JP3729766B2 - Machine tool with a shield around the bed - Google Patents

Machine tool with a shield around the bed Download PDF

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Publication number
JP3729766B2
JP3729766B2 JP2001275234A JP2001275234A JP3729766B2 JP 3729766 B2 JP3729766 B2 JP 3729766B2 JP 2001275234 A JP2001275234 A JP 2001275234A JP 2001275234 A JP2001275234 A JP 2001275234A JP 3729766 B2 JP3729766 B2 JP 3729766B2
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JP
Japan
Prior art keywords
bed
machine tool
shielding plate
splash guard
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
Application number
JP2001275234A
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Japanese (ja)
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JP2003080439A (en
Inventor
和正 中安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Makino Milling Machine Co Ltd
Original Assignee
Makino Milling Machine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Makino Milling Machine Co Ltd filed Critical Makino Milling Machine Co Ltd
Priority to JP2001275234A priority Critical patent/JP3729766B2/en
Publication of JP2003080439A publication Critical patent/JP2003080439A/en
Application granted granted Critical
Publication of JP3729766B2 publication Critical patent/JP3729766B2/en
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  • Machine Tool Units (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、マシニングセンタ、フライス盤、旋盤、研削盤、放電加工機等の工作機械、特にベッドの周囲に遮蔽板を設けてベッドに当たる局所的な空気流を遮断した工作機械に関する。
【0002】
【従来の技術】
マシニングセンタ等の工作機械の第1の従来技術として特開平8−174376号公報がある。この公報に開示された工作機械は立形のマシニングセンタであって、ワークを固定するテーブルの周囲空間がスプラッシュガードにより覆われている。然しながら、スプラッシュガードは床面まで到達しておらず、ベッドがむき出しのままである。
【0003】
第2の従来技術として実開昭59−183340号公報に開示された工作機械は横形のマシニングセンタであり、工作機械全体をカバーで包囲して内部を恒温化して工作機械の熱変形を防止している。
【0004】
【発明が解決しようとする課題】
マシニングセンタ等の工作機械のベッドは、周囲に多数の鋳抜き穴が形成されていたり、レベリングブロックを介して床面上に設置されるために床面との間に隙間が設けられている。従って、ベッドの内部や底面を空気が流通することになり、工作機械が設置される周囲空間の熱変動の外乱を受け、熱変形し易くなっている。そのために、第1の従来技術による工作機械では、工作機械を設置する工場等の扉が開放され外気が屋内に流れ込む、冷暖房の送風の当たり具合が変化する等により工作機械の周囲空間の温度が変化すると、ベッドが熱変形して加工精度が低下する問題がある。
【0005】
第2の従来技術では工作機械の全体を覆うカバーの内部空間全体を恒温化しているために、構造が大がかりとなり、工作機械の製造コストおよびランニングコストが高くなる問題がある。
【0006】
本発明は、こうした従来技術の問題を解決することを技術課題としており、簡単な構成により、工作機械の周囲空間の空気流の温度変化や当たり具合の変化によるベッドの熱変形を防止した工作機械を提供することを目的としている。
【0007】
【課題を解決するための手段】
請求項1に記載の本発明は、ワークと工具とを相対移動させて前記ワークを加工する工作機械において、
床面に設置されるベッドと、
前記ベッド上に互いに相対移動可能に設けられる工具とワークとを含む加工領域を取り囲み、切屑や加工液の飛散を防止するスプラッシュガードと、
前記スプラッシュガードと床面との間の前記ベッドの周囲に、前記ベッドから水平方向に離間して配設され、前記ベッドへの空気流の直接的な流通を防止する遮蔽板と、
を具備することを特徴としたベッドの周囲に遮蔽板を設けた工作機械を要旨とする。
スプラッシュガードと床面との間の周囲空気にさらされているベッドのまわりを離間して遮蔽板で覆ったので、局所的なベッドへの空気流の直接的な流通がなくなり、ベッドの熱変形が起きにくい。
【0008】
【発明の実施の形態】
以下、添付図面を参照して本発明の好ましい実施形態を説明する。
先ず、図1を参照すると、工作機械11は、工場等の床面Fにレベリングブロック(図示せず)等を介して設置、固定されるベッド13、ベッド13から上方部分を覆うスプラッシュガード15を有している。図1では、スプラッシュガード15は、その正面に操作盤17およびスライドドア19a、19bを有しており、頂部には上カバー21が図示されている。工作機械11は如何なる形式の工作機械であってもよいが、一例として図1に示す工作機械11は立形の工作機械であり、ベッド13上に設けられたコラム(図示せず)、前記コラムの前面において鉛直軸線方向に移動可能に設けられた主軸頭(図示せず)、前記主軸頭に回転自在に支持された主軸(図示せず)、前記主軸に装着された工具(図示せず)、前記コラムの前方部に配設され前記ワークを取り付けるテーブル(図示せず)等を備えており、スプラッシュガード15は、これらの構成要素を含めて前記テーブルの周囲空間を包囲している。そして工具とワークとの相対移動によって加工が行われた際の切屑や加工液の飛散を防止するとともに、加工領域内が周囲空気にさらされないように保護している。
【0009】
本発明の第1の実施形態によれば、工作機械11は、ベッド13の少なくとも一部の周囲においてスプラッシュガード15と床面Fとの間に配置された遮蔽板Iを具備している。遮蔽板Iは、市販されている一定の剛性を有した板部材を用いることができる。遮蔽板Iは、断熱材を用いてもよい。更に、遮蔽板Iは、スプラッシュガード15に固定してもよいし、或いは、レベリングブロックの調整がいつでもできるように遮蔽板I自体が自立する衝立状部材を着脱容易に床面Fに配置してもよい。特に、第1の実施形態では、遮蔽板Iは、ベッド13の表面から水平方向に離間配置されており、ベッド13と遮蔽板Iとの間には空間Sが形成されている。
【0010】
以下、図2、3を参照して本発明の作用を説明する。
図2は、工作機械11が設置される周囲空間の温度が定常状態T0からΔTだけ低い温度T1の空気流がベッド13に当ったときのベッド13、空間S、遮蔽板I、周囲空間の温度分布を工作機械11の正面の一部と共に示す図である。図3は、遮蔽板Iを備えず、ベッド13が露出されている構成の場合の図2と同様の図である。図2、3を比較すると、本実施形態の工作機械11では、遮蔽板Iの空気流をさえぎる効果および空間Sの断熱効果により周囲空気流の温度変化のベッド13への影響が遮蔽板Iを備えない場合と比較して格段に小さくなっていることが理解される。
【0011】
図1、2に示す実施形態では、遮蔽板Iはベッド13から水平方向に離間配置されていたが、図4に示すようにベッド13の表面に接触するように配置する場合は断熱板を用いるとよい。この場合、第1の実施形態と比較して、周囲空間の温度変化がベッド13に大きく影響するが、遮蔽板Iを備えない場合と比較すると、その影響は格段に小さなものとなっている。また、遮蔽板Iはベッド13の周囲の全てに配置しなくとも、例えばベッド13の変形が加工精度に最も影響を及ぼすコラムが設置されている部分、工場のドアや冷暖房吹出し口に面している部分等、ベッドの一部のみに配置してもよい。
【0012】
【発明の効果】
本発明によれば、ベッドの周囲においてスプラッシュガードと床面との間にベッドから離間して遮蔽板を配置したので、ベッドに直接的に空気流が当たらず、工作機械の設置されている周囲空間の空気流の変化のベッドへの影響を可及的に小さくすることが可能となる。また、本発明ではスプラッシュガードの下側のみに遮蔽板を配置し、しかも空調設備を必要としないので、実開昭59−183340号公報に開示された工作機械と比較して、製造コストおよびランニングコストの両面にわたって低減される。更に、遮蔽板を自立する衝立状に形成することにより、既存の工作機械に対して容易に設置可能となり、またレベリングブロックの調整にもほとんど支障がない。
【図面の簡単な説明】
【図1】本発明実施形態による工作機械の略示図であり、(a)は正面図、(b)は側面図である。
【図2】工作機械が設置される周囲空間の温度が定常状態T0からΔTだけ低い温度T1の空気流がベッドに吹き付けたときのベッド、空間、遮蔽板、周囲空間の温度分布を工作機械の正面の一部と共に示す図である。
【図3】遮蔽板を備えずベッドが露出されている構成における図2と同様の図である。
