Workpiece Positioning Arrangement With Magnetic Decoupling
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Solution Overview
Problem
Existing workpiece positioning systems face challenges in maintaining stability and precision due to vibrations caused by dynamic reaction forces and accelerations, particularly when processing small microstructures, as these systems often rely on mechanical decoupling methods that inadequately address high traveling rates or accelerations.
Innovation Solution
A workpiece positioning arrangement with a decoupling device that allows the carrier element to move freely in a sliding manner, minimizing counterforces and enabling complete decoupling of dynamic reaction forces from the base element, thereby enhancing stability and precision, especially by using fluid films for smooth displacement and reducing friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If mechanical decoupling devices are used to reduce vibrations, then vibration damping is improved, but the ability to handle high accelerations and traveling rates is limited
Solution Approach 1:
The patent replaces traditional mechanical decoupling devices (springs, dampers) with a magnetic field-based active decoupling system. Magnets arranged in alternating polarity patterns create magnetic fields that actively counteract vibrations and dynamic reaction forces, enabling the system to handle high accelerations and traveling rates without the mechanical constraints of physical decoupling elements.
Solution Approach 2:
The patent dynamically adjusts magnetic field parameters (strength, distribution, polarity) in response to detected vibrations and acceleration levels. By changing magnetic field characteristics in real-time, the system adapts to varying operating conditions including high traveling rates and accelerations, maintaining effective vibration compensation across the full operational range.
2Stability of the object's composition
If active stabilizing devices are added between base element and carrier element, then stability is improved, but counterforces enhance vibrations and impair positioning precision
Solution Approach 1:
The patent eliminates mechanical stabilizing devices (springs, dampers, mechanical linkages) and replaces them with a magnetic field-based active stabilization system. Magnets create fields that stabilize the carrier element's position without physical contact, avoiding the generation of counterforces that would otherwise interfere with positioning precision.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary between the base element and carrier element. The magnetic field acts as a non-contact mediator that provides stabilizing forces without the mechanical coupling that generates harmful counterforces, thus maintaining positioning precision while achieving stability.
3Strength
If the carrier element is rigidly fixed to the base element, then structural stability is improved, but dynamic reaction forces are transmitted and reduce positioning accuracy
Solution Approach 1:
The patent replaces rigid mechanical fixation with magnetic field-based coupling. Magnets arranged in alternating polarity patterns create magnetic fields that hold the carrier element stable while allowing dynamic reaction forces to be actively compensated rather than transmitted, maintaining both structural stability and positioning accuracy.
Solution Approach 2:
The patent transitions from static rigid fixation to dynamic magnetic coupling. The magnetic field system continuously adapts to dynamic conditions, adjusting field strength and distribution to maintain stable coupling while compensating for dynamic reaction forces during acceleration and movement, thereby preserving positioning accuracy.
4Device complexity
If friction-based decoupling is used between carrier element and base element, then simplicity is improved, but frictional counterforces reduce decoupling effectiveness
Solution Approach 1:
The patent replaces friction-based mechanical decoupling with magnetic field-based decoupling. Magnets create fields that provide decoupling forces without physical contact or friction, eliminating frictional counterforces while maintaining decoupling effectiveness. The system remains relatively simple in structure despite the advanced physics involved.
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
This configuration significantly increases processing rates and throughput while minimizing actuator-induced vibrations, ensuring high stability and precision during dynamic movements, and reduces maintenance and operational costs.
Implementation Method 1
the carrier element is supported so that it can move freely at least in a certain range, preferably essentially free of counterforces, in a sliding manner
Data Source
AI summary
A workpiece positioning arrangement comprises a positioning device for positioning a workpiece as well as a decoupling device for the decoupled storage of the positioning device, wherein the decoupling device comprises a carrier element, on which the positioning device is arranged, and a base element, on which the carrier element is supported. For decoupling the dynamic reaction forces of the positioning device on the base element, the carrier element is supported on the base element so as to move freely at least in a certain range, preferably essentially free of counterforces, in a sliding manner.