|
摘要：
|
|
基于约束分流原理,以某厂生产的减速小齿轮为例,采用数值模拟和物理试验相结合的方法,对直齿圆柱齿轮精锻成形工艺进行了深入研究。通过分析小芯棒约束分流和凸缘分流两种方案下坯料孔径的大小对直齿圆柱齿轮成形过程的影响,确定出可以改善充填性与降低工作载荷的最佳工艺方案:浮动凹模下坯料尺寸为直径38 mm、孔径16 mm、高度27.3 mm的小芯棒约束分流与固定凹模下坯料尺寸为直径38 mm、孔径18 mm、高度25.5 mm的凸缘分流。由小芯棒约束分流浮动凹模形式下的力-行程曲线可知,试验结果与有限元数值模拟结果能很好地吻合。
|
|
Taken a small reduction gear as an example,based on the principle of restrained distributary,precision forging process of spur gears was studied by the method of numerical simulation and physical experiment.Through the analysis of the influences of the blank aperture size to spur gears forming process on small mandrel restrained distributary and lugs distributary the optimised processes of improving filling and reducing load were determined.For the small mandrel distributary in the form of movable container,and the blank size is of 38 mm(diameter),16 mm(aperture),27.3 mm(height) and lugs distributary in the form of fixed container,and the blank size is of 38 mm(diameter),18 mm(aperture),25.5 mm(height).From the curve of load and stroke in the movable container of small mandrel distributary,the experiment results are commendably in accordance with the simulated results.
|
|
基金项目：
|
|
江西省教育厅科学技术研究资助项目(DB200701053)
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]刘玉忠,鲁素玲,王丽娟.直齿圆柱齿轮精锻工艺研究的现状[J].河北工业科技,2005,(4):245-248.
[2]陈丰,陈次昌.直齿圆柱齿轮冷精锻成形的实验研究[J].锻压技术,2007,32(2):60-62.
[3]Ohga K,Kondo K.Research on precision die forging utilizingdivided flow(1streport,theoretical analysis of processes uti-lizing flow relief-axis and relief-hole)[J].Bulletin of theJSME,1982,(25):1828-1835.
[4]江雄心,万平荣,扶名福,等.齿轮精锻的数值模拟和试验研究[J].塑性工程学报,2002,9(1):62-65.
[5]许锋,薛克敏,李萍,等.基于均衡思想高凸台圆柱直齿轮冷锻成形[J].锻压技术,2009,34(5):16-18.
[6]李建国,汤文成,刘德仿,等.内齿轮冷挤压精锻成形数值模拟与工艺研究[J].锻压技术,2008,33(3):75-78.
[7]吕炎.锻压成形理论与工艺[M].北京:机械工业出版社,1991.
[8]王清瑞.模具结构对高凸台直齿轮精锻成形影响研究[D].合肥:合肥工业大学,2007.
|
|
服务与反馈：
|
|
【本网站尚未开通全文下载服务】【加入收藏】
|
|
|
|
