KR20070070364A - Apparatus for cnc automatic pressure control of spendle clamp and method thereof - Google Patents

Apparatus for cnc automatic pressure control of spendle clamp and method thereof Download PDF

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KR20070070364A
KR20070070364A KR1020050132847A KR20050132847A KR20070070364A KR 20070070364 A KR20070070364 A KR 20070070364A KR 1020050132847 A KR1020050132847 A KR 1020050132847A KR 20050132847 A KR20050132847 A KR 20050132847A KR 20070070364 A KR20070070364 A KR 20070070364A
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South Korea
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pressure
spindle
clamp
hydraulic
load amount
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KR1020050132847A
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Korean (ko)
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KR101235486B1 (en
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최상원
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두산인프라코어 주식회사
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Priority to KR1020050132847A priority Critical patent/KR101235486B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
    • B23Q17/0961—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining by measuring power, current or torque of a motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gripping On Spindles (AREA)
  • Numerical Control (AREA)

Abstract

An apparatus and a method for automatic control of spindle clamp pressure of a machine tool are provided to achieve improved accuracy in machining by checking the load amount of a spindle motor and automatically setting an optimum spindle clamp pressure in accordance with the load amount. An apparatus for automatic control of spindle clamp pressure of a machine tool includes a PLC controller(10), a clamping solenoid driving unit(20), an unclamping solenoid driving unit(40), and a set pressure checking unit(30). The PLC controller checks the load amount of a spindle motor, outputs a control signal for driving a hydraulic solenoid to maintain a spindle clamping hydraulic pressure in accordance with the load amount, and checks whether the spindle pressure corresponds with the proposed hydraulic pressure. The clamp solenoid driving unit drives a combination of a plurality of hydraulic solenoids in accordance with the control of the PLC controller, and delivers a hydraulic pressure to a brake. The unclamp solenoid driving unit releases the hydraulic pressure of the brake in accordance with the control of the PLC controller. The set pressure checking unit checks the applied hydraulic pressure and set pressure and transmits the result to the PLC controller.

Description

공작기계의 스핀들 클램프 압력자동 조정장치 및 방법{Apparatus for CNC Automatic Pressure Control of Spendle Clamp and Method Thereof}Apparatus for CNC Automatic Pressure Control of Spendle Clamp and Method Thereof}

도 1은 본 발명의 구성도.1 is a block diagram of the present invention.

도 2는 본 발명의 동작 순서도.2 is an operational flowchart of the present invention.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10: PLC 제어부10: PLC control unit

20: 클램프용 솔레노이드 구동부20: Solenoid drive for clamp

30: 설정압력 확인부30: Set pressure check unit

40: 언클램프용 솔레노이드 구동부40: solenoid drive unit for unclamping

본 발명은 공작기계의 스핀들 클램프 압력자동 조정장치 및 방법에 관한 것으로, 특히 스핀들 클램프 기능을 사용하여 주축이 회전하면서 소재의 단면을 가공하는 회전공구 장착 장비에서 가공 소재의 종류 및 절삭방법의 변경에 따른 스핀들 모터의 부하량을 체크하여 그 부하량에 맞는 스핀들의 클램프 압력을 자동으로 변 경하도록 하는 것을 특징으로 하는 공작기계의 스핀들 클램프 압력자동 조정장치 및 방법에 관한 것이다.The present invention relates to a device for automatically adjusting the spindle clamp pressure of a machine tool, and more particularly, to a change in the type and cutting method of a workpiece in a rotary tool mounting apparatus which processes a cross section of a material while the spindle rotates using a spindle clamp function. The present invention relates to an apparatus and method for automatically adjusting a spindle clamp pressure of a machine tool, wherein the spindle clamp pressure of the spindle motor is automatically changed according to the load of the spindle motor.

밀링기능이 부착된 장비에서는 매인 스핀들을 고정하는 브레이크 장치가 있어 이 브레이크 장치의 압력을 조절하여 가공을 하게 된다.In the machine equipped with the milling function, there is a brake device for fixing the main spindle.

가공의 절삭조건 또는 소재의 종류가 달라지면 스핀들에 걸리는 부하량도 달라지게 되어 매인 스핀들을 고정하는 브레이커 장치의 스핀들 압력도 변화시켜야 가공정도를 향상시킬 수 있다.If the cutting conditions of the machining or the type of material are changed, the load on the spindle will also be changed, so the spindle pressure of the breaker device that holds the main spindle must also be changed to improve the accuracy.

