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[mark-b@cs.utah.edu](mark-b@cs.utah.edu)  \nRobert Zeleznik2 Brown University [bcz@cs.brown.edu](bcz@cs.brown.edu)  \nRussell Fish1 University of Utah 􀀌sh@cs.utah.edu  \nLoring Holden2 Brown University [lsh@cs.brown.edu](lsh@cs.brown.edu)  \nAndrew Forsberg2 Brown University [asf@cs.brown.edu](asf@cs.brown.edu)  \nRichard Riesenfeld1 University of Utah [rfr@cs.utah.edu](rfr@cs.utah.edu)  \nMatt Cutts3 UNC Chapel Hill [cutts@cs.unc.edu](cutts@cs.unc.edu)  \nSamuel Drake1 University of Utah [drake@cs.utah.edu](drake@cs.utah.edu)  \nHenry Fuchs3 UNC Chapel Hill [fuchs@cs.unc.edu](fuchs@cs.unc.edu)  \nElaine Cohen1 University of Utah [cohen@cs.utah.edu](cohen@cs.utah.edu)  \nABSTRACT  \nSketch-N-Make is a prototype system that enables individuals to create dimensioned designs quickly for a restricted, but broadly useful, domain of machined metal and plastic prismatic parts. Process plans, 􀀌xturing, tool selection, feeds and speeds, and toolpaths are automatically generated from the designs allowing parts to be manufactured on a machining center with the aid only of a technician who prepares and loads the stock and cutting tools.  \nThe system employs a gestural interface that exploits familiar pencil sketching paradigms to allow users to create and manipulate geometry without specifying the details required for manufacturing. The system transforms the geometry into a highlevel feature-based model that represents the geometry and additional information from which machining features are derived.  \nThe sketching interface has mechanisms to constrain and parameterize 3D model geometry in ways required for precise part design and design iteration. The user can modify iteratively the geometric representation causing the system to automatically update the feature-based model accordingly. Then the system generates the necessary machining operations to manufacture the geometry on a machining center according to a family of process plans.  \nThe synergy between the choices for part domain, user interface, and process plan family helps provide a smooth and rapid  \n1 Department of Computer Science, University of Utah, 50 South Central Campus Drive, Room 3190, Salt Lake City, Utah 84112-9205  \n2 Brown University, Box 1910 Department of Computer Science, Providence, RI 02912  \n3 Department of Computer Science, University of North Carolina at Chapel Hill, Sitterson Hall, CB 3175, Chapel Hill, NC 27599  \npathway from concept to detailed design to machined metal or plastic parts.  \nINTRODUCTION  \nSketch-N-Make is a prototype art-to-part system that allows users to quickly design a non-trivial class of dimensioned machined metal and plastic prismatic parts. These parts may then be automatically manufactured on a machining center with the aid only of a technician who prepares and loads the stock and cutting tools.  \nOne goal for this system is to allow a broader class of users, those without manufacturing expertise, to produce manufacturable designs more rapidly and with less expense. Another goal is to provide a smooth pathway from original concept through 􀀌nished machined part. Along this pathway, we want to allow the user to concentrate primarily on the geometric and parametric aspects of the design and be concerned only minimally with issues of its manufacture. The process plan, 􀀌xturing, tool selection, feeds and speeds, and toolpaths necessary to actually manufacture the part are then generated automatically from the design.  \nOne set of impediments to attaining these goals follows from the way in which users typically interact with CAD systems. Many designers sketch with pencil and paper asthe preferred, unencumbered, way to visualize early stage geometric concepts. However, most CAD systems require detailed and complete speci􀀌cations for ","cbCaihn1Zjemzygl","https://ap.wps.com/l/cbCaihn1Zjemzygl","pdf",176066,"English","# Abstract\n# Introduction\n## System goals and user interaction\n## CAD interface limitations\n## Challenges in automated manufacturing\n## Interpretation\n## Process plan\n## Fixturing\n## Accessibility","[{\"question\":\"What is Sketch-N-Make intended to do?\",\"answer\":\"Sketch-N-Make enables users to quickly create dimensioned CAD sketch designs and automatically generate the machining data needed to manufacture metal or plastic prismatic parts on a machining center.\"},{\"question\":\"How does the system support sketch-based design input?\",\"answer\":\"It uses a gestural interface based on familiar pencil sketching paradigms, allowing users to create and manipulate geometry without specifying detailed manufacturing information.\"},{\"question\":\"What kinds of manufacturing knowledge does the system generate automatically?\",\"answer\":\"It automatically derives process plans, fixturing strategies, tool selection, feeds and speeds, and toolpaths from the feature-based representation of the design.\"}]","SKETCH-N-MAKE: AUTOMATED MACHINING OF CAD SKETCHES | PDF",1789161835]