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Device and method for precise measurement of theoretical point of low pressure rotor profile

A low-pressure rotor, precision measurement technology, applied in the direction of measuring devices, mechanical measuring devices, mechanical diameter measurement, etc., can solve the problems of low efficiency, increased quality risk, inconvenient measurement, etc., to achieve convenient use, reduced quality cost, weight light effect

Active Publication Date: 2022-05-20
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, three-coordinate measurement was used to measure the theoretical point of low-pressure rotor profile processing. Although there is no problem with the measurement accuracy, it is inconvenient to measure and cannot be measured on the machine tool during part processing.
When measuring the theoretical point of a part, it is necessary to unload the part, measure it on a three-coordinate measuring machine, and then re-clamp, align, and continue processing after measurement, resulting in low efficiency and increased quality risks

Method used

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  • Device and method for precise measurement of theoretical point of low pressure rotor profile
  • Device and method for precise measurement of theoretical point of low pressure rotor profile
  • Device and method for precise measurement of theoretical point of low pressure rotor profile

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Embodiment

[0046] This embodiment takes the measurement of the theoretical point of the low-pressure rotor 17 profile of a small engine as an example to describe the precision measurement device and method for the theoretical point of the low-pressure rotor 17 profile, as figure 1 As shown, the end face 22 (i.e. the reference plane) of the low-pressure rotor 17 is a plane perpendicular to the axis, and the profile to be processed and measured is a tapered surface. The balance accuracy of the rotor 17, the engine assembly quality, performance, reliability and other important indicators, so the accuracy of the theoretical point size of the low-pressure rotor 17 profile is the key to ensuring the quality of this part.

[0047] Such as figure 1 As shown, the low-pressure rotor 17 is composed of a disk 23 (diameter ≥ 460mm) and a shaft 24 (part length ≥ 440mm), the disk 23 is composed of a hub and blades, and the two ends of the hub 22 are processed with profiles. The theoretical point is tha...

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Abstract

A device and method for precise measurement of theoretical points of a low-pressure rotor profile belong to the technical field of low-pressure rotor profile processing. The low-pressure rotor profile theoretical point precision measuring device includes a base and several theoretical point measuring tools arranged on the base, the base is provided with a V-shaped groove and a number of mounting holes, the theoretical point measuring tool includes a sleeve, the sleeve A measuring rod and a spring are arranged inside, a watch clip is arranged on the top of the sleeve, the watch clip is connected with the dial indicator, the stylus of the dial indicator is fixedly connected with the top of the spring, and a tangential clamping mechanism is arranged on the side of the sleeve; The precise measurement method of the theoretical point of the low-pressure rotor profile includes: S1, calibration; S2, measuring the actual value of the theoretical point of the low-pressure rotor profile through the low-pressure rotor profile theoretical point precision measuring device. The device and method for precise measurement of the theoretical point of the low-pressure rotor profile directly measure on the machine tool, improve the processing quality and measurement accuracy of the parts, and achieve cost reduction and efficiency increase.

Description

technical field [0001] The invention relates to the technical field of low-pressure rotor profile processing, in particular to a precision measuring device and method for a low-pressure rotor profile theoretical point. Background technique [0002] The low-pressure rotor is one of the important rotor parts of a small engine. The dimensional machining accuracy of this part directly affects the assembly quality, reliability and performance of the engine. In the past, the measurement of the theoretical points of the low-pressure rotor profile processing used three-coordinate measurement. Although there is no problem with the measurement accuracy, the measurement is inconvenient and cannot be carried out on the machine tool during the part processing. When measuring the theoretical point of a part, it is necessary to unload the part and measure it on a three-coordinate measuring machine, and then re-clamp, align, and continue processing after measurement, resulting in low effici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/20G01B5/00G01B5/08
CPCG01B5/20G01B5/003G01B5/08
Inventor 王洪斌关宁徐伟任加峰陈东阜
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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