| 摘要 |
A device and method for roller swaging a tube and a fitting using a tapered mandrel acting on forming rollers and having a rack body that supports lead screws that are rotated by a rack motor where the lead screws are used to move the rack drive head and the axial position of the mandrel. The mandrel is supported by a roller bearing having roller elements that are parallel to the rotational axis of the mandrel. A position sensor is attached between the rack body and the rack drive head to indirectly measure the position of the mandrel and/or a position sensor can be used to directly measure the position of the mandrel. The drive motor drives a primary drive shaft through a torque sensor to a secondary drive shaft to a roller swaging assembly and to the mandrel. The swage rollers in the roller swaging assembly are forced outward by the tapered mandrel to swage the tube and fitting. Prior to beginning the swage, the mandrel is moved into the tube until the torque sensor increases, the position of the rack drive head is measured and a calculation of the required swaging process is made by a controller. After the swage, the mandrel is again moved into the tube until the torque increases and the position of the rack drive head is measured and is used to determine the quality of the swage. Alternatively, pneumatic cylinders are used to initially axially move the mandrel into position where angled rollers then apply an axial force to the mandrel when the mandrel is rotated. |
