CUTTING PLATE Russian patent published in 2011 - IPC B23C5/20 

FIELD: process engineering.

SUBSTANCE: double-sided overturning indexing plate has identical opposite first and second face surfaces and peripheral lateral surface arranged there between, through fastening hole to run between said first and second face surfaces and outward, central plane arranged between said face surfaces, through hole axis running perpendicular through central plane, and Y-multiple rotary symmetry about through hole axis. Note here that peripheral lateral surface includes I main lateral surfaces and Y auxiliary lateral surfaces, each auxiliary lateral surface being connected with two adjacent main surfaces, and represents a section of cylindrical surface with preset radius exceeding the distance from auxiliary lateral surface to through hole axis. Peripheral lateral surface crosses each first and second face surfaces along continuous peripheral edge. Each peripheral edge comprises Y main edges and Y auxiliary edges. Note that each main edge is formed on intersection of appropriate main and auxiliary lateral surface and first or second lateral surface, and that each auxiliary edge is formed on intersection of appropriate auxiliary lateral surface and first or second face surface, and connected with two adjacent main edges. Note also that each main lateral surface, comprises medium surface arranged across main central line formed on intersection of medium plane with main surfaces in direction to first and second main edges.

EFFECT: higher quality of machining.

17 cl, 14 dwg