WO2014061930A1 - Thermal displacement prevention device and thermal displacement prevention method for machine tool having ball screw - Google Patents

Thermal displacement prevention device and thermal displacement prevention method for machine tool having ball screw Download PDF

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Publication number
WO2014061930A1
WO2014061930A1 PCT/KR2013/008854 KR2013008854W WO2014061930A1 WO 2014061930 A1 WO2014061930 A1 WO 2014061930A1 KR 2013008854 W KR2013008854 W KR 2013008854W WO 2014061930 A1 WO2014061930 A1 WO 2014061930A1
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WIPO (PCT)
Prior art keywords
temperature
bearing
ball screw
machine tool
thermal displacement
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PCT/KR2013/008854
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French (fr)
Korean (ko)
Inventor
노진성
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두산인프라코어 주식회사
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Priority to CN201380054060.5A priority Critical patent/CN104718052B/en
Publication of WO2014061930A1 publication Critical patent/WO2014061930A1/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
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
    • 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
    • B23Q11/00—Accessories 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
    • B23Q11/14—Methods or arrangements for maintaining a constant temperature in parts of machine tools
    • B23Q11/143—Methods or arrangements for maintaining a constant temperature in parts of machine tools comprising heating means
    • 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
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms

Definitions

  • the present invention relates to a thermal displacement preventing device and a thermal displacement preventing method of a machine tool having a ball screw, and more particularly, to prevent thermal displacement by a heating unit and a temperature sensor mounted on a bearing housing, and by a control unit.
  • the present invention relates to a thermal displacement preventing device and a thermal displacement preventing method of a machine tool having a ball screw capable of preventing thermal displacement by controlling on / off of a power supply device for supplying power to a heating unit.
  • the ball screw 10 includes a bearing 22 in contact with the ball screw 10, a bearing housing 21 surrounding the ball screw 10, and a power transmission unit for rotating the ball screw.
  • the ball screw 10 is a thermal deformation due to heat generated by the mechanical friction, that is, the expansion and contraction according to the thermal deformation occurs.
  • the heat deformation of the ball screw is caused by the frictional heat of the ball screw and the bearing, the precision of the workpiece is reduced in the machine tool requiring high precision, and thus, the productivity of the machine tool is reduced.
  • the present invention is to solve the above problems, the present invention is a heat displacement by friction heat of the ball screw and the bearing in the machine tool equipped with the ball screw by the heating unit and the temperature sensor mounted on the bearing housing to warm up the bearing
  • a thermal displacement preventing device of a machine tool having a ball screw to prevent the damage more specifically, sudden drop in temperature during the machine tool stops for a while after the operation of the machine tool in a cold state or in a cold state, such as winter It aims to prevent thermal displacement by low temperature during operation.
  • Another object of the present invention is provided with a ball screw by controlling the power of the power supply unit applied to the heating unit according to the temperature measured by the temperature sensor through a control unit having a temperature storage unit, a memory unit and a control unit It is an object of the present invention to provide a thermal displacement prevention method that can minimize thermal displacement of a machine tool.
  • the apparatus for preventing heat displacement of a machine tool having a ball skew includes: a bearing installed at an outer circumference of the ball screw; A bearing housing for supporting the bearing; A space part formed on an upper side of the bearing housing; A heating unit having an external shape corresponding to the internal shape of the space part; A temperature sensor installed at a position facing the heating unit; And a control unit controlling on / off of the power supply device for supplying power to the heating unit according to the temperature measured by the temperature sensor.
  • the heating unit has a heat coil having a shape corresponding to the internal shape of the space portion; A heating coil installed in the heating coil and generating heat; A heating wire insulator installed on an upper end of the heating wire fin to insulate the heating coil; And a hot wire wire, one end of which is inserted into the hot wire insulator, is connected to the hot wire coil, and the other end thereof is connected to a power supply device to supply power to the hot wire coil.
  • the control unit includes a temperature storage unit for storing the temperature of the bearing measured by the temperature sensor; A memory unit in which a predetermined temperature of the bearing is stored; And a controller configured to control the on / off of the power supply by comparing the measured temperature of the bearing stored in the temperature storage unit with the temperature stored in the memory unit.
  • a method for preventing heat displacement of a machine tool having a ball skew includes measuring a temperature of a bearing by a temperature sensor; Transmitting the measured temperature of the bearing to a temperature storage unit; Comparing the measured temperature of the bearing stored in the temperature storage unit with a preset temperature value of the bearing stored in the memory unit; And controlling on / off of the power supply device according to the compared temperature.
  • the device and the correction method of the machine tool by the static deflection according to the present invention especially in the cold or cold conditions, such as during the operation of the machine tool for a while after a short stop after the operation of the machine in the cold or cold
  • By correcting the position error of the machine tool due to the static deflection generated in real time has the effect of improving the processing precision and productivity of the workpiece.
  • the correction device and the correction method of the machine tool by the static deflection according to the present invention determines the amount of deflection error according to the prediction for each measurement position of each structure of the machine tool according to the prediction and not the amount of correction according to the actual static deflection By calculating and correcting this, it is possible to improve productivity through accurate error correction.
  • the correction apparatus and the correction method of the machine tool by the static deflection according to the present invention do not need to calculate the expected error amount according to all the transfer sections of the machine tool, thereby saving time and cost for the position correction by the static deflection It can be effective.
  • FIG. 1 shows a cross-sectional view of a device for preventing thermal displacement in a machine tool with a conventional ball screw.
  • Figure 2 shows a conceptual diagram of a thermal displacement prevention apparatus of a machine tool having a ball screw according to an embodiment of the present invention.
  • Figure 3 is a plan view showing the installation position of the heating unit and the temperature sensor in the heat displacement prevention device of the machine tool having a ball screw according to an embodiment of the present invention.
  • Figure 4 shows a detailed cross-sectional view of the heating unit in the heat displacement prevention device of the machine tool having a ball screw according to an embodiment of the present invention.
  • FIG. 5 is a flowchart illustrating a method for preventing thermal displacement of a machine tool having a ball screw according to an exemplary embodiment of the present invention.
  • control unit control unit
  • 71 temperature storage unit
  • Figure 2 shows a conceptual diagram of a thermal displacement prevention apparatus of a machine tool having a ball screw according to an embodiment of the present invention.
