Patent ID: 6811360
Filing Date: 2004-11-02
Classification: B23C,Y10T

Abstract:
A cutting plate for machining ball races, comprising upper and lower surfaces oriented substantially parallel to one another and edge surfaces interconnecting the upper and lower surfaces, a cutting edge structure defined at least in part by an intersection between the edge surfaces and the upper surface; the edge surfaces including long edge surface, and a short edge surface, the long edge surface extending substantially parallel to a longitudinal axis of the insert; the cutting edge structure including a main cutting edge, an auxiliary cutting edge, and an angle cutting edge; each main cutting edge defined by an intersection of the short edge surface and the upper surface; the auxiliary cutting edge defined by an intersection of the long edge surface and the upper surface and oriented at an angle relative to the main cutting edge; the angle cutting edge connecting the main cutting edge to the auxiliary cutting edge; the angle cutting edge, as viewed in a direction perpendicular to the upper surface, having a first radius, and the auxiliary cutting edge having a second radius larger than the first radius; wherein an angle of transition is formed at a transition point between the angle cutting edge and the auxiliary cutting edge, the angle of transition being formed between the longitudinal axis and a line tangent to the transition point and being in the range between 10Â° and 35Â°.