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.

Inactive Publication Date: 2005-07-27
HARBIN INST OF TECH
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Problems solved by technology

It has the disadvantages of long measurement period and large drift of the measurement system, which makes it difficult to control the change of the measurement state during the error separation process, which will eventually lead to large dispersion of the separation results and reduce the separation accuracy;
[0005] 2) In principle, the "multi-probe method" can solve the problem of harmonic suppression by increasing the number of sensors and properly arranging the positions between the sensors. The stylus is on the same measurement contour and needs to be readjusted when the diameter of the workpiece to be measured is different, so it is difficult to be popularized and applied in the roundn...

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  • Single-transposition roundness fault separating method
  • Single-transposition roundness fault separating method
  • Single-transposition roundness fault separating method

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Embodiment Construction

[0047] The single index roundness error separation method of the present invention is described in detail in conjunction with the embodiments and accompanying drawings as follows:

[0048] Taking the sensor rotary roundness meter as an example, the method and process of separating the spindle rotation error z(n) and the workpiece roundness error g(n) are explained.

[0049] A certain fixed position a on the rotary spindle of the roundness meter is taken as the starting point of instrument measurement, the workpiece to be measured is placed on the error separation turntable, and the starting reference point of the workpiece is set as b. Such as image 3 As shown, after the workpiece is measured at the first index position, turn the error separation turntable so that the workpiece reference point b is rotated counterclockwise by an angle α relative to the starting point of the roundness meter spindle measurement, so that the workpiece is at the second index position before proce...

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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.

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 ...

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Application Information

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IPC IPC(8): G01B21/20
Inventor 赵维谦谭久彬
Owner HARBIN INST OF TECH
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