Hatebur Umformmaschinen Ag

Andreas Maritz

Andreas Matt

Thomas Christoffel

Markus Moser

Pascal Stemmelin

Simon Reimer

Stephan Leibundgut

Wolfgang Müller

A ring rolling device for enlarging a ring blank includes a press element, a rotatably mounted mandrel and an advancing arrangement in which the mandrel is rotatably mounted with a first end part in a first rolling bearing and with a second end part in a second rolling bearing. The ring blank can be mounted around the mandrel. By means of the advancing arrangement, the mandrel is movable towards the press element and away from the latter again, wherein a roll gap which decreases in size, and in which the ring blank is rolled, is formed between the mandrel and the press element. The two rolling bearings are arranged axially fixed in the advancing arrangement, and the mandrel is mounted so as to be axially movable relative to these two rolling bearings.

Ring rolling device with axially fixed rolling bearings

A transport apparatus for transferring workpieces in a processing device includes at least two stations having at least two gripping tool units arranged on a gripping tool support which is movable back and forth between the stations of the processing device. The gripping tool support is movably mounted so as to be linearly guided and mounted by a parallelogram guide arrangement so as to be displaceable transversely with respect to its linearly guided movability. The gripping tool support is movable by a gripping tool support drive with two crank gear arrangements each having a gripping tool support drive motor.

Transport apparatus for transferring workpieces in a processing device

In a transport method for transferring workpieces between a plurality of successive stations of a processing device, especially a forming device, workpieces are in each case transported from one station to the respective next station of the processing device simultaneously by means of a plurality of gripping tools which are movable jointly in a transport cycle. In the event of a process disturbance, the transport cycle is suspended and the gripping tools with the workpieces are moved into a waiting position in which the workpieces are outside the operating range of processing tools of the stations of the processing device. Once the process disturbance has been eliminated, the transport cycle of the workpieces is resumed. By virtue of the movement of the gripping tools into a safe waiting position outside the operating range of the processing tools of the stations, consequent damage resulting from the process disturbance can be prevented.

Transport method for transferring workpieces

A ring rolling device includes a drive roller and a rotatable revolving drum, in which five mandrels are rotatably mounted. Ring blanks can be mounted around the mandrels. By rotating the revolver drum, the mandrels move towards and away from the drive roller. The revolver drum is arranged in relation to the drive roller such that by rotating the revolver drum a decreasing roll gap is formed between a mandrel approaching the drive roller and the drive roller, in which roll gap a ring blank mounted around the mandrel is rolled during the rotating of the revolver drum. The revolver drum has four rotatably mounted support rollers, said support rollers supporting the mandrel in the direction of the rotational axis of the revolving drum, such that, during the rolling process, the mandrel is located between the support rollers and the press element.

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Dornach, Switzerland

Andreas Maritz