JP3349586B2 - NC automatic lathe - Google Patents
NC automatic latheInfo
- Publication number
- JP3349586B2 JP3349586B2 JP12322494A JP12322494A JP3349586B2 JP 3349586 B2 JP3349586 B2 JP 3349586B2 JP 12322494 A JP12322494 A JP 12322494A JP 12322494 A JP12322494 A JP 12322494A JP 3349586 B2 JP3349586 B2 JP 3349586B2
- Authority
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- Japan
- Prior art keywords
- axis direction
- feed
- tool
- feed screw
- axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Description
【０００１】[0001]
【産業上の利用分野】本発明はＮＣ自動旋盤に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an NC automatic lathe.
【０００２】[0002]
【従来の技術】ＮＣ自動旋盤は、周知の如く、主軸中心
線に直交し且つ相互に直交するＸＹ両軸方向にＮＣ制御
されて移動し、複数個の工具を保持する刃物台を有し、
該刃物台は、主軸中心線に直交する平面に平行で相互に
直交して移動する第１及び第２の移動台と、該第１及び
第２の移動台の移動方向に沿って刃物台を駆動する第１
及び第２の送りねじ手段とを有する。そして、工具の切
り込み方向をＸ軸方向、工具に直交する移動方向をＹ軸
方向とし、通常、２個の送りねじ手段の送り軸方向を刃
物台のＸＹ両軸方向と一致させており、工具の特別な配
置によって送りねじ手段の向きと刃物台のＸＹ両軸方向
とが一致しない場合でも、可能な限り一致させるように
している。2. Description of the Related Art As is well known, an NC automatic lathe has a tool rest that moves under NC control in both X and Y axes directions that are orthogonal to a center axis of a spindle and that are orthogonal to each other, and that holds a plurality of tools.
The tool rest has a first and a second moving stand which are parallel to a plane perpendicular to the main shaft center line and move at right angles to each other, and a tool rest along a moving direction of the first and second moving stand. First to drive
And second feed screw means. The cutting direction of the tool is defined as the X-axis direction, and the moving direction perpendicular to the tool is defined as the Y-axis direction. Usually, the feed axis directions of the two feed screw means are made to coincide with the XY axes of the tool post. Even if the direction of the feed screw means does not coincide with the directions of the X and Y axes of the tool post by the special arrangement of the tool post, it is made to coincide as much as possible.
【０００３】[0003]
【発明が解決しようとする課題】ＮＣ自動旋盤において
は、運転することにより、送りねじ手段の送りねじが熱
膨張する。上記従来技術は、刃物台の切り込み方向及び
移動方向のＸＹ両軸方向と２個の送りねじ手段の送り軸
方向とが一致しているので、主として送りねじの熱膨張
によって刃物台のＸＹ両軸方向に誤差が生じ、工具の刃
先が切り込み方向であるＸ軸方向に変位して加工精度が
低下するという問題があった。In the NC automatic lathe, the feed screw of the feed screw means thermally expands by operation. In the above-mentioned prior art, the XY axes of the tool post are mainly matched by the thermal expansion of the feed screw because the XY directions of the cutting and moving directions of the tool post coincide with the feed axis directions of the two feed screw means. There is a problem that an error occurs in the direction, and the cutting edge of the tool is displaced in the X-axis direction, which is the cutting direction, and the machining accuracy is reduced.
【０００４】本発明の目的は、工具の切り込み方向であ
るＸ軸方向の変位をなくして加工精度の向上が図れるＮ
Ｃ自動旋盤を提供することにある。An object of the present invention is to improve the machining accuracy by eliminating displacement in the X-axis direction, which is the cutting direction of the tool.
