JP3822506B2 - Tool holder, cutting edge member and cutting tool - Google Patents
Tool holder, cutting edge member and cutting tool Download PDFInfo
- Publication number
- JP3822506B2 JP3822506B2 JP2002053551A JP2002053551A JP3822506B2 JP 3822506 B2 JP3822506 B2 JP 3822506B2 JP 2002053551 A JP2002053551 A JP 2002053551A JP 2002053551 A JP2002053551 A JP 2002053551A JP 3822506 B2 JP3822506 B2 JP 3822506B2
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- tool holder
- cutting
- tool
- steel
- blade member
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- 238000005520 cutting process Methods 0.000 title claims description 59
- 229910000831 Steel Inorganic materials 0.000 claims description 39
- 239000010959 steel Substances 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 20
- 239000002826 coolant Substances 0.000 claims description 7
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 4
- 238000003801 milling Methods 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 102220005308 rs33960931 Human genes 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
- B23B2270/12—Centering of two components relative to one another
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Milling Processes (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、超硬合金製シャンク部に鋼部が固着された工具保持具、その先端に着脱自在に装着される切刃部材及び工具保持具の先端に切刃部材が装着された切削工具に関する。
【０００２】
【従来の技術】
例えば、フライス加工においては、加工機の主軸に、先端に切刃部材（例えば、カッタ）を有する工具保持具を備えた切削工具（エンドミル）を取り付け、主軸を回転させることにより被削材に所定の加工が行われる。上記工具保持具を、例えばＳＣＭ材などの合金鋼で形成した場合は、低価格であっても、突き出し長が長くなると、剛性が不足するために狭い範囲の切削条件でしか加工を行えないという欠点があり、また工具保持具を超硬合金のみで形成すると、剛性は大であるが、価格高となる。その対策として特開平９−１５５６０５号には、シャンク部の首下に設けられたアーバの外周にその軸方向に沿って超硬筋金を添設することが提案されている。しかしこの構造では、アーバの剛性がアップするので、加工中のビビリや撓みを抑制できるが、アーバに溝加工を施すこと及びそこに超硬筋金を埋め込むことが必要となるため、材料費は低減されても、製作工数は増大する。また特開平８−１４２５号には、シャンク部を超硬合金で形成すると共に、シャンク部にろう付けされたチップホルダー部を鋼製とするフライス加工用工具が提案されている。この工具では、シャンク部が超硬合金を主体として構成されているため、高剛性でビビリが起きにくいという利点があり、またアーバの外周に超硬筋金を添設したものより、低価格で製作することができる。
【０００３】
【発明が解決しようとする課題】
しかるに上記のフライス加工用工具は、シャンク部は超硬合金で形成されているが、チップホルダー部を鋼製としているので、長期の使用ではチップホルダー部が損耗し、またチップホルダー部はシャンク部にろう付けされているので、シャンク部は正常であってもその工具を使用することができず、結果として工具寿命が短くなるという問題がある。従って本発明の第１の目的は、工具寿命を長くすることができかつ低価格で製作することができる工具保持具を提供することである。また、本発明の第２の目的は、前記工具保持具に着脱自在に装着される切刃部材を提供することである。また、本発明の第３の目的は、切削領域の広い切削工具を提供することである。
