A non-interference five-axis scanning trajectory generation method and system
A scanning trajectory, non-interference technology, applied in the field of non-interference five-axis scanning trajectory generation methods and systems, can solve the problems of collision accidents, interference inspection time-consuming, and there is no interference-free five-axis scanning measurement path generation method, etc. The effect of accurate area and reduced calculation amount
Active Publication Date: 2022-03-01
SHANGHAI JIAOTONG UNIV
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[0006] [2] Y. Zhang, K. Tang, Automat ic Sweep Scan Path Planning for Five-Axi s Free-Form Surface Inspection Based on Hybrid Swept Area Potential Field, IEEE Transactions on Automation Science and Engineering, 16(2019) 261-277. They assume that the measured surface is relatively flat and there are no obstacles around it, which obviously does not match the actual application
[0007] During the actual measurement process, whether it is the part fixture or the structure of the part itself, it may interfere with the high-speed swinging stylus, causing serious collision accidents
Existing literature: [3] P.Hu, H.Zhou, J.Chen, C.Lee, K.Tang, J.Yang, S.Shen, Automatic generation of efficient and interference-free five-axis scanning path for free -form surface inspection, Computer-Aided Design, 98(2018) 24-38. A measurement path planning method that partially considers the interference problem, and also clearly points out that the special motion mode of five-axis scanning measurement makes the global interference inspection extremely consuming Time
Therefore, there is not yet an efficient method for generating measurement paths for non-interference five-axis scanning
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[0042] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0043] An embodiment of the present invention provides a method for generating a non-interference five-axis scanning trajectory, wherein the five-axis scanning measurement path is uniquely determined by the movement trajectory of the measuring seat driven by the three coordinates and the movement trajectory of the measuring ball driven by the stylus. In the five-axis scanning measurement, the three-coordinate machine maintains a low-speed and stable movement, while the stylus is always in close contact w...
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The invention provides a method and system for generating a non-interference five-axis scanning trajectory, which relates to the technical field of five-axis scanning measurement trajectory generation. The central axis of the surface is used as the guide line; step S2: according to the feasible area of different points on the guide line in step S1, calculate and determine the optimal pixel position of the feasible area of the measuring seat, and then fit the optimal position of the feasible area to determine the optimal Control the number of points to obtain a smooth and interference-free scanning track of the measuring head. The present invention can quickly obtain the feasible region of the next point by analyzing the interference situation of the edge position of the feasible region at the previous point on the guide line, greatly reducing the calculation amount of interference check; and can ensure that the trajectory is as smooth as possible without interference .
Description
technical field [0001] The present invention relates to the technical field of five-axis scanning measurement track generation, in particular to a non-interference five-axis scanning track generation method and system. Background technique [0002] Parts with complex surfaces are widely used in the aerospace field. Whether it is quality inspection or reverse engineering, it is necessary to measure high-precision dense point clouds on the surface of the part. Three-coordinate measuring machines are widely used in industrial production links due to their high precision, large measurement range, and strong versatility. The traditional three-coordinate measurement mode mainly includes point-by-point measurement and three-axis scanning measurement. Due to its repetitive "start-stop" action, the point-by-point measurement has extremely low measurement efficiency when the number of measurement points is large. In the three-axis scanning measurement, the scanning process is comple...
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IPC IPC(8): G01B21/20
CPCG01B21/20
Inventor 张杨沈毅君张亚奇朱利民张超奇黄诺帝
Owner SHANGHAI JIAOTONG UNIV