JP5447931B2 - Machine tool cover structure - Google Patents

Machine tool cover structure Download PDF

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JP5447931B2
JP5447931B2 JP2009163023A JP2009163023A JP5447931B2 JP 5447931 B2 JP5447931 B2 JP 5447931B2 JP 2009163023 A JP2009163023 A JP 2009163023A JP 2009163023 A JP2009163023 A JP 2009163023A JP 5447931 B2 JP5447931 B2 JP 5447931B2
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cover
ceiling
covers
cross rail
tool
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JP2011016199A (en
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卓史 西本
吉祝 松本
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Okuma Corp
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Description

本発明は、立形旋盤や複合加工機等の工作機械に設けられるカバーの構造に関する。   The present invention relates to a structure of a cover provided in a machine tool such as a vertical lathe or a multi-task machine.

立形旋盤等の工作機械においては、ワークがセットされるベッド上にコラムを立設し、そのコラムの前面に水平方向のクロスレールを架設して、クロスレールの前面に左右方向（Ｘ軸方向）へ移動可能な刃物台を設け、その刃物台に、下面に工具が装着されるラムを上下方向（Ｚ軸方向）へ移動可能に設けたタイプが知られている（例えば特許文献１）。
このような工作機械においては、ベッド上の加工空間を包囲するカバーを設けて、切削液や切削屑（以下「切削液等」という）の飛散を防止している。このカバーとしては、工作機械全体を覆う形態が知られているが、上下移動する刃物台のさらに上方を覆う必要があるため、全体が大型になってしまう。刃物台の上方まで覆わずにクロスレールの高さにとどめることも考えられるが、クロスレールの前面を刃物台が左右方向へ移動するため、刃物台の左右を閉塞する構造が必要となる。そこで、特許文献２には、クロスレールの前面に、刃物台を囲むフレームを水平に取り付けて、フレーム内に、刃物台に固定される固定カバーと、その固定カバーの両側で入れ子状に結合されるスライドカバーとを設ける構造が開示されている。すなわち、刃物台の移動に追従するスライドカバーにより刃物台の左右を常に閉塞可能としたものである。 In a machine tool such as a vertical lathe, a column is erected on a bed on which a workpiece is set, a horizontal cross rail is installed on the front of the column, and a horizontal direction (X-axis direction) is set on the front of the cross rail. ) Is provided, and a type in which a ram on which a tool is mounted on the lower surface is provided so as to be movable in the vertical direction (Z-axis direction) is known (for example, Patent Document 1).
In such a machine tool, a cover surrounding the machining space on the bed is provided to prevent scattering of cutting fluid and cutting waste (hereinafter referred to as “cutting fluid and the like”). As this cover, although the form which covers the whole machine tool is known, since it is necessary to cover further upwards of the tool post which moves up and down, the whole will become large. Although it is conceivable to keep the height of the cross rail without covering the upper portion of the tool post, the tool post moves in the left-right direction on the front surface of the cross rail, so that a structure for closing the left and right sides of the tool post is required. Therefore, in Patent Document 2, a frame surrounding the tool rest is horizontally attached to the front surface of the cross rail, and a fixed cover fixed to the tool rest and nested on both sides of the fixed cover in the frame. A structure for providing a slide cover is disclosed. That is, the left and right sides of the tool rest can always be closed by the slide cover that follows the movement of the tool rest.

特開２００４−６６４３０号公報JP 2004-66430 A 実開平５−２０８５２号公報Japanese Utility Model Publication No. 5-20852

この場合、クロスレールが上下方向へ移動しないため、ベッド上で加工空間の前方に立設した前カバーの上端を後方へ折曲させてスライドカバーや刃物台の前面に当接させれば、加工空間の上方は密閉できる。しかし、クロスレールがコラムの前面で上下移動するタイプでは、前カバーの上端に対してスライドカバーや刃物台が上下方向にずれ、加工空間の密閉が失われてしまう。
一方、立形旋盤等では、比較的大きくて丸いワークの加工がよく行われる。このようなワークは、クレーン等で吊り下げてベッド上に搬入及び搬出することになるが、刃物台の左右に固定カバーやスライドカバーが設けられているため、搬出入の際にワークと干渉するおそれがある。コラムがベッド上で前後方向（Ｙ軸方向）へ移動可能であれば、コラムを後退させることで解決できるが、コラムが移動できないタイプでは、ワークの搬入ができなかったり、搬出入に時間が掛かったりする問題があった。 In this case, since the cross rail does not move in the vertical direction, if the upper end of the front cover standing up front of the processing space on the bed is bent backward and brought into contact with the front surface of the slide cover or the tool post, The upper part of the space can be sealed. However, in the type in which the cross rail moves up and down in front of the column, the slide cover and the tool post are displaced in the vertical direction with respect to the upper end of the front cover, and the sealing of the processing space is lost.
On the other hand, on a vertical lathe or the like, a relatively large and round workpiece is often processed. Such a work is suspended by a crane or the like and is carried into and out of the bed. However, since a fixed cover and a slide cover are provided on the left and right of the tool post, it interferes with the work at the time of carrying in and out. There is a fear. If the column can be moved back and forth (Y-axis direction) on the bed, it can be solved by retracting the column. However, if the column cannot be moved, it will not be possible to load or unload workpieces. There was a problem.

