KR20150138601A - Assembly-type end-mill - Google Patents

Assembly-type end-mill Download PDF

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Publication number
KR20150138601A
KR20150138601A KR1020140066679A KR20140066679A KR20150138601A KR 20150138601 A KR20150138601 A KR 20150138601A KR 1020140066679 A KR1020140066679 A KR 1020140066679A KR 20140066679 A KR20140066679 A KR 20140066679A KR 20150138601 A KR20150138601 A KR 20150138601A
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South Korea
Prior art keywords
holder
head
hole
mill
fin
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KR1020140066679A
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Korean (ko)
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이인수
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(주)성산툴스
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Priority to KR1020140066679A priority Critical patent/KR20150138601A/en
Publication of KR20150138601A publication Critical patent/KR20150138601A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft

Abstract

The present invention relates to an assembly-type end-mill and, more specifically, to an assembly-type end-mill which can be used after replacing only a head part abraded or damaged by a cutting process. The assembly-type end-mill according to the present invention comprises: a holder part having a through-hole formed therein and having the end part of the through-hole tapered; a head part including a first taper part having one end tapered so that the contact part of the holder part can be combined with the taper of the holder part to be placed at the center of the holder part, and having a groove formed in the first taper part to be inserted into the through-hole; a first pin part having one end inserted into the groove of the head part and combined and having the other end inserted into the through-hole; and a second pin part combined with the first pin part to be inserted into the through-hole so that the head part can be attached to and detached from the holder part. Moreover, in the assembly-type end-mill, it is desirable that the first pin part is screwed to the head part and the second pin part is inserted into the first pin part and screwed. According to the present invention, an economical effect and use lifetime can be increased by enabling only an abraded or damaged head part of the end-mill to be replaced. In addition, according to the present invention, the head part can be placed at the center of the holder part when the head part is mounted on the holder part as the combination surface of the holder part and the head part is tapered.

Description

조립형 엔드밀{Assembly-type end-mill}Assembly-type end-mill < RTI ID = 0.0 >

본 발명은 조립형 엔드밀에 대한 것으로, 더욱 상세하게는 절삭가공으로 인하여 마모되거나 파손된 헤드부분만을 교체하여 사용할 수 있는 조립형 엔드밀에 대한 것이다. The present invention relates to an assembled end mill, and more particularly, to an assembled end mill which can be used by replacing only a worn or broken head part due to cutting.

밀링커터(milling cutter)는 원통·원뿔의 외주나 단면에 다수의 절삭날을 갖는 절삭공구로서, 정면커터, 평면커터, 엔드밀, 홈커터, 측면커터 등으로 구분되며 밀링머신에 장착되어 사용된다. A milling cutter is a cutting tool having a plurality of cutting edges on the outer circumference or a cross section of a cylinder or a cone, and is divided into a front cutter, a flat cutter, an end mill, a groove cutter and a side cutter. .

엔드밀은 둘레와 끝면에 날이 있어, 금형의 모반가공이나 곡면을 가공하는 경우 등에 사용되는 것으로, 대한민국 등록특허 제10-0820948호에서 제안하는 볼 엔드밀은 볼 날에 제1 날부와 제2 날부 및 제3 날부를 구비하고, 제1 곡률반경과 제2 곡률반경 및 제3 곡률반경이 상이한 곡률반경으로 되도록 구성되어 있어서 피삭재로부터 받는 볼 엔드밀의 직경방향에 대한 절삭저항의 방향을 제1 날부 및 제2 날부 및 제3 날부로 변화시켜서 볼 엔드밀의 진동을 억제하는 것이 가능하여, 그 결과로 이송속도를 고속화하거나 절입깊이를 증대할 수 있어서 그 만큼 절삭효율의 향상을 도모할 수 있다. The ball end mill proposed in Korean Patent Registration No. 10-0820948 is a ball end mill which has a first blade portion and a second blade portion on a ball blade, And a third blade section. The first blade section has a first radius of curvature, a second radius of curvature, and a third radius of curvature that are different from each other. The direction of the cutting resistance with respect to the radial direction of the ball end- And the second blade portion and the third blade portion to suppress the vibration of the ball end mill. As a result, the feeding speed can be increased or the cutting depth can be increased, thereby improving the cutting efficiency.

종래의 엔드밀은 절삭날이 마모되거나 파손될 경우, 일체형으로 이루어져 있어 엔드밀 전체를 교체하여야 하는 문제점이 있다. The conventional end mill has a problem in that when the cutting edge is worn or broken, the end mill is integrally formed and the entire end mill must be replaced.

본 발명은 상기의 문제점을 해결하기 위한 것이다. 본 발명은 마모되거나 파손된 헤드부분만을 교체하여 사용할 수 있는 조립형 엔드밀을 제공하는 것을 목적으로 한다. The present invention is intended to solve the above problems. An object of the present invention is to provide an assembled end mill which can be used by replacing only the worn or broken head part.

또한, 본 발명은 헤드부분의 교체시 상기 헤드부분을 홀더부의 중심에 위치시킬 수 있는 조립형 엔드밀을 제공하는 것을 목적으로 한다. Another object of the present invention is to provide an assembled end mill capable of positioning the head portion at the center of the holder portion when the head portion is replaced.

