JPH0321879Y2 - - Google Patents
Info
- Publication number
- JPH0321879Y2 JPH0321879Y2 JP1986168830U JP16883086U JPH0321879Y2 JP H0321879 Y2 JPH0321879 Y2 JP H0321879Y2 JP 1986168830 U JP1986168830 U JP 1986168830U JP 16883086 U JP16883086 U JP 16883086U JP H0321879 Y2 JPH0321879 Y2 JP H0321879Y2
- Authority
- JP
- Japan
- Prior art keywords
- holder
- oil passage
- holder body
- tool
- driven shaft
- 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
Links
- 239000003921 oil Substances 0.000 description 48
- 239000010730 cutting oil Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Auxiliary Devices For Machine Tools (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、切削工具を工作機械のスピンドルに
取付けて使用される工具ホルダーに関し、更に詳
しくは、工作機械のスピンドルに取付けられるホ
ルダー本体と、ホルダー本体を軸受を介して回転
可能に支承する支持部材と、ホルダー本体の内部
に同心状に配置され且つ該ホルダー本体の回転が
増速歯車機構を介して伝達されるようになつてい
て、外方側端部に工具取付部を有する被駆動軸
と、支持部材を非回転状態に保持するストツパー
ピンと、からなる工具ホルダーにおいて、工具の
刃先部に切削油を供給するための給油装置に関す
る。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a tool holder used by attaching a cutting tool to the spindle of a machine tool, and more specifically, a holder body attached to the spindle of a machine tool, A support member rotatably supports the holder body via a bearing, and a support member disposed concentrically inside the holder body and configured to transmit rotation of the holder body via a speed increasing gear mechanism, and an external support member rotatably supporting the holder body via a bearing. The present invention relates to an oil supply device for supplying cutting oil to the cutting edge of a tool in a tool holder consisting of a driven shaft having a tool attachment portion at one side end and a stopper pin that holds a support member in a non-rotating state.
（従来技術及びその問題点）
従来、この種の増速歯車機構を有する工具ホル
ダーにおいては、伝動歯車、軸受等が多く内蔵さ
れて内部構造が複雑化し、しかもホルダー本体と
被駆動軸とが一体回転せずに両者の間で相対的に
大きな回転速度差を生じることから、給油装置
は、給油管をホルダーの外部に配管してホルダー
と別体の構造にすると共に、切削油を工具の側方
よりその刃先部に供給するようにしてなるもので
あつたが、斯る給油装置では取付操作が面倒であ
る上、肝心の刃先部の冷却が十分に行えないとい
つた問題があつた。(Prior art and its problems) Conventionally, tool holders with this type of speed-increasing gear mechanism have many transmission gears, bearings, etc. built-in, making the internal structure complicated, and the holder body and driven shaft are integrated. Since there is a relatively large difference in rotational speed between the two without rotation, the oil supply device has a structure separate from the holder by piping the oil supply pipe outside the holder, and also directs the cutting oil to the side of the tool. However, such lubricating devices were troublesome to install and were not able to sufficiently cool the critical part of the cutting edge.
（問題点を解決するための技術手段）
本考案は上記の問題を解消するもので、そのた
めの技術的手段は、被駆動軸１７を内部が通油路
２２となる中空管軸にて形成すると共に、該中空
管軸の内方側端部に延長部１７ａを設け、該延長
部１７ａをホルダー本体１に設けた通油路２１に
嵌入させ、この嵌入部分でホルダー側通油路２１
と被駆動軸側通油路２２とをシール部材２０を介
して連通連結し、被駆動軸側通油路２２の先端部
を工具取付部６に連通連結すると共に、ホルダー
側通油路２１の基端部をスピンドル２に設けた給
油路に連通連結してなることである。(Technical means for solving the problem) The present invention solves the above problem, and the technical means for that purpose is to form the driven shaft 17 with a hollow tube shaft with an oil passage 22 inside. At the same time, an extension part 17a is provided at the inner end of the hollow tube shaft, and the extension part 17a is fitted into the oil passage 21 provided in the holder main body 1, and this fitted part connects the holder side oil passage 21.
and the driven shaft side oil passage 22 are connected to each other via the seal member 20, and the tip of the driven shaft side oil passage 22 is connected to the tool mounting part 6, and the holder side oil passage 21 is connected to the tool attachment part 6. The base end is connected in communication with an oil supply path provided in the spindle 2.
