锻压技术

太阳轮内花键精密整形方法

英文标题：Precision shaping method for internal spline of sun gear

作者：冯文杰李栋周凤陈莹莹刘左发

单位：重庆理工大学

分类号：TG376

出版年,卷(期):页码：2020,45(6):86-92

摘要：

针对某载重汽车轮边减速器中的太阳轮冷挤压过程中内花键精度差的问题，提出了齿轮冷整形工艺方案，建立太阳轮冷整形工艺的有限元模型，并利用有限元软件Deform-3D进行数值模拟，得到了不同形式内花键坯料和外齿精整量对太阳轮内花键上、下端M值差值的影响规律。数值模拟结果显示：冷整形工艺中，选取合适工艺参数的内花键精度得到了提高。对太阳轮冷整形工艺进行工艺试验验证，试验结果表明：采用过盈式花键坯料和外齿精整量为0.2 mm的冷整形方式，可以有效减小内花键上、下端M值的差值，从而提高太阳轮内花键的精度，与模拟结果相吻合。该精密整形方法对类似零件的制造具有一定的参考价值。

For the problem of poor precision for internal spline of sun gear in a truck wheel reducer in the cold extrusion process, the technological scheme of cold shaping for gear was proposed, and the finite element model of cold shaping process for sun gear was established. Then, the forming process was simulated by finite element software Deform-3D, and the influence laws of different shapes of internal spline blanks and precision shaping amounts of external teeth on the difference between M values of the upper and lower ends for the internal spline of sun gear were obtained. The numerical simulation results show that the internal spline precision is improved by choosing the appropriate process parameters in the cold shaping process, and the cold shaping process of sun gear is verified by test. Furthermore, the test results show that the difference between M values of the upper and lower ends for the internal spline effectively reduces by taking the interference spline blanks and the precision shaping amount of 0.2 mm for externd teeth to improve the precision of the internal spline for sun gear, which is consistent with the simulation results. Thus, the precision shaping method has certain reference value for the manufacture of similar parts.

基金项目：

重庆市科委资助项目(cstc2014yykfA60001)；重庆市教委科学技术研究资助项目(KJ1400944)

冯文杰(1964－)，男，硕士，教授 E-mail：wjfeng@cqut.edu.cn 通讯作者：周凤（1994-），女，硕士研究生 E-mail：1129471156@qq.com

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