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Method and device for simultaneously detecting surface shapes and thickness distribution of inner wall and outer wall of thin-wall rotary body

A technology of thin-wall rotation and thickness distribution, applied in the field of precision measurement, to achieve the effect of ensuring measurement accuracy and coordinate consistency

Active Publication Date: 2022-05-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention drives the spectrum confocal measuring head to perform profiling scanning on the thin-walled shell type rotary body through the linkage of two turntables and a linear motion axis, which can overcome the high aspect ratio, high aspect ratio and large For the detection of complex features such as steepness, combined with the multi-surface measurement capability of the spectral confocal probe, a one-time scanning detection of the surface shape and thickness distribution of the inner and outer walls of the thin-walled shell type rotary body can be realized through a single, single-side scan, with high Versatility, high measurement efficiency and high measurement accuracy

Method used

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  • Method and device for simultaneously detecting surface shapes and thickness distribution of inner wall and outer wall of thin-wall rotary body

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Embodiment Construction

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0047] The present invention proposes a measuring device and method based on a sensor capable of measuring multiple surfaces such as a spectral confocal probe to realize the surface shape and thickness distribution of the inner and outer walls of a thin-walled shell. The axis drives the spectral confocal probe to perform profiling scanning motion along the surface of the thin-walled shell, and the single-sided thickness measurement avoids the mechanical interference problem of the through-beam thickness measurement, and simultaneously collects the thin-walled shell during the scanning process. The position and thickness information of the inner and outer walls in the body can ensure the consistency of the coordinates of the detection data in space, so as to realize the high-precision and rapid detection of the shape and thickness distribution of the inner and ...

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Abstract

The invention discloses a method and a device for simultaneously detecting surface shapes and thickness distribution of inner and outer walls of a thin-wall rotating body. The spectrum confocal measuring head (10) is driven by the bottom rotary table (18), the main measuring head rotary table (11) and the linear motion shaft mover (16) to perform profiling scanning along the surface of the thin-wall shell type rotary body (5), so that the detection of the surface shapes and thickness distribution of the inner wall and the outer wall of the thin-wall shell type rotary body (5) can be realized at one time; mechanical interference caused by arranging a measuring head in the thin-wall shell type rotary body (5) can be avoided, and coordinate consistency of surface shape measurement data of the inner wall and the outer wall and thickness distribution data in a three-dimensional space can be guaranteed, so that the overall measurement precision is guaranteed; and meanwhile, the method can be suitable for detecting different types of thin-wall shell type revolved bodies (5) such as conformal fairings and hemispherical gyroscope harmonic oscillators, and a detection means with universality, high efficiency and high precision is provided for the manufacturing process of high-end devices of the type.

Description

technical field [0001] The invention relates to the technical field of precision measurement, in particular to a method and a device for simultaneously detecting the surface shape and thickness distribution of the inner and outer walls of a thin-walled rotary body. Background technique [0002] Thin-walled shells of revolution refer to shell-shaped rotationally symmetrical elements whose thickness is significantly smaller than their characteristic dimensions, such as conformal fairings and spherical fairings applied to aircraft such as missiles, and hemispherical gyro resonance used in inertial navigation of navigation equipment child and so on. This type of device has become the core optical device in the field of next-generation aerospace equipment and inertial navigation due to its excellent aerodynamic performance and functional accuracy. The shape, quality and thickness distribution uniformity of the inner and outer walls directly determine its operational performance. ...

Claims

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Application Information

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IPC IPC(8): G01B11/24G01B11/06G01B11/02G01B17/06
CPCG01B11/24G01B11/2441G01B11/06G01B11/02G01B17/06
Inventor 居冰峰张文浩杜慧林李畅
Owner ZHEJIANG UNIV
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