FIELD: process engineering.
SUBSTANCE: rotary file comprises shank and working section with its outer surface made of hard alloy and provided with multiple right-hand screw chip grooves to make multiple cutting teeth. Note here that every said tooth has cutter face, clearance surface and positive face angle with no radial chamber on periphery.
EFFECT: expanded operating performances.
24 cl, 20 dwg
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Authors
Dates
2012-12-27—Published
2008-11-06—Filed