JP2000079505A - End face machining method and chuck used for this method - Google Patents
End face machining method and chuck used for this methodInfo
- Publication number
- JP2000079505A JP2000079505A JP10368069A JP36806998A JP2000079505A JP 2000079505 A JP2000079505 A JP 2000079505A JP 10368069 A JP10368069 A JP 10368069A JP 36806998 A JP36806998 A JP 36806998A JP 2000079505 A JP2000079505 A JP 2000079505A
- Authority
- JP
- Japan
- Prior art keywords
- chuck
- radial direction
- pawl
- reference shape
- shape portion
- 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
- Gripping On Spindles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、工作機械におい
て、外周に孔、溝、突起等の基準形状部を備えたワーク
の端面を加工する方法、及びこの方法に用いるチャック
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for processing an end face of a work having a reference shape portion such as a hole, a groove, a projection, or the like in a machine tool, and a chuck used in the method.
【０００２】[0002]
【従来の技術】この種のワークとして、例えば、図１４
及び図１５に示すようなボールゲージＷが知られてい
る。このボールゲージＷは外周面及び内周面が球面の一
部を形成する筒状体であって、その周壁には基準形状部
としての略矩形の窓孔Ｈが等角度をおいて例えば６つ形
成されている。従来、ボールゲージＷの加工プロセス
は、図１６に示すように、筒状体の総旋削工程と、周壁
に窓孔Ｈを明ける窓パンチ工程と、窓孔Ｈの両側面をブ
ローチ仕上げする窓ブローチ工程と、筒状体の熱処理工
程と、端面の打痕及び熱処理歪を除去して次工程のため
の基準面を作成する端面研削工程と、筒状体の外周面を
球面状に仕上げる外球研削工程と、筒状体の内周面を球
面状に仕上げる内球研削工程と、窓孔Ｈの両側面を最終
的に研削仕上げする窓研削工程とから構成されていた。2. Description of the Related Art For example, FIG.
A ball gauge W as shown in FIG. 15 is known. The ball gauge W is a cylindrical body having an outer peripheral surface and an inner peripheral surface forming a part of a spherical surface. A substantially rectangular window hole H as a reference shape portion is formed on the peripheral wall at an equal angle, for example, by six. Is formed. Conventionally, the machining process of the ball gauge W is, as shown in FIG. 16, a total turning process of a cylindrical body, a window punching process of opening a window hole H in a peripheral wall, and a window broach for finishing both side surfaces of the window hole H. Process, a heat treatment process for the cylindrical body, an end surface grinding process for removing a dent and heat treatment distortion on the end surface to create a reference surface for the next process, and an outer sphere for finishing the outer peripheral surface of the cylindrical body into a spherical shape A grinding process, an inner sphere grinding process for finishing the inner peripheral surface of the cylindrical body into a spherical shape, and a window grinding process for finally grinding and finishing both side surfaces of the window hole H were included.
【０００３】[0003]
【発明が解決しようとする課題】ところで、ボールゲー
ジＷの加工にあたっては、基準形状部である窓孔Ｈを筒
状体の軸線方向中心位置に正確な寸法で形成する必要が
ある。そのために重要な寸法は、図１５に示す窓位置寸
法Ａと窓幅寸法Ｂである。窓幅寸法Ｂは、熱処理歪を考
慮してもブローチ仕上げで十分である。これに対し、窓
位置寸法Ａは、ブローチ工程での位置決め誤差に熱処理
歪が重なったＡ’寸法と端面研削後の全幅寸法Ｃとの差
（Ｃ−Ａ’）となり、誤差の積み上がりによって精度が
低下しやすい。ところが、従来の端面研削工程では、筒
状体を片側の端面を基準にしてチャックに取り付け、反
対側の端面を研削する方法を採用していたので、この工
程のみで窓位置寸法Ａを正確に出すことは困難であっ
た。このため、端面研削後の窓研削工程が不可欠で、こ
こで窓孔Ｈの両側面を再仕上げすることによって、窓位
置寸法Ａを調整し直す必要があった。また、窓研削には
特殊な研削盤を使用する必要があるため、イニシャルコ
ストが高くつくという問題点もあった。However, in processing the ball gauge W, it is necessary to form a window hole H, which is a reference shape portion, with an accurate dimension at the axial center of the cylindrical body. Important dimensions for that are the window position dimension A and the window width dimension B shown in FIG. For the window width dimension B, broach finishing is sufficient even in consideration of heat treatment distortion. On the other hand, the window position dimension A is the difference (CA ′) between the dimension A ′ where the heat treatment strain overlaps the positioning error in the broaching process and the overall width dimension C after the end face grinding. Tends to decrease. However, in the conventional end surface grinding process, a method of attaching the cylindrical body to the chuck with reference to one end surface and grinding the opposite end surface was adopted. It was difficult to get out. For this reason, the window grinding process after the end face grinding is indispensable, and here, it is necessary to adjust the window position dimension A again by refinishing both side surfaces of the window hole H. In addition, since a special grinding machine must be used for window grinding, there has been a problem that initial costs are high.
【０００４】そこで、本発明の課題は、基準形状部を基
準にワークの端面を旋削でき、その後の仕上工程を省略
して、基準形状部付きワークの加工プロセスを簡略化で
きる方法、及び、基準形状部を基準にしてワークを高精
度に位置決めでき、本発明の端面加工方法を首尾よく実
施できるチャックを提供することにある。Accordingly, an object of the present invention is to provide a method capable of turning an end face of a work with reference to a reference shape portion and simplifying a processing process of a work with a reference shape portion by omitting a finishing step thereafter. An object of the present invention is to provide a chuck capable of positioning a work with high accuracy based on a shape portion and capable of successfully executing the end face processing method of the present invention.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めに、本発明の端面加工方法は、外周に孔、溝、突起等
の基準形状部を備えたワークをチャックに取り付け、チ
ャックの爪を閉じ、基準形状部をチャック軸線方向から
把持して、ワークを位置決めしたのち、ワークの外周面
をチャック半径方向から把持し、この状態で、ワークの
端面を旋削することを特徴とする（請求項１）。In order to solve the above-mentioned problems, an end face machining method according to the present invention is characterized in that a work having a reference shape portion such as a hole, a groove, a projection or the like on an outer periphery is attached to a chuck, and a claw of the chuck is provided. Is closed, the reference shape portion is gripped from the chuck axis direction, and the work is positioned. Then, the outer peripheral surface of the work is gripped from the chuck radial direction, and in this state, the end face of the work is turned. Item 1).
【０００６】この場合、基準形状部の中心線を基準にし
てワークを位置決めするのが好ましい（請求項２）。ま
た、基準形状部の片側面を基準にしてワークを位置決め
してもよい（請求項３）。本発明の端面加工方法は、周
壁に基準形状部としての窓孔を備えたボールゲージ又は
これに類似する形状の筒状体からなるワークに好ましく
適用できる（請求項４）。ただし、本発明は筒状ワーク
に限定されず、充実体からなるワークに適用することも
可能で、基準形状部としては、窓孔のほか、凹孔、溝、
突起等を例示できる。In this case, it is preferable to position the workpiece with reference to the center line of the reference shape portion. Further, the work may be positioned with reference to one side surface of the reference shape portion. The end face processing method of the present invention can be preferably applied to a ball gauge provided with a window hole as a reference shape portion in a peripheral wall or a work made of a cylindrical body having a shape similar to the ball gauge (claim 4). However, the present invention is not limited to a cylindrical work, and can also be applied to a work made of a solid body. As the reference shape portion, in addition to a window hole, a concave hole, a groove,
Protrusions and the like can be exemplified.
