Tool changing – Process
Patent
1996-06-10
1997-09-23
Briggs, William R.
Tool changing
Process
83552, 83563, 483 29, 72446, B23Q 3156, B21D 3714
Patent
active
056698666
ABSTRACT:
Method and Apparatus for economically providing an automatic tool changing capability to a numerically controlled punch press, without the addition of servo drives dedicated to the tool changer. The punch press has a back rail carrying work clamps and positionable along an X axis for positioning the workpiece along that axis. The punch and die assembly is carried in a work head which is servo driven along a Y axis, so that the pair of servos accomplish X, Y positioning with respect to the workpiece. A plurality of tool cartridges are carried on the back rail. To accomplish a tool change operation, the X axis servo is indexed to bring a selected tool holder to a tool change position, and the remaining positioning for making the tool exchange (either into an empty cartridge or from a full cartridge) is accomplished by Y positioning of the tool head, without the need to alter the workpiece Y position or index an auxiliary mechanism for a tool change operation.
REFERENCES:
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patent: 4000954 (1977-01-01), Patel
patent: 4359815 (1982-11-01), Toyoda
patent: 4423546 (1984-01-01), Scott et al.
patent: 4587716 (1986-05-01), Byton
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patent: 4951375 (1990-08-01), Erlenmaier
patent: 5224915 (1993-07-01), Kilian
patent: 5342276 (1994-08-01), Fujiwara et al.
Julian Alfred Joseph
Nitz Kevin C.
Briggs William R.
W. A. Whitney Co.
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