KR100740776B1 - Ball screw support part cooling apparatus for machine - Google Patents

Ball screw support part cooling apparatus for machine Download PDF

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Publication number
KR100740776B1
KR100740776B1 KR1020060054602A KR20060054602A KR100740776B1 KR 100740776 B1 KR100740776 B1 KR 100740776B1 KR 1020060054602 A KR1020060054602 A KR 1020060054602A KR 20060054602 A KR20060054602 A KR 20060054602A KR 100740776 B1 KR100740776 B1 KR 100740776B1
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KR
South Korea
Prior art keywords
ball screw
screw shaft
bearing
housing
coupled
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KR1020060054602A
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Korean (ko)
Inventor
유근희
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두산인프라코어 주식회사
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Priority to KR1020060054602A priority Critical patent/KR100740776B1/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
    • 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
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
    • 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
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/46—Movable or adjustable work or tool supports using particular mechanisms with screw pairs
    • 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
    • B23Q11/0003—Arrangements for preventing undesired thermal effects on tools or parts of the machine
    • 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
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
    • B23Q11/127—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling motors or 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

A ball screw support part cooling apparatus for machine is provided to prevent a balls screw shaft from being deformed and a bearing of being broken, and to restrict thermal expansion of a ball screw nut. In a ball screw support part cooling apparatus for machine(10), the machine includes a feeding member(14) having a ball screw nut(12), a longitudinal ball screw shaft(16) horizontally disposed in the lower side of the feeding member, and a ball screw nut fastened to the ball screw shaft. A driving motor(18) is provided to an end of the ball screw shaft to transmit a rotation force, and bearings(20A,20B) are coupled with both ends of the ball screw shaft to prevent the ball screw shaft from vibrating while being guided. A housing(21) surrounds the outer circumference of the bearing, respective fixing members(23) coupled with a main body(A) closely contact lateral sides of the housing, and any one of the fixing members is coupled with the housing. An electronic cooling module(24) having a plurality of radiating fins(22) is fixed on the outer circumference of the housing.

Description

공작기계의 볼 스크류 지지부 냉각구조{Ball Screw Support Part Cooling Apparatus for Machine}Ball Screw Support Part Cooling Apparatus for Machine

도 1은 본 발명에 대한 공작기계의 볼 스크류 지지부 냉각구조를 보여주는 요부도면이다. 1 is a main view showing a ball screw support cooling structure of a machine tool according to the present invention.

도 2는 도 1의 요부를 확대하여 부여주는 도면이다.FIG. 2 is an enlarged view of the main portion of FIG. 1.

<도면의 주요 부분에 대한 부호의 설명> <Explanation of symbols for main parts of the drawings>

10 : 공작기계 12 : 볼 스크류 너트10 machine tool 12 ball screw nut

14 : 이송부재 16 : 볼 스크류 샤프트14 transfer member 16 ball screw shaft

18 : 구동모터 20A,20B : 베어링18: drive motor 20A, 20B: bearing

21 : 하우징 22 : 방열날개21 housing 22 heat dissipation wing

23 : 고정부재 24 : 전자냉각모듈23: fixing member 24: electronic cooling module

본 발명은 공작기계의 볼 스크류 지지부 냉각구조에 관한 것으로, 더욱 상세하게는 볼 스크류 샤프트의 회전시에 베어링에서 발생 되는 열을 신속히 방출하는 새로운 타입의 냉각구조를 채용함으로써, 볼 스크류 샤프트를 따라 이동하게 되는 볼 스크류 너트와 볼 스크류 샤프트 그리고 베어링 등에 대한 열 변형 및 그에 따른 파손이 방지되도록 하고, 아울러 볼 스크류 샤프트의 정렬도를 유지시킬 수 있도록 한 것이다.The present invention relates to a cooling structure of a ball screw support of a machine tool, and more particularly, by adopting a new type of cooling structure that quickly releases heat generated from a bearing when the ball screw shaft rotates, thereby moving along the ball screw shaft. The heat screw and the resulting damage to the ball screw nut and ball screw shaft and the bearing is to be prevented, and also to maintain the alignment of the ball screw shaft.

