数控车床进给加工路线指车刀从对刀点（或机床固定原点）开始运动起，直至返回该点并结束加工程序所经过的路径，包括切削加工的路径及刀具切入、切出等非切削空行程路径。

精加工的进给路线基本上都是沿其零件轮廓顺序进行的，因此，确定进给路线的工作重点是确定粗加工及空行程的进给路线。

在数控车床加工中，加工路线的确定一般要遵循以下几方面原则。

①应能保证被加工工件的精度和表面粗糙度。

②使加工路线比较短，减少空行程时间，提高加工效率。

③尽量简化数值计算的工作量，简化加工程序。

④对于某些重复使用的程序，应使用子程序。

The CNC lathe feed route refers to the path through which the tool starts from the point of the knife(or the fixed origin of the machine tool) until it returns to that point and ends the processing process. Including the cutting process path and cutting tool cut, cut out and other non-cutting blank path.
The refined feed route is basically carried out along the outline of its parts. Therefore, the focus of determining the feed route is to determine the feed route for rough processing and empty stroke.
In NC lathe processing, the determination of the processing route generally follows the following principles.
1 It should be able to guarantee the accuracy and surface roughness of the workpiece being processed.
Make the processing route the shortest, reduce the empty travel time and improve the processing efficiency.
3 Try to simplify the workload of numerical calculations and simplify the processing process.
For some reusable procedures, subroutines should be used.