APPARATUS FOR STATIC-PULSE MILLING OF SPHERICAL SURFACE BY MEANS OF NEEDLE MILLING CUTTER Russian patent published in 2008 - IPC B23C3/00 

FIELD: manufacturing processes in machine engineering, working metals and alloys by cutting.

SUBSTANCE: apparatus includes attachment for placing, basing and fastening part with possibility of rotating it relative to lengthwise axis; tool including needle milling cutter having body and sleeve with pile bundles forming working concave spherical surface with radius R-i where R -radius of worked spherical surface, mm; i - interference value, mm, and arranged radially relative to center of worked spherical surface. Said sleeve is driven to rotation from individual drive unit. Tool is coupled with hydraulic pulse generator of hydraulic cylinder where striker for additionally imparting periodical pulse load to tool and wave-guide supporting needle milling cutter are arranged.

EFFECT: enlarged manufacturing possibilities due to controlling depth of cut-off layer and surface micro-relief, intensified working process, strengthening working surface due to applying static and pulse load.

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