CAM Design and Manufacturing Handbook

CAM Design and Manufacturing Handbook

by Robert L. Norton
     
 

ISBN-10: 0831131225

ISBN-13: 9780831131227

Pub. Date: 01/28/2001

Publisher: Industrial Press, Inc.

The use of computers for engineering design, and in numerical control for manufacturing, has dramatically changed the cam design and manufacturing process. Additionally, cam design and manufacturing have been affected by a significant number of fundamental research results published in recent years. An invaluable resource, Cam Design and Manufacturing Handbook brings…  See more details below

Overview

The use of computers for engineering design, and in numerical control for manufacturing, has dramatically changed the cam design and manufacturing process. Additionally, cam design and manufacturing have been affected by a significant number of fundamental research results published in recent years. An invaluable resource, Cam Design and Manufacturing Handbook brings together up-to-date cam design technology, correct design and manufacturing procedures, and recent cam research results in one volume that is indispensable to the design and manufacturing of cam-follower systems. Beginning at an introductory level and progressing to more advanced topics, this comprehensive handbook provides all the information needed to properly design, model, analyze, specify, and manufacture cam-follower systems. This unique book is accompanied by a 90-day trial demonstration copy of the Professional Version of Dynacam for Windows V. 7.0. Written by the author and used worldwide, this program solves the equations described in the book and allows -- in its fully licensed version -- the design, dynamic modeling, analysis, and output of follower center, cam surface, and cutter coordinate data for any cam. It also defines conjugate cams for any application. Also included are 90-day trial demonstration copies of programs Fourbar, Sixbar, and Slider for the design of cam-follower linkages.

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Product Details

ISBN-13:
9780831131227
Publisher:
Industrial Press, Inc.
Publication date:
01/28/2001
Edition description:
Older Edition
Pages:
610
Product dimensions:
7.50(w) x 9.56(h) x 1.55(d)

