Abstract: Various kinds of finishing and hardening treatments of holes by methods of plastic surface deformation can find application in many branches of engineering industry. In particular for burnishing holes on a milling or drilling machine tool. A device for diamond-burnishing of holes increases the functional possibilities, improves the quality of the treated hole surface and the endurance of the burnishing tool, provides the opportunity for a precise regulation in order to get the necessary hole caliber, and uses the load of all the weights for obtaining the necessary pressing force. The device structure comprises a housing with a tapered stem, central and terminal arms with crossheads and shafts, bars with weights, a foot with a cylindrical body, and an arbor with a diamond-burnishing tool.

Abstract: The present invention relates to various kinds of finishing and hardening treatment of holes in pieces by methods of plastic surface deformation and can find application in many branches of engineering industry. It is designed to burnish holes on a milling or drilling machine tool. The device for diamond-burnishing of holes enables to enlarge the functional possibilities, to improve the quality of the treated hole surface, the endurance of the burnishing tool, to eliminate a gap of the rod, to provide the opportunity for a precise regulation in order to get the necessary hole caliber, to use the load of all the weights for obtaining the necessary pressing force. The device structure comprises a housing with a tapered stem, central and terminal arms with crossheads and shafts, bars with weights, a foot with a cylindrical bode and an arbor with a diamond-burnishing tool.