CHIP PARTING TOOL FOR TAPPING, AND FEMALE SCREW CUTTING METHOD

摘要

Chip on the inner circumferential surface of the avalanche by press fitting the blade portion 14 of the breaking tool in the avalanche hole 22 has a plurality of grooving blades in cross section, a triangle 16, hole 22-tab prior to the processing, chip- Although the braking groove workpiece 20 is jeonyeonseong high material and then cutting, chips are chips generated during tapping - and quite satisfactorily discharged is divided by the breaking groove, and thus the chip is long, continuous tangled or the cutting tap chip is sandwiched can be prevented from being damaged, the cutting tap, and it can also be easily performed, such as the chip removing processing.