FIELD: metallurgy.
SUBSTANCE: stamping is performed in two transitions. At the first transition the cavity in the form of a truncated cone is formed on the end of the head. Cavity has depth from 0.3 to 0.4 of height of end product head and angle of taper of 33-35 degrees. Diameter of the smaller base of the cavity is equal to 0.45-0.5 of circle diameter circumscribed around the hexagonal head of the end product. At the second transition depth of the formed cavity is brought to value not exceeding 0.6 of head height of the end product.
EFFECT: improvement of products quality and stability of stamp tool, reduction of metal consumption.
1 dwg,1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR MAKING PARTS WITH POLYHEDRAL CROSS SECTION | 2001 |
|
RU2200642C2 |
| METHOD OF FORMING POLYHEDRAL BOLT HEADS | 0 |
|
SU1764757A1 |
| METHOD OF HEADING INSERTED BOLTS WITH RADIAL TAGS, DEVICE FOR PRELIMINARY SHAPING OF TAGS AND DEVICE FOR FINAL SHAPING OF TAGS | 1999 |
|
RU2168386C1 |
| METHOD TO PRODUCE BOLTS WITH FLANGES | 2008 |
|
RU2385200C1 |
| POLYHEDRAL ARTICLES PRODUCTION PROCESS | 2003 |
|
RU2241569C2 |
| METHOD TO STAMP ROD-TYPE PIECES WITH A HEAD PROVIDED WITH RADIAL SPROUTS, A PUNCH FOR PREMOULDING THE SPROUTS OF ROD-TYPE PIECES AND A PUNCH FOR FINISHED MOULDING SPROUTS OF THE HEAD OF ROD-TYPE PIECES | 1992 |
|
RU2034677C1 |
| TOOL FOR PRODUCING BOLT HEXAHEDRON HEAD | 0 |
|
SU884819A1 |
| METHOD FOR MAKING ARTICLES SUCH AS BOLT BLANKS | 2000 |
|
RU2161082C1 |
| CLAMP BOLTS MANUFACTURING METHOD | 2006 |
|
RU2303502C1 |
| METHOD OF PRODUCING ARTICLE OF DOOR FASTENER TYPE | 2010 |
|
RU2443495C2 |