【０００４】
【課題を解決するための手段】
上記第１、第２の目的を達成するために、工具保持具の先端に切刃部材が装着された切削工具において、前記工具保持具は、超硬合金からなるシャンク部に鋼部が固着され、前記鋼部の前記切刃部材が着脱自在に装着される側の端面にインロー部を、その奥に軸方向に固定する受容部を形成し、前記切刃部材の一端側にインサートを保持する基体部を設け、その他端側に前記インロー部に装入される第１突出部と、前記受容部に固定される第２突出部とを有する接続部とが形成され、前記鋼部は少なくとも表面の硬さがＨＲＣ３５以上を有するＳＫＤ６１相当の合金鋼で形成され、且つ、前記切刃部材は、前記工具保持具の鋼部より低硬度の材料で形成されたことを特徴とする工具保持具、切刃部材である。この構成によれば、切刃部材が装着される側の端面にインロー部が形成され、その奥に軸方向に固定する受容部が形成されているので、鋼部の拘束面の損耗を低減し、寿命を長くすることができる。本発明の工具保持具においては、寿命の点から、前記鋼部は、表面の硬さがＨＲＣ４０以上を有するクロム・モリブデン鋼で形成されていることが好ましい。本発明の工具保持具においては、前記シャンク部は、ＪＩＳＶ４０相当材で形成することが好ましい。本発明の工具保持具においては、前記シャンク部は、前記鋼部に差し込まれる円錐状に形成された先端部を有することが好ましい。本発明の工具保持具においては、前記受容部は例えば雌ねじで形成し、そこに切刃部材を螺合することができる。本発明の工具保持具においては、前記シャンク部は、クーラント穴を有することが好ましい。本発明の工具保持具においては、前記シャンク部の外径（Ｄ）に対する全長（Ｌ）の比率（Ｌ／Ｄ）が５以上であることが好ましい。
【０００５】
上記第３の目的を達成するために、本発明の切削工具は、前記工具保持具の先端に、前記インロー部に装入される第１突出部とその先端の第２突出部とを有する接続部が形成された切刃部材が着脱自在に装着されることを特徴とする。
【０００６】
【発明の実施の形態】
以下本発明の詳細を添付図面により説明する。
図１は本発明の実施例に係わる工具保持具及びそこに装着される切刃部材を示す正面図で、工具保持具は一部を破断して示されている。
図１に符号１で示す切削工具は、加工機の主軸に装着される工具保持具２と、その先端に図示矢印方向からねじ込まれる切刃部材、例えばカッタ８を有する。工具保持具２は、超硬合金、例えばＮＣ６０材（ＪＩＳＶ４０相当材）で作成されたシャンク部３とその円錐状の先端部３ａに接合された鋼部４を含む。鋼部４の端面には、インロー部５が形成され、その奥側にカッタ８を軸方向に固定するための受容部（雌ねじ部）６が形成され、またシャンク部に接合される側には円錐状の溝４ａが設けられている。このシャンク部３には、その中心部にエアー、ミストあるいは切削液等の冷却媒体の通路となるクーラント穴７が穿孔されている。カッタ８は、基体部９の一端側にチップ１４が装着されるインサート座１３を有するとともに、基体部９の他端側にインロー部５に嵌装される第１突出部１１と雌ねじ部６に螺合される第２突出部（雄ねじ部）１２とを有する接続部１０が形成されている。本発明では、工具保持具２とカッタ８との結合手段としては、着脱自在な結合手段であれば、上記ねじ結合に限らず、焼嵌め、テーパ嵌合あるいはサイドロック等の他の手段を用い得る。エンドミルの場合、通常、上記工具保持具は、シャンク部の外径Ｄ（シャンク径）に対して全長Ｌが５倍以上になる細長い円筒体であり、図１では、加工時に被削材との干渉を防ぐためにシャンク部の途中（１／３Ｌ〜１／２Ｌ程度）で数ｍｍ程度縮径されているが、このような干渉が無い場合は全長に亘って等径に形成してもよい。シャンク径Ｄは、カッタ径と同等もしくはそれより多少小径に形成される。
【０００７】
上記鋼部４の端面にカッタ８が奥までねじ込まれて、カッタ８の基体部９の端面が鋼部４の端面５ａに当接すると、第１突出部１１の外周面もインロー部５の内周面５ｂに当接するため、鋼部４の端面５ａに作用する切削力が低減され、端面５ａの外縁部が殆ど損耗せず、その結果カッタ８の取付け精度を高いレベルに維持することができる。仮にインロー部５が無い場合は、鋼部４の端面５ａのみで切削力を受けるで、端面５ａの外縁部が損耗して、カッタ８の取付け精度が低下する。上記第１突出部１１は、円筒状に限らず例えば円錐台状等他の形状でもよい。なお、図示しないが、カッタ８の内部には、一端側が上記クータント穴７に連通しかつ他端側が各インサート座１３に通ずるクーラント穴が穿孔されている。
【０００８】
またシャンク部３と鋼部４との接合部においては、シャンク部３の先端部３ａが円錐状に形成され、一方鋼部４の内周面も円錐状に形成されているので、全周に沿って均一な接合強度が得られ、また接合面の面積を広くすることができ（例えばＶ字形の場合の２倍以上）、高い接合強度が得られるため、その剛性を大きくすることができる。また鋼部４の内周面が円錐状に形成されていることにより、接合面における重量バランスが良好であり、振動やビビリを伴わずに高速で回転することができる。なおシャンク部３の先端部は、正確な円錐状に限らず多面錐状であっても、全周に沿って略均一な接合強度が得られ、また接合面の面積は広くなるので、本発明に適用することができる。
