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Rotation axis determination method and system

A method for determining the axis of rotation, a technology for determining the axis of rotation, which is applied in complex mathematical operations, measuring devices, instruments, etc., and can solve problems such as the axis of rotation that remains to be discussed, the axis of rotation is different, and the stability of the algorithm is affected.

Active Publication Date: 2021-02-02
AECC SHANGHAI COMML AIRCRAFT ENGINE MFG CO LTD +1
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  • Abstract
  • Description
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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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  • Rotation axis determination method and system
  • Rotation axis determination method and system
  • Rotation axis determination method and system

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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 rotation axis determination method, which is used for determining the rotation axis of an engine rotor, the engine rotor comprises two journals which are aligned and assembledon turntable equipment, and the method comprises the following steps of: establishing a cylindrical coordinate system and a Cartesian coordinate system on the turntable equipment; based on the cylindrical coordinate system, acquiring bounce data of a plurality of sections on the supporting cylindrical surface of each journal, wherein the bounce data comprises bounce values, angular phases and z-direction index values of the data acquisition points; converting the runout data of each journal into coordinate data relative to a Cartesian coordinate system in combination with the size of the engine rotor; obtaining a linear vector of each journal according to the coordinate data of each journal by utilizing a spiral theory and combining a cylindrical surface fitting method; and in combinationwith the gravity center distribution and the supporting range of the supporting cylindrical surface of each journal, coupling the linear vectors of the two journals, and obtaining the rotating axis of the engine rotor. The determination method can improve the determination precision 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 Applications(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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