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公开(公告)号：US5190418A
公开(公告)日：1993-03-02
申请号：US857443
申请日：1992-03-25
申请人： Masaaki Nakayama , Masayuki Okawa , Junichi Saito
发明人： Masaaki Nakayama , Masayuki Okawa , Junichi Saito
CPC分类号： B23C5/207 , B23C5/2269 , B23C2200/125 , B23C2200/201 , B23C2200/203 , B23C2200/205 , B23C2200/243 , B23C2200/283 , B23C2200/365 , Y10T407/1924 , Y10T407/23
摘要： A rotary cutter is disclosed which includes a cutter body having an axis of rotation therethrough and a cutting insert releasably secured to a forward end of the cutter body. The cutting insert has marginal ridges defining a main cutting edge and an auxilliary cutting edge. The main cutting edge is directed radially outwardly of the cutter body while the auxiliary cutting edge is directed axially forwardly of the cutter body. The cutting insert has faces defining a first rake surface and a second rake surface. The first rake surface is disposed adjacent to the main and auxiliary cutting edges such that an axial rake angle is no less than +30.degree.. The second rake surface is disposed between the first rake surface and the auxiliary cutting edge such that an angle, defined between the second rake surface and the axis of rotation of the body as viewed in a cross-section perpendicular to the auxiliary cutting edge, is no larger than .degree.20.degree.. The second rake surface is formed such that a distance, measured in a direction parallel to the first rake surface and defined between the auxiliary cutting edge and the intersection of the first rake surface with the second rake surface, is set so as to range from 0.5 mm to 1.5 mm.
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公开(公告)号：US5188488A
公开(公告)日：1993-02-23
申请号：US911810
申请日：1992-07-10
IPC分类号： B23C5/10
CPC分类号： B23C5/10 , Y10T407/1948 , Y10T407/1954 , Y10T407/1966
摘要： An end mill is disclosed which includes a tool body having a shaft-like shape. The tool body has a cutting edge portion formed at one end thereof. The cutting edge portion has a plurality of circumferential cutting edges formed on the circumference thereof along the longitudinal axis of the tool body. The end mill is characterized in that the cutting edge portion has the circumferential surface thereof which includes rake faces and flanks. Each of the rake faces adjoins one of two adjacent circumferential cutting edges. Each of the flanks intersects with one of the rake faces at one end and adjoins the other of the two adjacent circumferential cutting edges at the other end. The rake faces have a rake angle arranged between a range of 5.degree. to -45.degree. at a cross section perpendicular to the axis of the tool body. The flanks have a relief angle arranged between a range of 20.degree. to 45.degree. at a cross section perpendicular to the axis of the tool body. In one embodiment, the circumferential surface of the cutting edge portion is formed of an alternately connected plurality of concave surfaces receding inwardly toward the center of the cutting edge portion, with different ranges of rake and relief angles.
摘要翻译： 公开了一种立铣刀，其包括具有轴状形状的工具主体。 工具主体的一端形成有切削刃部。 切削刃部具有沿工具主体的纵向轴线形成在其圆周上的多个周向切削刃。 端铣刀的特征在于，切削刃部具有包括前刀面和侧面的圆周面。 每个前刀面邻接两个相邻的周向切削刃之一。 每个侧面在一端与一个前刀面相交，并且在另一端处与两个相邻的周向切削刃中的另一个相邻。 前刀面在垂直于刀具主体轴线的横截面上具有排列在5°至-45°范围内的前角。 侧面在垂直于工具主体的轴线的横截面处具有设置在20°至45°之间范围内的倾斜角。 在一个实施例中，切割边缘部分的圆周表面由交替连接的多个凹面形成，所述多个凹面朝向切削刃部分的中心向内退回，具有不同的前角和倾斜角度。
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公开(公告)号：US5314273A
公开(公告)日：1994-05-24
申请号：US851204
申请日：1992-03-13
申请人： Masaaki Nakayama , Masayuki Okawa , Junichi Saito
发明人： Masaaki Nakayama , Masayuki Okawa , Junichi Saito
IPC分类号： B23B29/02 , B23B31/02 , B23B31/107 , B23B51/00
CPC分类号： B23B29/022 , B23B31/026 , B23B31/1075 , Y10T279/16 , Y10T279/17821 , Y10T408/90993 , Y10T408/95 , Y10T408/957
摘要： The present invention relates to a cutting tool, especially the cutting tool having a head segment releasably attached to a shank segment. According to one aspect of this invention there is provided a cutting tool comprising: (i) a head segment rotatable around an axis thereof and a forward end portion having at least one cutting-insert receiving seat and a rearward end portion; (ii) a shank segment rotatable around an axis thereof having a forward end portion adapted to be coaxially joined with the rearward end of the head segment and a rearward end portion adapted to be fixedly secured to a machine spindle; (iii) an engaging hole coaxially formed on one of the above segments, which is provided with at least two internal threads communicating between the hole and the external surroundings through a peripheral surface of the segment; (iv) an engaging projection coaxially formed on other one of the segments and engagingly fitted into the hole; and (v) clamp screws respectively threaded through each internal thread, in which bottom ends of the clamp screws are contacted with a surface of the engaging projection.
