Endless belt power transmission systems or components – Positive drive pulley or guide roll – With stationary support for pulley or guide roll
Patent
1990-03-08
1991-02-19
Bui, Thuy M.
Endless belt power transmission systems or components
Positive drive pulley or guide roll
With stationary support for pulley or guide roll
474 86, 474101, F16H 100, F16H 700
Patent
active
049939971
ABSTRACT:
A two axis drive lugged belt and lugged pulley drive system driving a driven member independently in two, mutually perpendicular areas with the drive in each direction operational alone or simultaneously for vector movement of the driven member. Both X-Y axis are directly belt-driven by respective motors and with the axis considered "Y" the primary hysteresis minimizing drive is directed primarily to the lugged belt of substantial length in the "Y" axis. This is with the "Y" drive lugged belt routed around six pulleys to move the "X" axis carriage mounting and guide structure, with the belt attached at two points, at opposite sides of one end of the "X" axis carriage mounting and guide structure. The drive motor for the "Y" drive lugged belt is directly coupled to one of the six pulleys that is gear meshed to another of the six pulleys assuring precise synchronous counter-rotation of the paired set of pulleys at one corner of the "Y" drive. There is a second set of gear meshed pulleys at an "X" direction displaced corner from the corner set of motor driven pulleys. One side of one dual leg of the drive lugged belt is twisted and opposite end belt connections are reversed for proper belt lug engagement with the lugged pulleys of each set pair of gear meshed pulleys. The lugged belt is attached to opposite ends of the "X" axis carriage with the opposite ends of the belt in close adjacency at one end of the "X" axis carriage and with the inside section of a belt loop segment clipped to the other end of the "X" axis carriage.
REFERENCES:
patent: 3605977 (1971-09-01), Janz et al.
patent: 4259810 (1981-04-01), West
patent: 4507102 (1985-03-01), Geis et al.
patent: 4708695 (1987-11-01), Sugiyama
Bui Thuy M.
Kintzinger Warren H.
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