Gleitlager und Verfahren zu dessen Herstellung

摘要

1,081,414. Bearings; lubricating. CLEVITE CORPORATION. Aug. 11, 1964 [Sept. 13, 1963], No. 32748/64. Heading F2A. A bearing for a rotatable shaft 10 comprises a housing 11 containing a cylindrical shell or so-called outer race 13 and a further cylindrical shell or so-called inner race 12 with a ring 14 of bearing material, e.g. lead oxide in a matrix of metal of the kind disclosed in Specifications 963,266 and 1,001,017, sintered iron or aluminium and aluminium alloys, therebetween, the said ring being fixed by friction relative to the shell 13 and separated from the shell 12 by a narrow annular gap that is filled with oil or grease so as to allow rotation of the shell 12 with the shaft 10. The oil or grease is supplied to said gap by wicking material 18 that fills radial slots in the ring 14 and annular spaces on either side thereof, the material being retained and protected by annular seals 20. The shell 12 may include an annular groove of arcuate shape in cross-section to render the bearing capable of carrying axial loads and partially self-aligning. The ring 14 and the shell 13 may be integral with each other, Fig. 5 (not shown). Alternatively, the ring 14 is constituted by a plurality of segments (1411), Fig. 4 (not shown). In a method of manufacturing a bearing similar to the embodiment shown, the ring 14 is compressed axially, Fig. 8 (not shown), so that it flows into the annular groove (16) in the shell 12 while the latter is mounted on a shaft (25) and the shell 13 is lodged in a chuck (26). Subsequently, the shell 12 is expanded radially, Figs. 9 and 10 (not shown), without exceeding the elastic limit thereof so as to compress the ring 14 against the other shell, and form the aforementioned annular gap when the shell 12 is thereafter permitted to restore itself to its normal dimensions, expansion being effected by a tool (31) provided with rollers (32) that are pressed outwardly against the inner surface of the shell 12 while the other shell is held in a chuck (30). Alternatively, the shell 12 is supported by a shaft (35), Fig. 11 (not shown), while the ring 14 undergoes axial compression between jaws (36, 37) and the shell 13 is subject to radial loading to effect distortion thereof by a roller (45) engaging with its outer peripheral surface, the shaft (35) and said jaws being rotated while the ring is being compressed. Distortion of the shell 13 gives rise to the afore mentioned annular gap.