そこで、本発明は、クロスレールが上下方向へ移動しても加工空間の上方を確実に密閉可能となり、さらに、ワークの搬出入に干渉することがなく、コンパクトに設置可能となる工作機械のカバー構造を提供することを目的としたものである。   Therefore, the present invention provides a machine tool cover that can reliably seal the upper part of the machining space even when the cross rail moves in the vertical direction, and can be installed compactly without interfering with the loading and unloading of the workpiece. The purpose is to provide a structure.

上記目的を達成するために、請求項１に記載の発明は、ベッドの前面に、所定間隔をおいて左右に配置される前カバーと、左右方向にスライドして前カバー間の開口部を開閉可能で、開口部の閉塞状態でベッド上の加工空間の前方を覆うドアとを設けた工作機械において、加工空間の上方を覆うカバー構造であって、刃物台の左右に、前面が刃物台の前面と同一面となる縦板部と、下面が刃物台の下面と同一面となる下板部とからなる断面Ｌ字状の天井カバーを夫々設けて、ドア及び前カバーの上端をそれぞれ後方へ折曲させて天井カバーの縦板部に当接させたことを特徴とするものである。
請求項２に記載の発明は、請求項１の構成において、天井カバーの少なくとも一方を、刃物台と隣接する第１のスライド位置と、刃物台から所定距離離れる第２のスライド位置との間でクロスレールに沿ってスライド可能に設け、スライド可能な天井カバーと刃物台との間に、当該天井カバーを第１、第２のスライド位置へ任意にスライドさせる駆動機構を設けたことを特徴とするものである。
請求項３に記載の発明は、請求項２の構成において、クロスレールにおける刃物台の左右に、順に重なる複数のカバーからなり、刃物台の移動に伴って伸縮するテレスコープカバーを夫々被着し、スライド可能な天井カバーが設けられる側のテレスコープカバーを、間に位置するカバーを最外にして共有させた二組の連結構造として、最外のカバーにスライド可能な天井カバーを取り付けたことを特徴とするものである。
In order to achieve the above object, the invention according to claim 1 is characterized in that a front cover arranged on the front surface of the bed at left and right sides with a predetermined interval and an opening between the front covers are opened and closed by sliding left and right. In a machine tool provided with a door that covers the front of the processing space on the bed in a closed state of the opening, the cover structure covers the upper portion of the processing space, and the front of the tool rest is on the left and right of the tool rest. A ceiling cover with an L-shaped cross section is provided, each consisting of a vertical plate portion that is flush with the front surface, and a lower plate portion whose lower surface is flush with the bottom surface of the tool post, and the upper ends of the door and the front cover are moved backward, respectively . It is characterized by being bent and brought into contact with the vertical plate portion of the ceiling cover.
According to a second aspect of the present invention, in the configuration of the first aspect, at least one of the ceiling covers is placed between a first slide position adjacent to the tool rest and a second slide position separated from the tool rest by a predetermined distance. A drive mechanism is provided that is slidable along the cross rail, and that arbitrarily slides the ceiling cover to the first and second sliding positions between the slidable ceiling cover and the tool post. Is.
According to a third aspect of the present invention, in the configuration of the second aspect, a telescope cover that includes a plurality of covers that are sequentially overlapped on the left and right of the tool post in the cross rail and that expands and contracts as the tool post moves is attached. The slidable ceiling cover is attached to the outermost cover as two sets of joint structure with the telescope cover on the side where the slidable ceiling cover is provided sharing the outermost cover. It is characterized by.

請求項１に記載の発明によれば、天井カバーの下板部によって刃物台の左右を確実に閉塞できると共に、クロスレールが上下方向へ移動しても天井カバーの縦板部とドアとの当接は維持される。よって、加工空間の上方が確実に密閉可能となり、切削液等の飛散が効果的に防止される。而も、工作機械の高さ全体を覆う必要がないため、コンパクトに設置可能となって組立や運搬が簡単となり、コストも抑えられる。
請求項２に記載の発明によれば、請求項１の効果に加えて、コラムがベッド上で移動できないタイプであっても、天井カバーをスライドさせれば、天井カバーと干渉することなくワークが搬出入可能となる。
請求項３に記載の発明によれば、請求項２の効果に加えて、天井カバーを左右にスライドさせてもテレスコープカバーによるクロスレールの保護は維持できる。 According to the first aspect of the present invention, the left and right sides of the tool post can be reliably closed by the lower plate portion of the ceiling cover, and the contact between the vertical plate portion of the ceiling cover and the door even when the cross rail moves in the vertical direction. Contact is maintained. Therefore, the upper part of the machining space can be reliably sealed, and scattering of cutting fluid and the like is effectively prevented. However, since it is not necessary to cover the entire height of the machine tool, it can be installed in a compact manner, and assembling and transportation are simplified, and the cost can be reduced.
According to the invention described in claim 2, in addition to the effect of claim 1, even if the column cannot be moved on the bed, if the ceiling cover is slid, the work can be performed without interfering with the ceiling cover. Can be carried in and out.
According to the invention described in claim 3, in addition to the effect of claim 2, even if the ceiling cover is slid left and right, the protection of the cross rail by the telescope cover can be maintained.

