| 摘要 |
A process and apparatus for electromagnetically forming the end of an electrically conductive aluminum tube (32) onto an end fitting (34). The apparatus includes a main coil (104) and a field concentrator (156) movable into an opening (103) in the main coil. The field concentrator has a wide circumferential flange (155) and an inner radial web (168) with an axial channel (167) thorugh the center, and is split horizontally into two halves to permit insertion of the tube end and the end fitting therein. A pair of carriages (112, 114) mounted on rails (110) clamp the tube, and a gripper (170) holds the end fitting in the proper position in the tube end. The carriages carry the field concentrator, and the tube with its end fitting positioned in the center of the field concentrator web, into the coil where a magnetic field generated by the coil and concentrated by the field concentrator forms the end of the tube onto the end fitting. |
