JP2000308941A - Toolholder structure and tool holding device - Google Patents
Toolholder structure and tool holding deviceInfo
- Publication number
- JP2000308941A JP2000308941A JP11118334A JP11833499A JP2000308941A JP 2000308941 A JP2000308941 A JP 2000308941A JP 11118334 A JP11118334 A JP 11118334A JP 11833499 A JP11833499 A JP 11833499A JP 2000308941 A JP2000308941 A JP 2000308941A
- Authority
- JP
- Japan
- Prior art keywords
- tool
- holder
- vibration
- shank
- damping member
- 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
Links
Landscapes
- Auxiliary Devices For Machine Tools (AREA)
- Jigs For Machine Tools (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば切削工具の
振動を減衰することのできる工具ホルダ構造及び工具保
持装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool holder structure and a tool holding device which can attenuate, for example, vibration of a cutting tool.
【０００２】[0002]
【従来の技術】ワークに深溝を加工するときに、溝の深
さに応じた長さの切削工具を使用するが、切削工具が長
くなると切削時に振動が発生し易くなる。切削工具に振
動が発生すると、切削工具の寿命が短くなり、また深溝
の加工精度を十分に確保することができない虞がある。
この問題を解消するために、例えば特開平６−３１５０
７号公報の「旋削工具」が提案されており、この技術の
要旨を次図に示す2. Description of the Related Art When machining a deep groove in a work, a cutting tool having a length corresponding to the depth of the groove is used. However, if the cutting tool is long, vibration is likely to occur during cutting. When vibration occurs in the cutting tool, the life of the cutting tool may be shortened, and sufficient machining accuracy of the deep groove may not be ensured.
In order to solve this problem, for example, Japanese Patent Laid-Open No. 6-3150
No. 7, "turning tool" has been proposed, and the gist of this technology is shown in the following figure.
【０００３】図６は従来の工具の断面図であり、ホルダ
本体１００に収納穴１０１を形成し、ウエイト１０２を
弾性体１０３でヘッド１０５に取り付け、収納穴１０１
内に粘流体１０７を充填した状態でヘッド１０５をホル
ダ本体１００にねじ結合して収納穴１０１にウエイト１
０２を収納する。このヘッド１０５は切刃１０８を備え
る。FIG. 6 is a sectional view of a conventional tool, in which a storage hole 101 is formed in a holder body 100, a weight 102 is attached to a head 105 by an elastic body 103, and the storage hole 101 is formed.
The head 105 is screwed to the holder main body 100 in a state where the viscous fluid 107 is filled therein, and the weight 1 is
02 is stored. The head 105 has a cutting blade 108.
【０００４】切刃１０８でワークを加工する際に、工具
に振動が発生してウエイト１０２が固有の振動数（以
下、固有振動数という）で振動する。従って、ウエイト
１０２の固有振動数をホルダ本体１００の固有振動数に
一致させ、かつウエイト１０２の周期がホルダ本体１０
０の周期と逆相になるようにウエイト１０２を振動させ
ることによりホルダ本体１００の振動を減衰することが
できる。When the workpiece is machined by the cutting blade 108, vibration occurs in the tool, and the weight 102 vibrates at a natural frequency (hereinafter, referred to as a natural frequency). Therefore, the natural frequency of the weight 102 is made to match the natural frequency of the holder body 100, and the cycle of the weight 102 is
By vibrating the weight 102 so as to have a phase opposite to the cycle of 0, the vibration of the holder body 100 can be attenuated.
【０００５】[0005]
【発明が解決しようとする課題】しかし、ヘッド１０５
には弾性体１０３を介してウエイト１０２が取り付けら
れているので、ヘッド１０５を交換する場合には、ウエ
イト１０２の固有振動数を再度調整しなければならな
い。このため、ヘッド１０５の交換には時間がかかる。
従って、ヘッド１０５に取り付けた切刃１０８が損耗し
ても、切刃１０８の交換に時間がかかり、切刃１０８を
簡単に交換することができない。However, the head 105
Since the weight 102 is attached via the elastic body 103, when the head 105 is replaced, the natural frequency of the weight 102 must be adjusted again. Therefore, it takes time to replace the head 105.
Therefore, even if the cutting blade 108 attached to the head 105 is worn, it takes time to replace the cutting blade 108, and the cutting blade 108 cannot be easily replaced.
【０００６】そこで、本発明の目的は、防振用の工具の
交換を簡単に行うことができる技術を提供することにあ
る。It is an object of the present invention to provide a technique capable of easily exchanging a vibration-proof tool.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に本発明の請求項１は、先端に工具を着脱可能に固定す
る工具把持手段を備えたホルダ本体と、工具把持手段で
把持した工具の背面に接触して振動を減衰する減衰部材
と、この減衰部材の背面に接触し振動エネルギーを吸収
する吸震ウエイトと、この吸震ウエイトを前記減衰部材
を介して工具へ押圧する弾性部材と、この弾性部材をホ
ルダ本体に止めるスプリング端固定部材とから工具ホル
ダ構造を構成する。According to a first aspect of the present invention, there is provided a holder body having a tool holding means for detachably fixing a tool at a tip, and a tool held by the tool holding means. A damping member that contacts the back surface of the damping member to attenuate vibration, a vibration absorbing weight that contacts the back surface of the damping member and absorbs vibration energy, an elastic member that presses the vibration absorbing weight to a tool via the damping member, A tool holder structure is constituted by a spring end fixing member for fixing the elastic member to the holder body.
