Rotatable Bearing Assembly for Non-Parallel Rail Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing two-dimensional positioning systems face challenges in maintaining precise parallelism of rails, leading to reduced smoothness, positional accuracy, and potential damage due to misalignment, which is difficult and costly to achieve, especially in large structures.
Innovation Solution
A novel positioning system that uses a bearing system connecting an object to two non-parallel rails, allowing smooth translation to a desired position by incorporating rotatable bearing assemblies and low-friction materials, eliminating the need for precise parallelism between the rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rails are made precisely parallel, then smoothness of platform movement and positional accuracy are improved, but manufacturing complexity and cost increase significantly
Solution Approach 1:
The invention changes the geometric parameter of the rail system from requiring precise parallelism to allowing non-parallel configuration. By modifying the bearing assembly design to accommodate angular deviations, the system transforms the constraint of rail parallelism into a flexible parameter that can vary without compromising performance.
Solution Approach 2:
The bearing assembly acts as an intermediary element between the platform and the rails. It incorporates rotational joints that serve as mediators to compensate for misalignment, allowing the platform to move smoothly even when rails are not precisely parallel by absorbing the angular deviation through controlled rotation.
2Measurement precision
If rails are made precisely parallel, then positional accuracy is improved, but wear and damage to rails and linear bearings increase over time
Solution Approach 1:
The invention changes the operational parameter by allowing controlled rotation of the bearing assembly. This rotational freedom enables the system to adapt to rail misalignment dynamically, preventing the accumulation of stress and wear that would occur in a rigid parallel configuration, thereby extending the service life of the rails and bearings.
Solution Approach 2:
The bearing assembly is designed with dynamic rotational capability that allows it to adapt its orientation during operation. This dynamic adjustment prevents binding and excessive wear by continuously optimizing the contact angles between the bearing elements and the rails, even when the rails are not perfectly parallel.
3Ease of manufacture
If non-parallel rails are used, then ease of manufacture is improved, but smoothness of platform movement deteriorates
Solution Approach 1:
The bearing assembly serves as a mediator that decouples the platform from the non-parallel rails. By incorporating rotational joints, it transforms the geometric mismatch between non-parallel rails into a manageable degree of freedom, allowing smooth platform movement despite the angular deviation in the rail configuration.
Solution Approach 2:
The rotational capability of the bearing assembly provides dynamic adaptation to the non-parallel rail configuration. As the platform moves, the bearing can rotate to maintain optimal contact with the rails, ensuring smooth movement even when the rails diverge or converge at an angle.
4Device complexity
If non-parallel rails are used, then device complexity is reduced, but positional accuracy deteriorates
Solution Approach 1:
The invention changes the system parameter from fixed rigid connections to flexible rotational joints. This parameter change allows the bearing assembly to compensate for rail misalignment through rotation, maintaining positional accuracy without requiring complex active control systems or sophisticated rail alignment procedures.
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
Enables smooth and accurate movement in two-dimensional space despite non-parallel rails, reducing wear and operational issues, and simplifying the manufacturing process by eliminating the requirement for precise rail alignment.
Implementation Method 1
the bearing system permitting the object to be smoothly translated to a desired position
Data Source
AI summary
A positioning system moves an object in two generally orthogonal directions using a rotationally adjustable bearing system that connects the object to two pairs of non-parallel rails, the bearing system permitting the object to be smoothly translated in one or two directions to a desired position in planar space. This translation is performed smoothly notwithstanding a lack of parallelism between the linear rails.