JP3519000B2 - Dust scattering prevention method and device - Google Patents
Dust scattering prevention method and deviceInfo
- Publication number
- JP3519000B2 JP3519000B2 JP26838598A JP26838598A JP3519000B2 JP 3519000 B2 JP3519000 B2 JP 3519000B2 JP 26838598 A JP26838598 A JP 26838598A JP 26838598 A JP26838598 A JP 26838598A JP 3519000 B2 JP3519000 B2 JP 3519000B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- flow
- annular member
- slit
- workpiece
- 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 - Fee Related
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- Auxiliary Devices For Machine Tools (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、工具で被加工物を
加工する際に発生する切粉、粉塵、ガス、オイルミスト
等の周囲への飛散を防止する工作機械等の粉塵防止方法
と装置に関する。さらに詳述すると、回転工具で被加工
物を切削あるいは研削加工するマシニングセンタ等の工
作機械や電極を用いて放電加工を行う形彫り放電加工機
などの加工の際に発生する切粉、粉塵、ガス、オイルミ
スト等が加工部位から飛散すること有効に防止すること
ができる工作機械等の粉塵防止方法と装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for preventing dust in machine tools, etc., for preventing scattering of cutting chips, dust, gas, oil mist, etc., generated when a workpiece is processed by a tool. Regarding More specifically, chips, dust, and gas generated during machining of a machining tool such as a machining center that cuts or grinds a workpiece with a rotary tool, and a die-sinking electric discharge machine that performs electric discharge machining using an electrode. The present invention relates to a dust prevention method and device for a machine tool or the like that can effectively prevent oil mist and the like from being scattered from a processed portion.
【０００２】[0002]
【従来の技術】工作機械、例えばマシニングセンタは、
回転工具により被加工物を所望の形状に加工するために
広く用いられるている。マシニングセンタによる加工で
は加工中に多量の切粉や粉塵を発生させ作業環境を著し
く悪化させる。そのため作業者の健康上の問題や機械の
メンテナンスの問題などに対し十分な対策を講じること
が必要である。特に放電加工の電極や放電焼結装置の型
として用いられるグラファイト材の加工やセラミック材
あるいは比較的比重の小さいアルミニューム等の被加工
物を加工する場合においては加工切粉乃至粉塵が飛散し
やすい。そこで、加工中に粉塵が空中に浮遊するのを防
ぐためフードカバーを設けるとともに粉塵を工作機械の
加工部位から吸引して集塵する大型の集塵装置を設ける
か、マシニングセンタの作業領域すべてを密閉構造のカ
バーで覆うなどの対策が取られている。2. Description of the Related Art Machine tools, such as machining centers,
It is widely used to process a work piece into a desired shape with a rotary tool. Machining with a machining center causes a large amount of chips and dust during processing, which significantly deteriorates the working environment. Therefore, it is necessary to take sufficient measures against the health problems of workers and maintenance problems of machines. Especially when machining graphite materials used as electrodes for electric discharge machining or molds of electric discharge sintering equipment, or when machining ceramic materials or workpieces such as aluminum with a relatively low specific gravity, machining chips or dust are easily scattered. . Therefore, in order to prevent dust from floating in the air during processing, a hood cover is installed and a large dust collector that sucks dust from the machined part of the machine tool to collect it, or seals the entire working area of the machining center. Measures such as covering with a structural cover are taken.
【０００３】しかしながら、前述のような工作機械の作
業スペースにフードカバーや吸引用のダクトを取付ける
方法は著しく作業性を悪くしたり、加工中に工具移動の
妨げとなり、自動化やＦＡ化を困難にする。また、工作
機械の作業領域あるいは全体をカバーで覆う密閉構造の
工作機械の場合においても、グラファイト材等の粉塵を
発生しやすい材質を加工した時には、多量に発生する粉
塵や切削粉が洗浄液と混じり合い真っ黒なスラッジがカ
バー内部の作業領域の各部に飛散し付着してしまい、加
工作業後にその除去をする清掃作業も手間がかかり、作
業効率を悪くしている。However, the method of mounting the hood cover and the suction duct in the working space of the machine tool as described above remarkably deteriorates the workability and hinders the movement of the tool during processing, which makes automation and FA difficult. To do. In addition, even in the case of a machine tool with a closed structure that covers the work area of the machine tool or the entire structure with a cover, when machining a material that easily generates dust such as graphite material, a large amount of dust or cutting powder is mixed with the cleaning liquid. Matching black sludge scatters and attaches to each part of the work area inside the cover, and cleaning work for removing the sludge after the working work is troublesome, which deteriorates work efficiency.
【０００４】そこで、加工切粉乃至粉塵の飛散防止のた
め、工作機械のスピンドルヘッドの外周上方から、スピ
ンドルに取り付けられた工具とテーブル上の被加工物を
包囲するように流体をカーテン状やシャワー状に形成
し、加工により発生する粉塵を封じ込め粉塵が空気中に
飛散して浮遊するのを防ぐ技術が知られている。その具
体的手段として、例えば、特公平７−２５００７や実開
昭６４−５６９４０号などに見られるような、工作機械
の主軸台の下端にリング状のスリットからなる洗浄液噴
射口を設置し、スピンドルに取り付けられた工具とテー
ブル上の被加工物を包囲するようにカーテン状の洗浄液
バリアを発生させるウォーターカーテン装置が提供され
ている。Therefore, in order to prevent scattering of machining chips or dust, a fluid is curtained or showered from above the outer periphery of the spindle head of the machine tool so as to surround the tool attached to the spindle and the workpiece on the table. There is known a technique of forming dust into a shape and confining dust generated by processing and preventing the dust from scattering and floating in the air. As a concrete means, for example, as shown in Japanese Examined Patent Publication No. 7-25007 and Japanese Utility Model Laid-Open No. 64-56940, a cleaning liquid injection port consisting of a ring-shaped slit is installed at the lower end of the headstock of a machine tool, and a spindle is installed. There is provided a water curtain device for generating a curtain-shaped cleaning liquid barrier so as to surround a tool attached to the table and a work piece on a table.
【０００５】また、本出願人は、前記実開昭６４−５６
９４０号のウォーターカーテン装置の問題点に鑑みて、
工具による被加工物加工で発生する切粉等を包囲すべく
機械位置に、洗浄液の供給部材に装備する多数の小孔を
列設したシャワー部材を配置し、前記各小孔から洗浄液
をガイド面に噴射してガイド面が前記噴射液を連続した
液膜にして所定方向に流出させるように構成した工作機
械のシャワー装置を実開平４−１９７４０号で提案し
た。Further, the applicant of the present invention has the above-mentioned Japanese Utility Model Application Laid-Open No. 64-56.
In view of the problems of the water curtain device of 940,
A shower member with a large number of small holes installed in the cleaning liquid supply member is arranged at the machine position so as to surround the chips generated by the processing of the workpiece with the tool, and the cleaning liquid is guided from each small hole to the guide surface. In Japanese Utility Model Laid-Open No. 19740/1992, a shower device for a machine tool was proposed in which the liquid is jetted onto the guide surface to form a continuous liquid film that flows out in a predetermined direction.
