Multi-stage Geneva mechanism

Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position

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74 84R, B23Q 1700, F16H 2706

Patent

active

042827787

ABSTRACT:
A multi-stage Geneva mechanism comprises first and second Geneva mechanisms and a constant speed ratio drive, such as a gear train, interconnected between the Geneva mechanisms. An adjustment mechanism is connected to the gear train to selectively adjust the phase angle between a crank and wheel of the second stage Geneva mechanism, on the output side of the system. Selective change of such phase angle enables the operator to fine-tune the indexing time to accommodate more precisely the requirements of an automated production line.

REFERENCES:
patent: 2235047 (1941-03-01), Sloan
patent: 2605647 (1952-08-01), Duvoisin
patent: 2769379 (1956-11-01), Perry
patent: 3279281 (1966-10-01), Anderson et al.
patent: 3448624 (1969-06-01), Brown
patent: 3590660 (1971-07-01), Chaveneaud
patent: 3750494 (1973-08-01), Rice
"Synthesis of Double-Crank (Drag-Link) Driven Mechanisms With Adjustable Motion and Dwell Time Periods", Cemil Bagci, Mechanisms and Machine Theory, 1977, vol. 12, pp. 619-638.
"Angular Relationships of a Geneva Mechanism During Indexing Movement", Sol Dudnick, Machine Design (Updated).
"Geneva Mechanisms Connected in Series", Journal of Engineering For Industry, 5-1975, R. G. Fenton, pp. 603-608.
"Linkage-Geneva Mechanisms: A Design Study in Mechanism Geometry", K. H. Hunt et al., Proc. Inst. Mech. Engrs., Feb. 1960.
"How To Design Geneva Mechanisms", Ray C. Johnson, Machine Design, 1956, pp. 107-111.
"Intermittent Mechanisms", Guy J. Talbourdet, Machine Design, 1950.

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