BUILT-UP BLANKS OF BIMETALLIC ARTICLES CALIBRATION APPARATUS Russian patent published in 2008 - IPC B23K20/02 B21C23/22 

FIELD: plastic working of metals, possibly manufacture of bimetallic articles having blank of envelope with bottom portion, blank of core and bottom portion with cylindrical part.

SUBSTANCE: apparatus includes hydraulic press with control system, unit for calibrating built-up blanks and pneumatic cylinder with control system. The last includes compressed air distributor, two pneumatic throttles and additional switch. The last is electrically connected with compressed air distributor and it is connected between limit switches of press control system. Calibration apparatus includes mounted on table of press: housing, lower die, stripper, guiding sleeve and punch mounted in movable plate of press. Pneumatic cylinder is mounted in lower part of press housing port coaxially to slide. Rod of pneumatic cylinder moves through working table of press, through stripper and lower die of calibration apparatus. Detachable tip is secured to end of said rod and it has flat end with land whose diameter is no less than diameter of cylindrical part of bottom portion of built-up blank.

EFFECT: improved quality of produced articles.

3 dwg