Tech Tip: Understanding Milling Insert Nomenclature
(1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
(11) |
(12) |
(13) |
|
ANSI Inch
|
S |
E |
K |
R |
4 |
2 |
AF |
T |
N |
6 |
G |
D |
P |
- First station indicates shape of insert.
- Second station shows relief angle or rake angle of the insert.
- The third station provides a working gage for repeatability. It sets tolerance to the I.C. (inscribed circle) and creates a gage tolerance for the I.C. to the over-the-nose radius along with the thickness of the insert.
- Fourth station indicates geometry and clamping insert type. It designates with or without hole, shape and size of hole, chipbreaker form, and single- or double-sided insert.
- Fifth station indicates I.C. size of the insert.
- Sixth station designates insert thickness.
T = 1/16” inch increments - Seventh station designates corner configuration of the insert.
- Cutting edge form
F for sharp
E For Honed edge
T for T-Land
S for Honed T-Land - Designates N for neutral, R for right-handed, or L for left-handed insert.
- Designates facet width of insert.
2 - .0312”
3 - .0469”
4 - .0625”
6 - .0938” - Edge prep size
L – Light sharp or lightly honed or T-landed
G – General Medium hone and/or T-land
H – Heavy – large hone and/or T-land - Rake face angle
Angle on insert prior to installation.
N – 0 degree, A – 3 degree, B – 5 degree, C – 7 degree, P – 11 degree,
D- 15 degree, E – 20 degree, F - 25 degree, G – 30 degree. - Added Info
J – polished rake face
P – partial T-land
W- Wiper Insert