C automatic lathe.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
の本発明の構成は、主軸中心線に直交し且つ相互に直交
するＸＹ両軸方向にＮＣ制御されて移動し、複数個の工
具を保持する刃物台を有し、該刃物台は、主軸中心線に
直交する平面に平行で相互に直交して移動する第１及び
第２の移動台と、該第１及び第２の移動台の移動方向に
沿って刃物台を駆動する第１及び第２の送りねじ手段と
を有するＮＣ自動旋盤において、前記第１及び第２の送
りねじ手段による第１及び第２の送り軸方向からなる直
交座標系と、全ての工具の切り込み方向であるＸ軸方向
とこれに直交するＹ軸方向とからなるＸＹ両軸方向の直
交座標系とは、所定の角度だけ傾斜して配置され、前記
刃物台には、複数の工具が相互に平行に配置して保持さ
れ、Ｘ軸方向が工具の切り込み方向、Ｙ軸方向が工具の
選択方向であり、第１の送りねじ手段の第１の送りねじ
の熱膨張による伸びと第２の送りねじ手段の第２の送り
ねじの熱膨張による伸びを合成した伸びが、Ｙ軸方向と
なるように第１の送りねじと第２の送りねじを配置した
ことを特徴とする。 Configuration of the present invention to achieve the above object, according to an aspect of moves are NC controlled XY two orthogonal axial directions orthogonal and mutually to spindle center line, a plurality of tool And a first and a second movable table which are parallel to a plane perpendicular to the center axis of the main shaft and move at right angles to each other, and the first and second movable tables. An NC automatic lathe having first and second feed screw means for driving the tool post along the moving direction of the tool post, wherein the first and second feed screw means use first and second feed axis directions. An orthogonal coordinate system and an orthogonal coordinate system in both XY directions including an X-axis direction, which is a cutting direction of all tools, and a Y-axis direction orthogonal thereto, are arranged to be inclined at a predetermined angle ,
The turret holds multiple tools arranged parallel to each other.
The X axis direction is the cutting direction of the tool, and the Y axis direction is
The first feed screw of the first feed screw means in the selected direction
Expansion due to thermal expansion and second feed of second feed screw means
The elongation obtained by synthesizing the elongation due to the thermal expansion of the screw is
The first feed screw and the second feed screw are arranged so as to be as follows.
【０００６】[0006]
【０００７】[0007]
【作用】ＮＣ自動旋盤を運転して主として第１及び第２
の送りねじが熱膨張すると、第１の送りねじは第１の送
り軸方向に伸び、第２の送りねじは第２の送り軸方向に
伸び、工具の刃先は第１の送り軸方向に対して傾斜した
Ｙ軸方向に前記２つの伸び量が合成された量だけ伸び
る。合成された伸びのＹ軸方向は、工具の切り込み方向
であるＸ軸方向の成分がないので、第１及び第２の送り
ねじによる熱膨張によって、工具の切り込み方向（Ｘ軸
方向）の誤差が生じない。また合成された伸びの方向
は、工具の直交方向であるＹ軸方向であり、このＹ軸方
向の誤差は工具の刃先位置が移動して芯高が変わるのみ
であり、通常の熱変位量程度の変化では、加工に実質的
な影響はない。この結果、経時的に加工寸法の安定した
高精度な加工が実現できる。By operating the NC automatic lathe, the first and second
When the feed screw is thermally expanded, the first feed screw extends in the direction of the first feed axis, the second feed screw extends in the direction of the second feed axis, and the cutting edge of the tool moves with respect to the direction of the first feed axis. The two elongation amounts extend in the inclined Y-axis direction by the combined amount. In the Y-axis direction of the combined elongation, there is no component in the X-axis direction, which is the cutting direction of the tool. Does not occur. The direction of the combined elongation is the Y-axis direction, which is the orthogonal direction of the tool, and the error in the Y-axis direction is only a change in the center height due to the movement of the cutting edge position of the tool. Changes have no substantial effect on processing. As a result, high-precision processing with stable processing dimensions over time can be realized.
【０００８】[0008]
【実施例】以下、本発明の一実施例を図１乃至図３によ
り説明する。図１及び図２に示すように、ワーク１を把
持して回転する主軸２を有する主軸台３は、主軸中心線
方向であるＺ軸方向に摺動可能にベッド４上に設けられ
ている。なお、主軸２は図示しない駆動手段で回転させ
られ、主軸台３は図示しない駆動手段でＺ軸方向に移動
させられる。主軸２の前方のベッド４上には、刃物台ベ
ース５が垂直に取付けられており、刃物台ベース５に
は、主軸中心線６上にワーク１をガイドするガイドブッ
シュ７が設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, a headstock 3 having a spindle 2 that grips and rotates a work 1 is provided on a bed 4 so as to be slidable in a Z-axis direction which is a centerline direction of the spindle. The spindle 2 is rotated by a driving unit (not shown), and the headstock 3 is moved in the Z-axis direction by a driving unit (not shown). A tool rest base 5 is vertically mounted on a bed 4 in front of the spindle 2, and the tool rest base 5 is provided with a guide bush 7 for guiding the work 1 on a spindle center line 6.