【０００７】上記端面加工方法の実施にあたっては、外
周に孔、溝、突起等の基準形状部を備えたワークを把持
するチャックが用いられる。本発明のチャックは、チャ
ック本体に複数の親爪をチャック半径方向へ移動可能に
組み付け、各親爪に上爪をチャック半径方向へ相対移動
可能に支持し、上爪にワークの外周面を把持する把持部
を設けるとともに、基準形状部をチャック軸線方向から
把持してワークを位置決めする位置決め部材を支持し、
親爪を駆動する機構と、親爪と上爪との相対移動により
位置決め部材を操作する操作部材とを設けて構成される
（請求項５）。In carrying out the end face processing method, a chuck for gripping a workpiece having a reference shape portion such as a hole, a groove, a projection, etc. on the outer periphery is used. In the chuck of the present invention, a plurality of main claws are assembled to the chuck main body so as to be movable in the chuck radial direction, the upper jaw is supported on each main jaw so as to be relatively movable in the chuck radial direction, and the outer jaw grips the outer peripheral surface of the work. In addition to providing a gripping part to support the positioning member for positioning the workpiece by gripping the reference shape part from the chuck axial direction,
A mechanism for driving the parent nail and an operation member for operating the positioning member by relative movement between the parent nail and the upper nail are provided (claim 5).
【０００８】ここで、基準形状部の中心線を基準にして
ワークを位置決めするために、位置決め部材は一対のレ
バーを含み、両レバーは枢着軸により上爪に対しチャッ
ク軸線を含む平面内で開閉可能に枢着される（請求項
６）。Here, in order to position the work with reference to the center line of the reference shape portion, the positioning member includes a pair of levers, and both levers are pivotally mounted on the upper pawl in a plane including the chuck axis with respect to the upper pawl. It is pivotally connected so as to be openable and closable (claim 6).
【０００９】上爪がワークを把持した際にレバーに無理
な力が作用しないように、枢着軸は上爪に対しチャック
半径方向へ移動可能に支承され、操作部材が親爪に固定
され、レバーを操作部材と係合する方向へ付勢するばね
部材が設けられる（請求項７）。In order to prevent an excessive force from acting on the lever when the upper pawl grips the work, the pivot shaft is supported on the upper pawl so as to be movable in the chuck radial direction, and the operating member is fixed to the main pawl. A spring member is provided for urging the lever in a direction to engage with the operation member.
【００１０】この場合、レバーによる位置決め精度を向
上させるために、上爪に枢着軸をチャック半径方向へ案
内する案内溝と、レバーをチャック外周側へ斜めに付勢
するばね部材とが設けられ、ばね部材の付勢力で枢着軸
が案内溝の基準面に押し付けられる（請求項８）。In this case, in order to improve the positioning accuracy of the lever, the upper pawl is provided with a guide groove for guiding the pivot shaft in the chuck radial direction and a spring member for biasing the lever obliquely to the outer periphery of the chuck. The pivot shaft is pressed against the reference surface of the guide groove by the urging force of the spring member (claim 8).
【００１１】レバーに無理な力を作用させないために
は、枢着軸を上爪のチャック半径方向定位置に支承し、
操作部材を親爪に対しチャック半径方向へ移動可能に支
持し、操作部材をレバーと係合する方向へ付勢するばね
部材を設けてもよい（請求項９）。In order not to apply an excessive force to the lever, the pivot shaft is supported at a fixed position in the chuck radial direction of the upper jaw,
A spring member may be provided for supporting the operation member movably in the chuck radial direction with respect to the main claw, and for urging the operation member in a direction to engage with the lever.
【００１２】また、基準形状部の片側面を基準にしてワ
ーク位置決めすることも可能である。この場合は、位置
決め部材が基準形状部の片側面に係合する固定部と基準
形状部の反対側面に係合する可動部とを含み、固定部が
上爪に固定され、可動部がレバーの一部に設けられ、レ
バーが枢着軸により上爪に対しチャック軸線を含む平面
内で揺動可能に枢着され、枢着軸が上爪のチャック半径
方向定位置に支承され、操作部材が親爪に対しチャック
半径方向へ移動可能に支持され、操作部材をレバーと係
合する方向へ付勢するばね部材が設けられる（請求項１
０）。Further, it is also possible to position the workpiece with reference to one side surface of the reference shape portion. In this case, the positioning member includes a fixed portion engaged with one side surface of the reference shape portion and a movable portion engaged with the opposite side surface of the reference shape portion, the fixed portion is fixed to the upper pawl, and the movable portion is A lever is pivotally mounted on the upper pawl by a pivot shaft so as to be swingable in a plane including the chuck axis, the pivot shaft is supported at a fixed position of the upper pawl in the chuck radial direction, and the operating member is A spring member is provided movably supported in the chuck radial direction with respect to the parent claw, and biases the operating member in a direction to engage with the lever.
0).
【００１３】ボールゲージ等の筒状ワークを位置決めす
る場合には、ワークの捩じれを防止するために、一対の
固定部を基準形状部の幅方向両端部に配置し、一つの可
動部を基準形状部の幅方向中間部に配置するのが好まし
い（請求項１１）。When positioning a cylindrical work such as a ball gauge, in order to prevent the work from being twisted, a pair of fixed portions are arranged at both ends in the width direction of the reference shape portion, and one movable portion is set to the reference shape. It is preferable to dispose it at the middle part in the width direction of the part (claim 11).
【００１４】さらに、ワークのチャック軸線周りの取付
角度が多少ずれていた場合でも、基準形状部を確実に位
置決めできるように、上爪を親爪に対しチャック軸線と
平行な軸線周りで揺動可能に支持するのが望ましい（請
求項１２）。Further, even if the mounting angle of the workpiece around the chuck axis is slightly deviated, the upper jaw can be swung about the axis parallel to the chuck axis so that the reference shape portion can be reliably positioned. It is desirable to support (claim 12).
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。まず、チャックの構成について詳
述する。この実施形態のチャックは、図１４及び図１５
に示した形状のボールゲージＷを把持するものであっ
て、図１及び図２に示すように、チャック本体１の前面
中央部にボールゲージＷが着座する略三角形のワークレ
スト２を備えている。ワークレスト２にはボールゲージ
Ｗを芯出しする芯出部材３が取り付けられ、芯出部材３
の周囲に３つの把持装置４が、図示例では等角度をおい
て、不等分３爪チャックの場合は不等角度をおいて配設
されている。Embodiments of the present invention will be described below with reference to the drawings. First, the configuration of the chuck will be described in detail. 14 and 15 show the chuck of this embodiment.
1 and 2, a chuck body 1 is provided with a substantially triangular work rest 2 at the center of the front surface of the chuck body 1 for holding the ball gauge W. As shown in FIGS. . A centering member 3 for centering the ball gauge W is attached to the work rest 2.
Are arranged at equal angles in the illustrated example, and at unequal angles in the case of an unequally divided three-jaw chuck.
【００１６】各把持装置４は親爪６と上爪７と位置決め
部材８とを備えている。親爪６はチャック本体１の溝９
にチャック半径方向へ移動可能に支持されるとともに、
二又レバー１０を介しスライダ１１に連結されている。
周知のように、スライダ１１はドローバーを介し主軸側
の回転シリンダ（何れも図示略）に連結され、これらの
部材によって親爪６を駆動する機構が構成されている。Each gripping device 4 has a main pawl 6, an upper pawl 7, and a positioning member 8. The prong 6 is a groove 9 in the chuck body 1.
While being movably supported in the chuck radial direction,
It is connected to a slider 11 via a forked lever 10.
As is well known, the slider 11 is connected to a rotary cylinder (not shown) on the main shaft side via a draw bar, and a mechanism for driving the main pawl 6 by these members is configured.
