Gripping device

Details Gripping device Gripping device

1999-03-18

2001-01-30

Watson, Robert C. (Department: 3723)

Work holders

Relatively movable jaws

With means for lateral adjustment of jaw portions

C269S246000, C269S251000, C269S272000, C269S902000, C269S268000

Reexamination Certificate

active

06179279

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a device for gripping articles having various shapes.
In order to grip articles having triangular, semicircular, trapezoidal, L and other shapes, particularly small ones, it was necessary to machine gripping surfaces according to the contour of an article to be gripped, or use V-blocks and liners in combination.
But conventional methods are low in versatility and workability. Also, it was extremely difficult to fix a small article to be gripped in a parallel or vertical position with respect to an X-Y table of a machine tool.
An object of the present invention is to provide a gripper which is structurally simple and can reliably and quickly grip small articles of different shapes.
SUMMARY OF THE INVENTION
According to the present invention, there is provided a gripper for gripping an article having an irregular shape, comprising a base, a fixed member mounted on the base, a movable member mounted on the base so as to be movable in a first direction toward and away from the fixed member, a first gripper portion provided on the fixed member and having a first gripper groove having a V shape in plan view, a second gripper portion provided on the movable member and having a second gripper groove having a V shape in plan view and arranged opposite the first gripper groove, and a moving/fixing means for moving the second gripper portion toward the first gripper portion together with the movable member so that an article K will be gripped firmly between the first and second gripping portions. The second gripper portion is slidable in a second direction perpendicular to the first direction relative to the first gripper portion. Each of the first and second gripper portions comprises a plurality of plates arranged in vertical tiers like a comb and adapted to be inserted in spaces defined by the plates of the other gripper portion.
According to the present invention, there is also provided a gripper for gripping an article having an irregular shape, comprising a base, a fixed member mounted on the base, a movable member mounted on the base so as to be movable in a first direction toward and away from the fixed member, a first gripper portion provided on the fixed member and having a first gripper groove having a V shape in plan view, a second gripper portion provided on the movable member and having a second gripper groove having a V shape in plan view and arranged opposite the first gripper groove, and a moving/fixing means for moving the second gripper portion toward the first gripper portion together with the movable member so that an article K will be gripped firmly between the first and second gripping portions. The first gripper portion is slidable in a second direction perpendicular to the first direction relative to the second gripper portion. Each of the first and second gripper portions comprises a plurality of plates arranged in vertical tiers like a comb and adapted to be inserted in spaces defined by the plates of the other gripper portion.
Other features and objects of the present invention will become apparent from the following description made with reference to the accompanying drawings, in which:


REFERENCES:
patent: 468272 (1892-02-01), Watt
patent: 2573275 (1951-10-01), Roberts

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