（実施例）
以下本考案の実施例を図面にもとずいて説明す
ると、第１図は工具ホルダーを示しており、この
図において１は工作機械のスピンドル２に取付け
れる丸軸状のホルダー本体であつて、一端部にマ
ニユピレータ用把持部３と先細り状のシヤンク部
とが同心状に形成され、他端部側にエンドミルな
どの切削工具５を取付ける工具取付部としてのチ
ヤツク６が同心状に設けられている。７は支持部
材であつて、前記マニユピレータ用把持部３とチ
ヤツク６との中間位置で前記ホルダー本体１をボ
ールベアリングからなる軸受８を介して回転可能
に支持し、その一端半径方向突出部７ａには当該
支持部材７を非回転状態に保持するストツパーピ
ン９が取付けられれている。このストツパーピン
９は、前記突出部７ａの穴部１０にホルダー本体
１と平行な方向に摺動可能に内装され且つシヤン
ク部４のある側に突出する外筒１１と、この外筒
１１に螺嵌されたピン本体１２とから構成され、
外筒１１とピン本体１２に螺嵌されたロツクナツ
ト１３との間で廻り止め部材１４が固定されてい
る。１５は前記外筒１１を外向きに付勢する圧縮
コイルスプリングであつて、外筒１１の後端面と
穴部１０の奥壁部との間に介装されている。この
スプリング１５の付勢力によつて外向きに外筒１
１が押し出される結果、不使用状態に於いては、
廻り止め部材１４の遊端部がマニユピレータ用把
持部３に隣接してホルダー本体１に設けられた係
合溝１６に一点鎖線で示すように嵌合し、ホルダ
ー本体１と支持部材７とを相対回転不能に結合し
ている。１７はホルダー本体１の内部に同心状に
配設された中空管軸からなる被駆動軸であり、ホ
ルダー本体１の回転が増速歯車機構１８を介して
伝達されるようになつており、前記チヤツク６が
この外方側端部に螺着してある。１９はこの被駆
動軸１７をホルダー本体１内で回転自在に支持し
ている軸受で、ボールベアリングからなる。(Example) An example of the present invention will be described below based on the drawings. Figure 1 shows a tool holder, and in this figure, 1 is a round shaft-shaped holder body that is attached to the spindle 2 of a machine tool. A manipulator grip part 3 and a tapered shank part are formed concentrically at one end, and a chuck 6 as a tool attachment part for attaching a cutting tool 5 such as an end mill is concentrically formed at the other end. It is provided. Reference numeral 7 denotes a support member which rotatably supports the holder main body 1 at an intermediate position between the manipulator grip 3 and the chuck 6 via a bearing 8 consisting of a ball bearing, and has one end attached to a radial protrusion 7a. A stopper pin 9 is attached to hold the support member 7 in a non-rotating state. This stopper pin 9 includes an outer cylinder 11 that is slidably inserted in the hole 10 of the protruding part 7a in a direction parallel to the holder body 1 and that protrudes toward the side where the shank part 4 is located, and that is screwed into the outer cylinder 11. It is composed of a pin body 12 which is
A rotation preventing member 14 is fixed between the outer cylinder 11 and a lock nut 13 screwed onto the pin body 12. A compression coil spring 15 biases the outer cylinder 11 outward, and is interposed between the rear end surface of the outer cylinder 11 and the inner wall of the hole 10. Due to the biasing force of the spring 15, the outer cylinder 1
As a result of 1 being pushed out, in the unused state,
The free end of the rotation prevention member 14 fits into the engagement groove 16 provided in the holder body 1 adjacent to the manipulator grip 3 as shown by the dashed line, and the holder body 1 and the support member 7 are moved relative to each other. They are non-rotatably connected. Reference numeral 17 denotes a driven shaft consisting of a hollow tube shaft disposed concentrically inside the holder body 1, and the rotation of the holder body 1 is transmitted via the speed increasing gear mechanism 18. The chuck 6 is screwed onto this outer end. A bearing 19 rotatably supports the driven shaft 17 within the holder body 1, and is composed of a ball bearing.
