Resolver Stator Pin Locating Feature Assembly
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Solution Overview
Problem
Existing resolver technologies face challenges in accurately determining the rotational position of a rotating member with respect to a stationary member due to complex assembly processes and potential inaccuracies in stator positioning.
Innovation Solution
A resolver design featuring a stator core with wire windings, a winding support with a pin that serves as a locating feature, and a cover that encloses the windings, simplifying assembly and ensuring proper positioning without additional parts, allowing for identical lamination design and improved manufacturing accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a separate locating feature part is used to ensure proper stator positioning, then positioning accuracy is improved, but device complexity and assembly steps increase
Solution Approach 1:
The locating feature is integrated into the winding support structure, combining the functions of mechanical support and positional locating into a single component. This eliminates the need for separate locating parts while ensuring accurate stator positioning relative to the rotor.
2Manufacturing precision
If different attachment slots are used to accommodate locating features, then positioning accuracy is improved, but manufacturing complexity of laminations increases
Solution Approach 1:
The winding support structure serves multiple functions: it provides mechanical support for the windings, acts as a locating feature for the stator, and maintains proper spacing. This multi-functionality allows standard attachment slots to be used across all laminations while still achieving accurate positioning.
3Manufacturing precision
If complex assembly processes are used to ensure proper stator positioning, then positioning accuracy is improved, but assembly time and productivity decrease
Solution Approach 1:
The locating feature is pre-integrated into the winding support structure during manufacturing, so that when the stator is assembled, the positioning function is already built-in. This eliminates the need for separate positioning adjustments or complex alignment procedures during assembly.
Data Source
AI summary
A resolver is configured to determine the rotational position of a first member that is selectively rotatable about an axis with respect to a second member. The resolver includes a stator core, a plurality of wire windings operatively connected to the stator core, a winding support between the windings and the stator core, and a cover at least partially enclosing the windings. One of the cover and the winding support defines a pin that is fittable inside a hole in the second member. The pin functions as a locating feature, which ensures that the stator is accurately mounted to the second member. Because the pin is part of the winding support or the cover, the locating feature does not entail the use of an extra part, thereby simplifying assembly of the stator.