Cooperative Robot Fastening With Fixed Vision and Jig Alignment
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Solution Overview
Problem
Existing robot-based assembly systems for product parts suffer from delayed work times due to camera usage for precise control, limited driving range, and increased load from camera weight, which affects efficiency and cost.
Innovation Solution
A cooperative robot system comprising a loading robot, fastening robot, and control device, utilizing a jig with proximity sensors and position-based control to align and fasten module parts without relying on cameras for precise positioning, and a parts supply robot to load parts onto the jig.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If cameras are mounted on each robot for precise vision control, then positioning precision is improved, but work time is delayed and robot load is increased
Solution Approach 1:
The patent removes cameras from the robots entirely, extracting the vision function from the mobile robots. Instead, a fixed camera system is used to capture images of the work area, and these images are processed by a control device to determine robot positions and guide operations, thereby eliminating the time loss and load issues associated with mobile cameras while maintaining positioning precision.
Solution Approach 2:
The patent introduces a fixed camera system and image processing system as intermediaries between the robots and the work area. The fixed cameras capture images, the control device processes these images to determine positions, and then guides the robots based on this information, eliminating the need for robots to carry their own cameras and thus reducing work time and robot load.
2Measurement precision
If cameras are mounted on each robot for precise vision control, then positioning precision is improved, but robot load is increased
Solution Approach 1:
The patent removes cameras from the robots entirely, extracting the vision function from the mobile robots. Instead, a fixed camera system is used to capture images of the work area, and these images are processed by a control device to determine robot positions and guide operations, thereby eliminating the load issues associated with mobile cameras while maintaining positioning precision.
3Measurement precision
If cameras are mounted on each robot for precise vision control, then positioning precision is improved, but driving range is limited
Solution Approach 1:
The patent removes cameras from the robots entirely, extracting the vision function from the mobile robots. Instead, a fixed camera system is used to capture images of the work area, and these images are processed by a control device to determine robot positions and guide operations, thereby eliminating the driving range limitations associated with mobile cameras while maintaining positioning precision.
Solution Approach 2:
The patent shifts the vision function from the mobile dimension (robots moving around) to a fixed dimension (stationary cameras overlooking the work area). This dimensional change allows the cameras to have a broader, fixed field of view that is not constrained by robot movement ranges, thereby extending the effective monitoring and positioning coverage area.
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 system reduces work time, extends the driving range of robots, and lowers production costs by minimizing camera usage and load, enhancing operational efficiency.
Implementation Method 1
The jig may include a proximity sensor configured to detect whether the module part is loaded on the jg.
Data Source
AI summary
A parts fastening system using a cooperative robot that fastens a module part to a fastening target includes: a jig to load the module part at a predetermined position; a loading robot to grip the module part loaded on the jig, and to move and align the module part to a fastening area in which the module part is fastened to the fastening target; a fastening robot including a first camera, the fastening robot to fasten the module part to the fastening target; and a control device to control movements of the loading robot and the fastening robot.