JPH0825124B2 - Oil supply device in tool holder - Google Patents
Oil supply device in tool holderInfo
- Publication number
- JPH0825124B2 JPH0825124B2 JP14785193A JP14785193A JPH0825124B2 JP H0825124 B2 JPH0825124 B2 JP H0825124B2 JP 14785193 A JP14785193 A JP 14785193A JP 14785193 A JP14785193 A JP 14785193A JP H0825124 B2 JPH0825124 B2 JP H0825124B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- rotating
- oil supply
- ring
- sleeve
- 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.)
- Expired - Lifetime
Links
Landscapes
- Auxiliary Devices For Machine Tools (AREA)
- Jigs For Machine Tools (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、切削工具を工作機械の
スピンドルに装着するための工具ホルダーのうち、工作
機械側の送油路からオイルホール付回転切削工具に切削
油を供給する給油装置を備えた工具ホルダーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool holder for mounting a cutting tool on a spindle of a machine tool, and an oil supply device for supplying cutting oil from an oil passage on the machine tool side to a rotary cutting tool with an oil hole. The present invention relates to a tool holder equipped with.
【０００２】[0002]
【従来の技術】オイルホール付き回転切削工具は、オイ
ルホールに供給される切削油を刃先部より注出しつつ切
削を行わせることにより、刃先部の冷却と潤滑を図り、
切削工具の耐用寿命を延ばすと共に仕上げ面を良好にし
得る特徴がある。2. Description of the Related Art A rotary cutting tool with an oil hole cools and lubricates the cutting edge portion by pouring the cutting oil supplied to the oil hole from the cutting edge portion to perform cutting.
It is characterized by extending the useful life of the cutting tool and improving the finished surface.
【０００３】従来のこの種工具ホルダーにおける給油装
置は、回転軸を回転自在に支承する非回転支持部材に、
工作機械側の給油台に着脱可能な後述の油路接続具を一
体的に設け、該油路接続具と非回転支持部材の各給油路
を通って回転軸に設けた工具用供給路に通油し、該供給
路より工具のオイルホールに給油するようにしている。A conventional oil supply device for a tool holder of this type has a non-rotating support member that rotatably supports a rotating shaft.
An oil passage connector, which will be described later, which can be attached and detached is integrally provided on the oil supply table on the machine tool side, and the oil passage connector and the non-rotational support member are connected to the tool supply passage provided on the rotary shaft through the oil supply passages. Oil is supplied from the supply passage to the oil hole of the tool.
【０００４】この際に非回転状態の非回転支持部材と回
転状態の回転軸との相対界面部を横断して給油通路が形
成されるため、その界面部間から漏油するの阻止するた
めに両者間に油密リングを介装するようにしている。At this time, since the oil supply passage is formed across the relative interface between the non-rotating support member in the non-rotating state and the rotating shaft in the rotating state, in order to prevent oil leakage from between the interface portions. An oiltight ring is interposed between the two.
【０００５】ところが長期の使用期間中に、外部から、
または切削油中に混入する切削粉等が上述の相対界面間
から油密リングとこれが回転接触する回転軸の外周面と
の間に噛み込み、油密リングが接触する回転軸の外周面
に切削粉等の摺動摩擦抵抗により窪みが発生して油密リ
ングによる油密性が破壊され、この窪みより切削油が漏
出する事故が発生していた。従ってこの漏油事故を補修
するためには、工具ホルダーの大部分を占める回転軸を
取り替なければならず、非常に高価につくという難点が
あった。However, during a long use period,
Or cutting powder mixed in the cutting oil is caught between the oil-tight ring and the outer peripheral surface of the rotating shaft with which the oil-tight ring makes contact with the oil-tight ring to cut the outer peripheral surface of the rotating shaft with which the oil-tight ring comes into contact. The sliding frictional resistance of powder or the like causes a depression to destroy the oil tightness of the oil tight ring, resulting in an accident in which cutting oil leaks from the depression. Therefore, in order to repair this oil leakage accident, the rotary shaft that occupies most of the tool holder must be replaced, which is very expensive.
【０００６】この難点を阻止するために、本件出願人
は、過去に図８に示すように回転軸１と一対の軸受２，
２を介して該回転軸１を回転自在に支承する非回転支持
部材３との間の両軸受２，２間に取り替え可能なスリー
ブ４を介装すると共に、非回転支持部材３とスリーブ４
との間に油密リング５を介在させるようにしていた。In order to prevent this difficulty, the applicant of the present application has previously shown a rotating shaft 1 and a pair of bearings 2 as shown in FIG.
A replaceable sleeve 4 is interposed between both bearings 2 and 2 between a non-rotating support member 3 that rotatably supports the rotating shaft 1 via a non-rotating support member 3 and a sleeve 4.
The oil-tight ring 5 was interposed between and.
【０００７】[0007]
【発明が解決しようとする課題】上記の構成であると、
外部から、または切削油中に混入する切削粉等が油密リ
ング５とこれが回転接触するスリーブ４の外周面との間
に噛み込み、油密リング５が接触するスリーブ４の外周
面に切削粉等の摺動摩擦抵抗により窪みが発生して油密
リング５による油密性が破壊された場合には、該スリー
ブ４を回転軸１から取り外して交換するだけで、高価な
回転軸１を取り替える必要がなく、それだけ補修費用が
安くなるという利点がある。With the above configuration,
Cutting powder or the like mixed from the outside or in the cutting oil is caught between the oil-tight ring 5 and the outer peripheral surface of the sleeve 4 with which the oil-tight ring 5 is in rotary contact, and the cutting powder is attached to the outer peripheral surface of the sleeve 4 in contact with the oil-tight ring 5. In the case where the oil tightness of the oil tight ring 5 is broken due to a sliding frictional resistance caused by the sliding frictional resistance, the expensive rotary shaft 1 needs to be replaced only by removing the sleeve 4 from the rotary shaft 1 and replacing it. There is no advantage, and there is an advantage that the repair cost is reduced accordingly.