【図4】遮蔽板を断熱カバーで構成してベッド表面に接触するように配置した場合の図2と同様の図である。
【符号の説明】
11…工作機械
13…ベッド
15…スプラッシュガード
F…床面
S…空間
I…遮蔽板
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a machine tool such as a machining center, a milling machine, a lathe, a grinding machine, and an electric discharge machine, and more particularly, to a machine tool provided with a shielding plate around a bed to block a local air flow hitting the bed.
[0002]
[Prior art]
As a first prior art of a machine tool such as a machining center, there is JP-A-8-174376. The machine tool disclosed in this publication is a vertical machining center, and a space around a table for fixing a workpiece is covered with a splash guard. However, the splash guard has not reached the floor and the bed is still exposed.
[0003]
The machine tool disclosed in Japanese Utility Model Publication No. 59-183340 as a second prior art is a horizontal machining center, which surrounds the entire machine tool with a cover and keeps the inside constant temperature to prevent thermal deformation of the machine tool. Yes.
[0004]
[Problems to be solved by the invention]
The bed of a machine tool such as a machining center has a large number of perforations formed in the periphery, and is provided on the floor surface via a leveling block, so that a gap is provided between the bed and the floor surface. Therefore, air flows through the inside and bottom surface of the bed, and is susceptible to thermal deformation in the surrounding space where the machine tool is installed, and is easily thermally deformed. Therefore, in the machine tool according to the first prior art, the temperature of the surrounding space of the machine tool is changed due to, for example, the door of a factory or the like where the machine tool is installed is opened and the outside air flows indoors, If it changes, there is a problem that the processing accuracy is lowered due to thermal deformation of the bed.
[0005]
In the second prior art, since the entire internal space of the cover that covers the entire machine tool is kept constant, there is a problem that the structure becomes large and the manufacturing cost and running cost of the machine tool increase.
[0006]
The present invention has a technical problem to solve such problems of the prior art, and a machine tool that prevents thermal deformation of the bed due to a change in the temperature of the air flow in the surrounding space of the machine tool and a change in the contact condition with a simple configuration. The purpose is to provide.
[0007]
[Means for Solving the Problems]
The present invention according to claim 1 is a machine tool for processing the workpiece by relatively moving the workpiece and a tool,
A bed installed on the floor;
A splash guard that surrounds a machining area including a tool and a workpiece provided on the bed so as to be movable relative to each other, and prevents scattering of chips and machining fluid;
Around the bed between the splash guard and the floor surface is disposed at a distance from each other in a horizontal direction from the bed, a shielding plate that to prevent direct flow of air flow into the bed,
The gist is a machine tool provided with a shielding plate around a bed.
The surrounding area of the bed exposed to the ambient air between the splash guard and the floor is covered with a shielding plate, eliminating direct flow of air to the local bed and thermal deformation of the bed Is hard to get up.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
First, referring to FIG. 1, a machine tool 11 includes a bed 13 that is installed and fixed on a floor F of a factory or the like via a leveling block (not shown) or the like, and a splash guard 15 that covers an upper portion from the bed 13. Have. In FIG. 1, the splash guard 15 has an operation panel 17 and slide doors 19a and 19b on the front surface, and an upper cover 21 is shown on the top. The machine tool 11 may be any type of machine tool. As an example, the machine tool 11 shown in FIG. 1 is a vertical machine tool, and includes a column (not shown) provided on a bed 13 and the column. A spindle head (not shown) movably provided in the vertical axis direction on the front surface of the spindle, a spindle (not shown) rotatably supported by the spindle head, and a tool (not shown) attached to the spindle The table includes a table (not shown) that is disposed in the front portion of the column and attaches the workpiece, and the splash guard 15 surrounds the surrounding space of the table including these components. In addition, chips and machining fluid are prevented from being scattered when machining is performed by relative movement between the tool and the workpiece, and the machining area is protected from being exposed to ambient air.