일반적으로, 산업현장에서 사용되고 있는 공작기계에는 공구나 가공물을 원하는 위치로 직선 이동을 시키기 위하여 이송부재(예를 들면, 공구대, 공작테이블, 이송대)와 연동하도록 구비되는 볼 스크류 너트가 길이를 가진 볼 스크류 샤프트에 체결되어 있다.In general, a machine tool used in an industrial field is provided with a ball screw nut provided to interlock with a conveying member (for example, a tool rest, a work table, a conveyance stand) in order to linearly move a tool or a workpiece to a desired position. It is fastened to the ball screw shaft.

또한, 상기 볼 스크류 샤프트의 일단에는 회전력을 제공하는 구동모터와 연동하도록 연결되어 있으며, 상기 볼 스크류 샤프트의 양단부에는 볼 스크류 샤프트의 회전시, 볼 스크류 샤프트의 흔들림을 방지하면서 동시에 회전을 가이드 하는 베어링이 각각 결합 되는 구조로 갖추어져 있다. In addition, one end of the ball screw shaft is connected to the drive motor for providing a rotational force, and both ends of the ball screw shaft to prevent the shaking of the ball screw shaft during rotation of the ball screw shaft, at the same time to guide the rotation It is equipped with the structure that each is combined.

따라서, 상기 구동모터의 구동에 따라 회전력이 발생되면, 그 회전력이 볼 스크류 샤프트로 전달되어 볼 스크류 샤프트가 회전을 하게 되고, 그 볼 스크류 샤프트의 회전방향에 따라서 볼 스크류 너트가 축방향으로 이동하여 궁극적으로 이송부재가 연동하게 된다.Therefore, when a rotational force is generated according to the driving of the drive motor, the rotational force is transmitted to the ball screw shaft to rotate the ball screw shaft, the ball screw nut is moved in the axial direction according to the rotation direction of the ball screw shaft Ultimately, the transfer member is interlocked.

그런데, 위와 같은 구조에서, 볼 스크류 샤프트가 고속회전을 하게 되면, 베 어링의 내부에 열이 발생하게 되고, 이와 같이 발생하게 되는 열로 인해 베어링은 고온을 형성하게 된다. However, in the above structure, when the ball screw shaft is rotated at a high speed, heat is generated in the bearing, and the bearing generates a high temperature due to the heat generated in this way.

위와 같이 베어링이 고온을 형성하게 되면, 열전달에 의해 볼 스크류 너트와 볼 스크류 샤프트 그리고 베어링은 열 변형을 일으키게 되어, 볼 스크류 샤프트의 정렬도가 떨어져 정확한 수치가공이 어렵고, 또한 열거된 부품에 대하여 파손발생 및 사용수명의 저하되는 문제가 있다.When the bearing forms a high temperature as described above, the heat transfer causes the ball screw nut, the ball screw shaft and the bearing to deform the heat, so that the alignment of the ball screw shaft is poor, which makes it difficult to precisely machine and damage the listed parts. There is a problem that the generation and service life is reduced.

또한, 위와 같이 발생되는 열에 의하여 볼 스크류 너트 및 베어링의 내부에 주입되어 있는 윤활유가 타면서 굳어지거나 혹은 점차 없어지게 됨으로써, 동작상에 오류가 발생하게 되고, 이러한 문제가 발생하지 않도록 하기 위하여 작업자가 윤활유를 수시로 주입하여야 하는 번거로움도 있다.In addition, as the lubricating oil injected into the ball screw nut and the bearing is hardened or gradually disappeared by the heat generated as described above, an error occurs in operation, so that the operator does not have such lubricating oil. There is also the hassle of having to inject from time to time.

