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摘要：
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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。
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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.
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基金项目：
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湖南省教育科学研究项目（15C0152）；衡阳市科技局项目（016KG48）
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作者简介：
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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
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