Cutting – Cutting motion of tool has component in direction of moving... – Tool mounted on oscillating standard
Patent
1987-11-05
1989-08-01
Schran, Donald R.
Cutting
Cutting motion of tool has component in direction of moving...
Tool mounted on oscillating standard
83298, 83295, B23D 2506, B26D 158
Patent
active
048524409
ABSTRACT:
An apparatus is of such a structure that it is possible to cut with flying shears, at great cutting accuracy, varying lengths under program control, this apparatus being of a compact construction and operating without mechanical intermediate members to be engaged and disengaged or to be exchanged as is the case with conventional pendulum shears. For this purpose, an eccentric (5) is provided for the oscillating drive of an oscillating yoke (2), as well as for carrying out the cutting stroke on both sides of the yoke (2). This eccentric is coupled with a top cutter bar (4) guided in the oscillating yoke (2) to be movable upwards and downwards, and is driven by controlled drive mechanisms (10) by way of associated gear systems in correspondence with the strip speed and the length of the strip material (6) to be cut off. In place of the oscillating yoke, it is also possible to provide top and bottom eccentrics driven in synchronism in opposite directions by way of controlled drive mechanisms, these eccentrics, during the cutting operation, moving the top and bottom cutter or tool bars by way of slotted guides toward each other to perform the cutting stroke as well as in the direction of movement and with the speed of the strip material. The apparatus serves for the continuous cutting to length of strip material fed from the coil.
REFERENCES:
patent: 3156150 (1964-11-01), Sarka
patent: 3518910 (1970-07-01), Munchbach
patent: 3906827 (1975-09-01), Fritz
patent: 3946630 (1976-03-01), Roehrig et al.
patent: 4319505 (1982-03-01), Otake et al.
patent: 4621554 (1986-11-01), Poloni
Patent Abstracts of Japan, M-71, Sep. 5, 1979, vol. 3, No. 105.
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