In the processing of CNC machine tools, the geometric accuracy of the machine tool is affected by external factors such as external forces and heat generated during processing. The geometric deformation of the parts processed on the machine tool can lead to geometric errors. The internal factors that cause geometric errors in CNC machining machines refer to the geometric errors caused by the machine itself, such as the levelness of the machine workbench, the levelness and straightness of the machine guide rails, and the geometric accuracy of the machine tools and fixtures. External factors mainly refer to geometric errors generated during high-precision CNC machining due to the influence of external environment and thermal deformation.
The influence of high-precision CNC machining position error on machining accuracy. Position error refers to the degree of variation or deviation between the actual surface, axis, or symmetry of the CNC machined part and its ideal position, such as verticality, positional accuracy, symmetry, etc. The main reasons for positional errors in CNC machining are the clearance and elastic deformation caused by transmission during the machining process of machine parts, as well as the positional errors caused by factors such as friction force that the tool head needs to overcome during CNC machining.
From the long-term data analysis and practical operation of high-precision CNC machining, it can be seen that the positioning of CNC machining machines causes machining accuracy errors. The positioning of machine tools has a significant impact on the CNC machining accuracy of CNC machine tools. From a structural perspective, the CNC machining errors of CNC machine tools are mainly caused by positioning accuracy, and the feed system of the machine tool is the main link that affects positioning accuracy.
