Material or article handling – Load carried along a horizontal linear path – Carried via magnetic floating
Patent
1990-01-16
1991-10-22
Spar, Robert J.
Material or article handling
Load carried along a horizontal linear path
Carried via magnetic floating
414778, 414917, 269 73, B23Q 700
Patent
active
050590901
ABSTRACT:
A two-dimensional positioning mechanism, comprising a moveable platform, a first translating device connected to the platform to move the platform in a first direction, and a second translating device connected to the platform to move the platform in a second direction orthogonal to the first direction. The first translating device includes first and second links, each of which is pivotally connected to the platform, and a first linear actuator pivotally connected to the first and second links to move those links in the first direction. The first and second links, the moveable platform and the linear actuator form a pivotal parallelogram structure to maintain the orientation of the platform substantially constant during movement thereof. Preferably, the positioning mechanism further includes a control system connected to the first and second translating devices to control those translating devices to move the platform from a first position to a second position. This control system preferably also controls the translating devices to move the platform on a predetermined path as the platform moves from one position to the next.
REFERENCES:
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patent: 2244215 (1941-06-01), Pescara
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IBM Technical Disclosure Bulletin, vol. 30, No. 5, Oct. 1987, pp. 299-300, "High Speed Micro-Positioner".
Bobroff Norman
Kendall Rodney A.
International Business Machines Corp.
Spar Robert J.
Underwood Donald W.
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