KR880002334B1 - Grinding method and tool for cylinderical - Google Patents

Grinding method and tool for cylinderical Download PDF

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Publication number
KR880002334B1
KR880002334B1 KR1019850003738A KR850003738A KR880002334B1 KR 880002334 B1 KR880002334 B1 KR 880002334B1 KR 1019850003738 A KR1019850003738 A KR 1019850003738A KR 850003738 A KR850003738 A KR 850003738A KR 880002334 B1 KR880002334 B1 KR 880002334B1
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KR
South Korea
Prior art keywords
grinding
hole
diameter
cylinder
inner diameter
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KR1019850003738A
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Korean (ko)
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KR860008836A (en
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이상배
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대우중공업 주식회사
이경훈
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Priority to KR1019850003738A priority Critical patent/KR880002334B1/en
Publication of KR860008836A publication Critical patent/KR860008836A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/40—Single-purpose machines or devices for grinding tubes internally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

This grinding machine has an inside diameter with a thinthickness cylindrical tube (1) with a plurality of the bored holes (2), the cylindrical tube (1) being inserted into the cylindrical base tube (10) of the grinding machine and being tightened by bolts (12), where the diameter of the tightened parts (4) is smaller than that of the bored hole parts (3). The inside of the cylindrical tube (1) fixed in the chuck (13) of a grinding machine is ground by the grindstone (14).

Description

통공이 천설된 박형 원통의 내경 연삭방법및 그 치구Inner diameter grinding method of thin cylindrical cylinder with hole

제 1 도는 본 발명의 연삭 방법의 원리 설명도로서, 제1(a)도는 연삭 상태도. 제1(b)도는 연삭 완료 상태도.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory view of the principle of the grinding method of the present invention, in which Fig. 1 (a) is a grinding state diagram. 1 (b) is a grinding completion state diagram.

제 2 도는 본 발명의 치구를 이용한 연삭 상태도.2 is a grinding state diagram using the jig of the present invention.

제 3 도는 제 2 도의 "A"부 확대도.3 is an enlarged view of a portion “A” of FIG. 2.

제 4 도는 제 3 도의 B-B선 단면도.4 is a cross-sectional view taken along the line B-B in FIG.

제 5 도는 조임볼트의 다른 실시예를 도시하는 것으로 제5(a)도는 종 단면도. 제5(b)도는 C-C선 단면도.5 is a longitudinal sectional view of FIG. 5 (a) showing another embodiment of the fastening bolt. Fig. 5 (b) is a cross-sectional view taken along line C-C.

제 6 도는 종래 연삭 방법에 의한 연삭 상태도.6 is a state diagram of grinding by the conventional grinding method.

제 7 도는 연삭완료 상태도.7 is a grinding state.

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

1 : 원통 2: 통공1: cylinder 2: through hole

10 : 치구 본체 11 : 나사공10 jig body 11: screw hole

12 : 조임볼트 15 : 나사봉12: tightening bolt 15: screw rod

16 : 나사부 17 : 라쳇트치16: thread 17: ratchet

18 : 손잡이캡 20 : 포올18: handle cap 20: Fool

본 발명은 수푸울 벨브의 본체와 같이 주면에 다수의 통공이 천설된 박형(薄形)원통의 내경 연삭 방법 및 그 장치에 관한 것이다.TECHNICAL FIELD The present invention relates to a method for internal grinding of a thin cylinder in which a plurality of through holes are laid on a main surface, such as a main body of a water valve, and an apparatus thereof.

