A Novel Harmonic Drive With Pure Involute Tooth Gear Pair

[+] Author and Article Information
Rathindranath Maiti

Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur-721 302, India Phone: ++91 3222, 282938 Fax: ++91 3222 282278/255303,e-mail: rmaiti@mech.iitkgp.ernet.in

J. Mech. Des 126(1), 178-182 (Mar 11, 2004) (5 pages) doi:10.1115/1.1637659 History: Received June 01, 2001; Online March 11, 2004
Copyright © 2004 by ASME
Topics: Waves , Gears , Generators
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Diamond,  A., 1991, “Harmonic Drive Gearing Revisited,” Motion, May/June pp. 11–15.
Fisher,  A., 1961, “Some Design Characteristics of the Internal Gear Pairs,” Machinery, 99, Aug. 2, pp. 270–275.
Maiti,  R., and Roy,  A. K., 1996, “Minimum Tooth Difference in Internal-External Involute Gear Pair,” Mech. Mach. Theory, 31(4), pp. 475–484.
Kiyosawa, Y., Sasahara, M., and Ishikawa, S., 1989, “Performance of a Strain Wave Gearing using a new Tooth Profile,” Proceedings, ASME International Power Transmission and Gearing Conference, 11 , pp. 607–612.
Kondo,  K., and Takada,  J., 1990, “Study on Tooth Profiles of the Harmonic Drive,” ASME J. Mech. Des., 112, pp. 131–137.
Maiti, R., 1995, “An Improved Drive System such as a Two Gear Epicyclic Drive similar to Harmonic Drive System,” Indian Patent No. 186322 of 25.10.1995.
Loney, S. L., 1962, “The Elements of Coordinate Geometry, Part I,” Macmillan.
Roy, A. K., 1993, “Studies on ‘Tooth Tip interference’ in Involute Gearing with Specific Reference to its Application in Harmonic Drive,” Master’s thesis, Mechanical Engineering Department, IIT, Kharagpur, India.
Maiti, R. and Roy, A. K., 2000, “A Wave Generator of New Concept for Flexgear of Harmonic Drive with Pure Involute Tooth Gear Pairs (PTG-14458),” Proceedings of the 8th International Power Transmission and Gearing Conference, ASME DETC 2000, Sept. 10–13, 2000, Baltimore, Maryland, USA.


Grahic Jump Location
Geometry to verify tip interference (with proposed Wave Generator Cam)
Grahic Jump Location
The Photographic view of a commercial Harmonic Drive (The wave generator cam is elliptical) (Source: A leaflet)
Grahic Jump Location
The motion of a Harmonic Drive (The wave generator cam is elliptical) (Source: Ref- 1)
Grahic Jump Location
Geometry of the proposed wave generator cam
Grahic Jump Location
Photographic view of the physical model of the New Harmonic Drive




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