A positioning mechanism for a semi-circular positioning hole part

By designing a positioning mechanism that includes a base, a reference surface support mechanism, and a clamping mechanism, the positioning problem of semi-circular positioning hole parts is solved, achieving precise constraint and rapid operation, eliminating inner wall gaps, and making it suitable for positioning and inspection of automotive parts.

CN117428704BActive Publication Date: 2026-06-09BAOLONG SALZGITTER (ANHUI) HYDROFORMING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BAOLONG SALZGITTER (ANHUI) HYDROFORMING CO LTD
Filing Date
2023-10-31
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing technologies cannot effectively constrain all degrees of freedom of semi-circular positioning hole parts, especially in the positioning and operation process, where there are problems such as poor reliability, large space requirements, and cumbersome operation.

Method used

The positioning mechanism includes a base, a reference surface support mechanism, a clamping mechanism, and a positioning pin. The reference surface support mechanism constrains the Z-axis movement, X-axis rotation, and Y-axis rotation of the part. The clamping mechanism uses the elastically connected positioning pin to eliminate the inner wall gap, and the hole spacing is quantified by a dial indicator.

Benefits of technology

It achieves precise positioning of semi-circular positioning hole parts, constrains all their degrees of freedom, has a simple structure, low cost, fast operation and small space requirements, and eliminates the gap between the positioning pin and the inner wall of the part.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117428704B_ABST
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Abstract

The application discloses a positioning mechanism for a semicircular positioning hole part and relates to the technical field of automobile parts. The positioning mechanism comprises a base, a reference surface supporting mechanism, a pressing mechanism and a positioning pin. The reference surface supporting mechanism forms a reference surface, and the reference surface can constrain Z-direction movement, X-direction rotation and Y-direction rotation of the semicircular positioning hole part. Two positioning pins are arranged on two pressing mechanisms respectively, and the two pressing mechanisms are arranged on the X-direction two sides of the base respectively. The pressing mechanism and the base are movably connected along the X-direction and elastically connected along the X-direction. The two positioning pins keep X-direction positions under the action of the two pressing mechanisms and can constrain Z-direction rotation, X-direction movement and Y-direction movement of the semicircular positioning hole part. The positioning mechanism can realize positioning of the semicircular positioning hole part and constrain all degrees of freedom of the semicircular positioning hole part, and precise positioning is realized.
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