JP2011031368A - Tool cutting edge detection device and machine tool - Google Patents

Tool cutting edge detection device and machine tool Download PDF

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JP2011031368A
JP2011031368A JP2009182802A JP2009182802A JP2011031368A JP 2011031368 A JP2011031368 A JP 2011031368A JP 2009182802 A JP2009182802 A JP 2009182802A JP 2009182802 A JP2009182802 A JP 2009182802A JP 2011031368 A JP2011031368 A JP 2011031368A
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tool
edge
detection
workpiece
touch sensor
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Naoki Inoue
直規 井上
Yoshitoki Matsumoto
吉祝 松本
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Okuma Corp
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Okuma Corp
Okuma Machinery Works Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To detect an inner diameter tool and an outer diameter tool within a saved space without having a limitation on the shape of a workpiece. <P>SOLUTION: In a tool cutting edge detection device 1, a pair of touch sensors 5, 5 having detection surfaces 6, 7 are provided on ends of a pair of arms 3, 3 at predetermined intervals in the X-axis direction, with the detection surfaces 6 separately disposed to face each other. Each arm 3 is independently movably set between a projecting position where the touch sensor 5 is held at a detection position of the edge by projecting in a processing chamber and an evacuating position where the touch sensor 5 is evacuated from the machining chamber. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、立形旋盤等の工作機械に設けられ、工具の刃先位置を検出して工具補正値を設定するために用いられる工具刃先検出装置と、当該装置を搭載した工作機械とに関する。   The present invention relates to a tool edge detection device that is provided in a machine tool such as a vertical lathe and that is used to detect the position of a tool edge and set a tool correction value, and a machine tool equipped with the apparatus.

立形旋盤や門形マシニングセンタ等の工作機械においては、工具やチップを交換した際、刃物台や主軸に取り付けられた工具の刃先位置を検出して、予め得た基準工具の刃先位置と比較する作業が行われる。両者の刃先位置に差があれば、当該差から工具補正値を算出し、算出した工具補正値に基づいて加工プログラムを補正するためである（例えば特許文献１）。   In a machine tool such as a vertical lathe or a portal machining center, when the tool or tip is replaced, the tool tip position of the tool attached to the tool post or spindle is detected and compared with the reference tool tip position obtained in advance. Work is done. This is because if there is a difference between the two blade edge positions, a tool correction value is calculated from the difference, and the machining program is corrected based on the calculated tool correction value (for example, Patent Document 1).

特許第３０５７２１８号公報Japanese Patent No. 3057218

ところで、大型のワークを加工する立形旋盤等では、刃先位置の検出の度にいちいちワークをテーブルから降ろすと時間や労力が掛かるため、ワークをそのままにして刃先が検出ができるように、加工室内でワークと干渉しないスペースに工具刃先検出装置が設置されている。しかし、図５に示すように、ラム２０に取り付けられる内径加工用の工具（以下「内径工具」という。）２１と外径加工用の工具（以下「外径工具」という。）２２とでは工具の向きが相反するため、ワークＷと加工室の横壁２３との間に形成されるスペースの中央にタッチセンサ２４を設置して、内径工具２１と外径工具２２との刃先を夫々Ｘ軸方向で相反する側からタッチセンサ２４の検出面２５，２５に接触させることになる。従って、中央のタッチセンサ２４の左右にラム２０が進入可能となる広いスペースが必要となって加工室が大型化し、延いては機械全体の大型化に繋がってしまう。かといってスペースをＸ軸方向に縮小すると、図６に示すようにラム２０及び内径工具２１との干渉を回避するためにワークＷの形状に制限を受ける（二点鎖線Ｗ１部分にワークが位置できない）ことになる。   By the way, in vertical lathes that process large workpieces, it takes time and labor to remove the workpiece from the table each time the cutting edge position is detected, so that the cutting edge can be detected without removing the workpiece. The tool edge detection device is installed in a space that does not interfere with the workpiece. However, as shown in FIG. 5, the inner diameter machining tool (hereinafter referred to as “inner diameter tool”) 21 and the outer diameter machining tool (hereinafter referred to as “outer diameter tool”) 22 attached to the ram 20 are tools. Since the directions of the two are opposite to each other, a touch sensor 24 is installed in the center of the space formed between the workpiece W and the lateral wall 23 of the machining chamber, and the cutting edges of the inner diameter tool 21 and the outer diameter tool 22 are respectively set in the X-axis direction. Therefore, the detection surfaces 25 and 25 of the touch sensor 24 are brought into contact with the opposite sides. Therefore, a large space is required to allow the ram 20 to enter the left and right of the center touch sensor 24, which increases the size of the processing chamber, which leads to an increase in the size of the entire machine. However, when the space is reduced in the X-axis direction, the shape of the workpiece W is limited in order to avoid interference with the ram 20 and the inner diameter tool 21 as shown in FIG. 6 (the workpiece is positioned at the two-dot chain line W1 portion). I can't)

