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公开(公告)号：US4898499A
公开(公告)日：1990-02-06
申请号：US164442
申请日：1988-03-04
申请人： Osamu Tsujimura , Tatsuo Arai , Masaaki Nakayama , Masayuki Okawa
发明人： Osamu Tsujimura , Tatsuo Arai , Masaaki Nakayama , Masayuki Okawa
CPC分类号： B23C5/1045 , B23C5/2221 , B23C2200/0416 , B23C2200/0483 , Y10T407/1924 , Y10T407/1948 , Y10T407/21 , Y10T407/23
摘要： A ball end mill includes an end mill body having an axis of rotation therethrough and an indexable cutter insert releasably attached to a forward end portion of the body. The insert includes a plate having front and rear faces. The front face has at least one generally arcuate first marginal ridge with the first marginal ridge serving as a respective generally arcuate main cutting edge. The front face has at least one short second marginal ridge with the second marginal ridge serving as a respective short cutting edge. The main cutting edge has a leading end portion disposed at one end thereof and intersecting the short cutting edge in such a manner that an angle defined by the leading end portion and the short cutting edge is obtuse. The front face serves as a rake surface for the cutting edges and has a marginal surface portion disposed adjacent to the short cutting edge and the leading end portion. The marginal surface portion is convexly curved so as to slope toward the rear face toward the short cutting edge. The arrangement of the first insert with respect to the body is such that the leading end portion of the main cutting edge is disposed adjacent to the axis of the body, and that the short cutting edge extends from the leading end portion beyond the axis of the body toward the rearward end portion of the body when viewed in a direction generally perpendicular to the front face.
摘要翻译： 球头铣刀包括端铣刀主体，其具有穿过其的旋转轴线和可释放地附接到主体的前端部分的可转位刀具刀片。 插入件包括具有前表面和后表面的板。 前表面具有至少一个大致为弧形的第一边缘脊，第一边缘脊用作相应的大致弓形的主切削刃。 前表面具有至少一个短的第二边缘脊，第二边缘用作相应的短切割边缘。 主切削刃具有设置在其一端并与短切削刃相交的前端部，使得由前端部和短切削刃限定的角度是钝的。 前表面用作切削刃的前刀面，并且具有邻近短切削刃和前端部设置的边缘表面部分。 边缘表面部分是凸形弯曲的，以便朝向短切削刃朝向后表面倾斜。 第一插入件相对于主体的布置使得主切削刃的前端部被设置成与主体的轴线相邻，并且短切削刃从前端部分延伸超过主体的轴线 当从大致垂直于前表面的方向观察时，本体朝向身体的后端部分。
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公开(公告)号：US4844666A
公开(公告)日：1989-07-04
申请号：US87104
申请日：1987-08-19
申请人： Osamu Tsujimura , Tatsuo Arai , Nobuo Hiyama
发明人： Osamu Tsujimura , Tatsuo Arai , Nobuo Hiyama
CPC分类号： B23C5/003 , B23C5/109 , B23C2210/0492 , Y10T407/1908 , Y10T407/1946 , Y10T407/1958 , Y10T407/1964
摘要： An insert rotary cutting tool includes a tool body of a generally circular cross-section having an axis of rotation therethrough and having an outer periphery. The cutting tool has plural groups of cutting inserts releasably mounted on the outer periphery of the body with the groups being spaced circumferentially of the body from each other. The inserts of each group are displaced circumferentially of the body and spaced axially of the body. Each of the inserts has a plurality of main cutting edges and is disposed in such a manner that one of the main cutting edges is indexed in a peripheral cutting position to serve as a peripheral cutting edge. The indexed peripheral cutting edges of the inserts are in series axially of the body as viewed circumferentially of the body. The indexed peripheral cutting edges of the inserts of each group have foremost ends disposed on a common helical line extending helically axially of the body. The helical line which the foremost ends of the indexed peripheral cutting edges of the inserts of at least one of the groups are disposed on is provided with a helix angle different from helix angles of the helical lines which the foremost ends of the indexed peripheral cutting edges of the inserts of the other groups are disposed on.
