FIELD: plastic metal working, namely manufacture of shaped tools such as punches for forming screws and wood screws with cross-like slot. SUBSTANCE: method comprises steps of upsetting initial cone blank for making preliminary blank with working end portion in the form of truncated cone whose generatrix inclination angle relative to blank axis is more than that of initial blank. Then end working surface of tool body is shaped at simultaneously forming extension of tool in the form of slot impression. EFFECT: improved design. 2 cl, 4 dwg
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Authors
Dates
1998-04-10—Published
1996-06-26—Filed