Laminated Block Groove Detection for Correct Iron Core Assembly
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Solution Overview
Problem
Laminated iron cores in rotating electric machines can be erroneously coupled due to incorrect orientation or lamination order of laminated blocks, leading to defective products.
Innovation Solution
A method to determine the correctness of laminated blocks by detecting the presence or absence of grooves on their outer circumferential surfaces and determining the correct lamination order based on groove positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If laminated blocks are laminated with different shapes to form a laminated iron core, then the laminated iron core can be manufactured with complex geometries, but erroneous coupling occurs due to incorrect orientation or lamination order
Solution Approach 1:
The patent applies preliminary action by forming grooves on the laminated blocks during the punching process before lamination. These grooves serve as pre-established identification features that enable subsequent verification of correct orientation and lamination order, preventing erroneous coupling while maintaining geometric complexity
Solution Approach 2:
The patent implements feedback by using detection means to verify the presence and position of grooves on laminated blocks during assembly. This feedback mechanism confirms correct orientation and lamination order, allowing immediate identification and correction of erroneous coupling before final assembly completion
2Reliability
If detection means are added to verify groove presence and position, then coupling accuracy improves, but device complexity increases
Solution Approach 1:
The patent uses grooves as an intermediary element between the laminated block and the detection means. The grooves serve as physical carriers of information that simplify the detection process, allowing the detection means to easily verify orientation and lamination order through simple presence and position detection rather than complex analysis
Solution Approach 2:
The patent applies copying by creating groove patterns on laminated blocks that replicate identification information from the punching process. These groove copies serve as durable, easily detectable representations of the block's identity and orientation requirements, enabling reliable verification without complex detection algorithms
Data Source
AI summary
Laminated blocks include a laminated block that has a groove formed on an outer circumferential surface of each laminated block and a laminated block that does not have the groove. A laminated block correctness determining method includes detecting presence or absence of the groove in the laminated block. The detecting presence or absence of the groove includes detecting a position of the groove when detecting the groove. The laminated block correctness determining method further includes determining whether a laminating order of the laminated blocks is correct from a detection result of the detecting presence or absence of the groove.