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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"tool paths"”.
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Reducing Curvature in Complex Tool Paths by Deviating from CAM-Produced Tool Paths Within a Tolerance Band
… algorithm to decrease high-curvature sections in tool paths for complex parts to achieve shorter machining times resulting in higher production rates. In the research sample cases, the algorithm decreased machining times by 1% to 9% for design-induced sections of high curvature and by 16% to 75% …
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Time-optimal CNC tool paths : a mathematical model of machining
… a surface to obtain skeletal information on the toolpaths. This framework is more amenable to the techniques of continuum mechanics and differential geometry rather than to path generation and conventional CAD/CAM (Computer Aided Design and Manufacturing) theory. After the formulation, this …
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Automatic tool path generation for multi-axis machining
… in terms of machining features, we generate tool paths directly by analyzing the accessibility of the surface of the part. This eliminates the problem of feature extraction. We envision this as the core strategy of a new direct and seamless CAD/ CAM system. We perform the accessibility …
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Automatic 5-axis NC toolpath generation
Despite over a decade of research, automatic toolpath generation has remained an elusive goal for 5-axis NC machining. This thesis describes the theoretical and practical issues associated with generating collision free five-axis roughing and finishing toolpaths automatically from the CAD model of …
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Global Finish Curvature Matched Machining
… researchers have produced various methods in tool path generation for SSM. Five-axis curvature matched machining (CM2) is the most efficient. With the widespread use of 5-axis mill in industries, CM2 is a better solution for improving the machining efficiency for product concept models. CM2 …
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Application of traveling salesman problem in generating a collision-free tool path in drilling
In machining, the tool path is generated according to the workpiece geometry and arrangement of holes. Majority of Computer Aided Manufacturing (CAM) software offer a set of predefined strategies to choose from. These tool paths are mostly far from being the optimum path, specifically for complex …
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The mechanics of incremental sheet forming
… and sandwich panels. A new system for measuring tool forces in ISF is commissioned. The system uses six loadcells to measure reaction forces on the workpiece frame. Each force signal has an uncertainty of ±15 N. This is likely to be small in comparison to tool forces measured in ISF. The …
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Virtual five-axis flank milling of jet engine impellers
… of optimizing feed rates for impeller machining tool paths and a new five-axis chatter stability algorithm. A semi-discrete, solid-modeling-based method of obtaining cutter-workpiece engagement (CWE) maps for five-axis flank milling with tapered ball-end mills is developed. It is compared against …
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Automated Process Planning for Five-Axis Point Milling of Sculptured Surfaces
… possible. Secondly, a novel method for tool-path length estimation for a given cutter and an accessible machining area is proposed to improve an existing multi-cutter selection algorithm. It makes use of neural network (NN) and is shown to be able to achieve more accurate estimation …
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Improvement of position and orientation tracking accuracy by fusing HTC Vive trackers and Inertia Measurement Units
… accuracy of the proposed system. Multiple tool paths having a variety of operating conditions, such as different linear accelerations and angular velocities, have been used with various tracking spaces, and a different number of base stations and Vive trackers for testing. The HTC Vive …