Toothed Annular Lamination Stack with Releaseable Adhesive Bonding
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Solution Overview
Problem
The existing methods for assembling and disassembling annular disk packs often result in undesirable deformations and the risk of short circuits due to punching burrs getting into the depressions during the joining and separating processes, which affect the electrical and geometric properties of the laminated core.
Innovation Solution
The annular disk pack is designed with individual tooth packs connected via a releaseable adhesive connection, featuring projections and depressions without undercuts, allowing for easy assembly and disassembly without plastic deformations, and the use of adhesive dots for secure bonding during transport and easy separation by manual force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If individual tooth packets are assembled by inserting projections into depressions and shifted in the longitudinal direction, then the individual tooth packets can be joined to form the ring-shaped disk packet, but undesirable plastic deformations occur in the area of the projections and depressions, impairing electrical and geometric properties
Solution Approach 1:
The projections and depressions are designed without undercuts in advance, so that when assembly occurs, no plastic deformations can occur during the joining process. This preliminary design decision prevents the problem before it arises.
Solution Approach 2:
The mechanical shifting process that caused deformations is replaced by a simple insertion process. The projections fit into the depressions without requiring longitudinal displacement, eliminating the mechanical stress that caused plastic deformations.
2Ease of manufacture
If individual tooth packets are assembled by inserting projections into depressions and shifted in the longitudinal direction, then the individual tooth packets can be joined to form the ring-shaped disk packet, but chips from punching burrs get into the depressions causing short circuits
Solution Approach 1:
The depressions are designed without undercuts in advance, creating a smooth, open structure that prevents punching burrs and chips from becoming trapped during assembly. This preliminary design eliminates the risk of short circuits.
Solution Approach 2:
The design transforms the potential harm of punching burrs into a benign situation. By eliminating undercuts, any burrs that form during punching are naturally excluded from the depression areas, converting a potential defect into a non-issue.
3Stability of the object's composition
If the individual tooth packets are securely held together during transport, then the disk packet remains stable, but the packets cannot be easily separated for sheathing and winding
Solution Approach 1:
The adhesive strength parameter is specifically selected to create a dual-state system: strong enough to maintain stability during transport, but weak enough to allow easy manual separation when needed for sheathing and winding operations.
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 ensures excellent electrical and geometric properties of the disk pack by preventing deformations and burr-related issues, allowing for reliable assembly and disassembly without compromising the disk pack's performance.
Implementation Method 1
adjacent individual tooth packs (1) are connected to one another via at least one adhesive connection
Data Source
Figure 1~4
Figure 5~8
AI summary
The annular lamellar assembly (2) consists of adjoining individual tooth assemblies (1), each having a pole shaft (3) and a pole shoe (4). Adjacent individual tooth assemblies lie against each other with the end faces (5) of their pole shoes (4). Adjacent individual tooth assemblies (1) are connected to each other by at least one adhesive bond such that the adhesive bond can be released under force to detach the individual tooth assemblies (1) from the annular lamellar assembly (2). During the manufacture of the lamellar assembly (2), an adhesive is applied at least partially between the individual tooth assemblies (1). The individual tooth assemblies (1) can be detached from the annular lamellar assembly (2) by the user for encasing and wrapping. The adhesive bond ensures that the individual tooth assemblies (1) are held securely together during transport.