Dual-Guide Linear Motor Stage With Bridged Slide for Compact Rigidity
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Solution Overview
Problem
Conventional moving devices face challenges in compactness due to increased size when securing rigidity by thickening vertical plates, which affects the lifespan of linear guides and guide nuts under load.
Innovation Solution
The moving device incorporates a slide member bridged between two structures moving along parallel linear guides, with linear motors installed along these guides, allowing for compact design by distributing load and maintaining rigidity without increasing device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the vertical plate is increased to secure rigidity, then the rigidity is improved, but the device size is increased
Solution Approach 1:
The invention divides the load-bearing function into multiple components: the vertical plate, the horizontal plate, and the linear guide. By segmenting the structural support system, the design achieves rigidity through distributed support rather than relying on a single thickened component, thus avoiding increase in device size.
Solution Approach 2:
The linear guide acts as an intermediary element that provides external support to the horizontal plate, enabling the vertical plate to maintain adequate thickness without compromising rigidity. The linear guide mediates between the structure and the beam, providing the necessary support function without requiring the vertical plate to be thickened.
2Strength
If the vertical plate is thickened to maintain structural integrity, then the rigidity is improved, but the lifespan of linear guides and guide nuts is reduced due to increased load
Solution Approach 1:
The load is segmented and distributed across multiple components including the vertical plate, horizontal plate, and linear guide. This segmentation prevents concentration of load on the linear guide, thereby extending its lifespan while maintaining structural integrity through adequate plate thickness.
Solution Approach 2:
The linear guide serves as an intermediary that provides support without bearing the full load. By positioning the linear guide as a supporting element rather than a load-bearing element, the system maintains structural integrity through the plate configuration while reducing the load on the linear guide and guide nuts, thus extending their lifespan.
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 configuration enhances the compactness of the moving device while maintaining structural integrity and durability, improving weight balance and reducing stress concentration, thus extending the lifespan of guide nuts and linear guides.
Implementation Method 1
a linear motor including a linear motor movable element vertically equipped on a side surface opposite to the beam of the vertical plate via a spacer plate and a linear motor stator positioned outside the linear motor movable element
Data Source
AI summary
A moving device includes a first linear guide, a second linear guide to extend in parallel with the first linear guide, a first structure movable along the first linear guide, a second structure movable along the second linear guide, a slide member of which a first end is fixed to the first structure and a second end is fixed to the second structure so that the slide member is bridged between the first structure and the second structure, a first linear motor having a first stator installed to extend along the first linear guide and a first movable element fixed to the first structure to face the first stator at a predetermined interval, and a second linear motor having a second stator installed to extend along the second linear guide and a second movable element fixed to the second structure to face the second stator at a predetermined interval.