Digital evaluation method for public reference radial total run-out error

Abstract

The invention belongs to the field of precision measurement and computer application, and relates to a rapid, stable, simple-form and digital evaluation method for a public reference radial total run-out error. The method comprises the following steps: acquiring an initial measuring point set of a measured section and a reference section; carrying out pre-positioning to obtain a pre-positioned reference section measuring point set, a measured section measuring point set and a reference section cross section initial circle center coordinate set; constructing a parameter matrix according to eachsection measuring point of the reference section, constructing an analysis matrix by the key point set for analysis, and determining an optimization strategy; updating a reference section cross section circle center coordinate set according to an optimization result; constructing a parameter matrix according to the reference section circle center coordinate set, constructing an analysis matrix according to the key point set for analysis, and determining an optimization strategy; updating measurement point sets and related parameters of the reference section and the measured section accordingto an optimization result; judging whether the reference section and the measured section meet the design size requirement or not; and calculating and judging whether the radial total run-out error ofthe measured section of the measured shaft is qualified or not.

Description

technical field [0001] The invention belongs to the field of precision measurement and computer application, and relates to a rapid, stable, simple and digital public reference radial full runout error evaluation method, which can be used to use the axis of the specified shaft section on both sides of the shaft section to be measured as the public reference axis The evaluation of the radial full runout error of shaft parts, and provide guidance for the improvement of its processing technology. Background technique [0002] Shaft parts are one of the more common parts in mechanical processing. The dimensional error and shape error (short for shape error and position error) generated during the machining process directly affect product quality, assembly and service life. Quickly and accurately It is of great significance to calculate the part error. [0003] Radial runout is one of the important indicators of the geometric tolerance of shaft parts. The national standard GBT 1...

AI Technical Summary

Problems solved by technology

However, this method is very sensitive to the initial value and is not always stable for the geometry evaluation task

[0009] To sum up, when the current geometric evaluation method is applied to the evaluation of the common datum radial runout error of shaft parts, it cannot be fast, stable and simple in form at the same time.

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