そこで、本発明は、ワークの形状に制限を受けることなく省スペースで内径工具及び外径工具の検出が行える工具刃先検出装置及び工作機械を提供することを目的としたものである。   Accordingly, an object of the present invention is to provide a tool edge detecting device and a machine tool capable of detecting an inner diameter tool and an outer diameter tool in a space-saving manner without being limited by the shape of a workpiece.

上記目的を達成するために、請求項１に記載の発明は、工作機械に搭載され、加工室内で工具の刃先位置を検出する接触式のセンサを備えた工具刃先検出装置であって、少なくともＸ軸方向の検出面を有する一対のセンサを、Ｘ軸方向に所定間隔をおいて配置した一対のアームの先端に、検出面が相対向するように別々に配置して、各アームを、加工室内に突出してセンサを刃先の検出位置に保持する突出位置と、加工室内からセンサを退避させる退避位置との間で夫々独立して移動可能に設け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、何れか一方のセンサを突出位置に保持して刃先位置を検出する際には、他方のセンサが突出位置で工具と干渉するように一対のアームの間隔をＸ軸方向で狭め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１又は２の構成において、センサの一方がワークの内径加工用工具の検出用、他方がワークの外径加工用工具の検出用であることを特徴とするものである。
上記目的を達成するために、請求項４に記載の発明は、工作機械であって、請求項１乃至３の何れかに記載の工具刃先検出装置を、加工室にセットされる最大径のワークと加工室の横壁との間で両アームが突出可能な位置に搭載したことを特徴とするものである。 In order to achieve the above object, the invention described in claim 1 is a tool edge detection device that is mounted on a machine tool and includes a contact-type sensor that detects the position of the edge of a tool in a processing chamber, and at least X A pair of sensors having axial detection surfaces are separately arranged at the tips of a pair of arms arranged at a predetermined interval in the X-axis direction so that the detection surfaces face each other. It is characterized in that it is provided so as to be independently movable between a protruding position where the sensor is protruded to hold the sensor at the detection position of the blade edge and a retracted position where the sensor is retracted from the processing chamber.
According to a second aspect of the present invention, in the configuration of the first aspect, when one of the sensors is held at the protruding position and the blade edge position is detected, the other sensor interferes with the tool at the protruding position. The distance between the pair of arms is narrowed in the X-axis direction.
The invention according to claim 3 is characterized in that, in the configuration of claim 1 or 2, one of the sensors is for detecting a tool for machining the inner diameter of the workpiece, and the other is for detecting a tool for machining the outer diameter of the workpiece. To do.
In order to achieve the above object, a fourth aspect of the present invention is a machine tool, wherein the tool edge detecting device according to any one of the first to third aspects is set in a workpiece having a maximum diameter set in a processing chamber. The arm is mounted at a position where both arms can project between the machine wall and the lateral wall of the processing chamber.

