Abrading – Precision device or process - or with condition responsive...
Patent
1993-02-18
1995-08-15
Rachuba, Maurina T.
Abrading
Precision device or process - or with condition responsive...
451 5, 451 8, 451 9, 451 10, 451303, 451304, B24B 4900
Patent
active
054414377
ABSTRACT:
A floating-type or compliant follower system for use in conjunction with a robotic or automated workpiece finishing apparatus. The follower device in a preferred embodiment cooperates with the tool to create a contact force with the workpiece which can be maintained constant with a high degree of accuracy and with a high responsiveness. The follower device in a preferred embodiment includes a constant-torque rotatable electric motor, such as a servo motor, which torque remains constant even when the motor is held in a stall condition by an external load or is driven backwards by the load. The motor output is drivingly coupled through a rotary-to-linear drive mechanism to a follower which is coupled to a driving tool such as a belt grinder. Energization of the follower motor causes the follower to act against the tool to maintain a constant force between the tool and workpiece, with the motor rotor being maintained substantially in a stall condition, but being capable of oscillating back and forth while maintaining a substantially constant torque to maintain a constant contact force.
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