【０００９】
上記鋼部４は例えばろう付けによりシャンク部３に固着されるが、その場合効率よくろう付け作業を行うためには、鋼部４はシャンク部３とともに高温に加熱することが必要となる。そこで鋼部４を高温に加熱しても、軟化しない材質とするために、例えば少なくとも表面の硬さがＨＲＣ３５以上を有する合金鋼で形成することが好ましい。このような合金鋼の内では、特に表面の硬さがＨＲＣ４０以上を有する、例えばＳＫＤ６１材（質量比で、Ｃ：０．３２〜０．４２％、Ｓｉ：０．８〜１．２％、Ｍｎ：０．５％以下、Ｐ：０．０３０％以下、Ｓ：０．０３０％以下、Ｃｒ：４．５０〜５．５０％、Ｍｏ：１．００〜１．５０％、Ｖ：０．８０〜１．２０％、残部Ｆｅ及び不可避の不純物）が好適で、この鋼種は主成分としてＣｒを含むので、耐食性が向上し、使用条件によっては黒染め処理あるいはめっき処理等の表面処理を省略することが可能である。また上記鋼部４は、カッタ８の基体部９及び接続部１０に当接し、切削力を受けるので、カッタ８の基体部９及び接続部１０を鋼部４よりも低硬度の材料（例えばＨＲＣ３５未満のＳＣＭ材）で形成しておくことにより、鋼部４の損耗を低減することができる。
【００１０】
【実施例】
図１において、超硬合金［日立ツール（株）製ＷＢ６０］で作成したシャンク部［シャンク径（Ｄ）３２ｍｍ、首下径２９ｍｍ、シャンク長さ（Ｌ）３００ｍｍ、Ｌ／Ｄ＝９．３］の先端にＨＲＣ５２のＳＫＤ６１材をろう付けし、その先端に、基体部及び接続部をＨＲＣ４０のＳＣＭ材で形成したインサート式ラジアスカッタ（インサート：直径１０ｍｍの丸駒、刃先径３２ｍｍ、３枚刃）をねじ込んで、全長が３４０ｍｍの切削工具を準備した。上記切削工具をフライス盤の主軸に装着し、被削材としてＳ５０Ｃを用いてフライス加工を行った。切削条件は、切削速度を２００ｍ／ｍｉｎ、主軸の回転数を１９８９ｒｐｍ、１刃の送りを０．３ｍｍ／刃、テーブル送りを１７９０ｍｍ／ｍｉｎとして、軸方向切り込み深さ（Ａｄ）及び径方向切り込み深さ（Ｒｄ）を変化させて、びびりが発生せずに切削が行える領域（切削領域）を求め、その結果を図２に実線で示す。比較のために、シャンク部を合金鋼（ＨＲＣ４０のＳＣＭ材）で形成した以外は上記と同様の切削工具を準備し、上記と同様の条件でフライス加工を行い、切削領域を求め、図２に破線で示す。図２から、本発明の切削工具によれば、従来の切削工具よりも切削領域を広くできることがわかる。また上記ＳＣＭ材の代わりに上記ＳＫＤ６１材で形成したインサート式ラジアスカッタを、先端にＨＲＣ５２のＳＫＤ６１材をろう付けした上記シャンク部にねじ込んで形成した切削工具を用いて、上記と同様の条件でフライス加工を行い、切削領域を求めた結果、図２の実線で示すと同様に広い切削領域を得ることができた。
【００１１】
【発明の効果】
以上に記述の如く、本発明の工具保持具によれば、超硬合金からなるシャンク部の先端に固着された鋼部の端面にインロー部が形成されその奥に軸方向に固定する受容部が形成されているので、鋼部の損耗が低減されて工具保持具の寿命が長くなる。また本発明の切刃部材は、工具保持具に着脱自在に装着されるので、切刃部材の一部が損傷しても、その補修（交換）だけで済み、工具寿命を長くすることができる。さらに本発明の切削工具によれば、シャンク部と鋼部との接合部が全周にわたって均一な強度を保ち剛性が高く、しかも重量バランスがよいので、切削領域を広げることができる。
【図面の簡単な説明】
【図１】 本発明の実施例に係わる工具保持具及び切刃部材を示す正面図である。
【図２】 本発明及び従来の切削工具の切削領域を示す図である。
【符号の説明】
１：切削工具
２：工具保持具
３：シャンク部
３ａ：頂部
４：鋼部
４ａ：接合面
５：インロー部
５ａ：端面
５ｂ：内周面
６：受容部
７：クーラント穴
８：カッタ
９：基体部
１０：接続部
１１：第１突出部
１２：第２突出部
１３：インサート座
１４：チップ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tool holder in which a steel portion is fixed to a cemented carbide shank, a cutting blade member that is detachably attached to the tip thereof, and a cutting tool in which a cutting blade member is attached to the tip of the tool holder. .
[0002]
[Prior art]
