WO2010059705A2 - Insert de coupe pour fraise à bout hémisphérique à deux côtés et outil pour celui-ci - Google Patents
Insert de coupe pour fraise à bout hémisphérique à deux côtés et outil pour celui-ci Download PDFInfo
- Publication number
- WO2010059705A2 WO2010059705A2 PCT/US2009/064962 US2009064962W WO2010059705A2 WO 2010059705 A2 WO2010059705 A2 WO 2010059705A2 US 2009064962 W US2009064962 W US 2009064962W WO 2010059705 A2 WO2010059705 A2 WO 2010059705A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insert
- substantially planar
- cutting insert
- receiving pocket
- curvilinear side
- Prior art date
Links
- 239000002826 coolant Substances 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 238000003754 machining Methods 0.000 description 4
- 238000003801 milling Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
- B23C5/1009—Ball nose end mills
- B23C5/1027—Ball nose end mills with one or more removable cutting inserts
- B23C5/1045—Ball nose end mills with one or more removable cutting inserts having a cutting insert, the cutting edge of which subtends substantially 90 degrees
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
- B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
- B23C5/2208—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts
- B23C5/2213—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts having a special shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/12—Side or flank surfaces
- B23C2200/128—Side or flank surfaces with one or more grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/20—Top or side views of the cutting edge
- B23C2200/203—Curved cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/16—Fixation of inserts or cutting bits in the tool
- B23C2210/168—Seats for cutting inserts, supports for replacable cutting bits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2250/00—Compensating adverse effects during milling
- B23C2250/12—Cooling and lubrication
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/19—Rotary cutting tool
- Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
- Y10T407/1908—Face or end mill
- Y10T407/1924—Specified tool shape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
- Y10T407/235—Cutters, for shaping including tool having plural alternatively usable cutting edges with integral chip breaker, guide or deflector
Definitions
- the invention relates in general to a cutting insert for a ball end mill, and in particular, to a double-sided cutting insert for a ball end mill having four cutting edges that can cut in any direction without the requirement of error proofing when the cutting insert is mounted on the ball end mill.
- Ball nose end mills are used in many metal working applications including mold making where the inherent strength and milling advantages of a fully radiused cutting edge for the copy milling of a mold cavity is best demonstrated. Its ball shape allows the end mill to attack the mold cavity from any angle or direction. The cutting edge when generated through the end of the ball mill becomes helical with rotation. This promotes shearing of the metal to be cut in an efficient manner.
- a conventional ball nose end mill includes a generally cylindrical end mill body having a generally hemispherical forward end portion. Two insert-receiving seats or recesses are formed in the forward end portion, diametrically opposite to each other. Two indexable cutting inserts are mounted in the two seats and secured thereto by means of clamp screws.
- Ball nose end mills have proven to be highly versatile machine tools that are capable of performing plunge-type cutting much like a drill, or face-type milling like a conventional milling head, or even ramp-type machine operations that combine the motions of both plunge and face-type cutting.
- the cutting inserts used in conventional ball end mills have at most two cutting edges on one side of the cutting insert with the other side used strictly as a seating surface. As a result, one-half of the cutting insert is not being used, which increases the overall operating cost of such a conventional end mill.
- a cutting insert that is capable of being mounted within an insert-receiving pocket of a ball end mill.
- the cutting insert includes a first substantially planar surface, a second substantially planar surface, a first curvilinear side surface, a second curvilinear side surface, a first pair of cutting edges formed at an intersection between the first substantially planar surface and the first and second curvilinear side surfaces, and a second pair of cutting edges formed at an intersection between the second substantially planar surface and the first and second curvilinear side surfaces.
- the first substantially planar surface is substantially parallel to the second substantially planar surface.
- a cutting insert that is capable of being mounted within the insert-receiving pocket.
- the cutting insert includes a first substantially planar surface, a second substantially planar surface, a first curvilinear side surface, a second curvilinear side surface, a corner radius between the first and second curvilinear side surfaces.
