JPH0822494B2 - Coolant shield device - Google Patents
Coolant shield deviceInfo
- Publication number
- JPH0822494B2 JPH0822494B2 JP63251772A JP25177288A JPH0822494B2 JP H0822494 B2 JPH0822494 B2 JP H0822494B2 JP 63251772 A JP63251772 A JP 63251772A JP 25177288 A JP25177288 A JP 25177288A JP H0822494 B2 JPH0822494 B2 JP H0822494B2
- Authority
- JP
- Japan
- Prior art keywords
- labyrinth
- pressure
- air
- grinding fluid
- spindle
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は新素材のセラミック加工の装置に係り特に微
細なミストや研削くずを含む場合に好適なクーラント液
シールド装置に関する。Description: TECHNICAL FIELD The present invention relates to an apparatus for ceramic processing of a new material, and particularly to a coolant liquid shield apparatus suitable for containing fine mist or grinding debris.
一般にカタログ等で防塵とされている工作機械でも主
軸部より研削液クーラントが混入する事故が現実に多発
している。Even with machine tools that are generally dust-proof in catalogs, etc., accidents in which grinding fluid coolant mixes from the main shaft have often occurred.
従来技術は、セラミック加工時に発生する微細な数μ
以下の研削くずを含んだ研削液に関しては配慮がなされ
ておらず単純に第５図に示す方法で主軸１のシールを行
うものである。５（ａ）のラビリンス部は、装置側でエ
アー配管に接続されているものの主軸停止時で圧力が0m
mAq,主軸１の回転中には、負圧になっていた。特に10,0
00rpmを越える高速主軸に関しては特にこの現象が著し
い。この為主軸シールを目的としているにもかかわらず
逆作用となっている場合もあった。従来は加工対象が金
属でありクーラント液も油性で、特にベアリングに問題
なかった。しかも切くず寸法も大きくラビリンスすき間
S2より異物が入る問題もほとんどなかった。近年新素材
としてセラミック加工が急速に広がってきたため、微細
研削くずを含んだセラミック研削液クーラントのシール
ドが加工機側で重要なポイントになる。The conventional technology uses a few μ
No consideration has been given to the following grinding liquid containing grinding waste, and the spindle 1 is simply sealed by the method shown in FIG. The labyrinth part of 5 (a) is connected to the air piping on the device side, but the pressure is 0 m when the spindle is stopped.
During the rotation of the mAq and the main shaft 1, negative pressure was obtained. Especially 10,0
This phenomenon is particularly remarkable for high-speed spindles exceeding 00 rpm. For this reason, in some cases, the purpose is to seal the main shaft, but in some cases it has an adverse effect. Conventionally, the object to be processed was a metal, and the coolant was oily, so there was no particular problem with the bearing. Moreover, the chip size is large and the labyrinth gap is large.
There was almost no problem of foreign matter entering than S 2 . Since ceramic processing has rapidly spread as a new material in recent years, the shield of ceramic grinding fluid coolant containing fine grinding debris becomes an important point on the processing machine side.
本発明の目的は、主軸とラビリンス部を完全シールす
ることにある。An object of the present invention is to completely seal the main shaft and the labyrinth portion.
上記目的は、ラビリンス部を完全にシールすることに
より達成されるが、具体的手段として（１）磁性流体シ
ールの様な物質で研削液の遮断を行う方法、（２）エア
ー等の気体又は液体をラビリンス内部より外部へ向って
突出してやる方法が考えられる。磁性流体シールでは、
研削液等との化学反応によるシール性の劣化等現時点で
は技術課題が大である。一方液体突出方法は研削液側に
別物質を加えることになり加工プロセス上問題となる。The above-mentioned object can be achieved by completely sealing the labyrinth portion. Specific means are (1) a method of shutting off the grinding fluid with a substance such as a magnetic fluid seal, and (2) a gas or liquid such as air. It is conceivable that the labyrinth is projected from the inside to the outside. With magnetic fluid seals,
At present, there are major technical issues such as deterioration of sealing performance due to chemical reaction with grinding fluid. On the other hand, in the liquid ejection method, another substance is added to the grinding fluid side, which is a problem in the processing process.
