JP2009001317A - Liquid feeding apparatus - Google Patents

Liquid feeding apparatus Download PDF

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JP2009001317A
JP2009001317A JP2007165356A JP2007165356A JP2009001317A JP 2009001317 A JP2009001317 A JP 2009001317A JP 2007165356 A JP2007165356 A JP 2007165356A JP 2007165356 A JP2007165356 A JP 2007165356A JP 2009001317 A JP2009001317 A JP 2009001317A
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supply
liquid
lubricating oil
pump
distributor
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JP4981537B2 (en
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Takashi Nagase
隆 永瀬
Tomoharu Ando
知治 安藤
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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 provide a simply structured liquid feeding apparatus capable of achieving supplying a small amount of liquid and reducing the cost of the whole apparatus. <P>SOLUTION: Of a plurality of lubricant oil supplying tubes 31-38 having the same line resistance, the tubes 31-34 are guided to a bearing of a main spindle device. A divider 21 for dividing the oil is interposed between a supplying pump 25 and the tubes 31-38. The divider 21 equally divides the oil delivered from the pump 25 into the tubes 31-38 and the oil divided in a less amount than the amount of the oil delivered by the pump 25 is supplied to the bearing. Therefore, even if a conventionally and widely used supply pump is adopted, a small amount of the lubricant oil can be supplied by dividing the oil into eight equal parts. Thus, the liquid feeding apparatus can be structured simple and less costly. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、たとえば工作機械において主軸装置の軸受へ潤滑油を供給する潤滑油供給装置等といった液体供給装置に関するものである。   The present invention relates to a liquid supply apparatus such as a lubricating oil supply apparatus that supplies lubricating oil to a bearing of a spindle device in a machine tool, for example.

液体供給装置の一例である潤滑油供給装置において、工作機械の主軸装置に備えられている軸受等へ潤滑油を供給するにあたっては、０．０００５ｍｌ〜０．０１ｍｌ／ショット程度の微少量な供給が好ましく、需要者に望まれている。そのため、専用の高性能な潤滑油ポンプを備えることにより、当該微少量な潤滑油の供給を可能とした潤滑油供給装置（たとえば特許文献１に開示）が考案されている。   In a lubricating oil supply apparatus which is an example of a liquid supply apparatus, when supplying lubricating oil to a bearing or the like provided in a spindle device of a machine tool, a small amount of about 0.0005 ml to 0.01 ml / shot is supplied. Preferably, it is desired by consumers. Therefore, a lubricating oil supply device (for example, disclosed in Patent Document 1) that can supply a minute amount of lubricating oil by providing a dedicated high-performance lubricating oil pump has been devised.

特開２００１−３１５０４１号公報JP 2001-315041 A

しかしながら、上記潤滑油供給装置では、微少量な潤滑油を供給可能とする専用の潤滑油ポンプが非常に複雑且つ高価であるため、当該潤滑油ポンプを備えた潤滑油供給装置全体の構成も複雑化し、また、高価となるといった問題がある。   However, in the above lubricating oil supply device, a dedicated lubricating oil pump that can supply a very small amount of lubricating oil is very complicated and expensive, so the configuration of the entire lubricating oil supplying device including the lubricating oil pump is also complicated. And there is a problem that it becomes expensive.

そこで、本発明は、上記問題に鑑みなされたものであって、簡易な構成で微少量な液体の供給が実現可能であり、装置全体のコストを低減することができる液体供給装置を提供しようとするものである。   Therefore, the present invention has been made in view of the above problems, and is intended to provide a liquid supply apparatus that can supply a minute amount of liquid with a simple configuration and can reduce the cost of the entire apparatus. To do.

