摘要
提出了超声研磨螺旋锥齿轮的理论与方法,分析了超声研齿中磨粒锤击微切削、弹跳冲击与研磨液空化效应等材料去除机理。普通研齿与超声研齿对比试验证明,超声研齿材料去除率可达到普通研磨的3倍,且齿面质量明显提高,齿面表面粗糙度Ra达到0.2μm,轮廓支承长度率Rmr(c)=100%时的水平截距c为1.2μm。通过正交试验设计确定了超声研齿的最优工艺参数组合:小轮转矩为0.05N.m,转速为600r/min,研磨剂质量分数为20%;研磨剂质量分数利用材料去除率的影响最为显著,达到64.7%,其次为转速,贡献率为16.7%。对最优工艺参数进行了验证试验,证明材料去除率MR指标与预测值基本相符。
The method of ultrasonic lapping of spiral-bevel and hypoid gears were firstly presented. The material removal mechanism of ultrasonic lapping of the gears were investigated and specified as abrasives hammering to micro-cut, bouncing to impact and slurry cavitation. The experimental comparison between ultrasonic lapping and conventional one shows that the material removal rate of the ultrasonic lapping is three times that of the conventional one, and the ultrasonic lapping produces a better tooth surface quality, roughness Ra 0. 2μm, sectional height c=1.2μm for bearing length ratio of profile Rmr（c）=100%. Based on the orthogonal experimental design, the optimal combination of the ultrasonic lapping parameter levels for removal rate is determined as torque at pinion, 0.05Nm; pinion rotational speed, 600 r/min; slurry concentration, 20% by weight; the contribution by per centage of torque, speed and concentration are of 9.6, 16.7 and 64.7, respectively. Finally, a good agreement between the predicted and actual removal rate for the optimal lapping parameters is observed.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2006年第10期995-999,共5页
China Mechanical Engineering
基金
国家自然科学基金资助项目(50475060)
河南省自然科学基金资助项目(0410052300)
关键词
齿轮
超声研磨
去除率
正交试验
gear
ultrasonic lapping
removal rate
orthogonal experiments
