A flexible clamping device and method for turbine blades

The bottom flexible support mechanism of the flexible clamping device and the pneumatically driven flexible clamping mechanism solve the deformation and precision problems during the turbine blade processing, and achieve stable clamping and high-precision processing of complex structure turbine blades.

CN119347498BActive Publication Date: 2025-09-23NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Application Number
CN202411479489.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-23
Publication Date
2025-09-23
Estimated Expiration
2044-10-23

AI Technical Summary

Technical Problem

Existing turbine blade clamping devices and methods have problems such as poor clamping effect, large processing deformation, and limited scope of application. In particular, it is difficult to ensure the processing accuracy of turbine blades with complex structures.

Method used

A flexible clamping device is used, including a bottom flexible support mechanism and a flexible clamping mechanism. Through pneumatic drive, multiple support pistons, upper pistons, lower pistons and side pistons are used to apply flexible clamping force to the turbine blades to achieve stable clamping of turbine blades with different structures.

Benefits of technology

It effectively controls the deformation of turbine blades during machining, improves machining accuracy and scope of application, solves the problems of large machining deformation and difficulty in ensuring surface quality, and is suitable for turbine blades of various structures.

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Abstract

The present invention discloses a flexible clamping device and clamping method for turbine blades, which relate to the field of turbine blade processing. The bottom flexible support mechanism includes a bottom base and a plurality of support pistons slidably mounted on the upper portion of the bottom base. The bottom base is used to connect to an inflation and deflation device. The flexible clamping mechanism includes a mounting bracket, an upper flexible clamping assembly, a lower flexible clamping assembly, and two side flexible clamping assemblies. The upper base, the lower base, and the two side bases are all used to connect to the inflation and deflation device. The bottom flexible support mechanism, the upper flexible clamping assembly, the lower flexible clamping assembly, and the side flexible clamping assemblies are all pneumatically driven. The plurality of support pistons, the plurality of upper pistons, the plurality of lower pistons, and the plurality of side pistons uniformly apply a flexible clamping force to the turbine blades, effectively controlling deformation generated during the turbine blade processing process. The mechanism is applicable to turbine blades with different structures, thereby increasing the scope of application.
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Citation Information

Patent Citations

  • Tool for high-speed numerical control milling machining of thin-walled part

    CN111390617A

  • Pneumatic clamping and positioning indexing device

    CN117921406A