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KR100876365B1 - Crankshaft Journal Dustproofing - Google Patents

Crankshaft Journal Dustproofing Download PDF

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Publication number
KR100876365B1
KR100876365B1 KR1020080047185A KR20080047185A KR100876365B1 KR 100876365 B1 KR100876365 B1 KR 100876365B1 KR 1020080047185 A KR1020080047185 A KR 1020080047185A KR 20080047185 A KR20080047185 A KR 20080047185A KR 100876365 B1 KR100876365 B1 KR 100876365B1
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South Korea
Prior art keywords
journal
crankshaft
vibration
rod
cylinder
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KR1020080047185A
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Korean (ko)
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추수욱
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추수욱
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Priority to KR1020080047185A priority Critical patent/KR100876365B1/en
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Priority to PCT/KR2009/001835 priority patent/WO2009142394A2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B23B5/18—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning crankshafts, eccentrics, or cams, e.g. crankpin lathes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2215/00—Details of workpieces
    • B23B2215/20—Crankshafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/16—Damping of vibrations
    • 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
    • B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

본 발명은 선반에서 크랭크 샤프트의 저널 부분을 선삭가공할 시 발생하는 진동을 방지할 수 있게 하는 요동형 방진구에 관한 것으로, 선반의 주축과 심압대에 고정된 저널의 외곽을 선회하는 저널에는 원주방향에서 3개로 분할되는 방진링을 결합볼트로 결합하여 고정하고, 방진링에는 일정각도범위 내에서 회동가능하게 3방향으로 결합된 로드와 실린더의 신축작용으로 선회하는 크랭크 샤프트를 지지할 수 있게 구성하여 실린더에 내장된 스프링 또는 유체에 의하여 크랭크 샤프트에서 발생하는 진동을 흡수할 수 있게 한 것을 특징으로 한다.The present invention relates to a rocking type vibration isolation device that can prevent the vibration generated when turning the journal portion of the crankshaft on the lathe, and the journal that orbits the outer periphery of the journal fixed to the main shaft and tailstock of the lathe The dustproof ring divided into three in the direction is fixed by coupling bolts, and the dustproof ring is capable of supporting the crankshaft that is pivoted by the elastic action of the rod and cylinder, which are coupled in three directions so as to be rotatable within a certain angle range. It is characterized in that to be able to absorb the vibration generated in the crankshaft by the spring or fluid built into the cylinder.

Description

크랭크 샤프트 저널가공용 방진구{Vibration absorber for crank shaft journal}Vibration absorber for crank shaft journal

본 발명은 크랭크 샤프트의 선삭가공시 크랭크 샤프트에서 발생하는 진동을 억제할 수 있게 하는 방진구에 관한 것이다.The present invention relates to an anti-vibration port that makes it possible to suppress vibration generated in the crankshaft during turning of the crankshaft.

일반적으로 길이가 긴 가공물을 선반에서 선삭가공할 경우에는 가공물의 자체중량에 의한 처짐현상이나 바이트에 의한 절삭저항에 의하여 가공물에 휨이 발생하고, 처짐이나 휨은 가공물의 회전에 의하여 진동을 발생시키므로 가공물을 진원단면을 갖도록 가공하기 위하여는 가공물의 중간에 가공물을 지지하여 진동을 억제할 수 있게 하는 방진구가 사용된다.In general, when turning a long workpiece on a lathe, warpage occurs in the workpiece due to deflection due to its own weight or cutting resistance due to a bite, and deflection or bending causes vibration due to the rotation of the workpiece. In order to process the workpiece to have a circular cross section, a vibration isolator for supporting the workpiece in the middle of the workpiece to suppress vibrations is used.

크랭크 샤프트는 회전중심을 지지하는 베어링 저널과 베어링 저널의 원주방향 외곽에서 피스톤의 콘로드와 연결되는 콘로드 저널이 베어링 저널을 중심으로 크게 선회하면서 회전하는 구성이므로 베어링 저널 또는 콘로드 저널을 가공코자 할 경우에는 회전중심이 고정되는 저널 이외의 선회하는 저널은 고정되는 회전중심 에서 크게 벗어난 상태에서 선회하므로 통상적인 방진구로는 지지할 수 없었다.The crankshaft is designed to process the bearing journal or the cone rod journal because the bearing journal supporting the center of rotation and the cone rod journal connected to the cone rod of the piston in the circumferential outside of the bearing journal rotate in a large pivot around the bearing journal. In this case, the rotating journal other than the journal in which the center of rotation is fixed is pivoted out of the fixed center of rotation, and thus, it cannot be supported by a conventional dustproof hole.

