Autocad Mechanical 2000 - Tutorials - Design & Manufacturing

225 Pages·1999·2.19 MB·English

0
0
Tutorials
0
2

l
a
c
i
n
a
h
c
e
M

(cid:226)
D
A
C
O
T
U
A
17320-010000-5080 June 28, 1999
This is a blank page
Copyright © 1999 Autodesk, Inc.
All Rights Reserved
This publication, or parts thereof, may not be reproduced in any form, by any method, for any purpose.
AUTODESK, INC. MAKES NO WARRANTY, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,
REGARDING THESE MATERIALS AND MAKES SUCH MATERIALS AVAILABLE SOLELY ON AN “AS-IS” BASIS.
IN NO EVENT SHALL AUTODESK, INC. BE LIABLE TO ANYONE FOR SPECIAL, COLLATERAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH OR ARISING OUT OF PURCHASE OR USE OF THESE
MATERIALS. THE SOLE AND EXCLUSIVE LIABILITY TO AUTODESK, INC., REGARDLESS OF THE FORM OF
ACTION, SHALL NOT EXCEED THE PURCHASE PRICE OF THE MATERIALS DESCRIBED HEREIN.
Autodesk, Inc. reserves the right to revise and improve its products as it sees fit. This publication describes the state of
this product at the time of its publication, and may not reflect the product at all times in the future.
Autodesk Trademarks
The following are registered trademarks of Autodesk, Inc., in the USA and/or other countries: 3D Plan, 3D Props, 3D
Studio, 3D Studio MAX, 3D Studio VIZ, 3DSurfer, ADE, ADI, Advanced Modeling Extension, AEC Authority (logo), AEC-
X, AME, Animator Pro, Animator Studio, ATC, AUGI, AutoCAD, AutoCAD Data Extension, AutoCAD Development
System, AutoCAD LT, AutoCAD Map, Autodesk, Autodesk (logo), Autodesk Animator, Autodesk MapGuide, Autodesk
University, Autodesk View, Autodesk WalkThrough, Autodesk World, AutoLISP, AutoShade, AutoSketch, AutoSolid,
AutoSurf, AutoVision, Biped, bringing information down to earth, CAD Overlay, Character Studio, Design Companion,
Drafix, Education by Design, Generic, Generic 3D Drafting, Generic CADD, Generic Software, Geodyssey, Heidi,
HOOPS, Hyperwire, Inside Track, Kinetix, MaterialSpec, Mechanical Desktop, Multimedia Explorer, NAAUG, Office
Series, Opus, PeopleTracker, Physique, Planix, RadioRay, Rastation, Softdesk, Softdesk (logo), Solution 3000, Tech
Talk, Texture Universe, The AEC Authority, The Auto Architect, TinkerTech, VISION*, WHIP!, WHIP! (logo),
Woodbourne, WorkCenter, and World-Creating Toolkit.
The following are trademarks of Autodesk, Inc., in the USA and/or other countries: 3D on the PC, ACAD, ActiveShapes,
Actrix, Advanced User Interface, AEC Office, AME Link, Animation Partner, Animation Player, Animation Pro Player, A
Studio in Every Computer, ATLAST, Auto-Architect, AutoCAD Architectural Desktop, AutoCAD Architectural Desktop
Learning Assistance, AutoCAD Learning Assistance, AutoCAD LT Learning Assistance, AutoCAD Simulator, AutoCAD
SQL Extension, AutoCAD SQL Interface, Autodesk Animator Clips, Autodesk Animator Theatre, Autodesk Device
Interface, Autodesk Inventor, Autodesk PhotoEDIT, Autodesk Software Developer’s Kit, Autodesk View DwgX, AutoFlix,
AutoPAD, AutoSnap, AutoTrack, Built with ObjectARX (logo), ClearScale, Concept Studio, Content Explorer,
cornerStone Toolkit, Design 2000 (logo), DesignCenter, Design Doctor, Designer’s Toolkit, DesignProf, DesignServer,
Design Your World, Design Your World (logo), Discreet, DWG Linking, DWG Unplugged, DXF, Extending the Design
Team, FLI, FLIC, GDX Driver, Generic3D, Heads-up Design, Home Series, Kinetix (logo), Lightscape, ObjectARX,
ObjectDBX, Ooga-Chaka, Photo Landscape, Photoscape, Plugs and Sockets, PolarSnap, Powered with Autodesk
Technology, Powered with Autodesk Technology (logo), ProjectPoint, Pro Landscape, QuickCAD, SchoolBox,
SketchTools, Suddenly Everything Clicks, Supportdesk, The Dancing Baby (name), The Dancing Baby (image),
Transform Ideas Into Reality, Visual LISP, Visual Syllabus, Volo, and Where Design Connects.
Third Party Software Credits
ACIS ® Copyright © 1994, 1997, 1999 Spatial Technology, Inc., Three-Space Ltd., and Applied Geometry Corp. All
rights reserved.
Portions Copyright © 1991-1996 Arthur D. Applegate. All rights reserved.
Typefaces from the Bitstream ® typeface library copyright 1992.