請求項１及び４に記載の発明によれば、工具刃先検出装置を加工室の横壁に極力近づけて設置できる上、刃先位置の検出の際には必要なセンサに係るアームのみを左右片側で突出させれば足り、狭いスペースでも支障なく内径工具及び外径工具の検出が行える。従って、省スペースで工具刃先検出装置が設置でき、ワークの形状に制限を受けることもなくなる。
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、アームの間隔が最小限に設定可能となってより省スペースとなる。
請求項３に記載の発明によれば、請求項１又は２の効果に加えて、一対のセンサを工具に応じて合理的に使い分け可能となる。 According to the first and fourth aspects of the present invention, the tool edge detection device can be installed as close as possible to the lateral wall of the machining chamber, and only the arm related to the necessary sensor protrudes on the left and right sides when detecting the edge position. It is enough to detect the inner diameter tool and the outer diameter tool without any trouble even in a narrow space. Therefore, the tool edge detection device can be installed in a small space, and the shape of the workpiece is not limited.
According to the second aspect of the present invention, in addition to the effect of the first aspect, the space between the arms can be set to the minimum, and the space can be saved.
According to invention of Claim 3, in addition to the effect of Claim 1 or 2, it becomes possible to use a pair of sensors rationally according to a tool.

工具刃先検出装置の斜視図である。It is a perspective view of a tool blade edge | tip detection apparatus. 工具刃先検出装置の斜視図で、（Ａ）は右側のアームを、（Ｂ）は左側のアームを夫々突出位置に移動させた状態を示す。It is a perspective view of a tool blade edge | tip detection apparatus, (A) shows the state which moved the right arm, (B) moved the left arm to the protrusion position, respectively. 刃先検出の説明図で、（Ａ）は内径工具の刃先を、（Ｂ）は外径工具の刃先を夫々検出する状態を示す。It is explanatory drawing of a blade edge | tip detection, (A) shows the state which detects the blade edge of an internal diameter tool, (B) each detects the blade edge of an outer diameter tool. 工具刃先検出装置の変更例の説明図である。It is explanatory drawing of the example of a change of a tool blade edge | tip detection apparatus. 従来の工具刃先検出装置の説明図である。It is explanatory drawing of the conventional tool blade edge | tip detection apparatus. 従来の工具刃先検出装置の説明図である。It is explanatory drawing of the conventional tool blade edge | tip detection apparatus.

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、立形旋盤に設けられる工具刃先検出装置の一例を示す斜視図である。まず立形旋盤は、ベッド上に立設したコラムの前面に、左右方向で水平なクロスレールを上下方向へ移動可能に架設し、クロスレールの前面に、左右方向（Ｘ軸方向）へ移動可能なサドルを設け、そのサドルの下方に、下端に工具を装着可能なラムが、上下方向（Ｚ軸方向）へ移動可能に設けられる周知の構成となっている。工具刃先検出装置１は、ベッド上に形成される加工室の後壁１０に設けられる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an example of a tool edge detecting device provided on a vertical lathe. First, the vertical lathe is installed on the front of the column standing on the bed so that a horizontal cross rail can be moved in the vertical direction, and can be moved in the horizontal direction (X-axis direction) on the front of the cross rail. A saddle is provided, and a ram capable of mounting a tool at the lower end is provided below the saddle so as to be movable in the vertical direction (Z-axis direction). The tool edge detecting device 1 is provided on the rear wall 10 of the processing chamber formed on the bed.

工具刃先検出装置１は、加工室の後壁から前方へ箱状に突出して図示しないモータやギヤ等を内設する駆動機構部２を有し、駆動機構部２の左右の側面に、一対のアーム３，３（但し、左右で区別する必要がある場合は３Ａ（右側）、３Ｂ（左側）のように符号Ａ，Ｂを付す。他の構成部についても同様とする。）を備えている。このアーム３は、駆動機構部２の制御により、図２（Ａ）（Ｂ）に示すように、前方へ略水平に突出する突出位置と、上方へ略垂直に突出する退避位置との間を夫々単独で旋回可能となっている。   The tool blade edge detection device 1 has a drive mechanism portion 2 that protrudes forward from the rear wall of the processing chamber in a box shape and includes a motor, a gear, and the like (not shown). Arms 3 and 3 (however, if it is necessary to distinguish between left and right, symbols A and B are attached as in 3A (right side) and 3B (left side). The same applies to other components). . As shown in FIGS. 2 (A) and 2 (B), the arm 3 is controlled between the protruding position protruding substantially horizontally forward and the retracted position protruding approximately vertically upward, as shown in FIGS. Each can turn independently.

