Общий каталог FANAR 2021 - страница 286

Ɣ1 D4 m ØD1 ØD3 Ɣ2 ØD2 K ØD4 Ɣ Technical information i 4. TAPS 4.1. Tap construction elements (on example of DIN-371) B C A A-A a L5 L2 L4 L3 L1 B C A r B-B C-C Ɣ S1 S2 ØD5 t m m α P x L1 - total length S1 - relief of chamfer L2 - thread length S2 - relief of thread L3 - useful length P - pitch of thread L4 - length of driving square - angle of thread L5 - chamfer length - rake angle a - size of square - spiral point angle D1- thread diameter - angle of spiral flutes D2- shank diameter - chamfer angle D3- neck diameter r - straight flute D4- (chamfer) point diameter x - spiral fluteD5 - web (core) diametert- spiral point12 m - width of land z - number of lands 283