【００１７】図２〜図５に示すように、上爪７は親爪６
の凸部１３に掛止される鉤状部１４と、親爪６の支点軸
１５に嵌合する長孔１６とを備え、親爪６に対し長孔１
６の長さ範囲でチャック半径方向へ相対移動可能で、か
つチャック軸線と平行な支点軸１５の周りで揺動可能に
支持されている。そして、上爪７のチャック中心側の端
面には、ボールゲージＷの外周面を窓孔Ｈの両側で把持
する一対の把持部１７が設けられている。As shown in FIGS. 2 to 5, the upper nail 7 is
And a long hole 16 fitted on a fulcrum shaft 15 of the main claw 6.
It is relatively movable in the radial direction of the chuck within a length range of 6, and is supported swingably about a fulcrum shaft 15 parallel to the chuck axis. Further, a pair of grip portions 17 for gripping the outer peripheral surface of the ball gauge W on both sides of the window hole H are provided on an end surface of the upper claw 7 on the chuck center side.
【００１８】親爪６と上爪７との間には、双方を互いに
離れる方向へ付勢する２本のコイルスプリング１９が介
装され、そのチャック中心側端部は上爪７の両肩部に設
けたブラケット３６の突出部３６ａに当接している。そ
して、親爪６がチャック中心側へ移動したときには（図
３参照）、上爪７がコイルスプリング１９を介し親爪６
と共に移動し、把持部１７がボールゲージＷの外周面に
当たって、上爪７が停止したのち、親爪６のみがコイル
スプリング１９を圧縮しつつチャック中心側へさらに移
動できるようになっている。また、親爪６がチャック外
周側へ移動したときには（図６参照）、コイルスプリン
グ１９が伸び、親爪６の凸部１３がブラケット３６の突
出部３６ａに当接して、上爪７のチャック中心側への移
動を規制するようになっている。Two coil springs 19 are provided between the main pawl 6 and the upper pawl 7 to urge them in directions away from each other. Abuts on the protruding portion 36a of the bracket 36 provided at the first position. When the main pawl 6 moves to the chuck center side (see FIG. 3), the upper pawl 7 is moved via the coil spring 19 to the main pawl 6.
After the gripper 17 hits the outer peripheral surface of the ball gauge W and the upper pawl 7 stops, only the parent pawl 6 can move further toward the center of the chuck while compressing the coil spring 19. When the main pawl 6 moves to the outer periphery of the chuck (see FIG. 6), the coil spring 19 extends, and the projection 13 of the main pawl 6 comes into contact with the protrusion 36a of the bracket 36, and the center of the upper pawl 7 is chucked. The movement to the side is regulated.
【００１９】位置決め部材８は２本のレバー２３，２４
を枢着軸２５により開閉可能に枢着して構成されてい
る。チャック後側のレバー２３は２枚の板材を背部で結
合して形成され、このレバー２３の内側にチャック前側
のレバー２４が組み合わされている。各レバー２３，２
４のチャック中心側部分にはボールゲージＷの窓孔Ｈに
係合可能な位置決め部２３ａ，２４ａが設けられ、その
周縁は窓孔Ｈへスムーズに挿入できるように面取り加工
されている。また、レバー２３，２４のチャック外周側
部分には斜状のカム面２３ｂ，２４ｂがＶ字形に交差す
るように形成されている。The positioning member 8 includes two levers 23 and 24.
Are pivotally connected by a pivot shaft 25 so as to be openable and closable. The lever 23 on the rear side of the chuck is formed by combining two plate members at the back, and a lever 24 on the front side of the chuck is combined inside the lever 23. Each lever 23, 2
Positioning portions 23a and 24a engageable with the window hole H of the ball gauge W are provided at the center portion of the chuck 4 and the periphery thereof is chamfered so that it can be smoothly inserted into the window hole H. Also, oblique cam surfaces 23b and 24b are formed on the outer peripheral side of the chucks of the levers 23 and 24 so as to intersect in a V-shape.
【００２０】上爪７の中央部にはレバー２３，２４を収
容する溝２７が設けられ、収容溝２７のチャック内周側
には、レバー２３，２４を弾力的に保持しかつ切粉等の
異物の進入を防止するスポンジ材２８が充填されてい
る。そして、親爪６がチャック外周側へ移動したときに
は（図７参照）、スポンジ材２８の弾力により、レバー
２３，２４が位置決め部２３ａ，２４ａを窓孔Ｈに挿入
可能な閉鎖状態に保持されている。なお、位置決め部２
３ａ，２４ａは面取り部にて窓孔Ｈに挿入案内されるた
め、位置決め部２３ａ，２４ａが窓孔Ｈに触れない角度
までレバー２３，２４を閉じる必要はない。A groove 27 for accommodating the levers 23, 24 is provided at the center of the upper claw 7, and on the inner peripheral side of the chuck of the accommodation groove 27, the levers 23, 24 are elastically held and the chips 23, etc. A sponge material 28 for preventing foreign matter from entering is filled. When the main pawl 6 moves to the outer periphery of the chuck (see FIG. 7), the levers 23 and 24 are held in a closed state where the positioning portions 23a and 24a can be inserted into the window holes H by the elasticity of the sponge material 28. I have. In addition, the positioning part 2
Since the 3a and 24a are inserted and guided into the window H by the chamfered portions, it is not necessary to close the levers 23 and 24 until the positioning portions 23a and 24a do not touch the window H.
【００２１】収容溝２７の両側には半円形孔２９が形成
され、これらの孔２９には枢着軸２５を支承する部材３
０が挿入されている。支承部材３０にはチャック半径方
向に長い案内溝３１が形成され、案内溝３１に枢着軸２
５の平削部３２が摺動可能に嵌合されていて、レバー２
３，２４が上爪７に対しチャック半径方向へ相対移動可
能に支持されている。Semicircular holes 29 are formed on both sides of the accommodation groove 27, and these holes 29 have members 3 for supporting the pivot shaft 25.
0 is inserted. A long guide groove 31 is formed in the support member 30 in the radial direction of the chuck.
5 are slidably fitted with each other and the lever 2
The upper and lower pawls 3 and 24 are supported so as to be relatively movable in the chuck radial direction.
【００２２】上爪７の両側には傾斜孔３４が形成され、
前記ブラケット３６にはピン３５が傾斜孔３４のチャッ
ク外周側に位置するように取り付けられている。ピン３
５と枢着軸２５との間には、レバー２３，２４をチャッ
ク外周側へ付勢する引張ばね３７が傾斜孔３４を通して
チャック後側へ傾斜する状態で張設され、枢着軸２５の
平削部３２が引張ばね３７の付勢力によって案内溝３１
後側の基準面３１ａ（図７参照）に押し付けられてい
る。On both sides of the upper claw 7, inclined holes 34 are formed.
A pin 35 is attached to the bracket 36 so as to be located on the outer peripheral side of the chuck of the inclined hole 34. Pin 3
A tension spring 37 for urging the levers 23 and 24 toward the outer periphery of the chuck is stretched between the shaft 5 and the pivot shaft 25 through the inclined hole 34 so as to be inclined rearward of the chuck. The cutting portion 32 is moved by the urging force of the tension spring 37
It is pressed against the rear reference surface 31a (see FIG. 7).
