Gear Technical Reference – The Role Gears are Playing
Gears are used in various types of machinery as a transmission component.
The reasons why gears are so widely used to this day can best be described by these facts :
- Gears range in size from miniature instrument installations, such as watches, to large, powerful gears used in turbine drives for ocean liners
- Gears offer positive transmission of power
- Transmission ratio can be freely controlled with high accuracy by changing the number of gear teeth
- By increasing or decreasing the number of paired gears, enables you to adjust position transmission with very high angular or linear accuracy
- Gears can couple power and motion between shafts whose axis are parallel, intersecting or skew
This technical reference provides the fundamentals of both theoretical and practical information.
When you select KHK products for your applications, please make use of the KHK catalog and this technical reference.
Table of Contents
- Gear Types and Terminology 1.1 Type of Gears
- Gear Trains 2.1 Single – Stage Gear Train
- Involute Gear Profile 3.1 Module Sizes and Standards
- Calculation of Gear Dimensions 4.1 Spur Gears
- Tooth Thickness 5.1 Chordal Tooth Thickness Measurement
- Gear Backlash 6.1 Definition of Backlash
- Accuracy of Gears 7.1 Accuracy of Spur and Helical Gears
- Mounting Accuracy of Gears 8.1 Accuracy of Center Distance
- Gear Materials 9.1 Types of Gear Materials
- Gear Strength and Gear Durability 10.1 Bending Strength of Spur and Helical Gears
- Design of Plastic Gears 11.1 The Properties of Nylon and Duracon
- Gear Forces 12.1 Forces in a Parallel Axes Gear Mesh
- Lubrication of Gears 13.1 Methods of Lubrication
- Damage to Gears 14.1 Gear Wear and Tooth Surface Fatigue
- How to reduce Gear Noise
- Determining the Specifications of Gears 16.1 A Method for Determining the Specifications of a Spur Gear
- Gear Systems 17.1 Planetary Gear System
1.2 Symbols and Terminology
2.2 Two – Stage Gear Train
3.2 The Involute Curve
3.3 Meshing of Involute Gear
3.4 The Generating of a Spur Gear
3.5 Undercutting
3.6 Profile Shifting
3.7 Gear Tooth Modifications
4.2 Internal Gears
4.3 Helical Gears
4.4 Bevel Gears
4.5 Screw Gears
4.6 Cylindrical Worm Gear Pair
5.2 Span Measurement of Teeth
5.3 Measurement Over Rollers
6.2 Backlash Relationship
6.3 Tooth Thickness and Backlash
6.4 Gear Train and Backlash
6.5 Methods of Reducing Backlash
7.2 Accuracy of Bevel Gears
8.2 Axial Parallelism
8.3 Features of Tooth Contact
9.2 Heat Treatments
10.2 Surface Durability of Spur and Helical Gears
10.3 Bending Strength of Bevel Gears
10.4 Surface Durability of Bevel Gears
10.5 Surface Durability of Worm Gear
11.2 Strength of Plastic Gears
12.2 Forces in an Intersecting Axes Gear Mesh
12.3 Forces in a Nonparallel and Nonintersecting Axes Gear Mesh
13.2 Gear Lubricants
14.2 Gear Breakage
14.3 Types of Damage and Breakage
16.2 A Method for Determining the Specifications of a Helical Gear
17.2 Hypocycloid Mechanism
17.3 Constrained Gear System
Special contents for website
Anti-backlash Gears - A detailed description of Anti-backlash GearsGear Design - A detailed description of Gear Design
Gear Pump - A detailed description of Gear Pump
Related links :
齿轮技术资料
The ABC’s of Gears / Basic Guide – B
Introduction to Gears
Spur Gears - A detailed description of Spur Gears