Concave Roller Guide Assembly for Linear Motor Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Linear motor systems are sensitive to misalignment between the translator and stator, leading to radial loads and increased friction due to conventional guide systems, which can result in uneven wear and system failure.
Innovation Solution
A guide assembly featuring an annular guide body with roller assemblies, where annular rollers with concave outer surfaces rotate around pins and make contact with the translator, reducing friction and allowing for lubrication, thereby maintaining coaxial alignment and minimizing wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional guide systems are used, then the structure is simple, but friction increases and wear becomes uneven
Solution Approach 1:
The guide system employs annular rollers with concave outer surfaces that conform to the cylindrical translator surface. This curved geometry transforms sliding friction into rolling friction, significantly reducing friction forces and preventing uneven wear while maintaining system reliability
Solution Approach 2:
The patent replaces conventional sliding contact guide systems with a rolling contact system using annular rollers. This mechanical substitution eliminates direct sliding between guide surfaces, reducing friction and wear to maintain long-term system reliability
2Force
If misalignment occurs between translator and stator, then radial load increases, but friction at guide bearings increases
Solution Approach 1:
The concave outer surfaces of the annular rollers are designed to match the cylindrical geometry of the translator. This curved contact surface distributes radial loads more evenly across the roller-contact interface, preventing concentration of stress and reducing friction even when misalignment occurs
Solution Approach 2:
The annular rollers act as intermediary elements between the translator and guide body. These rollers absorb and distribute radial loads generated by misalignment, preventing direct transmission of high friction forces to the guide bearings
3Loss of energy
If rolling contact is implemented with concave rollers, then friction is reduced, but device complexity increases
Solution Approach 1:
The guide assembly merges multiple functions into integrated components. The annular rollers combine guiding, load-bearing, and low-friction rolling functions in a single element, reducing the need for separate components while achieving friction reduction
Solution Approach 2:
The annular rollers serve multiple functions simultaneously: they provide guiding contact, support radial loads, enable rolling motion to reduce friction, and maintain coaxial alignment. This multi-functionality reduces the need for additional specialized components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The guide assembly significantly reduces friction and wear by using rolling contact with concave rollers, maintaining coaxial positioning of the translator and reducing the risk of system failure due to radial loads, while enabling lubrication within the closed bearing system.
Implementation Method 1
A guide assembly featuring an annular guide body with roller assemblies, where annular rollers with concave outer surfaces rotate around pins and make contact with the translator, reducing friction
Implementation Method 2
As soon as there is any misalignment between the stator and the translator, a magnetic attraction causes a radial load on the translator
Data Source
AI summary
A guide assembly includes an annular guide body defining a cavity, and a plurality of roller assemblies mounted within the guide body. Each roller assembly includes an annular roller mounted onto a pin and arranged to rotate around the pin. The pins are arranged such that their axes define a ring around the interior of the guide body and the annular rollers arranged to protrude through respective openings in the guide body into the cavity. Each annular roller has a concave outer surface.