5-Axis Machining Control for Inoperable Orientation Correction
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Solution Overview
Problem
Conventional 5-axis processing machines face instability in control due to errors in the rotation axes, leading to an inability to realize all postures as intended, resulting in errors in the control unit and inaccurate calculations.
Innovation Solution
A 5-axis processing machine with a control unit comprising a calculation unit, determination unit, and correction unit that measures and corrects the orientation of the workpiece relative to the tool, ensuring it does not fall within an inoperable range by adjusting the rotation axes based on NC data, thereby stabilizing the control process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If rotation axes are used for 5-axis processing, then processing versatility is improved, but control stability deteriorates due to axis errors and inoperable ranges
Solution Approach 1:
The control unit performs preliminary detection of the workpiece orientation relative to the tool before processing begins. By calculating the orientation angle and determining whether it falls within an inoperable range in advance, the system can proactively adjust parameters or issue warnings, preventing control instability from occurring during actual processing operations.
Solution Approach 2:
The control unit continuously monitors the actual orientation of the workpiece relative to the tool during processing and compares it against the inoperable range parameters. This feedback mechanism allows the system to detect potential instability conditions and automatically adjust control parameters or alert operators, thereby maintaining control stability while preserving processing versatility.
2Productivity
If NC data is used for automated processing, then productivity is improved, but measurement precision deteriorates due to inability to detect actual orientation
Solution Approach 1:
Before automated processing begins, the control unit calculates the expected workpiece orientation based on NC data and compares it against the inoperable range defined by actual rotation axis measurements. This preliminary check ensures that even though automated processing is used, the system maintains awareness of actual orientation conditions and can prevent operations that would result in inaccurate measurements or control errors.
Solution Approach 2:
The control unit acts as an intermediary between the NC data processing system and the actual processing execution. It receives NC data, calculates expected orientations, compares them against measured actual orientations and inoperable ranges, and then determines whether to proceed with automated processing or issue warnings. This intermediary function bridges the gap between automated productivity and measurement precision by ensuring that automation operates within known accurate parameters.
Data Source
AI summary
A 5-axis processing machine includes a mounting table on which a tool and a work piece are placed; and a control unit including a calculation unit, a determination unit, and a correction unit; wherein the mounting table is moved relatively by three linear axes and two rotation axes based on NC data, the two rotation axes include a first axis and a second axis, the calculation unit calculates an orientation of the work piece with respect to the tool at a time of processing from NC data and a directions of rotation centers of an actual first axis and an actual second axis, the determination unit determines whether or not the calculated orientation of the work piece is included in an inoperable range, the inoperable range being the inoperable angle range, and the correction unit corrects the orientation of the work piece with respect to the tool.