【０００８】しかしながら上記従来技術であると、非回
転支持部材３は軸受２，２で支持されると共に、前述の
油路接続具と一体的に形成されているため、スリーブ４
の交換時にこれらを全部分解して交換しなければなら
ず、また装着時はいちいち元の状態に組み込まなければ
ならず、その交換作業が非常に面倒であるという難点を
依然として有していた。However, in the above-mentioned prior art, the non-rotational supporting member 3 is supported by the bearings 2 and 2, and is integrally formed with the above-mentioned oil passage connector, so that the sleeve 4 is formed.
All of them had to be disassembled and replaced at the time of replacement, and they had to be installed in their original states at the time of mounting, and the replacement work was still very troublesome.
【０００９】従って、本発明は、使用時の給油作用には
なんら支障をきたすことがなく、即ち、非回転支持部材
や油路接続具を分解することなく、磨耗部分のみを交換
することができるようにした工具ホルダーにおける給油
装置を提案することを解決課題とする。Therefore, according to the present invention, it is possible to replace only the worn portion without any trouble in the oil supply action during use, that is, without disassembling the non-rotating support member and the oil passage connector. The problem to be solved is to propose an oil supply device for such a tool holder.
【００１０】[0010]
【課題を解決するための手段】本発明は上記課題を解決
するために、実施例の参照符号を付して示せば、請求項
１に係る発明にあっては、工作機械のスピンドルに取り
付けられる回転軸１０と、該回転軸１０を回転可能に支
持する非回転支持部材１１とを備えてなる工具ホルダー
において、該非回転支持部材１１とは別体で回転軸１０
に設けた工具用供給油路１２に連通する非回転給油リン
グ１３を回転軸１０に外嵌すると共に、該非回転給油リ
ング１３と工作機械側の油路接続具１４とを着脱可能な
通油管１５で接続して該油路接続具１４の油路１６と非
回転給油リング１３の給油路１７とを前記通油管１５の
通油路１８を介して連通するようにしてなる構成を採用
するものである。In order to solve the above-mentioned problems, the present invention is attached to the spindle of a machine tool in the invention according to claim 1 by showing reference numerals of the embodiments. In a tool holder comprising a rotating shaft 10 and a non-rotating supporting member 11 that rotatably supports the rotating shaft 10, the rotating shaft 10 is separate from the non-rotating supporting member 11.
The non-rotating oil supply ring 13 communicating with the tool oil supply passage 12 provided on the outer peripheral surface of the rotary shaft 10 is detachably attached to the non-rotating oil supply ring 13 and the oil passage connector 14 on the machine tool side. And the oil passage 16 of the oil passage connector 14 and the oil passage 17 of the non-rotating oil supply ring 13 are connected to each other via the oil passage 18 of the oil passage pipe 15. is there.
【００１１】また請求項２に係る発明にあっては、非回
転給油リング１３と回転軸１０との間に取り替え可能な
スリーブ１９を介装してなる構成を採用するものであ
る。The invention according to claim 2 employs a structure in which a replaceable sleeve 19 is interposed between the non-rotating oil supply ring 13 and the rotary shaft 10.
【００１２】また請求項３に係る発明にあっては、非回
転給油リング１３とスリーブ１９との間に油密リング２
０を取り付けてなる請求項２記載の構成を採用するもの
である。In the invention according to claim 3, the oil-tight ring 2 is provided between the non-rotating oil supply ring 13 and the sleeve 19.
The configuration according to claim 2 in which 0 is attached is adopted.
【００１３】また請求項４に係る発明にあっては、スリ
ーブ１９と回転軸１０との間に副油密リング２１を取り
付けてなる請求項２または３記載の構成を採用するもの
である。The invention according to claim 4 adopts the structure according to claim 2 or 3 in which an auxiliary oil-tight ring 21 is attached between the sleeve 19 and the rotary shaft 10.
【００１４】また請求項５に係る発明にあっては、非回
転給油リング１３と非回転支持部材１１との間にドレン
２２が介在してなる請求項１〜４のいずれか記載の構成
を採用するものである。In the invention according to claim 5, the drain 22 is interposed between the non-rotating oil supply ring 13 and the non-rotating support member 11, and the construction according to any one of claims 1 to 4 is adopted. To do.
【００１５】また請求項６に係る発明にあっては、非回
転給油リング１３は前記通油管１５を介して工作機械側
の油路接続具１４に非回転状態に支持されるようになっ
ている請求項１〜５のいずれか記載の構成を採用してな
るものである。Further, in the invention according to claim 6, the non-rotating oil supply ring 13 is non-rotatably supported by the oil passage connector 14 on the machine tool side through the oil passage pipe 15. The configuration according to any one of claims 1 to 5 is adopted.
【００１６】また請求項７に係る発明にあっては、非回
転給油リング１３は非回転支持部材１１に係合して非回
転状態に支持されるようになっている請求項１〜５のい
ずれか記載の構成を採用してなるものである。Further, according to the invention of claim 7, the non-rotating oil supply ring 13 is engaged with the non-rotating support member 11 and is supported in a non-rotating state. The configuration described above is adopted.
【００１７】[0017]
【作用】請求項１に係る発明によれば、工作機械のスピ
ンドル４８に回転軸１０が取り付けられ、非回転支持部
材１１と一体の油路接続具１４が工作機械側の給油台２
３に接続されることによって回転軸１０は該非回転支持
部材１１によって回転自在に支承され、非回転給油リン
グ１３は非回転支持部材１１に係合して、あるいは通油
管１５を介して油路接続具１４に規制されて非回転状態
に支持され、これよって非回転給油リング１３の給油路
１７は通油管１５の通油路１８及び油路接続具１４の油
路１６とは回転軸１０の回転に係わらず常時連通状態に
あり、従って油路接続具１４が上記給油台２３に接続さ
れることによって給油台２３からの切削油（クーラン
ト）は油路接続具１４の油路１６、通油管１５の通油路
１８、非回転給油リング１３の給油路１７及び回転軸１
０の工具用供給油路１２を通って工具Ｔのオイルホール
ｈに給油されることになる。According to the first aspect of the present invention, the rotary shaft 10 is attached to the spindle 48 of the machine tool, and the oil passage connector 14 integrated with the non-rotational supporting member 11 is provided on the machine tool-side oil supply table 2.