For example, in milling, a cutting tool (end mill) provided with a tool holder having a cutting edge member (for example, a cutter) at the tip is attached to the main shaft of a processing machine, and the main shaft is rotated so that a predetermined work material is obtained. Is processed. When the tool holder is made of alloy steel such as SCM material, for example, even if it is low in price, if the protruding length becomes long, the rigidity is insufficient, so that it can be processed only under a narrow cutting condition. There are drawbacks, and if the tool holder is made of cemented carbide only, the rigidity is high but the price is high. As a countermeasure, Japanese Patent Application Laid-Open No. 9-155605 proposes to attach super hard bars along the axial direction to the outer periphery of an arbor provided under the neck of the shank. However, in this structure, the rigidity of the arbor is increased, so chattering and bending during processing can be suppressed, but since it is necessary to grooving the arbor and embedding carbide bars there, the material cost is Even if it is reduced, the number of manufacturing steps increases. Japanese Patent Laid-Open No. 8-1425 proposes a milling tool in which the shank portion is formed of a cemented carbide and the tip holder portion brazed to the shank portion is made of steel. This tool has the advantage that the shank part is mainly composed of cemented carbide, so it has the advantage of being highly rigid and less prone to chatter, and at a lower price than the one with cemented carbide on the outer periphery of the arbor. Can be produced.
[0003]
[Problems to be solved by the invention]
However, in the above milling tool, the shank part is made of cemented carbide, but since the tip holder part is made of steel, the tip holder part is worn out over a long period of use, and the tip holder part is also a shank part. Therefore, the tool cannot be used even if the shank portion is normal, resulting in a problem that the tool life is shortened. Accordingly, a first object of the present invention is to provide a tool holder that can extend the tool life and can be manufactured at low cost. The second object of the present invention is to provide a cutting blade member that is detachably attached to the tool holder. The third object of the present invention is to provide a cutting tool having a wide cutting area.