上記目的を達成するために、本発明のうち請求項１に記載の発明は、供給ポンプから吐出された液体を所定の供給位置へ供給路を介して供給する液体供給装置であって、前記供給路を、同じ管路抵抗を有する複数の供給管のうちの少なくとも１つとするとともに、前記供給ポンプと前記複数の供給管との間に液体を分配するための分配器を介在させ、前記分配器により、前記供給ポンプが吐出した液体を各供給管へ均等に分配し、前記供給路を介して、供給ポンプが吐出した液体より少量となる分配された液体を前記所定の供給位置へ供給することを特徴とする。
請求項２に記載の発明は、請求項１に記載の発明において、供給位置へ導かれない供給管を、供給ポンプへ液体を供給する液体タンクへ連結し、当該供給管内へ分配された液体を前記液体タンクへ還元することを特徴とする。
請求項３に記載の発明は、請求項１又は２に記載の発明において、分配器に、各供給管の開閉操作を行う開閉手段を設け、開状態とする供給管の数を変更することにより、開状態にある各供給管へ分配される液体量を調整可能としたことを特徴とする。
また、上記目的を達成するために、本発明のうち請求項４に記載の発明は、供給ポンプから吐出された液体を所定の供給位置へ供給路を介して供給する液体供給装置であって、前記供給路を、複数の供給管のうちの少なくとも１つとするとともに、前記供給ポンプと前記複数の供給管との間に液体を分配するための分配器を介在させ、該分配器に、各前記供給管へ送る液体の流量を夫々調整するための流量調整手段を設け、前記分配器において、前記供給ポンプが吐出した液体を各供給管毎に流量を調整した後に分配し、前記供給路を介して、供給ポンプが吐出した液体より少量となる分配された液体を前記所定の供給位置へ供給する一方、供給位置へ導かれない供給管を、供給ポンプへ液体を供給する液体タンクへ連結し、当該供給管内へ分配された液体を前記液体タンクへ還元することを特徴とする。 In order to achieve the above object, the invention according to claim 1 of the present invention is a liquid supply apparatus for supplying liquid discharged from a supply pump to a predetermined supply position via a supply path, wherein the supply The path is at least one of a plurality of supply pipes having the same pipe resistance, and a distributor for distributing liquid is interposed between the supply pump and the plurality of supply pipes, and the distributor Thus, the liquid discharged by the supply pump is evenly distributed to each supply pipe, and the distributed liquid that is smaller than the liquid discharged by the supply pump is supplied to the predetermined supply position via the supply path. It is characterized by.
The invention according to claim 2 is the invention according to claim 1, wherein the supply pipe that is not led to the supply position is connected to a liquid tank that supplies liquid to the supply pump, and the liquid distributed in the supply pipe is supplied. The liquid is reduced to the liquid tank.
The invention according to claim 3 is the invention according to claim 1 or 2, wherein the distributor is provided with opening / closing means for opening / closing each supply pipe, and the number of supply pipes to be opened is changed. The amount of liquid distributed to each supply pipe in the open state can be adjusted.
In order to achieve the above object, the invention according to claim 4 of the present invention is a liquid supply apparatus that supplies liquid discharged from a supply pump to a predetermined supply position via a supply path, The supply path is at least one of a plurality of supply pipes, and a distributor for distributing a liquid is interposed between the supply pump and the plurality of supply pipes. A flow rate adjusting means for adjusting the flow rate of the liquid sent to the supply pipe is provided, and in the distributor, the liquid discharged from the supply pump is distributed after adjusting the flow rate for each of the supply pipes, via the supply path. A supply pipe that does not lead to the supply position is connected to a liquid tank that supplies the liquid to the supply pump, while supplying the distributed liquid that is smaller than the liquid discharged by the supply pump to the predetermined supply position. Into the supply pipe The disposed liquid which comprises reducing to the liquid tank.

