CNC, 3D printing, sheet metal and other processes, professional production of a variety of metal, plastic hand model.



What is CNC machining-cnc machining parts service

Oct 10,20

What is CNC machining-cnc machining parts service

CNC also known as computer gongs, CNCCH or nc machine tool is actually Hong Kong there's a term, then was introduced into China, the pearl river delta is CNC milling machine, and in jiangsu area to be called "CNC machining center, CNC processing usually refers to the precision machining, CNC lathe, CNC milling machine, CNC machining, boring and milling machine, etc., is a new kind of processing technology of mechanical processing, main job is processing program, the original manual work to computer programming.Of course, there is also a need for manual processing experience.

1brief introduction

CNC milling machine (or "CNC machining center") is an automated machine tool equipped with a programmed control system.Numerical Control machine tool, abbreviated as Computer Numerical Control, is an automatic machine tool controlled by a program.The control system can logically process a program with control codes or other symbolic instructions, which can be decoded by a computer so that the machine can move and process parts.The blank material is processed into semi-finished product parts by cutting tools.

  CNC Machining (CNC Machining) refers to Machining with CNC Machining tools.CNC exponentially controlled machine tools are programmed and controlled by CNC machining language, usually G code.Nc machining G code language tells nc machine tool which cartesian position coordinates to use, and control the tool feed speed and spindle speed, as well as the tool converter, coolant and other functions.Numerical control machining has great advantages over manual machining. For example, the parts produced by numerical control machining are very accurate and repeatable.CNC machining can produce parts with complex shapes that cannot be processed manually.CNC machining technology is now widely used, most machining workshops have CNC machining capability, the most common CNC machining methods in the typical machining workshop are CNC milling, CNC turning and CNC EDM wire cutting (EDM wire cutting).The tool for CNC milling is called a CNC milling machine or CNC machining center.A lathe that performs numerical control turning is called a NUMERICAL control turning center.Nc Machining G codes can be programmed manually, but usually machining workshops use CAM(computer-aided manufacturing) software to automatically read CAD(computer-aided design) files and generate G code programs to control cnc machine tools.

2.Confirm CNC processing route

CNC lathe feed processing route refers to the turning tool from the starting point (or the fixed origin of the machine tool) movement, until the return to the point and the end of the processing program after the path, including the cutting path and cutting tool into, cut out and other non-cutting empty travel path.

The feed route of finishing is basically carried out along the outline sequence of its parts. Therefore, the key point of determining the feed route is to determine the feed route of rough machining and empty travel.

In CNC lathe processing, the determination of the processing route should generally follow the principles of the following aspects.

(1) should be able to ensure the accuracy and surface roughness of the processed workpiece.

(2) make the processing route shortest, reduce the empty travel time, improve the processing efficiency.

(3) try to simplify the numerical calculation of the workload, simplify the processing program.

(4) for some repeated use of the program, should use subroutines.

3.Advantages and disadvantages of CNC machining

CNC machining has the following advantages:

(1) reduce the number of tooling, machining complex shape parts do not need complex tooling.If you want to change the shape and size of the part, you only need to modify the part processing procedure, suitable for new product development and modification.

(2) stable processing quality, high processing precision, high repeatability, adapt to the aircraft processing requirements.

(3)Multiple varieties, small batch production under the circumstances of higher production efficiency, can reduce the production preparation, machine tool adjustment and process inspection time, and because of the use of the best cutting quantity and reduce the cutting time.

(4) can be processed by conventional methods difficult to process complex surface, and even can be processed some can not observe the processing parts.

The disadvantage of CNC machining is the high cost of machine tools, which requires a high level of maintenance personnel.