B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
294/9
B66C 23/00 (2006.01) B25J 9/10 (2006.01) B25J 9/12 (2006.01) B25J 17/02 (2006.01)
Patent
CA 1244855
TITLE OF THE INVENTION "ROBOT ARM DRIVE APPARATUS OF INDUSTRIAL ROBOT" ABSTRACT OF THE DISCLOSURE A robot arm drive apparatus of an industrial robot comprising: an electric motor having a drive shaft; a first robot member having the electric motor mounted thereon; a second robot member rotatably supported on the first robot member; and reduction gear means for reducing rotation of the electric motor and then transmitting to the second robot member. The reduction gear means comprising a primary reduction gear for reducing the rotation of the electric motor and a secondary, planetary reduction gear for further reducing rotation of output of the primary reduction gear. The primary reduction gear having a reduction ratio so that the maximum number of rotations of the electric motor is reduced less than the characteristic torsion frequency of the drive system. The secondary reduction gear comprising an eccentric input shaft connected with the primary reduction gear, an external gear which is rotatable eccentrically in response to rotation of the input shaft, an internal gear held in mesh with and larger in number of teeth than the external gear by one, and carrier means held in engagement with the external gear.
498764
Hashimoto Mashataka
Iwata Michiyoshi
Matsumoto Kazuyuki
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Teijim Seiki Company Limited
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