Guide Apparatus Foreign Matter Entry Preventing Plates
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Solution Overview
Problem
Guide apparatuses fail to prevent foreign matter, such as fine dust particles, from entering the moving block through gaps between the track rail and moving block surfaces when used in environments with flying dust particles, leading to potential rolling element failure.
Innovation Solution
The guide apparatus features foreign matter entry preventing plates with flexible and rigid components that close gaps between the track rail and moving block surfaces, ensuring no foreign matter enters, and includes self-lubricating capabilities to maintain smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the guide apparatus is used in inverted or wall-hung positions, then the guide apparatus can be installed in various orientations, but foreign matter enters the moving block through gaps between the track rail and moving block surfaces
Solution Approach 1:
The sealing function is segmented into multiple components: seals at the end plates and foreign matter entry preventing plates at the side surfaces. This segmentation allows each component to address specific gap areas, effectively preventing foreign matter entry from all directions while maintaining installation versatility
Solution Approach 2:
Foreign matter entry preventing plates are introduced as intermediary components between the track rail and moving block side surfaces. These plates act as mediators that close the gaps without interfering with the relative movement function, thus preventing foreign matter entry while maintaining operational adaptability
2Reliability
If seals are attached to the moving block, then foreign matter entry is prevented in horizontal positions, but foreign matter enters through gaps in inverted or wall-hung positions
Solution Approach 1:
The foreign matter entry preventing plates are designed to perform multiple functions: sealing the side gaps in horizontal positions, preventing foreign matter entry in inverted positions, and maintaining functionality across all installation orientations. This multi-functionality resolves the contradiction between reliability and adaptability
3Adaptability or versatility
If the guide apparatus operates in dusty environments, then the guide apparatus can function in various applications, but rolling elements fail due to foreign matter contamination
Solution Approach 1:
Foreign matter entry preventing plates are installed in advance to block the entry path of dust particles and foreign matter before they can reach the rolling elements. This preliminary protective action prevents contamination and maintains rolling element performance in dusty environments while preserving environmental adaptability
Data Source
AI summary
A guide apparatus including a track rail and a moving block is free from the possibility of foreign matter entering the moving block through the gaps between the side surfaces of the track rail and the inner side surfaces of the moving block even in an environment where many fine dust particles are flying.A guide apparatus has a track rail and a moving block 20 relatively movably attached to the track rail with rolling elements interposed therebetween. The rolling elements recirculate through rolling element recirculation passages. Foreign matter entry preventing plates 34 are provided so that their respective distal ends longitudinally contact the opposite side surfaces of the track rail to close the gaps between the side surfaces of the track rail and at least the inner side surfaces of skirt portions on both sides of a moving block body 21 and the inner side surfaces of end plates of the moving block 20.