  • Figure 3 is a plan view showing the installation position of the heating unit and the temperature sensor in the heat displacement prevention device of the machine tool having a ball screw according to an embodiment of the present invention
  • Figure 4 is according to a preferred embodiment of the present invention The detailed cross section of a heating unit in the heat displacement prevention apparatus of the machine tool provided with the ball screw is shown.
  • Heat displacement prevention device of a machine tool provided with a ball screw according to the present invention is a bearing 22, a bearing housing 21, a space 50, a heating unit 30, a temperature sensor 40, and a control unit ( 70).
  • the ball screw 10 is used as a conveying means of the machine tool by converting the rotational motion into a linear motion.
  • the bearing 22 is installed on the outer circumference of the ball screw 10.
  • the bearing housing 21 supports the bearing 22, and the bearing housing 21 is installed to surround the bearing 22 so as to couple the bearing 22 to the ballscrew 10.
  • the space 50 is formed on one side of the upper portion of the bearing housing 21.
  • the space 50 is 90 mm in length and 6 mm (pie) in diameter.
  • the space 50 is formed in a two-layer structure is the heating unit 30 and the temperature The sensor 40 and the machine tool may be prevented from being separated from the space 50 even during operation.
  • the heating unit 30 has an external shape corresponding to the internal shape of the space 50 and is inserted into the space 50.
  • the temperature sensor 40 is installed on the other upper side of the bearing housing 21 to face the heating unit 30.
  • the control unit 70 controls on / off of the power supply device 80 that supplies power to the heating unit 30 according to the temperature measured by the temperature sensor 40. That is, the temperature of the bearing 22 is measured in real time through the temperature sensor 40, and the on / off of the power supply device 80 is controlled by comparing the real time temperature of the bearing with a preset temperature.
  • the predetermined temperature is preferably set to 18 ° C ⁇ 20 ° C.
  • the heat displacement preventing device of the machine tool having the ball screw minimizes the heat deformation caused by the frictional heat generated by the mechanical friction between the ball screw and the bearing, thereby reducing the machining error of the workpiece to reduce the productivity of the workpiece.
  • through the on / off control of the power supply device 80 for supplying power to the heating unit 30 to perform the appropriate temperature warm-up operation of the equipment for a long time before processing the workpiece of the machine tool heating unit 30 In this way, productivity can be improved by performing a warm-up operation of equipment for processing a workpiece in a short time.
  • productivity can be improved by performing a warm-up operation of equipment for processing a workpiece in a short time.
  • the equipment for processing the workpiece is operated at an appropriate temperature, it is possible to reduce the thermal deformation prevention and to reduce the cost for maintaining the thermal deformation prevention.
  • the heating unit 30 is a hot wire fin 34, hot coil (33), hot wire It consists of the insulator 32 and the hot wire wire 31.
  • the hot wire fin 34 has a shape corresponding to the internal shape of the space 50.
  • the hot wire pin 34 is projected to the outside of the bearing housing 22 to correspond to the two-layer structure of the space 50
  • the upper portion of the hot wire fin 34 is formed to have a larger diameter than the lower portion of the hot wire fin 34.
  • the hot wire coil 33 is installed on the internal space of the hot wire fin 34.
  • the hot wire coil 33 warms up the bearing 21 by generating heat by the power supplied through the hot wire wire 31 when the power supply device 80 is turned on by the control unit.
  • the hot wire insulator 32 is installed on the upper end of the hot wire pin 34.
  • the heating unit 30 protects the heating unit 30 from an accident such as a short circuit occurring when power is applied to the heating coil 33 by the hot wire insulator 32.
  • One end of the heating wire 31 is inserted into the heating wire insulator 32 and connected to the heating coil 33, the other end of the heating wire 31 is connected to the power supply device 80, the power supply device 80 Power is supplied to the heating coil 33 when it is turned on.
  • control unit 70 is a temperature storage unit 71, memory unit 72, And a control unit 73.
  • the temperature storage unit 71 stores the temperature of the bearing 22 measured in real time by the temperature sensor 40, and transmits the temperature of the bearing 220 stored in real time to the controller 73.
  • the memory unit 72 stores a suitable temperature of the bearing 22 in a database in consideration of the length and diameter of the ball screw and the like.
  • the predetermined temperature of the bearing stored in the memory unit 72 of the heat displacement preventing apparatus of the machine tool having the ball screw according to the present invention is preferably 18 ° C ⁇ 20 ° C, memory Most preferably, the preset temperature of the bearing stored in the part is 20 ° C.
  • the control unit 73 is measured in real time to compare the temperature of the bearing stored in the temperature storage unit 71 with the numerical value stored at a predetermined temperature in the memory unit 72 to turn on / off (on / off) of the power supply device (80) ).
  • the power supply of the power supply device may be cut off to prevent unnecessary energy from being wasted, thereby reducing costs.
  • FIG. 5 is a flowchart illustrating a method for preventing thermal displacement of a machine tool having a ball screw according to an exemplary embodiment of the present invention.
  • Heat displacement prevention method of a machine tool having a ball screw according to the present invention step of measuring the real-time temperature of the bearing (S1), transmitting the measured temperature to the temperature storage unit (S2), the preset temperature And comparing the measured temperature stored in the temperature storage unit (S3), and controlling the on / off of the power supply device 80 (S4).
  • the temperature of the bearing is measured by the temperature sensor 40 in real time. After the temperature measuring step S1 of the bearing, the measured real-time temperature of the bearing is transmitted to the temperature storage unit 71. After the step S2 of transferring to the temperature storage unit 71, the bearings stored in the temperature storage unit 71 and the preset temperature (18 ° C to 20 ° C) of the bearing 22 stored in the memory unit 72. Compare the measured temperature in real time. After comparing the preset temperature with the real-time measurement temperature (S3), the controller 73 controls on / off of the power supply device 80 according to the compared temperature.
  • the present invention prevents thermal displacement by a heating unit and a temperature sensor mounted on a bearing housing, and controls the thermal displacement by controlling the on / off of a power supply device that supplies power to the heating unit by a control unit.
  • the present invention relates to a heat displacement preventing device and a heat displacement preventing method of a machine tool having a ball screw that can be prevented.

