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Three-dimensional shape characterization method for gear tooth surface

A three-dimensional topography and gear technology, which is applied to measurement devices, instruments, optical devices, etc., can solve the problems of low measurement accuracy and easy occlusion of light transmission, achieve high measurement accuracy, avoid light path occlusion, and reduce measurement costs. Effect

Inactive Publication Date: 2019-02-15
XIAN TECHNOLOGICAL UNIV
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Problems solved by technology

[0004] The present invention is to provide an optical, full-field, and non-contact three-dimensional shape characterization method for gear tooth surfaces that can effectively solve the problems of light transmission being easily blocked and low measurement accuracy in the process of gear tooth surface characterization by existing optical methods

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  • Three-dimensional shape characterization method for gear tooth surface
  • Three-dimensional shape characterization method for gear tooth surface
  • Three-dimensional shape characterization method for gear tooth surface

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the drawings and embodiments.

[0026] The present invention proposes a real grating projection gear tooth surface three-dimensional shape characterization method, the method introduces a uniform phase shift for the measurement field of view by moving the grating in the plane, constructs a random phase shift technology, and eliminates the misalignment error in the phase demodulation process, And take the phase as the measurement feature, and use its invariance characteristics to build a phase-height difference look-up table, quickly restore the three-dimensional measurement surface, and finally provide a way to build a fast and high-precision three-dimensional profile measurement technology for gears.

[0027] see figure 1 with figure 2 , which is the device used in the well-known surface structured light measurement method. It includes: (1) a point light source, (2) a CCD camera, (3) a Roche g...

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Abstract

The invention provides a three-dimensional shape characterization method for a gear tooth surface in real grating projection. The method uses a plane moving grating to introduce a uniform phase shiftfor the measurement field of view, and constructs a random phase shift technique to eliminate the offset error in the phase demodulation process. The method uses the phase as the measurement feature,and uses its invariance characteristics to construct a phase-height difference look-up table to quickly recover the three-dimensional measurement surface, and finally provides a way to construct a fast, high-precision gear three-dimensional contour measurement technology. The method of the invention provides an effective way for non-contact measurement of spur gears and helical gears.

Description

technical field [0001] The invention relates to the technical field of optical precision measurement, in particular to a method for sampling the three-dimensional shape of a gear tooth surface, and in particular to a method for characterizing the three-dimensional shape of a gear tooth surface. Background technique [0002] Gear tooth surface shape error is an important precision index to evaluate the quality of gear manufacturing. At present, most gear measuring machines use the contact method to measure the shape error of the tooth surface. The method adopts a point-by-point measurement method, which has low measurement efficiency and may damage the measured surface, and it is difficult to make a breakthrough in the measurement accuracy. Therefore, in order to meet the needs of the development of modern industrial technology, research on non-contact measurement methods for gears is carried out. , to develop a non-contact gear rapid measurement device to replace the existi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24
CPCG01B11/2416
Inventor 杜虎兵张少锋王建华陈晓东王晓丽卢春霞孙彬
Owner XIAN TECHNOLOGICAL UNIV
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