Flanged Bearing Shell with Composite Material Segmentation
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Solution Overview
Problem
Flange bearing shells consume more material than necessary, leading to increased costs, weight, and space requirements due to the use of material in areas with lower loads compared to the radial bearing area.
Innovation Solution
A flange bearing shell design featuring a semi-cylindrical support body made of high-strength material and a softer material overlay for the radial bearing area, with flanges formed from projections of the overlay that extend beyond the support body, reducing material usage and weight while maintaining necessary dimensional stability and sliding properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the substrate is used to form both the radial bearing area and the flanges, then dimensional stability is ensured, but material consumption and weight increase
Solution Approach 1:
The bearing shell is divided into two functional parts: a substrate forming the radially outer region with high dimensional stability requirements, and a coating forming the radially inner region where flanges are formed. This segmentation allows each material to be optimized for its specific function, reducing overall material consumption while maintaining necessary mechanical properties.
Solution Approach 2:
Different regions of the bearing shell are assigned different material properties. The substrate provides dimensional stability in the radial bearing area, while the softer coating material in the flange regions provides adequate support with reduced material thickness. This local differentiation of material quality eliminates the need for uniform high-strength material throughout the entire structure.
2Reliability
If the substrate forms the flanges, then structural integrity is maintained, but weight and space requirements increase
Solution Approach 1:
The bearing shell employs a composite structure where a substrate (e.g., steel) is combined with a coating layer (e.g., bearing material). The substrate provides the necessary structural integrity and dimensional stability, while the coating forms the flanges with sufficient mechanical strength. This composite approach reduces weight compared to using substrate material throughout, while maintaining reliable structural performance.
3Ease of operation
If a coating is applied to the substrate, then sliding properties are improved, but manufacturing complexity increases
Solution Approach 1:
The manufacturing process utilizes controlled plastic deformation during bending to change the physical state of the coating material. By applying appropriate bending forces, the coating is plastically deformed to form the flange structure. This parameter change (from flat coating to bent flange) is achieved through straightforward forming operations that do not significantly increase manufacturing complexity while delivering the desired sliding properties.
Data Source
Figure 1~2
Figure 3a~3c
Figure 4a~4c
AI summary
The invention relates to a flanged bearing shell (1) with a semi-cylindrical bearing area (20) by which an axial direction, a radial direction and a circumferential direction are defined, wherein the semi-cylindrical bearing area comprises a support body (21) formed from a first material and a radially internal bearing (31) made of a second material, which is softer than the first material, and wherein the support body is formed in the form of a strip bent into a semi-cylindrical shell with a substantially rectangular cross-section and is bounded in the axial direction by longitudinal edges (22).According to the invention, the bearing surface has an axial projection (32) made of the second material extending beyond the longitudinal edges of the support body, and the projections are bent outwards in the radial direction such that they extend radially beyond the support body, thus forming flanges (38) that connect axially to the semi-cylindrical bearing area. The invention further relates to two methods for manufacturing such flanged bearing shells.