【０００８】ホルダ本体に振動が発生すると、減衰部材
及び弾性部材で支えた吸震ウエイトが振動してホルダ本
体の振動を減衰することができる。また、工具の背面に
減衰部材が接触しているので、工具に発生した振動を減
衰部材で減衰させることができる。さらに、工具をホル
ダ本体に工具把持手段で取り付ける構成にしたので、工
具の脱着を簡単に行うことができる。このため、例えば
工具の切刃が損耗したとき、時間をかけないで新たな工
具と交換することができる。When vibration occurs in the holder main body, the vibration absorbing weight supported by the damping member and the elastic member vibrates, and the vibration of the holder main body can be attenuated. Further, since the damping member is in contact with the back surface of the tool, vibration generated in the tool can be damped by the damping member. Furthermore, since the tool is configured to be attached to the holder body by the tool gripping means, the tool can be easily attached and detached. Therefore, for example, when the cutting edge of the tool is worn, it can be replaced with a new tool without taking much time.
【０００９】請求項２は、請求項１記載の工具ホルダ
と、この工具ホルダを工作機械のスピンドルに取り付け
る為のシャンクと、このシャンクをスピンドルに抜差し
するためにシャンクに形成した把持用フランジとからな
り、スピンドルからシャンクを脱着すること、シャンク
から工具ホルダを脱着すること、工具ホルダから工具を
脱着することのいずれかが自在に行えることを特徴とす
る。According to a second aspect of the present invention, there is provided a tool holder according to the first aspect, a shank for attaching the tool holder to a spindle of a machine tool, and a grip flange formed on the shank for inserting and removing the shank from the spindle. It is characterized in that one of detaching the shank from the spindle, detaching the tool holder from the shank, and detaching the tool from the tool holder can be performed freely.
【００１０】スピンドルからシャンクを外して、シャン
クから工具ホルダを外すことができるので、シャンクを
交換して工具ホルダを他の工作機械に適合させることが
できる。また、工具ホルダから工具を簡単に取外すこと
ができるので、例えば工具の切刃が損耗しても、新たな
工具と交換して工具ホルダを継続して使用することがで
きる。[0010] Since the shank can be removed from the spindle and the tool holder can be removed from the shank, the shank can be exchanged to adapt the tool holder to another machine tool. Further, since the tool can be easily removed from the tool holder, even if the cutting edge of the tool is worn, for example, it can be replaced with a new tool and the tool holder can be used continuously.
【００１１】[0011]
【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。なお、図面は符号の向きに見る
ものとする。図１は本発明に係る工具保持装置を使用す
るＮＣ工作機械の斜視図であり、図左上に示すＸはテー
ブルの移動方向、ＹはＸに直交する軸、ＺはＸ，Ｙに直
交する鉛直軸である。Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a perspective view of an NC machine tool using a tool holding device according to the present invention. In the upper left part of the figure, X is a table moving direction, Y is an axis orthogonal to X, and Z is a vertical axis orthogonal to X and Y. Axis.
【００１２】ＮＣ工作機械１は、ベース２ａにＸ軸方向
に移動自在に取付けたテーブル２ｂと、このテーブル２
ｂの両側から上部に配置したコラム３と、このコラム３
に固定したクロスレール４と、このクロスレール４にＹ
軸方向に移動自在に取付けた主軸部５ａと、この主軸部
５ａにＺ軸方向に移動自在に設けた主軸５ｂと、この主
軸５ｂに取り付けた本発明に係る切削工具装置１０と、
Ｘ軸，Ｙ軸，Ｚ軸の３軸の移動（切削条件）を制御する
制御盤６ａ及び操作盤６ｂと、切削工具装置１０ａ・・・
（・・・は複数を示す。以下同様。）を交換する自動工具
交換装置７とからなる。８はテーブル２ａ上に取付けた
ワークである。An NC machine tool 1 includes a table 2b movably mounted on a base 2a in the X-axis direction, and a table 2b.
b, a column 3 arranged at the top from both sides, and this column 3
And a cross rail 4 fixed to the
A main shaft portion 5a movably mounted in the axial direction, a main shaft 5b movably provided in the Z-axis direction on the main shaft portion 5a, and a cutting tool device 10 according to the present invention mounted on the main shaft 5b;
A control panel 6a and an operation panel 6b for controlling movement (cutting conditions) of three axes of X-axis, Y-axis, and Z-axis, and a cutting tool device 10a ...
(... indicates a plurality. The same shall apply hereinafter.). Reference numeral 8 denotes a work mounted on the table 2a.
【００１３】自動工具交換装置７は、ツールマガジン７
ａとチェンジャアーム７ｂとからなり、ツールマガジン
７ａは切削工具装置１０ａ・・・を予め納めておくもので
あり、チェンジャアーム７ｂは主軸５ｂの切削工具装置
１０をツールマガジン７ａの切削工具装置１０ａ・・・と
交換するものである。以下に、本発明に係る切削工具装
置１０を説明する。The automatic tool changer 7 includes a tool magazine 7
a and a changer arm 7b. The tool magazine 7a stores cutting tool devices 10a... in advance.・ ・ Replace with Hereinafter, the cutting tool device 10 according to the present invention will be described.
