Dual-Arm Robot Positioning for Production Systems
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Solution Overview
Problem
Conventional production systems using two horizontal multi-joint robots face inefficiencies in workpiece transportation and assembly due to limited arm configurations and inaccurate positioning, leading to increased operational time and reduced precision.
Innovation Solution
A production system incorporating a dual-arm robot and a second robot, where the dual-arm robot is positioned at the transportation access of a workpiece stocker, utilizing a combination of turnable torso sections, swingable and twisting arm mechanisms, and contact sensors to accurately pick up, transport, and place workpieces, while the second robot assembles components, optimizing the working area and reducing space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two horizontal multi-joint robots are used for workpiece transportation and assembly, then the system can perform basic robotic operations, but the positioning accuracy is insufficient and operational time increases
Solution Approach 1:
The system divides the robotic function into two specialized units: a dual-arm robot for high-precision positioning and transportation, and a second robot for assembly operations. This segmentation allows each robot to be optimized for its specific function, improving overall positioning accuracy and reducing operational time compared to using two general-purpose horizontal multi-joint robots.
Solution Approach 2:
The dual-arm robot configuration enables three-dimensional workpiece handling with superior positioning capability compared to conventional horizontal multi-joint robots. The vertical arrangement of arms and the ability to operate in multiple spatial dimensions allows for more precise and faster workpiece transportation and assembly operations.
2Productivity
If conventional horizontal multi-joint robots are used, then the system structure is relatively simple, but the workpiece transportation and assembly efficiency are reduced
Solution Approach 1:
The system merges the transportation function into the dual-arm robot's primary operation, eliminating the need for separate transportation mechanisms. The dual-arm robot simultaneously performs workpiece pickup, transportation, and positioning, while the second robot handles assembly, creating an integrated high-efficiency system that outweighs the increased structural complexity.
Solution Approach 2:
The system employs dynamic coordination between the dual-arm robot and the second robot, where the dual-arm robot's arms can independently and simultaneously perform different operations. This dynamic operation mode allows for optimized workflow and improved assembly efficiency despite the more complex robot configuration.
3Manufacturing precision
If the dual-arm robot is positioned at the transportation access portion of the workpiece stocker, then workpiece transportation precision is improved, but the space arrangement becomes more constrained
Solution Approach 1:
The system transitions from horizontal space utilization to vertical space utilization by positioning the dual-arm robot at the transportation access portion of the workpiece stocker. This vertical arrangement allows for precise workpiece placement while maintaining compact footprint, effectively resolving the conflict between precision and space requirements.
Solution Approach 2:
The second robot is positioned to face the forward portion of the dual-arm robot's torso, creating a nested or overlapping workspace arrangement. This nesting allows both robots to operate in close proximity without interfering with each other, maximizing space utilization while maintaining high placement precision.
Data Source
AI summary
A production system includes a workpiece stocker, a dual-arm robot, and a second robot. A workpiece is to be placed on the workpiece. The dual-arm robot is arranged at a transportation access portion of the workpiece stocker. The second robot is arranged to face a forward portion of a torso of the dual-arm robot.