[0004]
[Means for Solving the Problems]
In order to achieve the first and second objects, in the cutting tool in which a cutting blade member is attached to the tip of the tool holder, the tool holder has a steel portion fixed to a shank portion made of cemented carbide. An inlay portion is formed on the end surface of the steel portion on the side where the cutting blade member is detachably mounted, and a receiving portion for fixing in the axial direction is formed in the back thereof, and the insert is held on one end side of the cutting blade member. A base portion is provided, and a connecting portion having a first protruding portion inserted into the inlay portion on the other end side and a second protruding portion fixed to the receiving portion is formed, and the steel portion is at least a surface A tool holder characterized in that the cutting edge member is made of a material having a hardness lower than that of the steel part of the tool holder; It is a cutting blade member. According to this configuration, the inlay portion is formed on the end surface on the side where the cutting blade member is mounted, and the receiving portion that is fixed in the axial direction is formed in the back thereof, so that the wear on the restraining surface of the steel portion is reduced. , Can extend the life. In the tool holder of the present invention, it is preferable that the steel part is formed of chromium-molybdenum steel having a surface hardness of HRC 40 or more from the viewpoint of life. In the tool holder of this invention, it is preferable that the said shank part is formed with a JISV40 equivalent material. In the tool holder of this invention, it is preferable that the said shank part has a front-end | tip part formed in the cone shape inserted in the said steel part. In the tool holder of this invention, the said receiving part can be formed with an internal thread, for example, and a cutting blade member can be screwed together there. In the tool holder of this invention, it is preferable that the said shank part has a coolant hole. In the tool holder of this invention, it is preferable that the ratio (L / D) of the full length (L) with respect to the outer diameter (D) of the said shank part is 5 or more.
[0005]
In order to achieve the third object, the cutting tool of the present invention is a connection having a first protrusion inserted into the spigot portion and a second protrusion at the tip thereof at the tip of the tool holder. A cutting blade member formed with a portion is detachably mounted.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Details of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a front view showing a tool holder and a cutting blade member attached thereto according to an embodiment of the present invention, and the tool holder is shown with a part thereof broken.
A cutting tool denoted by reference numeral 1 in FIG. 1 has a tool holder 2 mounted on a main shaft of a processing machine, and a cutting blade member, for example, a cutter 8 that is screwed into a tip of the tool holder 2 from an arrow direction shown in the drawing. The tool holder 2 includes a shank portion 3 made of a cemented carbide, for example, NC60 material (JISV40 equivalent material) and a steel portion 4 joined to the conical tip portion 3a. An
[0007]
When the cutter 8 is screwed into the end surface of the steel part 4 and the end surface of the base part 9 of the cutter 8 comes into contact with the end surface 5 a of the steel part 4, the outer peripheral surface of the first projecting part 11 is also within the
[0008]
Moreover, in the junction part of the shank part 3 and the steel part 4, the front-end | tip part 3a of the shank part 3 is formed in conical shape, On the other hand, since the inner peripheral surface of the steel part 4 is also formed in conical shape, A uniform bonding strength can be obtained along the surface, and the area of the bonding surface can be widened (for example, twice or more that in the case of a V shape), and a high bonding strength can be obtained, so that the rigidity can be increased. Further, since the inner peripheral surface of the steel part 4 is formed in a conical shape, the weight balance on the joint surface is good, and the steel portion 4 can rotate at high speed without vibration and chatter. Even if the tip of the shank portion 3 is not limited to an exact conical shape but is a polyhedral conical shape, a substantially uniform joining strength can be obtained along the entire circumference, and the area of the joining surface is widened. Can be applied to.
