WO2011108108A1 - 切削工具 - Google Patents
切削工具 Download PDFInfo
- Publication number
- WO2011108108A1 WO2011108108A1 PCT/JP2010/053578 JP2010053578W WO2011108108A1 WO 2011108108 A1 WO2011108108 A1 WO 2011108108A1 JP 2010053578 W JP2010053578 W JP 2010053578W WO 2011108108 A1 WO2011108108 A1 WO 2011108108A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cutting
- main body
- cutting tool
- cutting head
- cemented carbide
- Prior art date
Links
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/11—Retention by threaded connection
- B23B31/1107—Retention by threaded connection for conical parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/11—Retention by threaded connection
- B23B31/1107—Retention by threaded connection for conical parts
- B23B31/1122—Retention by threaded connection for conical parts using cylindrical threads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/02—Connections between the shanks and detachable cutting heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/03—Cutting heads comprised of different material than the shank irrespective of whether the head is detachable from the shank
-
- 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
- Y10T407/1932—Rotary cutting tool including holder [i.e., head] having seat for inserted tool with means to fasten tool seat to holder
Definitions
- the present invention relates to a cutting tool in which a main body and a cutting head are configured to be detachable, and more particularly to a cutting tool that can suppress the amount of waste of the main body and the cutting head and can suppress vibration during cutting.
- a cutting tool that is rotationally driven by a machining center or the like and that cuts a workpiece is made of a cemented carbide.
- a cutting tool made of a cemented carbide has a higher rigidity and less bending than a cutting tool made of high-speed tool steel, and is therefore excellent in cutting accuracy in cutting.
- cemented carbide has a low toughness and is likely to cause chipping of the cutting edge compared to high-speed tool steel. For this reason, solid type (shank-integrated) cutting tools made of cemented carbide require the entire cutting tool to be replaced whenever the cutting edge is lost, resulting in a large amount of cutting tool waste and waste. large.
- a connected cutting tool in which a cutting head made of cemented carbide is detachable from a main body made of cemented carbide is known.
- this connected cutting tool when the cutting edge is lost, only the cutting head can be replaced and the main body can be reused, so that the amount of waste can be reduced compared to a solid type cutting tool.
- the screw hole 11 female thread portion
- the screw hole 11 is made of tungsten steel (super hard alloy)
- a coupling type cutting tool in which a rod 10 and a tool bit 20 are connected to each other by screwing a screw rod 21 (male thread portion) protruding from the bottom end of a tool bit 20 (cutting head).
- both the main body and the cutting head are made of cemented carbide, so that the thread of the external thread or female thread that connects the main body and the cutting head. Is easily damaged by vibration. If the thread of the external thread or female thread is missing, it is necessary to replace the main body or cutting head that has the missing thread, so there is a problem that the effect of reducing the amount of waste is insufficient. there were. Further, the coupled cutting tool has a problem that the rigidity of the entire cutting tool is lower than that of the solid type, and therefore the vibration of the cutting head is likely to occur during the cutting process.
- the present invention has been made to solve the above-described problems.
- the main body and the cutting head are configured to be detachable, the amount of waste of the main body and the cutting head can be suppressed, and at the time of cutting processing. It aims at providing the cutting tool which can suppress the vibration in.
- a helicate having a rigidity lower than that of the cemented carbide is attached to the female thread portion formed at the other end portion of the main body portion or the cutting head, and the main body portion is attached to the helicate. Or the main-body part and the cutting head are fixed by screwing the external thread part formed in either one edge part of a cutting head.
- a helicate with lower rigidity than that of the cemented carbide is interposed between the male and female screw parts made of cemented carbide, so that the male and female screw parts are in contact with each other. It is possible to prevent the loss of the thread of the external thread part and the internal thread part. As a result, there is an effect that the replacement frequency of the main body portion and the cutting head due to the thread deficit can be reduced, and the waste amount of the main body portion and the cutting head can be suppressed.
- the vibration of the cutting head with respect to the main body can be buffered by the helicate by interposing a helicate having lower rigidity than the cemented carbide between the male screw portion and the female screw portion. As a result, there is an effect that vibration during cutting can be suppressed.
- helicates are made of a softer material than aluminum die-casting and resin, so they are used for the purpose of repairing or preventing female thread wear due to repeated use. It is a member.
- Claim 1 mounts
- the helicate is made of steel having a predetermined rigidity
- the male screw portion is firmly tightened against the helicate. Can be fixed. Therefore, there is an effect that vibration of the cutting head during cutting can be further suppressed.
- (A) is a side view of the main-body part which comprises the cutting tool in one embodiment of this invention
- (b) is a side view of a helicate
- (c) is a side view of a cutting head.
- It is a side view of a cutting tool. It is a graph which shows the test result of a cutting test.