【００２３】上爪７よりチャック外周側において親爪６
には、レバー２３，２４のカム面２３ｂ，２４ｂに係合
する操作部材としてのピン３９が固定されている。そし
て、上爪７の停止状態で親爪６がチャック中心側へ移動
したときには、双方の相対移動により操作ピン３９がレ
バー２３，２４をスポンジ材２８の弾力に抗して押し開
き、位置決め部２３ａ，２４ａが窓孔Ｈの内面に係合し
て、ボールゲージＷをチャック軸線方向に位置決めする
ようになっている。On the outer peripheral side of the chuck with respect to the upper pawl 7, the main pawl 6
, A pin 39 as an operation member engaged with the cam surfaces 23b and 24b of the levers 23 and 24 is fixed. When the main pawl 6 moves toward the center of the chuck with the upper pawl 7 stopped, the operation pin 39 pushes the levers 23 and 24 open against the elasticity of the sponge material 28 due to the relative movement of the two, and the positioning portion 23a , 24a engage with the inner surface of the window H to position the ball gauge W in the axial direction of the chuck.
【００２４】また、親爪６と上爪７のチャック半径方向
の相対面には、親爪６をチャック中心側で停止させる当
接部４１，４２が設けられている。そして、ワーク位置
決め後に親爪６がチャック中心側へさらに移動したとき
には、操作ピン３９がレバー２３，２４を引張ばね３７
のばね力に抗してチャック中心側へ僅かに押し出し、親
爪６の当接部４１が上爪７の当接部４２に当たり、その
位置で親爪６が停止し、親爪６の把持力が上爪７を介し
ボールゲージＷに作用するようになっている。Contact portions 41 and 42 for stopping the main claw 6 at the center of the chuck are provided on the relative surface of the main claw 6 and the upper claw 7 in the chuck radial direction. When the main pawl 6 further moves toward the center of the chuck after the work is positioned, the operating pin 39 pushes the levers 23 and 24 to the tension spring 37.
Slightly against the center of the chuck against the spring force of the main claw 6, the contact portion 41 of the main claw 6 comes into contact with the contact portion 42 of the upper claw 7, and the main claw 6 stops at that position. Acts on the ball gauge W via the upper claw 7.
【００２５】なお、前記支点軸１５は、上爪７の前方か
ら、長孔１６と重なる挿通孔４３（図５参照）を通して
親爪６の孔４４に挿入され、ボルト（図示略）によって
固定されている。上爪７の前面及び内周面には異物の進
入を防止するカバー２０，２１（図２参照）が取り付け
られ、前面側のカバー２０によってスポンジ材２８が収
容溝２７に保持されている。The fulcrum shaft 15 is inserted into the hole 44 of the parent claw 6 from the front of the upper claw 7 through an insertion hole 43 (see FIG. 5) overlapping the long hole 16 and fixed by bolts (not shown). ing. Covers 20 and 21 (see FIG. 2) for preventing foreign matter from entering are attached to the front surface and the inner peripheral surface of the upper claw 7, and the sponge material 28 is held in the housing groove 27 by the front cover 20.
【００２６】次に、上記構成のチャックを用いたボール
ゲージＷの端面加工方法をチャックの作用と合わせて説
明する。この実施形態の端面加工方法は、図１６に示し
たボールゲージＷの加工プロセスのうち端面研削工程に
おいて実施される。この工程の前には、従来と同様、筒
状体の総旋削工程と、周壁に窓孔Ｈを明ける窓パンチ工
程と、窓孔Ｈの両側面をブローチ仕上げする窓ブローチ
工程と、筒状体の熱処理工程とが実施される。Next, a method of processing the end face of the ball gauge W using the chuck having the above configuration will be described together with the operation of the chuck. The end face processing method of this embodiment is performed in the end face grinding step of the ball gauge W processing process shown in FIG. Prior to this step, as in the prior art, a total turning step of the cylindrical body, a window punching step of opening a window hole H in the peripheral wall, a window broaching step of broaching both sides of the window hole H, and a cylindrical body Is performed.
【００２７】ボールゲージＷの端面研削に際しては、ま
ず、ボールゲージＷをチャックに取り付け、次いで、各
把持装置４の親爪６を閉じる。このとき、親爪６は図６
及び図７に示す位置からチャック中心側へ移動し、上爪
７もコイルスプリング１９に押されて親爪６と共にチャ
ック中心側へ移動する。そして、図８に示すように、位
置決め部２３ａ，２４ａが閉じたままの状態で窓孔Ｈの
内側に進入し、把持部１７がボールゲージＷの外周面に
当接して、上爪７が停止する。この実施形態のチャック
によれば、上爪７が親爪６に対しチャック軸線と平行な
支点軸１５の周りで揺動可能に支持されているので、チ
ャック軸線周りにおけるボールゲージＷの取付角度が多
少ずれていた場合でも、上爪７の首振り動作（図６参
照）により一対の把持部１７を窓孔Ｈの両側に均等に配
置してボールゲージＷを確実に把持することができる。At the time of grinding the end face of the ball gauge W, first, the ball gauge W is attached to the chuck, and then the main claws 6 of each gripping device 4 are closed. At this time, the parent nail 6 is
7, the upper pawl 7 is also pushed by the coil spring 19 and moves together with the parent pawl 6 toward the chuck center. Then, as shown in FIG. 8, the positioning portions 23a and 24a enter the inside of the window hole H in a state where the positioning portions 23a and 24a are closed, the grip portion 17 comes into contact with the outer peripheral surface of the ball gauge W, and the upper claw 7 stops. I do. According to the chuck of this embodiment, since the upper pawl 7 is supported by the main pawl 6 so as to be able to swing around the fulcrum shaft 15 parallel to the chuck axis, the mounting angle of the ball gauge W around the chuck axis is reduced. Even in the case of slight deviation, the pair of gripping portions 17 can be evenly arranged on both sides of the window hole H by the swinging operation of the upper claw 7 (see FIG. 6), so that the ball gauge W can be reliably gripped.
【００２８】この上爪７の停止状態で、親爪６がチャッ
ク中心側へさらに移動すると、親爪６と上爪７との相対
移動により、コイルスプリング１９が圧縮し、図９に示
すように、操作ピン３９がレバー２３，２４をスポンジ
材２８の弾力に抗して押し開き、位置決め部２３ａ，２
４ａが窓孔Ｈをチャック軸線方向の両側から把持して、
窓孔Ｈのチャック軸線方向の中心線Ｌ（図１５参照）を
基準にして、ボールゲージＷを位置決めする。この場
合、枢着軸２５の平削部３２が引張ばね３７により案内
溝３１の基準面３１ａに押し付けられているので、枢着
軸２５のガタ付きを防止し、これを常にチャック軸線方
向の定位置に保持し、その位置を基準にしてボールゲー
ジＷを高精度に位置決めすることができる。When the main pawl 6 is further moved toward the center of the chuck with the upper pawl 7 stopped, the coil spring 19 is compressed by the relative movement between the main pawl 6 and the upper pawl 7, and as shown in FIG. , The operating pin 39 pushes the levers 23 and 24 open against the elasticity of the sponge material 28, and the positioning portions 23 a and 2
4a grips the window H from both sides in the chuck axis direction,
The ball gauge W is positioned with reference to the center line L of the window hole H in the chuck axis direction (see FIG. 15). In this case, since the planing portion 32 of the pivot shaft 25 is pressed against the reference surface 31a of the guide groove 31 by the tension spring 37, the backlash of the pivot shaft 25 is prevented, and this is always fixed in the chuck axis direction. Position, and the ball gauge W can be positioned with high accuracy based on the position.
