锻压技术

厚料窄边圈类止动垫圈零件冲压成形工艺仿真及模具设计

英文标题：Stamping process simulation and die design for thick and narrow-edge ring stop washer parts

分类号：TG386.2

出版年,卷(期):页码：2023,48(11):46-53

摘要：

以航空发动机用不锈钢止动垫圈为典型研究对象，针对采用常规冲压成形方法零件精度低的问题，结合实验和有限元仿真分析，研究了高强度材质厚料窄边圈类零件冲压成形的特点、变形规律及尺寸误差来源、缺陷形成机理及避免措施，制定了合理的冲压工艺及模具方案。结果表明：两步法级进冲裁是获得高精度厚料窄边圈类零件的有效工艺方法，凹凸模间隙是影响零件塌角高度的重要因素，半冲裁过程施加下顶力可有效避免因外圈失稳变形引起的塌角和内径尺寸偏差。通过设定合理的模具间隙、下顶力、半冲裁厚度等关键参数，获得了符合设计图纸质量要求的止动垫圈零件。

For stainless steel stop washers used for aircraft engines, in order to solve the problem of low accuracy of parts using conventional stamping methods, the stamping characteristics, deformation rules, dimensional error sources, defect formation mechanism and avoidance measures of thick and narrow-edge ring parts with high strength were studied by combining with experiments and finite element simulation analysis, and a reasonable stamping process and die scheme was formulated. The results show that two-step progressive blanking is an effective processing method for obtaining thick and narrow-edge ring parts with high precision, and the clearance between punch and die is an important factor affecting the height of collapse angle for parts. Applying ejection force during the semi-blanking process can effectively avoid the collapse angle and inner diameter deviation caused by the unstable deformation of outer ring. By setting reasonable key parameters such as clearance between punch and die, ejection force and semi-blanking thickness, the stop washer parts that meet the quality requirements of design drawings are obtained.

基金项目：

国家自然科学基金面上项目（51975200、51975201）

作者简介：邢立军（1988-），男，学士，工程师，E-mail：1913714786@qq.com；通信作者：何洪（1983-），男，博士，副教授，E-mail：hehong_hnu@hnu.edu.cn

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