FIELD: process engineering.
SUBSTANCE: invention relates to machine building and can be used for broaching, mainly, of small-diameter holes in metal blanks. Electrode-tool comprises metal working part with working and process ends that allow the feed of working fluid to broaching zone. Besides, it includes dielectric guide to be displaced along metal working part. Said guide has lengthwise grooves, one allows feeding of said working fluid to working end in broaching zone via hydraulic manifold, branch pipe and opening in metal working part. One or several grooves are designed to allow a complete evacuation of working fluid on working end side from broaching zone as well as broaching products via skews made opposite said grooves in dielectric guide. Note here that ledges are made on dielectric guide inner surface on process end side to shutoff escape of said fluid from said grooves towards process end.
EFFECT: higher precision and quality of surface layer irrespective of broaching depth.
4 dwg, 1 ex
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