Fast, stable and simple maximum inscribed cylinder diameter assessment method

Abstract

The invention belongs to the field of precision measurement and computer application, and particularly relates to a stable, fast and simple-form maximum inscribed cylinder diameter assessment method comprising the following steps that step 1: a measuring point set is acquired, and a feature row vector set, a boundary element set and a state element set are established according to the measuring point set; step 2: the measuring point corresponding to the minimum value of the state element set is taken as the key point and the measuring point number is added to the key point set; step 3: an analysis matrix and analysis column vectors are established according to the key point set; step 4: rank analysis is performed on the analysis matrix and an augmented analysis matrix so as to determine whether to continue optimization, eliminate the key point or terminate the program and obtain the optimal value; step 5: the analysis matrix and the analysis column vectors are solved so as to obtain the optimization direction; step 6: a new key point is solved by the pursuit problem, the measuring point state set is updated and the process enters the next cycle; and step 7: the program is terminated and the optimal value is obtained.

Description

technical field [0001] The invention belongs to the field of precision measurement and computer application, and relates to a stable, rapid and simple method for evaluating the diameter of a maximum inscribed cylinder, which can be used for evaluating the diameter of a maximum inscribed cylinder of parts with a structure of a revolving body, and for its Provide guidance for the improvement of processing technology. Background technique [0002] Dimensional error and shape error (abbreviation of shape error and position error) directly affect product quality, assembly and service life. It is of great significance to quickly and accurately calculate part error. The definition and identification method of the maximum inscribed cylinder diameter are given in the national standard and ISO standard, but the method of calculating the maximum inscribed cylinder diameter value from the measurement data is not given. At present, the evaluation method of the maximum inscribed cylinder...

AI Technical Summary

Problems solved by technology

However, this method is very sensitive to the initial value and cannot always complete the task of evaluating the maximum inscribed cylinder diameter stably

[0008] In summary, there is still a lack of a stable, fast and simple method for evaluating the diameter of the largest inscribed cylinder

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