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直线度有几种形式
更新时间: 2020-10-05 00:00:00  

直线度公差指单一实际直线允许的变动全量。用于控制平面或空间直线的形状误差,其公差带根据不同的情况有几种不同的形式。

1、在给定平面内,公差带是距离为公差值t的两平行直线之间的区域。

2、在给定方向上距离为公差值t的两平行平面之间的区域。

3、在公差值前加注∅,则公差带是直径为t的圆柱内区域。

关键词: 直线 形式

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