Cold heading forming die suite of double-flat-position rivet
By processing double-flat rivets through multiple cold heading die sets, the problem of low production efficiency is solved, high-precision and efficient production is achieved, and raw material utilization and structural strength are improved.
CN223455032UActive Publication Date: 2025-10-21SHANGHAI HUAAN AUTOMOBILE COMPONENT CO LTD
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Patent Information
- Application Number
- CN202422971636.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Technical Problem
Double-flat rivets have low efficiency during the production and processing process. The existing technology uses cold heading to process the cylindrical structure and then requires additional turning process to form a flat double-flat structure, resulting in reduced production efficiency.
Method used
A cold heading forming die set including a first die, a second die and a third die is used to form double flat rivets through multiple cold heading processes, avoiding the re-turning process and improving production efficiency and precision.
Benefits of technology
It achieves efficient production of high-precision double-flat rivets, reduces deformation and springback, improves raw material utilization and structural strength, and reduces costs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN223455032U_ABST
Abstract
The utility model relates to the technical field of cold forging machining, discloses a cold heading forming die suite of a double-flat-position rivet, and aims to solve the problem that the efficiency of the double-flat-position rivet is low in the production and machining process. A first die of the cold heading forming die suite comprises a first inner die and a first stamping part. The first inner die comprises a first counter bore and a first flat hole which are sequentially formed in the first linear direction, the first counter bore communicates with the first flat hole, and two opposite plane inner walls are arranged in the first flat hole in the radial direction. The first stamping part is matched with the first inner die in a stamping mode and used for conducting stamping in the first flat position hole and the first counter bore and forming a first preformed part. A second stamping part of the second die is matched with the second inner die in a stamping mode and used for machining the first preformed part into a second preformed part. A third stamping part of the third die is matched with the third inner die in a stamping mode and used for machining the second preformed part into the double-flat-position rivet. Therefore, the cold heading machining precision and machining efficiency of the double-flat-position rivet are improved.
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