The concept of CNC machining
The working principle of a CNC machine tool is to represent the various operations required for the processing process (such as spindle speed, workpiece release and clamping, feed and retreat, driving and parking, automatic shutdown of coolant) and steps, as well as the shape and size of the workpiece, in a digital code, through a control medium (such as perforated paper tape or disk, etc.) The digital information is fed into the CNC device, the CNC device processes and calculates the input information, sends out various control signals, and controls the servo system or other drive components of the machine tool to automatically process the required workpieces.Therefore, the key to CNC machining is the acquisition of machining data and process parameters, that is, CNC programming.CNC machining generally includes the following contents：
(1) Analyze the drawings and determine the parts that need CNC machining；
(2) Use graphics software (such as CAXA manufacturing engineers) to model parts that require CNC machining；
(3) According to the processing conditions, select the appropriate processing parameters and generate the processing trajectory (including roughing, semi-finishing, and finishing trajectories)；
(4) Simulation inspection of trajectory；
(5) Generate G code；
(6), Passed to the machine tool for processing.
Characteristics of CNC machine tools
Machining parts on CNC machine tools mainly depends on the processing procedures. It is different from ordinary machine tools. There is no need to manufacture or replace many tools and fixtures, and the machine tools do not need to be adjusted frequently.Therefore, CNC machine tools are suitable for frequent replacement of parts.That is, it is suitable for single-piece, small-batch production and new product development, which shortens the production preparation cycle and saves a lot of process equipment costs.
The working principle of a CNC machine tool is to represent the various operations required for the processing process (such as spindle speed,
What is a CNC machine tool!Do you really know?
The development of science and technology has put forward high-precision and high-complexity requirements for mechanical products, and the upgrading of products is also accelerating. This not only puts forward the requirements for accuracy and efficiency of machine tools and equipment, but also puts forward the requirements for versatility and flexibility.CNC machine tools are a new type of automated machine tools produced in response to this requirement.
Characteristics of CNC machine tools
The operation and monitoring of CNC machine tools are all done in this CNC unit, which is the brain of CNC machine tools.Compared with ordinary machine tools, CNC machine tools have the following characteristics:
The manufacturing technology of CNC machine tools is different from ordinary machine tool manufacturing
Machine tool companies have not realized the significance of the national strategy for machine tool manufacturers. The manufacturing industry is struggling towards the high ground of technological leadership. Technological leadership means that the processing technology and machining accuracy must be greatly improved. Where will there be a market for cheap machine tools?
Analysis of China's CNC machine tool supply and import and export situation in 2022
From 2018 to 2021, the output of metal cutting machine tools in China will show an overall upward trend, the output of metal forming machine tools will show an overall decreasing trend, and the output of metal processing machine tools in China will show an overall increasing trend.In 2021, China's metal cutting machine tool production was 602,000 units, an increase of 34.98% year-on-year; metal forming machine tool production was 210,000 units, an increase of 3.96% year-on-year; total metal processing production reached 812,000 units, a record high.