請求項１に記載の発明によれば、供給路が、同じ管路抵抗を有する複数の供給管のうちの少なくとも１つであり、また、供給ポンプと複数の供給管との間に液体を分配するための分配器を介在させ、分配器により、供給ポンプが吐出した液体を各供給管へ均等に分配し、供給路を介して、供給ポンプが吐出した液体より少量となる分配された液体を所定の供給位置へ供給するようにした。したがって、たとえば従来から一般に使用されている０．０１ｍｌ／ショットの吐出能力しかない供給ポンプを採用したとしても、８等分に分配することで０．００１２５ｍｌ／ショットといった微少量な液体の供給を実現することができ、構成の簡素化、装置の低コスト化を図ることができる。
また、請求項２に記載の発明によれば、供給位置へ導かれない供給管を、供給ポンプへ液体を供給する液体タンクへ連結し、当該供給管内へ分配された液体を液体タンクへ還元するようにしているため、液体の消費量を最小限に抑えることができ、省エネ化を図ることができる。
さらに、請求項３に記載の発明によれば、分配器に、各供給管の開閉操作を行う開閉手段を設け、開状態とする供給管の数を変更することにより、開状態にある各供給管へ分配される液体量を調整可能としている。したがって、必要に応じて液体の供給位置への供給量を容易に微調整可能であり、汎用性の極めて高い液体供給装置とすることができる。
一方、請求項４によっても、供給路を、複数の供給管のうちの少なくとも１つとするとともに、供給ポンプと複数の供給管との間に液体を分配するための分配器を介在させるとともに、分配器に、各供給管へ送る液体の流量を夫々調整するための流量調整手段を設けており、分配器において、供給ポンプが吐出した液体を各供給管毎に流量を調整した後に分配し、供給路を介して、供給ポンプが吐出した液体より少量となる分配された液体を所定の供給位置へ供給するようにしている。したがって、請求項１に記載の発明同様、微少量な潤滑油供給を実現することができ、構成の簡素化、装置の低コスト化を図ることができるし、流量調整手段により供給位置毎に液体の供給量を容易に調整することができ、汎用性が非常に高い。また、供給位置へ導かれない供給管を、供給ポンプへ液体を供給する液体タンクへ連結し、当該供給管内へ分配された液体を液体タンクへ還元するため、省エネ化を図ることができる。 According to the first aspect of the present invention, the supply path is at least one of a plurality of supply pipes having the same pipe line resistance, and the liquid is distributed between the supply pump and the plurality of supply pipes. The liquid dispensed by the supply pump is evenly distributed to each supply pipe by the distributor, and the distributed liquid that is smaller than the liquid discharged by the supply pump is supplied via the supply path. It was made to supply to a predetermined supply position. Therefore, for example, even if a conventional supply pump with a discharge capacity of only 0.01 ml / shot is adopted, a small amount of liquid such as 0.00125 ml / shot can be supplied by dividing into 8 equal parts. Therefore, the configuration can be simplified and the cost of the apparatus can be reduced.
According to the second aspect of the present invention, the supply pipe that is not led to the supply position is connected to the liquid tank that supplies the liquid to the supply pump, and the liquid distributed in the supply pipe is reduced to the liquid tank. As a result, liquid consumption can be minimized and energy saving can be achieved.
Further, according to the invention described in claim 3, the distributor is provided with opening / closing means for opening and closing each supply pipe, and each supply in the open state is changed by changing the number of supply pipes to be opened. The amount of liquid distributed to the tube can be adjusted. Therefore, the supply amount of the liquid to the supply position can be easily finely adjusted as necessary, and a highly versatile liquid supply apparatus can be obtained.
On the other hand, according to claim 4, the supply path is at least one of the plurality of supply pipes, and a distributor for distributing the liquid is interposed between the supply pump and the plurality of supply pipes. The device is provided with flow rate adjusting means for adjusting the flow rate of the liquid to be sent to each supply pipe. In the distributor, the liquid discharged from the supply pump is distributed and supplied after adjusting the flow rate for each supply pipe. Through the passage, the dispensed liquid, which is smaller than the liquid discharged by the supply pump, is supplied to a predetermined supply position. Therefore, as in the first aspect of the invention, a very small amount of lubricating oil can be supplied, the configuration can be simplified, and the cost of the apparatus can be reduced. Can be easily adjusted, and the versatility is very high. Further, since the supply pipe that is not led to the supply position is connected to a liquid tank that supplies liquid to the supply pump, and the liquid distributed in the supply pipe is reduced to the liquid tank, energy saving can be achieved.

以下、本発明の一実施形態となる液体供給装置について、図面をもとに説明する。尚、本実施形態では、液体供給装置をその一例である潤滑油供給装置とし、工作機械の主軸装置に備えられた軸受１へ潤滑油（液体）を供給する潤滑油供給装置について説明する。   Hereinafter, a liquid supply apparatus according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a lubricating oil supply apparatus that supplies the lubricating oil (liquid) to the bearing 1 provided in the spindle device of the machine tool will be described using the liquid supply apparatus as an example of the lubricating oil supply apparatus.

［実施例１］
まず、潤滑油供給装置の第１実施例について、図１及び図２をもとに説明する。図１は、主軸装置に備えられた潤滑油の供給対象となる転がり軸受１の軸方向への縦断面説明図であり、図２は、第１実施例の潤滑油供給装置の潤滑油供給部について示した説明図である。
９は、立形マシニングセンタ等といった工作機械の主軸装置のハウジングであり、該ハウジング９内において、所定の供給位置となる４つの転がり軸受（以下、単に軸受と称す）１が主軸８を回転自在に支持している。各軸受１は、同心に配設されてハウジング９内で主軸８を軸支する内輪２及び外輪５と、該内輪２及び外輪５間に挟持された複数の転動体としてのボール３と、該複数のボール３を周方向に保持し、ボール３相互の相対位置を位置決めするリング状の保持器４とを具備している。また、当該軸受１の近傍位置には、先細り状に形成されたノズル７が備えられており、当該ノズル７から潤滑油を噴出することによって、軸受１内へ潤滑油を供給し、軸受１の焼付き等を防止可能としている。 [Example 1]
First, a first embodiment of the lubricating oil supply apparatus will be described with reference to FIGS. FIG. 1 is a longitudinal cross-sectional explanatory view in the axial direction of a rolling bearing 1 to be supplied with lubricating oil provided in the main shaft device, and FIG. 2 is a lubricating oil supply portion of the lubricating oil supply device of the first embodiment. It is explanatory drawing shown about.
Reference numeral 9 denotes a housing of a spindle device of a machine tool such as a vertical machining center. In the housing 9, four rolling bearings (hereinafter simply referred to as bearings) 1 serving as predetermined supply positions can freely rotate the spindle 8. I support it. Each bearing 1 is arranged concentrically and supports an inner ring 2 and an outer ring 5 that support the main shaft 8 in a housing 9, a plurality of balls 3 as rolling elements sandwiched between the inner ring 2 and the outer ring 5, A plurality of balls 3 are held in the circumferential direction, and a ring-shaped cage 4 that positions relative positions of the balls 3 is provided. Further, a tapered nozzle 7 is provided in the vicinity of the bearing 1, and the lubricating oil is supplied into the bearing 1 by ejecting the lubricating oil from the nozzle 7. It is possible to prevent seizure.

