Epicyclic Mechanical Transmissions Based on Cams and Rollers

Spherical: to replace trains of bevel gears

• Pure Cam-Roller Type

Full Mechanism

Illustrations of transmission View Animation 1 (Play) View Animation 2 (Play) (Play with MediaPlayer7.01 or higher)

Internal Mechanism

• Combination of Cam-Roller and Spherical Stephenson Mechanisms

View animation of Stephenson mechanism

 

Planar: to replace trains of spur and helicoidal gears

Virtual Prototype of Planar Transmissions  (View animation)

Prototype assembled at CIM, McGill University View more pictures

 

Gearless Pitch-Roll Wrist 

Driven through spherical cam-roller pairs 2 DOFs 360 degree of pitch motion 360 degree of rolling motion Modular design

Preliminary performance tests --- Videos of the PRW: Pitch-only; Roll-only(high); Roll-only(low); Pitch-Roll; White Noise

 

An applications of planar transmissions: Dual-wheel transmission with epicyclic roller-cams

 

Selected Publications

1. Max A. Gonzalez-Palacios and Jorge Angeles, The Novel Design of  a Pure-Rolling Transmission to Covert Rotational into Translational Motion, Proceedings of DETC2000 (2000 ASME Design Engineering Technical Conferences), September 10-14, 2000, Baltimore, Maryland, USA (download   PostScript or PDF file)
2. Max A. Gonzalez-Palacios and Jorge Angeles, The Design of a Novel Pure-Rolling Transmission to Convert Rotational into Translational Motion, Journal of Mechanical Design,  Vol. 125, pp. 205-207, 2003 (download PDF file) 

Feature:

Featured in Eureka, January 1999