Shuttle transfer with linear Transducer feedback

Details Shuttle transfer with linear Transducer feedback Shuttle transfer with linear Transducer feedback

1995-05-19

1996-04-30

Underwood, Donald W.

Material or article handling

Load carried along a horizontal linear path

Carried via magnetic floating

901 9, 901 16, 901 23, 901 47, B25J 916

Patent

active

055119336

ABSTRACT:
A shuttle transfer assembly (10) is able to accurately position a workarm (12) in two axes (X, Y) to a selected coordinate position. The assembly (10) include two position controllers (74, 76) each operating along a single axis for positioning the workarm (12) to the coordinate position. A central controller (86) functions to control the sequencing of the separate position controllers (74, 76). Coarse and fine sensors (62-68) are provided to allow feedback of position to the position controllers (74, 76). The coarse sensor (62, 64) operates for general positioning as an encoder on the servo drive motor. The fine sensors (66, 68) extend from the workarm (12) to produce the final, high resolution positioning.

REFERENCES:
patent: 3819902 (1974-06-01), Sidbeck et al.
patent: 3884363 (1975-05-01), Ajlouny
patent: 4205217 (1980-05-01), Araya
patent: 4319864 (1982-03-01), Kaufeldt
patent: 4600358 (1986-07-01), Graf
patent: 4836111 (1989-06-01), Kaufmann
patent: 4843708 (1989-07-01), Yokoi et al.
patent: 4907169 (1990-03-01), Lovoi
patent: 5180979 (1993-01-01), Frazzini et al.

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