3, the rotating shaft 10 is rotatably supported by the non-rotating supporting member 11, the non-rotating oil supply ring 13 is engaged with the non-rotating supporting member 11, or the oil passage is connected through the oil passage pipe 15. The oil supply passage 17 of the non-rotating oil supply ring 13 is restricted by the tool 14 and is supported in a non-rotating state, so that the oil passage 18 of the oil pipe 15 and the oil passage 16 of the oil passage connector 14 rotate the rotating shaft 10. Regardless of the above, the oil passage connector 14 is always in communication with each other, and therefore the oil passage connector 14 is connected to the oil supply table 23 so that the cutting oil (coolant) from the oil supply table 23 is supplied to the oil passage 16 and the oil passage pipe 15 of the oil passage connection device 14. Oil passage 18 of the non-rotating oil supply ring 13 and the rotary shaft 1
Oil is supplied to the oil hole h of the tool T through the tool oil supply passage 12 of 0.
【００１８】長期間の使用により非回転給油リング１３
が磨耗したとき、例えば非回転給油リング１３が硬質樹
脂で形成され、回転軸１０の外周面に接する非回転給油
リング１３の内周面が磨耗して、両者間の油密性が失わ
れたときには、着脱可能な通油管１５を油路接続具１４
から脱出させた状態で、非回転給油リング１３のみを交
換すればよい。Non-rotating refueling ring 13 after long-term use
Is worn, for example, the non-rotating oil supply ring 13 is made of a hard resin, and the inner peripheral surface of the non-rotating oil supply ring 13 in contact with the outer peripheral surface of the rotating shaft 10 is worn away, and the oil tightness between the two is lost. Occasionally, the oil passage pipe 15 which is detachable can be attached to the oil passage connector 14.
Only the non-rotating oil supply ring 13 needs to be replaced in a state where the non-rotating oil supply ring 13 is made to escape.
【００１９】従って、回転軸１０を支承する非回転支持
部材１１及びこれに一体形成される油路接続具１４は回
転軸１０から分解する必要は全くない。Therefore, it is not necessary to disassemble the non-rotating support member 11 for supporting the rotating shaft 10 and the oil passage connector 14 integrally formed with the supporting member 11 from the rotating shaft 10.
【００２０】また請求項２によれば、スリーブ１９は回
転軸１０と一体回転し、従ってスリーブ１９の外周面に
は非回転給油リング１３の内周面に取り付けた油密リン
グ２０が常時接触状態にある。According to the second aspect of the invention, the sleeve 19 rotates integrally with the rotating shaft 10, so that the oil-tight ring 20 attached to the inner peripheral surface of the non-rotating oil supply ring 13 is always in contact with the outer peripheral surface of the sleeve 19. It is in.
【００２１】長期間の使用によりスリーブ１９の外周面
と油密リング２０との間に侵入する切削屑等によってス
リーブ１９の外周面が磨耗して窪みが発生し、両者間の
油密性が失われてスリーブ１９を交換する必要がある場
合には、着脱可能な通油管１５を油路接続具１４から脱
出させた状態で、非回転給油リング１３と共にスリーブ
１９を回転軸１０の外周面に沿って移動させその工具取
付部２４側から取り外すようにすればよい。When used for a long period of time, the outer peripheral surface of the sleeve 19 is abraded by cutting debris entering between the outer peripheral surface of the sleeve 19 and the oil-tight ring 20, causing a depression, resulting in loss of oiltightness between the two. When it is necessary to replace the sleeve 19 by replacing the sleeve 19 with the non-rotating oil supply ring 13, the sleeve 19 along the outer peripheral surface of the rotating shaft 10 is detached from the oil passage connector 14 when the detachable oil pipe 15 is removed. The tool mounting portion 24 side may be detached from the tool mounting portion 24 side.
【００２２】即ち、この場合にも回転軸１０を支承する
非回転支持部材１１及びこれに一体形成される油路接続
具１４は回転軸１０から分解する必要は全くない。That is, also in this case, it is not necessary to disassemble the non-rotating support member 11 supporting the rotary shaft 10 and the oil passage connector 14 integrally formed with the non-rotary support member 11 from the rotary shaft 10.
【００２３】交換された新しいスリーブ１９は、再び非
回転給油リング１３と共に回転軸１０の外周面に装着さ
れ、通油管１５が油路接続具１４に接続されるだけでよ
く、これによって一連の給油通路が形成される。The replaced new sleeve 19 is again mounted on the outer peripheral surface of the rotary shaft 10 together with the non-rotating refueling ring 13, and the oil pipe 15 is connected to the oil passage connector 14, whereby a series of refueling is performed. A passage is formed.
【００２４】また請求項３に係る発明によれば、非回転
給油リング１３とスリーブ１９との間は両者を互いに直
接に接触させても使用に耐える程度の油密性を有する
が、両者間に油密リング２０を介在させることによって
一層の油密性を確保することができる。According to the third aspect of the invention, the non-rotating oil supply ring 13 and the sleeve 19 have an oil tightness such that they can be used even if they are brought into direct contact with each other. Further oil tightness can be secured by interposing the oil tight ring 20.
【００２５】また請求項４に係る発明によれば、スリー
ブ１９と回転軸１０とは一体回転するため、両者を直接
に接触させても使用に耐える油密性を有するが、特に非
回転支持部材１１を支承する軸受２５側へのクーラント
の侵入を阻止するためにスリーブ１９と回転軸１０と間
に副油密リング２１を介在させることによって軸受２５
側へのクーラントの侵入を有効に阻止することができ
る。Further, according to the invention of claim 4, since the sleeve 19 and the rotary shaft 10 rotate integrally with each other, the sleeve 19 and the rotary shaft 10 are oil-tight enough to be used even if they are brought into direct contact with each other. By inserting a sub oil-tight ring 21 between the sleeve 19 and the rotary shaft 10 in order to prevent the coolant from entering the bearing 25 side that supports the bearing 25,
It is possible to effectively prevent the coolant from entering the side.
【００２６】また請求項５に係る発明によれば、非回転
給油リング１３と非回転支持部材１１との間にドレン２
２が介在してなるため、非回転給油リング１３の給油路
１７からクーラントが不測に非回転支持部材１１の軸受
２５側に漏洩しても、該クーラントは軸受２５側に侵入
する前にドレン２２より外部に排出されて軸受２５側に
侵入することがない。Further, according to the invention of claim 5, the drain 2 is provided between the non-rotating oil supply ring 13 and the non-rotating support member 11.
