Method of controlling the deceleration of a reversing mill

Details Method of controlling the deceleration of a reversing mill Method of controlling the deceleration of a reversing mill

1978-07-31

1980-11-04

Gruber, Felix D.

Boots, shoes, and leggings

72 11, 72 14, 364472, G06F 1546, G05B 1500, B21B 3700

Patent

active

042323690

ABSTRACT:
A method embodying this invention for controlling the deceleration of a reversing mill comprises a first step of defining a kickout distance in consideration of the bite speed at which a piece is caught by the main mill roll unit during every return roll pass of a piece-reciprocating operation and the kind of work carried out while the piece is made to rest during an interval between the respective roll passes; a second step of calculating the kickout speed to define the kickout distance; a third step of selecting that one of a plurality of piece position sensors arranged on the bite side of a main mill roll unit which takes the nearest upstream position relative to a mill deceleration-starting point in order to realize the calculated kickout speed; and a fourth step of figuring out a length of time required for the piece to move from the selected piece position sensor to the mill deceleration-starting point, thereby controlling the reversing mill so as to start the deceleration of the piece after lapse of said calculated travelling time of the piece.

REFERENCES:
patent: 3136183 (1964-06-01), Dart
patent: 3518857 (1970-07-01), Hancock et al.
patent: 3543548 (1970-12-01), Smith, Jr.
patent: 3553992 (1971-01-01), Harbaugh
patent: 3651676 (1972-03-01), Robertson
patent: 4106318 (1978-08-01), Yanagimoto et al.

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