Throwaway insert and milling tool equipped with the same
AssigneeKYOCERA Corporation
InventorTakuya Ishida
Life of this patent
Estimating the term…
Abstract
A throwaway insert enabling the use of a holder for a long period and having excellent chip evacuation is provided. The throwaway insert is formed in a substantially polygonal plate shape and includes a rake face formed on an upper surface thereof, a relief face formed on a side surface thereof, a main cutting edge formed along a ridge representing an intersection of the rake face and the relief face, which is divided into a plurality of main cutting edge divisions by at least one groove formed on the relief face, and a projection formed so as to protrude from the rake face in correspondence with each of the main cutting edge divisions.
Claims29
A throwaway insert formed in substantially a plate shape comprising:
- a rake face on one thicknesswise surface;
- a relief face on a side surface;
- a main cutting edge formed along a ridge representing an intersection of the rake face and the relief face, which is divided into a plurality of main cutting edge divisions by a plurality of grooves;
- and
- a plurality of projections, wherein each projection protrudes from the rake face in correspondence with each of the main cutting edge divisions, wherein each projection is in an area between the two grooves nearest the main cutting edge division to which the projection corresponds.
A throwaway insert comprising:
- a rake face formed on one thicknesswise surface of a main body formed into a substantially plate shape;
- a bottom surface formed on another thicknesswise surface of the main body;
- a relief face formed on a side surface of the main body;
- a main cutting edge formed along a ridge representing an intersection of the rake face and the relief face;
- and
- a main groove formed on the relief face, which has its one end reached the rake face and the other end reached the bottom surface,
- wherein the main cutting edge and the relief face are divided into a plurality of first main cutting edge divisions and a plurality of relief face divisions, respectively, by the main groove,
- and wherein the first main cutting edge division is divided into a plurality of second main cutting edge divisions by a sub-groove which is formed on the relief face division abreast of the main groove, one end of the sub-groove being reached the rake face.
Dependencies are inferred from the claim text.