PT  - JOURNAL ARTICLE
AU  - Zhao, Changlong
AU  - Li, Ming
AU  - Yang, Junbao
AU  - Ma, Chen
AU  - Ma, Zhenrong
TI  - Research on the Measurement of Thermal Deformation of Tools on High-speed Machining Centers Based on Image Processing Technology
DP  - 2022 Oct 17
TA  - Manufacturing Technology Journal
PG  - 484--493
VI  - 22
IP  - 4
AID - 10.21062/mft.2022.060
IS  - 12132489
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.