KR20130130489A - Coolant supply device of machine tools for automatic coolant supplement - Google Patents

Coolant supply device of machine tools for automatic coolant supplement Download PDF

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Publication number
KR20130130489A
KR20130130489A KR1020120054342A KR20120054342A KR20130130489A KR 20130130489 A KR20130130489 A KR 20130130489A KR 1020120054342 A KR1020120054342 A KR 1020120054342A KR 20120054342 A KR20120054342 A KR 20120054342A KR 20130130489 A KR20130130489 A KR 20130130489A
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cutting oil
cutting
storage tank
supply
coolant
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KR1020120054342A
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Korean (ko)
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오진모
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오진모
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10Arrangements for cooling or lubricating tools or work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08Protective coverings for parts of machine tools; Splash guards
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08Protective coverings for parts of machine tools; Splash guards
    • B23Q11/0858Protective coverings for parts of machine tools; Splash guards using a liquid bath or a liquid curtain
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means

Abstract

The present invention provides a cutting oil supply apparatus capable of automatic supplementation of cutting oil in machine tools that automatically supplies supplementation of cutting oil evaporated and lost using a dual storage tank and prevents splattering of the cutting oil by forming an air curtain film around the injected cutting oil. According to an appropriate embodiment of the present invention, a cutting oil supply apparatus is provided to supply cutting oil to a cutting tool mounted on a spindle through a cutting oil injection nozzle, and is characterized by comprising; a cutting oil separation barrel to recover supplied cutting oil; and a circulation pump connected to the cutting oil separation barrel; and a cutting oil storage tank connected between the circulation pump and the cutting oil injection nozzle; and a supplementary cutting oil tank positioned in the upper part of the cutting oil storage tank to additionally supply insufficient cutting oil according to an oil level height of the cutting oil storage tank; and an electronic valve to open and close an outlet of the supplementary cutting oil tank; and a controller to control actions of the electronic valve.

Description

공작기계의 절삭유 자동 보충이 가능한 절삭유 공급장치{Coolant supply device of machine tools for automatic coolant supplement}Coolant supply device for automatic coolant supplement for machine tools {Coolant supply device of machine tools for automatic coolant supplement}

본 발명은 공작기계의 절삭유 공급장치에 관한 것으로, 특히 2중 저장탱크를 이용하여 절삭유의 보충을 자동으로 공급하고, 분사되는 절삭유의 둘레로 에어커튼막을 형성하여 절삭유의 튐 방지가 가능하도록 한 공작기계의 절삭유 자동 보충이 가능한 절삭유 공급장치에 관한 것이다.The present invention relates to a cutting oil supply device for a machine tool, and in particular, to automatically supply cutting oil by using a double storage tank, and to form an air curtain film around the cutting oil to be sprayed to prevent cutting oil. The present invention relates to a coolant supply device capable of automatically refilling coolant in a machine.

CNC 공작기계의 스핀들은 고속회전(1분당 7,000RPM 이상)하므로 공구와 공작물에 엄청난 마찰열이 발생한다. 마찰열을 없애고 절삭을 부드럽게 하기 위하여 절삭유를 살포하여 준다. 하지만 절삭과정에서 절삭잔해물이 절삭유의 순환사이클을 방해하고 가공시 증발 또는 손실로 절삭시 제때 절삭유를 공급하여 주지 못할 때 큰 문제가 발생된다.Spindles on CNC machine tools rotate at high speeds (above 7,000 RPM per minute), which generates enormous frictional heat on the tool and workpiece. Spray coolant to remove friction heat and smooth cutting. However, a large problem occurs when the cutting debris interrupts the circulation cycle of the cutting oil and fails to supply the cutting oil in time due to evaporation or loss during processing.

이같이 절삭유 공급에 문제가 발생되면, 과열로 인한 공구 및 공작물의 손상은 물론 스핀들의 과열로 기계의 화재 발생이 일어나게 된다. 따라서 절삭유의 유실과 절삭 잔해물에 의한 순환문제가 발생되어 절삭유 저장탱크에 절삭유가 부족할 경우 이에 대한 보충이 요구된다.If a problem occurs in the coolant supply, a fire of the machine may occur due to overheating of the spindle as well as damage to the tool and the workpiece due to overheating. Therefore, if the cutting oil is insufficient in the cutting oil storage tank due to the circulation problem caused by the loss of cutting oil and cutting debris is required.

