Minting Die Curvature Control via Ferrule Deformation
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Solution Overview
Problem
The existing process for manufacturing minting dies is purely empirical and does not allow for adjustments or variations in curvature without reiterating all production steps, making the process lengthy and expensive.
Innovation Solution
A device and method that allow for axial and radial plastic deformation of the minting die body during the punching process, using a ferrule with shaped regions that enable varying curvature without requiring re-manufacturing the original punch, by allowing the ferrule to be replaced to achieve different curvature degrees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the existing empirical process for manufacturing minting dies is used, then the curvature of the minting die can be controlled, but any modification requires repeating all four production steps from the original punch, making the process lengthy and expensive
Solution Approach 1:
The invention segments the curvature control function from the original punch to the ferrule. The ferrule is divided into three portions with shaped regions that independently control the curvature of the minting die body during punching, allowing curvature adjustment without modifying the original punch.
Solution Approach 2:
The curvature control function is extracted from the original punch manufacturing process and transferred to the ferrule component. This allows the curvature to be adjusted by changing the ferrule rather than re manufacturing the entire original punch, significantly reducing production time for curvature modifications.
2Manufacturing precision
If the original punch is re-manufactured to change curvature, then the desired curvature can be achieved, but the process becomes expensive and time-consuming
Solution Approach 1:
The ferrule is pre-configured with specific shaped regions that determine the curvature during the punching operation. This preliminary preparation of the ferrule allows curvature control to be achieved in a single punching step rather than requiring re-manufacturing of the original punch.
Solution Approach 2:
The curvature control function is copied from the original punch design to the ferrule component. The ferrule replicates the curvature control capability without requiring the complex original punch manufacturing process, enabling faster iterations.
3Adaptability or versatility
If the ferrule is designed with shaped regions allowing radial deformation, then curvature can be adjusted by ferrule replacement, but the device complexity increases
Solution Approach 1:
The ferrule is designed with local shaped regions (three portions with specific geometries) that create radial deformation zones. These localized features allow curvature control without making the entire ferrule complex, maintaining simplicity while achieving adaptability.
Solution Approach 2:
The invention introduces radial deformation as an additional dimension of control beyond the traditional axial punching. By shaping the ferrule to allow radial deformation, curvature control is achieved through a new deformation dimension without significantly complicating the device.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the production of minting dies with pre-established curvature at a higher rate and with a more economical and efficient process, eliminating the need to restart from the original punch manufacturing step.
Implementation Method 1
a plastic deformation of the material of such body, typically steel, is allowed, both in axial direction - that is in the punch motion and abutment direction - and in radial direction
Data Source
Figure 1~3
Figure 4~5
AI summary
A method for manufacturing a minting die suitable for the mintage of coins, medals and the like, comprising a step of punching of the body of the minting die being formed (200) by a reproducing punch (100), which body has an axial direction of development (L) and a radial face (201) substantially orthogonal to said axial direction, wherein in said punching step the reproducing punch abuts at the transversal face of the body of the minting die being formed to transfer upon said face an effigy, wherein in said punching step both an axial and radial deformation of the body of the minting die being formed is allowed so that the final curvature of the minting die is determined by such axial and radial deformation (Figure 4).