Internal roller swaging device and method

A swaging device comprising:

• a roller swaging assembly configured to receive a fitting with an inserted tube, said roller swaging assembly including expandable swage rollers;
• a mandrel having a central axis and extending through said roller swaging assembly;
• a forming assembly including said mandrel and said expandable swage rollers;
• an axial movement of said mandrel in combination with said swage rollers facilitating a swaging of said received tube;
• a position sensor positioned axially along the central axis of the mandrel;
• a relative axial position of said mandrel to the roller swaging assembly being measured using said position sensor;
• and
• a controller configured to calculate an actual wall thickness of the tube based on the measurement of the axial position.

A device for swaging a tube and a fitting to one another, the device comprising:

• a drive mechanism including a drive motor;
• a mandrel having a central axis and rotated by said drive mechanism to swage the tube and fitting to one another;
• a drive head disposed between the drive mechanism and the mandrel;
• a position sensor, positioned axially along the central axis of the mandrel, for measuring an axial position of said mandrel;
• and
• a controller configured to terminate swaging in response to receiving a signal generated by a torque sensor, and configured to calculate an actual wall thickness of the tube based on an axial position of the mandrel as determined from the position sensor;
• wherein the torque sensor is configured to generate the signal indicative of a torque rise associated with a flow of tube material consisting of flow in an axial direction along the fitting.