A cutting fixture and method

CN117260486BActive Publication Date: 2026-05-26XIAN THERMAL POWER RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN THERMAL POWER RES INST CO LTD
Filing Date
2023-10-16
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In the existing technology, when manually cutting the blade roots of gas turbine compressor blades with a handheld angle grinder, it is easy to accidentally damage the rotor disc, consume a large number of blades, pose safety hazards, and have low efficiency.

Method used

The cutting fixture consists of a support module, a guide module, and a cutting module. The support module is positioned on the wheel, the guide module moves along the wheel axis, and the cutting module performs axial cutting through the guide module. Combined with the angle grinder drive assembly and protective cover, precise and controllable cutting is achieved.

Benefits of technology

It achieves safe, efficient, and precise blade root cutting, avoiding damage to the wheel and blade consumption, and reducing the risk and labor intensity for operators.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117260486B_ABST
Patent Text Reader

Abstract

This invention discloses a cutting fixture and method applied to the removal of compressor moving blades in a gas turbine. The cutting fixture includes: a support module positioned on the compressor disc, the support module having a hollow groove suitable for the compressor moving blade to pass through, with a gap between the hollow groove and the compressor moving blade; a guide module disposed on the support module, suitable for moving axially along the compressor disc; and a cutting module disposed on the guide module, having a cutting end positioned directly above the gap during cutting, suitable for axial cutting along the compressor disc via the guide module. The support module of this invention positions the cutting module, eliminating the need for operators to hold an angle grinder. The guide module provides linear guidance for the cutting module, ensuring that the cutting groove cuts linearly along the compressor disc axis, preventing the cutting angle from wobbling due to unstable handling and avoiding accidental damage to the compressor disc.
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