CNC milling machining refers to a processing method of processing raw materials into parts on a CNC machining machine tool. The process regulations of the CNC machining machine tool and the traditional processing machine tool are generally the same, but there are also obvious changes. A machining method that uses digital information to control the displacement of CNC machining parts and cutters. It is an effective way to solve the problems of multiple parts materials, small batches, complex shapes, high precision, etc., and to achieve high-efficiency and automated processing.
In CNC milling machining, we often hear the word CNC, but most people don’t understand it. What does CNC mean? This article mainly focuses on the word “CNC” in the CNC milling machining industry. If you are interested in CNC, please continue to read the following articles.
What is a CNC milling machining machine tool? What does CNC mean?
The definition of CNC machine tool by the Fifth Technical Committee of the International Information Service Union is as follows: CNC machine tool is a machine tool installed with a program control system. The system can logically process programs that have codes using numbers or other symbol codes.
The first “C” in “CNC” is the first letter of the English “computer”, and “N” is the English “number” Prefix; the last letter “C” is the first letter of “control” in English. So “CNC” system is called “computer digital control system” in Chinese. The “CNC” system is the core part of CNC machine tools. The strength of the CNC machining machine tool’s function is mainly determined by the CNC function.
Operation of CNC milling machining Machine
Personal computer or data transmission system (unified management and organization of data, generating program according to specific structure) —— CNC milling machining device (the CNC device receives the information of the input medium) —— servo system (used to Accurately follow or reproduce the feedback control system of a certain process)—-machine tool (machined mechanical lathe)—measurement and feedback system (feedback data to the numerical control device)
What are the main controls of CNC milling machining machine tools?
In terms of the purpose of CNC milling machining machine tools, there are mainly the following three aspects:
a. Feed motion control during processing (that is, control of table motion);
b. Control the spindle movement;
c. Program input/output (I/0) control, that is, the control of various states of the CNC milling machining machine tool. Such as: cooling, lubrication, automatic start-stop tool exchange, etc.
What are the characteristics of CNC milling machining machine tools?
1) Improve productivity: As far as production efficiency is concerned, compared with ordinary CNC milling machining machine tools, the efficiency of CNC machine tools can generally be increased by 2 to 3 times, or even more than ten times. Mainly reflected in the following aspects:
a. Multi-process processing can be completed in one clamping, eliminating the need for common CNC milling machining machine tools to change jobs, transfer parts between processes, and scribe lines.
b. Simplified fixtures and special tooling, etc., because it is a single clamping to complete the CNC milling machining processing. Therefore, the multi-process fixtures of ordinary machine tools are omitted, even if special fixtures must be used occasionally. The fixture structure can be simplified due to the function of the CNC milling machining machine tool.
2) High machining accuracy: CNC milling machining machine tool is a complex of precision machinery and automation technology. The numerical control processing device of the machine tool can compensate the errors caused by the displacement and thermal deformation caused by the motion of the machine tool through the measurement system to obtain high and stable processing accuracy. Since the CNC milling machining machine tool realizes automatic processing, the human error caused by the operator is reduced, and the accuracy of the CNC milling machined parts is improved.
3) Conducive to production management:
a. It is convenient to control processing and change varieties by program;
b. Multi-process processing with one machine reduces the management of the production process and reduces management personnel;
C. Unmanned production can be realized.
4) Improve working conditions. For example, the CNC milling machining parts adopt fully enclosed guards, and the machine tool will not splash out of water, oil, iron filings, and effectively keep the working environment clean.
5) Reduce labor intensity, and the operation of CNC milling machining machine tool is changed from physical to intellectual.
The scope of application of CNC milling machining machine tools
Due to the above-mentioned characteristics of CNC milling machining machine tools, suitable for CNC machining parts are:
1. Small batches, repeated production of CNC machining parts;
2. CNC machining parts with complex geometric shapes;
3. Processing of valuable parts;
4. All parts that need to be inspected;
5. Proofing parts.
Summarize
The “CNC” system is the core part of the CNC milling machining machine tool. The function of CNC milling machining machine tool is mainly determined by the function of CNC machine tool. Therefore, CNC system is an indispensable part of CNC machine tools. CNC machining can produce ultra-high-precision parts, the tolerance can reach ±0.01mm, and the fine hole tolerance can reach 0.002mm. But there is no shortage of CNC machining that can achieve higher precision tolerances.