JP2001246509A - Chuck device - Google Patents
Chuck deviceInfo
- Publication number
- JP2001246509A JP2001246509A JP2000053571A JP2000053571A JP2001246509A JP 2001246509 A JP2001246509 A JP 2001246509A JP 2000053571 A JP2000053571 A JP 2000053571A JP 2000053571 A JP2000053571 A JP 2000053571A JP 2001246509 A JP2001246509 A JP 2001246509A
- Authority
- JP
- Japan
- Prior art keywords
- workpiece
- axis
- chuck body
- peripheral surface
- chuck
- 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.)
- Pending
Links
Landscapes
- Auxiliary Devices For Machine Tools (AREA)
- Gripping On Spindles (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は例えばセラミック製
の小径薄肉円筒状の被加工物の内穴の内周面を超精密み
がき仕上加工する際に用いられるチャック装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chuck device used for ultra-precision polishing and finishing of the inner peripheral surface of an inner hole of a small-diameter thin-walled cylindrical workpiece made of ceramic, for example.
【０００２】[0002]
【従来の技術】従来この種の超精密みがき仕上加工装置
として、外周面にＣＢＮの微粉を電着してなるリーマ等
の加工工具を加工機のスピンドルに装着し、この加工機
のベッド上の工具対向位置に被加工物を装着可能なチャ
ック装置を固定配置し、このチャック装置に自動的又は
人為的に被加工物を給送し、加工工具を回転させながら
被加工物の内穴の軸線方向に送り運動させると共に加工
工具を軸線方向に振動させて被加工物の内周面をみがき
仕上加工する構造のものが知られている。2. Description of the Related Art Conventionally, as a super-precision polishing machine of this type, a machining tool such as a reamer formed by electrodepositing fine powder of CBN on an outer peripheral surface is mounted on a spindle of a machining machine, and is mounted on a bed of the machining machine. A chuck device capable of mounting the workpiece is fixedly arranged at the tool facing position, and the workpiece is automatically or artificially fed to the chuck device, and the axis of the inner hole of the workpiece is rotated while rotating the processing tool. There is known a structure in which a workpiece is moved in a feed direction and a working tool is vibrated in an axial direction to polish an inner peripheral surface of a workpiece to finish work.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記従来
構造の場合、仕上加工に際し、被加工物の外周面と内周
面との同心度のばらつきが避けられない被加工物であっ
たり、スピンドルと加工工具のチャックとの把持精度等
に起因して加工工具の軸線と被加工物の軸線との間の芯
ずれが避けられない加工条件においては、仕上加工精度
の低下を余儀なくされ、又、被加工物はチャック体の硬
質な内周面で把持されているため、チャック体の硬質な
内周面と被加工物との摩擦が小さいことにより被加工物
がチャック体の硬質の内周面を滑るおそれがあり、それ
だけ把持の不安定が生じ、ひいては把持強度の低下を招
いて、仕上加工精度の低下及び仕上表面粗さを低下させ
ることがあり、小径薄肉円筒状の被加工物にあっては薄
肉部分を変形させて仕上加工精度を低下させることがあ
るという不都合を有している。However, in the case of the above-mentioned conventional structure, in the case of the finishing work, the concentricity between the outer circumferential surface and the inner circumferential surface of the work cannot be avoided. Under machining conditions in which misalignment between the axis of the processing tool and the axis of the workpiece is inevitable due to the gripping accuracy of the tool with the chuck, etc., the finishing precision must be reduced, and Since the object is gripped by the hard inner peripheral surface of the chuck body, the workpiece slides on the hard inner peripheral surface of the chuck body due to a small friction between the hard inner peripheral surface of the chuck body and the workpiece. There is a possibility that gripping instability occurs, which leads to a decrease in gripping strength, which may cause a decrease in finish processing accuracy and a decrease in finish surface roughness.In the case of a small-diameter thin-walled cylindrical workpiece, Deform the thin part It has the disadvantage that it is possible to reduce the finishing accuracy.
【０００４】[0004]
【課題を解決するための手段】本発明はこのような課題
を解決することを目的とするもので、本発明のうちで、
請求項１記載の発明にあっては、円筒状の被加工物の外
周面を把持釈放可能なチャック体からなり、上記チャッ
ク体に被加工物の外周面を弾性把持可能な円筒状の緩衝
部材を配設してなることを特徴とするチャック装置にあ
る。The object of the present invention is to solve such a problem.
According to the first aspect of the present invention, a cylindrical buffer member is formed of a chuck body capable of gripping and releasing the outer peripheral surface of a cylindrical workpiece, and the chuck body elastically gripping the outer peripheral surface of the workpiece. The chuck device is characterized in that the chuck device is disposed.
