Linear Guide Slider Positioning Without Drilling
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Solution Overview
Problem
The manufacturing cost of linear guides increases due to the need for multiple positioning holes on metal slider blocks to accurately position rolling element circulation members, which is costly and inefficient.
Innovation Solution
A motion device design featuring a track rail, a movable slider block, and rolling elements with connection sections and accommodation surfaces that allow for the rolling elements to be rotatably connected to the slider block, eliminating the need for positioning holes by using a combination of abutting surfaces to restrict rotation and ensure accurate positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple positioning holes are formed on the end surface of the metal slider block to accurately position the rolling element circulation member, then the positioning accuracy is improved, but the manufacturing cost increases
Solution Approach 1:
The invention extracts the positioning function from the slider block by using a positioning protrusion on the rolling element circulation member that fits into a positioning hole in the fixing member. This separates the positioning requirement from the expensive metal slider block, eliminating the need for multiple positioning holes in the block itself while maintaining accurate positioning.
Solution Approach 2:
The fixing member acts as an intermediary between the slider block and the rolling element circulation member. It provides the positioning hole that receives the positioning protrusion, thereby achieving accurate positioning without requiring positioning holes in the slider block. This intermediary structure simplifies the manufacturing of the slider block while maintaining positioning accuracy.
2Reliability
If multiple positioning holes are formed on the end surface of the slider block to prevent rotation of the rolling element circulation member, then the reliability of positioning is improved, but the device complexity increases
Solution Approach 1:
The positioning and anti-rotation function is extracted from the slider block and transferred to the fixing member. The positioning protrusion on the rolling element circulation member engages with the positioning hole in the fixing member, providing both positioning and rotational constraint without requiring multiple holes in the slider block.
Solution Approach 2:
The fixing member combines multiple functions: it secures the rolling element circulation member to the slider block, provides positioning through the positioning hole, and prevents rotation through the engagement of the positioning protrusion. This consolidation of functions into a single component reduces overall structural complexity.
Data Source
AI summary
A motion device includes a track rail, a moving body, rolling elements, fixing members each fixed to an end surface of the moving body, and rolling element circulation members arranged between the moving body and the fixing members. The rolling element circulation members each have a connection section connected to the moving body so as to be rotatable about a Y direction, and a pair of first outside surfaces. The fixing members each have accommodation sections to accommodate the rolling element circulation members, and a pair of first inside surfaces closely contact with the pair of first outside surfaces. The respective rolling element circulation members and the accommodation sections are provided at both sides of the track rail interposed there between.