Numerically controlled machine tools particularly stitching or p

Details Numerically controlled machine tools particularly stitching or p Numerically controlled machine tools particularly stitching or p

1978-07-26

1980-11-11

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

318577, 318640, G05B 1910

Patent

active

042335507

ABSTRACT:
A numerically controlled stitching machine tool comprises a head and a ta movable in relation to each other along two coordinate axes. The head is provided with a stitching needle and an optical follower placed in an invariable position in relation to the needle and receives the image of a drawing of the pattern when the drawing is placed on the table. The machine comprises, for each coordinate axis, a motor for moving the head and the table in relation to each other along that axis, transducer means for supplying an electrical signal whose amplitude depends on the movement along this axis, for A/D conversion and non-volatile storage, means for controlling the motor from the stored signals bringing into action said transducer and conversion means.

REFERENCES:
patent: 3209996 (1965-10-01), Carson et al.
patent: 3588885 (1971-06-01), Schaal et al.
patent: 3742200 (1973-06-01), Marle et al.
patent: 3936712 (1976-02-01), Gerber et al.
patent: 4002900 (1977-01-01), Kogut et al.
patent: 4081671 (1978-03-01), Bohme et al.
patent: 4136306 (1979-01-01), Westlund et al.
patent: 4144827 (1979-03-01), Brown
patent: 4150326 (1979-04-01), Engelberger et al.

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