FIELD: plastic metal working, namely cold sheet forming.
SUBSTANCE: for finish blanking of parts having complex configuration with protrusions with use of squeezing tool, female die is used with blunted or rounded cutting edges. Edges are blunted or rounded along not the whole perimeter of die but only near its upper edges forming apexes of part protrusions. Stressed state of multi-side non-uniform compression is created in upper zone of part protrusions. Apparatus includes punch, holder, counter-punch and die with edges blunted only near its apexes forming upper zone of part protrusions.
EFFECT: improved quality of cut surfaces.
3 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF FINISH CUTTING WITH REDUCTION | 2008 |
|
RU2409444C2 |
| METHOD OF PRODUCING PARTS BY BENDING FROM BILLETS OBTAINED BY FINISH CUTTING | 2009 |
|
RU2437735C2 |
| DIE FOR FINISH PUNCHING-OUT ARTICLES FROM SHEET MATERIALS | 0 |
|
SU725749A1 |
| DIE SET FOR CLEAN CUTTING-OUT | 0 |
|
SU673352A1 |
| FINISH BLANKING METHOD | 2000 |
|
RU2179902C2 |
| METHOD OF FINISH BLANKING OF PARTS FROM SHEET MATERIAL | 0 |
|
SU1018756A1 |
| DIE FOR FINISH PUNCHING-OUT OF PARTS FROM SHEET WORK | 0 |
|
SU640790A1 |
| DIE FOR WORKING PACKS OF WORKPIECIES | 0 |
|
SU776916A1 |
| DIE SET CLEAN CUTTING-OUT | 0 |
|
SU662207A1 |
| DIE FOR BLANKING PARTS FROM METALLIC BLANK AND PUNCHING HOLES | 0 |
|
SU1032994A3 |