【０００５】又、請求項２記載の発明は、上記チャック
体内に上記被加工物の背部から潤滑液を給送可能な給液
機構を配設してなることを特徴とするものであり、又、
請求項３記載の発明は、上記チャック体の該被加工物の
軸線方向に対して直交する全ての面方向への変位を許容
する軸線変位許容機構を備えてなることを特徴とするも
のであり、又、請求項４記載の発明は、上記チャック体
の被加工物の軸線方向への傾動を許容する軸線傾動許容
機構を備えてなることを特徴とするものであり、又、請
求項５記載の発明は、上記軸線変位許容機構及び軸線傾
動許容機構は、上記被加工物の軸線方向に対して直交す
るＸ軸線方向に変位可能及び該Ｘ軸線回りに傾動可能な
第一の保持部材と、該被加工物の軸線方向に対して直交
すると共に該Ｘ軸線方向に対して直交するＹ軸線方向に
変位可能及び該Ｙ軸線回りに傾動可能な第二の保持部材
とからなることを特徴とするものである。According to a second aspect of the present invention, a liquid supply mechanism capable of supplying a lubricating liquid from the back of the workpiece is provided in the chuck body. ,
The invention according to claim 3 is characterized in that the chuck body is provided with an axial displacement allowing mechanism that allows displacement in all surface directions orthogonal to the axial direction of the workpiece. According to a fourth aspect of the present invention, there is provided an axial tilt permitting mechanism for permitting the chuck body to tilt the workpiece in the axial direction. The invention is characterized in that the axis displacement permissible mechanism and the axis tilt permissible mechanism are a first holding member capable of being displaced in an X-axis direction orthogonal to the axial direction of the workpiece and being tiltable around the X-axis, A second holding member that is displaceable in a Y-axis direction that is orthogonal to the axial direction of the workpiece and that is orthogonal to the X-axis direction and that is tiltable about the Y-axis. Things.
【０００６】[0006]
【発明の実施の形態】図１乃至図１２は本発明をセラミ
ック製の外径３．２ｍｍ、内径２．５ｍｍ、長さ１１ｍ
ｍ程度の小径薄肉の円筒状の被加工物Ｗの内穴Ｗ1の内
周面を、図示省略の加工機に配備された回転及び送り並
びに振動するスピンドルに装着された、外周面にＣＢＮ
の微粉を電着してなる加工工具Ｋにより超精密みがき仕
上加工する装置に適用したものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 12 show the present invention in which a ceramic outer diameter of 3.2 mm, an inner diameter of 2.5 mm and a length of 11 m are used.
The inner peripheral surface of the inner hole W 1 of the cylindrical workpiece W of the small-diameter thin about m, mounted in rotation and feed deployed in an unillustrated machine and spindle vibrates, CBN on the outer peripheral surface
The present invention is applied to an apparatus for performing ultra-precision polishing and finishing using a processing tool K formed by electrodepositing fine powder.
【０００７】１は取付部材であって、上記加工機のベッ
ドＭ上に取付固定されている。Reference numeral 1 denotes a mounting member, which is mounted and fixed on a bed M of the processing machine.
【０００８】２は軸線変位許容機構、３は軸線傾動許容
機構であって、この場合、取付部材１に対向一対の軸受
台４・４を立設し、軸受台４・４に軸受５・５によりＸ
軸６・６を被加工物Ｗの軸線Ｌ方向に対して直交するＸ
軸線方向に変位及びＸ軸線回りＲ1に傾動可能に軸受
し、このＸ軸６・６間に円環状の第一の保持部材７を固
定すると共にＸ軸６・６の端部にＸ軸６・６の変位限度
を規制するカラー６ａ・６ａを固定し、この第一の保持
部材７に被加工物Ｗの軸線Ｌ方向に対して直交すると共
にＸ軸線方向に対して直交するＹ軸線方向に変位可能及
びＹ軸線回りＲ2に傾動可能にＹ軸８・８を軸受７ａ・
７ａにより軸受すると共にＹ軸８・８の端部にＹ軸８・
８の変位限度を規制するカラー８ａ・８ａを固定し、Ｙ
軸８・８間に円筒状の第二の保持部材９を固定し、これ
により、第一の保持部材７を上記被加工物Ｗの軸線Ｌ方
向に対して直交するＸ軸線方向に変位可能及びこのＸ軸
線回りＲ1に傾動可能に設けると共に第二の保持部材９
を被加工物Ｗの軸線Ｌ方向に対して直交すると共にＸ軸
線方向に対して直交するＹ軸線方向に変位可能及びこの
Ｙ軸線回りＲ2に傾動可能に設けて構成している。Reference numeral 2 denotes an axial displacement allowing mechanism, and 3 denotes an axial tilt allowing mechanism. In this case, a pair of opposed bearing stands 4 and 4 are erected on the mounting member 1, and bearings 5 and 5 are mounted on the bearing stands 4 and 4. By X
The axis 6.6 is defined by X perpendicular to the direction of the axis L of the workpiece W.
The bearing is provided so as to be displaceable in the axial direction and tiltable about the X-axis R 1, and a first annular holding member 7 is fixed between the X-axes 6. The collars 6a for restricting the displacement limit of 6 are fixed, and the first holding member 7 is fixed to the first holding member 7 in the Y-axis direction orthogonal to the axis L direction of the workpiece W and the X-axis direction. displaceable and Y tiltably axis line R 2 Y-axis 8-8 bearings 7a,
7a and the end of the Y-axis 8.8
8 to fix the displacement limit of the collar 8a
A cylindrical second holding member 9 is fixed between the shafts 8, whereby the first holding member 7 can be displaced in the X-axis direction orthogonal to the axis L direction of the workpiece W. The second holding member 9 is provided so as to be tiltable around the X axis line R 1.
The constitutes provided tiltably displaceable and the Y axis line R 2 in the Y-axis direction orthogonal to the X-axis direction as well as perpendicular to the axis L direction of the workpiece W.
