FIELD: plastic metal working, namely forming stepped rod-type fastening parts such as bolts with high neck. SUBSTANCE: rod-type blank with solid cross section is placed in sizing hole of lower die-half and in hexagonal recess of upper die-half. In bottom portion of said hexagonal recess there is sizing groove for fixing end of blank. Die-halves are drawn together to form hexagonal head and neck of bolt. Said neck is formed by two stages. At first stage hexagonal head and neck with diameter equal to that of bolt head are formed. At second stage said neck portion is upset for forming final-dimension neck. EFFECT: enhanced efficiency. 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING ROD WITH BULGE | 2015 |
|
RU2596511C1 |
| METHOD OF HEADING INSERTED BOLTS WITH RADIAL TAGS, DEVICE FOR PRELIMINARY SHAPING OF TAGS AND DEVICE FOR FINAL SHAPING OF TAGS | 1999 |
|
RU2168386C1 |
| METHOD FOR MAKING BALL PINS | 2002 |
|
RU2238167C2 |
| METHOD OF UPSETTING PARTS SUCH AS RODS WITH HEAD AND POLYHEDRAL UNDER HEAD PORTION | 1991 |
|
RU2010663C1 |
| HOLLOW HEAD ROD-LIKE ARTICLES MANUFACTURING METHOD | 0 |
|
SU1641496A1 |
| METHOD OF MAKING ROD-TYPE FASTENING MEMBER WITH HEAD | 1996 |
|
RU2092267C1 |
| DEVICE FOR MAKING A ROD WITH THICKENINGS | 2021 |
|
RU2773178C1 |
| METHOD FOR PRODUCING ROD-TYPE ARTICLES WITH HEXAGONAL HEAD | 2016 |
|
RU2635495C1 |
| METHOD OF MAKING ROD PRODUCTS, HAVING END FLANGE AND BEAD IN THEIR MEAN PORTION AND APPARATUS FOR PERFORMING THE METHOD | 1992 |
|
RU2041007C1 |
| DEVICE FOR EXTRUSION OF BULBS ON BAR STOCKS | 2006 |
|
RU2344896C2 |