종래 이런 종류의 박형 원통의 내경을 연삭함에 있어서는, 제 6 도와 같이, 단순히 내경 연마기(25)의 척(26)에 원통(21)을 고정하여 회전 시킨면서 내경 연삭숫돌(27)로서 연삭하는 것이었다. 그러나 연삭 숫돌(27)이 접하는 면적(축선방향)에 있어서 통공(22)이 천설된 부분(23)은 좁고, 통공(22)이 천설되지 않은 부분(24)는 넓기 때문에 부분(23)에서의 단위 면적당 숫돌의 접촉 압력부분(24)에서의 단위면적당 숫돌의 접촉 압력보다 크게 되어 부분(23)은 연삭 깊이가 깊고 부분(24)는 연삭 깊이가 낮게 된다. 따라서 제 7 도와 같이 부분(23)의 직경 d1이 부분(24)의 직경 d2보다 약 0.005mm이상 만큼 크게 되어 진원상태로 연삭되지 않는 폐단이 있었다.In the conventional grinding of the inner diameter of this type of thin cylindrical cylinder, as in the sixth diagram, the inner diameter grinding wheel 27 was ground while simply rotating and rotating the cylinder 21 to the chuck 26 of the inner diameter grinder 25. . However, in the area (axial direction) where the grinding wheel 27 abuts, the part 23 in which the through hole 22 is laid is narrow, and the part 24 in which the through hole 22 is not laid is wide, so The contact pressure of the grindstones per unit area in the contact pressure portion of the grindstones per unit area is greater than that, so that the portion 23 has a deeper grinding depth and the portion 24 has a lower grinding depth. Therefore, as in the seventh degree, the diameter d 1 of the portion 23 is larger by about 0.005 mm or more than the diameter d 2 of the portion 24, so that there is a closed end that is not ground in a rounded state.

본 발명의 목적은 이러한 종래의 폐단을 해소하고 진원상태로 연삭할 수 있는 통공이 천설된 박형 원통의 내경 연삭 방법 및 그 치구를 제공하려는 것으로 이하 본 발명을 상세히 설명한다.An object of the present invention is to describe the present invention in detail to provide a method for grinding the inner diameter of the thin cylindrical cylinder with a through-hole that can eliminate the conventional end and grind in a rounded state.

상술한 목적을 달성하기 위하여 본 발명의 방법에서는 제 1 도에 도시한 바와 같이 다수의 통공(2)이 천설된 박형원통(1)의 내경을 연삭함에 있어서 통공(2) 않은 주변 부분(4)을 외부로 부터 중심 방향으로 압압하여 상기 주면 부분(4)의 직경 D2이 통공(2)이 천설된 주면 부분(3)의 직경 D1보다 소경(少經)으로 되도록 한 상태에서 연삭 숫돌(5)로써 내면을 연삭하는 것이다. 여기서 주면 부분(4)을 압압하는 힘 F는 원통(1)의 재질, 두께와 직경, 통공(2)의 크기 등에 따라서 결정하면 되며, 상술한 d1-d2만큼 D2가 D1보다 작게 되도록 하는 정도로 하면 된다. 즉 본 발명에 의하여 통공(2)이 천설지 않은 부분(4)의 직경 D2을 통공(2)이 천설된 부분(3)의 직경 D1보다 작게 변형 시킨 상태에서 연삭을 함으로써 연삭시 각 부분(3)에서의 연삭 깊이가 부분(4)에서 보다 깊이 되반 연삭 완료후 상기 힘 F를 제거하여 원통(1)을 탄성 복귀 시키면 부분(4)는 확경되고, 부분(3)은 축경되어 그 내경이 진원 상태로 되는 것이다.In order to achieve the above object, in the method of the present invention, as shown in FIG. 1, the peripheral portion 4, which is not the through-hole 2, in grinding the inner diameter of the thin cylinder 1 in which the plurality of the through-holes 2 are laid. Is pressed in the center direction from the outside so that the diameter D 2 of the main surface portion 4 is smaller than the diameter D 1 of the main surface portion 3 on which the through hole 2 is laid. 5) by grinding the inner surface. Herein, the force F for pressing the main surface portion 4 may be determined according to the material, thickness and diameter of the cylinder 1, the size of the through hole 2, and the like, and D 2 is smaller than D 1 by d 1 -d 2 . Do as much as you can. That is, according to the present invention, the grinding is performed by grinding in a state in which the diameter D 2 of the portion 4 in which the through hole 2 is not laid down is smaller than the diameter D 1 of the portion 3 in which the through hole 2 is laid down. The grinding depth in (3) is deeper than in the portion 4, and after the completion of the grinding, the force F is removed and the cylinder 1 is elastically returned. The portion 4 is enlarged, the portion 3 is reduced in diameter, and the inner diameter thereof is reduced. This is the epicenter.

다음 이러한 본 발명을 구현 하는데 적합한 치구를 제 2 도 내지 제 5 도에 따라서 설명한다. 제 2 도 내지 제 4 도는 본 발명 치구의 일실시예를 도시하는 것으로, 연삭할 원통(1)보다 큰 직경의 원통형 본체(10)의 주면에 다수의 나사공(11)을 대칭적으로 천설하고, 각 나사공(11)에는 외부로 부터 조임볼트(12)를 나합 하여서 된 것이다.Next, a jig suitable for implementing the present invention will be described with reference to FIGS. 2 to 5. 2 to 4 show one embodiment of the jig of the present invention, and a plurality of screw holes 11 are symmetrically laid on the main surface of a cylindrical body 10 of a larger diameter than the cylinder 1 to be ground. , Each screw hole 11 is made by screwing the tightening bolt 12 from the outside.