【０００９】前記刃物台ベース５の前面側には、第１の
移動台１０が主軸中心線６に直交する面に平行な第１の
送り軸方向Ａ（実施例は水平方向）に摺動可能に設けら
れ、第１の移動台１０上には第２の移動台２０が主軸中
心線６に直交する面に平行で、かつ第１の送り軸方向Ａ
に直交する第２の送り軸方向Ｂ（実施例は垂直方向）に
摺動可能に設けられている。前記刃物台ベース５には、
第１の送り軸方向Ａに配設された第１の送りねじ１１が
軸受１２を介して回転自在に支承されており、第１の送
りねじ１１は刃物台ベース５に固定された第１のモータ
１３の出力軸が連結されている。そして、第１の送りね
じ１１には、第１の移動台１０が固定された雌ねじ１４
が螺合されている。前記第１の移動台１０には、第２の
送り軸方向Ｂに配設された第２の送りねじ２１が軸受２
２を介して回転自在に支承されており、第２の送りねじ
２１は第１の移動台１０に固定された第２のモータ２３
の出力軸が連結されている。そして、第２の送りねじ２
１には、第２の移動台２０が固定された雌ねじ２４が螺
合されている。On the front side of the tool post base 5, a first moving table 10 is slidable in a first feed axis direction A (horizontal direction in the embodiment) parallel to a plane orthogonal to the spindle center line 6. And a second moving table 20 is provided on the first moving table 10 in a direction parallel to a plane orthogonal to the spindle center line 6 and in a first feed axis direction A.
Are provided so as to be slidable in a second feed axis direction B (vertical direction in the embodiment) perpendicular to the first direction. The tool rest base 5 includes:
A first feed screw 11 arranged in the first feed axis direction A is rotatably supported via a bearing 12, and the first feed screw 11 is fixed to the tool post base 5 by a first feed screw 11. The output shaft of the motor 13 is connected. The first feed screw 11 has a female screw 14 to which the first moving table 10 is fixed.
Is screwed. A second feed screw 21 disposed in the second feed axis direction B has a bearing 2 on the first movable base 10.
The second feed screw 21 is rotatably supported via a second motor 2 and a second motor 23 fixed to the first moving base 10.
Output shafts are connected. And the second feed screw 2
1, a female screw 24 to which the second moving table 20 is fixed is screwed.
【００１０】従って、第１のモータ１３が駆動して第１
の送りねじ１１が回転すると、第１及び第２の移動台１
０、２０は雌ねじ１４を介して第１の送り軸方向Ａに移
動する。第２のモータ２３が駆動して第２の送りねじ２
１が回転すると、第２の移動台２０は雌ねじ２４を介し
て第２の送り軸方向Ｂに移動する。即ち、第１及び第２
のモータ１３、２３を共に駆動させると、第２の移動台
２０は第１の送り軸方向Ａと第２の送り軸方向Ｂの合成
された方向に移動させられる。なお、前記主軸台３のＺ
軸方向の駆動、第１及び第２のモータ１３、２３は、Ｎ
Ｃ制御される。即ち、第１及び第２の移動台１０、２０
は、主軸中心線６に直交し、かつ相互に直交する第１及
び第２の送り軸方向Ａ、ＢにＮＣ制御されて移動する刃
物台３０を構成している。Therefore, the first motor 13 is driven to
When the feed screw 11 rotates, the first and second moving tables 1
0 and 20 move in the first feed axis direction A via the female screw 14. The second motor 23 is driven to drive the second feed screw 2
When 1 rotates, the second moving table 20 moves in the second feed axis direction B via the female screw 24. That is, the first and second
When both of the motors 13 and 23 are driven, the second moving table 20 is moved in the combined direction of the first feed axis direction A and the second feed axis direction B. In addition, Z of the headstock 3
The axial drive, the first and second motors 13, 23
C is controlled. That is, the first and second moving tables 10 and 20
Constitutes a tool rest 30 that moves under NC control in first and second feed axis directions A and B that are orthogonal to the spindle center line 6 and mutually orthogonal.
