Upper action tool for burnishing toroidal fillet, has roller supported on annular radial lateral face of groove to compensate reaction force of axial component of burnishing force applied by pulley on toroidal fillet

摘要

#CMT# #/CMT# The tool (18) has a wheel (52) in a parallelepiped shaped housing (30) and in support on a pulley (40) having a burnishing strength on a cylindrical shaped annular groove (14) presenting a radial component and a component along an axis (B-B) of the wheel. A truncated conical shaped roller (58) forms an abutment element and is supported on an annular radial lateral face (17b) of the groove to compensate the reaction force of the axial component of the burnishing force applied by the pulley on a toroidal fillet (16a). #CMT#USE : #/CMT# Upper action tool for burnishing a toroidal fillet between a convex annular axial cylindrical face defining the bottom of a cylindrical shaped annular groove in a rotating part i.e. crankshaft, of an internal combustion engine of a motor vehicle, and an annular radial lateral face at the edge of the groove for a burnishing machine (claimed) that is utilized for hardening certain zones of the crankshaft. #CMT#ADVANTAGE : #/CMT# The truncated conical shaped roller is supported on the lateral face of the groove to compensate the reaction force of the axial component of the burnishing force applied by the pulley on the toroidal fillet, thus improving the quality and the reliability of the crankshaft, and hence improving the performance of the engine and reducing the size of the engine. The action tool burnishes the toroidal fillet in a simple manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a partial schematic transversal sectional view of a burnishing machine showing the hardening of a toroidal fillet of a crankshaft by a pulley. B-B : Axis 14 : Cylindrical shaped annular groove 16a : Toroidal fillet 17b : Annular radial lateral face 18 : Upper action tool 30 : Parallelepiped shaped housing 40 : Pulley 52 : Wheel 58 : Truncated conical shaped roller.