Thermal Processing Distance Calibration for Consistent Tool Positioning
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Solution Overview
Problem
Current thermal processing methods for workpieces require time-consuming and labor-intensive manual calibration of distance control, leading to high setup costs and downtimes, especially when processing large or complex materials.
Innovation Solution
A fully automated method using CNC control for initial value determination and distance calibration, which allows for precise positioning and amplification of distance sensor signals to maintain consistent working distances, reducing manual intervention and optimizing processing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual calibration of distance control is performed, then positioning precision is improved, but setup time and labor costs increase
Solution Approach 1:
The system performs automatic self-calibration using the distance sensor and CNC control unit. The calibration process is executed automatically without manual intervention, where the system itself determines the reference position and stores calibration data in memory, eliminating the need for operator involvement while maintaining precision
Solution Approach 2:
The manual mechanical calibration process is replaced by an automated electronic system combining distance sensor, CNC control unit, and memory device. The electronic automated calibration substitutes the manual mechanical adjustment method, achieving both time efficiency and precision
2Measurement precision
If manual calibration of distance control is performed, then positioning precision is improved, but labor costs increase
Solution Approach 1:
The calibration system operates autonomously without requiring skilled operators. The CNC control unit automatically executes calibration routines, the distance sensor measures positions, and the system stores reference data, making the process simple and eliminating complex manual procedures
Solution Approach 2:
The complex manual calibration procedure is replaced by an automated electronic system that simplifies the manufacturing setup. The electronic automation eliminates the need for skilled manual intervention and complex mechanical adjustment procedures
3Manufacturing precision
If working distance is precisely maintained, then machining quality is improved, but processing flexibility decreases
Solution Approach 1:
The system dynamically adjusts the machining tool's position in real-time based on workpiece surface variations. The distance control system continuously monitors and maintains the optimized working distance automatically, allowing the system to adapt to different workpiece geometries while preserving machining quality
Solution Approach 2:
The system automatically adjusts positioning parameters based on distance sensor feedback. By dynamically changing the Z-position parameter to maintain constant working distance, the system adapts to varying workpiece surfaces without compromising machining quality or flexibility
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
This approach simplifies and accelerates the thermal processing of workpieces, ensuring high-quality results while minimizing downtime and costs, particularly beneficial for large or repeatedly processed materials.
Implementation Method 1
a distance sensor that can be moved with the machining tool
Data Source
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AI summary
Known methods for the thermal processing of a workpiece use a thermal processing machine that has a processing tool movable relative to the workpiece by means of a CNC control and a distance control, and a distance sensor that can be moved along with it. To provide a method that enables thermal processing of the workpiece with the highest possible and most consistent quality, while still being simple, fast, and cost-effective, the invention proposes that the following process steps be carried out fully automatically: (a) Setting up the processing machine by establishing contact between the processing tool and the workpiece and detecting the spatial position of a workpiece surface, positioning the processing tool at a predetermined first and second distance to the workpiece surface, and detecting the corresponding signal values of the distance sensor as the first and second measured values.as well as calibrating the distance control, comprising determining a height derivative of the distance sensor signal and a gain factor for the distance sensor signal, taking into account the first measured value, the second measured value, the first distance, and the second distance; (b) positioning the machining tool at a predetermined working distance to the workpiece surface, taking into account the gain factor; and (c) thermal machining of the workpiece.