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

USER GUIDE


THREADING
Mini-Tool Features Infeed Methods for Threading Operations
(1)
øD M8; 5/16”-UN; 1/16”-NPT Alternating
Flank Infeed Radial Infeed
Flanks Infeed
(2)
4H÷8H/1B÷3B
(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
H/2 D3/2
Flank Clearance and Effective Inclination Angle
Dn/2
Inclination angle β of the cutting edges corresponds
D/2
to a specific thread helix angle l and ensures an
U/2
equal clearance angle on both sides of the insert.
αl=αr
λ
4 Incorrect
αl<αr
λ
8 D1 D2 D3 Dn
2 = 2 = 2 = 2
Diminished depth of cut for each pass
Flank Diminishing Modified Flank Infeed
β β=0 1-3°
D1/2
D2/2
D3/2
αR αR Dn/2
αL αL Dn+1/2
D/2
U/2
α - Flank clearance angle H - Depth of thread profile (on ø)
λ - Helix angle D - Depth of pass (on ø)
D1 D2 D3 Dn Dn+1
β - Effective inclination angle U - Depth of finishing pass (on ø) 2 > 2 > 2 > 2 > 2
is achieved by selecting
the suitable anvil


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