【０００６】上述の従来技術の前者の実開昭６４−５６
９４０号に記載されたウォーターカーテン装置は、実開
平４−１９７４０号で記載したように洗浄液噴射口がリ
ング状の構造を呈しているため、カーテン状の洗浄液を
形成しやすいものの、噴射流の勢いが弱いものになり、
洗浄液中に切粉、粉塵等が混入していると、リング状の
噴射口のスリットに切粉を詰まらせ均一な流体膜が破れ
てしまうことになる。また、リング状のスリット口から
洗浄液を比較的低い流速で流出させて液膜をカーテン状
に形成させるため、流体が持つ変動性分により液膜が不
安定になりやすい。したがって、スリット口から流出し
た液膜カーテンは、スリット口から被加工物までの距離
が大きくなると筒状の液体カーテンは下方向に行くほど
薄くなり僅かな外乱でカーテンの一部が崩れてしまうこ
とになる。また、マシニングセンタが縦形の場合は筒状
カーテンがある程度形成できても、横形のマシニングセ
ンタやスピンドルをテーブル面に対して傾斜させた状態
で加工を行う場合にカーテンを形成することはほとんど
不可能である。[0006] The former of the above-mentioned prior art, Japanese Utility Model Laid-Open No. 64-56
In the water curtain device described in No. 940, the cleaning liquid injection port has a ring-shaped structure as described in Japanese Utility Model Application Laid-Open No. 19740/1992. Becomes weaker,
If chips, dust, etc. are mixed in the cleaning liquid, the slits of the ring-shaped injection port will be clogged with chips and the uniform fluid film will be broken. Further, since the cleaning liquid flows out from the ring-shaped slit port at a relatively low flow rate to form the liquid film in a curtain shape, the liquid film tends to become unstable due to the variability of the fluid. Therefore, the liquid film curtain flowing out from the slit mouth becomes thinner as the distance from the slit mouth to the workpiece increases, and the tubular liquid curtain becomes thinner as it goes downward, and a part of the curtain collapses due to slight disturbance. become. Further, even if a cylindrical curtain can be formed to some extent when the machining center is vertical, it is almost impossible to form the curtain when processing is performed with the horizontal machining center or spindle tilted with respect to the table surface. .
【０００７】また、本出願人が実開平４−１９７４０号
で提案したシャワー装置は、ガイド面に噴射させて連続
した噴射流体の壁を形成し、この噴射流体壁が工具から
被加工物の外周を包囲しながら所定の方向に流下させ
て、切粉や粉塵の飛散防止するものであり、上述した問
題点をある程度解消できる。しかしながら、完全な液膜
状に噴射流体の壁が形成されるには未だ十分とは言え
ず、空中に浮遊するような微細な粉塵までをも完全に遮
断することは難しく、さらにガイド面から被加工物まで
の距離が大きくなると噴射流体の壁が形成できなくなる
という問題が残されていた。本発明は、上述の従来装置
の問題点に鑑みてなされたもので、液膜を形成する方向
がテーブル面に垂直の方向に限定されることなく、流体
の噴出口と被加工物の距離が大きくなっても安定して液
膜を形成できる工作機械等に使用する粉塵飛散防止方法
と装置を提供することを目的とする。Further, the shower device proposed by the applicant of the present invention in Japanese Utility Model Laid-Open No. 19740/1991 forms a continuous jet fluid wall by jetting the jet fluid onto the guide surface, and the jet fluid wall extends from the tool to the outer periphery of the workpiece. It is intended to prevent chips and dust from scattering in a predetermined direction while surrounding it, and the above-mentioned problems can be solved to some extent. However, it is still not sufficient to form a wall of the ejected fluid in the form of a complete liquid film, and it is difficult to completely block even fine dust that floats in the air. There remains a problem that the wall of the jet fluid cannot be formed when the distance to the work piece becomes large. The present invention has been made in view of the problems of the above-described conventional device, and the direction in which the liquid film is formed is not limited to the direction perpendicular to the table surface, and the distance between the fluid ejection port and the workpiece is An object of the present invention is to provide a dust scattering prevention method and device used for a machine tool or the like that can stably form a liquid film even if the size increases.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
の請求項１記載の本発明の方法は、工具と被加工物を包
囲するよう液体バリヤを形成して前記工具で被加工物を
加工する際に発生する切粉等の飛散を防止する粉塵飛散
防止方法において、工具保持ヘッドの下端位置に外郭環
状部材と環状部材の対向面間で設けられた環状のスリッ
ト口から液体を流出させてスリット流を形成すると共
に、前記外郭環状部材および／または環状部材の周面の
複数の溝流路を通して液体の流れ方向の乱れ成分を周方
向の周期的振動成分に変換される液流を形成し、前記ス
リット流の液膜に、前記乱れ成分を周期的振動成分に変
換した液流を重畳し、該スリット流の変動速度成分エネ
ルギーを前記液流の周期的振動成分エネルギーに変換し
て被加工物方向に液膜壁を形成することにより液体バリ
ヤを形成することを特徴とする粉塵飛散防止方法であ
る。In order to achieve the above object, the method of the present invention as set forth in claim 1, wherein a liquid barrier is formed so as to surround the tool and the work piece, and the work piece is processed by the tool. in dust scattering prevention method for preventing scattering of cutting chips or the like generated at the time of, the outer ring to the lower end position of the tool holding head
The liquid is caused to flow out from an annular slit port provided between the opposing surfaces of the annular member and the annular member to form a slit flow, and the outer annular member and / or the peripheral surface of the annular member
Circumferential disturbance components in the flow direction of liquid through multiple groove channels
Forming a periodic vibration component to the converted Ru liquid flow direction, the liquid film of the slit flow superimposes the liquid flow obtained by converting the disturbance component periodically vibrating component, the variation velocity component energy of the slit flow The method is a dust scattering prevention method characterized in that a liquid barrier is formed by converting the periodic vibration component energy of the liquid flow to form a liquid film wall in the direction of the workpiece.
【０００９】前記本発明の方法によれば、スリット口か
ら流出したスリット流に流体の乱流成分を周期的振動成
分に変換した噴流を付加することによりスリット流の液
膜の何れかの表面にフリップフロップ現象を伴う噴流が
生じる。スリット流の液膜の変動速度成分は、噴流のフ
リップフロップ現象エネルギにより吸収されて安定した
膜厚の厚いスリット流が形成される。According to the above-mentioned method of the present invention, a jet flow obtained by converting a turbulent flow component of a fluid into a periodic oscillating component is added to the slit flow flowing out from the slit port, so that it is applied to any surface of the liquid film of the slit flow. A jet flow with a flip-flop phenomenon occurs. The fluctuation velocity component of the liquid film of the slit flow is absorbed by the flip-flop phenomenon energy of the jet flow to form a stable thick slit flow.
