Self-inspection tooling and self-inspection method of blade measuring instrument
A measuring instrument and blade technology, which is applied in the field of blade measuring instrument self-inspection tooling, can solve problems such as inability to accurately measure whether the blade profile meets the requirements, engine performance is not up to standard, safety accidents, etc., so as to facilitate frequent self-inspection and simple structure , the effect of simple operation
Active Publication Date: 2019-04-26
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
[0003] The invention provides a blade measuring instrument self-inspection tooling and a self-inspection method to solve the problem that the existing blade measuring instrument cannot accurately measure whether the blade profile meets the requirements due to the fact that the wear of the measuring ball is out of tolerance. Engine performance is not up to standard, and even technical problems that cause safety accidents
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[0026] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0027] refer to figure 1 , figure 2 , Figure 5 and Figure 6, the preferred embodiment of the present invention provides a blade measuring instrument self-checking tool, wherein, the blade measuring instrument is used to measure the section curves of different heights on the blade, and the blade measuring instrument includes a measurement system and a level for recording measurement data. And the two measuring heads 10 that are arranged oppositely, the ends of each measuring head 10 are provided with measuring balls 11, and the self-inspection tooling of the blade measuring instrument is used for self-inspecting whether the wear distance of the measuring balls 11 is within the allowable range, which includes: supported on The reference base 20 ...
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The invention discloses a self-inspection tool and method for a blade measuring instrument. The blade measuring instrument comprises a measurement system for recording measurement data, and two measuring heads. An end part of each measuring head is provided with a measuring ball. The tool comprises a reference pedestal which is supported by a detection table, and the reference pedestal is vertically provided with two installation columns. The installation columns are respectively provided with a standard cylinder in a vertical manner, wherein the standard cylinders are used for the self-inspection whether the wear degrees of the measuring balls exceed a permissible range or not. The measurement system drives the two measuring balls to contact with the excircles of the standard cylinders, and to respectively rotate through a half circle along the peripheral lines of the standard cylinders, so as to obtain a measurement circular curve and to judge whether the wear degrees of the measuring balls exceed the permissible range or not according to the measurement circular curve. The tool provided by the invention can carry out the self-inspection whether the wear degrees of the measuring balls of the blade measuring instrument exceed the permissible range or not, and avoids a safety accident caused by a problem whether the profile of a blade meets with the requirements or not cannot be accurately determined because a measuring ball with the wear exceeding the permissible range continues to be used.
Description
technical field [0001] The invention relates to the field of measurement of aeroengine blades, in particular to a self-inspection tool for a blade measuring instrument. In addition, the present invention also relates to a self-inspection method using the self-inspection tool and self-inspection blade measuring instrument. Background technique [0002] A single aero-engine has hundreds of blades, and the blade shape has a great influence on the performance of the engine. Therefore, each blade needs to measure multiple cross-sectional curves to ensure the blade shape size. The blade measuring instrument is used very frequently. During the measurement, the measuring ball of the blade measuring instrument slides on the surface of the blade to read the data. The wear of the measuring ball and the deviation of the installation height of the measuring head directly affect the measurement accuracy of the blade profile. At present, there is no special calibration tool to calibrate t...
Claims
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IPC IPC(8): G01B5/20
CPCG01B5/205
Inventor 唐双双侯正乾胡玥贺峥嵘李振锋张丽刘斌
Owner CHINA HANGFA SOUTH IND CO LTD