• 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:
    [00040] TOOLHOLDER AND CUTTING INSERT THEREFOR ABSTRACT OF THE DISCLOSURE A cutting tool (10) includes a toolholder (12) and a cuttinginsert (14) removably securable in the toolholder. Thecutting insert (14) includes a lower clamping surface (18) witha V-shaped clamping surface (32, 34) on each side of acentral portion (28). The toolholder includes a lowerclamping surface (56) with an inverted V-shaped clampingsurface (62, 64) on each side of the bottom surface (60)formed by a primary clamping surface (62a, 64a) and asecondary clamping surface (62b, 64b). The secondaryclamping surfaces (32b, 34b) of the cutting insert (14)contacts the secondary clamping surfaces (62b, 64b) of thetoolholder (12) when the cutting tool (10) is brought into aclamped position due to interference between the toolholder(12) and the cutting insert (14), thereby providing a minimumof four clamping surfaces when in the clamped position.
    公开号:SE1450032A1
    申请号:SE1450032
    申请日:2014-01-15
    公开日:2014-07-17
    发明作者:Igor Kaufmann；Scott Etling
    申请人:Kennametal Inc；
    IPC主号:
    专利说明:

    [5] [0005]
    [6] [0006]
    [7] [0007]
    [8] Cracks, by providing a larger surface area for spreading the tensile force.
    [10] FIGURE 1 shows a partial perspective view of a cutting tool, comprising a tool holder and a cutting insert according to an embodiment of the invention,
    [11] FIGURE 2 shows a partial side view of the cutting tool of FIG. 1,
    [12] FIGURE 3 shows a perspective view of the cutting insert according to an embodiment of the invention,
    [13] FIGURE 4 shows a top view of the cutting insert in FIG. 3,
    [14] FIGURE 5 shows a side view of the cutting insert in FIG. 3,
    [15] FIGURE 6 shows an overview of the end of the cutting insert in FIG. 3,
    [16] FIGURE 7 shows an enlarged overview of the clamping surfaces of the cutting insert in FIG. 3,
    [17] FIGURE 8 shows a partial cross-sectional view of the tool holder according to an embodiment of the invention,
    [18] FIGURE 9 is an overview of the end of the tool holder in FIG. 8,
    [19] FIGURE 10 is an enlarged view of the clamping surfaces of the tool holder of FIG. 8,
    [20] FIGURE 11 is an enlarged view of the tool holder and cutting insert when the cutting tool is in a non-clamping position and
    [21] FIGURE 12 is an enlarged view of the tool holder and cutting insert when the cutting tool is in a clamping position.
    [22] Referring to FIGURES 1 and 2, a cutting tool 10 includes a tool holder 12 and a cutting insert 14, which are mounted therein. the tool holder 12 is usually made of steel and the cutting insert 14 is usually made _4_
    [23] [Ooo241 [ooo251] by compression molding and sintering of a cemented carbide, such as tungsten carbide, and may or may not have a coating.
    [26] Secondary clamping surface 34b and a pitch 34c between them. In the illustrated embodiment, the primary and secondary clamping surfaces 34a, 34b are substantially planar. The primary clamping surface 34a is formed at a relatively large angle 36 relative to a minor plane P2 perpendicular to the primary plane P1, while the secondary clamping surface 34b is formed at a relatively small angle 38 relative to the minor plane P2. In another embodiment, the angle 36 is in a range between about 110 degrees to about 150 degrees, and the angle 38 is in a range between about 0 degrees and about 30 degrees. In other words, the angle 38 formed by the secondary clamping surface 34b is smaller than the angle 36 formed by the primary clamping surface 34a. As described below, the primary clamping surface 34a defines a primary contact area with the pocket, while the secondary clamping surface 34b defines a secondary contact area with the pocket for a minimum of four (4) contact areas on the cutting insert 14.
    [28] [00028]
    [29] [00029]
    [30] 44 in a range between about 40 degrees and about 120 degrees.
    [31] [00031]
    [32] Against the insert, the gap opening towards a front end 52 of the tool holder 12. The main part 48 comprises an upper clamping surface 54 and a lower clamping surface 56, which have a common longitudinal direction from a front end 57 to a rear end 60 of the tool holder. lower clamping surface 56. A resilient slot 62 which divides the main body 48 into an upper clamping jaw 64 and a lower base jaw 65 extends rearwardly from the slot 50 to receive the insert.
    [33] Which is formed by the secondary clamping surface 64b smaller than the angle 66 formed by the primary clamping surface 64a. As described below, the primary clamping surface 64a defines a primary contact surface with the pocket, with the secondary clamping surface 64b defining a secondary contact surface with the pocket for a minimum of four (4) contact areas on the tool holder 12. It should be noted that the angle 68 may be substantially identical. , with not necessarily equal to, the angle 38 of the cutting insert 14.
