Raceway ring for radial ball bearing, method of producing the raceway ring, and method and device for producing high precision ring

• Main Author: KOBAYASHI KAZUTO,OOTSUKA KIYOSHI,SHINTOU ISAO,MORI KOUHEI,YASUDA YU
• Format: Patent
• Language: English
• Published: 29.08.2007
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS; MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS,WHEELS, RINGS, BARRELS, BALLS; MECHANICAL ENGINEERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

A method of producing a raceway ring for a radial ball bearing in which the raceway ring is formed by at least either an outer ring where an outer ring raceway with a circular arc cross-section is formed as a raceway surface in an axially intermediate section of an inner peripheral surface, along the entire periphery of the outer ring, or an inner ring where an inner ring raceway with a circular arc cross-section is formed as a raceway surface in an axially intermediate section of an outer peripheral surface, along the entire periphery of the inner ring, and which radial ball bearing has balls rollably arranged between the inner ring raceway and the outer ring raceway. The method has a high precision material processing process for forming by cold working a hollow cylinder-like high precision material having substantially the same volume as the volume of the raceway ring, as a finished product, for a radial ball bearing and has a raceway ring processing process for forming the raceway ring in the axially intermediate section of either of the peripheral surfaces by plastically deforming the high precision material by cold working, and the method does not perform processing for removing a material at least before heat treatment.