Patent EA-003356-B1 (EA)
Title: Forming machine with a cutting device
Inventor: ZANZERL HERMANN
IPC: B21K27/06
Filed: 2000-09-22
Abstract: 1. A forming machine with a cutting device comprises a slicing round blade consisting of a half-blade, a stationary bar-cutter blade (2) and displaceable in relation to a centering and clamping piece (3) and cooperating with said slicing blade and displaceable in relation to said bar-cutter blade (1) designed as a closed round blade, characterized in that said machine comprises a control means (38) for displacing said centering and clamping piece (3) between a centering position in which, during operation, it centers a bar to be cut without clamping said bar, a lifted position, in which it is completely removed from said bar and a clamping position, in which it clamps said bar. 2. The machine according to claim 1, characterized in that said bar-cutter blade is arranged in a holder (11) adapted to precise positioning using one of fitting plates (114, 116) in each direction and preferably by one of correcting plates (115, 117) in each direction relative to the required position of the bar to be cut in two directions perpendicular the bar to be cut. 3. The machine according to claim 2, characterized in that the holder (11) of the bar-cutter blade is detachably fixed on the blade head (113) arranged on displaceable carriages (12) for blades. 4. The machine according to claim 3, characterized in that the bar-cutter blade (1), its holder (11) and the blade head (113) are a part of the detachable cassette (110) of the blade head. 5. The machine according to any of claims 1 to 4, characterized in that the control means comprises a control cam (38) so designed that the centering and clamping piece (3) first is moved to the bar to be cut in a centering position for its centering without clamping after which during further move-in of the bar to be cut into the opening of the bar-cutter blade (1) is completely removed from the bar to be cut into a lifted position, then is led to the bar in a clamping position for its clamping during the cut operation and finally withdrawn from the bar. 6. The machine according to claim 5, characterized in that the centering and clamping piece (3) is mounted enabling to displace using centering-clamping carriages (31) controlled by a cam (38). 7. The machine according to any of claims 1 to 6, characterized in that the centering and clamping piece (3) is mounted on the holder (39) connected enabling to displace, preferably rotating to a holder (21) on which the bar-cutter blade (2) is arranged. 8. The machine according to claim 7, characterized in that the holder (39) of the centering and clamping piece (3) is pre shifted so that that the centering and clamping piece (3) is pressed in the direction from the bar-cutter blade (2) to a pressure plate (314), said pressure plate is arranged on the centering and clamping carriages. 9. The machine according to any of claims 1 to 8, characterized in that the slicing round blade formed by the bar-cutter blade and the centering and clamping piece (3) is adapted to precise positioning using one of fitting plates (64, 66) in each direction and preferably by one of correcting plates (65, 67) in each direction relative to the required position of the bar to be cut in two directions perpendicular the bar to be cut. 10. The machine according to any of claims 1 to 9, characterized in that the stationary bar-cutter blade (2), centering and clamping piece (3) and, if necessity arises, the holder (39) of the centering and clamping piece and the holder (21) of the bar-cutter blade are arranged in a detachable cutting and charging cassette (6). 11. The machine according to any of claims 1 to 10, characterized in that the machine is intended for pressure hot forming.