Motion Guide Rail Structure That Prevents Separation Under Load
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Solution Overview
Problem
Conventional motion guide devices become larger to withstand strong external loads, limiting their compactness and versatility in modern industrial applications.
Innovation Solution
A compact motion guide device design featuring a track rail and movable block with circular arc ball grooves, recesses, and holding protrusions that maintain contact and stability under external loads, preventing separation and allowing smooth movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the size of the motion guide device is increased to withstand strong external loads, then the load-bearing capacity is improved, but the compactness deteriorates
Solution Approach 1:
The circulation passage is arranged in a nested configuration where the rolling member return passage and loaded rolling member rolling passage are positioned adjacent to each other, with turnabout passages connecting them in a compact U-shaped or curved arrangement. This nesting allows the circulation passage to follow the longitudinal direction of the track rail closely, reducing the overall device size while maintaining load-bearing capacity through proper structural support.
Solution Approach 2:
The circulation passage is designed to extend primarily in the longitudinal direction of the track rail, utilizing the length dimension rather than expanding in width or height. The turnabout passages are positioned to connect the parallel passages efficiently along the longitudinal axis, creating a compact configuration that withstands external loads without increasing device volume.
2Reliability
If the size of the motion guide device is increased to withstand strong external loads, then the reliability under load is improved, but the adaptability to compact spaces deteriorates
Solution Approach 1:
The circulation passage components are nested in a compact arrangement that follows the longitudinal direction of the track rail. The turnabout passages connect the parallel passages in a space-efficient manner, allowing the device to maintain high reliability under external loads while being adaptable to compact installation spaces in modern industrial applications.
Solution Approach 2:
By orienting the circulation passage to extend primarily in the longitudinal direction and using turnabout passages positioned to connect parallel passages along this axis, the device achieves both high reliability under load and adaptability to compact spaces, expanding its range of application in modern industry.
3Volume of moving object
If the circulation passage is arranged to extend in the longitudinal direction, then the device compactness is improved, but the complexity of ensuring smooth rolling motion deteriorates
Solution Approach 1:
The circulation passage is arranged with the rolling member return passage and loaded rolling member rolling passage extending parallel to each other in the longitudinal direction, connected by turnabout passages. This nested configuration maintains device compactness while ensuring smooth rolling motion through proper alignment and spacing of the passages, reducing the complexity of motion control.
Solution Approach 2:
The circulation passage utilizes the longitudinal dimension of the track rail to extend the parallel passages, with turnabout passages positioned to connect them efficiently. This arrangement achieves compactness while maintaining simple rolling motion characteristics, as the parallel configuration allows balls to roll smoothly without complex directional changes.
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 a compact motion guide device capable of withstanding strong external loads while maintaining functionality, preventing separation of the track rail and movable block, and ensuring smooth operation.
Implementation Method 1
A plurality of rolling members for reducing frictional resistance are interposed between the track rail and the movable block so as to be capable of rolling motion
Data Source
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AI summary
In this motion guide device (10), a track member (20) has a recess or protrusion (51) that is formed in a longitudinal direction, and a moving member (30) has a holding protrusion or holding recess (53) that corresponds to the recess or protrusion (51) formed in the track member (20). When force is applied in a direction that would cause relative separation of the moving member (30) and the track member (20), the holding protrusion or holding recess (53) holds onto the recess or protrusion (51) such that the moving member (30) and the track member (20) are unable to be separated. With this configuration, a motion guide device that is both compact and capable of withstanding a strong external load can be obtained.