When cutting parts on a CNC lathe or turning machining center, the position of the cutter on the turret should be reasonably and scientifically arranged according to the structure of the tool rest and the number of tools that can be installed. Attention should be paid to avoid the interference between the tool and the machine tool, between the tool and the workpiece, and between the cutter when the tool is still or working. So what is the composition of CNC lathe? Let's have a look.

　　1、 Host, it is the main body of CNC machine tool, including machine body, column, spindle, feed mechanism and other mechanical components. It is a mechanical part used to complete various cutting processes.

　　2、 CNC device is the core of CNC machine tool, including hardware (printed circuit board, CRT display, key box, paper tape reader, etc.) and corresponding software, which is used to input digital part program, complete input information storage, data transformation, interpolation calculation and realize various control functions.

　　3、 Drive device, which is the driving part of the executive mechanism of CNC machine tool, including spindle drive unit, feed unit, spindle motor and feed motor, etc. Under the control of the numerical control device, he realizes the spindle and feed drive through the electric or electro-hydraulic servo system. When several feed linkage, positioning, straight line, plane curve and space curve processing can be completed.

　　4、 Auxiliary device, some necessary matching parts of index control machine tool, to ensure the operation of CNC machine tool, such as cooling, chip removal, lubrication, lighting, monitoring, etc. It includes hydraulic and pneumatic devices, chip removal device, exchange table, CNC turntable and CNC dividing head, as well as cutting tools and monitoring and detecting devices.