- the cutting insert is mirror symmetric about all three central x-, y- and z-axis to form a first pair of cutting edges at an intersection between the first substantially planar surface and the first and second curvilinear side surfaces, and a second pair of cutting edges at an intersection between the second substantially planar surface and the first and second curvilinear side surfaces.
- a ball end mill comprising a body having a generally hemispherical forward end portion and a rearward end portion.
- the generally hemispherical forward end portion includes an insert-receiving pocket and a chip pocket.
- the insert-receiving pocket includes a bottom support surface, an axial support surface, a radial support surface, and a free surface between the axial support surface and the radial support surface.
- a cutting insert is capable of being mounted within the insert-receiving pocket.
- the cutting insert includes a first substantially planar surface, a second substantially planar surface, a first curvilinear side surface, a second curvilinear side surface, a corner radius between the first and second curvilinear side surfaces, a first pair of cutting edges formed at an intersection between the first substantially planar surface and the first and second curvilinear side surfaces, and a second pair of cutting edges formed at an intersection between the second substantially planar surface and the first and second curvilinear side surfaces.
- FIGURE 1 is an exploded perspective view of a ball end mill and cutting inserts according to an embodiment of the invention
- FIGURE 2 is a perspective view of the ball nose end mill of FIG. 1;
- FIGURE 3 is a front view of a body of the ball nose end mill of FIG. 1 ;
- FIGURE 4 is a side view of the body of the ball nose end mill of FIG. 1 ;
- FIGURE 5 is a perspective view of a cutting insert with four cutting edges according to an embodiment of the invention;
- FIGURE 6 is a plan view of the cutting insert of FIG. 5 showing the first substantially planar surface
- FIGURE 7 is a side view of the cutting insert of FIG. 5; and [00016] FIGURE 8 is another plan view of the cutting insert of FIG. 5 showing the second substantially planar surface.
- the ball end mill 10 includes a generally cylindrical body 12 having a generally hemispherical forward end portion 14 and a rearward end portion 16 that is adapted to be fixedly secured to a machine spindle (not shown) so that the body 12 can be rotated about an axis 18 therethrough.
- the generally hemispherical forward end portion 14 may be intersectioned by two recesses, each one comprising an insert-receiving pocket 20a, 20b and a chip pocket 22a, 22b.
- the insert-receiving pockets 20a, 20b and the chip pockets 22a, 22b are substantially identical in construction.
- the insert-receiving pocket 20a includes a bottom support surface 24, an axial side support surface 26 and a radial side support surface 28.
- a corner relief 30 is formed between the bottom support surface 24 and the axial and radial support surfaces 26, 28.
- a free surface 32 is provided between the axial and radial support surfaces 26, 28.
- the invention is not limited by the number of insert-receiving pockets 20a, and that the invention can be practiced with any desirable number of insert-receiving pockets 20a.
- the invention can be practiced with a ball end mill having only one insert-receiving pocket 20a, or a ball end mill having more than two insert-receiving pockets 20a.
- one or both of the side support surfaces 26, 28 includes a contact area 27, 29, respectively, that contacts a cutting insert 40 when the cutting insert 40 is mounted within the insert-receiving pocket 20a to provide three-point contact (the two contact areas 27, 29 and the bottom support surface 24) between the cutting insert 40 and the insert-receiving pocket 20a.
- a pair of contact areas 43, 45 may be located on each side surface 46, 48, respectively of the cutting insert 40 (a total of four contact areas) that correspond in shape to the contact areas 27, 29 formed on the axial and radial support surface 26, 28 of the insert- receiving pocket 20a.
- the contact areas 27, 29 comprise pads or lands, while the contact areas 43, 45 comprise recesses or protrusions having a corresponding shape, such as a rectangle, and the like.
- One purpose of the contact areas 27, 29 and 43, 45 is to provide seat surfaces between the axial and radial support surface 26, 28 and the cutting insert 40 when the cutting inserts 40 is mounted in the insert-receiving pocket 20a.