또한 절삭유가 공구에 접촉하는 순간 공구의 회전 원심력에 의해 절삭유의 튐이 발생되어 절삭유의 유실과 자연적인 증발을 촉진하게 되므로 이에 대한 대책이 요구되는 실정이다.In addition, the coolant is generated by the rotational centrifugal force of the tool when the cutting oil contacts the tool, thereby promoting the loss of the cutting oil and natural evaporation.

본 발명의 배경이 되는 기술로는 한국 등록특허 등록번호 제10-1051795호로서, 절삭유 자동 희석 및 공급장치가 제시되어 있다. 이는 절삭유와 용수를 자동으로 혼합하여 절삭유가 희석된 혼합유를 자동으로 혼합유저장탱크로 공급하기 위한 절삭유 자동 희석 및 공급장치를 구성하되, 이는 절삭유와 용수를 정해진 비율로 혼합하기 위한 절삭유혼합탱크와, 상기 절삭유혼합탱크로 절삭유를 정량씩 펌핑하기 위한 절삭유펌핑수단과, 상기 용수를 절삭유혼합탱크로 정량씩 공급하기 위한 용수공급제어수단과, 상기 절삭유와 용수가 절삭유혼합탱크에서 혼합된 혼합유가 만수위가 되면 이를 혼합유저장탱크로 공기압에 의해 공급을 제어하기 위한 혼합유공급제어수단(6)과, 상기 절삭유혼합탱크 내부에 설치되어 절삭유 공급 수위 및 혼합유 최저수위, 혼합유의 만수위를 각각 감지할 수 있는 감지수단이 설치된 것을 특징으로 한다.As a background technology of the present invention, Korean Patent Registration No. 10-1051795 discloses an automatic cutting oil dilution and supply device. It consists of an automatic cutting oil dilution and supply device for automatically mixing cutting oil and water to supply the mixed oil diluted with the cutting oil to the mixed oil storage tank, which is a cutting oil mixing tank for mixing the cutting oil and water at a predetermined ratio. And cutting oil pumping means for pumping cutting oil into the cutting oil mixing tank quantitatively, water supply control means for supplying the water to the cutting oil mixing tank quantitatively, and the mixed oil mixed with the cutting oil and the water in the cutting oil mixing tank When the high water level is reached, the mixed oil supply control means 6 for controlling the supply by air pressure to the mixed oil storage tank, and installed inside the cutting oil mixing tank to detect the cutting oil supply level, the lowest level of the mixed oil, and the full level of the mixed oil, respectively. Characterized in that the sensing means is installed.

그러나 상기 배경기술에서는 절삭유의 증발이나 손실이 발생할 경우 이를 보충할 대안이 없다. 또한 공구에 접촉될 시 절삭유의 튐 방지에 대한 제시가 되어 있지 않다.However, in the background, there is no alternative to compensate for the evaporation or loss of cutting oil. In addition, there is no suggestion of splashing of coolant when it comes into contact with the tool.

한국 공개특허 공개번호 특2001-0052402호Korean Laid-Open Patent Publication No. 2001-0052402 한국 공개특허 공개번호 제10-2012-0049489호Korean Laid-Open Patent Publication No. 10-2012-0049489

본 발명은 2중 저장탱크를 이용하여 증발 및 손실된 유절삭유의 보충을 자동으로 공급하고, 분사되는 절삭유의 둘레로 에어커튼막을 형성하여 절삭유의 튐 방지가 가능하도록 한 공작기계의 절삭유 자동 보충이 가능한 절삭유 공급장치를 제공함에 그 목적이 있다.The present invention automatically supplies replenishment of oil coolant lost and evaporated by using a dual storage tank, and automatically replenishes cutting oil of a machine tool to prevent cutting oil by forming an air curtain film around the injected cutting oil. The object is to provide a possible coolant supply.

