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我厂使用的苏联5714型剃齿机床,手摇工作台升降十分沉重,我们把原来的普通滑动螺母改为滚轮式螺母,解决了螺母转动沉重问题,使用效果很好。滚轮式螺母结构如图所示:它由3个相隔120°有环形槽的滚轮1组成螺母,每个滚轮经滚动轴承装在上下壳体上,壳体再通过螺钉固定在机床底座上。丝杠仍采用原机床的梯形丝杠,在滚轮的轴向截面上是相应的梯形环槽。滚轮中径牙厚与丝杆中径牙槽
The Soviet Union 5714 shaving machine used by our factory has a very heavy lifting of the hand-operated workbench. We changed the original ordinary sliding nut into a roller nut to solve the problem of heavy rotation of the nut and the use effect is very good. Roller nut structure shown in the figure: It consists of three separated by 120 ° annular groove of the roller 1 composed of nuts, each roller mounted on the upper and lower housing by the bearing, the housing and then by screws fixed to the machine base. The lead screw still adopts the trapezoidal lead screw of the original machine tool, which is the corresponding trapezoidal ring groove on the axial section of the roller. Wheel diameter caliber and screw diameter caliper