종래에는 이 압력을 설정시 소재를 여러차례 가공해 보고 그때마다 최적의 스핀들 클램프 압력을 설정하므로 최적의 가공조건을 찾기 위한 공작물의 초기 설정시간이 많이 걸리게 된다.Conventionally, when the pressure is set, the workpiece is processed several times, and the optimum spindle clamp pressure is set at each time, so it takes a lot of time for the initial setting of the workpiece to find the optimum machining conditions.

또한, 소재의 종류 및 가공 절삭조건이 변경될때마다 최적의 압력설정을 위한 테스트 작업을 수행해야 하는 불편함이 있다.In addition, there is an inconvenience in that a test operation for optimal pressure setting should be performed whenever the type of material and the cutting cutting conditions are changed.

본 발명은 종래의 문제를 개선코자 하는 것으로 NC 장치에서 가공을 할때 스핀들 모터의 부하량을 확인하여 그 부하량에 따른 최적의 스핀들 클램프 압력으로 자동설정하도록 하여 보다 정밀한 가공정도의 향상 효과를 볼 수 있고, 공작물의 재질 및 가공 절삭조건의 변동에 따른 스핀들 클램프 압력을 일일이 설정할 필요가 없으므로 가공시간을 단축할 수 있도록 하는 것이 목적이다.The present invention is to improve the conventional problem to check the load amount of the spindle motor when machining in the NC device to automatically set to the optimum spindle clamp pressure according to the load amount can see the effect of improving the precision precision Therefore, it is not necessary to set the spindle clamp pressure according to the variation of the material of the workpiece and the cutting conditions, so that the machining time can be shortened.

상기 목적을 달성하기 위한 수단으로,As a means for achieving the above object,

본 발명은 스핀들 모터의 부하량을 체크하여 그 부하량에 맞도록 스핀들 클램핑 유압을 유지하기 위해 유압 솔레노이드 구동을 위한 제어신호를 출력하고, 아울러 스핀들 압력을 체크하여 제시된 유압에 부합하는지를 체크하는 PLC 제어부와; 상기 PLC 제어부의 제어에 따라 다수개의 유압 솔레노이드를 선택적으로 조합하여 구동하여 브레이크 장치에 유압을 송출하는 클램프용 솔레노이드 구동부와; 상기 PLC 제어부의 제어에 따라 브레이크 장치의 유압을 해제하기 위한 언클램프용 솔레노이드 구동부와; 가해진 유압을 확인하고 설정압을 확인하여 이를 PLC 제어부로 전송하는 설정압력 확인부로 이루어지는 것이 특징이다.The present invention includes a PLC control unit for checking the load amount of the spindle motor and outputting a control signal for driving the hydraulic solenoid to maintain the spindle clamping oil pressure according to the load amount, and also checks the spindle pressure to match the presented hydraulic pressure; A solenoid driving unit for clamping the hydraulic control unit to selectively drive a plurality of hydraulic solenoids under the control of the PLC control unit to transmit hydraulic pressure to the brake device; An unclamp solenoid drive unit for releasing the hydraulic pressure of the brake device according to the control of the PLC control unit; It is characterized by consisting of a set pressure check unit for confirming the applied hydraulic pressure and the set pressure to transmit it to the PLC control unit.

또한, 상기 솔레노이드 구동부를 구동하는 솔레노이드 밸브는 적어도 2개이며, 상기 솔레노이드 밸브는 각각 제어라인이 PLC 제어부에 연결된 것이 특징이다.In addition, the solenoid valve for driving the solenoid drive unit is at least two, each of the solenoid valve is characterized in that the control line is connected to the PLC control unit.

또한, 스핀들 클램프 가공조건을 설정하는 단계와; 스핀들 클램프 커팅 가공을 실행하는 단계와; 스핀들 모터의 부하량을 검출하는 단계와; 부하량에 다른 클램프 압력을 설정하는 단계와; 설정된 부하량에 따른 최적의 조건으로 다수개의 유압 솔레노이드를 선택적으로 조합하여 구동하여 유량을 제어하는 솔레노이드 밸브 작동 단계와; 솔레노이드 밸브 작동에 따른 실제 부하량을 검출하는 단계와; 상기 단계에서 검출한 스핀들 모터 부하량이 미리 설정된 부하량과 일치하는지를 판단하여 일치하지 않으면 경보음을 출력하고 일치하면 스핀들 커팅 가공을 실행하는 단계로 이루어지는 것이 특징이다.In addition, setting the spindle clamp processing conditions; Executing a spindle clamp cutting process; Detecting a load of the spindle motor; Setting a different clamp pressure for the load amount; A solenoid valve operating step of controlling a flow rate by selectively combining and driving a plurality of hydraulic solenoids under an optimum condition according to a set load amount; Detecting an actual load according to the solenoid valve operation; It is characterized in that it comprises a step of executing a spindle cutting process if it is determined that the spindle motor load detected in the above step is consistent with a preset load, and if it does not match, an alarm sound is output.

