Process and apparatus for automatically cutting out work pieces

Details Process and apparatus for automatically cutting out work pieces Process and apparatus for automatically cutting out work pieces

1974-05-07

1976-03-23

Yost, Frank T.

Cutting

Processes

With reorientation of tool between cuts

83 49, 83364, 83365, 83368, 83925CC, D06H 700

Patent

active

039452794

ABSTRACT:
Retarding markings are provided alongside a linear pattern to be cut out by an automatic device guided by a photoelectric scanner. The markings are disposed a short distance ahead of the changes in direction of the pattern line, which is greater than the resultant decelerating path of the advance motors from the original faster advance speed to the resultant slower advance speed. A timing circuit initiates the change in advance speed after the retarding mark is detected and a second timing circuit changes the overhang of the line-scanning photocells from an initial greater magnitude to the lesser required magnitude correspond to the slower advance speed. Acceleration marks may also be provided after directional changes in the pattern to accelerate the advance speed back to the original advance speed after the changes in directions are accomplished. A third timing circuit is then provided to subsequently increase the advance speed and overhang of the photoelectric cells ahead of the axis of rotation of the scanning head back to their original magnitude.

REFERENCES:
patent: 1923208 (1933-08-01), Howey
patent: 3245295 (1966-04-01), Mueller
patent: 3800650 (1974-04-01), Schroder
patent: 3838618 (1974-10-01), Eissfeldt et al.

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