[0009]
According to the first embodiment of the present invention, the machine tool 11 includes the shielding plate I disposed between the splash guard 15 and the floor surface F around at least a part of the bed 13. As the shielding plate I, a commercially available plate member having a certain rigidity can be used. The shielding plate I may use a heat insulating material. Further, the shielding plate I may be fixed to the splash guard 15, or a screen-like member that is self-supporting so that the leveling block can be adjusted at any time is easily disposed on the floor surface F. Also good. In particular, in the first embodiment, the shielding plate I is spaced apart from the surface of the bed 13 in the horizontal direction, and a space S is formed between the bed 13 and the shielding plate I.
[0010]
The operation of the present invention will be described below with reference to FIGS.
FIG. 2 shows the bed 13, the space S, the shielding plate I, and the surrounding space when the temperature of the surrounding space in which the machine tool 11 is installed falls on the bed 13 by a temperature T 1 lower than the steady state T 0 by ΔT. It is a figure which shows temperature distribution of this with a part of front of the machine tool 11. FIG. FIG. 3 is a view similar to FIG. 2 in the case where the bed 13 is exposed without the shielding plate I. 2 and 3, in the machine tool 11 of the present embodiment, the influence of the temperature change of the ambient air flow on the bed 13 is caused by the effect of blocking the air flow of the shielding plate I and the heat insulating effect of the space S. It is understood that it is much smaller than the case without it.
[0011]
In the embodiment shown in FIGS. 1 and 2, the shielding plate I is spaced apart from the bed 13 in the horizontal direction, but a heat insulating plate is used when the shielding plate I is placed so as to contact the surface of the bed 13 as shown in FIG. 4. Good. In this case, the temperature change in the surrounding space greatly affects the bed 13 as compared with the first embodiment, but the influence is much smaller than when the shielding plate I is not provided. Even if the shielding plate I is not arranged all around the bed 13, for example, a portion where a column in which deformation of the bed 13 has the greatest effect on the machining accuracy is installed, a factory door or a cooling / heating outlet. You may arrange | position only to a part of bed, such as a part which exists.
[0012]
【The invention's effect】
According to the present invention, since the shielding plate is arranged apart from the bed between the splash guard and the floor surface around the bed, the air flow does not directly hit the bed, and the surrounding area where the machine tool is installed It is possible to minimize the influence of the change in the air flow of the space on the bed. Further, in the present invention, a shielding plate is disposed only on the lower side of the splash guard, and air conditioning equipment is not required. Therefore, compared with the machine tool disclosed in Japanese Utility Model Publication No. 59-183340, the manufacturing cost and running Reduced over both costs. Furthermore, by forming the shielding plate into a self-standing screen, it can be easily installed on an existing machine tool, and there is almost no trouble in adjusting the leveling block.
[Brief description of the drawings]
FIG. 1 is a schematic view of a machine tool according to an embodiment of the present invention, in which (a) is a front view and (b) is a side view.
FIG. 2 shows the temperature distribution of the bed, space, shielding plate, and surrounding space when an air flow having a temperature T 1 that is lower than the steady state T 0 by ΔT is blown onto the bed. It is a figure shown with a part of front of a machine.
FIG. 3 is a view similar to FIG. 2 in a configuration in which a bed is exposed without a shielding plate.
FIG. 4 is a view similar to FIG. 2 in the case where the shielding plate is formed of a heat insulating cover and arranged so as to contact the bed surface.
[Explanation of symbols]
11 ... Machine tool 13 ... Bed 15 ... Splash guard F ... Floor surface S ... Space I ... Shielding plate

