Image-type Intelligent Calibration and Compensation System to Five Axis Machine Tools

• Main Authors: Zai-Yuan Li, 李在原
• Other Authors: 覺文郁
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/2826h6

碩士 === 國立虎尾科技大學 === 自動化工程系碩士班 === 104 === The current international standards for machine tool inspection can be divided in two categories: those involving accuracy inspections and those involving (e.g., cutting) tool parameter measurements. Moreover, there is no commercial inspection instrument capable of measuring both the inaccuracy and tool parameters of five-axis machine tools. In order to solve the above problems, the main purpose of this study aims to use CCD, imaging processing software, precision sphere and self-developed human-machine interface installed with library to connect with the commercial controllers for accomplishing automatic inspection and compensation of five-axis machine centers and cutting tools adopted, which is free of the inconveniences and risks due to manual compensation. The proposed system is described as follows: the CCD and test item (precision sphere or precision sphere plus cutting tool) are assembled between the spindle and working table of the machine tool to be measured. The test item is set in the detection area of CCD for inspecting its trajectory which is moved by spindle according to the measuring path of ISO standard. The captured trajectory images of cutting tool or precision sphere are calculated and analyzed by image software for tool parameters modification or errors detection, such as XOC, YOC, AOC, XOA, ZOA, ECC, EAA, EBB, and backlash errors. Finally, these data can be automatically feedback to commercial controllers via the human-machine interface for error and parameter compensation. System specifications are listed as following: (1)System accuracy ± 1μm; (2)Dynamic / static measuring; (3)Automatic compensation for FANUC and HEIDENHAIN controllers; (4)Capable of detecting assembly errors, rotary-axis eccentricity, rotary-Axis positioning accuracy error, backlash error, and cutting tool error.