Page 89 - TURNING CATALOG p635-848
P. 89
USER GUIDE THREADING
Mini-Tool Features Infeed Methods for Threading Operations
(1) øD M8; 5/16”-UN; 1/16”-NPT Flank Infeed Radial Infeed Alternating
(2) 4H÷8H/1B÷3B Flanks Infeed
(3) A 0.00
1
2
3
4
5
A
(1) Smallest possible thread Flank Equal
(2) All tolerances Equal depth of cut for each pass
(3) Minimum runout
(4) High surface quality D1/2
Flank Clearance and Effective Inclination Angle D2/2
H/2 D3/2
Inclination angle β of the cutting edges corresponds
to a specific thread helix angle l and ensures an Dn/2
equal clearance angle on both sides of the insert. D/2
U/2
αl=αr 4 Incorrect 8 D1 = D2 = D3 = Dn
αl<αr 2 2 2 2
λλ Diminished depth of cut for each pass
Flank Diminishing Modified Flank Infeed
β β=0 1-3°
αL αR αL αR D1/2
α - Flank clearance angle H - Depth of thread profile (on ø) D2/2
D3/2
Dn/2
Dn+1/2
D/2
U/2
λ - Helix angle D - Depth of pass (on ø) D21 > D22 > D23 > D2n > Dn2+1
β - Effective inclination angle U - Depth of finishing pass (on ø)
is achieved by selecting
the suitable anvil
723
