| 摘要 |
PCT No. PCT/GB97/02980 Sec. 371 Date Jan. 6, 1999 Sec. 102(e) Date Jan. 6, 1999 PCT Filed Oct. 29, 1997 PCT Pub. No. WO98/19073 PCT Pub. Date May 7, 1998A fixed, ball-type constant velocity joint includes an outer member (10) having ball-receiving tracks (17) and lands (18) between the tracks. The lands engage the external surface (21) of a cage (12) and are provided with relief portions (25) which extend across the whole circumferential widths of the lands. The relief portions are located between first and second contacting portions of the external cage surface and the facing land surfaces. The provision of the relief portions facilitates the formation of the land surfaces by reducing the area which has to be accurately shaped. The lands are hardened but before hardening may be provided with the relief portions (25). After hardening no treatment to remove metal is applied to the surfaces in which a relief portion has been provided except, optionally, for the removal of scale produced by
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