B - Operations – Transporting – 21 – C
Patent
B - Operations, Transporting
21
C
80/26, 341/42, 8
B21C 3/08 (2006.01) B21B 37/24 (2006.01) B21C 3/06 (2006.01) B21B 1/16 (2006.01) B21B 15/00 (2006.01) B21B 38/04 (2006.01) B21B 38/10 (2006.01) B21B 39/06 (2006.01)
Patent
CA 1140237
ABSTRACT OF THE DISCLOSURE Method for manufacturing long bars, round, square or flat, employing multi-tandem type roller dies mechanism in which each roller gap is controlled by the roller gap adjusting mecha- nism, and apparatus preferably applicable that method. The apparatus is provided with a plurality sets of roller dies, controllers for outputting a respective target roller gap for each roller dies, roller adjusting mechanisms capable of shift- ing, in accordance with the commanding signals from servo devices based on the output target roller gap, each roller of each set of roller dies symmetrically about the axial line of the die hole formed by the roller dies, roller position sensors for measuring the respective roller gap in order to feed back the measured results to the servo devices, and a propelling mechanism for imparting a deformable blank propelling force. The apparatus may be additionally provide with a dimension measuring device for, on the outlet side of the last set of roller dies, measuring the sectional dimension of the processed bar for permitting rec- tification of the roller gap of the roller dies by feeding back the measured results. The apparatus may be further added a distance of movement measuring device for measuring the distance of movement in the longitudinal direction of the processed bar for being able to gradually vary the roller gap of the roller dies in response to the distance of movement measured, by which the apparatus can be utilized for the manufacturing of tapered bars.
318659
Furuta Osamu
Hasegawa Yoshimichi
Nakamura Hideo
Shinta Jouji
Aichi Steel Works Limited
Borden Ladner Gervais Llp
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