【００２９】位置決め後に、親爪６がチャック中心側へ
さらに移動すると、図３及び図１０に示すように、その
当接部４１が上爪７の当接部４２に当たり、この位置で
親爪６が停止し、親爪６の把持力が上爪７に伝わり、上
爪７の把持部１７がボールゲージＷの外周面をチャック
半径方向から強力に把持する。このとき、レバー２３，
２４は操作ピン３９に押され、引張ばね３７のばね力に
抗して枢着軸２５と共にチャック中心側へ僅かに移動
し、位置決め部２３ａ，２４ａが窓孔Ｈの内面に弾接し
た状態で摺動する。従って、開放状態のレバー２３，２
４が親爪６の把持力で無理に押し開けられるおそれがな
く、位置決め部材８各部の破損を防止することができ
る。When the main pawl 6 further moves toward the center of the chuck after the positioning, as shown in FIGS. 3 and 10, the contact portion 41 hits the contact portion 42 of the upper pawl 7, and at this position, the main pawl 6 Is stopped, the gripping force of the parent claw 6 is transmitted to the upper claw 7, and the gripper 17 of the upper claw 7 strongly grips the outer peripheral surface of the ball gauge W from the chuck radial direction. At this time, lever 23,
Reference numeral 24 is pushed by the operation pin 39 and slightly moves toward the center of the chuck together with the pivot shaft 25 against the spring force of the tension spring 37, with the positioning portions 23 a and 24 a elastically contacting the inner surface of the window H. Slide. Therefore, the levers 23, 2 in the open state are
There is no possibility that the 4 will be forcibly pushed open by the gripping force of the main claw 6, and it is possible to prevent each part of the positioning member 8 from being damaged.
【００３０】この把持状態で、続いて、ボールゲージＷ
の端面を研削盤の砥石で旋削し、前工程で生じた打痕や
熱処理歪を除去して、端面を仕上げる。この場合、ボー
ルゲージＷは窓孔Ｈの中心線Ｌを基準にしてチャック軸
線方向に位置決めされているので、端面を旋削するだけ
の簡単な方法でボールゲージＷの窓位置寸法Ａ（図１５
参照）を正確に出すことができる。従って、図１６に示
すように、端面研削後に外球研削工程及び内球研削工程
を実施すれば、これでもってボールゲージＷの製品が完
成する。それ故、従来とは異なり、加工プロセスから窓
研削工程を省略することができて、ボールゲージＷを汎
用の研削盤で能率よく安価に加工することができる。In this gripping state, the ball gauge W
The end face is turned with a grindstone of a grinding machine to remove dents and heat treatment distortion generated in the previous process, thereby finishing the end face. In this case, since the ball gauge W is positioned in the chuck axis direction with reference to the center line L of the window hole H, the window position dimension A of the ball gauge W (FIG. 15) can be obtained simply by turning the end face.
Reference) can be issued accurately. Therefore, as shown in FIG. 16, if the outer ball grinding step and the inner ball grinding step are performed after the end face grinding, the product of the ball gauge W is completed thereby. Therefore, unlike the related art, the window grinding step can be omitted from the machining process, and the ball gauge W can be efficiently and inexpensively machined by a general-purpose grinder.
【００３１】なお、ボールゲージＷの解放時には、把持
装置４の各部が把持時と逆順に動作し、まず、図１０に
示す状態で、親爪６がチャック外周側へ移動し、操作ピ
ン３９の押圧力がなくなり、図９に示すように、レバー
２３，２４が引張ばね３７のばね力で枢着軸２５が案内
溝３１の端面に当たる位置までチャック外周側へ移動す
る。次いで、図８に示すように、親爪６の移動に伴い、
操作ピン３９と位置決め部材８とに相対移動が生じ、こ
れによってレバー２３，２４がスポンジ材２８（図２参
照）の弾力で閉じ、位置決め部２３ａ，２４ａが窓孔Ｈ
の内面から離れる。続いて、図６に示すように、親爪６
の凸部１３がブラケット３６の突出部３６ａに当接し、
図７に示すように、上爪７が親爪６と共にチャック外周
側へ移動し、把持部１７がボールゲージＷから離れ、位
置決め部２３ａ，２４ａが窓孔Ｈの外側へ出て、ボール
ゲージＷが解放される。When the ball gauge W is released, each part of the gripping device 4 operates in the reverse order of gripping. First, in the state shown in FIG. The pressing force disappears, and the levers 23 and 24 move toward the outer periphery of the chuck by the spring force of the tension spring 37 until the pivot shaft 25 comes into contact with the end face of the guide groove 31, as shown in FIG. Next, as shown in FIG.
A relative movement occurs between the operation pin 39 and the positioning member 8, whereby the levers 23 and 24 are closed by the elasticity of the sponge material 28 (see FIG. 2), and the positioning portions 23a and 24a are closed by the window holes H.
Away from the inside of Subsequently, as shown in FIG.
The projection 13 of the bracket abuts the projection 36a of the bracket 36,
As shown in FIG. 7, the upper pawl 7 moves to the outer peripheral side of the chuck together with the parent pawl 6, the gripper 17 separates from the ball gauge W, the positioning parts 23a and 24a come out of the window H, and the ball gauge W Is released.
【００３２】図１１は把持装置４の別の実施形態を示す
ものである。この把持装置４においては、前記実施形態
とは異なり、レバー２３，２４の枢着軸５１が上爪７に
固定され、操作ピン５２は親爪６に対しチャック半径方
向へ相対移動可能に支持されている。操作ピン５２には
レバー２３，２４のカム面２３ｂ，２４ｂと係合する係
合子５３が固定されるとともに、係合子５３をカム面２
３ｂ，２４ｂ側へ付勢する圧縮ばね５４が嵌挿されてい
る。そして、上爪７の停止状態で親爪６がチャック中心
側へ移動したときに、係合子５３が圧縮ばね５４のばね
力でレバー２３，２４を押し開き、位置決め部２３ａ，
２４ａが窓孔Ｈをチャック軸線方向の両側から把持し
て、ボールゲージＷを位置決めするようになっている。FIG. 11 shows another embodiment of the gripping device 4. In this gripping device 4, unlike the above-described embodiment, the pivot shaft 51 of the levers 23 and 24 is fixed to the upper pawl 7, and the operation pin 52 is supported so as to be relatively movable in the chuck radial direction with respect to the main pawl 6. ing. An engaging element 53 that engages with the cam surfaces 23b and 24b of the levers 23 and 24 is fixed to the operation pin 52, and the engaging element 53 is
A compression spring 54 for urging toward the 3b, 24b side is inserted. When the main pawl 6 moves toward the center of the chuck with the upper pawl 7 stopped, the engaging element 53 pushes the levers 23 and 24 open by the spring force of the compression spring 54, and the positioning parts 23a and
24a grips the window H from both sides in the axial direction of the chuck and positions the ball gauge W.
【００３３】位置決め後には、親爪６が当接部４１，４
２の当接位置まで移動して停止し、親爪６の把持力によ
って上爪７の把持部１７がボールゲージＷの外周面をチ
ャック半径方向から強力に把持するが、親爪６と操作ピ
ン５２との間に相対移動が生じるため、レバー２３，２
４には親爪６の把持力が作用しない。従って、前記実施
形態と同様、開放状態のレバー２３，２４が無理に押し
開けられるおそれがなく、位置決め部材８各部の破損を
防止することができる。また、レバー２３，２４はチャ
ック半径方向に停止した状態でボールゲージＷを把持す
るので、窓孔Ｈの内面に擦り傷が付くおそれもない。な
お、このチャックを用いたボールゲージＷの端面加工方
法は前記実施形態と同様であり、同等の効果を奏する。After the positioning, the main claws 6 are brought into contact with the contact portions 41 and 4.
2 and stops, and the gripping portion 17 of the upper claw 7 strongly grips the outer peripheral surface of the ball gauge W from the chuck radial direction by the gripping force of the main claw 6. 52, the levers 23, 2
The gripping force of the parent nail 6 does not act on 4. Therefore, similarly to the above-described embodiment, there is no possibility that the levers 23 and 24 in the open state are forcibly pushed open, and it is possible to prevent each part of the positioning member 8 from being damaged. Further, since the levers 23 and 24 hold the ball gauge W in a state where the levers 23 and 24 are stopped in the radial direction of the chuck, there is no possibility that the inner surface of the window hole H is scratched. The method of processing the end surface of the ball gauge W using the chuck is the same as that of the above-described embodiment, and has the same effect.
