JP5457958B2 - Machine tool spindle equipment - Google Patents

Machine tool spindle equipment Download PDF

Info

Publication number
JP5457958B2
JP5457958B2 JP2010156021A JP2010156021A JP5457958B2 JP 5457958 B2 JP5457958 B2 JP 5457958B2 JP 2010156021 A JP2010156021 A JP 2010156021A JP 2010156021 A JP2010156021 A JP 2010156021A JP 5457958 B2 JP5457958 B2 JP 5457958B2
Authority
JP
Japan
Prior art keywords
cutting fluid
spindle
pressure
pressure sensor
main shaft
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
JP2010156021A
Other languages
Japanese (ja)
Other versions
JP2012016786A (en
Inventor
志芳 勝又
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.)
Okuma Corp
Original Assignee
Okuma Corp
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 Okuma Corp filed Critical Okuma Corp
Priority to JP2010156021A priority Critical patent/JP5457958B2/en
Publication of JP2012016786A publication Critical patent/JP2012016786A/en
Application granted granted Critical
Publication of JP5457958B2 publication Critical patent/JP5457958B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Auxiliary Devices For Machine Tools (AREA)

Description

本発明は、マシニングセンタ等の工作機械に設けられ、工具を装着して回転する主軸を備えた主軸装置に関する。   The present invention relates to a spindle device that is provided in a machine tool such as a machining center and includes a spindle that is mounted with a tool and rotates.

図2に、マシニングセンタ等の工作機械に用いられる主軸装置の一例を示す。この主軸装置1は、ハウジング2に軸受4,4・・によって軸支される中空状の主軸3を備え、その主軸3の内部に、図示しないドローバーの進退動によって拡縮動作するコレット5が設けられている。主軸3の下端(図2の下側)には、工具を保持するテーパ形状の工具ホルダ7を差し込み可能なテーパ穴6が形成されて、工具ホルダ7の後端に設けたプルスタッド8をコレット5でクランプ可能となっている。
また、主軸3の軸心には、工具ホルダ7がクランプされた状態でプルスタッド8の後端に同軸で当接する切削液の供給ロッド9が配置されている。この供給ロッド9の軸心には切削液の供給路10が形成されて、プルスタッド8への当接状態でプルスタッド8及び工具ホルダ7の軸心に形成された供給路11と連通し、実線矢印で示すように工具側へ切削液を供給可能となっている。供給ロッド9の前端における供給路10の開口際には、プルスタッド8の後端に当接して切削液の漏れを防止するシールリング12が設けられている。
FIG. 2 shows an example of a spindle device used in a machine tool such as a machining center. The main shaft device 1 includes a hollow main shaft 3 supported by bearings 4, 4... In a housing 2, and a collet 5 that expands and contracts by advancing and retracting a draw bar (not shown) is provided inside the main shaft 3. ing. A tapered hole 6 into which a tapered tool holder 7 for holding a tool can be inserted is formed at the lower end (lower side in FIG. 2) of the main shaft 3, and a pull stud 8 provided at the rear end of the tool holder 7 is colleted. 5 can be clamped.
In addition, a cutting fluid supply rod 9 that is coaxially in contact with the rear end of the pull stud 8 in a state where the tool holder 7 is clamped is disposed at the shaft center of the main shaft 3. A cutting fluid supply path 10 is formed in the axial center of the supply rod 9, and communicates with a supply path 11 formed in the axial center of the pull stud 8 and the tool holder 7 in a contact state with the pull stud 8. As indicated by the solid line arrow, the cutting fluid can be supplied to the tool side. When the supply path 10 is opened at the front end of the supply rod 9, a seal ring 12 is provided that contacts the rear end of the pull stud 8 and prevents leakage of cutting fluid.