【００１１】刃物台３０の第２の移動台２０上には、主
軸中心線６の近傍に工具取付け板３１が固定されてお
り、工具取付け板３１には複数個（実施例は４個）の工
具３２が相互に平行に取付けられている。一般に工具３
２の切り込み方向をＸ軸方向、工具３２に直交する方向
をＹ軸方向と呼ぶので、この称呼に従って工具３２の配
置を述べると、図１の実施例では、複数の工具３２はＹ
軸方向に並べて配置され、Ｘ軸方向が工具３２の切り込
み方向、Ｙ軸方向が工具３２の選択方向となっている。
従来は、第１の送り軸方向ＡはＸ軸方向（又はＹ軸方
向）と一致し、第２の送り軸方向ＢはＹ軸方向（又はＸ
軸方向）と一致していた。しかし、本実施例は、第１の
送り軸方向ＡがＸ軸方向と４５度の角度、第２の送り軸
方向ＢがＹ軸方向と４５度の角度に傾斜して配置されて
いる。A tool mounting plate 31 is fixed on the second movable base 20 of the tool post 30 in the vicinity of the spindle center line 6, and the tool mounting plate 31 has a plurality of (four in the embodiment). Tools 32 are mounted parallel to each other. Generally tool 3
2 is referred to as an X-axis direction, and a direction orthogonal to the tool 32 is referred to as a Y-axis direction. Therefore, the arrangement of the tools 32 will be described in accordance with this name. In the embodiment of FIG.
The X-axis direction is the cutting direction of the tool 32, and the Y-axis direction is the selection direction of the tool 32.
Conventionally, the first feed axis direction A matches the X axis direction (or Y axis direction), and the second feed axis direction B is the Y axis direction (or X axis direction).
(Axial direction). However, in this embodiment, the first feed axis direction A is arranged at an angle of 45 degrees with the X axis direction, and the second feed axis direction B is arranged at an angle of 45 degrees with the Y axis direction.
【００１２】次に本実施例における加工について説明す
る。工具３２の選択は、工具３２がワーク１より離れた
状態で、刃物台３０の第２の移動台２０がＹ軸方向に移
動させられて所望の工具３２がワーク１に対向するよう
に選択される。この刃物台３０の第２の移動台２０、即
ち工具３２のＹ軸方向の移動は、第１及び第２のモータ
１３、２３が共に駆動されて行われ、前記したように第
１のモータ１３による第１の送り軸方向Ａと第２のモー
タ２３による第２の送り軸方向Ｂの移動が合成され、刃
物台３０の第２の移動台２０がＹ軸方向に移動させられ
る。工具３２の切り込み方向の制御は、刃物台３０の第
２の移動台２０がＸ軸方向に移動させられて行われる。
このＸ軸方向の制御も、前記の場合と同様に、第１のモ
ータ１３による第１の送り軸方向Ａと第２のモータ２３
による第２の送り軸方向Ｂの合成された刃物台３０の第
２の移動台２０のＸ軸方向の移動によって行われる。こ
れらの合成された移動は、周知の２軸直線補間手段によ
り容易に実現可能であることはいうまでもない。Next, the processing in this embodiment will be described. The tool 32 is selected such that the second moving table 20 of the tool rest 30 is moved in the Y-axis direction while the tool 32 is separated from the work 1 so that the desired tool 32 faces the work 1. You. The movement of the tool rest 30 in the second moving table 20, that is, the tool 32 in the Y-axis direction is performed by driving the first and second motors 13 and 23 together. The movement in the first feed axis direction A and the movement in the second feed axis direction B by the second motor 23 are combined, and the second moving table 20 of the tool rest 30 is moved in the Y axis direction. The control of the cutting direction of the tool 32 is performed by moving the second moving table 20 of the tool post 30 in the X-axis direction.
The control in the X-axis direction is also performed in the same manner as described above, in the first feed axis direction A by the first motor 13 and the second motor 23.
This is performed by the movement of the combined tool post 30 in the second feed axis direction B in the X-axis direction of the second moving platform 20. Needless to say, these combined movements can be easily realized by well-known two-axis linear interpolation means.
