PT Journal
AU Zhao, C
   Li, M
   Yang, J
   Ma, C
   Ma, Z
TI Research on the Measurement of Thermal Deformation of Tools on High-speed Machining Centers Based on Image Processing Technology
SO Manufacturing Technology Journal
PY 2022
BP 484
EP 493
VL 22
IS 4
DI 10.21062/mft.2022.060
DE Thermal deformation of tools; Image processing; Edge Extraction; Least squares method
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.
ER