摘要翻译： 插入式旋转切割工具包括具有大致圆形横截面的工具主体，该工具主体具有穿过其中的旋转轴线并且具有外周边。 切割工具具有可拆卸地安装在主体的外周上的多组切割刀片，该组彼此沿着本体的周向隔开。 每个组的插入物沿着身体的周向位移并且与身体的轴向间隔开。 每个插入件具有多个主切削刃，并且以这样的方式设置，使得主切削刃中的一个在周向切削位置上被分度以用作外围切削刃。 插入件的分度的周边切削刃沿着本体的圆周方向在主体的轴向上是串联的。 每个组的插入物的分度的周边切削刃具有设置在螺旋轴向上延伸的公共螺旋线上的最前端。 设置有至少一个组的插入物的分度的周边切削刃的最前端的螺旋线设置有与螺旋线的螺旋角不同的螺旋角，螺旋线的指向的周边切削刃 的其他组的插入物被放置在其上。
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公开(公告)号：US4919573A
公开(公告)日：1990-04-24
申请号：US246639
申请日：1988-09-20
申请人： Osamu Tsujimura , Tatsuo Arai , Masayuki Okawa
发明人： Osamu Tsujimura , Tatsuo Arai , Masayuki Okawa
CPC分类号： B23C5/2221 , B23C5/1045 , B23C2200/083 , B23C2200/123 , B23C2200/165 , B23C2200/201 , B23C2200/203 , B23C2210/168 , Y10T407/192 , Y10T407/1924 , Y10T407/2274
摘要： A ball end mill includes an end mill body, an indexable cutter insert, a clamp screw and shift preventing mechanism. The body has an insert receiving recess formed in a forward end portion thereof. The insert has a front face, a rear face and at least two convexly curved side faces, and has at least two convexly curved main cutting edges each defined by the intersection of a respective one of the convexly curved side faces with the front face. The insert is received in the insert receiving recess with the rear face mated with the bottom face of the recess in such a manner that one of the main cutting edges is indexed in a cutting position. The shift preventing mechanism includes an engaging recess formed in one of the bottom face of the insert receiving recess and the rear face of the insert and an engaging projection complementary to the engaging recess and provided on the other of the bottom face of the insert receiving recess and the rear face of the insert so as to be brought into engagement with the engaging recess.
摘要翻译： 球头铣刀包括立铣刀主体，可转位刀具插入件，夹紧螺钉和换档防止机构。 主体具有形成在其前端部的插入物容纳凹部。 插入件具有前表面，后表面和至少两个凸形弯曲的侧面，并且具有至少两个凸形弯曲的主切削刃，每个主切削刃由相应的一个凸形弯曲侧面与前表面的交点限定。 插入件被容纳在插入物容纳凹部中，其后表面与凹部的底面配合，使得主切削刃中的一个在切割位置被分度。 防止移动机构包括形成在插入物容纳凹部的底面和插入件的后表面中的一个中的接合凹部和与接合凹部互补的接合突起，并且设置在插入物容纳凹部的另一个底面上 和插入件的后表面与接合凹部接合。
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公开(公告)号：US4883391A
公开(公告)日：1989-11-28
申请号：US247347
申请日：1988-09-21
申请人： Osamu Tsujimura , Tatsuo Arai , Masayuki Okawa
发明人： Osamu Tsujimura , Tatsuo Arai , Masayuki Okawa
CPC分类号： B23C5/1045 , B23C5/2221 , B23C2200/083 , B23C2200/123 , B23C2200/201 , B23C2200/203 , Y10T407/192 , Y10T407/1924 , Y10T407/1936 , Y10T407/196 , Y10T407/1964
摘要： A ball end mill includes a body, an indexable cutter insert and a clamp screw. The body has a recess formed in a forward end portion thereof and a bore formed therein and opening to a bottom face of the recess. The bore includes a cylindrical portion disposed adjacent the bottom face and an internally threaded portion greater in diameter than the internally threaded portion. The insert includes a front face, a rear face and at least two convexly curved side faces. The front face has at least two convexly curved main cutting edges each defined by the intersection of a respective one of the curved side faces with the front face. The insert has an aperture formed therethrough and extending generally perpendicular to the rear face. The insert is releasably mounted in the recess with the rear face held in contact with the bottom face in such a manner that one of the main cutting edges is indexed in a cutting position. The clamp screw includes an externally threaded portion and a cylindrical engaging portion disposed coaxially with the externally threaded portion and being greater in diameter than the threaded portion. The clamp screw passes through the aperture of the insert and is received by the bore in such a manner that the externally threaded portion is threaded into the internally threaded portion while the cylindrical engaging portion is held in engagement with the cylindrical portion.