本発明ではエアーによるシールを実験データをもとに
達成させた。具体的にはラビリンス部においてシール
エアーの圧力が正圧でかつ研削液進入を防止出来る限界
値を実験で確認する。シールラビリンス列を多段とす
る。油がえしリングおよびカバーにより研削液の突入
エネルギーを減少させる。ラビリンスエアー圧配管部
へ圧力検出センサを入れエアー圧を常に保証する。装
置停止時もしみ込みによる研削液混入を防止するため一
定時間ラビリンス圧を確保する機構を持たせることによ
り本発明の目的を達成させる。In the present invention, air sealing was achieved based on experimental data. Specifically, in the labyrinth part, the seal air pressure is positive, and the limit value that can prevent the penetration of the grinding fluid is confirmed by experiments. The seal labyrinth row has multiple stages. The oil ring and cover reduce the plunging energy of the grinding fluid. A pressure detection sensor is installed in the labyrinth air pressure piping to always guarantee the air pressure. The object of the present invention is achieved by providing a mechanism for ensuring the labyrinth pressure for a certain period of time in order to prevent the mixing of the grinding fluid due to penetration even when the apparatus is stopped.
ラビリング圧が正圧でかつ一定値以上の値を必要と
することにより研削液の進入エネルギに対抗する。かつ
主軸が高速になると回転によるラビリンス内部への外部
からのエア巻込み分による研削液の混入しやすさと研削
液切りの効果とで停止時とは異なったラビリンス圧が研
削液混入防止圧となる実験で停止時60mmAq,15,000rpm回
転時20mmAqを確認した。実験時は吐出圧5kg/cm2吐出量3
0/minをラビリンス部へ向けて直撃させて求めた。（S
10.15〜0.2mm,S20.12mm）シールラビリンスを多段と
しベアリング部へのオイル冷却効果への影響外乱の防
止，万一進入した場合の保護を行う。油がえしリング
およびカバーは研削液の突入エネルギの減少と研削液の
反射等によるベアリング押え上部からの研削液しみ込み
防止。圧力検出センサによる必要ラビリンス圧の確実
な確保。万一ベアリング押え周囲に付着した研削液も
停止時しみ込みを防止するため研削液の乾そうも含めた
一定時間以上のラビリンスシール圧確保。The rabbining pressure is a positive pressure and requires a certain value or more to counteract the penetration energy of the grinding fluid. Moreover, when the spindle speed increases, the labyrinth pressure, which is different from that at the time of stopping, becomes the grinding fluid mixture prevention pressure due to the ease of mixing the grinding fluid due to the amount of air entrained from the outside into the labyrinth due to the rotation and the effect of draining the grinding fluid. In the experiment, 60 mmAq at stop and 20 mmAq at 15,000 rpm were confirmed. Discharge pressure 5 kg / cm 2 Discharge rate 3 during experiment
I asked for 0 / min to hit the labyrinth section directly. (S
(1 0.15 to 0.2 mm, S 2 0.12 mm) The seal labyrinth has multiple stages to prevent effects on the oil cooling effect on the bearings. Prevents disturbance and protects it if it should enter. The oil drain ring and cover prevent the penetration of grinding fluid from the top of the bearing retainer due to the reduction of the rush energy of the grinding fluid and the reflection of the grinding fluid. Secure the required labyrinth pressure with the pressure detection sensor. The labyrinth seal pressure is secured for a certain period of time including the drying of the grinding fluid to prevent the grinding fluid adhering to the bearing retainer from seeping in when stopped.