본 발명의 적절한 실시 형태에 따르면,According to a preferred embodiment of the present invention,

절삭유 분사노즐을 통해 스핀들에 장착된 절삭공구로 절삭유를 공급시켜 주기 위한 절삭유 공급장치에 있어서,In the coolant supply device for supplying the coolant to the cutting tool mounted on the spindle through the coolant injection nozzle,

공급된 절삭유를 회수하는 절삭유 분리통과;A cutting oil separation passage for recovering the supplied cutting oil;

상기 절삭유 분리통에 연결되어 있는 순환펌프와;A circulation pump connected to the cutting oil separator;

상기 순환펌프와 상기 절삭유 분사노즐의 사이에 연결되어 있는 절삭유 저장탱크와;A cutting oil storage tank connected between the circulation pump and the cutting oil injection nozzle;

상기 절삭유 저장탱크의 상부에 위치하여 상기 절삭유 저장탱크의 유면 높낮이에 따라 부족한 절삭유를 추가로 공급시켜 주는 절삭유 보조탱크와;A cutting oil auxiliary tank positioned at an upper portion of the cutting oil storage tank and additionally supplying a cutting oil that is insufficient depending on a height of a surface of the cutting oil storage tank;

상기 절삭유 보조탱크의 출구를 개폐하는 전자밸브; 및An solenoid valve for opening and closing an outlet of the cutting oil auxiliary tank; And

상기 전자밸브의 동작을 제어하는 컨트롤러를 포함하는 것을 특징으로 한다.It characterized in that it comprises a controller for controlling the operation of the solenoid valve.

또한, 상기 컨트롤러는 상기 전자밸브의 개폐 동작을 제어하기 위해 상기 절삭유 저장탱크의 유면 높낮이를 검출하는 저장탱크 센서와 연결되어 있는 것을 특징으로 한다.In addition, the controller is connected to the storage tank sensor for detecting the oil level of the cutting oil storage tank to control the opening and closing operation of the solenoid valve.

또한, 상기 절삭유 보조탱크의 레벨 보조탱크 센서에서 검출된 신호가 보충 신호로 판단되면 경보음이 발생되도록 상기 컨트롤러에 경고스피커가 연결되어 있는 것을 특징으로 한다.In addition, if the signal detected by the level auxiliary tank sensor of the cutting oil auxiliary tank is determined to be a supplementary signal, characterized in that the warning speaker is connected to the controller so that an alarm sound is generated.

또한, 상기 절삭유 보조탱크는 저장된 절삭유의 잔량을 시각적으로 확인하기 용이하도록 투명한 합성수지재로 제작된 것을 특징으로 한다.In addition, the cutting oil auxiliary tank is characterized in that it is made of a transparent synthetic resin material so that it is easy to visually check the remaining amount of the stored cutting oil.

또한, 상기 절삭유 분사노즐은 중앙에 형성된 절삭유 분사공과 절삭유 분사공의 둘레로 다수의 에어커튼홀을 갖는 노즐 몸체와, 상기 분사공과 연통된 에어챔버를 갖고 노즐 몸체에 결합되어 있는 에어하우징으로 구성되고;In addition, the cutting oil injection nozzle is composed of a nozzle body having a plurality of air curtain holes around the cutting oil injection hole and the cutting oil injection hole formed in the center, and an air housing having an air chamber in communication with the injection hole is coupled to the nozzle body ;

상기 에어챔버에 압축공기를 공급하는 공기압축기와;An air compressor for supplying compressed air to the air chamber;

상기 에어챔버로 공급되는 압축공기의 량을 제어하는 에어밸브를 더 포함한 것을 특징으로 한다.It further comprises an air valve for controlling the amount of compressed air supplied to the air chamber.

본 발명에 따른 공작기계의 절삭유 자동 보충이 가능한 절삭유 공급장치는, 절삭유 저장탱크에서 절삭유의 보충이 감지되면 보조탱크내에 저장된 절삭유의 급유가 자동적으로 이루어져 증발 및 손실된 절삭유가 보충되어 공구 및 공작물의 손상 방지는 물론이고 스핀들의 과열 발생을 방지할 수 있다.Cutting oil supply device capable of automatically refilling the cutting oil of the machine tool according to the present invention, when the replenishment of the cutting oil is detected in the cutting oil storage tank is automatically refueling of the cutting oil stored in the auxiliary tank to make up the evaporated and lost cutting oil to supplement the tool and the workpiece In addition to preventing damage, overheating of the spindle can be prevented.

또한, 에어커튼막에 의해 절삭유의 튐 방지가 가능하여 절삭유의 손실을 최소한으로 줄일 수 있다.
In addition, the cutting of the coolant can be prevented by the air curtain film, so that the loss of the coolant can be reduced to a minimum.