一方、軸受１へ潤滑油を供給するための潤滑油供給装置は、潤滑油が貯められている潤滑油タンク２７と、従来から一般的に使用されている０．０１ｍｌ／ショットの吐出能力を有する供給ポンプ２５と、供給ポンプ２５から吐出された潤滑油を軸受１等に供給するための８本の潤滑油供給管３１〜３８と、潤滑油を各潤滑油供給管３１〜３８へ分配するための分配器２１とを備えてなる。各潤滑油供給管３１〜３８は、それぞれ管路抵抗が同一となるように形成されており、送油路２８を介して供給ポンプ２５と接続された分配器２１に連結されている。また、分配器２１には、潤滑油供給管３１〜３８を開閉するための開閉制御装置（開閉手段）２６、２６が設けられており、１つの開閉制御装置２６により４本の潤滑油供給管３１〜３８を同時開閉可能となっている。したがって、全潤滑油供給管３１〜３８を開いた状態であると、供給ポンプ２５から吐出された潤滑油（０．０１ｍｌ／ショット）は、分配器２１によりそれぞれ１／８ずつ（０．００１２５ｍｌ／ショット）に分配され、各潤滑油供給管３１〜３８へ送られることになる。一方、開閉制御装置２６を作動させて、たとえば潤滑油供給管３５〜３８を閉じた状態とすると、供給ポンプ２５から吐出された潤滑油（０．０１ｍｌ／ショット）は、分配器２１によりそれぞれ１／４ずつ（０．００２５ｍｌ／ショット）に分配され、各潤滑油供給管３１〜３４へ送られることになる。
また、８本の潤滑油供給管のうち、潤滑油供給管３１〜３４（供給路）のみが主軸装置の４つの軸受１と接続され、その他の潤滑油供給管３５〜３８は、潤滑油タンク２７へ導かれ、分配器２１を介して送られてきた潤滑油を潤滑油タンク２７へ還元するようになっている。尚、供給ポンプ２５の供給動作は、ＮＣ制御装置等の図示しない制御装置により、所定時間（たとえば、２０〜４８０ｓｅｃ）毎に供給動作するよう制御されている。 On the other hand, the lubricating oil supply device for supplying the lubricating oil to the bearing 1 has a lubricating oil tank 27 in which the lubricating oil is stored and a discharge capacity of 0.01 ml / shot that has been generally used conventionally. Supply pump 25, eight lubricating oil supply pipes 31 to 38 for supplying the lubricating oil discharged from the supply pump 25 to the bearing 1, etc., and for distributing the lubricating oil to the respective lubricating oil supply pipes 31 to 38 The distributor 21 is provided. Each of the lubricating oil supply pipes 31 to 38 is formed so as to have the same pipe resistance, and is connected to a distributor 21 connected to the supply pump 25 via an oil feeding path 28. Further, the distributor 21 is provided with opening / closing control devices (opening / closing means) 26 and 26 for opening and closing the lubricating oil supply tubes 31 to 38, and four lubricating oil supply tubes are provided by one opening / closing control device 26. 31-38 can be opened and closed simultaneously. Accordingly, when all the lubricating oil supply pipes 31 to 38 are opened, the lubricating oil (0.01 ml / shot) discharged from the supply pump 25 is 1/8 each (0.00125 ml / Shot) and sent to the lubricating oil supply pipes 31-38. On the other hand, when the open / close control device 26 is operated to close the lubricating oil supply pipes 35 to 38, for example, the lubricating oil (0.01 ml / shot) discharged from the supply pump 25 is 1 by the distributor 21. / 4 (0.0025 ml / shot) and distributed to each of the lubricating oil supply pipes 31-34.
Of the eight lubricating oil supply pipes, only the lubricating oil supply pipes 31 to 34 (supply paths) are connected to the four bearings 1 of the spindle device, and the other lubricating oil supply pipes 35 to 38 are provided as lubricating oil tanks. The lubricating oil guided to 27 and sent via the distributor 21 is reduced to the lubricating oil tank 27. The supply operation of the supply pump 25 is controlled by a control device (not shown) such as an NC control device so that the supply operation is performed every predetermined time (for example, 20 to 480 sec).