【００３４】図１２は把持装置４のさらに別の実施形態
を示すものである。この把持装置４は、周壁に基準形状
部としての鍔状突起Ｐを備えた筒状体からなるワークＷ
に適用されるもので、位置決め部材８の構成において前
記実施形態と相違する。すなわち、このチャックの位置
決め部材８は、レバー２３，２４が操作ピン３９によっ
て押し開けられたときに、位置決め部２３ａ，２４ａが
閉じ、鍔状突起Ｐをチャック軸線方向両側から把持し
て、ワークＷを位置決めするように構成されている。レ
バー２３，２４の相対部間には、位置決め部２３ａ，２
４ａを開く方向へ付勢するばね５５が介装されている。
このチャックの場合も、ワークＷの端面加工方法は前記
実施形態と同様であり、同等の効果を奏する。FIG. 12 shows still another embodiment of the gripping device 4. This gripping device 4 is a work W composed of a cylindrical body having a flange-shaped projection P as a reference shape portion on the peripheral wall.
This embodiment is different from the above-described embodiment in the configuration of the positioning member 8. That is, when the levers 23 and 24 are pushed open by the operation pins 39, the positioning member 8 of the chuck closes the positioning portions 23a and 24a, grips the flange-shaped protrusion P from both sides in the chuck axial direction, and moves the work W Is configured to be positioned. Positioning portions 23a, 2 are provided between the relative portions of the levers 23, 24.
A spring 55 for urging the opening 4a in the opening direction is interposed.
Also in the case of this chuck, the method of processing the end surface of the work W is the same as that of the above-described embodiment, and has the same effect.
【００３５】図１３は把持装置４のさらに別の実施形態
を示すものである。このチャックはボールゲージＷを把
持するものであって、把持装置４の位置決め部材８は窓
孔Ｈの前側面に係合する一対の固定部６１と窓孔Ｈの後
側面に係合する一つの可動部６２とを備えている。固定
部６１は把持部１７の間において上爪７に一体的に固定
され、可動部６２はレバー６３の内端部に設けられてい
る。そして、上爪７がチャック内側へ移動したときに
は、固定部６１が窓孔Ｈの幅方向（ボールゲージＷの周
方向）両端部に配置され、可動部６２が窓孔Ｈの幅方向
中間部に配置され、位置決めに際してボールゲージＷの
捩じれを防止できるようになっている。また、窓孔Ｈの
両側面に固定部６１及び可動部６２を広い面積で接触さ
せるためには、一対の固定部６１の幅寸法Ｒ１を窓孔Ｈ
の幅寸法Ｒ２より僅かに小さく設定し、可動部６２の幅
寸法Ｒ３をできるだけ大きく設定するのが望ましい。FIG. 13 shows still another embodiment of the gripping device 4. The chuck grips the ball gauge W. The positioning member 8 of the gripping device 4 has a pair of fixing portions 61 that engage with the front surface of the window H and one of the fixing portions 61 that engages with the rear of the window H. And a movable portion 62. The fixed portion 61 is integrally fixed to the upper pawl 7 between the grip portions 17, and the movable portion 62 is provided at an inner end of the lever 63. When the upper claw 7 moves to the inside of the chuck, the fixing portions 61 are arranged at both ends in the width direction of the window hole H (the circumferential direction of the ball gauge W), and the movable portion 62 is located at the middle portion in the width direction of the window hole H. The ball gauge W is arranged so as to prevent the ball gauge W from being twisted at the time of positioning. Further, in order to bring the fixed portion 61 and the movable portion 62 into contact with both side surfaces of the window H over a large area, the width dimension R1 of the pair of fixed portions 61 is set to the window H.
It is desirable that the width R2 of the movable portion 62 be set as large as possible.
【００３６】レバー６３は枢着軸６４により上爪７に対
しチャック軸線を含む平面内で揺動可能に枢着され、枢
着軸６４は上爪７のチャック半径方向定位置に支承され
ている。親爪６にはレバー６３の操作部材であるピン６
５が揺動アーム６６を介してチャック半径方向へ移動可
能に支持されている。すなわち、揺動アーム６６は軸６
７によりチャック軸線を含む平面内で揺動可能に支持さ
れ、このアーム６６の前端に操作ピン６５が固着されて
いる。そして、揺動アーム６６の後端部と親爪６との間
にばね部材としての圧縮ばね６８が介装され、このばね
６８によって揺動アーム６６が親爪６の当接面６９に押
し付けられるとともに、操作ピン６５がレバー６３のカ
ム面６３ａと係合する方向へ付勢されている。The lever 63 is pivotally attached to the upper pawl 7 by a pivot shaft 64 in a plane including the chuck axis, and the pivot shaft 64 is supported at a fixed position of the upper pawl 7 in the chuck radial direction. . The pin 6 which is an operation member of the lever 63 is
5 is supported via a swing arm 66 so as to be movable in the chuck radial direction. That is, the swing arm 66 is
The arm 66 is swingably supported in a plane including the chuck axis, and an operation pin 65 is fixed to a front end of the arm 66. A compression spring 68 as a spring member is interposed between the rear end of the swing arm 66 and the main pawl 6, and the swing arm 66 is pressed against the contact surface 69 of the main pawl 6 by the spring 68. At the same time, the operation pin 65 is urged in a direction to engage with the cam surface 63a of the lever 63.
【００３７】上記構成のチャックにおいて、把持部１７
がボールゲージＷの外周面に当接し、上爪７が停止した
状態で、親爪６がチャック中心側へ移動すると、操作ピ
ン６５が圧縮ばね６８の付勢力に相当する力でレバー６
３のカム面６３ａを押し、レバー６３が図の時計方向へ
揺動し、可動部６２が窓孔Ｈの後側面に係合して、固定
部６１が窓孔Ｈの前側面に係合する位置までボールゲー
ジＷをチャック後側へシフトし、この状態で、固定部６
１及び可動部６２が窓孔Ｈをチャック軸線方向の両側か
ら把持する。従って、このチャックによれば、前記実施
形態とは異なり、ボールゲージＷを窓孔Ｈの前側面を基
準にしてチャック軸線方向に位置決めすることができ
る。In the chuck having the above-described structure, the holding portion 17
Abuts against the outer peripheral surface of the ball gauge W and the upper pawl 7 is stopped, and when the main pawl 6 moves toward the center of the chuck, the operating pin 65 moves the lever 6 with a force corresponding to the urging force of the compression spring 68.
3, the cam surface 63a is pushed, the lever 63 swings clockwise in the figure, the movable portion 62 engages with the rear surface of the window H, and the fixed portion 61 engages with the front surface of the window H. The ball gauge W is shifted to the rear side of the chuck to the position, and in this state, the fixing portion 6
1 and the movable portion 62 grip the window hole H from both sides in the axial direction of the chuck. Therefore, according to this chuck, unlike the above embodiment, the ball gauge W can be positioned in the chuck axial direction with reference to the front side surface of the window hole H.
