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由于使用不当,麻花钻锥柄拉毛碰伤现象在车间较为常见,特别是一些大规格钻头因拉毛而影响加工质量。我们试制了一种修磨钻柄碰伤的夹具,能修磨φ34～φ48的麻花钻,效果较好。该夹具结构简单(附图),使用时,夹具的锥柄放入磨床头架孔内装紧,再将麻花钻放人夹具中。用尾架顶尖顶住锥柄中,花钻放入夹具中。用尾架顶尖顶住锥柄中心孔,锥栖外圆用百分表找正。调整四
Due to improper use, twist taper shank ram bruise phenomenon is more common in the workshop, in particular, some large-scale drill bit due to hair and affect the processing quality. We trial a fixture sharpening drill shank, can repair φ34 ~ φ48 twist drill, the effect is better. The structure of the fixture is simple (with photos), when used, the taper shank of the fixture is placed in the grinder headstock hole and tightened, and then the twist drill is released into the fixture. Tail with the top of the tail cone to withstand the drill into the fixture. Tail with the top of the cone to withstand the center hole, taper cylindrical habitat with a dial to find positive. Adjust four