[0009]
The steel part 4 is fixed to the shank part 3 by brazing, for example. In this case, the steel part 4 needs to be heated to a high temperature together with the shank part 3 in order to perform the brazing operation efficiently. Therefore, in order to make the material that does not soften even when the steel part 4 is heated to a high temperature, for example, it is preferable to form the steel part 4 from an alloy steel having a surface hardness of HRC35 or higher. Among such alloy steels, especially the surface hardness has HRC40 or more, for example, SKD61 material (by mass ratio, C: 0.32-0.42%, Si: 0.8-1.2%, Mn: 0.5% or less, P: 0.030% or less, S: 0.030% or less, Cr: 4.50 to 5.50%, Mo: 1.00 to 1.50%, V: 0.00. 80 to 1.20%, balance Fe and unavoidable impurities), and this steel type contains Cr as the main component, so corrosion resistance is improved and surface treatment such as black dyeing or plating is omitted depending on use conditions. Is possible. Further, since the steel part 4 contacts the base part 9 and the
[0010]
【Example】
In FIG. 1, a shank portion made of cemented carbide [WB60 manufactured by Hitachi Tool Co., Ltd.] [shank diameter (D) 32 mm, neck lower diameter 29 mm, shank length (L) 300 mm, L / D = 9.3] Insert type radius scatter with brace of SKD61 material of HRC52 at the tip of the tip and base part and connection part made of SCM material of HRC40 at the tip (insert: round piece with a diameter of 10 mm, blade tip diameter of 32 mm, 3 blades) And a cutting tool having a total length of 340 mm was prepared. The cutting tool was mounted on the spindle of a milling machine, and milling was performed using S50C as a work material. Cutting conditions are as follows: cutting speed is 200 m / min, spindle rotation speed is 1989 rpm, blade feed is 0.3 mm / blade, table feed is 1790 mm / min, axial cut depth (Ad) and radial cut depth By changing the thickness (Rd), an area where cutting can be performed without chatter (cutting area) is obtained, and the result is shown by a solid line in FIG. For comparison, a cutting tool similar to the above was prepared except that the shank portion was formed of alloy steel (HRC40 SCM material), milling was performed under the same conditions as above, and the cutting area was obtained. Shown in broken lines. From FIG. 2, it can be seen that according to the cutting tool of the present invention, the cutting area can be made wider than that of the conventional cutting tool. In addition, using a cutting tool formed by screwing an insert-type radius cutter made of the SKD61 material instead of the SCM material into the shank portion brazed with the SKD61 material of HRC52 at the tip, milling is performed under the same conditions as described above. As a result of processing and obtaining the cutting area, a wide cutting area was obtained as shown by the solid line in FIG.
[0011]
【The invention's effect】
As described above, according to the tool holder of the present invention, an inlay portion is formed on the end surface of the steel portion fixed to the tip of the shank portion made of cemented carbide, and a receiving portion that is axially fixed to the back thereof. Since it is formed, the wear of the steel part is reduced and the life of the tool holder is prolonged. Further, since the cutting blade member of the present invention is detachably attached to the tool holder, even if a part of the cutting blade member is damaged, only repair (replacement) is required, and the tool life can be extended. . Furthermore, according to the cutting tool of the present invention, since the joint portion between the shank portion and the steel portion maintains a uniform strength over the entire circumference and has high rigidity and good weight balance, the cutting area can be expanded.
[Brief description of the drawings]
FIG. 1 is a front view showing a tool holder and a cutting blade member according to an embodiment of the present invention.
FIG. 2 is a diagram showing a cutting region of the present invention and a conventional cutting tool.
