Gears Design

Gears Design
اسم المؤلف
غير معروف
التاريخ
7 ديسمبر 2019
المشاهدات
339
التقييم
(لا توجد تقييمات)
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Gears Design
Table of Contents
1.0 Introduction
2.0 Basic Geometry of Spur Gears
2.1 Basic Spur Gear Geometry
2.2 the Law of Gearing
2.3 the Involute Curve
2.4 Pitch Circles
2.5 Pitch
2.5.1 Circular Pitch
2.5.2 Diametral Pitch
2.5.3 Relation of Pitches
3.0 Gear Tooth Forms and Standards
3.1 Preferred Pitches
3.2 Design Tables
3.3 Agma Standards
4.0 Involutometry
4.1.1 Gear Nomenclature
4.1.2 Symbols
4.2 Pitch Diameter and Center Distance
4.3 Velocity Ratio
4.4 Pressure Angle
4.5 Tooth Thickness
4.6 Measurement Over-pins
4.7 Contact Ratio
4.8 Undercutting
4.9 Enlarged Pinions
4.10 Backlash Calculation
4.11 Summary of Gear Mesh Fundamentals
5.0 Helical Gears
5.1 Generation of the Helical Tooth
5.2 Fundamental of Helical Teeth
5.3 Helical Gear Relationships
5.4 Equivalent Spur Gear
5.5 Pressure Angle
5.6 Importance of Normal Plane Geometry
5.7 Helical Tooth Proportions
5.8 Parallel Shaft Helical Gear Meshes
5.8.1 Helix Angle
5.8.2 Pitch Diameter
5.8.3 Center Distance
5.8.4 Contact Ratio
5.8.5 Involute Interference
5.9 Crossed Helical Gear Meshes
5.9.1 Helix Angle and Hands
5.9.2 Pitch
5.9.3 Center Distance
5.9.4 Velocity Ratio
5.10 Axial Thrust of Helical Gears
6.0 Racks
7.0 Internal Gears
7.1 Development of the Internal Gear
7.2 Tooth Parts of Internal Gear
7.3 Tooth Thickness Measurement
7.4 Features of Internal Gears
8.0 Worm Mesh
8.1 Worm Mesh Geometry
8.2 Worm Tooth Proportions
8.3 Number of Threads
8.4 Worm and Wormgear Calculations
8.4.1 Pitch Diameters, Lead and Lead Angle
8.4.2 Center Distance of Mesh
8.5 Velocity Ratio
9.0 Bevel Gearing
9.1 Development and Geometry of Bevel Gears
9.2 Bevel Gear Tooth Proportions
9.3 Velocity Ratio
9.4 Forms of Bevel Teeth
10.0 Gear Type Evaluation
11.0 Criteria of Gear Quality
11.1 Basic Gear Formats
11.2 Tooth Thickness and Backlash
11.3 Position Error (or Transmission Error)
11.4 Agma Quality Classes
11.5 Comparison With Previous Agma and International Standards
12.0 Calculation of Gear Performance Criteria
12.1 Backlash in a Single Mesh
12.2 Transmission Error
12.3 Integrated Position Error
12.4 Control of Backlash
12.5 Control of Transmission Error
13.0 Gear Strength and Durability
13.1 Bending Tooth Strength
13.2 Dynamic Strength
13.3 Surface Durability
13.4 Agma Strength and Durability Ratings
Catalog D190
14.1 Ferrous Metals
14.1.1 Cast Iron
14.1.2 Steel
14.2 Non Ferrous Metals
14.2.1 Aluminum
14.2.2 Bronzes
14.3 Die Cast Alloys
14.4 Sintered Powder Metal
14.5 Plastics
14.6 Applications and General Comments
15.0 Finish Coatings
15.1 Anodize
15.2 Chromate Coatings
15.3 Passivation
15.4 Platings
15.5 Special Coatings
15.6 Application of Coatings
16.0 Lubrication
16.1 Lubrication of Power Gears
16.2 Lubrication of Instrument Gears
16.3 Oil Lubricants
16.4 Grease
16.5 Solid Lubricants
16.6 Typical Lubricants
17.0 Gear Fabrication
17.1 Generation of Gear Teeth
17.1.1 Rack Generation
17.1.2 Hob Generation
17.1.3 Gear Shaper Generation
17.1.4 Top Generating
17.2 Gear Grinding
17.3 Plastic Gears
18.0 Gear Inspection
18.1 Variable-center-distance Testers
18.1.1 Total Composite Error
18.1.2 Gear Size
18.1.3 Advantages and Limitations of Variable-center-distance Testers…
18.2 Over-pins Gaging
18.3 Other Inspection Equipment
18.4 Inspection of Fine-pitch Gears
18.5 Significance of Inspection and Its Implementation
19.0 Gears, Metric
19.1 Basic Definitions
19.2 Metric Design Equations
19.3 Metric Tooth Standards
19.4 Use of Strength Formulas
19.5 Metric Gear Standards
19.5.1 Usa Metric Gear Standards
19.5.2 Foreign Metric Gear Standards
20.0 Design of Plastic Molded Gears
20.1 General Characteristics of Plastic Gears
20.2 Properties of Plastic Gear Materials
20.3 Pressure Angles
20.4 Diametral Pitch
20.5 Design Equations for Plastic Spur, Bevel, Helical and Worm Gears
20.5.1 General Considerations
20.5.2 Bending Stress – Spur Gears
20.5.3 Surface Durability for Spur and Helical Gears
20.5.4 Design Procedure – Spur Gears
20.5.5 Design Procedure Helical Gears
20.5.6 Design Procedure – Bevel Gears
20.5.7 Design Procedure – Worm Gears
20.6 Operating Temperature
20.7 Eftect of Part Shrinkage on Gear Design
20.8 Design Specifications
20.9 Backlash
20.10 Environment and Tolerances
20.11 Avoiding Stress Concentration
20.12 Metal Inserts
20.13 Attachment of Plastic Gears to Shafts
20.14 Lubrication
20.15 Inspection
20.16 Molded Vs Cut Plastic Gears
20.17 Elimination of Gear Noise
20.18 Mold Construction
20.19 Conclusion
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