Even if the coolant unexpectedly leaks from the oil supply passage 17 of the non-rotating oil supply ring 13 to the bearing 25 side of the non-rotating support member 11, the drain 22 is drained before entering the bearing 25 side. Further, it is prevented from being discharged to the outside and entering the bearing 25 side.
【００２７】また請求項６または７に係る発明によれ
ば、非回転給油リング１３は前記通油管１５を介して工
作機械側の油路接続具１４に規制され、あるいは非回転
支持部材１１に係合して非回転状態に支持されるように
なっているため、該非回転給油リング１３を介して形成
される一連の給油通路が確実に維持される。According to the sixth or seventh aspect of the invention, the non-rotating oil supply ring 13 is restricted by the oil passage connector 14 on the machine tool side via the oil passage pipe 15, or is engaged with the non-rotating support member 11. Since they are supported in a non-rotating state together, a series of oil supply passages formed via the non-rotating oil supply ring 13 is reliably maintained.
【００２８】[0028]
【実施例】図１は本発明の一実施例を示すもので、回転
軸１０の一端側にマニピュレータ用把持部２６と先細り
状のシャンク部２７が同心状に形成され、他端部にはオ
イルホール付切削工具Ｔの取付部２４が同心状に形成さ
れている。FIG. 1 shows an embodiment of the present invention, in which a manipulator gripping portion 26 and a tapered shank portion 27 are concentrically formed on one end side of a rotary shaft 10 and an oil is formed on the other end portion. The mounting portion 24 of the cutting tool with hole T is formed concentrically.
【００２９】回転軸１０は軸受２５を介して非回転支持
部材１１に回転可能に支持され、非回転支持部材１１の
一側半径方向突出部に形成されたシリンダー部１１Ａに
は、回り止め機構を兼ねた油路接続具１４が取り付けら
れている。The rotating shaft 10 is rotatably supported by the non-rotating support member 11 via a bearing 25, and a rotation preventing mechanism is provided in the cylinder portion 11A formed on one side of the non-rotating support member 11 in the radial direction. The combined oil passage connector 14 is attached.
【００３０】この油路接続具１４は、前記シリンダー部
１１Ａに回転軸１０と平行な方向に摺動可能に内装され
且つシャンク部２７のある側に突出する外筒２８と、こ
の外筒２８に軸方向伸縮自在に螺嵌する内筒２９とから
構成され、外筒２８の外端と内筒２９に螺嵌されたロッ
クナット３０との間には回り止め部材３１が固定されて
いる。また前記内筒２９の内部には、スプリング３２ａ
と該スプリング３２ａによって筒口２９ａを閉塞するよ
うに付勢された球状弁体３２ｂとから成る逆止弁３２が
装着されている。前記外筒２８は圧縮コイルスプリイグ
３３によって外向きに付勢され、該コイルスフリング３
３は外筒２８の端面３４とシリンダー部１１Ａの底面と
の間に介装されている。このスプリング３３の付勢力に
よって外向きに外筒２８が押し出される結果、不使用状
態に於いては、回り止め部材３１の遊端部がマニピュレ
ータ用把持部２６に隣接して回転軸１０に設けられた係
合溝３５に嵌合し、回転軸１０と非回転支持部材１１と
を相対回転不能に結合している。The oil passage connector 14 is provided in the cylinder portion 11A so as to be slidable in a direction parallel to the rotary shaft 10, and has an outer cylinder 28 projecting to the side where the shank portion 27 is present. The rotation stopper member 31 is fixed between the outer end of the outer cylinder 28 and the lock nut 30 screwed into the inner cylinder 29. In addition, a spring 32a is provided inside the inner cylinder 29.
A check valve 32 including a spherical valve body 32b biased by the spring 32a so as to close the cylindrical opening 29a is mounted. The outer cylinder 28 is biased outward by a compression coil sprig 33, and the coil splint 3
3 is interposed between the end surface 34 of the outer cylinder 28 and the bottom surface of the cylinder portion 11A. As a result of the outer cylinder 28 being pushed outward by the urging force of the spring 33, the free end of the anti-rotation member 31 is provided on the rotary shaft 10 adjacent to the manipulator grip 26 in the unused state. The rotary shaft 10 and the non-rotational supporting member 11 are coupled to each other so as not to rotate relative to each other.
【００３１】一方、非回転支持部材１１に隣合ってリン
グ板状のスリーブ１９が回転軸１０の外周面に接触する
ようにして外嵌され、且つ該スリーブ１９の外周側に非
回転給油リング１３が外嵌される。そして非回転給油リ
ング１３の内周面には環状の給油路１７が形成され、ま
たスリーブ１９には該給油路１７に連通する通孔１９ａ
が形成され、これら給油路１７及び通孔１９ａを挟んで
非回転給油リング１３の内周面にスリーブ１９の外周面
に接触する一対の油密リング２０が取り付けられてい
る。なお、本発明では、スリーブ１９は必須条件ではな
い。例えば非回転給油リング１３を四沸化樹脂などの摩
擦係数の小さい硬質合成樹脂で形成し、内周面に油密リ
ングを介在することなく、該非回転給油リング１３を直
接に回転軸１０の外周面に接触させるようにしてもよ
い。On the other hand, a ring-plate-shaped sleeve 19 is externally fitted so as to be adjacent to the non-rotating support member 11 so as to contact the outer peripheral surface of the rotating shaft 10, and the non-rotating oil supply ring 13 is provided on the outer peripheral side of the sleeve 19. Is fitted. An annular oil supply passage 17 is formed on the inner peripheral surface of the non-rotating oil supply ring 13, and the sleeve 19 has a through hole 19a communicating with the oil supply passage 17.
