锻压技术

一种提高长轴类转向节锻件材料利用率的组合模具

英文标题：A kind of combined mold on improving material utilization rate for long shaft steering knuckle forgings

分类号：TG31

出版年,卷(期):页码：2022,47(8):185-192

摘要：

针对立式锻造工艺成形长轴类转向节锻件时存在的锻件轴部充填困难、材料利用率低等问题，以某长轴转向节锻件为例，提出了一种新的组合模具，该模具中的镦粗工序对坯料进行预分料，使镦粗后的坯料投影全部落在制坯模具型腔内；制坯、预锻模具采用阻力墙组合结构，提高坯料轴部的充填能力；制坯、终锻模具设计定位结构，提高坯料的定位准确性。并结合数值模拟仿真分析技术，模拟并分析了新组合模具的成形性能，最后通过生产试验验证了新组合模具的可行性。结果表明：采用新的组合模具，下料重量由原来的47.7 kg减小至42.9 kg，材料利用率达到了91%，较优化前的模具结构提高了8%。

Aiming at the problems of difficult filling in the shaft of forgings and low material utilization rate in the vertical forging process for long shaft steering knuckle forgings, for a long shaft steering knuckle forgings, a new combined mold was proposed. In this mold，the billet was pre-separated in the upsetting process so that the projection of billet after upsetting fell into the cavity of billet-making mold, the billet-making and pre-forging molds adept a combined structure of resistance wall to improve the filling capacity of billet shaft, and the positioning structure of billet-making and final forging molds was designed to improve the positioning accuracy of billet. Combined with numerical simulation analysis technology, the forming performance of the new combined mold was simulated and analyzed, and the production test verified the feasibility of the new combined mold. The results show that the material weight is reduced from 47.7 kg to 42.9 kg by using the new combined mold, and the material utilization rate reaches 91%, which is 8% higher than the mold structure before optimization.

基金项目：

国家自然科学基金资助项目（52075058）

作者简介：陈天赋（1976-），男，学士，高级工程师，E-mail：13871600196@139.com；通信作者：彭海军（1992-），男，硕士，助理工程师，E-mail：1342550938@qq.com

参考文献：

[1]唐庆顺, 杨元慧,卢森加, 等.汽车转向节模锻工艺改进[J].热加工工艺,2014,43(19):128-130.

Tang Q S, Yang Y H, Lu S J, et al. Die forging process improvement of automobile steering knuckle[J]. Hot Working Technology, 2014,43(19):128-130.

[2]肖永清, 杨忠敏.汽车前桥及转向系统结构与维修[M].北京：国防工业出版社，2004.

Xiao Y Q, Yang Z M. Structure and Maintenance of Automobile Front Axle and Steering System[M].Beijing: National Defense Industry Press,2004.

[3]俞汉清, 陈金德.金属塑性成形原理[M].北京:机械工业出版社,2019.

Yu H Q, Chen J D. The Principle of Metal Plastic Forming[M]. Beijing: China Machine Press,2019.

[4]陈婕, 邱春林,李长生,等.两种模型对锻造成形数值模拟结果的影响[J].热加工工艺,2022,51(11):82-86.

Chen J, Qiu C L, Li C S, et al. Effect of two models on numerical simulation results of forging forming[J]. Hot Working Technology,2022,51(11):82-86.

[5]田世伟, 江海涛,张业飞, 等.锻造技术在轻金属中的应用[J].精密成形工程,2020,12(6):9-15.

Tian S W, Jiang H T, Zhang Y F, et al. Application of forging technology in light metals[J], Journal of Netshape Forming Engineering, 2020,12(6):9-15.

[6]周杰, 刘敏,王平, 等.汽车曲轴终锻模阻力墙新型结构参数试验[J].机械工程学报,2007，(8):229-234.

Zhou J, Liu M, Wang P, et al. Expeiment on parameters of new finishforging die structural of automobile crankshaft called resistance wall [J]. Chinese Journal of Mechanical Engineering, 2007，(8):229-234.

[7]王梦寒, 门正兴,周杰,等.一种带阻力墙的新型飞边槽结构设计[J].热加工工艺,2008，37(17):62-64.

Wang M H, Meng Z X, Zhou J, et al. Structural design on a new flash with resistance wall[J]. Hot Working Technology, 2008，37(17):62-64.

[8]王冬良, 陈南.基于数值模拟的汽车转向节精密成形工艺[J].锻压技术,2021,46(11):38-43.

Wang D L, Chen N. Precision forming process for automobile steering knuckle based on numerical simulation[J]. Forging & Stamping Technology, 2021,46(11):38-43.

[9]刘雅辉, 刘淑梅,何文涛, 等.阻力墙设计对转向节模锻成形工艺的影响[J].塑性工程学报,2015,22(3):44-48.

Liu Y H, Liu S M, He W T, et al. Effect of resistance wall design on the drop forging for steering knuckle[J]. Journal of Plasticity Engineering, 2015,22(3):44-48.

[10]李蓬川, 周文武,杨靖雲.某机匣锻件模锻时新的坯料定位方法及坯料优化设计[J].大型铸锻件,2018，(2):5-7，13.

Li P C, Zhou W W, Yang J Y. A new method of billet positioning and optimization design of billet forming process of aeroenginee case[J]. Heavy Casting and Forging, 2018，(2):5-7，13.

[11]欧文学. 大型模锻件坯料的定位状态分析与摩擦参数测定[D].重庆：重庆大学,2016.

Ou W X. Analysis of Positioning Status of Large-Scale Forging Billets and the Test of Friction Parameters[D]. Chongqing：Chongqing University,2016.

[12]贾向, 李凤武,赵立国,等.热成型模具几种典型定位问题的改善[J].模具制造,2017,17(2):25-27.

Jia X, Li F W, Zhao L G, et al. Series of typical location problems improvement for the hot forming die[J]. Die & Mold Manufacture,2017,17(2):25-27.

服务与反馈：

【文章下载】【加入收藏】