摘要:
The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than −150 ° C.
摘要:
In this insert, in addition to the insert being formed so that the cutting edge is twisted at a helix angle within the range of 5° to 25° about the axis when the insert is attached to the insert mounting seat, the thickness of the insert body at the flank located on a straight line, which passes through the center of the rough hemisphere formed by the rotational locus of the cutting edge and forms an angle of inclination of 90° relative to the axis, is set to be within the range of 0.5D to 0.9D relative to the thickness D of the rough plate that composes the insert body. As a result, since a comparatively gentle but adequately large helix angle is imparted to the cutting edge, cutting resistance decreases. In addition, since the thickness of the insert body at the flank on the rear end side of the insert body is not excessively thin, the rigidity of the insert body is adequately secured.
摘要:
In the radius end mill, main gash faces has an angle of inclination with respect to an axis that is smaller than a twist angle of chip discharge flutes. The main gash faces are formed on inner circumferential sides of distal end portions of wall surfaces that face in a tool rotation direction of helically twisted chip discharge flutes, which is formed on an outer circumference of a distal end portion of a tool body that is rotated around the axis. End cutting edges are formed on a distal end of the main gash faces. Sub gash faces has an angle of inclination with respect to the axis that is greater than that of the main gash faces. The sub gash faces are formed on an outer circumferential side of the main gash faces such that they extend away via step portions from the main gash faces. In addition, corner cutting edges that have a protruding arc-shaped contour are formed to be continuous with an outer circumferential side of the end cutting edges extending from a distal end as far as an outer circumference of the sub gash faces.
摘要:
A surface-coated cutting tool member exhibiting a superior tool life due to a hard coating layer thereof is provided. The surface-coated cutting tool member includes a tungsten carbide based cemented carbide substrate, a titanium carbonitride based cermet substrate, or a cubic boron nitride based sintered substrate; and a hard coating layer of a nitride compound containing titanium and yttrium, which is formed on a surface of the substrate using a physical vapor deposition method in an overall average thickness of 1 to 15 μm. The hard coating layer has a component concentration profile in which maximum Y component containing points (minimum Ti component containing points) and points without Y component (TiN points) appear alternatingly and repeatedly at a predetermined interval in a direction of thickness of the hard coating layer, and the amount of contained Y component is continuously changed from the maximum Y component containing points to the points without Y component and from the points without Y component to the maximum Y component containing points, the maximum Y component containing points satisfy a composition formula of (Ti1-XYX)N (where X indicates an atomic ratio of 0.005 to 0.15), and a distance between one of the maximum Y component containing points and adjacent one of the points without Y component is from 0.01 to 0.1 μm.
摘要翻译:提供了由于其硬涂层而具有优异的工具寿命的表面涂覆的切削工具构件。 表面涂覆的切削工具构件包括碳化钨基硬质合金基板,基于碳氮化钛的金属陶瓷基板或立方氮化硼基烧结基板; 以及包含钛和钇的氮化物的硬涂层,其使用物理气相沉积法在基板的表面上形成总平均厚度为1至15μm。 硬涂层具有成分浓度分布,其中含有最大Y成分(含最少Ti成分的点)和不含Y成分的点(TiN点)以硬涂层的厚度方向以预定间隔交替重复出现 ,并且所含的Y成分的含量从包含最大Y成分的点到不含Y成分的点和不含Y成分的点连续地变化为含有最多Y成分的点,所以含有Y成分的最大Y成分满足下式 (Ti 1-X X Y X)N(其中X表示原子比为0.005〜0.15),以及最大Y成分含有点和相邻的Y成分之间的距离 没有Y分量的点之一是从0.01到0.1毫米。
摘要:
A cutting tool made of a surface-coated cubic boron nitride-based ultra-high-pressure sintered material, comprising a cutting insert main body formed by ultra-high-pressure sintering of a compact composed of titanium nitride, aluminum and/or aluminum oxide, and boron nitride, and a hard coating layer vapor deposited on the main body. The main body has a texture containing cubic boron nitride, titanium nitride and reaction product. The hard coating layer has a lower layer of nitride having a composition of [Ti1-X-YAlXSiY]N, where X is in a range from 0.40 to 0.60 and Y is in a range from 0.02 to 0.10 in an atomic ratio, and the upper layer comprises a thin layer A having the composition of [Ti1-X-YAlXSiY]N, where X is in a range from 0.40 to 0.60 in an atomic ratio and Y is in a range from 0.02 to 0.10, and a thin layer B consisting of a Ti nitride (TiN). The upper layer consists of the thin layer A and a thin layer B layered alternately.
