Article positioner and method

Details Article positioner and method Article positioner and method

1987-05-18

1989-06-13

Foss, J. Franklin

Supports

Machinery support

Movable machine

248419, 248 1R, 74479, 74110, 33 1M, F16M 1112

Patent

active

048385158

ABSTRACT:
An X, Y, Z (and .theta.) article positioner and method are disclosed in which two axial elements, one inclined at an angle .alpha. and the other inclined at an angle -.alpha., are utilized in conjunction with each other to accomplish moves in a pure X or pure Z direction or a combination thereof. Each axial element is driven by a lead screw, which in turn is driven by a motor. Pure X movement is achieved by driving the lead screws the same amount, at the same rate, in the same direction. Conversely, to achieve a pure Z movement, the two lead screws are driven the same amount, at the same rate, but in opposite directions. In the preferred embodiment, three superposed and independently driven wedges are used to provide the desired single axis or combinational axis movement to position a workpiece in X, Y and Z with rotational movement of the three wedges providing .theta. axis positioning.

REFERENCES:
patent: 1006974 (1911-10-01), Moore
patent: 1092867 (1914-04-01), Sellew
patent: 1218771 (1917-03-01), Hoeschen
patent: 2248715 (1941-07-01), Mafera
patent: 2819037 (1958-01-01), Wilkin
patent: 3247598 (1966-04-01), Wilkes
patent: 3266329 (1966-08-01), Sellers
patent: 3306562 (1967-02-01), Bellefleur
patent: 4013280 (1977-03-01), Chitayat
patent: 4114845 (1978-09-01), Weisenbergen
patent: 4168574 (1979-09-01), Chase
patent: 4213509 (1980-07-01), Hafner
patent: 4436268 (1984-03-01), Schriever

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