上記潤滑油供給装置における軸受１への潤滑油の供給について説明する。
制御装置から動作指令により供給ポンプ２５が動作すると、１ショットあたり０．０１ｍｌの潤滑油が分配器２１へ吐出される。ここで、分配器２１において、全潤滑油供給管３１〜３８が開かれていると潤滑油は均等に８分割され、０．００１２５ｍｌの潤滑油が各潤滑油供給管３１〜３８へ送られる。このうち、潤滑油供給管３１〜３４へ送られた潤滑油は、各軸受１近傍に備えられているノズル７の先端から噴出され、各軸受１内へ供給される。また、潤滑油供給管３５〜３８へ送られた潤滑油は、潤滑油タンク２７へ還元される。
一方、開閉制御装置２６により潤滑油供給管３５〜３８を閉じると、潤滑油は均等に４分割されて潤滑油供給管３１〜３４へ送られる。そして、０．００２５ｍｌの潤滑油が各ノズル７の先端から噴出され、各軸受１内へ供給されることになる。 The supply of the lubricating oil to the bearing 1 in the lubricating oil supply device will be described.
When the supply pump 25 is operated according to an operation command from the control device, 0.01 ml of lubricating oil is discharged to the distributor 21 per shot. Here, in the distributor 21, when all the lubricating oil supply pipes 31 to 38 are opened, the lubricating oil is equally divided into eight, and 0.00125 ml of lubricating oil is sent to the respective lubricating oil supply pipes 31 to 38. Among these, the lubricating oil sent to the lubricating oil supply pipes 31 to 34 is ejected from the tip of the nozzle 7 provided in the vicinity of each bearing 1 and supplied into each bearing 1. The lubricating oil sent to the lubricating oil supply pipes 35 to 38 is returned to the lubricating oil tank 27.
On the other hand, when the lubricating oil supply pipes 35 to 38 are closed by the opening / closing control device 26, the lubricating oil is equally divided into four and sent to the lubricating oil supply pipes 31 to 34. Then, 0.0025 ml of lubricating oil is ejected from the tip of each nozzle 7 and supplied into each bearing 1.

以上のように構成される潤滑油供給装置によれば、分配器２１により供給ポンプ２５から送り出された潤滑油を複数の潤滑油供給管３１〜３８に分配した後、必要量のみを軸受１等へ供給可能としている。したがって、従来から一般に使用されている０．０１ｍｌ／ショットの吐出能力しかない供給ポンプ２５を採用したとしても、０．００１２５ｍｌ／ショットといった微少量な潤滑油供給を実現することができ、構成の簡素化、装置の低コスト化を図ることができる。
また、供給ポンプ２５から送り出される潤滑油のうち、必要でない潤滑油を再び潤滑油タンク２７へ還元するため、潤滑油の消費量を最小限に抑えることができ、省エネ化を図ることができる。
さらに、分配器２１に潤滑油供給管３１〜３８を開閉するための開閉制御装置２６、２６を設けているため、開状態にある潤滑油供給管への１ショットあたりの潤滑油量を調節することができる。したがって、必要に応じて各軸受１への潤滑油の供給量を微調整することができ、汎用性が高い。 According to the lubricating oil supply apparatus configured as described above, after distributing the lubricating oil sent from the supply pump 25 by the distributor 21 to the plurality of lubricating oil supply pipes 31 to 38, only the necessary amount is given to the bearing 1 or the like. Can be supplied. Therefore, even if the supply pump 25 having a discharge capacity of 0.01 ml / shot which is generally used from the past is adopted, a very small amount of lubricating oil supply of 0.00125 ml / shot can be realized, and the structure is simple. And cost reduction of the apparatus can be achieved.
Further, since unnecessary lubricating oil sent out from the supply pump 25 is reduced again to the lubricating oil tank 27, the consumption amount of the lubricating oil can be minimized and energy saving can be achieved.
Furthermore, since the distributor 21 is provided with the opening / closing control devices 26 and 26 for opening and closing the lubricating oil supply pipes 31 to 38, the amount of lubricating oil per shot to the lubricating oil supply pipe in the open state is adjusted. be able to. Therefore, the supply amount of the lubricating oil to each bearing 1 can be finely adjusted as necessary, and the versatility is high.

［実施例２］
次に、潤滑油供給装置の第２実施例について、図３をもとに説明する。図３は、第２実施例の潤滑油供給装置の潤滑油供給部について示した説明図である。尚、第２実施例の潤滑油供給装置も、第１実施例の潤滑油供給装置同様、４つの軸受１を有する主軸装置へ潤滑油を供給するものとする。 [Example 2]
Next, a second embodiment of the lubricating oil supply device will be described with reference to FIG. FIG. 3 is an explanatory view showing a lubricating oil supply unit of the lubricating oil supply apparatus of the second embodiment. In addition, the lubricating oil supply apparatus of 2nd Example shall supply lubricating oil to the main shaft apparatus which has the four bearings 1 like the lubricating oil supply apparatus of 1st Example.

