1)  the radius of cutter cirque

1.
The CNC lathe tool compensation includes tool position compensation and tool radius compensation.

2.
The application of the tool radius compensation in the different CNC systems was introduced.

3)  tool arc

1.
In the article,it is proceeded the analysis from the mathematical angle that tool arc produces the influence to NC lathe turning, and the concrete solution is put forward.

4)  Rounded corner

5)  Tool Nose

6)  knife point circular arc radius

1.
Influence of knife point circular arc radius to circular cone parts processing precision;

h=re-(re²；-(0.5×f)²；)0.5

h为残留高度，而：

Ra=(0.25~0.33)h

fmax=(Ra×re/50)½；

 刀尖圆角mm 圆刀片mm Ra/Rz µ；m 0.4/1.6 1.6/6.3 3.2/12.5 6.3/25 8/32 32/100 进给量 mm 0.2 0.05 0.08 0.13 0.4 0.07 0.11 0.17 0.22 0.8 0.10 0.15 0.24 0.30 0.38 1.2 0.19 0.29 0.37 0.47 1.6 0.34 0.43 0.54 1.08 2.4 0.42 0.53 0.66 1.32 6 0.20 0.31 0.49 0.62 8 0.30 0.36 0.56 0.72 10 0.25 0.40 0.63 0.80 1.00 12 0.44 0.69 0.88 1.10 16 0.51 0.80 1.01 1.26 2.54 20 0.89 1.13 1.42 2.94 25 1.26 1.58 3.33