Device for a rapid positioning of a heavy carriage

Details Device for a rapid positioning of a heavy carriage Device for a rapid positioning of a heavy carriage

1992-08-10

1993-12-07

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74 8922, 74409, 74661, 74665B, 92 88, 92165R, 92165PR, 318593, G05G 1100, F16H 1904, F16H 1906

Patent

active

052674789

ABSTRACT:
A device for the rapid precision positioning of a heavy carriage employs stationary positioning bar, for instance a part of a linear electric motor or a gear rack, and a cooperating moving part of the linear motor or a motor attached to the carriage. The carriage is rapidly and roughly displaced with a further drive which may be constituted by a further gear wheel that cooperates with a gear rack and is driven by a separate motor attached to the carriage. This further drive additionally delivers a certain force for the final positioning in such a way that the play between the gear wheel and the gear rack is eliminated by biasing. Instead of a second gear wheel together with its motor a toothed belt, also driven by a separate motor, a pneumatic cylinder or a linear motor may be used. These are mounted separately from the carriage and ar principally fixed in space.

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