Long carbon fiber tube coupling for high-speed main shaft of machine tool

By adopting a carbon fiber tube coupling combined with threaded insertion and a linkage clutch mechanism, the problems of flexibility and stability of machine tool couplings have been solved, enabling flexible switching between single and dual axes, reducing weight and energy consumption, and improving transmission accuracy and stability.

CN122407698APending Publication Date: 2026-07-17KTR POWER TRANSMISSION TECHNOLOGY (SHANGHAI) CO LTD
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Patent Information

Application Number
CN202610609260.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing machine tool couplings cannot flexibly switch between single and dual-axis linkage, are inflexible in use, heavy, consume a lot of energy, are difficult to operate stably at high speeds, and pose safety hazards.

Method used

Using carbon fiber tubes as the main structure, combined with threaded connection and linkage clutch mechanism, it realizes the switching between single and dual shaft linkage mode. Through rigid diaphragm and precision bolt connection, it reduces weight and energy consumption and improves transmission stability.

Benefits of technology

It enables flexible switching of the machine tool spindle linkage mode, reduces equipment weight and energy consumption, improves transmission accuracy and operational stability, and reduces the failure rate.

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Abstract

The invention relates to a long carbon fiber tube coupling for a high-speed spindle of a machine tool. The coupler solves the problems that in the prior art, a coupler cannot conduct single-shaft and double-shaft flexible switching linkage, and stable operation at the high rotating speed is difficult to achieve. The carbon fiber coupling comprises coupling seats which are symmetrically arranged, one side of each coupling seat is connected with a linkage seat through a linkage connecting mechanism, the other side of each coupling seat is connected with a carbon fiber coupling outer pipe through a rigid connecting assembly, a coupling inner pipe assembly is arranged between the two coupling seats, and a supporting and positioning device is arranged on the circumferential inner side of the carbon fiber coupling outer pipe. A linkage clutch mechanism acting on the linkage inner pipe assembly is arranged between the coupling inner pipe assembly and the carbon fiber coupling outer pipe. The device has the advantages that the overall weight of equipment is effectively reduced, the operation energy consumption is reduced, and the structural stability of the equipment under the high-rotating-speed working condition is guaranteed; switching between a single-shaft linkage mode and a double-shaft linkage mode can be flexibly completed, and the defects that a traditional coupler is single in linkage mode and poor in use flexibility are overcome.
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