Processing Head Spacing Control for Workpiece Topography
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Solution Overview
Problem
Current processing devices face challenges in maintaining the smallest possible operating spacing between the processing head and workpiece, leading to potential collisions and inefficient use of process fluids due to surface undulation and high-speed movement, which can result in process interruptions and damage.
Innovation Solution
A method and device that detect the workpiece's surface topography using sensors, allowing for dynamic adjustment of the processing head's operating spacing to minimize collisions and optimize fluid consumption, by determining the actual position lag (trailing spacing) and adjusting movement parameters based on surface data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the processing head is moved at high speed over the workpiece, then productivity is improved, but the trailing spacing increases causing collisions and process interruptions
Solution Approach 1:
The system performs preliminary detection of the workpiece surface topography using a sensor before processing begins. This advance knowledge allows the control system to pre-calculate the minimum desired operating spacing and plan the processing path to avoid collisions, enabling high-speed processing without sacrificing reliability.
Solution Approach 2:
The system continuously monitors the actual position of the processing head and compares it with the desired position to determine trailing spacing. This feedback loop allows real-time adjustment of processing parameters and speed to maintain safe operating spacing while maximizing productivity.
2Loss of substance
If the operating spacing is reduced to minimize process fluid consumption, then loss of substance is improved, but the risk of collision increases due to surface undulation
Solution Approach 1:
The system detects the workpiece surface topography in advance using a sensor, allowing the control system to pre-determine the minimum desired operating spacing specific to each workpiece geometry. This enables operation at the smallest safe spacing, minimizing process fluid consumption without risking collision.
Solution Approach 2:
The system dynamically adjusts the operating spacing parameter based on the detected surface topography and trailing spacing measurements. By continuously optimizing this parameter, the system achieves minimal process fluid consumption while maintaining collision-free operation.
3Manufacturing precision
If the processing head is positioned close to the workpiece for optimal processing, then manufacturing precision is improved, but any deviation due to trailing spacing causes collisions
Solution Approach 1:
The system continuously measures the trailing spacing by comparing actual and desired processing head positions. This feedback enables real-time compensation for position deviations, allowing the system to maintain optimal close spacing for precision processing while preventing collisions through active control.
Solution Approach 2:
The system dynamically adjusts the operating spacing based on real-time measurements of trailing spacing and surface topography. This dynamic adaptation allows the processing head to maintain optimal distance for precision work while automatically compensating for speed-dependent position deviations.
Data Source
AI summary
A method for processing a workpiece with a processing device which has a processing head which can be moved at a defined speed and distance from a surface of the workpiece, the method comprising at least partially detecting a surface topography of the workpiece to be processed, determining a minimum desired operating distance of the processing head from the workpiece with reference to the detected surface topography of the workpiece and a trailing spacing of the processing head associated with the defined speed, and processing the workpiece with the processing head at the established minimum desired operating distance of the processing head from the workpiece.