JPS61214939A - Replacement tool - Google Patents

Replacement tool

Info

Publication number
JPS61214939A
JPS61214939A JP5334185A JP5334185A JPS61214939A JP S61214939 A JPS61214939 A JP S61214939A JP 5334185 A JP5334185 A JP 5334185A JP 5334185 A JP5334185 A JP 5334185A JP S61214939 A JPS61214939 A JP S61214939A
Authority
JP
Japan
Prior art keywords
holder
draw
hole
shank
balls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5334185A
Other languages
Japanese (ja)
Other versions
JPH0479763B2 (en
Inventor
Sadao Kojima
小島　貞夫
Hitoshi Abe
阿部　▲ひ▼俊
Fumio Ishizaki
文男 石崎
Mutsumi Otani
大谷　睦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyoritsu Seiki Corp
Hitachi Seiki Co Ltd
Original Assignee
Kyoritsu Seiki Corp
Hitachi Seiki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyoritsu Seiki Corp, Hitachi Seiki Co Ltd filed Critical Kyoritsu Seiki Corp
Priority to JP5334185A priority Critical patent/JPS61214939A/en
Priority to US06/751,829 priority patent/US4680999A/en
Priority to GB08517245A priority patent/GB2163379B/en
Priority to DE19853524739 priority patent/DE3524739A1/en
Publication of JPS61214939A publication Critical patent/JPS61214939A/en
Publication of JPH0479763B2 publication Critical patent/JPH0479763B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
    • B23B31/26—Chucks characterised by features relating primarily to remote control of the gripping means using mechanical transmission through the working-spindle
    • B23B31/261—Chucks characterised by features relating primarily to remote control of the gripping means using mechanical transmission through the working-spindle clamping the end of the toolholder shank
    • B23B31/263—Chucks characterised by features relating primarily to remote control of the gripping means using mechanical transmission through the working-spindle clamping the end of the toolholder shank by means of balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/022—Balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
    • B23B2270/20—Internally located features, machining or gripping of internal surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Gripping On Spindles (AREA)

Abstract

PURPOSE:To reduce the overall length of a holder further surely perform its lock, by providing a cylindrical member, having a through hole holding locking balls, concentrically with a rod, having a relief groove of the balls, in a hole part of the holder and extending and retracting the member and the rod respectively through springs. CONSTITUTION:If piston rods 61a, 62a press leftward the first resilient member 30 by a stopper member 28 and the second resilient member 31 by a bolt 19, a holder,loosening balls 23 to be dropped into a relief groove 24, is unlocked. If both pistons are contracted, a draw holder 26 and a draw rod 20 are pulled rightward by the resilient members 30, 31, and the holder, pressing the balls 23 in the external diameter direction by a large contour part 17 and rightward by the internal surface wall of a through hole 27 while almost horizontally pressing an engaging groove 53, is locked. Here the holder, enabling a shank 51 to be thinly formed with weak force in the radial direction and well closely attaching the shank to an internal surface while uniformly adapting the balls 23 with a play in a hole part 52, can be surely locked even if the length is reduced.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明は、例えばタレ７ト旋盤等に於て使用する交換
工具に係わり、更に詳しくは刃物台のスリーブに対して
各種の工具を装着した工具ホルダを着脱容易にすると共
に、タレントヘッドの厚さを薄くするように構成した交
換工具に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a replacement tool used in, for example, a turret lathe, and more specifically to a tool in which various tools are attached to a sleeve of a tool post. The present invention relates to a replacement tool configured to facilitate attachment and detachment of a holder and to reduce the thickness of a talent head.

〔従来技術〕[Prior art]

一般に、タレ７ト旋盤等の各種工作機械の刃物台等に、
各種の工具を装着した工具ホルダを取り付ける場合の条
件としては、その取り付けが簡単に行えることに加えて
、刃物台のスリーブに対する工具ホルダの取付は状態を
良好にすることであり、この取付は状態の良否がワーク
の加工精度に重大な影響を及ぼすものである。Generally, it is used for tool rests of various machine tools such as turret lathes, etc.
When installing a tool holder with various tools attached, in addition to the installation being easy, the installation of the tool holder to the sleeve of the tool post must be in good condition; The quality of the workpiece has a significant influence on the machining accuracy of the workpiece.

ところで、従来の交換工具としては、例えば実願昭５８
−１１０３０３号公報（出願人・ケンナメタル）等に開
示されているように、機台に装着されたスリーブの嵌合
孔に対し、各種の工具が取付けられた工具ホルダのシャ
ンクを挿入し、前記スリーブの嵌合孔に形成された係合
溝に上記シャンクの内部に設けられた複数個のロック用
ボールを押し拡げて係合させ、該ボールをスリーブの径
方向に押圧することによってロックさせるようにした交
換工具が提案されている。By the way, as a conventional exchange tool, for example,
As disclosed in Publication No. 110303 (applicant: Kennametal), etc., the shank of a tool holder on which various tools are attached is inserted into the fitting hole of the sleeve attached to the machine base, and the sleeve A plurality of locking balls provided inside the shank are pushed apart and engaged with the engagement groove formed in the fitting hole of the sleeve, and the sleeve is locked by pressing the balls in the radial direction. A replacement tool has been proposed.