一方、主軸装置1には、ハウジング2及び主軸3に形成した複数の貫通孔を接続することで、エアーを外部から供給してテーパ穴6の端部近傍から工具ホルダ7側へ吹き付けるエアーブロー用のエアー供給路13が形成されている。このエアー供給路13は、工具交換時に主軸3内部に点線矢印で示すようにエアーを供給することで、工具ホルダ7とテーパ穴6との間にごみ等が侵入することを防止するものである。
このエアーブローを行うためのコンプレッサや、切削液を供給するポンプ、主軸3を回転させるサーボモータ等の制御は、図示しない制御装置によって行われる。
On the other hand, the spindle device 1 is connected to a plurality of through holes formed in the housing 2 and the spindle 3 so that air is supplied from the outside and blown from the vicinity of the end of the tapered hole 6 toward the tool holder 7 side. The air supply path 13 is formed. This air supply path 13 prevents dust and the like from entering between the tool holder 7 and the tapered hole 6 by supplying air into the main shaft 3 as indicated by the dotted arrow when the tool is changed. .
Control of a compressor for performing this air blow, a pump for supplying cutting fluid, a servo motor for rotating the main shaft 3, and the like are performed by a control device (not shown).

このような主軸装置1においては、供給ロッド9に設けたシールリング12の劣化やプルスタッド8の当接不良等に起因して、供給ロッド9とプルスタッド8との間から切削液が漏れるおそれがある(二点鎖線矢印A)。漏れた切削液は、主軸3の後部でドローバーを付勢する皿ばね部に入り込んだり、エアー供給路13内に流入して軸受4に侵入したりして、構成部の損傷や劣化の原因になる。そこで、特許文献1では、エアー供給路の途中に、主軸の端面に開口する出口通孔と、その出口通孔を常態でバネ付勢によって閉塞するボールとを設けて、侵入した切削液の圧力によってボールが押圧されて出口通孔から排出されるようにすることで、切削液の漏洩を目視可能とする発明を開示している。   In such a spindle device 1, the cutting fluid may leak from between the supply rod 9 and the pull stud 8 due to deterioration of the seal ring 12 provided on the supply rod 9, poor contact of the pull stud 8, or the like. (Two-dot chain arrow A). The leaked cutting fluid enters the disc spring portion that urges the draw bar at the rear portion of the main shaft 3 or flows into the air supply path 13 and enters the bearing 4 to cause damage or deterioration of the components. Become. Therefore, in Patent Document 1, an outlet passage hole that opens to the end surface of the main shaft and a ball that normally closes the outlet passage by spring biasing are provided in the middle of the air supply path, and the pressure of the invading cutting fluid. The invention makes it possible to visually check the leakage of the cutting fluid by allowing the ball to be pressed and discharged from the outlet through hole.

特開平10−94942号公報Japanese Patent Laid-Open No. 10-94942

しかし、加工中には大量の切削液が工具から供給されて主軸の前端にも飛散することから、出口通孔から漏洩している切削液を工具から供給される切削液と区別して判断することは難しく、確実な確認が行えないおそれがあった。   However, during machining, a large amount of cutting fluid is supplied from the tool and splashes to the front end of the spindle, so the cutting fluid leaking from the outlet through hole should be distinguished from the cutting fluid supplied from the tool. Is difficult, and there is a possibility that reliable confirmation cannot be performed.

そこで、本発明は、切削液の漏洩を確実に検知することができる工作機械の主軸装置を提供することを目的としたものである。   Therefore, an object of the present invention is to provide a spindle device for a machine tool that can reliably detect leakage of a cutting fluid.

上記目的を達成するために、請求項1に記載の発明は、エアー供給路内の流体圧を検出する圧力センサを備えて、制御装置は、主軸の回転中に圧力センサによりエアー供給路内の所定の流体圧を検出すると、切削液供給路からの切削液の漏洩と判断する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、圧力センサは、主軸端部への工具の着座確認用圧力センサである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 provided with a pressure sensor for detecting a fluid pressure in the air supply path, and the control device is provided in the air supply path by the pressure sensor during rotation of the main shaft. When a predetermined fluid pressure is detected, it is determined that the cutting fluid leaks from the cutting fluid supply path.
According to a second aspect of the present invention, in the configuration of the first aspect, the pressure sensor is a pressure sensor for confirming seating of the tool on the end of the main shaft.

請求項1に記載の発明によれば、圧力センサを利用して切削液の漏洩を確実に検出可能となる。よって、主軸が損傷する前にシール不良部を交換等することができ、機械の損傷による停止時間や交換修理に掛かるコストを削減することが可能となる。
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、着座確認用の圧力センサをそのまま切削液の漏洩判断に用いることができるため、既存の圧力センサを利用した合理的な構成となり、コスト面で有利となる。
According to the first aspect of the present invention, the leakage of the cutting fluid can be reliably detected using the pressure sensor. Therefore, the defective seal portion can be replaced before the main shaft is damaged, and it is possible to reduce the stop time due to damage to the machine and the cost for replacement repair.
According to the second aspect of the invention, in addition to the effect of the first aspect, the seating confirmation pressure sensor can be used as it is for the leakage judgment of the cutting fluid. This is advantageous in terms of cost.