본 발명의 그 밖의 목적, 특정한 장점들 및 신규한 특징들은 첨부된 도면들과 연관되어지는 이하의 상세한 설명과 바람직한 실시예들로부터 더욱 분명해질 것 이다.Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

이하, 본 발명의 바람직한 실시예를 첨부된 도면들을 참조하여 상세히 설명한다. 우선 각 도면의 구성요소들에 참조부호를 부가함에 있어서, 동일한 구성요소들에 대해서는 비록 다른 도면상에 표시되더라도 가능한한 동일한 부호를 가지도록 하고 있음에 유의하여야 한다. 또한, 하기에서 본 발명을 설명함에 있어, 관련된 공지기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

도 1은 본 발명의 구성도로서, 도시한 바와 같이, 본 발명은 크게 4가지 구성요소로 이루어진다.1 is a configuration diagram of the present invention, as shown, the present invention is largely composed of four components.

즉, 스핀들 모터의 부하량을 체크하여 그 부하량에 맞도록 스핀들 클램핑 유압을 유지하기 위해 유압 솔레노이드 구동을 위한 제어신호를 출력하고, 아울러 스핀들 압력을 체크하여 제시된 유압에 부합하는지를 체크하는 PLC 제어부(10)와, 상기 PLC 제어부(10)의 제어에 따라 유압 솔레노이드를 구동하여 브레이크 장치에 유압을 송출하는 클램프용 솔레노이드 구동부(20)와, 상기 PLC 제어부(10)의 제어에 따라 브레이크 장치의 유압을 해제하기 위해 솔레노이드 밸브(41)를 제어하는 언클램프용 솔레노이드 구동부(40)와;가해진 유압을 확인하여 설정압을 확인하여 이를 PLC 제어부로 전송하는 설정압력 확인부(30)로 이루어진다.That is, the PLC control unit 10 which checks the load amount of the spindle motor and outputs a control signal for driving the hydraulic solenoid to maintain the spindle clamping oil pressure according to the load amount, and also checks whether the spindle pressure conforms to the presented oil pressure. And a solenoid driver 20 for clamp driving the hydraulic solenoid under the control of the PLC control unit 10 to send hydraulic pressure to the brake unit, and releasing the hydraulic pressure of the brake unit under the control of the PLC control unit 10. In order to control the solenoid valve 41, the unclamp solenoid drive unit 40; and the set pressure check unit 30 for confirming the set pressure by checking the applied hydraulic pressure and transmitting it to the PLC control unit.

먼저, PLC 제어부(10)는 스핀들을 클램핑한 상태에서 가공을 지령하고, 스핀 들 모터의 가공조건에 다른 부하량을 확인하여 해당 부하량에 따른 최적의 스핀들 클램프 압력을 선택하는 작동을 한다.First, the PLC control unit 10 commands the machining while clamping the spindle, and checks a different load amount according to the machining conditions of the spindle motor to select an optimum spindle clamp pressure according to the load amount.

그리고, 상기 PLC 제어부(10)는 클램핑 압력에 따른 부하량을 분석하여 적절한 솔레노이드 구동신호를 출력한다.The PLC controller 10 analyzes the load amount according to the clamping pressure and outputs an appropriate solenoid driving signal.

상기 클램프용 솔레노이드 구동부(20)는 PLC 제어부(10)의 지령에 따라서 다수개의 솔레노이드 밸브(21) 중에서 선택된 해당 솔레노이드 밸브를 작동하여 브레이크로 향하는 최적의 압력으로 유압공급이 선택되도록 한다.The clamp solenoid drive unit 20 operates the corresponding solenoid valve selected from the plurality of solenoid valves 21 according to the command of the PLC control unit 10 so that the hydraulic pressure supply is selected at the optimum pressure directed to the brake.

더 상세하게는 본원발명에서는 4개의 솔레노이드 밸브 구동라인을 구비하고 있는바, 상기 4개의 솔레노이드 밸브 구동라인은 각각 다른 압력으로 조절될 수 있는 파이프를 연결하고, 이들을 조합하게 되면 15가지로 압력을 변화시켜 제어할 수 있게 된다.More specifically, in the present invention, four solenoid valve driving lines are provided. The four solenoid valve driving lines connect pipes that can be adjusted to different pressures, and when they are combined, the pressure is changed to 15 kinds. Can be controlled.