摘要翻译:一种由表面涂覆的立方氮化硼基超高压烧结材料制成的切削工具,包括通过超高压烧结由氮化钛,铝和/或氧化铝构成的压块形成的切削刀片主体 和氮化硼,以及沉积在主体上的硬涂层蒸气。 主体具有立方氮化硼,氮化钛和反应产物的纹理。 硬涂层具有下层的氮化物,其组成为[Ti 1 -Y 1 O X 1 Si Y N] N,其中X为 在0.40〜0.60的范围内,Y在原子比为0.02〜0.10的范围内,上层包含具有[Ti 1 -YY< SUB X X Si Y N,其中X在原子比为0.40-0.60的范围内,Y在0.02至0.10的范围内,薄层B由 Ti氮化物(TiN)。 上层由薄层A和交替层叠的薄层B组成。
摘要:
A coated cutting tool member exhibiting not only a superior wear resistance during a high speed cutting operation in which a significant amount of heat is generated, but also exhibit a superior shipping resistance even when such a cutting operation is performed under severe conditions, such as with a large depth of cut or a large feed. In the coated cutting tool member, a hard coating layer of one of nitride compound and carbonitride compound containing Ti and Al is formed using a physical vapor deposition method at an average thickness of 1 to 10 μm, and the hard coating layer includes Zr at an atomic ratio of 0.002 to 0.1, and at least one of Y and Ce at an atomic ratio of 0.0005 to 0.05 in a coexistence state.
摘要:
A surface-coated cutting tool comprising a cutting tool body, and a hard coating layer formed on a surface of the cutting tool body. The hard coating layer comprises an upper layer comprising chromium boride and a lower layer comprising a composite nitride containing Ti and Al. The composite nitride preferably satisfies a composition formula: (Ti1-XAlX)N, where X is in a range from 0.40 to 0.75 by atomic ratio.
摘要翻译:一种表面涂层切削工具,包括切削工具主体和形成在切削工具主体的表面上的硬涂层。 硬涂层包括含有硼化铬的上层和包含含有Ti和Al的复合氮化物的下层。 复合氮化物优选满足以下组成式:(Ti 1-X Al 2 X N)N,其中X以原子比为0.40至0.75的范围。
摘要:
A coated cutting tool member exhibiting not only a superior wear resistance during a high speed cutting operation in which a significant amount of heat is generated, but also exhibit a superior shipping resistance even when such a cutting operation is performed under severe conditions, such as with a large depth of cut or a large feed. In the coated cutting tool member, a hard coating layer of one of nitride compound and carbonitride compound containing Ti and Al is formed using a physical vapor deposition method at an average thickness of 1 to 10 μm, and the hard coating layer includes Zr at an atomic ratio of 0.002 to 0.1, and at least one of Y and Ce at an atomic ratio of 0.0005 to 0.05 in a coexistence state.
摘要:
In the radius end mill, main gash faces has an angle of inclination with respect to an axis that is smaller than a twist angle of chip discharge flutes. The main gash faces are formed on inner circumferential sides of distal end portions of wall surfaces that face in a tool rotation direction of helically twisted chip discharge flutes, which is formed on an outer circumference of a distal end portion of a tool body that is rotated around the axis. End cutting edges are formed on a distal end of the main gash faces. Sub gash faces has an angle of inclination with respect to the axis that is greater than that of the main gash faces. The sub gash faces are formed on an outer circumferential side of the main gash faces such that they extend away via step portions from the main gash faces. In addition, corner cutting edges that have a protruding arc-shaped contour are formed to be continuous with an outer circumferential side of the end cutting edges extending from a distal end as far as an outer circumference of the sub gash faces.
摘要:
A surface-coated cutting tool member includes a tungsten carbide based cemented carbide substrate, a titanium carbonitride based cermet substrate, or a cubic boron nitride based sintered substrate; and a hard coating layer of a nitride compound containing aluminum and titanium, formed on a surface of the substrate using a physical vapor deposition method in an overall average thickness of 1 to 15 μm. The hard coating layer has a component concentration profile in which maximum aluminum containing points and minimum aluminum containing points appear alternatingly and repeatedly at a distance from 0.01 to 0.1 μm in a direction of thickness of the hard coating layer. The amount of contained aluminum (or titanium) is changed from the maximum aluminum containing points to the minimum aluminum containing points. The maximum aluminum containing points satisfy a formula: (AlXTi1−X)N, wherein X is between 0.70 to 0.95. The minimum aluminum containing points satisfy a formula: (AlYTi1−Y)N, wherein Y is between 0.40 to 0.65.
摘要翻译:表面涂覆的切削工具构件包括碳化钨基硬质合金基板,碳氮化钛基金属陶瓷基板或立方氮化硼基烧结基板; 以及使用物理气相沉积法在基板的表面上形成1〜15μm的整体平均厚度的含有铝和钛的氮化物的硬涂层。 硬涂层具有成分浓度分布,其中最大含铝点和最小含铝点在硬涂层的厚度方向上以0.01至0.1μm的距离交替重复出现。 所含铝(或钛)的含量从最大含铝量变为最低含铝量。 最大含铝量满足以下公式:(Al x X Ti 1-X N)N,其中X在0.70至0.95之间。 最小含铝量满足下列公式:其中Y在0.40至0.65之间(Al 1 Y 1 Ti 1-Y N)N。