Linear Guideway Circulator Seamless Corner Channel
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Solution Overview
Problem
Conventional miniature linear guideways face issues due to altitude differences between corner portions and adjacent slider surfaces, which hinder smooth rolling of spherical rollers.
Innovation Solution
The design incorporates elongated rails with sliders having grooves and circulators with connecting surfaces that seamlessly connect to the inner loading surfaces, eliminating altitude differences and allowing smooth roller movement by extending corner portions into retaining troughs on end caps, forming a seamless circulation channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If circulators are directly pressed onto the slider, then installation is simplified, but altitude differences cause poor rolling performance
Solution Approach 1:
The circulator is divided into multiple parts: a body portion and corner portions. The corner portions are separable and can be inserted into retaining troughs on the slider, while the body portion defines the rolling channel. This segmentation allows the circulator to be installed without direct pressing, eliminating altitude differences and ensuring smooth rolling.
Solution Approach 2:
The corner portions of the circulator are inserted into retaining troughs that are recessed into the slider. This nesting structure allows the circulator components to be integrated into the slider without creating altitude differences, as the corner portions sit within the slider surface rather than protruding from it.
2Reliability
If corner portions are extended into retaining troughs, then rolling smoothness is improved, but device complexity increases
Solution Approach 1:
The corner portions of the circulator are combined with the retaining troughs on the slider to form an integrated corner channel structure. This merging eliminates the need for separate retention mechanisms while ensuring smooth rolling, as the corner portions and retaining troughs cooperatively define the corner channel without creating altitude differences.
3Measurement precision
If connecting surfaces are seamlessly connected to inner loading surfaces, then rolling accuracy is improved, but manufacturing precision requirements increase
Solution Approach 1:
The connecting surfaces of the circulator's corner portions are designed to be seamlessly connected to the inner loading surfaces of the slider, creating an equipotential surface for the spherical rollers. This eliminates altitude differences that would cause the rollers to jump or bind, ensuring accurate and smooth rolling motion.
Data Source
AI summary
A channel module of a linear guideway includes a slider, two circulators, and two wire holders. The slider has two opposite inner loading surfaces. The circulators are respectively installed on two opposite sides of the slider and respectively connected to the inner loading surfaces. Each circulator includes an outer loading surface and two corner portions respectively extended from two opposite ends of the outer loading surface to two opposite ends of the corresponding inner loading surface. Each corner portion has a corner surface and a connecting surface. In each corner portion, an altitude difference is formed between an end of the corner surface connected to the connecting surface and the adjacent inner loading surface. The connecting surface is connected to the corresponding inner loading surface seamlessly for eliminating the altitude difference. The wire holders are respectively arranged adjacent to the inner loading surfaces.