【００１３】ところで、ＮＣ自動旋盤を運転すると、第
１及び第２の送りねじ１１、２１が熱膨張し、更に刃物
台３０の第１の移動台１０、第２の移動台２０も熱膨張
し（以下熱膨張等という）、これらが合成されて工具３
２の先端位置が移動する。例えば、刃先の位置が図３に
示すように、第１の送りねじ１１によって第１の送り軸
方向Ａにａだけ伸び、第２の送りねじ２１によって第２
の送り軸方向Ｂにｂだけ伸びたとすると、工具３２の刃
先は第１の送り軸方向Ａに対してθ＝ｔａｎ-1（ｂ／
ａ）の方向に伸び量ａとｂが合成されたｃ＝（ａ2 ＋ｂ
2 ）1 /2だけ伸びる。通常、第１の送りねじ１１と第２
の送りねじ２１の伸びは同じ程度に生じるので、ｂ／ａ
＝１とすると、合成された伸び量ｃの方向は、第１の送
り軸方向Ａに対して４５度傾斜した方向となる。本実施
例においては、ＸＹ両軸方向に対して第１及び第２の送
り軸方向Ａ、Ｂは４５度傾斜しているので、図から明ら
かなように伸び量ｃの方向はＹ軸方向となる。By the way, when the NC automatic lathe is operated, the first and second feed screws 11 and 21 thermally expand, and further, the first movable platform 10 and the second movable platform 20 of the tool post 30 also thermally expand. (Hereinafter referred to as thermal expansion, etc.)
The tip position of No. 2 moves. For example, as shown in FIG. 3 , the position of the cutting edge is extended by a in the first feed axis direction A by the first feed screw 11, and is extended by the second feed screw 21 by the second feed screw 21.
Is extended by b in the feed axis direction B, the cutting edge of the tool 32 becomes θ = tan −1 (b /
c = (a 2 + b) where elongation amounts a and b are combined in the direction of a)
2) only 1/2 extend. Usually, the first feed screw 11 and the second
Since the elongation of the feed screw 21 occurs to the same extent, b / a
If = 1, the direction of the combined elongation amount c is a direction inclined by 45 degrees with respect to the first feed axis direction A. In the present embodiment, since the first and second feed axis directions A and B are inclined by 45 degrees with respect to the X and Y axis directions, the direction of the elongation c is equal to the Y axis direction as is apparent from the drawing. Become.
【００１４】ここで、合成された伸びｃの方向は、Ｙ軸
方向となるので、工具３２の切り込み方向であるＸ軸方
向の成分がなく、第１及び第２の送りねじ１１、２１に
よる熱膨張によって、工具３２の切り込み方向（Ｘ軸方
向）の誤差が生じない。またこのＹ軸方向に生じる誤差
は、実際には数μｍ（ミクロン）乃至十数μｍ程度の微
小なものであり、工具３２の刃先位置が移動しても加工
精度に実質的な影響はない。この結果、第１及び第２の
送りねじ１１、２１が熱膨張等しても工具の芯高が僅か
に変わるのみであって、経時的に加工寸法の安定した高
精度な加工が実現できる。Here, since the direction of the combined elongation c is the Y-axis direction, there is no component in the X-axis direction which is the cutting direction of the tool 32, and the heat generated by the first and second feed screws 11 and 21 does not exist. The expansion does not cause an error in the cutting direction (X-axis direction) of the tool 32. The error occurring in the Y-axis direction is actually a very small one of about several μm (microns) to about several tens of μm, and even if the position of the cutting edge of the tool 32 moves, there is substantially no effect on the processing accuracy. As a result, even if the first and second feed screws 11 and 21 undergo thermal expansion or the like, only the center height of the tool slightly changes, and high-precision machining with stable machining dimensions over time can be realized.
【００１５】なお、上記実施例は、ＸＹ両軸方向に対し
て第１及び第２の送り軸方向Ａ、Ｂが４５度傾斜してい
る場合について説明した。しかし、この傾斜角度は４５
度に限定されるものではない。第１の送りねじ１１の伸
び量ａと第２の送りねじ２１の伸び量ｂが異なる場合に
は、前記したように、工具３２の刃先の伸びの角度θ
は、θ＝ｔａｎ-1（ｂ／ａ）となるので、この角度θだ
けＹ軸方向を第１の送り軸方向Ａに対して傾斜させれば
よい。In the above embodiment, the case where the first and second feed axis directions A and B are inclined by 45 degrees with respect to the X and Y axis directions has been described. However, this inclination angle is 45
It is not limited to degrees. If the extension amount a of the first feed screw 11 is different from the extension amount b of the second feed screw 21, as described above, the angle θ of the extension of the cutting edge of the tool 32 is used.