しかしながら、上記従来の交換工具にあっては、複数個
のボールを工具ホルダの溝にスリーブの直径方向に押圧
させた状態でロックさせる形式のものである為、工具ホ
ルダをスリーブの長手方向に対して引張力を作用させた
としても、その推力は垂直方向（スリーブの直径方向）
の分力となってしまい、従って、スリーブの長手方向に
対して充分に引張力を作用させてロックできないと言う
問題があり、また従来の交換工具では、工具をアンロッ
クする時、工具テーバシャンクの環状溝からボールを完
全に逃がすためドローロッドのストロークを大きく取ら
なければならず、またドローロッドを引っ張る強力なば
ねの撓み代も大きくなるため、ばねの厚さが長くなり、
タレットフランジの厚みが大きくなった。However, in the above-mentioned conventional exchange tools, multiple balls are pressed against the groove of the tool holder in the diametrical direction of the sleeve and locked, so the tool holder is not aligned in the longitudinal direction of the sleeve. Even if a tensile force is applied to the sleeve, the thrust is in the vertical direction (diameter direction of the sleeve).
Therefore, there is a problem in that it is not possible to lock the sleeve by applying a sufficient tensile force in the longitudinal direction of the sleeve.Furthermore, with conventional exchange tools, when unlocking the tool, the tool taber shank In order to completely release the ball from the annular groove, the stroke of the draw rod must be increased, and the deflection of the strong spring that pulls the draw rod also becomes large, so the thickness of the spring becomes longer.
The thickness of the turret flange has been increased.

更に、従来の交換工具の場合には、スリーブの嵌合部と
工具ホルダのシャンク部分とに誤差があった場合には、
複数個のロック用のボールが嵌合部の内壁面に均等に当
らないと言う問題があった。Furthermore, in the case of conventional replacement tools, if there is an error between the fitting part of the sleeve and the shank part of the tool holder,
There was a problem in that the plurality of locking balls did not evenly hit the inner wall surface of the fitting part.

〔発明の目的〕[Purpose of the invention]

この発明は、かかる従来の問題点に着目して案出された
もので、その目的とするところは、工具ホルダとスリー
ブとの嵌合部分に加工誤差や摩耗等によって間隙が生じ
たとしても、ロック用のボールの均等な押圧力により、
前記間隙を有効に吸収して常に確実なロック状態を得る
ことが出来、重切削を行う場合にも工具ホルダの自動振
動等を防止して切削性及び加工精度を著しく向上させる
ことが出来、更にテーバスリーブに対して工具ホルダを
簡単に着脱出来ると共に全長を短くしてコンパクトに構
成することが出来る交換工具を提供するものである。This invention was devised by focusing on such conventional problems, and its purpose is to prevent gaps from forming at the fitting portion between the tool holder and the sleeve due to machining errors, wear, etc. Due to the uniform pressing force of the locking balls,
It is possible to effectively absorb the above-mentioned gap and always obtain a reliable locking state, and even when performing heavy cutting, it is possible to prevent automatic vibration of the tool holder and to significantly improve cutting performance and machining accuracy. To provide a replacement tool in which a tool holder can be easily attached and detached from a Taber sleeve, and the overall length can be shortened to make it compact.

〔発明の構成〕[Structure of the invention]

この発明は、上記目的を達成するために、シャンクの挿
入端面に係合溝を備えた穴部を形成して成る工具ホルダ
と、前記シャンクを着脱自在に嵌合させる嵌合孔を備え
たタレットと、前記嵌合孔中心部に挿通され、かつ前記
係合溝と係脱するロック用のボールを備えた係脱手段と
から成り、前記係脱手段を、前記テーパスリーブの嵌合
孔中心部に軸線方向に摺動自在に内装され、かつ前記係
合溝と係合するボールを出没自在に収容する凹部を外周
面に形成したドローロッドと、このドローロッドの外周
面とシャンクの穴部内壁面との間に軸方向に摺動自在に
内装され、かつ前記ロック用のボールを出没させる貫通
孔を備えたドローホルダと、前記テーパスリーブの端面
とドローホルダの後端側に固定されたストッパー部材と
の間にボールを常時工具ホルダの係合溝内に係合させる
ように付勢する第１弾性部材と、更に前記ドローホルダ
の内壁面とドローロッドの後端に設けたストッパリング
との間に介設させた解除用の第２弾性部材とで構成し、
前記ドローロッドの後端を押圧することによって工具ホ
ルダのシャンクをテーパスリーブの嵌合孔から解除しう
るように構成したことを要旨とするものである。In order to achieve the above-mentioned object, the present invention includes a tool holder comprising a hole with an engaging groove formed in the insertion end surface of the shank, and a turret comprising a fitting hole into which the shank is detachably fitted. and a locking ball that is inserted into the center of the fitting hole and engages and disengages with the engagement groove, and the locking and disengaging means is inserted into the center of the fitting hole of the tapered sleeve. a draw rod that is slidably slidable in the axial direction and has a recess formed on its outer circumferential surface to accommodate a ball that engages with the engagement groove so as to be freely retractable; and the outer circumferential surface of the draw rod and the inner wall surface of the hole of the shank. a draw holder that is slidable in the axial direction between the draw holder and has a through hole through which the locking ball enters and exits; and a stopper member that is fixed to the end surface of the tapered sleeve and the rear end side of the draw holder. interposed between a first elastic member that constantly urges the ball to engage in the engagement groove of the tool holder, and a stopper ring provided on the inner wall surface of the draw holder and the rear end of the draw rod. a second elastic member for release,
The gist of the present invention is that the shank of the tool holder can be released from the fitting hole of the tapered sleeve by pressing the rear end of the draw rod.

