Wilhelm Hegenscheidt Gesellschaft Mbh

Wilhelm Hegenscheidt Gmbh

Lothar Heymanns

Heinz Vom Dorp

According to the present apparatus work pieces such as railroad wheels are power clamped on a cone shaped inwardly facing side. In a first clamping step clamping areas are impressed into the side or surface of the work piece said clamping areas having a suitable inclination. In a second clamping step the actual power clamping is performed at these clamping areas. For this purpose a plurality of radially moving clamping jaws are arranged to carry at least one clamping tooth. Each clamping tooth in turn is adjustable in its position in an axial direction along its respective radially moveable clamping jaw.

Apparatus for power clamping work pieces

A combined tool for precision boring and burnishing the internal surfaces of workpieces comprises a bore head arrangement, a burnishing head arrangement rearwardly of the bore head arrangement and a feed tube arrangement connected to the burnishing head arrangement for axially advancing the latter and the bore head arrangement into a rotating workpiece for finishing the internal surface thereof while a stream of flushing oil under pressure is fed about the tool for removing chips shaved off by the bore head arrangement. The bore head arrangement is provided with a plurality of circumferentially displaced oil pockets which are supplied with oil under pressure for hydrostatically supporting and guiding the bore head arrangement during its advance. The three mentioned arrangements are connected to each other for simultaneous advance into the workpiece while being prevented from rotating relative to each other and the connectors preferably include a coupling arrangement between at least two of the three first-mentioned arrangements for transmitting a moment from one to the other of the two arrangements by permitting limit deviation of the axes thereof.

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Monchen-Gladbach, Germany

Lothar Heymanns