前記ホルダー本体１にはその軸心に沿つて通油
路２１が貫設されており、また被駆動軸１７の内
部も通油路２２を構成している。しかして被駆動
軸１７の内方側端部には若干小外径の延長部１７
ａが形成されており、この延長部１７ａがホルダ
ー本体側通油路２１にオーバラツプするように嵌
入され両者１，１７の両通油路２１，２２が同軸
に連通連結されると共に、該延長部１７ａの嵌入
部分の外周面とホルダー本体側通油路２１との間
がＯリング等のシールリング２０を介して液密封
止されている。そしてホルダー本体側通油路２１
の基端部はスピンドル２の内奥部に設けられた給
油路（図示省略）に連通連結されていると共に、
被駆動軸側通油路２２の先端部はチヤツク６にお
いて切削工具５の油穴５ａに連通連結されてい
る。 An oil passage 21 is provided through the holder main body 1 along its axis, and an oil passage 22 is also formed inside the driven shaft 17. Therefore, the inner end of the driven shaft 17 has an extension 17 with a slightly smaller outer diameter.
a is formed, and this extension part 17a is fitted so as to overlap with the oil passage 21 on the holder main body side, so that both oil passages 21 and 22 of both 1 and 17 are coaxially connected, and the extension part A space between the outer circumferential surface of the fitting portion 17a and the holder body side oil passage 21 is liquid-tightly sealed via a seal ring 20 such as an O-ring. And holder body side oil passage 21
The base end of the spindle 2 is connected to an oil supply passage (not shown) provided in the innermost part of the spindle 2, and
The tip of the driven shaft side oil passage 22 is connected to the oil hole 5a of the cutting tool 5 at the chuck 6.
したがつて、スピンドル２内奥部の給油路より
ホルダー本体側通油路２１に送給される切削油
は、ホルダー本体１と被駆動軸１７との間で増速
歯車機構によつて相対的に大きな回転速度差を生
じるにも関わらず、シールリング２０により双方
の通油路２１，２２の連結部から外部に漏れ出る
ことなく、そのまま被駆動軸１７内部の通油路２
２を通つて更に工具５内部の油穴５ａに供給され
得、それにより切削加工時には工具５の刃先部ま
で十分に冷却することができる。 Therefore, the cutting oil that is fed from the oil supply path deep inside the spindle 2 to the holder body side oil passage 21 is transferred between the holder body 1 and the driven shaft 17 by the speed increasing gear mechanism. Even though there is a large difference in rotational speed between the oil passages 21 and 22, the seal ring 20 prevents the oil passages 21 and 22 from leaking to the outside from the joint between the two oil passages 21 and 22.
2 to the oil hole 5a inside the tool 5, thereby making it possible to sufficiently cool the cutting edge of the tool 5 during cutting.
前記増速歯車機構１８は、被駆動軸１７の基端
部外周面に嵌合されてキー２３により固着された
太陽歯車２４を含んでなるもので、この太陽歯車
２４に対応してホルダー本体１の周方向等間隔
（３ケ所）に内外に貫通して三個の遊星歯車２５
が支軸２６に支持され、且つニードルベアリング
からなる軸受２７によつて遊転自在に設けられ、
該遊星歯車２５がその内周側において前記太陽歯
車２４に噛合し、その外周側において支持部材７
の内周面に設けた内歯歯車２８に噛合することに
よつて増速歯車機構１８が構成され、該機構１８
によつてホルダー本体１の回転が被駆動軸１７に
格段に増速されて伝達され、被駆動軸１７先端部
のチヤツク６に取付けられた切削工具５の切削能
力を向上せしめるようになつている。 The speed increasing gear mechanism 18 includes a sun gear 24 that is fitted onto the outer circumferential surface of the base end of the driven shaft 17 and fixed by a key 23. Three planetary gears 25 penetrate inside and outside at equal intervals (3 locations) in the circumferential direction.
is supported by a support shaft 26 and freely rotatable by a bearing 27 made of a needle bearing,
The planetary gear 25 meshes with the sun gear 24 on its inner circumferential side, and the support member 7 on its outer circumferential side.