- FIG. Fig.1 (a) is a side view of the main-body part 10 which comprises the cutting tool 100 in one embodiment of this invention
- FIG.1 (b) is a side part of the helicate 20
- FIG.1 (c) is a side view of the cutting head 30.
- FIG. 1 (a) the internal thread portion 11 of the main body 10 is shown in cross-section
- FIG. 1 (b) the helicate is schematically illustrated in order to simplify the drawing and facilitate understanding.
- a part of the helisert 20 (upper side in FIG. 1B) is shown in cross-sectional view.
- the main body 10 is made of a cemented carbide obtained by pressure-sintering tungsten carbide (WC) or the like.
- the main body 10 is formed in a columnar shape with the axis O as the central axis, and a female screw is threaded on the inner periphery at one end (left side in FIG. 1A).
- the part 11 is recessed.
- This female thread is screwed by using a hand tap dedicated to Helisart.
- the diameter of the valley of the female thread 12 is 6.04 mm, and the female thread 12 is 12 mm.
- the maximum effective diameter is set to 5.596 mm, and the minimum effective diameter is set to 5.520 mm.
- the helisert 20 is a coil-shaped member composed of a stainless steel wire having a diamond-shaped cross section. Further, the helisert 20 is configured to be attachable to the female screw portion 11, and in the present embodiment, the maximum of the free outer diameter (the outer diameter before inserting the helisert 20 into the female screw portion 11) is 6.62 mm. The minimum free outer diameter is 6.36 mm, the maximum inner diameter is 4.294 mm, the minimum inner diameter is 4.134 mm, and the number of free turns is 7.125.
- the cutting head 30 is made of a cemented carbide obtained by pressure-sintering tungsten carbide or the like.
- the cutting head 30 includes a blade portion 31 for cutting a workpiece, and a male screw portion 32 protruding from one end portion (right side in FIG. 1 (c)) of the blade portion 31.
- a male screw is engraved on the outer periphery of the male screw portion 32.
- the male screw is formed so as to be able to be screwed to the helisert 20, and in this embodiment, the nominal size of the male screw is set to M5 ⁇ 0.8 and the nominal length is set to 7.50 mm.
- FIG. 2 a method of connecting the cutting tool 100 (see FIG. 2) will be described with reference to FIGS. 1 (a) to 1 (c). Specifically, first, the helisert 20 is attached to the female thread portion 11 using a dedicated tool (not shown). Next, the external thread portion 32 formed on the cutting head 30 is inserted into the internal thread portion 11. At this time, the cutting head 30 is fixed to the main body portion 10 by screwing the male screw portion 32 with the helicate 20 attached to the female screw portion 11.
- FIG. 2 is a side view of the cutting tool 100.
- the female screw portion 11, the helicate 20 and the male screw portion 32 are shown in cross-sectional view.
- the cutting tool 100 is a connected end mill for cutting a workpiece by a rotational force transmitted from a processing machine (not shown) such as a machining center.
- the main body 10 is attached to the processing machine via a holder (not shown), and the rotational force of the processing machine is transmitted to the main body 10 via the holder. Further, the rotational force is transmitted to the cutting head 30 connected to the main body 10, so that the cutting process is performed by the blade 31 formed on the cutting head 30.
- the helisert 20 made of steel having rigidity smaller than that of the cemented carbide is interposed between the external thread part 32 and the internal thread part 11.
- the helisert 20 made of steel having rigidity smaller than that of the cemented carbide is interposed between the external thread part 32 and the internal thread part 11.
- the vibration of the cutting head 30 relative to the main body 10 can be buffered by interposing the helicate 20 between the male screw portion 32 and the female screw portion 11. Further, since the helicate 20 is made of steel having a certain level of rigidity, the external thread portion 32 can be firmly tightened and fixed to the helicate 20. Therefore, the vibration of the cutting head 30 during cutting can be further suppressed. Thereby, since the defect
- the present invention is characterized in that the helicate 20 is mounted on the main body 10 made of a cemented carbide having higher rigidity than the helicate 20 made of steel. That is, the present invention can achieve the above-described effect by interposing the helicate 20 having lower rigidity than the external thread part 32 and the internal thread part 11 between the external thread part 32 and the internal thread part 11. is there.
- FIG. 2A and 2B are graphs showing the test results of the cutting test
- FIG. 2A shows the test results of the test using the cutting tool 100 according to the present invention.
- b) shows a test result of a test using a conventional cutting tool.
- This test is a test for measuring a cutting resistance acting on a cutting tool when side cutting is performed on the workpiece with the following detailed specifications using the cutting tool configured as described above.
- 2A and 2B are graphs in which the vertical axis represents cutting resistance and the horizontal axis represents machining time, and Fy is a horizontal component force (feed component force) acting in the feed direction of the cutting tool.