立形旋盤の斜視図である。It is a perspective view of a vertical lathe. クロスレール部分の斜視図（サドルは左側）である。It is a perspective view (a saddle is the left side) of a cross rail part. クロスレール部分の斜視図（サドルは右側）である。It is a perspective view (a saddle is a right side) of a cross rail part. ワークの搬出入状態を示す斜視図である。It is a perspective view which shows the carrying in / out state of a workpiece | work. 図５におけるクロスレール部分の斜視図である。It is a perspective view of the cross rail part in FIG. クロスレールが下降した状態の立形旋盤の斜視図である。It is a perspective view of a vertical lathe in a state where the cross rail is lowered. 加工空間の密閉状態を概略で示す説明図である。It is explanatory drawing which shows schematically the sealing state of process space.

以下、本発明の実施の形態を図面に基づいて説明する。
図１は、工作機械の一例である立形旋盤の斜視図で、立形旋盤１は、ベッド２上に、上面にチャック４を有する円形のターンテーブル３を備えると共に、左右（図１の左下側を前方とする）に一対のコラム５，５を立設して、コラム５，５間の前面に、左右方向で水平なクロスレール６を、上下方向へ移動可能に架設している。また、クロスレール６の前面には、刃物台としてのサドル７が左右方向（Ｘ軸方向）へ移動可能に設けられており、サドル７の下方に、下端に図示しない工具を装着可能なラム８が、上下方向（Ｚ軸方向）へ移動可能に設けられている。これらのクロスレール６、サドル７、ラム８、ターンテーブル３等は、図示しない数値制御装置によって制御される。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a vertical lathe which is an example of a machine tool. The vertical lathe 1 includes a circular turntable 3 having a chuck 4 on an upper surface on a bed 2 and left and right (lower left in FIG. 1). A pair of columns 5 and 5 are erected on the front side), and a cross rail 6 which is horizontal in the left-right direction is installed on the front surface between the columns 5 and 5 so as to be movable in the vertical direction. Further, a saddle 7 as a tool post is provided on the front surface of the cross rail 6 so as to be movable in the left-right direction (X-axis direction), and a ram 8 on which a tool (not shown) can be mounted at the lower end below the saddle 7. Is provided so as to be movable in the vertical direction (Z-axis direction). These cross rail 6, saddle 7, ram 8, turntable 3 and the like are controlled by a numerical control device (not shown).

クロスレール６の前側において、ベッド２の前面には、所定の間隔をおいて左右に前カバー９，９が立設されている。この前カバー９の上端には、後方へ水平に伸びる天井部１０が夫々形成されている。また、ベッド２の側面には、前カバー９と連結される横カバー１１，１１が立設されて、ターンテーブル３上に加工空間１２を形成している。また、ベッド２の後面にもカバーが設けられるが、ここでのカバーは、ターンテーブル３の形状に合わせて中央部が後方へ突出する円弧状に形成された上下の分割カバー１３，１４に二分割されている。このうち下側の分割カバー１４はベッド２上に立設され、上側の分割カバー１３はクロスレール６に連結されて、クロスレール６が上下動しても常に分割カバー１３が分割カバー１４に重なって加工空間１２の後方を閉塞するようになっている。   On the front side of the cross rail 6, front covers 9 and 9 are erected on the front surface of the bed 2 on the left and right sides at a predetermined interval. At the upper end of the front cover 9, a ceiling portion 10 extending horizontally rearward is formed. Further, lateral covers 11, 11 connected to the front cover 9 are erected on the side surface of the bed 2 to form a processing space 12 on the turntable 3. Further, a cover is also provided on the rear surface of the bed 2, and the cover here is divided into two upper and lower divided covers 13, 14 formed in an arc shape whose central portion projects rearward in accordance with the shape of the turntable 3. It is divided. Of these, the lower divided cover 14 is erected on the bed 2, and the upper divided cover 13 is connected to the cross rail 6, so that the divided cover 13 always overlaps the divided cover 14 even when the cross rail 6 moves up and down. Thus, the rear of the machining space 12 is closed.

