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A two-step roller finger follower includes an elongate body having a first side member and a second side member. A first end and a second end interconnect the first and second side members. The first and second side member define first and second pin orifices, respectively. A center roller is dispos

A two-step roller finger follower includes an elongate body having a first side member and a second side member. A first end and a second end interconnect the first and second side members. The first and second side member define first and second pin orifices, respectively. A center roller is disposed between the first and second side members. The center roller defines a shaft orifice therethrough. A shaft extends through the shaft orifice. A first shaft end is disposed proximate the first side member, and the second shaft end is disposed proximate the second side member. The second shaft end defines a shaft bore therein. The first shaft end defines a pin chamber therein. The shaft bore being is substantially concentric with and intersects the pin chamber. A locking pin assembly is disposed partially within the shaft bore, the pin chamber and at least one of the pin orifices. The locking pin assembly has a first position wherein the shaft is decoupled from the body and a second position wherein the shaft is coupled to the body, and is switchable between the first and second positions.

대표청구항 ▼

A two-step roller finger follower includes an elongate body having a first side member and a second side member. A first end and a second end interconnect the first and second side members. The first and second side member define first and second pin orifices, respectively. A center roller is dispos

A two-step roller finger follower includes an elongate body having a first side member and a second side member. A first end and a second end interconnect the first and second side members. The first and second side member define first and second pin orifices, respectively. A center roller is disposed between the first and second side members. The center roller defines a shaft orifice therethrough. A shaft extends through the shaft orifice. A first shaft end is disposed proximate the first side member, and the second shaft end is disposed proximate the second side member. The second shaft end defines a shaft bore therein. The first shaft end defines a pin chamber therein. The shaft bore being is substantially concentric with and intersects the pin chamber. A locking pin assembly is disposed partially within the shaft bore, the pin chamber and at least one of the pin orifices. The locking pin assembly has a first position wherein the shaft is decoupled from the body and a second position wherein the shaft is coupled to the body, and is switchable between the first and second positions. both sides and in an adjacent land; and e) turning the outer contour to final dimensions. 14. A method as defined in claim 11, wherein, for an outer ring with a finish-ground circumferential surface, a sequence of the following individual steps is carried out: a) simultaneous facing and bolting of both the end faces; b) tracing an inner contour of a running surface for roughing the inner contour; c) tracing the inner contour of the running surface for smoothing the inner contour; and d) simultaneously following outer contours on both sides in a region where edges are shortened and simultaneously recessing a groove in a cover plate on both sides and in an adjacent land. 15. A method as defined in claim 13, wherein machining takes place axially and radially in a concomitant manner in steps b), c), d). 16. A method as defined in claim 14, wherein machining takes place axially and radially in a concomitant manner in steps b), c), d). 17. A method as defined in claim 9, including supplying a lubricant in a pulsed manner only during machining. 18. A method as defined in claim 17, wherein the lubricant is a mixture of compressed air and drilling emulsion, the drilling emulsion being added to the compressed air drop by drop. 19. A method as defined in claim 1, including, after the hot-cutting, heat treating the blank ring and subsequently machining the hardened blank ring. 20. A method as defined in claim 2, including, after the punching and pressing operation, subjecting the blank ring to a heat treatment and subsequently finish-machining the ring. 21. A method as defined in claim 17, wherein the further cold processing is at least one of a hard turning and a hard grinding operation. 22. A method as defined in claim 1, including, after cooling, firstly stress-relief annealing the hot-rolled tubes, then straightening and non-destructively testing the tubes for defects before hot-cutting. 23. A method as defined in claim 22, wherein the step of non-destructively testing the tubes includes ultrasonic testing for longitudinal and transverse defects. 24. A method as defined in claim 1, including, after the further