Miniature Linear Guideway Retainer Structure for Automatic Assembly
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Solution Overview
Problem
Existing miniature linear guideways face challenges in assembly efficiency and production capacity due to small size and manual assembly, with retainers being difficult to handle and assemble, leading to poor holding effects and increased costs.
Innovation Solution
A miniature linear guideway design featuring a rail, slider, circulation fittings, balls, and a retainer with specific grooves and convex portions that allow for easy assembly by pressing the retainer in a single direction, improving structural strength and positioning, and reducing assembly resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the retainer is made as a small steel wire with arc-shaped locking portions, then the structure can be compact, but it becomes difficult to take and align, requiring certain force to press in
Solution Approach 1:
The retainer is divided into a plate portion and two retaining portions connected by positioning portions, allowing each segment to serve specific functions (positioning, retaining) while maintaining overall compactness
Solution Approach 2:
The retainer transitions from a two-dimensional wire configuration to a three-dimensional structure with plate portion extending in multiple directions, enabling better spatial arrangement and alignment during assembly
2Force
If the retainer is pressed in at an inclined angle to reduce assembly resistance, then assembly resistance is reduced, but the retainer itself is too small and difficult to take
Solution Approach 1:
The guide surface is designed with an inclined angle that creates a smooth transition zone, equalizing the force distribution during assembly and reducing peak resistance while maintaining ease of handling
3Adaptability or versatility
If the retainer is made as a multi-segment curved configuration, then the structure can be flexible, but it is easily entangled and requires additional separation steps
Solution Approach 1:
The retainer is segmented into distinct functional portions (plate portion, retaining portions, positioning portions) that are connected but can be independently positioned, reducing entanglement while maintaining flexibility
Solution Approach 2:
The positioning portions are pre-configured to automatically align with corresponding features during assembly, eliminating the need for additional separation or alignment steps
4Ease of manufacture
If manual assembly is used for miniature linear guideway, then assembly can be performed with simple tools, but assembly efficiency and production capacity are limited
Solution Approach 1:
The retainer's positioning portions and guide surfaces are designed to automatically guide alignment and positioning during assembly, enabling automated assembly systems to perform the task without complex fixtures or alignment procedures
Data Source
AI summary
A miniature linear guideway includes a rail, a slider, two circulation fittings and a retainer. The slider and the circulation fitting are set on the rail, so that a circulation channel is formed between the rail and the slider for the balls to run. The circulation fitting has several turning convex portions. The retainer has a plate portion and two retaining portions. The two ends of each retaining portion are connected to the plate portion by a positioning portion, and the plate portion is adjacent to the slider. The positioning portions of the retainer abut the turning convex portions. The width of the plate portion of the retainer is smaller than the distance between the turning convex portions of the circulation fitting. Thereby, the miniature linear guideway of the present invention can optimize the assembly efficiency, thereby realizing the purpose of automatic assembly.