| 摘要 |
1,149,712. Grinding. SVENSKA KULLAGERFABRIKEN A.B. 12 Jan., 1967 [14 Jan., 1966], No. 1810/67. Heading B3D. A method of honing a surface of a groove 12 in an annular ring 10 of a rolling bearing comprising spinning the ring about the axis of revolution of the groove, urging an abrasive body 41 against the groove, and vibrating the body in the direction in which it is urged. The ring is mounted with freedom to rotate on an arbor 18 non-rotatably carried by a tailstock 20 but axially movable by an air cylinder to move the ring from a loading to an operating position. The arbor carries a pair of ball bearings 23, 24 against which the ring is pressed by a friction disc 30 rotated from a motor 36. The abrasive body 41 has a lower surface conforming to the groove 12 and is cemented to a holder 48 on a horn 46 attached to a piezoelectric or magnetostrictive vibrator 43 operative between 5000 and 30,000 cycles/second to produce cavitation in liquid, such as kerosene, supplied to the ring from a pair of nozzles. The vibrator can be raised or lowered and the force of the body 41 against the groove controlled by pneumatic pressure. The body 41 may be a sulphur treated silicon carbide stone and is initially shaped by a previously-formed ring mounted on the arbor 18. In an arrangement for honing the inner groove of the outer ring of a ballbearing assembly, the ring is mounted in a chuck and the stone is carried by a right-angled lever secured to the horn. |
