Magnet Restraining Tool for Rotary Electric Machine Lamination
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Solution Overview
Problem
The existing magnet restraining tools for laminating and bonding magnet segments in rotary electric machines are complex, costly, and cumbersome to maintain due to the need for independent pressing members in multiple directions, leading to increased equipment investment and cumbersome dimension inspection processes.
Innovation Solution
A simplified magnet restraining tool with a box-shaped housing that allows magnet segments to be simultaneously restrained in the width, thickness, and longitudinal directions using a lid with weight and tapered parts, eliminating the need for separate pressing members and reducing the complexity of the tool structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If independent pressing members are provided in width, thickness and longitudinal directions to restrain magnet segments, then magnet segments can be properly restrained and bonded, but tool structure becomes complicated and manufacturing cost increases
Solution Approach 1:
The patent combines multiple pressing functions into a single integrated pressing member that can apply restraining forces in width, thickness, and longitudinal directions simultaneously. This merging of functions eliminates the need for separate pressing members for each direction, simplifying the tool structure while maintaining the ability to properly restrain magnet segments during bonding.
Solution Approach 2:
The pressing member is designed with multi-functionality to perform restraining operations in multiple directions (width, thickness, and longitudinal directions) through a single component. This universal design allows one pressing member to replace what would traditionally require three separate pressing members, reducing tool complexity while ensuring proper magnet segment restraint.
2Manufacturing precision
If independent pressing members are provided in multiple directions, then magnet segments can be restrained accurately, but manufacturing cost and equipment investment increase
Solution Approach 1:
The patent merges multiple pressing functions into a single integrated pressing member, reducing the total number of components that need to be manufactured and assembled. This consolidation lowers manufacturing costs and equipment investment while maintaining the precision required for restraining magnet segments in multiple directions through the unified pressing member's design.
3Reliability
If pressing members are provided for restraining operations in each direction, then magnet segments can be properly restrained, but maintenance becomes cumbersome
Solution Approach 1:
The patent combines multiple pressing functions into a single integrated pressing member, which simplifies maintenance compared to having three separate pressing members. The unified structure reduces the number of parts that need inspection, adjustment, and repair, making maintenance less cumbersome while preserving the full restraining capability in width, thickness, and longitudinal directions.
4Manufacturing precision
If a complex tool structure with multiple pressing members is used, then magnet segments can be restrained in all directions, but investment in equipment increases
Solution Approach 1:
The pressing member is designed with multi-functionality to provide comprehensive directional restraint (width, thickness, and longitudinal directions) through a single component. This universal design achieves the same restraining capability as multiple separate pressing members would provide, but with reduced equipment complexity and lower investment requirements.
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
The tool simplifies the manufacturing process, reduces costs, and ensures accurate dimensioning within specifications without the need for additional drive sources, facilitating easier maintenance and inspection, while preventing adhesive adhesion and allowing vaporization components to be discharged.
Implementation Method 1
a lid part (53) to be inserted into the housing part (51)
Implementation Method 2
with a tapered part (54)
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
An apparatus for manufacturing a field pole magnetic body formed by laminating magnet segments produced by cutting and dividing a permanent magnet and to be arranged in a rotary electric machine includes a housing part adapted to successively house a plurality of the magnet segments having adhesive applied to cut surfaces with the cut surfaces facing each other and has an inner side surface adjacent to outer side surfaces of the housed magnet segments, and a pressing unit adapted to press the magnet segments housed in the housing part toward a bottom part of the housing part in a longitudinal direction. The magnet segments are restrained in a width direction and a thickness direction by the inner side surface of the housing part when the magnet segments are pressed by the pressing unit.