Question

(com)what “C” denotes in CNMG120408 of ISO standard specification tool inserts? * 1 Shape 2 Rows 3 Grade 4 DMaterial

Answer 1

“C” denotes Shape in CNMG120408 of ISO standard specification tool inserts.

Extra Information:

This is General Turning Insert Nomenclature for CNC Dummies .

There are variety of shapes and sizes of General turning inserts.

The nomenclature of turning inserts consist of numbers and letters.

Every tuning insert has a unique nomenclature.

For example => CNMG 120408

This is divided into seven parts which are:-

1. Turning Insert Shape  i.e. shown by letter C

C => C Shape Turning Insert

D => D Shape Turning Insert etc.

2. Turning Insert Clearance Angle  i.e. shown by letter N

B => Turning Insert with 5° clearance angle

C => Turning Insert with 7° clearance angle

E => Turning Insert with 20° clearance angle etc.

3. Turning Insert Tolerances  i.e. shown by letter M

4. Turning Insert Type  i.e. shown by letter G

A => Turning insert with Cylindrical hole

G => Turning insert with Cylindrical hole and Double-Sided Chipbreaker

M => Turning insert with Cylindrical hole and Single-Sided Chipbreaker etc.

5. Turning Insert Size  i.e. shown by number 12

6. Turning Insert Thickness  i.e. shown by number 04

7. Turning Insert Nose Radius  i.e. shown by number 08

08 means 0.8 radius value etc.