Parallel gripper having a force measuring arrangement

Details Parallel gripper having a force measuring arrangement Parallel gripper having a force measuring arrangement

1995-03-28

1997-03-11

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Slideable jaws

294907, 901 34, 901 38, 901 46, B25J 1502, B25J 1902

Patent

active

056093810

ABSTRACT:
A parallel gripper includes an electric motor; a threaded spindle connected to the motor to be driven thereby about a longitudinal spindle axis; a spindle nut threadedly mounted on the spindle for longitudinal travel therealong upon rotation of the spindle; a support block affixed to the nut; an arrangement for preventing a rotation of the spindle nut about the spindle axis; a mounting plate for accommodating a gripper jaw thereon; and a first, a second, a third and a fourth web coupling the mounting plate to the support block. The first and second webs are parallel to one another and are spaced in a direction parallel to the spindle axis; and also, the third and fourth webs are parallel to one another and are spaced in a direction parallel to the spindle axis. Further, strain gauges are mounted on the webs for emitting signals representing a bending deformation the webs undergo in response to a reaction force generated by a gripping force of the gripper.

REFERENCES:
patent: 4132318 (1979-01-01), Wang et al.
patent: 4456293 (1984-06-01), Panissidi
patent: 4478089 (1984-10-01), Aviles et al.
patent: 4579380 (1986-04-01), Zarmesky et al.
patent: 4653793 (1987-03-01), Guinot et al.
patent: 4699414 (1987-10-01), Jones
patent: 4819978 (1989-04-01), Scheinman et al.
patent: 4872803 (1989-10-01), Asakawa

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