【００１０】また、上記目的を達成するための請求項２
記載の本発明の装置は、工具と被加工物を包囲するよう
液体バリヤを形成して前記工具で被加工物を加工する際
に発生する切粉等の飛散を防止する粉塵飛散防止装置に
おいて、主軸の下端位置に取り付けられ、液体供給装置
から供給された液体を主軸と略平行な方向に被加工物に
向けて誘導する環状の外郭環状部材と、前記外郭環状部
材と略同心的に設けられ、前記外郭環状部材内面との間
に所定の間隙を隔てて外周面が対向するように配置され
た環状部材とを有し、外郭環状部材と環状部材の対向面
間にスリット流を形成するスリット口を有すると共に外
郭環状部材又は環状部材の対向面の少なくとも一方の周
面に乱れ成分を周期的振動成分に変換する溝流路の配列
されたネットワーク構造を備え、該溝流路は交差路で２
つの液流を合流させる２つの溝流路を１組とする複数組
の溝流路を有し、前記２つの溝を流れる液体が出口部で
合流して乱れ成分を周期的振動成分に変換した液流を形
成し、前記スリット流の液膜に前記液流を重畳し、これ
によって、該スリット流の変動速度成分エネルギーを前
記液流の周期的振動成分エネルギーに変換して被加工物
方向に液膜壁を形成することにより液体バリヤを形成す
ることを特徴とする粉塵飛散防止装置である。Further, claim 2 for achieving the above object.
The apparatus of the present invention described, in the dust scattering prevention device for preventing scattering of cutting chips or the like generated when processing a workpiece by said tool to form a liquid barrier to surround the tool and the workpiece, An annular outer annular member that is attached to the lower end position of the main shaft and guides the liquid supplied from the liquid supply device toward the workpiece in a direction substantially parallel to the main shaft, and is provided substantially concentrically with the outer annular member. A slit forming a slit flow between the outer annular member and the opposing surface of the annular member, the annular member being arranged so that the outer peripheral surfaces face each other with a predetermined gap between the outer annular member and the inner surface. An array of grooved channels having a mouth and converting a turbulent component into a periodic vibration component on at least one peripheral surface of the outer annular member or the facing surface of the annular member.
With a network structure that is
Plural sets with two groove channels for combining two liquid streams as one set
A liquid flow in which the liquids flowing through the two grooves merge at the outlet and the turbulent components are converted into periodic vibration components.
And superimpose the liquid flow on the liquid film of the slit flow ,
The energy of the variable velocity component of the slit flow
Workpiece to be converted into periodic vibration component energy of liquid flow
A liquid barrier by forming a liquid film wall in the direction
A dust scattering prevention device, characterized in that that.
【００１１】前記本願発明の装置によれば、スリット口
によりスリット流が形成される他に、外郭環状部材内面
と環状部材の外周面との間の間隙から膜状に液体が噴出
する。そして、その際、外郭環状部材又は環状部材の対
向面の少なくとも一方の周面に、溝流路の配列されたネ
ットワーク構造を備え、該溝流路は交差路で２つの液流
を合流させる２つの溝流路を１組とする複数の溝流路を
設け、複数の溝流路による流れ構造は、液体の流れ方向
の乱れ成分を周方向（流れと直角方向）の周期的振動成
分に変換する。即ち、複数の交差する溝流路によって形
成される構造は、液体の乱れ成分を制御しその溝流路の
流れの合流点においてフリップフロップ現象を起こし、
外郭環状部材又は環状部材の対向面の少なくとも一方の
面においてその周方向に周期的に振動させる。このフリ
ップフロップ現象を加工物に向けて形成することによ
り、通常の液膜流れの持つ不安定性がフリップフロップ
現象の周期的乱れにより吸収され、その結果その不安定
性が低下して安定した液膜壁が長い距離に渡って形成さ
れる。According to the apparatus of the present applied invention, the slit opening
In addition to the formation of the slit flow by the above, the liquid is jetted in a film shape from the gap between the inner surface of the outer annular member and the outer peripheral surface of the annular member. And at that time , the outer annular member or the pair of annular members
A grooved channel is arranged on at least one of the facing surfaces.
Equipped with a network structure, and the groove flow path is a crossing path with two liquid flows.
A plurality of grooved channels that form a set of two grooved channels that join
Provided, the flow structure due to a plurality of grooves passage converts the flow direction of the disturbance component of the liquid to periodic vibration component in the circumferential direction (the flow direction perpendicular). That is, the structure formed by a plurality of intersecting groove channels controls the turbulent component of the liquid and causes a flip-flop phenomenon at the confluence of the flow of the groove channels.
At least one of the outer annular member or the facing surface of the annular member
Its circumferential periodic manner to vibrate in the plane. By forming toward the flip-flop phenomenon pressurized Engineering product instability with the conventional liquid film flow it is absorbed by the periodic disturbance of the flip-flop phenomenon, as a result thereof unstable
A stable liquid film wall is formed over a long distance due to a decrease in the property .
【００１２】また、上記目的を達成するための請求項３
記載の本発明の装置は、請求項２において、ネットワー
ク構造の溝流路は液膜壁形成方向の線に対して線対称の
角度をなす網目構造の溝流路として形成され、該溝流路
は交差路で２つの液流を合流させる２つの溝流路を１組
とする複数組の溝流路を有し、前記２つの溝を流れる液
体が出口部で合流して乱れ成分を周期的振動成分に変換
した液流を形成し、前記スリット流の液膜に前記液流を
重畳し、液体バリヤを形成することを特徴とする粉塵飛
散防止装置である。Further, claim 3 for achieving the above object.
The described device of the present invention is the network according to claim 2.
The groove channel of the structure has line symmetry with respect to the line in the liquid film wall forming direction.
Formed as an angled grooved channel structure,
Is a set of two groove channels that join two liquid streams at the intersection
Liquid having a plurality of sets of groove flow paths, which flow through the two grooves.
The body merges at the outlet to convert the turbulence component into a periodic vibration component
To form a liquid flow, and the liquid flow to the liquid film of the slit flow.
Superimposing a dust scattering prevention device characterized that you form a liquid barrier.
【００１３】請求項３記載の本発明の装置によれば、ネ
ットワーク構造の液膜壁形成方向の線に対して線対称の
角度をなす網目状に配置された溝流路構造によって、前
記膜状に流出する液体が持つ乱れ成分を環状周方向の周
期的振動成分に変換される。即ち、言い換えれば、網目
状の溝流路のネットワーク構造によって、液体の乱れ成
分を制御しその溝流路の流れの合流点においてフリップ
フロップ現象が起され、環状部材の周方向に周期的振動
させる噴出流が作り出される。このフリップフロップ現
象を液膜流れの表面に伴うスリット流れは、通常の液膜
流れの持つ不安定性がフリップフロップ現象の周期的擾
乱に吸収され、その結果その不安定性が低下し、安定し
た液膜壁が長い距離にわたって形成される。According to the apparatus of the present invention of claim 3 Symbol placement, Ne
Of the workwork structure is axisymmetric with respect to the line of the liquid film wall formation direction.
By a groove flow path structure disposed on the mesh-like angled, the disturbance component liquids flowing into the membrane has Ru are converted into periodic vibration component of the annular circumferential direction. That is, in other words, the network structure of the mesh-like groove flow path, the flip-flop phenomenon is caused at the confluence of controlling disturbance component flow of the groove passage of liquids, periodic vibration in the circumferential direction of the annular member jet stream which is out to make. The slit flow accompanying the surface of the liquid film flow due to this flip-flop phenomenon is that the instability of the normal liquid film flow is absorbed by the periodic disturbance of the flip-flop phenomenon, and as a result, the instability is reduced and a stable liquid film flow is achieved. The wall is formed over a long distance.
