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轴键槽对称度的测量目前我国还没有专用量具,平时大家多采用国家标准GB1958—80规定的方法检测,这种方法费时费工,不适用于批量生产的检测。为此我们设计了一个专用量具,不但制造简单,使用方便快捷,测量精度也较高。 1.结构 如图所示,主要零件有母体板6,支表臂3和键块1等。支表臂3可根据被测轴件直径大小作上下左右运动,调到所需尺寸后定位,用螺钉4、5及滚花圆螺母固定。 2.使用方法 (1）先把所需键块1用固定螺钉2固定到母体板6上。这里需指出键块尺寸b应比键槽实际宽度小0.02～0.03mm。
Axis keyway symmetry measurement At present, China has no special measuring tools, usually we use the method of national standard GB1958-80 more testing, this method takes time and labor, not suitable for mass production testing. To this end, we have designed a special measuring tools, not only manufacturing simple, easy to use, high measurement accuracy. 1. Structure As shown, the main parts of the mother board 6, branch arm 3 and the key block 1 and so on. Support arm 3 can be measured according to the size of shaft diameter up and down about the movement, transferred to the desired size positioning, with a screw 4,5 and knurled round nut. 2. How to use (1) Fix the required key block 1 to the mother board 6 with the fixing screw 2 first. It should be noted here that the key block size b should be smaller than the actual width of the keyway 0.02 ~ 0.03mm.