【０００９】１０はチャック体であって、この場合、コ
レットチャック構造からなり、チャック体１０には四個
の割溝１０ａが形成されていると共に先端部外周面に先
広がりのテーパー外周面１０ｂが形成され、基部の外周
面に雄ねじ部１０ｃが形成され、上記第二の保持部材９
は上部の収納凹部９ａ及び中程部の筒状部９ｂ並びに底
部の底面部９ｃにより筒状に形成され、チャック体１０
の雄ねじ部１０ｃを底面部９ｃの雌ねじ部９ｄに螺着す
ると共に締付ナット９ｅを雄ねじ部１０ｃに螺着して底
面部９ｃに圧接することによりチャック体１０を底面部
９ｃに縦設し、筒状部９ｂ内にスリーブ筒１１をガイド
溝１１ａ及び回り止めピン１１ｂにより回止状態で上下
摺動自在に嵌挿し、スリーブ筒１１の先端部内周面に先
広がりのテーパー内周面１１ｃを形成し、スリーブ筒１
１の中程部にバネ受け部１１ｄを形成し、前記雄ねじ部
１０ｃにバネ受けナット１１ｅを螺着し、バネ受け部１
１ｄとバネ受けナット１１ｅとの間に縮径用バネ１１ｆ
を架設し、前記収納凹部９ａにダストシール１２を配置
し、スリーブ筒１１に嵌合穴１１ｇを形成し、この嵌合
穴１１ｇに嵌合してスリーブ筒１１を縮径用バネ１１ｆ
に抗して押下動作させる解除部材１３を設け、第二の保
持部材９の外周面にバネ受けナット１１ｅを回動する工
具を挿入するための窓穴９ｆを形成し、しかして図示省
略の解除機構により解除部材１３を押下解除動作させる
ことによりスリーブ筒１１を下降摺動させ、テーパー外
周面１０ｂとテーパー内周面１１ｃとの圧接を解除して
チャック体１０を自己弾性により拡径動作させると共に
解除部材１３をスリーブ筒１１から離反させ、スリーブ
筒１１を縮径用バネ１１ｆにより上昇摺動させ、テーパ
ー外周面１０ｂとテーパー内周面１１ｃとの圧接により
チャック体１０を縮径動作させるように構成している。Reference numeral 10 denotes a chuck body. In this case, the chuck body 10 has a collet chuck structure. The chuck body 10 has four split grooves 10a and a tapered outer peripheral surface 10b which expands forward on the outer peripheral surface of the tip. The external thread 10c is formed on the outer peripheral surface of the base, and the second holding member 9 is formed.
Is formed into a tubular shape by an upper housing recess 9a, a middle tubular portion 9b, and a bottom bottom portion 9c.
The screw body 10c is screwed into the female screw part 9d of the bottom part 9c, and the fastening nut 9e is screwed into the male screw part 10c and pressed against the bottom part 9c, thereby vertically mounting the chuck body 10 on the bottom part 9c. The sleeve tube 11 is vertically slidably fitted in the cylindrical portion 9b by the guide groove 11a and the detent pin 11b in a detented state to form a tapered inner peripheral surface 11c with a tapered end on the inner peripheral surface of the distal end portion of the sleeve tube 11. And sleeve tube 1
1, a spring receiving portion 11d is formed in the middle part, and a spring receiving nut 11e is screwed onto the male screw portion 10c.
Spring for reducing diameter 11f between 1d and spring receiving nut 11e
, A dust seal 12 is arranged in the storage recess 9a, a fitting hole 11g is formed in the sleeve cylinder 11, and the sleeve cylinder 11 is fitted in the fitting hole 11g to reduce the diameter of the sleeve cylinder 11f.
A release member 13 for performing a pressing operation is provided on the outer peripheral surface of the second holding member 9, and a window hole 9f for inserting a tool for rotating the spring receiving nut 11e is formed. The release member 13 is depressed and released by the mechanism, whereby the sleeve cylinder 11 is slid downward, the pressure contact between the tapered outer peripheral surface 10b and the tapered inner peripheral surface 11c is released, and the diameter of the chuck body 10 is expanded by self-elasticity. The release member 13 is separated from the sleeve cylinder 11, the sleeve cylinder 11 is slid up by the diameter reducing spring 11f, and the chuck body 10 is reduced in diameter by pressure contact between the tapered outer peripheral surface 10b and the tapered inner peripheral surface 11c. Make up.
【００１０】１４はストッパー体であって、上記第二の
保持部材９の基部外周面に取付固定され、ストッパー体
１４の底面１４ａと取付部材１の上面との間に第二の保
持部材９の傾斜角度を許容規制する間隙Ｔを形成し、し
かして、第二の保持部材９が過大に傾動しようとする
と、ストッパー体１４の底面１４ａが取付部材１の上面
に当接して傾動を阻止するように構成している。Reference numeral 14 denotes a stopper body, which is mounted and fixed on the outer peripheral surface of the base of the second holding member 9, and is provided between the bottom surface 14 a of the stopper body 14 and the upper surface of the mounting member 1. When a gap T for permitting and restricting the tilt angle is formed, and the second holding member 9 tries to tilt excessively, the bottom surface 14a of the stopper body 14 comes into contact with the upper surface of the mounting member 1 to prevent the tilting. It is composed.
