Carbide Tips and Tools Machinery's Handbook, 31st Edition
859
Table 1. Insert Radius Compensation ANSI B212.3-2002 (R2011) 55 ° Profile Table 1. (Continued) Insert Radius Compensation ANSI B212.3-2002 (R2011)
Profiling 3 ° Reverse Lead Angle
C
Rad.
L -1
L -2
D -1
D -2
F
.0135 .0292 .0015 .0172 .0271 .0583 .0031 .0343 .0406 .0875 .0046 .0519 .0541 .1166 .0062 .0687
1 ⁄ 1 ⁄ 3 ⁄ 1 ⁄
D-2
64 32 64
J Style a
L-2
3°
D-1
L-1
16
35 ° Profile
Profiling 3 ° Reverse Lead Angle
C
Rad.
L -1
L -2
D -1
D -2
J Style a Negative rake holders have 6 ° back rake and 6 ° side rake
F
.0330 .0487 .0026 .0182 .0661 .0973 .0051 .0364 .0991 .1460 .0077 .0546 .1322 .1947 .0103 .0728
1 ⁄ 1 ⁄ 3 ⁄ 1 ⁄
64 32 64
D-1
3°
L-1 L-2
D-2
16
Profiling 5 ° Lead Angle
C
L -2
D -1
D -2
Rad.
L -1
F
D-2
.0324 .0480 .0042 .0198 .0648 .0360 .0086 .0398 .0971 .1440 .0128 .0597
D-1
1 ⁄ 1 ⁄ 3 ⁄ 1 ⁄
64 32 64 16
L Style a
+
5°
L-1
L-2
.1205 .1920 .0170 .0795 a L -1 and D -1 over sharp point to nose radius; and L -2 and D -2 over sharp point to center of nose radius. The D -1 dimension for the B, E, D, M, P, S, T, and V style tools are over the sharp point of insert to a sharp point at the intersection of a line on the lead angle on the cutting edge of the insert and the C dimension. The L -1 dimensions on K style tools are over the sharp point of insert to sharp point intersection of lead angle and F dimensions. All dimensions are in inches. Table 2. Threading Tool Insert Radius Compensation for NC Programming Threading Insert Size T R U Y X Z 2 5 ⁄ 32 Wide .040 .075 .040 .024 .140 3 3 ⁄ 16 Wide .046 .098 .054 .031 .183 4 1 ⁄ 4 Wide .053 .128 .054 .049 .239 5 3 ⁄ 8 Wide .099 .190 … … …
29° Acme
Buttress Threading
60° V-Threading
3°
U
Y
Z
X NTB-A
T
R
NTB-B
NA
NT
NTF
All dimensions are given in inches. Courtesy of Kennametal, Inc.
Copyright 2020, Industrial Press, Inc.
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