Magnet Bonding Device for Precise Rotor Assembly
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Summary
Problems
In motor assembly, adjacent layers of magnets in long axial motors experience polar repulsions, leading to deviations between their fixed and preset positions, making it difficult to bond them accurately to the casing.
Innovation solutions
An auxiliary device with clamping blocks, lifting rods, and ejector plates is used, where the lifting rods move up and down to drive the ejector plates radially, pressing the magnets against the casing inner wall and positioning bases, ensuring accurate alignment and fixation.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If magnets are bonded directly to the casing without auxiliary positioning, then the bonding process is simpler, but the magnets deviate from preset positions due to polar repulsions between adjacent layers
Why choose this principle:
The bonding device is segmented into multiple independent components: positioning bases for each magnet layer, ejector plates with contact surfaces, lifting rods, and clamping blocks. Each component performs a specific function (positioning, pressing, limiting movement), allowing the system to handle complex multi-layer magnet bonding while maintaining operational simplicity through modular assembly
Principle concept:
If magnets are bonded directly to the casing without auxiliary positioning, then the bonding process is simpler, but the magnets deviate from preset positions due to polar repulsions between adjacent layers
Why choose this principle:
The positioning bases are prepared in advance with predetermined positions and orientations for each magnet layer. The contact surfaces on ejector plates are pre-configured to match magnet geometries. This preliminary preparation ensures that when bonding occurs, magnets are already positioned correctly, eliminating the need for complex real-time adjustment mechanisms
Application Domain
Data Source
AI summary:
An auxiliary device with clamping blocks, lifting rods, and ejector plates is used, where the lifting rods move up and down to drive the ejector plates radially, pressing the magnets against the casing inner wall and positioning bases, ensuring accurate alignment and fixation.
Abstract
A auxiliary device for bonding a casing and magnets, comprising a press ( 10 ) and a housing positioning seat ( 2 ), the press ( 10 ) including a press block ( 12 ). A vertically arranged raising and lowering rod ( 3 ) is provided below the press block ( 12 ), the raising and lowering rod ( 3 ) being supported on the housing positioning seat ( 2 ) by means of an elastic piece. A plurality of push plates ( 4 ) are provided on the circumferential side of the raising and lowering rod ( 3 ), the push plates ( 4 ) being slidingly mated on the housing positioning seat ( 2 ) along the radial direction of the raising and lowering rod ( 3 ). The raising and lowering rod ( 3 ) moves up and down in order to cause the push plates ( 4 ) to move in the radial direction of the raising and lowering rod ( 3 ), and the sides of the push plates ( 4 ) away from the raising and lowering rod ( 3 ) are provided with contact faces used to make contact with magnets. The press block ( 12 ) is provided with a first pressing part ( 121 ) used to exert force on the raising and lowering rod ( 3 ), and a second pressing part ( 122 ) used to exert force on the magnets located on the side of the push plates ( 4 ). The housing and the auxiliary magnet bonding device feature the strength of being able to maintain the position the magnets were in when they were bonded in order to prevent the fixing position of the magnets from deviating from a set position, in order to improve the mounting precision of the magnets, facilitating fixing between the magnets and the housing.