Maximizing Autodesk Mechanical Desktop

by Cheng,Ron K.C.

• ISBN13: 9780766833074
• ISBN10: 0766833070
• Edition: CD
• Format: Paperback
• Copyright: 2001-11-26
• Publisher: Cengage Learning

Summary

Gain a first-hand understanding of computer modeling concepts as you discover the secrets of using Mechanical Desktop 6 to construct 3D parametric solid parts, generate assemblies, produce 3D NURBS-based surface models, and output 2D engineering drawings! New from Autodesk Press, Maximizing Autodesk Mechanical Desktop is a "must" for mechanical engineers and engineering students alike. Unlike cookbook-style tutorials, this book propels readers to an understanding of computer-aided design theory while offering in-depth instruction in the whys and hows of using Mechanical Desktop to save time and enhance productivity. The first chapter begins with an overview of computer modeling concepts, explains how 3D objects are represented on computer, and introduces readers to the Mechanical Desktop 6 user interface (including use of the desktop browser). Using carefully engineered examples and exercises, subsequent chapters lead readers through the ins and outs of each of the four Mechanical Desktop modules: part modeling, assembly modeling, surface modeling, and engineering drafting. Instruction in converting AutoCAD solids to Mechanical Desktop solids, editing static base solid features by leveraging AutoCAD solid editing tools, and using the feature exchange add-on is also included to empower readers with the expertise needed to fully exploit the power of their software.

