Page 1028 - Tungaloy Catalog

T
Technical Referenceechnical Reference
Milling T
Milling Toolsools
Nomenclature for face milling cutter
Nomenclature for face milling cutter

Peripheral cutting edge Axial rake angle (γp) (“A.R.” on catalogue.)
(Main cutting edge)
Inserts Chamfering
corner

Work piece
Cutting edge inclination (λ)
Face cutting edge Face relief
Cutter height (Wiping flat) angle

Peripheral
cutting
edge angle
(κ)

Mounting hole dia. (ød) True rake Peripheral
Effective cutter dia. (øDc) Radial rake angle (γf) (“R.R.” on catalogue.)
relief angle
angle (γ0)

• Relations of various rake angles are
according to the following equations.
tan γ 0 = tan γ f cos κ + tan γ p sin κ
tan λ = tan γ p cos κ - tan γ f sin κ

Cutter geometry and applications

Rake angle combination and applicability Rake angle combination
Negative-Negative Negative-Positive Positive-Positive
Shapes γp (A.R) - + + (-) Axial rake angle (+) Axial rake angle (+) Axial rake angle
of cutting γf (R.R) - + +
-
Technical Reference Carbon steels, n s s (-) Radial rake angle (-) Radial rake angle (+) Radial rake angle
edge
-
+
γo
s
s
Alloy steels ( 300HB)
×
Stainless steels ( 300HB)
s
s
s
Die steels ( 300HB)
s
n
s
s
Cast irons Ductile cast irons
s
×
s
s
s
Work
Negative type
Positive type
×
material Aluminum alloys s s s (Negative-Negative) Negative-Positive type (Positive-Positive)
Copper and its alloys
s
s
s
Titanium and its alloys × s s
14 Hardened steels s s ×
(40 ~ 55HRC)
· Higher · Excellent chip · Most
cutting edge removal excellent
strength · Higher cutting cutting action
Features · Many usable edge strength
corners of and freer
inserts cutting action
TGN4200 TAW13 THF4000
Typical examples of TAC mills TME4400 THE4000
TMD4400
14–10