主軸装置の一部断面図である。It is a partial cross section figure of a main shaft device. 従来の主軸装置の一部断面図である。It is a partial cross section figure of the conventional main shaft device.

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、マシニングセンタの主軸装置1の一例を示す一部断面図で、基本的な構造は図2で説明した従来の主軸装置1と同様であるため、同じ構成部には同じ符号を付して重複する説明は省略する。
この主軸装置1にも、供給ロッド9の供給路10と工具ホルダ7の供給路11とにより、外部に設けたポンプから工具へ切削液を供給する切削液供給路が形成されている。
また、ハウジング2及び主軸3に形成した複数の貫通孔を接続することで、外部に設けたコンプレッサからエアーを供給してテーパ穴6の端部近傍から工具ホルダ7部側へ吹き付けるエアーブロー用のエアー供給路13が形成されている。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a partial cross-sectional view showing an example of a spindle device 1 of a machining center. Since the basic structure is the same as that of the conventional spindle device 1 described in FIG. 2, the same components are denoted by the same reference numerals. Thus, duplicate explanations are omitted.
The spindle device 1 also has a cutting fluid supply passage for supplying cutting fluid from an externally provided pump to the tool by the supply passage 10 of the supply rod 9 and the supply passage 11 of the tool holder 7.
Further, by connecting a plurality of through holes formed in the housing 2 and the main shaft 3, air is supplied from an external compressor and blown from the vicinity of the end of the tapered hole 6 toward the tool holder 7 side. An air supply path 13 is formed.

ここで、ハウジング2におけるエアー供給路13は、軸方向の貫通孔14と、その貫通孔14の前端で繋がる半径方向の貫通孔15とで形成されているが、貫通孔15の外端には、プラグに代えて、先端を貫通孔14との接続部に突出させた圧力センサ16が設けられている。   Here, the air supply path 13 in the housing 2 is formed by an axial through hole 14 and a radial through hole 15 connected at the front end of the through hole 14. Instead of the plug, a pressure sensor 16 having a tip projecting from the connecting portion with the through hole 14 is provided.

この圧力センサ16は、主軸3を回転させるサーボモータや切削液を供給路10に供給するポンプ、エアー供給路13へ空気を圧送するコンプレッサ等を制御する図示しない制御装置に接続されて、エアー供給路13内の流体圧を検出可能となっている。
ここで、主軸3が回転しない工具交換時には、0.3〜0.5Mpa程度のエアーがエアー供給路13内に供給されるが、制御装置は、主軸3が回転停止中であれば圧力センサ16がエアー圧力を検出しても切削液の漏洩と判断しない。
This pressure sensor 16 is connected to a control device (not shown) for controlling a servo motor for rotating the spindle 3, a pump for supplying cutting fluid to the supply passage 10, a compressor for pressure-feeding air to the air supply passage 13, and the like. The fluid pressure in the passage 13 can be detected.
Here, when changing the tool in which the main shaft 3 does not rotate, air of about 0.3 to 0.5 Mpa is supplied into the air supply path 13. Even if air pressure is detected, it is not judged that the cutting fluid has leaked.