Table of Contents

Preface	xv
Features of this Edition	xv
Style Conventions	xvii
How to Use this Book	xvii
Online Companion	xvii
About the Author	xvii
Acknowledgments	xviii
Computer Modeling	1	(26)
Overview	1	(1)
Computer Modeling Concepts	2	(7)
Representation	2	(1)
Traditional 2D Approach	2	(1)
3D Model	3	(4)
Choice of Model	7	(1)
Modeling Method	7	(1)
Assembly Modeling	8	(1)
Engineering Drafting	9	(1)
Using Mechanical Desktop	9	(16)
File Type	9	(1)
User Interface	10	(4)
Command Entry	14	(1)
Layers	14	(1)
AutoCAD 2002 tools	15	(1)
Parametric Solid Modeling Tool	15	(2)
Assembly Modeling Tool	17	(1)
Surface Modeling Tool	18	(4)
Associative Engineering Drafting Tool	22	(1)
Compatibility and Interoperation	23	(1)
Options	24	(1)
Summary	25	(1)
Review Questions	26	(1)
Parametric Sketching	27	(34)
Overview	27	(1)
Parametric Sketching Concepts	27	(4)
Sketching	27	(3)
Manipulating Geometric Constraints	30	(1)
Adding Parametric Dimensions	30	(1)
Options	31	(3)
Distance and Angular Tolerances	31	(2)
Apply Constraint Rules and Assume Rough Sketch	33	(1)
Other Part Modeling Options	33	(1)
Constructing Parametric Sketch	34	(9)
Sketching	34	(1)
Resolving a Sketch	35	(1)
Manipulating Geometric Constraints	36	(2)
Manipulating Parametric Dimensions	38	(5)
Desktop Browsers	43	(1)
Types of Browsers	43	(1)
Sketching Techniques	44	(6)
Construction Geometry	45	(2)
Append and Re-solve	47	(1)
Multiple Sketches	48	(1)
Text Sketch	49	(1)
Other Sketching Techniques	50	(1)
Copy Sketch	50	(1)
Copy Edge	50	(1)
Summary	51	(1)
Projects	51	(9)
Steering Shaft	52	(1)
Clip	52	(2)
Axle	54	(1)
Screw Cap	54	(1)
Wheel Cap	55	(1)
Nut	56	(1)
Wheel	57	(2)
Frontal Frame	59	(1)
Review Questions	60	(1)
Part Modeling I	61	(48)
Overview	61	(1)
Visualization	62	(2)
Orbit	62	(1)
Display Mode	63	(1)
Lights	63	(1)
Sketched Features: Extrude, Revolve, and Bend	64	(6)
Extruded Solid Feature	64	(2)
Revolved Solid Feature	66	(2)
Bend Feature	68	(2)
Boolean Operations	70	(13)
Join	70	(7)
Cut	77	(1)
Intersect	78	(3)
Split	81	(2)
Editing	83	(8)
Edit Sketch of a Feature	83	(1)
Update	84	(1)
Edit Feature	85	(1)
Reorder Features	86	(3)
Feature Suppression	89	(1)
Delete Feature	90	(1)
Replay	91	(1)
Base Part	91	(1)
Mass Properties	91	(3)
Attributes	94	(1)
Summary	95	(1)
Projects	95	(12)
Clip	95	(1)
Axle	96	(1)
Screw Cap	96	(1)
Wheel Cap	97	(1)
Wheel	98	(1)
Nut	99	(1)
Bolt	100	(2)
Frontal Frame	102	(3)
Parts for the Infant Scooter	105	(2)
Review Questions	107	(2)
Part Modeling II	109	(98)
Overview	109	(1)
Work Features	110	(16)
Work Planes	110	(11)
Work Axis	121	(3)
Work Points	124	(1)
Visibility of Work Features	125	(1)
Sketched Features: Rib, Sweep, and Loft	126	(31)
Rib Feature	126	(3)
Sweep Features	129	(21)
Copy Edge, 3D Edge Path, and 3D Pipe Path	150	(4)
Loft Feature	154	(3)
Placed Features: Hole, Thread, Fillet, Chamfer, Shell, and Pattern	157	(21)
Hole Feature	157	(5)
Thread Feature	162	(2)
Fillet Feature	164	(2)
Chamfer Feature	166	(2)
Shell Feature	168	(2)
Pattern Feature	170	(8)
Summary	178	(1)
Projects	178	(28)
Wheel	178	(1)
Central Frame	179	(1)
Frontal Frame	180	(3)
Rear Frame	183	(2)
Steering Shaft	185	(1)
Tire	186	(1)
Seat	187	(4)
Threaded Bolt	191	(4)
Handle	195	(4)
Steering Wheel	199	(5)
Component Parts for the Infant Scooter	204	(2)
Review Questions	206	(1)
Assembly Modeling	207	(52)
Overview	207	(1)
Assembly Modeling Concepts	207	(12)
Linking to Solid Part Files	208	(1)
Assembly Catalog	209	(1)
Instance	210	(1)
Assembling the Component Parts	211	(8)
Design Approaches	219	(13)
Bottom-Up Approach	219	(1)
Top-Down Approach	220	(8)
Hybrid Approach	228	(4)
Choice of Approach	232	(1)
Manipulating Assembly and Component Definitions	232	(8)
External and Local Definitions	232	(1)
Copy in and Copy Out	233	(1)
In-place Editing	234	(3)
Basic 3D Work Planes	237	(1)
Replace	237	(1)
Where Used	238	(1)
Query	238	(1)
Audit	239	(1)
Refreshing External Component Parts	239	(1)
Analysis	240	(2)
Mass Properties	240	(1)
Interference	241	(1)
Minimum Distance	241	(1)
Assembly Optins	242	(2)
Summary	244	(1)
Projects	245	(13)
Constraint Manipulation	245	(5)
Front End of the Infant Scooter	250	(1)
Central Frame of the Infant Scooter	251	(1)
Rear End of the Infant Scooter	251	(2)