Abstract

One object of the present invention is to prevent thermal displacement caused by the heat due to mechanical friction of a ball screw and bearing. The present invention relates to a thermal displacement prevention device for a machine tool having a ball screw and to a thermal displacement prevention method for a machine tool having a ball screw, wherein the thermal displacement prevention device includes: a bearing (22) disposed at the outer circumferential edge of a ball screw (10) in a machine tool having the ball screw (10); a bearing housing (21) which supports the bearing (22); a space part (50) formed on one upper side surface of the bearing housing (21); a heating unit (30) having an external shape which corresponds to the internal shape of the space part (50); a temperature sensor (40) disposed at a position facing the heating unit (30); and a control unit (70) which controls the ON/OFF of a power supply device (80) supplying power to the heating unit (30) according to the temperature measured by the temperature sensor (40).

Description

볼스크류를 구비한 공작기계의 열변위 방지장치 및 열변위 방지방법Heat displacement preventing device and heat displacement preventing method of machine tool with ball screw
본 발명은 볼스크류를 구비한 공작기계의 열변위 방지장치 및 열변위 방지방법에 관한 것으로, 더욱 상세하게는 베어링 하우징에 장착되는 히팅유닛과 온도센서에 의해 열변위를 방지하고, 제어유닛에 의해 히팅유닛에 전원을 공급하는 전원공급장치의 온/오프(on/off)를 제어하여 열변위를 방지할 수 있는 볼스크류를 구비한 공작기계의 열변위 방지장치 및 열변위 방지방법에 관한 것이다. The present invention relates to a thermal displacement preventing device and a thermal displacement preventing method of a machine tool having a ball screw, and more particularly, to prevent thermal displacement by a heating unit and a temperature sensor mounted on a bearing housing, and by a control unit. The present invention relates to a thermal displacement preventing device and a thermal displacement preventing method of a machine tool having a ball screw capable of preventing thermal displacement by controlling on / off of a power supply device for supplying power to a heating unit.
터닝센터, 머시닝센터, 문형머시닝센터, 스위스 턴, 방전 가공기, 수평형 NC 보링머신, CNC 선반 등을 비롯한 다양한 종류의 공작기계는 다양한 산업 현장에서 해당 작업의 용도에 맞게 널리 사용되고 있다.Various types of machine tools, including turning centers, machining centers, door machining centers, swiss turns, electric discharge machines, horizontal NC boring machines and CNC lathes, are widely used for various applications in various industrial fields.
도 1에 도시된 것처럼, 일반적으로 다양한 종류의 공작기계는 회전운동을 직선운동으로 바꾸기 위해 볼스크류를 이용한다. 볼스크류(10)는 볼스크류(10)와 접촉하는 베어링(22)과 이를 둘러싸는 베어링 하우징(21) 및 볼스크류를 회전시키는 동력전달부로 이루어진다.As shown in Fig. 1, various types of machine tools generally use ball screws to convert rotational motion into linear motion. The ball screw 10 includes a bearing 22 in contact with the ball screw 10, a bearing housing 21 surrounding the ball screw 10, and a power transmission unit for rotating the ball screw.
일반적으로 볼스크류(10)는 기계적 마찰에 의해 발생되는 열에 의한 열변형, 즉 바꾸어 말하면 열변형에 따른 신축이 일어나게 된다. 볼스크류와 베어링의 마찰열에 의해 볼스크류의 열변형이 발생되는 경우에는 고정밀도를 요하는 공작기계에서 가공물의 정밀도를 감소시키게 되고, 결국 공작기계의 생산성을 감소시키는 문제를 발생시키게 된다.In general, the ball screw 10 is a thermal deformation due to heat generated by the mechanical friction, that is, the expansion and contraction according to the thermal deformation occurs. When the heat deformation of the ball screw is caused by the frictional heat of the ball screw and the bearing, the precision of the workpiece is reduced in the machine tool requiring high precision, and thus, the productivity of the machine tool is reduced.
도 1에 도시된 것처럼, 종래 볼스크류(10)를 이용하는 공작기계의 경우 볼스크류(10)와 베어링(21)의 마찰열에 의한 열변형을 최소화하기 위해, 볼스크류의 내부 공동으로 공기(air)를 강제로 주입하여 간접적으로 볼스크류(10)를 냉각하여 베어링(21)의 열변형을 방지하였다. 그러나, 이와 같은 종래 기술의 경우 마찰열이 가장 많이 발생되는 베어링(21)을 직접 냉각하는 것이 아니라, 간접적으로 볼스크류(10)를 냉각하고, 냉각된 볼스크류에 의해 간접적으로 베어링(21)을 냉각시키는 것으로 열변형 방지를 위해 지속적으로 공기를 강제로 주입하여야 함에 따라 많은 비용과 시간이 소모되는 문제점이 있었다.As shown in FIG. 1, in the case of a machine tool using the conventional ball screw 10, in order to minimize thermal deformation due to frictional heat of the ball screw 10 and the bearing 21, air is provided to the internal cavity of the ball screw. Was forced to inject the ball screw 10 indirectly to prevent the thermal deformation of the bearing (21). However, in the case of the conventional technology, the ball 21 is indirectly cooled, and the bearing 21 is indirectly cooled by the cooled ball screw, not directly cooling the bearing 21 in which the frictional heat is generated the most. There is a problem in that a lot of cost and time is consumed by constantly injecting air to prevent thermal deformation.
또한, 공작기계가 정지된 상태, 즉 볼스크류가 냉각된 상태에서 공작기계를 가동시키는 경우에는 베어링도 냉각된 상태를 유지하여, 공작물의 열변위 방지를 위해 베어링이 일정온도에 도달할 때까지 가공물의 가공작업을 하지 않고 예비적으로 공작기계를 가동시켜 공작기계를 워밍업(worming up)시키는 과정을 장시간 필요로 하여 전력을 낭비하고 생산성을 감소시키는 문제점이 있었다.In addition, when the machine tool is operated in a state where the machine tool is stopped, that is, the ball screw is cooled, the bearing is also cooled, until the bearing reaches a certain temperature to prevent thermal displacement of the workpiece. There is a problem in that it takes a long time to warm up the machine tool by operating the machine tool preliminarily without a machining operation, thereby wasting power and reducing productivity.
더욱이, 정밀가공시에 열변위에 따라 가공 오차가 발생되는 문제점이 있었다.Moreover, there was a problem that a machining error occurs due to thermal displacement during precision processing.