이러한 구성의 본 발명의 치구를 이용하여 다수의 통공(2)이 천설된 박형 원통(1)의 내경을 연삭함에 있어서는 제 2 도 내지 제 4 도에 도시한 바와 같이 원통형 본체(10)내에 원통(1)을 유삽하고 나사공(11)에 나합된 조임볼트(12)로써 원통(1)의 통공(2)이 천설되지 않은 부분(4)을 중심 방향으로 조여서 그 부분(4)의 직경 D2이 통공(2)이 천설된 부분(3)의 직경보다 직경 변형시킨 상태에서 원통 내경 연삭기의 척(13)에 물리고, 내경 연삭 숫돌(14)로써 연삭하는 것이다.When grinding the inner diameter of the thin cylindrical cylinder 1 in which the plurality of through holes 2 are installed using the jig of the present invention having such a configuration, the cylindrical body 10 as shown in FIGS. 1) is inserted into the screw hole (11) by tightening the bolts (12) through the hole (2) of the cylinder (1) is tightened in the direction of the center (4) where the hole (2) is not laid, the diameter D 2 of the portion (4) The through hole 2 is bitten by the chuck 13 of the cylindrical inner diameter grinder in a state where the diameter of the through hole 2 is larger than the diameter of the laid portion 3, and is ground by the inner diameter grinding wheel 14.

이와 같이 연삭함에 있어서는 상술한 바와 같이 각 부분(3)이 깊게 연삭이 행하여 진다. 연삭이 완료되면 조임볼트(12)를 해제하고 원통(1)을 회수하면 되는데 이때 원통(1)은 탄성 복귀 되어 그 내경이 진원 상태로 되는 것이다.In grinding in this way, each part 3 is ground deeply as mentioned above. When grinding is completed, the tightening bolt 12 is released and the cylinder 1 is recovered. At this time, the cylinder 1 is elastically returned to its inner diameter in a rounded state.

제 5 도는 본 발명에 사용되는 조임볼트(12)의 다른 실시예를 도시하는 것으로, 조임볼트(12)는 선단에는 나사부(16)가, 후단부에는 일방향 라쳇트치(17)를 주절한 나사봉(15)의 후단부에 유감되는 손잡이 캡(18)의 내주면에는 상기 라쳇트치(17)에 스프링(19)에 의해 상기 라쳇트치(17)에 스프링(19)에 의해 상시 치합되며 나사 이완 방향으로 계지되는 포올(20)을 탄착하여서 된 것이다.5 shows another embodiment of the tightening bolt 12 used in the present invention, the tightening bolt 12 is a screw rod 16 is a screw rod 16, at the front end, a one-way ratchet teeth 17 at the rear end On the inner circumferential surface of the handle cap 18, which is regrettable at the rear end of (15), the ratchet teeth 17 are always engaged with the ratchet teeth 17 by the springs 19 and in the screw relaxation direction. It is made by touching the pawl 20 to be locked.

이러한 구성의 조임볼트(12)를 사용하는 경우 선단의 나사부(16)를 상기 본체(10)의 나사공(11)에 나합하고 원통(1)의 부분(4)를 조임에 있어서, 손잡이 캡(18)을 돌려서 조이면 라쳇트시(17)와 포올(20)은 스프링(19)에 의해 탄착되어 있으며 해지되는 방향으로 계지되는 것이고, 조이는 방향에 대해서는 스프링(19)의 힘에 의해서 접촉되는 것이므로 나사부(16)에 걸리는 부하가 스프링(19)에 의한 라쳇트치(17)와 포올(20)의 마찰력 이상이 되면 손잡이 캡(18)은 헛돌게 된다. 즉, 나사부(16)에 의한 조임력은 스프링(19)에 의한 라쳇트치(17)와 포올(20)의 마찰력에 상당하는 크기로 항상 균일하게 되는 것이다.In the case of using the fastening bolt 12 having such a configuration, the screw cap 16 at the distal end is screwed into the threaded hole 11 of the main body 10, and in tightening the portion 4 of the cylinder 1, the handle cap ( 18) When tightening by turning, the ratchet sea 17 and the pole 20 are firmly held by the spring 19 and locked in the direction of release, and the screw is contacted by the force of the spring 19 with respect to the direction of tightening. When the load applied to (16) becomes more than the frictional force between ratchet teeth 17 and poles 20 by spring 19, the handle cap 18 will be in vain. That is, the tightening force by the threaded portion 16 is always uniform in magnitude corresponding to the frictional force between the ratchet teeth 17 and the pole 20 by the springs 19.

