Für eine niedrige Biegekraft empfindliche Handhabevorrichtung

A tactile pick includes a base and a lever attached beneath the base by a pivot. A load sensing device including a strain gauge is located between the base and the portion of the lever on one side of the pivot; the portion of the lever on the other side of the pivot is adapted to receive a semicondu...

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Bibliographic Details
Main Authors KLOS, LEO V., NEWBURYPORT, MA 01950, US, HERTEL, RICHARD J., BRADFORD, MA 01830, US
Format Patent
LanguageGerman
Published 08.09.1994
Edition5
Subjects
BASIC ELECTRIC ELEMENTS
CHAMBERS PROVIDED WITH MANIPULATION DEVICES
CONVEYING
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
HAND TOOLS
HANDLING THIN OR FILAMENTARY MATERIAL
MANIPULATORS
PACKING
PERFORMING OPERATIONS
PNEUMATIC TUBE CONVEYORS
PORTABLE POWER-DRIVEN TOOLS
SEMICONDUCTOR DEVICES
SHOP CONVEYOR SYSTEMS
STORING
TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING
TRANSPORTING
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Summary:A tactile pick includes a base and a lever attached beneath the base by a pivot. A load sensing device including a strain gauge is located between the base and the portion of the lever on one side of the pivot; the portion of the lever on the other side of the pivot is adapted to receive a semiconductor wafer. Rotation of the lever about the pivot induced by the weight of a wafer causes an actuator to depress a flexible member on which a strain gauge is mounted. The output signal of the strain gauge is processed by a controller to provide an output signal which varies monotonically with the magnitude of the weight placed on the wafer receiving portion of the lever. The pick is employed in connection with the wafer transport system which transfers wafers from a cassette to the pick lever.
Bibliography:Application Number: DE19883889686T