JP3379145B2 - Machine tools using automatic tool changers - Google Patents

Machine tools using automatic tool changers

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Publication number
JP3379145B2
JP3379145B2 JP12941293A JP12941293A JP3379145B2 JP 3379145 B2 JP3379145 B2 JP 3379145B2 JP 12941293 A JP12941293 A JP 12941293A JP 12941293 A JP12941293 A JP 12941293A JP 3379145 B2 JP3379145 B2 JP 3379145B2
Authority
JP
Japan
Prior art keywords
tool
diameter
small
spindle
gripped
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
JP12941293A
Other languages
Japanese (ja)
Other versions
JPH06339831A (en
Inventor
隆仁 吉見
勝彦 竹内
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.)
Toyoda Koki KK
Original Assignee
Toyoda Koki KK
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Filing date
Publication date
Application filed by Toyoda Koki KK filed Critical Toyoda Koki KK
Priority to JP12941293A priority Critical patent/JP3379145B2/en
Publication of JPH06339831A publication Critical patent/JPH06339831A/en
Application granted granted Critical
Publication of JP3379145B2 publication Critical patent/JP3379145B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Automatic Tool Replacement In Machine Tools (AREA)

Description

【発明の詳細な説明】 【0001】 【産業上の利用分野】本発明は、装着穴の穴径が互いに
異なる各主軸と工具マガジン間で工具交換を行えるよう
にした自動工具交換装置を用いた工作機械に関するもの
である。 【0002】 【従来の技術】従来の自動工具交換装置を用いた工作機
械として、例えば特開昭61─257737号公報に示
すように、小径工具を格納するサブ工具マガジンと、大
径工具とマザー工具を格納するメイン工具マガジンと、
上下並びに左右方向に移動し大径工具又はマザー工具を
着脱可能に装着する主軸と、サブ工具マガジンとメイン
工具マガジンのマザー工具間で小径工具の交換を行う小
径工具交換装置と、メイン工具マガジンと主軸間で大径
工具又はマザー工具の交換を行う主軸工具交換装置を備
えたものがある。 【0003】前記大径工具として、カップ型フライス、
ドリル、エンドミル等があり、前記小径工具として、小
径砥石、ドリル、エンドミル等がある。前記カップ型フ
ライスは低速で回転させ、小径砥石は高速が回転させる
のが望ましい。前記主軸は転がり軸受を介して回転可能
に支承され、主軸の回転により転がり軸受が熱膨張する
関係上、転がり軸受のプリロードを低速回転或いは高速
回転に合わせて設定せざるを得ず、主軸の回転速度を広
範囲に対応させることは難しい。従って、低速回転或い
は高速回転において、十分な加工精度が得られない問題
があった。 【0004】 【発明が解決しようとする課題】このような問題を解決
するために、外径を小さくして高速で回転させることが
できる高速用主軸と、外径を大きくして加工剛性を高め
た低速用主軸をそれぞれ用意し、工具マガジンと高速用
主軸間で小径工具交換装置を使って小径工具を交換し、
工具マガジンと低速用主軸間で大径工具交換装置を使っ
て大径工具を交換することが考えられる。 【0005】しかしながら、このようなものでは、小径
工具の小径の被把持部を把持する小径工具交換装置と、
大径工具の大径の被把持部を把持する大径工具交換装置
をそれぞれ用意すると構造が複雑になり、高価になる問
題があった。 【0006】 【課題を解決するための手段】本発明は上述した問題点
を解決するためになされたもので、小径工具が装着され
る小径工具用の高速回転主軸と、大径工具が装着される
大径工具用の低速回転主軸をそれぞれ用意し、自動工具
交換装置を小径工具用の主軸又は大径工具用の主軸と工
具交換できる位置に選択的に割り出す移送装置を設け、
小径工具用の主軸又は大径工具用の主軸と工具マガジン
間で共通の自動工具交換装置で工具交換が行えるよう
に、前記小径工具の自動工具交換装置に把持される被把
持部の外径と前記大径工具の自動工具交換装置に把持さ
れる被把持部の外径を同径にしたものである。 【0007】 【作用】移送装置によって自動工具交換装置を小径工具
用の主軸又は大径工具用の主軸と工具交換できる位置に
割り出し、自動工具交換装置によって小径工具用の主軸
又は大径工具用の主軸と工具マガジン間で小径工具又は
大径工具の工具交換が行われる。 【0008】 【実施例】以下、本発明の実施例を図面を参照して説明
する。図1において、10はベッドであり、このベッド
10の四隅には支柱11が立設され、支柱11の上端に
は天板12が固定されている。天板12の上面には工具
マガジン20が固定され、工具マガジン20は図2にも
示すように回転モータ21と、この回転モータ21によ
って鉛直面内で回転する回転板22と、回転板22に円
周等間隔に設けられたソケット23a,23bとを備え
ている。ソケット23aには小径の装着穴24aが形成
され、小径工具30aのプルスタッド31aに係合する
ボール25aを備えている。ボール25aはスプリング
26aによって付勢されている。同様にソケット23b
には大径の装着穴24bが形成され、大径工具30bの
プルスタッド31bに係合するボール25bを備えてい
る。ボール25bはスプリング26bによって付勢され
ている。 【0009】前記小径工具30aは装着穴24aに装着
される小径でテーパ状のシャンク部32aと、後述する
交換アーム41に把持される断面が凹状の被把持部33
aと、ワークを加工する加工部34aを備えている。同
様に大径工具30bは装着穴24bに装着される大径で
テーパ状のシャンク部32bと、後述する交換アーム4
1に把持され断面が凹状の被把持部33bと、ワークを
加工する加工部34bを備えている。前記小径工具30
aの被把持部33aと大径工具30bの被把持部33b
は後述する同一の自動工具交換装置40によって把持さ
れるように、同一径に形成されている。 【0010】前記天板12の下面には自動工具交換装置
