F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
74/76
F16H 25/06 (2006.01)
Patent
CA 2033061
2033061 9014532 PCTABS00002 Ball bearing transmission comprising an output part (3) lodged in a housing and an input part (1) on which is arranged a cam (1a) surrounded by a bearing (5) for the force-transmitting elements. The balls (6) which transmit the force are maintained in non-positive contact with the bearing (5) by a freely rotating inertial race (7) and are also guided by guides located in the housing (2a) itself and in the output part (3). One of these guides consists of either radial guide grooves (10) or a continuous fluted groove and the other consists of a continuous fluted sliding channel (11); the number of flutes is different from the number of radial guide grooves (10) and from the number of flutes of the first flutes sliding channel, and the number of balls is equal to the number of radial grooves (10) and to the number of points of intersection of the two fluted sliding channels with the reference circle. In a transmission in which the force-transmitting balls (6) are guided on one side in radial guide grooves (10), the ratio of the number of balls (6) and hence the number of radial guide grooves (10) to the number of flutes of the fluted sliding channel (11) is between n:(n-2) and n:(n+2), whereas in a transmission in which the force-transmitting balls (6) are guided on two sides in fluted sliding channels (11), the ratio of the number of balls (6) and hence the number of flutes in one fluted sliding channel to the number of flutes in the other fluted sliding channel (11) is at least equal to n:( +/- 2).
Bollmann Dieter
Fetherstonhaugh & Co.
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