Cypress Enable™, Cypress Software, Inc.
dBASE is a registered trademark of Ksoft, Inc.
Portions licensed from D-Cubed Ltd. DCM-2D is a trademark of D-Cubed Ltd. DCM-2D Copyright D-Cubed Ltd. 1989-
1998
The license management portion of this product is based on Élan License Manager © 1989, 1990, 1998 Élan Computer
Group, Inc. All rights reserved.
Genius is a trademark of Genius CAD Software GmbH and CoKG licensed to Autodesk, Inc., for limited use in
connection with: Genius™14, Genius™ LT, Genius™ Desktop, Genius™ Mold, Genius™ Motion, Genius™ Pool,
Genius™ Profile, Genius™ SAP, Genius™ TNT, Genius™ Vario.
Portions of this software are based on the work of the Independent JPEG Group.
InstallShield™ 3.0. Copyright © 1997 InstallShield Software Corporation. All rights reserved.
International CorrectSpell™ Spelling Correction System © 1995 by Lernout & Hauspie Speech Products, N.V. All rights
reserved.
LUCA TCP/IP Package, Portions Copyright © 1997 Langener GmbH. All rights reserved.
Copyright © 1997 Microsoft Corporation. All rights reserved.
Objective Grid ©, Stingray Software a division of Rogue Wave Software, Inc.
Typefaces from Payne Loving Trust © 1996. All rights reserved.
PKWARE Data Compression Library ©, PKWARE, Inc.
Spread © 1996, Far Point Technologies, Inc.
All other brand names, product names or trademarks belong to their respective holders.
GOVERNMENT USE
Use, duplication, or disclosure by the U. S. Government is subject to restrictions as set forth in FAR 12.212 (Commercial
Computer Software-Restricted Rights) and DFAR 227.7202 (Rights in Technical Data and Computer Software), as
applicable.
Content
Introduction......................................................................................................1
Prerequisites...........................................................................................................2
How the Tutorials Are Organized..........................................................................2
Methods for Accessing AutoCAD Mechanical Commands..................................2
Styles for Different Input Actions.........................................................................3
Chapter 1: Working with Templates...............................................................5
Key Terms..............................................................................................................6
Working with Templates.......................................................................................7
Getting Started...................................................................................................7
Setting Up the Starting Layer.............................................................................8
Setting the Mechanical Options........................................................................9
Specifying the Drawing Limits.........................................................................10
Saving a Template............................................................................................10
Using a Template.............................................................................................11
Chapter 2: Extending the Design of a Lever.................................................13
Key Terms............................................................................................................14
Extending the Design..........................................................................................15
Getting Started.................................................................................................15
Preliminary Settings: Snap Configuration.......................................................16
Creating Construction Lines (C-Lines)............................................................17
Creating additional C-Lines.............................................................................19
Creating a Contour and Applying a Fillet.......................................................22
Creating a Contour and Trimming Projecting Edges......................................24
Cross-Hatching the Lever.................................................................................26
Dimensioning the Lever..................................................................................27
Creating a Detail and Additional Dimensions................................................29
Chapter 3: Dimensioning and Annotations..................................................33
Key Terms............................................................................................................34
Dimensioning......................................................................................................36
Automatic Dimensioning................................................................................36
Editing Dimensions with Power Commands..................................................39
Inserting Annotations......................................................................................43
Inserting a Drawing Border..............................................................................46
|
Contents v
Chapter 4: Working with Layers and Layer Groups.....................................49
Key Terms............................................................................................................50
Working with Layers and Layer Groups.............................................................51
Understanding Layer Management.................................................................51
Getting Started.................................................................................................51
Changing a Layer By Selecting Objects...........................................................52
Creating Layer Groups.....................................................................................53
Using a Layer Group to Copy Objects.............................................................58
Chapter 5: Working with a Bill of Material and a Parts List.......................61
Key Terms............................................................................................................62
Inserting a Part Reference................................................................................63
Placing Balloons...............................................................................................66
Creating a Parts List.........................................................................................71
Merging and Splitting Items in a Parts List.....................................................75
Collecting Balloons..........................................................................................77
Sorting and Renumbering Items on a Parts List..............................................79
Using Filters......................................................................................................81
Chapter 6: Working with Model Space and Layouts....................................85
Key Terms............................................................................................................86
Working with Model Space and Layouts............................................................87
Getting Started.................................................................................................87
Creating a Scale Area........................................................................................88
Creating a Detail..............................................................................................90
Generating a New Viewport.............................................................................91
Inserting an User Through Hole......................................................................93
Creating a Subassembly in a New Layout........................................................97
Chapter 7: Designing a Cam........................................................................103
Key Terms..........................................................................................................104
Cam Design.......................................................................................................105
Getting Started...............................................................................................105
Configuring the Cam Plate Calculations.......................................................106
Creating Movement Sections.........................................................................108
Creating Velocity and Acceleration Curves...................................................110
Creating Cam Geometry from the Graph.....................................................111
Creating NC Data...........................................................................................112
|
vi Contents
Chapter 8: Calculating Moment of Inertia and Deflection Line...............115
Key Terms..........................................................................................................116
Calculating Moment of Inertia and Deflection Line..........................................117
Getting Started...............................................................................................117
