722 Каталог ISCAR 2017 Вращающийся режущий инструмент и инструментальная оснастка Стр.718

Каталог ISCAR 2017 Ротационный инструмент Стр. 718 0722 ENG Lab2u

TAPS USER GUIDE Tap Nomenclature and Standards DIN 371 D Major diameter d2 Shank diameter d3 Chamfer diameter d4 Neck diameter ChamferLead Forms According to DIN 2197 6-8 threads 1-1.5 threads wv\aaVvWv\v DIN 376 Cf Ai L6 d4 j 'L " L J L Total length L1 Thread length L2 Shank length L3 Square length L4 Neck length L5 Chamfer length L6 Flute length S Square size Cm Center male Cf Center female Form A Long, 6-8 threads for short through holes. Form B Medium, 3.5-5 threads, with spiral point for all through holes and deep tapping holes. Form C Long, 2-3 threads for blind holes and generally for aluminum grey cast iron and brass. Form D Medium, 3.5-5 threads for through and blind holes with sufficient runout. Form E Extremely short, 1.5-2 threads for blind holes with little runout depth. Avoid use if possible. Form F Extremely short, 1-1.5 threads for blind holes with little runout depth. Avoid use if possible. Chamfer Lead Length for Sets of 3 Hand Taps ca. 6 threads ca. 4 threads ca. 2 threads vvWWWWSA. First taper tap vvVvVvVWvVV. Lv aa/v\AAVWV ” Second tap Ws/VvVVWvVvV UjvvvvwaaaV Bottoming tap 718 ISCAR