Robot Path Correction for Workpiece Position Changes
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Solution Overview
Problem
Industrial robots face challenges in efficiently correcting their operations when workpiece positions change, requiring extensive expertise and time for re-teaching, which degrades accuracy and efficiency.
Innovation Solution
A robot system with a memory for automatic operation information, an operation controlling module that selects between automatic and correctable automatic modes, and a manipulator for generating corrective manipulation information, allowing real-time correction of robot operations by changing positional coordinates while retaining some original operation elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If teaching is performed again to change the teaching information used for automatic operation of the robot, then the robot operation can be corrected to adapt to position changes, but the time and effort required increases significantly
Solution Approach 1:
The patent segments the operation information into multiple positions (first position, second position, third position) along the operation path. By allowing independent correction of each position's coordinates, the system enables partial updates rather than complete re-teaching, significantly reducing the time and effort required while maintaining adaptability to position changes.
Solution Approach 2:
The patent performs preliminary correction of position coordinates based on detected position changes before executing the corrected operation. The system automatically calculates corrected coordinates for the second position based on the detected change from the first position, preparing the corrected operation information in advance without requiring time-consuming re-teaching.
2Manufacturing precision
If complete re-teaching is performed to correct robot operation, then accuracy can be maintained, but the complexity and burden on the teaching person increases
Solution Approach 1:
The patent applies partial action by correcting only the necessary position coordinates (specifically the second position) rather than performing complete re-teaching of all operation parameters. This partial correction maintains work accuracy while significantly reducing the complexity and burden on the teaching person.
Solution Approach 2:
The system detects position changes by comparing the actual position with the taught position and uses this feedback to automatically calculate corrected coordinates. This feedback mechanism enables accurate correction without requiring expert intervention, reducing both complexity and burden on the teaching person.
3Productivity
If the robot operation is corrected in real-time based on position changes, then efficiency is maintained, but the system complexity increases
Solution Approach 1:
The system performs self-service by automatically detecting position changes and calculating corrected coordinates without requiring external intervention. The robot system corrects its own operation information based on detected position deviations, maintaining operational efficiency while avoiding the complexity of additional correction systems.
Solution Approach 2:
The patent replaces complex mechanical re-teaching processes with computational methods. Instead of manual re-teaching, the system uses coordinate calculations and information processing to automatically generate corrected operation data, maintaining efficiency while reducing system complexity through software-based solutions.
Data Source
AI summary
A robot system includes a robot body, a memory, an operation controlling module and a manipulator. When the robot body is located at a first position, the operation controlling module stops the robot body and receives a selecting manipulation of operation mode from the manipulator. When a correctable automatic mode is selected at the first position, the operation controlling module makes positional coordinates of a second position provided downstream of the first position in a moving direction, changeable from the second position in automatic operation information. When the positional coordinates of the second position are changed, the operation controlling module corrects the automatic operation information so that the robot body reaches the changed second position while retaining some of elements of the automatic operation information in the correctable automatic mode.