以下、本発明の一実施例について図面を用いて説明す
る。第１図において主軸１はベアリング４を介し本体部
３に支えられ回転する。ラビリンス押え２は寸法S2の空
間を確保してラビリンス部５（ａ）〜５（ｄ）を有して
いる。例では５（ａ）,5（ｃ）がエア供給５（ｂ）,5
（ｄ）がドレーンの構成になっている。油がえしリング
７はベアリング押え２とは寸法ｔ≧3mmを確保して配置
するT3mm未満では、毛細管現象で水膜が発生しS2部を通
って研削液がラビリンス内部へしみ込んでいく。カバー
６を空間S1にて配置しベアリング押え２の周囲からの研
削液進入を防ぐ。油がえしリング７を実施例の様に配置
するとS1からカバー内部へ進入した研削液のエネルギを
著しく減少出来る。油がえしリングを第２図の７′の様
にしてもよい。第１図において実験ではラビリンス部圧
力60mmAq（主軸停止時S2断面積換算値2.6mmAq/mm2）,20
mmAq（15,000rpm）が確保されていないと研削液は進入
した。加工装置としては従って第３図に示すラビリンス
エアー元圧とラビリンス圧の特性を確認しラビリンスエ
アー元圧を管理する方法が現実的である。もちろん限界
ラビリンス圧で使用するのではなく例えば５倍位の安全
係数を考慮するのが一般である。第４図に本発明の加工
装置の空気制御方式を示す。工作機械８への全体エアー
は全圧力検出センサ11により圧力1Pで印加される、検出
センサ９はラビリンス５へ一対一で直接配管されている
個所へ配置し工作機械側配管10はツールチャックや駆動
用エアシリンダ等への配管である。流量q,又は圧力ｐを
検出する。設定ラビリンスエアー元圧の圧力ｐまたはそ
の時の流量ｑ値以上であることを確認して装置を使用す
る。尚装置停止時には、主軸停止後一定時間必ずラビリ
ンス部５へエアーを供給した後、工作機械８を完全停止
とする。An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, the main shaft 1 is supported by a main body 3 via a bearing 4 and rotates. The labyrinth retainer 2 has labyrinth portions 5 (a) to 5 (d) with a space of dimension S 2 secured. In the example, 5 (a) and 5 (c) are air supplies 5 (b) and 5
(D) has a drain configuration. When the oil removing ring 7 is arranged with the bearing retainer 2 with a dimension t ≧ 3 mm secured below T3 mm, a water film is generated due to the capillary phenomenon and the grinding fluid permeates into the labyrinth through the S 2 portion. The cover 6 is arranged in the space S 1 to prevent the grinding fluid from entering around the bearing holder 2. By disposing the oil removing ring 7 as in the embodiment, the energy of the grinding fluid that has entered into the cover from S 1 can be significantly reduced. The oil ring may be formed as shown in 7'of FIG. In the experiment in Figure 1 labyrinth portion pressure 60MmAq (spindle stop S 2 cross-sectional area in terms of value 2.6mmAq / mm 2), 20
If mmAq (15,000 rpm) was not secured, the grinding fluid entered. As a processing apparatus, therefore, a method of controlling the labyrinth air source pressure by confirming the characteristics of the labyrinth air source pressure and the labyrinth air source pressure shown in FIG. 3 is practical. Of course, it is general to use a safety factor of, for example, about 5 times instead of using it at the limit labyrinth pressure. FIG. 4 shows an air control system of the processing apparatus of the present invention. The entire air to the machine tool 8 is applied at a pressure of 1 P by the total pressure detection sensor 11. The detection sensor 9 is arranged at a point directly connected to the labyrinth 5 one by one, and the machine tool side piping 10 is a tool chuck or a drive. This is the piping to the air cylinder for the product. The flow rate q or pressure p is detected. Use the device after confirming that the pressure is equal to or higher than the set pressure p of the labyrinth air source pressure or the flow rate q at that time. When the machine is stopped, the machine tool 8 is completely stopped after supplying air to the labyrinth portion 5 for a certain period of time after stopping the spindle.
本発明によれば、クーラント液のシールが完全に行え
るのでセラミック加工目的等の工作機械に利用出来る。
特にセラミック加工に要求される冷却用大容量クーラン
ト印加研削，砥石目づまり防止化高圧クーラント印加研
削においても十分対応出来る。According to the present invention, since the coolant can be completely sealed, it can be used in a machine tool for ceramic processing.