摘要翻译： 球头铣刀包括主体，可转位刀具刀片和夹紧螺钉。 本体具有形成在其前端部分中的凹部和形成在其中并且通向凹部的底面的孔。 孔包括邻近底面设置的圆柱形部分和直径大于内螺纹部分的内螺纹部分。 插入件包括前表面，后表面和至少两个凸形弯曲的侧面。 前表面具有至少两个凸曲面的主切削刃，每个主切削刃由相应的一个弯曲侧面与前表面的交点限定。 插入件具有穿过其形成并且大致垂直于后表面延伸的孔。 插入件可释放地安装在凹部中，使得后表面与底面保持接触，使得主切削刃中的一个在切割位置上被分度。 夹紧螺钉包括外螺纹部分和与外螺纹部分同轴设置并且直径大于螺纹部分的圆柱形接合部分。 夹紧螺钉穿过插入件的孔，并且被孔接收，使得外螺纹部分被拧入内螺纹部分中，同时圆柱形接合部分保持与圆柱形部分接合。
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公开(公告)号：US5762453A
公开(公告)日：1998-06-09
申请号：US709819
申请日：1996-09-10
申请人： Tatsuo Arai , Takayoshi Saito
发明人： Tatsuo Arai , Takayoshi Saito
CPC分类号： B23C5/2221 , B23C2200/123 , B23C2200/125 , B23C2200/203 , B23C2200/205 , B23C2200/367 , Y10T407/1924 , Y10T407/23
摘要： A cutting insert wherein cutting edges are formed on a pair of ridge portions of an upper surface and a pair of ridge portions on a lower surface in a staggered position relative to the ridge portions of the upper surface in a direction along the peripheries of the upper and lower surfaces. Rakes are formed on side surfaces of the insert body connecting to the cutting edges. Each rake has an inclination such as to be closer to a center of the upper or lower surface at a position remoter from the corresponding cutting edge. Each rake is formed of a curved surface which is formed along the side connecting to the cutting edge and which is curved along the peripheral direction so as to round out in an outward direction from the insert body, and a flat surface which obtusely intersects the curved surface and connect to a ridge portion opposite from the cutting edge formed along on the side of the rake. The positions and the shapes of the curved surface portions and the cutting edges are determined on the basis of the flat surfaces and the upper and lower surfaces. The insert can be prevented from shifting and the working accuracy can be improved by accurately forming the cutting edges and other portions.
摘要翻译： 一种切削刀片，其中切割刃形成在上表面的一对脊部和一对脊部分上，所述一对脊部在相对于上表面的脊部的交错位置的下表面沿着上部的外周的方向 和下表面。 砧座形成在与切削刃连接的刀片主体的侧表面上。 每个耙具有倾斜，以便在距离相应的切割边缘偏离的位置处更靠近上表面或下表面的中心。 每个耙子由沿着连接到切割刃的一侧形成的弯曲表面形成，并且沿着圆周方向弯曲以从插入体向外的方向圆弧地形成，并且与弯曲的 并且与沿着耙子侧形成的切割刃相对的脊部连接。 基于平坦表面和上表面和下表面确定弯曲表面部分和切割边缘的位置和形状。 可以防止插入件移位，并且可以通过精确地形成切削刃等部分来提高加工精度。
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公开(公告)号：US5855457A
公开(公告)日：1999-01-05
申请号：US790941
申请日：1997-01-29
申请人： Tatsuo Arai , Takayoshi Saito , Norio Aso
发明人： Tatsuo Arai , Takayoshi Saito , Norio Aso
CPC分类号： B23B27/1662 , B23C5/109 , B23C5/2208 , B23C2200/164 , B23C2210/166 , B23C2240/24 , Y10T407/192 , Y10T407/1932 , Y10T407/1934 , Y10T407/1946
摘要： A disposable tip clamp mechanism capable of simplifying the mounting operation of a disposable cutting tip to produce an improved effect for preventing the dislocation of the tip is described. A screw member 36 having a screw hole 36a in the head 36c thereof is connected with the mounting screw hole 33 of a tip mounting seat 32, with the head portion 36c projecting from the tip mounting seat 32 and a disposable tip 37 is seated on the tip mounting seat 32 such that the engaging portion 37f thereof engages the head portion 36c of the screw hole-containing screw member 36.
