圆柱蜗杆、蜗轮和蜗轮副的精度,按机标(JB)162-60《蜗杆传动公差》规定,由运动精度、工作平稳性精度、和接触精度三项指标评定。而接触精度较前两项精度更难控制,因为接触精度是蜗杆蜗轮副的综合精度。标准规定是在蜗轮副装配好的条件下,加轻微制动力,啮合运转后,以蜗轮齿形侧面上接触班点的多少,与有效工作齿长和齿高的百分比例来评定的。所以,要获得良好 Cylindrical worm, worm gear and worm gear accuracy, according to the standard (JB) 162-60 “worm drive tolerance” provisions, by the motion accuracy, work stability accuracy, and contact accuracy of the three indicators of assessment. The contact accuracy is more difficult to control than the first two, because the contact accuracy is the worm worm gear synthesis accuracy. The standard requirement is to add a slight braking force when the worm gear pair is assembled. After the meshing operation, the number of contact points on the tooth profile of the worm gear is calculated as a percentage of the effective working tooth length and tooth height. So, get good