Cad/Cam Report
Assignment 2
Producing a part using a CAD/CAM system
Greg Mc Elroy - 24 March 2011
Contents 1 Introduction 2 CAD/CAM Systems 3 Assignment 4 Dimensioned CAD drawings 5 Spindle Speed Calculation 6 CAM Drawing 7 NC Code 8 Simulation Image 9 Discussion 10 References page3 page3 page4 page5 page6 page7 page9 page11 page11 page12
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1 Introduction This report has been compiled to document the processes involved when undertaking a project using a CAD/CAM system. A Brazilian football club’s logo has been chosen as an image to draw using the alphacam software package. The aim of the project is to generate the tool paths required to machine the part using a CNC milling machine. 2 CAD/CAM Systems A CAD/CAM system is a computer based platform used for manufacturing component parts on fully automated Computer Numerically Controled (CNC) production machines, generally milling machines or lathes. The CAD software produces geometries on PCs or laptops, the CAD file is exported to a CNC machine and a finished part is produced at the click of button. CAD/CAM systems are generally used in industry for high spec, high volume production so as to increase output efficiency and lower production costs. Historical development: • 15th century - machining metal. • 18th century - industrialization, production-type machine tools. • 20th century : - F.W. Taylor - tool metal – HSS - Automated production equipment - Screw machines - Transfer lines - Assembly lines - cams and preset stops - Programmable automation - NC - PLC - Robots The primary purpose of CAD/CAM is to describe the geometric form of objects that are to be manufactured. CAD is primarily a visual representation of an object while CAM deals with the physical tool movements required to produce the object. As a result the geometric form of the object is different in CAD than it is in CAM. Therefore in order to transfer information between the two systems there must be some means of translating the CAD model into the CAM
Producing a part using a CAD/CAM system
Greg Mc Elroy - 24 March 2011
Contents 1 Introduction 2 CAD/CAM Systems 3 Assignment 4 Dimensioned CAD drawings 5 Spindle Speed Calculation 6 CAM Drawing 7 NC Code 8 Simulation Image 9 Discussion 10 References page3 page3 page4 page5 page6 page7 page9 page11 page11 page12
2
1 Introduction This report has been compiled to document the processes involved when undertaking a project using a CAD/CAM system. A Brazilian football club’s logo has been chosen as an image to draw using the alphacam software package. The aim of the project is to generate the tool paths required to machine the part using a CNC milling machine. 2 CAD/CAM Systems A CAD/CAM system is a computer based platform used for manufacturing component parts on fully automated Computer Numerically Controled (CNC) production machines, generally milling machines or lathes. The CAD software produces geometries on PCs or laptops, the CAD file is exported to a CNC machine and a finished part is produced at the click of button. CAD/CAM systems are generally used in industry for high spec, high volume production so as to increase output efficiency and lower production costs. Historical development: • 15th century - machining metal. • 18th century - industrialization, production-type machine tools. • 20th century : - F.W. Taylor - tool metal – HSS - Automated production equipment - Screw machines - Transfer lines - Assembly lines - cams and preset stops - Programmable automation - NC - PLC - Robots The primary purpose of CAD/CAM is to describe the geometric form of objects that are to be manufactured. CAD is primarily a visual representation of an object while CAM deals with the physical tool movements required to produce the object. As a result the geometric form of the object is different in CAD than it is in CAM. Therefore in order to transfer information between the two systems there must be some means of translating the CAD model into the CAM
References: (http://moodle1011.dkit.ie/file.php/11512/2_CNC_history_prog.pdf) (http://en.wikipedia.org/wiki/G-code) (http://www.cncezpro.com/gcodes.cfm) 12