Enhanced method and equipment of forging bow-shape conjointed rake
US10960451B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2018 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | May 5, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21K11/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
This application provides an enhanced method and equipment for forging bow-shape Conjointed rake with one-piece steel. The methods of the present application include: S1: heating the rectangular blank to target temperature; S2: stamping the rectangular blank to mold rake tooth with rake handle blank reserved at both sides, and conduct cutting at the shoulder; S3: horizontally forging and stamping the rake handle blanks at both sides respectively to columnar; S4: heating the rake handle blank locally, stretching the rake handle blank with roll forging machine to mold rake handle, and bending the rake handle back in reverse to the rake tooth; S5: bending the rake handle stretched out from the sides inward and forge the two ends of the rake handle together to form the main body of the bow-shape rake; S6: placing the main body of the bow-shape rake between the convex stamping equipment to stamp the rake tooth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.