さらに、前カバー９の前方には、左右方向にスライドして前カバー９，９間の開口部１５を開閉可能な一対のドア１６，１６が設けられている。このドア１６は、窓１８を有する鉛直方向の前板部１７と、前板部１７の上縁から後方へ直角に連設されてサドル７の前面に近接し、前カバー９の天井部１０に設けたレール２０に沿って左右に案内される天井板部１９とからなる。両ドア１６，１６を閉じた状態では、開口部１５を閉塞して加工空間１２の前方と上方の前側部分とを閉塞する前カバーとなる。天井板部１９の後縁には、閉じた状態でサドル７の前面に摺接する図示しないシール部材が設けられている。
２１，２１・・は、ベッド２の左右で複数枚連続状に立設される外カバーで、前カバー９と略同じ高さを有し、平面視でクロスレール６の突出空間を含む立形旋盤１の左右両側を囲むようになっている。 Further, a pair of doors 16 and 16 are provided in front of the front cover 9 and can slide in the left-right direction to open and close the opening 15 between the front covers 9 and 9. The door 16 is connected to a vertical front plate portion 17 having a window 18 and a rear surface perpendicularly from the upper edge of the front plate portion 17 so as to be close to the front surface of the saddle 7 and to the ceiling portion 10 of the front cover 9. It consists of a ceiling plate part 19 guided to the left and right along the provided rail 20. When both the doors 16 and 16 are closed, the opening 15 is closed to provide a front cover that closes the front and upper front portion of the processing space 12. A sealing member (not shown) that slides on the front surface of the saddle 7 in a closed state is provided at the rear edge of the ceiling plate portion 19.
21 and 21 are outer covers that are erected in a continuous manner on the left and right sides of the bed 2 and have substantially the same height as the front cover 9 and include the protruding space of the cross rail 6 in plan view. The left and right sides of the lathe 1 are surrounded.

一方、クロスレール６におけるサドル７の右側には、クロスレール６の前面及び上下面を覆う横断面コ字状の３枚のカバー２２ａ〜２２ｃからなるテレスコープカバー２２が設けられている。このカバー２２ａ〜２２ｃは、図２にも示すように、サドル７に近い方が外となるように順に重なり、左端のカバー２２ａは連結板２３を介してサドル７の右側面に固定され、右端のカバー２２ｃはクロスレール６の右端に固定されている。よって、サドル７が左右にスライドすると、テレスコープカバー２２がこれに追従して伸縮することになる。   On the other hand, on the right side of the saddle 7 in the cross rail 6, a telescope cover 22 including three covers 22a to 22c having a U-shaped cross section covering the front surface and the upper and lower surfaces of the cross rail 6 is provided. As shown in FIG. 2, the covers 22 a to 22 c overlap in order so that the side closer to the saddle 7 is outside, and the left end cover 22 a is fixed to the right side surface of the saddle 7 via the connecting plate 23. The cover 22 c is fixed to the right end of the cross rail 6. Therefore, when the saddle 7 slides left and right, the telescope cover 22 extends and contracts following this.

同様に、クロスレール６におけるサドル７の左側にも、二組のテレスコープカバー２４，２５が設けられている。このテレスコープカバー２４，２５は、図３及び図５にも示すように、両テレスコープカバー２４，２５の間に向けて順に外側から重なる横断面コ字状のカバー２４ａ〜２４ｃと２５ａ〜２５ｃとからなり、両者の間に位置するカバー２６にカバー２４ｃと２５ａとを夫々連結して最外のカバー２６を共有した格好となっている。また、テレスコープカバー２４，２５のうち、左端のカバー２４ａがクロスレール６の左端に、右端のカバー２５ｃがサドル７の左側面に夫々固定されている。よって、サドル７が左右にスライドすると、テレスコープカバー２４，２５がこれに追従して伸縮することになる。   Similarly, two sets of telescope covers 24 and 25 are provided on the left side of the saddle 7 in the cross rail 6. As shown in FIGS. 3 and 5, the telescope covers 24, 25 have U-shaped cross-sectional covers 24 a to 24 c and 25 a to 25 c that are overlapped in order from the outside toward both the telescope covers 24 and 25. The cover 24c and 25a are connected to the cover 26 positioned between them, respectively, and the outermost cover 26 is shared. Of the telescope covers 24 and 25, the left end cover 24 a is fixed to the left end of the cross rail 6, and the right end cover 25 c is fixed to the left side surface of the saddle 7. Therefore, when the saddle 7 slides left and right, the telescope covers 24 and 25 expand and contract accordingly.

そして、クロスレール６におけるサドル７の左右両側には、加工空間１２の上側を閉塞する天井カバー２７，２７が設けられている。この天井カバー２７は、前後方向で前面がサドル７の前面と同一となる縦板部２８と、上下方向で下面がサドル７の下面と同一となる下板部２９とからなる横断面Ｌ字状で、右側の天井カバー２７Ｂ（以下、左右を区別する場合は左側を２７Ａ，右側を２７Ｂと称する）は、テレスコープカバー２２のうち、サドル７に連結されるカバー２２ａに取り付けられている。この取付けは、連結板２３の前方に形成した折曲部３０と、カバー２２ａの右端に設けたブラケット３１とによってカバー２２ａの前方で上下方向にフレーム３２を支持し、そのフレーム３２に縦板部２８をネジ止めすることで行われている。   Further, ceiling covers 27 and 27 for closing the upper side of the processing space 12 are provided on both the left and right sides of the saddle 7 in the cross rail 6. The ceiling cover 27 has an L-shaped cross section including a vertical plate portion 28 whose front surface is the same as the front surface of the saddle 7 in the front-rear direction and a lower plate portion 29 whose lower surface is the same as the lower surface of the saddle 7 in the vertical direction. The right ceiling cover 27B (hereinafter, when distinguishing right and left is referred to as 27A on the left side and 27B on the right side) is attached to the cover 22a of the telescope cover 22 that is connected to the saddle 7. In this attachment, the frame 32 is supported in the vertical direction in front of the cover 22a by the bent portion 30 formed in front of the connecting plate 23 and the bracket 31 provided at the right end of the cover 22a. This is done by screwing 28.

