公开(公告)号：US5017055A

公开(公告)日：1991-05-21

申请号：US430928

申请日：1989-11-02

申请人： Osamu Tsujimura ,  Tatsuo Arai ,  Masaaki Nakayama ,  Masayuki Okawa

发明人： Osamu Tsujimura ,  Tatsuo Arai ,  Masaaki Nakayama ,  Masayuki Okawa

IPC分类号： B23C5/10 ,  B23C5/22

CPC分类号： B23C5/1045 ,  B23C5/2221 ,  B23C2200/0416 ,  B23C2200/0483 ,  Y10T407/1924 ,  Y10T407/23

摘要： An indexable cutter insert for a rotary cutter includes a plate having front and rear faces. The front face has at least one pair of first and second marginal ridges intersecting each other. The first marginal ridge is generally arcuately shaped when viewed in a direction perpendicular to the front face and serves as a main cutting edge. The second marginal ridge is short and straight and serves as a second cutting edge. The main cutting edge has a leading end portion intersecting the second cutting edge so as to define an obtuse angle therebetween. The front face serves as a rake surface for the main and second cutting edges and has a marginal surface portion disposed adjacent to the second cutting edge and the leading end portion of the main cutting edge. The marginal surface portion is convexly curved so as to slope toward the rear face toward the second cutting edge.

摘要翻译： 用于旋转切割器的可转位刀片插入件包括具有前表面和后表面的板。 前表面具有彼此相交的至少一对第一和第二边缘脊。 当从垂直于前表面的方向观察时，第一边缘脊通常呈弧形，并且用作主切割刃。 第二个边缘边缘是短而直的，可以作为第二个边缘。 主切削刃具有与第二切削刃相交的前端部，以便在它们之间形成钝角。 前表面用作主和第二切割刃的前刀面，并且具有邻近第二切削刃和主切削刃的前端部设置的边缘表面部分。 边缘表面部分是凸形弯曲的，以便朝向第二切割刃的后表面倾斜。

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

IPC分类号： B23C5/10 ,  B23C5/22

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。

公开(公告)号：USD309317S

公开(公告)日：1990-07-17

申请号：US181153

申请日：1988-04-13

申请人： Osamu Tsujimura ,  Tatsuo Arai ,  Masayuki Okawa

设计人： Osamu Tsujimura ,  Tatsuo Arai ,  Masayuki Okawa

公开(公告)号：USD308874S

公开(公告)日：1990-06-26

申请号：US181152

申请日：1988-04-13

申请人： Osamu Tsujimura ,  Tatsuo Arai ,  Masayuki Okawa

设计人： Osamu Tsujimura ,  Tatsuo Arai ,  Masayuki Okawa

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

IPC分类号： B23C5/10 ,  B23C5/22 ,  B23C5/14

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。

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

IPC分类号： B23C5/10 ,  B23C5/22

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。

公开(公告)号：US5332339A

公开(公告)日：1994-07-26

申请号：US900490

申请日：1992-06-18

申请人： Masaaki Nakayama ,  Masayuki Okawa ,  Junichi Saito ,  Tatsuo Arai

发明人： Masaaki Nakayama ,  Masayuki Okawa ,  Junichi Saito ,  Tatsuo Arai

IPC分类号： B23B27/00 ,  B23P15/30 ,  B23B27/18

CPC分类号： B23B27/007 ,  B23B27/00 ,  Y10T407/227 ,  Y10T407/2276 ,  Y10T407/28

摘要： A throw-away cutting tool is disclosed. The tool body of the cutting tool consists of a rod-like shank and a bit mounting component arranged at the front end of the shank. The shank is made of cemented carbide, and is formed with a mounting wall extending toward the front end of the tool body. The bit mounting component is made of steel or sintered metal, and is formed with a bit mounting seat defined by a bottom wall and side walls. In the above cutting tool, high resistance against the cutting force produced by cutting operation can be obtained and separation of the shank and the bit mounting component can be prevented; and high rigidity of the tool body is ensured, the damping capacity of the tool body is increased, and therefore vibration and chatter of the cutting tool can be effectively prevented.

