Strain Wave Gear Assembly With Removable Fixing Jig
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Solution Overview
Problem
Strain wave gearing assemblies with integrated support mechanisms increase size, weight, and manufacturing costs, and result in higher rotation losses due to the need for larger installation spaces and increased complexity.
Innovation Solution
A temporary-fixing jig maintains the assembled state of strain wave gearing components until attachment to a motor or device, allowing for compact design and reduced installation space requirements by enabling assembly and removal operations from a single direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a bearing mechanism or support mechanism is incorporated to maintain the assembled state of strain wave gearing components, then the components remain positionally stable during transport and assembly, but the dimensions and weight of the unit increase, requiring larger installation space
Solution Approach 1:
The strain wave gearing components (internally toothed gear, externally toothed gear, and wave generator) are pre-assembled and positionally adjusted to their final configured state before being provided to the user. This preliminary assembly and positioning eliminates the need for additional support mechanisms during transport and installation, reducing the overall volume and weight while maintaining component stability.
Solution Approach 2:
The invention extracts and removes the bearing mechanism or support mechanism from the final product design. By pre-assembling the components in their operational configuration, the patent eliminates the need for these additional support elements, thereby reducing the installation space and weight requirements.
2Stability of the object's composition
If a bearing mechanism or support mechanism is incorporated to maintain the assembled state, then component alignment is preserved, but the weight of the unit increases, leading to higher rotation losses
Solution Approach 1:
The components are pre-assembled and positionally adjusted to their final configured state before being provided to the user. This preliminary assembly ensures component alignment is achieved during manufacturing rather than requiring additional support mechanisms in the final product, thereby reducing weight and minimizing rotation losses.
Solution Approach 2:
The bearing mechanism or support mechanism is extracted from the final product design. By maintaining component alignment through pre-assembly rather than through additional support structures, the invention reduces the overall weight of the unit, thereby reducing rotation losses and improving energy efficiency.
3Ease of operation
If additional mechanisms such as bearing mechanisms or joint mechanisms are incorporated, then the strain wave gearing can be easily assembled and maintained, but the device complexity increases, raising manufacturing costs
Solution Approach 1:
The strain wave gearing components are pre-assembled and positionally adjusted to their final configured state during manufacturing. This preliminary assembly simplifies the user-side installation process, as the components arrive in their operational configuration, eliminating the need for complex assembly procedures and additional support mechanisms.
Solution Approach 2:
The invention merges the assembly and positioning operations into the manufacturing process itself. By pre-assembling the internally toothed gear, externally toothed gear, and wave generator in their final operational configuration, the patent combines multiple operations (assembly, positioning, alignment) into a single integrated manufacturing process, thereby reducing device complexity and manufacturing costs.
Data Source
AI summary
A strain wave gearing has three components and a temporary-fixing jig, three components being an internally toothed gear, a cup-shaped externally toothed gear, and a wave generator. The temporary-fixing jig is securely fastened to an output shaft fixed to the externally toothed gear by a temporary-fixing bolt and is securely fastened to an input shaft fixed to a cam plate of the wave generator by a temporary-fixing bolt. The temporary-fixing jig engages with the output shaft and the input shaft and maintains the three components in an assembled state. There is no need for an operation for adjusting the positions of the three components in an operation for attaching the strain wave gearing to a motor. After the strain wave gearing has been attached to the motor, the temporary-fixing jig is removed from the strain wave gearing, wherefore less space is required for installation.