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Detection method of shrouded turbine disc

A detection method and turbine disk technology, which is applied to measuring devices, instruments, etc., can solve problems such as the inability to detect finished crowned turbine disks

Active Publication Date: 2020-12-18
SHANXI PINGYANG IND MACHINERY
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  • Abstract
  • Description
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Problems solved by technology

[0004] The invention aims to solve the technical problem that the finished crowned turbine disk cannot be detected in the prior art

Method used

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  • Detection method of shrouded turbine disc
  • Detection method of shrouded turbine disc
  • Detection method of shrouded turbine disc

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0028] The tested crowned turbine disk has 72 blades evenly distributed along the circumference, and the outer edge of the blades is surrounded by crowns. The diameter of the outer circle of the crown is 180 mm, and the minimum gap between the blades is 1.9 mm. The shape deviation and position of the blades are detected by the method of the present invention deviation, the specific steps are as follows:

[0029] S1: Establish a five-axis four-linkage measuring machine, including a worktable 1, an X-direction sliding mechanism 2 is provided on the worktable 1, a Y-direction...

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Abstract

The invention relates to the related technical field of shrouded turbine discs, in particular to a detection method of a shrouded turbine disc, and aims to solve the technical problem that a finishedshrouded turbine disc cannot be detected in the prior art. The technical scheme is that a first numerical control rotary table and a second numerical control rotary table are additionally arranged onan existing three-coordinate measuring machine, and the lower end of a measuring needle is bent to form a bent measuring needle, so the shrouded turbine disc is detected in the axial direction; compared with an existing method that a crown is cut off and then detected through a traditional three-coordinate measuring machine or a blade is cut into slices in the section direction and then detected through a projection method, detection of the blade can be completed on the basis that the structure of the shrouded turbine disc is not damaged, and the method is suitable for the process test stage,and is also suitable for detection of the shrouded turbine disc in a finished product stage.

Description

technical field [0001] The invention relates to the related technical field of crowned turbine disks, in particular to a detection method of crowned turbine disks. Background technique [0002] turbine discs (such as figure 1 ) is a typical disc-like part. Its basic structure is that a number of turbine blades with special curved surfaces are evenly distributed along the circumference of the outer circle of the hub. When working, high-temperature and high-pressure gas is sprayed onto the surface of the blades to drive the turbine to rotate at high speed to generate power. , is one of the core components of the turbine engine. The shape accuracy of the blade surface on the turbine disk and the axial and circumferential position accuracy of the blade distribution are very high, requiring precise detection. This detection is usually carried out on a three-coordinate measuring machine. During detection, the stylus enters and exits the blade from the radial direction. gap betwe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/20G01B21/00
CPCG01B21/20G01B21/00
Inventor 张栋郑秋忠耿小强
Owner SHANXI PINGYANG IND MACHINERY
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