본 명세서에서 첨부되는 다음의 도면들은 본 발명의 바람직한 실시 예를 예시하는 것이며, 발명의 상세한 설명과 함께 본 발명의 기술사상을 더욱 이해시키는 역할을 하는 것이므로, 본 발명은 첨부한 도면에 기재된 사항에만 한정되어서 해석되어서는 아니 된다.
도 1은 본 발명에 따른 공작기계의 절삭유 자동 보충이 가능한 절삭유 공급장치의 개념도.
도 2는 본 발명에 적용되는 절삭유 분사노즐의 단면도.
도 3은 도 2의 일측면도.
도 4는 본 발명에 따른 공작기계의 절삭유 자동 보충이 가능한 절삭유 공급장치의 제어흐름도.
The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a conceptual diagram of a cutting oil supply device capable of automatically replenishing cutting oil of a machine tool according to the present invention.
Figure 2 is a cross-sectional view of the cutting oil jet nozzle applied to the present invention.
3 is a side view of FIG. 2;
Figure 4 is a control flow diagram of the coolant supply apparatus capable of automatically replenishing the cutting oil of the machine tool according to the present invention.

아래에서 본 발명은 첨부된 도면에 제시된 실시 예를 참조하여 상세하게 설명이 되지만 제시된 실시 예는 본 발명의 명확한 이해를 위한 예시적인 것으로 본 발명은 이에 제한되지 않는다. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

도 1에서와 같이 절삭유 분사노즐(14)을 통해 스핀들(10)에 장착된 절삭공구(12)로 절삭유를 공급시켜 주기 위한 절삭유 공급장치는 공급된 절삭유를 회수하는 절삭유 분리통(16)이 구비된다. 절삭유 분리통(16)은 공작물(1)을 이송시키는 이송테이블(2)의 일측에 배치되어 있다. 절삭유 분리통(16)은 주지의 스크레이퍼, 여과필터 등이 구비되어 있어 공작물 절삭시 유입된 칩과 절삭유를 분리시킨다. As shown in FIG. 1, a cutting oil supply device for supplying cutting oil to a cutting tool 12 mounted on the spindle 10 through a cutting oil injection nozzle 14 includes a cutting oil separation cylinder 16 for recovering the supplied cutting oil. do. The cutting oil separator 16 is disposed on one side of the transfer table 2 for transferring the work 1. The cutting oil separator 16 is provided with a known scraper, a filtration filter, and the like to separate chips and cutting oil introduced during cutting of the workpiece.

절삭유 분리통(16)에서 분리된 절삭유는 절삭유 분리통(16)에 배관을 통해 연결되어 있는 순환펌프(18)를 통해 절삭유 저장탱크(20)로 공급되게 되어 있다. 절삭유 보조탱크(22)는 순환펌프(18)와 절삭유 분사노즐(14)의 사이에 배관을 통해 연결되어 있다. 절삭유 저장탱크(20)는 바람직하게는 절삭유 분사노즐(14)의 출구측보다 상부에 위치된다.The cutting oil separated from the cutting oil separator 16 is supplied to the cutting oil storage tank 20 through a circulation pump 18 connected to the cutting oil separator 16 via a pipe. The coolant auxiliary tank 22 is connected between the circulation pump 18 and the coolant injection nozzle 14 via a pipe. The coolant storage tank 20 is preferably located above the outlet side of the coolant injection nozzle 14.

절삭유 저장탱크(20)에는 절삭유 보조탱크(22)가 연결되어 있다. 바람직하게 절삭유 보조탱크(22)의 출구는 절삭유 저장탱크(20)내의 유면보다 상부에 위치한다. 절삭유 저장탱크(20)는 절삭유 저장탱크(20)의 유면 높낮이에 따라 증발 또는 소실되어 부족한 절삭유를 절삭유 저장탱크(20)로 추가로 공급시켜 주는 역할을 한다. 절삭유 보조탱크(22)는 저장된 절삭유의 잔량을 시각적으로 확인하기 용이하도록 투명한 재질이 바람직하다. 절삭유 보조탱크(22)는 더욱 바람직하게는 파손의 염려가 적은 아크릴 등의 합성수지재로 제작됨이 바람직하다.The cutting oil auxiliary tank 22 is connected to the cutting oil storage tank 20. Preferably the outlet of the coolant auxiliary tank 22 is located above the oil level in the coolant storage tank 20. The cutting oil storage tank 20 serves to additionally supply the cutting oil that is insufficient due to evaporation or disappearance according to the oil level of the cutting oil storage tank 20 to the cutting oil storage tank 20. The cutting oil auxiliary tank 22 is preferably made of a transparent material so that it is easy to visually check the remaining amount of the stored cutting oil. The cutting oil auxiliary tank 22 is more preferably made of synthetic resin such as acrylic, which is less likely to be damaged.