따라서 종래 크랭크 샤프트를 가공하고자 할 경우에는 도 6에 도시된 것과 같은 회전중심이 고정되는 저널에서 절삭공구와 접촉하는 반대측면에 반원상의 방진구를 설치하여 절삭저항에 의한 크랭크 샤프트의 휨을 방지하게 하여 진동의 발생을 억제할 수 있게 하였으나 회전중심의 외곽을 선회하는 저널의 원심력에 의하여 진동이 발생하지 않도록 하기 위하여는 크랭크 샤프트의 회전속도를 크게 할 수 없었다.Therefore, when the conventional crankshaft is to be processed, a semicircular dustproof hole is installed on the opposite side of the cutting tool in the journal in which the rotation center is fixed as shown in FIG. 6 to prevent bending of the crankshaft due to cutting resistance. Although it was possible to suppress the occurrence of vibration, the rotational speed of the crankshaft could not be increased in order to prevent the vibration from occurring due to the centrifugal force of the journal turning around the center of rotation.

본 발명은 크랭크 샤프트의 회전중심 외곽부를 선회하는 저널을 지지하는 방진구를 제공하여 원심력에 의한 진동발생을 억제할 수 있게 함으로써 크랭크 샤프트의 회전속도를 높여 가공시간을 단축할 수 있게 하는 것이다.The present invention provides a dustproof port for supporting a journal that pivots around the center of rotation of the crankshaft to suppress vibrations caused by centrifugal force, thereby increasing the rotational speed of the crankshaft and thus reducing machining time.

본 발명은 회전중심의 외곽을 선회하는 저널을 3개로 분할하여 결합할 수 있게 구성된 미끄럼 베어링 형태의 방진링으로 지지하고, 방진링은 3방향으로 각각 신축이 가능한 실린더와 로드로 고정하여 선회하는 저널을 신축가능한 실린더와 로드로 지지할 수 있게 구성한다.The present invention is supported by a sliding bearing type anti-vibration ring configured to be divided into three divided journals orbiting the outer center of the rotation center, the anti-vibration ring is fixed in three directions by a cylinder and a rod that can be rotated in the journal It is configured to be supported by a flexible cylinder and rod.

또한 방진링에서 저널과 접촉하는 면에는 PBC재질의 부싱을 개재하고 윤활유를 공급할 수 있게 하는 오일공급구조를 구비한다.In addition, the surface of the dustproof ring in contact with the journal is provided with an oil supply structure through which a bushing made of PBC material and supplying lubricant.

또한 방진링과 로드의 결합부위 및 실린더와 실린더 고정부 간에는 상호 회동이 가능한 구성으로 결합된다.In addition, the coupling portion between the vibration ring and the rod, and the cylinder and the cylinder fixing portion is coupled in a mutually rotatable configuration.

본 발명은 크랭크 샤프트의 회전중심 저널의 외곽에서 선회하는 저널을 방진구로 지지하게 할 수 있어 크랭크 샤프트가 회전함에 따라 발생하는 원심력에 의한 진동을 방지하게 할 수 있어 크랭크 샤프트의 가공을 위한 회전속도를 보다 높일 수 있게 하여 가공시간을 단축하게 할 수 있고, 가공부위의 진원도를 높일 수 있게 하는 효과가 있다.According to the present invention, it is possible to support the journal orbiting at the outer side of the center of rotation of the crankshaft with the dustproof port, thereby preventing the vibration caused by the centrifugal force generated as the crankshaft rotates, thereby increasing the rotation speed for the processing of the crankshaft. It is possible to further increase the machining time can be shortened, there is an effect that can increase the roundness of the machining portion.

