Robot Scraper Force Modulation for Precision Surface Recesses
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Solution Overview
Problem
The existing manual scraping processes for forming unevenness on workpiece surfaces are labor-intensive and time-consuming, requiring repeated strong force applications and expert intervention to achieve the desired recess with valleys and crest portions aligned in one direction.
Innovation Solution
A robot system equipped with a scraper and a control device that moves the scraper along the surface while varying the pressing force, repeatedly increasing and decreasing the depth of scraping to form recesses with aligned valleys and crest portions, mimicking the quality achieved by human experts but with automated precision and speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual scraping process is used by expert, then high quality recess formation is achieved, but labor intensity and time consumption increase
Solution Approach 1:
The patent uses a robot to copy and reproduce the manual scraping motion and force application patterns of an expert operator. The control device replicates the complex, varying pressing forces and scraping depths that an expert would manually apply, thereby achieving the same high-quality recess formation with automated precision and reduced cycle time.
Solution Approach 2:
The patent replaces the manual mechanical operation of expert scraping with an automated robot system. The robot mechanically executes the scraping process with programmable motion control, substituting human physical operation with automated mechanical systems that can maintain consistent quality while reducing labor intensity and time consumption.
2Shape
If repeated strong force application is used to form recess, then desired unevenness pattern is achieved, but process complexity and operation difficulty increase
Solution Approach 1:
The patent employs dynamic force control where the robot systematically varies the pressing force and scraping depth in a controlled manner. Instead of requiring complex manual judgment to apply repeated strong forces, the control device programmatically adjusts these parameters to create the desired unevenness pattern, simplifying the operation while achieving the same shape quality.
Solution Approach 2:
The patent implements periodic variation in scraping depth and pressing force to create the aligned valleys and crest portions. By systematically applying force in periodic cycles during the scraping motion, the robot generates the desired unevenness pattern without requiring complex real-time manual intervention, thereby simplifying the operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The robot system significantly reduces cycle time and achieves high-quality recess formation with aligned valleys and crest portions, matching the quality of manual processes while automating the scraping process, thereby enhancing efficiency and reducing labor requirements.
Implementation Method 1
a robot system configured to perform a scraping process to scrape and flatten a surface of a workpiece
Data Source
AI summary
A robot system includes a robot configured to move a scraper configured to scrape the surface, and a control device configured to control the robot. The control device is configured to execute the scraping process by moving the scraper in a direction along the surface while pressing the scraper against the surface by the robot, and during the execution of the scraping process, repeatedly increase and decrease a depth of scraping the surface by controlling a position of the robot so as to repeatedly increase and decrease a pressing force by which the robot presses the scraper against the surface.