Is θ = tan −1 (b / a), so that the Y-axis direction may be inclined with respect to the first feed axis direction A by this angle θ.
【００１６】[0016]
【発明の効果】本発明によれば、主軸中心線に直交し且
つ相互に直交するＸＹ両軸方向にＮＣ制御されて移動
し、複数個の工具を保持する刃物台を有し、該刃物台
は、主軸中心線に直交する平面に平行で相互に直交して
移動する第１及び第２の移動台と、該第１及び第２の移
動台の移動方向に沿って刃物台を駆動する第１及び第２
の送りねじ手段とを有するＮＣ自動旋盤において、前記
第１及び第２の送りねじ手段による第１及び第２の送り
軸方向からなる直交座標系と、全ての工具の切り込み方
向であるＸ軸方向とこれに直交するＹ軸方向とからなる
ＸＹ両軸方向の直交座標系とは、所定の角度だけ傾斜し
て配置されているので、第１及び第２の送りねじが熱膨
張すると、工具の刃先は第１の送り軸方向に対して傾斜
したＹ軸方向に伸び量が合成された量だけ伸びる。According to the present invention, there is provided a tool rest which moves under NC control in both X and Y directions perpendicular to the center axis of the spindle and mutually perpendicular to each other and holds a plurality of tools. A first and a second moving table which are parallel to a plane orthogonal to the main shaft center line and move at right angles to each other; and a second driving table which drives the tool post along the moving direction of the first and second moving tables. 1st and 2nd
NC automatic lathe having the following feed screw means, an orthogonal coordinate system comprising first and second feed axis directions by the first and second feed screw means, and an X-axis direction which is a cutting direction of all tools. And an orthogonal coordinate system in the XY biaxial directions including the Y-axis direction and the Y-axis direction, which are inclined at a predetermined angle, so that when the first and second feed screws thermally expand, The cutting edge extends in the Y-axis direction inclined with respect to the first feed axis direction by the combined amount of extension.
【００１７】合成された伸びのＹ軸方向は、工具の切り
込み方向であるＸ軸方向の成分がないので、第１及び第
２の送りねじによる熱膨張によって、工具の切り込み方
向（Ｘ軸方向）の誤差が生じない。また合成された伸び
の方向は、工具の直交方向であるＹ軸方向であり、この
Ｙ軸方向の誤差は工具の刃先位置が移動して芯高が変わ
るのみであり、通常の熱変位量程度の変化では、加工に
実質的な影響はない。この結果、経時的に加工寸法の安
定した高精度な加工が実現できる。In the Y-axis direction of the synthesized elongation, there is no component in the X-axis direction, which is the cutting direction of the tool. Therefore, the thermal expansion by the first and second feed screws causes the cutting direction (X-axis direction) of the tool. Error does not occur. The direction of the combined elongation is the Y-axis direction, which is the orthogonal direction of the tool, and the error in the Y-axis direction is only a change in the center height due to the movement of the cutting edge position of the tool. Changes have no substantial effect on processing. As a result, high-precision processing with stable processing dimensions over time can be realized.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明のＮＣ自動旋盤の一実施例を示す正面図
である。FIG. 1 is a front view showing an embodiment of an NC automatic lathe according to the present invention.
【図２】図１の左側面図である。FIG. 2 is a left side view of FIG.
【図３】送りねじ手段の伸びによる工具刃先の変位の説
明図である。FIG. 3 is an explanatory view of displacement of a tool edge due to extension of a feed screw means.
