The invention relates to a radial roller head according to the earlier part of patent claim 1.
From DE 42 36 085 there is known a radial roller head with rollers arranged in a holder distributed at equal angular distances and at axial distances about the rolling axis. The roller surfaces have a spiral-shaped increasing course over the circumference opposed to their rotational direction. The rollers are coupled to a toothed gearing and a locking latches automatically after each complete roller revolution. Before the rolling procedure the locking is released, this being by the subject which is to be formed with the rollers. With the known radial roller head there is provided a stop which limits the introduction movement of the subject between the rollers, which is coupled to the locking of the rollers and which is displaceable in the direction of the rolling axis about an operating stroke against the action o)f compression springs. The locking is released on bearing of the subject due to its movement about the operating stroke.
With the known radial roller head there is the danger that during the releasing procedure or also thereafter a relative movement takes place between the subject and rollers if the subject has not achieved its stationary situation. This procedure naturally inhibits the forming procedure.