FIELD: process engineering.
SUBSTANCE: invention relates to metal forming and may be used in producing drive chain rollers used in whatever industry. Blank cut of bar, heat treated and lubed, is deformed by two make dies in female die to make hollow cylinder with web. One male die has flat working end to create flat surface of said web. Second male die has flat-cone working end to create a recess shaped to truncated cone on web opposite surface. Said web is remove by cutting out. Conical ledge is arranged on cylinder inner wall to be squeezed into the wall in further roller calibration. Ledge volume exceeds that of formed defects after web cutting out on outer surface of semi-finished product.
EFFECT: higher quality of articles and efficiency of their production.
5 cl, 3 dwg
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