이하에서 본 발명의 바람직한 실시 예에 대하여 첨부한 도면을 참조하여 상세하게 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 일반적인 크랭크 샤프트의 개략적인 형태도이고, 도 2는 선반에 고정되는 크랭크 샤프트의 개념도이며, 도 3은 본 발명 방진구의 사시도이고, 도 4는 본 발명 방진구의 단면도이며, 도 5는 종래 크랭크 샤프트 방진구의 단면도이다.1 is a schematic view of a general crankshaft, FIG. 2 is a conceptual view of a crankshaft fixed to a shelf, FIG. 3 is a perspective view of the dustproof device of the present invention, FIG. 4 is a sectional view of the dustproof device of the present invention, and FIG. Is a cross-sectional view of a conventional crankshaft dustproof port.

도 2에 도시된 것과 같이 베어링 저널(1)을 가공코자 하는 크랭크 샤프트(2)는 양단부의 베어링 저널(1)을 선반의 주축대(3)와 심압대(4)로 고정하고, 주축대(3)와 심압대(4) 사이에서 가공되는 베어링 저널(1)은 절삭공구(5)와 접촉되는 반대측면을 공지의 방진구(6)로 지지한다.As shown in FIG. 2, the crankshaft 2 for processing the bearing journal 1 fixes the bearing journal 1 at both ends by the spindle head 3 and the tail stock 4 of the lathe. The bearing journal 1, which is machined between 3) and the tail stock 4, supports the opposite side in contact with the cutting tool 5 with a known dustproof opening 6.

주축대(3)에 고정되는 베어링 저널(1)의 회전중심 외곽을 선회하는 콘로드 저널(7)은 도 4에 도시한 것과 같은 요동형 방진구(8)로 지지한다.The cone rod journal 7 which pivots around the center of rotation of the bearing journal 1 fixed to the main shaft 3 is supported by the oscillation type dustproof opening 8 as shown in FIG.

요동형 방진구(8)는 방진링(9)과 방진링(9)을 지지하는 신축가능하게 구성된 로드(10)와 실린더(11)로 구성된다.The oscillation type antivibration opening 8 is composed of a resiliently configured rod 10 and a cylinder 11 supporting the antivibration ring 9 and the antivibration ring 9.

방진링(9)은 원주방향에서 3개로 분할되며, 분할되는 방진링(9)은 결합볼트(12)에 의하여 결합고정할 수 있게 구성된다.The anti-vibration ring 9 is divided into three in the circumferential direction, the anti-vibration ring 9 to be divided is configured to be fixed by the coupling bolt 12.

3개로 분할되는 방진링(9)에는 각각 로드(10)가 결합된다.The rod 10 is coupled to each of the three vibration isolation rings 9.

로드(10)는 방진링(9)과 일정각도 범위 내에서 요동할 수 있게 회전핀(13)으로 결합되어 요동운동을 하는 방진링(9)의 위치에 따라 방진링(9)과 결합된 로드(10)의 각도변화를 수용할 수 있게 구성된다.The rod 10 is coupled to the anti-vibration ring 9 and the anti-vibration ring 9 according to the position of the anti-vibration ring 9 which is coupled to the rotation pin 13 to oscillate within a predetermined angle range. It is configured to accommodate the angular change of (10).

방진링(9)의 내부면, 콘로드저널(7)과 접촉하는 면에는 가공면의 손상을 방지할 수 있도록 PCB재질의 부싱(14)이 개재되며, 부싱(14)에는 방진링(9)을 통하여 외부에서 윤활유를 공급하는 윤활유 공급파이프(15)를 연결되게 할 수도 있다.The inner surface of the dustproof ring 9 and the surface in contact with the conrod journal 7 are provided with a bushing 14 of PCB material to prevent damage to the machining surface, and the bushing 14 has a dustproof ring 9. Through the lubricating oil supply pipe 15 for supplying lubricating oil from the outside may be connected.

윤활유 공급파이프(15)는 플렉시블 호스(도면미도시)에 의하여 베드(16)의 일측에 구비된 윤활유 공급장치(도면미도시)와 연결된다.The lubricating oil supply pipe 15 is connected to a lubricating oil supply device (not shown) provided on one side of the bed 16 by a flexible hose (not shown).

