Mobile Robot Scheduling for Machine Tool Maintenance Tasks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current machine tool systems face inefficiencies due to the inability to predict maintenance needs, leading to increased operator intervention and reduced productivity, especially outside regular working hours, as maintenance tasks like tool replacement, lubricant replenishment, and chip removal are not automatable.
Innovation Solution
A machine tool system utilizing mobile robots that autonomously perform maintenance tasks based on work requests, with a control unit determining suitable start times for these robots to execute tasks such as tool changing, lubricant supply, and chip disposal, prioritizing workpiece conveyance over maintenance to ensure continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If maintenance work is performed by operators manually, then maintenance tasks can be completed, but productivity decreases and work cannot be performed outside operating hours
Solution Approach 1:
The system enables self-service automation where mobile robots autonomously perform maintenance tasks without human intervention. The scheduling system automatically generates work requests based on machine tool status, assigns tasks to available robots, and coordinates their movements, allowing the system to service itself during off-hours while maintaining high productivity during operation.
2Reliability
If maintenance work is performed early as preventative measure, then safety is ensured, but frequency of maintenance increases and waste becomes greater
Solution Approach 1:
The scheduling system continuously monitors machine tool status and maintenance history, using this feedback to dynamically adjust maintenance timing. Work requests are generated based on actual machine conditions and robot availability rather than fixed schedules, optimizing the balance between preventative maintenance needs and minimizing unnecessary maintenance frequency and waste.
3Adaptability or versatility
If multiple mobile robots are used for maintenance, then maintenance capability increases, but coordination complexity increases
Solution Approach 1:
The scheduling system serves multiple functions: it monitors machine tool status, generates maintenance work requests, determines robot availability, assigns tasks to appropriate robots, and coordinates their movements. This multi-functional approach consolidates what would otherwise require separate complex systems into a single integrated platform, managing robot coordination efficiently while enhancing overall maintenance capability.
Data Source
AI summary
This machine tool system uses a plurality of mobile robots to convey workpieces to a plurality of machine tools, the machine tool system being provided with: machine tool control unit that issues work requests to the machine tools; a mobile robot control unit that determines workable times for the mobile robots on the basis of the work requests; and a determining unit that compares the workable times which are for the mobile robots and respectively planned by the mobile robots, and causes the mobile robot with the fastest workable time to execute the requested work.