摘要翻译： 公开了一种丢弃的切削工具。 切割工具的工具主体由杆状柄部和布置在柄部前端的钻头安装部件组成。 柄由硬质合金制成，并且形成有朝向工具主体的前端延伸的安装壁。 钻头安装部件由钢或烧结金属制成，并且形成有由底壁和侧壁限定的钻头安装座。 在上述切削工具中，可以获得高切削作用产生的切削力的抵抗力，能够防止柄部和钻头安装部件的分离。 确保了工具体的高刚性，能够提高工具主体的阻尼能力，能够有效地防止切削工具的振动和颤动。

公开(公告)号：US4808045A

公开(公告)日：1989-02-28

申请号：US266339

申请日：1987-06-23

申请人： Osamu Tsujimura ,  Takayoshi Saito ,  Tatsuo Arai ,  Yasuzo Funaki

发明人： Osamu Tsujimura ,  Takayoshi Saito ,  Tatsuo Arai ,  Yasuzo Funaki

IPC分类号： B23B27/16 ,  B23B51/04 ,  B23C5/10 ,  B23C5/20 ,  B23C5/22 ,  B23B51/00

CPC分类号： B23C5/1045 ,  B23B27/1622 ,  B23B27/164 ,  B23B51/048 ,  B23C5/109 ,  B23C5/202 ,  B23C5/2243 ,  B23B2200/083 ,  B23B2200/085 ,  B23B2200/123 ,  B23B2200/165 ,  B23B2200/202 ,  B23B2200/204 ,  Y10T407/1924 ,  Y10T407/1962 ,  Y10T408/895 ,  Y10T408/896

摘要： An end mill includes a body having a core receiving recess and a cutting insert releasably mounted thereon. An upper surface of the insert has a first cutting edge ridge serving as an outer peripheral cutting edge, a second cutting edge ridge providing an end cutting edge and a third cutting edge ridge providing an inner peripheral cutting edge. The upper surface has a corner where the second and third cutting edge ridge intersecting each other. The upper surface is composed of a central portion and a corner portion including the corner, whereby the third cutting edge ridge comprising a first edge portion defined by a ridge of the corner portion and a second edge portion defined by a ridge of the central portion. At least that portion of the corner portion disposed adjacent the central portion is inclined providing a thickness of the insert is progressively reduced toward the corner. The insert has a negative radial rake at the outer peripheral cutting edge and a positive axial rake. The second edge portion extends radially outwardly of the body and in a direction opposite to the direction of rotation of the body from that point where the first and second edge portions intersect. The distance between the corner and the axis is longer than between the axis and a point at which a line extending radially outwardly of the body from the axis and a line on which a corner ridge lies cross at right angles.

摘要翻译： 端铣刀包括具有芯容纳凹部的主体和可释放地安装在其上的切削刀片。 插入件的上表面具有用作外周切削刃的第一切削刃脊，提供端部切削刃的第二切削刃脊和提供内周切削刃的第三切削刃。 上表面具有第二和第三切割刃彼此相交的角部。 上表面由包括角部的中心部分和角部组成，由此第三切割刃脊包括由角部的脊部限定的第一边缘部分和由中心部分的脊部限定的第二边缘部分。 至少设置在中心部分附近的角部的那部分是倾斜的，使得插入件的厚度逐渐减小到拐角。 插入件在外周切削刃处具有负的径向前刀面，并具有正的轴向前刀。 所述第二边缘部分从所述第一和第二边缘部分相交的点向所述主体的径向向外延伸并且沿与所述主体的旋转方向相反的方向延伸。 角部和轴线之间的距离比在轴线与从轴线径向向外延伸的线与角脊线成直角交叉的线之间的距离长。