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 본 발명은 베어링 하우징에 장착되어 베어링을 워밍업 시키는 히팅유닛과 온도센서에 의해 볼스크류를 구비한 공작기계에서 볼스크류와 베어링의 마찰열에 의한 열변위를 방지하는 볼스크류를 구비한 공작기계의 열변위 방지장치를 제공하기 위한 것으로, 보다 구체적으로 한냉지역이나 겨울철과 같은 저온 상태에서 공작기계의 가동 후에 공작기계가 잠시 정지하는 동안 급격한 온도저하 또는 최초 가동시에 저온에 의한 열변위를 방지하는 것을 목적으로 한다.The present invention is to solve the above problems, the present invention is a heat displacement by friction heat of the ball screw and the bearing in the machine tool equipped with the ball screw by the heating unit and the temperature sensor mounted on the bearing housing to warm up the bearing In order to provide a thermal displacement preventing device of a machine tool having a ball screw to prevent the damage, more specifically, sudden drop in temperature during the machine tool stops for a while after the operation of the machine tool in a cold state or in a cold state, such as winter It aims to prevent thermal displacement by low temperature during operation.
또한, 본 발명의 또 다른 목적은 온도저장부, 메모리부 및 제어부를 구비한 제어유닛을 통해 온도센서에 의해 측정된 온도에 따라 히팅유닛에 인가되는 전원공급장치의 전원을 제어하여 볼스크류를 구비한 공작기계의 열변위를 최소화할 수 있는 열변위 방지방법을 제공하는 것을 목적으로 한다.In addition, another object of the present invention is provided with a ball screw by controlling the power of the power supply unit applied to the heating unit according to the temperature measured by the temperature sensor through a control unit having a temperature storage unit, a memory unit and a control unit It is an object of the present invention to provide a thermal displacement prevention method that can minimize thermal displacement of a machine tool.
본 발명의 목적을 달성하기 위해 본 발명에 의한 볼스큐를 구비한 공작기계의 열변위 방지장치는 상기 볼스크류의 외주연에 설치되는 베어링; 상기 베어링을 지지하기 위한 베어링 하우징; 상기 베어링 하우징의 상부 일측면에 형성된 공간부; 상기 공간부의 내부 형상에 대응되는 외부 형상을 구비하는 히팅유닛; 상기 히팅유닛과 마주하는 위치에 설치되는 온도센서; 및 상기 온도센서에서 측정된 온도에 따라 상기 히팅유닛에 전원을 공급하는 전원공급장치의 온/오프(on/off)를 제어하는 제어유닛;을 포함하는 것을 특징으로 한다. In order to achieve the object of the present invention, the apparatus for preventing heat displacement of a machine tool having a ball skew according to the present invention includes: a bearing installed at an outer circumference of the ball screw; A bearing housing for supporting the bearing; A space part formed on an upper side of the bearing housing; A heating unit having an external shape corresponding to the internal shape of the space part; A temperature sensor installed at a position facing the heating unit; And a control unit controlling on / off of the power supply device for supplying power to the heating unit according to the temperature measured by the temperature sensor.
또한, 본 발명에 의한 볼스큐를 구비한 공작기계의 열변위 방지장치의 바람직한 다른 실시예에서, 상기 히팅유닛은 상기 공간부의 내부 형상에 대응되는 형상을 구비하는 열선핀; 상기 열선핀의 내부에 설치되고, 열을 발생시키는 열선코일; 상기 열선코일의 절연을 위해 상기 열선핀의 상단에 설치되는 열선 애자; 및 일단은 상기 열선 애자의 내부로 삽입되어 상기 열선코일과 연결되고, 타단은 전원공급장치와 연결되어 상기 열선코일에 전원을 공급하는 열선 전선;을 포함한다.In addition, in another preferred embodiment of the heat displacement preventing device of the machine tool having a ball skew according to the present invention, the heating unit has a heat coil having a shape corresponding to the internal shape of the space portion; A heating coil installed in the heating coil and generating heat; A heating wire insulator installed on an upper end of the heating wire fin to insulate the heating coil; And a hot wire wire, one end of which is inserted into the hot wire insulator, is connected to the hot wire coil, and the other end thereof is connected to a power supply device to supply power to the hot wire coil.
또한, 본 발명에 의한 볼스큐를 구비한 공작기계의 열변위 방지장치의 바람직한 다른 실시예에서, 제어유닛은 상기 온도센서에서 측정된 베어링의 온도를 저장하는 온도저장부; 상기 베어링의 기설정 온도가 저장된 메모리부; 상기 온도저장부에 저장된 베어링의 측정온도와 상기 메모리부에 저장된 온도를 비교하여 상기 전원공급장치의 온/오프(on/off)를 제어하는 제어부;를 포함한다.In addition, in another preferred embodiment of the thermal displacement preventing apparatus of the machine tool having a ball skew according to the present invention, the control unit includes a temperature storage unit for storing the temperature of the bearing measured by the temperature sensor; A memory unit in which a predetermined temperature of the bearing is stored; And a controller configured to control the on / off of the power supply by comparing the measured temperature of the bearing stored in the temperature storage unit with the temperature stored in the memory unit.
본 발명의 또 다른 목적을 달성하기 위해 볼스큐를 구비한 공작기계의 열변위 방지방법은 온도센서에 의해 베어링의 온도를 측정하는 단계; 상기 측정된 베어링의 온도를 온도저장부로 전송하는 단계; 메모리부에 저장된 상기 베어링의 기설정 온도값과 상기 온도저장부에 저장된 베어링의 측정온도를 비교하는 단계; 및 상기 비교된 온도에 따라 전원공급장치의 온/오프(on/off)를 제어하는 단계;로 이루어질 수 있다.In order to achieve another object of the present invention, a method for preventing heat displacement of a machine tool having a ball skew includes measuring a temperature of a bearing by a temperature sensor; Transmitting the measured temperature of the bearing to a temperature storage unit; Comparing the measured temperature of the bearing stored in the temperature storage unit with a preset temperature value of the bearing stored in the memory unit; And controlling on / off of the power supply device according to the compared temperature.
본 발명에 의한 정적 처짐에 의한 공작기계의 보정장치 및 보정방법은 특히, 한냉지역이나 겨울철과 같은 저온 상태에서 공작기계의 가동 후에 공작기계가 잠시 정지하는 동안 급격한 온도저하 또는 최초 가동시에 저온에 의해 발생하는 정적 처짐에 의한 공작기계의 위치 오차를 실시간으로 보정하여 가공물의 가공정밀도와 생산성을 향상시킬 수 있는 효과가 있다.The device and the correction method of the machine tool by the static deflection according to the present invention, especially in the cold or cold conditions, such as during the operation of the machine tool for a while after a short stop after the operation of the machine in the cold or cold By correcting the position error of the machine tool due to the static deflection generated in real time has the effect of improving the processing precision and productivity of the workpiece.
