Grinding Wheel Dressing Using Workpiece Feedback Data
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Solution Overview
Problem
The repeated use of grinding wheels in manufacturing leads to wear and deformation, causing inefficiencies in producing workpieces with desired profile dimensions, especially when multiple grinding stations are involved, as each station can wear and deform differently, resulting in costly trial-and-error dressing processes.
Innovation Solution
A system and method for automated dressing of grinding wheels using feedback from a workpiece measurement system, where electronic measurement data from multiple workpieces is used to calculate offset data for each grinding station, allowing the dressing apparatus to custom-shape each station based on its specific wear and deformation, ensuring accurate reproduction of desired profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If trial-and-error grinding runs are made to iteratively refine the dressing algorithm, then the grinding wheel eventually produces workpieces with desired profile dimensions, but the process is time consuming and results in costly manufacturing inefficiencies
Solution Approach 1:
The system measures actual workpiece dimensions and feeds this information back to automatically adjust the dressing algorithm, eliminating the need for manual trial-and-error iterations. The feedback loop enables the system to self-correct and achieve precise profile dimensions directly.
Solution Approach 2:
The grinding system performs self-adjustment by automatically modifying the dressing algorithm based on measured workpiece dimensions. This self-service capability eliminates the need for external manual intervention and iterative refinement processes.
2Productivity
If a grinding wheel has multiple grinding stations used to simultaneously grind multiple workpieces, then productivity increases, but each grinding station wears and deforms differently due to different structural stresses, compounding manufacturing inefficiencies
Solution Approach 1:
The system divides the multi-station grinding wheel into individual segments, each with its own measurement and adjustment capabilities. This segmentation allows each grinding station to be independently dressed based on its specific wear characteristics, maintaining precision across all stations simultaneously.
Solution Approach 2:
The dressing algorithm applies location-specific adjustments to each grinding station based on its measured performance and wear pattern. This local quality approach ensures that each station receives customized dressing parameters tailored to its specific conditions, maintaining consistency across all stations.
3Ease of manufacture
If conventional CNC dressing machines shape the grinding wheel according to an initial computerized dressing algorithm, then the grinding wheel acquires a theoretical profile or shape, but this theoretical profile does not necessarily produce workpieces with desired profile dimensions
Solution Approach 1:
The system replaces theoretical dressing algorithms with feedback-driven adjustment. Actual workpiece measurements feed back to modify the dressing parameters, ensuring that the grinding wheel profile is optimized for producing workpieces with desired dimensions rather than relying on theoretical calculations.
Solution Approach 2:
The system dynamically changes dressing parameters based on measured workpiece dimensions. Instead of using fixed theoretical parameters, the system adjusts dressing parameters in real-time to optimize the grinding wheel profile for actual production requirements.
Data Source
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AI summary
A method and a system are provided for automatically dressing a grinding wheel used to grind workpieces. A workpiece is scanned to determine dimensions of the workpiece. A computer-readable dimensions datafile is generated containing the dimensions of the workpiece. A processor electronically compares the dimensions of the workpiece with reference or desired dimensions to obtain comparison results, and generates a computer-readable comparison datafile containing the comparison results. The processor transmits the comparison datafile containing the comparison results to a CNC controller, which utilizes the comparison results to control a shaping tool used to shape or dress the grinding wheel so that the grinding wheel produces workpieces having the reference or desired dimensions.