【００１１】１５は緩衝部材であって、この場合、ウレ
タンゴムや弾性を有する合成樹脂製の円筒状に形成さ
れ、上記チャック体１０の先端部にチャック体１０の四
個の割溝１０ａと同幅の間隙を存して四個の把持部材１
６を取付け、この四個の把持部材１６の内周面を弧状面
１６ａに形成し、この弧状面１６ａにより囲まれた位置
に緩衝部材１５を挿入配置し、把持部材１６に緩衝部材
１５の抜止め用の押さえ片１６ｂを取付け、緩衝部材１
５の内周面を被加工物Ｗの把持面１５ａに形成し、しか
して、チャック体１０の縮径動作により被加工物Ｗの外
周面を緩衝部材１５を介して弾性把持すると共にチャッ
ク体１０の拡径動作により被加工物Ｗの外周面を釈放す
るように構成している。Reference numeral 15 denotes a cushioning member. In this case, a cylindrical member made of urethane rubber or elastic synthetic resin is formed at the tip of the chuck body 10 and has the same shape as the four split grooves 10a of the chuck body 10. Four gripping members 1 with a width gap
6, the inner peripheral surfaces of the four gripping members 16 are formed in an arcuate surface 16a, and the buffer member 15 is inserted and arranged at a position surrounded by the arcuate surface 16a. Attach the retaining piece 16b for stopping, and attach the cushioning member 1
5 is formed on the gripping surface 15a of the workpiece W, and the outer diameter of the workpiece W is elastically gripped via the buffer member 15 by the diameter reduction operation of the chuck body 10, and the chuck body 10 Is configured to release the outer peripheral surface of the workpiece W by the diameter expanding operation.
【００１２】１７は給液機構であって、この場合、上記
取付部材１に上記緩衝部材１５の背部に近接して給液管
１８を立設すると共に図示省略の潤滑油源に接続された
接続口１９を形成し、給液管１８を介して上記被加工物
Ｗの背部から潤滑液Ｆを噴射給送するように構成してい
る。Numeral 17 denotes a liquid supply mechanism. In this case, a liquid supply pipe 18 is provided upright on the mounting member 1 near the back of the buffer member 15, and a connection is made to a lubricating oil source (not shown). An opening 19 is formed, and the lubricating liquid F is injected and fed from the back of the workpiece W through the liquid supply pipe 18.
【００１３】この実施の形態例は上記構成であるから、
図５、９の如く、チャック体１０に自動的又は人為的に
被加工物Ｗを給送し、被加工物Ｗをチャック体１０によ
り把持し、例えば、外周面にＣＢＮの微粉を電着してな
るリーマ等の加工工具Ｋを工具軸線Ｄの回りＱに回転さ
せながら被加工物Ｗの内穴Ｗ1の軸線方向Ｌに送り運動
Ｐさせると共に加工工具Ｋを工具軸線Ｄ方向に振動Ｓさ
せて被加工物Ｗの内穴Ｗ1の内周面をみがき仕上加工す
ることになり、この際、上記チャック体１０に被加工物
Ｗの外周面を弾性把持可能な円筒状の緩衝部材１５を配
設してなるから、仕上加工に際し、被加工物Ｗの外周面
と内周面との同心度のばらつきが避けられない被加工物
であったり、加工工具のチャックとの把持精度等に起因
して加工工具Ｋの軸線Ｄと被加工物Ｗの軸線Ｌとの間の
芯ずれが避けられない加工条件においては、図１２の如
く、緩衝部材１５の弾性把持により芯ずれを吸収するこ
とができ、仕上加工精度及び仕上表面粗さを高めること
ができ、小径薄肉円筒状の被加工物にあっても薄肉部分
の変形を抑制することができて加工精度を向上すること
ができ、しかも、チャック体１０と被加工物との摩擦を
大きくすることができ、被加工物Ｗがチャック体１０の
内周面を滑ることを抑制することができ、それだけ把持
の不安定を回避することができ、ひいては把持強度の向
上により加工精度を向上することができる。Since this embodiment has the above configuration,
As shown in FIGS. 5 and 9, the workpiece W is automatically or artificially fed to the chuck body 10, the workpiece W is gripped by the chuck body 10, and fine powder of CBN is electrodeposited on the outer peripheral surface, for example. the machining tool K reamer such is vibrated S machining tool K to the tool axis D direction causes the movement P sends to the inner bore W 1 in the axial direction L of the workpiece W while rotating around Q of the tool axis D comprising Te Te will be the inner circumferential surface of the polishing finishing of the inner hole W 1 of the workpiece W, this time, the workpiece W cushioning member 15 an outer peripheral surface of the elastic grippable cylindrical in the chuck body 10 Because it is arranged, during the finishing process, the workpiece is inevitable in the concentricity between the outer peripheral surface and the inner peripheral surface of the workpiece W, or due to the gripping accuracy of the machining tool with the chuck. As a result, misalignment between the axis D of the processing tool K and the axis L of the workpiece W cannot be avoided. Under poor machining conditions, as shown in FIG. 12, the elastic misalignment of the cushioning member 15 can absorb the misalignment, improve the finishing accuracy and the finished surface roughness, and provide a small-diameter thin-walled cylindrical workpiece. Even if there is, the deformation of the thin portion can be suppressed, the processing accuracy can be improved, and the friction between the chuck body 10 and the workpiece can be increased. Can be suppressed from slipping on the inner peripheral surface of the slab, and the instability of the grip can be avoided accordingly, and the processing accuracy can be improved by improving the grip strength.
