XYθ Precision Alignment Platform Worm Drive Mechanism
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Solution Overview
Problem
Conventional alignment platforms, such as ultrahigh load alignment devices, face challenges in precise circular path movement due to the need for synchronous operation of multiple driving devices, leading to increased processing and response times, which affects efficiency.
Innovation Solution
A xyθ precision alignment platform is designed with a base, Y-axis and X-axis guideway units, power units, and a rotating unit with a worm and arcuate teeth arrangement, allowing for independent motor operation and simplified control, enabling precise rotation and movement without requiring simultaneous operation of all motors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If three sets of driving devices are used to drive the moving platform moving or rotating, then the moving platform can achieve complex motion, but the driving devices must cooperate synchronously which increases processing and response time
Solution Approach 1:
The patent extracts the rotation function from the complex three-device system and assigns it to a dedicated rotating unit. This rotating unit includes a rotating platform that can rotate independently around the Z-axis, with its own driving mechanism (motor and transmission components). By separating the rotation function into a dedicated unit, the system no longer requires synchronous coordination of three driving devices for rotation, thus reducing processing and response time while maintaining full motion capability.
2Adaptability or versatility
If three power units are used to drive the moving platform, then the platform can move and rotate, but the operation becomes complex when rotation is required
Solution Approach 1:
The patent segments the motion control into distinct functional units: a moving platform for XY translation and a separate rotating platform for Z-axis rotation. Each unit has its own dedicated power unit and control system. The moving platform is driven by motors for X and Y axis movement, while the rotating platform has its own motor for rotation. This segmentation allows independent control of each function, greatly simplifying operation compared to coordinating three power units simultaneously.
3Force
If conventional alignment platforms are used, then they can handle ultrahigh loads, but they require great quantity of calculation by the controller, affecting work efficiency
Solution Approach 1:
The rotating unit is equipped with its own dedicated motor and transmission mechanism (including worm gear and arcuate teeth arrangement), making it self-sufficient for rotation operations. This self-service capability means the rotating platform can perform rotation independently without requiring the controller to calculate and coordinate multiple driving devices, thus reducing computational burden and improving work efficiency while maintaining ultrahigh load capacity.
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 operational efficiency by reducing the workload on controllers, improving response times, and allowing for accurate and precise control of rotation angles, making it suitable for high-precision tasks like assembling miniature parts or machine processing.
Implementation Method 1
The third power unit is disposed by a lateral side of the second moving platform and includes a third motor and a worm driven by the third motor and engaged with the arcuate teeth arrange, wherein the third motor drives the worm rotating to drive the arcuate teeth arrange to move the third moving platform to rotate relative to the base.
Data Source
AI summary
A xyθ precision alignment platform is provided. The alignment platform includes three power units and three moving platform. Two of the power units can drive a third moving platform moving in X or Y direction. The other power unit has a worm which can drive an arcuate teeth arrangement disposed between the second moving platform and the third moving platform to drive the third moving platform rotating. Whereby, since the worm is arranged to drive the arcuate teeth arrangement laterally, the alignment platform is thin and the rotative movement of the third moving platform can be precisely controlled. Additionally, each power unit may be electrically connected to a controller for respectively driving and controlling each power unit. When only the rotation of the third moving platform is required, only one of the power units needs to be driven, thus simplifying the operation of the alignment platform and improving the work efficiency.