Machine element or mechanism – Elements – Cranks and wrist pins
Patent
1988-12-28
1990-09-11
Hornsby, Harvey C.
Machine element or mechanism
Elements
Cranks and wrist pins
74571L, 74571R, 100257, 100282, 100292, G05G 100, B30B 500, B30B 106
Patent
active
049552546
ABSTRACT:
An eccentricity control device, suitable for use as a slide stroke control device in a press, has a rotary shaft including an eccentric member mounting portion, and an eccentric member mounted on the eccentric member mounting portion. The eccentric member has an outer peripheral surface which is at an eccentricity from the axis of the rotary shaft and sliding surfaces which are held in sliding engagement with both side surfaces of the eccentric member holding portion of the rotary shaft. A screw rod is screwed into the eccentric member mounting portion and extends through the eccentric member mounting portion in a direction perpendicular to the axis of the rotary shaft. The screw rod has both ends rotatably supported by the eccentric member such that a rotation of the screw shaft causes the eccentric member to move in the axial direction of the screw rod together with the screw rod, thereby causing a change in the amount of eccentricity of the outer peripheral surface of the eccentric member with respect to the axis of the rotary member.
REFERENCES:
patent: 1788071 (1931-01-01), Strout
patent: 2310209 (1943-02-01), Bousman
patent: 2594836 (1952-04-01), Wunderlich et al.
patent: 3196802 (1965-07-01), Matheny
Gerrity Stephen F.
Hornsby Harvey C.
Sankyo Manufacturing Company Ltd.
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