KR0121403Y1 - Main spindle of cutting machine - Google Patents

Main spindle of cutting machine

Info

Publication number
KR0121403Y1
KR0121403Y1 KR2019940032253U KR19940032253U KR0121403Y1 KR 0121403 Y1 KR0121403 Y1 KR 0121403Y1 KR 2019940032253 U KR2019940032253 U KR 2019940032253U KR 19940032253 U KR19940032253 U KR 19940032253U KR 0121403 Y1 KR0121403 Y1 KR 0121403Y1
Authority
KR
South Korea
Prior art keywords
spindle
spindle motor
motor
present
high speed
Prior art date
Application number
KR2019940032253U
Other languages
Korean (ko)
Other versions
KR960016540U (en
Inventor
박수천
Original Assignee
김재복
주식회사기아기공
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김재복, 주식회사기아기공 filed Critical 김재복
Priority to KR2019940032253U priority Critical patent/KR0121403Y1/en
Publication of KR960016540U publication Critical patent/KR960016540U/en
Application granted granted Critical
Publication of KR0121403Y1 publication Critical patent/KR0121403Y1/en

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Classifications

    • 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
    • B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical 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
    • 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
    • B23Q2705/00—Driving working spindles or feeding members carrying tools or work
    • B23Q2705/02—Driving working spindles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

본 고안은 고속회전하는 스핀들을 갖는 공작기계의 주축에 관한 것으로, 종래의 주축은 하우징(33)의 일측에 스핀들모터(31)가 설치되기 때문에 스핀들(32)의 분당 회전수(RPM)가 제한적인 문제가 있었을 뿐 아니라 스핀들모터(31)의 RPM을 고속으로 하는 경우는 발열과 소음을 없애기 위해 별도의 부가적인 장치가 필요하였고, 스핀들모터(31)의 간섭으로 축증심을 관통하는 냉각구조를 마련할 수 없는 문제가 있었던 바, 헤드프레임(10)의 내부에 설치되는 스핀들(12)의 외주에 직접 스핀들모터(11)를 설치하고, 그 둘레에 공기통로(14)와 오일통로(15)를 마련한 것을 특징으로 하는 본 고안에 의하면 별도의 부가적인 장치를 구비하지 않고서도 스핀들(12)의 회전수를 높일 수 있게 되고, 고속회전으로 인한 발열과 소음을 현저하게 감소시킬 수 있게 되며, 축중심에 스핀들모터(11)의 간섭을 배제하여 축중심을 관통하는 냉각구조를 설비할 수 있게 된다.The present invention relates to a spindle of a machine tool having a spindle that rotates at high speed, and the conventional spindle is limited in the number of revolutions per minute (RPM) of the spindle 32 because the spindle motor 31 is installed on one side of the housing 33. Not only there was a problem, but when the RPM of the spindle motor 31 at a high speed, an additional device was required to eliminate heat and noise, and a cooling structure penetrating the shaft core due to the interference of the spindle motor 31 was provided. Since there was a problem that cannot be done, the spindle motor 11 is installed directly on the outer circumference of the spindle 12 installed inside the head frame 10, and the air passage 14 and the oil passage 15 are circumferentially installed. According to the present invention, it is possible to increase the number of revolutions of the spindle 12 without providing an additional device, and to significantly reduce heat and noise due to high-speed rotation. on By eliminating the interference of the spindle motor 11, it is possible to install a cooling structure penetrating the center of the shaft.

Description

공작기계의 주축Spindle of a machine tool

제1도는 본 고안의 한 실시예의 요부 종단면도1 is a longitudinal sectional view of main parts of one embodiment of the present invention;

제2도는 종래의 공작기계 주축의 요부 종단면도2 is a longitudinal sectional view showing main parts of a conventional machine tool spindle.

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

10:헤드프레임 11:스핀들모터10: Head frame 11: Spindle motor

11a:로터 11b:스테이터11a: rotor 11b: stator

12:스핀들 14:공기통로12: spindle 14: air passage

15:오일통로15: Oil passage

본 고안은 고속회전하는 스핀들을 갖는 공작기계의 주축에 관한 것으로, 더 자세하게는 스핀들의 고속회전으로 인한 발열이나 소음등을 현저하게 저감할 수 있도록 개선한 것에 관한 것이다.The present invention relates to a main shaft of a machine tool having a spindle that rotates at high speed, and more particularly, to an improvement that can significantly reduce heat generation or noise due to the spindle rotating at a high speed.

