大尺寸游标高度尺(500～1500mm)大致可分三种:死游标式、活游标式和主尺标尺可调式,虽然类型不同,产生示值误差的原因及修理方法却大致相同。本文试分析各种因素对高度尺示值误差的影响及其修理。 1.高度尺的主尺基面与底座基面在四个方向不垂直高度尺由于长期使用,底座基面发生了磨损;高度尺的自重主要作用于底座的前端(即装夹主尺部位),因此底座基面前端比后端磨损快,使主尺与底座的基面垂直度发生变化,导致示值误差为正值。但往往操作者在使用高度尺时作用在底座上的力的方向不同,高度尺其它方向也会出现磨损,造成主尺偏斜某一方,产生一个倾斜角α。由图可知,α角愈小示值误差也愈大,高度尺测量范围愈大引起正 Large-scale cursor height gauge (500 ~ 1500mm) can be divided into three types: dead swimmer style, live swim standard and main ruler scale adjustable, although the type is different, the cause of indication error and repair methods are generally the same. This paper attempts to analyze the impact of various factors on the height of the error indication and repair. 1. The height of the main ruler base and the base surface of the base in the four directions are not vertical height gauge due to long-term use, base base surface wear; height ruler mainly acts on the base of the front end (that is, , So the front base base than the rear end wear fast, so that the main base and the base of the base perpendicularity changes, resulting in indication error is positive. But often the operator in the use of height rulers on the role of the base in different directions, the height ruler will wear in other directions, causing the main ruler on one side, resulting in a tilt angle α. It can be seen from the figure that the smaller the alpha angle is, the larger the indication error is and the larger the measuring range of the height gauge is