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杠杆百(千)分表的球形测头在使用中很容易磨损而失掉原有形状。球形测头磨损后就影响示值误差。所以配换球形测头是杆杠表修理中经常碰到的修理项目。测头磨损后,若全部调换测头杆杠不但费工费料,还不易制造准确。我厂采用锡焊钻孔的钢球方法修复球形测头,经多年的实践证明,只要采用合理的配制、修理工艺,焊接强度及修复精度完全可以满足杠杆表使用的要求。且测头杠杆经过改装后便于多次修复。钻孔钢球制备一批备用,以后修理时只要换焊钢球就行。此法操作简便、工效高、修理质量好。现将具体的修理工艺介绍如下。(1)将已磨损的球形测头去掉,把杠杆部分修成如图(1)所示的形状。
Lever one hundred (thousands) sub-table spherical probe in use is easy to wear and lose the original shape. Ball-shaped probe wear impact on the indication error. So replace the spherical probe is often encountered in the maintenance of the bar table repair items. After the probe wear, if all the probe rod is not only the expense of exchanging materials, it is not easy to create accurate. Our factory uses the ball method of soldering and drilling to repair the spherical probe. After many years of practice, as long as reasonable preparation, repair process, welding strength and repair accuracy can fully meet the requirements of the use of the lever table. And the probe lever is modified to facilitate multiple repairs. Prepared a number of drilling steel ball spare, after repair as long as the welding steel ball on the line. This method is simple, high efficiency, good repair quality. Now the specific repair process are as follows. (1) Remove the worn ball probe and set the lever section to the shape shown in Figure (1).