【００１４】図２は本発明に係る工具保持装置の断面図
である。工具保持装置１０は、工具１２を保持する工具
ホルダ２０と、この工具ホルダ２０を工作機械のスピン
ドル５８に取り付ける為のシャンク６０と、このシャン
ク６０をスピンドル５８に抜差しするためにシャンク６
０に形成した把持用フランジ６３とからなる。工具１２
は、例えば球状の底刃１２ａをもつボールエンドミルで
あって、鋳造金型等のワークに深溝を加工するものであ
る。FIG. 2 is a sectional view of the tool holding device according to the present invention. The tool holding device 10 includes a tool holder 20 for holding the tool 12, a shank 60 for attaching the tool holder 20 to a spindle 58 of a machine tool, and a shank 6 for inserting and removing the shank 60 from the spindle 58.
And a gripping flange 63 formed at zero. Tool 12
Is a ball end mill having a spherical bottom blade 12a, for example, for forming a deep groove in a work such as a casting die.
【００１５】工具ホルダ２０は、工具１２を着脱可能に
固定する工具把持手段２２を先端３０ａに備えたホルダ
本体３０と、工具把持手段２２で把持した工具１２の背
面１３に接触して振動を減衰する減衰部材４０と、この
減衰部材４０の背面４１に接触し振動エネルギーを吸収
する吸震ウエイト４５と、この吸震ウエイト４５を減衰
部材４０を介して工具１２へ押圧する弾性部材としての
スプリング５０と、このスプリング５０の他端５１をホ
ルダ本体３０に止めるスプリング端固定部材５５とから
なる。The tool holder 20 comes into contact with a holder body 30 provided with a tool gripping means 22 at its tip 30a for detachably fixing the tool 12 and a back surface 13 of the tool 12 gripped by the tool gripping means 22 to attenuate vibration. A damping member 40, a vibration absorbing weight 45 that contacts the back surface 41 of the damping member 40 and absorbs vibration energy, a spring 50 as an elastic member that presses the vibration absorbing weight 45 to the tool 12 via the damping member 40, The spring 50 includes a spring end fixing member 55 for fixing the other end 51 of the spring 50 to the holder body 30.
【００１６】工具把持手段２２は、ホルダ本体３０のテ
ーパ穴３５にコレットチャック２３を差し込んで、コレ
ットチャック２３の外周テーパ面２３ａをテーパ穴３５
の内周テーパ面３５ａに接触させ、コレットチャック２
３の先端溝２３ｂに押付リング２５の内周２５ａを差し
込み、押付リング２５の外周に連結リング２６でナット
２７を連結し、ナット２７をホルダ本体３０の先端ねじ
部３４にねじ結合したものである。The tool gripping means 22 inserts the collet chuck 23 into the tapered hole 35 of the holder body 30 and makes the outer peripheral tapered surface 23a of the collet chuck 23 tapered.
Contact the inner peripheral tapered surface 35a of the collet chuck 2
3, the inner circumference 25a of the pressing ring 25 is inserted into the tip groove 23b, the nut 27 is connected to the outer circumference of the pressing ring 25 by a connecting ring 26, and the nut 27 is screw-connected to the tip screw portion 34 of the holder body 30. .
【００１７】このため、把持ナット２７を締め付ける
と、押付リング２５を介してコレットチャック２３をホ
ルダ本体３０側に押し付け、コレットチャック２３の外
周テーパ面２３ａをホルダ本体３０の内周テーパ面３５
ａに押し付け、コレットチャック２３を縮径して工具１
２を把持することができる。また、把持ナット２７を緩
めることにより、コレットチャック２３を拡径して工具
１２を簡単に取り外すことができる。For this reason, when the holding nut 27 is tightened, the collet chuck 23 is pressed against the holder main body 30 via the pressing ring 25, and the outer peripheral tapered surface 23 a of the collet chuck 23 is fixed to the inner peripheral tapered surface 35 of the holder main body 30.
a to reduce the diameter of the collet chuck 23 and
2 can be gripped. Further, by loosening the grip nut 27, the diameter of the collet chuck 23 can be increased and the tool 12 can be easily removed.
【００１８】工具１２をホルダ本体３０にコレットチャ
ック２３で取り付ける構成にしたので、工具１２の脱着
を簡単に行うことができる。このため、例えば工具１２
の切刃１２ａが損耗したとき、時間をかけないで新たな
工具１２と交換することができる。Since the tool 12 is attached to the holder body 30 by the collet chuck 23, the tool 12 can be easily attached and detached. Therefore, for example, the tool 12
When the cutting edge 12a is worn out, it can be replaced with a new tool 12 in a short time.
【００１９】ホルダ本体３０は、把持用フランジ６３に
ボルト３１で取り付け可能なフランジ３２を形成し、後
端外周にシャンク６０のテーパ穴６５に差し込むための
テーパ部３３を形成し、先端外周にナット２７をねじ結
合するための先端ねじ部３４を形成し、先端にコレット
チャック２３を差し込むためのテーパ穴３５を形成し、
テーパ穴３５の後方に工具１２を差し込むための差込穴
３６を形成し、差込穴３６の後方に減衰部材４０、吸震
ウエイト４５、スプリング５０、スプリング端固定部材
５５をこの順に直列に収納するための収納穴３７を形成
し、収納穴３７の後端にスプリング端固定部材５５をね
じ結合するためのねじ部３８を形成した筒形部材であ
る。ホルダ本体３０は、ボルト３１を緩めることでシャ
ンク６０から取り外すことができる。The holder main body 30 has a flange 32 which can be attached to the gripping flange 63 with the bolt 31, a tapered portion 33 for being inserted into a tapered hole 65 of the shank 60 at the rear end outer periphery, and a nut at the front end outer periphery. 27, a tip screw portion 34 for screw connection is formed, and a taper hole 35 for inserting the collet chuck 23 at the tip is formed.
