System for preventing the collision of two cutting tools

Details System for preventing the collision of two cutting tools System for preventing the collision of two cutting tools

1989-03-22

1991-02-19

Phan, Hien H.

Boots, shoes, and leggings

83 74, 83177, 83526, 83940, 83 621, 3644742, B26D 500, B23Q 15007

Patent

active

049949799

ABSTRACT:
A system for preventing the collision of two cutting tools in a computer-controlled cutting unit in which the two cutting tools may at times be moved toward each other. This system determines the actual position of each cutting tool during the cutting process. The distance between the two cutting tools is determined and is compared with a previously specified tolerated separation by means of a comparator in the computer. As soon as the tolerated separation has been reached, the system shuts off the cutting unit. In addition, an electrical safety circuit prevents the cutting unit from starting up again automatically after an automatic shutdown.

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patent: 4651601 (1987-03-01), Sasaki
patent: 4736661 (1988-04-01), Shirai
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