또한, 본 발명에 의한 정적 처짐에 의한 공작기계의 보정장치 및 보정방법은 공작기계의 각각의 구조물의 측정 위치마다 처짐 오차량을 예측에 따라 결정하고 보정량을 결정하는 것이 아니라 실제 정적 처짐에 따른 보정량을 계산하여 보정을 함으로써 정확한 오차 보정을 통해 생산성을 향상시킬 수 있는 효과가 있다.In addition, the correction device and the correction method of the machine tool by the static deflection according to the present invention determines the amount of deflection error according to the prediction for each measurement position of each structure of the machine tool according to the prediction and not the amount of correction according to the actual static deflection By calculating and correcting this, it is possible to improve productivity through accurate error correction.
더욱이, 본 발명에 의한 정적 처짐에 의한 공작기계의 보정장치 및 보정방법은 공작기계의 모든 이송구간에 따라 예상 오차량을 산출할 필요가 없어 정적 처짐에 의한 위치 보정을 위한 시간 및 비용을 절감할 수 있는 효과가 있다.Moreover, the correction apparatus and the correction method of the machine tool by the static deflection according to the present invention do not need to calculate the expected error amount according to all the transfer sections of the machine tool, thereby saving time and cost for the position correction by the static deflection It can be effective.
도 1은 종래 볼스크류를 구비한 공작기계에서 열변위를 방지하기 위한 장치의 단면도를 나타낸다.1 shows a cross-sectional view of a device for preventing thermal displacement in a machine tool with a conventional ball screw.
도 2는 본 발명의 바람직한 일 실시예에 따른 볼스크류를 구비한 공작기계의 열변위 방지장치의 개념도를 나타낸다.Figure 2 shows a conceptual diagram of a thermal displacement prevention apparatus of a machine tool having a ball screw according to an embodiment of the present invention.
도 3은 본 발명의 바람직한 일 실시예에 따른 볼스크류를 구비한 공작기계의 열변위 방지장치에서 히팅유닛과 온도센서의 설치위치를 나타내는 평면도이다.Figure 3 is a plan view showing the installation position of the heating unit and the temperature sensor in the heat displacement prevention device of the machine tool having a ball screw according to an embodiment of the present invention.
도 4는 본 발명의 바람직한 일 실시예에 따른 볼스크류를 구비한 공작기계의 열변위 방지장치에서 히팅유닛의 상세 단면도를 나타낸다.Figure 4 shows a detailed cross-sectional view of the heating unit in the heat displacement prevention device of the machine tool having a ball screw according to an embodiment of the present invention.
도 5는 본 발명의 바람직한 일 실시예에 따른 볼스크류를 구비한 공작기계의 열변위 방지방법의 절차도를 나타낸다.5 is a flowchart illustrating a method for preventing thermal displacement of a machine tool having a ball screw according to an exemplary embodiment of the present invention.
<도면의 부호에 대한 설명><Description of Symbols in Drawing>
10 : 볼 스크류, 21 : 베어링 하우징,10: ball screw, 21: bearing housing,
22 : 베어링, 30 : 히팅유닛,22: bearing, 30: heating unit,
31 : 열선 전선, 32 : 열선 애자,31: hot wire, 32: hot wire insulator,
33 : 열선코일, 34 : 열선핀,33: hot wire coil, 34: hot wire pin,
40 : 온도센서, 50 : 공간부,40: temperature sensor, 50: space part,
70 : 제어유닛, 71 : 온도저장부,70: control unit, 71: temperature storage unit,
72 : 메모리부, 73 : 제어부,72: memory part, 73: control part,
80 : 전원공급장치,80: power supply,
S1 : 베어링의 실시간 온도를 측정하는 단계,S1: measuring the real-time temperature of the bearing,
S2 : 측정된 온도를 온도저장부로 전송하는 단계,S2: transmitting the measured temperature to the temperature storage unit,
S3 : 기설정 온도와 온도저장부에 저장된 측정온도를 비교하는 단계,S3: comparing the preset temperature with the measured temperature stored in the temperature storage unit,
S4 : 전원공급장치(80)의 온/오프(on/off)를 제어하는 단계.S4: controlling the on / off of the power supply 80.
본 발명의 바람직한 실시예를 첨부된 도면들을 참조하여 상세히 설명한다. 우선 각 도면의 구성요소들에 참조번호를 부가함에 있어서, 동일한 구성요소들에 대해서는 동일한 부호를 가지도록 하고 있다.Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to components of each drawing, the same components are designated by the same reference numerals.
도 2는 본 발명의 바람직한 일 실시예에 따른 볼스크류를 구비한 공작기계의 열변위 방지장치의 개념도를 나타낸다. 도 3은 본 발명의 바람직한 일 실시예에 따른 볼스크류를 구비한 공작기계의 열변위 방지장치에서 히팅유닛과 온도센서의 설치위치를 나타내는 평면도이고, 도 4는 본 발명의 바람직한 일 실시예에 따른 볼스크류를 구비한 공작기계의 열변위 방지장치에서 히팅유닛의 상세 단면도를 나타낸다.Figure 2 shows a conceptual diagram of a thermal displacement prevention apparatus of a machine tool having a ball screw according to an embodiment of the present invention. Figure 3 is a plan view showing the installation position of the heating unit and the temperature sensor in the heat displacement prevention device of the machine tool having a ball screw according to an embodiment of the present invention, Figure 4 is according to a preferred embodiment of the present invention The detailed cross section of a heating unit in the heat displacement prevention apparatus of the machine tool provided with the ball screw is shown.
도 2 내지 도 4를 참고하여 본 발명에 의한 볼스크류를 구비한 공작기계의 열변위 방지장치를 설명한다. 본 발명에 의한 볼스크류를 구비한 공작기계의 열변위 방지장치는 베어링(22), 베어링 하우징(21), 공간부(50), 히팅유닛(30), 온도센서(40), 및 제어유닛(70)으로 이루어진다. With reference to Figures 2 to 4 will be described a thermal displacement prevention apparatus of a machine tool having a ball screw according to the present invention. Heat displacement prevention device of a machine tool provided with a ball screw according to the present invention is a bearing 22, a bearing housing 21, a space 50, a heating unit 30, a temperature sensor 40, and a control unit ( 70).