摘要翻译： 描述了一次性尖端夹持机构，其能够简化一次性切割尖端的安装操作，以产生用于防止尖端脱位的改进效果。 在其头部36c中具有螺纹孔36a的螺钉构件36与尖端安装座32的安装螺钉孔33连接，头部36c从尖端安装座32突出，并且一次性尖端37就座于 尖端安装座32，使得其接合部分37f与螺钉孔螺钉构件36的头部36c接合。
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公开(公告)号：US5443335A
公开(公告)日：1995-08-22
申请号：US187283
申请日：1994-01-27
申请人： Takamasa Shimano , Tatsuo Arai , Takayoshi Saito
发明人： Takamasa Shimano , Tatsuo Arai , Takayoshi Saito
CPC分类号： B23C5/2221 , B23C2200/123 , B23C2200/125 , B23C2200/203 , B23C2200/205 , B23C2200/361 , B23C2200/367 , Y10T407/1924 , Y10T407/23
摘要： The invention relates to a cutting insert. The cutting insert has a polygonal tabular body having a main cutting edge and a sub-cutting edge. A rake surface connected to the main cutting edge and the sub-cutting edge is composed of a plurality of consecutive component surfaces so as to present a multi-face surface which is curved and convex along the circumference of the body. The consecutive component surfaces are demarcated from adjacent component surfaces by edges lines L.sub.1, L.sub.2 which at their one end reach the main cutting edge. The intersection angles at which the component surfaces intersect the end surface connected to the main cutting edge are so varied in a stepped manner that the intersection angle of the component surface most remote from the nose portion is the smallest. The third component surface is curved along the circumference of the body so as to be convex outward, so that the portion of the main cutting edge associated with this component surface is also curved to be convex outward.
摘要翻译： 本发明涉及一种切削刀片。 切削刀片具有多边形片状体，其具有主切削刃和副切削刃。 连接到主切削刃和副切削刃的前刀面由多个连续的部件表面构成，以便呈现沿主体圆周弯曲和凸出的多面表面。 连续的部件表面由相邻部件表面由边缘线L1，L2分开，边缘线L1，L2在其一端到达主切削刃。 部件表面与连接到主切削刃的端面相交的相交角度以使得最远离刀头部分的部件表面的相交角度最小的阶梯式变化。 第三部件表面沿着主体的圆周弯曲以向外凸出，使得与该部件表面相关联的主切削刃的部分也弯曲成向外凸出。
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公开(公告)号：US5314269A
公开(公告)日：1994-05-24
申请号：US940289
申请日：1992-09-03
CPC分类号： B23C5/2221 , B23C2200/0416 , B23C2200/0433 , B23C2200/367 , Y10T407/1924 , Y10T407/1952 , Y10T407/1956 , Y10T407/23
摘要： A cutting insert is disclosed which includes a polygonal plate-shaped insert body having two opposite faces directed in the direction of insert thickness and a plurality of peripheral faces lying between the opposite faces. The opposite faces have marginal edges with at least one of the marginal edges defining a main cutting edge. The peripheral faces intersect one another to form marginal edges with one of the marginal edges defining an auxiliary cutting edge which intersects the main cutting edge. The peripheral surface which includes the marginal edges defining the main and auxiliary cutting edges includes a rake region extending along the main and auxiliary cutting edge. This rake region is formed into a stepped formation of a plurality of sections disposed adjacent to one another to define marginal edges terminating at one ends at the main cutting edge and to be convexly shaped in such a manner that an angle defined between a respective section and one of the opposite faces which extends from the main cutting edge decreases stepwise in a direction away from the nose portion. At least one of the marginal edges of the sections has the other end extending to the marginal edge defined between the peripheral faces. Moreover, an insert cutter which employs the aforesaid insert is also disclosed.
