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CNC machining,What is the CNC machining?

The concept of CNC (Computer numerical control) abbreviation
CNC also called computer gongs or CNC machine tools is actually a name for the Hong Kong side, it was brought to the mainland PRD, in fact, CNC milling machine, in Jiangsu and Zhejiang provinces was called "processing center", is equipped with a process control system automated machine tools. The control system can logically handler has the control codes or other symbols Directive, and decoding, so that the machine operation and machining parts.
CNC machining (CNC Machining)
CNC machining is the machining with CNC machining tool carried. CNC index controlled by the NC machine tool programming language control, usually G code. What Cartesian position coordinates NC G-code language to tell CNC machine tools tool use, and control the tool feed rate and spindle speed, and tool-changer, coolants function. NC relatively manual process has great advantages, such as CNC machining parts produced very accurate and repeatable; CNC machining parts with complex shapes can be produced manually process can not be completed. CNC machining technology has been popularized, most machine shops have CNC machining capability, a typical machine shop, the most common way of CNC machining CNC milling, CNC lathe and CNC EDM wire cutting (EDM wire cutting). CNC milling tool called CNC milling or CNC machining centers. CNC turning lathes CNC lathe center is called. CNC machining G codes can be programmed manually, but usually the machine shop with CAM (computer aided manufacturing) software automatically reads the CAD (computer aided design) files and generate a G code program CNC machine control. Technologically advanced CNC machine tool brands Hass, DMG (Deckel Maho Gildemeister), Mazak, Mori Seiki, Fadal and Wasino.
cnc machining history
What is the CNC machining? The first machining center in 1958 by the United States Carney - Terex company first successfully developed. It adds automatic tool changer CNC horizontal boring and milling machine, based on enabling a workpiece clamping can be carried out after milling, drilling, boring, reaming and tapping centralized processing and other processes.

Since the 1970s, the rapid development of machining centers, there have been interchangeable headstock CNC machining center, it can be automatically replaced with a plurality of multi-axis spindle box equipped, and can be porous workpiece machining at the same time.

This multi-step process concentrated form is also extended to other types of CNC machine tools, such as turning centers, CNC lathe it is configured with multiple automatic tool changer can be controlled more than three coordinates, in addition to turning, the spindle can be stopped or indexing, and by the rotary milling, drilling, reaming and tapping processes, suitable for processing complex rotating body parts.

CNC machining center spindle arrangement divided by vertical and horizontal categories. Horizontal machining centers generally have a turntable or CNC turret indexing, each side can be processed workpiece; also can be used for multiple coordinate joint motion for machining complex spatial surfaces. Vertical machining centers generally do not take the turntable, as only the top surface machining. In addition, with the stand, lie two spindles composite machining center, the spindle can be adjusted into a horizontal or vertical axis of the adjustable vertical and horizontal machining centers, they can be processed on five sides of the workpiece.

Automatic tool changer CNC machining centers from storage magazine and ATC agencies. Many magazine species, are common types of disk and chain. Chain knife stock put larger capacity.

ATC between the machine spindle and magazine exchange, common mechanical hand; there are not a robot but by a spindle with a direct exchange with the magazine, said non-arm tool changer.

In order to further reduce non-cutting time, and some CNC machining center is equipped with two automatic exchange of pallet workpiece. A table containing workpiece machining, and the other at the table outside the loading and unloading of the workpiece. After the automatic exchange of pallets machine complete the processing cycle, making loading and unloading of the workpiece and the cutting time coincide. CNC machining, CNC machining what is?
Features CNC machining
Compared with the general machine tools, CNC machine tools has the following characteristics:
1. High precision, stable machining quality;
2. available for multi-axis linkage, can process complex shape parts;
3. When processing parts change, generally only need to change the NC program can save production preparation time;
4. High precision machine itself, rigidity, choose the amount of favorable processing, production rate (usually 3 to 5 times that of ordinary machine tools);
5. The high degree of automation tools, can reduce labor intensity;
6. mass production, product quality is easy to control;
7. lower quality requirements of the operator, the maintenance personnel of higher technical requirements.
8. The processing center, equipped with ten to tens to put different tools, it disposable turning, milling, drilling, reaming and many other cutting.
cnc lathe Category

First, according to the lathe spindle position classification
1, vertical cnc lathe
Vertical cnc lathe cnc vertical lathe for short, which is perpendicular to the lathe spindle water


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