JPS5930634A - Machining tool holder for machine tool - Google Patents

Machining tool holder for machine tool

Info

Publication number
JPS5930634A
JPS5930634A JP57136224A JP13622482A JPS5930634A JP S5930634 A JPS5930634 A JP S5930634A JP 57136224 A JP57136224 A JP 57136224A JP 13622482 A JP13622482 A JP 13622482A JP S5930634 A JPS5930634 A JP S5930634A
Authority
JP
Japan
Prior art keywords
tool
tool holder
holder
bearings
accuracy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP57136224A
Other languages
Japanese (ja)
Other versions
JPS6315096B2 (en
Inventor
Toyohiko Hiyoshi
日吉　豊彦
Koichi Matsushita
松下　光一
Sekinori Yamamoto
山本　碩徳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP57136224A priority Critical patent/JPS5930634A/en
Publication of JPS5930634A publication Critical patent/JPS5930634A/en
Publication of JPS6315096B2 publication Critical patent/JPS6315096B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • B23Q1/38—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Turning (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

PURPOSE:To increase the accuracy of rotation of a tool and to prevent the entry of fine dust into the tool holder, to thereby improve the reproductivity of the accuracy of tool position at the time of tool exchange by a method wherein the tool holder itself is directly supported by fluid bearings and high pressure air is supplied to the bearings. CONSTITUTION:The tool holder 2 holding a tool within a housing section 1 fixed to the body of a machine tool and capable of being driven rotatably is supported by fluid bearing sections 3a and 3b. A rotor section 5a is provided in a holder 2 so as to rotate the latter and a stator 5b is provided in the housing section 1, to thereby constitute a motor-driven rotary drive device. The fluid bearing sections 3a and 3b are so formed that high pressure air is supplied to the sections through a supply passage A. For the bearings, a porous material such as ceramics is used. Further, to balance a thrust force applied on the bearings, magnets 4a and 4b are provided so as to prevent the tool holder from slipping out.

Description

【発明の詳細な説明】 本発明は、工作機械の加工用工具ホルダの保持装置と回
転駆動装置に関するものである。そして、とくにエンド
ミル加工を主体とする々シニングセンターあるし・は汎
用フライス工具ホルダに利用されるものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a holding device and a rotational drive device for a processing tool holder of a machine tool. In particular, thinning centers mainly used for end milling are used as general-purpose milling tool holders.

従来のマシニングセンターあるし・はフライス加工用工
具ホルダは、第１図を参照しつつ説明すると、テーパシ
ャンクの雌雄嵌合によって、工具の中心位置が定まり、
工具の回転は摩擦力による回転トルクの伝達によって行
なわれていた。In a conventional machining center or milling tool holder, referring to Fig. 1, the center position of the tool is determined by the male and female fitting of the taper shank.
Rotation of the tool was performed by transmitting rotational torque through frictional force.

図中、工具９を保持する工具ホルダ２は、工具ホルダ支
持具６にテーバ封孔嵌合で取付けられ、抜は止め具７で
工具ホルダ２が工作機械本体のノ・ウジング１から抜は
出ないようになっていた。そして工具ボルダ支持具６は
、その外周部が、軸受８．８で支持され、外部駆動モー
タＭによって、伝達ギヤＧ１、工具ホルダ支持具６に固
定されたギヤＧ２を介して回転され、さらに工具ホルダ
２を介して工具９が回転されていた。In the figure, the tool holder 2 that holds the tool 9 is attached to the tool holder support 6 by taper sealing fitting, and the tool holder 2 is removed from the nozzle 1 of the machine tool body by the removal stopper 7. It turned out that there was no such thing. The outer periphery of the tool boulder support 6 is supported by a bearing 8.8, and is rotated by an external drive motor M via a transmission gear G1 and a gear G2 fixed to the tool holder support 6. The tool 9 was being rotated via the holder 2.

上記のような工具ホルダの構造によると、テーパシャン
ク自体は、嵌合精度が悪く、カッターンレが数ミクロン
以下におさ°えられないし、工具の先端位置の狂いなど
を生じ、１０ミクロンをこえるため、インジェクション
モールド型加工のように、三次元加工を行なう場合など
、高（・精度の加工が期待できなかった。According to the structure of the tool holder as described above, the taper shank itself has poor fitting accuracy, and the cutting angle cannot be kept below a few microns, and the tip position of the tool may be misaligned, and it may exceed 10 microns. , When performing three-dimensional processing such as injection mold processing, high precision processing could not be expected.

