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A method for determining the measurement area of ​​a displacement mechanism

A technology for measuring areas and determining methods, which is applied in mechanical measuring devices, measuring devices, and mechanical devices, etc., can solve problems such as large errors and difficulty in extending the length of lateral limit rods, and achieves easy operation, high application prospects and high application prospects. The effect of promoting value and improving accuracy

Active Publication Date: 2019-02-05
AECC SHENYANG ENGINE RES INST
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for determining the measurement area of ​​the shifting mechanism, which solves the difficulty of manually measuring the extension length of the radial and lateral limit rods on the shifting mechanism under the premise of being limited by the structure and space. , the problem of large error

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  • A method for determining the measurement area of ​​a displacement mechanism

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Embodiment Construction

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail b...

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Abstract

The invention relates to a shift mechanism measurement area determination method. The method comprises the following steps of step1, determining data of a required measurement area, wherein the data includes a tangential measurement length L and a radial measurement height H; step2, determining the area of the tangential measurement length L of a shift mechanism; and step3, determining the area of the radial measurement height H of the shift mechanism. By using the shift mechanism measurement area determination method, operation is simple, manual measurement is not needed, precision is increased and safety is ensured. The method can be used in all the blade machine tests where the shift mechanism carries out flow field shift measurement, wherein the blade machine tests are used in an aviation engine component test. The method possesses a high application prospect and a popularization value.

Description

technical field [0001] The invention belongs to the field of aero-engine blade machine testing, and in particular relates to a method for determining a measurement area of ​​a displacement mechanism. Background technique [0002] The displacement mechanism is a special test equipment often used in the test of aero-engine blades (including plane cascades, fan cascades, compressor performance tests, turbine performance tests, etc.), used to drive displacement probes (such as spherical and conical five-hole needle) for detailed measurements of the flow field. At present, the displacement mechanism of Rotadata Company in the United Kingdom is commonly used. The resolution of tangential and radial displacement is 0.01mm, and the accuracy is ±0.05mm. At present, the conventional method of determining the measurement area of ​​the shifting mechanism is to manually measure and adjust the extension length of the limit rod; due to structural and space constraints, the operation is di...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/00G01B5/02
CPCG01B5/003G01B5/02
Inventor 马永峰
Owner AECC SHENYANG ENGINE RES INST
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