また、左側の天井カバー２７Ａは、テレスコープカバー２４，２５のうち、最外のカバー２６に取り付けられている。この取付けは、カバー２６の左右方向の中央に取り付けられて前端がＴ字状となる連結板３３と、その左右でカバー２６の端部に設けたブラケット３４，３４とによってカバー２６の前方で上下方向にフレーム３５を支持し、そのフレーム３５に縦板部２８をネジ止めすることで行われている。   The left ceiling cover 27 </ b> A is attached to the outermost cover 26 of the telescope covers 24 and 25. This attachment is made up and down in front of the cover 26 by a connecting plate 33 attached to the center of the cover 26 in the left-right direction and having a T-shaped front end and brackets 34 and 34 provided at the ends of the cover 26 on the left and right sides. The frame 35 is supported in the direction, and the vertical plate portion 28 is screwed to the frame 35.

さらに、サドル７の背面には、駆動機構としてのエアシリンダ３６が、ピストンロッド３７を左向きにした水平姿勢で連結されて、ピストンロッド３７の先端が、カバー２６の右側のブラケット３４に取付板３８を介して連結されている。すなわち、ピストンロッド３７が収縮した状態では、図１〜３に示すように、カバー２６をサドル７の左側面へ当接させて天井カバー２７Ａをサドル７に隣接する第１のスライド位置に、ピストンロッド３７が伸張した状態では、図４，５に示すように、カバー２６をサドル７から離して天井カバー２７Ａをサドル７から所定距離離間した第２のスライド位置に夫々維持させるものである。このピストンロッド３７の伸縮動作は、図示しない制御パネルでの操作によって制御装置が行う。   Further, an air cylinder 36 as a drive mechanism is connected to the back surface of the saddle 7 in a horizontal posture with the piston rod 37 facing left, and the tip of the piston rod 37 is attached to the bracket 34 on the right side of the cover 26 with a mounting plate 38. It is connected through. That is, when the piston rod 37 is contracted, the cover 26 is brought into contact with the left side surface of the saddle 7 and the ceiling cover 27A is moved to the first sliding position adjacent to the saddle 7 as shown in FIGS. When the rod 37 is extended, as shown in FIGS. 4 and 5, the cover 26 is separated from the saddle 7 and the ceiling cover 27 </ b> A is maintained at the second slide position separated from the saddle 7 by a predetermined distance. The expansion / contraction operation of the piston rod 37 is performed by the control device by an operation on a control panel (not shown).

以上の如く構成された立形旋盤１においては、ワークを搬入する場合、図４，５に示すようにサドル７を右方に移動させエアシリンダ３６のピストンロッド３７を伸長させると、前述のようにカバー２６と共に天井カバー２７Ａがクロスレール６に沿って第２のスライド位置へ移動し、サドル７との間に空間を形成する。これと同時にドア１６，１６を左右外側にスライドさせれば加工空間１２の上方が大きく開放されるため、クレーン等でワイヤー３９を介して吊り下げたワークＷを上方から搬入してチャック４上にセットすることができる。なお、カバー２６が左側に移動しても、右側のテレスコープカバー２５によってクロスレール６は覆われているので、搬入時にワイヤー３９等と干渉することがあっても損傷のおそれは低減される。   In the vertical lathe 1 configured as described above, when a workpiece is loaded, if the saddle 7 is moved to the right and the piston rod 37 of the air cylinder 36 is extended as shown in FIGS. The cover 26 </ b> A and the cover 26 </ b> A move to the second slide position along the cross rail 6 to form a space with the saddle 7. At the same time, if the doors 16 and 16 are slid to the left and right outside, the upper part of the machining space 12 is greatly opened. Therefore, the work W suspended by the crane 39 or the like via the wire 39 is carried from above and placed on the chuck 4. Can be set. Even if the cover 26 moves to the left side, the cross rail 6 is covered with the right telescope cover 25, so that the possibility of damage is reduced even if the cover 26 interferes with the wire 39 or the like.

ワークＷを搬入後、ピストンロッド３７を収縮させると、前述のようにカバー２６がサドル７の左側面に当接するまで移動し、天井カバー２７Ａをサドル７と隣接する第１のスライド位置に復帰させる。これと同時にドア１６，１６を左右内側にスライドさせて開口部１５を閉じると、加工空間１２の上方前側部分がドア１６の天井板部１９に、上方後側部分がサドル７及びその両側の天井カバー２７の下板部２９によって覆われる。このとき天井板部１９の後縁はサドル７の前面及び天井カバー２７の縦板部２９とに摺接するため、加工空間１２上方のシールは維持される。この摺接状態は図１や図６のようにクロスレール６が上下動しても変わらないようになっている。   When the piston rod 37 is contracted after the work W is carried in, the cover 26 moves until it contacts the left side surface of the saddle 7 as described above, and the ceiling cover 27A is returned to the first slide position adjacent to the saddle 7. . At the same time, when the doors 16 and 16 are slid inwardly to close the opening 15, the upper front part of the processing space 12 is the ceiling plate part 19 of the door 16, and the upper rear part is the saddle 7 and the ceilings on both sides thereof. Covered by the lower plate portion 29 of the cover 27. At this time, since the rear edge of the ceiling plate portion 19 is in sliding contact with the front surface of the saddle 7 and the vertical plate portion 29 of the ceiling cover 27, the seal above the processing space 12 is maintained. This sliding contact state does not change even when the cross rail 6 moves up and down as shown in FIGS.

