Centerless feed-through super-finishing device having a lapping system containing a freely-disposed abrasive

Abstract

A centerless feed-through super-finishing device including: first and second feed-through rollers having first and second longitudinal outer surfaces; a metallic part having a generally cylindrical section, disposed between the outer surfaces, wherein a longitudinal axis of the cylindrical section is generally aligned with the outer surfaces, the cylindrical section having a metal working surface, the outer surfaces disposed in a near-parallel fashion; a rotating mechanism for rotation of the rollers along respective longitudinal axes thereof, and for effecting thereby a rotation of the cylindrical section, wherein an angle between the rollers is selected such that rotation of the rollers propels the cylindrical section between the rollers; and a lapping system including: a lapping tool having a polymeric contact surface disposed to contact the working surface, and a lapping mechanism, associated with the lapping tool, adapted to exert a load on the contact and working surfaces; and abrasive particles, freely disposed between the contact and working surfaces, wherein the contact surface and the lapping mechanism are adapted, and the abrasive particles are selected, such that the relative motion under the load effects lapping of the working surface, and wherein the surfaces of the rollers are covered with a polymeric material.