즉, 솔레노이드 밸브(21) 구동라인의 갯수를 조합하여 다양한 압력변화가 가능하므로 필요에 따라서 다수개의 솔레노이드 밸브 구동라인을 이용하여 필요한 압력을 정밀하게 제어할 수 있으며, 본 발명의 실시예에서는 4개의 솔레노이드 밸브(21) 구동라인을 예시하고 있으나 그 갯수는 필요에 따라 얼마든지 조절할 수 있음은 물론이다.That is, various combinations of the number of the solenoid valve 21 driving lines are possible, so that the necessary pressure can be precisely controlled by using a plurality of solenoid valve driving lines as needed. Although the solenoid valve 21 drive line is illustrated, the number can of course be adjusted as needed.

상기 설정압력 확인부(30)는 현재 브레이크 장치에 가해지고 있는 유압을 체크하여 PLC 제어부로 출력하는바, PLC 제어부(10)는 설정압력 확인부(30)의 신호에 따라서 지령한 압력과 결과값 압력을 상호 비교하여 지령된 내용되고 브레이크 압력이 실행되고 있는지를 판단하여 지령된 압력이 아니면 경보신호를 출력토록 한 다.The set pressure checking unit 30 checks the hydraulic pressure currently applied to the brake device and outputs it to the PLC control unit. The PLC control unit 10 commands the commanded pressure and the result value according to the signal of the set pressure checking unit 30. By comparing the pressure with each other, it is determined whether the commanded contents and brake pressure are being executed, and if it is not the commanded pressure, an alarm signal is output.

도 3은 본 발명의 플로우 챠트로서,3 is a flow chart of the present invention;

스핀들 클램프 가공조건을 설정하는 단계(S1)와;Setting a spindle clamp machining condition (S1);

스핀들 클램프 커팅 가공을 실행하는 단계(S2)와;Performing a spindle clamp cutting process (S2);

스핀들 모터의 부하량을 검출하는 단계(S3)와;Detecting a load amount of the spindle motor (S3);

부하량에 다른 클램프 압력을 설정하는 단계(S4)와;Setting a different clamp pressure to the load amount (S4);

설정된 부하량에 따른 최적의 조건으로 유량을 제어하는 솔레노이드 밸브를 개방하는 단계(S5)와;Opening the solenoid valve for controlling the flow rate under optimum conditions according to the set load amount (S5);

솔레노이드 밸브 작동에 따른 실제 부하량을 검출하는 단계(S6)와;Detecting an actual load according to the solenoid valve operation (S6);

상기 단계에서 검출한 스핀들 모터 부하량이 미리 설정된 부하량과 일치하는지를 판단하여 일치하지 않으면 경보음을 출력하고 일치하면 스핀들 커팅 가공을 실행하는 단계(S7)Y로 이루어진다.Step S7 is performed to determine whether the spindle motor load detected in the above step is consistent with the preset load, and if not, outputs an alarm sound and executes spindle cutting processing if it matches.

결국, 종래의 스핀들 클램프 상태에서의 가공방법에서는 스핀들 클램프 압력을 설정함에 있어 최적의 스핀들 클램프 압력을 설정하기 위해 다수의 가공 테스트를 하여 최적의 클램프 압력을 설정하였기 때문에 가공준비 시간이 많이 걸리는 단점이 있었으며, 또한 가공 절삭조건이 변경됨에 따라 스핀들 클램프 압력도 변경되므로 최적의 클램프 압력을 조건이 변경될 때마다 재설정해야 하는 번거로움이 발생하였으나, 본 발명은 가공 절삭조건에 따라 스핀들 모터에 걸리는 부하량을 확인하여 최적의 클램프 압력으로 설정하게 되므로 작업시간을 줄일 수 있으며 가공조건의 변화에 즉각적인 압력변경이 가능하도록 작업자의 편의를 도모할 수 있다.As a result, the conventional machining method in the spindle clamp state has a disadvantage in that it takes a lot of time to prepare the machining because a plurality of machining tests have been performed to set the optimum clamp pressure in order to set the optimum spindle clamp pressure. In addition, since the spindle clamp pressure changes as the machining cutting conditions change, there is a need to reset the optimum clamp pressure each time the condition is changed. However, in the present invention, the load applied to the spindle motor according to the machining cutting conditions is increased. By checking and setting the optimum clamp pressure, the working time can be shortened and the operator's convenience can be made so that the pressure can be changed immediately when the processing conditions change.

상술한 바와 같이 본 발명은 스핀들의 클램프 압력을 다양한 범위내에서 자동으로 제어토록 함으로서 가공조건의 변화에 따라서 적극적으로 대처할 수 있는 효과를 제공한다.As described above, the present invention allows the clamp pressure of the spindle to be automatically controlled within various ranges, thereby providing an effect that can be actively coped with in accordance with the change in the processing conditions.

