A hydraulic drive type multi-point auxiliary support clamp for numerical control machining of a wind power pin shaft

By using a hydraulically driven multi-point auxiliary support fixture, the supporting force is amplified by the use of annular oil channels and inclined wedge transmission mechanisms. Combined with ball joint and buffer spring design, the problems of insufficient rigidity and surface damage in the processing of wind turbine pin shafts are solved, achieving high-precision and high-efficiency production results.

CN122184875BActive Publication Date: 2026-07-21JIANGSU NEW BEST INTELLIGENT MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU NEW BEST INTELLIGENT MFG CO LTD
Filing Date
2026-05-14
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing wind turbine pin machining fixtures lack rigidity, causing workpiece deformation and chattering, and easily damaging the surface. They are also unable to adapt to minute displacement changes due to thermal expansion of the pin.

Method used

The hydraulically driven multi-point auxiliary support fixture achieves synchronous amplification of the support force through an annular oil channel and a wedge transmission mechanism, and maintains stability by utilizing the self-locking characteristics of the wedge. Combined with the ball joint and buffer spring design, it adaptively compensates for the pin posture, transforms rotational friction into rolling friction, and adds a reset spring and guide structure to ensure accurate positioning.

Benefits of technology

It improves the rigidity and precision of wind turbine pin machining, avoids surface damage, adapts to thermal expansion changes, reduces frictional heat generation and noise, and improves production efficiency and equipment reliability.

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Abstract

The present application relates to the technical field of shaft machining fixture, in particular to a hydraulic drive type multi-point auxiliary support fixture for wind power pin shaft numerical control machining, which comprises a base, the base is annular, a ring-shaped oil channel coaxial with the base is arranged in the base, at least three groups of radial support units are arranged on the base, a plurality of radial support units are distributed in radial direction of the base at equal angles, and the inner side of the base is provided with the same number of piston holes as the radial support units. The present application realizes synchronous hydraulic drive of all radial support units through the ring-shaped oil channel, cooperates with the inclined wedge transmission mechanism, realizes mechanical amplification of the support force, uses the self-locking characteristics of the inclined wedge to ensure the stability of the support position under the vibration cutting working condition, effectively solves the deformation and flutter problems caused by insufficient rigidity during the machining of the large length-diameter ratio wind power pin shaft, and improves the machining precision and surface quality.
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