精密导电滑环表面微槽车削性能

采用超精密车削精密导电滑环导电环的方法,保证了精密导电滑环绝缘环与导电环的同轴度、环间距,使绝缘微槽变形量低于0.10 mm。建立了精密导电滑环的切槽模型,利用仿真分析讨论了主轴转速、进给速率、刀具前角和切削深度对微槽变形量的影响,并对模型进行了试验验证。结果表明:滑环微槽侧面变形量随主轴转速的增大而变大,当转速达到700 r/min时,变形量达到了0.10 mm,超出了滑环的精度要求;滑环微槽变形量随机床进给速率的增大而变大,当进给速率达到1.5 mm/min时,变形量超出了滑环的精度要求;滑环微槽变形量随着前角的增大而减小;滑环微槽变形量随切削深度的增大而变大,切削深度低于0.2 mm时,滑环变形量微乎其微。

Processing Performance of Micro-Groove on Surface of Precision Conductive Slip Ring

A method of ultra-precision cutting was used to ensure the concentricity,the spacing between the conductive ring and make sure the deformation of the insulated micro-groove less than 0. 10 mm. A grooving model of precision conductive slip ring was established to simulate and analyze the impact of spindle speed, feed rate, rake angle and depth of cut on the micro groove deformation, and the model was verified by experiments. The results showed that: the deformation of the slip ring increased with the rise of spindle speed, when the speed reached 700 r/ min, the deformation reached 0. 10 mm, which was out of the accuracy requirements; the deformation of the slip ring increased with the rise of feed rate, when the feed rate reached 1. 5 mm/ min, the deformation was out of the accuracy requirements; the deformation of the slip ring decreased with the rise of feed rate; the deformation of the slip ring increased with the rise of the depth of cut. , when the cutting depth was less than 0. 2 mm, the deformation became very little.