Electric Motor Stator Frame Assembly for Precise Vibration Damping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the manufacture of industrial electric motors, small deviations in component dimensions or mutual locations can significantly impact motor performance, leading to issues like vibrations due to improper attachment of components.
Innovation Solution
The method involves machining a stator frame with intermediate plates drilled at predetermined positions to receive a stator, which is machined with threaded holes at corresponding positions. This allows for a robust connection between the stator and stator frame through precise alignment and tightening with bolts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mechanical connector elements are used to assemble sub-entities, then the connection between components is strengthened, but the assembly complexity increases due to the need for precisely positioned reception points
Solution Approach 1:
The reception points for mechanical connector elements are prepared in advance during the manufacturing of individual sub-entities, rather than being created during assembly. This preliminary preparation of mounting points simplifies the final assembly process while maintaining strong mechanical connections through bolts and other fasteners.
2Reliability
If components are assembled with high precision to avoid vibrations, then motor performance is improved, but the manufacturing precision requirements increase
Solution Approach 1:
Critical precision features such as reception points for mechanical connectors are prepared in advance during component manufacturing with high precision. This allows the final assembly to achieve accurate component alignment and rigid attachment without requiring extremely high precision during the assembly process itself, thereby reducing vibrations while maintaining manufacturability.
Data Source
AI summary
An electric motor which includes a stator with an outer perimeter provided with beams and a stator frame surrounding the stator and including at least two intermediate plates having openings for receiving the stator. For enabling simplified assembly of the electric motor, the intermediate plates include first contact surfaces forming a tight contact with corresponding second contact surfaces provided on the beams. The electric motor is provided with bolts extending through the intermediate plates between the outside of the stator frame and the openings at an exactly predetermined position of each of the first contact surfaces and engaging threaded holes provided to an exactly predetermined position of each of the second contact surfaces.