절삭유 보조탱크(22)의 출구에는 전기적으로 개폐 동작하는 전자밸브(24)가 설치되어 있다. 전자밸브(24)는 그의 동작을 제어하는 컨트롤러(30)에 전기적으로 연결되어 있다.The solenoid valve 24 which electrically opens and closes is provided in the exit of the cutting oil auxiliary tank 22. As shown in FIG. The solenoid valve 24 is electrically connected to the controller 30 which controls its operation.

컨트롤러(30)는 전자밸브(24)의 개폐 동작을 제어하기 위해 절삭유 저장탱크(20)의 유면 높낮이를 검출하는 저장탱크 센서(32)와 연결되어 있다. 여기서 저장탱크 센서(32)는 주지의 레벨 센서, 근적외선센서, 부구를 이용한 센서 등등이 될 수 있다.The controller 30 is connected to the storage tank sensor 32 for detecting the oil level of the cutting oil storage tank 20 to control the opening and closing operation of the solenoid valve 24. Here, the storage tank sensor 32 may be a known level sensor, a near infrared sensor, a sensor using a float, or the like.

또한 절삭유 보조탱크(22)의 보조탱크 센서(23)에서 검출된 신호가 보충 신호로 판단되면 경보음이 발생되도록 상기 컨트롤러(30)에 경고스피커(34)가 연결되어 있다. 이때 경고스피커(34)는 메모리에 저장된 음성의 경고 메세지를 출력할 수 있다.In addition, when the signal detected by the auxiliary tank sensor 23 of the cutting oil auxiliary tank 22 is determined as a supplementary signal, a warning speaker 34 is connected to the controller 30 to generate an alarm sound. At this time, the warning speaker 34 may output a warning message of the voice stored in the memory.

한편, 본 발명은 절삭유 분사노즐(14)에서 공급되는 절삭유가 공구에 접촉한 후 에어커튼에 의해 튐을 방지하는 수단이 더 포함된다.On the other hand, the present invention further includes means for preventing splashing by the air curtain after the cutting oil supplied from the cutting oil injection nozzle 14 contacts the tool.

즉, 도 2 및 도 3에서와 같이 절삭유 분사노즐(14)은 중앙에 형성된 절삭유 분사공(141a)과 절삭유 분사공(141a)의 둘레로 다수의 에어커튼홀(141b)을 갖는 노즐 몸체(141)와, 상기 분사공(141a)과 연통된 에어챔버(142a)를 갖고 노즐 몸체(141)에 결합되어 있는 에어하우징(142)으로 구성되고, 에어챔버(142a)에는 압축공기를 공급하는 공기압축기(143)가 연결되고, 에어챔버(142a)로 공급되는 압축공기의 량을 제어하는 에어밸브(144)를 더 포함하여 구성된다.That is, as shown in FIGS. 2 and 3, the cutting oil injection nozzle 14 has a nozzle body 141 having a plurality of air curtain holes 141b around the cutting oil injection hole 141a and the cutting oil injection hole 141a formed at the center thereof. ), And an air chamber 142 having an air chamber 142a in communication with the injection hole 141a and coupled to the nozzle body 141, and an air compressor for supplying compressed air to the air chamber 142a. 143 is connected, and further comprises an air valve 144 for controlling the amount of compressed air supplied to the air chamber (142a).

다수의 에어커튼홀(141b)은 도 3과 같이 분사공(141a)의 중심에서 동일 반경에 배치된다. 에어커튼홀(141b)은 원형으로 구성할 수도 있으나 바람직하게는 장공 형태가 좋다.The plurality of air curtain holes 141b are disposed at the same radius in the center of the injection hole 141a as shown in FIG. 3. The air curtain hole 141b may be configured in a circular shape but preferably has a long hole shape.

이와 같이 구성된 본 실시 예의 작용을 도 4를 참조하여 설명한다.The operation of this embodiment configured as described above will be described with reference to FIG.

