Don't cut threads - FORM 'EM: In the right application, thread forming can boost quality and throughput

摘要

The vast majority of threaded holes-more than 90%, according to one supplier of taps and other cutting tools-are produced using cutting taps. But many of those threads could be produced using forming taps, which can provide multiple advantages. For ductile work materials, thread forming can provide better size control and stronger threads while improving tool life and productivity. Unlike thread cutting, no material is removed during thread forming. Rather, the process displaces the material to generate the thread form. Since the metal's structure is cold worked along the thread profile, the threads produced are generally stronger and have a smooth, burnished surface finish.