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Fast, stable and simple three-coordinate measuring machine needle head diameter reasoning method

A three-coordinate measuring machine and reasoning method technology, applied to measuring devices, instruments, etc., to achieve the effects of stable methods, easy promotion, and fast algorithms

Pending Publication Date: 2022-01-14
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, there is still a lack of a fast, stable, and simple method for inferring the probe needle diameter of a CMM

Method used

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  • Fast, stable and simple three-coordinate measuring machine needle head diameter reasoning method
  • Fast, stable and simple three-coordinate measuring machine needle head diameter reasoning method
  • Fast, stable and simple three-coordinate measuring machine needle head diameter reasoning method

Examples

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Embodiment Construction

[0034] The following are specific examples of the present invention. With reference to the wavelength example provided by the national standard GB / T 6062-2009, the scheme of the present invention is used for further description. The needle diameter obtained by the present invention is the same as that provided by the national standard GB / T 6062-2009. Comparison of needle diameter values. However, the present invention is not limited to these Examples.

[0035] The national standard GB / T 6062-2009 provides an example of the wavelength corresponding to the maximum needle diameter for measuring surface roughness:

[0036]

[0037] Step 1: Assuming that the waviness of the measured surface of the part is a sinusoidal waveform, the obtained wavelength is , corresponding to the amplitude h =0.003 mm .

[0038] After step 1, proceed to step 2.

[0039] Step 2: Assume that the starting diameter is DT1 probe needles. Stability factor m=1 for probe needle diameter, k 1 = 0...

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Abstract

The invention belongs to the field of precision measurement and computer application, and relates to a rapid, stable and simple three-coordinate measuring machine probe head diameter reasoning method, which is realized by the following steps of: 1, acquiring an amplitude h and a wavelength l of a sinusoidal waveform; 2, estimating a stability coefficient ki value and a parameter k2 of the diameter DT1, and solving h1' and h1; 3, calculating the phase of a contact point and the x-axis distance of the contact point; 4, solving the diameter DT1, judging whether the diameter DT1 is appropriate or not, outputting the diameter if the diameter DT1 is appropriate, and otherwise, adopting a simplified algorithm in the next step; 5, simplifying an inference algorithm, assuming n contact points in total, solving k'j and hj for the j-th contact point, then solving a contact point phase and eksl, and then solving DTj until j=n; 6 optimizing the simplified algorithm, assuming that the contact points are very close to the peak top and the contact point phase is pi, solving k'j, hj and eksl, and 7 solving DT and outputting the diameter of the needle head according to an optimization formula.

Description

technical field [0001] The invention belongs to the field of precision measurement and computer application, and relates to a fast, stable and simple reasoning method for the diameter of a probe needle of a three-coordinate measuring machine, which can be used in three-coordinate measuring machine equipment for part error measurement, and can be used for parts processing and processing. Provide guidance for process improvement. Background technique [0002] Dimensional error, shape error (abbreviation of shape error and position error), roughness, etc. directly affect product quality, assembly and service life, fast, stable and simple calculation of the diameter of the probe needle of the three-coordinate measuring machine, used for three-coordinate It is of great significance to measure the part error in the measuring machine equipment. The mechanical probe of the three-coordinate measuring machine often uses a spherical probe head, and the probe needle often acts as a mec...

Claims

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Application Information

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IPC IPC(8): G01B21/10
CPCG01B21/10
Inventor 黄美发刘廷伟唐哲敏罗民宏
Owner GUILIN UNIV OF ELECTRONIC TECH
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