Device and process for producing or processing workpieces from a preform, in particular for integrally forming internal profiles or internal tooth systems

A device for generating or processing work pieces from a preform (4.1), the device having an axially movable mandrel (1a) which is mounted so that it can be rotated about a longitudinal axis (x) of the device and displaced axially parallel to and along the longitudinal axis (x), and a chuck (1b) for tensioning the preform (4.1) and a sleeve (2a) which can be coupled to the mandrel (1a) and is mounted displaceably along the longitudinal direction (x) and a shaping unit (3) for shaping the preform (4.1), wherein the preform (4.1) can be axially and radially fixed and tensioned in a composite unit comprising the sleeve (2a) and the mandrel (1a) so that a closed unit comprising the sleeve (2a), the preform (4.1), the mandrel (1a) and the chuck (1b) is formed, wherein the device comprises a catch element (1d), wherein the shaping unit (3) can be moved in an axial direction towards the catch element (1d) so that the preform (4.1) is pressed upon contact with the catch element against the catch element (1d), characterized in that the mandrel (1a) and catch element (1d) are coupled together to a main spindle (1) and prevented from rotational movement independent of one another, and wherein the chuck (1b) is axially fixed with the axially movable mandrel (1a), wherein the chuck (1b) is configured for rotational movement about said longitudinal axis (x) independent of and in relation to any rotational movement of said mandrel, and wherein the chuck (1b) is configured for rotational movement about said longitudinal axis (x) in relation to said preform (4.1).