Method for controlling the position of the cutting edges of long

Details Method for controlling the position of the cutting edges of long Method for controlling the position of the cutting edges of long

1985-05-08

1986-06-03

Yost, Frank T.

Cutting

Processes

83 71, 83499, 835083, B26D 124

Patent

active

045922594

ABSTRACT:
A method for positioning coacting circular cutting blades in a slitting device for a web of material characterized by moving the pair of blades which are mounted on separate carriages along rails extending transverse to the direction of movement of the web being cut to a predetermined position, and locking the carriages of the blades in this predetermined position with the method including compensating for changes in the width of the cutting blade due to sharpening and grinding by measuring the distance of the cutting edge of the blade from a bench mark on the carriage, comparing this distance to a standard to form an offset amount and using the offset amount to correct the amount of movement of the carriage so that the blades are positioned on the desired cutting line. The invention is also directed to the apparatus of a web slitting device having an arrangement of sensors to determine the distance of the cutting edge of the blade from a bench mark on the carriage for the blade and utilizing this distance to determine the offset amount used in positioning the carriage.

REFERENCES:
patent: 3176566 (1965-04-01), Patterson, Jr.
patent: 3886833 (1975-06-01), Gunn et al.
patent: 4072887 (1978-02-01), Buschmann et al.
patent: 4188846 (1980-02-01), Jones et al.
patent: 4283981 (1981-08-01), Trautmann
patent: 4380945 (1983-04-01), Guild et al.

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