Seven-Axis Painting Robot Layout for Compact Booth Access
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Solution Overview
Problem
Existing painting robots face challenges in efficiently accessing and maneuvering around complex workpiece shapes due to limitations in arm configuration and layout, leading to interference with hoses and cables, and require larger booth sizes for adequate operation.
Innovation Solution
A seven-axis robot configuration with specific arm offsets and a base design that includes a gap for passage of tubes and cables, allowing for compact booth design and improved accessibility, featuring a base with protruding portions for support and a diagonal tube arrangement to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the robot arm configuration uses traditional offsets, then the structure is simpler, but the accessibility to complex workpiece shapes is reduced and interference with hoses and cables increases
Solution Approach 1:
The patent applies parameter changes by optimizing the offset length between the first and second axes to be equal to or greater than one third of the offset length between the second and third axes. This specific parameter relationship enables the robot arm to access complex workpiece shapes effectively while maintaining a manageable structural configuration.
2Ease of operation
If the booth size is increased to accommodate robot operation, then the robot can operate more freely, but the space efficiency is reduced
Solution Approach 1:
The patent changes the geometric parameters of the robot arm configuration, specifically setting the offset length between the first and second axes to be equal to or greater than one third of the offset length between the second and third axes. This optimization allows the robot to operate freely within a more compact booth space, improving space efficiency while maintaining operational freedom.
3Adaptability or versatility
If the offset length between first and second axes is increased, then the accessibility is improved, but the arm configuration becomes more complex
Solution Approach 1:
The patent establishes a specific parameter relationship where the offset length between the first and second axes is equal to or greater than one third of the offset length between the second and third axes. This controlled parameter change improves workpiece accessibility while preventing excessive complexity in the arm configuration.
Data Source
AI summary
A robot includes a mount fixed to an installation surface, a base connected to the mount to be rotatable about a first axis, a first arm connected to the base to be rotatable about a second axis perpendicular to the first axis, and a second arm connected to the first arm to be rotatable about a third axis parallel to the second axis. An offset length in a direction perpendicular to the first axis between the first axis and the second axis is equal to or greater than one third of an offset length between the second axis and the third axis.