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What is the CNC machining? What is the numerical control technology

Article source:China Hardware processing netwResponsible editor:adminauthor:Kangding HardwarePopularity: Publication time:2017-05-11 18:37 font size:【 large middle Small
 What is the CNC machining? What is the numerical control technology
CNC machining
CNC (CNC machine tools) is a computer numerically controlled machine tools (Computer numerical control) for short, is a program-controlled automation of machine tools. The control system can logically handler has the control codes or other symbols Directive, by computer to decode, so that the implementation of the provisions of the machine a good action, through the rough cutting tool materials processed into semi-finished products finished parts.
Features:
Compared with the general machine tools, CNC machine tools has the following characteristics:
● high precision, stable machining quality;
● available for multi-axis linkage, can process complex shape parts;
● When machining parts change, generally only need to change the NC program can save production preparation time;
● high precision machine itself, rigidity, choose the amount of favorable processing, production rate (usually 3 to 5 times that of ordinary machine tools);
● high degree of automation tools, can reduce labor intensity;
● mass production, product quality and easy to control;
● the operator of low quality requirements, technical requirements for maintenance personnel is high.
"CNC" English Computerized Numerical Control (computer numerical control) acronym.
What is the numerical control technology?
CNC technology, referred to as NC (Numerical Control). It is the use of digital information a method for controlling the movement of the machine tool and machining process. Implementation of process control machine tools with numerical control technology, or equipped with CNC system called NC (NC) machine tools.CNC system comprising: Some numerical control device, programmable controller, spindle drives and feed devices CNC machine tools are mechanical, electrical, hydraulic, gas, light highly integrated products. To achieve control of the machine, you need to use geometry to describe the relative motion between the tool and the workpiece, and use information to describe the machining process must have some process parameters. For example: feed rate, spindle speed, spindle rotating, ATC, switch coolant and the like.
This information form processing file by a certain format (ie normal said NC program) is stored on the information carrier (such as disks, punched tape, tape, etc.), then read (or directly from the CNC system on the machine tool numerical control system keyboard input, or input via the communication), through its coding, so that the machine movements and machining parts. Modern CNC machine tools are a typical mechatronics products, is a new generation of technology-based production technology, computer integrated manufacturing systems, etc. . The development trend of modern CNC machine tools are high-speed, high-accuracy, high reliability, multi-functional, complex, intelligent and open architecture. The main developments in the research and development of software and hardware with intelligent full-featured open architecture of common NC device. CNC machining automation technology is the basis, the core technology of CNC machine tools, and its relationship to the level of national strategic position and reflects the level of comprehensive national strength. It is with the development of information technology, microelectronics technology, automation technology and detection techniques and development of.
CNC machining center with a magazine and automatic tool change, the workpiece can be CNC machine tools, a variety of processing operations within a certain range. Features in the processing center processing components are: parts to be processed after a fixture, the CNC can control the machine to automatically select a different processes and replacement of the tool; automatically change the spindle speed, feed rate and the trajectory of the tool relative to the workpiece and other auxiliary functions, continuous machined surface of the workpiece for each automatic drilling, countersinking, reaming, boring, tapping, milling and other machining processes. Since the processing center can focus on and automatically complete a variety of processes, to avoid human operator error, reducing the workpiece clamping, to adjust the time and workpiece measurement and turnover machine, handling and storage time, greatly improving the processing efficiency and precision and therefore have a good economic returns. Press spindle machining center position in space can be divided into vertical machining centers and horizontal machining centers.