본 발명은 상기와 같은 문제점을 해소하기 위해 발명된 것으로, 볼 스크류 샤프트의 회전시, 베어링에서 발생 되는 열을 열전현상을 이용하여 신속히 방출시켜 냉각시킴으로써, 볼 스크류 너트와 볼 스크류 샤프트 그리고 베어링에 대한 열변형을 방지하고, 아울러 볼 스크류 샤프트의 정렬도가 떨어지는 것을 방지하도록 하는 점에 그 목적이 있다.The present invention has been invented to solve the above problems, and when the ball screw shaft rotates, the heat generated from the bearing is quickly released by using a thermoelectric phenomenon to cool the ball screw nut, the ball screw shaft and the bearing The purpose is to prevent thermal deformation and to prevent the ball screw shaft from falling in alignment.

상기와 같은 목적을 달성하기 위한 본 발명은, 구동모터와 연동하도록 연결되는 볼 스크류 샤프트의 양편에 베어링이 각각 결합 되는 상태로 구비되고, 상기 베어링과 베어링 사이에는 이송부재에 구비되는 볼 스크류 너트가 볼 스크류 샤프트에 체결되어, 볼 스크류 샤프트의 회전방향에 따라 볼 스크류 너트가 축 방향으로 이동하게 되는 공작기계에 있어서, 상기 베어링의 외면에 일부 감싸는 형태로 면 밀착되는 하우징; 상기 하우징의 양 측면에 각각 밀착되도록 상기 볼 스크류 샤프트에 관통 형태로 결합 되면서 본체와 체결되는 고정부재; 상기 하우징의 외면에 구비되어 베어링에서 발생 되는 열을 방출하며 전원공급부재로부터 전원을 공급받도록 연결된 전자냉각모듈; 상기 전자냉각모듈의 외면에 서로 간격을 가지고 구비되는 복수 개의 방열날개; 로 구성되어 있어, 상기 전자냉각모듈은 외면과 내면 간에 형성되는 온도차이에 의한 열전현상을 이용하여 베어링에서 발생하는 열이 방출되도록 하는 공작기계의 볼 스크류 지지부 냉각구조에 기술적 특징이 있다. The present invention for achieving the above object is provided in a state in which the bearings are respectively coupled to both sides of the ball screw shaft connected to interlock with the drive motor, a ball screw nut provided in the transfer member between the bearing and the bearing In the machine tool is fastened to the ball screw shaft, the ball screw nut is moved in the axial direction in accordance with the rotation direction of the ball screw shaft, the machine tool which is in close contact with the surface in the form of partially wrapped on the outer surface of the bearing; A fixing member coupled to the main body while being coupled to the ball screw shaft in a penetrating manner so as to be in close contact with both sides of the housing; An electronic cooling module provided on an outer surface of the housing to discharge heat generated from a bearing and to receive power from a power supply member; A plurality of heat dissipation blades provided on the outer surface of the electronic cooling module with a distance from each other; The electronic cooling module has a technical feature in the ball screw support cooling structure of the machine tool to allow the heat generated from the bearing to be released by using a thermoelectric phenomenon due to the temperature difference formed between the outer surface and the inner surface.

이하, 첨부된 예시도면을 참조하여 본 발명의 바람직한 실시 예를 상세하게 설명한다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 대한 공작기계의 볼 스크류 지지부 냉각구조를 보여주는 요부도면이고, 도 2는 도 1의 요부를 확대하여 부여주는 도면이다.1 is a main view showing a ball screw support cooling structure of the machine tool according to the present invention, Figure 2 is an enlarged view of the main portion of FIG.

첨부된 도면에서 보듯이, 공작기계(10)에는 볼 스크류 너트(12)를 구비하는 이송부재(14)와, 그 하부에 길이를 가지는 볼 스크류 샤프트(16)가 수평으로 배치되어 있으며, 볼 스크류 샤프트(16)에는 앞서 언급된 볼 스크류 너트(12)가 체결되어 있다.As shown in the accompanying drawings, the machine tool 10 has a conveying member 14 having a ball screw nut 12, and a ball screw shaft 16 having a length at the bottom thereof is arranged horizontally, the ball screw The shaft 16 is fastened with the aforementioned ball screw nut 12.