同様に、サドル７がクロスレール６に沿って左右方向へ移動した場合も、図２，３のように左右の天井カバー２７Ａ，２７Ｂはサドル７に追従して移動するため、加工空間１２上方のシールは維持される。なお、このようにサドル７が左右方向へ移動しても、テレスコープカバー２２，２４もこれに追従して伸縮動作するため、サドル７の移動を妨げない。
そして、ドア１６，１６を閉じた状態での加工空間１２は、天井カバー２７等による上方での密閉に限らず、図７に概略で示すように、前方がドア１６，１６に、後方が分割カバー１３，１４に、左右が横カバー１１に夫々覆われて密閉されるため、加工空間１２でワークＷの加工を行っても切削液等の飛散は効果的に防止される。 Similarly, when the saddle 7 moves in the left-right direction along the cross rail 6, the left and right ceiling covers 27A, 27B move following the saddle 7 as shown in FIGS. The seal is maintained. Even if the saddle 7 moves in the left-right direction in this way, the telescope covers 22 and 24 also extend and contract according to this, so that the movement of the saddle 7 is not hindered.
The processing space 12 with the doors 16 and 16 closed is not limited to the upper sealing by the ceiling cover 27 or the like, but as shown schematically in FIG. 7, the front is divided into the doors 16 and 16 and the rear is divided. Since the left and right sides of the covers 13 and 14 are covered and sealed by the horizontal cover 11, even if the workpiece W is processed in the processing space 12, scattering of cutting fluid or the like is effectively prevented.

一方、ワークＷの搬出を行う際には、搬入時と同様に、ドア１６，１６を左右外側にスライドさせると共に、サドル７を右方に移動させエアシリンダ３６のピストンロッド３７を伸長させて天井カバー２７Ａを第２のスライド位置に移動させると、加工空間１２の上方が開放される。よって、クレーン等でワークＷを上方から搬出することができる。   On the other hand, when unloading the workpiece W, the doors 16 and 16 are slid to the left and right as well as at the time of loading, and the saddle 7 is moved to the right to extend the piston rod 37 of the air cylinder 36 to the ceiling. When the cover 27A is moved to the second slide position, the upper portion of the processing space 12 is opened. Therefore, the workpiece W can be carried out from above with a crane or the like.

このように、上記形態の立形旋盤１のカバー構造によれば、サドル７の左右に、前面がサドル７の前面と同一面となる縦板部２８と、下面がサドル７の下面と同一面となる下板部２９とからなる断面Ｌ字状の天井カバー２７，２７を夫々設けて、ドア１６の天井板部１９を天井カバー２７の縦板部２８に当接させたことで、天井カバー２７の下板部２９によってサドル７の左右を確実に閉塞できると共に、クロスレール６が上下方向へ移動しても天井カバー２７の縦板部２８と天井板部１９との当接は維持される。よって、加工空間１２の上方が確実に密閉可能となり、切削液等の飛散が効果的に防止される。而も、立形旋盤１の高さ全体を覆う必要がないため、コンパクトに設置可能となって組立や運搬が簡単となり、コストも抑えられる。   Thus, according to the cover structure of the vertical lathe 1 of the above-described form, the vertical plate portion 28 whose front surface is flush with the front surface of the saddle 7 on the left and right sides of the saddle 7, and the lower surface is flush with the lower surface of the saddle 7. Ceiling covers 27 and 27 each having an L-shaped cross section comprising a lower plate portion 29 to be provided are provided, and the ceiling plate portion 19 of the door 16 is brought into contact with the vertical plate portion 28 of the ceiling cover 27. 27, the left and right sides of the saddle 7 can be reliably closed, and the contact between the vertical plate portion 28 of the ceiling cover 27 and the ceiling plate portion 19 is maintained even when the cross rail 6 moves in the vertical direction. . Therefore, the upper part of the machining space 12 can be reliably sealed, and scattering of cutting fluid or the like is effectively prevented. In addition, since it is not necessary to cover the entire height of the vertical lathe 1, it can be installed in a compact manner, and assembling and transportation are simplified, and the cost can be reduced.

特にここでは、左側の天井カバー２７Ａを、サドル７と隣接する第１のスライド位置と、サドル７から所定距離離れる第２のスライド位置との間でクロスレール６に沿ってスライド可能に設け、天井カバー２７Ａとサドル７との間に、当該天井カバー２７Ａを第１、第２のスライド位置へ任意にスライドさせるエアシリンダ３６を設けたことで、コラム５がベッド２上で移動できないタイプであっても、天井カバー２７と干渉することなくワークＷが搬出入可能となる。   In particular, here, the left ceiling cover 27A is provided so as to be slidable along the cross rail 6 between a first slide position adjacent to the saddle 7 and a second slide position separated from the saddle 7 by a predetermined distance. The column 5 cannot be moved on the bed 2 by providing an air cylinder 36 between the cover 27A and the saddle 7 for arbitrarily sliding the ceiling cover 27A to the first and second sliding positions. However, the workpiece W can be carried in and out without interfering with the ceiling cover 27.

