Content area
Ball screws are subjected to complex loads during machining processes, which affects the position accuracy of the feed shaft of machine tools. The lack of a reliable model for analyzing the deformation of the ball screw, coupled with the unclear relationship between the deformation of the ball screw and the position error of the feed shaft, makes it challenging to accurately predict and compensate for the position error. The objective of the present research is to investigate the correlation between the deformation of the ball screw and the position error of the feed shaft to improve the accuracy of the machine tool. First, this paper establishes a FEM model to explore the loading and deformation of the ball screw. Secondly, a method for predicting position errors based on the deformation of the ball screw is proposed. Finally, the ball screw-loading test device is used for the position error compensation experiment to verify the reliability of the prediction method. This paper serves as a reference for understanding the generation mechanism of position errors in machine tool feed systems.
Details
Error analysis;
System reliability;
Feed systems;
Predictions;
Machining;
Error compensation;
Ball screws;
Position errors;
Machine tools;
Load;
Simulation;
Accuracy;
Advanced manufacturing technologies;
Measurement techniques;
Manufacturing;
Deformation;
Contact angle;
Mechanical engineering;
Efficiency
1 Shandong University, Key Laboratory for High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Jinan, PR China (GRID:grid.27255.37) (ISNI:0000 0004 1761 1174); Shandong University, Key National Demonstration Center for Experimental Mechanical Engineering Education, Jinan, PR China (GRID:grid.27255.37) (ISNI:0000 0004 1761 1174)
2 JIER Machine-Tool Group Co., Ltd., Jinan, PR China (GRID:grid.27255.37)