环叶片槽冲裁试验材料。利用截面为20 mm×1. 5 mm 的矩形凸模进行冲槽试验, 通过更换凹模来改变冲裁间隙, 以完成在不同冲裁间隙条件下对涡轮外环叶片槽的冲裁试验, 采集并拟合分析冲裁力与冲裁间隙之间的变化曲线。研究发现, 随着冲裁间隙的增大,冲裁力缓慢减小, 且断裂带形成具有一定的滞后性; 光亮带缓慢减小, 分布相对比较均匀, 但毛刺高度却随之增加。经比较经验公式和试验曲线, 得出经验公式所假设的冲裁间隙约为23. 42%t。研究结果对汽车液力变矩器的制造技术和应用具有一定的实际意义和促进作用。

In order to solve the problem of low machining efficiency of manual punching groove for hydraulic torque converter to improve the section quality and punching efficiency of punching parts, based on the punching groove processing of turbine outer ring blade for YB-265 medium-sized model stamping and welding hydraulic torque converter, the 10F steel with a shell thickness of 3 mm and the same specification was used as the test material for punching of turbine outer ring groove for hydraulic torque converter, the punching groove test was conducted by a rectangular punch with a cross-section of 20 mm×1. 5 mm, and the punching clearance was changed by replacing the die to complete the punching test of turbine outer ring groove under different punching clearance conditions. Furthermore, the changing curves between punching force and punching clearance were collected and fitted to analyze. The results show that the punching force decreases slowly with the increasing of punching clearance, and the formation of fault zone has a certain lag. The bright band decreases slowly and the distribution is relatively uniform, but the burr height increases. By comparing the empirical formula and the test curve, the punching clearance assumed by the empirical formula is about 23. 42%t. Thus, the study result has certain practical significance and promoting effect on the manufacturing technology and application of automobile hydraulic torque converter.

基金项目：

2022 年度陕西国防工业职业技术学院科研计划项目(Gfy22-29)

作者简介: 潘文宏(1992-), 男, 硕士, 讲师 E-mail: 1992550881@ qq. com

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