• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SUMMARY The present invention describes a cutting insert which is capable of successively performing a cutting process and a chamfering process after mounting in the tool holder. An insert according to the present invention comprises a cutting section pre-cutting a rotating workpiece; and a chamfer section having a width greater than that of the separating section, the chamfering section being formed integrally with the co-separating section at a rear side of the separating section to chamfer the workpiece cut with the separating section. A cutting edge to be brought into contact with the workpiece is formed at an upper edge of a front end surface of the cutting section for cutting the workpiece, and the chamfer section has a step on at least one lateral side and the front surface of the step is formed by a curved surface to form an upper edge to chamfer an edge portion on a cut surface of the workpiece. 76139 filed description; 2009-12-07
    公开号:SE535067C2
    申请号:SE0901530
    申请日:2008-04-10
    公开日:2012-04-03
    发明作者:Hong Sik Park；Sung Hyup Park
    申请人:Taegu Tec Ltd；
    IPC主号:
    专利说明:

    DESCRIPTION OF THE INVENTION Accordingly, the present invention is contemplated for solving the aforementioned problems in a process of making an article that requires both separation and chamfering processes, and an object of the present invention is to provide an insert capable of perform one after the other a separation process and a chamfering process.
    An insert according to the present invention comprises a separating section for cutting a rotating workpiece; and a chamfer section having a width greater than that of the separating section, the chamfering section being formed integrally with the separating section at a rear side of the separating section to chamfer the workpiece cut with the separating section.
    A cutting edge to come into contact with the workpiece is formed at an upper edge of a front end surface of the separating section for cutting the workpiece, and the bevel section having a larger width has a step on at least one lateral side and the front surface of the step is formed by a curved surface to form an upper edge for chamfering an edge portion on a cut surface of the workpiece.
    The separating section comprises a groove formed on an upper surface of a front part thereof in a longitudinal direction and the front end of the groove corresponds to a cutting edge. In addition, the separating section comprises a protrusion formed at the rear part of the joint, and the front surface of the protrusion is formed by an upwardly sloping surface. 10 15 20 25 30 535 06 Beneficial Effects The insert of the present invention having the structure and function as described above has the advantages of the following.
    Since the single insert is used to perform the separating process as well as the chamfering process, there is no need to remove the insert for the separating process from the tool holder after the separating process and to mount the insert for the chamfering process. That is, after the off-V separation process for a workpiece is completed, the chamfering process can be performed immediately without replacing the insert, and in this way the total treatment time can be significantly reduced.
    In addition, since the insert for the separation process and the insert for the chamfering process are manufactured as a single insert, a cost and time for manufacturing the insert can be significantly reduced.
    Brief Description of the Drawings Fig. 1 is a perspective view of an insert according to the present invention; Fig. 2 and Fig. 3 are side views and plan views of an insert according to the present invention: Fig. 4 is a cross-sectional view taken along the line A-A in Fig. 3; and 10 15 20 25 30 535 G6 Fig. 5 and Fig. 6 are plan views illustrating a process for machining a workpiece using a cutter according to the present invention.
    Best Mode for Carrying Out the Invention In the following, the present invention is described in detail with reference to the accompanying drawings.
    Fig. 1 is a perspective view of an insert according to the present invention and Fig. 2 and Fig. 3 are a side view and a plan view of an insert according to the present invention. An insert 100 according to the present invention is a single body made of cemented carbide joined carbide material and made by a powder metallurgy process such as a molding process, a sintering process, a milling process and a coating process. The insert 100 of the present invention can be divided into a separating section 10 formed at a front side and a chamfer section 20 formed at a rear side and having a height substantially the same as that of the separating section 10.
    The structure and function of each section constituting the insert 100 are described in detail below.
    Separation section 10 The separation section 10 having a certain width and height is a section provided for cutting a workpiece. A cutting edge 11 is formed at an upper edge of a front end surface of the separating section 10 and this cutting edge is brought into contact with a rotating workpiece and cuts the rotating workpiece. A cutter 12 having a certain depth is formed on an upper surface of a front part of the separating section 10 in the longitudinal direction.
    The front end of the groove 12 corresponds to the cutting edge 11. A protrusion 13 having a certain height is formed at a rear side of the groove 12 along the entire width of the separating section 10. A front surface 13A of the protrusion is formed by an upwardly sloping surface.