【００１４】又、この場合、チャック体１０内に被加工
物Ｗの背部から潤滑液Ｆを給送可能な給液機構１７を配
設しているから、被加工物Ｗの前方から潤滑液Ｆを給送
するだけの構造に比べて、被加工物Ｗに潤滑液を万偏な
く給送することができ、それだけ、被加工物Ｗの仕上加
工精度及び仕上表面粗さを高めることができる。In this case, since the liquid supply mechanism 17 capable of supplying the lubricating fluid F from the back of the workpiece W is disposed in the chuck body 10, the lubricating fluid F is supplied from the front of the workpiece W. The lubricating liquid can be evenly fed to the workpiece W as compared with a structure in which the workpiece W is only fed, so that the finishing accuracy and the finished surface roughness of the workpiece W can be increased accordingly.
【００１５】又、この場合、図１０の如く、チャック体
１０は軸線変位許容機構２により被加工物Ｗの軸線Ｌ方
向に対して直交する全ての面方向への変位が許容されて
いるので、スピンドルと加工工具Ｋのチャックとの把持
精度等に起因して加工工具Ｋの軸線Ｄと被加工物Ｗの軸
線Ｌとの間に芯ずれが生じた場合、チャック体１０は芯
ずれをなくすべく追従して変位し、このため被加工物Ｗ
の内穴Ｗ1の内周面と加工工具Ｋの外周面との片当たり
を防ぐことができ、それだけ、被加工物Ｗの内穴Ｗ1の
内周面の仕上表面粗さを高めることができると共に被加
工物Ｗの仕上加工精度を向上することができ、又、この
場合、上記チャック体１０の被加工物Ｗの軸線方向への
傾動を許容する軸線傾動許容機構３を備えているから、
図１１の如く、加工工具Ｋの振れ回転等に起因して加工
工具Ｋの軸線Ｄが軸線Ｄ方向に傾斜した場合、チャック
体１０は加工工具Ｋの工具軸線Ｄの傾斜に追従して傾動
し、このため被加工物Ｗの内穴Ｗ1の内周面と加工工具
Ｋの外周面との片当たりを防ぐことができ、それだけ、
被加工物Ｗの内穴Ｗ1の内周面の仕上表面粗さを高める
ことができると共に被加工物Ｗの仕上加工精度を向上す
ることができ、又、この場合、上記軸線変位許容機構２
及び上記軸線傾動許容機構３は、上記被加工物Ｗの軸線
Ｌ方向に対して直交するＸ軸線方向に変位可能及びＸ軸
線回りＲ1に傾動可能な第一の保持部材７と、被加工物
Ｗの軸線Ｌ方向に対して直交すると共にＸ軸線方向に対
して直交するＹ軸線方向に変位可能及び該Ｙ軸線回りＲ
2に傾動可能な第二の保持部材９とからなるので、チャ
ック体１０を第一の保持部材７の被加工物Ｗの軸線Ｌ方
向に対して直交するＸ軸線方向の変位及び第二の保持部
材９の被加工物Ｗの軸線Ｌ方向に対して直交すると共に
Ｘ軸線方向に対して直交するＹ軸線方向の変位により被
加工物Ｗの軸線Ｌ方向に対して直交する全ての面方向へ
の変位を許容することができると共にチャック体１０を
第一の保持部材７の被加工物Ｗの軸線Ｌ方向に対して直
交するＸ軸線回りＲ1の傾動並びに第二の保持部材９の
被加工物Ｗの軸線Ｌ方向に対して直交すると共にＸ軸線
方向に対して直交するＹ軸線回りＲ2の傾動により加工
工具Ｋの工具軸線Ｄの傾斜に追従して傾動することがで
き、それだけ軸線変位許容機構２及び軸線傾動許容機構
３の構造を簡素化することができる。In this case, as shown in FIG. 10, since the chuck body 10 is allowed to be displaced in all the plane directions orthogonal to the direction of the axis L of the workpiece W by the axis displacement allowing mechanism 2, If there is a misalignment between the axis D of the machining tool K and the axis L of the workpiece W due to the gripping accuracy between the spindle and the chuck of the machining tool K, the chuck body 10 is designed to eliminate the misalignment. Following the displacement, the workpiece W
The partial contact with the outer peripheral surface of the inner peripheral surface of the inner hole W 1 and the processing tool K can be prevented, and it only is possible to increase the inner peripheral surface of the finish surface roughness of the inner bore W 1 of the workpiece W In addition to the above, since the finishing accuracy of the workpiece W can be improved, and in this case, the chuck body 10 is provided with the axis tilting permitting mechanism 3 that allows the workpiece W to tilt in the axial direction. ,
As shown in FIG. 11, when the axis D of the processing tool K is tilted in the direction of the axis D due to the run-out rotation of the processing tool K, the chuck body 10 tilts following the tilt of the tool axis D of the processing tool K. for this reason it is possible to prevent uneven contact between the outer peripheral surface of the inner peripheral surface and the machining tool K of the inner bore W 1 of the workpiece W, by itself,
It is possible to improve the finishing precision of the workpiece W can be enhanced to the inner peripheral surface of the finish surface roughness of the inner bore W 1 of the workpiece W, also in this case, the axis displacement permitting mechanism 2
And a first holding member 7 that is displaceable in the X-axis direction orthogonal to the direction of the axis L of the workpiece W and that can be tilted around the X-axis R 1 , Displaceable in the Y-axis direction orthogonal to the axis L direction of W and orthogonal to the X-axis direction, and R around the Y-axis
2 , the chuck body 10 is displaced in the X-axis direction orthogonal to the direction of the axis L of the workpiece W of the first holding member 7 and the second holding is performed. The displacement of the member 9 in the direction of the axis L of the workpiece W perpendicular to the direction of the axis L and in the direction of the Y axis perpendicular to the direction of the X axis causes all surface directions orthogonal to the direction of the axis L of the workpiece W to move. Displacement can be tolerated, and the chuck body 10 is tilted about the X-axis R 1 orthogonal to the axis L direction of the workpiece W of the first holding member 7 and the workpiece of the second holding member 9 is tilted. W to follow the tilt of the Y axis line R 2 perpendicular to the X axis direction to the inclination of the tool axis D of the machining tool K with orthogonal to the axis L direction it is possible to tilt the allowable much axial displacement Simplify the structure of the mechanism 2 and the axis tilting allowance mechanism 3 It is possible.