Claims (1)

ワークと工具とを相対移動させて前記ワークを加工する工作機械において、
床面に設置されるベッドと、
前記ベッド上に互いに相対移動可能に設けられる工具とワークとを含む加工領域を取り囲み、切屑や加工液の飛散を防止するスプラッシュガードと、
前記スプラッシュガードと床面との間の前記ベッドの周囲に、前記ベッドから水平方向に離間して配設され、前記ベッドへの空気流の直接的な流通を防止する遮蔽板と、
を具備することを特徴としたベッドの周囲に遮蔽板を設けた工作機械。
In a machine tool that processes a workpiece by relatively moving the workpiece and a tool,
A bed installed on the floor;
A splash guard that surrounds a machining area including a tool and a workpiece provided on the bed so as to be movable relative to each other, and prevents scattering of chips and machining fluid;
Around the bed between the splash guard and the floor surface is disposed at a distance from each other in a horizontal direction from the bed, a shielding plate that to prevent direct flow of air flow into the bed,
The machine tool which provided the shielding board around the bed characterized by comprising.
JP2001275234A 2001-09-11 2001-09-11 Machine tool with a shield around the bed Expired - Fee Related JP3729766B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001275234A JP3729766B2 (en) 2001-09-11 2001-09-11 Machine tool with a shield around the bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001275234A JP3729766B2 (en) 2001-09-11 2001-09-11 Machine tool with a shield around the bed

Publications (2)

Publication Number Publication Date
JP2003080439A JP2003080439A (en) 2003-03-18
JP3729766B2 true JP3729766B2 (en) 2005-12-21

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Family Applications (1)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI394905B (en) 2009-08-28 2013-05-01 Ind Tech Res Inst Feed drive mechanism and connecting assembly thereof

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