Patent ID: 8083442

Claim:
A cutting tool for a lapping plate, comprising: a major body, one end of the major body defining a reference surface and the other end of the major body forming a cutout at a free edge thereof; and a cutting body formed on the cutout of the major body, the cutting body having a first connection surface connecting to one surface of the cutout and a second connection surface connecting the first connection surface with the other surface of the cutout, the first connection surface having an arc-shaped portion at a tip edge thereof which forms a first angle with the reference surface, the second connection surface having an inclined portion which is connected to the arc-shaped portion and forms a second angle with the reference surface, wherein the cutting body further comprises a third connection surface, the first connection surface connects to the second connection surface via the third connection surface, and the third connection surface has a secondary portion via which the arc-shaped portion connects to the inclined portion and the secondary portion forms a third angle with the reference surface.