Linear motor-driven table apparatus capable of operating both in

Details Linear motor-driven table apparatus capable of operating both in Linear motor-driven table apparatus capable of operating both in

1987-06-15

1988-09-27

Budd, Mark O.

Electricity: motive power systems

Linear-movement motors

310 13, H02K 4102

Patent

active

047744472

ABSTRACT:
A linear motor-driven table apparatus is capable of operating both in fine-feed mode and large-feed mode. The table apparatus comprises a base, an intermediate carriage and a table body, the intermediate carriage and the table body being carried by the base through linear bearings such that the intermediate carriage and the table body are movable in the longitudinal direction of the base with respect to the base and with respect to each other. The movement of the intermediate carriage with respect to the base is effected by a first linear motor acting therebetween, while the movement of the table body with respect to the intermediate carriage is caused by a second linear motor acting therebetween. The amount of feed of the table body with respect to the base is controlled by controlling the supply of pulses to the first and second linear motors.

REFERENCES:
patent: 3268747 (1966-08-01), Snowdon
patent: 3716731 (1973-02-01), Nilsson
patent: 4315171 (1982-02-01), Schaeffer

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