- Fx represents a vertical component force (main component force) acting in a direction perpendicular to the feed component force
- Fz represents an axial component force (back component force) acting in the axial direction of the cutting tool. That is, the main component force, the feed component force, and the back component force are component forces obtained by resolving the cutting resistance in the x-axis, y-axis, and z-axis directions orthogonal to each other.
- cutting test Detailed specifications of the cutting test are as follows: work material: SUS304, processing machine: vertical machining sensor, coolant: water-soluble coolant, cutting speed: 150 m / min, rotation speed: 4800 rotations / minute, feed speed: 2000 mm / min, feed: 0.07 mm / t, depth of cut: 15 mm, width of cut: 1 mm.
- the cutting tool 1 (radius end mill, ⁇ 10 ⁇ R1) in which the cutting head 20 is connected to the main body 10 via the helicate 30 and the cutting head described in the present embodiment are directly connected to the main body.
- the conventional product includes a cutting head 20 having the same configuration as the product of the present invention, and a main body having a threaded portion formed with a female screw to which the cutting head 20 can be screwed.
- main body 10 of the present invention and the main body of the conventional product are only configured such that the female thread portion can be screwed into the male screw portion (that is, M5 ⁇ 0.8, which is the same as the male screw). Differently, other configurations are the same.
- the average value of the back component force Fz was ⁇ 400 N for both the product of the present invention and the conventional product. Further, the average value of the main component force Fx was ⁇ 1150 N in the product of the present invention, and ⁇ 1000 N in the conventional product. Further, the average value of the feed force Fy was ⁇ 1650 N for both the present product and the conventional product.
- the average value of the feed component force Fy and the back component force Fz of the product of the present invention was the same as that of the conventional product, and there was no difference. Further, in the product of the present invention, the average value of the main component force Fx was 150 N smaller than the average value of the main component force Fx of the conventional product, and 15% smaller than the average value of the main component force Fx of the conventional product.
- the average value of the amplitude of the back component force Fz in the product of the present invention is 80 N smaller than the average value of the amplitude of the back component force Fz in the conventional product, and is approximately the average value of the amplitude of the back component force Fz in the conventional product. 43%.
- the average value of the amplitude of the main component force Fx in the product of the present invention is 150 N smaller than the average value of the amplitude of the main component force Fx in the conventional product, and is 40% of the average value of the amplitude of the main component force Fx in the conventional product. there were.
- the average value of the amplitude of the feed component force Fy in the product of the present invention is 80 N smaller than the average value of the amplitude of the feed component force Fy in the conventional product, which is approximately 62% of the average value of the amplitude of the feed component force Fy in the conventional product.
- the amplitude of the cutting force was small in the cutting force in any direction, and it was confirmed that the vibration during cutting was reduced. It is considered that this is because the vibration of the cutting head 30 can be buffered by the helicate 20 by mounting the helicate 20 on the female thread portion 11 in the product of the present invention.
- the present invention is not necessarily limited thereto, and may be applied to, for example, a cutting tool such as a drill or a tap.
- a holder made of cemented carbide and threaded with a female screw a chip made of cemented carbide and threaded with a female screw, and a helicate that is screwed into the holder and attached to the screw.
- a throw-away type tool in which the tip is fixed to the holder with a male screw made of cemented carbide.
- the helicate 20 was comprised with stainless steel, it is not necessarily restricted to this, From the material whose rigidity is lower than other steel or cemented carbide alloys, such as phosphor bronze. It may be configured.
- the present invention is not necessarily limited thereto.
- the thread portion may be recessed in the main body portion 10, and the female thread portion may be protruded in the cutting head 30.
- the said embodiment demonstrated the case where the external thread part 32 in which the external thread was threaded was protruded from the rear end of the cutting head 30, it is not necessarily restricted to this, You may form a thread part in the edge part of one side.
- the helisert is formed to have a size that can be screwed to the male screw portion, and the female screw portion of the main body portion is formed to have a size that allows the helisert to be mounted.
- the external thread threaded in an external thread part is It may be a left-hand thread. That is, it is only necessary that the external thread is threaded according to the cutting direction of the cutting head (in the direction in which the screw is tightened against the cutting resistance of the cutting head).