40が取付けられ、この自動工具交換装置40は水平軸
線回りに旋回する交換アーム41を備え、交換アーム4
1の両端には小径工具30aの被把持部33a又は大径
工具30bの被把持部33bを着脱可能に把持する把持
部42が設けられている。各把持部42は、図3にも示
すように被把持部33a,33bに係合する断面凸状で
円弧状の固定係合部42aと、工具30a,30bが抜
けないように被把持部33a,33bに係合する可動係
合部42bとからなり、可動係合部42bは被把持部3
3a,33bに係合する方向にスプリング42cによっ
て付勢されている。前記交換アーム41は駆動源43に
よって水平状態から90度旋回、前進、180度旋回、
後退、逆方向の90度旋回が連続して行われ、前記90
度旋回によって可動係合部42bが後退し、スプリング
42cによって可動係合部42bが前進することによ
り、小径工具30aの被把持部33a又は大径工具30
bの被把持部33bが機械的に把持され、前記逆方向の
90度旋回によって可動係合部42bが工具によって後
退され、スプリング42cによって可動係合部42bが
前進することにより、小径工具30aの被把持部33a
又は大径工具30bの被把持部33bの把持の解除が機
械的になされるようになっている。 【0011】前記ベッド10上には案内台50が設置さ
れ、この案内台50にテーブル51が交換アーム41の
旋回軸線と直交する水平方向に移動可能に案内されてい
る。前記案内台50にはサーボモータ15が取付けら
れ、図略のボールネジを介してテーブル51が図1の左
右方向に移動されるようになっいる。前記サーボモータ
15とボールネジによってテーブル51を移動させる移
送装置が構成される。前記テーブル51上には主軸台5
2が設置され、この主軸台52には図4にも示すように
小径工具用の主軸53と大径工具用の主軸54がそれぞ
れ交換アーム41の旋回軸線と平行な軸線回りに回転可
能に軸承されている。前記主軸53は高速回転用であ
り、主軸外径が小さく、主軸先端に小径工具30aを着
脱可能に把持する小径の装着穴53aが形成されてい
る。又前記主軸54は低速回転用であり、主軸外径が大
きく、主軸先端に大径工具30bを着脱可能に把持する
大径の装着穴54aが形成されている。前記主軸53,
54はそれぞれ主軸台52に内蔵されたそれぞれのビル
トインモータ55,56によって回転駆動されるように
なっており、また各主軸53,54には装着穴53a,
54aに装着された工具30a,30bのプルスタッド
31a,31bを把持するコレットチコャック式の把持
装置57,58が設けられている。 【0012】前記工具マガジン20,自動工具交換装置
40及びテーブル51は数値制御装置によって動作制御
されるようになっている。次に上述した構成に基づいて
作用について説明する。数値制御装置から小径工具交換
指令が出されると、工具マガジン20の回転板22が回
転され、次に使用する工具が交換アーム41によって把
持可能な位置に割り出される。また、テーブル51が移
動され、主軸53の小径工具30aを交換アーム41に
よって把持可能な位置に割り出される。続いて、交換ア
ーム41が90度旋回し、一方の把持部42で工具マガ
ジン20の小径工具30aの被把持部33aが機械的に
把持され、他方の把持部42で主軸53の小径工具30
aの被把持部33aが機械的に把持される。かかる状態
で主軸53の把持装置57によるプルスタッド31aの
把持を解除して交換アーム41を前進させる。これによ
って、次に使用する小径工具30aのボール25aによ
る把持が自動的に解除されるとともに、ソケット23a
と主軸53から小径工具30aが抜き出される。次に、
交換アーム41を180度旋回させ、交換アーム41を
後退させて次に使用する小径工具30aを主軸53の装
着穴53aに装着するとともに使用済の小径工具30a
をソケット23aの装着穴24aに装着する。このと
き、使用済の小径工具30aがボール24aによって自
動的に把持される。続いて、次に使用する小径工具30
aのプルスタッド31aが主軸53の把持装置57によ
って把持され、交換アーム41を逆方向に90度旋回さ
せ、交換アーム41の把持部42による小径工具30a
の被把持部33aの把持を機械的に解除する。続いて、
主軸53を回転させるとともにテーブル51が移動して
ワークの加工が行われる。このとき、大径工具30b側
の主軸54は遊んでおり、ワークの加工は行わない。 【0013】大径工具30bの交換も小径工具30aの
場合と同様になされ、この場合、数値制御装置の大径工
具交換指令によって、テーブル51を主軸43の大径工
具30bが交換アーム41によって把持可能な位置に割
り出す。このように、小径工具用の主軸53と大径工具
用の主軸54を備え、主軸回転速度に応じて小径工具用
の主軸53と大径工具用の主軸54を選択して使用する
ことにより、加工精度の向上が図れる。即ち、小径工具
用の主軸53を使って小径砥石を高速回転させることに
よって、加工精度を向上させることができ、加工剛性の
高い大径工具用の主軸54を使ってカップ型フライス等
を低速回転させることによって、加工精度を向上させる
ことができる。 【0014】また、小径工具30aの被把持部33aと
大径工具30bの被把持部30bを同一径にし、共通の
自動工具交換装置40によって把持できるようにしたの
で、構造が簡単になり、安価な工作機械を提供できる。
なお、上述した実施例は、テーブル51を移動させ、自
動工具交換装置40によって工具交換可能な位置に小径
工具用の主軸53又は大径工具用の主軸54を割り出す
例について述べたが、工具マガジン20と自動工具交換
装置40を移動させ、自動工具交換装置40を主軸53
の小径工具30a又は主軸54の大径工具30bと工具
交換可能な位置に割り出しても良い。また、小径工具用
の工具マガジンを小径工具用の主軸53に対応する位置
に設け、大径工具用の工具マガジンを大径工具用の主軸
54に対応する位置に設け、自動工具交換装置40を小
径工具用の工具マガジン並びに小径工具用の主軸53又
は大径工具用の工具マガジン並びに大径工具用の主軸5
4と工具交換可能な位置を割り出すようにしても良い。 【0015】以上説明したように本発明によれば、小径
工具の被把持部と大径工具の被把持部を同一径にしたこ
とにより、共通の自動工具交換装置によって高速回転用
小径工具の被把持部と低速回転用の大径工具の被把持
部を把持することができる。よって、構造が簡単にな
り、安価な工作機械を提供できる効果が得られる。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses an automatic tool changer which is capable of changing a tool between a spindle and a tool magazine having different mounting hole diameters. It relates to machine tools. 2. Description of the Related Art As a conventional machine tool using an automatic tool changer, for example, as disclosed in Japanese Patent Application Laid-Open No. 61-257737, a sub-tool magazine for storing small-diameter tools, a large-diameter tool and a mother A main tool magazine for storing tools,