〔発明の実施例〕[Embodiments of the invention]

以下、添付図面に基づいて、この発明の詳細な説明する
。Hereinafter, the present invention will be described in detail based on the accompanying drawings.

第１図は、この発明に係る交換工具１をタレット旋盤２
のタレット３の刃物台４に取付けられた状態を示し、Ｗ
は被加工物であるワーク、５はワークＷをクランプする
チャック、６は交換工具１の工具Ｘを着脱操作するシリ
ンダを示している。FIG. 1 shows an exchange tool 1 according to the present invention on a turret lathe 2.
W is shown attached to the tool post 4 of the turret 3.
5 is a chuck for clamping the workpiece W, and 6 is a cylinder for attaching and detaching the tool X of the replacement tool 1.

前記交換工具１は、第２図及び第３図に示すように、中
空筒状のタレットフランジ１０がタレット３の上に固定
され、このタレットフランジ１０の先端側には、テーパ
状の嵌合孔１１を備えたテーパスリーブＩ２の基端部が
ポル）１３を介して固定されている。このテーバスリー
ブ１２の嵌合孔１１には、バイト等の通常の工具Ｘを取
付けた工具ホルダ５０のテーパシャク５１が着脱自在に
嵌合される。前記、テーバシャク５１の挿入端面５１ａ
の中心部には、所定の深さの穴部５２が形成され、この
穴部５２の内周面には環状の係合溝５３が形成されてい
る。As shown in FIGS. 2 and 3, in the replacement tool 1, a hollow cylindrical turret flange 10 is fixed onto the turret 3, and a tapered fitting hole is provided at the tip side of the turret flange 10. The proximal end of the tapered sleeve I2 with 11 is fixed via a pin 13. A taper shaft 51 of a tool holder 50 to which a normal tool X such as a cutting tool is attached is removably fitted into the fitting hole 11 of the Taper sleeve 12. The insertion end surface 51a of the taber shaft 51
A hole 52 having a predetermined depth is formed in the center of the hole 52, and an annular engagement groove 53 is formed in the inner peripheral surface of the hole 52.

また前記テーバスリーブ１２の先端部には、工具ホルダ
５０のヘッド部５４の後端面を当接させるフランジ部１
４が形成され、このフランジ部１４には第３図に示すよ
うに、工具ホルダ５０を位置決めするブロック１５がボ
ルト１６を介して固定されている。前記、タレットフラ
ンジ１０及びテーバスリーブ１２の嵌合孔中心部には、
テーバスリーブ１２の嵌合孔１１に対して工具ホルダ５
０を係脱させる係脱手段４０が設けられている。Further, the tip of the Taber sleeve 12 has a flange portion 1 that abuts the rear end surface of the head portion 54 of the tool holder 50.
4 is formed, and a block 15 for positioning a tool holder 50 is fixed to this flange portion 14 via bolts 16, as shown in FIG. At the center of the fitting hole of the turret flange 10 and the Taber sleeve 12,
The tool holder 5 is attached to the fitting hole 11 of the Taber sleeve 12.
0 is provided.

この係脱手段４０は、先端側に大径部１７を備え、かつ
後端側にストッパリング１８をボルト１９を介して固定
したドローロッド２０が摺動自在に内装されている。The engaging/disengaging means 40 has a large diameter portion 17 on the front end side, and a draw rod 20 having a stopper ring 18 fixed thereto via a bolt 19 on the rear end side is slidably housed inside.

なお、２１は刃物台４の後端部で、切粉等のゴミ類が前
記中空部内に侵入するのを防止するようにしたものであ
る。Note that 21 is a rear end portion of the tool rest 4, which is designed to prevent dust such as chips from entering the hollow portion.

前記ドローロッド２０の大径部１７の外周面には、複数
個（この実施例では３個）のロック用のボール２３を出
没自在に収容する断面半円弧状の環状凹部２４（逃し溝
）が形成されている。ドローロッド２０の大径部１７の
外周面と、前記テーバスリーブ１２の嵌合孔１１及びテ
ーバシャク５１の挿入端面中心部に形成された穴部５２
の内壁面との間には、摺動自在な中空筒状のドローホル
ダ２６が摺動自在に介装されている。このドローホルダ
２６の先端部には、ロック用のボール２３が出没する貫
通孔２７が複数個所（この実施例では３個所）に形成さ
れ、また後端部には、ナツト等のストッパ部材２８が固
定されている。On the outer peripheral surface of the large diameter portion 17 of the draw rod 20, there is an annular recess 24 (relief groove) having a semicircular arc cross section and housing a plurality of (three in this embodiment) locking balls 23 so as to be freely retractable. It is formed. A hole 52 formed in the outer peripheral surface of the large diameter portion 17 of the draw rod 20, the fitting hole 11 of the Taber sleeve 12, and the center of the insertion end surface of the Taber shaft 51.
A slidable hollow cylindrical draw holder 26 is slidably interposed between the inner wall surface of the draw holder 26 and the inner wall surface of the draw holder 26 . The draw holder 26 has a plurality of through holes 27 (three in this embodiment) formed at the tip of the draw holder 26 through which the locking balls 23 enter and exit, and a stopper member 28 such as a nut is fixed at the rear end. has been done.

