FIELD: plastic metal working, namely sheet forming procedures.
SUBSTANCE: method comprises steps of cutting out blank along contour and simultaneously bending and sizing blank on rigid mandrel; performing sizing of blank at the end of bending step; during steps of cutting out and bending blank passing through it electric current pulse. All those operations are performed in apparatus having punch-die and clamping stripper, both mounted on upper plate and rigid mandrel mounted in lower plate. Clamping stripper is made of electrically non-conducting material and it is provided with electric current supply terminals for passing electric current pulse through blank along axis of bending it. Electric current supply terminals are arranged at both sides in symmetry plane of punch-die.
EFFECT: prevention of cracking in zone of contact of bending surfaces of punch-die.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DIE FOR BLANKING AND BENDING STRIP MATERIAL PARTS | 0 |
|
SU931262A1 |
| METHOD OF PROGRESSIVE FORMING | 0 |
|
SU1801678A1 |
| COMBINED -ACTION DIE SET | 0 |
|
SU697229A1 |
| ARRANGEMENT FOR MANUFACTURING HOLLOW ARTICLES FROM STRIP AND BAND MATERIAL | 0 |
|
SU1204302A1 |
| COMPOUND DIE | 0 |
|
SU871913A1 |
| COMPOUND DIE | 2000 |
|
RU2207929C2 |
| DIE FOR HIGH-SPEED BLANKING OF PARTS | 0 |
|
SU902924A1 |
| COMPOUND DIE FOR BLANKING AND BENDING WORKS FROM STRIP MATERIAL | 0 |
|
SU871911A1 |
| DISK-SPRING MAKING DIE | 0 |
|
SU721184A1 |
| METHOD OF PRODUCING BENT PARTS | 0 |
|
SU1400726A1 |