먼저, 순환펌프(18)의 구동(S10)으로 절삭유 분리통(16)에 저장된 절삭유는 절삭유 저장탱크(20)내로 공급된다. 절삭유 저장탱크(20)내로 유입된 절삭유는 위치에너지에 의해 분사노즐(14)로 공급되어 절삭공구(12)로 분사 살포된다.First, the cutting oil stored in the cutting oil separation tank 16 is driven into the cutting oil storage tank 20 by the driving S10 of the circulation pump 18. The cutting oil introduced into the cutting oil storage tank 20 is supplied to the injection nozzle 14 by potential energy and sprayed to the cutting tool 12.

이와 같이 절삭유는 절삭유 분리통(16), 순환펌프(18), 절삭유 저장탱크(20) 및 분사노즐(14)을 순환하면서 자연적인 증발과 유실이 일어난다.As such, the coolant circulates through the coolant separator 16, the circulation pump 18, the coolant storage tank 20, and the injection nozzles 14, thereby causing natural evaporation and loss.

따라서 절삭유 저장탱크(20)내의 유면 높이는 점차로 낮아지고, 이를 저장탱크 센서(32)가 측정 감지(S11)하게 된다. 저장탱크 센서(32)에서 감지된 신호는 컨트롤러(30)에서 보충 여부를 판단(S12)하게 된다.Therefore, the oil level in the cutting oil storage tank 20 is gradually lowered, and the storage tank sensor 32 measures and detects (S11) it. The signal detected by the storage tank sensor 32 is determined by the controller 30 (S12).

절삭유 저장탱크(20)내의 유면 높이가 보충이 필요한 정도로 낮아지면 저장탱크 센서(32)를 통해 컨트롤러(30)는 보충을 확인하여 전자밸브(24)를 개방(S13)시키게 된다.When the oil level in the cutting oil storage tank 20 becomes low enough to be replenished, the controller 30 checks the replenishment through the storage tank sensor 32 to open the solenoid valve 24 (S13).

따라서 절삭유 보조탱크(22)에 저장되어 있는 보충 절삭유는 열려진 전자밸브(24)를 통해 절삭유 보조탱크(22)로 공급 보충(S14)된다. 절삭유 보조탱크(22)에 필요한 절삭유의 보충으로 유면이 상승하면 저장탱크 센서(32)의 감지를 통해 컨크롤러(30)에 의해 전자밸브(24)는 다시 닫힌다.Therefore, the replenishment cutting oil stored in the cutting oil auxiliary tank 22 is supplied to the cutting oil auxiliary tank 22 via the open solenoid valve 24 (S14). When the oil level rises by replenishing the cutting oil required for the cutting oil auxiliary tank 22, the solenoid valve 24 is closed again by the controller 30 through the detection of the storage tank sensor 32.

이와 같이 하여 가공시 증발 또는 손실로 절삭시 필요한 절삭유를 제때에 공급하여 주게 되므로 공구의 과열 및 공작물의 손상을 방지할 수 있다.In this way, it is possible to prevent the overheating of the tool and the damage of the workpiece because the cutting oil required for cutting is evaporated or lost during processing.

한편, 절삭유 보조탱크(22)의 유면이 가장 낮아지게 되면 보조탱크 센서(23)에서 이를 감지하고 컨트롤러(30)가 보충을 판단(S16)하여 경고스피커(34)를 통해 경보음이 발생(S17)된다. 경보음은 "절삭유의 보충이 필요합니다"라는 메세지가 출력되거나 작업자에게 인식될 수 있는 다양한 형태의 "경고음"이 울리는 것을 의미한다. 따라서 작업자는 가공을 즉시 정지(S18)시키고 절삭유를 보충하여 이를 해소시킴으로써 만일의 기계적 화재 발생을 방지할 수 있다.On the other hand, when the oil level of the cutting oil auxiliary tank 22 is the lowest, the auxiliary tank sensor 23 detects this and the controller 30 determines the replenishment (S16) to generate an alarm sound through the warning speaker 34 (S17). )do. The alarm sound means that the message "Needs coolant needs to be filled" or various types of "beep" sounds that can be recognized by the operator. Therefore, the operator can immediately stop the machining (S18) and replenish the cutting oil to eliminate it by any chance to prevent the occurrence of mechanical fire.

또한 작업자는 수시로 절삭유 보조탱크(22)내의 잔량을 시각적으로 확인할 수 있어 필요시 수시로 절삭유를 보충할 수 있어 공구와 공작물의 손상을 미연에 방지할 수 있다.In addition, the operator can visually check the remaining amount in the coolant auxiliary tank 22 from time to time to replenish the coolant at any time, thereby preventing damage to the tool and the workpiece.

