METHOD AND DEVICE FOR INCREMENTALLY SHAPING PROFILED PIPES, IN PARTICULAR PROFILED PIPES HAVING CROSS-SECTIONS THAT VARY OVER THE LONGITUDINAL AXIS AND PROFILED PIPE OF THIS TYPE

摘要

The invention relates to a method for incrementally shaping profiled pipes (2), in particular profiled pipes (2) having cross-sections that vary over the longitudinal axis. In the method according to the invention, a pipe (2) is passed by a tool (3) with the aid of an advancing apparatus. The tool (3) can consist of a single individual tool or a plurality of individual tools, the number of said tools (3) depending on the geometry to be produced. Each individual tool (3) has a plurality of degrees of freedom in various directions (8) and is furthermore provided with a freely defined geometric surface (6). This means that various tools (3) can be used, which contain teeth shapes (6) or the like, for example. By means of a very simple tool change in the corresponding device, it is also possible to process various cross-sections or pipe diameters within a wide range.