A main spindle that moves vertically and horizontally to detachably mount a large-diameter tool or a mother tool, a small-diameter tool exchange device that exchanges small-diameter tools between the sub tool magazine and the mother tool of the main tool magazine, and a main tool magazine. Some machines are provided with a spindle tool exchange device for exchanging a large diameter tool or a mother tool between spindles. [0003] As the large-diameter tool, a cup-type milling machine,
There are a drill, an end mill, and the like, and the small-diameter tool includes a small-diameter whetstone, a drill, an end mill, and the like. Preferably, the cup-type milling machine is rotated at a low speed, and the small-diameter grindstone is rotated at a high speed. The main shaft is rotatably supported via a rolling bearing.Because the rolling bearing thermally expands due to the rotation of the main shaft, the preload of the rolling bearing must be set in accordance with low speed rotation or high speed rotation. It is difficult to make the speed correspond widely. Therefore, there has been a problem that sufficient processing accuracy cannot be obtained at low speed rotation or high speed rotation. [0004] In order to solve such a problem, a high-speed spindle capable of rotating at a high speed with a small outer diameter, and increasing the outer diameter to increase the processing rigidity. The low-speed spindle is prepared separately, and the small-diameter tool is exchanged between the tool magazine and the high-speed spindle using the small-diameter tool changer.
It is conceivable to exchange a large-diameter tool between the tool magazine and the low-speed spindle using a large-diameter tool exchange device. However, in such a device, a small-diameter tool changing device for gripping a small-diameter gripped portion of a small-diameter tool,
If a large-diameter tool changer for gripping a large-diameter gripped portion of a large-diameter tool is prepared, there is a problem that the structure becomes complicated and expensive. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has a high-speed rotating spindle for a small-diameter tool on which a small-diameter tool is mounted, and a large-diameter tool mounted thereon. A low-speed rotating spindle for large-diameter tools is prepared, and a transfer device for selectively indexing the automatic tool changer to a position where tool exchange can be performed with the spindle for small-diameter tools or the spindle for large-diameter tools is provided.
The outer diameter of the part to be gripped by the automatic tool changing device for the small-diameter tool so that the tool can be changed by the common automatic tool changing device between the main spindle for the small-diameter tool or the main spindle for the large-diameter tool and the tool magazine. The outer diameter of the gripped portion gripped by the automatic tool changer for the large diameter tool is the same. The automatic tool changer is indexed by the transfer device to a position where the tool can be exchanged with the main spindle for the small diameter tool or the main spindle for the large diameter tool. Tool exchange of a small diameter tool or a large diameter tool is performed between the main spindle and the tool magazine. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 10 denotes a bed, and pillars 11 are erected at four corners of the bed 10, and a top plate 12 is fixed to an upper end of the pillar 11. A tool magazine 20 is fixed to the upper surface of the top plate 12. The tool magazine 20 includes a rotating motor 21, a rotating plate 22 rotated in a vertical plane by the rotating motor 21, and a rotating plate 22 as shown in FIG. 2. Sockets 23a and 23b provided at equal circumferential intervals. The socket 23a is formed with a small-diameter mounting hole 24a and includes a ball 25a that engages with the pull stud 31a of the small-diameter tool 30a. The ball 25a is urged by a spring 26a. Similarly, socket 23b
Is formed with a large-diameter mounting hole 24b and has a ball 25b that engages with the pull stud 31b of the large-diameter tool 30b. The ball 25b is urged by a spring 26b. The small-diameter tool 30a has a small-diameter tapered shank portion 32a mounted in the mounting hole 24a, and a gripped portion 33 having a concave cross section gripped by an exchange arm 41 described later.
a and a processing unit 34a for processing a work. Similarly, the large-diameter tool 30b includes a large-diameter tapered shank portion 32b to be mounted in the mounting hole 24b and an exchange arm 4 to be described later.
A gripped portion 33b that is gripped by the first and has a concave cross section and a processing portion 34b that processes a work are provided. The small diameter tool 30
a to be gripped portion 33a and gripped portion 33b of large-diameter tool 30b
Are formed to have the same diameter so as to be gripped by the same automatic tool changer 40 described later. An automatic tool changer 40 is mounted on the lower surface of the top plate 12, and includes an exchange arm 41 that rotates around a horizontal axis.
At both ends of 1, there are provided gripping portions 42 for detachably gripping the gripped portion 33a of the small-diameter tool 30a or the gripped portion 33b of the large-diameter tool 30b. As shown in FIG. 3, each of the gripping portions 42 has a fixed engaging portion 42a having a convex cross section and an arc shape that engages with the gripped portions 33a and 33b, and a gripped portion 33a that prevents the tools 30a and 30b from coming off. , 33b to be engaged with the gripped portion 3b.
It is urged by a spring 42c in a direction to engage with 3a, 33b. The exchange arm 41 is turned 90 degrees from a horizontal state by a drive source 43, forwardly moved, turned 180 degrees,
The reverse and the 90-degree turning in the opposite direction are continuously performed,
When the movable engagement portion 42b is retracted by the degree rotation and the movable engagement portion 42b is advanced by the spring 42c, the gripped portion 33a of the small-diameter tool 30a or the large-diameter tool 30
b is mechanically gripped, the movable engaging portion 42b is retracted by the tool by the 90-degree turning in the opposite direction, and the movable engaging portion 42b is advanced by the spring 42c, thereby causing the small-diameter tool 30a to move forward. Gripped part 33a
