DEVICE FOR MANUFACTURE OF FLYING VEHICLE MAIN FRAME PANEL Russian patent published in 2003 - IPC

FIELD: aircraft manufacture; manufacture of main frame panel from titanium or its alloys. SUBSTANCE: proposed device includes four pins forming caliber. Two inclined pins are mounted for synchronous motion towards each other in vertical plane by means of eccentrics of drive shafts. Two other side pins perform reciprocating motion in horizontal plane by of other eccentrics of drive shafts. Eccentrics actuating side pins are turned through angle of 90 deg. relative to eccentrics actuating inclined pins. Side pins are rounded-off at outlet at radius corresponding to radius of finished panel of main frame. Side pins are provided with hold-downs to avoid loss of stability of strip being bent. EFFECT: improved quality of article. 3 cl, 4 dwg