さらに、クロスレール６におけるサドル７の左右に、順に重なる複数のカバーからなり、サドル７の移動に伴って伸縮するテレスコープカバー２２，２４，２５を夫々被着し、天井カバー２７Ａが設けられる側のテレスコープカバー２４，２５を、間に位置するカバー２６を最外にして共有させた二組の連結構造として、最外のカバー２６に天井カバー２７Ａを取り付けているので、天井カバー２７Ａを左右にスライドさせてもテレスコープカバー２４，２５によるクロスレール６の保護は維持できる。   Further, telescoping covers 22, 24, and 25, which are composed of a plurality of covers that are sequentially overlapped on the left and right of the saddle 7 in the cross rail 6 and extend and contract as the saddle 7 moves, are respectively attached to the ceiling cover 27 </ b> A. Since the telescopic covers 24 and 25 are two sets of connecting structures in which the cover 26 located between them is shared on the outermost side, the ceiling cover 27A is attached to the outermost cover 26. Even if it is slid, the protection of the cross rail 6 by the telescope covers 24 and 25 can be maintained.

なお、上記形態では左側の天井カバーをスライド可能としているが、右側の天井カバーであってもよいし、左右両側の天井カバーをスライド可能としてもよい。また、駆動機構としてはエアシリンダに限らず、油圧シリンダやボールねじ等の他のアクチュエータも使用できる。逆に左右両側の天井カバーを刃物台に固定してスライドできないようにすることも可能である。
さらに、天井カバーの形態も、縦板部の高さや幅等は勿論、テレスコープカバーへの連結構造も上記形態に限らず、適宜変更可能である。加えて、テレスコープカバー自体の構造も、カバーの数や重なる方向等適宜設計変更して差し支えない。但し、テレスコープカバーに連結せず、クロスレールに案内レール等を設けることで天井カバーをテレスコープカバーと独立してスライドさせることもできる。 In the above embodiment, the left ceiling cover is slidable, but the right ceiling cover may be slidable, and the left and right ceiling covers may be slidable. The drive mechanism is not limited to an air cylinder, and other actuators such as a hydraulic cylinder and a ball screw can be used. Conversely, the ceiling covers on both the left and right sides can be fixed to the tool post so that they cannot slide.
Furthermore, the form of the ceiling cover is not limited to the above-described form, but can be appropriately changed as well as the connection structure to the telescope cover as well as the height and width of the vertical plate portion. In addition, the structure of the telescope cover itself may be appropriately changed in design such as the number of covers and the overlapping direction. However, the ceiling cover can be slid independently of the telescope cover by providing a guide rail or the like on the cross rail without being connected to the telescope cover.

その他、立形旋盤も上記形態に限らず、立設されるコラムが一つであったり、一つのドアで開口部を開閉したり等、適宜変更可能である。勿論立形旋盤に限らず、これをベースにした複合加工機や門形マシニングセンタ等の他の工作機械であっても本発明は適用できる。なお、こうした他の工作機械への適用に際し、例えば門形マシニングセンタにあっては刃物台を主軸頭と呼称し、コラムが一つの立形旋盤等においてはクロスレールをクロススライドと呼称することがあるが、このような呼称の相違にかかわらず本発明に含まれることは言うまでもない。   In addition, the vertical lathe is not limited to the above-described form, and can be changed as appropriate, for example, one column is erected or the opening is opened and closed with one door. Of course, the present invention can be applied not only to a vertical lathe but also to other machine tools such as a multi-tasking machine and a portal machining center based on the lathe. In application to such other machine tools, for example, in a portal machining center, the tool post may be referred to as a spindle head, and in a vertical lathe with one column, the cross rail may be referred to as a cross slide. However, it goes without saying that it is included in the present invention regardless of the difference in the names.

１・・立形旋盤、２・・ベッド、３・・ターンテーブル、４・・チャック、５・・コラム、６・・クロスレール、７・・サドル、８・・ラム、９・・前カバー、１０・・天井部、１２・・加工空間、１５・・開口部、１６・・ドア、１７・・前板部、１９・・天井板部、２２，２４，２５・・テレスコープカバー、２６・・カバー、２７・・天井カバー、２８・・縦板部、２９・・下板部、３１，３４・・ブラケット、３６・・エアシリンダ、３７・・ピストンロッド、３９・・ワイヤー、Ｗ・・ワーク。
1 .... Vertical lathe, 2 .... Bed, 3 .... Turntable, 4 .... Chuck, 5 .... Column, 6 .... Cross rail, 7 .... Saddle, 8 .... Ram, 9 .... Front cover, 10 .... Ceiling part, 12 .... Processing space, 15 .... Opening part, 16 .... Door, 17 .... Front plate part, 19 .... Ceiling board part, 22, 24, 25 ... Telescope cover, 26. · Cover, 27 ·· Ceiling cover, 28 · · Vertical plate portion, 29 · · Lower plate portion, 31, 34 · · Bracket, 36 · · Air cylinder, 37 · · Piston rod, 39 · · Wire, W · · · work.

