|
摘要：
|
|
摘要：为预测变速叉预锻凹模的使用寿命，基于数值模拟和Archard理论，对变速叉热锻成形过程中凹模磨损的主要区域以及导致磨损的原因进行分析，并利用正交试验对预锻凹模磨损严重区域进行优化，根据预锻凹模磨损严重区域单次最优磨损量与总磨损量的关系，建立数学拟合公式求解。模拟结果可知，热锻成形过程中，凹模磨损最严重的位置在P4区域，P4区域凹模磨损量最优的工艺参数组合为A1B2C3D3，通过建立P4区域凹模磨损量和锻造次数间的函数关系，证明了变速叉总磨损量与单次磨损量不仅仅是简单的线性关系，并提出锻造次数和变速叉凹模总磨损量的求和公式，求得变速叉预锻凹模寿命为92130次。模拟结果有效地提高了变速叉实际生产中的研发成功率，降低了试模成本。
|
|
In order to predict the service life of pre-forging die for shifting fork, based on numerical simulation and Archard theory, the main areas of die wear during the hot forging process of shifting fork and the causes of wear were analyzed, and the region with severe wear of pre-forging die was optimized by the orthogonal test. Then, according to the relationship between the single optimal wear amount and the total wear amount in the region with severe wear of pre-forging die, the mathematical fitting formula was established to solve. The simulation results show that during the hot forging process, the most severe position of die wear is in P4 area, and the optimal process parameters combination for the die wear amount in the P4 area is A1B2C3D3. Furthermore, it is not just a simple linear relationship between the total wear amount of shift forking and the single wear amount which is proved by establishing the functional relationship between the die wear amount in P4 area and the forging times, and the summation formula of the forging times and the total die wear amount for shifting fork die are proposed to obtain that the life of pre-forging die for shifting fork is 92130 times. Thus, the simulation results effectively improve the success rate of research and development in the actual production of shifting fork and reduce the cost of trial production.
|
|
基金项目：
|
|
湖南省教育科学研究项目（15C0152）；衡阳市科技局项目（016KG48）
|
|
作者简介：
|
|
陆元三(1971-)，男，学士，副教授，E-mail：3450423480@qq.com；通讯作者：王培安(1990-)，男，硕士，助教，E-mail：1694661207@qq.com
|
|
参考文献：
|
[1]孙宪萍.挤压模具的摩擦学优化设计[D].合肥:合肥工业大学,2005.
Sun X P. Tribology Optimum Design of Extrusion Die[D]. Hefei: Hefei University of Technology,2005.
[2]殷燕芳.模具的摩擦与润滑[J].机械研究与应用,2007,20(1):9-10,13.
Yin Y F.Friction ＆ lubrication of mould[J].Mechanical Research ＆ Application,2007,20(1):9-10,13.
[3]孙宪萍,刘强强,杨兵,等.基于磨损正交试验的温挤压模具优化设计[J].润滑与密封,2016,41(6):73-76,92.
Sun X P,Liu Q Q,Yang B, et al.Optimization design on warm extrusion die based on orthogonal experiments of wear[J]. Lubrication Engineering,2016,41(6):73-76,92.
[4]褚忠,瞿伟,刘铭心,等.冷挤压模具磨损优化设计[J].铸造技术,2017,38(12):2895-2899.
Chu Z, Qu W, Liu M X, et al.Optimum design of cold extrusion die wear[J].Foundry Technology,2017,38(12):2895-2899.
[5]汪学阳,王华君,王华昌,等.基于FEM的热锻模磨损分析与寿命预测[J].润滑与密封,2008, (5):49-53.
Wang X Y,Wang H J,Wang H C, et al. Prediction of hot forging die service life based on finite element method[J]. Lubrication Engineering,2008, (5):49-53.
[6]施渊吉,黎军顽,吴晓春,等.汽车法兰盘热锻模具磨损失效的实验分析和数值研究[J].摩擦学学报,2016,36(2):215-225.
Shi Y J,Li J W,Wu X C, et al. Experimental and numerical study on the wear failure of hot forging die of automobile flange[J].Tribology,2016,36(2):215-225.
[7]李振红,黄英娜,张质良.亚热精密成形过程模具磨损的数值模拟研究[J].精密成形工程,2010,2(2):5-9.
Li Z H, Huang Y N, Zhang Z L. Die wear simulation of semi-hot precision forming process[J]. Journal of Netshape Forming Engineering,2010,2(2):5-9.
[8]王培安,吴淑芳,苗润忠.端盖热挤压成形方案优化设计及多目标模具磨损失效的分析[J].石河子大学学报: 自然科学版,2019,37(6):661-671.
Wang P A,Wu S F,Miao R Z. Optimization design of end cap hot extrusion forming scheme and failure analysis of multi-objective die wear[J].Journal of Shihezi University: Natural Science,2019,37(6):661-671.
[9]Lee R S,Jou J L. Application of numerical simulation for wear analysis of warm forging die[J]. Journal of Materials Processing Technology, 2003, 140(1-3):43- 48.
[10]林高用,冯迪,郑小燕,等.基于Archard理论的挤压次数对模具磨损量的影响分析[J].中南大学学报:自然科学版, 2009, 40(5): 1245-1251.
Lin G Y, Feng D, Zheng X Y, et al. Analysis of influence of extrusion times on total die wear based on Archard theory[J].Journal of Central South University: Science and Technology,2009,40(5):1245-1251.
[11]赵震,陈军,吴公明.冷温热挤压技术[M].北京:电子工业出版社,2008.
Zhao Z,Cheng J,Wu G M.Cold Warm Hot Extrusion Technology[M].Beijing:Publishing House of Electronics Industry,2008.
[12]贾宪安,胡九锡.热挤压工艺与模具设计[M].北京:机械工业出版社,1986.
Jia X A,Hu J X.Hot Extrusion Process and Die Design[M].Beijing:China Machine Press,1986.
[13]王培安,郭欢欢.基于正交试验花键冷挤压成形过程参数分析[J].西华大学学报:自然科学版,2019,38(6):92-99.
Wang P A,Guo H H.Parametric analysis of spline cold extrusion process based on orthogonal test[J].Journal of Xihua University: Natural Science Edition,2019,38(6):92-99.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