【００３８】位置決め後には、親爪６が当接部４１，４
２の当接位置まで移動して停止し、親爪６の把持力によ
って把持部１７がボールゲージＷの外周面をチャック半
径方向から強力に把持する。このとき、揺動アーム６６
は圧縮ばね６８の付勢力に抗し図の反時計方向へ揺動し
て、親爪６と操作ピン６５との間に相対移動を生じさせ
る。このため、レバー６３に親爪６の把持力が作用せ
ず、可動部６２が窓孔Ｈの後側面に無理に押し付けられ
るおそれがない。また、レバー６３はチャック半径方向
に停止した状態でボールゲージＷを把持するので、窓孔
Ｈの内面に擦り傷が付くおそれもない。それ故、この実
施形態のチャックによれば、窓孔Ｈの前側面を基準にし
た端面加工方法を首尾よく実施でき、加工プロセスから
窓研削工程を省略して、ボールゲージＷを汎用の研削盤
で能率よく安価に加工することができる。After the positioning, the main claws 6 are brought into contact with the contact portions 41 and 4.
2 and stops, and the gripping portion 17 strongly grips the outer peripheral surface of the ball gauge W from the chuck radial direction by the gripping force of the parent claw 6. At this time, the swing arm 66
Swings counterclockwise in the figure against the urging force of the compression spring 68 to cause relative movement between the main pawl 6 and the operation pin 65. Therefore, the gripping force of the main claw 6 does not act on the lever 63, and there is no possibility that the movable portion 62 is forcibly pressed against the rear side surface of the window H. Further, since the lever 63 grips the ball gauge W in a state where the lever 63 is stopped in the radial direction of the chuck, there is no possibility that the inner surface of the window hole H is scratched. Therefore, according to the chuck of this embodiment, the end face machining method based on the front side surface of the window hole H can be successfully performed, and the window grinding step is omitted from the machining process, and the ball gauge W is replaced with a general-purpose grinding machine. And can be processed efficiently and inexpensively.
【００３９】なお、本発明の端面加工方法及びチャック
は、研削盤に限定されるものではなく、旋盤等の各種旋
削用工作機械にも適用することができる。その他、本発
明は上記実施形態に限定されるものではなく、本発明の
趣旨を逸脱しない範囲で各部の形状並びに構成を適宜に
変更して具体化することも可能である。Note that the end face processing method and the chuck of the present invention are not limited to a grinding machine, but can be applied to various turning machine tools such as a lathe. In addition, the present invention is not limited to the above-described embodiment, and may be embodied by appropriately changing the shape and configuration of each part without departing from the spirit of the present invention.
【００４０】[0040]
【発明の効果】以上詳述したように、本発明の端面加工
方法によれば、基準形状部を基準にしてワークの端面を
旋削でき、その後の仕上工程を省略して、基準形状部付
きワークの加工プロセスを簡略化できる効果がある。ま
た、本発明のチャックによれば、基準形状部を基準にし
てワークを高精度に位置決めでき、本発明の端面加工方
法を首尾よく実施できる効果がある。As described above in detail, according to the method for processing an end face of the present invention, the end face of the work can be turned with reference to the reference shape part, and the subsequent finishing step can be omitted, and the work with the reference shape part can be omitted. This has the effect of simplifying the processing process. Further, according to the chuck of the present invention, the workpiece can be positioned with high accuracy based on the reference shape portion, and the end face processing method of the present invention can be successfully performed.
【図１】本発明の一実施形態を示すチャックの正面図で
ある。FIG. 1 is a front view of a chuck showing one embodiment of the present invention.
【図２】図１の２−２線に沿うチャックの断面図であ
る。FIG. 2 is a cross-sectional view of the chuck taken along line 2-2 of FIG.
【図３】図２の３−３線に沿う把持装置の断面図であ
る。FIG. 3 is a sectional view of the gripping device taken along line 3-3 in FIG. 2;
【図４】図２の４−４線に沿う把持装置の平面図であ
る。FIG. 4 is a plan view of the gripping device taken along line 4-4 in FIG. 2;
【図５】図２の５−５線に沿う把持装置の断面図であ
る。FIG. 5 is a sectional view of the gripping device taken along line 5-5 in FIG. 2;
【図６】ワーク解放位置の把持装置を示す正断面図であ
る。FIG. 6 is a front sectional view showing the gripping device at a work release position.
【図７】ワーク解放位置の把持装置を示す側断面図であ
る。FIG. 7 is a side sectional view showing the gripping device at a work release position.
【図８】図７に続く把持装置の作用を示す側断面図であ
る。FIG. 8 is a side sectional view showing the operation of the gripping device continued from FIG. 7;
【図９】図８に続く把持装置の作用を示す側断面図であ
る。FIG. 9 is a side sectional view showing the operation of the gripping device continued from FIG. 8;
【図１０】図９に続く把持装置の作用を示す側断面図で
ある。FIG. 10 is a side sectional view showing the operation of the gripping device continued from FIG. 9;
【図１１】把持装置の別の実施形態を示す側断面図であ
る。FIG. 11 is a side sectional view showing another embodiment of the gripping device.
【図１２】把持装置のさらに別の実施形態を示す側断面
図である。FIG. 12 is a side sectional view showing still another embodiment of the gripping device.
【図１３】把持装置のさらに別の実施形態を示す側断面
図である。FIG. 13 is a side sectional view showing still another embodiment of the gripping device.
【図１４】ワークとしてボールゲージを例示する斜視図
である。FIG. 14 is a perspective view illustrating a ball gauge as a work.
【図１５】ボールゲージの断面図である。FIG. 15 is a sectional view of a ball gauge.
【図１６】従来のボールゲージ加工プロセスを示す工程
図である。FIG. 16 is a process diagram showing a conventional ball gauge processing process.
１・・チャック本体、４・・把持装置、６・・親爪、７
・・上爪、８・・位置決め部材、１５・・支点軸、１６
・・長孔、１７・・把持部、１９・・コイルスプリン
グ、２３，２４，６３・・レバー、２５，５１，６４・
・枢着軸、３０・・支承部材、３１・・案内溝、３７・
・引張ばね、３９，５２，６５・・操作ピン、４１，４
２・・当接部、５４，６８・・圧縮ばね、Ｌ・・中心
線、Ｗ・・ボールゲージ（ワーク）、Ｈ・・窓孔、Ｐ・
・鍔状突起。1. chuck body, 4. gripping device, 6. nail, 7
..Upper claws, 8 positioning members, 15 fulcrum shafts, 16
..Elongated hole, 17-Grip, 19-Coil spring, 23,24,63-Lever, 25,51,64-
.Pivot shafts, 30..Support members, 31..Guide grooves, 37 ..
.Tension springs, 39,52,65..Operation pins, 41,4
2 ··· Contact part, 54, 68 ··· Compression spring, L · · · center line, W · · Ball gauge (work), H · · · Window hole, P ·
・ Flange-shaped protrusions.
Claims (12)
えたワークをチャックに取り付け、チャックの爪を閉
じ、基準形状部をチャック軸線方向から把持して、ワー
クを位置決めしたのち、ワークの外周面をチャック半径
方向から把持し、この状態で、ワークの端面を旋削する
ことを特徴とする端面加工方法。1. A work provided with a reference shape portion such as a hole, a groove, a protrusion, etc. on an outer periphery is attached to a chuck, a claw of the chuck is closed, the reference shape portion is gripped from the chuck axial direction, and the work is positioned. An end face processing method comprising: gripping an outer peripheral surface of a work from a chuck radial direction; and turning an end surface of the work in this state.
を位置決めする請求項１記載の端面加工方法。2. The end face processing method according to claim 1, wherein the workpiece is positioned with reference to a center line of the reference shape portion.
を位置決めする請求項１記載の端面加工方法。3. The end face machining method according to claim 1, wherein the workpiece is positioned with reference to one side surface of the reference shape portion.
ボールゲージ又はこれに類似する形状の筒状体からなる
ワークに適用した請求項１〜３記載の端面加工方法。4. The end face processing method according to claim 1, wherein the method is applied to a work formed of a ball gauge having a window hole as a reference shape portion on a peripheral wall or a cylindrical body having a shape similar to the ball gauge.
