TX1600G Boring And Milling Center Feed System Thermal Error Compensation Based On CompactRIO

Thermal error is one of the major factors that affect the machining accuracy of precision machining center,Through testing,modeling,compensation for thermal error,can eliminate the effect of thermal error on the precision of the machining center in a certain extent,improve the machining precision.This paper aims to improve the precision of NC machine tool feed system,Ball screw feed system guide and ball screw is the key part of machining center.The ball screw to play the precision transmission and positioning function,Guide to play a supporting and guiding role?their thermal Deformation will seriously affect the machining precision?This paper has done a series of analysis and Research on the feed system of TX1600 boring and milling machining center.Find out the factors affecting the thermal error compensation scheme to improve the accuracy of a feed system.LabVIEW is graphical programming languages and development environment,which is known as the engineer's language.With the Lab VIEW Control Design Toolkit,it is convenient and fast for the rapid establishment of single axis servo feed system hardware control system.Clearly,the entire development process friendly interface,can greatly shorten the developing time.In this paper,through the analysis of the system,Established mathematical model of servo feed system.Use MATLAB software of simulation verifies the system performance.Through the contrast simulation results,correctness and stability of servo system mathematical modeling.Use fuzzy clustering method to optimize the feed system of temperature measuring point.Choose the warm key point to mathematical modeling.through the Labview platform to data acquisition for each measuring point temperature changes and the thermal drift of ball screw.According to the data collected by using multiple linear regression method to modeling thermal error compensation on boring and milling machining center for the ball screw system.Develop modeling software modules.Finally using Labview motion control module CompactRIO to compensate for feed motion control system.The main use of NI 9516 motor motion control card,cRIO 9223 real time processor,cRIO9411 chassis and some other module I/O,every step of the module,parameter and attribute set is studied,and the preparation of the response of the VI control program.