Shaping metal tube tool to produce end reduction in tube - has head with interior and roller cavities with grooved engaging a portion of outer surface of tube as the tube passes, and mandrel disposed in and spaced apart from periphery of each grooved roller

摘要

The tool (100) comprises a head (116) having a longitudinally extending interior cavity (120) and roller cavities. Each of the roller cavities communicates with the interior cavity having grooved rollers, rollers rotatably mounted in one of the roller cavities. Each of the grooved rollers has a periphery extending into the interior cavity and configured to engage a portion of the outer surface of the tube as the tube passes into the interior cavity of the head. A mandrel (134) is disposed within the interior cavity of the head, having a first end protruding forward from the head and an opposite end secured to the head. The mandrel is spaced apart from the periphery of each of the grooved rollers, the mandrel being inserted into the hollow interior of the tube as the tube passes into the interior cavity. The head includes a base block, a spacer portion connected to the base block, and a face block portion connected to the spacer portion. The base block, the spacer portion and the face block portion combine to define the interior cavity. The mandrel extends longitudinally through the face block portion and the spacer portion and into the base block.