前記、テーバスリーブ１２の後端には、ドローホルダ２
６の後端位置を規制する突起２９が一体的に設けられて
いる。またテーバスリーブ１２の後端面１２ａと、前記
ドローホルダ２６の後端部に設けられたストッパ部材２
８との間には、前記ドローホルダ２６を常時第２図の右
方向（矢印方向）に付勢する皿バネ等の第１弾性部材３
０が介設されている。A draw holder 2 is provided at the rear end of the Taber sleeve 12.
A protrusion 29 for regulating the position of the rear end of 6 is integrally provided. Further, a stopper member 2 provided at the rear end surface 12a of the Taber sleeve 12 and the rear end portion of the draw holder 26
8, there is a first elastic member 3 such as a disc spring that always biases the draw holder 26 in the right direction (in the direction of the arrow) in FIG.
0 is inserted.

またドローホルダ２６の中空部内に形成された段部２６
ａと、前記ドローロッド２０の後端側に設けたストッパ
リング１８との間には、ドローロッド２０を常時第２図
の右方向に付勢し、かつ第１弾性部材３０の弾性力より
も弾性力が極めて小さいコイルスプリング等の第２弾性
部材３１が介設されている。Also, a stepped portion 26 formed within the hollow portion of the draw holder 26
a and a stopper ring 18 provided on the rear end side of the draw rod 20, which constantly urges the draw rod 20 in the right direction in FIG. A second elastic member 31 such as a coil spring with extremely small elastic force is interposed.

また、前記交換工具１の工具Ｘを着脱操作するシリンダ
６は、第４図に示すように中空筒状の第１ピストン６１
と、第２ピストン６２とを備えた多段式油圧シリンダで
、ケーシング６３内に第１ピストン６１を摺動自在に内
装した第１シリンダ室６４と、第２ピストン６２を内装
した第１シリンダ室６４とが区画形成されている。Further, the cylinder 6 for attaching and detaching the tool X of the replacement tool 1 has a hollow cylindrical first piston 61 as shown in FIG.
and a second piston 62; a first cylinder chamber 64 in which the first piston 61 is slidably housed within a casing 63; and a first cylinder chamber 64 in which the second piston 62 is housed. The area is divided into sections.

そして、第１ピストン６１のピストンロッド６１ａ内に
、第２ピストン６２のピストンロフト６２ａを摺動自在
に嵌挿゛させ、それぞれのピストンロッド６１ａ、６２
ａが順次出没出来るように構成されている。Then, the piston loft 62a of the second piston 62 is slidably inserted into the piston rod 61a of the first piston 61, and the respective piston rods 61a, 62 are inserted.
It is configured so that characters a can appear and appear in sequence.

なお、６６ａ、６６ｂ及び６７ａ、６７ｂはそれぞれ第
１シリンダ室６４と、第２シリンダ室６５とに作動圧流
体を給排させる給排口である。Note that 66a, 66b and 67a, 67b are supply/discharge ports for supplying and discharging working pressure fluid to and from the first cylinder chamber 64 and the second cylinder chamber 65, respectively.

次に、上記のような構成から成るこの発明の作用につい
て説明する。Next, the operation of the present invention constructed as described above will be explained.

なお、第２図に於ける工具ホルダ５０の中心線下部は、
工具ホルダ５０とテーバスリーブ１２とのアンロック状
態を示し、また中心線上部はロック状態を示している。Note that the lower part of the center line of the tool holder 50 in FIG.
The tool holder 50 and the Taber sleeve 12 are shown in an unlocked state, and the upper part of the center line shows a locked state.

まず、中心線下部のアンロック状態から中心線上部のロ
ック状態にするには、シリンダ６の給排口６６ｂに作動
圧流体を供給して第１ピストン６１を作動させてピスト
ンロッド６１ａをストッパ部材２日に当接させると共に
、第１弾性部材３０を圧縮させて第２図の左方向へ押圧
する（約１ｍｍ程度移動させる。）。First, in order to change from the unlocked state below the center line to the locked state above the center line, actuating pressure fluid is supplied to the supply/discharge port 66b of the cylinder 6 to operate the first piston 61 and move the piston rod 61a to the stopper member. At the same time, the first elastic member 30 is compressed and pressed to the left in FIG. 2 (moved by about 1 mm).

すると、第１弾性部材３０の弾性力により、係合溝５３
の後端面側に押しつけられていたボール２３が弛み、次
で給排口６７ｂに作動圧流体を供給して、第２ピストン
６２を伸張作動させ、ピストンロッド６２ａでドローロ
ッド２０と一体的に保持されたボルト１９を第２弾性部
材３１の弾性力に抗して第２図の左方向へ押圧する。こ
れにより、ロック状態が解除されているボール２３は、
大径部１７の半円弧状の環状凹部２４内に落ち込んで、
工具ホルダ５０は完全にロック状態が解除された状態と
な・るものである。Then, due to the elastic force of the first elastic member 30, the engagement groove 53
The ball 23 that had been pressed against the rear end surface is loosened, and then working pressure fluid is supplied to the supply/discharge port 67b to extend and operate the second piston 62, which is held integrally with the draw rod 20 by the piston rod 62a. Then, the bolt 19 is pushed toward the left in FIG. 2 against the elastic force of the second elastic member 31. As a result, the ball 23 whose locked state is released is
Falling into the semicircular arc-shaped annular recess 24 of the large diameter portion 17,
The tool holder 50 is in a completely unlocked state.