また、工具交換を行なったとき、工具自体の回転中心か
らの偏荷重が保証できないため、高速回転をすると、振
動が発生し、それゆえ高速回転させることができない。Further, when a tool is replaced, it is not possible to guarantee that the tool itself will be loaded unbalanced from its center of rotation, so if the tool rotates at high speed, vibration will occur, and therefore high speed rotation will not be possible.

さらに、上記従来例以外のベルト駆動、ギヤ駆動などを
用いる場合でも、駆動モータから工具軸までの伝達機構
が長くなったり、複雑な機構となったシして、伝達機構
の各部分から生ずる振動発生がさけられない。Furthermore, even when using a belt drive, gear drive, etc. other than the conventional examples mentioned above, the transmission mechanism from the drive motor to the tool shaft becomes longer or more complicated, and vibrations generated from each part of the transmission mechanism are generated. Occurrence cannot be avoided.

本発明は、上述従来例の欠点を除去し、工具プリセット
は静的精度のみに限定されず、ロータとして動バランス
を考慮した工具プリセットを可能とし、工具交換に伴う
誤差がＯ８１ミクロン程度におさえられ、粗加工から仕
上加工に移る段階で、工具交換を行なっても、削りしる
が一定値におさえられるようにして加工精度を向上させ
、また、普通の複雑な伝動機構をなくして機械構成が単
純化されるとともに伝動機構の誤差、摩耗、熱による精
度劣化、および振動による騒音、工具寿命の低下などの
問題をなくした工作機械の加工用工具ホルダを提供する
ことを目的とする。The present invention eliminates the drawbacks of the conventional example described above, and enables tool presetting that takes into consideration the dynamic balance of the rotor, rather than being limited to static accuracy, and allows the error associated with tool exchange to be suppressed to about 081 microns. In the stage of transition from rough machining to finishing machining, machining accuracy is improved by keeping the cutting distance constant even when tools are changed, and the machine configuration is improved by eliminating the usual complicated transmission mechanism. It is an object of the present invention to provide a processing tool holder for a machine tool that is simplified and eliminates problems such as errors in the transmission mechanism, wear, accuracy deterioration due to heat, noise due to vibration, and shortened tool life.

以下、本発明の実施例を図面にもとづいて説明する。Embodiments of the present invention will be described below based on the drawings.

第２図に示す一実施例は、機械本体に固定されたハウジ
ング部１内に、工具９を保持しかつ回転部支持するとと
もに、工具ホルダ２を回転するために、回転子部５ａを
工具ホルダ２に設け、固定子部５ｂをハウジング部１に
設けて電動回転駆動装置（ビルトインモーター）を構成
し、また工具ホルダ２がハウジングから抜は出さないよ
うに保持するために磁石４ａ、４ｂを設けである。One embodiment shown in FIG. 2 holds a tool 9 in a housing part 1 fixed to a machine body, supports a rotating part, and also connects a rotor part 5a to a tool holder in order to rotate a tool holder 2. 2, a stator part 5b is provided in the housing part 1 to constitute an electric rotation drive device (built-in motor), and magnets 4a and 4b are provided to hold the tool holder 2 so that it does not come out of the housing. It is.

工具９を交換する場合、工具ホルダ２に新らしい別の工
具９を取付け、動バランスを取った工具ホルダ２をハウ
ジング１内に挿入する。工具ホルダ２には挿入し易くす
るために先端に球面部２ａが形成しである。流体軸受部
３ａ　、３ｂには高圧空気をその供給路Ａを通じて給気
するようになっている。図中供給路Ａ中の矢印は給気方
向を示している。軸受材料はセラミック、グラファイト
などの多孔質材を用いる。工具ボルダ２の１址および軸
受３ｂと工具ホルダ２のフランジ部２ｂとの間に発生す
るスラスト力をバランスさせるため磁石４ａ、４ｂが設
けられ工具ホルダ２の抜は止めを防止している。なお、
ビルトインタイブのモータとじて高周波モータ、ＤＣホ
ールモータなどの構成を採用することも可能である。When replacing the tool 9, a new tool 9 is attached to the tool holder 2, and the tool holder 2 with dynamic balance is inserted into the housing 1. The tool holder 2 has a spherical portion 2a formed at its tip to facilitate insertion. High-pressure air is supplied to the fluid bearing sections 3a and 3b through a supply path A thereof. The arrow in the supply path A in the figure indicates the air supply direction. The bearing material used is a porous material such as ceramic or graphite. Magnets 4a and 4b are provided to balance the thrust force generated between the base of the tool boulder 2, the bearing 3b, and the flange portion 2b of the tool holder 2, and prevent the tool holder 2 from being removed. In addition,
It is also possible to employ a configuration such as a high frequency motor or a DC Hall motor in addition to the built-in type motor.