摘要翻译： 公开了一种切削刀片，其包括多边形板状刀片本体，该多边形板状刀片主体具有沿刀片厚度方向指向的两个相对面和位于相对面之间的多个外围面。 相对的面具有边缘，边缘中的至少一个限定主切削刃。 周边面彼此相交以形成边缘，其中边缘之一限定了与主切割刃相交的辅助切割边缘。 包括限定主切削刃和辅助切削刃的边缘的周边表面包括沿着主切削刃和辅助切削刃延伸的前刀面区域。 该耙区形成为彼此相邻设置的多个部分的阶梯形状，以限定在主切割边缘的一端处终止并且以凸形成形的边缘，使得在相应部分和 从主切削刃延伸的相对面中的一个沿远离鼻部的方向逐步减小。 这些部分的边缘中的至少一个具有延伸到限定在外围面之间的边缘的另一端。 此外，还公开了采用上述插入件的插入式切割器。
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公开(公告)号：US5240356A
公开(公告)日：1993-08-31
申请号：US857989
申请日：1992-03-26
申请人： Tatsuo Arai , Takayoshi Saito
发明人： Tatsuo Arai , Takayoshi Saito
CPC分类号： C23C30/00 , C23C8/00 , Y10T407/116 , Y10T407/1904 , Y10T407/1906 , Y10T407/1908 , Y10T407/27
摘要： A cutting tool is disclosed which includes a tool body having a mounting portion to be secured to a machine tool and having a plurality of insert receiving recesses formed therein. A plurality of cutting inserts are releasably attached to the insert receiving recesses, respectively. The tool body has a nitrided hard layer formed on a surface thereof. Furthermore, a clamp member used in the tool preferably has an abutment surface to be held in abutting contact with the insert or other parts and a chip-contacting surface with which cutting chips produced during cutting operation are brought into contact. The chip-contacting surface is defined by a nitriding hard layer formed on a precision-cast unglazed surface, and has a surface which is left without finish-working. Furthermore, a method for producing a cutting tool which includes a tapped hole formed therein and having an inner surface defining an unnitrided portion is disclosed. In this method, a plug is first threaded into the tapped hole. Subsequently, the tool body is subjected to nitriding treatment to form a hard layer on the surface of the tool body, and the plug is subsequently removed from the tool body.
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公开(公告)号：US5090849A
公开(公告)日：1992-02-25
申请号：US545626
申请日：1990-06-29
申请人： Tatsuo Arai , Katsumi Haga , Takayoshi Saito , Hidehisa Shiratori , Ryoei Hasegawa , Kazuo Iizuka
发明人： Tatsuo Arai , Katsumi Haga , Takayoshi Saito , Hidehisa Shiratori , Ryoei Hasegawa , Kazuo Iizuka
IPC分类号： B23Q11/00
CPC分类号： B23Q11/0046 , B23Q11/0042 , B23Q2220/008 , Y02P70/171 , Y10T408/46 , Y10T409/304088
摘要： In a rotary cutting tool for use with at least one cutting insert, a cutter body is rotatable about a rotational axis. The cutting insert is mounted to an outer periphery of a forward end of the cutter body. A chip moving unit is arranged outwardly of an outer peripheral surface of the cutter body for moving chips generated by the cutting insert, to a desirable location. A cover assembly is provided for covering the outer peripheral surface of the cutter body, having a flow passageway defined between an inner peripheral surface of the cover assembly and the outer peripheral surface of the cutter body. An air sending assembly is arranged within the flow passageway for sending air adjacent the cutting insert, toward the desirable location during rotation of the cutter body about the rotational axis.
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