What is cnc machining?

Views: 28     Author: Wang     Publish Time: 2022-10-11      Origin: Ruili

CNC machining refers to the processing in which the control system issues command to make the tool perform various movements that meet the requirements and express the shape and size of the workpiece in the form of numbers and letters. It generally refers to the process of machining parts on CNC machine tools. A CNC machine tool is a machine tool controlled by a computer. The computer used to control the machine tool, whether it is a dedicated computer or a general-purpose computer, is collectively referred to as a numerical control system. The movement and auxiliary actions of CNC machine tools are controlled by the commands issued by the CNC system.


A CNC machine tool is a machine tool controlled by a computer. The computer used to control the machine tool, whether it is a dedicated computer or a general-purpose computer, is collectively referred to as a numerical control system. The movement and auxiliary actions of CNC machine tools are controlled by the commands issued by the CNC system. The controlled actions of the machine tool roughly include the start and stop of the machine tool; the start and stop of the spindle, the change of the rotation direction and speed; the direction, speed, and mode of the feed movement; the selection of the tool, the compensation of the length and radius; the replacement of the tool, the cooling Liquid opening, and closing, etc.

cnc machining 1

(picture from google)

Main features: 

The CNC machine tool selects aircraft parts with complex profiles as the processing objects from the very beginning, which is the key to solving the problem that ordinary processing methods are difficult to solve. The biggest feature of CNC machining is to use of punched tape (or magnetic tape) to control the machine tool for automatic machining.

1. The process is concentrated

CNC machine tools generally have tool holders and tool magazines that can automatically change tools. The tool-changing process is automatically controlled by the program, so the process is relatively concentrated.

2. Automation

When CNC machine tools are processed, there is no need to manually control the tool, and the degree of automation is high. The benefits are obvious.

3. High flexibility

Traditional general-purpose machine tools have good flexibility, but low efficiency; and traditional special machines, although high in efficiency, have poor adaptability to parts, high rigidity, and poor flexibility, making it difficult to adapt to the fierce competition in the market economy. Products are frequently modified. As long as the program is changed, new parts can be processed on the CNC machine tool, and the operation can be automated, with good flexibility and high efficiency, so the CNC machine tool can well adapt to market competition.

4. Strong ability

CNC machining can precisely machine various contours.

cnc machining

(picture from google)


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