| 摘要 |
A ball-type constant velocity universal joint has a plurality of axially extending circumferentially spaced tracks in its inner and outer joint members. Balls in a ball cage engaged between the tracks of the inner and outer members. Runouts or extensions of the ball tracks are under load in a deflected position of the joint, and deviate in an asymmetrical manner from each other in cross-section, in an undeflected position of the joint, with reference to the center point of a ball in that track. This makes it possible in a preferred manner to fabricate the ball tracks of the one joint member which is free of undercuts, by means of a non-cutting shaping process, and to fabricate the ball tracks in the other joint member which is uniformly curved by a cutting machining process, particularly by grinding with swivelling motion of the joint member. Thus, high fabrication accuracy of an entire series of joints can be achieved also in case of large tolerances in the fabrication of the ball tracks of the one joint member produced by non-cutting fabrication. This high fabrication accuracy can be achieved by individual grinding of the ball tracks of the second joint member.
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