NC

							NC
Numerical control technology, referred to as NC (Numerical Control). It is the use of
several
Word of the information on the machine movement and processing of process control
methods. The implementation of process control technology with CNC machine tools,
or machines equipped with numerical control system known as NC (NC) machine
tools. Numerical control systems include: CNC equipment, programmable controllers,
spindle drives and some of the feed devices. CNC machine tool is a mechanical,
electrical, hydraulic, gas, light highly integrated products. To achieve the control of
machine tools, cutting tools need to describe the geometry and relative motion
between the workpiece and process information used to describe the machine tool
must have some process parameters. For example: feed rate, spindle speed, spindle
rotating, tool change, coolant switch. This information is processed by the formation
of a certain file format (that is normal that the NC machining program) stored in the
information carrier (such as disk, perforated paper, tape, etc.), then the CNC machine
tools read (or directly through the digital system keyboard input, or input through
communication), through its coding, so that movement and processing machine parts.
modern CNC machine tools is a typical mechatronic product, is a new generation of
manufacturing technology, computer integrated manufacturing systems, the technical
basis .
The development trend of modern CNC machine tools are high speed, high accuracy,
high reliability, multi- functional, complex, intelligent and open structure. Major
development trend is developed hardware and software has an intelligent open
architecture CNC full- featured general-purpose device. CNC machining automation
technology is based, is the core technology CNC machine tools, the level of its
strategic position in relation to the country and reflect the level of comprehensive
national strength. It as information technology, microelectronic technology,
automation technology and detection technology development development. CNC
machining center is a library with a knife and automatically changing tools, the
workpiece can be carried out within a certain variety of CNC machining operations.
Processing parts in machining center features: The processing of parts through a
single setup, the numerical control system can control the machine automatically
selected according to different processes and replace tool; automatically change the
spindle speed, feed rate and tool workpiece relative trajectory and other auxiliary
functions, and continued the process on the workpiece surface automatically drilling,
countersink holes, reaming, boring, tapping, milling, processing and many other
processes. As the processing center can focus on and automatically performs multiple
operations, to avoid human operator error, reducing the workpiece clamping,
measurement and Jichuang of adjustment time and the work piece flow, handling, and
storage time is greatly improved working efficiency and precision Therefore, good
value for money. Spindle machining centers by location in space can be divided into
vertical machining centers and horizontal machining center.