B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 22/28 (2006.01) B21D 37/16 (2006.01) B21D 51/26 (2006.01)
Patent
CA 2218144
In this process it is proposed, in order to improve the tool life and compensate for wear and hence to improve the number of cycles in stamping machines, to alter the controlled temperature (4, 5, 4a, 21, 22, 6 ,8 ) of the stamping die (1, 2) and/or at least one of the stamping rings (10a, 10b, 10c). The proposal here is for both the process and the temperature-controllable stamping device. The process and the device provide stamped can bodies with a constant sheet metal gauge despite the wear on the tool or in which the sheet metal gauge can be controlled with the same tool.
L'invention concerne un procédé visant à accroître la durée d'utilisation de l'outillage et à compenser l'usure et par conséquent à augmenter le nombre de cycles de machines d'étirages. A cet effet, on propose de faire varier de façon contrôlée (4, 5, 4a, 5a, 21, 22, 6, 8) la température du mandrin d'étirage (1, 2) et/ou au moins de l'un des anneaux d'étirage (10a, 11b, 10c). L'invention concerne non seulement ledit procédé mais aussi le dispositif d'étirage thermorégulé. Ce procédé et ce dispositif permettent d'obtenir des corps de boîtes étirés présentant une épaisseur de tôle constante en dépit de l'usure de l'outillage ou présentant une épaisseur de tôle pouvant être modifiée sans changer d'outillage.
Buse Dieter
Grandmann Willi
Marks & Clerk
Schmalbach-Lubeca Ag
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