Adjustable Magnetic Counterbalance for Consistent Linear Stage Force
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Solution Overview
Problem
Conventional linear motion systems with magnetic counterbalances face inconsistencies in counterbalance force due to manufacturing variations and component inconsistencies, leading to inefficiencies and increased power consumption, especially when handling varying payloads and during power outages.
Innovation Solution
An adjustable magnetic counterbalance system that allows for the adjustment of counterbalance force by varying the relative alignment of magnetic poles or the distance between magnets within ferromagnetic tubes, enabling consistent force across the travel range and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional magnetic counterbalance systems are used with fixed magnet positions, then the structure is simple and easy to manufacture, but the counterbalance force becomes inconsistent due to manufacturing variations and component inconsistencies
Solution Approach 1:
The patent makes the magnet position adjustable rather than fixed, allowing the system to adapt to different conditions. The magnet can be repositioned along the linear motion axis to optimize counterbalance performance, transforming a static configuration into a dynamic one that can compensate for manufacturing variations.
Solution Approach 2:
The patent changes the position parameter of the magnet relative to the ferromagnetic tube to optimize counterbalance force. By adjusting the magnet's location, the system can fine-tune the magnetic interaction strength and distribution, thereby achieving more consistent counterbalance forces despite manufacturing tolerances.
2Use of energy by moving object
If fixed magnet alignment is used in counterbalance systems, then the device is simpler to operate, but power consumption increases due to inconsistencies requiring compensation
Solution Approach 1:
The adjustable magnet position allows the system to be optimized for specific operating conditions, reducing energy waste. By dynamically positioning the magnet to achieve optimal counterbalance, the system minimizes the energy required to compensate for force inconsistencies during operation.
Solution Approach 2:
The magnet position can be pre-adjusted to match expected operating conditions, such as typical payload weights or travel ranges. This preliminary optimization reduces the need for active compensation during operation, thereby lowering power consumption.
3Adaptability or versatility
If conventional fixed counterbalance systems are used, then the system is more reliable in terms of component simplicity, but performance degrades when handling varying payloads
Solution Approach 1:
The adjustable magnet position enables the system to adapt to varying payloads by repositioning the magnet to maintain optimal counterbalance forces. This dynamic adjustment capability ensures consistent performance across different loading conditions while maintaining system reliability.
Solution Approach 2:
The adjustable magnet configuration allows a single counterbalance system to handle multiple payload scenarios effectively. By varying the magnet position, the same system can optimize performance for different weight ranges and application requirements, enhancing versatility without sacrificing reliability.
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 adjustable counterbalance system achieves greater than 50% reduction in inconsistencies and unnecessary power/heat, allowing for optimal performance and safe payload positioning across different configurations and power conditions.
Implementation Method 1
a cylindrical magnet that is polarized N→S across the diameter is arranged so that it can move within a ferromagnetic steel tube along a linear axis at various positions. The magnet is attracted to the tube
Implementation Method 2
Embodiments of the disclosure balance the forces of gravity on linear stages (when oriented in the vertical direction) using a magnetic counter balance
Data Source
AI summary
An adjustable magnetic counterbalance assembly wherein a counterbalance force of the adjustable magnetic counterbalance is adjustable. The adjustable magnetic counterbalance assembly includes at least one ferromagnetic tube; a magnet disposed in the at least one ferromagnetic tube and configured to be axially movable and wherein the magnet is configured to be rotationally movable relative to the respective at least one ferromagnetic tube; wherein the counterbalance force is configured to be adjustable by adjusting the rotational position between the magnet and a respective ferromagnetic tube to change the polar alignment of the magnet. Alternatively, the adjustable magnetic counterbalance assembly changes the counterbalance force based on the relative alignment of the poles of one magnet to an adjacent one.