FIELD: machine building.
SUBSTANCE: invention relates to machine building, particularly, to production of bicycle forged frames. Method of bicycle forged frame manufacturing is characterized by that mold is installed in press die. Blank of sheet material is installed between mating parts of mold. Press die is actuated and a punching operation is performed, at which simultaneously blanking and deformation of the sheet material billet is performed in compliance with the mold. Frame workpiece side parts are bent so that carriage holes and brackets for attachment of rear wheel axle are aligned relative to each other, and rounding on tip of lobes makes steering barrel.
EFFECT: higher efficiency of bicycle frame manufacturing.
6 cl, 11 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| BICYCLE FRAME | 2014 |
|
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SU1763283A1 |
| VELOCAR | 1999 |
|
RU2161577C1 |
| BICYCLE FRAME COMPONENT, BICYCLE FRAME AND BICYCLE | 2015 |
|
RU2671461C2 |
