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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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公开(公告)号：US5026221A
公开(公告)日：1991-06-25
申请号：US521973
申请日：1990-05-11
申请人： Tatsuo Arai , Hidehisa Shiratori , Ryoei Hasegawa , Kazuo Iizuka
发明人： Tatsuo Arai , Hidehisa Shiratori , Ryoei Hasegawa , Kazuo Iizuka
CPC分类号： B23Q11/0046 , B23Q11/08 , B23Q3/069 , B23Q2220/008 , Y02P70/171 , Y10T407/1942 , Y10T407/24 , Y10T409/30392 , Y10T409/304088
摘要： In a rotary cutting tool for use with at least one cutting tip, a cutter body has its forward end whose outer periphery has mounted thereto the cutting tip. A chip suction device is arranged outwardly of an outer peripheral surface of the cutter body for drawing chips generated by the cutting tip. The chip suction device includes a generally cylindrical cover unit having a wall for covering the cutter body. The cover unit is supported by the cutter body for rotation relative thereto. A chip accommodating chamber is defined between an inner peripheral surface of the cover unit and the outer peripheral surface of the cutter body. A suction port unit is provided in the wall of the cover unit and communicates with the chip accommodating chamber. A chip guide unit is arranged at the forward end of the cutter body in facing relation to the face of the cutting tip for guiding the chips generated by the cutting tip to the chip accommodating chamber.
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公开(公告)号：US5294219A
公开(公告)日：1994-03-15
申请号：US995534
申请日：1992-12-22
申请人： Hidehisa Shiratori , Tatsuo Arai , Masayuki Okawa
发明人： Hidehisa Shiratori , Tatsuo Arai , Masayuki Okawa
CPC分类号： B23C5/1045 , Y10T407/1908 , Y10T407/1924 , Y10T407/1948 , Y10T407/245
摘要： There is disclosed a ball end mill which has a hemishepherical portion formed at a front end of an end mill body. A pair of tip mounting seats are formed at the hemishepherical portion. A main throw-away tip and a second throw-away tip are secured on the tip mounting seat respectively such that the axial rake angle of the main tip is set at a negative angle and the axial rake angle of the second tip is set at a positive angle. There is also disclosed a second ball end mill. In the second ball end mill, only a main throw-away tip is secured on a tip mounting seat. The axial rake angle of the main tip is set at a negative angle. One or more chip breaker grooves are formed on a rake face of the tip.
摘要翻译： 公开了一种球头立铣刀，其具有形成在端铣刀体的前端的半球形部分。 在半球形部分形成有一对尖端安装座。 分别将主抛弃尖端和第二丢弃尖端固定在尖端安装座上，使得主尖端的轴向前角设定为负角度，并将第二顶端的轴向前角设定为 正角度。 还公开了一种第二球头立铣刀。 在第二球头立铣刀中，只有主抛弃尖端被固定在刀片安装座上。 主尖端的轴向前角设定为负角度。 一个或多个断屑槽形成在尖端的前刀面上。
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公开(公告)号：US5197831A
公开(公告)日：1993-03-30
申请号：US833652
申请日：1992-02-11
申请人： Hidehisa Shiratori , Tatsuo Arai , Masayuki Okawa
发明人： Hidehisa Shiratori , Tatsuo Arai , Masayuki Okawa
CPC分类号： B23C5/1045 , B23C5/2213 , B23C2200/203 , Y10T407/1924 , Y10T407/235 , Y10T407/245
摘要： A cutter insert for a ball end mill is disclosed which includes a plate-like insert body having a front face and a side face extending from the front face. The front face has a generally convexly curved marginal ridge defined by the intersection of the front face with the side face. The marginal ridge serves as a cutting edge. The front face serves as a rake surface for the cutting edge while the side face serves as a relief surface for the cutting edge. The cutting edge has a leading portion to be indexed in the end cutting position and a trailing portion to be indexed in the peripheral cutting position. A land is formed on the rake surface so as to extend along the cutting edge. The land has a width gradually increasing in a direction from the leading portion of the cutting edge toward the trailing portion thereof.
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公开(公告)号：US5004378A
公开(公告)日：1991-04-02
申请号：US353696
申请日：1989-05-18
申请人： Tatsuo Arai , Katsumi Haga
发明人： Tatsuo Arai , Katsumi Haga
IPC分类号： B23B27/16
CPC分类号： B23B27/1662 , B23B2205/08 , Y10T407/227 , Y10T407/2276 , Y10T407/228 , Y10T407/2282
摘要： The present invention concerns to a clamped cutting tool used in the metalworking field. The clamped cutting tool includes a tool-holder, a shim member placed on the tool-holder, a cutting insert placed on the shim member, and a locking pin held in engagement with the tool-holder for clamping the cutting insert. The tool-holder includes a forward end portion having an insert receving recess formed therein, the recess having a bottom wall and at least one side wall extending upwardly from the bottom wall, the bottom wall including a pin-receiving hole of a circular cross-section formed therein so as to extend downwardly. The shim member has a bore of a circular cross-section formed therethrough, the shim member being disposed on the bottom wall of the recess in such a manner that the bore communicates with and is concentric to the hole of the tool-holder. The cutting insert has an aperture of a circular cross-section formed therethrough, the insert being disposed on the shim member in such a manner that the aperture communicates with the bore of the shim member.
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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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