방진링(9)과 연결되는 신축가능한 로드(10)와 실린더(11)는 실린더(11)에 내장된 스프링(17)의 탄력에 의하여 로드(10)에 일정한 압력을 가하고 크랭크 샤프트(2)에서 발생하는 진동을 흡수한다.The flexible rod 10 and the cylinder 11, which are connected to the anti-vibration ring 9, exert a constant pressure on the rod 10 by the elasticity of the spring 17 embedded in the cylinder 11 and at the crankshaft 2. Absorb vibrations that occur.

실린더(11)와 로드(10)는 유체인 공기나 유압에 의하여 작동하게 하는 것도 가능하다.The cylinder 11 and the rod 10 can also be operated by air or hydraulic pressure which is a fluid.

방진링(9)과 결합되는 신축가능한 실린더(11)와 로드(10)는 120°각도로 분할되어 각각 지지되는 것이 바람직하며, 실린더(11)가 지지되고 고정되는 위치에서 실린더(11)는 일정각도범위 내에서 요동가능하게 공지의 볼조인트(18) 등으로 고정되게 구성하여 크랭크 샤프트(2)의 회전에 따라 방진링(9)의 위치가 변화되어 실린더(11)의 지지각도가 변화되는 것을 흡수할 수 있게 구성한다.Preferably, the flexible cylinder 11 and the rod 10 coupled with the anti-vibration ring 9 are divided and supported at 120 ° angles, and the cylinder 11 is fixed at a position where the cylinder 11 is supported and fixed. It is configured to be fixed with a known ball joint 18 or the like within the angular range so that the position of the vibration isolating ring 9 is changed according to the rotation of the crankshaft 2 so that the support angle of the cylinder 11 is changed. It is configured to be absorbable.

이상에서는 베어링 저널(1)을 가공하기 위하여 콘로드 저널(7)에 요동형 방진구(8)를 설치하는 실시 예에 대하여 설명하였으나, 콘로드 저널(7)을 가공하고자 할 경우에는 콘로드저널(7)의 회전중심을 선반의 주축대(3)와 심압대(4)에 고정하고 베어링저널(1)에 요동형 방진구(8)를 설치하면 콘로드 저널(7)의 가공시에 발생하는 진동의 억제가 가능하다.In the above, the embodiment in which the oscillation type dustproof opening 8 is installed in the cone rod journal 7 to process the bearing journal 1 has been described. However, when the cone rod journal 7 is to be processed, the cone rod journal When the center of rotation of (7) is fixed to the spindle headstock (3) and tailstock (4) of the lathe, and the oscillation type vibration isolation device (8) is installed in the bearing journal (1), it occurs during the processing of the cone rod journal (7). Vibration can be suppressed.

본 발명은 그 기술적 사상을 벗어나지 아니하는 범위 내에서 당업자의 수준에서 본 발명의 실시를 위한 다양한 변경이 가능한 것이므로 본 발명의 독점적 권리는 상세한 설명의 기재에 한정되지 않고 본 발명의 청구범위에 기재된 사항에 의하여 결정되어져야 할 것이다.Since the invention can be variously modified for carrying out the invention at the level of those skilled in the art without departing from the technical spirit of the present invention, the exclusive rights of the present invention is not limited to the description of the detailed description and matters described in the claims of the present invention. It must be decided by.

도 1은 일반적인 크랭크 샤프트의 개략적인 형태도1 is a schematic view of a general crankshaft

도 2는 선반에 고정되는 크랭크 샤프트의 개념도2 is a conceptual diagram of a crankshaft fixed to a lathe

도 3은 본 발명 요동형 방진구의 사시도Figure 3 is a perspective view of the rocking type vibration isolation device of the present invention

도 4는 본 발명 요동형 방진구의 단면도Figure 4 is a cross-sectional view of the rocking type vibration isolation device of the present invention

도 5는 종래 크랭크 샤프트 방진구의 단면도5 is a cross-sectional view of a conventional crankshaft dustproof port

