Permanent Magnet Molding With Rotatable Coils for Direction Control
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Solution Overview
Problem
Conventional permanent magnet manufacturing apparatuses are limited in their ability to freely change the direction of the magnetic field applied to the raw material, making it difficult to adjust the magnetization direction of permanent magnets according to varying applications, dimensions, and shapes.
Innovation Solution
A permanent magnet manufacturing apparatus featuring a compression molding mechanism and a magnetic field generating mechanism with movable and rotatable coils, allowing for the manipulation of the magnetic field direction through the movement and rotation of the magnetic field generating mechanism and individual coils, enabling precise control over the magnetization direction of the magnets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the direction and intensity of magnetic field are fixed in conventional apparatus, then the manufacturing process is simple, but the magnetization direction cannot be easily changed to accommodate various applications
Solution Approach 1:
The magnetic field generating mechanism is made movable and rotatable instead of fixed. The entire mechanism or individual coils can be positioned and oriented to different locations and angles, enabling dynamic adjustment of magnetic field direction and intensity applied to the raw material, thus achieving versatile magnetization control
Solution Approach 2:
The magnetic field generating mechanism is divided into multiple independent coils that can be individually controlled. Each coil can be moved and rotated independently, allowing precise control over the magnetic field distribution and direction applied to different regions of the raw material
2Manufacturing precision
If the size of permanent magnet is reduced, then the precision and miniaturization are improved, but the control of magnetic field direction and intensity becomes more difficult in narrow regions
Solution Approach 1:
The segmented coil structure allows different regions of the raw material to receive magnetic fields with different directions and intensities. Each coil can be independently positioned and oriented to apply tailored magnetic field conditions to specific local areas, enabling precise magnetization control in miniaturized components
Solution Approach 2:
The movable and rotatable coils can be dynamically positioned and oriented to precisely control the magnetic field application in narrow regions, making it easier to achieve accurate magnetization direction control even in miniaturized permanent magnets
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 and precise adjustment of the magnetization direction of permanent magnets, accommodating diverse applications and shapes by allowing for flexible control of the magnetic field applied during the manufacturing process.
Implementation Method 1
A compact is formed from the raw material by compressing the raw material using the die while applying a magnetic field, which is generated by a coil, to the raw material in the die
Data Source
AI summary
A permanent magnet manufacturing apparatus includes a compression molding mechanism and a magnetic field generating mechanism. The compression molding mechanism includes a pair of punches facing each other, and a tubular die into which the punches are inserted. The magnetic field generating mechanism includes a pair of coils. At least a part of the compression molding mechanism is disposed inside the coils. A raw material, containing magnet powder, supplied into the die is compressed by the punches while a magnetic field generated by the coil(s) is applied to the raw material.A direction of the magnetic field applied to the raw material is changed by at least one operation selected from a group consisting of a movement of an entirety of the magnetic field generating mechanism, a rotation of the entirety of the magnetic field generating mechanism, and a rotation of at least one of the coils.