A sleeve expansion fixture and a cylinder machining fixture using the same

By designing the expansion sleeve fixture, the problem of existing fixtures being unable to complete multi-position machining on the same cylinder machining fixture is solved, ensuring the coaxiality of the cylinder and simplifying operation, thereby reducing production costs.

CN224333961UActive Publication Date: 2026-06-09SHANDONG SANJIN GLASS MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG SANJIN GLASS MASCH CO LTD
Filing Date
2026-04-28
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing fixtures are difficult to use for machining workpieces with complex structures, as they cannot complete machining at multiple positions on the same cylinder machining fixture. Furthermore, their complex structure increases the workload of workers and production costs.

Method used

The expansion sleeve fixture includes a tensioning part and a positioning post. The positioning post is provided with multiple first positioning protrusions. The tensioning part is composed of fan-shaped tensioning units, which can fix the cylinder from the inside and complete the processing of different positions on the same fixture through multiple fixing structures.

Benefits of technology

It enables multi-position machining of cylinders, ensures the coaxiality of holes and splines, has a simple structure, is easy to operate, and reduces the workload of workers and production costs.

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Abstract

A tensioning clamp and a cylinder machining clamp using the clamp belong to the field of machining clamping technology. It includes a tensioning part and a positioning post, with the tensioning part connected to the positioning post. The cylindrical tensioning part is located at the end of the positioning post. Multiple first positioning protrusions are spaced apart on the circumferential side of the positioning post. The tensioning part is composed of multiple fan-shaped tensioning units, spaced apart from adjacent tensioning units. The diameter of the clamping part is larger than the diameter of the positioning post. The tensioning part is located at the end of the positioning post, and the first positioning protrusions are engaged in the spline groove of the cylinder's central hole, effectively positioning the cylinder. Furthermore, by dividing the tensioning part into multiple spaced-apart tensioning units, the tensioning part becomes elastic, effectively fixing the cylinder from the inside, thereby completing the precision machining of the cylinder's end central hole and ensuring the coaxiality of the hole and the spline groove.
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