Robot-Guided Tool Path Correction for Local Component Deformation
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Solution Overview
Problem
Existing methods for processing components with robot-guided tools often fail to accurately adapt to local deformations and variations in components, leading to inefficiencies in machining paths.
Innovation Solution
A method that specifies target positions for a machining path, selects points for correction, determines actual positions using sensors, and traverses the path based on these actual positions, allowing for individual correction and adaptation to component-specific deformations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a uniform offset is applied to all target positions based on a single reference measurement, then the correction process is simple and fast, but local deformations and variations in different parts of the component cannot be accurately compensated
Solution Approach 1:
The machining path is divided into multiple discrete target positions that are independently measured and corrected. Instead of applying a single uniform offset to the entire path, the method measures and corrects each target position individually based on its actual location on the component, allowing local deformations to be compensated without requiring a complex overall transformation system.
Solution Approach 2:
Each target position on the machining path is treated with local quality correction - the actual position is determined individually for each point through measurement, and corrections are applied specifically to those points that deviate from their target positions. This allows different parts of the component to be corrected according to their specific local deformations rather than applying a generalized correction.
2Manufacturing precision
If all target positions are corrected individually based on separate measurements, then local deformations are accurately compensated, but the measuring effort and processing time increase significantly
Solution Approach 1:
The method applies partial correction by selecting and correcting only those target positions that require adjustment based on actual measurements, rather than uniformly correcting all positions. The control system determines which points need correction and applies corrections selectively, reducing unnecessary measurement and processing time while still achieving accurate local deformation compensation where needed.
Solution Approach 2:
The system employs feedback by measuring the actual positions of target points on the component and using this information to dynamically adjust the machining path. The control system receives measurement data about actual positions, compares them with target positions, and automatically generates corrections based on the detected deviations, creating a closed-loop system that adapts to actual component variations.
3Manufacturing precision
If the machining path is adapted to each specific component geometry, then processing accuracy is improved, but the flexibility and reusability of the machining program decreases
Solution Approach 1:
The machining program maintains its general structure and parameters for reusability, but dynamically adjusts specific position parameters based on actual component measurements. The target positions and tool paths are defined as adjustable parameters that can be modified by the control system based on measured actual positions, allowing the same program to be applied to multiple components while adapting to each component's specific geometry through parameter modification rather than program redesign.
Data Source
Figure 1~3
AI summary
Disclosed is a method for correcting the processing path of a robot-guided tool for processing at least one component (1), wherein: a target position for a plurality of points (xs,1 - xs,8) of a target machining path is specified (S10); from said points, points (xs,1, xs,3, xs,5, xs,7) to be corrected are selected (S20); the actual position for the selected points (x1, x3, x5, x7) to be corrected is measured or detected on at least one component (1) to be processed (S30); and wherein the processing path corresponding to the measured or detected actual position of the points (xs,1, xs,3, xs,5, xs,7) of the component (1) to be processed is correspondingly corrected (S50). The method is suitable, for example, for welding a component (1) into a borehole by means of a laser beam (L), wherein the processing path of the laser beam (L) is corrected in such a way so as to correspond to the contour of the component (1).