- Another purpose of the contact areas 27, 29 and 43, 45 is to provide an anti-rotation feature that prevents unwanted movement of the cutting insert 40 when mounted in the insert-receiving pocket 20a.
- a contact area may be a protrusion extending from the bottom support surface 24 of the insert-receiving pocket 20a, and a contact area (not shown) having a corresponding shape formed on the substantially planar surfaces 42, 44 of the cutting insert 40.
- the contact areas may be polygonal in cross-sectional shape, such as a triangle, square, rectangle, diamond, and the like. These contact areas on the bottom support surface 24 of the insert-receiving pocket 20a.
- Congruent recesses may be located on the substantially planar surfaces 42, 44 of the cutting insert 40. These alternate contact areas may replace, or be in addition to, the contact areas 27, 29 and 43, 45 discussed above.
- a threaded hole 34 is provided in the center area of bottom support surface 24 for accommodating a threaded screw 36, which provides a means for clamping a cutting insert, shown generally at 40, into the insert-receiving pocket 20a, 20b.
- the threaded hole 34 may be through holes or blind holes. In FIG. 1, the threaded hole 34 is shown as a through hole.
- One or more coolant passages 38 may be formed in the end mill body 12 to provide a flow of coolant to the area proximate the cutting insert 40.
- the cutting insert 40 includes a first substantially planar surface 42, a second, opposite substantially planar surface 44. As shown in FIG. 8, the plane of the first surface 42 is substantially parallel to the plane formed by the second surface 44.
- the cutting insert 40 includes a first curvilinear side surface 46 and a second curvilinear side surface 48, and a corner radius 50, 52 between the first and second curvilinear side surfaces 46, 48. As shown in FIGS. 6 and 7, the first and second side surfaces 46, 48 are substantially elliptical in shape. As shown in FIG. 8, the plane formed by the corner radius 50 is substantially parallel to the plane formed by the corner radius 52.
- the first and second side surfaces 46, 48 are formed at an angle of approximately ninety (90) degrees with respect to the first and second surfaces 42, 44.
- a first pair of cutting edges 54, 56 is formed at the intersection between the first surface 42 and the first and second side surfaces 46, 48, and a second pair of cutting edges 58, 60 is formed at the intersection between the second surface 44 and the first and second side surfaces 46, 48.
- a countersunk bore 62 extends from the first surface 42 to the second surface 44 that enables the cutting insert 40 to be mounted in the insert-receiving pocket 20a such that all four cutting edges 54, 56, 58 and 60 can be used during machining operations.
- the cutting insert 40 is mirror symmetric about all three central axes; the x-, y- and z-axis.
- the x- and y-axes are substantially parallel to the first and second surfaces 42, 44, which the z-axis is substantially perpendicular to the first and second surface 42, 44.
- the cutting insert 40 can be mounted in the insert-receiving pocket 20a such that the first surface 42 becomes the top surface and the second surface 44 becomes the bottom surface and engages the bottom support surface 24 and the first and second side surfaces 46, 48 engage the contact areas 27, 29 of the insert-receiving pocket 20a.
- the cutting edges 54, 56 can be used in machining operations by rotating the cutting insert 40 about the z-axis 180°.
- the cutting insert 40 can be mounted in the insert-receiving pocket 20a such that the second surface 44 becomes the top surface and the first surface 42 becomes the bottom surface and engages the bottom support surface 24 and the first and second side surfaces 46, 48 engage the contact areas 27, 29 of the insert-receiving pocket 20a.
- the cutting edges 58, 60 can be used in machining operations by rotating the cutting insert 40 about the z-axis 180°.
