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游标量具(包括游标卡尺,深度游标卡尺,高度游标卡尺,齿厚游标卡尺和万能角度尺等)在使用过程中,往往容易丢掉紧固螺钉。为了防止出现这种情况,采用下述措施,问题就很好地解决了。具体就是把原来的紧固螺钉的螺纹端面用钻头加工成盲孔,盲孔的直径和深度根据紧固螺钉的不同外径有所不同。加工盲孔时,可采用如下图所示的钻模进行钻孔。钻孔前、要把钻模拧在紧固螺钉上,并需拧紧。此时,用三爪自动定心卡盘将其紧固螺钉的螺帽夹紧,然后在车床上或钻床上进行加工。随后把游标量具的游框、微动游框从主尺上取下,拿出弹簧,再将游框、微动游框装在主尺上。这时,在游框、微动游框的螺孔内放入钢球,再旋入加工后的紧固螺钉,用力拧紧。这样紧固螺钉的盲孔和钢球互相接触,钢球又和主尺基面相对的另一面互相接触。此时,用铜质的小锤敲击紧固螺钉的螺帽。盲孔在外力
Vernier cursors (including vernier caliper, depth vernier caliper, vernier caliper, vernier caliper and omnipotent angle gauge, etc.) are often easily discarded in the course of use. In order to prevent this from happening, the following measures are taken to solve the problem very well. The specific is the original fastening screw thread end face with a blind hole into the blind hole, the diameter and depth of the blind hole according to the different outer diameter of the fastening screw is different. When machining blind holes, drill holes can be drilled as shown in the figure below. Before drilling, the drill should be screwed on the fastening screw and tightened. At this point, with a three-jaw self-centering chuck clamping screw nut clamp, and then on the lathe or drilling machine for processing. Then move the cursor measuring frame, fretting frame removed from the main ruler, took out the spring, and then tour frame, fretting frame mounted on the main ruler. At this time, in the tour box, micro-travel box screw into the ball, and then screw into the processing of fastening screws, forced tighten. The blind hole of the fastening screw and the steel ball are in contact with each other, and the steel ball is in contact with the other surface of the main scale opposite to the base surface. At this point, tap the nut of the tightening screw with a small copper hammer. Blind hole in external force