第２実施例の潤滑油供給装置は、潤滑油タンク４５と、０．０１ｍｌ／ショットの吐出能力を有する供給ポンプ４３と、供給ポンプ４３から吐出された潤滑油を軸受１等に供給するための５本の潤滑油供給管５１〜５５と、潤滑油を各潤滑油供給管５１〜５５へ分配するための分配器４１とを備えてなる。そして、分配器４１には、流量調整手段としての流量調整弁４７、４７・・が設けられており、該流量調整弁４７、４７・・により、潤滑油供給管５１〜５５へ送る潤滑油の流量を各潤滑油供給管５１〜５５毎に調整可能としている。また、５本の潤滑油供給管のうち、潤滑油供給管５１〜５４（供給路）が主軸装置の４つの軸受１と接続されており、分配器４１を介して送られてきた潤滑油をノズル７の先端から噴出して各軸受１内へ供給する。一方、残りの潤滑油供給管５５は、潤滑油タンク４５へ導かれており、送られてきた潤滑油を潤滑油タンク４５内へ還元する。尚、第２実施例の潤滑油供給装置では、５本の潤滑油供給管５１〜５５の管路抵抗を同一とする必要はない。   The lubricating oil supply apparatus according to the second embodiment is configured to supply a lubricating oil tank 45, a supply pump 43 having a discharge capacity of 0.01 ml / shot, and a lubricating oil discharged from the supply pump 43 to the bearing 1 and the like. Five lubricating oil supply pipes 51 to 55 and a distributor 41 for distributing the lubricating oil to the respective lubricating oil supply pipes 51 to 55 are provided. The distributor 41 is provided with flow rate adjusting valves 47, 47,... As flow rate adjusting means. The flow rate adjusting valves 47, 47,. The flow rate can be adjusted for each of the lubricating oil supply pipes 51 to 55. Of the five lubricating oil supply pipes, the lubricating oil supply pipes 51 to 54 (supply paths) are connected to the four bearings 1 of the spindle device, and the lubricating oil sent via the distributor 41 is used. It is ejected from the tip of the nozzle 7 and supplied into each bearing 1. On the other hand, the remaining lubricating oil supply pipe 55 is led to the lubricating oil tank 45, and reduces the sent lubricating oil into the lubricating oil tank 45. In the lubricating oil supply device of the second embodiment, it is not necessary for the five lubricating oil supply pipes 51 to 55 to have the same pipe line resistance.

以上のように構成される第２実施例の潤滑油供給装置によれば、分配器４１の流量調整弁４７、４７・・により、供給ポンプ４３から送り出された潤滑油を各潤滑油供給管５１〜５５毎に流量をそれぞれ調整して分配した後、軸受１等へ供給可能としている。したがって、従来から一般に使用されている０．０１ｍｌ／ショットの吐出能力しかない供給ポンプ４３を採用したとしても、流量調整弁４７の調整によっては０．０００２ｍｌ／ショットといった微少量な潤滑油供給を実現することができ、構成の簡素化、装置の低コスト化を図ることができる。
また、第１実施例の潤滑油供給装置同様、供給ポンプ４３から送り出される潤滑油のうち、必要でない潤滑油を再び潤滑油タンク４５へ還元するため、潤滑油の消費量を最小限に抑えることができ、省エネ化を図ることができる。
加えて、流量調整弁４７、４７・・により、供給位置毎に潤滑油供給量を容易に調整することができるため、汎用性が極めて高い。 According to the lubricating oil supply device of the second embodiment configured as described above, the lubricating oil fed from the supply pump 43 by the flow rate adjusting valves 47, 47,. After the flow rate is adjusted and distributed for every ~ 55, it can be supplied to the bearing 1 or the like. Therefore, even if the supply pump 43 that has a discharge capacity of 0.01 ml / shot, which is generally used in the past, is adopted, a very small amount of lubricating oil supply of 0.0002 ml / shot can be realized by adjusting the flow rate adjustment valve 47. Therefore, the configuration can be simplified and the cost of the apparatus can be reduced.
Further, like the lubricating oil supply device of the first embodiment, unnecessary lubricating oil sent out from the supply pump 43 is reduced again to the lubricating oil tank 45, so that the consumption of lubricating oil is minimized. Can save energy.
In addition, since the lubricating oil supply amount can be easily adjusted for each supply position by the flow rate adjusting valves 47, 47,.

なお、本発明の液体供給装置に係る構成は、上記実施形態に記載の態様に何ら限定されるものではなく、液体供給部の構成、ノズルの数や位置、液体の供給位置に係る構成等について、本発明の趣旨を逸脱しない範囲で必要に応じて適宜変更可能である。   The configuration related to the liquid supply apparatus of the present invention is not limited to the mode described in the above embodiment, and the configuration related to the configuration of the liquid supply unit, the number and position of the nozzles, the configuration related to the liquid supply position, etc. The present invention can be appropriately changed as necessary without departing from the spirit of the present invention.