５は、アーム３の先端に形成した載置面４に立設され、アーム３の突出位置で鉛直方向となるタッチセンサで、このタッチセンサ５は、右側のタッチセンサ５Ａが内径工具の検出用、左側のタッチセンサ５Ｂが外径工具の検出用となっている。また、タッチセンサ５Ａの左側面（Ｘ軸マイナス方向）及び上面（Ｚ軸マイナス方向）には刃先の検出面６Ａ，７Ａが夫々設けられ、タッチセンサ５Ｂの右側面（Ｘ軸プラス方向）及び上面（Ｚ軸マイナス方向）には刃先の検出面６Ｂ，７Ｂが夫々設けられている。   Reference numeral 5 denotes a touch sensor which is erected on the mounting surface 4 formed at the tip of the arm 3 and is in the vertical direction at the protruding position of the arm 3. The right touch sensor 5 </ b> A is used for detecting the inner diameter tool. The left touch sensor 5B is for detecting an outer diameter tool. Further, detection surfaces 6A and 7A of the blade edge are provided on the left side surface (X-axis negative direction) and the upper surface (Z-axis negative direction) of the touch sensor 5A, respectively, and the right side surface (X-axis positive direction) and upper surface of the touch sensor 5B. Detection surfaces 6B and 7B of the blade edge are provided in the (Z-axis minus direction), respectively.

一方、後壁１０におけるアーム３，３の上側には、アーム３の退避位置でタッチセンサ５を含む載置面４が嵌合する嵌合窓１１，１１が形成されて、タッチセンサ５を使用しないアーム３の退避位置では、図１のように載置面４及びタッチセンサ５が嵌合窓１１に収納されて加工室内に露出しないようになっている。
また、工具刃先検出装置１は、ベッド上のチャックに最大径のワークをセットしたまま刃先の検出が行えるように、加工室の右側の横壁寄りに設けられて、何れのアーム３を突出位置に移動させても、ワークと横壁との間に突出するようになっている。 On the other hand, on the upper side of the arms 3 and 3 on the rear wall 10, fitting windows 11 and 11 for fitting the mounting surface 4 including the touch sensor 5 at the retracted position of the arm 3 are formed, and the touch sensor 5 is used. In the retracted position of the arm 3 not to be mounted, the mounting surface 4 and the touch sensor 5 are housed in the fitting window 11 and are not exposed to the processing chamber as shown in FIG.
Further, the tool blade edge detection device 1 is provided near the lateral wall on the right side of the processing chamber so that the edge of the blade can be detected while the workpiece having the maximum diameter is set on the chuck on the bed, and any arm 3 is set to the protruding position. Even if it is moved, it protrudes between the workpiece and the lateral wall.

具体的に説明すると、図３（Ａ）に示すように、右側のアーム３Ａは加工室の横壁１２に近接するように設置されている。これにより、内径工具１４を装着した立形旋盤のラム１３を、最大径のワークＷと横壁１２との間のスペースＳ内でタッチセンサ５Ａの左側へ進入させて、内径工具１４の刃先１５が検出面６Ａに対向する待機位置に位置させることができる。
一方、図３（Ｂ）に示すように、左側のアーム３Ｂは、ワークＷに近接するように設置されている。これにより、外径工具１６を装着したラム１３を、スペースＳ内でタッチセンサ５Ｂの右側へ進入させて、外径工具１６の刃先１７が検出面６Ｂに対向する待機位置に位置させることができる。 More specifically, as shown in FIG. 3A, the right arm 3A is disposed so as to be close to the lateral wall 12 of the processing chamber. Thereby, the ram 13 of the vertical lathe equipped with the inner diameter tool 14 is caused to enter the left side of the touch sensor 5A in the space S between the workpiece W having the maximum diameter and the lateral wall 12, and the cutting edge 15 of the inner diameter tool 14 is moved. It can be located at a standby position facing the detection surface 6A.
On the other hand, as shown in FIG. 3B, the left arm 3 </ b> B is installed so as to be close to the workpiece W. As a result, the ram 13 with the outer diameter tool 16 attached can enter the right side of the touch sensor 5B in the space S, and the cutting edge 17 of the outer diameter tool 16 can be positioned at the standby position facing the detection surface 6B. .