Claims (3)

上面にワークがセットされるベッドにコラムを立設し、そのコラムの前面に、左右方向のクロスレールを上下動可能に設け、前記クロスレールの前面に、刃物台を前記クロスレールに沿って左右方向へ移動可能に設ける一方、前記ベッドの前面に、所定間隔をおいて左右に配置される前カバーと、左右方向にスライドして前記前カバー間の開口部を開閉可能で、前記開口部の閉塞状態で前記ベッド上の加工空間の前方を覆うドアとを設けた工作機械において、前記加工空間の上方を覆うカバー構造であって、
前記刃物台の左右に、前面が前記刃物台の前面と同一面となる縦板部と、下面が前記刃物台の下面と同一面となる下板部とからなる断面Ｌ字状の天井カバーを夫々設けて、前記ドア及び前記前カバーの上端をそれぞれ後方へ折曲させて前記天井カバーの前記縦板部に当接させたことを特徴とする工作機械のカバー構造。 A column is erected on the bed where the workpiece is set on the upper surface, and a cross rail in the left-right direction is provided on the front surface of the column so as to be movable up and down. A tool post is placed on the front surface of the cross rail along the cross rail. The front cover is arranged to be movable in the direction, while the front cover is arranged on the left and right sides with a predetermined interval, and the opening between the front covers can be opened and closed by sliding in the left and right direction. In a machine tool provided with a door that covers the front of the processing space on the bed in a closed state, a cover structure that covers the top of the processing space,
On the left and right sides of the tool rest, there is an L-shaped ceiling cover having a vertical plate portion whose front surface is flush with the front surface of the tool rest and a lower plate portion whose lower face is flush with the lower surface of the tool rest. A cover structure for a machine tool, wherein the cover structure is provided respectively so that upper ends of the door and the front cover are bent rearward and brought into contact with the vertical plate portion of the ceiling cover. 前記天井カバーの少なくとも一方を、前記刃物台と隣接する第１のスライド位置と、前記刃物台から所定距離離れる第２のスライド位置との間で前記クロスレールに沿ってスライド可能に設け、前記スライド可能な前記天井カバーと刃物台との間に、当該天井カバーを前記第１、第２のスライド位置へ任意にスライドさせる駆動機構を設けたことを特徴とする請求項１に記載の工作機械のカバー構造。   At least one of the ceiling covers is slidably provided along the cross rail between a first slide position adjacent to the tool rest and a second slide position separated from the tool rest by a predetermined distance, and the slide 2. The machine tool according to claim 1, further comprising a drive mechanism that arbitrarily slides the ceiling cover to the first and second sliding positions between the possible ceiling cover and the tool post. Cover structure. 前記クロスレールにおける前記刃物台の左右に、順に重なる複数のカバーからなり、前記刃物台の移動に伴って伸縮するテレスコープカバーを夫々被着し、前記スライド可能な前記天井カバーが設けられる側の前記テレスコープカバーを、間に位置する前記カバーを最外にして共有させた二組の連結構造として、前記最外のカバーに前記スライド可能な前記天井カバーを取り付けたことを特徴とする請求項２に記載の工作機械のカバー構造。   The cross rail includes a plurality of covers that are sequentially overlapped on the left and right sides of the tool rest, and is attached with a telescope cover that expands and contracts with the movement of the tool rest, and is provided on the side where the slidable ceiling cover is provided. The slidable ceiling cover is attached to the outermost cover as two sets of connecting structures in which the telescope cover is shared with the cover located between the outermost covers. The machine tool cover structure according to 2.
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CN107791089A (en) * 2016-09-02 2018-03-13 株式会社O-M制作所 Lathe
WO2019039840A1 (en) * 2017-08-22 2019-02-28 두산공작기계 주식회사 Apparatus for covering vertical type machine tool

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CN116275336B (en) * 2023-05-18 2023-08-04 泰州市雄峰机械有限公司 Wire cutting machine tool protective outer cover convenient to install

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JPH0624847U (en) * 1992-09-01 1994-04-05 大阪機工株式会社 Ceiling covers for splash guards on machine tools
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JP4701666B2 (en) * 2004-09-30 2011-06-15 ブラザー工業株式会社 Machine Tools
JP4342474B2 (en) * 2005-05-25 2009-10-14 株式会社森精機製作所 Machine Tools

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KR101671858B1 (en) * 2015-07-17 2016-11-03 주식회사 스맥 Door system for machining center
CN107791089A (en) * 2016-09-02 2018-03-13 株式会社O-M制作所 Lathe
US10239174B2 (en) 2016-09-02 2019-03-26 O-M Ltd. Machine tool
WO2019039840A1 (en) * 2017-08-22 2019-02-28 두산공작기계 주식회사 Apparatus for covering vertical type machine tool

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