Machine Tool Batch Adaptation Using Reference Machining Signals
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Solution Overview
Problem
Current machine tools face challenges in reliably machining workpieces from different batches due to fluctuations in machinability, leading to potential errors and damage, as existing methods do not adequately account for batch-specific variations in material properties and processing conditions.
Innovation Solution
A method that uses internal detection devices in machine tools to record and analyze measurement signals during machining, comparing them to multidimensional reference functions from previous machining processes to adapt operation parameters and compensate for batch-specific differences, thereby ensuring reliable and efficient processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If machine tools use standard machining processes without batch-specific adaptation, then processing speed is maintained, but machining reliability deteriorates due to batch-specific material variations
Solution Approach 1:
The system performs preliminary characterization of material batches by recording measured variables during initial machining processes and storing them as reference functions. This preliminary action enables subsequent batches to be processed with pre-adapted parameters, ensuring reliability without sacrificing productivity during normal operation.
Solution Approach 2:
The system continuously monitors measured variables during machining and compares them against reference functions from previous batches. This feedback mechanism allows automatic adjustment of machining parameters to account for batch-specific variations, maintaining both reliability and productivity through real-time adaptation.
2Reliability
If machine tools implement batch-specific adaptation using internal detection devices, then machining reliability improves, but device complexity increases
Solution Approach 1:
The machine tool uses its own internal detection devices to record measured variables and automatically generates reference functions without requiring external sensors or manual intervention. This self-service approach improves reliability while avoiding the complexity of additional external measurement systems.
Solution Approach 2:
The system makes multi-use of existing internal detection devices by utilizing their measurement signals for both real-time control and batch characterization. This universal use of existing components achieves batch-specific adaptation without adding dedicated sensors or complex hardware.
3Manufacturing precision
If machine tools record and analyze measured variables for each batch, then manufacturing precision improves, but loss of time increases due to additional measurement and analysis steps
Solution Approach 1:
The system records measured variables and creates reference functions during initial machining operations of each batch, performing the characterization work in advance. This preliminary action ensures high manufacturing precision for subsequent parts while minimizing setup time, as the analysis is completed before mass production begins.
Solution Approach 2:
The system continuously records measured variables during normal machining operations rather than requiring separate measurement steps. This continuous recording approach enables batch characterization without interrupting the machining process, maintaining both precision and productivity by eliminating dedicated setup time for measurements.
Data Source
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AI summary
The invention relates to a method for operating a machine tool (12), having the steps: - during a machining process in which at least one first workpiece of a first batch is machined by means of the machine tool (12): detecting at least one measurement variable by means of a detection device (16) of the machine tool (12; step S1); - ascertaining at least one measurement value (32) which characterizes the machining process on the basis of the measurement variable detected during the machining process by means of an electronic computing device (12; step S2); and - comparing the ascertained measurement value with at least one reference function which is ascertained chronologically prior to the machining process using at least one reference machining process that is carried out chronologically prior to the machining process by means of the machine tool (10) and/or by means of another machine tool and which is stored in an electronic memory device (18) and characterizes the reference machining process carried out in order to machine at least one second workpiece of a second batch (step S3).