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NX5 FOR ENGINEERING DESIGN
by
Ming C. Leu
Akul Joshi
Department of Mechanical and Aerospace Engineering
Missouri University of Science and Technology
Rolla, Missouri 65409
INDEX
FOREWORD .................................................................................................................... 6
CHAPTER 1 - INTRODUCTION................................................................................... 7
1.1 PRODUCT REALIZATION PROCESS .........................................................................7
1.2 BRIEF HISTORY OF CAD/CAM DEVELOPMENT ....................................................8
1.3 DEFINITION OF CAD/CAM/CAE ................................................................................9
1.3.1 Computer Aided Design – CAD.............................................................................. 9
1.3.2 Computer Aided Manufacturing – CAM .............................................................. 10
1.3.3 Computer Aided Engineering – CAE.................................................................... 10
1.4 SCOPE OF THIS TUTORIAL ......................................................................................10
CHAPTER 2 - GETTING STARTED .......................................................................... 12
2.1 OPENING NX5 SESSION AND FILES .......................................................................12
2.1.1 Open NX5.............................................................................................................. 12
2.1.2 Open a New File .................................................................................................... 13
2.1.3 Open a Part File ..................................................................................................... 14
2.2 PRINTING, SAVING AND CLOSING PART FILES .................................................15
2.2.1 Print a NX5 Image................................................................................................. 15
2.2.2 Save Part Files ....................................................................................................... 15
2.2.3 Close Part Files...................................................................................................... 16
2.2.4 Exit an NX5 Session.............................................................................................. 16
2.2.5 Simultaneously Saving All Parts and Exiting ....................................................... 17
2.3 NX5 INTERFACE .........................................................................................................17
2.3.1 Mouse Functionality .............................................................................................. 17
2.3.2 NX5 Gateway ........................................................................................................ 20
2.3.3 Geometry Selection ............................................................................................... 23
2.3.4 User Preferences .................................................................................................... 25
2.3.5 Applications........................................................................................................... 28
2.4 COORDINATE SYSTEMS ...........................................................................................29
2.4.1 Absolute Coordinate System ................................................................................. 29
2.4.2 Work Coordinate System ...................................................................................... 29
2.4.3 Existing Coordinate Systems................................................................................. 29
2.4.4 Move the WCS ...................................................................................................... 29
2.5 USING LAYERS ...........................................................................................................31
2.5.1 Layer Control......................................................................................................... 31
2.5.2 Commands in Layers ............................................................................................. 31
2.6 IMPORTANT COMMANDS/DIALOGS .....................................................................35
2.6.1 Toolbars ................................................................................................................. 35
2.6.2 Transform Functions ............................................................................................. 38
CHAPTER 3 - FORM FEATURES .............................................................................. 40
3.1 OVERVIEW...................................................................................................................40
3.2 TYPES OF FEATURES ................................................................................................40
3.3 PRIMITIVES .................................................................................................................43
NX5 for Engineering Design
Missouri University of Science and Technology
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3.3.1 Model a Block ....................................................................................................... 44
3.3.2 Model a Shaft ........................................................................................................ 45
3.4 REFERENCE FEATURES............................................................................................49
3.4.1 Datum Plane .......................................................................................................... 49
3.4.2 Datum Axis............................................................................................................ 50
3.5 SWEPT FEATURES......................................................................................................52
3.5.1 Extruded Body....................................................................................................... 52
3.6 REMOVE FEATURES..................................................................................................55
3.7 EXERCISE - MODEL A WASHER .............................................................................60
CHAPTER 4 – FEATURE OPERATIONS ................................................................. 61
4.1 OVERVIEW...................................................................................................................61
4.2 TYPES OF FEATURE OPERATIONS.........................................................................61
4.3 FEATURE OPERATIONS ON MODELS....................................................................66
4.3.1 Model a Hexagonal Screw..................................................................................... 66
4.3.2 Model an L-Bar ..................................................................................................... 71
4.3.3 Model a Hexagonal Nut......................................................................................... 79
4.3.4 Model a Rack with Instances................................................................................. 82
4.4 EXERCISE - MODEL A CIRCULAR BASE ...............................................................86
CHAPTER 5 – DRAFTING........................................................................................... 88
5.1 OVERVIEW...................................................................................................................88
5.2 DRAFTING OF MODELS ............................................................................................89
5.2.1 Drafting.................................................................................................................. 89
5.2.2 Dimensioning ........................................................................................................ 95
5.2.3 Sectional View....................................................................................................... 99
5.2.4 Drafting and Dimensioning of an Impeller hexagonal bolt................................. 100
5.3 EXERCISE - DRAFTING AND DIMENSIONING OF A CIRCULAR BASE.........105
CHAPTER 6 – SKETCHING...................................................................................... 106
6.1 OVERVIEW.................................................................................................................106
6.2 SKETCHING FOR CREATING MODELS................................................................107
6.2.1 Model an Arbor press Base ................................................................................. 107
6.2.1.1 Sketch Curve Toolbar ................................................................................. 109