한편, 절삭유 분사노즐(14)에서는 절삭유 분사공(141a)을 통해 절삭유가 공구측으로 분사된다. 이때 공기압축기(143)에서 압축된 공기는 에어밸브(144)를 경유하여 다수의 에어커튼홀(141b)을 통과하여 고압으로 분사된다. 이때 에어커튼홀(141b)로 분사되는 공기는 절삭유의 둘레를 감싸고 분사되므로 긴 원통형의 에어커튼막을 형성하게 된다. 따라서 공구측에 충돌된 절삭유는 에어커튼홀(141b)을 통과한 에어커튼막에 의해 포획되어 튐 현상이 줄어들게 된다. 따라서 절삭유의 손실을 튐 방지만큼 줄일 수 있다.On the other hand, in the cutting oil injection nozzle 14, the cutting oil is injected to the tool side through the cutting oil injection hole (141a). At this time, the air compressed by the air compressor 143 is injected at a high pressure through the plurality of air curtain holes (141b) via the air valve 144. At this time, the air injected into the air curtain hole (141b) is wrapped around the cutting oil and injected to form a long cylindrical air curtain film. Therefore, the cutting oil collided on the tool side is captured by the air curtain film that has passed through the air curtain hole 141b, thereby reducing the crushing phenomenon. Therefore, the loss of coolant can be reduced as much as splash prevention.

한편, 가공프로그램이 종료(S19) 되면, 순환펌프(18)는 정지(S20)하고 절삭 작업은 종료된다.On the other hand, when the machining program ends (S19), the circulation pump 18 is stopped (S20) and the cutting operation is finished.

지금까지 본 발명은 제시된 실시 예를 참조하여 상세하게 설명이 되었지만 이 분야에서 통상의 지식을 가진 자는 제시된 실시 예를 참조하여 본 발명의 기술적 사상을 벗어나지 않는 범위에서 다양한 변형 및 수정 발명을 만들 수 있을 것이다. 본 발명은 이와 같은 변형 및 수정 발명에 의하여 제한되지 않으며 다만 아래에 첨부된 청구범위에 의하여 제한된다. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: 스핀들
14: 절삭유 분사노즐
16: 절삭유 분리통
18: 순환펌프
20: 절삭유 저장탱크
22: 절삭유 보조탱크
23: 보조탱크 센서
24: 전자밸브
30: 컨트롤러
32: 저장탱크 센서
34: 경고스피커
10: spindle
14: coolant spray nozzle
16: coolant separator
18: circulation pump
20: coolant storage tank
22: coolant auxiliary tank
23: auxiliary tank sensor
24: solenoid valve
30: Controller
32: storage tank sensor
34: Warning Speaker

Claims (5)

