偏心套转速对螺旋锥齿轮摆辗成形的影响
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摘要
摆辗成形过程中不同的上模运动轨迹对螺旋锥齿轮的摆辗成形有重要的影响,而上模的运动轨迹由内外偏心套的转速决定。单辊摆辗过程中,偏心套转速的改变会引起玫瑰线和螺旋线运动周期和轨迹形状的改变。以材料为20CrMnTiH钢的螺旋锥齿轮为研究对象,通过UG建立了三维有限元模型,并利用Deform-3D详细研究了当偏心套转速不同时,轨迹运动周期和轨迹形状的变化对摆辗成形螺旋锥齿轮成形力能参数、变形均匀性、齿根损伤因子和接触面积的影响规律。结果表明:不同的偏心套转速对玫瑰线和螺旋线摆辗成形螺旋锥齿轮的影响规律具有相似性,螺旋锥齿轮在玫瑰线和螺旋线轨迹摆辗成形过程中取周期T=3 s、转速比|n_1/n_2|=6/7较为合适。
The different trajectories of upper die have an important influence on the rotary forging of spiral bevel gears,and the trajectory of upper die is determined by the rotational speed of the inner and outer eccentric sleeves. Therefore,the change of rotational speed of eccentric sleeve in the rotary forging process with single roller causes the change of motion period and trajectory shape of rose line and helical line. For the spiral bevel gear made by material 20CrMnTiH steel,a three-dimensional finite element model was established by UG,and the influences of trajectory motion period and trajectory shape changes on forming force and energy parameters,deformation uniformity,root damage factor and contact area of spiral bevel gears in the rotary forging process were studied by Deform-3D in detail under the different rotational speeds of eccentric sleeve. The results show that the influences of different eccentric sleeve rotational speeds on the spiral bevel gears formed by rose line and helical line rotary forging are similar,and the period T = 3 s and the speed ratio |n_1/n_2| = 6/7 in the process of roseline and helical line rotary forging are more suitable.
The different trajectories of upper die have an important influence on the rotary forging of spiral bevel gears,and the trajectory of upper die is determined by the rotational speed of the inner and outer eccentric sleeves. Therefore,the change of rotational speed of eccentric sleeve in the rotary forging process with single roller causes the change of motion period and trajectory shape of rose line and helical line. For the spiral bevel gear made by material 20CrMnTiH steel,a three-dimensional finite element model was established by UG,and the influences of trajectory motion period and trajectory shape changes on forming force and energy parameters,deformation uniformity,root damage factor and contact area of spiral bevel gears in the rotary forging process were studied by Deform-3D in detail under the different rotational speeds of eccentric sleeve. The results show that the influences of different eccentric sleeve rotational speeds on the spiral bevel gears formed by rose line and helical line rotary forging are similar,and the period T = 3 s and the speed ratio |n_1/n_2| = 6/7 in the process of roseline and helical line rotary forging are more suitable.
引文
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[9]Samolyk G.Investigation of the cold orbital forging process of an Al Mg Si alloy bevel gear[J].Journal of Materials Processing Tech.,2013,213(10):1692-1702.
[10]胡晓,刁可山,李雷.Dynaform与Autoform在铝板冲压成形模拟中的比较[J].塑性工程学报,2017,24(3):31-35.Hu X,Diao K S,Li L.Comparison of Dynaform with Autoform in the simulation of aluminum sheet stamping[J].Journal of Plasticity Engineering,2017,24(3):31-35.
[11]郭晓宇.多轨迹摆辗机运动轨迹的分析[J].机械工程与自动化,2008,(6):130-131.Guo X Y.Analysis of motion track of multiorbital rotary forging machine[J].Mechanical Engineering&Automation,2008,(6):130-131.
[12]冯文成,姚万贵,蒋鹏.摆辗机螺旋线和多叶玫瑰线的三檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪维成形轨迹仿真[J].塑性工程学报,2015,22(2):8-11.Feng W C,Yao W G,Jiang P.Simulation and analysis of threedimensional forming trajectory of spiral line and multi-branches rose curve of orbital forming press[J].Journal of Plasticity Engineering,2015,22(2):8-11.
[2]胡正寰.零件轧制成形技术[M].北京:化学工业出版社,2010.Hu Z H.Technology of Rotary Metal Forming[M].Beijing:Chemical Industry Press,2010.
[3]Samolyk G.Investigation of the cold orbital forging process of an Al Mg Si alloy bevel gear[J].Journal of Materials Processing Technology,2013,213(10):1692-1702.
[4]Montoya I,Santos M T,Pérez I,et al.Kinematic and sensitivity analysis of rotary forging process by means of a simulation model[J].International Journal of Material Forming,2008,(1):383-386.
[5]Rusz S,Dyja H.The influence of technological parameters on the rotary pressing process[J].Journal of Materials Processing Technology,2004,157(7):604-608.
[6]Zhu C D,Jiang X,Dai T L.Research on technology of twin rollers rotary forging of spiral bevel gears[J].Ironmaking&Steelmaking,2015,42(8):632-640.
[7]Deng X B,Hua L,Han X H,et al.Numerical and experimental investigation of cold rotary forging of a 20CrMnTi alloy spur bevel gear[J].Materials and Design,2011,32(3):1376-1389.
[8]冯文成.冷摆辗机摆头运动轨迹与成形力的理论分析及试验研究[D].北京:机械科学研究总院,2015.Feng W C.Theoretical analysis and experimental research on orbital head trajectory and forming force of orbital cold forming press[D].Beijing:China Academy of Machinery Secience and Technology,2015.
[9]Samolyk G.Investigation of the cold orbital forging process of an Al Mg Si alloy bevel gear[J].Journal of Materials Processing Tech.,2013,213(10):1692-1702.
[10]胡晓,刁可山,李雷.Dynaform与Autoform在铝板冲压成形模拟中的比较[J].塑性工程学报,2017,24(3):31-35.Hu X,Diao K S,Li L.Comparison of Dynaform with Autoform in the simulation of aluminum sheet stamping[J].Journal of Plasticity Engineering,2017,24(3):31-35.
[11]郭晓宇.多轨迹摆辗机运动轨迹的分析[J].机械工程与自动化,2008,(6):130-131.Guo X Y.Analysis of motion track of multiorbital rotary forging machine[J].Mechanical Engineering&Automation,2008,(6):130-131.
[12]冯文成,姚万贵,蒋鹏.摆辗机螺旋线和多叶玫瑰线的三檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪维成形轨迹仿真[J].塑性工程学报,2015,22(2):8-11.Feng W C,Yao W G,Jiang P.Simulation and analysis of threedimensional forming trajectory of spiral line and multi-branches rose curve of orbital forming press[J].Journal of Plasticity Engineering,2015,22(2):8-11.