Multi-Reducer Rotating Shaft Assembly With Offset Attachment Holes
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Solution Overview
Problem
The assembly of rotating shaft structures with multiple speed reducers is hindered by the need for precise adjustment of attachment holes, which can shift when a drive shaft is inserted, leading to inefficiencies in manufacturing.
Innovation Solution
The design features one attachment hole larger or elongate than the other to accommodate positional shifts during assembly, allowing for easier attachment of speed reducers to links despite displacement, and incorporates shims to adjust gaps and prevent excessive force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a drive shaft is inserted while being rotated to assemble multiple speed reducers, then the assembly process can be simplified, but the input shaft of the reducer rotates and the positional relationship between attachment holes shifts
Solution Approach 1:
The patent transforms the static attachment hole configuration into a dynamic system where the drive shaft can rotate during insertion. The attachment holes are designed to accommodate rotational movement, allowing the drive shaft to be inserted while rotating without compromising the final positional alignment. This dynamic approach enables simplified assembly while maintaining manufacturing precision.
Solution Approach 2:
The patent changes the geometric parameters of the attachment holes to allow for rotational insertion. By designing the attachment holes with specific dimensional characteristics that accommodate the rotation angle, the system enables the drive shaft to be inserted in a rotated state while ensuring proper alignment is achieved during or after insertion.
2Adaptability or versatility
If separate drive shafts are inserted into each speed reducer, then assembly flexibility is improved, but the input shaft may still rotate causing positional shifts
Solution Approach 1:
The patent enables each speed reducer to accommodate rotational insertion of separate drive shafts through dynamically designed attachment holes. Each attachment hole configuration allows the drive shaft to rotate during insertion while maintaining the ability to achieve proper alignment, thus preserving both assembly flexibility and manufacturing precision.
3Manufacturing precision
If precise adjustment of attachment holes is required before assembly, then manufacturing precision is maintained, but manufacturing efficiency decreases
Solution Approach 1:
The patent implements preliminary action by pre-configuring the attachment holes with specific geometric parameters that inherently accommodate rotational insertion. This preliminary design eliminates the need for time-consuming post-assembly adjustments, as the attachment holes are already optimized to allow drive shaft insertion while rotating, thereby maintaining precision while improving efficiency.
Solution Approach 2:
The attachment hole design enables the assembly process to be self-aligning during rotation. As the drive shaft is inserted while rotating, the attachment holes and drive shaft geometry work together to automatically achieve proper alignment without requiring external adjustment mechanisms or additional alignment steps, thus improving manufacturing efficiency while maintaining precision.
Data Source
AI summary
This rotating shaft structure comprises a first link, a second link connected to the first link, and a plurality of speed reducers positioned between the first link and the second link. At least one of a speed-reducer-side attachment hole and a first-link-side attachment hole, which are for joining the speed reducers to the first link, is larger or longer than the other.