なお、上記アンロツタ操作の時には、第２ピストン６２
は、第１弾性部材３０に比べて第２弾性部材３１の弾性
力が極めて弱いものであるため、大きな押圧力を必要と
しないものである。Note that during the above-mentioned unrotator operation, the second piston 62
Since the elastic force of the second elastic member 31 is extremely weak compared to the first elastic member 30, a large pressing force is not required.

次に、このようなアンロック状態から、工具ホルダ５０
をロック状態にするには、先ず工具ホルダ５０のテーパ
シャク５１をテーバホルダ１２の嵌合孔１１に嵌合させ
た状態で、ヘッド部５４の後端面をテーバスリーブ１２
のフランジ部１４に向けて挿入する。そして前記シリン
ダ６の第１ピストン６１と、第２ピストン６２とを収縮
させると、ドローホルダ２６及びドローロッド２０は、
第１弾性部材３０．第２弾性部材３１０弾性力により軸
線方向（第２図の右方向）に引っ張られる。これと同時
に、前記環状凹部２４に収納されていたボール２３は断
面半円弧状の環状凹部２４から押出されてドローホルダ
２６の貫通孔２７とテーバシャンク５１の係合溝５３に
入り込む。Next, from such an unlocked state, the tool holder 50
To lock the head part 54, first fit the taper shank 51 of the tool holder 50 into the fitting hole 11 of the Taber holder 12, and then insert the rear end surface of the head part 54 into the Taber sleeve 12.
Insert it toward the flange portion 14 of. Then, when the first piston 61 and the second piston 62 of the cylinder 6 are contracted, the draw holder 26 and the draw rod 20 are
First elastic member 30. The second elastic member 310 is pulled in the axial direction (rightward in FIG. 2) by the elastic force. At the same time, the ball 23 housed in the annular recess 24 is pushed out from the annular recess 24 having a semicircular arc cross section and enters the through hole 27 of the draw holder 26 and the engagement groove 53 of the Taber shank 51.

ドローホルダ２６及びドローロッド２０が、第１弾性部
材３０．第２弾性部材３１の弾性力により同一方向に引
っ張られると、前記ドローホルダ２６の貫通孔２７と、
テーバシャク５１の係合溝５３から押出されたボール２
３は、第５図に示すように、先ずドローホルダ２６の貫
通孔２７の内壁面のＡ点でボール２３の球芯部を押圧さ
れ、次いでドローロッド２０の大径部１７の外周のＢ点
に当接して押圧され、そしてボール２３は係合溝５３の
０点において角度θの略水平方向の推力を受けてロック
される。The draw holder 26 and the draw rod 20 are connected to the first elastic member 30. When pulled in the same direction by the elastic force of the second elastic member 31, the through hole 27 of the draw holder 26,
Ball 2 pushed out from engagement groove 53 of Tabershak 51
3, as shown in FIG. 5, the spherical core of the ball 23 is first pressed at point A on the inner wall surface of the through hole 27 of the draw holder 26, and then the spherical core portion of the ball 23 is pressed at point B on the outer periphery of the large diameter portion 17 of the draw rod 20. The balls 23 are brought into contact with each other and pressed, and the balls 23 are locked at the zero point of the engagement groove 53 by receiving a substantially horizontal thrust at an angle θ.

即ち、ボール２３を押圧するＡ点は、ボール２３の球芯
０と略同じ位置にて水平方向に押圧するため、′タレッ
トフランジ１０の径方向に押圧する分力Ｆは、従来のも
のよりも極めて小さくなり、その代り上記のように角度
θが極めて小さいことからボール２３を水平方向（ドロ
ーロフト２０の軸線方向）に作用する推力が大きくなっ
て、工具ホルダ５０の軸方向に引っ張る力が大きくなる
ものである。That is, since the point A that presses the ball 23 is horizontally pressed at approximately the same position as the ball center 0 of the ball 23, the component force F that presses the turret flange 10 in the radial direction is greater than that of the conventional one. However, since the angle θ is extremely small as described above, the thrust force that acts on the ball 23 in the horizontal direction (in the axial direction of the draw loft 20) becomes large, and the force that pulls the tool holder 50 in the axial direction becomes large. It is what it is.

係合溝５３の形成されたテーパシャク５１の先端部分は
、前記ドローホルダ２６及びドローロッド２０の引張力
によりボール２３を介してテーパスリープ１２内壁面側
に膨張して密着し前記テーバスリーブ１２のフランジ部
１４と工具ホルダ５０のヘッド部５４の後端との突当て
に加えて更に強固に膨張支持され、工具ホルダ５０がグ
ラ付いたりする自動振動は少なくなる。The tip portion of the tapered shaft 51 in which the engagement groove 53 is formed expands and comes into close contact with the inner wall surface of the tapered sleeve 12 through the ball 23 due to the tensile force of the draw holder 26 and the draw rod 20, and the flange portion of the taper sleeve 12 is expanded. 14 and the rear end of the head portion 54 of the tool holder 50, the tool holder 50 is expanded and supported more firmly, and automatic vibrations such as wobbling of the tool holder 50 are reduced.

