Abstract: Cam follower includes a cantilevered stud, and a bearing unit mounted on a head portion of the stud and having rollers and an outer ring. The outer peripheral surface of the outer ring constitutes a cam-driven surface. The cam-driven surface includes a central load-bearing region substantially parallel to the axis of the cantilevered stud, and a couple of load-reducing bearing regions indented radially inward from the central load-bearing region and located on opposite sides of the central load-bearing region axially symmetrically to each other. Mechanical stress acting on the inner surface of the outer ring, outer surface of the roller and outer surface of the stud's head portion presents a maximum intensity level at their respective points corresponding to a point of the outer ring which is subjected to maximum mechanical contact stress from a cam.

Abstract: Cam follower includes a cantilevered stud, and a bearing unit mounted on a head portion of the stud and having rollers and an outer ring. The outer peripheral surface of the outer ring constitutes a cam-driven surface. The cam-driven surface includes a central load-bearing region substantially parallel to the axis of the cantilevered stud, and a couple of non-load-bearing regions indented radially inward from the central load-bearing region and located on opposite sides of the central load-bearing region axially symmetrically to each other. Mechanical stress acting on the inner surface of the outer ring, outer surface of the roller and outer surface of the stud's head portion presents a maximum intensity level at their respective points corresponding to a point of the outer ring which is subjected to maximum mechanical contact stress from a cam.

Abstract: Two cam-bearing holders of an indexing drive are bolted to opposed side walls of a housing in such a way that respective positions of the cam-bearing holders are adjustable in a plane orthogonal to an axial direction of the cam shaft along the side walls. Each of the cam-bearing holders has a first reference surface for positioning the cam-bearing holder relative to a positioning reference surface of the output shaft in the axial direction of an output shaft and a second reference surface for positioning the cam-bearing holder in a direction orthogonal to the axial direction of the output shaft. With such novel arrangements, there is achieved an improved cam-positioning mechanism for the indexing drive which can accurately adjust a meshing engagement between the cam and roller followers of the output shaft and thereby allows the indexing drive to be assembled with greatly increased accuracy.

Abstract: A fastener for securing a wheel to a shaft comprises a first ring having a cylindrical central opening. The first ring includes a radially extending portion having for engaging one side of the wheel. A boss having a tapered outer surface extends axially from the radially extending portion, and the central opening extends through the radially extending portion and through the boss. The fastener also includes a second ring for engaging the opposite side of the wheel, and a third ring having an inner surface engageable with the tapered outer surface of the boss of the first ring. Bolts connectable to the second and third rings urge the second and third rings axially toward each other whereby the second ring is urged against said opposite side of the wheel so that the wheel is axially pressed between the first and second rings, and the inner cylindrical surface of the boss is radially pressed against the shaft.

Abstract: An intermittent driving apparatus having input and output shafts disposed in perpendicular but nonintersecting relationship, and joined together by an intermittent drive coupling for transmitting rotation of the input shaft intermittently to the output shaft. The input shaft extends through an eccentric opening formed on a ring which is disposed within an opening formed in the housing. The ring can be angularly adjusted relative to the housing to vary the position of the axis of the input shaft. The ring is fixed to the housing by a securing pin, and a ring-shaped cover is press-fit into the angular gap between the ring and the housing.