【００１６】尚、本発明は上記実施の形態例に限られる
ものではなく、軸線変位許容機構２、軸線傾動許容機構
３、チャック体１０、緩衝部材１５、給液機構１７等の
構造や形態並びに材質等は適宜変更して設計されるもの
である。It should be noted that the present invention is not limited to the above-described embodiment, and the structures and forms of the axis displacement allowing mechanism 2, the axis tilting allowing mechanism 3, the chuck body 10, the buffer member 15, the liquid supply mechanism 17, and the like. The material and the like are appropriately changed and designed.
【００１７】[0017]
【発明の効果】本発明は上述の如く、請求項１記載の発
明にあっては、チャック体に被加工物を給送し、被加工
物をチャック体により把持し、被加工物の内穴の内周面
を加工するに際し、上記チャック体に被加工物の外周面
を弾性把持可能な円筒状の緩衝部材を配設してなるか
ら、被加工物の外周面と内周面との同心度のばらつきが
避けられない被加工物であったり、加工工具のチャック
との把持精度等に起因して加工工具の軸線と被加工物の
軸線との間の芯ずれが避けられない加工条件において
は、緩衝部材の弾性把持により芯ずれを吸収することが
でき、仕上加工精度及び仕上表面粗さを高めることがで
き、しかも、チャック体と被加工物との摩擦を大きくす
ることができ、被加工物がチャック体の内周面を滑るこ
とを抑制することができ、それだけ把持の不安定を回避
することができ、ひいては把持強度の向上により加工精
度を向上することができる。As described above, according to the first aspect of the present invention, the workpiece is fed to the chuck body, the workpiece is gripped by the chuck body, and the inner hole of the workpiece is formed. When the inner peripheral surface of the workpiece is machined, the chuck body is provided with a cylindrical buffer member capable of elastically holding the outer peripheral surface of the workpiece, so that the outer peripheral surface and the inner peripheral surface of the workpiece are concentric. In the processing condition where the variation of the degree is inevitable, or the misalignment between the axis of the processing tool and the axis of the workpiece due to the gripping accuracy of the processing tool with the chuck etc. Can absorb the misalignment by the elastic gripping of the cushioning member, can improve the finishing accuracy and the finished surface roughness, and can increase the friction between the chuck body and the workpiece. Workpieces can be prevented from sliding on the inner peripheral surface of the chuck body. , It can be avoided much instability gripping, it is possible to improve the machining accuracy by improving the thus gripping strength.
【００１８】又、請求項２記載の発明にあっては、チャ
ック体内に被加工物の背部から潤滑液を給送可能な給液
機構を配設しているから、被加工物の前方から潤滑液を
給送するだけの構造に比べて、被加工物に潤滑液を万偏
なく給送することができ、それだけ、被加工物の仕上加
工精度及び仕上表面粗さを高めることができる。According to the second aspect of the present invention, since the chuck body is provided with a liquid supply mechanism capable of supplying a lubricating liquid from the back of the workpiece, lubrication is performed from the front of the workpiece. Lubricating liquid can be evenly fed to the workpiece as compared to a structure that only feeds the liquid, and the finishing accuracy and the finished surface roughness of the workpiece can be increased accordingly.
