A cutting tool

• Main Authors: BUTLER-SMITH PAUL, GAVALDA DIAZ ORIOL, AXINTE DRAGOS, NOVOVIC DONKA
• Format: Patent
• Language: Chinese; English
• Published: 13.11.2018
• Subjects: PERFORMING OPERATIONS; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE; WORKING STONE OR STONE-LIKE MATERIALS

The invention relates to a cutting tool. A fluted drill (100) comprises, in axial sequence, a body portion (110), and a cutting portion (130). The cutting portion (130) comprises two or more cutting edges (140), with each cutting edge (140) extending from a distal end (132) of the cutting portion (130), along the cutting portion (130) towards the body portion (110), to the body portion (110). Eachcutting edge (140) has a first rake angle (1 ) at the distal end (132) of the cutting portion (130), progressively increasing to a third rake angle (3 ) at a proximal end (134) of the cutting portion(130). Each cutting edge (140) has a first uncut chip thickness (h D,1 ) at the distal end (132) of the cutting portion (130), progressively decreasing to a third uncut chip thickness (h D,3 ) at theproximal end (134) of the cutting portion (130). 本发明涉及切削工具。种带槽钻按照轴向顺序包括主体部分和切削部分。所述切削部分包括两个或更多个切削边缘，其中，每个切削边缘从所述切削部分的远端沿所述切削部分朝向所述主体部分延伸到所述主体部分。每个切削边缘具有处于所述切削部分的远端处的第前角，所述第前角逐渐增加至处于所述切削部分的近端处的第三前角。每个切削边缘具有处于所述切削部分的远端处的第未切切屑厚度，