An insertion hole 36 for inserting the tool 12 is formed behind the tapered hole 35, and the damping member 40, the vibration absorbing weight 45, the spring 50, and the spring end fixing member 55 are accommodated in this order in series behind the insertion hole 36. A cylindrical member having a storage hole 37 formed therein, and a screw portion 38 for screw-connecting the spring end fixing member 55 to the rear end of the storage hole 37. The holder body 30 can be removed from the shank 60 by loosening the bolt 31.
【００２０】減衰部材４０は、ウレタンゴムなどの弾性
変形可能な有機高分子樹脂で円板上に形成し、ホルダ本
体３０の収納穴３７の先端３７ａに前面４２を接触させ
た部材であって、前面４２に工具１２の背面１３を押し
付けたものである。工具１２の背面１３に減衰部材４０
を押し付けることにより、工具１２に発生した振動を減
衰部材４０まで伝えて、減衰部材４０で減衰することが
できる。吸震ウエイト４５は、収納穴３７に移動自在に
収納して前面４６を減衰部材４０の背面４１に押し付
け、背面４７をスプリング５０で押し付けた超強力鋼製
の円柱体であって、減衰部材４０及びスプリング５０で
振動可能に支えた部材である。The damping member 40 is a member made of an elastically deformable organic polymer resin such as urethane rubber and formed on a disk, and the front surface 42 is brought into contact with the front end 37 a of the storage hole 37 of the holder body 30. The rear surface 13 of the tool 12 is pressed against the front surface 42. A damping member 40 is provided on the back surface 13 of the tool 12.
, The vibration generated in the tool 12 is transmitted to the damping member 40 and can be damped by the damping member 40. The vibration-absorbing weight 45 is a cylinder made of ultra-high-strength steel, which is movably housed in the storage hole 37, presses the front surface 46 against the back surface 41 of the damping member 40, and presses the back surface 47 with a spring 50. It is a member supported by a spring 50 so as to be able to vibrate.
【００２１】このため、一例として吸震ウエイト４５の
質量や、減衰部材４０及びスプリング５０のばね定数を
所定値に設定することにより、吸震ウエイト４５をホル
ダ本体３０の固有振動数と同じ固有振動数で振動させ、
且つホルダ本体３０の周期とは逆相の周期で振動させる
ことができる。For this reason, as an example, by setting the mass of the vibration absorbing weight 45 and the spring constants of the damping member 40 and the spring 50 to predetermined values, the vibration absorbing weight 45 is made to have the same natural frequency as the natural frequency of the holder body 30. Vibrate,
In addition, it is possible to vibrate at a period opposite to the period of the holder body 30.
【００２２】シャンク６０は、図１に示す主軸５ｂのス
ピンドル５８に差込むための外周テーパ部６１を形成
し、前端にシャンク６０をスピンドル５８に抜差しする
ときに把持する把持用フランジ６３を形成し、前端にホ
ルダ本体３０のテーパ部３３を差し込むためのテーパ穴
６５を形成したものである。５９はシャンク６０にねじ
結合したつかみ部であり、５９ａ，５９ａはつかみ部６
０を掴む爪である。従って、爪５９ａ，５９ａをつかみ
部６０から解放することにより、シャンク６０を取り外
すことができる。The shank 60 has a tapered outer periphery 61 for insertion into the spindle 58 of the main shaft 5b shown in FIG. 1, and a gripping flange 63 at the front end for gripping the shank 60 when the shank 60 is inserted into or removed from the spindle 58. A tapered hole 65 is formed at the front end for inserting the tapered portion 33 of the holder body 30. Reference numeral 59 denotes a grip portion screwed to the shank 60, and 59a and 59a are grip portions 6
It is a claw that grabs 0. Therefore, the shank 60 can be removed by releasing the claws 59a, 59a from the grip portion 60.
【００２３】このため、工具保持装置１０は、スピンド
ル５８からシャンク６０を脱着すること、シャンク６０
から工具ホルダ２０を脱着すること、工具ホルダ２０か
ら工具１２を脱着することのいずれかが自在に行える。For this reason, the tool holding device 10 is capable of detaching the shank 60 from the spindle 58,
The tool holder 20 can be detached from the tool holder 20 or the tool 12 can be detached from the tool holder 20 freely.
【００２４】従って、シャンク６０を交換することによ
り、工具ホルダ２０を他の工作機械に取り付けることが
できる。このため、工具ホルダ２０を複数の工作機械に
汎用的に使用することができる。また、工具ホルダ２０
から工具１２を簡単に取り外すことができるので、例え
ば工具１２の切刃が損耗しても、新たな工具１２と交換
して工具ホルダ２０を継続して使用することができる。Therefore, by exchanging the shank 60, the tool holder 20 can be mounted on another machine tool. For this reason, the tool holder 20 can be generally used for a plurality of machine tools. Also, the tool holder 20
Since the tool 12 can be easily removed from the tool holder, for example, even if the cutting edge of the tool 12 is worn, the tool holder 20 can be continuously used by replacing it with a new tool 12.
