Каталог Iscar державки и пластины для нарезания резьбы 2022 - страница 89

THREADING USER GUIDE Mini-Tool Features Infeed Methods for Threading Operations (1) øD M8; 5/16”-UN; 1/16”-NPT(2)4H÷8H/1B÷3B Flank Infeed Radial Infeed AlternatingFlanks Infeed (3) A 0.00 1 2 3 4 5 A Flank Equal (1) Smallest possible thread Equal depth of cut for each pass (2) All tolerances (3) Minimum runout D1/2 (4) High surface quality D2/2 Flank Clearance and Effective Inclination Angle H/2 D3/2 Inclination angle β of the cutting edges correspondsto a specific thread helix angle l and ensures an Dn/2D/2 equal clearance angle on both sides of the insert. U/2 αl=αr 4 Incorrectαl<αr 8 D12= D22= D32 = Dn2 λ λ Diminished depth of cut for each pass Flank Diminishing Modified Flank Infeed β β=0 1-3° D1/2 D2/2 αL αR αL αR D3/2Dn/2Dn+1/2 D/2 α - Flank clearance angle H - Depth of thread profile (on ø) U/2 λ - Helix angle D - Depth of pass (on ø)β - Effective inclination angleU - Depth of finishing pass (on ø)D12> D22> D32> Dn2> Dn+1 2 is achieved by selecting the suitable anvil 723