Pivot Cradle Bearing With Asymmetrical Lever Synchronization
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Solution Overview
Problem
Existing pivot cradle bearings for axial piston machines lack effective synchronization of cage movement with bearing parts, leading to inefficiencies in manufacturing and operational performance.
Innovation Solution
A pivot cradle bearing with an asymmetrical articulated bearing design, featuring a pivoting lever mounted in the cage segment, which is secured using a spherical sleeve joint or a securing ring, allowing for one-piece formation of the cage segment and enhanced mechanical load capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional synchronization device is used in pivot cradle bearing, then the structure is simple, but the manufacturing efficiency is low and operational performance is insufficient
Solution Approach 1:
The cage segment is formed as a one-piece component by combining multiple forming operations (initial forming, pre-forming, and final forming) into a single integrated manufacturing process. This merging of operations eliminates the need for separate assembly steps while maintaining structural integrity and synchronization functionality.
Solution Approach 2:
The cage segment undergoes pre-forming operations before final assembly, where the basic shape and synchronization features are prepared in advance. This preliminary action enables more efficient final assembly and reduces manufacturing time while ensuring proper synchronization geometry is established beforehand.
2Adaptability or versatility
If an asymmetrical articulated bearing design is used, then the adaptability to load conditions is improved, but the manufacturing complexity increases
Solution Approach 1:
The cage segment is designed with an asymmetrical articulated bearing structure that provides different geometric characteristics for handling radial and axial loads. The asymmetrical design includes non-uniform wall thickness and specialized forming zones that enable optimized load distribution while being manufactured as a one-piece component through controlled forming operations.
3Strength
If a one-piece cage segment is formed, then the mechanical load capacity is enhanced, but the manufacturing precision requirements increase
Solution Approach 1:
The manufacturing process includes pre-forming operations that prepare the cage segment blank with appropriate pre-shaping before final forming. This preliminary action reduces the precision requirements of the final forming operation by pre-establishing the basic geometry and reducing material deformation complexity.
Solution Approach 2:
The forming process utilizes controlled parameter changes including temperature, pressure, and deformation rate to manage the one-piece forming operation. By adjusting these parameters during different stages (initial forming, pre-forming, final forming), the process achieves high precision while maintaining the structural integrity and load capacity of the one-piece cage segment.
Data Source
AI summary
A pivot cradle bearing (1) for an axial piston machine, including a bent cage segment (2), in which rolling bodies are guided, which are arranged between two bearing parts which can be pivoted with respect to one another, wherein a synchronization device (4), which is designed for synchronizing the relative movement of the bearing parts with the displacement of the cage segment (2), includes a pivoting lever (5) which is mounted in the cage segment (2). An articulated bearing (6) is provided for mounting the pivoting lever (5) in the cage segment (2), the articulated bearing having an asymmetrical design with respect to a tangential plane (TE) lying centrally between an inner circumferential surface and an outer circumferential surface of the cage segment (2).