准双曲面齿轮冷摆辗加工模具寿命预测及其工艺
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摘要
为了降低生产成本和提高生产效率,对冷摆辗加工模具寿命进行了预测和工艺优化分析。通过热力耦合有限元数值模拟得到模具在摆辗过程中的应力应变,借助模具寿命估算数学模型,估算出特定工艺参数下的模具寿命。根据寿命计算结果对不同工艺参数组合下的模具寿命进行对比分析,找出各工艺参数对模具寿命的影响规律,并确定合理的工艺参数组合。研究结果表明:当上模转速、上模摆角和摩擦因子分别为40 r·min~(-1)、10°和0. 14时,模具寿命达到了21 464次,寿命得到了显著的提高。
In order to reduce production cost and increase production efficiency,the die life of the cold rotary forging was predicted and the process optimization was carried out. Stress and strain of the die in process of cold rotary forging was obtained by thermal-mechanical coupling finite element numerical simulation method,then the die life under specific process parameters was estimated by mathematical model of the die life estimation. According to calculation results,the die life under different combination of process parameters were analyzed,and influence law of various process parameters on die life was find out. The reasonable combination of the process parameters was determined. The research results show that when the upper die rotation speed,the upper die swing angle and the friction factor are 40 r·min~(-1),10° and 0. 14 respectively,the die life reaches 21 464 times. The service life is significantly improved.
In order to reduce production cost and increase production efficiency,the die life of the cold rotary forging was predicted and the process optimization was carried out. Stress and strain of the die in process of cold rotary forging was obtained by thermal-mechanical coupling finite element numerical simulation method,then the die life under specific process parameters was estimated by mathematical model of the die life estimation. According to calculation results,the die life under different combination of process parameters were analyzed,and influence law of various process parameters on die life was find out. The reasonable combination of the process parameters was determined. The research results show that when the upper die rotation speed,the upper die swing angle and the friction factor are 40 r·min~(-1),10° and 0. 14 respectively,the die life reaches 21 464 times. The service life is significantly improved.
引文
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[15]党玉功,邓效忠,王斌,等.准双曲面齿轮冷摆辗加工新方法的数值模拟[J].中国机械工程,2014,25(9):1250-1254.
[16]党玉功,邓效忠,蒋闯,等.准双曲面齿轮冷摆辗新方案的成形回弹误差补偿[J].航空动力学报,2015,30(5):1251-1259.
[2]党玉功,邓效忠,聂少武,等.准双曲面齿轮冷摆辗加工新方案及其可行性分析[J].北京工业大学学报,2013,39(9):1290-1296.
[3]赵少汴,王忠保.抗疲劳设计——方法与数据[M].北京:机械工业出版社,1997.
[4]赵少汴.局部应力应变法的推广应用[J].机械设计,2000(3):11-13.
[5]黄荣学.冷挤压组合凹模的应力场数值模拟及疲劳寿命估算研究[D].成都:四川大学,2005.
[6]熊贵芳.冷挤压组合凹模失效分析及挤压过程数值模拟[D].湘潭:湘潭大学,2009.
[7]朱彦生.基于有限元分析的精冲凸模寿命估算[D].武汉:武汉理工大学,2007.
[8]程然,胡建华,黄尚宇,等.基于有限元分析的精冲凸模寿命估算[J].塑性工程学报,2010,17(6):119-123.
[9]高振山,邓效忠,陈拂晓,等.基于局部应力应变法的弧齿锥齿轮锻造模具寿命预测[J].机械传动,2013,37(12):31-34.
[10]周杰,赵军,安治国.热挤压模磨损规律及磨损对模具寿命的影响[J].中国机械工程,2007,18(9):2113-2115.
[11]高振山,邓效忠,陈拂晓,等.基于修正Archard理论的螺旋锥齿轮锻造模具寿命预测[J].中国机械工程,2014,25(1):226-229.
[12] KIM D H,LEE H C,KIM B M,et al. Estimation of die service life against plastic deformation and wear during hot forging processes[J]. Journal of materials processing technology,2005,166(3):372-380.
[13]曾韬.螺旋锥齿轮设计与加工[M].哈尔滨:哈尔滨工业大学出版社,1989.
[14]张华.四轴联动数控铣齿机变性法加工准双曲面齿轮的理论和实验研究[D].镇江:江苏大学,2008.
[15]党玉功,邓效忠,王斌,等.准双曲面齿轮冷摆辗加工新方法的数值模拟[J].中国机械工程,2014,25(9):1250-1254.
[16]党玉功,邓效忠,蒋闯,等.准双曲面齿轮冷摆辗新方案的成形回弹误差补偿[J].航空动力学报,2015,30(5):1251-1259.