    In this structure of the separating section 10, a buckle generated when a workpiece is machined with the cutting edge 11 is guided along the notch 12 and the chip is then moved upwards along the inclined surface 13A of the projection 13, thus preventing contact between the chip and a tool holder. (not shown). In addition, the chip released from the groove 12 is bent and then broken while the chip is moved along the front inclined surface 13A of the protrusion 13.
    Bevel section 20 The bevel section 20 formed integrally with a rear side of the partition section 10 has a width greater than that of the partition section 10. The bevel section 20 having a width wider than that on the partition section 10 has a step on at least one lateral side, the the front surface formed by the step is preferably formed as curved surfaces 21A and 21B having a certain curvature. The bend on each of the curved surfaces 21A and 21B corresponds to a constructed bend on an edge portion of the workpiece to be chamfered. Although the front surface of the step may have an inclined planar surface or a combination of inclined plane and curved surface, in accordance with the desired edge shape of the workpiece, an example of curved front surfaces formed on both lateral surfaces is described below. the sides of the bevel section 20. 10 15 20 25 30 535 ÜB Upper edges of the curved surfaces 21A and 21B act as the bevel edges which are in contact with the edge portions of the cutting surface of the workpiece and chamfer the edge portions of the workpiece.
    Here, as shown in Fig. 3, it is preferred that the curved surfaces 21A and 21B of the chamfer section 20 be inclined toward the separation section 10 with respect to the vertical line.
    Due to such a structure, upper edges of the curved surfaces 21A and 21B are provided with a more acute angle of the cutting edges towards the edge portions of the workpiece.
    An upper surface of the chamfer section 20, preferably upper surfaces on both lateral sides, i.e. upper sides of the portions under which the curved front surfaces 21A and 21B are formed are formed by inclined surfaces 21A-1 and 21B-2 which slope upwards-backwards. In the structure with the chamfer section 20 as described above, a chip is generated when the workpiece is machined by moving the cutting edges of the upper ends of the curved surfaces 21A and 21B upwardly along the inclined surfaces 21A-1 and 21B-1. On the other hand, a plurality of serrations 22 may be formed on an entire bottom surface of the chamfer section 20 and the separating section 10 or / and a portion of the upper surface of the chamfer section 20 (ie an upper surface behind the protrusion 13) in the longitudinal direction. The serrations 22 provide a secure grip between the insert having a small width and length and the tool holder. On the other hand, Fig. 4 is a cross-sectional view taken along the line A-A in Fig. 3 and shows the insert according to the present invention together with upper and lower grippers. 10 15 20 25 30 535 ÜB As shown in Fig. 1 and Fig. 4, it is preferred that an upper gripping groove 25 is formed on a portion of an upper surface of the chamfer section 20, i.e. an upper surface behind the projection 13 along a center line extending in the longitudinal direction and / or a lower gripping vessel 26 formed on an entire bottom surface of the chamfer section 20 and the separating section 10, respectively, along a center line extending in the longitudinal direction. tudinal direction, said that the insert 100 can be more securely attached to the tool holder by the upper holder G1 and the lower holder G2. In addition, although not shown in the drawings, it is possible to form a plurality of serrations on surfaces of the upper and lower gripping grooves 25 and 26 to provide a more secure grip.
    It is preferred that each of the upper and lower gripping grooves 25 and 26 be formed by a double groove formed by overlapping two grooves (as shown in Fig. 4) each having a different curvature. In the double groove, axes are formed in the longitudinal direction at both boundary portions between two grooves with different bending and the axes act as contact surfaces with end portions of the grippers G1 and G2. This structure is described in greater detail below.
    The upper gripping crowd 25 comprises a first crowd 25-1 and a second crowd 25-2. The first crowd 25-1 having a first bend is formed on an upper surface of the chamfer section 20 in the longitudinal direction and a second crowd 25-2 having a second bend larger than the first bend of the first crowd 25-1. is formed on a bottom surface of the first mound 25-1 along the first mound. Accordingly, the axes P11 and P12 are formed on both the boundary portions between the first group 25-1 and the second group 25-2 in the longitudinal direction. 10 15 20 25 30 535 GE In addition, the lower gripping groove 26 includes a third insert 26-1 and a fourth insert 26-2. The third groove 26-1 having a third bend is formed on an entire bottom surface of the separating section 10 and the chamfer section 20 in the longitudinal direction, and the fourth group 26-2 having a fourth bend larger than the third the third bend of the notch 26-1 is formed on an upper surface of the third notch 26-1 along the third inverted notch 26-1. Accordingly, the axes P21 and P22 are formed on both the boundary portions between the third notch 26-1 and the fourth notch 26-2 in the longitudinal direction.
