Universal mill stand for forming tubes

A universal mill stand for continuously forming tubes along a longitudinal axis, comprising:

• a housing;
• complete universal assemblies removably and interchangeably mounted on the housing, each of the assemblies having two pairs of rollers, the rollers of each pair being arranged across from one another on a common plane vertical to the longitudinal axis, one of the universal assemblies having rollers for producing round tubes and another of the universal assemblies having rollers for producing profiled tubes, the universal assembly for producing profiled tubes including chocks in which the rollers are held, each one of the chocks holding one of the rollers, the chocks being configured to form a box-like construction, each of the chocks being mounted on the universal assembly so as to be moveable parallel and at a right angle to the axis of the roller held by the chock;
• means for moving the chocks;
• and,
• guide means for guiding movement of the chocks, the guide means including slide members and slide grooves which accommodate the slide members, the slide members and slide grooves being arranged on sides of the chocks, the slide members for adjacent chocks of the universal assembly being arranged to run perpendicular to one another.