Basics of calculation and design of planetary gears
Operating behavior, calculation, essential aspects for design
Introduction
Planetary gear units are used in a wide variety of designs and applications: from small actuators to the high-torque industrial and wind power sectors. Multiple planetary sets in power shift transmission systems (cars, trucks, trains, etc.) are used to harness their degrees of freedom in operation.
However, to fully capitalize on the great potential of planetary gears, it is essential to observe fundamental interrelationships and avoid design errors. That is precisely the aim of this seminar.
Target Audience
Gearbox developers, designers, and calculation engineers
Objectives
The goal of this seminar is to convey elementary relationships in planetary gears for the operating behavior as well as for design/calculation and construction.
It is focused on the most common design, consisting of a sun, planets, and ring gear. The knowledge gained can largely be applied to other designs.
Contents
Seminar day 1: operating behavior
- Designs and gear ratios
- Torque, speed, and power flow
- Forces and load distribution
- Interference and load-balancing displacements
Seminar day 2: design and calculation
- Design conditions (with regard to the number of teeth)
- Variants for planetary bearings
- Special features of bearing calculation
- Calculation of the load distribution
- Measures for optimizing the load distribution
- Special features of gear modifications
Instructors
Dr.-Ing. Christian Wirth, Head of Transmission Engineering