Linear Motor Secondary Stacked Plate Base
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Solution Overview
Problem
The manufacturing process of linear motors is inefficient due to complex machining required for a low-carbon steel base and the challenge of stacking silicon steel sheets on the secondary side, which are damaged by magnetic attraction and repulsion forces.
Innovation Solution
A secondary side linear motor design featuring stacked plates with a combining mechanism, such as rivets and rivet protrusions, to securely attach magnetic members and prevent stripping, allowing for simpler manufacturing and improved structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If multiple silicon steel sheets are stacked into a block for the secondary side, then eddy current loss is reduced, but the sheets are damaged by stripping due to magnetic attraction and repulsion effects
Solution Approach 1:
An insulating layer is introduced between adjacent silicon steel sheets to act as a mediator that prevents direct magnetic interaction. This insulating layer blocks the magnetic flux path between sheets, eliminating the attraction and repulsion forces that cause sheet stripping, while still allowing the stacked structure to function for reducing eddy current loss.
Solution Approach 2:
The secondary side employs a composite structure combining multiple silicon steel sheets with insulating material between them. This composite approach maintains the beneficial electrical isolation properties of silicon steel sheets for reducing eddy current loss while the insulating material prevents mechanical failure from magnetic forces.
2Strength
If a low-carbon steel base is machined into specific size through milling and grinding, then structural rigidity is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The base structure is segmented into multiple plate-shaped bodies that are stacked together. This segmentation allows each individual plate to be simpler to manufacture while the stacked assembly provides the required structural rigidity, avoiding the need for complex machining of a single solid base.
Solution Approach 2:
Multiple simple plate-shaped bodies are combined through stacking to form the complete base structure. This merging of simple components achieves the structural rigidity of a complex machined base while significantly simplifying the manufacturing process of individual parts.
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
This design enhances manufacturing efficiency, reduces costs, and maintains performance comparable to conventional linear motors while providing 40% higher output characteristics when using magnetically conductive materials.
Implementation Method 1
a linear motor may generate a normal force in the vertical direction in addition to a thrust for linear movement, and attraction and repulsion effects exist between the primary side and the secondary side
Data Source
AI summary
The present invention provides a secondary side of a linear motor, which mainly includes a base, a combining mechanism and multiple magnetic members, wherein the base has multiple plates that are sequentially stacked into a block; the combining mechanism is configured to combine the plate-shaped bodies; and the magnetic members are disposed on the base in a separated manner.