Cutting – With control means responsive to replaceable or selectable...
Patent
1976-08-11
1978-08-08
Yost, Frank T.
Cutting
With control means responsive to replaceable or selectable...
83219, 83221, 834031, 83916, B23D 2700
Patent
active
041049403
ABSTRACT:
A nibbling machine comprises a workpiece support which is driven by separate drive motors in longitudinal and transverse directions to shift the workpiece during the times at which it is not contacted by a punch which is arranged to reciprocate over the workpiece and to contact it and effect the nibbling thereof. A rotary control member is rotated in timed relationship to the means for driving the punch and it is connected to each of the motors for driving the workpiece support in a manner to start and stop these motors when the punch is raised off the workpiece for feeding the workpiece. The rotary member advantageously drives through an eccentric of adjustable magnitude to a fluid piston movable in a cylinder to displace a control fluid selectively to an oil volume dispenser which supplies oil to each of the fluid drive motors for operating the workpiece support in the transverse and longitudinal directions. Variations in the eccentric drive will cause variations in the timing of the drive of the fluid motors. The same control may be effected by an electrical drive system wherein the rotation of the control member causes actuation of an electric signal in proportion to the rotational position and the speed of rotation of the member. The adjustment may be effected by shifting pulse producing elements around on the surface of the control member so that a smaller or larger number of these elements pass a switch control dependent upon their distribution over the surface of the control member and the speed of rotation of the control member.
REFERENCES:
patent: 3563123 (1971-02-01), Leibinger
patent: 3991636 (1976-11-01), Devillers
patent: 4023788 (1977-05-01), Herb et al.
Bitzel Hubert
Herb Eugen
Petera Theodor
Trumpf Maschinen AG
Yost Frank T.
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