えたワークを把持するチャックであって、チャック本体
に複数の親爪をチャック半径方向へ移動可能に組み付
け、各親爪に上爪をチャック半径方向へ相対移動可能に
支持し、上爪にワークの外周面を把持する把持部を設け
るとともに、基準形状部をチャック軸線方向から把持し
てワークを位置決めする位置決め部材を支持し、親爪を
駆動する機構と、親爪と上爪との相対移動により位置決
め部材を操作する操作部材とを設けてなるチャック。5. A chuck for gripping a workpiece having a reference shape portion such as a hole, a groove, a projection, etc. on an outer periphery, wherein a plurality of parent claws are assembled to a chuck body so as to be movable in a radial direction of the chuck, The upper jaw is supported so as to be relatively movable in the chuck radial direction, and the upper jaw is provided with a gripping portion for gripping the outer peripheral surface of the work, and the positioning member for gripping the reference shape portion from the chuck axial direction and positioning the work is supported. A chuck provided with a mechanism for driving the main claw and an operation member for operating the positioning member by relative movement between the main claw and the upper claw.
レバーを枢着軸により上爪に対しチャック軸線を含む平
面内で開閉可能に枢着した請求項５記載のチャック。6. The chuck according to claim 5, wherein the positioning member includes a pair of levers, and both levers are pivotally connected to the upper pawl in a plane including the chuck axis by a pivot shaft.
移動可能に支承し、操作部材を親爪に固定し、レバーを
操作部材と係合する方向へ付勢するばね部材を備えた請
求項６記載のチャック。7. A spring member for supporting the pivot shaft so as to be movable in the radial direction of the chuck with respect to the upper pawl, fixing the operating member to the main pawl, and biasing the lever in a direction engaging with the operating member. The chuck according to claim 6.
する案内溝と、レバーをチャック外周側へ斜めに付勢す
るばね部材とを設け、ばね部材の付勢力で枢着軸を案内
溝の基準面に押し付けてなる請求項７記載のチャック。8. An upper claw is provided with a guide groove for guiding a pivot shaft in the chuck radial direction and a spring member for biasing the lever obliquely to the outer periphery of the chuck, and guiding the pivot shaft by the urging force of the spring member. The chuck according to claim 7, wherein the chuck is pressed against a reference surface of the groove.
に支承し、操作部材を親爪に対しチャック半径方向へ移
動可能に支持し、操作部材をレバーと係合する方向へ付
勢するばね部材を備えた請求項６記載のチャック。9. A pivot shaft is supported at a fixed position of an upper pawl in a chuck radial direction, an operating member is supported movably in a chuck radial direction with respect to a main pawl, and the operating member is urged in a direction to engage with the lever. The chuck according to claim 6, further comprising a spring member that performs the operation.
係合する固定部と基準形状部の反対側面に係合する可動
部とを含み、固定部を上爪に固定し、可動部をレバーの
一部に設け、レバーを枢着軸により上爪に対しチャック
軸線を含む平面内で揺動可能に枢着し、枢着軸を上爪の
チャック半径方向定位置に支承し、操作部材を親爪に対
しチャック半径方向へ移動可能に支持し、操作部材をレ
バーと係合する方向へ付勢するばね部材を備えた請求項
５記載のチャック。10. The positioning member includes a fixed portion engaged with one side surface of the reference shape portion and a movable portion engaged with the opposite side surface of the reference shape portion, the fixed portion is fixed to the upper pawl, and the movable portion is a lever. The lever is pivotally attached to the upper pawl by a pivot shaft in a plane including the chuck axis, and the pivot shaft is supported at a fixed position in the chuck radial direction of the upper pawl, and the operating member is 6. The chuck according to claim 5, further comprising a spring member movably supported in a radial direction of the chuck with respect to the parent claw, and urging the operation member in a direction to engage with the lever.
端部に配置し、一つの可動部を基準形状部の幅方向中間
部に配置した請求項１０記載のチャック。11. The chuck according to claim 10, wherein a pair of fixed portions are disposed at both ends in the width direction of the reference shape portion, and one movable portion is disposed at an intermediate portion in the width direction of the reference shape portion.
な軸線周りで揺動可能に支持した請求項５〜１１記載の
チャック。12. The chuck according to claim 5, wherein the upper pawl is supported on the main pawl so as to be swingable about an axis parallel to the chuck axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36806998A JP3420096B2 (en) | 1998-06-25 | 1998-12-24 | End face processing method and chuck used therefor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17923498 | 1998-06-25 | ||
| JP10-179234 | 1998-06-25 | ||
| JP36806998A JP3420096B2 (en) | 1998-06-25 | 1998-12-24 | End face processing method and chuck used therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000079505A true JP2000079505A (en) | 2000-03-21 |
| JP3420096B2 JP3420096B2 (en) | 2003-06-23 |
Family
ID=26499152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36806998A Expired - Fee Related JP3420096B2 (en) | 1998-06-25 | 1998-12-24 | End face processing method and chuck used therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3420096B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008272888A (en) * | 2007-04-27 | 2008-11-13 | Riken Seiki Kk | Workpiece holding device |
| JP2019025622A (en) * | 2017-08-02 | 2019-02-21 | 株式会社 神崎高級工機製作所 | Fixing device |
| CN114102068A (en) * | 2021-12-17 | 2022-03-01 | 江西洪都航空工业集团有限责任公司 | Method and die for machining support arm part with special-shaped structure |
-
1998
- 1998-12-24 JP JP36806998A patent/JP3420096B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008272888A (en) * | 2007-04-27 | 2008-11-13 | Riken Seiki Kk | Workpiece holding device |
| JP2019025622A (en) * | 2017-08-02 | 2019-02-21 | 株式会社 神崎高級工機製作所 | Fixing device |
| CN114102068A (en) * | 2021-12-17 | 2022-03-01 | 江西洪都航空工业集团有限责任公司 | Method and die for machining support arm part with special-shaped structure |
| CN114102068B (en) * | 2021-12-17 | 2023-10-03 | 江西洪都航空工业集团有限责任公司 | Processing method and die for support arm part with special-shaped structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3420096B2 (en) | 2003-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7252043B2 (en) | Work tools | |
| JP2000079505A (en) | End face machining method and chuck used for this method | |
| JP2010046786A (en) | Workpiece positioning device | |
| JPS63229208A (en) | Pull-in type clamping device in chuck of lathe or the like | |
| JP2006095633A (en) | Work chuck device | |
| JP6654405B2 (en) | Chuck device | |
| JP4146617B2 (en) | Tool unclamping device for machine tools | |
| WO2002003044A1 (en) | Mass centering machine | |
| JP4363233B2 (en) | Tool changer for machine tools | |
| JP4524875B2 (en) | Chuck | |
| JPS60180742A (en) | Centering method for cylindrical grinding machine | |
| JP7280049B2 (en) | Chuck device | |
| JPH0735691Y2 (en) | Holding device for crankshaft machining | |
| JP2003103427A (en) | Exchanging tool | |
| JP3446414B2 (en) | Finger chuck | |
| JP2005095996A (en) | Chuck device | |
| JPS6338965Y2 (en) | ||
| JPH0340493Y2 (en) | ||
| JPH09239607A (en) | Face clamp chuck | |
| JP3841856B2 (en) | Clamper | |
| JPH023418Y2 (en) | ||
| JP2559222Y2 (en) | Work driver for cam grinding | |
| JPS5853193Y2 (en) | Rotary workpiece gripping device | |
| JPH018243Y2 (en) | ||
| JPH04201006A (en) | Chuck |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090418 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100418 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110418 Year of fee payment: 8 |
|
| LAPS | Cancellation because of no payment of annual fees |