Parallel Tool Path Cutting with Integrated Burr Removal
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Solution Overview
Problem
Conventional machining methods using machine tools often produce burrs on corners of workpieces, which require manual removal, increasing operator workload and reducing productivity, and reducing cutting speed to minimize burr formation extends machining time.
Innovation Solution
A cutting method and tool path generation device that involves machining a workpiece using multiple parallel tool paths, with a cutting step followed by a removal step on the same tool path, where the tool moves in the same direction as the cutting step, and a higher relative speed is used in straight areas than in curved areas to effectively remove burrs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the relative speed of the tool with respect to the workpiece is decreased to reduce burr formation, then burr production is reduced, but the machining time is extended
Solution Approach 1:
The tool path is segmented into multiple parallel paths, with each path processed sequentially. After completing one tool path, the tool moves to the next parallel path. This segmentation allows burr removal to be integrated into each segment rather than requiring a separate pass, reducing total machining time while maintaining low cutting speeds for burr prevention
Solution Approach 2:
The tool path is designed to perform both cutting and burr removal in succession during the same pass. The burr removal action is performed preliminarily along the same tool path before moving to the next path, eliminating the need for separate burr removal operations and reducing overall machining time
2Object-generated harmful factors
If manual burr removal is performed by an operator, then burrs are removed from workpiece corners, but operator workload increases and productivity decreases
Solution Approach 1:
The machining system performs burr removal automatically through programmed tool movements along predefined paths. The tool itself serves to remove burrs that it created during cutting, eliminating the need for manual operator intervention and maintaining high productivity while effectively removing burrs from all corners
3Productivity
If multiple parallel tool paths are used to machine the workpiece, then machining coverage is improved, but burrs are produced on corners of the workpiece
Solution Approach 1:
The tool path is designed with different local qualities - the main cutting portion uses higher speed for efficiency, while the corner areas use lower speed and specific movement patterns to prevent burr formation. The tool path includes dedicated burr removal segments at corner locations within each parallel path, allowing selective application of different parameters to different areas
Data Source
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AI summary
A cutting method in which a workpiece (1) is cut on the basis of a plurality of tool paths (p1 to p9) parallel to one another into a shape having a corner (1c) that protrudes outward. A machining step for machining the workpiece (1) on the basis of one tool path and a moving step for moving to the starting point of the next machining step after the completion of the one machining step are repeated. In the machining step, a cutting step for cutting the workpiece (1) in the one tool path and a removing step for removing a burr (5) by moving a tool (41) relatively to the workpiece (1) in the same tool path as that of the cutting step in a region forming the corner (1c) are successively performed.