| 摘要 |
<p>A cutter tip is provided to cut a work effectively and expand life to the cutter tip by forming a plurality of conical grooves on the cutter tip. A cutter tip(100) comprises a plurality of first cutting grooves and second cutting grooves(112a,112b). The first cutting grooves are formed at upper and lower edges of the cutter tip. The second cutting groove is separated from the first cutting grooves in zigzag and formed like a cone. The first cutting groove is formed like a semi-cone.</p> |
