锻压技术

某汽车变速器126R档齿温锻缺陷分析及预锻件形状优化

英文标题：Defect analysis on warm forging and shape optimization on preforging part for an automobile transmission with 126R gear tooth

作者：陈伟文吴先洋张海英周煊

单位：上海汽车变速器有限公司

关键词：闭式温锻工艺预锻件成形载荷模具寿命有限元模拟

分类号：TG315.2

出版年,卷(期):页码：2019,44(8):6-11

摘要：

以某汽车变速器126R档齿作为研究对象，利用有限元模拟软件Deform3D建立126R档齿闭式温锻成形过程的有限元模型，得到其在成形过程中的受力情况和材料流动情况，研究了126R档齿在成形过程中法兰充填不完整、成形载荷大、模具寿命低等问题，分析了影响终锻成形和模具受力的影响因素。从而提出了新的预锻工艺方案，对优化后的方案进行模拟，通过与原工艺方案对比分析，确定优化后的新工艺方案具有可实施性，并进行实际生产验证。结果表明，优化后的工艺可以在较低成形载荷的条件下获得充填完整的、符合产品技术要求的锻件，同时能提高模具寿命和生产效率。

For an automobile transmission with 126R gear tooth, a finite element model of its closed warm forging process was established by FE software Deform3D, and the force and material flow in the forming process were obtained. Then, the problems of incomplete filling of flange, large forming load and low mold life during the forming process of 126R gear tooth were studied, and the influencing factors on final forging forming and mold force were analyzed. Therefore, the new preforging process scheme was proposed, and the optimized process scheme was simulated. Furthermore, the feasibility of the new optimized process scheme was identified by comparing and analyzing with the original process scheme, and the optimized process was verified by actual production. The results show that the optimized process can form the parts to fill completely and meet the technical requirements of the product under the conditions of lower forming load and can improve the life and production efficiency of the mold.

基金项目：

陈伟文（1994-），男，学士，工程师 Email：417706079@qq.com

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