摘要翻译： 切割工具技术领域本发明涉及一种切割工具，特别是切割工具，其具有可释放地附接到柄部分的头部分段。 根据本发明的一个方面，提供了一种切削工具，其包括：（i）可围绕其轴线旋转的头部段和具有至少一个切削刀片接收座和后端部的前端部; （ii）可绕其轴线旋转的柄段，其具有适于与头部段的后端同轴接合的前端部分，以及适于固定地固定到机床上的后端部分; （iii）同轴地形成在上述段中的一个上的接合孔，所述接合孔设置有至少两个内螺纹，所述至少两个内螺纹通过所述段的外周表面在所述孔和所述外部环境之间连通; （iv）同轴地形成在所述段中的另一个部分上且接合地装配到所述孔中的接合突起; 和（v）夹紧分别穿过每个内螺纹的螺钉，其中夹紧螺钉的底端与接合突起的表面接触。
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公开(公告)号：US5186583A
公开(公告)日：1993-02-16
申请号：US824395
申请日：1992-01-23
申请人： Masaaki Nakayama , Masayuki Okawa
发明人： Masaaki Nakayama , Masayuki Okawa
CPC分类号： B23C5/2269 , B23C5/006 , Y10T407/1918 , Y10T407/1922 , Y10T407/28
摘要： An inserted tooth rotary cutter is disclosed which includes a tool body having an axis of rotation therethrough and a plurality of indexable cutting inserts. The tool body is defined by forward and rearward axial faces and a circumferential surface lying between the forward and rearward axial faces. The tool body has a plurality of insert receiving recesses formed in the circumferential surface in circumferentially spaced relation to one another and has a mounting bore formed coaxially therewith. Furthermore, the tool body has a plurality of through holes formed in circumferentially spaced relation to one another. Each through hole is disposed between two adjacent insert receiving recesses and opens to the circumferential surface and the forward axial face. Each insert is releasably secured to a respective insert receiving recess.
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公开(公告)号：US5156503A
公开(公告)日：1992-10-20
申请号：US544176
申请日：1990-06-26
CPC分类号： B23B27/1662 , B23B27/007 , Y10S408/713 , Y10T408/865 , Y10T408/89
摘要： A boring bar tool for use with a tip is disclosed which has a tool body. The tip is mounted to one side of a forward end of the nose of the tool body. A neck is formed at a proximal end of the nose, and a shank in the form of a shaft is formed at a proximnal end of the neck. The neck has a cross-sectional area in a plane perpendicular to an axis of the shank which is larger than the cross-sectional area of the shank in the plane.
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公开(公告)号：US5193945A
公开(公告)日：1993-03-16
申请号：US840086
申请日：1992-02-24
申请人： Masaaki Nakayama , Masayuki Okawa , Junichi Saito
发明人： Masaaki Nakayama , Masayuki Okawa , Junichi Saito
CPC分类号： B23B27/1666 , B23C5/003 , B23C5/2269 , B23C2210/166 , Y10T407/13 , Y10T407/22 , Y10T407/2272
摘要： A cutting tool having a positioning block inserted between the cutting insert and the insert-receiving seat is disclosed. The disclosed cutting tool demonstrates excellent resistance to damage by severe vibration caused by the milling process. The cutting tool of the present invention comprises (a) a tool body having a recess formed at a forward end thereof and defining a insert-receiving seat; (b) a cutting insert; (c) a positioning block to be placed between the cutting insert and said insert-receiving seat, having a top and bottom faces and having a hardness thereof which is lower than that of a surface of an insert-receiving seat; and (d) clamp means for securing the cutting insert and the positioning block on the insert-receiving seat. The above described positioning block is able to absorb some extent of vibration of the cutting insert during the milling process. According to the present invention, there is also provided the cutting tool in which a positioning block has two layers. A hardness of a surface of the insert-receiving seat is higher than that of the first layer but is lower than that of the second layer.
