cad/cam hardware & software - dawood...
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CAD/CAM COURSE
TOPIC OF DISCUSSION
CAD/CAM HARDWARE & SOFTWARE
3/25/2011 1DAWOOD COLLEGE OF ENGINEERING &
TECHNOLOGY- KARACHI
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3/25/2011DAWOOD COLLEGE OF ENGINEERING &
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STORAGE DEVICES
INPUT DEVICES SYSTEM UNIT OUTPUT DEVICES
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a. Input Devices
Keyboard Mouse Trackball, Joystick Touch Pad Thumbwheel Light-Pen Digitizer
b. Output Devices
LCD 3D Printing Machine Printers Plotter
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c. System Unit Components
Motherboard Processor RAM Cards (graphic, Video
etc.( LAN Ports & Connectors Buses & Slots Power Supply etc.
d. Storage Devices
Hard disk Floppy CD ROM DVD ROM Pen Drive
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3/25/2011DAWOOD COLLEGE OF ENGINEERING &
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CAD/CAM APPLICATION SOFTWARE
CAD APPLICATION SOFTWARE
CAM APPLICATION SOFTWARE
DRAFTINGANALYSISMODELING CONTROLANALYSIS
PART PROGRAMMING
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• The CAD application software may be of modeling, analysis ordrafting type
• The CAM applications is used for generating the CNC part programor to simulate motion and control the machine
• The modeling application software can generate 2D and 3D modelsusing softwares like Pro/E, Solid Edge, Solid Works, Inventor,Neoform etc.
• These models are analyzed using various application software forspecific function. ANSYS, NASTRAN are some of the examples ofsuch softwares
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CAD/CAM software consist of following parts;
1. Type of a software
2. Data Structure
3. Database
4. Database Management System (DBMS)
5. Coordinate Systems
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1. TYPE OF SOFTWARE
The different kinds of software are being used in a typical CAD/CAM
environment for distinct applications
These applications may be design/modeling, analysis, drawing,
documentation and manufacturing
Modeling is crafting a virtual model. The model may be of wire frame,
surface model or solid model.
Feature based modeling; variational modeling and parametric modeling
etc are some of the techniques
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• Operating conditions are simulated in Analysis. Theanalysis may be stress analysis, fracture analysis,heat transfer etc.
• Once the model is ensured to be safe the actualworking conditions, production drawings are to begenerated
• These drawings can be generated using ComputerAided Drafting & Documentation (CADD)
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• CAM also uses geometric data of the model andcan generate NC part programs and process planusing appropriate software
• This can also be done computer aided robotprogramming and automation
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2. DATA STRUCTURE
The data in terms of CAD/CAM may be basic entitiesor primitives, which are used to make the part ormodel
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• Data structure is a way of storing data in acomputer so that it can be used efficiently
• A well designed data structure allows a verity ofcritical operations to be performed, using as littleresources, both execution time and memory space,as possible
• Different kind of data structures are suited todifferent kinds of applications, and some are highlyspecialized to certain task
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3. DATABASE
• A database is a collection of information stored in acomputer in a systematic way
• The CAD/CAM database of software may includethe part libraries, the geometric relationships,material properties, analysis algorithms etc.
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4. DATABASE MAMAGEMENT SYSTEM (DBMS)
• An approach used to manage a database is known asdatabase management system
• A user can interact with the software only throughdatabase management system
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DATABASE DBMSUSER
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5. COORDINATE SYSTEM
• World Coordinate System
Software Default
• User Coordinate System
Define by user
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