ここで、左右のアーム３Ａ，３Ｂの間隔は、両者が突出した状態ではラム１３が進入できない距離、すなわち、一方のタッチセンサ５を使用する場合は、待機位置の工具が他方のタッチセンサ５と干渉するようにＸ軸方向に狭くなる距離で設定されている。しかし、図３のように他方のアーム３を退避位置に移動させれば、スペースＳの片側（同図（Ａ）ではワークＷ側、同図（Ｂ）では横壁１２側）を開放できるため、当該干渉を防ぐことができる。   Here, the distance between the left and right arms 3 </ b> A and 3 </ b> B is the distance that the ram 13 cannot enter when both of the arms protrude, that is, when one touch sensor 5 is used, the tool at the standby position is in contact with the other touch sensor 5. The distance is set to be narrower in the X-axis direction so as to interfere. However, if the other arm 3 is moved to the retracted position as shown in FIG. 3, one side of the space S (the work W side in the same figure (A), the side wall 12 side in the same figure (B)) can be opened, The interference can be prevented.

以上の如く構成された工具刃先検出装置１による工具刃先の検出工程を具体的に説明する。
まず、内径工具１４の刃先１５を検出する場合、右側のアーム３Ａを突出位置に、左側のアーム３Ｂを退避位置に夫々移動させて、図３（Ａ）のようにラム１３をアーム３Ａの左側の待機位置へ移動させる。そして、ラム１３をＸ軸プラス方向へ移動させて刃先１５をタッチセンサ５Ａの検出面６Ａに当接させる。すると、タッチセンサ５Ａから検出信号が出力され、このときの機械原点の位置データと、予め基準工具を当接させたときの位置データとに基づいて、数値制御装置が工具補正値を算出し、加工プログラムを補正することになる。 The tool edge detection process by the tool edge detection apparatus 1 configured as described above will be specifically described.
First, when detecting the cutting edge 15 of the inner diameter tool 14, the right arm 3A is moved to the protruding position and the left arm 3B is moved to the retracted position, and the ram 13 is moved to the left side of the arm 3A as shown in FIG. Move to the standby position. Then, the ram 13 is moved in the plus direction of the X axis to bring the blade edge 15 into contact with the detection surface 6A of the touch sensor 5A. Then, a detection signal is output from the touch sensor 5A, and the numerical controller calculates a tool correction value based on the position data of the machine origin at this time and the position data when the reference tool is brought into contact in advance. The machining program will be corrected.

一方、外径工具１６の刃先１７を検出する場合、左側のアーム３Ｂを突出位置に、右側のアーム３Ａを退避位置に夫々移動させて、図３（Ｂ）のようにラム１３をアーム３Ｂの右側の待機位置へ移動させる。そして、ラム１３をＸ軸マイナス方向へ移動させ刃先１７をタッチセンサ５Ｂの検出面６Ｂに当接させる。すると、タッチセンサ５Ｂから検出信号が出力され、このときの機械原点の位置データと、予め基準工具を当接させたときの位置データとに基づいて、数値制御装置が工具補正値を算出し、加工プログラムを補正することになる。
こうして加工プログラムの補正が終わると、ラム１３は加工の開始位置へ移動すると共に、突出位置のアーム３は退避位置へ移動して加工が行われる。 On the other hand, when detecting the cutting edge 17 of the outer diameter tool 16, the left arm 3B is moved to the protruding position and the right arm 3A is moved to the retracted position, and the ram 13 is moved to the arm 3B as shown in FIG. Move to the right standby position. Then, the ram 13 is moved in the X-axis minus direction, and the blade edge 17 is brought into contact with the detection surface 6B of the touch sensor 5B. Then, a detection signal is output from the touch sensor 5B, and the numerical controller calculates a tool correction value based on the position data of the machine origin at this time and the position data when the reference tool is brought into contact in advance. The machining program will be corrected.
When the correction of the machining program is completed in this manner, the ram 13 moves to the machining start position, and the arm 3 at the protruding position moves to the retracted position for machining.

