CUTTING TOOL

• Main Authors: INABA SHOTA, FUJIHIRA MASAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 27.12.2018
• Subjects: MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; MILLING; PERFORMING OPERATIONS; TRANSPORTING

To provide a cutting tool which can reduce a cutting resistance at the time of start of cutting.SOLUTION: A cutting tool 101 has a first cutting edge part A1 and a second cutting edge part B1 which are alternately located in a circumferential direction. The first cutting edge part A1 has: a first cutting blade 11 which is formed on one side in an axial direction; a first inclined blade 12 which is continued to a shank 2 side from the first cutting blade, and is so inclined toward the shank side as to approach an axis of the shank; and a first inner blade 13 which is so formed as to be continued to an outer periphery of the shank from the first inclined blade. The second cutting edge part B1 has: a second cutting blade 21 which is formed on the shank side; a second inclined blade 22 which is continued to one side from the second cutting blade, and is so inclined toward said one side as to approach the axis of the shank; and a second inner blade 23 which is so formed as to be continued to the outer periphery of the shank from the second cutting blade.SELECTED DRAWING: Figure 6 【課題】切削開始時の切削抵抗を低減することが可能な切削工具を提供する。【解決手段】切削工具１０１は、周方向に交互に配置される第１刃先部Ａ１と第２刃先部Ｂ１とを有する。第１刃先部Ａ１は、軸方向の一方側に形成される第１切削刃１１と、第１切削刃からシャンク２側へ連続し、シャンク側へ向けてシャンクの軸に近づくように傾斜した第１傾斜刃１２と、第１傾斜刃からシャンクの外周に連続して形成される第１内刃１３とを有する。第２刃先部Ｂ１は、シャンク側に形成され第２切削刃２１と、第２切削刃から一方側に連続し、一方側へ向けてシャンクの軸に近づくように傾斜した第２傾斜刃２２と、第２切削刃からシャンクの外周に連続して形成される第２内刃２３とを有する。【選択図】図６