【００１４】[0014]
【発明の実施の形態】以下、本発明の粉塵飛散防止方法
と装置を図面の実施例により説明する。図１は本発明の
粉塵飛散防止装置をスピンドルヘッドに取付けた状態
図、図２はスピンドルヘッドに取付られた粉塵飛散防止
装置の断面図を示し、図３は外郭環状部材と略同心に設
けられている環状部材の外周面の一部を平面図で示した
図、図４は環状部材の外周面に設けられた複数の流路の
関係を説明するための要部拡大図である。BEST MODE FOR CARRYING OUT THE INVENTION The dust scattering prevention method and apparatus of the present invention will be described below with reference to the embodiments of the drawings. 1 shows a state in which the dust scattering prevention device of the present invention is attached to a spindle head, FIG. 2 shows a sectional view of the dust scattering prevention device attached to a spindle head, and FIG. 3 is provided substantially concentric with an outer annular member. FIG. 4 is a plan view showing a part of the outer peripheral surface of the annular member, and FIG. 4 is an enlarged view of an essential part for explaining the relationship between a plurality of flow paths provided on the outer peripheral surface of the annular member.
【００１５】図１、２において、１は工作機械のスピン
ドルヘッドであり、この下面のスピンドル２の下端テー
パー穴に工具Ｔを保持する工具ホルダＴＨを装着してい
る。スピンドルヘッド１は、前記工具Ｔを高速回転させ
テーブルＴＢ上の被加工物Ｗを切削加工する際に、冷却
洗浄液（以下、クーラントという）を加工部位に噴射す
る複数のクーラント噴射ノズルＮＬをその下端に備えて
いる。そして、前記高速回転する工具Ｔによりテーブル
ＴＢ上の被加工物Ｗを切削加工している間、切粉や粉塵
が被加工物WやテーブルＴＢ及びその周辺に散乱、飛散
する。特に、グラファイトの加工時には、微細な粉塵が
空気中に漂い作業者の健康に悪影響を与えたり、電気
系、機械の送り系に障害を与える。1 and 2, reference numeral 1 is a spindle head of a machine tool, and a tool holder TH for holding a tool T is mounted in a lower end tapered hole of a spindle 2 on the lower surface of the spindle head. The spindle head 1 has a plurality of coolant injection nozzles NL for injecting a cooling cleaning liquid (hereinafter, referred to as coolant) to a processing portion when cutting the workpiece W on the table TB by rotating the tool T at a high speed. Be prepared for. Then, while the workpiece W on the table TB is being cut by the tool T that rotates at a high speed, chips and dust are scattered and scattered on the workpiece W, the table TB, and the periphery thereof. In particular, during the processing of graphite, fine dust may float in the air, adversely affecting the health of workers, and impairing the electric system and the feeding system of machines.
【００１６】そこで、前記切粉や粉塵の散乱、飛散を防
止するため本発明の粉塵飛散防止装置１０が、スピンド
ルヘッド１の下端部に図示しないボルトで取付けられて
いる。粉塵飛散防止装置１０は、図示していないクーラ
ント供給装置からクーラント供給配管３を通して供給さ
れたクーラントで液膜壁ＬＨを形成するため、スピンド
ル２の軸方向と略平行な方向で被加工物に向けてクーラ
ントを誘導する環状の外郭環状部材１１と、この外郭環
状部材１１と略同心に設けられた環状部材１２、クリア
ランス調整部材１３、保持ベース１６等で構成されてい
る。Therefore, in order to prevent the scattering and scattering of the cutting chips and dust, the dust scattering prevention device 10 of the present invention is attached to the lower end of the spindle head 1 by a bolt (not shown). Since the dust scattering prevention device 10 forms the liquid film wall LH with the coolant supplied from the coolant supply device (not shown) through the coolant supply pipe 3, the dust dispersion prevention device 10 faces the workpiece in a direction substantially parallel to the axial direction of the spindle 2. It is configured by an annular outer ring-shaped member 11 that guides the coolant, an annular member 12, a clearance adjustment member 13, a holding base 16 and the like that are provided substantially concentric with the outer ring-shaped member 11.
【００１７】図２において、粉塵飛散防止装置１０は、
スピンドルヘッド１の保持部１４の周りにボルト等で取
り外し自在に取付けられている。粉塵飛散防止装置１０
の一部を構成する外郭環状部材１１は、環状部材１２と
のクリアランスｇを調節するクリアランス調整部材１３
を有している。そして、クリアランス調整部材１３はそ
の内面１３ａと環状部材１２の外周側面１２ａとの間の
クリアランスｇを調節する部材で、クリアランスｇの幅
により形成される液膜壁ＬＨの厚さを変えることができ
る。クリアランスｇを所定の幅に固定して用いる構成の
場合は外郭環状部材１１とクリアランス調整部材１３を
一体に製作する。環状部材１２は、クリアランス調整部
材の内面１３ａと所定のクリアランスｇを隔ててその外
周側面１２ａが対向する位置に配置されるよう保持ベー
ス１６に固着されている。また、クリアランスｇの上方
に外郭環状部材１１の側壁、上壁及び保持ベース１６の
一部により液室１５が環状に形成されている。クーラン
ト供給配管３を通して供給されたクーラントは、スピン
ドルヘッド１全周の液室１５に供給され環状部材１２の
外周面とクリアランス調整部材の内面１３ａ間の開口部
（以下、スリット口という）から環状の液膜状に流出し
（以下、この流れをスリット流という）後述する環状部
材１２の外周に設けられた複数の流路を通った液流と共
に被加工物Ｗへ向けて噴出される。液室１５の容積は、
クーラント供給配管３を通して供給されるクーラントが
スピンドルヘッド１全周にわたっての供給圧力損失を起
こすことなく供給できるように充分な容積をとる。In FIG. 2, the dust scattering prevention device 10 is
It is removably attached around the holding portion 14 of the spindle head 1 with a bolt or the like. Dust scattering prevention device 10
The outer annular member 11 that constitutes a part of the clearance adjusting member 13 that adjusts the clearance g with the annular member 12
have. The clearance adjusting member 13 is a member that adjusts the clearance g between the inner surface 13a and the outer peripheral side surface 12a of the annular member 12, and can change the thickness of the liquid film wall LH formed by the width of the clearance g. . In the case of a configuration in which the clearance g is fixed to a predetermined width and used, the outer annular member 11 and the clearance adjusting member 13 are integrally manufactured. The annular member 12 is fixed to the holding base 16 so as to be arranged at a position where the outer peripheral side surface 12a faces the inner surface 13a of the clearance adjusting member with a predetermined clearance g therebetween. Further, above the clearance g, the liquid chamber 15 is formed in an annular shape by the side wall of the outer annular member 11, the upper wall and a part of the holding base 16. The coolant supplied through the coolant supply pipe 3 is supplied to the liquid chamber 15 around the entire circumference of the spindle head 1 and is annularly formed from an opening (hereinafter referred to as a slit port) between the outer peripheral surface of the annular member 12 and the inner surface 13a of the clearance adjusting member. It flows out in the form of a liquid film (hereinafter, this flow is referred to as a slit flow) and is jetted toward the workpiece W together with the liquid flow that has passed through a plurality of flow paths provided on the outer periphery of the annular member 12 described later. The volume of the liquid chamber 15 is
A sufficient volume is provided so that the coolant supplied through the coolant supply pipe 3 can be supplied without causing a supply pressure loss over the entire circumference of the spindle head 1.