    When the insert 100 is mounted on the tool holder, the upper gripper G1 and the lower gripper G2 on the tool holder come into contact with the upper and lower gripping grooves 25 and 26 formed on an upper surface and a lower surface, respectively, of the insert 100, and then pressurize the insert. 100. At this time, it is preferable that the upper gripper G1 comes into contact with the axes P11, P12 formed in the longitudinal direction on both the boundary portions of the first portion 25-1 and the second portion 25-2 formed on an upper surface of the chamfer section 20 and the lower gripper G2 come into contact with the axes P21 and P22 formed in the longitudinal direction on both the boundary portions of the third notch 26-1 and the fourth notch 26-2 formed on a lower surface of the chamfer section 20. To obtaining the above structure, it is preferred that a bend of each end portion of the grippers G1 and G2 be greater than the first bend and the third bend but smaller than the second bend and the fourth bend. jningen.
    As described above, since the grippers G1 and G2 are in contact with the insert 100 at two contact points (ie P11, P12 and P21, P22, respectively), a variation of the contact points caused by a machining error can be prevented and it is possible to maintain the balance between the forces exerted on a right side and on a left side of the insert 100 and in this way the insert 100 can be mounted more securely and precisely on the tool holder.
    Here, it is preferable that the first bend is made the same as the third bend and the second bend is made the same as the fourth bend to use the gripper end with the same specification for both the upper gripper G1 and the lower gripper G2.
    Functions of the insert having the structure as described above are shown with reference to Fig. 1 to Fig. 3, Fig. 5 and Fig. 6.
    Fig. 5 is a plan view for showing a process for cutting (separating) a workpiece 200 by means of the insert 100 according to the present invention, and Fig. 6 is a plan view showing a chamfering process performed after the cutting process is completed. For simplicity, the holder supporting the insert is not shown in Fig. 5 and Fig. 6.
    The insert 100 of the present invention is mounted in the tool holder (not shown) by a clamping means and the tool is then moved against the rotating workpiece 200. Then the tool is moved to the workpiece 200 and thus cuts the cutting edge 11 formed at a front end of the cutting section 10 of the insert 100, the workpiece 200 (a condition in Fig. 5).
    A chip generated from the workpiece 200 by the cutting edge 11 of the separating section 10 is guided in the notch 12 formed on an upper surface of the front of the cutting section 10, which chip is then detached from the notch 12 and comes into contact with the protrusion 13 10 15 20 25 30 535 D67 10 inclined surface 13A. The chip is broken as it is moved along the inclined surface 13A of the projection 13.
    As the separation process described above proceeds, the workpiece 200 is completely cut by the insert 100. And the curved surfaces 21A and 21B formed at front surfaces on both sides of the chamfer section 20 then come into contact with the edge portions of cut surfaces of the workpiece 200 (a condition in Fig. 6).
    In this state, the workpiece 20 is continuously rotated, edges of both cut surfaces of the workpiece 200 come into contact with upper end edges (chamfered edges) of the curved surfaces 21A and 21B of the chamfer section 20 and then machined. Accordingly, the edges of the both cut surfaces of the workpiece 200 are machined (chamfered) to the shape having the same bend as that of the curved surfaces 21A and 21B.
    The chips generated by the chamfer edges of the chamfer section 20 are guided along the inclined surfaces 21A-1 and 21B-1 formed above the curved surfaces 21A and 21B and then detached from the insert 100.
    Due to such inclined surfaces 21A-1 and 21B-1, the chips generated in the chamfering process do not enter between the workpiece 200 and the insert 100 (especially the chamfer section 20).
    Consequently, the machining process is not adversely affected by chip-induced problems (for example, the generation of defects on cut surfaces of the workpiece). Although embodiments have been described with reference to the preferred embodiments thereof, it should be understood that several other modifications and embodiments may be devised by those skilled in the art that will fall within the spirit and scope of the principles of this specification. More specifically, various variations and modifications are possible in component parts and / or arrangements of the present combination arrangement within the scope of the description, the drawings and the appended claims. In addition to variations and modifications of the component parts and / or arrangements, alternative uses will also be apparent to those skilled in the art.