Table of Contents

Chapter 1Introduction1
1.0Cam-Follower Systems1
1.1Fundamentals1
1.2Terminology4
1.3Applications9
1.4Timing Diagrams10
1.5Cam Design Software10
1.6Units10
1.7References16
Chapter 2Unacceptable Cam Curves17
2.0Introduction17
2.1S V A J Diagrams17
2.2Double-Dwell Cam Design--Choosing S V A J Functions19
2.3The Fundamental Law of Cam Design22
2.4Simple Harmonic Motion (SHM)22
2.5Constant Acceleration (Parabolic Displacement)25
2.6Cubic Displacement25
2.7Summary26
2.8References26
Chapter 3Double-Dwell Cam Curves27
3.0Introduction27
3.1Cycloidal Displacement for Double Dwells27
3.2Combined Functions for Double Dwells30
3.3The SCCA Family of Double-Dwell Functions41
3.4Polynomial Functions45
3.5Fourier Series Functions52
3.6Summary56
3.7References56
Chapter 4Single-Dwell Cam Curves57
4.0Introduction57
4.1Single-Dwell Cam Design--Choosing S V A J Functions57
4.2Single-Dwell Applications of Polynomials61
4.3Summary68
Chapter 5Spline Functions69
5.0Introduction69
5.1Classical Splines70
5.2General Polynomial Splines81
5.3B-splines86
5.4Bezier Curves97
5.5Knot Placement105
5.6Periodic Splines115
5.7Splines Other Than Polynomial Splines119
5.8Summary123
5.9Bibliography124
Chapter 6Critical Path Motion (CPM) Cam Curves127
6.0Introduction127
6.1Constant Velocity Motion127
6.2Combined Displacement and Velocity Constraints139
6.3Summary150
Chapter 7Cam Size Determination151
7.0Introduction151
7.1Pressure Angle--Radial Cam with Translating Roller Follower152
7.2Pressure Angle--Barrel Cam With Translating Roller Follower157
7.3Pressure Angle--Barrel Cam With Oscillating Roller Follower159
7.4Overturning Moment--Radial Cam With Translating Flat-Faced Follower161
7.5Pressure Angle--Radial Cam With Oscillating Roller Follower162
7.6Radius of Curvature--Radial Cam With Translating Roller Follower165
7.7Radius of Curvature--Radial Cam With Translating Flat-Faced Follower169
7.8Radius of Curvature--Barrel Cam With Translating Roller Follower173
7.9Radius of Curvature--Barrel Cam With Oscillating Roller Follower173
7.10Radius of Curvature--Radial Cam With Oscillating Roller Follower174
7.11Radius of Curvature--Radial Cam With Oscillating Flat-Faced Follower174
7.12References176
Chapter 8Dynamics of Cam Systems--Modeling Fundamentals177
8.0Introduction177
8.1Newton's Laws of Motion177
8.2Dynamic Models178
8.3Mass178
8.4Mass Moment and Center of Gravity179
8.5Mass Moment of Inertia (Second Moment of Mass)181
8.6Parallel Axis Theorem (Transfer Theorem)182
8.7Radius of Gyration183
8.8Modeling Rotating Links184
8.9Lumped Parameter Dynamic Models185
8.10Equivalent Systems188
8.11Modeling Nonlinear Springs197
8.12Modeling an Industrial Cam-Follower System206
8.13References212
Chapter 9Dynamics of Cam Systems--Force, Torque, Vibration213
9.0Introduction213
9.1Dynamic Force Analysis of the Force-Closed Cam-Follower213
9.2Resonance224
9.3Estimating Damping227
9.4Kinetostatic Force Analysis of the Force-Closed Cam-Follower233
9.5Kinetostatic Force Analysis of the Form-Closed Cam-Follower238
9.6Kinetostatic Camshaft Torque241
9.7Controlling Cam Speed--Motors246
9.8Controlling Cam Speed--Flywheels251
9.9Torque Compensation Cams258
9.10References262
Chapter 10Modeling Cam-Follower Systems263
10.0Introduction263
10.1Degrees of Freedom264
10.2Single-Mass SDOF Linear Dynamic Models265
10.3Two-Mass, One- or Two-DOF, Nonlinear Dynamic Model of a Valve Train269
10.4Multi-DOF Dynamic Model of a Valve Train272
10.5One-Mass Model of an Industrial Cam-Follower System273
10.6Two-Mass Model of an Industrial Cam-Follower System279
10.7Solving System Differential Equations282
10.8Polydyne Cam Functions291
10.9Splinedyne Cam Functions307
10.10References312
Chapter 11Residual Vibrations in Cam-Follower Systems315
11.0Introduction315
11.1Residual Vibration315
11.2Residual Vibration of Double-Dwell Functions316
11.3Double-Dwell Functions for Low Residual Vibration319
11.4References333
Chapter 12Failure of Cam Systems--Stress, Wear, Corrosion335
12.0Introduction335
12.1Surface Geometry337
12.2Mating Surfaces338
12.3Adhesive Wear340
12.4Abrasive Wear342
12.5Corrosion Wear342
12.6Stress345
12.7Strain347
12.8Principal Stresses347
12.9Plane Stress and Plane Strain350
12.10Applied Versus Principal Stresses351
12.11Surface Fatigue352
12.12Spherical Contact354
12.13Cylindrical Contact358
12.14General Contact363
12.15Dynamic Contact Stresses368
12.16Surface Fatigue Failure Models--Dynamic Contact376
12.17Surface Fatigue Strength379
12.18Roller Followers386
12.19Failure of Rolling-Element bearings387
12.20Selection of Rolling-Element Bearings388
12.21References391
Chapter 13Cam Profile Determination393
13.0Introduction393
13.1Radial Cams With Roller Followers395
13.2Radial Cams With Flat-Faced Followers402
13.3Barrel Cams With Roller Followers407
13.4Linear Cams With Roller Followers412
13.5Conjugate Cams413
13.6Cam-Linkage Combinations419
13.7Shifting the Cam Contour to Machine Zero421
13.8References422
Chapter 14Cam Materials and Manufacturing423
14.0Introduction423
14.1Cam Materials424
14.2Hardness428
14.3Heat Treatment429
14.4Cam Manufacturing Methods432
14.5Cutting the Cam440
14.6Manufacturing Methods447
14.7Surface Coatings448
14.8Measuring the Cam449
14.9References449
14.10Bibliography450
Chapter 15Lubrication of Cam Systems451
15.0Introduction451
15.1Lubricants453
15.2Viscosity454
15.3Types of Lubrication455
15.4Material Combinations in Cam-Follower Joints460
15.5Hydrodynamic Lubrication Theory461
15.6Nonconforming Contacts465
15.7Cam Lubrication472
15.8References473
Chapter 16Measuring Cam-Follower Performance475
16.0Introduction475
16.1Transducers475
16.2Experimental Cam-Follower Measurements483
16.3Data Analysis484
16.4References498
16.5Bibliography498
Chapter 17Case Studies499
17.0Introduction499
17.1Analyzing Vibrations in an IC Engine Valve Train499
17.2Analyzing Vibrations in Cam-Driven Automated Assembly Machinery511
17.3References520
Chapter 18Cam Design Guidelines521
18.0Introduction521
18.1Practical Design Considerations521
18.2Rules of Thumb for Cam Design530
18.3References532
Appendix AComputer Programs533
A.0Introduction533
A.1General information533
A.2General Program Operation534
A.3Program Dynacam541
A.4Program Fourbar554
A.5Program Sixbar562
A.6Program Slider565
Appendix BMaterial Properties569
Appendix CGeometric Properties573
Appendix DSpring Data575
Bibliography579
Glossary of Terms599
Index601
Index to CD-ROM609
Installation Instructions for CD-ROM610

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