Computer Numerical Controlled Machining and Computer Aided Manufacturing

Mastercam Mastercam post processor has a built-in G-code generation for the machine … Manual programming and provides details about the actual ….

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Computer Numerical Controlled Machining and Computer Aided Manufacturing
1.0 Introduction to CNC CAD/CAM Lab… 5
1.1 Instructional Objectives… 5
1.2 Safety… 5
2.0 Computer Numerical Control Systems… 7
2.1 Defining Numerical Control… 7
2.2 Advantages of NC and CNC Machining … 10
2.3 Coordinate Systems and Machine Motions… 11
3.0 Machining Fundamentals … 16
3.1 Machining Operations and Machining Practice … 16
3.2 Determining Cutting Conditions and Performance … 18
4.0 Manual Part Programming… 21
4.1 Introduction to G Code… 22
4.2 Programming Examples… 22
5.0 Computer Assisted Part Programming/Computer Aided Manufacturing Software … 27
5.1 Mastercam… 28
5.2 Post Processing… 31
6.0 CNC Milling Machine Setup and Operation… 32
6.1 Haas VF1 CNC Milling Machine… 32
7.0 Abrasive Waterjet Machining… 36
7.1 Introduction to Technology… 36
7.1 Comparison to Other Technologies… 39
7.3 Case Study… 39
7.4 Machine Setup… 41
7.5 Creating a DXF File… 41
7.6 FlowPATH Software… 42
7.7 FlowCUT Software… 44
Appendices
A. References… 47
B. Reference Tables for Standard Drill, Tap, and Screw Sizes … 48
C. Haas VF1 Control Panel… 50
D. G-Code References… 59
List of Figures

AML Laboratory Manual
4.1 A simplified schematic of an NC system…. 8
4.2 Computer numerical control (CNC) system schematic… 9
4.3 DNC System Configurations…. 9
4.4 Right hand coordinates for vertical milling machines… 12
4.5 CNC lathe coordinate system…. 12
4.6 Absolute versus incremental positioning…. 13
4.7 Comparison of control system paths…. 14
4.8 Two-dimensional NC contouring… 15
4.9 Three-dimensional NC contouring… 15
4.10 Peripheral milling; up milling and down milling shown considerably exaggerated to illustrate the principle of operation… 18
4.11 Pocket Milling… 18
4.12 Milling Tool Parameter Illustrations… 29
4.13 Tool Length Offset… 35
4.14 Water Jet Nozzle… 36
4.15 Abrasive Water Jet Nozzle… 36
4.16 Jet Lag in thick part… 37
4.17 Corner Blowout… 38
4.18 Curve Taper… 38
4.19 Yo-Yo Contact… 40
4.20 Grid Part Layout… 42
4.21 Nested Parts… 42
4.21 Lead In / Lead Out… 43
List of Tables
4.1 Recommended Surface Speed and Chip Load for Slotting Operations on Different Materials (HSS End Mills with Small Diameters (d<0.25\'))… 20
4.2 G Code using G02… 26
4.2 Tool Parameters… 30

Download Computer Numerical Controlled Machining and Computer Aided Manufacturing pdf from mfg.eng.rpi.edu, 67 pages, 657.11KB.
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