Single-transposition roundness fault separating method

A roundness error and separation method technology, applied in the direction of measuring devices, instruments, etc., can solve the problems of reducing the separation accuracy, having a large impact on the drift of the measurement system, and it is difficult to ensure the same measurement profile of the probe.
CN1645047AInactive Publication Date: 2005-07-27HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2005-07-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for separating roundness error of single transposition includes selecting proper transposition angle a for carrying out single small angle transposition in relevant angle to rotation major axis and realizing complete harmonic separation of z(n) and g(n) as in scope of 1-100 upr harmonic wave by measuring workpiece error g(n) and major axis transposition error z(n) before and after workpiece transposition as well as utilizing quick. Fourier series transform and harmonic analysis.
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Description

technical field

[0001] The invention belongs to the technical field of precision instrument manufacturing and measurement, in particular to an ultra-precise roundness error separation method. Background technique

[0002] As a basic means of separating the error of the rotating spindle of the instrument and the roundness error of the measured workpiece, the error separation technology has been widely used in precision roundness measuring instruments to improve its measurement accuracy. The error separation technology used in precision roundness measurement can be divided into two types: Large categories, one is the "multi-position method" that uses multiple indexing of the workpiece to obtain additional information, and the other is the "multi-probe method" that obtains additional information by increasing the number of sensors. "Multi-transposition method" also includes "multi-step method" and "reverse method". Generally speaking, the accuracy level of precision roundness ...

Claims

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