Robot Speed Synchronization for Moving Workpiece Accuracy
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Solution Overview
Problem
Conventional robot systems face challenges in maintaining high operation accuracy and efficiency when working on moving workpieces, as they require synchronization of conveyance and working speeds, which is difficult to achieve with existing technologies.
Innovation Solution
A robot system that includes a conveyor, a robot, a speed calculation circuit, and a robot control circuit, where the speed calculation circuit calculates the conveyance speed of the workpiece and the robot control circuit adjusts the working speed of the robot accordingly, allowing the robot to perform operations on the workpiece while it is being conveyed, thereby minimizing downtime and ensuring accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the robot works on a moving workpiece without speed synchronization, then productivity increases by eliminating downtime, but operation accuracy deteriorates due to speed mismatch between robot and conveyor
Solution Approach 1:
The robot control circuit receives actual conveyance speed information from the conveyor control circuit and uses this feedback to dynamically adjust the robot's working speed. This closed-loop speed synchronization ensures the robot maintains accurate positioning relative to the moving workpiece while eliminating idle waiting time, thereby resolving the contradiction between productivity and precision.
Solution Approach 2:
The system transitions from static speed control to dynamic speed adjustment by continuously adapting the robot's working speed to match the actual conveyance speed. This dynamic synchronization allows the robot to efficiently follow the workpiece at variable speeds while maintaining operational accuracy, addressing both productivity and precision requirements.
2Manufacturing precision
If the robot waits for the workpiece to be positioned before working, then operation accuracy is maintained, but productivity decreases due to idle time
Solution Approach 1:
The robot continuously performs useful work by operating on the workpiece during its entire conveyance through the working area, eliminating idle waiting time. The speed synchronization mechanism ensures this continuous operation maintains positioning accuracy, thereby achieving both high productivity and precision without compromising either.
Solution Approach 2:
The real-time speed information feedback from the conveyor control circuit enables the robot to continuously adjust its working speed to match the conveyance speed, allowing uninterrupted operation while maintaining accurate positioning relative to the moving workpiece.
3Adaptability or versatility
If the conveyance speed varies, then flexibility in production is improved, but synchronization between robot and conveyor becomes difficult to maintain
Solution Approach 1:
The conveyor control circuit provides real-time actual conveyance speed information to the robot control circuit, creating a feedback loop that automatically compensates for speed variations. This enables the system to adapt to different conveyance speeds while maintaining reliable synchronization between the robot and conveyor, resolving the contradiction between flexibility and stability.
Solution Approach 2:
The robot's working speed parameter is dynamically changed to match the actual conveyance speed, allowing the system to adapt to various production requirements and speed variations while maintaining synchronization reliability through continuous parameter adjustment.
Data Source
AI summary
A robot system includes a conveyor, a robot, a speed calculation circuit, and a robot control circuit. The conveyor is configured to convey a workpiece at a conveyance speed. The robot is configured to work on the workpiece while the workpiece is conveyed by the conveyor. The speed calculation circuit is configured to calculate the conveyance speed. The robot control circuit is configured to control a working speed of the robot according to the conveyance speed calculated by the speed calculation circuit.