On-machine measurement collision-free global path planning method and system

Abstract

The invention relates to an on-machine measurement collision-free global path planning method and system. The on-machine measurement collision-free global path planning method comprises the steps of: acquiring features of a part model; determining a safety point of the part model and a bounding box of the part model according to the features of the part model; acquiring a sweeping body generated by the movement of the measuring head; determining interference safety points in the safety points of the part model according to the sweeping body; according to the bounding box of the part model and the interference safety point, determining an obstacle avoidance point of the part model by adopting a sweeping body method; and planning a global path of the part model according to uninterfered safety points in the safety points of the part model and the obstacle avoidance points. According to the on-machine measurement collision-free global path planning method, collision-free planning of the global path based on the three-dimensional model is automatically realized, and the efficiency of on-machine measurement path planning is greatly improved.

Description

technical field [0001] The invention relates to the field of path planning for complex parts, in particular to a collision-free global path planning method and system for on-machine measurement. Background technique [0002] The path planning of complex parts has the characteristics of multiple paths and multiple measurement working planes. Therefore, in the path planning process, the planned path is likely to interfere with the part model. The current research on interference in path planning is mainly for special parts or special environments. For complex 3D environments, the effect is average. Therefore, at present, more methods of manually adding or changing points are used to achieve obstacle avoidance, resulting in a cumbersome and time-consuming path planning process. Contents of the invention [0003] The purpose of the present invention is to provide a collision-free global path planning method and system for on-machine measurement, which automatically realizes t...

AI Technical Summary

Problems solved by technology

[0002] The path planning of complex parts has the characteristics of multiple paths and multiple measurement working planes. Therefore, in the path planning process, the planned path is likely to interfere with the part model. The current research on interference in path planning is mainly for special parts or special environments. Generally effective for complex 3D environments

Therefore, at present, more methods of manually adding or changing points are used to achieve obstacle avoidance, resulting in a cumbersome and time-consuming path planning process.

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