Gear Technology Manual

Module 5 - GEARBOX DESIGN

Now avalaible on CD-ROM

SYNOPSIS

The loads which the gears transmit to the gearcase are found, the strength and deflection of shafts and gearcase considered, and the various elements which are necessary to complete the design of the complete transmission are reviewed.

CONTENTS

The complete gearbox
The gearcase - overview of functional aspects
Detailed consideration of the various elements
Power and torques
Tooth forces in a gear pair
Forces on bearings
Illustrative example
Other forces influencing gearbox design
Connections to the gearbox
Inertia and gyroscopic forces
Bearing forces due to system transients
Shaft design
Mounting of gears on shafts
Features of gear mounting methods
Shaft strength and stiffness
Stress concentration factors
Detailed design of wheel and pinion
Shaft location - bearings and housings
Rolling contact bearings
Rolling bearing lubrication
Plain (hydrodynamic) bearings
Bearing housings
Interfaces to connected system components
Coupling to the attached machinery
Shaft seals
Casing design
Types of gearcase
Materials
Strength and stiffness
Simple model of gearcase - design to achieve adequate stiffness
Oil containment, gaskets
Provision for mounting,1ining up, lifting and assembly
Oil supply systems for gears and bearings
Choice of gear lubricant
Type of lubrication system
Splash or dip system
Spray lubrication and oil circulation systems
Oil filtration
Oil sprayers
Excess oil - a noise hazard
Cooling systems - overall and oil cooling
Cooling by natural convection and radiation
Assisted cooling
Thermal distortions
Maintenance provision
Condition monitoring
Laying on of hands
Temperature monitoring
Oil condition monitoring
Vibration monitoring
References

Index: - Gear Technology Manual
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