摘要翻译： 公开了一种具有插入切削刀片和刀片接收座之间的定位块的切削工具。 所公开的切削工具通过铣削过程引起的严重振动表现出优异的耐损伤性。 本发明的切削工具包括（a）工具主体，其具有形成在其前端并形成插入件接收座的凹部; （b）切削刀片; （c）定位块，其被放置在所述切削刀片和所述刀片接收座之间，具有顶面和底面，并且其硬度低于插入物接收座的表面的硬度; 和（d）用于将切削刀片和定位块固定在刀片接收座上的夹紧装置。 上述定位块在铣削过程中能够吸收切削刀片的一定程度的振动。 根据本发明，还提供了一种定位块具有两层的切削工具。 插入座接受座的表面的硬度高于第一层的硬度，但低于第二层的硬度。
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公开(公告)号：US5100268A
公开(公告)日：1992-03-31
申请号：US537949
申请日：1990-06-14
IPC分类号： B23B27/16
CPC分类号： B23B27/1677 , Y10T407/2276 , Y10T407/2286
摘要： An insert clamped tool includes a tool holder, a cutting insert, a clamp and a pressing mechanism for pressing the clamp to urge the cutting insert against the bottom and the side walls of the insert-receiving pocket. The tool holder includes an insert-receiving pocket formed at a forward end thereof and having a bottom and side walls. The tool holder has an inclined surface sloping inward in a direction away from the insert-receiving pocket. The cutting insert is received on the insert-receiving pocket. The clamp is held into abutting engagement with the cutting insert. The clamp has a sliding face held in contacting engagement with the inclined surface of the tool holder.
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公开(公告)号：US5391022A
公开(公告)日：1995-02-21
申请号：US215578
申请日：1994-03-22
申请人： Masaaki Nakayama , Masayuki Okawa , Junichi Saito
发明人： Masaaki Nakayama , Masayuki Okawa , Junichi Saito
IPC分类号： B23B29/02 , B23B31/02 , B23B31/107 , B23B51/00
CPC分类号： B23B29/022 , B23B31/026 , B23B31/1075 , Y10T279/16 , Y10T279/17821 , Y10T408/90993 , Y10T408/95 , Y10T408/957
摘要： The present invention relates to a cutting tool, especially the cutting tool having a head segment releasably attached to a shank segment. According to one aspect of this invention there is provided a cutting tool comprising: (i) a head segment rotatable around an axis thereof and a forward end portion having at least one cutting-insert receiving seat and a rearward end portion; (ii) a shank segment rotatable around an axis thereof having a forward end portion adapted to be coaxially joined with the rearward end of the head segment and a rearward end portion adapted to be fixedly secured to a machine spindle; (iii) an engaging hole coaxially formed on one of the above segments, which is provided with at least two internal threads communicating between the hole and the external surroundings through a peripheral surface of the segment; (iv) an engaging projection coaxially formed on other one of the segments and engagingly fitted into the hole; and (v) clamp screws respectively threaded through each internal thread, in which bottom ends of the clamp screws are contacted with a surface of the engaging projection.
摘要翻译： 切割工具技术领域本发明涉及一种切割工具，特别是切割工具，其具有可释放地附接到柄部分的头部分段。 根据本发明的一个方面，提供了一种切削工具，其包括：（i）可围绕其轴线旋转的头部段和具有至少一个切削刀片接收座和后端部的前端部; （ii）可绕其轴线旋转的柄段，其具有适于与头部段的后端同轴接合的前端部分，以及适于固定地固定到机床上的后端部分; （iii）同轴地形成在上述段中的一个上的接合孔，所述接合孔设置有至少两个内螺纹，所述至少两个内螺纹通过所述段的外周表面在所述孔和所述外部环境之间连通; （iv）同轴地形成在所述段中的另一个部分上且接合地装配到所述孔中的接合突起; 和（v）夹紧分别穿过每个内螺纹的螺钉，其中夹紧螺钉的底端与接合突起的表面接触。
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公开(公告)号：US5201614A
公开(公告)日：1993-04-13
申请号：US846617
申请日：1992-03-05
申请人： Masaaki Nakayama , Masayuki Okawa
发明人： Masaaki Nakayama , Masayuki Okawa
CPC分类号： B23C5/1045 , B23C5/207 , B23C5/2243 , B23C2200/203 , B23C2250/12 , Y10T407/1922 , Y10T407/194 , Y10T407/1948 , Y10T407/2286
摘要： A rotary cutting tool is disclosed which has a tool body, a cutting insert, a clamp member and a clamp screw. The tool body has an insert-receiving recess and a clamp member-receiving aperture formed in an outer surface thereof. The insert-receiving recess has a bottom and at least two bearing walls disposed so as to be inclined with respect to each other. The clamp member-receiving aperture is disposed so as to be communicated with the recess. The cutting insert includes a plate having a front face serving as a rake surface and a rear face. The cutting insert is releasably received in the recess with the rear face being mated with the bottom, in such a manner that the front face is partly located in the clamp member-receiving aperture. The clamp member has an axis therethrough and an engagement portion. The clamp member is releasably accommodated in the clamp member-receiving aperture so as to be axially slidable, with the engagement portion being held in abutment with the front face of the cutting insert. The clamp screw is threaded into the tool body so as to be held in abutting engagement with the clamp member, to thereby press the clamp member against the insert. The clamp screw is preferably arranged such that an angle defined between the axis of the clamp member and the front face of the insert ranges from 30 degrees to 60 degrees. The clamp member is preferably arranged such that as viewed from the rake surface, the clamp member extends in a direction toward the at least two bearing walls.
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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
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。
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