일반적으로 볼스크류(10)는 회전운동을 직선운동으로 변환하여 공작기계의 이송수단으로 사용된다. 베어링(22)이 볼스크류(10)의 외주연에 설치된다. In general, the ball screw 10 is used as a conveying means of the machine tool by converting the rotational motion into a linear motion. The bearing 22 is installed on the outer circumference of the ball screw 10.
베어링 하우징(21)이 베어링(22)을 지지하고, 베어링(22)을 볼스크류(10)에 결합하기 위해 베어링 하우징(21)이 베어링(22)을 둘러싸도록 설치된다. The bearing housing 21 supports the bearing 22, and the bearing housing 21 is installed to surround the bearing 22 so as to couple the bearing 22 to the ballscrew 10.
온도센서(40)와 히팅유닛(30)이 설치되는 공간을 확보하기 위해, 공간부(50)가 베어링 하우징(21)의 상부 일측면에 형성된다. 반드시 이에 한정되는 것은 아니지만 본 발명에 의한 볼스크류를 구비한 공작기계의 열변위 방지장치의 바람직한 실시에에서, 공간부(50)는 길이가 90mm이고 직경이 6φ(파이)로 형성된다. 또한, 도 3에 도시된 것처럼 본 발명에 의한 볼스크류를 구비한 공작기계의 열변위 방지장치의 바람직한 일 실시예에서, 공간부(50)는 2층 구조로 형성되어 히팅유닛(30)과 온도센서(40)과 공작기계의 작동중에도 공간부(50)에서 이탈되는 것을 방지할 수 있다.In order to secure a space in which the temperature sensor 40 and the heating unit 30 are installed, the space 50 is formed on one side of the upper portion of the bearing housing 21. In the preferred embodiment of the heat displacement prevention apparatus of the machine tool provided with the ball screw according to the present invention, although not necessarily limited thereto, the space 50 is 90 mm in length and 6 mm (pie) in diameter. In addition, as shown in Figure 3 in a preferred embodiment of the heat displacement prevention device of the machine tool having a ball screw according to the present invention, the space 50 is formed in a two-layer structure is the heating unit 30 and the temperature The sensor 40 and the machine tool may be prevented from being separated from the space 50 even during operation.
히팅유닛(30)은 공간부(50)의 내부 형상에 대응되는 외부 형상을 구비하고, 공간부(50)에 삽입되어 설치된다.The heating unit 30 has an external shape corresponding to the internal shape of the space 50 and is inserted into the space 50.
온도센서(40)는 히팅유닛(30)과 마주하도록 베어링 하우징(21)의 상부 타측면에 설치된다.The temperature sensor 40 is installed on the other upper side of the bearing housing 21 to face the heating unit 30.
제어유닛(70)은 온도센서(40)에서 측정된 온도에 따라 상기 히팅유닛(30)에 전원을 공급하는 전원공급장치(80)의 온/오프(on/off)를 제어한다. 즉, 온도센서(40)를 통해 실시간으로 베어링(22)의 온도를 측정하고, 베어링의 실시간 온도를 기설정된 온도와 비교하여 전원공급장치(80)의 온/오프를 제어한다.The control unit 70 controls on / off of the power supply device 80 that supplies power to the heating unit 30 according to the temperature measured by the temperature sensor 40. That is, the temperature of the bearing 22 is measured in real time through the temperature sensor 40, and the on / off of the power supply device 80 is controlled by comparing the real time temperature of the bearing with a preset temperature.
본 발명의 바람직한 일 실시예에 따르면 기설정된 온도는 18°C~ 20°C로 설정되는 것이 바람직하다. According to a preferred embodiment of the present invention, the predetermined temperature is preferably set to 18 ° C ~ 20 ° C.
이에 따라 본 발명에 의한 볼스크류를 구비한 공작기계의 열변위 방지장치는 볼스크류와 베어링의 기계적 마찰에 의해 발생되는 마찰열에 의한 열변형 방지를 최소화하여, 공작물의 가공오차를 감소시켜 공작물의 생산성을 증가시키는 효과가 있다. 또한, 히팅유닛(30)에 전원을 공급하는 전원공급장치(80)의 온/오프 제어를 통해 공작기계의 가공물 가공하기 전에 장비의 적정 온도 워밍업 작업을 장시간 동안 시행하던 것을 히팅유닛(30)을 이용하여 단시간에 가공물 가공을 위한 장비의 워밍업 작업을 시행하여 생산성을 향상시킬 수 있다. 더욱이 가공물을 가공하는 장비가 적정 온도로 운전됨에 따라 열변형 방지를 감소시키고, 열변형 방지를 유지하기 위한 비용을 절감시킬 수 있는 효과가 있다.Accordingly, the heat displacement preventing device of the machine tool having the ball screw according to the present invention minimizes the heat deformation caused by the frictional heat generated by the mechanical friction between the ball screw and the bearing, thereby reducing the machining error of the workpiece to reduce the productivity of the workpiece. Has the effect of increasing. In addition, through the on / off control of the power supply device 80 for supplying power to the heating unit 30 to perform the appropriate temperature warm-up operation of the equipment for a long time before processing the workpiece of the machine tool heating unit 30 In this way, productivity can be improved by performing a warm-up operation of equipment for processing a workpiece in a short time. Moreover, as the equipment for processing the workpiece is operated at an appropriate temperature, it is possible to reduce the thermal deformation prevention and to reduce the cost for maintaining the thermal deformation prevention.
도 4에 도시된 것처럼, 본 발명에 의한 볼스크류를 구비한 공작기계의 열변위 방지장치의 바람직한 일 실시예에 따르면, 히팅유닛(30)은 열선핀(34), 열선코일(33), 열선애자(32), 및 열선 전선(31)으로 이루어진다.As shown in Figure 4, according to a preferred embodiment of the heat displacement prevention device of the machine tool having a ball screw according to the present invention, the heating unit 30 is a hot wire fin 34, hot coil (33), hot wire It consists of the insulator 32 and the hot wire wire 31.
열선핀(34)은 공간부(50)의 내부 형상에 대응되는 형상을 구비한다. 본 발명에 의한 볼스크류를 구비한 공작기계의 열변위 방지장치의 바람직한 일 실시예에서 열선핀(34)은 공간부(50)의 2층 구조에 상응하도록 베어링 하우징(22)의 외부로 돌출되는 열선핀(34)의 상부가 열선핀(34)의 하부보다 더 큰 직경을 구비하도록 형성된다.The hot wire fin 34 has a shape corresponding to the internal shape of the space 50. In a preferred embodiment of the heat displacement preventing device of the machine tool having a ball screw according to the present invention, the hot wire pin 34 is projected to the outside of the bearing housing 22 to correspond to the two-layer structure of the space 50 The upper portion of the hot wire fin 34 is formed to have a larger diameter than the lower portion of the hot wire fin 34.