절삭유 분사노즐(14)을 통해 스핀들(10)에 장착된 절삭공구(12)로 절삭유를 공급시켜 주기 위한 절삭유 공급장치에 있어서,
공급된 절삭유를 회수하는 절삭유 분리통(16)과;
상기 절삭유 분리통(16)에 연결되어 있는 순환펌프(18)와;
상기 순환펌프(18)와 상기 절삭유 분사노즐(14)의 사이에 연결되어 있는 절삭유 저장탱크(20)와;
상기 절삭유 저장탱크(20)의 상부에 위치하여 상기 절삭유 저장탱크(20)의 유면 높낮이에 따라 부족한 절삭유를 추가로 공급시켜 주는 절삭유 보조탱크(22)와;
상기 절삭유 보조탱크(22)의 출구를 개폐하는 전자밸브(24); 및
상기 전자밸브(24)의 동작을 제어하는 컨트롤러(30)를 포함하는 것을 특징으로 하는 공작기계의 절삭유 자동 보충이 가능한 절삭유 공급장치.
In the cutting oil supply device for supplying the cutting oil to the cutting tool 12 mounted on the spindle 10 through the cutting oil injection nozzle 14,
A cutting oil separator (16) for recovering the supplied cutting oil;
A circulation pump (18) connected to the cutting oil separator (16);
A cutting oil storage tank 20 connected between the circulation pump 18 and the cutting oil injection nozzle 14;
A cutting oil auxiliary tank 22 which is positioned above the cutting oil storage tank 20 and additionally supplies the cutting oil that is insufficient according to the oil surface height of the cutting oil storage tank 20;
Solenoid valve 24 for opening and closing the outlet of the cutting oil auxiliary tank 22; And
Cutting oil supply device capable of automatically replenishing the cutting oil of the machine tool, characterized in that it comprises a controller (30) for controlling the operation of the solenoid valve (24).
제 1항에 있어서,
상기 컨트롤러(30)는 상기 전자밸브(24)의 개폐 동작을 제어하기 위해 상기 절삭유 저장탱크(20)의 유면 높낮이를 검출하는 저장탱크 센서(32)와 연결되어 있는 것을 특징으로 하는 공작기계의 절삭유 자동 보충이 가능한 절삭유 공급장치.
The method of claim 1,
The controller 30 is connected to a storage tank sensor 32 for detecting the oil level of the cutting oil storage tank 20 to control the opening and closing operation of the solenoid valve 24. Coolant supply with automatic refill.
제 1항에 있어서,
상기 절삭유 보조탱크(22)의 레벨 보조탱크 센서(23)에서 검출된 신호가 보충 신호로 판단되면 경보음이 발생되도록 상기 컨트롤러(30)에 경고스피커(34)가 연결되어 있는 것을 특징으로 하는 공작기계의 절삭유 자동 보충이 가능한 절삭유 공급장치.
The method of claim 1,
When the signal detected by the level auxiliary tank sensor 23 of the cutting oil auxiliary tank 22 is determined to be a supplementary signal, a warning speaker 34 is connected to the controller 30 to generate an alarm sound. Coolant supply to automatically refill coolant in the machine.
제 1항에 있어서,
상기 절삭유 보조탱크(22)는 저장된 절삭유의 잔량을 시각적으로 확인하기 용이하도록 투명한 합성수지재로 제작된 것을 특징으로 하는 공작기계의 절삭유 자동 보충이 가능한 절삭유 공급장치.
The method of claim 1,
The cutting oil auxiliary tank 22 is a cutting oil supply device capable of automatically replenishing cutting oil of a machine tool, which is made of a transparent synthetic resin material so as to make it easy to visually check the remaining amount of stored cutting oil.
제 1항에 있어서,
상기 절삭유 분사노즐(14)은 중앙에 형성된 절삭유 분사공(141a)과 절삭유 분사공(141a)의 둘레로 다수의 에어커튼홀(141b)을 갖는 노즐 몸체(141)와, 상기 분사공(141a)과 연통된 에어챔버(142a)를 갖고 노즐 몸체(141)에 결합되어 있는 에어하우징(142)으로 구성되고;
상기 에어챔버(142a)에 압축공기를 공급하는 공기압축기(143)와;
상기 에어챔버(142a)로 공급되는 압축공기의 량을 제어하는 에어밸브(144)를 더 포함한 것을 특징으로 하는 공작기계의 절삭유 자동 보충이 가능한 절삭유 공급장치.
The method of claim 1,
The cutting oil injection nozzle 14 has a nozzle body 141 having a plurality of air curtain holes 141b around the cutting oil injection hole 141a and the cutting oil injection hole 141a formed at the center, and the injection hole 141a. An air housing 142 having an air chamber 142a in communication with and connected to the nozzle body 141;
An air compressor (143) for supplying compressed air to the air chamber (142a);
Cutting oil supply device capable of automatically replenishing the cutting oil of the machine tool, characterized in that it further comprises an air valve (144) for controlling the amount of compressed air supplied to the air chamber (142a).
KR1020120054342A 2012-05-22 2012-05-22 Coolant supply device of machine tools for automatic coolant supplement KR20130130489A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110542085A (en) * 2019-08-28 2019-12-06 中国民用航空总局第二研究所 Fuel oil constant temperature and pressure control system of oil burner
US10610001B2 (en) 2017-06-13 2020-04-07 Jong-Chen KIM Mask device for facial skin care
KR102363243B1 (en) * 2020-09-08 2022-02-15 조영현 Tapping oil and cutting oil supply device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10610001B2 (en) 2017-06-13 2020-04-07 Jong-Chen KIM Mask device for facial skin care
CN110542085A (en) * 2019-08-28 2019-12-06 中国民用航空总局第二研究所 Fuel oil constant temperature and pressure control system of oil burner
KR102363243B1 (en) * 2020-09-08 2022-02-15 조영현 Tapping oil and cutting oil supply device

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