公开(公告)号：US4808044A

公开(公告)日：1989-02-28

申请号：US43621

申请日：1987-04-28

申请人： Osamu Tsujimura ,  Tatsuo Arai

发明人： Osamu Tsujimura ,  Tatsuo Arai

IPC分类号： B23C5/20 ,  B23C5/22 ,  B23C5/06

CPC分类号： B23C5/2269 ,  B23C5/202 ,  Y10T407/1908 ,  Y10T407/1922 ,  Y10T407/1924 ,  Y10T407/195 ,  Y10T407/196 ,  Y10T407/1962

摘要： An insert cutter includes a cutter body of a generally circular cross-section having an axis of rotation therethrough. The cutter also includes a plurality of cutter inserts releasably mounted on a periphery of the cutter body in circumferentially spaced relation to one another. Each of the cutter inserts has a main cutting edge indexed in its peripheral cutting position. The cutter inserts are disposed so that the indexed main cutting edge of at least one of the cutter inserts is provided with an axial rake angle different from axial rake angles of the indexed main cutting edges of the other cutter inserts.

摘要翻译： 插入式切割器包括具有通过其旋转的轴线的大致圆形横截面的切割器主体。 切割器还包括多个切削刀片，其可释放地安装在切割器本体的周边上彼此周向间隔开。 每个切割刀片具有沿其周边切割位置分度的主切削刃。 切削刀片被设置成使得至少一个刀具刀片的分度主切削刃设置有与其它刀片刀片的指示的主切削刃的轴向前角不同的轴向前角。

公开(公告)号：US4693641A

公开(公告)日：1987-09-15

申请号：US815055

申请日：1985-12-31

申请人： Osamu Tsujimura ,  Takayoshi Saito ,  Tatsuo Arai

发明人： Osamu Tsujimura ,  Takayoshi Saito ,  Tatsuo Arai

IPC分类号： B23B27/16 ,  B23B51/04 ,  B23C5/10 ,  B23C5/20

CPC分类号： B23C5/1045 ,  B23B27/1622 ,  B23B27/164 ,  B23B51/048 ,  B23C5/109 ,  B23B2200/083 ,  B23B2200/085 ,  B23B2200/123 ,  B23B2200/165 ,  B23B2200/202 ,  B23B2200/204 ,  Y10S408/713 ,  Y10T407/1924 ,  Y10T407/1946 ,  Y10T407/1948 ,  Y10T407/23 ,  Y10T407/235 ,  Y10T408/8953

摘要： An end mill comprises an end mill body and a throw-away tip mounted on a forward end of the end mill body so as to be spaced from an axis thereof. A core receiving recess is formed at a center of a forward end face of the end mill body and has a size equal to or greater than a distance between the throw-away tip and the axis of the end mill body. The throw-away tip has an end cutting edge formed by a cutting edge ridge located adjacent the forward end of the end mill body and extending from an outer peripheral side of the end mill body toward an inner peripheral side thereof, and outer and inner peripheral cutting edges respectively formed by cutting edge ridges respectively extending from outer and inner peripheral ends of the end cutting edge toward a rearward end of the end mill body. The end mill body may mount at least two throw-away tips disposed symmetrically with respect to the axis thereof.

摘要翻译： 端铣刀包括立铣刀本体和安装在端铣刀体的前端上以与其轴线间隔开的抛弃尖端。 在端铣刀主体的前端面的中心处形成有芯容纳凹部，其尺寸等于或大于端铣刀体的抛出尖端和轴线之间的距离。 抛弃尖端具有由位于端铣刀主体的前端附近的切削刃脊形成的端部切削刃，并且从端铣刀体的外周侧向其内周侧延伸，外周和内周 切削刃分别由切削刀刃形成，刀尖分别从端部切削刃的外周端和内周端朝向端铣刀体的后端延伸。 端铣刀体可以安装相对于其轴线对称设置的至少两个丢弃尖端。