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Drilling Tools (AREA)
Abstract
Description
10 本体部
11 めねじ部
20 ヘリサート
30 切削ヘッド
32 おねじ部
O 軸心
Claims (2)
- 超硬合金から構成される本体部と、その本体部の先端に着脱可能に取り付けられ被加工物の切削加工を行うと共に超硬合金から構成される切削ヘッドとを備えた切削工具において、
前記本体部および前記切削ヘッドのいずれか一方の端部に形成されると共に外周におねじが螺刻されるおねじ部と、
前記本体部および前記切削ヘッドのいずれか他方の端部に形成されると共に内周にめねじが螺刻されるめねじ部と、
前記めねじ部に装着され超硬合金よりも剛性が小さいコイル状のヘリサートとを備え、
前記ヘリサートにおねじ部が螺合されることで、前記本体部に前記切削ヘッドが固定されることを特徴とする切削工具。 - 前記ヘリサートが鋼から構成されていることを特徴とする請求項1記載の切削工具。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2010/053578 WO2011108108A1 (ja) | 2010-03-04 | 2010-03-04 | 切削工具 |
CN2010800062883A CN102300660A (zh) | 2010-03-04 | 2010-03-04 | 切削工具 |
DE112010001763.8T DE112010001763B4 (de) | 2010-03-04 | 2010-03-04 | Schneidwerkzeug |
JP2010546992A JP4993528B2 (ja) | 2010-03-04 | 2010-03-04 | 切削工具 |
US12/998,888 US20130022415A1 (en) | 2010-03-04 | 2010-03-04 | Cutting tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2010/053578 WO2011108108A1 (ja) | 2010-03-04 | 2010-03-04 | 切削工具 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011108108A1 true WO2011108108A1 (ja) | 2011-09-09 |
Family
ID=44541792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/053578 WO2011108108A1 (ja) | 2010-03-04 | 2010-03-04 | 切削工具 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130022415A1 (ja) |
JP (1) | JP4993528B2 (ja) |
CN (1) | CN102300660A (ja) |
DE (1) | DE112010001763B4 (ja) |
WO (1) | WO2011108108A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014056888A1 (en) * | 2012-10-11 | 2014-04-17 | Seco Tools Ab | Cutting head and cutting tool having a replaceable cutting head |
EP2719490B1 (en) * | 2012-10-11 | 2016-04-27 | Seco Tools Ab | Cutting head and cutting tool having a replaceable cutting head |
WO2018083743A1 (ja) * | 2016-11-01 | 2018-05-11 | オーエスジー株式会社 | 先端交換式切削工具の本体部及び先端交換式切削工具 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9643264B2 (en) | 2013-07-25 | 2017-05-09 | Kennametal Inc. | Coupling mechanism for cutting tool |
CN104339432A (zh) * | 2013-07-25 | 2015-02-11 | 天工爱和特钢有限公司 | 一种改进的三平面钻头 |
US9643262B2 (en) | 2013-07-25 | 2017-05-09 | Kennametal Inc. | Coupling mechanism for cutting tool |
DE102013218884B4 (de) * | 2013-09-19 | 2015-05-21 | Kennametal Inc. | Spanendes Werkzeug |
US9889509B2 (en) | 2014-05-05 | 2018-02-13 | Kennametal Inc. | Cutter heads with improved coupling |
DE102016102908B4 (de) * | 2016-02-19 | 2020-09-17 | Mimatic Gmbh | Schnittstelle für ein Schneidwerkzeug |
CN109365857B (zh) * | 2018-12-14 | 2020-02-18 | 广信铝业股份有限公司 | 一种铝型材打孔加工装置 |
CN110681905B (zh) * | 2019-09-17 | 2020-12-22 | 中国船舶工业集团公司第七0八研究所 | 一种五轴数控加工设备的铣刀结构 |
CN114654548A (zh) * | 2022-02-18 | 2022-06-24 | 江西同正工具科技有限公司 | 一种劈柴钻头 |
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2010
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- 2010-03-04 DE DE112010001763.8T patent/DE112010001763B4/de not_active Expired - Fee Related
- 2010-03-04 US US12/998,888 patent/US20130022415A1/en not_active Abandoned
- 2010-03-04 CN CN2010800062883A patent/CN102300660A/zh active Pending
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014056888A1 (en) * | 2012-10-11 | 2014-04-17 | Seco Tools Ab | Cutting head and cutting tool having a replaceable cutting head |
EP2719490B1 (en) * | 2012-10-11 | 2016-04-27 | Seco Tools Ab | Cutting head and cutting tool having a replaceable cutting head |
WO2018083743A1 (ja) * | 2016-11-01 | 2018-05-11 | オーエスジー株式会社 | 先端交換式切削工具の本体部及び先端交換式切削工具 |
JP6371005B1 (ja) * | 2016-11-01 | 2018-08-08 | オーエスジー株式会社 | 先端交換式切削工具の本体部及び先端交換式切削工具 |
US10814408B2 (en) | 2016-11-01 | 2020-10-27 | Osg Corporation | Replaceable-tip cutting tool main body and replaceable-tip cutting tool |
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DE112010001763T5 (de) | 2012-07-26 |
JPWO2011108108A1 (ja) | 2013-06-20 |
US20130022415A1 (en) | 2013-01-24 |
JP4993528B2 (ja) | 2012-08-08 |
CN102300660A (zh) | 2011-12-28 |
DE112010001763B4 (de) | 2019-08-22 |
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