Positive Load Alignment Mechanism for Six-Degree Freedom Positioning
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Solution Overview
Problem
Conventional micron/nanometer positioning platforms with six-degree of freedom have complex structures, poor security, high assembly time, and low stability and accuracy due to multiple components stacked on top of each other, leading to excessive moving forces and instability.
Innovation Solution
A positive load alignment mechanism with a simplified structure featuring three driving devices, three movable devices, and three movable bearing platforms on a platform device, allowing for back and forth, left and right, or rotating movements, which supports the movable platform and achieves high pressure resistance, security, accuracy, and all-direction displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple components are stacked one upon the other to achieve six-degree of freedom displacement, then the positioning platform can realize multi-directional movement, but the structure becomes complicated and assembly time increases
Solution Approach 1:
The patent merges multiple independent components (X-axis saddle, Y-axis saddle, spring return devices, cuneiform slider mechanisms, driving devices) into an integrated platform structure where components are distributed across upper and lower platforms rather than stacked vertically. This combining approach maintains six-degree of freedom capability while reducing structural complexity and assembly time.
Solution Approach 2:
The patent transitions from a vertical stacking arrangement to a horizontal distribution arrangement by placing components on both upper and lower platforms. This dimensional reorganization allows six-degree of freedom movement to be achieved through spatial distribution rather than vertical layering, thereby reducing structural complexity.
2Adaptability or versatility
If multiple components are stacked one upon the other to achieve six-degree of freedom displacement, then the positioning platform can realize multi-directional movement, but assembly time becomes excessive
Solution Approach 1:
By merging components into an integrated platform structure with upper and lower platforms, the patent reduces the number of separate assembly operations required. The distributed arrangement allows for more efficient assembly workflows compared to sequential vertical stacking, thereby reducing assembly time while maintaining six-degree of freedom functionality.
3Adaptability or versatility
If multiple components are stacked one upon the other to achieve six-degree of freedom displacement, then the positioning platform can realize multi-directional movement, but stability and accuracy deteriorate
Solution Approach 1:
The patent improves stability and accuracy by distributing components horizontally across upper and lower platforms rather than stacking them vertically. This dimensional change reduces the cumulative effect of manufacturing tolerances and structural deformations that occur in vertical stacking, thereby enhancing displacement stability while maintaining six-degree of freedom capability.
4Adaptability or versatility
If multiple components are stacked one upon the other, then the positioning platform can achieve six-degree of freedom, but security becomes poor due to excessive moving force
Solution Approach 1:
The patent enhances security by redistributing components from a vertical stack to a horizontal arrangement across upper and lower platforms. This dimensional reorganization balances the moving forces and rotating forces across multiple support points, preventing excessive force concentration that could cause separation or impact hazards, while maintaining six-degree of freedom functionality.
Data Source
AI summary
A positive load alignment mechanism comprises a platform device in which are disposed a plurality of driving devices, movable devices and movable bearing platforms. The driving device is connected to the movable device, and the movable bearing platform firmly supports a movable platform of the platform device. The driving devices are used to drive the movable devices to perform the back-and forth or left-and-right or rotating movement, and the movable bearing platforms firmly support the movable platform. By such arrangements, it can achieve the objectives of high pressure resistance, simplified structure, high security, high accuracy and all-direction displacement.