Compact toothed wheel gearing with large gear ratio

Details Compact toothed wheel gearing with large gear ratio Compact toothed wheel gearing with large gear ratio

1999-11-30

2000-09-19

Bucci, David A.

Machine element or mechanism

Control lever and linkage systems

Multiple controlling elements for single controlled element

475329, 475336, 901 26, F16H 3704, F16H 128

Patent

active

061195421

ABSTRACT:
A compact gear system that includes an input shaft (28), an output shaft (1) and gear wheels which drivingly connect the same, wherein the output shaft (1) is journalled in a gear housing (2). The output shaft (1) is hollow and has pins (5a) which project radially outwards in a normal plane and each of which carries a gear wheel (6). Provided on each side of the pins is a respective crown wheel (11, 12) journalled on the output shaft (1) and having a toothed ring (17, 18) in engagement with the gear wheel (6). Each crown wheel also has a cylindrical toothed ring (19, 20) which coacts at different transmission ratios with a respective toothed ring (25, 26) on an eccentric shaft (21) which extends parallel with the output shaft (1) and which is rotatably journalled in the housing (2), wherein the eccentric shaft (21) is driven by the input shaft (28). As the input shaft (28) rotates, the pins are forced to rotate about the center axis of the output shaft (1) and therewith entrain the output shaft with high reduction. The compact gear system is particularly intended for rotating the arm of an industrial robot in relation to the robot frame.

REFERENCES:
patent: 140622 (1873-08-01), Gilfillan
patent: 1802112 (1931-04-01), Henderson et al.
patent: 2390742 (1945-12-01), Setterlund
patent: 5575179 (1996-11-01), Arbrink
patent: 5993348 (1999-11-01), Arbrink

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