またボール２３は、ドローロッド２０の環状凹部２４に
嵌合されたボール２３を介してドローホルダ２６の貫通
孔２７により引っ張られてテーパシャク５１の係合溝５
３と係合するが、この時、ドローロッド２０の大径部１
７の外周面と、前記テーバスリーブ１２の嵌合孔１１及
びテーバシャンク５１の挿入端面中心部に形成された穴
部５２との間には、所謂遊びがあるので、ドローホルダ
２６の浮動により常に複数個のボール２３は係合溝５３
と均等に当接し、工具ホルダ５０を軸方向へ均等の力で
引っ張ることが出来る。Further, the ball 23 is pulled by the through hole 27 of the draw holder 26 via the ball 23 fitted in the annular recess 24 of the draw rod 20, and is pulled into the engagement groove 5 of the taper shaft 51.
3, but at this time, the large diameter portion 1 of the draw rod 20
Since there is so-called play between the outer circumferential surface of the draw holder 7 and the hole 52 formed in the fitting hole 11 of the Taber sleeve 12 and the center of the insertion end surface of the Taber shank 51, the floating of the draw holder 26 always causes a plurality of The ball 23 is in the engagement groove 53
The tool holder 50 can be pulled in the axial direction with an even force.

更に、前記タレットフランジ１０の径方向の分力Ｆを小
さく出来るので、テーパシャク５１の先端の肉厚を薄く
出来、この結果ボール２３を介して押圧されるテーパシ
ャク５１の先端部分の膨張が容易になる上、剛性が必要
とされるドローホルダ２６の肉厚を厚くすることも可能
である。Furthermore, since the component force F in the radial direction of the turret flange 10 can be reduced, the wall thickness of the tip of the taper shank 51 can be made thinner, and as a result, the tip of the taper shank 51 that is pressed via the ball 23 can easily expand. Moreover, it is also possible to increase the thickness of the draw holder 26, which requires rigidity.

また、この実施例ではテーパシャク５１を有する工具ホ
ルダ５０について説明したが、ストレートシャンクでも
実施することは可能であり、またこの工具ホルダ５０は
従来の工具Ｘを取付けることも可能であり、広い範囲に
渡り使用することが出来る。Further, in this embodiment, the tool holder 50 having a tapered shank 51 has been described, but it is also possible to implement the tool holder 50 with a straight shank, and this tool holder 50 can also be used with a conventional tool Can be used across the board.

〔発明の効果〕〔Effect of the invention〕

この発明は上記のように、シャンクの挿入端面に係合溝
を備えた穴部を形成して成る工具ホルダと、前記シャン
クを着脱自在に嵌合させる嵌合孔を備えたタレットと、
前記嵌合孔中心部に挿通され、かつ前記係合溝と係脱す
るロック用のボールを備えた係脱手段とから成り、前記
係脱手段を、前記テーパスリーブの嵌合孔中心部に軸線
方向に摺動自在に内装され、かつ前記係合溝と係合する
ボールを出没自在に収容する凹部を外周面に形成したド
ローロッドと、このドローロッドの外周面とシャンクの
穴部内壁面との間に軸方向に摺動自在に内装され、かつ
前記ロック用のボールを出没させる貫通孔を備えたドロ
ーホルダと、前記テーパスリーブの端面とドローホルダ
の後端側に固定されたストッパー部材との間にボールを
常時工具ホルダの係合溝内に係合させるように付勢する
第１弾性部材と、更に前記ドローホルダの内壁面とドロ
ーロッドの後端に設けたストッパリングとの間に介設さ
せた解除用の第２弾性部材とで構成し、前記ドローロッ
ドの後端を押圧することによって工具ホルダのシャンク
をテーパスリーブの嵌合孔から解除しうるように構成し
たため、特にテーパスリーブに対して工具ホルダを解除
するときには、大きな操作力を必要とせずに簡単に解除
することが出来、強力な第１弾性部材の撓み代を小さく
出来、スプリングの数を減らすことが出来るのでタレッ
トフランジ１０の厚みを小さくすることが出来る。また
第１弾性部材と第２弾性部材を並列に配設することによ
って、交換工具全長を短く出来るばかりでなく、シリン
ダストロークも短くなり全体的にコンパクトに構成する
ことが出来る効果がある。また、工具ホルダとスリーブ
との嵌合部分に加工誤差や摩耗等によって間隙が生じた
としても、ロック用のボールの均等な押圧力により、前
記間隙をを効に吸収して常に確実なロック状態を得るこ
とが出来、重切削を行う場合にも工具ホルダの自動振動
等を防止して切削性及び加工精度を著しく向上させるこ
とが出来る効果がある。As described above, the present invention includes: a tool holder having a hole with an engaging groove formed in the insertion end surface of the shank; a turret having a fitting hole into which the shank is detachably fitted;
a locking and disengaging means that is inserted into the center of the fitting hole and is provided with a locking ball that engages and disengages with the engagement groove; A draw rod having a recess formed on its outer circumferential surface to accommodate a ball that is slidably slidable in a direction and that engages with the engagement groove in a retractable manner; between a draw holder that is slidably slidable in the axial direction between the draw holders and has a through hole through which the locking ball enters and exits, and a stopper member that is fixed to the end surface of the tapered sleeve and the rear end side of the draw holder. A first elastic member that constantly urges the ball to engage in the engagement groove of the tool holder, and a stopper ring provided at the inner wall surface of the draw holder and the rear end of the draw rod. The shank of the tool holder can be released from the fitting hole of the tapered sleeve by pressing the rear end of the draw rod. When releasing the holder, the holder can be released easily without requiring a large operating force, the deflection of the strong first elastic member can be reduced, and the number of springs can be reduced, so the thickness of the turret flange 10 can be reduced. It can be made smaller. Moreover, by arranging the first elastic member and the second elastic member in parallel, not only the overall length of the replacement tool can be shortened, but also the cylinder stroke can be shortened, resulting in an effect that the overall structure can be made compact. In addition, even if a gap occurs at the fitting part between the tool holder and the sleeve due to machining errors or wear, the even pressing force of the locking balls will effectively absorb the gap and always maintain a secure locked state. This has the effect of preventing automatic vibration of the tool holder and significantly improving cutting performance and machining accuracy even when heavy cutting is performed.

