Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1989-09-11
1991-02-19
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
74569, F16H 5308
Patent
active
049932756
ABSTRACT:
A cam mechanism for periodically swiveling a swivel device includes a rotatable first cam disk carrying a first cam serving as a main cam, a rotatable second cam disk carrying a second cam serving as an auxiliary cam, a first roller engaging the first cam under spring force and rollable on the first cam during rotation of the first cam disk, a second roller engaging the second cam under spring force and rollable on the second cam during rotation of the second cam disk, and a lever arrangement swivelable by the two rollers and having at least one spring for providing the spring force, including a swivel lever swivelable about a swivel axis and carrying the first roller, a swiveling movement corresponding to the first cam being impresable by the swivel lever upon the swivel device, the swivel axis and the two rollers having axes of rotation extending parallel to one another, and normals to the axes of rotation of the two rollers intersecting one another on the axis of rotation of the swivel axis and forming and angle .alpha. which is a measure for the spring force under which the two rollers engage the two cams, the auxiliary cam having a contour for varying the angle .alpha. as a function of inertial forces resulting, respectively, from accelerations and decelerations of the lever arrangement and of machine parts connected therewith during rotation of the two cam disks.
REFERENCES:
patent: 978783 (1910-12-01), Rose
patent: 1227812 (1917-05-01), MacPherson
patent: 2426036 (1947-08-01), Lyham
patent: 3116923 (1964-01-01), Gunther
patent: 4301696 (1981-11-01), Andersson
patent: 4583728 (1986-04-01), Mathes
German Reference Feinwerktechnik+Micronic, 78, 1974 Book 1 (J. Peczkowski) "Kurvenscheibengtriebe", pp. 29-35; the entire document is pertinent.
Lorenz Roland
Pollich Gerhard
Thunker Norbert
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Herrmann Allan D.
Lerner Herbert L.
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