RT Journal Article
SR Electronic
A1 Zhao, Changlong
A1 Li, Ming
A1 Yang, Junbao
A1 Ma, Chen
A1 Ma, Zhenrong
T1 Research on the Measurement of Thermal Deformation of Tools on High-speed Machining Centers Based on Image Processing Technology
JF Manufacturing Technology Journal
YR 2022
VO 22
IS 4
SP 484
OP 493
DO 10.21062/mft.2022.060
UL https://journalmt.com/artkey/mft-202204-0015.php
AB This paper focuses on the issues of tool thermal deformation during machine preheating，designing an image-processing-based solution for measuring these tool thermal deformation, to obtain the axial thermal error of the tool as a function of preheating time.This paper uses a high-speed camera to collect images of tool thermal deformation. Using MATLAB software, rough localization of images by Canny algorithm for edge extraction. Accurately locating tool edge outlines using a sub-pixel fitted edge detection method, that is, using the least squares method to fit a tool tip arc curve. From this, the thermal deformation during tool preheating is calculated. This study will serve as a basis for the compensation of thermal errors in machine tools.