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修复1级精度的宽座角尺,有的方法是先修A而(见图1)。由于A面与E面的垂直度不易检查,当修理后的A面与E面垂直度偏差较大时,90°侧角即C面与E面的垂直度就难以保证。为此,我们提出了先修C面的方法,其具体工序如下: 1.先修外观至合格。侧面E修至平直,短边与长边的胶合部位必须联接牢固,不得有脱胶或松动。 2.修研C面的平面度,同时使C面与E面保持垂直,并尽量控制C面与A面的平行度偏差,以减少A面的修磨量。 3.修研A面的平面度,并保证A面与C
A method of repairing a wide-angle square with an accuracy of 1 is first developed (see Figure 1). Because the verticality of the A surface and the E surface is not easy to check, when the vertical deviation of the repaired A surface and the E surface is large, the perpendicularity of the C angle of 90 degrees and the E surface can not be guaranteed. To this end, we propose to repair C surface method, the specific process is as follows: 1. Prerequisites to qualified. Side E repaired straight, short side and long side of the gluing site must be firmly connected, without degumming or loose. 2. Study the flatness of the C surface, while keeping the C surface and the E surface perpendicular to each other, and try to control the deviation of the parallelism of the C surface and the A surface to reduce the amount of shaving on the A surface. 3. Study flatness of surface A, and ensure that surface A and C.