열선코일(33)은 열선핀(34)의 내부 공간상에 설치된다. 열선코일(33)은 제어유닛에 의해 전원공급장치(80)가 온으로 될 경우에 열선 전선(31)을 통해 공급받는 전원에 의해 열을 발생시켜 베어링(21)을 워밍업 시키게 된다. The hot wire coil 33 is installed on the internal space of the hot wire fin 34. The hot wire coil 33 warms up the bearing 21 by generating heat by the power supplied through the hot wire wire 31 when the power supply device 80 is turned on by the control unit.
열선 애자(32)는 열선핀(34)의 상단에 설치된다. 열선 애자(32)에 의해 열선코일(33)에 전원이 인가된 경우 발생되는 누전 등의 사고로 부터 히팅유닛(30)을 보호하게 된다.The hot wire insulator 32 is installed on the upper end of the hot wire pin 34. The heating unit 30 protects the heating unit 30 from an accident such as a short circuit occurring when power is applied to the heating coil 33 by the hot wire insulator 32.
열선 전선(31)의 일단은 열선 애자(32)의 내부로 삽입되어 열선코일(33)과 연결되고, 열선 전선(31)의 타단은 전원공급장치(80)와 연결되어 전원공급장치(80)가 온(on)된 경우에 열선 코일(33)에 전원을 공급한다.One end of the heating wire 31 is inserted into the heating wire insulator 32 and connected to the heating coil 33, the other end of the heating wire 31 is connected to the power supply device 80, the power supply device 80 Power is supplied to the heating coil 33 when it is turned on.
도 2에 도시된 것처럼, 본 발명에 의한 볼스크류를 구비한 공작기계의 열변위 방지장치의 바람직한 일 실시예에 따르면, 제어유닛(70)은 온도저장부(71), 메모리부(72), 및 제어부(73)로 이루어진다.As shown in Figure 2, according to a preferred embodiment of the heat displacement prevention apparatus of the machine tool having a ball screw according to the present invention, the control unit 70 is a temperature storage unit 71, memory unit 72, And a control unit 73.
온도저장부(71)는 온도센서(40)에서 실시간으로 측정된 베어링(22)의 온도를 저장하고, 실시간으로 저장된 베어링(220의 온도를 제어부(73)로 전송한다.The temperature storage unit 71 stores the temperature of the bearing 22 measured in real time by the temperature sensor 40, and transmits the temperature of the bearing 220 stored in real time to the controller 73.
메모리부(72)는 볼스크류의 길이와 직경 등을 고려하여 베어링(22)의 적정 온도를 데이타 베이스(data base)화 하여 저장되어 있다. 반드시 이에 한정되는 것은 아니지만, 본 발명에 의한 볼스크류를 구비한 공작기계의 열변위 방지장치의 메모리부(72)에 저장된 베어링의 기설정 온도는 18°C ~ 20°C인 것이 바람직하고, 메모리부에 저장된 베어링의 기설정 온도는 20°C인 것이 가장 바람직하다. The memory unit 72 stores a suitable temperature of the bearing 22 in a database in consideration of the length and diameter of the ball screw and the like. Although not necessarily limited thereto, the predetermined temperature of the bearing stored in the memory unit 72 of the heat displacement preventing apparatus of the machine tool having the ball screw according to the present invention is preferably 18 ° C ~ 20 ° C, memory Most preferably, the preset temperature of the bearing stored in the part is 20 ° C.
제어부(73)는 실시간으 측정되어 온도저장부(71)에 저장된 베어링의 온도와 메모리부(72)에 기설정된 온도로 저장된 수치를 비교하여 전원공급장치(80)의 온/오프(on/off)를 제어한다.The control unit 73 is measured in real time to compare the temperature of the bearing stored in the temperature storage unit 71 with the numerical value stored at a predetermined temperature in the memory unit 72 to turn on / off (on / off) of the power supply device (80) ).
이에 따라, 열변형 방지가 불필요한 경우에는 전원공급장치의 전원을 차단하여, 불필요한 에너지가 낭비되는 것을 방지하여, 비용을 절감할 수 있다. 또한, 열변형 방지를 최소화하여 가공오차를 감소시켜 생산성을 향상시킬 수 있다. Accordingly, when it is not necessary to prevent thermal deformation, the power supply of the power supply device may be cut off to prevent unnecessary energy from being wasted, thereby reducing costs. In addition, it is possible to improve productivity by minimizing the prevention of thermal deformation to reduce processing errors.
도 5는 본 발명의 바람직한 일 실시예에 따른 볼스크류를 구비한 공작기계의 열변위 방지방법의 절차도를 나타낸다.5 is a flowchart illustrating a method for preventing thermal displacement of a machine tool having a ball screw according to an exemplary embodiment of the present invention.
도 5를 참고하여 본 발명에 의한 볼스크류를 구비한 공작기계의 열변위 방지방법을 설명한다. 본 발명에 의한 본 발명에 의한 볼스크류를 구비한 공작기계의 열변위 방지방법은 베어링의 실시간 온도를 측정하는 단계(S1), 측정된 온도를 온도저장부로 전송하는 단계(S2), 기설정 온도와 온도저장부에 저장된 측정온도를 비교하는 단계(S3), 및 전원공급장치(80)의 온/오프(on/off)를 제어하는 단계(S4)로 이루어진다.Referring to Figure 5 will be described a method of preventing heat displacement of a machine tool having a ball screw according to the present invention. Heat displacement prevention method of a machine tool having a ball screw according to the present invention according to the invention step of measuring the real-time temperature of the bearing (S1), transmitting the measured temperature to the temperature storage unit (S2), the preset temperature And comparing the measured temperature stored in the temperature storage unit (S3), and controlling the on / off of the power supply device 80 (S4).