【００１９】又、請求項３記載の発明にあっては、チャ
ック体は軸線変位許容機構により被加工物の軸線方向に
対して直交する全ての面方向への変位が許容されている
ので、スピンドルと加工工具のチャックとの把持精度等
に起因して加工工具の軸線と被加工物の軸線との間に芯
ずれが生じた場合、チャック体は芯ずれをなくすべく追
従して変位し、このため被加工物の内穴の内周面と加工
工具の外周面との片当たりを防ぐことができ、それだ
け、被加工物の内穴の内周面の仕上表面粗さを高めるこ
とができると共に被加工物の仕上加工精度を向上するこ
とができ、又、請求項４記載の発明にあっては、上記チ
ャック体の被加工物の軸線方向への傾動を許容する軸線
傾動許容機構を備えているから、加工工具の振れ回転等
に起因して加工工具の軸線が軸線方向に傾斜した場合、
チャック体は加工工具の工具軸線の傾斜に追従して傾動
し、このため被加工物の内穴の内周面と加工工具の外周
面との片当たりを防ぐことができ、それだけ、被加工物
の内穴の内周面の仕上表面粗さを高めることができると
共に被加工物の仕上加工精度を向上することができ、
又、請求項５記載の発明にあっては、上記軸線変位許容
機構及び上記軸線傾動許容機構は、上記被加工物の軸線
方向に対して直交するＸ軸線方向に変位可能及びＸ軸線
回りに傾動可能な第一の保持部材と、被加工物の軸線方
向に対して直交すると共にＸ軸線方向に対して直交する
Ｙ軸線方向に変位可能及び該Ｙ軸線回りに傾動可能な第
二の保持部材とからなるので、チャック体を第一の保持
部材の被加工物の軸線方向に対して直交するＸ軸線方向
の変位及び第二の保持部材の被加工物の軸線方向に対し
て直交すると共にＸ軸線方向に対して直交するＹ軸線方
向の変位により被加工物の軸線方向に対して直交する全
ての面方向への変位を許容することができると共にチャ
ック体を第一の保持部材の被加工物の軸線方向に対して
直交するＸ軸線回りの傾動並びに第二の保持部材の被加
工物の軸線方向に対して直交すると共にＸ軸線方向に対
して直交するＹ軸線回りの傾動により加工工具の工具軸
線の傾斜に追従して傾動することができ、それだけ軸線
変位許容機構及び軸線傾動許容機構の構造を簡素化する
ことができる。According to the third aspect of the present invention, since the chuck body is allowed to be displaced in all the plane directions orthogonal to the axial direction of the workpiece by the axial displacement permitting mechanism, When the misalignment occurs between the axis of the machining tool and the axis of the workpiece due to the gripping accuracy of the machining tool with the chuck, etc., the chuck body is displaced following to eliminate the misalignment. Therefore, it is possible to prevent the inner peripheral surface of the inner hole of the workpiece and the outer peripheral surface of the processing tool from coming into contact with each other, and accordingly, it is possible to increase the finish surface roughness of the inner peripheral surface of the inner hole of the workpiece. The finishing accuracy of the workpiece can be improved, and the invention according to claim 4 is provided with an axial tilt allowing mechanism for allowing the chuck body to tilt the workpiece in the axial direction. The machining tool If the axis is inclined in the axial direction,
The chuck body tilts following the inclination of the tool axis of the processing tool, thereby preventing the inner peripheral surface of the inner hole of the workpiece and the outer peripheral surface of the processing tool from coming into contact with each other. The finishing surface roughness of the inner peripheral surface of the inner hole can be increased, and the finishing accuracy of the workpiece can be improved.
Further, in the invention described in claim 5, the axis displacement permissible mechanism and the axis tilt permissible mechanism are displaceable in the X-axis direction orthogonal to the axis direction of the workpiece and tilted around the X-axis. A possible first holding member, and a second holding member that is displaceable in the Y-axis direction orthogonal to the axial direction of the work piece and orthogonal to the X-axis direction and tiltable around the Y-axis. Therefore, the chuck body is displaced in the X-axis direction orthogonal to the axial direction of the workpiece of the first holding member, and the X-axis is orthogonal to the axial direction of the workpiece of the second holding member. With the displacement in the Y-axis direction perpendicular to the direction, the displacement in all the plane directions perpendicular to the axial direction of the workpiece can be allowed, and the chuck body can be used as the workpiece of the first holding member. X-axis rotation perpendicular to the axis direction And the tilt of the second holding member following the tilt of the tool axis of the working tool by tilting about the Y axis orthogonal to the axis direction of the workpiece and orthogonal to the X axis direction. Accordingly, the structures of the axis displacement allowing mechanism and the axis tilt allowing mechanism can be simplified accordingly.
【００２０】以上、所期の目的を充分達成することがで
きる。As described above, the intended purpose can be sufficiently achieved.
【図１】本発明の実施の形態例の部分を切欠した全体斜
視図である。FIG. 1 is an overall perspective view in which a part of an embodiment of the present invention is cut away.
【図２】本発明の実施の形態例の部分を断面した全体平
面図である。FIG. 2 is an overall plan view showing a cross section of a part of the embodiment of the present invention.
【図３】本発明の実施の形態例の全体縦断面図である。FIG. 3 is an overall vertical sectional view of the embodiment of the present invention.
【図４】本発明の実施の形態例の全体縦断面図である。FIG. 4 is an overall longitudinal sectional view of an embodiment of the present invention.
【図５】本発明の実施の形態例の部分拡大縦断面図であ
る。FIG. 5 is a partially enlarged longitudinal sectional view of the embodiment of the present invention.
【図６】本発明の実施の形態例の全体側面図である。FIG. 6 is an overall side view of the embodiment of the present invention.
【図７】本発明の実施の形態例の部分分解斜視図であ
る。FIG. 7 is a partially exploded perspective view of the embodiment of the present invention.
【図８】本発明の実施の形態例の部分斜視図である。FIG. 8 is a partial perspective view of the embodiment of the present invention.
【図９】本発明の実施の形態例の部分斜視図である。FIG. 9 is a partial perspective view of the embodiment of the present invention.
【図１０】本発明の実施の形態例の動作説明平面図であ
る。FIG. 10 is an operation explanatory plan view of the embodiment of the present invention.
【図１１】本発明の実施の形態例の動作説明側面図であ
る。FIG. 11 is an operation explanatory side view of the embodiment of the present invention.