- the cutting insert 40 of the invention provides four (4) cutting edges that can be used in machining operations, as compared to only two or less cutting edges that are provided in conventional cutting inserts for ball end mills. [00026] As described above, the ball end mill with two identical cutting inserts, wherein each cutting insert has four cutting edges that can cut in any direction without the requirement of error proofing when the cutting insert is mounted on the ball end mill.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2011124897/02A RU2011124897A (ru) | 2008-11-19 | 2009-11-18 | Двусторонняя режущая пластина для концевой сферической фрезы и инструмент для нее |
EP09828155A EP2349619A4 (fr) | 2008-11-19 | 2009-11-18 | Insert de coupe pour fraise à bout hémisphérique à deux côtés et outil pour celui-ci |
CA2736155A CA2736155A1 (fr) | 2008-11-19 | 2009-11-18 | Insert de coupe pour fraise a bout hemispherique a deux cotes et outil pour celui-ci |
JP2011536617A JP2012509196A (ja) | 2008-11-19 | 2009-11-18 | 両面ボールエンドミル切削インサートおよび当該インサート用ツール |
CN2009801458279A CN102216011A (zh) | 2008-11-19 | 2009-11-18 | 双侧面的球头端铣刀切削镶片及用于此的工具 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/273,774 US9623493B2 (en) | 2008-11-19 | 2008-11-19 | Double-sided ball end mill cutting insert and tool therefor |
US12/273,774 | 2008-11-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010059705A2 true WO2010059705A2 (fr) | 2010-05-27 |
WO2010059705A3 WO2010059705A3 (fr) | 2010-09-16 |
Family
ID=42172179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2009/064962 WO2010059705A2 (fr) | 2008-11-19 | 2009-11-18 | Insert de coupe pour fraise à bout hémisphérique à deux côtés et outil pour celui-ci |
Country Status (8)
Country | Link |
---|---|
US (1) | US9623493B2 (fr) |
EP (1) | EP2349619A4 (fr) |
JP (1) | JP2012509196A (fr) |
KR (1) | KR20110086708A (fr) |
CN (1) | CN102216011A (fr) |
CA (1) | CA2736155A1 (fr) |
RU (1) | RU2011124897A (fr) |
WO (1) | WO2010059705A2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012509200A (ja) * | 2008-11-27 | 2012-04-19 | デグテック エルティーディー | 両面型切削インサート及びこれを備える切削工具 |
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US9623493B2 (en) | 2008-11-19 | 2017-04-18 | Kennametal Inc. | Double-sided ball end mill cutting insert and tool therefor |
SE533249C2 (sv) * | 2009-03-06 | 2010-07-27 | Seco Tools Ab | Skär med urtagen skärstödjande yta och skärverktyg |
KR101103216B1 (ko) * | 2009-05-19 | 2012-01-05 | 대구텍 유한회사 | 원형 형상을 갖는 양면형 절삭 삽입체 및 이를 사용하는 절삭 공구 |
WO2010140718A1 (fr) * | 2009-06-02 | 2010-12-09 | Taegutec Ltd. | Plaquette de coupe et ensemble outil la comportant |
IL208253A (en) | 2010-09-19 | 2015-01-29 | Iscar Ltd | Milling tools and cutting tool for it |
DE102010063611A1 (de) * | 2010-12-20 | 2012-06-21 | Walter Ag | Schneideinsatz mit strukturierten Freiflächen |
SE535441C2 (sv) * | 2010-12-28 | 2012-08-07 | Sandvik Intellectual Property | Upprymningsverktyg samt huvud och skär härför |
JP5790765B2 (ja) * | 2011-07-29 | 2015-10-07 | 株式会社タンガロイ | 切削インサートおよび回転切削工具 |
US8647026B2 (en) * | 2011-11-23 | 2014-02-11 | Kennametal Inc. | Cutting tool with pocket feature for reducing stress |