一方、主軸3の回転中は工具交換が行われず、エアー供給路13にエアーが供給されないため、圧力センサ16に流体圧は加わらない。しかし、シールリング12の劣化等によって供給路10から主軸3の内部に切削液が漏れた際には、二点鎖線矢印Bで示すように遠心力によってエアー供給路13内に切削液が進入し、圧力センサ16に流体圧が加わる。よって、制御装置は、この主軸3回転中の流体圧の検出によって切削液の漏洩と判断する。特に、切削液の供給圧は1〜7Mpaとエアー供給路13へのエアー圧力よりも高圧であるから、圧力センサ16がこれを検出することで切削液の漏洩は確実に判断可能となる。なお、切削液の漏洩判断後は、直ちに主軸3の回転を停止させてもよいが、ランプや警告音等による報知にとどめるようにしてもよい。   On the other hand, no tool change is performed while the main shaft 3 is rotating, and no air is supplied to the air supply path 13, so no fluid pressure is applied to the pressure sensor 16. However, when the cutting fluid leaks from the supply passage 10 into the main shaft 3 due to deterioration of the seal ring 12 or the like, the cutting fluid enters the air supply passage 13 by centrifugal force as indicated by a two-dot chain arrow B. The fluid pressure is applied to the pressure sensor 16. Therefore, the control device determines that the cutting fluid is leaked by detecting the fluid pressure during the rotation of the main shaft 3. In particular, since the supply pressure of the cutting fluid is 1 to 7 MPa and higher than the air pressure to the air supply path 13, the leakage of the cutting fluid can be reliably determined by the pressure sensor 16 detecting this. It should be noted that the rotation of the main shaft 3 may be stopped immediately after determining the leakage of the cutting fluid, but may be limited to notification by a lamp, a warning sound, or the like.

このように、上記形態の主軸装置1によれば、エアー供給路13内の流体圧を検出する圧力センサ16を備えて、制御装置は、主軸3の回転中に圧力センサ16によりエアー供給路13内の所定の流体圧を検出すると、切削液供給路からの切削液の漏洩と判断するようにしたことで、圧力センサ16を利用して切削液の漏洩を確実に検出可能となる。よって、主軸3が損傷する前にシール不良部を交換等することができ、機械の損傷による停止時間や交換修理に掛かるコストを削減することが可能となる。   Thus, according to the main shaft device 1 of the above embodiment, the pressure sensor 16 that detects the fluid pressure in the air supply passage 13 is provided, and the control device is operated by the pressure sensor 16 during the rotation of the main shaft 3. When the predetermined fluid pressure is detected, it is determined that the cutting fluid leaks from the cutting fluid supply passage, and therefore the leakage of the cutting fluid can be reliably detected using the pressure sensor 16. Therefore, it is possible to replace the defective seal portion before the main shaft 3 is damaged, and it is possible to reduce the stop time due to damage to the machine and the cost for replacement repair.

なお、上記形態では、エアーブロー用のエアー供給路内に圧力センサを設けた例を説明しているが、本発明はこれに限らず、例えばエアーと圧力センサとを工具の着座確認用として使用している主軸装置でも適用できる。この主軸装置では、工具交換時、主軸のテーパ穴6に所定圧のエアーを供給し、その圧力を圧力センサによって検出することにより、工具ホルダ7が主軸のテーパ穴6へ確実に着座したか確認するものである。よって、確実に着座が行われている状態では、エアー圧と同等の圧力(0.3〜0.5Mpa程度)が圧力センサに加わり、着座が不完全でエアーが漏れている場合は、圧力が0.2Mpa程度以下に低下することで制御装置が着座を確認することになるが、この着座確認も主軸の回転中は行われない(エアー供給路にエアーが供給されない)ので、主軸回転中に流体圧が検出されると、先の形態と同様に切削液の漏洩と判断できる。   In the above embodiment, an example in which a pressure sensor is provided in the air supply path for air blow is described. However, the present invention is not limited to this, and for example, the air and the pressure sensor are used for checking the seating of the tool. It can also be applied to the main spindle device. In this spindle device, when the tool is changed, air of a predetermined pressure is supplied to the taper hole 6 of the spindle, and the pressure is detected by a pressure sensor to check whether the tool holder 7 is securely seated in the taper hole 6 of the spindle. To do. Therefore, in the state where the seating is performed reliably, a pressure equivalent to the air pressure (about 0.3 to 0.5 MPa) is applied to the pressure sensor, and if the seating is incomplete and the air leaks, the pressure is The control device confirms the seating by lowering to about 0.2 Mpa or less, but this seating confirmation is also not performed while the main shaft is rotating (air is not supplied to the air supply path). When the fluid pressure is detected, it can be determined that the cutting fluid has leaked as in the previous embodiment.

