Method and apparatus for making t-tube fittings
Method of manufacturing fins for heat exchangers
Combined processing apparatus
Apparatus and method for forming joints in tubing Patent #: 6044683
ApplicationNo. 10302378 filed on 11/22/2002
US Classes:72/335, Pre-cutting (i.e., before metal-deforming)72/370.27, Forming holes in tube29/890.148, T-shaped fitting making29/33T, Work on tubes72/348, With additional metal-deforming72/294, With cutting72/283Including a mandrel inserted within a hollow workpiece
ExaminersPrimary: Crane, Daniel C.
Attorney, Agent or Firm
International ClassesB21D 1900
AbstractAn automatic tube tee forming and trimming system uses a single apparatus for milling a hole in a tube, pulling a forming die through the milled hole, and face trimming the resulting pullout joint to the desired height. The forming die is pulled out through the hole via a universal driver which is simply attached to the drawbar without requiring any twisting to lock the assembly. The system may automatically conduct each of the steps once the tube is loaded into the apparatus. The apparatus completes the tube tee forming and trimming process in a relatively small cell, without the need to travel out to another factory area, within a relatively short period of time, and with minimal use of manual labor.