cadcam routing ppt rd6
TRANSCRIPT
8/2/2019 Cadcam Routing Ppt Rd6
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Manufacturing Systems
Rd 6 Technology
CAD/CAM
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CAD/CAM Workshops
Contents:
• CNC Machine Types
• CNC Routers and applications
• 2-D & PCB machining
• Practical Exercises
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Objectives
• Introduce CNC routing techniques & principles
• Experience CAD / CAM design software
• Experience the use of CNC routing to: -(i) Carry out a simple 2-D machining exercise(ii) Manufacture a PCB
CAD/CAM Workshops
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CAD/CAM Workshops
Types of CNC machine: -
• CNC Lathes - Cylinders, Tapers, Threads, Flat surfaces
• Laser Technology – Accurate 2D profiles from Wood & Plastics
• CNC Routers – Versatile; 2D, 3D, Scan in 3D & PCB manufacture
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CNC Routing
2-D profile cutting
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CNC Routing
PCB Manufacture
PCB Design Machined PCB
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CNC Routing
3-D Machining
CAD Model Machined Part
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Self Centering Vice
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CNC Routing
3D Scanning
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2D Routing
Engraving
Relief on a curved surfaceText
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CNC Routing
Lithopane Machining
Light Box Monochrome Images
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Degrees of Freedom
CNC three axis routing
Axis orientation for router
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Using a CNC Routing Machine
Main aspects: -
• Working holding
• Toolsetting – Datum point & Offsets
• Programming – Software
• Operation of the machine
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Desk Tidy Project
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2D routing example
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Tool offsets and depths
Order / Machine Plan
1. Machine Pocket
2. Remove holes
3. Engrave Text
4. Cut through profile
2 mm Dia. Slot Cutter
1 mm contour offset
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When 2D Routing
Issues to consider: -
• Each software package takes a distinctive and unique
approach to addressing the above
•Items such as pockets, islands etc need to be identifiedand dealt with.
• Motion of the tool is often quite different from the shapebeing produced, e.g. hole
• Speeds, Feeds need to be added.
• Clearance moves between profiles
• Tools, Offsets, Depths of Cut
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TechSoft Exercise
Picture Holder
T hS f E i
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TechSoft Exercise
Software: -
• TechSoft 2D Design - 2D Machining
• Techsoft PCB Design & Make – PCB manufacture
• Visual Tool Path - 3D machining
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TechSoft Exercise
• Use setup file ‘Frame Template.CFG’ • Open Template file ‘Frame TEMPLATE.dtd’
• Machine part
• Add Text
• Edit to incorporate text in profile• Add tool path
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PCB Manufacture
Circuit design PCB layout generated
Motor Control Circuit
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PCB Manufacture
Important Considerations
• Flatness of PCB on machine table - Size
• Tracks etc should be adjusted before export to CAD/CAM software
• Placement of components
• Track Width and Isolation Gap
• Full copper removal
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PCB Manufacture Denford Router
Software : -
• QuickCAM 2D Design - 2D profile work • VR Milling V5 - Control software, PCB manufacture
• QuickCAM Pro – 3D & Lithopane Machining,
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PCB Manufacture Denford Router
• No hazardous chemicals
• Dry machine tracks using Vee engraving tool
• Drill holes using PCB drillOr
• Spot with vee tool and drill by hand
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Specific Neutral File formats
Gerber Files
Required by VR Milling for PCB production
Created as a set – one layer to a file
Need to identify which file contains items of interest
Drill file
Solder Side