Is formed, and a pair of oil-tight rings 20 that are in contact with the outer peripheral surface of the sleeve 19 are attached to the inner peripheral surface of the non-rotating oil supply ring 13 with the oil supply passage 17 and the through hole 19a interposed therebetween. In the present invention, the sleeve 19 is not an essential condition. For example, the non-rotating oil supply ring 13 is made of a hard synthetic resin having a small friction coefficient such as tetraboride resin, and the non-rotating oil supply ring 13 is directly attached to the outer circumference of the rotary shaft 10 without an oil-tight ring on the inner peripheral surface. You may make it contact a surface.
【００３２】なお、スリーブ１９は、一般の鋼板にクロ
ムメッキしたもの、焼入鋼や超硬材からなるもの、ある
いはこれらにセラミックスやチタンナイトライトをコー
テイングしたもの等のように、少なくとも表面が耐磨耗
性を有するものによって形成されることが好ましい。The sleeve 19 is made of a general steel plate plated with chrome, made of hardened steel or superhard material, or coated with ceramics or titanium nitrite. It is preferably formed of an abrasive material.
【００３３】なおまた、上記実施例では非回転給油リン
グ１３とスリーブ１９との間に油密リング２０を介在し
ているが、図２に示すように上記両者間に油密リングを
介在させないで、直接に互いに接触させるようにしても
よい。この場合には両者間の摩擦をできるだけ軽減する
ために両者の材質を変えて、例えば非回転給油リング１
３の材質を砲金材または硬質樹脂材で形成すると共に、
スリーブ１９を鉄または鋼材で形成することが好まし
い。Although the oil-tight ring 20 is interposed between the non-rotating oil supply ring 13 and the sleeve 19 in the above embodiment, the oil-tight ring is not interposed between the two as shown in FIG. Alternatively, they may be brought into direct contact with each other. In this case, in order to reduce the friction between the two as much as possible, the materials of the both are changed, for example, the non-rotating oil supply ring 1
3 is made of gunmetal or hard resin,
The sleeve 19 is preferably made of iron or steel.
【００３４】更に図３に示すように前記の油密リング２
０に変えて、非回転給油リング１３の給油路１７内に摩
擦係数の小さい例えば四沸化樹脂からなるテーパー状の
鍔付きのリング４６（図４に明瞭に示す）をスリーブ１
９の外周面に圧接するようにして嵌合し、非回転給油リ
ング１３とスリーブ１９との間の油密性を確保するよう
にしてもよい。Further, as shown in FIG. 3, the oil-tight ring 2 described above is used.
In place of 0, in the oil supply passage 17 of the non-rotating oil supply ring 13, there is provided a ring 46 (shown clearly in FIG. 4) having a small friction coefficient and having a tapered flange made of, for example, tetraboride resin, in the sleeve 1.
The outer peripheral surface of 9 may be fitted so as to be in pressure contact with each other to ensure oil tightness between the non-rotating oil supply ring 13 and the sleeve 19.
【００３５】またスリーブ１９の内周面のうち軸受２５
側には副油密リング２１が回転軸１０の外周面に密接す
るよう取り付けられ、非回転給油リング１３及びスリー
ブ１９と非回転支持部材１１との間には当板３６と滑接
板３７とが介在される。The bearing 25 on the inner peripheral surface of the sleeve 19
A sub oil-tight ring 21 is attached to the side so as to be in close contact with the outer peripheral surface of the rotating shaft 10, and a contact plate 36 and a sliding contact plate 37 are provided between the non-rotating oil supply ring 13 and the sleeve 19 and the non-rotating support member 11. Is intervened.
【００３６】非回転支持部材１１にはその外周面適当間
隔に図５に明瞭に示すようにドレン孔２２が形成され、
該ドレン孔２２は図１に示すように非回転支持部材１１
と非回転給油リング１３との境界部に配置される。Drain holes 22 are formed in the non-rotating support member 11 at appropriate intervals on the outer peripheral surface thereof, as clearly shown in FIG.
As shown in FIG. 1, the drain hole 22 has a non-rotating support member 11
And the non-rotating refueling ring 13 are arranged at the boundary.
【００３７】また非回転支持部材１１には係合突起３８
が形成され（図１の下部寄りに示す）、該突起３８は非
回転給油リング１３に形成した係合凹部３９に係合する
ようになっている。従って非回転給油リング１３は非回
転支持部材１１に係合して非回転状態が維持されるよう
になっている。なお、これらの係合手段は後述のように
特に設けられなくてもよい。The non-rotating support member 11 has an engaging projection 38.
Is formed (shown in the lower part of FIG. 1), the projection 38 is adapted to engage with the engaging recess 39 formed in the non-rotating oil supply ring 13. Therefore, the non-rotating oil supply ring 13 is engaged with the non-rotating support member 11 to maintain the non-rotating state. It should be noted that these engaging means may not be particularly provided as described later.
【００３８】非回転給油リング１３の先端面側にも滑接
板４０が当てつけられ、この状態でナット４１が回転軸
１０の外周面に設けられたねじ部４２にねじ込まれてス
リーブ１９と非回転給油リング１３との軸方向への移動
を阻止すると共に、スリーブ１９は回転軸１０と一体回
転するようにしている。The sliding plate 40 is also applied to the tip surface side of the non-rotating oil supply ring 13, and in this state, the nut 41 is screwed into the threaded portion 42 provided on the outer peripheral surface of the rotating shaft 10 so as not to rotate with the sleeve 19. The sleeve 19 is prevented from moving in the axial direction with the oil supply ring 13, and the sleeve 19 rotates integrally with the rotary shaft 10.
【００３９】非回転給油リング１３のうち前記油路接続
具１４に面する側には通油管１５が径方向に突設され、
該通油管１５はばね４３に付勢されて突出移動すると共
に、ばね４３の付勢力に抗して後退するようになってい
る。そしてばね４３に付勢されて突出するときに油路接
続具１４の油路１６と接続するようになっている。図１
の実施例では油路接続具１４のシリンダー部１１Ａの外
周側に油密的に嵌合する筒体４４に設けた接続孔４５に
通油管１５の先端部が嵌合することによって油路接続具
１４の油路１６と接続されるようになっており、この筒
体４４であればシリンダー部１１Ａの外周面を周方向に
回動することが可能であるから通油管１５の油路接続具
１４に対する周方向の取付位置を調整することができる
利点がある。勿論、図６に示すように油路接続具１４の
シリンダー部１１Ａに設けた接続孔４５に直接に接続す
るようにしてもよい。なお、非回転給油リング１３の非
回転状態の維持は通油管１５が油路接続具１４に接続さ
れることによって非回転給油リング１３が油路接続具１
４に規制されてその回転を阻止するようにしてもよく、
この場合には前述のように非回転支持部材１１と非回転
給油リング１３との間の係合手段は不要である。On the side of the non-rotating oil supply ring 13 facing the oil passage connector 14, an oil passage pipe 15 is provided so as to project radially.