본 발명에 따른 조립형 엔드밀은 내부에 관통홀이 형성되고 상기 관통홀의 단부가 테이퍼진 홀더부와, 상기 홀더부의 중심에 위치할 수 있도록 상기 홀더부와의 접촉부가 상기 홀더부의 테이퍼에 형합하도록 일단이 테이퍼진 제1테이퍼부를 구비하고 상기 제1테이퍼부에 홈이 형성되어 상기 관통홀에 삽입되는 헤드부와, 일단은 상기 헤드부의 홈에 삽입되어 결합하고 타단은 상기 관통홀에 삽입되는 제1핀부와, 상기 관통홀에 삽입되어 상기 헤드부가 상기 홀더부에 탈착가능하도록 상기 제1핀부와 결합하는 제2핀부를 포함하는 것을 특징으로 한다. The assembled end mill according to the present invention is characterized in that the through hole is formed in the inner end of the through hole and the end portion of the through hole is tapered so that the contact portion between the holder portion and the holder portion is aligned with the taper of the holder portion A head portion having a tapered first tapered portion and formed with a groove in the first tapered portion and inserted into the through hole; a first portion having a first end inserted into the groove of the head portion, And a second fin portion inserted into the through hole and engaged with the first fin portion so that the head portion can be detachably attached to the holder portion.

또한, 상기의 조립형 엔드밀에 있어서, 상기 제1핀부는 상기 헤드부와 나사결합하며, 상기 제2핀부는 상기 제1핀부에 삽입되어 나사결합하는 것이 바람직하다. In the above-described assembled type end mill, it is preferable that the first fin portion is screwed to the head portion, and the second fin portion is inserted into the first fin portion and screwed thereto.

본 발명에 의하면 마모되거나 파손된 엔드밀의 헤드부분만을 교체가능하게 함으로써, 경제적인 효과 뿐만 아니라 사용수명도 높일 수 있다. According to the present invention, since only the head portion of the worn or damaged end mill can be replaced, not only the economic effect but also the service life can be increased.

또한, 본 발명에 의하면 홀더부와 헤드부의 결합면을 테이퍼지게 함으로써, 헤드부를 홀더부에 장착할 때 헤드부를 홀더부의 중심에 위치시킬 수 있다. Further, according to the present invention, by making the mating surfaces of the holder portion and the head portion taper, the head portion can be positioned at the center of the holder portion when the head portion is attached to the holder portion.

도 1은 본 발명에 따른 조립형 엔드밀의 실시예의 단면도이다.
도 2는 도 1에 도시된 실시예의 헤드부의 단면도이다.
도 3은 도 1에 도시된 실시예의 홀더부의 단면도이다.
도 4는 도 1에 도시된 실시예의 제1핀부의 단면도이다. 1 is a cross-sectional view of an embodiment of an assembled endmill in accordance with the present invention.
2 is a cross-sectional view of the head portion of the embodiment shown in Fig.
3 is a cross-sectional view of the holder portion of the embodiment shown in Fig.
4 is a cross-sectional view of the first fin portion of the embodiment shown in Fig.

도 1 내지 도 4를 참조하여 본 발명에 따른 조립형 엔드밀의 실시예에 대하여 설명한다.An embodiment of an assembled end mill according to the present invention will be described with reference to Figs. 1 to 4. Fig.

본 발명에 따른 엔드밀(1)은 홀더부(3)와, 헤드부(7)와, 제1핀부(11)와, 제2핀부(13)를 포함한다.An end mill 1 according to the present invention includes a holder portion 3, a head portion 7, a first fin portion 11, and a second fin portion 13.

홀더부(3)는 헤드부(7)와 제1핀부(11) 및 제2핀부(13)가 장착될 수 있도록 관통홀(4)을 형성하고, 관통홀(4)의 단부(6)는 테이퍼진 형태로 형성된다. 헤드부(7)는 일단에 단부(6)에 형합하는 제1테이퍼부(8)가 형성되고, 제1테이퍼부(8)에 나사홈(10)이 형성된다. 제1핀부(11)는 일단이 나사홈(10)에 삽입되어 나사결합하며, 타단은 관통홀(4)에 삽입되며 나사홈(12)이 형성된다. 제2핀부(13)는 관통홀(4)에 삽입되고, 일단이 제1핀부(11)의 나사홈(12)에 삽입되어 나사결합한다. The holder portion 3 forms a through hole 4 so that the head portion 7 and the first and second fin portions 11 and 13 can be mounted and the end portion 6 of the through hole 4 And is formed in a tapered shape. The head portion 7 has a first tapered portion 8 formed at one end thereof to be fitted to the end portion 6 and a screw groove 10 is formed in the first tapered portion 8. One end of the first fin 11 is inserted into and screwed into the thread groove 10 and the other end is inserted into the through hole 4 to form a thread groove 12. The second fin portion 13 is inserted into the through hole 4 and one end thereof is inserted into and screwed into the thread groove 12 of the first fin portion 11.