このように、着座確認用の圧力センサを切削液の漏洩の判断に用いても、先の形態と同様に切削液の漏洩を確実に検出可能となる。よって、主軸が損傷する前にシール不良部を交換等することができ、機械の損傷による停止時間や交換修理に掛かるコストを削減することが可能となる。
特にここでは、着座確認用の圧力センサをそのまま切削液の漏洩判断に用いることができるため、既存の圧力センサを利用した合理的な構成となり、新たに圧力センサを用いる先の形態よりコスト面で有利となる。
As described above, even when the seating confirmation pressure sensor is used for determining the leakage of the cutting fluid, the leakage of the cutting fluid can be reliably detected as in the previous embodiment. Therefore, the defective seal portion can be replaced before the main shaft is damaged, and it is possible to reduce the stop time due to damage to the machine and the cost for replacement repair.
In particular, the pressure sensor for seating confirmation can be used as it is for the judgment of leakage of the cutting fluid, so that it becomes a rational configuration using the existing pressure sensor, which is more cost-effective than the previous form using the new pressure sensor. It will be advantageous.

その他、切削液供給路やエアー供給路等の具体的な構造は上記形態に限らず、適宜変更可能で、圧力センサも、逆流した切削液による圧力を検出することからハウジングに設けることが望ましいが、ハウジングに接続したエアー配管に組み込む等してハウジングの外部に設けることは可能である。
また、圧力センサによる流体圧の検出とその後の処理も、例えば流体圧を第一の圧力と、その圧力値より高い第二の圧力として、第一の圧力を検出した際には報知にとどめ、第二の圧力を検出すると主軸の回転を停止させるといった変更が可能である。
In addition, the specific structure such as the cutting fluid supply path and the air supply path is not limited to the above-described form, and can be changed as appropriate, and the pressure sensor is preferably provided in the housing because it detects the pressure due to the backflowing cutting fluid. It can be provided outside the housing by being incorporated into an air pipe connected to the housing.
In addition, the detection of the fluid pressure by the pressure sensor and the subsequent processing are also limited to notification when the first pressure is detected, for example, the fluid pressure is the first pressure and the second pressure higher than the pressure value. When the second pressure is detected, a change such as stopping the rotation of the main shaft is possible.

さらに、圧力センサは一箇所に限らず、複数箇所に設けて、全ての圧力センサが所定の流体圧を検出した場合にのみ切削液の漏洩と判断したり、切削液供給路に近い側の圧力センサが所定の流体圧が検出した際には報知にとどめ、遠い側の圧力センサも所定の流体圧を検出した際に主軸の回転を停止させたりする態様も考えられる。   Furthermore, the pressure sensor is not limited to one location, and is provided at a plurality of locations. Only when all the pressure sensors detect a predetermined fluid pressure, it is determined that the cutting fluid is leaked, or the pressure on the side close to the cutting fluid supply path It is also conceivable that when the predetermined fluid pressure is detected by the sensor, only notification is given, and the rotation of the main shaft is stopped when the far-side pressure sensor also detects the predetermined fluid pressure.

1・・主軸装置、2・・ハウジング、3・・主軸、6・・テーパ穴、7・・工具ホルダ、8・・プルスタッド、9・・供給ロッド、10,11・・供給路、12・・シールリング、13・・エアー供給路、14,15・・貫通孔、16・・圧力センサ。   1 .. Spindle device 2.. Housing 3.. Spindle 6. Tapered hole 7.. Tool holder 8. Pull stud 9 9 Supply rod 10 11 11 Supply path 12・ Seal ring, 13 ・ ・ Air supply path, 14, 15 ・ ・ Through hole, 16 ・ ・ Pressure sensor.

Claims (2)