第３図に示す他の実施例は、第２図の実施例１の磁石を
用いる代りに、工具ホルダ２を機械的に保持する例であ
る。供給路Ａ′を通じて高圧空気カー供給される流体軸
受部３Ｃを有する一対の支持部材４Ｃ，４ｃにより工具
ホルダ２のフランジ音μ２ｂにおし・て、工具ホルダ２
０重量およびスラスト力を支持している。該支持部材４
ｃ、４ｃ＆よ、工具ホルダ２を挿脱するとき、図中矢印
Ｆの方Ｕにあるいは逆方向に摺動することができるよう
になっている。Another embodiment shown in FIG. 3 is an example in which the tool holder 2 is held mechanically instead of using the magnet of the first embodiment shown in FIG. The flange sound μ2b of the tool holder 2 is caused by a pair of support members 4C and 4c having a fluid bearing portion 3C supplied with high-pressure air through the supply path A', and the tool holder 2 is
It supports zero weight and thrust force. The support member 4
c, 4c&, when inserting or removing the tool holder 2, it can be slid in the direction U of arrow F in the figure or in the opposite direction.

第４図に示す別の実施例は、工具ホルり２に半球面膨大
部１０を形成して、ノ・ウジング音ＢＮ貝０に凹球面状
をなす流体軸受３ｂで軸支し、工具軸にかかるモーメン
ト力を向上させ、上方に磁石４ａを設けたところに特徴
のある工具ホルり゛の変形伊すを示す。工具軸にモーメ
ント力カー力・力・つた時、球面全面で受けるので、片
当りもなく、抗力カ″−ｍｌ上する。In another embodiment shown in FIG. 4, a hemispherical enlarged portion 10 is formed in the tool holder 2, and the tool holder 2 is pivotally supported by a fluid bearing 3b having a concave spherical shape in order to reduce the nozzling sound. A modification of the tool holder is shown in which the moment force is improved and a magnet 4a is provided above. When a moment force is exerted on the tool shaft, it is received by the entire spherical surface, so there is no uneven contact, and the drag force increases by ″-ml.

第５図ないし第７図に示す実施例＆ま、そＪｔぞＪｔ上
記第２図ないし第４図に示す実施汐すに対して酬す部に
テーバな付けた形状の工具ホルダ２を用℃・た変形例を
示してあり、これらは工具７Ｉｚ　ルダ２の取付、取外
を容易にしたものである。Embodiments shown in FIGS. 5 to 7 &・Modifications are shown, which make it easier to install and remove the tool 7Iz rider 2.

本発明は、以上説明したように、工具ホルり゛自体を流
体軸受で直接支持した構成とすることによって、工具の
回転精度が向上し、また、高圧空気を流しているので、
細か（・コ゛ぜが混入せず、工具交換時の工具位置精度
の再現性が向上する。さらに、工具を含めた回転体を）
くランシングマシンにかけることにより動ノ（ランスを
工ｆＮ幾キ戒外で耳ｙλするので、高速回転に伴う振動
を予めｆｌｆｌｌ限することができる。As explained above, the present invention has a structure in which the tool holder itself is directly supported by a fluid bearing, thereby improving the rotational accuracy of the tool, and by flowing high-pressure air,
Fine (no cohesiveness, improving reproducibility of tool position accuracy when changing tools.Furthermore, rotating bodies including tools)
By applying the lance to a lancing machine, the lance is rotated at an outside angle, so vibrations caused by high-speed rotation can be limited in advance.

