Laminated Stator Core Blank Identification via Unique Odd-Shaped Parts
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Solution Overview
Problem
Existing methods for manufacturing laminated cores require multiple punches and dies for forming identification marks, leading to device complexity and increased costs, and struggle to efficiently specify the cutting position of blank members during the manufacturing process.
Innovation Solution
The method involves blanking a metal sheet into multiple blank members with odd-shaped parts that have unique shapes or arrangements, allowing for identification without additional punches or dies, and enabling specification of cutting positions through existing tools, while also serving as welded or rotational lamination identifying features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple punches and dies are used to form identification marks on blank members, then the cutting position can be specified, but device complexity increases and manufacturing costs increase
Solution Approach 1:
The patent combines the identification mark formation function with the existing odd-shaped parts (protrusions and recesses) that are already present on the blank members for lamination purposes. By making the odd-shaped parts themselves serve as identification marks, the need for separate punches and dies is eliminated, reducing device complexity while maintaining cutting position identification capability
Solution Approach 2:
The odd-shaped parts on the blank members are given multiple functions: they serve both as lamination features (for stacking and alignment) and as identification marks (for specifying cutting positions). This multi-functionality eliminates the need for additional dedicated identification features, thereby reducing the number of required punches and dies
2Measurement precision
If multiple punches and dies are used to form identification marks, then blank member positions can be identified, but manufacturing costs increase
Solution Approach 1:
The patent merges the identification function with the existing odd-shaped parts structure. The protrusions and recesses that are already formed during blanking serve dual purposes: enabling lamination and providing position identification. This eliminates the need for additional manufacturing steps and tools, thereby reducing manufacturing costs
Solution Approach 2:
The blank members themselves provide the identification capability through their inherent odd-shaped parts. The structure of the blank members is designed to automatically serve as identification marks without requiring external marking devices or additional processing, making the system self-sufficient and cost-effective
Data Source
AI summary
A method of manufacturing a laminated stator core includes: blanking an electrical steel sheet at 1st to Nth (N is a natural number equal to or greater than 2) positions arranged in the width direction of the electrical steel sheet to form 1st to Nth blank members, and laminating the 1st to Nth blank members to form a laminated stator core. The shape or arrangement of at least one odd-shaped part of a plurality of odd-shaped parts in the kth (k is a natural number of 1 to N) blank member differs from the shape or arrangement of at least one odd-shaped part of a plurality of odd-shaped parts in the mth (m is a natural number of 1 to N and satisfying m≠k) blank member such that the shapes of given two blank members do not agree with each other.