종래에 있어서 회전하는 스핀들을 갖는 공작기계의 주축은 제2도와 같이 스핀들모터(31)가 스핀들(32)이 내장되는 하우징(33)의 일측에 설치되고, 내선단에 절삭공구(미도시)의 클램프(34)를 지지하는 콜렛(35)이 장착된 스핀들(32)은 그 후단부 외주에 설치된 커플링(36)과 결합키(37)를 통해 스핀들모터축(38)에 결합되는 것이 주로 사용되었다.In the related art, the main shaft of a machine tool having a rotating spindle is provided with a spindle motor 31 on one side of a housing 33 in which the spindle 32 is embedded, as shown in FIG. 2, and at the inner end of the cutting tool (not shown). The spindle 32 having the collet 35 supporting the clamp 34 is mainly used to be coupled to the spindle motor shaft 38 through a coupling 36 and a coupling key 37 installed at the outer periphery of the rear end thereof. It became.

상기 종래의 주축은 스핀들모터(31)가 회전하게 되면 커플링(36)과 결합키(37)를 통해 회전력이 전달되는 스핀들(32)이 회전하게 되며, 스핀들(32)의 외부에 조립된 피스톤(39) 및 시프터(40), 그리고 스핀들(32)의 내부에 설치된 드로우바(41), 스프링(42), 콜렛(35) 등을 유압으로 작동시켜 공구의 클램핑 및 언클램핑을 하게 된다.When the spindle motor 31 rotates, the conventional main shaft rotates the spindle 32 through which the rotational force is transmitted through the coupling 36 and the coupling key 37, and a piston assembled to the outside of the spindle 32. The 39 and the shifter 40 and the draw bar 41, the spring 42, the collet 35, etc. installed in the spindle 32 are hydraulically operated to clamp and unclamp the tool.

상기 종래의 주축은 하우징(33)의 외측에 스핀들모터(31)가 부착되기 때문에 스핀들(32)의 분당회전수(RPM)가 최대 6,000으로 제한되는 문제가 있으며, 만약 스핀들모터(31)의 분당회전수가 15,000∼20,000 정도의 고속인 경우에는 발열과 소음이 심하게 발생되므로 이를 막기 위해서는 별도의 부가적인 장치가 필요하게 되는 문제가 있었다.The conventional main shaft has a problem that the number of revolutions per minute (RPM) of the spindle 32 is limited to a maximum of 6,000 because the spindle motor 31 is attached to the outside of the housing 33, and if the spindle motor 31 per minute If the rotational speed is about 15,000 ~ 20,000 high speed heat and noise is badly generated, there was a problem that a separate additional device is required to prevent this.

본 고안은 상기 종래의 문제점을 감안하여 안출한 것이며, 그 목적이 별도의 부가적인 장치없이 스핀들을 고속으로 회전시킬 수 있도록 함은 물론 그에 따른 발열과 소음을 효과적으로 저감시킬 수 있도록 하는 공작기계의 주축을 제공하는 데에 있는 것이다.The present invention has been devised in view of the above-described problems, and its purpose is to allow the spindle to rotate at high speed without additional equipment, as well as to reduce heat and noise accordingly. It is in providing.

본 고안은 상기의 목적을 달성하기 위하여 스핀들의 외주에 스핀들모터를 설치하는 것 등을 특징으로 하며, 이하 그 구체적인 내용을 첨부도면에 도시한 한 실시예를 통하여 더욱 자세히 설명하면 다음과 같다.The present invention is characterized in that the spindle motor is installed on the outer periphery of the spindle to achieve the above object, and the following will be described in more detail through one embodiment shown in the accompanying drawings.

즉, 본 고안은 제1도와 같이 헤드프레임(10)의 내부에 스핀들(12)이 설치되고, 스핀들(12)의 선단에 콜렛을 통해 클램프(13)가 결합되는 것에 있어서, 상기 스핀들(12)의 외주 중앙에 로터(11a)와 스테이터(11b)를 구비하는 스핀들모터(11)를 설치하고, 이 스핀들모터(11)의 둘레에 공기통로(14)와 오일통로(15)를 마련하여서 되는 것이다.That is, according to the present invention, the spindle 12 is installed inside the head frame 10 as shown in FIG. 1, and the clamp 12 is coupled to the tip of the spindle 12 through a collet. The spindle motor 11 is provided with the rotor 11a and the stator 11b in the center of the outer periphery, and the air passage 14 and the oil passage 15 are provided around the spindle motor 11. .

도시된 실시예는 스핀들(12)의 외주 중앙에 스핀들모터(11)의 로터(11a)가 열융착되고, 스테이터(11b)의 외주에 결합된 헤드프레임(10)의 요입부에 오일통로(15)가 형성되며, 헤드프레임(10)의 내하부에 공기통로(14)가 형성되고, 이 공기통로(14)에 덕트(미도시)와 송풍팬(미도시)가 결합되는 형태를 갖는다.In the illustrated embodiment, the oil passage 15 of the concave portion of the head frame 10 coupled to the outer circumference of the stator 11b is thermally fused to the rotor 11a of the spindle motor 11 at the center of the outer circumference of the spindle 12. ) Is formed, and an air passage 14 is formed in the lower portion of the head frame 10, and a duct (not shown) and a blowing fan (not shown) are coupled to the air passage 14.