    [36] Deviate slightly from wedge angle 44. For example, wedge angle 74 may deviate from the angle 44 of cutting insert 14 by 10.5 degrees.
    [38] [00038]
    [39] 14. This interference is caused by the very small difference in width between the V-shaped clamping surfaces 32, 34 of the cutting insert 14 and the clamping surfaces 62, 64 in the form of an upside-down V of the tool holder 12.
    As a result of this deformation of tool holder 12 due to the interference between the tool holder 12 and the cutting insert 14, the secondary clamping surfaces 32b, 34b of the cutting insert 14 come into contact with the secondary clamping surfaces 62b, 64b of the tool holder 12, resulting in a minimum of four (4) contact surfaces. between the tool holder 12 and the cutting insert 14. Simulations with the finite element method have shown that the provision of at least four (4) clamping surfaces provides adequate support for the cutting insert against lateral loading and movement in the vertical direction, which is not the case with a conventional tool holder having fewer contact areas.
    Documents, patents and patent applications referred to in this text are hereby incorporated by reference.
    Although the invention has been specifically described in connection with certain specific embodiments thereof, it should be understood that this has been done for illustrative purposes and not to limit the invention, and the scope of the appended claims is to be construed as broadly as prior art allows. _11-
    权利要求:
    Claims (15)
    [1] 1. A cutting tool (10), comprising: a toolholder (12) and a cutting insert (14) removablysecurable in the toolholder; the cutting insert comprising: upper and lower clamping surfaces (16, 18),peripheral side surfaces (20) extending between the upper and lowersurfaces (16, 18) and front and rear end surfaces (22, 24) extendingbetween the peripheral side surfaces (20) with a longitudinal axis (26)passing therebetween, the lower clamping surface (18) of the cutting insertincluding a central portion (28) and a V-shaped clamping surface (32, 34)on each side of the central portion (28), each V-shaped clamping surface(32, 34) formed by a primary clamping surface (32a, 34a), a secondaryclamping surface (32b, 34b) and a vertex (32c, 34c) therebetween; thetoolholder comprising: a head portion (48) with an insert-receiving slot (50)opening out to a forward end (52) of the toolholder, the head portion (48)including an upper clamping surface (54) and a lower clamping surface(56), the lower clamping surface (56) including a central portion (58) with asubstantially planar bottom surface (60) and an inverted V-shapedclamping surface (62, 64) on each side of the bottom surface (60), eachinverted V-shaped clamping surface (62, 64) formed by a primary clampingsurface (62a, 64a), a secondary clamping surface (62b, 64b) and a vertex(62c, 64c) therebetween, wherein the primary clamping surfaces (32a, 34a) of the cuttinginsert (14) contacts the primary clamping surfaces (62a, 64a) of thetoolholder (12) and a gap (76) exists between the secondary clampingsurfaces (32b, 34b) of the cutting insert (14) and the secondary clampingsurfaces (62b, 64b) of the toolholder (12) due to a difference in widthbetween the V-shaped clamping surfaces (32, 34) of the cutting insert (14) _12- and the inverted V-shaped clamping surfaces (62, 64) of the toolholder(12) when the cutting tool (10) is in the unclamped position, and wherein the secondary clamping surfaces (32b, 34b) of the cuttinginsert (14) contacts the secondary clamping surfaces (62b, 64b) of thetoolholder (12) when the cutting tool (10) is brought into a clamped positiondue to interference between the toolholder (12) and the cutting insert (14),thereby providing a minimum of four clamping surfaces when in the clamped position.
    [2] 2. The cutting tool according to Claim 1, wherein the cuttinginsert (14) is mirror symmetric about a major plane P1, passing throughthe upper and lower surfaces (16, 18) and the |ongitudina| axis (26).
    [3] 3. The cutting tool according to Claim 1, wherein the primaryclamping surface (32a, 34a) of each V-shaped clamping surface (32, 34)of the cutting insert (14) is formed at a relatively large angle (36) withrespect to a minor plane P2 perpendicular to the primary plane P1, andwherein the secondary clamping surface (32b, 34b) of each V-shapedclamping surface (32, 34) of the cutting insert (14) is formed at a relativelysmall angle (38) with respect to the minor plane P2.
    [4] 4. The cutting tool according to Claim 3, wherein the relatively large angle (36) is in a range between 110 degrees to 150 degrees.