The oil passage pipe 15 is urged by the spring 43 to move in a protruding manner, and also moves backward against the urging force of the spring 43. Then, when it is urged by the spring 43 and protrudes, it is connected to the oil passage 16 of the oil passage connector 14. FIG.
In this embodiment, the tip of the oil passage pipe 15 is fitted into the connection hole 45 provided in the cylindrical body 44 that is oil-tightly fitted to the outer peripheral side of the cylinder portion 11A of the oil passage connector 14, so that the oil passage connector is fitted. 14 is connected to the oil passage 16, and the cylinder 44 can rotate the outer peripheral surface of the cylinder portion 11A in the circumferential direction. There is an advantage that the mounting position in the circumferential direction with respect to can be adjusted. Of course, as shown in FIG. 6, it may be directly connected to the connection hole 45 provided in the cylinder portion 11A of the oil passage connector 14. In order to maintain the non-rotating state of the non-rotating oil supply ring 13, the non-rotating oil supply ring 13 is connected to the oil passage connector 14 so that the non-rotating oil supply ring 13 is kept in the oil passage connector 1.
It may be restricted by 4 to prevent its rotation,
In this case, as described above, the engaging means between the non-rotating support member 11 and the non-rotating oil supply ring 13 is unnecessary.
【００４０】工具ホルダーの使用途上においては、非回
転支持部材１１は回り止めを兼ねた油路接続具１４が、
工作機械の固定部４７に設けられた給油台２３に係止さ
れることによって回り止め部材３１がコイルスプリング
３３の付勢力に抗して後退し、該部材３１と回転軸１０
側の係合溝３５との係合状態が解除され、回転軸１０は
回転自在に保持される。従って回転軸１０は非回転支持
部材１１に支持された状態で、その先端の工具取付部２
４に取り付けられた回転切削工具Ｔで所定の切削加工が
行われる。When the tool holder is in use, the non-rotating support member 11 has the oil passage connector 14 which also functions as a rotation stopper.
The rotation stop member 31 is retracted against the biasing force of the coil spring 33 by being locked by the oil supply table 23 provided in the fixed portion 47 of the machine tool, and the member 31 and the rotary shaft 10 are rotated.
The engagement state with the side engagement groove 35 is released, and the rotating shaft 10 is rotatably held. Therefore, while the rotating shaft 10 is supported by the non-rotating support member 11, the tool mounting portion 2 at the tip thereof is
Predetermined cutting work is performed by the rotary cutting tool T attached to No. 4.
【００４１】しかして給油台２３の送油溝２３ａから送
り出される切削油（クーラント）は、逆止弁３２を押し
開き、油路接続具１４の油路１６、通油管１５の通油路
１８、非回転給油リング１３の給油路１７を通り、非回
転給油リング１３とスリーブ１９との間の相対界面間を
一対の油密リング２０、２０によって油密が適宜保持さ
れながら、あるいは非回転給油リング１３が硬質合成樹
脂からなる場合には、その内周面が直接に且つ油密的に
回転軸１０の外周面に接触して回転軸１０側の工具用供
給油路１２を通って切削工具Ｔのオイルホールｈに給油
され、該工具Ｔの先端部よりクーラントが吐出される。The cutting oil (coolant) sent out from the oil supply groove 23a of the oil supply table 23 pushes the check valve 32 open to open the oil passage 16 of the oil passage connector 14, the oil passage 18 of the oil passage 15, The oil-tightness is appropriately maintained by a pair of oil-tight rings 20 and 20 between the relative interfaces between the non-rotational oil supply ring 13 and the sleeve 19 through the oil supply passage 17 of the non-rotational oil supply ring 13, or the non-rotational oil supply ring. When 13 is made of a hard synthetic resin, its inner peripheral surface directly and oil-tightly contacts the outer peripheral surface of the rotary shaft 10 and passes through the tool supply oil passage 12 on the rotary shaft 10 side to cut the cutting tool T. Oil is supplied to the oil hole h, and the coolant is discharged from the tip of the tool T.
【００４２】この際に、図１に示すように非回転支持部
材１１とスリーブ１９との間に油密リング２０を介在し
ていても、あるいは図３に示すように油密用鍔付きリン
グ４６を介在していても両油密リングの磨耗により、あ
るいは図２に示すように両者間になんら油密部材を介在
させない場合には、クーラントが非回転支持部材１１を
支承する軸受２５側に漏出し、該軸受２５を損傷する危
険性があるわけであるが、この実施例では非回転給油リ
ング１３と非回転支持部材１１との間にドレン２２が介
在しているため、クーラントが不測に軸受２５側に流出
してもその途中でドレン２２から外部に排出されるた
め、該クーラントが軸受２５に侵入することはない。At this time, even if the oiltight ring 20 is interposed between the non-rotational supporting member 11 and the sleeve 19 as shown in FIG. 1, or as shown in FIG. 2 through the oil-tight rings, or if no oil-tight member is interposed between the two as shown in FIG. 2, the coolant leaks to the bearing 25 side that supports the non-rotating support member 11. However, there is a risk of damaging the bearing 25. However, in this embodiment, since the drain 22 is interposed between the non-rotating oil supply ring 13 and the non-rotating support member 11, the coolant may unexpectedly come into contact with the bearing. Even if it flows out to the 25 side, it is discharged from the drain 22 to the outside on the way, so that the coolant does not enter the bearing 25.