그리고, 상기 볼 스크류 샤프트(16)의 일단에는 종래와 같이 구동모터(18)가 배치되면서 회전력이 전달될 수 있도록 연결되어 있고, 상기 볼 스크류 샤프트(16) 의 양단부분에는 볼 스크류 샤프트(16)의 회전시 흔들림을 방지하면서 회전을 가이드하기 위한 베어링(20A,20B)이 각각 결합되어 있다.In addition, one end of the ball screw shaft 16 is connected to allow the rotational force to be transmitted while the driving motor 18 is disposed as in the prior art, and both ends of the ball screw shaft 16 have the ball screw shaft 16. The bearings 20A and 20B for guiding the rotation are respectively coupled while preventing the shaking during the rotation.

위와 같은 구조에서 본 발명은, 상기 베어링(20A)의 외면에 하우징(21)이 원주를 따라 일부 감싸는 상태로 밀착되어 있고, 볼 스크류 샤프트(16)가 관통되는 상태로 본체(A)에 체결된 각각의 고정부재(23)가 상기 하우징(21)의 양측면에 밀착되어 있으며, 이 고정부재(23) 중 어느 하나의 고정부재(23)와 하우징(21) 간에 서로 체결되는 구조로 도시되어 있다. In the structure as described above, the present invention, the housing 21 is in close contact with the outer circumference of the bearing (20A) in a part surrounding the circumference, the ball screw shaft 16 is fastened to the main body (A) in the state penetrated Each holding member 23 is in close contact with both sides of the housing 21, it is shown in a structure that is fastened to each other between the holding member 23 and the housing 21 of any one of the holding members (23).

그러나, 상기 하우징(21)과 고정부재(23)간에 체결을 통하여 하우징(21)을 고정할 필요는 없다, 예컨대 상기 고정부재(23)의 양편 밀착만으로 하우징(21)이 고정되는 것도 본 발명에 포함될 것이다. However, it is not necessary to fix the housing 21 through fastening between the housing 21 and the fixing member 23. For example, the housing 21 is fixed only by close contact with both sides of the fixing member 23. Will be included.

그리고, 상기 하우징(21)의 외면에는 복수개의 방열날개(22)를 구비한 전자냉각모듈(24)이 고정되는 상태로 갖추어져 있는데, 이때 상기 방열날개(22)는 전도성이 뛰어난 동 재질의 사용이 바람직하다. 그러나 상기 방열날개(22)가 반드시 동 재질로 한정될 필요는 없으며, 전도성이 뛰어난 재질이라면 어떠한 재질의 사용하여도 무방할 것이다.In addition, the outer surface of the housing 21 is provided with a state in which the electronic cooling module 24 having a plurality of heat dissipation blades 22 is fixed. In this case, the heat dissipation wing 22 is made of copper material having excellent conductivity. desirable. However, the heat dissipation wing 22 does not necessarily need to be limited to the same material, and any material may be used as long as the material has excellent conductivity.

그리고, 상기 전자냉각모듈(24)로부터 인출된 (+,-)전선은 정류기와 연결되며, 이 정류기는 전원공급부재와 전기적으로 연결되어 있다. And, the (+,-) wire drawn out from the electronic cooling module 24 is connected to the rectifier, the rectifier is electrically connected to the power supply member.

따라서, 상기 구동모터(18)가 동작 되면, 볼 스크류 샤프트(16)가 회전을 하게 되는데, 이때 상기 볼 스크류 샤프트(16)의 회전을 가이드 하는 베어링(20A)은 일반적으로 사용되는 볼 베어링이므로, 베어링(20A)의 내부에 구비된 볼의 회전마 찰에 의해 열이 발생하여 고온을 형성하게 된다. Therefore, when the drive motor 18 is operated, the ball screw shaft 16 is rotated, wherein the bearing 20A for guiding the rotation of the ball screw shaft 16 is a ball bearing that is generally used, Heat is generated by the rotational friction of the ball provided in the bearing 20A to form a high temperature.

그리고, 위와 같이 베어링(20A)에서 발생 되는 열은 볼 스크류 샤프트(16)와 볼 스크류 너트(12)로 전달되어 고온을 형성하면서 점차 열팽창을 하게 된다. Then, the heat generated in the bearing 20A as described above is transferred to the ball screw shaft 16 and the ball screw nut 12 to form a high temperature gradually to thermal expansion.