[Explanation of symbols]
1: Cutting tool 2: Tool holder 3: Shank portion 3a: Top portion 4: Steel portion 4a: Joining surface 5: Inner portion 5a: End surface 5b: Inner peripheral surface 6: Receiving portion 7: Coolant hole 8: Cutter 9: Substrate Part 10: Connection part 11: 1st protrusion part 12: 2nd protrusion part 13: Insert seat 14: Tip
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002053551A JP3822506B2 (en) | 2002-02-28 | 2002-02-28 | Tool holder, cutting edge member and cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002053551A JP3822506B2 (en) | 2002-02-28 | 2002-02-28 | Tool holder, cutting edge member and cutting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003251540A JP2003251540A (en) | 2003-09-09 |
| JP3822506B2 true JP3822506B2 (en) | 2006-09-20 |
Family
ID=28664948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002053551A Expired - Lifetime JP3822506B2 (en) | 2002-02-28 | 2002-02-28 | Tool holder, cutting edge member and cutting tool |
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| Country | Link |
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| JP (1) | JP3822506B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106346029A (en) * | 2015-07-13 | 2017-01-25 | 张新添 | Thread structure for connecting cutters |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005028368A1 (en) * | 2005-06-20 | 2006-12-28 | MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG | Machining tool for valve guides and seats has second tool part divided into two sections, one of hard metal, other of more elastic material |
| JP4636557B2 (en) * | 2006-07-20 | 2011-02-23 | 日立ツール株式会社 | Replaceable blade cutting tool |
| JP5362451B2 (en) * | 2009-06-11 | 2013-12-11 | オーエスジー株式会社 | Machining head replaceable rotary tool, holder, and machining head |
| JP5633936B2 (en) * | 2011-07-19 | 2014-12-03 | オリイメック株式会社 | Tool holder and spindle device |
| KR101491709B1 (en) * | 2011-07-19 | 2015-02-09 | 오리이멕 가부시키가이샤 | Tool holder and spindle apparatus |
| JP5664506B2 (en) | 2011-09-09 | 2015-02-04 | 三菱マテリアル株式会社 | Replaceable head cutting tool |
| KR101559263B1 (en) | 2011-10-17 | 2015-10-08 | 미츠비시 마테리알 가부시키가이샤 | Holder for head replacement-type cutting tool, and head replacement-type cutting tool |
| TWI508805B (en) * | 2014-12-23 | 2015-11-21 | Hsin Tien Chang | Discarded milling cutter |
| CH710710A1 (en) * | 2015-02-11 | 2016-08-15 | Urma Ag | Machine friction tool with a shaft and a replaceable head mounted thereon, as well as a replaceable head and shaft for a machine friction tool. |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0618729Y2 (en) * | 1989-04-10 | 1994-05-18 | 三菱マテリアル株式会社 | Ball end mill |
| JP2520539Y2 (en) * | 1989-06-06 | 1996-12-18 | 三菱マテリアル株式会社 | Throwaway cutter |
| JPH08155723A (en) * | 1994-12-08 | 1996-06-18 | Ngk Spark Plug Co Ltd | Throwaway rotary cutting tool |
| JPH10128612A (en) * | 1996-10-28 | 1998-05-19 | Mitsubishi Materials Corp | Edge part replacing type end mill |
| JP4528373B2 (en) * | 1997-02-20 | 2010-08-18 | 住友電工ハードメタル株式会社 | Coated tool and manufacturing method thereof |
| JP2000084783A (en) * | 1998-09-16 | 2000-03-28 | Manyoo Tool Kk | Tool holder |
| JP2000288823A (en) * | 1999-04-02 | 2000-10-17 | Mitsubishi Materials Corp | Throwaway end mill |
| JP2001239403A (en) * | 2000-02-24 | 2001-09-04 | Kyocera Corp | Cutting tools |
| JP3633842B2 (en) * | 2000-02-29 | 2005-03-30 | 日立ツール株式会社 | End mill |
-
2002
- 2002-02-28 JP JP2002053551A patent/JP3822506B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106346029A (en) * | 2015-07-13 | 2017-01-25 | 张新添 | Thread structure for connecting cutters |
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|---|---|
| JP2003251540A (en) | 2003-09-09 |
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