1. CNC machine tools and CNC systems
The meaning of CNC is computer numerical control.
1, CNC machine tools
(1), metal cutting
Hole machining, tapping, boring, milling, turning, thread cutting, cutting plane, contour machining, surface grinding, cylindrical grinding, internal grinding, etc.
(2), wire electrode cutting machine.
(3), punching machine, nibbling, stamping, metal forming, bending and other machine tools.
(4), industrial robots.
(5), injection molding machine.
(6), detection and measuring machine.
(7) Woodworking machinery.
(8) Special material processing machinery: such as processing stone, glass, and emissive mineral materials.
(9), special processing machinery
Laser processing machines, gas cutting machines, welding machines, drawing machines, printing machines, etc.
With the development of electronic technology and computer technology as well as IT technology, at present, these machine tools and processing equipment can be controlled by numerical computer numerical data, which is called CNC control.
2, CNC system
The meaning of the CNC system is the computer numerical control system.
The CNC control of the machine tool is an integrated multi-disciplinary control technology.
A CNC system includes: (1), CNC control unit (numerical controller part). (2) Servo drive unit and feed servo motor. (3), spindle drive unit and spindle motor. (4), PMC (PLC) controller. (5) Input/output (I/O) unit for control signal of machine tool power cabinet (including tool magazine). (6), the position measurement and feedback unit of the machine tool (usually included in the servo drive unit). (7) External shaft (mechanical) control unit. Such as: the drive shaft of the tool magazine, exchange workbench, loading and unloading robot. (8) Information input/output devices. Such as computers, disk drives, memory cards, keyboards, special information devices, etc. (9), network. Such as Ethernet, HSSB (high-speed data transmission port), RS-232C port and other processing local area network.
The hardware of the CNC unit (controller part) is actually a dedicated microcomputer. It is the core of the control of the machine tool designed and manufactured by the CNC equipment manufacturer. The following diagrams show the basic hardware modules; the basic control function modules and an actual controller hardware.
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