Method and system for determining the axis of rotation

A technology of rotation axis and determination method, applied in instruments, complex mathematical operations, measurement devices, etc., can solve the problems of different rotation axes, affecting the stability of algorithms, and large differences.

Active Publication Date: 2021-03-26
AECC SHANGHAI COMML AIRCRAFT ENGINE MFG CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the selected measurement sections are different, and the obtained rotation axes are different and have large differences, which will directly affect the stability of the algorithm itself, and the obtained rotation axes are also open to discussion

Method used

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  • Method and system for determining the axis of rotation
  • Method and system for determining the axis of rotation
  • Method and system for determining the axis of rotation

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings. In the following description, more details are set forth in order to fully understand the present invention, but the present invention can obviously be implemented in a variety of other ways different from this description, Those skilled in the art can make similar promotions and deductions based on actual application situations without violating the connotation of the present invention, so the content of this specific implementation manner should not limit the protection scope of the present invention.

[0030] The present invention provides a method for determining the rotation axis, which can determine the rotation axis of the engine rotor 10 . The engine rotor 10 comprises two journals fitted in alignment on a turntable device (not shown). figure 1 , the two journals consist of the front journal 1 and the rear journal 2. Each journal has a suppo...

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Abstract

The invention provides a method for determining the axis of rotation, which is used to determine the axis of rotation of the engine rotor. The engine rotor includes two journals that are aligned and assembled on the turntable equipment. The determination method includes: establishing a cylindrical coordinate system on the turntable equipment and Cartesian coordinate system; based on the cylindrical coordinate system, the runout data of multiple sections on the support cylinder of each journal are obtained, and the runout data includes the runout value, angular phase and z-direction index value of each data collection point; combined The size of the engine rotor, convert the runout data of each journal into the coordinate data relative to the Cartesian coordinate system; use the spiral theory and combine the cylinder fitting method, according to the coordinate data of each journal, get the coordinate data of each journal line vector; and, combining the distribution of the center of gravity and the support range of the support cylinder of each journal, the line vectors of the two journals are coupled to obtain the rotation axis of the engine rotor. The determination method described above can improve the determination accuracy of the rotation axis of the engine rotor.

Description

technical field [0001] The present invention relates to a method for determining the axis of rotation, which can determine the axis of rotation of an engine rotor including aligning two journals assembled on a turntable device, and also relates to a system for determining the axis of rotation. Background technique [0002] As a very important link, the engine assembly process has a direct impact on product reliability. Taking the engine rotor assembly as an example, it is very important to ensure that the coaxiality meets the requirements after assembly, so it is very critical to obtain the theoretical axis of engine rotation from the engine rotor beating. At present, the method of obtaining the center of rotation or the axis of rotation is the eccentric axis method used by Axiam Company. The eccentricity is obtained by measuring the radial runout of the front and rear journals as the front and rear references of the rotor. The eccentricity is obtained by connecting two ecce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/15G06F17/16G01B21/24
CPCG01B5/003G01B21/24G06F17/15G06F17/16
Inventor 范明争苏巧灵汤福龙郑恒
Owner AECC SHANGHAI COMML AIRCRAFT ENGINE MFG CO LTD
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