Witzig & Frank Gmbh

Ffg Werke Gmbh

Mag Ias Gmbh

Walter Bauer

Frank Baumbusch

Walter Viegener

Manfred König

Bernd Koschig

Walter Viegner, Jr

Timo Remmel

Helmut Nebeling

Jürgen Nägeler

The method for the manufacture of wall connector pieces is based on a thin-walled tubular blank which is first reduced in diameter at least one, preferably both ends in order to increase the wall thickness. In this way, a basis is provided for further shaping, for example, the manufacture of a connector piece () or a closed end ().

Method for manufacturing a wall connector

Devices and methods for manufacturing fittings () with different ends () are disclosed, such fittings permitting different measures of connection. For example, one fitting () is a threaded end connector with its one end () being potentially configured as a compression fitting and its other end () as a thread-bearing end. An intermediate section () having preferably a polygonal cross-section is provided between the two ends (). Starting with a pipe piece (), the manufacture takes place in a few process-safe method steps.

Method and device for manufacturing pipe connectors

In a method for producing a coupling on a pipe, preferably consisting of copper or steel or Cu&#x2014;, Ni&#x2014;, Fe&#x2014; alloys, by way of a preferably graduated or one-stage expansion of the pipe end to create a much larger difference in diameter, an expansion tool is introduced axially into the end of the pipe. Once the expansion tool has been introduced into the pipe end, the region of the pipe end that is to be or has been expanded is completely or partially compressed, by a force acting axially on the pipe end, so that the external diameter of the pipe end that is to be processed is delimited by one or more shaping jaws that completely or partially surround the pipe end. The invention also relates to a device for producing a coupling on a pipe end according to the method.

Method for producing a coupling on a pipe and device for producing said coupling

A machine tool is provided, in particular for the synchronous machining of workpieces. The tool includes two or more spindle units (), which run parallel in a machining unit and are designed to hold tools and repositioning devices for the precise adjustment of the position of the spindle units () in relation to one another, preferably in all three directions x, y and z of the orthogonal co-ordinate system in the machining unit (). The repositioning devices for displacing at least one of the spindle units (), at least in an x and/or y direction, include an eccentric bush (), which can be rotated about a central shaft (B, B) and locked and in which the spindle units () are mounted eccentrically, parallel to the central shaft (B, B).

Machine tool comprising parallel tool spindles that can be repositioned in relation to one another

Special steel press fittings are produced in two process steps, which can be performed simultaneously, or also one after the other. The cut to size blank is widened in a die is upset in order to form the desired pipe connection areas.

Process and device for producing press fittings from steel, in particular special steel

A technique for controlling a machining system having a plurality of machining stations for machining workpieces with a plurality of machining operations. Each of the plurality of machining operations is allocated automatically to a specific one of the machining stations to attain uniform utilization of the individual machining stations, to the extent possible. This facilitates the initial setup of the machining system as well as correcting the setup if machining errors or deviations occur.

Automatic allocation of machining operations to a plurality of machining stations

The invention relates to a machine tool comprising at least one machining unit having at least one work spindle which can be driven. The machine tool also comprises at least one tool magazine arranged in the working area, and has actuating devices for automatically shifting the tools between the tool holding fixture situated on the spindle and the tool holding fixture situated on the tool magazine. The tool holding fixture situated on the spindle is provided with a hydraulic expansion chuck which, with the aid of the spindle, can automatically press against the tool shaft of a tool.

Machine tool

A machine tool (,) has at least one but preferably two machining units (,), which are assigned to two workpiece receptacles (,). The machining units (,) are adjustable in three axes (X, Y, Z), and they can each reach both workpiece receptacles (,). The machining units (,) are oriented such that their work spindles (,) are in a preferably right space angle to one another. As a result, they can be moved past one another without colliding. Moreover, they can also work on the same workpiece at the same time. The workpiece receptacles are positionable independently of one another about a preferably but not necessarily common pivot axis (S). The workpieces are also rotatable about an axis (V) perpendicular to the pivot axis. This arrangement enables flexible machining of the workpieces from arbitrary directions in space. Because each machining unit (,) in principle can machine every side of the workpiece of every workpiece receptacle (,), both machining units (,can be utilized evenly. This minimizes idle times and time losses.

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Simmozheim, Germany

Walter Bauer