Inner spline large diameter centering expansion sleeve

By designing an arc-shaped triangular tooth structure and an internal spline centering expansion sleeve made of rubber material, the problem of insufficient centering accuracy of the flange's large diameter was solved, achieving high-precision flange processing, which is suitable for flanges of various sizes.

CN224359387UActive Publication Date: 2026-06-16SHAANXI FAST AUTO DRIVE GRP CO LTD
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHAANXI FAST AUTO DRIVE GRP CO LTD
Filing Date
2025-05-27
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

In the existing technology, the internal spline machining of flanges is difficult to meet the accuracy requirements of the design scheme based on large diameter centering, and conventional expansion sleeves cannot effectively achieve large diameter centering.

⚗Method used

A centering expansion sleeve with an internal spline is designed. It adopts an arc-top triangular tooth structure, with the tooth tip contacting the large diameter of the internal spline of the flange. The tooth groove is protected by a sharpened inner arc surface. Combined with rubber material and an integrated semi-cut structure, the elasticity and precision of the expansion sleeve are ensured.

🎯Benefits of technology

It achieves high-precision large-diameter centering machining of flanges, avoids misalignment of expansion sleeves, is applicable to flanges of various sizes, and improves machining accuracy and applicability.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The utility model discloses a kind of inner spline large diameter centering expansion sleeve, including large diameter expansion sleeve outer gear;Large diameter expansion sleeve outer gear includes arc top triangular tooth body, the tooth top of arc top triangular tooth body can be contacted with the inner spline large diameter of flange plate to realize large diameter centering.The tooth top left and right sides of arc top triangular tooth body are also provided with sharp inside arc surface respectively.Smooth transition between sharp inside arc surface and tooth top, smooth transition between sharp inside arc surface and tooth surface.The large diameter expansion sleeve outer gear in the device of the utility model adopts arc top triangular tooth shape, can effectively guarantee that expansion sleeve is expanded to the large diameter of the inner spline tooth of flange plate, realize the clamping processing of flange plate with inner spline tooth large diameter centering as design scheme;Meanwhile, the tooth top left and right sides of arc top triangular tooth are also provided with sharp inside arc surface, while guaranteeing the tooth groove fillet of the inner spline tooth of flange plate during clamping, effectively avoid that expansion top misplacement to the inner spline large diameter of flange plate when installing, further guarantee processing precision.
Need to check novelty before this filing date? Find Prior Art