Arc-Shaped Guiding Block for Linear Guideway Spacer Stability
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Solution Overview
Problem
Conventional synchronous spacers in linear guideways experience interference and instability due to angular edges and mismatched sizes of spacer elements and links, leading to friction, noise, and deviation from the predetermined path for rolling elements.
Innovation Solution
A synchronous spacer with guiding blocks featuring an arc-shaped surface, larger than spacer elements but smaller than rolling elements, is integrated into the design to prevent impact and guide the spacer smoothly along the linear guideway, ensuring stable operation and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional synchronous spacers with angular edges and mismatched sizes are used, then the spacer structure can be simple and easy to manufacture, but the spacer elements will impact the inner surface of the track causing interference and instability
Solution Approach 1:
The patent applies curvature by replacing the angular edges of conventional spacers with an arc-shaped guiding block. The guiding block has an arc-shaped surface that matches the curvature of the track's inner surface, allowing the spacer to move smoothly along the track without impacting it. This curved design eliminates the interference problems caused by angular edges while maintaining manufacturing feasibility.
2Manufacturing precision
If spacer elements are made smaller to fit within the guideway, then they can separate rolling elements effectively, but they cannot guide the spacer smoothly along the predetermined path
Solution Approach 1:
The patent introduces the guiding block as an intermediary component between the spacer elements and the track. The guiding block, with its arc-shaped surface, acts as a mediator that interfaces with the track's inner surface to guide the spacer's movement. This intermediary structure enables smooth guidance along the predetermined path while the smaller spacer elements continue to perform their function of separating rolling elements.
3Strength
If the link is made larger than the spacer elements, then it can provide structural support, but it causes interference at the connecting portion between the return portion and circulating groove
Solution Approach 1:
The patent applies curvature to the guiding block, which is integrated with the link structure. The arc-shaped surface of the guiding block allows the larger link to navigate the connecting portion between the return portion and circulating groove smoothly, eliminating impact interference while maintaining the structural support function provided by the larger link size.
Data Source
AI summary
A synchronous spacer with a guiding block comprises strip-shaped links, a plurality of spacer elements, and a guiding block fixed at the end of the links. An arch-shaped surface is formed on the guiding block and is located correspondingly to inner surface of the track of the linear guideway, the guiding block is larger than spacer element of the synchronous spacer but is smaller than the rolling elements. With the guidance of the guiding block, the synchronous spacer is prevented from impacting the inner surface of the track, enabling the linear guideway to move smoothly and stably.