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

第１図はこの発明をタレ・レト旋盤に実施した全体斜視
図、第２図は交換工具の一部断面図、第３図はテーパス
リーブの側面図、第４図はシリンダの拡大断面図、第５
図はロック部分の説明図である。 ３・・・タレット、１１・・・嵌合孔、１８・・・スト
ッパリング、２０・・・ドローロフト、２３・・・ボー
ル、２４・・・凹部、２６・・・ドローホルダ、２８・
・・ストッパ部材、４０・・・係脱手段、 ５０・・・工具ホルダ、５１・・・シャンク、５１ａ・
・・　　。 挿入端面、５２・・・穴部、５３・・・係合溝。Fig. 1 is an overall perspective view of the present invention applied to a saucer/reto lathe, Fig. 2 is a partial sectional view of a replacement tool, Fig. 3 is a side view of a tapered sleeve, and Fig. 4 is an enlarged sectional view of a cylinder. Fifth
The figure is an explanatory diagram of the lock portion. 3... Turret, 11... Fitting hole, 18... Stopper ring, 20... Draw loft, 23... Ball, 24... Recess, 26... Draw holder, 28...
...stopper member, 40...engaging/disengaging means, 50...tool holder, 51...shank, 51a...
・・・ . Insertion end surface, 52...hole, 53...engaging groove.

Claims (1)

【特許請求の範囲】[Claims] シャンクの挿入端面に係合溝を備えた穴部を形成して成
る工具ホルダと、前記シャンクを着脱自在に嵌合させる
嵌合孔を備えたタレットと、前記嵌合孔中心部に挿通さ
れ、かつ前記係合溝と係脱するロック用のボールを備え
た係脱手段とから成り、前記係脱手段を、前記テーパス
リーブの嵌合孔中心部に軸線方向に摺動自在に内装され
、かつ前記係合溝と係合するボールを出没自在に収容す
る凹部を外周面に形成したドローロッドと、このドロー
ロッドの外周面とシャンクの穴部内壁面との間に軸方向
に摺動自在に内装され、かつ前記ロック用のボールを出
没させる貫通孔を備えたドローホルダと、前記テーパス
リーブの端面とドローホルダの後端側に固定されたスト
ッパー部材との間にボールを常時工具ホルダの係合溝内
に係合させるように付勢する第１弾性部材と、更に前記
ドローホルダの内壁面とドローロッドの後端に設けたス
トッパリングとの間に介設させた解除用の第２弾性部材
とで構成し、前記ドローロッドの後端を押圧することに
よって工具ホルダのシャンクをテーパスリーブの嵌合孔
から解除しうるように構成したことを特徴とする交換工
具。a tool holder having a hole with an engagement groove formed in the insertion end surface of the shank; a turret having a fitting hole into which the shank is detachably fitted; and a turret inserted into the center of the fitting hole; and a locking and disengaging means provided with a locking ball that engages and disengages from the engagement groove, and the engaging and disengaging means is installed inside the center of the fitting hole of the tapered sleeve so as to be freely slidable in the axial direction, and A draw rod having a recess formed on its outer circumferential surface to accommodate a ball that engages with the engagement groove so as to be freely protrusive and retractable, and an interior that is slidable in the axial direction between the outer circumferential surface of the draw rod and the inner wall surface of the hole of the shank. The ball is constantly inserted into the engagement groove of the tool holder between a draw holder having a through hole through which the locking ball enters and exits, and a stopper member fixed to the end surface of the tapered sleeve and the rear end of the draw holder. A first elastic member biased to engage the draw rod, and a second elastic member for release disposed between the inner wall surface of the draw holder and a stopper ring provided at the rear end of the draw rod. A replacement tool, characterized in that the shank of the tool holder can be released from the fitting hole of the tapered sleeve by pressing the rear end of the draw rod.
JP5334185A 1984-07-11 1985-03-19 Replacement tool Granted JPS61214939A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP5334185A JPS61214939A (en) 1985-03-19 1985-03-19 Replacement tool
US06/751,829 US4680999A (en) 1984-07-11 1985-07-05 Replaceable tool
GB08517245A GB2163379B (en) 1984-07-11 1985-07-08 Replaceable tool mounting for a machine tool
DE19853524739 DE3524739A1 (en) 1984-07-11 1985-07-11 INTERCHANGEABLE TOOL HOLDER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5334185A JPS61214939A (en) 1985-03-19 1985-03-19 Replacement tool

Publications (2)