【００１８】図３は環状部材１２の外周を平面にして表
わした図で全外周の一部を示している。そして、図３に
示すごとく環状部材１２の外周面にはクーラントの流路
として一方の複数の溝流路１７ａ，ｂ，ｃ・・・ｎ及び
他方の複数の溝流路１８ａ，ｂ，ｃ・・・ｎが網目状に
設けられている。一方の複数の溝流路１７ａ，ｂ，ｃ・
・・ｎのそれぞれの溝はそれぞれ平行に等間隔で設けら
れており、他方の複数の溝流路１８ａ，ｂ，ｃ・・・ｎ
も同様である。また、一方の複数の溝流路１７ａ，ｂ，
ｃ・・・ｎ及び他方の複数の溝流路１８ａ，ｂ，ｃ・・
・ｎのスピンドル軸方向の線ＳＬとなす角Ａの絶対値は
等しくスピンドル軸方向の線ＳＬ（あるいは液膜壁形成
方向の線）に対し線対称の関係にある。 FIG. 3 is a view showing the outer periphery of the annular member 12 as a plane and shows a part of the entire outer periphery. Then, as shown in FIG. 3, on the outer peripheral surface of the annular member 12, a plurality of groove channels 17a, b, c ...
The other plurality of groove channels 18a, b, c ... N are provided in a mesh shape. One of the plurality of groove flow paths 17a, b, c
..N grooves are provided in parallel at equal intervals, and the other groove channels 18a, b, c ...
Is also the same. In addition, one of the plurality of groove channels 17a, 17b,
c ... n and the other plurality of groove channels 18a, b, c ...
The absolute value of the angle A formed by the line SL in the spindle axis direction of n is equal, and is in line symmetry with the line SL in the spindle axis direction (or the line in the liquid film wall forming direction) .
【００１９】スピンドル軸方向の線ＳＬとなす角度Ａの
複数の溝流路と角度−Ａの複数の溝流路は夫々対をなし
てクーラントが合流して噴出口から流出するように図示
のごとく設けられている。一対の溝流路１７ｃと溝流路
１８ｂは、液室１５側の入口部ＩＬから供給されたクー
ラントが出口部ＯＬで合流するように設けられており、
図４下方波線で示されるように、合流部分で紙面左右方
向の周期的振動成分を持つ液流を作り出す。この周期的
振動成分を持つ液流は、出口部ＯＬのスリット口から流
出した前記スリット流に重畳され、該スリット流ととも
に全周に渡って切れ目のない筒状の液膜壁ＬＨを形成す
る。以上のように、網目構造の溝流路は、軸方向の線Ｓ
Ｌに対し一方に所定角−Ａで傾斜する一方の複数の溝流
路と他方に所定角Ａで傾斜する他方の複数の溝流路から
なり、交差路で２つの液流を合流させる２つの溝流路を
１組とする複数組の溝流路として設けられ、これによっ
て主軸の下端位置に設けられた環状のスリット口から液
体を流出させて形成したスリット流の液膜に、乱れ成分
を周期的振動成分に変換した液流を重畳し、該スリット
流の変動度成分エネルギーを前記液流の周期的振動成分
エネルギーに変換して被加工物方向に液膜壁を形成、切
粉等を包囲して加工部位から飛散を防止する液体バリヤ
を形成するものである。 [0019] a plurality of the plurality of grooves passage and angle -A line SL and the angle of A of the spindle axial groove flow path shown to flow out from the ejection outlet joins the coolant forms a respective pair It is provided as follows . Groove passage 17c and the groove passage 18 b of a pair are coolant supplied from the inlet section I L of the liquid chamber 15 side is provided so as to merge in the outlet portion OL,
As shown by the lower wavy line in FIG. 4 , a liquid flow having a periodic vibration component in the lateral direction of the paper surface is created at the confluence portion. Liquid flow with the periodic vibration component is superimposed on the slit flow flowing out from the slit opening of the outlet OL, to form a cylindrical liquid membrane wall LH unbroken I passed the entire circumference with the slit flow . As described above, the groove channel of the mesh structure has the axial line S.
One or more groove flows inclined at a predetermined angle −A to L with respect to one
From the other plurality of grooved channels inclined at a predetermined angle A to the road and the other
And the two groove channels that join the two liquid streams at the intersection
It is provided as a plurality of sets of grooved channels, which makes it possible to
Liquid from the annular slit port provided at the lower end of the spindle.
The turbulent component is formed in the slit-flow liquid film formed by flowing out the body.
Is converted into a periodic vibration component, the liquid flow is superimposed, and the slit
Flow fluctuation component energy is the periodic oscillation component of the liquid flow
Converts into energy to form and cut liquid film wall in the direction of the workpiece.
Liquid barrier that surrounds powder etc. and prevents scattering from the processed part
Is formed.
【００２０】次に、図４を用いて上述の複数の流路から
なるネットワーク構造により液膜壁ＬＨを形成する本発
明のコンセプトについて説明する。図４は図３を更に拡
大したもので複数の流路が網目状に配列されたネットワ
ーク構造の流れを示したものである。Next, the concept of the present invention for forming the liquid film wall LH by the above-mentioned network structure composed of a plurality of flow channels will be described with reference to FIG. FIG. 4 is an enlarged view of FIG. 3 and shows a flow of a network structure in which a plurality of flow paths are arranged in a mesh.
【００２１】従来の技術におけるスリット口から流出し
た液膜は下流において破断しやすくなる。その流体力学
的原因は、流体の持っている乱れ成分（変動速度成分）
に起因する。この乱れは、スリット内壁の剪断層の剥
離、剥離渦、スリット出口の空気巻き込み現象等を起こ
しスリット流れの液膜を不均一にする。その結果、液膜
が僅かな外乱により破断する。The liquid film flowing out from the slit opening in the conventional technique is easily broken at the downstream side. The hydrodynamic cause is the turbulence component (fluctuation velocity component) of the fluid.
caused by. This turbulence causes separation of the shear layer on the inner wall of the slit, separation vortex, air entrainment phenomenon at the slit outlet, and the like, and makes the liquid film of the slit flow uneven. As a result, the liquid film breaks due to slight disturbance.