【図１２】本発明の実施の形態例の動作説明部分平断面
図である。FIG. 12 is a partial plan sectional view for explaining the operation of the embodiment of the present invention.
Ｗ 被加工物 Ｗ1 内穴 Ｌ 軸線 ２ 軸線変位許容機構 ３ 軸線傾動許容機構 ７ 第一の保持部材 ９ 第二の保持部材 １０ チャック体 １５ 緩衝部材 １９ 給液機構W Workpiece W 1 Inner hole L Axis 2 Axis displacement allowance mechanism 3 Axis tilt allowance mechanism 7 First holding member 9 Second holding member 10 Chuck body 15 Buffer member 19 Liquid supply mechanism
───────────────────────────────────────────────────── フロントページの続き (72)発明者 村沢 和夫 新潟県長岡市城岡１丁目２番１号 倉敷機 械株式会社内 Ｆターム(参考） 3C011 EE01 EE09 3C032 BB12 FF00 FF12 JJ01 JJ08 JJ15 NN08 3C034 AA05 BB71 CB11 DD20 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kazuo Murasawa 1-2-1, Shirooka, Nagaoka City, Niigata Prefecture F-term in Kurashiki Machinery Co., Ltd. (Reference) 3C011 EE01 EE09 3C032 BB12 FF00 FF12 JJ01 JJ08 JJ15 NN08 3C034 AA05 BB71 CB11 DD20
Claims (5)
能なチャック体からなり、上記チャック体に被加工物の
外周面を弾性把持可能な円筒状の緩衝部材を配設してな
ることを特徴とするチャック装置。1. A chuck body capable of gripping and releasing the outer peripheral surface of a cylindrical workpiece, wherein a cylindrical buffer member capable of elastically gripping the outer peripheral surface of the workpiece is disposed on the chuck body. A chuck device characterized by the above-mentioned.
から潤滑液を給送可能な給液機構を配設してなることを
特徴とする請求項１記載のチャック装置。2. The chuck device according to claim 1, wherein a liquid supply mechanism capable of supplying a lubricating liquid from the back of the workpiece is provided in the chuck body.
に対して直交する全ての面方向への変位を許容する軸線
変位許容機構を備えてなることを特徴とする請求項１又
は２記載のチャック装置。3. An axial displacement permitting mechanism for permitting displacement of the chuck body in all surface directions orthogonal to the axial direction of the workpiece. Chuck device.
の傾動を許容する軸線傾動許容機構を備えてなることを
特徴とする請求項１〜３のいずれか１項に記載のチャッ
ク装置。4. The chuck device according to claim 1, further comprising an axial tilt allowing mechanism that allows the workpiece to be axially tilted of the chuck body.
機構は、上記被加工物の軸線方向に対して直交するＸ軸
線方向に変位可能及び該Ｘ軸線回りに傾動可能な第一の
保持部材と、該被加工物の軸線方向に対して直交すると
共に該Ｘ軸線方向に対して直交するＹ軸線方向に変位可
能及び該Ｙ軸線回りに傾動可能な第二の保持部材とから
なることを特徴とする請求項４記載のチャック装置。5. A first holding member displaceable in an X-axis direction orthogonal to an axial direction of the workpiece and tiltable around the X-axis, wherein the axis displacement allowing mechanism and the axis tilting allowing mechanism are provided. A second holding member that is displaceable in a Y-axis direction that is orthogonal to the axial direction of the workpiece and that is orthogonal to the X-axis direction and is tiltable about the Y-axis. The chuck device according to claim 4, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000053571A JP2001246509A (en) | 2000-02-29 | 2000-02-29 | Chuck device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000053571A JP2001246509A (en) | 2000-02-29 | 2000-02-29 | Chuck device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001246509A true JP2001246509A (en) | 2001-09-11 |
Family
ID=18574937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000053571A Pending JP2001246509A (en) | 2000-02-29 | 2000-02-29 | Chuck device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001246509A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005279871A (en) * | 2004-03-30 | 2005-10-13 | Toyo Advanced Technologies Co Ltd | Seat surface machining device of valve body |
| KR101312295B1 (en) * | 2011-08-19 | 2013-09-27 | 주식회사 성우하이텍 | Angle adjusting device for grinding work |
| CN104802027A (en) * | 2015-05-04 | 2015-07-29 | 北京理工大学 | Dynamic protecting device for machine tool cutting force sensor |
| EP2822721A4 (en) * | 2012-03-09 | 2015-10-21 | Anca Pty Ltd | Adapter |
-
2000
- 2000-02-29 JP JP2000053571A patent/JP2001246509A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005279871A (en) * | 2004-03-30 | 2005-10-13 | Toyo Advanced Technologies Co Ltd | Seat surface machining device of valve body |
| KR101312295B1 (en) * | 2011-08-19 | 2013-09-27 | 주식회사 성우하이텍 | Angle adjusting device for grinding work |
| EP2822721A4 (en) * | 2012-03-09 | 2015-10-21 | Anca Pty Ltd | Adapter |
| US9586269B2 (en) | 2012-03-09 | 2017-03-07 | Anca Pty Ltd | Collet adapter |
| CN104802027A (en) * | 2015-05-04 | 2015-07-29 | 北京理工大学 | Dynamic protecting device for machine tool cutting force sensor |
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