Publication Number Publication Date
JPS61214939A true JPS61214939A (en) 1986-09-24
JPH0479763B2 JPH0479763B2 (en) 1992-12-16

Family

ID=12940060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5334185A Granted JPS61214939A (en) 1984-07-11 1985-03-19 Replacement tool

Country Status (1)

Country Link
JP (1) JPS61214939A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61187607U (en) * 1985-05-16 1986-11-22
JPS63251105A (en) * 1987-01-27 1988-10-18 ケンナメタル　インコーポレイテッド Tool holder assembly
JPS6487107A (en) * 1987-01-27 1989-03-31 Kennametal Inc Tool holder
JPH03500511A (en) * 1987-01-27 1991-02-07 ケンナメタル インコーポレイテッド Tool holder and how to releasably attach the tool holder
JPH055315U (en) * 1991-07-12 1993-01-26 共立精機株式会社 Replacement tool
JPH059807U (en) * 1991-07-18 1993-02-09 共立精機株式会社 Tool changer
JPH0673762B2 (en) * 1988-08-30 1994-09-21 ケンナメタル インコーポレイテッド Automatic tightening device for holding the bite holder
EP0734804A1 (en) * 1995-03-29 1996-10-02 Tsubakimoto Chain Co. Tool holding device
JP2008110456A (en) * 2006-10-31 2008-05-15 Yukiwa Seiko Inc Holding device
WO2011053619A2 (en) * 2009-11-02 2011-05-05 Kennametal Inc. Toolholder coupling for high pressure coolant
JP2020151808A (en) * 2019-03-20 2020-09-24 Dmg森精機株式会社 Tool holder and machine tool

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5086777A (en) * 1973-12-04 1975-07-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5086777A (en) * 1973-12-04 1975-07-12

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0351050Y2 (en) * 1985-05-16 1991-10-31
JPS61187607U (en) * 1985-05-16 1986-11-22
JPS63251105A (en) * 1987-01-27 1988-10-18 ケンナメタル　インコーポレイテッド Tool holder assembly
JPS6487107A (en) * 1987-01-27 1989-03-31 Kennametal Inc Tool holder
JPH03500511A (en) * 1987-01-27 1991-02-07 ケンナメタル インコーポレイテッド Tool holder and how to releasably attach the tool holder
JPH0375284B2 (en) * 1987-01-27 1991-11-29
JPH0448561B2 (en) * 1987-01-27 1992-08-07 Kennametal Inc
JPH0673762B2 (en) * 1988-08-30 1994-09-21 ケンナメタル インコーポレイテッド Automatic tightening device for holding the bite holder
JPH055315U (en) * 1991-07-12 1993-01-26 共立精機株式会社 Replacement tool
JPH059807U (en) * 1991-07-18 1993-02-09 共立精機株式会社 Tool changer
EP0734804A1 (en) * 1995-03-29 1996-10-02 Tsubakimoto Chain Co. Tool holding device
US6003416A (en) * 1995-03-29 1999-12-21 Tsubakimoto Chain Co. Tool holding device
JP2008110456A (en) * 2006-10-31 2008-05-15 Yukiwa Seiko Inc Holding device
WO2011053619A2 (en) * 2009-11-02 2011-05-05 Kennametal Inc. Toolholder coupling for high pressure coolant
WO2011053619A3 (en) * 2009-11-02 2011-08-18 Kennametal Inc. Toolholder coupling for high pressure coolant
GB2488281A (en) * 2009-11-02 2012-08-22 Kennametal Inc Toolholder coupling for high pressure coolant
US8807880B2 (en) 2009-11-02 2014-08-19 Kennametal Inc. Toolholder coupling for high pressure coolant
JP2020151808A (en) * 2019-03-20 2020-09-24 Dmg森精機株式会社 Tool holder and machine tool

Also Published As

Publication number Publication date
JPH0479763B2 (en) 1992-12-16

Similar Documents

Publication Publication Date Title
US4680999A (en) Replaceable tool
US3498653A (en) Connector device
KR100298065B1 (en) Tool holders and methods for mounting cutting tools in these tool holders
JP4167515B2 (en) Clamp device with clamp chuck
KR100259551B1 (en) Tool unit clamping apparatus having a locking mechanism with increased gripping force
US4840520A (en) Mounting device having a conical shank
JP2003200326A (en) Clamping device
JPH0435297B2 (en)
ITMI952188A1 (en) TOOL HOLDER REMOVABLE FIXABLE TO A SPINDLE OF A MACHINE TOOL
US4228705A (en) Tool holding device
JPS61214939A (en) Replacement tool
JPH08281504A (en) Disconnecting machanism for tool clamp
JPH01140902A (en) Attachment, bite holder and fixture being applied to tapered end face of bite and particularly having tapered shunk of no.7/24 cone
US6375398B1 (en) Tool holder assembly
JPH0144463B2 (en)
JP3934222B2 (en) Tool lock device for machine tools
US4777714A (en) Quick-change mount for chucks
US3347115A (en) Axially adjustable tool holder construction
JPH11347870A (en) Tool holder holding device for tool pot
US5325749A (en) Machine tool having a quick release draw tube and jaw chuck adapter
CN214109581U (en) Self-tensioning type chuck seat
JPH0446685B2 (en)
US2749806A (en) Tool spindle mechanism
JPS6125744A (en) Interchange tool
JP3353694B2 (en) Tool holder mounting device and tool holder temporary holding method

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees