Static balancing adjusting method for cast type blisk

An adjustment method, the technology of the whole blisk, applied in the static/dynamic balance test, the supporting element of the blade, the measuring device, etc., can solve the problems of low reliability, small range, complex structure, etc., and achieve high reliability and operation Simple, high-balanced precision effects

Active Publication Date: 2010-09-15
CHINA GAS TURBINE ESTAB
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] Purpose of the present invention: In order to solve the problems of the existing cast-type integral blisk static balance adjustment method with small range, complex structure and l

Method used

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  • Static balancing adjusting method for cast type blisk
  • Static balancing adjusting method for cast type blisk
  • Static balancing adjusting method for cast type blisk

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Embodiment Construction

[0017] The present invention will be described in further detail below by means of specific embodiments:

[0018] see figure 1 , which is a structural schematic diagram of the blisk in the method for adjusting the static balance of the cast blisk according to the present invention. The blisk is composed of a blade 1 and a disc 3, wherein a balance removal belt 2 is provided at the place where the disc 3 is connected to the blade 1 . The balance strip 2 is a ring of protrusions surrounding the blisk, used for grinding and stripping to adjust the balance.

[0019] According to the principle of balance, if the center of gravity of the blisk does not coincide with the center of rotation, an eccentricity will occur. At this time, when the blisk rotates at a high speed, it will cause large vibrations. When the actual cast-type blisk is just cast, it is easy to have uneven mass distribution among the blades, so there is a serious imbalance. The method for adjusting the static bala...

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PUM

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Abstract

The invention discloses a static balancing adjusting method for a cast type blisk. The static balancing adjusting method for the cast type blisk comprises the following steps of: firstly, machining a basic hole at the center of the disk during the primary pretreatment to the blisk; then measuring the primary unbalance of the bilsk by the basic hole and calculating the eccentric distance of the blisk according to the primary unbalance and weight of the bilsk; after that, fixing the blisk then adjusting rotation center of the disk by performing hole expansion to the basic hole according to the eccentric distance to make the rotation center of the basic hole coincide with the center of gravity thereof; then performing fine machining to the bilsk taking the adjusted basic hole as benchmark; and finally, grinding a balancing discharging belt to fulfill the requirement of static balancing. The static balancing adjusting method for the cast type blisk can get rid of relatively serious unbalance caused by uneven distribution of blade weight during casting. The method is simple and easy to implement and the precision requirement to casting is low. Characteristics such as simple structure and high reliability of blisk are reserved.

Description

technical field [0001] The invention relates to a method for adjusting the static balance of a casting type integral blisk. Background technique [0002] Due to the limitation of the casting process, the cast-type integral blisk is likely to cause uneven distribution of blade mass, so that the center of gravity and the center of rotation of the blisk do not coincide, and there is an eccentricity. When the blisk rotates at a high speed, it will cause large vibrations, which is prone to accidents. Therefore, it is very difficult to balance the cast blisk. In order to meet the actual use requirements, it is generally necessary to improve the casting precision of the cast blisk. [0003] In the prior art, the dynamic balance adjustment of the casting type integral blisk of the engine generally adopts the method of removing material or adding counterweight to balance to meet the balance requirement. However, the simple method of removing materials has a small adjustment range, ...

Claims

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Application Information

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IPC IPC(8): G01M1/38G01M1/34F01D5/34
Inventor 贺进
Owner CHINA GAS TURBINE ESTAB
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