【００２２】これに対し、本発明では流体の乱れを主因
とする膜厚の不均一性を均一化するために、乱れを除去
するのではなく積極的に制御された周期的乱れを発現さ
せて流れを均一化しようとするものである。そこで、乱
れの発現を周期的にするために、流体の吹き出し間の相
互作用、つまり薄い固体表面に生じる超音波振動（ラム
効果）、流れの衝突による剪断層の振動現象、剥離渦に
よる吸引特性、コアンダ効果、ネットワーク端末に現れ
る噴流の周期振動などの相互作用によって、増幅機能を
達成しているアンプのフリップフロップ現象を利用す
る。フリップフロップ現象は、複数の交差管により形成
されるネットワーク端末に現れ、噴流をその管の半径方
向に周期振動させる。この現象をもちいて、スリット流
の何れかの表面にフリップフロップ現象を伴う噴流を存
在させれば、液膜流の変動速度成分は噴流のフリップフ
ロップ現象エネルギに変換され安定したスリット流れが
形成できる。On the other hand, in the present invention, in order to equalize the nonuniformity of the film thickness mainly due to the turbulence of the fluid, the turbulence is not removed but the actively controlled periodic turbulence is expressed. It aims to make the flow uniform. Therefore, in order to make the onset of turbulence periodic, the interaction between the jets of the fluid, that is, ultrasonic vibrations (Lamb effect) that occur on the thin solid surface, the vibration phenomenon of the shear layer due to the collision of the flow, and the suction characteristics due to the separation vortex , The flip-flop phenomenon of the amplifier that achieves the amplification function is utilized by the interaction such as the Coanda effect and the periodic oscillation of the jet appearing in the network terminal. The flip-flop phenomenon appears in a network terminal formed by a plurality of intersecting pipes and causes the jet to periodically oscillate in the radial direction of the pipes. Using this phenomenon, if a jet flow accompanied by a flip-flop phenomenon is present on any surface of the slit flow, the fluctuation velocity component of the liquid film flow is converted into the flip-flop phenomenon energy of the jet flow, and a stable slit flow can be formed. .
【００２３】図４において、液室１５からクーラントが
所定の圧力で供給されているので、液室１５のクーラン
トは溝流路１８ｃに液流Ｌ１ａとして流れ、また、溝流
路１７ｂから液流Ｌ１ｂとして流れる。そして、二つの
液流Ｌ１ａとＬ１ｂは溝流路１７ｂと１８ｃが交差する
交差路Ｍ１で合流する。この時交差路Ｍ１の経路は狭く
なっているので流速が急激に上昇する。この流速変化に
伴い液流Ｌ１ａとＬ１ｂの持つ流れ方向は溝流路断面方
向の乱れ成分に変換される。交差路Ｍ１を通過した液流
Ｌ１ａとＬ１ｂの半分は溝流路１７ｂを流れ、残りの半
分は溝流路１８ｃを流れる。前者の液流は交差路Ｍ２で
溝流路１８ｂを流れてくる、流れ方向の乱れ成分を溝流
路断面方向の乱れ成分に変換された液流と合流し、交差
路Ｍ２で更に流れ方向の乱れ成分が溝流路断面方向の乱
れ成分に変換されその偏倚が増幅される。更に交差路Ｍ
２を通過した液流は、溝流路１８ｂを通って出口部の合
流点ＭＯに至る。また、溝流路１７ｃを通って流れる液
流も交差路Ｍ３で偏倚が増幅され合流点ＭＯに至る。合
流点ＭＯでは流れに略直角方向の乱れ成分比率が増加し
た２つの液流が合流し夫々の液流が持つ乱れ成分が周期
的振動成分に変換される。即ち、溝流路によって形成さ
れる流路のネットワーク構造は、液体の乱れ成分を制御
しその溝流路を流れる液流の合流点において、フリップ
フロップ現象を起こし、液流の周方向に流れを周期的に
振動させる。図示するように周期的振動流が複数の合流
部に発生し、それらの周りに流出しているスリット流と
共に膜厚の厚い液膜壁が形成される。[0023] In FIG. 4, since the coolant from the liquid chamber 15 is supplied at a predetermined pressure, the coolant in the liquid chamber 15 flows as liquid flow L1a the groove passage 18c, The groove flow
It flows as a liquid flow L1b from the path 17b. The two liquid flow L1a and L1b are merging at intersection M1 of the groove passage 17b and 18c intersect. At this time, since the route of the intersection M1 is narrow, the flow velocity rapidly increases. This flow Direction with the with the velocity change liquid flow L1a and L1b are converted into turbulence component of the groove passage cross-sectional direction. Half of the liquid flow L1a and L1b passing through the intersection M1 flows through the groove passage 17b, the other half flows through the groove passage 18c. The former liquid flow flows through the groove flow path 18b at the intersection M2, and a turbulent component in the flow direction is generated by the groove flow.
It merges with the liquid flow that has been converted into the turbulence component in the road cross-section direction, and the turbulence component in the flow direction is further converted into the turbulence component in the groove flow passage cross-section in the intersection M2, and the deviation thereof is amplified. Further the intersection M
Fluid flow passing through the 2 leads to confluence MO outlet portion through the groove passage 18b. The liquid stream flowing through the groove passage 17c also biased at intersection M3 is amplified through to confluence MO. At the confluence point MO, the two liquid flows having the increased turbulence component ratio in the direction substantially perpendicular to the flow merge and the turbulence components of the respective liquid flows are converted into periodic vibration components. That is, the network structure of the channel formed by the groove passage, at the confluence of the liquid flow through the groove passage to control the disturbance component of the liquid body, causes a flip-flop phenomenon, flows in the circumferential direction of the liquid flow To vibrate periodically. As shown in the figure, a periodic oscillatory flow is generated at a plurality of confluences, and a liquid film wall having a large film thickness is formed together with the slit flow flowing around them.
【００２４】次に前述のコンセプトに基づいて実際に製
作された粉塵飛散防止装置１０の実験例を挙げて説明す
る。実験装置ではマシニングセンタのスピンドルヘッド
の下端に図１に示すごとく粉塵飛散防止装置を取付け
た。そしてクリアランス調整部材を取付けた外郭環状部
材の内径を１８３ｍｍ、環状のクリアランス調整部材高
さを２５ｍｍ、環状部材１２の外径を１８２ｍｍとして
クリアランスｇを０．５ｍｍとした。環状部材１２の外
周には、溝の角度を１５度、溝幅２ｍｍ、深さ１ｍｍの
溝１７ａ、ｂ、ｃ・・・ｎを１００個、同様に溝１８ａ、
ｂ、ｃ・・・ｎを１００個全周に渡って図３に示すごとく
設けた。クーラント供給装置から２ｋｇ／ｃｍ２の圧力
で水溶性クーラントを毎分３０Ｌ供給した。上述の条件
でＺ軸上限リミット迄スピンドルヘッドを移動させ、粉
塵飛散防止装置の出口から被加工物の距離を５００ｍｍ
とした状態で完全な筒状液膜壁が形成されることを確認
した。Next, an experimental example of the dust scattering prevention device 10 actually manufactured based on the above concept will be described. In the experimental device, a dust scattering prevention device was attached to the lower end of the spindle head of the machining center as shown in FIG. The inner diameter of the outer annular member to which the clearance adjusting member is attached is 183 mm, the height of the annular clearance adjusting member is 25 mm, the outer diameter of the annular member 12 is 182 mm, and the clearance g is 0.5 mm. On the outer periphery of the annular member 12, there are 100 grooves 17a, b, c ... N having a groove angle of 15 degrees, a groove width of 2 mm and a depth of 1 mm, and similarly, the groove 18a,
100 b, c ... N were provided over the entire circumference as shown in FIG. 30 L of the water-soluble coolant was supplied from the coolant supply device at a pressure of 2 kg / cm 2 per minute. Under the above conditions, move the spindle head to the Z-axis upper limit, and move the workpiece distance from the exit of the dust scattering prevention device to 500 mm.
