Segmented Shaft Bearing Carrier Ring Design
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Solution Overview
Problem
Existing camshaft shaft/bearing arrangements require a large carrier ring to accommodate pre-assembled rolling bearings, leading to increased material usage, weight, and installation space requirements, making it difficult to insert camshafts with radially larger functional elements into bearing blocks.
Innovation Solution
Divide the rolling bearing into a fixed outer ring in the bearing block and a rolling body cage on the carrier ring, allowing the carrier ring to be reduced in size while still accommodating the functional elements, enabling the shaft to fit through bearing blocks with a smaller diameter and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pre-assembled rolling bearing is fixed in the bearing block, then the shaft can be easily borne, but the carrier ring must have a large diameter greater than all functional elements on the shaft
Solution Approach 1:
The rolling bearing is divided into two separate parts: the outer ring is fixed in the bearing block, while the rolling body cage is fixed to the carrier ring on the shaft. This segmentation allows the carrier ring to be reduced in diameter while still accommodating the rolling bearing components separately.
2Ease of operation
If the carrier ring diameter is increased to accommodate all functional elements, then the shaft can be inserted into bearing points, but the material usage and weight increase
Solution Approach 1:
By separating the rolling bearing into outer ring and rolling body cage components, the carrier ring only needs to accommodate the cage, allowing for a smaller diameter and reduced weight while still enabling proper shaft insertion and bearing functionality.
3Ease of operation
If the carrier ring diameter is increased to accommodate all functional elements, then the shaft can be inserted into bearing points, but the installation space required increases
Solution Approach 1:
The segmentation of the rolling bearing allows the carrier ring to have a reduced diameter that only needs to clear the rolling body cage, not the entire bearing assembly. This reduces the installation space required in the bearing block while maintaining proper shaft insertion capability.
4Ease of operation
If the carrier ring diameter is increased to accommodate all functional elements, then the shaft can be inserted into bearing points, but the material usage increases
Solution Approach 1:
By dividing the rolling bearing into separate components and fixing only the rolling body cage to the carrier ring, the carrier ring diameter can be minimized to only what is necessary to accommodate the cage, significantly reducing material usage compared to a full-diameter carrier ring.
Data Source
AI summary
A shaft may have functional elements arranged thereon and at least one bearing point. At least one rolling bearing with rolling bodies may be arranged between the shaft and the at least one bearing point, the bearing having at least one rolling body cage configured to accommodate the rolling bodies and an outer ring. The rolling body cage may be fixed at least one of directly and indirectly to the shaft by a carrier ring and the outer ring may be fixed in the bearing point. The carrier ring may include the rolling body cage fixed thereon, the cage having a greater radial extent than the functional elements. The carrier ring may have a radial extent smaller than the greatest radial extent of one of the functional elements.