본 실시예의 경우, 제1핀부(11)의 일단은 헤드부(7)의 나사홈(10)에 삽입되어 헤드부(7)와 나사결합한다. 그리고 제1핀부(11)의 타단은 홀더부(3)의 관통홀(4)에 삽입된다. 이때, 홀더부(3)의 단부(6)와 헤드부(7)의 제1테이퍼부(8)가 맞닿아 헤드부(7)는 홀더부(3)의 중심에 위치한다. 제2핀부(13)는 홀더부(3)의 관통홀(4)에 삽입되어 일단이 제1핀부(11)의 나사홈(12)과 나사결합한다. 그러면 헤드부(7)는 홀더부(3)에 고정된다. In this embodiment, one end of the first fin 11 is inserted into the thread groove 10 of the head part 7 and screwed to the head part 7. The other end of the first fin 11 is inserted into the through hole 4 of the holder 3. At this time, the end portion 6 of the holder portion 3 abuts against the first tapered portion 8 of the head portion 7, so that the head portion 7 is located at the center of the holder portion 3. The second fin portion 13 is inserted into the through hole 4 of the holder portion 3 and one end of the second fin portion 13 is screwed into the thread groove 12 of the first fin portion 11. Then, the head part (7) is fixed to the holder part (3).

조립이 완료된 엔드밀(1)은 밀링머신에 장착되어 절삭가공에 사용되고, 가공이 진행될수록 헤드부(7)가 마모되거나 파손되어 가공을 하지 못하게 된다. 그러면 제1핀부(11)와 제2핀부(13)의 나사결합을 풀어 제1핀부(11)를 홀더부(3)와 분리시킨다. 분리된 제1핀부(11)는 제1핀부(11)와 나사결합된 헤드부(7)를 분리시킨다. 분리된 헤드부(7)는 마모되거나 파손되지 않은 헤드부(7)로 교체하여 사용할 수 있다. The assembled end mill 1 is mounted on a milling machine and used for cutting. As the machining progresses, the head 7 is worn or damaged and can not be machined. Then, the first fin 11 and the second fin 13 are unscrewed to separate the first fin 11 from the holder 3. The separated first fin portion 11 separates the head portion 7 screwed with the first fin portion 11. The separated head part 7 can be replaced with a worn or damaged head part 7 and used.

1 : 엔드밀 3 : 홀더부
4 : 관통홀 6 : 단부
7 : 헤드부 8 : 제1테이퍼부
10 : 나사홈 11 : 제1핀부
12 : 나사홈 13 : 제2핀부1: end mill 3: holder part
4: through hole 6: end
7: head part 8: first taper part
10: screw groove 11: first fin portion
12: screw groove 13: second fin portion

Claims (2)

내부에 관통홀이 형성되고, 상기 관통홀의 단부가 테이퍼진 홀더부와,
상기 홀더부의 중심에 위치할 수 있도록 상기 홀더부와의 접촉부가 상기 홀더부의 테이퍼에 형합하도록 일단이 테이퍼진 제1테이퍼부를 구비하고, 상기 제1테이퍼부에 홈이 형성되어 상기 관통홀에 삽입되는 헤드부와,
일단은 상기 헤드부의 홈에 삽입되어 결합하고, 타단은 상기 관통홀에 삽입되는 제1핀부와,
상기 관통홀에 삽입되어 상기 헤드부가 상기 홀더부에 탈착가능하도록 상기 제1핀부와 결합하는 제2핀부를 포함하는 것을 특징으로 하는 조립형 헨드밀.A through hole is formed in the inside of the through hole,
And a first tapered portion having one end tapered so that a contact portion of the contact portion with the holder portion is formed in the taper of the holder portion so as to be located at the center of the holder portion, and a groove is formed in the first taper portion, A head portion,
A first fin portion having one end inserted into the groove of the head portion and the other end inserted into the through hole,
And a second pin portion inserted into the through hole to engage with the first fin portion so that the head portion can be detachably attached to the holder portion. 제1항에 있어서,
상기 제1핀부는 상기 헤드부와 나사결합하며,
상기 제2핀부는 상기 제1핀부에 삽입되어 나사결합하는 것을 특징으로 하는 조립형 엔드밀. The method according to claim 1,
Wherein the first pin portion is screwed with the head portion,
And the second fin portion is inserted into and screwed into the first fin portion.
KR1020140066679A 2014-06-02 2014-06-02 Assembly-type end-mill KR20150138601A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180001669A (en) * 2016-06-24 2018-01-05 삼성디스플레이 주식회사 Grinding device for substrate
CN109396517A (en) * 2018-12-21 2019-03-01 成都美奢锐新材料有限公司 A kind of assembly type high-precision end milling cutter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180001669A (en) * 2016-06-24 2018-01-05 삼성디스플레이 주식회사 Grinding device for substrate
CN109396517A (en) * 2018-12-21 2019-03-01 成都美奢锐新材料有限公司 A kind of assembly type high-precision end milling cutter
CN109396517B (en) * 2018-12-21 2024-01-23 成都美奢锐新材料有限公司 Assembled high-precision vertical milling cutter

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