Mokumegane Ring Manufacturing via Laminated Metal Plate Twisting
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Solution Overview
Problem
The manufacturing process for pair rings and pendants using the mokumegane technique lacks systematic management, making it difficult to increase the number of manufacturers and produced items, as each craftsman relies on experience rather than a standardized method.
Innovation Solution
A ring manufacturing method involving laminating multiple metal plates with different qualities, heating and twisting them to form an angle stick shape, creating longitudinal slits, and cutting to produce two rings with consistent feature patterns, along with a ring manufacturing apparatus to facilitate these steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If each craftsman manufactures based on experience without systematic management, then individual craftsmanship quality may be maintained, but the number of manufacturers and produced items cannot be increased
Solution Approach 1:
The manufacturing process is divided into distinct sequential steps: lamination step (laminating metal plates), junction step (jointing by heating and pressurizing), twisting step (heating and twisting), angle stick processing step (forming angle stick shape), slit formation step (forming longitudinal slits), ring formation step (opening slits to make ring components), and cutting step (separating into two rings). This segmentation allows each step to be standardized and replicated, enabling systematic management and increased production without sacrificing quality
Solution Approach 2:
The patent specifies precise parameter ranges for each processing step, including temperature ranges for heating (e.g., heating to a temperature sufficient to join the metal plates), pressure conditions for jointing, and dimensional specifications for the angle stick shape. By controlling these parameters systematically, the process can be replicated by multiple manufacturers with consistent results, increasing both the number of manufacturers and produced items
2Manufacturing precision
If common feature patterns are formed on pair rings and pendants, then design consistency is achieved, but the complexity of managing the manufacturing process increases
Solution Approach 1:
The feature patterns are formed during the twisting step, which occurs early in the process after lamination and junction but before the final cutting step. By forming the patterns preliminarily on the laminated structure, the design consistency is established early, and subsequent steps merely replicate and separate the patterns rather than creating them de novo, reducing the complexity of managing pattern consistency across multiple products
Solution Approach 2:
The same laminated metal plate structure serves multiple functions: it provides the base material for the rings, carries the feature patterns through the twisting process, and is subsequently divided to create matching pairs. The angle stick shape formed in the angle stick processing step serves as a universal intermediate form from which multiple ring components can be derived, simplifying the management of design consistency across different final products
3Reliability
If systematic production methods are implemented, then consistency and quality are improved, but the initial setup and process standardization requirements increase
Solution Approach 1:
The lamination and junction steps create a self-contained laminated metal plate structure that inherently maintains its integrity through subsequent processing steps. The twisting step naturally forms the feature patterns through the physical properties of the laminated structure itself, and the cutting step simply separates pre-formed components. This self-service characteristic reduces the need for complex external control mechanisms, making the systematic process easier to implement while maintaining high reliability
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
This method allows for systematic production of metal objects with common feature patterns, ensuring consistency across different ring sizes and reducing the likelihood of defective products, thereby enabling more manufacturers to produce high-quality, identical designs.
Implementation Method 1
a junction step jointing the plurality of metal plates by heating and giving pressure
Implementation Method 2
a junction step jointing the plurality of metal plates by heating and giving pressure
Implementation Method 3
a twisting step heating and twisting the plurality of metal plates after the junction step
Implementation Method 4
a twisting step heating and twisting the plurality of metal plates after the junction step
Data Source
AI summary
A ring manufacturing method of the present invention includes: a laminating step laminating a plurality of metal plates; a junction step jointing the plurality of metal plates by heating and giving pressure; a twisting step heating and twisting the plurality of metal plates after the junction step, an angle stick processing step performing twist processing to the plurality of metal plates to make angle stick shape, a slit formation step forming two longitudinal slits in angle stick component, a ring formation step opening the slits from inside thereof to make two ring components, and a cutting step cutting and separating the two ring components into two rings.