Designed using a CAD program Computer Aided Process Planner (CAPP) Computer Aided Machining (CAM)

The Haas VF-3 at Berkeley

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CAD  (Computer Aided Design)

Part is designed by anyone

•  Create and submit online through Berkeley’s WebCAD service

•  Make file in other CAD program and send via the internet

Uses DSG (destructive solid geometry)

            •  Starts from a chunk of solid and cuts away

Constrained to removing these shapes of material (features):

            •  Face-off operations

            •  Pockets

            •  Blind holes

            •  Through holes

            •  Arcs

  CAPP (Computer Aided Process Planner)

Divided into Two Parts

            •  Macro Planner

                        •  Determines the best tool to be used

                        •  Decides which fixturing steps to be used

            •  Sends individual features to micro planner

            •  Micro Planner

                        •  Accesses a tooling database for the open architecture machine

                                    •  Arch machine cuts final part

                                    •  Divides features into series of cutting operations

                                    •  Operation are assigned tools, cutting paths, feeds, and speeds

                        •  Two types of planners to choose from

                                    •  Incremental CAPP

•  Manufacturing plan is updated after each feature is added

•  Either accepts part or notifies user of violation

•  Hard violation (can’t be manufactured)

•  Soft violation (can be manufactured but not at the tolerance)

•  Batch-Mode CAPP

•  Sent to machine when design is done

•  Doesn’t check for violations

CAM (Computer Aided Machining)

Machining script is sent to the machine’s computer

            •  Program can be edited

                        •  High-level programming

                                    •  Accomplishes complicated machining tasks automatically

                                    •  Helps overcome errors from tool wear & deflection and material deformation

                        •  Mid-level programming

                                    •  Point to point moves

                        •  Low-level programming

                                    •  Real-time control of voltage outputs

                                    •  Can adjust acceleration

            •  Reference-free part encapsulation (RFPE)

                        •  This makes CyberCut so unique

                                    •  Uses this encapsulation technology

                                    •  Variety of materials available

                                    •  Makes intricate shapes and cuts

                        •  Uses Rigidax, a bi-phase material, to encapsulate the work piece and support it during machining

                                    •  A side is machined off

•  Rigidax is added to return it to the original block shape

•  Process is repeated until machining is complete

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