이때, 본 발명에서는 상기 전원공급부재로부터 인가되는 직류전압을 전자냉각모듈(24)에 흐르게 하여 전자냉각모듈(24)의 외면이 내면보다 낮은 온도를 형성하도록 한다. 이러한 전자냉각모듈(24)은 보편적으로 사용되고 있는 열전반도체이므로 내부 구조에 대해서는 생략하기로 한다.At this time, in the present invention, the DC voltage applied from the power supply member flows to the electronic cooling module 24 so that the outer surface of the electronic cooling module 24 forms a lower temperature than the inner surface. Since the electronic cooling module 24 is a commonly used thermoelectric semiconductor, an internal structure thereof will be omitted.

이와 같이, 상기 전자냉각모듈(24)의 외면과 내면간에 온도차가 발생되면, 열 흐름의 특성상 고온에서 저온으로 열이 이동하는 열전현상이 작용하여, 고온을 형성하는 볼 스크류 샤프트(16), 베어링(20A) 등에 형성되는 고온의 열이 방열날개(22) 측으로 전달되게 되며, 그에 따라 신속히 열이 외부로 방출됨으로써, 볼 스크류 너트(12), 볼 스크류 샤프트(16), 베어링(20A)에 형성되는 열을 신속히 냉각시킬 수 있게 된다. As such, when a temperature difference is generated between the outer surface and the inner surface of the electronic cooling module 24, a thermoelectric phenomenon in which heat moves from a high temperature to a low temperature due to the characteristics of the heat flow acts to form a high temperature. The high temperature heat formed in the 20A or the like is transferred to the heat dissipation blade 22 side, and thus heat is quickly released to the outside, thereby forming the ball screw nut 12, the ball screw shaft 16, and the bearing 20A. It becomes possible to cool the heat quickly.

따라서, 본 발명의 공작기계의 볼 스크류 지지부 냉각구조를 사용하게 되면, 위에서 설명된 바와 같이 전자냉각모듈(24)이 발휘하는 열전현상으로 인해 열이 신속히 외부로 방출됨으로써, 종래에 문제점으로 제기된 볼 스크류 너트(12)의 과대한 열 팽창과 볼 스크류 샤프트(16)의 열 변형 및 베어링(20A)의 파손 등이 방지되고, 그에 따라 볼 스크류 샤프트(16)의 높은 정렬도가 유지되면서 아울러 각 부품의 사용수명을 연장할 수 있게 된다.Therefore, when the ball screw support cooling structure of the machine tool of the present invention is used, heat is rapidly released to the outside due to the thermoelectric phenomenon exerted by the electronic cooling module 24 as described above. Excessive thermal expansion of the ball screw nut 12 and thermal deformation of the ball screw shaft 16 and breakage of the bearing 20A are prevented, thereby maintaining a high degree of alignment of the ball screw shaft 16 while The service life of the parts can be extended.

앞서 설명에서는 볼 스크류 샤프트(16)의 양단에 결합되는 한쌍의 베어 링(20A,20B) 중 어느 하나의 베어링(20A)에 전자냉각모듈(24)인 열전반도체가 채용되는 것으로 설명하였으나, 이는 본 발명 대한 일 예를 설명하기 위한 것일 뿐, 이러한 구조로 한정될 필요는 없다. 도면에서 보듯이 상기 베어링(20A)과 대응하는 타측 베어링(20B)부분에도 앞서 설명된 전자냉각모듈(24)이 채용되는 것도 본 발명에 포함될 것이다. In the above description, the thermoelectric semiconductor, which is the electronic cooling module 24, is employed in one of the bearings 20A of the pair of bearings 20A and 20B coupled to both ends of the ball screw shaft 16. It is only for explaining an example of the invention, it does not need to be limited to this structure. As shown in the figure it will be included in the present invention that the above-described electronic cooling module 24 is also employed in the bearing 20A and the other bearing 20B.