Alternatively, the gripping of the gripped portion 33b of the large-diameter tool 30b is mechanically released. A guide table 50 is provided on the bed 10, and a table 51 is guided by the guide table 50 so as to be movable in a horizontal direction orthogonal to the rotation axis of the exchange arm 41. A servo motor 15 is attached to the guide table 50, and the table 51 is moved in the left-right direction in FIG. 1 via a ball screw (not shown). A transfer device for moving the table 51 by the servo motor 15 and the ball screw is configured. On the table 51, there is a headstock 5
As shown in FIG. 4, a spindle 53 for a small-diameter tool and a spindle 54 for a large-diameter tool are respectively mounted on the headstock 52 so as to be rotatable around an axis parallel to the turning axis of the exchange arm 41. Have been. The spindle 53 is for high-speed rotation, has a small spindle outer diameter, and has a small-diameter mounting hole 53a formed at the tip of the spindle for detachably holding the small-diameter tool 30a. The spindle 54 is for low-speed rotation, has a large spindle outer diameter, and has a large-diameter mounting hole 54a formed at the tip of the spindle so as to detachably hold the large-diameter tool 30b. The spindle 53,
Numeral 54 is adapted to be rotationally driven by respective built-in motors 55, 56 built in the headstock 52, and mounting holes 53a,
Collet chico-jack type gripping devices 57, 58 for gripping the pull studs 31a, 31b of the tools 30a, 30b mounted on the 54a are provided. The operation of the tool magazine 20, the automatic tool changer 40 and the table 51 is controlled by a numerical controller. Next, the operation will be described based on the configuration described above. When a small-diameter tool change command is issued from the numerical controller, the rotary plate 22 of the tool magazine 20 is rotated, and the next tool to be used is indexed to a position where it can be gripped by the change arm 41. Further, the table 51 is moved, and the small-diameter tool 30a of the main shaft 53 is indexed to a position where the small-diameter tool 30a can be gripped by the exchange arm 41. Subsequently, the exchange arm 41 rotates 90 degrees, the gripped portion 33a of the small-diameter tool 30a of the tool magazine 20 is mechanically gripped by one gripper 42, and the small-diameter tool 30 of the spindle 53 is gripped by the other gripper 42.
The gripped portion 33a of “a” is mechanically gripped. In this state, the grasping of the pull stud 31a by the grasping device 57 of the main shaft 53 is released, and the exchange arm 41 is advanced. As a result, the grip of the small tool 30a to be used next by the ball 25a is automatically released and the socket 23a
And the small-diameter tool 30a is extracted from the main shaft 53. next,
The exchange arm 41 is rotated by 180 degrees, the exchange arm 41 is retracted, and the next small-diameter tool 30a to be used next is mounted in the mounting hole 53a of the main shaft 53, and the used small-diameter tool 30a is
Into the mounting hole 24a of the socket 23a. At this time, the used small-diameter tool 30a is automatically gripped by the ball 24a. Subsequently, the next small-diameter tool 30
