Robot Button Inspection With Position-Force Synchronization
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Solution Overview
Problem
Existing inspection systems for operation components, such as buttons on electronic devices, face challenges in accurately determining quality due to deviations between load changes and operation amount changes, leading to inaccurate correspondence and quality assessment.
Innovation Solution
A robot system that includes a force detection portion and a display control portion to accurately correlate specific position information and force information, resolving temporal reception deviations and displaying allowable ranges for precise quality determination of operation components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the robot operates at high speed for inspection, then productivity is improved, but measurement precision deteriorates due to temporal reception deviation between position information and force information
Solution Approach 1:
The system performs preliminary actions by storing position information and force information separately with timestamp markers before processing, allowing synchronization to be prepared in advance. This enables accurate correspondence even during high-speed operation by pre-organizing the data structure for subsequent alignment.
Solution Approach 2:
The display control portion provides visual feedback by displaying both the first detection result (position-force correspondence) and second detection result (position-electric signal correspondence) simultaneously. This feedback mechanism allows operators to verify the accuracy of correspondence relationships and understand the temporal alignment status.
2Productivity
If the robot operates at high speed, then productivity is improved, but manufacturing precision deteriorates due to overshoot of operation amount
Solution Approach 1:
The robot is configured to perform preliminary positioning and force application before actual button inspection. The force detection portion measures force information in advance during the approach phase, allowing the system to predict and prevent overshoot before it occurs during the inspection operation.
Solution Approach 2:
The system provides real-time feedback by displaying the relationship between operation amount and force information, allowing operators to monitor and adjust the inspection process. This feedback loop enables correction of potential overshoot conditions while maintaining high-speed operation capabilities.
3Measurement precision
If force detection portion is reset frequently to minimize drift influence, then measurement precision is improved, but productivity deteriorates due to inspection time loss
Solution Approach 1:
The system performs preliminary continuous inspection of multiple buttons before resetting the force detection portion. This preliminary action allows accumulation of inspection data across multiple components, minimizing the frequency of resets and maintaining higher productivity while still managing drift through periodic resetting after a sequence of inspections.
Data Source
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AI summary
A control device includes: a display control portion that displays a first detection result in which specific position information indicating a specific position of the robot and force information output from a force detection portion provided in the robot correspond to each other on a display portion, in a case where robot inspects an operation component that outputs an electric signal corresponding to an operation.