【００２５】以上に述べた本発明に係る工具ホルダ構造
の作用を説明する。なお、減衰部材４０は有機高分子樹
脂であるが、作用を理解しやすくするためにばね部に置
き換えて説明する。図３（ａ）〜（ｃ）は本発明に係る
工具ホルダ構造の第１作用説明図であり、ホルダ本体３
０に発生した振動を減衰する例を説明する図である。
（ａ）において、工具保持装置１０を矢印の如く回転
させながら矢印の如く移動して工具１２でワーク８を
加工する。このとき、工作機械側の振動が矢印の如く
シャンク６０からホルダ本体３０に伝わり、ホルダ本体
３０は白抜き矢印の如く振動する。吸震ウエイト４５
は弾性変形可能な減衰部材４０及びスプリング５０で支
えているので、吸震ウエイト４５は静止した状態を保
つ。The operation of the above-described tool holder structure according to the present invention will be described. The damping member 40 is made of an organic polymer resin, but will be described by replacing the damping member with a spring for easy understanding of the operation. 3 (a) to 3 (c) are first operation explanatory views of the tool holder structure according to the present invention, and the holder main body 3 is shown.
It is a figure explaining the example which attenuates the vibration generated in zero.
3A, the workpiece 8 is machined by the tool 12 by moving the tool holding device 10 as shown by the arrow while rotating it as shown by the arrow. At this time, the vibration on the machine tool side is transmitted from the shank 60 to the holder main body 30 as indicated by an arrow, and the holder main body 30 vibrates as indicated by a white arrow. Seismic absorption weight 45
Is supported by the elastically deformable damping member 40 and the spring 50, so that the vibration absorbing weight 45 remains stationary.
【００２６】（ｂ）において、吸震ウエイト４５は静止
した状態を保つことで、減衰部材４０が伸長して、スプ
リング５０が収縮する。従って、吸震ウエイト４５は白
抜き矢印の如く振動する。同時にホルダ本体３０は白
抜き矢印の如く（ａ）と逆方向に振動する。In (b), the vibration absorbing weight 45 is kept stationary, so that the damping member 40 expands and the spring 50 contracts. Therefore, the vibration absorption weight 45 vibrates as indicated by the white arrow. At the same time, the holder body 30 vibrates in the opposite direction as shown in FIG.
【００２７】（ｃ）において、減衰部材４０が収縮し
て、スプリング５０が伸長する。従って、吸震ウエイト
４５は白抜き矢印の如く振動する。同時にホルダ本体
３０は白抜き矢印の如く（ｂ）と逆方向に振動する。
従って、この条件で吸震ウエイト４５を振動させること
によりホルダ本体３０の振動を減衰することができる。In (c), the damping member 40 contracts and the spring 50 extends. Therefore, the vibration absorption weight 45 vibrates as indicated by the white arrow. At the same time, the holder body 30 vibrates in the opposite direction as shown in FIG.
Therefore, by vibrating the vibration absorbing weight 45 under this condition, the vibration of the holder body 30 can be attenuated.
【００２８】図４は本発明に係る工具ホルダ構造の第２
作用説明図であり、工具１２に発生した振動を減衰する
例を説明した図である。工具保持装置１０を矢印の如
く回転させながら矢印の如く移動して工具１２でワー
ク８を加工する。このとき、工具１２が白抜き矢印の如
く振動して、この振動が矢印の如く工具１２の背面１
３から減衰部材４０に伝わる。従って、減衰部材４０で
工具１２に発生した振動を減衰することができる。FIG. 4 shows a second embodiment of the tool holder structure according to the present invention.
FIG. 8 is an operation explanatory diagram illustrating an example of attenuating vibration generated in the tool 12. The workpiece 8 is machined by the tool 12 by moving the tool holding device 10 as shown by the arrow while rotating it as shown by the arrow. At this time, the tool 12 vibrates as indicated by a white arrow, and the vibration is generated as shown by an arrow on the rear surface 1 of the tool 12.
3 to the damping member 40. Therefore, the vibration generated in the tool 12 can be damped by the damping member 40.
【００２９】図５（ａ），（ｂ）は本発明に係る工具ホ
ルダの減衰状態を説明するグラフであり、（ａ）は減衰
手段を備えない工具保持装置の振動加速度を「比較例」
として示し、（ｂ）は図１〜図３で説明した工具保持装
置１０の振動加速度を「実施例」として示した。縦軸は
加速度（Ｇ）を示し、横軸は加工時間（Ｔ）を示す。FIGS. 5A and 5B are graphs for explaining the damping state of the tool holder according to the present invention. FIG. 5A shows the vibration acceleration of the tool holding device having no damping means as a “comparative example”.
(B) shows the vibration acceleration of the tool holding device 10 described with reference to FIGS. 1 to 3 as “Example”. The vertical axis indicates acceleration (G), and the horizontal axis indicates machining time (T).
【００３０】切削条件は、工具の突出長さＬを８０ｍ
ｍ、工具の回転数Ｒを１２０００ｒｐｍとして、鋳造金
型に切削深さ６７．５ｍｍの深溝を粗加工し、このとき
に工具に発生する加速度Ｇを計測し、さらに加工精度を
確認した。（ａ）は、工具の最大加速度は３．１Ｇであ
り、ワークの加工精度を十分に高め難いことが判った。
（ｂ）は、工具の最大加速度は０．９Ｇであり、（ａ）
の最大加速度３．１Ｇと比較すると約１／３に減衰し
て、ワークの加工精度を十分に高めることができること
が判った。The cutting conditions were such that the tool projection length L was 80 m.
m and the rotational speed R of the tool were set to 12000 rpm, and a deep groove having a cutting depth of 67.5 mm was roughly machined in the casting mold. The acceleration G generated in the tool at this time was measured, and the machining accuracy was further confirmed. In (a), it was found that the maximum acceleration of the tool was 3.1 G, and it was difficult to sufficiently increase the processing accuracy of the work.