한편 본 고안에 있어서 공구의 클램핑과 언클램핑을 종래와 마찬가지로 피스톤과 칼라(16), 스프링(17), 슬리브(18) 및 로드(20) 등에 의해 이루어진다.Meanwhile, in the present invention, clamping and unclamping of the tool are performed by the piston and the collar 16, the spring 17, the sleeve 18, the rod 20, and the like as in the prior art.

상기와 같이 구성된 본 고안에 있어서는 헤드프레임(10)에 내장된 스핀들모터(11)에 전원이 공급되면 로터(11a)와 함께 스핀들(12)이 회전하게 되며, 고속회전에 의해 발생되는 열은 송풍팬과 덕트를 통해 공기통로(14)로 유입되는 공기와 스테이터(11b)의 외부에 마련된 오일통로(15)로 공급되는 오일에 의해 냉각된다.In the present invention configured as described above, when power is supplied to the spindle motor 11 embedded in the head frame 10, the spindle 12 rotates together with the rotor 11a, and heat generated by high-speed rotation is blown. It is cooled by the air flowing into the air passage 14 through the fan and the duct and the oil supplied to the oil passage 15 provided outside the stator 11b.

한편 절삭가공시에의 절삭유는 스핀들(12)의 내부에 설치되는 로드(20)와 드로우바(미도시), 노즐(미도시)를 경유하여 공작물에 급유된다.On the other hand, the cutting oil at the time of cutting is lubricated to the workpiece via a rod 20, a draw bar (not shown), and a nozzle (not shown) installed inside the spindle 12.

이상과 같은 본 고안에 있어서는 헤드프레임(10)에 내장된 스핀들모터(11)를 사용함으로써 별도의 부가적인 장치를 구비하지 않고서도 스핀들(12)의 분단회전수를 15,000∼20,000 정도로 높일 수 있게 되고, 커플링에 의한 회전이 아닌 관계로 소음을 현저하게 감소시킬 수 있게 되며, 스핀들모터(11)의 외측에 공기통로(14)와 오일통로(15)를 마련함으로써 고속회전으로 인한 발열을 냉각할 수 있게 될 뿐 아니라 축중심에 스핀들모터(11)를 포함한 다른 부재들의 간섭이 없게 되므로 축중심을 관통하는 냉각구조를 설비할 수 있게 되는 등의 효과를 얻을 수 있게 된다.In the present invention as described above, by using the spindle motor 11 embedded in the head frame 10, the divided rotation speed of the spindle 12 can be increased to about 15,000 to 20,000 without providing an additional device. The noise is significantly reduced due to the rotation of the coupling, and the air passage 14 and the oil passage 15 are provided outside the spindle motor 11 to cool the heat generated by the high speed rotation. In addition, since there is no interference of other members including the spindle motor 11 in the shaft center, the cooling structure penetrating the shaft center can be provided.

Claims (1)

헤드프레임(10)의 내부에 스핀들(12)이 설치되고, 스핀들(12)의 선단에 콜렛을 통해 클램프(13)가 결합되는 것에 있어서, 상기 스핀들(12)의 외주 중앙에 로터(11a)와 스테이터(11b)를 구비하는 스핀들모터(11)를 설치하고, 이 스핀들모터(11)의 둘레에 공기통로(14)와 오일통로(15)를 마련한 것을 특징으로 하는 공작기계의 주축.The spindle 12 is installed inside the head frame 10, and the clamp 13 is coupled to the distal end of the spindle 12 through a collet. The rotor 11a and the center of the outer periphery of the spindle 12 are connected to each other. A spindle shaft of a machine tool, comprising: a spindle motor (11) having a stator (11b), and an air passage (14) and an oil passage (15) provided around the spindle motor (11).
KR2019940032253U 1994-11-30 1994-11-30 Main spindle of cutting machine KR0121403Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019940032253U KR0121403Y1 (en) 1994-11-30 1994-11-30 Main spindle of cutting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019940032253U KR0121403Y1 (en) 1994-11-30 1994-11-30 Main spindle of cutting machine

Publications (2)

Publication Number Publication Date
KR960016540U KR960016540U (en) 1996-06-17
KR0121403Y1 true KR0121403Y1 (en) 1998-07-15

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KR2019940032253U KR0121403Y1 (en) 1994-11-30 1994-11-30 Main spindle of cutting machine

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100397973B1 (en) * 2000-12-19 2003-09-19 현대자동차주식회사 Spindle cooling device of machine tools
KR100397972B1 (en) * 2000-12-19 2003-09-13 현대자동차주식회사 Spindle cooling device of machine tools
KR100480940B1 (en) * 2002-11-12 2005-04-07 대우종합기계 주식회사 Bearing oil mist of main spindle and oil recoveriable lubrication device

Also Published As

Publication number Publication date
KR960016540U (en) 1996-06-17

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