According to Mr Leong to be ball joint understand,

The composition of CNC machine tools:
A. CNC machine tools and CNC system
 
Is the meaning of the CNC computer numerical control.
 
1. CNC machine tool
 
1) metal cutting
 
Hole drilling, tapping, boring, milling, turning, thread cutting, cutting plane, contour machining, plane grinding, cylindrical grinding, grinding, etc.
 
2) wire electrode cutting machine.
 
Step 3) punch, blunt, stamping, metal molding, such as pipe bending machine.
 
4) industrial robots.
 
5) injection molding machine.
 
6) testing and measuring machine.
 
7) woodworking machinery.
 
8) special material processing machinery, such as stone, glass, radioactive mineral aggregate, etc.
 
9) special processing machinery
 
Laser processing machine, gas cutting machine, welding machine, drawing machine, printing machine, etc.
 
As the electronic technology and computer technology and the development of IT technology, at present, the machine tool and machining equipment is available numerical control computer using numerical data, referred to as CNC control.
 
2. The CNC system
 
The meaning of the CNC system is a computer numerical control system.
 
CNC machine tool control is integrated multidisciplinary integrated control technology.
 
A CNC system includes: 1) the CNC control unit (numerical control). 2) feed servo drive unit and servo motor. 3) the spindle and the spindle motor drive unit. 4) PMC controller (PLC). 5) machine tool of high-voltage electrical cabinet (including knife library) control signal input/output (I/O) modules. 6) the position of the machine tool measuring and feedback unit (usually included in the servo drive unit). 7) external shaft (mechanical) control unit. Such as: knife library, change table, up and down manipulator, such as the drive shaft. 8) information of input/output devices. Such as computer, disk drive, memory card, keyboard, and special equipment, such as information. 9) network. Such as Ethernet, HSSB (high speed data ChuanShuKou), such as RS - 232 - c port and local area network (LAN) processing field.
 
CNC unit (controller) hardware is actually a dedicated microcomputer. Is CNC production equipment manufacturing factory own design specifically for the core of the machine tool control.