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Apparatus for deforming the surface of a cylindrical metal portion of a workpiece at and adjacent its end includes a rotating disk having radially extending slots. Slide members having roller deforming tools rotatably journalled at one end are positioned in a respective slot with the tool disposed r

Apparatus for deforming the surface of a cylindrical metal portion of a workpiece at and adjacent its end includes a rotating disk having radially extending slots. Slide members having roller deforming tools rotatably journalled at one end are positioned in a respective slot with the tool disposed radially inwardly, the tools having axes of rotation parallel to the axis of rotation of the disk. A follower member is fastened to the other end of the slide member and extends outwardly from the slot beyond the circumference of the disk. The disk is mounted within an annular shell having a tapered internal cam surface varying in diameter in the axial direction. The shell is mounted for rotation with the disk but axially moveable relative to the disk. Abutment members are positioned behind the rear surface of the shell and is driven axially to force the shell to move in the axial direction to drive the followers and thus the tools radially inwardly against the surface of the workpiece which is clamped along the axis of the disk by a power driven vise. When the force applied to the abutment member is reversed springs between the disk and the shell return the shell to the initial position.

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Apparatus for deforming a cylindrical surface of a workpiece comprising, a disk having a front face and an axial channel for receiving said workpiece secured in front of said front face, rotatable drive means for rotating said disk about an axis extending through said channel, a plurality of radial

Apparatus for deforming a cylindrical surface of a workpiece comprising, a disk having a front face and an axial channel for receiving said workpiece secured in front of said front face, rotatable drive means for rotating said disk about an axis extending through said channel, a plurality of radial slots extending from said channel to the circumference of said disk, a slide member disposed in a respective slot so as to have a radially inward end and a radially outward end, a deforming tool in the form of a roller rotatably carried by each of said slide members at said radially inward end, each of said rollers having an axis of rotation substantially parallel to the axis of said channel, a cam follower carried by each slide member at the respective radially outward end and extending out of each respective slot, an annular shell disposed concentrically about said disk, said shell having an internal annular surface abutting said cam followers, means connecting said shell to said disk for rotation therewith and for axial movement relatively thereto, said internal surface being annularly inclined relative to said axis to define an annular cam having a varying diameter increasing from a first end toward a second end, and axial drive means for moving said shell axially relatively to said disk in the direction in which said diameter increases so that progressively smaller diameter portions of said internal surface abut said followers to move said deforming tools progressively closer toward said channel for progressively deforming said workpiece.