１ ワーク ２ 主軸 ３ 主軸台 ５ 刃物台ベース ６ 主軸中心線 １０ 第１の移動台 １１ 第１の送りねじ ２０ 第２の移動台 ２１ 第２の送りねじ ３０ 刃物台 ３１ 工具取付け板 ３２ 工具 Ａ 第１の送り軸方向 Ｂ 第２の送り軸方向 Reference Signs List 1 work 2 spindle 3 spindle head 5 tool rest base 6 spindle center line 10 first moving stand 11 first feed screw 20 second moving stand 21 second feed screw 30 tool rest 31 tool mounting plate 32 tool A first 1 feed axis direction B 2nd feed axis direction
───────────────────────────────────────────────────── フロントページの続き (72)発明者 露崎 梅夫 埼玉県所沢市下富840番地 シチズン時 計株式会社所沢事業所内 (72)発明者 徳毛 一文 埼玉県所沢市下富840番地 シチズン時 計株式会社所沢事業所内 (56)参考文献 特開 平５−237705（ＪＰ，Ａ) 特開 昭59−201701（ＪＰ，Ａ) 特開 平６−114603（ＪＰ，Ａ) 特開 平５−138402（ＪＰ，Ａ) 特開 平５−309501（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B23B 21/00 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Umeo Tsukazaki 840 Shimotomi, Tokorozawa-shi, Saitama Citizen Clock Company, Ltd. In the Tokorozawa Office (56) References JP-A-5-237705 (JP, A) JP-A-59-201701 (JP, A) JP-A-6-114603 (JP, A) JP-A-5-138402 (JP, A A) JP-A-5-309501 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B23B 21/00
Claims (3)
ＸＹ両軸方向にＮＣ制御されて移動し、複数個の工具を
保持する刃物台を有し、該刃物台は、主軸中心線に直交
する平面に平行で相互に直交して移動する第１及び第２
の移動台と、該第１及び第２の移動台の移動方向に沿っ
て刃物台を駆動する第１及び第２の送りねじ手段とを有
するＮＣ自動旋盤において、前記第１及び第２の送りね
じ手段による第１及び第２の送り軸方向からなる直交座
標系と、全ての工具の切り込み方向であるＸ軸方向とこ
れに直交するＹ軸方向とからなるＸＹ両軸方向の直交座
標系とは、所定の角度だけ傾斜して配置され、前記刃物
台には、複数の工具が相互に平行に配置して保持され、
Ｘ軸方向が工具の切り込み方向、Ｙ軸方向が工具の選択
方向であり、第１の送りねじ手段の第１の送りねじの熱
膨張による伸びと第２の送りねじ手段の第２の送りねじ
の熱膨張による伸びを合成した伸びが、Ｙ軸方向となる
ように第１の送りねじと第２の送りねじを配置したこと
を特徴とするＮＣ自動旋盤。1. A tool rest which moves under NC control in both X and Y axes directions orthogonal to a spindle center line and mutually orthogonal to each other and holds a plurality of tools. First and second moving parallel to each other and perpendicular to each other
And a first and second feed screw means for driving the tool post along the moving direction of the first and second moving tables, the first and second feeds. A rectangular coordinate system composed of first and second feed axis directions by screw means, and an orthogonal coordinate system composed of an X-axis direction, which is a cutting direction of all tools, and a Y-axis direction orthogonal thereto, in both XY axes. Are arranged at a predetermined angle and the blade
The table holds a number of tools arranged parallel to each other,
X-axis direction is tool cutting direction, Y-axis direction is tool selection
Direction and the heat of the first lead screw of the first lead screw means.
Expansion by expansion and second feed screw of second feed screw means
The elongation obtained by synthesizing the elongation due to the thermal expansion becomes the Y-axis direction.
Characterized in that the first feed screw and the second feed screw are arranged as described above .
Ｙ両軸方向に対して傾斜する角度θの正接（ｔａｎθ）
は、前記２個の送りねじ手段の熱膨張等による伸び率の
比であることを特徴とする請求項１記載のＮＣ自動旋
盤。2. The apparatus according to claim 1, wherein the first and second feed axis directions are the X direction.
Tangent of angle θ inclined to both Y-axis directions (tan θ)
2. The NC automatic lathe according to claim 1, wherein は is a ratio of an elongation rate due to thermal expansion or the like of the two feed screw means.
を特徴とする請求項２記載のＮＣ自動旋盤。3. The NC automatic lathe according to claim 2, wherein the inclination angle θ is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12322494A JP3349586B2 (en) | 1994-05-13 | 1994-05-13 | NC automatic lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12322494A JP3349586B2 (en) | 1994-05-13 | 1994-05-13 | NC automatic lathe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07308803A JPH07308803A (en) | 1995-11-28 |
| JP3349586B2 true JP3349586B2 (en) | 2002-11-25 |
Family
ID=14855280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12322494A Expired - Lifetime JP3349586B2 (en) | 1994-05-13 | 1994-05-13 | NC automatic lathe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3349586B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI555606B (en) * | 2012-03-26 | 2016-11-01 | Citizen Holdings Co Ltd | Working machine |
-
1994
- 1994-05-13 JP JP12322494A patent/JP3349586B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07308803A (en) | 1995-11-28 |
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