Abstract: PCT No. PCT/US80/00137 Sec. 371 Date Feb. 11, 1980 Sec. 102(e) Date Feb. 11, 1980 PCT Filed Feb. 11, 1980This invention relates to an arbor assembly (10) for attaching a cutting tool (14) to a machine spindle (12). Replacing large cutting tools on multiple spindle milling machines has, heretofore, been a costly, frustrating and time-consuming job that is often aggrevated by the inaccessable placement of the tool-holding spindles on a machine.The above problems are effectively solved by providing an arbor assembly (10) having a spindle adapter (16) attachable to a machine spindle (12) and a mating cutting tool adapter (18) that is attachable to a cutting tool (14). The cutting tool adapter (18) is laterally separable from the spindle adapter (16) and is of particular use with vertically oriented spindles on multiple spindle milling machines.

Abstract: A tube expander (10) for extrudably deforming tubes (12) into conformity with a flange (16) has a plurality of first and second forming members (28,30) circumferentially arranged on a mandrel (20). In an initial position, the forming members (28,30) are axially offset and radially retracted for ease of insertion into the bore (13) of the tube (12). After insertion, the mandrel (20) is partially withdrawn by an actuator (64) and by such action, the forming members (28,30) are brought together in an abutting, axially aligned, and radially expanded relationship such that workpiece-contacting surfaces (40,42) of the forming members (28,30) are brought into substantially continuous circumferential contact with the tube bore 13. The workpiece-contacting surfaces (40,42) are maintained in continuous circumferential contact with the tube bore 13 as the forming members (28,30) and the mandrel (20) are withdrawn from the tube end, thereby uniformly extruding the tube.