このように、上記形態の工具刃先検出装置１及び立形旋盤によれば、検出面６，７を有する一対のタッチセンサ５，５を、Ｘ軸方向に所定間隔をおいて配置した一対のアーム３，３の先端に、検出面６が相対向するように別々に配置して、各アーム３を、加工室内に突出してタッチセンサ５を刃先の検出位置に保持する突出位置と、加工室内からタッチセンサ５を退避させる退避位置との間で夫々独立して移動可能に設けたことで、工具刃先検出装置１を横壁１２に極力近づけて設置できる上、検出の際には必要なタッチセンサ５に係るアーム３のみをスペースＳの片側へ突出させれば足り、狭いスペースＳでも支障なく内径工具１４及び外径工具１６の検出が行える。従って、省スペースで工具刃先検出装置１が設置でき、ワークＷの形状に制限を受けることもなくなる。   As described above, according to the tool edge detecting device 1 and the vertical lathe of the above embodiment, the pair of arms in which the pair of touch sensors 5 and 5 having the detection surfaces 6 and 7 are arranged at predetermined intervals in the X-axis direction. 3 and 3 are arranged separately so that the detection surfaces 6 face each other, and each arm 3 protrudes into the processing chamber to hold the touch sensor 5 at the detection position of the blade edge, and from the processing chamber Since the tool edge detection device 1 can be installed as close as possible to the lateral wall 12 by being provided so as to be able to move independently from the retreat position where the touch sensor 5 is retracted, the touch sensor 5 necessary for detection is also provided. It is sufficient to project only the arm 3 according to the above to one side of the space S, and the inner diameter tool 14 and the outer diameter tool 16 can be detected without any trouble even in the narrow space S. Therefore, the tool edge detection device 1 can be installed in a space-saving manner, and the shape of the workpiece W is not limited.

特にここでは、何れか一方のタッチセンサ５を突出位置に保持して刃先位置を検出する際には、他方のタッチセンサ５が突出位置で工具と干渉するようにアーム５，５の間隔をＸ軸方向で狭めたことで、アーム３，３の間隔が最小限に設定可能となってより省スペースとなる。
また、ここでは一方のタッチセンサ５Ａをワークの内径工具１４の検出用、他方の他方のタッチセンサ５Ｂをワークの外径工具１６の検出用としているので、一対のタッチセンサ５，５を工具に応じて合理的に使い分け可能となる。 In particular, here, when one of the touch sensors 5 is held at the protruding position and the edge position is detected, the distance between the arms 5 and 5 is set so that the other touch sensor 5 interferes with the tool at the protruding position. By narrowing in the axial direction, the space between the arms 3 and 3 can be set to a minimum, thereby saving more space.
Here, one touch sensor 5A is used for detecting the inner diameter tool 14 of the workpiece, and the other touch sensor 5B is used for detecting the outer diameter tool 16 of the workpiece, so that the pair of touch sensors 5, 5 is used as a tool. It will be possible to use them rationally accordingly.

なお、上記形態では、一対のアームの間隔を、何れか一方のタッチセンサで刃先位置を検出する際には他方のタッチセンサが工具と干渉するようにＸ軸方向で狭く設定しているが、図４に示すように、内径工具１４と外径工具１６との何れを装着した場合でもラム１３が両タッチセンサ５Ａ，５Ｂの間で待機位置へ進入できるようにアーム３，３の間隔を広く設定してもよい。この場合も、検出に用いない他方のタッチセンサ５を退避させることで、スペースＳの片側を開放してスペースＳを広く利用することができる。   In the above embodiment, the distance between the pair of arms is set narrow in the X-axis direction so that the other touch sensor interferes with the tool when the edge position is detected by one of the touch sensors. As shown in FIG. 4, the interval between the arms 3 and 3 is widened so that the ram 13 can enter the standby position between the touch sensors 5A and 5B regardless of whether the inner diameter tool 14 or the outer diameter tool 16 is mounted. It may be set. Also in this case, by retracting the other touch sensor 5 not used for detection, one side of the space S can be opened and the space S can be widely used.