In particular, it can sufficiently handle large-capacity coolant application grinding required for ceramic processing and high-pressure coolant application grinding to prevent wheel clogging.
第１図は本発明の一実施例を示す縦断面図、 第２図は本発明の油がえしリング部の一実施例を示す縦
断面図、 第３図はラビリンス圧Ｐとラビリンスエアー元圧ｐとの
関係の説明図、 第４図は本発明の空気供給系を示す説明図、 第５図は従来方法を示す縦断面図である。 １……主軸、２……ベアリング押え、３……本体部、４
……ベアリング、５……ラビリンス部、６……カバー、
７……油がえしリング、８……工作機械、９……検出セ
ンサー、10……工作機械側配管、11……全圧力検出セン
サ。1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing an embodiment of the oil pick-up ring portion of the present invention, and FIG. 3 is a labyrinth pressure P and a labyrinth air source. FIG. 4 is an explanatory view of the relationship with the pressure p, FIG. 4 is an explanatory view showing the air supply system of the present invention, and FIG. 5 is a longitudinal sectional view showing a conventional method. 1 ... Spindle, 2 ... Bearing retainer, 3 ... Main body, 4
…… Bearing, 5 …… Labyrinth part, 6 …… Cover,
7 ... Oil ring, 8 ... Machine tool, 9 ... Detection sensor, 10 ... Machine tool side piping, 11 ... All pressure detection sensor.
Claims (1)
えられて高速回転するセラミック加工装置のクーラント
液シールド装置であって、前記ベアリングのベアリング
押えと主軸の間のラビリンス部にエアーを供給する手段
と該ラビリンス部に浸入したクーラント液及び前記エア
ーを排出する手段とを有し、前記ベアリング押えから主
軸先端方向の所定位置の主軸外周部に油がえしリングを
設け、且つ前記油がえしリングを覆うカバーを前記ベア
リング押えから主軸先端方向に延設して設けたことを特
徴とするクーラント液シールド装置。1. A coolant liquid shield device for a ceramic machining device, wherein a main shaft is supported by a device main body via a bearing to rotate at a high speed, and air is supplied to a labyrinth portion between a bearing retainer of the bearing and the main shaft. And a means for discharging the coolant liquid and the air that have entered the labyrinth portion, and an oil boil ring is provided on the outer peripheral portion of the spindle at a predetermined position in the tip direction of the spindle from the bearing retainer. A coolant liquid shield device, wherein a cover for covering the ring is provided extending from the bearing retainer toward the tip of the spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63251772A JPH0822494B2 (en) | 1988-10-07 | 1988-10-07 | Coolant shield device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63251772A JPH0822494B2 (en) | 1988-10-07 | 1988-10-07 | Coolant shield device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02100851A JPH02100851A (en) | 1990-04-12 |
| JPH0822494B2 true JPH0822494B2 (en) | 1996-03-06 |
Family
ID=17227691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63251772A Expired - Lifetime JPH0822494B2 (en) | 1988-10-07 | 1988-10-07 | Coolant shield device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0822494B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015016528A (en) * | 2013-07-11 | 2015-01-29 | ファナック株式会社 | Machine tool having sealing structure part in rotary part |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4897311B2 (en) | 2006-02-28 | 2012-03-14 | オークマ株式会社 | Dust-proof mechanism of main spindle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5248261A (en) * | 1975-10-16 | 1977-04-16 | Kazuo Arai | Method of treatment of water for food |
| JPS541952U (en) * | 1977-06-08 | 1979-01-08 | ||
| JPS5652626A (en) * | 1979-10-05 | 1981-05-11 | Toshiba Corp | Bearing |
| JPS62130265U (en) * | 1986-02-10 | 1987-08-17 |
-
1988
- 1988-10-07 JP JP63251772A patent/JPH0822494B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015016528A (en) * | 2013-07-11 | 2015-01-29 | ファナック株式会社 | Machine tool having sealing structure part in rotary part |
| US9709170B2 (en) | 2013-07-11 | 2017-07-18 | Fanuc Corporation | Machine tool including sealing structure in rotation unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02100851A (en) | 1990-04-12 |
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