基于铆点试验的转向机调整螺母铆点方法研究  

Research on Riveting Point Method of Automobile Steering Gear Adjusting Nut Based on Riveting Point Test

作　　者：王国超 Wang Guochao(Bosch Huayu Steering Systems Co.,Ltd.,Shanghai 201821)

机构地区：[1]博世华域转向系统有限公司,上海201821

出　　处：《汽车工艺与材料》2023年第7期31-36,共6页Automobile Technology & Material

摘　　要：针对汽车齿轮齿条式转向机调整螺母的防松方式进行阐述,对采用铆头对调整螺母螺纹破坏式的铆点方法进行了研究。以铆头数量、铆头分布方式、铆压力大小为控制变量,以铆压后调整螺母的拧松力矩和转向机壳体压块孔变形量为评价指标。通过试验得出,采用6个铆头周向均匀分布在调整螺母螺纹中径圆上对转向机调整螺母铆压时,对壳体压块孔变形量影响较小,对调整螺母防松力矩影响也较小。最终得到了采用6个铆头周向均匀分布在调整螺母螺纹中径圆上,使用30kN铆压力为较优的调整螺母铆点方法。This paper elaborated the anti-loosening method of adjusting nuts for automotive rack and pinion steering gears,and studied the riveting point method using riveting head to damage the threads of adjusting nuts.In this paper,the number of riveting head,the distribution of riveting head,and the riveting pressure were used as control variables,and the loosening torque of the adjusting nut after riveting,the deformation of the pressure block hole of the steering gear housing were utilized as evaluation indicators.According to the test,when 6 riveting heads are evenly distributed on the pitch diameter circle of the adjusting nut thread circumferentially to rivet the steering gear nut,the deformation of the pressure block hole of the housing is less affected,and the locking torque of the adjusting nut is also less affected.Finally,the method of adjusting nut riveting point for steering gear is obtained,in which 6 rivet heads are uniformly distributed on the pitch diameter circle of the adjusting nut thread along the circumferential direction,with riveting pressure of 30 kN riveting pressure as optimal.

关 键 词：齿轮齿条式转向机 调整螺母 壳体压块孔变形量 拧松力矩 

分 类 号：U463.46[机械工程—车辆工程] U467.3[交通运输工程—载运工具运用工程]