온도센서(40)에 의해 실시간으로 베어링의 온도를 측정한다. 베어링의 온도측정 단계(S1) 이후에, 측정된 베어링의 실시간 온도를 온도저장부(71)로 전송한다. 온도저장부(71)로 전송하는 단계(S2) 이후에, 메모리부(72)에 저장된 베어링(22)의 기설정 온도(18°C ~ 20°C)와 온도저장부(71)에 저장된 베어링의 실시간 측정온도를 비교한다. 기설정 온도와 실시간 측정온도를 비교하는 단계(S3) 이후에, 비교된 온도에 따라 전원공급장치(80)의 온/오프(on/off)를 제어부(73)를 통해 제어한다. The temperature of the bearing is measured by the temperature sensor 40 in real time. After the temperature measuring step S1 of the bearing, the measured real-time temperature of the bearing is transmitted to the temperature storage unit 71. After the step S2 of transferring to the temperature storage unit 71, the bearings stored in the temperature storage unit 71 and the preset temperature (18 ° C to 20 ° C) of the bearing 22 stored in the memory unit 72. Compare the measured temperature in real time. After comparing the preset temperature with the real-time measurement temperature (S3), the controller 73 controls on / off of the power supply device 80 according to the compared temperature.
본 발명은 도면에 도시된 변형예와 상기에서 설명된 실시예에 국한되지 않으며, 첨부된 청구항의 범주내에 속하는 다른 실시예로 확장될 수 있다.The invention is not limited to the embodiments shown in the figures and the embodiments described above, but may be extended to other embodiments falling within the scope of the appended claims.
본 발명은 베어링 하우징에 장착되는 히팅유닛과 온도센서에 의해 열변위를 방지하고, 제어유닛에 의해 히팅유닛에 전원을 공급하는 전원공급장치의 온/오프(on/off)를 제어하여 열변위를 방지할 수 있는 볼스크류를 구비한 공작기계의 열변위 방지장치 및 열변위 방지방법에 관한 것이다. The present invention prevents thermal displacement by a heating unit and a temperature sensor mounted on a bearing housing, and controls the thermal displacement by controlling the on / off of a power supply device that supplies power to the heating unit by a control unit. The present invention relates to a heat displacement preventing device and a heat displacement preventing method of a machine tool having a ball screw that can be prevented.

Claims (4)

  1. 볼스크류를 구비하는 공작기계에 있어서,In a machine tool provided with a ball screw,
    상기 볼스크류의 외주연에 설치되는 베어링;A bearing installed at an outer circumference of the ball screw;
    상기 베어링을 지지하기 위한 베어링 하우징;A bearing housing for supporting the bearing;
    상기 베어링 하우징의 상부 일측면에 형성된 공간부;A space part formed on an upper side of the bearing housing;
    상기 공간부의 내부 형상에 대응되는 외부 형상을 구비하는 히팅유닛; A heating unit having an external shape corresponding to the internal shape of the space part;
    상기 히팅유닛과 마주하는 위치에 설치되는 온도센서; 및A temperature sensor installed at a position facing the heating unit; And
    상기 온도센서에서 측정된 온도에 따라 상기 히팅유닛에 전원을 공급하는 전원공급장치의 온/오프(on/off)를 제어하는 제어유닛;을 포함하는 것을 특징으로 하는 볼스크류를 구비한 공작기계의 열변위 방지장치. The control unit for controlling the on / off (on / off) of the power supply for supplying power to the heating unit in accordance with the temperature measured by the temperature sensor of the machine tool having a ball screw Thermal displacement prevention device.
  2. 제1항에 있어서,The method of claim 1,
    상기 히팅유닛은,The heating unit,
    상기 공간부의 내부 형상에 대응되는 형상을 구비하는 열선핀;Hot wire pins having a shape corresponding to the internal shape of the space portion;
    상기 열선핀의 내부에 설치되고, 열을 발생시키는 열선코일;A heating coil installed in the heating coil and generating heat;
    상기 열선코일의 절연을 위해 상기 열선핀의 상단에 설치되는 열선 애자; 및A heating wire insulator installed on an upper end of the heating wire fin to insulate the heating coil; And
    일단은 상기 열선 애자의 내부로 삽입되어 상기 열선코일과 연결되고, 타단은 전원공급장치와 연결되어 상기 열선코일에 전원을 공급하는 열선 전선;을 포함하는 것을 특징으로 하는 볼스크류를 구비한 공작기계의 열변위 방지장치.One end is inserted into the hot wire insulator and is connected to the hot wire coil, and the other end is connected to a power supply device and a hot wire wire for supplying power to the hot wire coil. Thermal displacement prevention device.
  3. 제2항에 있어서,The method of claim 2,
    상기 제어유닛은,The control unit,
    상기 온도센서에서 측정된 베어링의 온도를 저장하는 온도저장부;A temperature storage unit for storing the temperature of the bearing measured by the temperature sensor;
    상기 베어링의 기설정 온도가 저장된 메모리부; 및A memory unit in which a predetermined temperature of the bearing is stored; And
    상기 온도저장부에 저장된 베어링의 측정온도와 상기 메모리부에 저장된 온도를 비교하여 상기 전원공급장치의 온/오프(on/off)를 제어하는 제어부;를 포함하는 것을 특징으로 하는 볼스크류를 구비한 공작기계의 열변위 방지장치.And a controller configured to control the on / off of the power supply device by comparing the measured temperature of the bearing stored in the temperature storage unit with the temperature stored in the memory unit. Heat displacement prevention device of machine tool.
  4. 온도센서에 의해 베어링의 온도를 측정하는 단계;Measuring the temperature of the bearing by a temperature sensor;
    상기 측정된 베어링의 온도를 온도저장부로 전송하는 단계;Transmitting the measured temperature of the bearing to a temperature storage unit;
    메모리부에 저장된 상기 베어링의 기설정 온도와 상기 온도저장부에 저장된 베어링의 측정온도를 비교하는 단계; 및Comparing a preset temperature of the bearing stored in a memory unit with a measured temperature of the bearing stored in the temperature storage unit; And
    상기 비교된 온도에 따라 전원공급장치의 온/오프(on/off)를 제어하는 단계;로 이루어지는 것을 특징으로 하는 볼스크류를 구비한 공작기계의 열변위 방지방법.Controlling the on / off of the power supply according to the compared temperature; and a method for preventing thermal displacement of a machine tool having a ball screw.
PCT/KR2013/008854 2012-10-16 2013-10-04 Thermal displacement prevention device and thermal displacement prevention method for machine tool having ball screw WO2014061930A1 (en)

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KR20140049153A (en) 2014-04-25
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KR101905087B1 (en) 2018-10-08

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