Planetary Gear Wheel Train
- Title:
- Planetary Gear Wheel Train
- Title (German):
- Rückkehrendes Stirnräderwerk mit 1 Hohlrad
- Collection:
- Reuleaux Kinematic Mechanisms Collection
- Set:
- G. Simple Gear Trains
- Designer:
- Reuleaux, F. (Franz), 1829-1905
- Manufacturer:
- Gustav Voigt Werkstatt
- Date:
- 1882
- Country:
- Germany
- Voigt Catalog Model:
- G2
- File Name:
- G02.jpg
- Work Type:
- Mechanical model
- Materials/Techniques:
- cast iron and brass on wood pedestal
- Subject:
- gear, planetary gears
Kinematics of Machinery - Measurement:
- 200 x 89 (millimeters, width x depth)
200 x 121 x 221 (millimeters, width x depth x height) - Description:
- This set of models illustrates variations of planet-sun gear mechanisms. These kinematic chains consist of an inner or 'sun' gear, an outer or 'ring' gear and an intermediate gear called the 'planet.' The models G2, G3, G4, G5, G6 all have elements of such planetary gear trains. Reuleaux calls them 'Stirnräderwerk' in German. Planetary gears have several natural inversions by grounding or fixing either the sun, ring, or planet gears. There is also a link between the axel of the sun and planet and this can also be grounded. Reuleaux designed several of these models so that they could be demounted and different elements fixed such that one model could demonstrate several different inversions of the same planetary gear kinematic chain. Planetary gear mechanisms have been used in modern automatic transmission systems of automobiles. They are also used in speed reduction mechanisms in servo motors used in modern robotics and control actuated machines. One Swiss company makes servo motor planetary-gear speed reducers as small as 10 mm in diameter. [Francis Moon 2004-11-04]
The 220 models in Cornell University’s Reuleaux Collection were built in the late 19th century to demonstrate the elements of machine motion, as theorized by the German engineer Franz Reuleaux. The University acquired the models in 1882 for use in teaching and research. The Reuleaux models are classified according to the alphanumeric schema employed in the catalog of the manufacturer, Gustav Voigt. The letter in a model's ID (e.g., B14 or S35) refers to a class of mechanism; the number is a specific instance of the class. This classification scheme is a simplified version of the taxonomy of machine elements elaborated in Reuleaux's work. - Repository:
- Sibley School of Mechanical and Aerospace Engineering, Cornell University
- Format:
- Image
- Rights:
- Photography credit: Jon Reis (www.jonreis.com). Jon Reis Photography grants Cornell University Libraries and the Cornell College of Engineering the rights to display copyrighted images of the Reuleux collection of kinetic machines on the Cornell University and National Science Digital Library web sites and for unlimited use in Cornell University Library publications for education purposes only. Rights for all other uses, including but not limited to, editorial, commercial, advertising, web use and display by third parties not affiliated with Cornell University are reserved by the photographer. The written permission of any copyright and other rights holders is required for distribution, reproduction, or other use that extends beyond what is authorized by fair use and other statutory exemptions. Responsibility for making an independent legal assessment of an item and securing any necessary permissions ultimately rests with persons desiring to use the item. For questions about this item or other items please contact the Physical Sciences Librarians at pslref@cornell.edu.