Eccentric Gearing With N+1 Contact Support for Compact Balance
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Solution Overview
Problem
Existing eccentric gearings are complex, large, and costly due to the high number of components required to prevent unbalances, which are typically achieved with three or more cycloidal disks and eccentric cams, leading to a long overall length and increased manufacturing efforts.
Innovation Solution
A generic eccentric gearing design featuring a first gearing element with a radially protruding N number of cams uniformly distributed in the circumferential direction, supporting the second gearing element at N+1 contact points, allowing for compact and balanced operation with reduced components and assembly efforts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If three or more cycloidal disks and eccentric cams are used to prevent unbalances, then the gearing is free of unbalances, but the number of components increases, leading to increased device complexity, overall length, and manufacturing cost
Solution Approach 1:
The patent combines multiple cycloidal disks onto a single common eccentric cam, merging what would traditionally be separate components into a unified structure. This allows the gearing to maintain balance while reducing the total number of parts, directly resolving the contradiction between balance and device complexity
Solution Approach 2:
The common eccentric cam serves multiple functions simultaneously: it drives multiple cycloidal disks, provides the necessary eccentric motion, and maintains balance for the entire assembly. This multi-functionality reduces the need for separate components, addressing the contradiction between balance and device complexity
2Stability of the object's composition
If three or more cycloidal disks and eccentric cams are used to prevent unbalances, then the gearing is free of unbalances, but the overall length increases
Solution Approach 1:
By merging multiple cycloidal disks onto a single common eccentric cam, the patent reduces the axial length required for multiple separate cam-disk assemblies. This consolidation maintains balance while compacting the overall length of the gearing
3Reliability
If multiple separate eccentric cams and cycloidal disks are used, then the gearing operates reliably, but the manufacturing cost and manufacturing efforts increase
Solution Approach 1:
The patent merges multiple cycloidal disks onto a single common eccentric cam, reducing the total number of precision-machined components. This reduces manufacturing cost and assembly efforts while maintaining reliable operation through the balanced design
4Reliability
If multiple separate eccentric cams and cycloidal disks are used, then the gearing operates reliably, but the number of components increases
Solution Approach 1:
The patent combines multiple cycloidal disks onto a single common eccentric cam, reducing the number of components from multiple separate cam-disk pairs to a unified assembly. This maintains operational reliability through proper balancing while significantly reducing device complexity
Data Source
AI summary
The present disclosure relates to an eccentric gearing having a first gearing element, which has a first axis and an outer contour having at least one cam, and having a second gearing element, which has a second axis which is constantly held eccentrically in relation to the first axis. The first gearing element is rotatable relative to the second gearing element, and the second gearing element is supported on the outer contour of the first gearing element such that a rotation of the first gearing element effects a rotation of the second axis of the second gearing element about the first axis. The first gearing element has a number N of cams protruding radially, and uniformly distributed in the circumferential direction, in relation to the first axis. The second gearing element is supported at N+1 contact points of the first gearing element, wherein N is at least two.