【００４３】ところで長期の使用期間中に、外部から、
または切削油中に混入する切削粉等が上述の相対界面間
から油密リング２０、２０とこれが回転接触する回転軸
１０の外周面またはスリーブ１９の外周面との間に噛み
込み、スリーブ１９の外周面に切削粉等の摺動摩擦抵抗
により窪みが発生して非回転給油リング１３と回転軸１
０との間、またはスリーブ１９との間の油密性が破壊さ
れた場合には、ナット４１を外し、且つ通油管１５をば
ね４３の付勢力に抗して後退させて該通油管１５と油路
接続具１４との接続状態を断ち、この状態で図７に示す
ように非回転給油リング１３のみを、またはスリーブ１
９とその外周側の非回転給油リング１３とを一体的にま
たは別々に工具取付部２４側から取り外し、スリーブ１
９のみを、または必要に応じて疲労した油密リング２０
とを交換すればよい。By the way, during a long use period, from the outside,
Alternatively, cutting powder or the like mixed in the cutting oil is caught between the oil-tight rings 20 and 20 and the outer peripheral surface of the rotating shaft 10 or the outer peripheral surface of the sleeve 19 with which the oil-tight rings 20 and 20 are in rotary contact with each other, and A dent is generated on the outer peripheral surface due to sliding friction resistance of cutting powder or the like, and the non-rotating oil supply ring 13 and the rotating shaft 1
When the oil tightness between the oil passage 0 and the sleeve 19 is broken, the nut 41 is removed, and the oil passage pipe 15 is retracted against the urging force of the spring 43, and The connection state with the oil passage connector 14 is cut off, and in this state, as shown in FIG. 7, only the non-rotating oil supply ring 13 or the sleeve 1
9 and the non-rotating oil supply ring 13 on the outer peripheral side thereof are removed integrally or separately from the tool mounting portion 24 side, and the sleeve 1
9 or, if necessary, an oil-tight ring 20 that is fatigued
You can replace with.
【００４４】即ち、非回転支持部材１１及びこれを支承
する軸受２５、非回転支持部材１１と一体の油路接続具
１４を回転軸１０から分解することは全く必要としない
から、その交換作業は非常に容易である。That is, it is not necessary to disassemble the non-rotational support member 11, the bearing 25 supporting the non-rotational support member 11 and the oil passage connector 14 integrated with the non-rotational support member 11 from the rotary shaft 10 at all. It's very easy.
【００４５】[0045]
【発明の効果】請求項１に係る発明によれば、長期間の
使用により非回転給油リングの内周面が磨耗した場合に
は、非回転給油リングのみを回転軸から取り外せばよ
く、回転軸を支承する非回転支持部材や油路接続具を回
転軸から分解する必要は全くないため、その交換作業が
極めて容易である。According to the invention of claim 1, when the inner peripheral surface of the non-rotating oil supply ring is worn due to long-term use, only the non-rotating oil supply ring needs to be removed from the rotating shaft. Since there is no need to disassemble the non-rotating support member or the oil passage connector that supports the bearing from the rotating shaft, the replacement work is extremely easy.
【００４６】また請求項２に係る発明によれば、スリー
ブの外周面と油密リングとの間に侵入する切削屑等によ
ってスリーブの外周面が磨耗して窪みが発生し、両者間
の油密性が失われてスリーブを交換する必要がある場合
には、非回転給油リングとスリーブを回転軸から取り外
せばよく、回転軸を支承する非回転支持部材や油路接続
具を回転軸から分解する必要は全くないため、その交換
作業が極めて容易である。According to the second aspect of the present invention, the outer peripheral surface of the sleeve is abraded by cutting debris entering between the outer peripheral surface of the sleeve and the oil-tight ring to form a dent, so that the oil-tightness between them is reduced. If the sleeve loses its properties and the sleeve needs to be replaced, the non-rotating oil supply ring and sleeve can be removed from the rotating shaft, and the non-rotating support member supporting the rotating shaft and the oil passage connector can be disassembled from the rotating shaft. Since there is no need at all, the replacement work is extremely easy.
【００４７】また請求項３に係る発明によれば、非回転
給油リングとスリーブとの間には油密リングを介在させ
るため、漏油し易い回転部分と非回転部分との相対界面
部の一層の油密性を確保することができる。Further, according to the third aspect of the invention, since the oil-tight ring is interposed between the non-rotating oil supply ring and the sleeve, the relative interface between the rotating portion and the non-rotating portion where oil easily leaks is further improved. The oil tightness of can be secured.
【００４８】また請求項４に係る発明によれば、非回転
支持部材を支承する軸受側へのクーラントの侵入を阻止
するためにスリーブと回転軸と間に副油密リングを介在
させることによって軸受側へのクーラントの侵入を有効
に阻止することができる。According to the fourth aspect of the invention, the bearing is provided by interposing an auxiliary oil-tight ring between the sleeve and the rotary shaft to prevent the coolant from entering the bearing side that supports the non-rotating support member. It is possible to effectively prevent the coolant from entering the side.
【００４９】また請求項５に係る発明によれば、非回転
給油リングと非回転支持部材との間にドレンが介在して
なるため、非回転給油リングの給油路から不測にクーラ
ントが非回転支持部材の軸受側に漏洩しても、該クーラ
ントは軸受側に侵入する前にドレンより外部に排出され
て軸受側に侵入することがなく、フェイルセーフの機能
を最大限に発揮させることができる。According to the fifth aspect of the present invention, since the drain is interposed between the non-rotating oil supply ring and the non-rotating support member, the coolant unexpectedly comes into contact with the non-rotating support from the oil supply passage of the non-rotating oil supply ring. Even if the coolant leaks to the bearing side of the member, the coolant is not discharged to the outside from the drain before entering the bearing side and does not enter the bearing side, and the fail-safe function can be maximized.
【００５０】また請求項６または７に係る発明によれ
ば、非回転給油リングは前記通油管を介して工作機械側
の油路接続具に規制され、あるいは非回転支持部材に係
合して非回転状態に支持されるようになっているため、
該非回転給油リングを介して形成される一連の給油通路
が確実に維持される。According to the sixth or seventh aspect of the invention, the non-rotating oil supply ring is regulated by the oil passage connector on the machine tool side through the oil passage pipe or is engaged with the non-rotating support member to prevent non-rotation. Because it is supported in a rotating state,
A series of oil supply passages formed via the non-rotating oil supply ring is reliably maintained.