また、アームは、上記形態のような旋回タイプに限らず、後壁からＹ軸方向に直線移動させる案内機構を設けて、突出位置と退避位置との間を出没させるようにしてもよい。さらに、タッチセンサも上記形態に限らず、検出面がＹ軸方向にも設けられるものや、Ｚ軸方向の検出面がないものであっても差し支えない。
そして、工具刃先検出装置は右側の横壁寄りに限らず、左側の横壁寄りに設置してもよい。勿論立形旋盤以外に門形マシニングセンタ等の他の工作機械にも本発明は適用可能である。 In addition, the arm is not limited to the swivel type as described above, and a guide mechanism that linearly moves from the rear wall in the Y-axis direction may be provided so that the arm can be projected and retracted between the protruding position and the retracted position. Further, the touch sensor is not limited to the above form, and the touch sensor may be provided with a detection surface also in the Y-axis direction or may have no detection surface in the Z-axis direction.
The tool edge detection device is not limited to the right side wall, but may be installed near the left side wall. Of course, the present invention can be applied to other machine tools such as a portal machining center in addition to a vertical lathe.

１・・工具刃先検出装置、２・・駆動機構部、３・・アーム、４・・載置面、５・・タッチセンサ、６，７・・検出面、１０・・後壁、１１・・嵌合窓、１２・・横壁、１３・・ラム、１４・・内径工具、１５，１７・・刃先、１６・・外径工具、Ｗ・・ワーク、Ｓ・・スペース。   1 .. Tool edge detection device 2.. Drive mechanism 3.. Arm 4.. Mounting surface 5.. Touch sensor 6, 7. Fitting window, 12 .... horizontal wall, 13 .... ram, 14 .... inner diameter tool, 15, 17 .... cutting edge, 16 .... outer diameter tool, W ... work, S ... space.

Claims (4)

工作機械に搭載され、加工室内で工具の刃先位置を検出する接触式のセンサを備えた工具刃先検出装置であって、
少なくともＸ軸方向の検出面を有する一対のセンサを、Ｘ軸方向に所定間隔をおいて配置した一対のアームの先端に、前記検出面が相対向するように別々に配置して、前記各アームを、前記加工室内に突出して前記センサを前記刃先の検出位置に保持する突出位置と、前記加工室内から前記センサを退避させる退避位置との間で夫々独立して移動可能に設けたことを特徴とする工具刃先検出装置。 A tool edge detection device equipped with a contact type sensor that is mounted on a machine tool and detects the position of an edge of a tool in a processing chamber,
A pair of sensors having at least a detection surface in the X-axis direction are separately arranged at the tips of a pair of arms arranged at a predetermined interval in the X-axis direction so that the detection surfaces face each other, and the arms Is provided so as to be independently movable between a protruding position that protrudes into the processing chamber and holds the sensor at a detection position of the cutting edge, and a retreat position that retracts the sensor from the processing chamber. A tool edge detection device. 何れか一方のセンサを突出位置に保持して刃先位置を検出する際には、他方のセンサが突出位置で工具と干渉するように前記一対のアームの間隔をＸ軸方向で狭めたことを特徴とする請求項１に記載の工具刃先検出装置。   When one of the sensors is held at the protruding position and the edge position is detected, the distance between the pair of arms is reduced in the X-axis direction so that the other sensor interferes with the tool at the protruding position. The tool edge detecting device according to claim 1. 前記センサの一方がワークの内径加工用工具の検出用、他方がワークの外径加工用工具の検出用であることを特徴とする請求項１又は２に記載の工具刃先検出装置。   3. The tool edge detection device according to claim 1, wherein one of the sensors is for detecting a tool for machining an inner diameter of a workpiece, and the other is for detecting a tool for machining an outer diameter of the workpiece. 請求項１乃至３の何れかに記載の工具刃先検出装置を、加工室にセットされる最大径のワークと前記加工室の横壁との間で両アームが突出可能な位置に搭載してなる工作機械。   A tool comprising the tool edge detecting device according to any one of claims 1 to 3 mounted at a position where both arms can project between a workpiece having a maximum diameter set in a machining chamber and a lateral wall of the machining chamber. machine.
JP2009182802A 2009-08-05 2009-08-05 Tool cutting edge detection device and machine tool Pending JP2011031368A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112621384A (en) * 2019-09-24 2021-04-09 大隈株式会社 Tool tip measuring device and machine tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112621384A (en) * 2019-09-24 2021-04-09 大隈株式会社 Tool tip measuring device and machine tool
US11378379B2 (en) 2019-09-24 2022-07-05 Okuma Corporation Tool cutting edge measuring device and machine tool
CN112621384B (en) * 2019-09-24 2024-06-07 大隈株式会社 Tool nose measuring device and machine tool

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