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What deviations may occur in the CNC milling machining?

16   |   Published by VMT at Jun 04 2021

 

CNC milling machining is a method of controlling the movement and processing of machine tools through computer digitization and information digitization. It is a high-speed, reliable, multi-functional, intelligent, and open structure intelligent general-purpose pneumatic numerical control device. Numerical control CNC milling machining is also an important indicator to measure the level of scientific and technological development and comprehensive national strength of a country, as well as the degree of modernization of information technology, especially in high-tech industries such as aviation, military industry, and medical treatment. An important role. The role is immeasurable, and it is also a manifestation of the strength of a country. Therefore, improving this technology is an important way to enhance the country's comprehensive national strength and status. So, what deviations may occur in the CNC milling machining? Take a look:

 

CNC milling machining-1

 

Manufacturing errors, installation errors and wear of CNC milling tools will affect the machining accuracy of the workpiece. During the cutting process of the tool, the cutting edge and cutting surface have strong friction with the workpiece and chips, causing tool wear. When the tool wear reaches a certain value, the surface roughness value of the workpiece increases, and the color and shape of the chips change, accompanied by vibration. Tool wear will directly affect cutting productivity, machining quality and cost. Fixture errors in CNC milling include positioning errors, clamping errors, fixture installation errors and tool setting errors. These errors are mainly related to the manufacturing and assembly accuracy of the fixture.
 

The positioning errors of CNC milling mainly include datum misalignment errors and positioning pair manufacturing errors. When machining a workpiece on a machine tool, multiple geometric features on the workpiece must be selected as a positioning reference during the machining process. If the selected positioning reference is inconsistent with the design reference, a reference misalignment error will occur. The workpiece positioning surface and the fixture positioning element together constitute a positioning pair. The large change in the position of the workpiece caused by the inaccurate manufacturing of the positioning pair and the fit gap between the positioning pairs is called the inaccurate manufacturing error of the positioning pair. The inaccurate manufacturing error of the positioning pair will only appear when the adjustment method is used, and it will not appear when the trial cutting method is used.

 

The above is about the possible deviations in the CNC milling machining. I hope reading it is helpful to you. For more information, please click here:https://www.machining-custom.com/blog/

 

 

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