Magnetic Handling Device for High-Temperature Vacuum Environments
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Solution Overview
Problem
Magnetic handling devices face constraints due to bulkiness and mechanical coupling issues, particularly with bearings, which hinder handling of payloads in high-temperature and polluted environments, such as vacuum chambers and annealing furnaces.
Innovation Solution
A magnetic handling device featuring a tubular case made of non-magnetic material with a ferromagnetic armature and a magnetic system that generates radial and return forces, eliminating the need for bearings and allowing for significant payload handling without mechanical clearance, suitable for high-temperature and polluted environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional magnetic sticks with bearings are used, then mechanical guidance is provided, but the device becomes bulky and unsuitable for high-temperature environments
Solution Approach 1:
The patent removes the bearing component from the magnetic stick design. By extracting the bearing, the device eliminates the mechanical clearance and mechanical coupling issues that limited temperature operation, while also reducing the overall bulk of the device. The magnetic coupling directly transmits motion without intermediate mechanical components.
Solution Approach 2:
The patent replaces the mechanical bearing system with a magnetic field-based guidance system. The tubular case with magnetized segments creates magnetic fields that guide and center the ferromagnetic rod without physical contact, substituting mechanical guidance with magnetic field interaction. This allows operation in high-temperature environments where mechanical bearings would fail.
2Manufacturing precision
If bearings are used for mechanical guidance, then the shaft can be guided, but mechanical clearance causes loss of precision and increased bulk
Solution Approach 1:
The patent replaces mechanical bearings with magnetic field-based positioning. The magnetized segments in the tubular case create radial magnetic fields that continuously center the ferromagnetic rod, eliminating mechanical clearance and providing precise positioning without the bulk of bearing assemblies.
Solution Approach 2:
The patent changes the operational parameters by using magnetic field strength and distribution to control positioning precision. By adjusting the magnetization of the tubular case segments, the system achieves precise radial positioning of the rod without mechanical contact, eliminating the trade-off between precision and bulk.
3Reliability
If mechanical coupling is used to transmit motion, then force transmission is achieved, but the device becomes complex and less reliable in harsh environments
Solution Approach 1:
The patent merges the functions of motion transmission and magnetic coupling into a single integrated system. The ferromagnetic rod and magnetized tubular case work together as a unified magnetic mechanism, eliminating separate mechanical coupling components and reducing overall system complexity while improving reliability in harsh environments.
Solution Approach 2:
The patent replaces complex mechanical coupling systems with direct magnetic field interaction. The magnetic forces between the magnetized tubular case and ferromagnetic rod transmit motion and force without mechanical intermediaries, simplifying the system and improving reliability by eliminating mechanical wear and failure points.
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
Enables robust and efficient handling of payloads in high-temperature and polluted environments without the constraints of traditional bearing systems, improving payload capacity and reducing the risk of contamination in ultra-high vacuum applications.
Implementation Method 1
an actuator arranged outside the tubular case, comprising a plurality of magnets forming a magnetic system with the ferromagnetic armature, the actuator being configured to make the ferromagnetic armature slide according to the longitudinal axis of the tubular case
Implementation Method 2
a ferromagnetic armature slidably arranged in the tubular case
Implementation Method 3
Guidance of the ferromagnetic armature, and therefore of the handling shaft coupled thereto, while bearing on the sliding faces allows suppressing the mechanical operating clearance of the handling shaft
Data Source
AI summary
A magnetic handling device for handling an object in a workspace, the device including a tubular case of a non-magnetic or weakly magnetic material, including adjacent sliding faces, a first end of the tubular case open and in communication with the workspace, a ferromagnetic armature slidably arranged in the tubular case according to the longitudinal axis of the tubular case, a handling shaft extending through the tubular case, the handling shaft coupled to the ferromagnetic armature to slide toward or in the workspace, an actuator outside the tubular case, including magnets forming a magnetic system with the ferromagnetic armature, the actuator configured to make the ferromagnetic armature slide according to the tubular case longitudinal axis, actuator inner surfaces and outer surfaces of the ferromagnetic armature configured to match with the sliding faces, the ferromagnetic armature configured to be pressed on the sliding faces of the tubular case by the magnets.