Dual-Scraper Robot Rotation for Faster Recess Scraping
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Solution Overview
Problem
Existing scraping processes are inefficient in forming multiple recesses on a workpiece surface, leading to a prolonged cycle time and reduced productivity.
Innovation Solution
A robot system with a pair of scrapers that rotate between two orientations to alternately form recesses, allowing for consecutive and efficient formation of multiple recesses by switching scrapers during the scraping process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single scraper is used to form recesses sequentially, then the device complexity is low, but the productivity is reduced due to prolonged cycle time
Solution Approach 1:
The single scraper is segmented into two separate scrapers (first scraper and second scraper) that can operate alternately. Each scraper is positioned on opposite sides of the workpiece, allowing simultaneous preparation of two different positions while one scraper is forming a recess and the other is moving to the next position, thereby halving the cycle time without significantly increasing overall system complexity
Solution Approach 2:
While one scraper is engaged in forming a recess at the current position, the other scraper simultaneously moves to the next position in advance. This preliminary positioning action eliminates idle time between recess formations, as the standby scraper is already prepared to immediately take over when the active scraper completes its cycle
Solution Approach 3:
The two scrapers operate in a periodic alternating manner, with each scraper performing scraping operations at different positions in sequence. This periodic switching between two scrapers creates a continuous production rhythm where one scraper is always active while the other is repositioning, maintaining constant productivity without interruption
2Productivity
If multiple scrapers are used to form recesses simultaneously, then the productivity increases, but the device complexity increases
Solution Approach 1:
The scraper system is segmented into two independent scraping units mounted on opposite sides of the workpiece. Each unit comprises its own scraper blade and positioning mechanism, allowing them to operate independently and alternately, achieving the productivity benefits of multiple scrapers while keeping each individual unit relatively simple
Solution Approach 2:
Instead of having multiple scrapers compete for the same working position, the system inverts the approach by positioning scrapers on opposite sides of the workpiece and having them work on opposite faces or opposite sides of the same face. This spatial inversion eliminates the need for complex switching mechanisms while still achieving continuous production through alternating operations
Data Source
AI summary
A robot includes a base part; a pair of scrapers provided to the base part so as to face each other, the pair of scrapers each having a proximal end connected to the base part and a distal end for cutting a surface, and the pair of scrapers extending so as to approach or recede from each other progressively from the proximal end toward the distal end; and a movement mechanism unit for rotating the base part between a first orientation in which one of the pair of scrapers is closer to a workpiece than the other scraper, and a second orientation in which the other scraper is closer to the workpiece than the one scraper.