    权利要求:
    Claims (7)
    [1]
    A cutter, comprising: a separating section (10) for cutting a rotating workpiece; and a chamfer section (20) having a width greater than that of the separating section (10), the chamfering section (20) being formed integrally with the separating section (10) at a rear side of the separating section (10) to chamfer the workpiece cut with the separating section (10). 10), wherein a cutting edge (11) to come into contact with the workpiece is formed at an upper edge of a front end surface of the separating section (10) for cutting the workpiece, and wherein the chamfering section (20) with a larger width has a step on at least one lateral side thereof, and wherein the front surface of the step has an upper edge for chamfering an edge portion on a cut surface of the workpiece, characterized in that the upper surface of the chamfer section (20) and the lower surface of the chamfer section and the separating section (10 ) have gripping grooves (25, 26) along the center lines extending in the longitudinal direction, and each of the gripping grooves (25, 26) being formed by a double cut formed by overlapping two grooves (25-1, 25-2, 26-1, 26-2) with two different curves and formed with two ridges (P11, P12, P21, P22) at both boundary portions between two grooves (25- 1, 25-2, 26-1, 26-2) in the longitudinal direction.
    [2]
    The insert of claim 1, wherein the front surface of the step is a curved surface. 10 15 535 06 13
    [3]
    An insert according to claim 1, wherein the separating section comprises an insert formed on an upper surface of a front portion thereof in a longitudinal direction and the front end of the insert corresponds to a cutting edge.
    [4]
    The insert of claim 1, wherein the separating section comprises a protrusion formed at the rear end of the notch and the front surface of the protrusion is formed as an upwardly sloping surface.
    [5]
    A insert according to any one of claims 1 to 4, wherein the chamfer section has an upper surface which is inclined upwards-backwards.
    [6]
    An insert according to claim 6, wherein the gripping notch has a plurality of serrations formed on an inner surface thereof.
    [7]
    An insert according to any one of claims 1 to 4, wherein the front surface of the step is inclined towards the separating section with respect to a vertical line.
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    同族专利:
    公开号 | 公开日
    WO2008140191A1|2008-11-20|
    SE0901530L|2009-12-07|
    CN101678464B|2012-05-02|
    CN101678464A|2010-03-24|
    KR20080099471A|2008-11-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    IL84078A|1987-10-02|1990-09-17|Iscar Ltd|Cutting insert|
    IL91575A|1989-09-08|1992-07-15|Iscar Ltd|Cutting insert having a chip former|
    DE19527696A1|1995-07-28|1997-01-30|Widia Gmbh|Lancing insert|
    SE512094C2|1998-05-22|2000-01-24|Sandvik Ab|Cut for groove knitting|
    CN2673542Y|2004-02-21|2005-01-26|洛阳轴承集团有限公司|Composite round inverted angle knife for processing bearing jacket ring|
    JP2007069291A|2005-09-06|2007-03-22|Mitsubishi Materials Corp|Cutting insert and insert attaching and detaching type cutting tool|
    JP2007105844A|2005-10-14|2007-04-26|Nidec Tosok Corp|Cutting tool|KR101130466B1|2009-01-23|2012-04-12|대구텍 유한회사|Cutting insert, tool holder and combination of the cutting insert and the tool holder|
    JP5589425B2|2010-02-18|2014-09-17|三菱マテリアル株式会社|Cutting inserts for grooving and parting off|
    EP2868409B1|2012-06-29|2017-11-29|Kyocera Corporation|Cutting insert, cutting tool, and method for producing cut/machined object using same|
    CN103480872B|2013-09-23|2016-08-10|柳燕明|Cut off chamfering one lathe tool and the pipe cutting machine of clamped one time cut-out chamfering simultaneously|
    DE102014102019A1|2014-02-18|2015-08-20|Hartmetall-Werkzeugfabrik Paul Horn Gmbh|Tool for machining a workpiece|
    EP3260225A1|2016-06-20|2017-12-27|Sandvik Intellectual Property AB|Turning insert|
    IT201600110252A1|2016-11-02|2018-05-02|Dario Ivaldi|Saw blade and cut-off machine|
    US10493539B2|2017-02-16|2019-12-03|Iscar, Ltd.|Tool body having an inner insert receiving pocket with resilient clamping member, cutting tool and chamfering cutting insert therefor|
    法律状态:
    2013-12-03| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020070045032A|KR20080099471A|2007-05-09|2007-05-09|Insert for parting and chafering|
    PCT/KR2008/002007|WO2008140191A1|2007-05-09|2008-04-10|Insert for parting and chamfering|
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