Model And Measurement Software And Experimental Research Of Six Degree Of Freedom Error Compensation For Rotating Shaft

In the 21 st century,with the development of artificial intelligence,the rotating shaft,as the benchmark of rotating motion,has become an important part of precise measurement,processing and control,and plays an important role in high-end processing and manufacturing,aerospace,optical analysis and other fields.It is one of the main ways to improve the accuracy of measuring,processing and controlling equipment.The development of high-precision full cycle measuring instrument is of great significance for the progress of high-end processing and manufacturing,aerospace and other fields.In this paper,further research work is carried out to solve the problems in the measurement system of six degree of freedom geometric motion error of rotating shaft based on laser collimation and laser interference.The main purpose of this paper is to realize the high accuracy and fast simultaneous measurement of the six degree of freedom geometric motion error of the rotating shaft.The main contents of this paper are as follows:1.The development status and research significance of the measurement method of six degrees of freedom geometric motion error of the precision rotating shaft are summarized.The working principle of the optical system of the experimental platform,the measurement principle of six geometric motion errors and the main performance indexes of each instrument of the platform are introduced.2.Establish and perfect the error analysis and compensation model of the six degree of freedom geometric motion error simultaneous measurement system.According to the motion mode of the shaft and the measurement principle of the geometric motion error of each degree of freedom,a general kinematic model based on the homogeneous coordinate transformation method is established.The model can be used to calculate the space error compensation value of the measurement system.The influence of installation error,manufacturing error and error crosstalk of the main components of the system on the measurement results is analyzed.ZEMAX and MATLAB are used to simulate the measurement system and compensation model.3.In order to meet the market-oriented demand of precision test preparation products,a software development interface based on C#WPF is used to realize the functions of parameter configuration,spot position visualization,compensation curvedrawing,saving,etc.,which not only meets the basic requirements of experimental visualization,but also has the visual demand of object-oriented and market-oriented.The six degrees of freedom of the rotating shaft are measured at the same time.The six degrees of freedom error of the positioning point every 30 ° around the rotating shaft before and after the compensation by the error model is analyzed,as well as the repeatability value change degree before and after the compensation.The comparison experiments of the measuring instrument with autocollimator and one-dimensional laser displacement sensor are carried out and the comparison errors are analyzed.At the same time,it points out the shortcomings of the current measuring instruments and gives reasonable suggestions.