A speed increasing gear mechanism 18 is constructed by meshing with an internal gear 28 provided on the inner peripheral surface of the mechanism 18.
As a result, the rotation of the holder body 1 is transmitted to the driven shaft 17 at a significantly increased speed, thereby improving the cutting ability of the cutting tool 5 attached to the chuck 6 at the tip of the driven shaft 17. .
なお、２９は工作機械のフレームなどの固定部
材であつて、その端面の該部材の一部たる係合ブ
ロツク３０が一体またはボルト止めなどにより一
体的に設けられ、この係合ブロツク３０には、前
記ストツパーピン９のピン本体１２が係嵌して該
ストツパーピン９の周方向の移動を阻止する係合
溝３１が設けられている。 Reference numeral 29 denotes a fixed member such as a frame of a machine tool, and an engagement block 30, which is a part of the member on the end face thereof, is provided integrally or by bolting. An engagement groove 31 is provided in which the pin body 12 of the stopper pin 9 is engaged to prevent the stopper pin 9 from moving in the circumferential direction.
次に上述した工具ホルダー及び給油装置の操作
を説明すると、該工具ホルダーは、マニユピレー
タ用把持部３を介してこのホルダーを把持するマ
ニユピレータにより、ホルダー本体１のシヤンク
部４が前記スピンドル２に嵌合し、且つストツパ
ーピン９の先端部が工作機械側の固定部材２９た
る係合ブロツク３０に係嵌し、セツトされる。こ
の結果、支持部材７がホルダー本体１の軸心の周
りで回転することが阻止され、且つストツパーピ
ン９がスプリング１５の付勢力に抗して後退移動
せしめられることにより、このストツパーピン９
と一体に移動する廻り止め部材１４がホルダー本
体１側の係合溝１６から離脱して、支持部材７に
対しホルダー本体１が回転可能に切り換えられ
る。そしてスピンドル２の回転により、これと一
体にホルダー本体１が回転するが、このホルダー
本体１の回転は増速歯車機構１８により増速され
て被駆動軸１７に伝動されることになる。一方、
上記のように工具ホルダーが工作機械側にセツト
されることによつて、ホルダー本体側通油路２１
が自動的にスピンドル２側の給油に連通連結さ
れ、したがつてスピンドル２側の給油路から送給
されてくる切削油はホルダー本体側通油路２１及
び被駆動軸側通油路２２を通つて切削工具５の油
穴５ａに連続的に供給されることになる。 Next, the operation of the above-mentioned tool holder and oil supply device will be described. The tool holder is constructed by fitting the shank portion 4 of the holder body 1 into the spindle 2 by a manipulator that grips the holder via the manipulator grip portion 3. Then, the tip of the stopper pin 9 is engaged with the engagement block 30, which is the fixing member 29 on the machine tool side, and is set. As a result, the support member 7 is prevented from rotating around the axis of the holder body 1, and the stopper pin 9 is moved backward against the biasing force of the spring 15.
The rotation preventing member 14 that moves together with the holder body 1 is disengaged from the engagement groove 16 on the holder body 1 side, and the holder body 1 is switched to be rotatable relative to the support member 7. As the spindle 2 rotates, the holder body 1 rotates together with it, and the rotation of the holder body 1 is accelerated by the speed increasing gear mechanism 18 and transmitted to the driven shaft 17. on the other hand,
By setting the tool holder on the machine tool side as described above, the holder body side oil passage 21
is automatically connected to the oil supply on the spindle 2 side, so the cutting oil fed from the oil supply passage on the spindle 2 side passes through the holder body side oil passage 21 and the driven shaft side oil passage 22. Therefore, the oil is continuously supplied to the oil hole 5a of the cutting tool 5.