In (b), the maximum acceleration of the tool is 0.9 G, and (a)
Compared with the maximum acceleration of 3.1 G, it was found to be reduced to about 1/3, and that the machining accuracy of the work can be sufficiently improved.
【００３１】前記実施例では、工具保持装置１０を工作
機械に横向きにセットした例を説明したが、縦向きにセ
ットしても同様な効果を得ることができる。減衰部材４
０をウレタンゴムなどの弾性変形可能な有機高分子樹脂
で形成した例を説明したが、その他の弾性変形可能な樹
脂で形成してもよく、またスプリングを使用してもよ
い。弾性部材５０は、スプリングを使用した例を説明し
たが、樹脂などの弾性部材を使用してもよい。In the above embodiment, an example was described in which the tool holding device 10 was set horizontally on the machine tool. However, the same effect can be obtained by setting the tool holding device 10 vertically. Damping member 4
Although the example in which O is formed of an elastically deformable organic polymer resin such as urethane rubber has been described, it may be formed of another elastically deformable resin, or a spring may be used. The example in which a spring is used as the elastic member 50 has been described, but an elastic member such as a resin may be used.
【００３２】[0032]
【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項１は、工具をホルダ本体にコレットチャッ
クで取り付ける構成にしたので、工具の脱着を簡単に行
うことができる。このため、例えば工具の切刃が損耗し
たとき、時間をかけないで新たな工具と交換することが
できるので、使い勝手がよくなる。According to the present invention, the following effects are exhibited by the above configuration. In the first aspect, the tool is attached to the holder body by the collet chuck, so that the tool can be easily attached and detached. For this reason, for example, when the cutting edge of the tool is worn out, it can be replaced with a new tool without taking much time, and the usability is improved.
【００３３】また、ホルダ本体に振動が発生すると、減
衰部材及び弾性部材で支えた吸震ウエイトが振動してホ
ルダ本体の振動を減衰することができる。また、工具の
背面に減衰部材が接触しているので、工具に発生した振
動を減衰部材で減衰することができる。このように、ホ
ルダ本体及び工具の各々の振動を減衰することができる
ので、切削工具の寿命を長くすることができ、また深溝
の加工精度を高めることができる。Further, when vibration is generated in the holder main body, the vibration absorbing weight supported by the damping member and the elastic member vibrates, and the vibration of the holder main body can be attenuated. Further, since the damping member is in contact with the back surface of the tool, vibration generated in the tool can be damped by the damping member. Thus, since the vibration of each of the holder body and the tool can be attenuated, the life of the cutting tool can be prolonged, and the machining accuracy of the deep groove can be enhanced.
【００３４】請求項２は、スピンドルからシャンクを脱
着すること、シャンクから工具ホルダを脱着すること、
工具ホルダから工具を脱着することのいずれかが自在に
行える。このため、スピンドルからシャンクを外して、
シャンクから工具ホルダを外すことができるので、シャ
ンクを交換して工具ホルダを他の工作機械に適合させる
ことができる。この結果、工具ホルダを複数の工作機械
に汎用的に使用することができる。また、工具ホルダか
ら工具を簡単に取外すことができるので、例えば工具の
切刃が損耗しても、新たな工具と交換して工具ホルダを
継続して使用することができる。Claim 2 is for removing and attaching the shank from the spindle, and removing and attaching the tool holder from the shank.
Either attachment or detachment of the tool from the tool holder can be freely performed. For this reason, remove the shank from the spindle,
Since the tool holder can be removed from the shank, the shank can be exchanged to adapt the tool holder to another machine tool. As a result, the tool holder can be generally used for a plurality of machine tools. Further, since the tool can be easily removed from the tool holder, even if the cutting edge of the tool is worn, for example, it can be replaced with a new tool and the tool holder can be used continuously.
【図１】本発明に係る工具保持装置を使用するＮＣ工作
機械の斜視図FIG. 1 is a perspective view of an NC machine tool using a tool holding device according to the present invention.
【図２】本発明に係る工具保持装置の断面図FIG. 2 is a cross-sectional view of the tool holding device according to the present invention.
【図３】本発明に係る工具ホルダ構造の第１作用説明図FIG. 3 is a first operation explanatory view of the tool holder structure according to the present invention;
【図４】本発明に係る工具ホルダ構造の第２作用説明図FIG. 4 is a diagram illustrating a second operation of the tool holder structure according to the present invention.
【図５】本発明に係る工具ホルダの減衰状態を説明する
グラフFIG. 5 is a graph illustrating a damping state of the tool holder according to the present invention.
【図６】従来の旋削工具の断面図FIG. 6 is a sectional view of a conventional turning tool.
１０…工具保持装置、１２…工具、１３…工具の背面、
２０…工具ホルダ、２２…工具把持装置、３０…ホルダ
本体、４０…減衰部材、４１…減衰部材の背面、４５…
吸震ウエイト、５０…弾性部材（スプリング）、５１…
他端、５５…スプリング端固定部材、５８…スピンド
ル、６０…シャンク、６３…把持用フランジ。10: tool holding device, 12: tool, 13: back of tool,
Reference numeral 20: tool holder, 22: tool holding device, 30: holder body, 40: damping member, 41: back surface of the damping member, 45:
Seismic absorption weight, 50 ... Elastic member (spring), 51 ...
