3)  knife point circular arc radius

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

1.
The corner radius has great influence to the precision of work pieces machined on a numerical control (NC) lathe.

2.
The influence of the corner radius on the spherical parts processing precision in the numerical control turning process is analyzed.

3.
This paper is mainly on how to remove inaccuracy by compensating the corner radius.

5)  radius of the cutter tip

1.
It analyzes the effects on the production quality caused by the factors including the types of the cutters, the radius of the cutter tip, the error of the cutter center elevation and so on, on the basis of which some corresponding measures were presented.

2.
The paper introduces the types of cutting tools used in NC producing and the way of selecting them,and analyzes the effects of some factors,such as the types of the cutters and the radius of the cutter tip,on the producing quality.

1.
In the process of CNC lathe machining,programming such as the ideal tool corner,in the parts of the cone and the arc of processing,often appear the processing error,it is mainly due to the existence of tool nose radius of a workpiece processing error.

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