3D probe on-machine measurement automatic programming method based on MBD model

Abstract

The invention discloses an MBD model-based 3D probe on-machine measurement automatic programming method. The method comprises the steps of extracting PMI information in a three-dimensional model, constructing a to-be-measured feature list according to the PMI information, performing measurement point strategy distribution based on measurement features, and automatically generating an on-machine measurement macroprogram. The method has the advantages that on the basis of the MBD model, product and manufacturing information including manufacturing parameters such as size, shape and position is extracted through the API technology, surface parameters and text annotations in the CAD model are also included, tolerance, distance, diameter, radius, angle, form and location tolerance and other information are correctly transmitted to an on-machine measurement macroprogram. Through the basic measurement macroprogram combination, the on-machine measurement process of the part is automatically completed, so that the detection accuracy is ensured, and the detection efficiency is improved.

Description

technical field [0001] The invention relates to an automatic programming method, in particular to an MBD model-based automatic programming method for on-machine measurement of a 3D probe, and belongs to the technical field of on-machine measurement. Background technique [0002] With the development of modern manufacturing technology, the product structure of enterprises is becoming more and more complicated, diversified and high-quality, and the quantity and quality constraints of product parts are becoming more and more complicated. The inspection workload faced by quality inspectors is also increasing. And with the high-quality requirements of products, the phenomenon of increasing detection data will become more and more obvious in the future. [0003] Generally speaking, in the traditional online inspection process of CNC machine tools, after the quality inspector obtains the design model, he needs to manually check the elements and characteristics of the processed part...

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Problems solved by technology

[0005] Therefore, aiming at the problems of low manual programming efficiency, high cost, and error-prone programming in the traditional online measurement process, manual intervention is reduced, and the PMI information of the design constraints is directly extracted through the MBD information of the 3D model, and the automatic programming method is adopted. Propose an automatic programming method for on-machine measurement of 3D probe based on MBD model

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