※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

1. 베어링 저널 2. 크랭크 샤프트1. Bearing journal 2. Crankshaft

3. 주축대 4. 심압대3. Headstock 4. Tailstock

5. 절삭공구 6. 방진구5. Cutting tool 6. Dustproof tool

7. 콘로드저널 8. 요동형 방진구7. Conroad Journal 8. Oscillating Type

9. 방진링 10. 로드9. Dustproof ring 10. Rod

11. 실린더 12. 결합볼트11. Cylinder 12. Coupling Bolt

13. 회전핀 14. 부싱13. Rotary pin 14. Bushing

15. 윤활유 공급파이프 16. 베드15. Lube oil supply pipe 16. Bed

17. 스프링 18. 볼조인트17.Spring 18.Ball Joints

Claims (3)

선반의 주축과 심압대에 고정되는 크랭크 샤프트의 선삭가공시 진동을 억제하는 방진구에 있어서,In the anti-vibration port to suppress the vibration during the turning process of the crankshaft fixed to the main spindle and tailstock of the lathe, 회전중심이 고정된 저널의 외곽을 선회하는 저널에는 원주방향에서 3개로 분할되는 방진링(9)을 결합볼트(12)로 결합하여 고정하고, 방진링(9)에는 일정각도범위 내에서 회동가능하게 결합된 로드(10)가 3개 방향에서 결합되고, 로드(10)에는 실린더(11)가 결합되어 로드(10)와 실린더(11) 사이에 구비된 스프링(17)에 의하여 진동을 흡수할 수 있게 구성된 것을 특징으로 하는 크랭크 샤프트 저널가공용 방진구.In the journal orbiting the outer periphery of the fixed center of rotation, the vibration ring (9) divided into three in the circumferential direction is fixed by the coupling bolt (12), and the vibration ring (9) can be rotated within a certain angle range. The rod 10 is coupled in three directions, the cylinder 11 is coupled to the rod 10 to absorb vibration by the spring 17 provided between the rod 10 and the cylinder 11. Dustproofing for crankshaft journal processing, characterized in that configured to be. 제 1항에 있어서, 방진링(9)의 저널과 접촉면에는 PBC재질의 부싱(14)이 삽입되는 것을 특징으로 하는 크랭크 샤프트 저널가공용 방진구.The dustproofing device according to claim 1, wherein a bushing (14) of PBC material is inserted into the journal and contact surface of the dustproof ring (9). 제 1항에 있어서, 방진링(9)에는 윤활유 공급용 파이프(15)가 구비되는 것을 특징으로 하는 크랭크 샤프트 저널가공용 방진구.The dustproof opening for crankshaft journal processing according to claim 1, wherein the dustproof ring (9) is provided with a lubricating oil supply pipe (15).
KR1020080047185A 2008-05-21 2008-05-21 Crankshaft Journal Dustproofing Expired - Fee Related KR100876365B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020080047185A KR100876365B1 (en) 2008-05-21 2008-05-21 Crankshaft Journal Dustproofing
PCT/KR2009/001835 WO2009142394A2 (en) 2008-05-21 2009-04-09 Vibration isolator for crankshaft journal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080047185A KR100876365B1 (en) 2008-05-21 2008-05-21 Crankshaft Journal Dustproofing

Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100931380B1 (en) 2009-09-09 2009-12-10 (주) 디에스케이 Dust Clamp for Large Crankshaft

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61188061A (en) 1985-02-16 1986-08-21 Honda Motor Co Ltd Grinding tool for shaftlike work
JPS61241003A (en) 1985-04-15 1986-10-27 Mitsubishi Heavy Ind Ltd Machining method of crankshaft and its machining jig
JPH10296594A (en) 1997-04-24 1998-11-10 Isuzu Motors Ltd Machining jig for crankshaft

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61188061A (en) 1985-02-16 1986-08-21 Honda Motor Co Ltd Grinding tool for shaftlike work
JPS61241003A (en) 1985-04-15 1986-10-27 Mitsubishi Heavy Ind Ltd Machining method of crankshaft and its machining jig
JPH10296594A (en) 1997-04-24 1998-11-10 Isuzu Motors Ltd Machining jig for crankshaft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100931380B1 (en) 2009-09-09 2009-12-10 (주) 디에스케이 Dust Clamp for Large Crankshaft

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