Titlebook: Machining Impossible Shapes; IFIP TC5 WG5.3 Inter Gustav J. Olling,Byoung K. Choi,Robert B. Jerard Book 1999 IFIP International Federation

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Experiences from a Quantum Leap Improvement in Turbine Manufacturingical results and experiences from the process to achieve these results are expressed. A number of improvement features regarding 5-axis machining of sculptured surfaces are discussed. Major findings are pointed out as the lack of suitable functions in the CAD/CAM system to cope with the challenges o

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A Generative Approach for Die Pattern Machiningtry trend is to build patterns by NC machining. Since the mating planes for assembly or die face of casting stock are to be machined later, pattern should have some stock allowance on those surfaces, which can be as large as 12 mm. That means pattern itself can have fairly large amount of machining

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Geometric Contributions to 3-Axis Milling of Sculptured Surfacesble to move along the surface such that its envelope during the motion is the given surface. This is a question involving the curvatures of . and Σ. Second, we want to avoid that while milling in one part of ., Σ intersects another, already finished, part of the surface. This is a problem which invo

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Efficiency of Multi-Axis , Machining of Sculptured Part Surfaceszed, requiring capital expenditures proportional to machining time per part. The paper describes a general approach for calculation of the productivity of multi-axis . machining of sculptured part surfaces. Equations are derived to estimate the productivity of rough and finish machining and to calcu

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Virtual CNC with Performance Error Modeling) than physical machining. The accuracy must meet shop floor usage. Extension of an NC verification system to model the impact of very small CNC performance errors (geometric and thermal machine errors) on the workpiece introduces additional and very stringent demands. Typical performance errors can

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Fast Simulation of Sculptured Surface Milling with 3-Axis NC Machineation method based on the dexel representation of the workpiece is widely used. In this method, a milling process is geometrically evaluated by subtracting successive tool swept volumes along the path from a collection of thin vertical dexel cubes representing the workpiece shape. Two technologies f

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