Switchable Magnetic Coupling for Adjustable Workpiece Holding
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Solution Overview
Problem
Existing magnetic coupling devices struggle to provide a flexible and efficient magnetic coupling solution for ferromagnetic workpieces, particularly in terms of adjustable magnetic flux and compatibility with various workpiece sizes and materials.
Innovation Solution
A magnetic coupling device comprising a housing, a switchable magnetic flux source with at least one permanent magnet and one ferromagnetic core, and multiple pole portions with workpiece engagement surfaces. The switchable magnetic flux source is rotatable and adjustable, allowing for varying magnetic flux strengths, including partial ON states, to accommodate different workpiece requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed magnetic flux source is used, then the device structure is simple, but the magnetic coupling strength cannot be adjusted for different workpiece requirements
Solution Approach 1:
The patent implements a switchable magnetic flux source that can dynamically change between ON and OFF states, and between different flux strengths. The permanent magnet assembly can be rotated to different angular positions to vary the magnetic flux output, transforming a static magnetic system into a dynamic one that adapts to different workpiece coupling requirements.
Solution Approach 2:
The magnetic flux source is divided into multiple permanent magnets arranged in segments around the ferromagnetic core. These segmented magnets can be independently positioned or rotated, allowing granular control over the magnetic flux distribution and strength, enabling flexible adaptation to various workpiece sizes and materials.
2Adaptability or versatility
If a single magnetic flux strength is provided, then the device structure is simple, but it cannot accommodate ferromagnetic workpieces of varying sizes and materials
Solution Approach 1:
The rotatable permanent magnet assembly enables dynamic adjustment of magnetic flux strength to match different workpiece sizes and materials. By rotating the magnet assembly to different angular positions, the system can optimize the magnetic coupling for small or large workpieces, or for different ferromagnetic materials with varying magnetic permeability.
Solution Approach 2:
The patent changes the magnetic flux parameter by rotating the permanent magnet assembly to different angular positions. This parameter change allows the same device to provide appropriate magnetic coupling strength for various workpiece sizes and materials, from light gauge steel to heavy structural steel.
3Ease of operation
If the magnetic flux source is non-switchable, then the device is simpler to operate, but it cannot provide precise control of magnetic strength for different operational states
Solution Approach 1:
The switchable magnetic flux source with ON and OFF states, plus intermediate angular positions, provides discrete operational modes that are easy to control. The rotation mechanism allows operators to select from predefined magnetic flux states (fully on, fully off, or intermediate positions) without complex continuous control systems.
Solution Approach 2:
The patent provides partial ON states by positioning the permanent magnet assembly at intermediate angular positions between fully engaged and fully disengaged. This allows operators to apply just the right amount of magnetic coupling needed for each workpiece, avoiding excessive magnetic force that could damage the workpiece or require stronger release mechanisms.
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 device achieves efficient and flexible magnetic coupling by providing adjustable magnetic flux, enabling secure coupling with ferromagnetic workpieces of varying sizes and materials, while also allowing for precise control of magnetic strength through different operational states.
Implementation Method 1
a magnetic coupling device for magnetically coupling to a ferromagnetic workpiece
Implementation Method 2
at least one ferromagnetic core
Data Source
AI summary
Magnetic coupling devices are disclosed. The magnetic coupling devices may include at least one permanent magnet and at least one ferromagnetic core. The at least one permanent magnet may surround the at least one ferromagnetic core.