It was confirmed that a perfect tubular liquid film wall was formed under the condition.
【００２５】本発明により提供される粉塵飛散防止装置
で形成される液膜壁を略円筒状とした粉塵の飛散を包囲
する領域により角柱状にしたり多角形形状とすること
は、上述のコンセプトに基づいて外郭環状部材と環状部
材の形状を変更することで可能となる。また、本発明の
実施例では、スリット流に乱れ成分を周期的振動成分に
変換した液流をスリット流の内側から重畳する例を示し
たが、環状部材に複数の流路を設ける代わりに外郭環状
部材の内面に複数の流路を設ける構成、外郭環状部材と
環状部材の両方に複数の流路を設ける構成、さらに２重
のスリット流の間に周期的振動成分に変換した液流を噴
出する構成など、本発明が開示するスリット流の液膜に
乱れ成分を周期的振動成分に変換した液流を重畳して該
スリット流の変動速度成分エネルギーを前記液流の周期
的振動成分エネルギーに変換するという技術思想を利用
することにより例示した実施例以外の他の構成に変更も
可能である。また、本実施例ではマシニングセンタに応
用した例を示したが、例えば形彫り放電加工機で荒加工
を行った際に発生するガス及びオイルミストが空気中に
拡散するのを防止するためにも利用が可能であり、その
他粉塵、ガスやオイルミスト等が発生しそれらが拡散あ
るいは浮遊することを遮断する必要がある環境において
も本発明の液体バリアを用いることができる。なお、形
彫り放電加工機に応用する場合のようにガスが生成され
る時は液膜壁内の特定の部分に吸引口を設けて吸引する
ことが望ましい。The present invention can be a polygonal shape or a prismatic shape by the region surrounding the scattered powder dust liquid membrane wall was substantially cylindrical shape formed by dust scattering prevention device provided by the above-mentioned concept It is possible to change the shapes of the outer annular member and the annular member based on the above. Further, in the embodiment of the present invention, an example in which the liquid flow obtained by converting the turbulence component into the periodic vibration component in the slit flow is superposed from the inside of the slit flow is shown, but instead of providing a plurality of flow paths in the annular member, be provided with a plurality of channels on the inner surface of the annular member, ejecting the outer annular member and both providing a plurality of channels in the configuration of the annular member, further double slit flow liquid stream into a periodic vibration component between In the slit flow liquid film disclosed in the present invention,
Implementation disturbance component by superimposing a liquid flow that is converted to a periodic vibration component exemplified by utilizing the technical idea of converting the fluctuation velocity component energy of the slit flow periodic vibration component energy of the liquid flow Other configurations than the example are also possible. In addition, although an example of application to a machining center is shown in this embodiment, it is also used to prevent gas and oil mist generated when rough machining is performed by a die-sinking electric discharge machine from diffusing into the air. In addition, the liquid barrier of the present invention can be used even in an environment in which dust, gas, oil mist, etc. are generated and it is necessary to block the diffusion or floating thereof. When a gas is generated as in the case of applying to a die-sinking electric discharge machine, it is desirable to provide a suction port at a specific portion in the liquid film wall for suction.
【００２６】[0026]
【発明の効果】本発明の構成によれば、主軸の下端位置
に設けられた環状のスリット口から液体を流出させてス
リット流を形成し、前記スリット流の液膜に乱れ成分を
周期的振動成分に変換した液流を重畳し、該スリット流
の変化速度成分エネルギーを前記液流の周期的振動成分
エネルギーに吸収して被加工物方向に液膜壁を形成する
ことにより切粉等を包囲して加工部位から飛散を防止す
るようにしたので、従来の技術に見られるようにスリッ
ト流が持つ変動速度成分により液膜が不安定になって風
などの僅かな外乱やスリット口に切粉が詰まることによ
り破断することもなく、勢いが強く安定した液膜の厚い
液膜壁が形成でき、外部へ飛散しようとする切粉等は高
速流下するクーラントにより捕捉されやすくなる。さら
に、液膜壁を形成する方向がテーブル面に垂直な方向に
限定されることなく、液体の噴出口と被加工物の距離が
大きくなっても安定した液膜壁が形成でき、工具と被加
工物を包囲し切削加工中に発生する切粉、粉塵、ガス或
いはオイルミストを筒状液膜壁内に閉じ込めて外部に飛
散することを確実に防止することができる。According to the structure of the present invention, the liquid is discharged from the annular slit port provided at the lower end of the main shaft to form the slit flow, and the turbulent component is periodically vibrated in the liquid film of the slit flow. Surrounding chips etc. by superimposing the liquid flow converted into components and absorbing the change velocity component energy of the slit flow into the periodic vibration component energy of the liquid flow to form a liquid film wall in the direction of the workpiece. In order to prevent scattering from the processed part, the liquid film becomes unstable due to the fluctuation velocity component of the slit flow as seen in the conventional technology, and slight disturbance such as wind and chips at the slit mouth. A thick liquid film wall with a strong and stable liquid film can be formed without being broken due to clogging of the liquid, and chips and the like that are about to be scattered to the outside are easily captured by the coolant flowing at a high speed. Furthermore, the direction in which the liquid film wall is formed is not limited to the direction perpendicular to the table surface, and a stable liquid film wall can be formed even if the distance between the liquid ejection port and the workpiece increases, and the tool and the object It is possible to reliably prevent the chips, dust, gas, or oil mist that surrounds the workpiece and is generated during the cutting process from being trapped inside the tubular liquid film wall and scattered to the outside.
【図１】本発明の粉塵飛散防止装置をスピンドルヘッド
に取付けた状態図FIG. 1 is a state diagram in which the dust scattering prevention device of the present invention is attached to a spindle head.
【図２】スピンドルヘッドに取付られた粉塵飛散防止装
置の断面図FIG. 2 is a sectional view of a dust scattering prevention device attached to a spindle head.
【図３】外郭環状部材と略同心に設けられている環状部
材の外周面の一部を平面図で示した図FIG. 3 is a plan view showing a part of an outer peripheral surface of an annular member provided substantially concentric with the outer annular member.
【図４】環状部材の外周面に設けられた複数の流路の関
係を説明するための要部拡大図FIG. 4 is an enlarged view of a main part for explaining a relationship between a plurality of flow paths provided on an outer peripheral surface of an annular member.
