Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1978-01-12
1980-09-30
Dorner, Kenneth
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
74 70, F16H 3712
Patent
active
042248302
ABSTRACT:
There is disclosed herein a mechanical motion control mechanism which in one form may comprise an input shaft drivingly connected to an output shaft in such a manner that continuous rotation of the input shaft produces varying rotational movement of the output shaft characterized by an initial dwell period, an acceleration period, a constant velocity period, a deceleration period and another dwell period. The input and output shafts may be drivingly connected by means of a gear secured to the input shaft which is in meshing engagement with a second gear supported at one end of a pivot arm, the other end of which is secured to the output shaft. Rotational and revolving movement of this second gear is controlled by the interaction of a plurality of cam followers engaging a cam surface so as to allow rotational, revolving, and various desired combinations of such movements in response to rotational movement of the first gear. Alternatively, the input and output shafts may be drivingly connected by sprockets in place of the first and second gears with an interconnecting drive chain, belt or other similar devices. Also, if desired, the first and second gears may be replaced with wheels having circumferential frictional surfaces in mutual driving engagement. In yet another embodiment the input and/or output may be in the form of linear motion in which case the first gear may be replaced with a rack engaging the second gear in such a manner as to produce the above movement period sequence.
REFERENCES:
patent: 1727194 (1929-09-01), Belin
patent: 1916871 (1933-07-01), Swift, Jr.
patent: 2866353 (1958-12-01), Ewing
patent: 4018090 (1977-04-01), Brems
patent: 4089228 (1978-05-01), Obra
Dorner Kenneth
Expert Automation, Inc.
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