Laminated Iron Core Striped Pattern Skew Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for manufacturing laminated iron cores face challenges in identifying the source of iron core pieces, recognizing turned and laminated states, and detecting skew, which lead to issues like weight imbalance, limited machining methods, increased die manufacturing costs, and restricted machining techniques.
Innovation Solution
A laminated iron core design featuring specific light reflection areas on its side surfaces, created by varying the clearance between blanking tools to form distinct shearing and broken surfaces, allowing for easy identification of piece orientation and skew through visible striped patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If special machining work is applied to change the configuration of iron core pieces to identify rows or detect skew, then identification capability is improved, but weight balance deteriorates due to collapsed symmetrical property
Solution Approach 1:
The invention applies local quality by creating specific light reflection areas only in certain regions of the iron core pieces (e.g., specific circumferential positions or radial depths) rather than uniformly modifying the entire piece. This localized approach allows identification markings to be made without compromising the overall symmetrical weight distribution of the rotor assembly.
Solution Approach 2:
The invention uses asymmetry in the form of striped patterns with specific reflection characteristics that are asymmetrically positioned or oriented on the iron core pieces. These asymmetric light reflection features provide identification information while the asymmetric elements are designed to minimize impact on weight balance through careful positioning and dimensional control.
2Loss of information
If special machining work is applied to the outer peripheral part to identify rows, then identification capability is improved, but adaptability deteriorates for products where cut-out parts are not feasible
Solution Approach 1:
The invention provides multiple options for locating light reflection areas: on the outer peripheral part, on the inner peripheral part, or at different radial depths. This flexibility allows the identification method to be adapted to different product types and structural constraints, maintaining versatility across various motor and generator designs.
Solution Approach 2:
The invention extends identification capabilities to multiple spatial dimensions by allowing light reflection areas to be positioned not only on the outer peripheral surface but also on the inner peripheral surface and at various radial depths within the iron core piece, providing additional degrees of freedom for implementation.
3Loss of information
If blanking tools with special machining are used to create identification features, then identification capability is improved, but device complexity increases due to increased number of components
Solution Approach 1:
The invention merges the identification feature creation into the existing blanking tool structure by incorporating light reflection control elements (such as reflective coatings or geometric features) directly into the blanking punch or die, eliminating the need for separate identification marking operations or additional components.
Solution Approach 2:
The blanking tools are designed with multi-functionality, serving both the primary function of cutting and shaping iron core pieces and the secondary function of creating light reflection areas for identification. This is achieved through integrated design elements in the tooling that perform dual purposes.
4Loss of information
If blanking tools with cut-out parts are used for special machining, then identification capability is improved, but ease of manufacture deteriorates due to limited machining methods
Solution Approach 1:
The invention changes the parameters of the blanking tool by incorporating surface treatments (such as reflective coatings), geometric modifications (such as angled surfaces or grooves), or material selection that enhance light reflection properties without requiring complex cut-out features, thereby maintaining ease of manufacture through conventional tooling practices.
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 easy recognition of iron core piece origins and laminated states without altering the core configuration, reducing weight imbalance risks and simplifying machining processes while maintaining product quality.
Implementation Method 1
the specific light reflection area has different light reflection characteristics from the other area of the side part of the iron core piece
Data Source
AI summary
A laminated iron core includes a plurality of blanked iron core pieces laminated together, a continuity of side parts of the iron core pieces configuring a side surface of the laminated iron core. The side part of each iron core piece includes a specific light reflection area having a prescribed width along a circumferential direction, where the specific light reflection area has different light reflection characteristics from the other area of the side part of the iron core piece, and a striped pattern, configured by the specific light reflection areas, exists on the side surface of the laminated iron core.