What errors will occur in CNC machining?

CNC machining is the use of computer digitization and information digitization technology to control the movement and processing of machine tools. The device is a high-speed, reliable, multi-functional, intelligent and open intelligent universal pneumatic numerical control system. CNC machining is also an important indicator to measure the level of 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, biology, and medicine. Therefore, improving the technical level is an important way to improve the comprehensive national strength and national status. Therefore, what errors will occur in CNC machining? Let's take a look at the following:

The principle error of CNC machining is mainly due to the use of approximate machining motion patterns or tool contours. The reason why it is called processing principle error is because there is an error in principle. In the case that the principle error does not exceed the allowable range, this processing method is still feasible. During use, manufacturing errors, installation errors and wear directly affect the machining accuracy of the workpiece. These errors include the rotational motion of the machine tool spindle, the linear motion of the machine tool guides, and the error of the machine tool drive chain.

The manufacturing error, installation error and wear of CNC machine tools have a great influence on the machining accuracy of the workpiece. During the cutting process of the tool, the cutting edge, the cutting surface and the workpiece and chips generate strong friction, which causes the tool to wear. After 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 during cutting directly affects cutting productivity, machining quality and cost. CNC machining fixture errors mainly include positioning error, clamping error, fixture installation error and tool installation error. The error is mainly related to the machining and assembly accuracy of the fixture.

The positioning error in CNC machining mainly includes the error in the error datum and the manufacture of the error positioning pair. When machining a workpiece, multiple geometric feature points on the workpiece should be selected as positioning datums to determine the machining position. If the selected positioning datum is inconsistent with the design datum, a datum uncorrected error will occur. The positioning surface and the fixture positioning element constitute a positioning pair. During the processing, due to the inaccurate processing of the positioning pair and the matching gap between the positioning pairs, the position of the workpiece changes greatly, which is the processing error of the positioning pair. When the adjustment method is used for processing, the manufacturing error of the positioning pair only appears in the adjustment method, not in the trial cutting process.

The above description is the error that may occur in CNC machining, I hope it can help you, if you want to know more about CNC machining, Welcome to consult customer service online or call our service hotline (upper right corner of the website) for consultation, we will wholeheartedly provide you with quality service!