滚柱偏心圆弧轴自紧式夹具

• 作 者: 李哲
• 出 处: 机械制造
• 发表日期: 1992年04期
• 关键词: 偏心圆 滚柱 工件定位 心轴 内花键 保持架 磨擦力 升弧 渐开线齿形 自动定心

我厂GHT1030件的内花键轴套,在加工中遇到须以渐开线齿形定心精车外径和磨端面的情况,原来采用的小锥度花键心轴,定位可靠性不太理想,故笔者设计了一付新式工装,简介如下,供同行们参考。 1.夹具原理该夹具主要由如图1所示的偏心圆弧轴、定位滚柱和滚柱保持架组成。利用加工时的车削力以及滚柱与工件和曲面心轴问的磨擦力,使滚柱沿心轴三个等升弧面向外张开,实现定位和夹紧。

I plant GHT1030 pieces of the internal spline sleeve, encountered in the process to be involute toothed centering fine outer diameter and grinding face, the original use of small taper spline mandrel, positioning reliability is not too Ideal, so I designed a pair of new tooling, profile below, for colleagues reference. 1. Fixture principle The fixture is mainly composed of an eccentric arc axis, a positioning roller and a roller cage as shown in FIG. 1. The use of machining turning force and the roller and the workpiece and the surface of the mandrel asked the friction, so that the roller along the mandrel of three equal arc-shaped opening outwards to achieve positioning and clamping.