また、直接工具ホルダを回転するため、従来のように伝
達機構の構成要素による振動、熱の発生あるいは効率ダ
ウンの発生がなく、機械装置としてユニット化をはかる
ことができる効果カーある。In addition, since the tool holder is directly rotated, there is no vibration, heat generation, or efficiency reduction caused by the components of the transmission mechanism unlike in the past, and there is an advantage that the machine can be unitized as a mechanical device.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来例の工作機械における〃目丁用工具ホルダ
の断面図、第２図は本発明に係る工作機械の加工用工具
ホルダの一実施例の要部断面図、第３図な℃・し第７図
は、それぞれ他の実施例の要部断面図である。 ２・・・工具ホルダ、３ａ、３ｂ、３ｃ・・・流体軸受
、４ａ、４ｂ・・・磁石、４Ｃ・・・支持部材、５ａ・
・・電動回転駆動装置の回転子部、５ｂ・・・電動回転
駆動装第２図 第３図 第４図 縞５図 第６図Fig. 1 is a sectional view of a cutting tool holder in a conventional machine tool, Fig. 2 is a sectional view of essential parts of an embodiment of a machining tool holder for a machine tool according to the present invention, and Fig. 3・FIG. 7 is a sectional view of a main part of each other embodiment. 2... Tool holder, 3a, 3b, 3c... Fluid bearing, 4a, 4b... Magnet, 4C... Support member, 5a...
...Rotor part of electric rotary drive device, 5b...Electric rotary drive device Fig. 2 Fig. 3 Fig. 4 Stripes Fig. 5 Fig. 6

Claims (1)

【特許請求の範囲】[Claims] １　流体軸受で支持される工具ホルダ自体に電動回転駆
動装置を内装するとともに、工具ホルダの抜は止めを防
止する装置を設けたことを特徴とする工作機械の加工用
工具ホルダ。1. A processing tool holder for a machine tool, characterized in that the tool holder itself supported by a fluid bearing is equipped with an electric rotation drive device, and a device for preventing the tool holder from being removed.
JP57136224A 1982-08-06 1982-08-06 Machining tool holder for machine tool Granted JPS5930634A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57136224A JPS5930634A (en) 1982-08-06 1982-08-06 Machining tool holder for machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57136224A JPS5930634A (en) 1982-08-06 1982-08-06 Machining tool holder for machine tool

Publications (2)

Publication Number Publication Date
JPS5930634A true JPS5930634A (en) 1984-02-18
JPS6315096B2 JPS6315096B2 (en) 1988-04-02

Family

ID=15170191

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57136224A Granted JPS5930634A (en) 1982-08-06 1982-08-06 Machining tool holder for machine tool

Country Status (1)

Country Link
JP (1) JPS5930634A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63107502U (en) * 1986-12-26 1988-07-11
EP0286710A1 (en) * 1987-04-17 1988-10-19 Ibm Deutschland Gmbh Drilling unit
JP2005349527A (en) * 2004-06-10 2005-12-22 Yokohama National Univ Main spindle device, working device, and measuring device
WO2006134180A1 (en) * 2005-06-10 2006-12-21 Loxin 2002, S.L. Toolholder comprising a suction system
JP2009248224A (en) * 2008-04-03 2009-10-29 Waida Seisakusho:Kk Method of mounting rotary tool, rotary tool, machine tool, and apparatus for mounting rotary tool
CN110405230A (en) * 2018-04-26 2019-11-05 御成工业有限公司 Main axle structure
CN112475955A (en) * 2020-11-24 2021-03-12 厦门艺琉如机械有限公司 Crashproof cutter anchor clamps that digit control machine tool was used

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0345690U (en) * 1989-09-13 1991-04-26

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63107502U (en) * 1986-12-26 1988-07-11
EP0286710A1 (en) * 1987-04-17 1988-10-19 Ibm Deutschland Gmbh Drilling unit
US4913600A (en) * 1987-04-17 1990-04-03 International Business Machines Corporation Drilling unit
US5002441A (en) * 1987-04-17 1991-03-26 International Business Machines Corporation Drilling unit
JP2005349527A (en) * 2004-06-10 2005-12-22 Yokohama National Univ Main spindle device, working device, and measuring device
WO2006134180A1 (en) * 2005-06-10 2006-12-21 Loxin 2002, S.L. Toolholder comprising a suction system
ES2293775A1 (en) * 2005-06-10 2008-03-16 Loxin 2002, S.L. Toolholder comprising a suction system
JP2009248224A (en) * 2008-04-03 2009-10-29 Waida Seisakusho:Kk Method of mounting rotary tool, rotary tool, machine tool, and apparatus for mounting rotary tool
CN110405230A (en) * 2018-04-26 2019-11-05 御成工业有限公司 Main axle structure
CN112475955A (en) * 2020-11-24 2021-03-12 厦门艺琉如机械有限公司 Crashproof cutter anchor clamps that digit control machine tool was used

Also Published As

Publication number Publication date
JPS6315096B2 (en) 1988-04-02

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