CARBIDE-TIPPED HOBBING CUTTER Russian patent published in 1998 - IPC

FIELD: metal-cutting tools; mechanical engineering; manufacture of gear wheels in manufacture of automobiles, tractors, etc. SUBSTANCE: hobbing cutter has zero rake and strengthening chamfers made at negative rake at teeth point γ and depth γ, where m is modulus, mm; chamfers are made at angle γ₁=-(10-15^°), at depth γ₂=arctg(2tgγ₁). Modification of profiles of alternating teeth is ensured through sharpening strengthening chamfers of different sizes on faces on alternating teeth (racks). EFFECT: enhanced resistance; reduced consumption of labour for manufacture of cutter. 2 cl, 8 dwg