이상과 같이 본 발명에 의하면 다수의 통공이 천설된 원통의 내경을 진원 상태로 연삭할 수 있는 것이다.As described above, according to the present invention, the inner diameter of the cylinder on which a plurality of through holes are laid can be ground in a rounded state.

Claims (3)

다수의 통공(2)이 천설된 박형 원통(1)의 내경을 원통 내경 연삭기로써 연삭함에 있어서, 통공(2)이 천설되지 않은 부분(4)을 외부로 부터 중심 방향으로 압압하여 상기 부분(4)의 직경 D2이 통공(2)이 천설된 부분(3)의 직경 D1보다 소경으로 되도록 변형한 상태에서 연삭 함을 특징으로 하는 통공이 천설된 박형 원통의 내경 연삭 방법.In grinding the inner diameter of the thin cylindrical cylinder 1 in which a plurality of through holes 2 are laid down with a cylindrical inner diameter grinding machine, the portion 4 in which the through holes 2 are not laid is pressed from the outside to the center direction from the outside. A method for grinding an inner diameter of a thin cylindrical cylinder with a bored hole, characterized in that grinding is performed in a state in which the diameter D 2 of the diaphragm is deformed so as to be smaller than the diameter D 1 of the portion (3) where the through hole (2) is placed. 연삭할 원통(1)보다 큰 직경의 원통형 치구 본체(10)의 주면에 다수의 나사공(11)을 대칭적으로 천설하고, 각 나사공(11)에는 외부로 부터 원통(1)의 통공(2)이 천설되지 않은 부분(4)을 압압하는 조임볼트(12)를 나합하여서 된 통공이 천설된 박형 원통의 내경 연삭용 치구.A plurality of threaded holes 11 are symmetrically laid on the main surface of the cylindrical jig main body 10 having a diameter larger than the cylinder 1 to be ground, and each threaded hole 11 has a through hole of the cylinder 1 from the outside ( 2) The inner diameter grinding jig of the thin cylindrical cylinder through which the through-hole formed by joining the tightening bolts 12 that presses the part 4 which is not installed. 제 2 항에 있어서, 상기 조임볼트(12)는 선단에 나사부(16)가, 후단에 일방향 라쳇트치(17)가 형성된 나사봉(15)의 후단부에 손잡이 캡(18)을 유감하고, 그 내주면에는 상기 라쳇트치(17)에 스프링(19)으로 탄착되며 나사 이완 방향으로 포올(20)을 회동 가능하게 설치한 것을 특징으로 하는 통공이 천설된 박형 원통의 내경 연삭용 치구.3. The tightening bolt (12) has a handle cap (18) at the rear end of the screw rod (15) having a threaded portion (16) at the front end and a one-way ratchet (17) at the rear end. An inner circumferential surface jig for a thin cylindrical cylinder with a through-hole installed, characterized in that the ratchet tooth 17 is secured by a spring 19 and rotatably installed in the screw loosening direction.
KR1019850003738A 1985-05-29 1985-05-29 Grinding method and tool for cylinderical KR880002334B1 (en)

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Application Number Priority Date Filing Date Title
KR1019850003738A KR880002334B1 (en) 1985-05-29 1985-05-29 Grinding method and tool for cylinderical

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Application Number Priority Date Filing Date Title
KR1019850003738A KR880002334B1 (en) 1985-05-29 1985-05-29 Grinding method and tool for cylinderical

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KR860008836A KR860008836A (en) 1986-12-18
KR880002334B1 true KR880002334B1 (en) 1988-10-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108422279A (en) * 2018-02-01 2018-08-21 嘉兴乐之源光伏科技有限公司 A kind of outer ring polishing component for fluorescent tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108422279A (en) * 2018-02-01 2018-08-21 嘉兴乐之源光伏科技有限公司 A kind of outer ring polishing component for fluorescent tube

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