１ スピンドルヘッド ２ スピンドル １１ 外郭環状部材 １２ 環状部材 １２ａ 環状部材外周面 １３ａ クリアランス調整部材内面 １５ 液室 １７ａ、１７ｂ、１７ｃ 溝 １８ａ、１８ｂ、１８ｃ 溝 Ｂ ベアリング Ｃ クーラント 1 Spindle head 2 spindles 11 Outer ring member 12 Annular member 12a annular member outer peripheral surface 13a Clearance adjusting member inner surface 15 liquid chamber 17a, 17b, 17c Groove 18a, 18b, 18c groove B bearing C coolant
フロントページの続き (72)発明者 堀井 清之 東京都目黒区上目黒五丁目８番15−501 号 (72)発明者 橋立 昭武 神奈川県横浜市緑区長津田町5289 株式 会社エム・シー・ソディック長津田事業 所内 (56)参考文献 特開 平７−156038（ＪＰ，Ａ) 特開 平７−51981（ＪＰ，Ａ) 実開 平４−19741（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B23Q 11/00 B23Q 11/10 Front page continued (72) Inventor Kiyoyuki Horii 5-15-501 Kameguro, Meguro-ku, Tokyo (72) Inventor Akitake Hashidate 5289 Nagatsuta-cho, Midori-ku, Yokohama-shi, Kanagawa MC Sodick Nagatsuda Co., Ltd. On-site (56) References JP-A-7-156038 (JP, A) JP-A-7-51981 (JP, A) Actual development 4-19741 (JP, U) (58) Fields investigated (Int.Cl . 7, DB name) B23Q 11/00 B23Q 11/10
Claims (3)
ヤを形成して前記工具で被加工物を加工する際に発生す
る切粉等の飛散を防止する粉塵飛散防止方法において、
工具保持ヘッドの下端位置に外郭環状部材と環状部材の
対向面間で設けられた環状のスリット口から液体を流出
させてスリット流を形成すると共に、前記外郭環状部材
および／または環状部材の周面の複数の溝流路を通して
液体の流れ方向の乱れ成分を周方向の周期的振動成分に
変換される液流を形成し、前記スリット流の液膜に、前
記乱れ成分を周期的振動成分に変換した液流を重畳し、
該スリット流の変動速度成分エネルギーを前記液流の周
期的振動成分エネルギーに変換して被加工物方向に液膜
壁を形成することにより液体バリヤを形成することを特
徴とする粉塵飛散防止方法。1. A tool and dust scattering prevention method for preventing scattering of cutting chips or the like generated when processing a workpiece by said tool to form a liquid barrier to surround the workpiece,
At the lower end position of the tool holding head ,
A liquid is caused to flow out from an annular slit port provided between the facing surfaces to form a slit flow, and the outer peripheral annular member is also provided.
And / or through a plurality of groove channels in the circumferential surface of the annular member
The turbulence component in the liquid flow direction is changed to the periodic vibration component in the circumferential direction.
Forming a liquid flow to be converted, the liquid film of the slit flow, the liquid flow obtained by converting the turbulence component into a periodic vibration component is superimposed,
A dust scattering prevention method comprising forming a liquid barrier by converting a fluctuation velocity component energy of the slit flow into a periodic vibration component energy of the liquid flow to form a liquid film wall toward a workpiece.
ヤを形成して前記工具で被加工物を加工する際に発生す
る切粉等の飛散を防止する粉塵飛散防止装置において、
主軸の下端位置に取り付けられ、液体供給装置から供給
された液体を主軸と略平行な方向に被加工物に向けて誘
導する環状の外郭環状部材と、前記外郭環状部材と略同
心的に設けられ、前記外郭環状部材内面との間に所定の
間隙を隔てて外周面が対向するように配置された環状部
材とを有し、外郭環状部材と環状部材の対向面間にスリ
ット流を形成するスリット口を有すると共に外郭環状部
材又は環状部材の対向面の少なくとも一方の周面に乱れ
成分を周期的振動成分に変換する溝流路の配列されたネ
ットワーク構造を備え、該溝流路は交差路で２つの液流
を合流させる２つの溝流路を１組とする複数組の溝流路
を有し、前記２つの溝を流れる液体が出口部で合流して
乱れ成分を周期的振動成分に変換した液流を形成し、前
記スリット流の液膜に前記液流を重畳し、これによっ
て、該スリット流の変動速度成分エネルギーを前記液流
の周期的振動成分エネルギーに変換して被加工物方向に
液膜壁を形成することにより液体バリヤを形成すること
を特徴とする粉塵飛散防止装置。2. A tool as dust scattering prevention device for preventing scattering of cutting chips or the like generated when processing a workpiece by said tool to form a liquid barrier to surround the workpiece,
An annular outer annular member that is attached to the lower end position of the main shaft and guides the liquid supplied from the liquid supply device toward the workpiece in a direction substantially parallel to the main shaft, and is provided substantially concentrically with the outer annular member. A slit forming a slit flow between the outer annular member and the opposing surface of the annular member, the annular member being arranged so that the outer peripheral surfaces face each other with a predetermined gap between the outer annular member and the inner surface. Ne of the outer annular member or at least one of the peripheral surface disturbance <br/> components of the opposing surfaces of the annular member arranged in the groove passage for converting the periodic vibration component which has a mouth
Equipped with a network structure , and the groove flow path is a crossing path with two liquid flows.
Sets of two groove channels for merging two channels
And the liquids flowing through the two grooves merge at the outlet.
A turbulent component is converted into a periodic oscillating component to form a liquid flow, and the liquid flow is superposed on the liquid film of the slit flow.
The variable velocity component energy of the slit flow to the liquid flow.
Of the periodic vibration component energy in the direction of the workpiece
A dust scattering prevention device characterized in that a liquid barrier is formed by forming a liquid film wall .
溝流路は液膜壁形成方向の線に対して線対称の角度をな
す網目構造の溝流路として形成され、該溝流路は交差路
で２つの液流を合流させる２つの溝流路を１組とする複
数組の溝流路を有し、前記２つの溝を流れる液体が出口
部で合流して乱れ成分を周期的振動成分に変換した液流
を形成し、前記スリット流の液膜に前記液流を重畳し、
液体バリヤを形成することを特徴とする粉塵飛散防止装
置。3. The network structure according to claim 2,
The groove channel has an angle of line symmetry with respect to the line in the liquid film wall forming direction.
It is formed as a grooved channel having a mesh structure, and the grooved channel is an intersection.
The two groove channels that join the two liquid streams are combined into one
It has several sets of groove channels, and the liquid flowing through the two grooves is the outlet.
Flow where turbulence components are converted into periodic vibration components by merging at the section
And superimposing the liquid flow on the liquid film of the slit flow,
Dust scattering prevention device characterized that you form a liquid barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26838598A JP3519000B2 (en) | 1998-09-22 | 1998-09-22 | Dust scattering prevention method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26838598A JP3519000B2 (en) | 1998-09-22 | 1998-09-22 | Dust scattering prevention method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000094261A JP2000094261A (en) | 2000-04-04 |
| JP3519000B2 true JP3519000B2 (en) | 2004-04-12 |
Family
ID=17457756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26838598A Expired - Fee Related JP3519000B2 (en) | 1998-09-22 | 1998-09-22 | Dust scattering prevention method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3519000B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101350135B1 (en) * | 2013-01-08 | 2014-01-08 | 여승훈 | Apparatus for generating micro-vortexs in fluid |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100404450B1 (en) * | 2001-06-07 | 2003-11-12 | 이찬훈 | A dust retirement devices of cutter |
| JP3626947B2 (en) | 2002-08-14 | 2005-03-09 | ファナック株式会社 | Machine tool chips and cutting fluid splash prevention device |
| JP6810113B2 (en) * | 2018-09-07 | 2021-01-06 | ファナック株式会社 | Machine Tools |
-
1998
- 1998-09-22 JP JP26838598A patent/JP3519000B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101350135B1 (en) * | 2013-01-08 | 2014-01-08 | 여승훈 | Apparatus for generating micro-vortexs in fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000094261A (en) | 2000-04-04 |
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