Transmission Spacer Guideway Integration
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Solution Overview
Problem
Existing transmissions face limitations in mechanical load capacity and precise alignment of guideways, leading to reduced performance and increased manufacturing complexity due to high mechanical loads and the need for precise alignment of rotary bodies.
Innovation Solution
A transmission design with spacers forming guideways between rotary bodies, allowing for precise alignment and reduced mechanical loads, enabling higher performance and easier manufacturing by forming guideways on a single component, the spacer body, which spans the entire length between rotary bodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If spacers or threaded bolts are used to connect rotary bodies, then the rotary bodies can be connected, but the connection is exposed to high mechanical loads which limits the specific load capacity
Solution Approach 1:
The patent combines the spacer and guideway into a single integrated component. The spacer body forms the guideway running surfaces directly, eliminating the need for separate guideway components. This merging reduces the number of parts and connection elements exposed to high mechanical loads, thereby improving specific load capacity while reducing structural complexity.
Solution Approach 2:
The spacer acts as an intermediary element that not only connects the two rotary bodies but also forms the guideway for the transformation means. By positioning the spacer between the rotary bodies and forming guideways on its surfaces, it mediates both the connection function and the guidance function, reducing the mechanical load on connection elements.
2Manufacturing precision
If guideways are formed on both rotary bodies, then linear guides can be arranged, but precise alignment of the guideway axes is required which increases manufacturing complexity
Solution Approach 1:
The patent extracts the guideway formation from both rotary bodies and concentrates it on the spacer alone. The guideway running surfaces are formed only on the spacer body, not on the rotary bodies themselves. This extraction eliminates the need to precisely align guideways on two separate components, significantly reducing manufacturing complexity while maintaining alignment precision through the spacer's inherent positioning.
3Stability of the object's composition
If threaded bolts are used to connect spacer body stumps, then rotary bodies can be firmly connected, but the bolts are exposed to high mechanical loads
Solution Approach 1:
The spacer body stumps are integrated directly into the spacer structure, forming a unified component. This merging creates a more stable connection structure where the spacer itself provides the connecting function, reducing reliance on separate fastening elements and improving overall connection stability.
Solution Approach 2:
The spacer body acts as an intermediary that provides both the connection function and the guideway function. By forming the guideways on the spacer surfaces, it mediates the load distribution, reducing the mechanical load on connecting bolts while maintaining connection stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances mechanical load capacity, reduces alignment errors, and simplifies manufacturing by allowing for higher performance with reduced weight and increased flexibility in gear arrangement, while ensuring precise rotational alignment and lower production costs.
Implementation Method 1
Between the running surfaces of a guideway formed by a projection and the running surfaces of a guideway formed by a corresponding recess, rolling elements can be arranged, for example, which then roll between the running surfaces of the guideways.
Data Source
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AI summary
The invention relates to a transmission, comprising inner gearing (41) and a hollow cylindrical-shaped base body (40) which has a rotational axis (40a) and in which a driven input element (10) and an output element (120) are rotatably supported. The output element (120) has two rotating bodies (50, 50'), which can be connected or are connected to one another non-rotatably by means of spacer bodies (52) and which preferably have a circular cross-section transversely to said rotational axis (40a), preferably at least one gear wheel (30) and at least one transformation means (70) for converting planetary movements of said gear wheel (30) into rotational movements of the output element (120) being disposed between said rotating bodies. According to a first object of the invention, the spacer bodies (52) are designed in one piece such that each spacer body (52) extends at least across the entire free inner length (L) between the two rotating bodies (50, 50’) preferably in one piece. According to a second object of the invention, the spacer bodies (52) at the same time form running surfaces (541, 54b) of guide tracks of linear guides (50b) associated with the output element (120) and disposed between the output element (120) and transformation means (70).