CN104364040B (zh) * | 2012-06-21 | 2016-08-31 | 株式会社钨钛合金 | 切削刀片、能够装接该切削刀片的工具主体及具备该切削刀片和工具主体的刀头更换式球头立铣刀 |
CN102962505B (zh) * | 2012-11-12 | 2015-09-23 | 大连经济技术开发区伊达工具有限公司 | 一种错齿pcd球头铣刀 |
WO2014181811A1 (fr) * | 2013-05-10 | 2014-11-13 | 株式会社タンガロイ | Pièce d'insertion tranchante, corps d'outil sur lequel peut être montée ladite pièce d'insertion tranchante, et outil amovible à bord tranchant et fraise à tête hémisphérique munie de celui-ci |
US9475131B2 (en) * | 2013-06-13 | 2016-10-25 | Kennametal Inc. | Milling cutter with stress reliefs |
US9475136B2 (en) * | 2013-07-30 | 2016-10-25 | Kennametal Inc. | High-speed milling cutter and cutting insert therefor |
US9700947B2 (en) | 2014-06-27 | 2017-07-11 | Kennametal Inc. | Ballnose cutting tool and ballnose cutting insert |
CN104400103A (zh) * | 2014-11-06 | 2015-03-11 | 西安海格尔数控技术装备有限公司 | 一种模具型面高速加工切削装置 |
DE102016102651A1 (de) * | 2015-02-24 | 2016-08-25 | Vandurit GmbH Hartmetall und Diamantwerkzeuge | Vorrichtung und Verfahren zur spanenden Bearbeitung eines rotierenden Werkstücks |
EP3187293A1 (fr) * | 2015-12-30 | 2017-07-05 | Bomar S.A. w upadlosci ukladowej | Appareil modulaire de coupe de tiges filetées |
DE102016104002A1 (de) * | 2016-03-04 | 2017-09-07 | Kennametal Inc. | Schneideinsatz für einen Fräser sowie Fräser |
US10556278B2 (en) | 2016-08-16 | 2020-02-11 | Kennametal Inc. | Tool body for a shell end mill and cutting tool |
EP3354389A1 (fr) * | 2017-01-30 | 2018-08-01 | Sandvik Intellectual Property AB | Procédé d'usinage de chemins de roulement à billes des joints homocinétiques |
EP3539696B1 (fr) * | 2018-03-13 | 2023-10-11 | AB Sandvik Coromant | Outil pour le tournage de métal comprenant un canal de refroidissement |
CN111922400A (zh) * | 2020-08-13 | 2020-11-13 | 哈尔滨汽轮机厂有限责任公司 | 一种船用汽轮机叶片采用柳叶刀加工汽道圆角及锥面方法 |
JP7012949B1 (ja) | 2021-07-15 | 2022-01-31 | 株式会社タンガロイ | 切削インサートおよび刃先交換式回転切削工具とそのボデー |
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-
2008
- 2008-11-19 US US12/273,774 patent/US9623493B2/en active Active
-
2009
- 2009-11-18 WO PCT/US2009/064962 patent/WO2010059705A2/fr active Application Filing
- 2009-11-18 JP JP2011536617A patent/JP2012509196A/ja active Pending
- 2009-11-18 CN CN2009801458279A patent/CN102216011A/zh active Pending
- 2009-11-18 CA CA2736155A patent/CA2736155A1/fr not_active Abandoned
- 2009-11-18 RU RU2011124897/02A patent/RU2011124897A/ru unknown
- 2009-11-18 KR KR1020117011235A patent/KR20110086708A/ko not_active Application Discontinuation
- 2009-11-18 EP EP09828155A patent/EP2349619A4/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
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See references of EP2349619A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012509200A (ja) * | 2008-11-27 | 2012-04-19 | デグテック エルティーディー | 両面型切削インサート及びこれを備える切削工具 |
Also Published As
Publication number | Publication date |
---|---|
US20100124465A1 (en) | 2010-05-20 |
WO2010059705A3 (fr) | 2010-09-16 |
RU2011124897A (ru) | 2012-12-27 |
CA2736155A1 (fr) | 2010-05-27 |
KR20110086708A (ko) | 2011-07-29 |
EP2349619A2 (fr) | 2011-08-03 |
EP2349619A4 (fr) | 2012-05-09 |
JP2012509196A (ja) | 2012-04-19 |
US9623493B2 (en) | 2017-04-18 |
CN102216011A (zh) | 2011-10-12 |
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