Seat Assembly of the Infant Scooter	253	(3)
Infant Scooter	256	(2)
Review Questions	258	(1)
Assembly Scene	259	(18)
Overview	259	(1)
Assembly Scene Concepts	260	(3)
Scene	260	(1)
Scene Construction	260	(2)
Activate Scene	262	(1)
Scene Visibility	262	(1)
Exploded Views	263	(4)
Explosion Factor	263	(1)
Tweak	264	(3)
Trail Lines	267	(1)
Scene Manipulation	268	(3)
Copy Scene	269	(1)
Rename Scene	269	(1)
Lock Scene	270	(1)
Update Scene	270	(1)
Suppress Sections	270	(1)
Scene Options	271	(1)
Summary	272	(1)
Projects	273	(3)
Front End of the Infant Scooter	273	(1)
Rear End of the Infant Scooter	274	(1)
Infant Scooter	275	(1)
Review Questions	276	(1)
Surface Modeling I	277	(80)
Overview	277	(1)
Surface Modeling Concepts	278	(5)
Polygon Mesh	278	(1)
NURBS Surface	279	(1)
Modeling Approach	279	(1)
Significance of Surface Model	280	(2)
Volume Representation	282	(1)
NURBS Surface Construction	283	(7)
Primitive Surfaces	283	(2)
Free-Form Surfaces	285	(3)
Derived Surfaces	288	(2)
Conversion	290	(1)
NURBS Surface Editing	290	(11)
Boundary Editing	290	(6)
Profile Editing	296	(3)
Normal Direction	299	(1)
Solid Operation	300	(1)
Conversion	301	(1)
3D Wires Construction	301	(6)
Augmented Lines	302	(1)
Joining Wires	302	(1)
Spline Fitting	303	(1)
Tangent Spline	303	(1)
Offsetting 3D Wires	304	(1)
Filleting 3D Wires	304	(1)
Intersection of Two Surfaces	304	(1)
Projecting a Wire	305	(1)
Copying Surface Edges	305	(1)
Extract Trim Boundaries	305	(1)
Cutting a Series of Section Lines	306	(1)
Generating Flow Lines	306	(1)
Generating a Parting Line	307	(1)
3D Wires Editing	307	(6)
Spline Edit	307	(4)
Unsplining	311	(1)
Refining a Wire	311	(1)
Changing the Direction of a Wire	312	(1)
Editing Augmented Lines	313	(1)
Utilities	313	(3)
Surface Analysis	313	(2)
Surface Display	315	(1)
Show Edge Nodes	315	(1)
Surface Mass Properties	315	(1)
Check Fit	316	(1)
Surface Modeling Options	316	(3)
Visibility	319	(1)
Summary	320	(1)
Projects	321	(35)
Oil Cooler	321	(1)
Helical Spring	322	(4)
Remote Control Surface Model	326	(19)
Remote Control Solid Model 1	345	(2)
Remote Control Solid Model 2	347	(1)
Mouse	348	(8)
Review Questions	356	(1)
Surface Modeling II	357	(62)
Overview	357	(1)
Surface Modeling Tools	357	(3)
Surface Construction	357	(1)
Surface Manipulation	358	(1)
3D Wire Construction	359	(1)
Wire Manipulation	359	(1)
Solid Operation	360	(1)
Summary	360	(1)
Projects	360	(58)
Model Car A	360	(19)
Model Car B	379	(37)
Model Car C	416	(2)
Review Questions	418	(1)
Part Modeling III	419	(72)
Overview	419	(1)
Surface Cut	420	(3)
Combination of Solid Parts	423	(6)
Part Splitting	429	(7)
Face Draft	436	(1)
Face Splitting	437	(4)
Design Variables	441	(10)
Design Variable File	441	(6)
Table-Driven Parts	447	(4)
Scale	451	(1)
Mirror	452	(1)
Make Base Part	452	(1)
Convert Autocad Solid	453	(9)
Base Feature Editing	462	(4)
Solid Part Export	466	(3)
Acis	466	(1)
VRML	467	(1)
STL	467	(1)
IGES	467	(1)
Step	468	(1)
Feature Recognition	469	(5)
Collaboration	474	(1)
Summary	475	(1)
Projects	475	(15)
Camera Casing	475	(13)
Camera Lens Housing	488	(2)
Review Questions	490	(1)
Engineering Drafting I	491	(80)
Overview	491	(1)
Engineering Drafting Concepts	492	(17)
Engineering Drawing Construction	492	(1)
Layout	492	(4)
Engineering Standards	496	(3)
Drawing Views	499	(7)
Manipulating Drawing Views	506	(3)
Engineering Drawing Views	509	(30)
Multiple Views for a Surface Model	509	(4)
Auxiliary View	513	(2)
Detail View	515	(3)
Broken View	518	(3)
Section View	521	(18)
Annotations	539	(29)
Centerlines	539	(2)
Text	541	(1)
Leader	542	(1)
Hole Note	543	(2)
Hole Chart	545	(3)
Dimensions	548	(5)
Tolerance	553	(13)
Surface Finish Symbol	566	(2)
Exports	568	(1)
Summary	569	(1)
Projects	569	(1)
Infant Scooter	569	(1)
Toy Car	569	(1)
Model Car Bodies	569	(1)
Camera Casing	569	(1)
Review Questions	570	(1)
Engineering Drafting II	571	(18)
Overview	571	(1)
Assembly Drawing Construction	571	(10)
Layout and Engineering Standard	572	(1)
Drawing Views	572	(4)
Hatch Pattern of Components in an Assembly	576	(5)
Annotation	581	(5)
Bill of Material	582	(3)
Balloon	585	(1)
Summary	586	(1)
Projects	586	(1)
Infant Scooter	586	(1)
Toy Car	586	(1)
Review Questions	587	(2)
Index	589