Calculating the Moment of Inertia................................................................118
Calculating the Deflection Line.....................................................................119
Chapter 9: Creating a Shaft With Standard Parts.......................................125
Key Terms..........................................................................................................126
Creating a Shaft with Standard Parts................................................................127
Configuring the Snap Options......................................................................127
Starting and Configuring the Shaft Generator..............................................127
Creating Cylindrical Shaft Sections and Gears..............................................129
Inserting a Spline Profile................................................................................130
Inserting a Chamfer and a Fillet....................................................................131
Inserting a Shaft Break...................................................................................132
Creating a Side View of the Shaft..................................................................133
Inserting a Thread..........................................................................................134
Editing and Inserting a Shaft Section............................................................134
Replacing a Shaft Section...............................................................................136
Inserting a Bearing.........................................................................................137
Chapter 10: Performing a Shaft Calculation...............................................139
Key Terms..........................................................................................................140
Performing a Shaft Calculation.........................................................................141
Getting Started...............................................................................................141
Creating the Contour of a Shaft....................................................................142
Specifying the Material..................................................................................143
Placing the Supports......................................................................................143
Specifying the Loads......................................................................................144
Calculating the Shaft and Inserting the Results............................................147
Chapter 11: Working with Standard Parts..................................................149
Key Terms..........................................................................................................150
Working with Standard Parts............................................................................151
Getting Started...............................................................................................151
Inserting a Screw Connection........................................................................152
Copying a Screw Connection with Power Copy...........................................157
Using Power Recall and Performing a Screw Calculation.............................158
Editing a Screw Connection with Power Edit................................................164
Working with Power View.............................................................................166
Deleting with Power Erase.............................................................................168
|
Contents vii
Inserting a Hole..............................................................................................169
Inserting a Pin................................................................................................171
Hiding C-Lines...............................................................................................172
Simplifying the Representation of Standard Parts.........................................173
Chapter 12: Chain Calculation....................................................................175
Key Terms..........................................................................................................176
Chain Calculation.............................................................................................177
Getting Started...............................................................................................177
Performing a Length Calculation..................................................................178
Optimizing the Chain Length.......................................................................180
Inserting Sprockets.........................................................................................181
Inserting a Chain...........................................................................................184
Chapter 13: Calculating a Spring................................................................187
Key Terms..........................................................................................................188
Calculating a Spring..........................................................................................189
Getting Started...............................................................................................189
Starting the Spring Calculation.....................................................................190
Specifying the Spring Layout.........................................................................192
Calculating and Selecting the Spring.............................................................196
Inserting the Spring.......................................................................................196
Copying the Spring with Power Copy...........................................................197
Editing the Spring with Power Edit...............................................................198
Chapter 14: Using FEA to Calculate Stress..................................................201
Key Terms..........................................................................................................202
2D FEA...............................................................................................................203
Getting Started...............................................................................................203
Calculating the Stress in a Lever....................................................................203
Defining Loads and Supports.........................................................................205
Calculating the Results..................................................................................207
Evaluating and Refining the Mesh................................................................208
Improving the Design....................................................................................210
Recalculating the Stress..................................................................................211
|
viii Contents
Introduction
In This Chapter
Learning how to use AutoCAD Mechanical (cid:132) Prerequisites
2000 for all your mechanical design needs is (cid:132) How the tutorials are
organized
exciting. This book contains a series of tutorials
(cid:132) Methods for accessing
to teach you how to use AutoCAD Mechanical AutoCAD Mechanical
2000 commands
2000. The tutorials provide a comprehensive
(cid:132) Styles for different input
overview of the mechanical design process as actions
well.
Drawing files have been included with the
program specifically for the tutorials. These
drawing files provide the initial state for
starting the tutorial exercises.
1
Prerequisites
Installing AutoCAD Mechanical 2000 with typical or full
installation, the tutorial drawings will automatically be installed.
Selecting the compact installation, the tutorial drawings will not be
installed.
If you select the custom installation, be sure that you have selected
the online help files to install the tutorial drawings as well.
Because of the fact that the tutorial is completely based on ISO
standard, please be sure to have the ISO standards selected during
installation. If you have already installed AutoCAD Mechanical
2000 without the ISO standard part standard, please install the
ISO standard part standard now.
How the Tutorials Are Organized
The tutorials are organized so that each of the tutorial exercises
deals with a special function or group of function in
AutoCAD Mechanical 2000.
The tutorial exercises 9 to 14 deal with AutoCAD Mechanical 2000
Power Pack functions and can only be worked through if you have
installed the Power Pack.
At the beginning of each tutorial, there is a list of Key Terms. These
terms contain pertinent mechanical design terminology and
definitions. Understanding the terms before you begin the lessons
will help you in the tutorials.
Methods for Accessing AutoCAD
Mechanical Commands
AutoCAD Mechanical 2000 provides several methods for accessing
the commands. You can choose the method you prefer. In the
tutorial, all the methods are included in the step-by-step
procedures. You decide which method to use. Here is an example
of a step that includes the command access options:
|
2 Introduction