The pull stud 31a is gripped by the gripping device 57 of the main shaft 53, the exchange arm 41 is turned by 90 degrees in the opposite direction, and the small-diameter tool 30a is gripped by the grip portion 42 of the exchange arm 41.
Is mechanically released from the gripped portion 33a. continue,
The work of the workpiece is performed by rotating the main shaft 53 and moving the table 51. At this time, the spindle 54 on the side of the large-diameter tool 30b is idle, and the work is not processed. The replacement of the large-diameter tool 30b is performed in the same manner as in the case of the small-diameter tool 30a. In this case, the large-diameter tool 30b of the main shaft 43 holds the table 51 by the exchange arm 41 according to the large-diameter tool exchange command of the numerical controller. Determine where possible. Thus, by providing the main shaft 53 for the small diameter tool and the main shaft 54 for the large diameter tool, by selecting and using the main shaft 53 for the small diameter tool and the main shaft 54 for the large diameter tool according to the main shaft rotation speed, Processing accuracy can be improved. That is, by rotating the small-diameter grindstone at a high speed using the small-diameter tool spindle 53, the machining accuracy can be improved, and the cup-type milling machine or the like can be rotated at a low speed using the large-diameter tool spindle 54 having a high processing rigidity. By doing so, the processing accuracy can be improved. Further, the gripped portion 33a of the small-diameter tool 30a and the gripped portion 30b of the large-diameter tool 30b have the same diameter and can be gripped by the common automatic tool changer 40, so that the structure is simplified and the cost is reduced. Machine tools can be provided.
In the above-described embodiment, the example has been described in which the table 51 is moved and the main shaft 53 for the small-diameter tool or the main shaft 54 for the large-diameter tool is located at a position where the tool can be changed by the automatic tool changer 40. 20 and the automatic tool changer 40 are moved, and the automatic tool changer 40 is
May be indexed to a position where the tool can be replaced with the small-diameter tool 30a or the large-diameter tool 30b of the main shaft 54. In addition, a tool magazine for small-diameter tools is provided at a position corresponding to the main shaft 53 for small-diameter tools, a tool magazine for large-diameter tools is provided at a position corresponding to the main shaft 54 for large-diameter tools, and the automatic tool changer 40 is provided. Tool magazine for small diameter tools and spindle 53 for small diameter tools or tool magazine for large diameter tools and spindle 5 for large diameter tools
A position at which the tool can be exchanged with the position 4 may be determined. As described above, according to the present invention, the grasped portion of the small-diameter tool and the grasped portion of the large-diameter tool have the same diameter .
The gripped portion of the small-diameter tool and the gripped portion of the large-diameter tool for low-speed rotation can be gripped. Therefore, the structure is simplified, and an effect that an inexpensive machine tool can be provided is obtained.

