Hatebur Umformmaschinen Ag

Hermann Zanzerl

Markus Moser

Heinz Dettwiler

A machine with a cutting device includes a stationary bar-cutter blade and a slicing blade which cooperates with and is displaceable in relation to the bar-cutter blade. The slicing blade is a closed circular blade. The bar-cutter blade is a half blade and cooperates with a centering and clamping piece, which is displaceable in relation to the bar-cutter blade, to form together a slotted round blade. The centering and clamping piece can be controllably displaced between a centering position, in which, during operation, the bar to be cut is centered without clamping of the bar; a released position, in which the centering and clamping piece is completely removed from the bar, and a clamping position, in which the centering and clamping piece clamps the bar.

Forming machine with cutting device

In a multistage forming machine, an apron is screwed to a press slide. At its upper end, the apron has six elongated clamping cams, distributed over its width, while four upwardly projecting clamping lugs are fitted at is lower end. Suspended in the apron is a combined tool block with a wedge-shaped supporting plate. Four clamping lugs, distributed over the width, are formed at the upper end of the supporting plate, while four clamping cams are formed at the lower end. The clamping lugs of the combined tool block are suspended by means of the clamping cams of the apron, while the clamping cams of the combined tool block are inserted between the clamping lugs and the main part of the apron. By means of two clamping devices, a clamping force acting in the vertical direction of the combined tool block is produced, bringing about a clamping of the combine tool block and the press slide in the horizontal direction.

Multistage metal-forming machine tool having tool combination blocks

A method and apparatus achieve the intermittent feeding of raw material into a shearing station by exerting a drive torque on draw-in rollers in order to effect their rotation in one arcuate direction and hence the movement of the raw material toward the shearing station. A counteracting torque, which is less than the drive torque, is continuously exerted on the draw-in rollers. Thus, during intervals following a shearing operation when the drive torque is terminated, the counteracting torque functions to reverse the rotation of the draw-in rollers and hence retract the sheared end of the raw material away from the shearing station.

Method and device for drawing wire into a shearing station of a forming

The ejector pin for ejecting a workpiece from a die of a stamping machine is actuated by means of a cam shaft oscillated back and forth on the machine frame through less than one revolution, a radial cam mounted on the shaft, and a motion transmitting rocker carrying a cam follower. The stroke of the ejector pin can be set by angularly shifting the position of the cam on the shaft, the angular length of the cam shaft being greater than the angular spacing of the terminal shaft positions. The portion of the cam face first engaged by the cam follower during the working stroke of the ejector pin spirals uniformly outward from the cam shaft axis to an outermost position which is reached before the cam shaft movement stops.

Growing community of inventors

Olsberg, Switzerland

Hermann Zanzerl