computer numerically controlled (cnc) machining...
TRANSCRIPT
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Computer Numerically Controlled (CNC) Machining and Tool Path
Programming
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CNC Machining of Complex Surface PartsCNC Machining of Complex Surface Parts
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2 ½ and 3 Axis Milling
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Face Milling
Pocketing
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Three-Axis CNC Machines• In 3-axis CNC vertical machine, the working table
moves along x- and y-axis, and the tool along z-axis.
• In machining, tool orientation is fixed, either in vertical or horizontal direction.
• If all surfaces to be machined are accessible by the cutter in one setup, select a 3-axis CNC machine.
Synchronized Motions in 3 Axis
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Five-Axis CNC Machines
• X-, Y-, and Z- Axis Motions and A- and B- axis Rotations (Simultaneously)
• Tool orientation can be changed simultaneously during machining.
• If some surface patches to be machined are not accessible by the cutter in one setup, consider to use a 5-axis CNC machine.
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Five-Axis CNC Machines
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Five-Axis CNC Machining
Cincinnati V5-2000 5-Axis CNC Machining Center
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Machined Surface
CAD Model of the SurfaceTool Path GenerationSimulation of CuttingAccuracy of the Machined SurfaceOver-cut and Over Cut Detection
Trails
Cutter contact point
Tool path
Trail patches
Cusp
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Computer-Aided Manufacturing (CAM)CNC Tool Path Programming
• …• Automatic Tool Paths Generation for CNC
Machining from CAD Models• Tool Path Verification and Graphical
Simulation of CNC Machining
• CNC Post-Processor for Machine Dependant G-code Generation
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Tool Path Generation, Machining Simulation
3-Axis Milling
• Fixture
• Cutter
• Part
• Workpiece
NC Sequence
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Tool Path Generation and Machining Simulation
Generate 3-axis CNC tool paths for the mold of a phone handset
Verify the tool paths and
simulate the milling process
The digital result of the virtual
CNC machining
Flat, Torus and Ball End Mill
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2 ½ Axis Rough Machining
• Stock (or Workpiece in Pro/Mfg)• Mechanical Part• 2D Contours for Layered
Machining• Tool Path for Example 2D
Layers
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Different Tool Path Patterns
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Conventional Surface Face Pocket
Profile Trajectory
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Cutter, Part Surface, Surface Normal,
Tolerance Surface, Tool Path, Cusp
X
Y
Z
Steepest-DirectedTool Paths
Iso-Cusped Tool Paths
Surface Normal
l-axis
Planar Cutting Edge
Tolerance surface
Effective Cutting Edge
Cutter Contact Point
Steepest-Directed & Iso-Cusped Tool Paths
Cusp
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Parallel-Plane-Guided and Radial Tool Paths
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Setting Up Tools
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Setting Up Machining Parameters
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Pro/Mfg
Menu
System
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VERICUT Interface to Major CAD/CAM Systems
Pro/E has licensed a CNC simulation module from VERICUT
– with no machine tool modeling capability
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Simulation of CNC Machining (VERICUT)
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Machining Simulation and Tool Path Verification
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5-Axis CNC Milling Based
on a CAD Model of Boat
Design
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Different CNC Machines & Tasks
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CNC Milling Simulation - CUSP
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Gouge Detection
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Collision and Gouge Detection - Flat End Mill
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Collision and Gouge Detection - Torus End Mill
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EDM CNC Simulation