US PATENT SUBCLASS 72 / 86
.~.~ Using angularly related roller-couple acting parallel to axis of work rotation

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

67  DF  BY USE OF TOOL ACTING DURING RELATIVE ROTATION BETWEEN TOOL AND WORK ABOUT INTERNAL CENTER (E.G., GYRATING OR ROTATING TOOL) {10}
80  DF  .~ During rotation of work {12}
86.~.~ Using angularly related roller-couple acting parallel to axis of work rotation {1}
87  DF  .~.~.~> And additional work-engaging tool, circumferentially spaced about axis of work rotation

DEFINITION

Classification: 72/86

Using angularly related roller couple acting parallel to axis of work rotation:

(under subclass 80) Subject matter including a roller couple* wherein the axes of the rollers of the roller couple are not parallel to each other, and wherein the roller couple is particularly adapted to opposingly engage the radial surfaces of a rotating disklike workpiece such that during metal deformation, the deforming forces of the rollers on the work are opposed to each other and are parallel to the work axis.

(1) Note. The term "disklike" used in this definition is intended to include an annular workpiece having radial surfaces opposingly engaged by the roller-couple. The product formed is usually the wheel of a railroad car, the wheel having a relatively thick, flanged rim connected to a hub by a relatively thin disc.