たとえば、第１実施例においては、開閉制御装置を、潤滑油供給管を４本毎に開閉するものとしているが、潤滑油供給管を１本毎に開閉可能に構成してもよいし、必要でなければ、開閉制御装置を設けずに潤滑油供給装置を構成することも可能である。尚、開閉制御装置は、手動による開閉操作により開閉制御されるようにしてもよいし、供給ポンプを制御する制御装置にて開閉制御されるようにしてもよい。   For example, in the first embodiment, the open / close control device is configured to open and close the lubricating oil supply pipes every four, but the lubricating oil supply pipes may be configured to be openable and closable every one, and are necessary. Otherwise, it is possible to configure the lubricating oil supply device without providing the opening / closing control device. The opening / closing control device may be controlled to open / close by a manual opening / closing operation, or may be controlled to open / close by a control device that controls the supply pump.

また、分配器に連結される潤滑油供給管の数も、上記実施形態に記載の５本や８本に何ら限定されることはなく、適宜変更可能であるし、供給位置の数に応じて当該供給位置へ導く（すなわち、潤滑油タンクへ還元しない）潤滑油供給管の数も変更することができる。さらに、供給ポンプの吐出能力も上記実施形態に記載のものに何ら限定されることはなく、種々のものを採用することができる。尚、本発明により、微少量供給を可能とした高価な供給ポンプを採用する必要はない。
さらにまた、上記実施形態では、所定時間毎に供給ポンプが吐出動作するように構成しているが、所定時間毎に吐出動作させるのではなく、供給位置に潤滑油供給の要否を判断するための検知手段を備え、当該検知手段から得られる検知信号にもとづいて潤滑油を供給する必要があると判断した場合（たとえば、温度センサや加速度センサ等を軸受近傍に備え、所定値以上の検出値が検知された場合）に、供給ポンプを吐出動作させるように構成してもよい。
加えて、本発明の液体供給装置は、上記実施形態に記載したような工作機械の主軸装置の軸受へ潤滑油を供給するものに限定されることはなく、生化学自動分析装置に用いられる試薬ディスペンサー／ダイリューター（この場合、試薬が供給される液体となる）等であってもよい。 Further, the number of lubricating oil supply pipes connected to the distributor is not limited to five or eight described in the above embodiment, and can be changed as appropriate, and can be changed according to the number of supply positions. The number of lubricating oil supply pipes leading to the supply position (ie not returning to the lubricating oil tank) can also be changed. Furthermore, the discharge capacity of the supply pump is not limited to that described in the above embodiment, and various types can be adopted. According to the present invention, it is not necessary to employ an expensive supply pump that can supply a minute amount.
Furthermore, in the above-described embodiment, the supply pump is configured to perform the discharge operation every predetermined time. However, instead of performing the discharge operation every predetermined time, in order to determine whether or not it is necessary to supply the lubricant to the supply position. If it is determined that it is necessary to supply lubricating oil based on a detection signal obtained from the detection means (for example, a temperature sensor, an acceleration sensor, etc. are provided in the vicinity of the bearing, and a detection value equal to or greater than a predetermined value) The supply pump may be configured to perform a discharge operation when the above is detected.
In addition, the liquid supply device of the present invention is not limited to the one that supplies lubricating oil to the bearings of the spindle device of the machine tool as described in the above embodiment, but the reagent used in the biochemical automatic analyzer A dispenser / diluter (in this case, a liquid to which a reagent is supplied) may be used.

主軸装置に備えられた潤滑油の供給対象となる転がり軸受の軸方向への縦断面説明図である。It is a longitudinal cross-sectional explanatory view to the axial direction of the rolling bearing used as the supply object of the lubricating oil with which the main axis | shaft apparatus was equipped. 第１実施例の潤滑油供給装置の潤滑油供給部について示した説明図である。It is explanatory drawing shown about the lubricating oil supply part of the lubricating oil supply apparatus of 1st Example. 第２実施例の潤滑油供給装置の潤滑油供給部について示した説明図である。It is explanatory drawing shown about the lubricating oil supply part of the lubricating oil supply apparatus of 2nd Example.

符号の説明Explanation of symbols

１・・軸受、２・・内輪、３・・ボール、４・・保持器、５・・外輪、７・・ノズル、８・・主軸、９・・ハウジング、２１、４１・・分配器、２５、４３・・供給ポンプ、２６・・開閉制御装置、２７、４５・・潤滑油タンク、２８・・送油路、３１〜３８、５１〜５５・・潤滑油供給管、４７・・流量調整弁。   1 .... Bearing 2 .... Inner ring 3 .... Ball 4 .... Cage 5 ... Outer ring 7 ... Nozzle 8 ... Spindle 9 ... Housing 21, 21 ... Distributor 25 , 43 .. Supply pump, 26 .. Opening / closing control device, 27, 45 .. Lubricating oil tank, 28 .. Oil supply passage, 31-38, 51-55 .. Lubricating oil supply pipe, 47. .