【図面の簡単な説明】 【図1】本発明に係る自動工具交換装置を用いた工作機
械の正面図。 【図2】図1におけるA矢視断面図。 【図3】交換アームの一部断面図。 【図4】図1におけるB−B断面図。 【符号の説明】 10 ベッド 15 サーボモータ(移送装置) 20 工具マガジン 30a 小径工具 30b 大径工具 32a シャンク部 32b シャンク部 33a 被把持部 33b 被把持部 40 自動工具交換装置 51 テーブル 52 主軸台 53 主軸 53a 装着穴 54 主軸 54a 装着穴
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a machine tool using an automatic tool changer according to the present invention. FIG. 2 is a sectional view taken along the arrow A in FIG. FIG. 3 is a partial cross-sectional view of an exchange arm. FIG. 4 is a sectional view taken along line BB in FIG. 1; [Description of Signs] 10 Bed 15 Servo motor (transfer device) 20 Tool magazine 30a Small-diameter tool 30b Large-diameter tool 32a Shank portion 32b Shank portion 33a Grabbed portion 33b Grabbed portion 40 Automatic tool changer 51 Table 52 Headstock 53 Spindle 53a mounting hole 54 spindle 54a mounting hole

Claims (1)

(57)【特許請求の範囲】 【請求項1】回転する主軸を備え、主軸の先端に工具が
着脱可能に装着される装着穴を形成した主軸台と、複数
の工具を格納する工具マガジンと、主軸と工具マガジン
間で工具交換を行う自動工具交換装置とを備えた自動工
具交換装置を用いた工作機械において、小径工具の小径
のシャンク部が装着される装着穴を有する小径工具用の
高速回転主軸と、大径工具の大径のシャンク部が装着さ
れる装着穴を有する大径工具用の低速回転主軸をそれぞ
れ設け、前記自動工具交換装置を小径工具用の主軸又は
大径工具用の主軸と工具交換できる位置に選択的に割り
出す移送装置を設け、前記小径工具の自動工具交換装置
に把持される被把持部の外径と前記大径工具の自動工具
交換装置に把持される被把持部の外径を同径にしたこと
を特徴とする自動工具交換装置を用いた工作機械。
(57) [Claim 1] A headstock provided with a rotating spindle and having a mounting hole at the tip of the spindle in which a tool is removably mounted, and a tool magazine for storing a plurality of tools. In a machine tool using an automatic tool changing device having an automatic tool changing device for performing a tool change between a spindle and a tool magazine, a small diameter tool having a mounting hole in which a small shank portion of a small diameter tool is mounted.
A high-speed rotating spindle and a low-speed rotating spindle for a large-diameter tool having a mounting hole into which a large-diameter shank portion of a large-diameter tool is mounted, respectively, and the automatic tool changing device is used for a spindle for a small-diameter tool or for a large-diameter tool. A transfer device is provided for selectively indexing the main spindle to a position where the tool can be changed, and the outer diameter of the gripped portion gripped by the automatic tool changing device for the small-diameter tool and the transfer device gripped by the automatic tool changing device for the large-diameter tool are provided. A machine tool using an automatic tool changer, wherein an outer diameter of a grip portion is made equal.
JP12941293A 1993-05-31 1993-05-31 Machine tools using automatic tool changers Expired - Fee Related JP3379145B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12941293A JP3379145B2 (en) 1993-05-31 1993-05-31 Machine tools using automatic tool changers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12941293A JP3379145B2 (en) 1993-05-31 1993-05-31 Machine tools using automatic tool changers

Publications (2)

Publication Number Publication Date
JPH06339831A JPH06339831A (en) 1994-12-13
JP3379145B2 true JP3379145B2 (en) 2003-02-17

Family

ID=15008901

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12941293A Expired - Fee Related JP3379145B2 (en) 1993-05-31 1993-05-31 Machine tools using automatic tool changers

Country Status (1)

Country Link
JP (1) JP3379145B2 (en)

Also Published As

Publication number Publication date
JPH06339831A (en) 1994-12-13

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