Low-pressure turbine front lock nut groove visual alignment device and method

The low-pressure turbine front locking nut groove visual alignment device uses a vision system and displacement sensor to achieve automated alignment of the locking nut and the low-pressure turbine shaft groove, solving the problem of the groove not being visible in the deep well structure, and improving assembly efficiency and quality consistency.

CN122353285APending Publication Date: 2026-07-10西安西航商泰高新技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
西安西航商泰高新技术有限公司
Filing Date
2026-04-16
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

In existing technologies, the tightening and alignment of the locking nut in front of the low-pressure turbine relies on manual operation, resulting in low efficiency and unstable quality. This is especially true in deep-well structures where the slots are not visible, making it impossible to guarantee high-precision alignment.

Method used

A visual alignment device for the locking nut slot of the low-pressure turbine is adopted, which includes a tooling system, a vision system, a measurement system and an actuator. The vision system performs image acquisition and coarse positioning, the displacement sensor monitors the relative position change, and the actuator achieves precise alignment.

Benefits of technology

It achieves automated alignment of the locking nut and the low-pressure turbine shaft groove, improving assembly efficiency and quality consistency, eliminating reliance on operator experience, and ensuring the reliability and accuracy of each alignment result.

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Abstract

This invention relates to a visual alignment device and method for the locking nut slot of a low-pressure turbine, belonging to the field of engine component assembly technology. The device includes a measurement system, a vision system, a tooling system, an actuator, and a control system. The tooling system has a first and a second measuring rod that can rotate relative to each other and have an initial positional deviation, used to mate with the turbine shaft slot and the nut slot, respectively. The vision system is mounted on the second measuring rod to visualize the slot position, and a displacement sensor is mounted on the first measuring rod to detect changes in the relative position of the two measuring rods. Through coordination by the control system, the vision system first performs coarse positioning, then the actuator drives the measuring rod to contact the slot wall, and finally, during the tightening of the nut, the two measuring rods are guided to align based on feedback from the displacement sensor. This invention solves the problems of difficult, manual, and inefficient alignment of locking slots in blind cavity environments, automates the alignment process, and significantly improves assembly accuracy, efficiency, and quality consistency.
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