Monday, June 10, 2019

What mean cnc machining?

cnc machining


Explanation of "CNC Machinining"


The usual interpretation of CNC machining refers to computer digital control precision machining, which is divided into lathing machining, CNC Milling Machining,Precision Turning etc.

Among them, CNC machining has the division of 3 axis machining, 4 axis machining,5 axis machining, and milling&turning combined machining etc.
5 axis cnc milling&turning combined machine

CNC Machining Route


The CNC lathe feed machining route refers to the path that the turning tool starts from the tool point (or the fixed point of the machine tool) until it returns to the point and ends the machining process, including the cutting path and the cutting and cutting of the tool. Empty travel path.
The finished feed routes are basically in the order of their part contours. Therefore, the focus of the determination of the feed route is to determine the feed path for roughing and idle travel.
In the machining of CNC lathes, the determination of the processing route generally follows the following principles.

  • should be able to ensure the accuracy and surface roughness of the workpiece being processed.
  • The processing route is the shortest, the idle travel time is reduced, and the processing efficiency is improved.
  • Simplify the workload of numerical calculations and simplify the processing procedure.
  • For some reusable programs, subroutines should be used.

cnc parts
CNC Machining advantages and disadvantages

CNC machining has the following advantages:

  • A large reduction in the number of tooling, processing complex shapes of parts does not require complex tooling. If you want to change the shape and size of the part, you only need to modify the part processing program, which is suitable for new product development and modification.
  • The processing quality is stable, the processing precision is high, the repeating precision is high, and it is suitable for the processing requirements of the aircraft.
  • The production efficiency is high in 3 varieties and small batch production, which can reduce the time of production preparation, machine tool adjustment and process inspection, and reduce the cutting time due to the use of the best cutting amount.
  • It can process complex profiles that are difficult to machine by conventional methods, and even process unprocessable parts.

The disadvantage of CNC machining is that the machine tool is expensive and requires a high level of maintenance personnel.
precision machining
CNC machining refers to machining with CNC machining tools.
The CNC index control machine is programmed by the CNC machining language, usually G code.
The CNC machining G code language tells the CNC machine tool which Cartesian position coordinates to use, and controls the tool feed speed and spindle speed, as well as tool converters, coolants and other functions.
Compared with manual machining, machine operation has great advantages. For example, CNC machining produces parts that are very accurate and repeatable. CNC machining can produce parts with complex shapes that cannot be completed by manual machining.
This technology is now widely promoted. Most machining shops have CNC machining capabilities. The most common CNC machining methods in typical machining shops are CNC milling, CNC and CNC EDM wire cutting (EDM cutting).
The tool for CNC milling is called CNC milling machine or CNC machining center. The lathe for CNC turning is called the CNC turning center. CNC machining G code can be programmed manually, but usually the machining shop uses CAM (Computer Aided Manufacturing) software to automatically read CAD (Computer Aided Design) files and generate G code programs to control the CNC machine.
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PTJ Hardware cnc machining factory
Sifangyuan Industrial Park, Xinshapu, Huaide Community
Humen town, Dongguan City, Guangdong Province
Phone: +86 0769 82886112
Email: sales@pintejin.com