Planar-Coil Multi-Axis Robot for Compact Precision Probe Positioning
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Solution Overview
Problem
Existing multi-axis robots are large, complex, and expensive, making them unsuitable for small-scale applications, and require high voltage power supplies and ancillary hydraulic systems, which are not feasible for smaller businesses and individuals.
Innovation Solution
A multi-axis robot device with a base and displaceable feet connected by linkages and a coupling arm, utilizing electromagnetic coils for precise positioning and orientation, allowing manipulation in five axes, including x, y, z, yaw, and pitch, and enabling simultaneous motion across a surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional multi-axis robots are used to achieve dexterity and precision, then automation capability and accuracy are improved, but device size and complexity increase significantly
Solution Approach 1:
The robot system is divided into modular components: a base unit, multiple leg assemblies with independent degrees of freedom, and a support platform. Each leg assembly functions as an independent module that can be controlled separately, reducing overall system complexity while maintaining multi-axis capability
Solution Approach 2:
The patent transitions from traditional Cartesian coordinate control to a leg-based mechanism that operates in multiple dimensions simultaneously. The legs provide movement in x, y, z directions plus rotational degrees of freedom (yaw, pitch), achieving 5-DOF capability through spatial configuration rather than sequential axis movement
2Productivity
If traditional multi-axis robots are used to achieve automation capability, then productivity and accuracy are improved, but physical space requirements increase
Solution Approach 1:
The leg assemblies are designed to fold and nest against each other when not in use, allowing the robot to occupy minimal space. The modular structure enables compact storage configuration where legs can be positioned close to the base, significantly reducing the physical footprint compared to extended traditional robot arms
3Measurement precision
If traditional multi-axis robots are used to achieve precision and dexterity, then automation performance is improved, but power consumption and system cost increase
Solution Approach 1:
The patent replaces traditional high-power hydraulic or electric actuation systems with electromagnetic coils for actuating the leg assemblies. This substitution reduces power consumption while maintaining precise control capability, as electromagnetic actuators can provide fine positional control with lower energy input compared to hydraulic systems
Data Source
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AI summary
A multi-axis robot device (10) for displacing an item comprises: a base (20) with a first foot (30) fixed thereto and a second foot (40) that is displaceable with respect to the base (20) in a first axial direction (A-A'). The first foot (30) is hingedly connected to the second foot (40) by at least one pair of linkages (50). The at least one pair of linkages (50) is attached to a support plate (60); and a coupling arm (70) connects the support plate (60) to a rotary connector (82) on a third foot (80). The third foot (80) is displaceable with respect to the base (20) in a second axial direction (B-B') which is perpendicular to the first axial direction (A-A'). A system has actuators which include a plurality of individually addressable electromagnetic coils (200) configurable, under control of a controller (700), as a planar motor to displace, locate and hold the multi-axis robot device (10) and then to use the addressable electromagnetic coils (200) to control the operation of the multi-axis robot device (10).