비록 본 발명이 상기에서 언급한 바람직한 실시예와 관련하여 설명되어졌지만, 본 발명의 요지와 범위로부터 벗어남이 없이 다른 다양한 수정 및 변형이 가능할 것이다. 따라서, 첨부된 청구의 범위는 본 발명의 진정한 범위내에 속하는 그러한 수정 및 변형을 포함할 것이라고 여겨진다.Although the present invention has been described in connection with the above-mentioned preferred embodiments, various other modifications and variations may be made without departing from the spirit and scope of the invention. Accordingly, it is intended that the appended claims cover such modifications and variations as fall within the true scope of the invention.

Claims (3)

스핀들 모터의 부하량을 체크하여 그 부하량에 맞도록 스핀들 클램핑 유압을 유지하기 위해 유압 솔레노이드 구동을 위한 제어신호를 출력하고, 아울러 스핀들 압력을 체크하여 제시된 유압에 부합하는지를 체크하는 PLC 제어부(10)와;A PLC control unit 10 which checks the load amount of the spindle motor and outputs a control signal for driving the hydraulic solenoid to maintain the spindle clamping oil pressure according to the load amount, and checks whether the spindle pressure corresponds to the presented oil pressure; 상기 PLC 제어부의 제어에 따라 다수개의 유압 솔레노이드를 선택적으로 조합하여 구동하여 브레이크 장치에 유압을 송출하는 클램프용 솔레노이드 구동부(20)와,A solenoid drive unit 20 for clamping and driving hydraulic pressure to the brake device by selectively combining a plurality of hydraulic solenoids under the control of the PLC control unit; 상기 PLC 제어부의 제어에 따라 브레이크 장치의 유압을 해제하기 위한 언클램프용 솔레노이드 구동부(40)와;An unclamp solenoid drive unit 40 for releasing the hydraulic pressure of the brake device according to the control of the PLC control unit; 가해진 유압을 확인하고 설정압을 확인하여 이를 PLC 제어부로 전송하는 설정압력 확인부(30)로 이루어지는 것을 특징으로 하는 공작기계의 스핀들 클램프 압력자동 조정장치.The spindle clamp pressure automatic adjustment device of the machine tool, characterized in that consisting of the set pressure check unit 30 for confirming the applied hydraulic pressure and confirming the set pressure and transmitting it to the PLC control unit. 제 1 항에 있어서,The method of claim 1, 상기 솔레노이드 구동부를 구동하는 솔레노이드 밸브는 적어도 2개이며, 상기 솔레노이드 밸브는 각각 제어라인이 PLC 제어부에 연결된 것을 특징으로 하는 공작기계의 스핀들 클램프 압력자동 조정장치.At least two solenoid valves for driving the solenoid drive unit, the solenoid valve is a spindle clamp pressure automatic adjustment device of the machine tool, characterized in that each control line is connected to the PLC control unit. 스핀들 클램프 가공조건을 설정하는 단계(S1)e와;Setting a spindle clamp machining condition (S1) e; 스핀들 클램프 커팅 가공을 실행하는 단계(S2)와;Performing a spindle clamp cutting process (S2); 스핀들 모터의 부하량을 검출하는 단계(S3)와;Detecting a load amount of the spindle motor (S3); 부하량에 다른 클램프 압력을 설정하는 단계(S4)와;Setting a different clamp pressure to the load amount (S4); 설정된 부하량에 따른 최적의 조건으로 다수개의 유압 솔레노이드를 선택적으로 조합하여 구동하여 유량을 제어하는 솔레노이드 밸브 작동 단계(S5)와;A solenoid valve operating step (S5) of controlling a flow rate by selectively combining and driving a plurality of hydraulic solenoids under an optimum condition according to a set load amount; 솔레노이드 밸브 작동에 따른 실제 부하량을 검출하는 단계(S6)와;Detecting an actual load according to the solenoid valve operation (S6); 상기 단계에서 검출한 스핀들 모터 부하량이 미리 설정된 부하량과 일치하는지를 판단하여 일치하지 않으면 경보음을 출력하고 일치하면 스핀들 커팅 가공을 실행하는 단계(S7)로 이루어지는 것을 특징으로 하는 공작기계의 스핀들 클램프 압력자동 조정방법.It is determined whether or not the spindle motor load detected in the above step is consistent with the preset load, and if it does not match, an alarm sound is output and if it matches, the spindle cutting pressure is automatically performed. How to adjust.
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