ハウジングと、そのハウジングに軸支され、端部に工具を装着して回転駆動する主軸と、その主軸の回転を制御する制御装置とを備え、前記主軸内に、前記工具に切削液を供給する切削液供給路を、前記ハウジング及び主軸に、前記端部にエアーを供給するエアー供給路をそれぞれ設けて、前記制御装置は、前記主軸の回転中に前記切削液供給路への前記切削液の供給制御を、前記主軸の回転停止時に前記エアー供給路への前記エアーの供給制御をそれぞれ行う工作機械の主軸装置であって、
前記エアー供給路内の流体圧を検出する圧力センサを備えて、前記制御装置は、前記主軸の回転中に前記圧力センサにより前記エアー供給路内の所定の流体圧を検出すると、前記切削液供給路からの前記切削液の漏洩と判断することを特徴とする工作機械の主軸装置。
A housing, a spindle that is pivotally supported by the housing, is driven to rotate by mounting a tool at an end thereof, and a control device that controls the rotation of the spindle, and the cutting fluid is supplied to the tool in the spindle. A cutting fluid supply passage is provided in the housing and the main shaft, and an air supply passage for supplying air to the end portion is provided, and the control device supplies the cutting fluid to the cutting fluid supply passage during rotation of the main shaft. A spindle device of a machine tool that performs supply control of supply of the air to the air supply path when rotation of the spindle is stopped,
A pressure sensor for detecting a fluid pressure in the air supply path, and the control device detects the predetermined fluid pressure in the air supply path by the pressure sensor during rotation of the main shaft; A spindle device for a machine tool, characterized in that it is determined that the cutting fluid leaks from a road.
前記圧力センサは、前記主軸端部への工具の着座確認用圧力センサであることを特徴とする請求項1に記載の工作機械の主軸装置。   The spindle device for a machine tool according to claim 1, wherein the pressure sensor is a pressure sensor for confirming seating of a tool on an end portion of the spindle.
JP2010156021A 2010-07-08 2010-07-08 Machine tool spindle equipment Expired - Fee Related JP5457958B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010156021A JP5457958B2 (en) 2010-07-08 2010-07-08 Machine tool spindle equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010156021A JP5457958B2 (en) 2010-07-08 2010-07-08 Machine tool spindle equipment

Publications (2)

Publication Number Publication Date
JP2012016786A JP2012016786A (en) 2012-01-26
JP5457958B2 true JP5457958B2 (en) 2014-04-02

Family

ID=45602413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010156021A Expired - Fee Related JP5457958B2 (en) 2010-07-08 2010-07-08 Machine tool spindle equipment

Country Status (1)

Country Link
JP (1) JP5457958B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6998288B2 (en) * 2018-10-31 2022-01-18 日精ホンママシナリー株式会社 Spindle for rotary tools with tool seating confirmation function

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2914918B2 (en) * 1996-09-20 1999-07-05 株式会社牧野フライス製作所 Spindle device of machine tool
JP3409321B2 (en) * 1997-02-11 2003-05-26 豊和工業株式会社 Spindle device of machine tool
JP2003001544A (en) * 2001-06-26 2003-01-08 Nippei Toyama Corp Inspection tool and inspection method for seal used in spindle unit of machine tool
JP4093403B2 (en) * 2002-06-24 2008-06-04 リックス株式会社 Rotary joint
JP2005249008A (en) * 2004-03-02 2005-09-15 Rix Corp Rotary joint

Also Published As

Publication number Publication date
JP2012016786A (en) 2012-01-26

Similar Documents

Publication Publication Date Title
CN101980811B (en) Tight contact state detector of tool in machine tool
JP3979091B2 (en) Turbo fluid machine and dry gas seal used therefor
WO2010137409A1 (en) Cutting liquid supply device for machine tool
US5967716A (en) Coolant feeder
NL8601341A (en) DETECTOR FOR INDICATING THE ABNORMAL OPERATION OF A TOOL.
JP5294777B2 (en) Mill spindle of machine tool
WO2016080014A1 (en) Seal gas supply control method, seal gas supply control appratus, and rotary machine
JP5457958B2 (en) Machine tool spindle equipment
WO1996002353A1 (en) Magnetic bearing spindle apparatus
JP2007090514A (en) Abnormality determination method and abnormality determination device in mounting tool holder to spindle device in machine tool
CN109746695A (en) Rotating plate device
JP3214465U (en) Machine Tools
JP2914918B2 (en) Spindle device of machine tool
JP2017159383A (en) Clamp device
JP4994824B2 (en) Spindle device
JP2006334676A (en) Machine tool, foreign matter removing method and foreign matter detecting method
JP6792462B2 (en) Mount flange end face condition confirmation jig
JP2003260638A (en) Tool clamp abnormality detector of machine tool
JP2008075724A (en) Spindle device
JP2006055975A (en) Workpiece clamping device
JP4492405B2 (en) Work detection method
KR100970556B1 (en) Air pressure control method and device for preventing coolant infiltration of main spindle
JP2002263988A (en) Tool installation detecting device
JP2006102868A (en) Cutting machine
JP2010115763A (en) Cutting tool and chip sucking/recovering system

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20130129

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20131217

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20131219

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140110

R150 Certificate of patent or registration of utility model

Ref document number: 5457958

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees