Bearing Support Bracket Layout for Precise Positioning
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Solution Overview
Problem
The existing support devices for bearings require extensive machining of large areas, leading to increased costs and complexity in accurately positioning the bearing, particularly when the abutting regions on the bracket and bearing cap need to be precisely aligned.
Innovation Solution
A support device configuration that reduces the abutting region by using a case and bracket with specific abutting portions and an engaging member, allowing for separate positioning in multiple directions while minimizing the need for extensive machining, thereby simplifying the positioning process and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the entire reference surface and inner surface of the bracket supporting portion are machined to accurately position the bearing, then the bearing positioning accuracy is improved, but the machining area increases and manufacturing cost increases
Solution Approach 1:
The bracket supporting portion is divided into multiple discrete abutting portions (first bracket abutting portion, second bracket abutting portion, third bracket abutting portion) instead of requiring machining of the entire surface. Each abutting portion is a localized feature that provides specific positioning functionality, thereby reducing the total machined area while maintaining positioning accuracy.
Solution Approach 2:
Instead of uniformly machining the entire bracket supporting surface, the invention applies machining only to specific localized areas where abutting portions are needed. The abutting portions are precisely machined to provide the necessary positioning accuracy, while the rest of the bracket surface remains unmachined or minimally processed, reducing overall machining cost and complexity.
2Manufacturing precision
If the bearing is supported by a large abutting region on the bracket, then the positioning accuracy is improved, but the device complexity and machining difficulty increase
Solution Approach 1:
The positioning function is segmented into multiple discrete abutting portions located at different positions and orientations on the bracket. This segmentation allows each portion to be independently designed and machined, simplifying the overall bracket structure while achieving accurate positioning through the collective action of these segmented features.
Solution Approach 2:
The invention extends positioning from a two-dimensional surface contact to a three-dimensional arrangement of multiple abutting portions distributed in space. By utilizing portions positioned at different locations and orientations (including radial and axial directions), the system achieves accurate positioning without requiring large machined surfaces, thereby reducing structural complexity.
Data Source
AI summary
A support device for a bearing that rotatably supports a shaft extending in a first direction includes a case that houses the bearing, and a bracket to which the case is fixed. When the case is fixed to the bracket, a first abutting portion of a case main body is in a state abutting against a first bracket abutting portion of a bracket main body in the first direction, and a second case abutting portion of the case main body is in a state abutting against a second bracket abutting portion of the bracket main body in a second direction that forms a right angle with the first direction. There is a region where the case and the bracket are separated between the abutting locations of these abutting portions.