第２図は本考案に係る給油装置の他の実施例を
示したもので、この実施例によれば、ホルダー本
体側通油路２１′が、ホルダー本体１の内部中央
に凹設された穴部２１ａと、ホルダー本体１の中
央部に工具ホルダーの中心軸と斜交する方向に穿
設されていてその一端がホルダー本体フランジ部
１ａのシヤンク部４側端面に開口し且つ他端が上
記穴部２１ａ内に開口している斜孔部２１ｂと、
からなり、斜孔部２１ｂの一端開口部（基端部）
はスピンドル２の周辺側部分に設けられた給油路
３２に連通連結されている。そして、穴部２１ｂ
には前述の実施例と同様に被駆動軸１７の内方側
端部に形成された延長部１７ａがオーバラツプす
るように嵌入され、この嵌入部分の外周面と穴部
２１ａの内周面との間がシールリング２０を介し
て液密封止されている。これによつて、ホルダー
本体１の穴部２１ａと被駆動軸側通油路２２とが
同軸に連通連結され、しかして給油路３２からの
切削油は斜孔部２１ｂから穴部２１ａに入りそこ
から被駆動軸側通油路２２を通つてチヤツク６側
に送られるようになつている。この実施例ではホ
ルダー本体側通油路２１′以外の構造は第１図の
実施例と全く同一である。 FIG. 2 shows another embodiment of the oil supply device according to the present invention. According to this embodiment, the holder main body side oil passage 21' is formed by a recessed hole in the center of the holder main body 1. A portion 21a is bored in the center of the holder body 1 in a direction oblique to the central axis of the tool holder, one end of which opens on the side end surface of the shank portion 4 of the holder body flange portion 1a, and the other end opens into the hole described above. a diagonal hole portion 21b opening into the portion 21a;
One end opening (base end) of the oblique hole portion 21b
is connected to an oil supply passage 32 provided on the peripheral side of the spindle 2. And the hole 21b
As in the previous embodiment, an extension 17a formed at the inner end of the driven shaft 17 is fitted so as to overlap, and the outer circumferential surface of this fitted portion and the inner circumferential surface of the hole 21a overlap. The space between them is liquid-tightly sealed via a seal ring 20. As a result, the hole 21a of the holder main body 1 and the driven shaft side oil passage 22 are coaxially connected, and the cutting oil from the oil supply passage 32 enters the hole 21a from the oblique hole 21b. The oil is then sent to the chuck 6 side through the driven shaft side oil passage 22. In this embodiment, the structure other than the oil passage 21' on the holder main body side is completely the same as the embodiment shown in FIG.
（考案の効果）
本考案は、ホルダー本体と被駆動軸とを利用し
てそれらに通油路を貫設することによつて、工具
ホルダーの内部に給油装置を一体的に設けたもの
であるから、工具ホルダーの内部構造が増速歯車
機構に関連する伝動歯車や軸受等の存在によつて
複雑化していることにも関わらず、しかもホルダ
ー本体と被駆動軸との間で相対的に大きな回転速
度差を生じるにも関わらず、工具ホルダーを工作
機械のスピンドルに装着するこによつて自動的に
給油装置の取付けを行うことができて従来のよう
な取付操作上のわずらわしさが解消できると共
に、工具の刃先部まで効率よく的確に十分に冷却
でき、この種増速形工具ホルダーには特に有効で
ある。また、ホルダー本体側通油路と被駆動軸側
通油路とはシール部材によつて液密に連通連結さ
れているため、その連結部から外部へ切削油の漏
れ出る心配がなくなる。(Effects of the invention) The invention provides an oil supply device integrally inside the tool holder by using the holder body and the driven shaft and providing an oil passage through them. Despite the fact that the internal structure of the tool holder is complicated by the presence of transmission gears, bearings, etc. related to the speed-increasing gear mechanism, there is a relatively large gap between the holder body and the driven shaft. Despite the difference in rotational speed, by attaching the tool holder to the spindle of the machine tool, the lubrication device can be automatically installed, eliminating the hassle of conventional installation operations. At the same time, the cutting edge of the tool can be efficiently and precisely cooled sufficiently, and is particularly effective for this type of speed-up type tool holder. Further, since the holder main body side oil passage and the driven shaft side oil passage are fluid-tightly connected by the seal member, there is no fear of cutting oil leaking to the outside from the connecting portion.