Claims (4)

供給ポンプから吐出された液体を所定の供給位置へ供給路を介して供給する液体供給装置であって、
前記供給路を、同じ管路抵抗を有する複数の供給管のうちの少なくとも１つとするとともに、前記供給ポンプと前記複数の供給管との間に液体を分配するための分配器を介在させ、
前記分配器により、前記供給ポンプが吐出した液体を各供給管へ均等に分配し、前記供給路を介して、供給ポンプが吐出した液体より少量となる分配された液体を前記所定の供給位置へ供給することを特徴とする液体供給装置。 A liquid supply apparatus for supplying liquid discharged from a supply pump to a predetermined supply position via a supply path,
The supply path is at least one of a plurality of supply pipes having the same line resistance, and a distributor for distributing liquid between the supply pump and the plurality of supply pipes is interposed,
The distributor equally distributes the liquid discharged from the supply pump to each supply pipe, and distributes the distributed liquid, which is smaller than the liquid discharged from the supply pump, to the predetermined supply position via the supply path. A liquid supply apparatus, characterized by being supplied. 供給位置へ導かれない供給管を、供給ポンプへ液体を供給する液体タンクへ連結し、当該供給管内へ分配された液体を前記液体タンクへ還元することを特徴とする請求項１に記載の液体供給装置。   2. The liquid according to claim 1, wherein a supply pipe that is not led to a supply position is connected to a liquid tank that supplies liquid to a supply pump, and the liquid distributed in the supply pipe is reduced to the liquid tank. Feeding device. 分配器に、各供給管の開閉操作を行う開閉手段を設け、開状態とする供給管の数を変更することにより、開状態にある各供給管へ分配される液体量を調整可能としたことを特徴とする請求項１又は２に記載の液体供給装置。   The distributor is provided with open / close means for opening and closing each supply pipe, and the amount of liquid distributed to each open supply pipe can be adjusted by changing the number of open supply pipes. The liquid supply apparatus according to claim 1, wherein: 供給ポンプから吐出された液体を所定の供給位置へ供給路を介して供給する液体供給装置であって、
前記供給路を、複数の供給管のうちの少なくとも１つとするとともに、前記供給ポンプと前記複数の供給管との間に液体を分配するための分配器を介在させ、該分配器に、各前記供給管へ送る液体の流量を夫々調整するための流量調整手段を設け、
前記分配器において、前記供給ポンプが吐出した液体を各供給管毎に流量を調整した後に分配し、前記供給路を介して、供給ポンプが吐出した液体より少量となる分配された液体を前記所定の供給位置へ供給する一方、供給位置へ導かれない供給管を、供給ポンプへ液体を供給する液体タンクへ連結し、当該供給管内へ分配された液体を前記液体タンクへ還元することを特徴とする液体供給装置。 A liquid supply apparatus for supplying liquid discharged from a supply pump to a predetermined supply position via a supply path,
The supply path is at least one of a plurality of supply pipes, and a distributor for distributing a liquid is interposed between the supply pump and the plurality of supply pipes. A flow rate adjusting means for adjusting the flow rate of the liquid sent to the supply pipe is provided,
In the distributor, the liquid discharged from the supply pump is distributed after the flow rate is adjusted for each supply pipe, and the distributed liquid that is smaller than the liquid discharged from the supply pump is supplied to the predetermined liquid via the supply path. The supply pipe that is not led to the supply position is connected to a liquid tank that supplies liquid to the supply pump, and the liquid distributed in the supply pipe is reduced to the liquid tank. Liquid supply device.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102990469A (en) * 2012-11-19 2013-03-27 无锡市京锡冶金液压机电有限公司 Method for setting lubricating oil supply device of lubrication station
CN103722448A (en) * 2013-11-26 2014-04-16 无锡京华重工装备制造有限公司 Workbench guide rail lubricating system of vertical lathe

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WO2005092565A1 (en) * 2004-03-22 2005-10-06 Paul Müller Gmbh & Co. Kg Unternehmens- Beteiligungen Spindle for a machine-tool comprising a bearing element provided with a capillary feeding line for supplying lubricants

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005092565A1 (en) * 2004-03-22 2005-10-06 Paul Müller Gmbh & Co. Kg Unternehmens- Beteiligungen Spindle for a machine-tool comprising a bearing element provided with a capillary feeding line for supplying lubricants
JP2007529334A (en) * 2004-03-22 2007-10-25 パウル ミュラー ゲーエムベーハー ウント コンパニー カーゲー ウンターネーメンスベタイリグンゲン Machine tool spindle having a bearing element with a capillary supply tube for supplying lubricant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102990469A (en) * 2012-11-19 2013-03-27 无锡市京锡冶金液压机电有限公司 Method for setting lubricating oil supply device of lubrication station
CN103722448A (en) * 2013-11-26 2014-04-16 无锡京华重工装备制造有限公司 Workbench guide rail lubricating system of vertical lathe

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