Powder metallurgy mandrel

By setting a frustum guide section and a frustum transition section at the end of the powder metallurgy mandrel, the interference problem in the assembly process of the bushing and mandrel is solved, and the assembly efficiency of the powder metallurgy mold is improved.

CN224444586UActive Publication Date: 2026-07-03CHANGSHU HUADE POWDER METALLURGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGSHU HUADE POWDER METALLURGY CO LTD
Filing Date
2025-06-11
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

During the assembly of powder metallurgy molds, the precise fit between the bushing and the mandrel is prone to tilting or positional deviation, which can cause rigid interference between the mandrel and the edge of the bushing orifice, affecting assembly efficiency.

Method used

Design a powder metallurgy mandrel with a frustum guide section and a frustum transition section at the end. The side of the frustum guide section is arc-shaped, and the center of the arc is located on the end face of the main body of the mandrel. The radius of the arc is larger than the diameter of the mandrel, which is used to guide the bushing to be smoothly inserted.

Benefits of technology

The design of the frustum guide section reduces interference between the mandrel and the bushing orifice edge, thus improving the assembly efficiency of powder metallurgy molds.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224444586U_ABST
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Abstract

This utility model discloses a powder metallurgy mandrel, comprising a round bar body with a frustum-shaped guide section at its end. The frustum-shaped guide section is coaxially arranged with the round bar body, and the side of the frustum-shaped guide section is arc-shaped. The center of the arc is located on the plane of the end face of the round bar body, and the radius of the arc is larger than the diameter of the round bar body. The frustum-shaped guide section of this utility model can reduce interference between the mandrel end and the edge of the bushing orifice. In the event of bushing tilt or positional deviation, it can guide the bushing into the mandrel, thereby improving the assembly efficiency of powder metallurgy molds.
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