第１図は本考案の一実施例を示す工具ホルダー
の一部縦断正面図、第２図は他の実施例を示す工
具ホルダーの一部縦断正面図である。
１……ホルダー本体、２……スピンドル、５…
…切削工具、６……チヤツク（工具取付部）、７
……支持部材、８……軸受、９……ストツパーピ
ン、１６……係合溝（係合部）、１７……被駆動
軸、１７ａ……延長部、１８……増速歯車機構、
２０……シールリング（シール部材）、２１……
ホルダー本体側通油路、２１ａ……穴部（ホルダ
ー本体側通油路）、２２……被駆動軸側通油路、
２９……工作機械の固定部材。
FIG. 1 is a partially longitudinal front view of a tool holder showing one embodiment of the present invention, and FIG. 2 is a partially longitudinal front view of a tool holder showing another embodiment. 1...Holder body, 2...Spindle, 5...
...Cutting tool, 6...Chuck (tool mounting part), 7
... Support member, 8 ... Bearing, 9 ... Stopper pin, 16 ... Engagement groove (engaging portion), 17 ... Driven shaft, 17a ... Extension part, 18 ... Speed increasing gear mechanism,
20... Seal ring (sealing member), 21...
Holder body side oil passage, 21a...hole (holder body side oil passage), 22...driven shaft side oil passage,
29...Fixing member of machine tool.
Claims (1)
本体と、ホルダー本体を軸受を介して回転可能に
支承する支持部材と、ホルダー本体の内部に同心
状に配置され且つ該ホルダー本体の回転が増速歯
車機構を介して伝達されるようになつていて、外
方側端部に工作取付部を有する被駆動軸と、支持
部材を工作機械の固定部材に対し非回転状態に保
持するストツパーピンと、からなる工具ホルダー
において、前記被駆動軸を内部が通油路となる中
空管軸にて形成すると共に、該中空管軸の内方側
端部に延長部を設け、該延長部をホルダー本体に
設けた通油路に嵌入させ、この嵌入部分でホルダ
ー側通油路と被駆動軸側通油路とをシール部材を
介して同軸に連通連結し、被駆動軸側通油路の先
端部を工具取付部に連通連結すると共に、ホルダ
ー側通油路の基端部をスピンドルに設けた給油路
に連通連結してなる給油装置。 A holder body that is attached to the spindle of a machine tool, a support member that rotatably supports the holder body via a bearing, and a support member that is arranged concentrically inside the holder body and that rotates the holder body through a speed increasing gear mechanism. In a tool holder, the tool holder is configured to transmit power and includes a driven shaft having a work attachment part at the outer end thereof, and a stopper pin that holds the support member in a non-rotating state with respect to a fixed member of the machine tool. , the driven shaft is formed of a hollow tube shaft whose inside becomes an oil passage, an extension part is provided at the inner end of the hollow tube shaft, and the extension part is provided in the holder body. The fitting part connects the holder side oil passage and the driven shaft side oil passage coaxially via the seal member, and connects the tip of the driven shaft side oil passage to the tool mounting part. An oil supply device in which the base end of the holder-side oil passage is connected in communication with an oil supply passage provided in the spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986168830U JPH0321879Y2 (en) | 1986-10-31 | 1986-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986168830U JPH0321879Y2 (en) | 1986-10-31 | 1986-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6374247U JPS6374247U (en) | 1988-05-18 |
| JPH0321879Y2 true JPH0321879Y2 (en) | 1991-05-13 |
Family
ID=31102072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986168830U Expired JPH0321879Y2 (en) | 1986-10-31 | 1986-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0321879Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0529803Y2 (en) * | 1988-10-14 | 1993-07-29 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847451B2 (en) * | 1979-09-21 | 1983-10-22 | 川崎製鉄株式会社 | Blowing method of bottom blowing converter |
| JPS6116243B2 (en) * | 1979-05-10 | 1986-04-28 | Lion Corp |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6026896Y2 (en) * | 1981-09-22 | 1985-08-14 | 豊田工機株式会社 | Spindle device with coolant supply function |
| JPS6116243U (en) * | 1984-07-04 | 1986-01-30 | 大昭和精機株式会社 | Rotary tool for chamfering |
-
1986
- 1986-10-31 JP JP1986168830U patent/JPH0321879Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6116243B2 (en) * | 1979-05-10 | 1986-04-28 | Lion Corp | |
| JPS5847451B2 (en) * | 1979-09-21 | 1983-10-22 | 川崎製鉄株式会社 | Blowing method of bottom blowing converter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6374247U (en) | 1988-05-18 |
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