锻压技术

基于响应面汽车变速器螺旋伞齿轮精锻成形工艺优化

英文标题：Process optimization of precision forging for auto transmission spiral bevel gears based on response surface

作者：赵海宾

单位：河北交通职业技术学院

分类号：

出版年,卷(期):页码：2016,41(4):10-13

摘要：

针对螺旋伞齿在精锻时齿形成形质量差、成形载荷过大等缺陷，以某汽车变速器螺旋伞齿轮为研究对象，建立了以坯料始锻温度、摩擦系数以及压力机速度为设计变量，以最大成形载荷和终锻填充率为目标函数的二次多项式响应面模型，结合数值模拟方法以及Matlab优化工具箱，得到了优化的成形工艺参数为：坯料初始温度1000 ℃、摩擦系数0.3和摩擦压力机的成形速度200 mm·s-1。最后基于优化后的工艺参数，通过工艺试验验证了该模型的有效性，试验获得的螺旋伞齿齿形饱满，设备成形载荷满足要求。

For the defects of poor forming quality and over load during precision forging of spiral bevel gear, the quadratic polynomial response surface model was built for the spiral bevel gear of an auto transmission, which took the initial forging temperature, friction coefficient and press speed as parameter variables, and the maximum forming load and filling ratio as optimization goals. Combining with numerical simulation and Matlab optimization toolbox，the optimized forming process parameters were obtained as follows: the initial temperature of the billet is 1000 ℃, the friction coefficient is 0.3 and friction press forming speed is 200 mm·s-1. Finally, the feasibility of the model was verified by the process test, and the obtained spiral bevel gear tooth filled well with the equipment forming load meeting the requirements better.

基金项目：

2014年度石家庄市高等专科自然科学科研重点资助项目(ZR-201405)

赵海宾（1978-），男，硕士，讲师

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