锻压技术

基于GD&T的热成形零件公差对模具工艺方案的影响

英文标题：Influence of thermoforming part tolerance on die process scheme based on GD&T

作者：汤燕李彬徐刚志

单位：长安福特汽车有限公司

分类号：TG307

出版年,卷(期):页码：2022,47(10):111-117

摘要：

基于GD&T要求，以某车型A柱下端加强件为例，设计了不同边线公差要求下的热成形模具工艺方案，通过工艺方案的可行性分析，并对比不同工艺对应的全工序零件成本，阐述了产品设计对模具工艺的影响。结果表明: 在满足车身尺寸匹配的前提下，预开发工艺可有效降低工装开发成本，减少激光切割节拍，提高生产效率。热成形零件的金相组织及力学性能均满足设计标准，符合安全性法规要求。同时，通过同步工程对产品的生产工艺方案进行分析，在保证零件工艺性和性能均满足要求的情况下，反向推动产品设计端关于GD&T的选择，强调了同步工程在整车开发中的重要性。

Based on GD&T standards, for A-pillar lower end reinforcement part of an automotive, the process scheme of thermoforming die under different edge tolerance requirements was designed, and the influence of product design on the die process was expounded by the feasibility analysis of the process scheme and the cost comparison of the whole process parts corresponding to different processes. The results show that on the premise of matching the body sizes, the pre-development process can effectively reduce the tooling development cost, reduce the laser cutting cycle, and improve the production efficiency. The metallographic structure and the mechanical properties of thermoformed part meet the design standards and meet the requirements of safety regulations. At the same time, the production process scheme of product was analyzed by simultaneous engineering (SE), and under the condition that the manufacturability and performance of the parts were satisfied, the selection of GD&T on the product design was reversely promoted, and the importance of SE in the vehicle development was emphasized.

基金项目：

汤燕(1985-)，女，硕士，中级工程师,E-mail:ytang24@ford.com

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