위와 같이 본 발명은 전자냉각모듈을 채용한 열전현상을 통해 발생된 열을 신속히 방출시키는 새로운 타입의 냉각구조에 의해 볼 스크류 샤프트의 변형과 베어링의 파손을 방지하고, 나아가 볼 스크류 너트의 열팽창을 억제하여 파손이 발생하지 않도록 하는 효과가 있다. As described above, the present invention prevents the deformation of the ball screw shaft and the breakage of the bearing by a new type of cooling structure which quickly releases heat generated through the thermoelectric phenomenon employing the electronic cooling module, and further suppresses the thermal expansion of the ball screw nut. There is an effect that does not cause damage.

위와 같은 효과에 의해 부품의 사용수명을 연장하고, 윤활유의 주기적인 공급에 따른 번거로움과 불편함을 해소할 수 있는 효과도 기대할 수 있다.By the above effects, it is also possible to extend the service life of the parts, and can also expect the effect of eliminating the inconvenience and inconvenience caused by the periodic supply of lubricating oil.

Claims (2)

구동모터와 연동하도록 연결되는 볼 스크류 샤프트의 양편에 베어링이 각각 결합 되고, 상기 베어링과 베어링 사이에는 이송부재에 구비되는 볼 스크류 너트가 볼 스크류 샤프트에 체결되어 볼 스크류 샤프트의 회전방향에 따라 볼 스크류 너트가 축 방향으로 이동하게 되는 공작기계에 있어서, Bearings are respectively coupled to both sides of the ball screw shaft connected to the driving motor, and a ball screw nut provided on the transfer member is fastened to the ball screw shaft between the bearings and the bearings so that the ball screw is rotated according to the rotational direction of the ball screw shaft. In a machine tool in which the nut moves in the axial direction, 상기 베어링의 외면에 일부 감싸는 형태로 면 밀착되는 하우징;A housing in close contact with the outer surface of the bearing in a form of wrapping; 상기 하우징의 양 측면에 각각 밀착되도록 상기 볼 스크류 샤프트에 관통 형태로 결합 되면서 본체와 체결되는 고정부재; A fixing member coupled to the main body while being coupled to the ball screw shaft in a penetrating manner so as to be in close contact with both sides of the housing; 상기 하우징의 외면에 구비되어 베어링에서 발생 되는 열을 방출하며 전원공급부재로부터 전원을 공급받도록 연결된 전자냉각모듈;An electronic cooling module provided on an outer surface of the housing to discharge heat generated from a bearing and to receive power from a power supply member; 상기 전자냉각모듈의 외면에 서로 간격을 가지고 구비되는 복수 개의 방열날개; 로 구성되어 있어,A plurality of heat dissipation blades provided on the outer surface of the electronic cooling module with a distance from each other; It consists of, 상기 전자냉각모듈은 외면과 내면 간에 형성되는 온도차이에 의한 열전현상을 이용하여 베어링에서 발생하는 열이 방출되도록 하는 것을 특징으로 하는 공작기계의 볼 스크류 지지부 냉각구조.The electronic cooling module cooling structure of the ball screw support of the machine tool, characterized in that the heat generated from the bearing is released by using a thermoelectric phenomenon due to the temperature difference formed between the outer surface and the inner surface. 삭제delete
KR1020060054602A 2006-06-17 2006-06-17 Ball screw support part cooling apparatus for machine KR100740776B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11287306A (en) 1998-03-31 1999-10-19 Koyo Mach Ind Co Ltd Cooling system of feed screw
KR20020036898A (en) * 2000-11-11 2002-05-17 이성하 thermoelectric use of a oil cooling unit
KR100570715B1 (en) 2005-03-30 2006-04-24 (주)아이에스서플라이 Cabinet cooling system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11287306A (en) 1998-03-31 1999-10-19 Koyo Mach Ind Co Ltd Cooling system of feed screw
KR20020036898A (en) * 2000-11-11 2002-05-17 이성하 thermoelectric use of a oil cooling unit
KR100570715B1 (en) 2005-03-30 2006-04-24 (주)아이에스서플라이 Cabinet cooling system

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