    [5] 5. The cutting tool according to Claim 3, wherein the relativelysmall angle (38) is in a range between 0 degrees to 30 degrees.
    [6] 6. The cutting tool according to Claim 1, wherein the primaryclamping surface (62a, 64a) of each inverted V-shaped clamping surface(64) of the toolholder (12) is formed at a relatively large angle (66) withrespect to a minor plane P2 perpendicular to the primary plane P1, andwherein the secondary clamping surface (62b, 64b) of each inverted V-shaped clamping surface (64) of the toolholder (12) is formed at arelatively small angle (68) with respect to the minor plane P2.
    [7] 7. The cutting tool according to Claim 6, wherein the relativelylarge angle (66) is in a range between 110 degrees to 150 degrees. _13-
    [8] 8. The cutting tool according to Claim 6, wherein the relatively small angle (68) is in a range between 0 degrees to 30 degrees.
    [9] 9. The cutting tool according to Claim 1, wherein the uppersurface (16) of the cutting insert (14) includes two V-shaped insert clamping surfaces (40, 42).
    [10] 10. The cutting tool according to Claim 9, wherein the V-shapedclamping surfaces (40a, 42a) form an internal wedge angle (44) with respect to each other.
    [11] 11. The cutting tool according to Claim 10, wherein the internal wedge angle (44) is in a range between 40 degrees to 120 degrees.
    [12] 12. The cutting tool according to Claim 1, wherein the upperclamping surface (54) of the toolholder (12) includes two inverted V- shaped insert clamping surfaces (70, 72).
    [13] 13. The cutting tool according to Claim 12, wherein each invertedV-shaped clamping surface (70, 72) is formed by a pair of clamping surfaces (70a, 70b) and a vertex (70c) therebetween.
    [14] 14. The cutting tool according to Claim 13, wherein the clampingsurfaces (70a, 72a) form an internal wedge angle (74) with respect to each other.
    [15] 15. The cutting tool according to Claim 14, wherein the internal wedge angle (74) is in a range between 40 degrees to 120 degrees. _14-
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3823907A1|1988-07-14|1990-01-18|Feldmuehle Ag|CLAMP HOLDER FOR CUTTING INSERTS|
    IL91575A|1989-09-08|1992-07-15|Iscar Ltd|Cutting insert having a chip former|
    SE509339C2|1994-12-08|1999-01-11|Seco Tools Ab|Tools and cutters for chip separating machining|
    SE511934C2|1997-09-24|1999-12-20|Sandvik Ab|Chip separating tool|
    SE526539C2|2002-05-28|2005-10-04|Sandvik Intellectual Property|Chip separation machining tool where the cutting position has flexible portions.|
    SE526110C2|2002-06-25|2005-07-05|Seco Tools Ab|Cutting tool for chip removal machining with negative base form where the release surface connects to the chip breaker|
    JP2004209615A|2003-01-08|2004-07-29|Mitsubishi Materials Corp|Grooving tool and throwaway tip|
    SE526586C2|2003-11-25|2005-10-11|Sandvik Intellectual Property|Chip separating machining tool including a male / female connection between cutting member and holder part|
    SE529330C2|2005-11-21|2007-07-10|Sandvik Intellectual Property|Tools and cutting body for chip separating machining with elastic connection between cutting body and holder|
    SE532629C2|2007-12-04|2010-03-09|Seco Tools Ab|Cuts for chip separating machining|
    DE102008005789B3|2008-01-23|2009-06-25|Präzisions-Drehteile Löcher GmbH|Cutting tool has base holder at which cutting plate holder is attached, where cutting plate holder has recess for receiving cutting plate|
    IL191520A|2008-05-18|2012-04-30|Iscar Ltd|Cutting tool and cutting insert therefor|
    CN102601395B|2012-03-21|2014-03-19|株洲钻石切削刀具股份有限公司|Blade for carrying out groove processing and cutting|
    CN102601403B|2012-03-21|2014-07-09|株洲钻石切削刀具股份有限公司|Tool holder for grooving cutting blade|DE102012004804C5|2012-03-09|2019-03-14|Kennametal Inc.|Puncture cutting plate and lancing cutting tool|
    USD912708S1|2017-11-30|2021-03-09|Illinois Tool Works Inc.|Cutting insert|
    USD880547S1|2017-11-30|2020-04-07|Illinois Tool Works Inc.|Cutting insert|
    CN111889776B|2020-08-04|2021-12-10|株洲华锐精密工具股份有限公司|High-speed milling cutter|
    法律状态:
    2016-11-08| NAV| Patent application has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    US13/742,673|US8926233B2|2013-01-16|2013-01-16|Toolholder and cutting insert therefor|
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