6.2.1.2 Constraints Toolbar..................................................................................... 111
6.2.1.3 Sketcher Toolbar......................................................................................... 112
6.2.2 Model an Impeller Lower Casing........................................................................ 120
6.2.3 Model an Impeller ............................................................................................... 129
6.3 EXERCISES.................................................................................................................134
CHAPTER 7 – FREEFORM FEATURE ................................................................... 137
7.1 OVERVIEW.................................................................................................................137
7.1.1 Creating Freeform Features from Points ............................................................. 137
7.1.2 Creating Freeform Features from Section Strings............................................... 138
7.1.3 Creating Freeform Features from Faces .............................................................. 140
7.2 FREEFORM FEATURE MODELING .......................................................................140
7.2.1 Modeling with points........................................................................................... 140
NX5 for Engineering Design
Missouri University of Science and Technology
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7.2.2 Modeling with a point cloud................................................................................ 143
7.2.3 Modeling with curves .......................................................................................... 146
7.2.4 Modeling with curves and faces .......................................................................... 149
7.3 EXERCISE - MODEL A MOUSE ..............................................................................151
CHAPTER 8 – ASSEMBLY MODELING ................................................................ 152
8.1 OVERVIEW.................................................................................................................152
8.2 TERMINOLOGIES .....................................................................................................152
8.3 ASSEMBLY MODELS ...............................................................................................153
8.3.1 Top-Down Approach........................................................................................... 153
8.3.2 Bottom-Up Approach .......................................................................................... 154
8.3.3 Mixing and Matching .......................................................................................... 154
8.4 MATING CONDITIONS ............................................................................................154
8.5 IMPELLER ASSEMBLY ............................................................................................156
8.6 EXPLODED VIEW OF IMPELLER ASSEMBLY ....................................................169
8.7 EXERCISE - ARBOR PRESS ASSEMBLY...............................................................174
CHAPTER 9- MANUFACTURING ........................................................................... 175
9.1 GETTING STARTED WITH MANUFACTURING MODULE ................................175
9.1.1 Creation of a Blank.............................................................................................. 176
9.1.2 Setting Machining Environment.......................................................................... 177
9.1.3 Operation Navigator ............................................................................................ 178
9.1.4 Machine Coordinate System (MCS) ................................................................... 179
9.1.5 Geometry Definition............................................................................................ 180
9.2 CREATING OPERATION AND PARAMETER SETTING .....................................181
9.2.1 Creating a new Operation .................................................................................... 181
9.2.3 Tool Creation and Selection ................................................................................ 182
9.2.4 Tool Path Settings................................................................................................ 184
9.2.4 Step Over and Scallop Height: ............................................................................ 185
9.2.5 Depth per cut ....................................................................................................... 186
9.2.6 Cutting Parameters .............................................................................................. 188
9.2.7 Avoidance............................................................................................................ 189
9.2.8 Speeds and Feeds................................................................................................. 191
9.3 PROGRAM GENERATION AND VERIFICATION.................................................193
9.3.1 Generating Program............................................................................................. 193
9.3.2 Tool Path Display ................................................................................................ 194
9.3.3 Tool Path Simulation ........................................................................................... 194
9.3.4 Gouge Check ....................................................................................................... 196
9.4 OPERATION METHODS ...........................................................................................197
9.4.1 Roughing ............................................................................................................. 197
9.4.2 Semi-Finishing .................................................................................................... 198
9.4.3 Finishing Profile .................................................................................................. 201
9.4.4 Finishing Contour Surface................................................................................... 207
9.4.5 Flooring ............................................................................................................... 210
9.5 POST PROCESSING...................................................................................................214
9.5.1 Creating CLSF..................................................................................................... 214
9.5.2 Post-Processing.................................................................................................... 216
NX5 for Engineering Design
Missouri University of Science and Technology
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CHAPTER 10- FINITE ELEMENT ANALYSIS...................................................... 217
10.1 INTRODUCTION......................................................................................................217
10.1.1 Element shapes and nodes ................................................................................. 217
10.1.2 Structure Module ............................................................................................... 219
10.1.3 Simulation Navigator......................................................................................... 221
10.2 SOLUTION CREATION...........................................................................................221
10.2.1 Material Properties ............................................................................................ 223
10.2.2 Loads ................................................................................................................. 224
10.2.3 Boundary Conditions......................................................................................... 225
10.2.4 Meshing ............................................................................................................. 226
10.3 SOLVING AND RESULT SIMULATION...............................................................228
10.3.1 Solving the Scenario.......................................................................................... 228
10.3.2 FEA Result ........................................................................................................ 229
10.3.3 Simulation.......................................................................................................... 231
10.4 EXERCISE - ARBORPRESS L-BAR .......................................................................235
NX5 for Engineering Design
Missouri University of Science and Technology
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