【図１】 本発明の一実施例の要部を示す断面図であ
る。FIG. 1 is a sectional view showing a main part of an embodiment of the present invention.
【図２】 同他の実施例の要部を示す断面図である。FIG. 2 is a cross-sectional view showing the main parts of the other embodiment.
【図３】 同更に他の実施例の要部を示す断面図であ
る。FIG. 3 is a cross-sectional view showing the main parts of yet another embodiment of the present invention.
【図４】 同他の実施例の要部を示す斜視図である。FIG. 4 is a perspective view showing a main part of another embodiment.
【図５】 同他の実施例の要部を示す斜視図である。FIG. 5 is a perspective view showing a main part of another embodiment.
【図６】 同他の実施例の要部を示す断面図である。FIG. 6 is a cross-sectional view showing a main part of another embodiment.
【図７】 同実施例の使用状態を示す斜視図である。FIG. 7 is a perspective view showing a usage state of the embodiment.
【図８】 従来例の要部を示す断面図である。FIG. 8 is a cross-sectional view showing a main part of a conventional example.
１０ 回転軸 １１ 非回転支持部材 １２ 工具用供給油路 １３ 非回転給油リング １４ 油路接続具 １５ 通油管 １６ 油路 １７ 給油路 １８ 通油路 １９ スリーブ ２０ 油密リング ２１ 副油密リング ２２ ドレン 10 rotating shaft 11 non-rotating support member 12 tool oil supply passage 13 non-rotating oil supply ring 14 oil passage connector 15 oil passage pipe 16 oil passage 17 oil supply passage 18 oil passage 19 sleeve 20 oil tight ring 21 sub oil tight ring 22 drain
Claims (7)
回転軸と、該回転軸を回転可能に支持する非回転支持部
材とを備えてなる工具ホルダーにおいて、該非回転支持
部材とは別体で回転軸に設けた工具用供給油路に連通す
る非回転給油リングを回転軸に外嵌すると共に、該非回
転給油リングと工作機械側の油路接続具とを着脱可能な
通油管で接続して該油路接続具の油路と非回転給油リン
グの給油路とを前記通油管の通油路を介して連通するよ
うにしてなる工具ホルダーにおける給油装置。1. A tool holder comprising a rotating shaft attached to a spindle of a machine tool and a non-rotating supporting member rotatably supporting the rotating shaft, wherein the rotating shaft is separate from the non-rotating supporting member. The non-rotating oil supply ring communicating with the provided tool oil supply passage is externally fitted to the rotating shaft, and the non-rotating oil supply ring and the oil passage connector on the machine tool side are connected by a detachable oil passage pipe. oil feeder in a tool holder comprising so as to communicate via the oil passage of the through oil pipe and a supply passage in the oil passage and a non-rotating oil ring of the connector.
替え可能なスリーブを介装してなる請求項１記載の工具
ホルダーにおける給油装置。2. A device provided between the non-rotating oil supply ring and the rotating shaft.
The tool according to claim 1, wherein a replaceable sleeve is interposed.
Refueling device in the holder .
密リングを取り付けてなる請求項２記載の工具ホルダー
における給油装置。3. Oil between the non-rotating oil supply ring and the sleeve
The tool holder according to claim 2, wherein a tight ring is attached.
Refueling equipment in .
を取り付けてなる請求項２または３記載の工具ホルダー
における給油装置。4. A sub oil-tight ring between the sleeve and the rotary shaft.
The tool holder according to claim 2 or 3, wherein the tool holder is attached.
Refueling equipment in .
間にドレンが介在してなる請求項１〜４のいずれか記載
の工具ホルダーにおける給油装置。5. A non-rotating oil supply ring and a non-rotating support member
5. The drain according to claim 1, wherein a drain is interposed therebetween.
Refueling device for tool holders in Japan .
工作機械側の油路接続具に非回転状態に支持されるよう
になっている請求項１〜５のいずれか記載の工具ホルダ
ーにおける給油装置。6. A non-rotating oil supply ring is provided through the oil passage pipe.
Being supported by the oil passage connector on the machine tool side in a non-rotating state
Tool holder according to any one of claims 1 to 5.
Refueling device in .
合して非回転状態に支持されるようになっている請求項
１〜５のいずれか記載の工具ホルダーにおける給油装
置。7. A non-rotating oil supply ring is engaged with a non-rotating support member.
Claims that are combined so that they are supported in a non-rotating state.
Refueling equipment in the tool holder according to any one of 1 to 5
Place .
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14785193A JPH0825124B2 (en) | 1993-06-18 | 1993-06-18 | Oil supply device in tool holder |
| TW82111184A TW241214B (en) | 1993-06-18 | 1993-12-30 | |
| KR94000601A KR0124041B1 (en) | 1993-06-18 | 1994-01-14 | Coolant feeder in a tool holder assembly |
| DE69424222T DE69424222T2 (en) | 1993-06-18 | 1994-01-20 | Tool holder with coolant supply |
| EP94100810A EP0629462B1 (en) | 1993-06-18 | 1994-01-20 | Coolant feeder in a tool holder assembly |
| CN94101091A CN1096726A (en) | 1993-06-18 | 1994-01-28 | Fueller in the pad |
| US08/198,159 US5439333A (en) | 1993-06-18 | 1994-02-17 | Coolant feeder in a tool holder assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14785193A JPH0825124B2 (en) | 1993-06-18 | 1993-06-18 | Oil supply device in tool holder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH071280A JPH071280A (en) | 1995-01-06 |
| JPH0825124B2 true JPH0825124B2 (en) | 1996-03-13 |
Family
ID=15439697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14785193A Expired - Lifetime JPH0825124B2 (en) | 1993-06-18 | 1993-06-18 | Oil supply device in tool holder |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0825124B2 (en) |
| TW (1) | TW241214B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2997878B1 (en) * | 2012-11-13 | 2017-12-22 | Mitis | SEALING SYSTEM FOR TOOL HOLDER |
-
1993
- 1993-06-18 JP JP14785193A patent/JPH0825124B2/en not_active Expired - Lifetime
- 1993-12-30 TW TW82111184A patent/TW241214B/zh not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH071280A (en) | 1995-01-06 |
| TW241214B (en) | 1995-02-21 |
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