The other end, 55: spring end fixing member, 58: spindle, 60: shank, 63: gripping flange.
フロントページの続き (72)発明者 伊東 勲 埼玉県狭山市新狭山１丁目10番地１ ホン ダエンジニアリング株式会社内 (72)発明者 林 明成 埼玉県狭山市新狭山１丁目10番地１ ホン ダエンジニアリング株式会社内 Ｆターム(参考） 3C011 AA06 3C016 BA08 CA07 FA03 FA22 FA23 3C046 KK02 3J048 AA02 AD07 BC02 BD02 BF04 DA04 EA13 Continued on the front page (72) Inventor Isao Ito 1-10-1 Shinsayama, Sayama City, Saitama Prefecture Inside Honda Engineering Co., Ltd. (72) Inventor Akinari Hayashi 1-10-1 Shinsayama, Sayama City, Saitama Prefecture Honda Engineering Stock In-house F term (reference) 3C011 AA06 3C016 BA08 CA07 FA03 FA22 FA23 3C046 KK02 3J048 AA02 AD07 BC02 BD02 BF04 DA04 EA13
Claims (2)
持手段を備えたホルダ本体と、工具把持手段で把持した
工具の背面に接触して振動を減衰する減衰部材と、この
減衰部材の背面に接触し振動エネルギーを吸収する吸震
ウエイトと、この吸震ウエイトを前記減衰部材を介して
工具へ押圧する弾性部材と、この弾性部材をホルダ本体
に止めるスプリング端固定部材とからなる工具ホルダ構
造。1. A holder body having a tool holding means for detachably fixing a tool at a tip thereof, a damping member for abutting a back surface of the tool held by the tool holding means to attenuate vibration, and a back surface of the damping member. A tool holder structure comprising: a vibration absorbing weight that contacts vibration absorbing energy to absorb vibration energy; an elastic member that presses the vibration absorbing weight to a tool via the damping member; and a spring end fixing member that stops the elastic member to the holder body.
ホルダを工作機械のスピンドルに取り付ける為のシャン
クと、このシャンクをスピンドルに抜差しするためにシ
ャンクに形成した把持用フランジとからなり、前記スピ
ンドルからシャンクを脱着すること、シャンクから工具
ホルダを脱着すること、工具ホルダから工具を脱着する
ことのいずれかが自在に行えることを特徴とする工具保
持装置。2. The tool holder according to claim 1, comprising a shank for attaching the tool holder to a spindle of a machine tool, and a gripping flange formed on the shank for inserting and removing the shank from the spindle. A tool holding device capable of freely detaching a shank from a spindle, detaching a tool holder from a shank, and detaching a tool from a tool holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11833499A JP4190652B2 (en) | 1999-04-26 | 1999-04-26 | Tool holder structure and tool holding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11833499A JP4190652B2 (en) | 1999-04-26 | 1999-04-26 | Tool holder structure and tool holding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000308941A true JP2000308941A (en) | 2000-11-07 |
| JP4190652B2 JP4190652B2 (en) | 2008-12-03 |
Family
ID=14734104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11833499A Expired - Lifetime JP4190652B2 (en) | 1999-04-26 | 1999-04-26 | Tool holder structure and tool holding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4190652B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298474C (en) * | 2002-03-04 | 2007-02-07 | 三菱综合材料株式会社 | Cutting tool capable of changing knife head and knife head capable of installing on said cutting tool |
| CN101879688A (en) * | 2010-07-28 | 2010-11-10 | 齐齐哈尔二机床(集团)有限责任公司 | Balancing motion shock-absorbing device for heavy punch |
| JP2011045967A (en) * | 2009-08-27 | 2011-03-10 | Nt Tool Corp | Tool holder |
| KR101332467B1 (en) | 2012-07-04 | 2013-11-25 | 한국야금 주식회사 | Anti-vibration structure of cutting tool |
| KR101442488B1 (en) | 2014-05-26 | 2014-11-04 | 주식회사 신영기업 | Fastening bolt equipment for a linear of manhole |
| CN105014135A (en) * | 2014-04-22 | 2015-11-04 | 庄增信 | Milling machine cutter bar device with cutter clamping part capable of being rapidly replaced |
| WO2015166667A1 (en) * | 2014-04-28 | 2015-11-05 | コマツＮｔｃ株式会社 | Tool-holding device for crankshaft miller |
| US20150375305A1 (en) * | 2014-06-30 | 2015-12-31 | Kennametal Inc. | Optimized Vibration Absorber |
| CN108907779A (en) * | 2018-09-25 | 2018-11-30 | 洛阳理工学院 | A kind of transitioning component and its application method for old-fashioned boring machine |
| KR20190045721A (en) * | 2017-10-24 | 2019-05-03 | 한국생산기술연구원 | Rotary Cutting Tool Having Weight Member |
| CN110355410A (en) * | 2019-06-19 | 2019-10-22 | 哈尔滨理工大学 | A kind of plug in milling arbor of impact type vibration damping |
| CN110548883A (en) * | 2019-04-10 | 2019-12-10 | 成都成林数控刀具有限公司 | Split type handle of a knife |
| US11090737B2 (en) * | 2019-08-29 | 2021-08-17 | Kennametal Inc. | Rotary cutting tool with tunable vibration absorber assembly for suppressing torsional vibration |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106239246B (en) * | 2016-08-13 | 2018-09-25 | 哈尔滨理工大学 | Adjustable damping and the electric current of rigidity become that handle of a knife is quivered in vibration damping suppression and vibration damping suppression is quivered method |
-
1999
- 1999-04-26 JP JP11833499A patent/JP4190652B2/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298474C (en) * | 2002-03-04 | 2007-02-07 | 三菱综合材料株式会社 | Cutting tool capable of changing knife head and knife head capable of installing on said cutting tool |
| JP2011045967A (en) * | 2009-08-27 | 2011-03-10 | Nt Tool Corp | Tool holder |
| CN101879688A (en) * | 2010-07-28 | 2010-11-10 | 齐齐哈尔二机床(集团)有限责任公司 | Balancing motion shock-absorbing device for heavy punch |
| KR101332467B1 (en) | 2012-07-04 | 2013-11-25 | 한국야금 주식회사 | Anti-vibration structure of cutting tool |
| CN105014135A (en) * | 2014-04-22 | 2015-11-04 | 庄增信 | Milling machine cutter bar device with cutter clamping part capable of being rapidly replaced |
| DE112015002020B4 (en) * | 2014-04-28 | 2021-03-18 | Komatsu Ntc Ltd. | Tool holder for crankshaft milling machine |
| WO2015166667A1 (en) * | 2014-04-28 | 2015-11-05 | コマツＮｔｃ株式会社 | Tool-holding device for crankshaft miller |
| JP2015208816A (en) * | 2014-04-28 | 2015-11-24 | 株式会社小松製作所 | Tool holding device of crankshaft mirror |
| KR101442488B1 (en) | 2014-05-26 | 2014-11-04 | 주식회사 신영기업 | Fastening bolt equipment for a linear of manhole |
| US9533357B2 (en) * | 2014-06-30 | 2017-01-03 | Kennametal Inc | Optimized vibration absorber |
| US20150375305A1 (en) * | 2014-06-30 | 2015-12-31 | Kennametal Inc. | Optimized Vibration Absorber |
| KR20190045721A (en) * | 2017-10-24 | 2019-05-03 | 한국생산기술연구원 | Rotary Cutting Tool Having Weight Member |
| KR101998163B1 (en) | 2017-10-24 | 2019-07-10 | 한국생산기술연구원 | Rotary Cutting Tool Having Weight Member |
| CN108907779A (en) * | 2018-09-25 | 2018-11-30 | 洛阳理工学院 | A kind of transitioning component and its application method for old-fashioned boring machine |
| CN108907779B (en) * | 2018-09-25 | 2024-02-13 | 江阴天澄机械装备有限公司 | Transition assembly for old boring machine and use method of transition assembly |
| CN110548883A (en) * | 2019-04-10 | 2019-12-10 | 成都成林数控刀具有限公司 | Split type handle of a knife |
| CN110548883B (en) * | 2019-04-10 | 2024-04-02 | 成都成林数控刀具股份有限公司 | Split type handle of a knife |
| CN110355410A (en) * | 2019-06-19 | 2019-10-22 | 哈尔滨理工大学 | A kind of plug in milling arbor of impact type vibration damping |
| US11090737B2 (en) * | 2019-08-29 | 2021-08-17 | Kennametal Inc. | Rotary cutting tool with tunable vibration absorber assembly for suppressing torsional vibration |
| US11691205B2 (en) | 2019-08-29 | 2023-07-04 | Kennametal Inc. | Rotary cutting tool with tunable vibration absorber assembly for suppressing torsional vibration |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4190652B2 (en) | 2008-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101312037B1 (en) | Chattering vibration inhibiting mechanism of machine tool | |
| JP4190652B2 (en) | Tool holder structure and tool holding device | |
| US7131797B2 (en) | Tool holder | |
| CN107336062B (en) | Machine tool with active damping system | |
| EP0958081B1 (en) | Noise elminating adaptor for a cutting tool | |
| JP6145915B2 (en) | Chattering prevention structure of work machine and chattering prevention method thereby | |
| JP4665800B2 (en) | Chatter prevention device for work machines | |
| JPS58181507A (en) | Perforating tool | |
| US4447181A (en) | Tool holder | |
| JP6441403B2 (en) | Cutting tool holding mechanism, cutting tool holder and machine tool system | |
| JP3662771B2 (en) | Tool holder structure and tool holding device | |
| KR200449753Y1 (en) | Modular type double face shrink fit chuck having guiding surface | |
| JP2002113603A (en) | Vibration controlled cutting tool | |
| WO2021210522A1 (en) | Machine tool | |
| KR102217335B1 (en) | shot drill connection structure of gundrill device | |
| KR20100054921A (en) | Boring spindle head connecting unit of machine tool | |
| CN219986255U (en) | Anti-jump and anti-vibration combined cutter for machining large-diameter semicircular hole | |
| JPH05337769A (en) | Structure of mounting part for tool on machine tool spindle | |
| JPH10128635A (en) | Vibration control tool holder | |
| JP5728824B2 (en) | Tool chatter prevention device | |
| CN217316922U (en) | Safety clamping device of ultra-precise numerical control milling machine | |
| JP6967686B1 (en) | Machine tools and how to operate machine tools | |
| JP7294202B2 (en) | Machine Tools | |
| JP7349824B2 (en) | Machine tool operation panel support structure | |
| JP6745868B2 (en) | Tool holder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20051205 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080911 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20080916 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20080917 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110926 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110926 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120926 Year of fee payment: 4 |