Guide Rail Eccentric Adjustment for Joint Misalignment
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Solution Overview
Problem
Conventional methods for connecting divided rails in guide devices often result in misalignment and vibration due to level differences, especially in modular systems, requiring complex and time-consuming adjustments with shims or eccentric bolts, which are not effective for fine adjustments.
Innovation Solution
A guide device with a rail featuring a recessed portion that receives an eccentric part to apply force orthogonally, allowing for elastic deformation and correction of rail bending, reducing misalignment and improving smooth carriage movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rails are connected using conventional methods with strong pressing force, then the rails are fixed securely, but level differences at connecting portions cause misalignment and vibration
Solution Approach 1:
The invention changes the pressing force parameter by introducing an eccentric pressing mechanism that applies localized force at specific positions (near the connecting portions) rather than uniform strong pressing across the entire rail. This allows secure fixing while maintaining alignment precision by preventing level differences at critical connecting areas.
Solution Approach 2:
The invention introduces intermediate pressing portions as mediators between the fastening mechanism and the rail. These intermediate portions transmit and distribute the pressing force appropriately, ensuring that the rail is securely fixed without creating misalignment at the connecting portions.
2Manufacturing precision
If shims are inserted for fine adjustment of rail alignment, then misalignment is corrected, but the adjustment work becomes very complicated and time-consuming
Solution Approach 1:
The invention enables the rail fastening system to self-adjust alignment during the normal fastening process. The eccentric pressing mechanism automatically compensates for level differences and misalignment as the rail is being secured, eliminating the need for separate time-consuming shim insertion and adjustment operations.
Solution Approach 2:
The invention performs alignment correction as a preliminary action during the fastening process itself, before the rail is fully secured. The eccentric pressing mechanism pre-adjusts the rail position and eliminates level differences at connecting portions during installation, preventing misalignment issues before they affect operation.
3Ease of operation
If the through hole diameter is made larger to facilitate assembly, then assembly is easier, but the structural integrity and precision of the rail is compromised
Solution Approach 1:
The invention applies local quality by creating a recessed portion at the specific location where the eccentric pressing mechanism acts, while keeping the rest of the rail structure intact with appropriate hole dimensions. This localized modification facilitates the pressing operation without compromising the overall structural integrity and precision of the rail.
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
The solution effectively reduces misalignment and vibration by allowing for precise adjustment of rail joints, enabling smoother carriage movement and simplifying the correction of rail bending, even in modular systems.
Implementation Method 1
an eccentric part that rotates eccentrically with respect to a reference axis orthogonal to the mounting surface to apply a force to the third surface in the width direction of the rail
Implementation Method 2
elastic deformation of the tips of rails can reduce misalignment or shift of a joint between the rails
Data Source
AI summary
A guide device (1) is equipped with a rail (12) having a first surface (121) in contact with a mounting surface (111B), a second surface (122) opposite the first surface (121), a through hole (126) penetrating between the first surface (121) and the second surface (122), and a recessed portion (1260) that is an opening on a first surface (121) side of the through hole (126) and is formed to be recessed from the first surface (121) toward the second surface (122), wherein the recessed portion (1260) includes a third surface (1261) that is a surface orthogonal to the first surface (121) and orthogonal to a width direction of the rail (12); the recessed portion (1260) receives an eccentric part (141) that rotates eccentrically with respect to a reference axis orthogonal to the mounting surface (111B) to apply a force to the third surface (1261) in the width direction of the rail (12); and the through hole (126) has a diameter shorter than a length of the recessed portion (1260) in the width direction.