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KR20170091510A - Cutters for lathes - Google Patents

Cutters for lathes Download PDF

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Publication number
KR20170091510A
KR20170091510A KR1020170008871A KR20170008871A KR20170091510A KR 20170091510 A KR20170091510 A KR 20170091510A KR 1020170008871 A KR1020170008871 A KR 1020170008871A KR 20170008871 A KR20170008871 A KR 20170008871A KR 20170091510 A KR20170091510 A KR 20170091510A
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KR
South Korea
Prior art keywords
blade portion
cutter
cutting
blade
groove
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Ceased
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KR1020170008871A
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Korean (ko)
Inventor
김선윤
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김선윤
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/005—Geometry of the chip-forming or the clearance planes, e.g. tool angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/02—Cutting tools with straight main part and cutting edge at an angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/04—Cutting-off tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/141—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness
    • B23B27/145—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness characterised by having a special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2210/00—Details of turning tools

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Milling Processes (AREA)

Abstract

The present invention relates to a cutter for a lathe and, more specifically, relates to a cutter for a lathe manufactured with high intensity metal, wherein a division blade unit having a predetermined width in a central portion of a front end blade unit of the cutter coming in contact with an object to be processed is formed to enable a cutting chip generated in a cutting step to be split and discharged in a longitudinal direction to be easily discharged in a cutting groove. Moreover, it is minimized that an end of the cutting blade is continuously rolled and collides with a cutter surface to damage the cutter.

Description

선반용 커터{Cutters for lathes}{Cutters for lathes}

본 발명은 선반용 커터에 관한 것으로 보다 구체적인 것은, 고강도 금속(초경)으로 제조되는 선반용 커터에 있어서, 피가공물과 접촉하는 커터의 선단날부 중앙에 일정폭을 가지는 분할날부를 형성하여 절삭단계에서 발생하는 절삭칩이 길이방향으로 쪼개어지면서 배출되게 하여 절삭홈에서의 배출이 용이하도록 구성하고, 절삭날의 끝이 연속적으로 말려서 커터 표면에 충돌하여 커터에 손상을 주는 일이 최소화 되게 구성한 것이다.
More particularly, the present invention relates to a cutter for a lathe, and more particularly, to a cutter for a lathe manufactured from a high strength metal (cemented carbide), in which a split blade portion having a predetermined width is formed at the center of a tip end portion of a cutter contacting a workpiece, The cutting chips are generated in a longitudinal direction and are discharged to be easily discharged from the cutting grooves and the tip of the cutting edge is continuously curled so that it is minimized to collide with the cutter surface and damage the cutter.

종래의 선반용 커터는 피가공물과 접촉하는 커터의 선단날부가 일정폭을 가지는 직선으로 형성되어 피가공물의 표면에 커터날이 접촉시키면 선단날부 전면이 동시에 접촉되어 선단날부의 폭과 같은 면적이 깎여지므로 선단날부폭과 같은 폭의 절삭칩이 발생하고 절삭칩은 배출되면서 끝이 말리기 때문에 절삭홈이 깊어지면 절삭칩의 양측면이 절삭홈 양측면과 마찰되는 저항이 커서 절삭부하가 커지므로 쉽게 배출되지 않고 절삭속도를 느리게 하므로 작업성능이 떨어지는 불편이 있고, 둥글게 말리는 끝이 커터날의 상면을 타격하므로 커터날이 충돌저항을 받아 손상되는 일이 잦아 수명이 오래가지 못하는 문제가 있었다.
The conventional cutter for a lathe has a leading edge portion of a cutter in contact with a workpiece and is formed into a straight line having a constant width. When the cutter edge is brought into contact with the surface of the workpiece, the front edge portion is simultaneously contacted, Therefore, when the cutting grooves are deepened, both sides of the cutting chip are rubbed against both sides of the cutting grooves, so that the cutting load becomes large. There is an inconvenience that the work performance is lowered because the cutting speed is slow, and since the rounded edge strikes the upper surface of the cutter blade, the cutter blade is damaged due to the collision resistance, so that the life is not long.

본 발명은 상기 불편을 해소하기 위하여 개발된 것이다.
The present invention has been developed in order to solve the above inconvenience.

본 발명은 고강도금속(초경)으로 제조되어 일정형상과 길이를 가지며 결합부(1가)와 절삭날부(1나)로 구분되는 선반용 커터(1)에 있어서,The present invention relates to a cutter (1) for a lathe, which is made of a high strength metal (carbide) and has a predetermined shape and length and is divided into a joint part (1) and a cutting edge part (1)

피가공물(3)과 대면하는 절삭날부(1나)의 선단에 형성되는 선단날부(1a) 폭방향 중앙에 일정형상의 분할날부(2)를 형성하여서 되는 구성이다.The split blade portion 2 having a predetermined shape is formed at the center of the front edge portion 1a formed at the tip end of the cutting edge portion 1 facing the workpiece 3 in the width direction.

상기 분할날부(2)는 선단날부(1a)의 중앙에서 일정폭으로 요입되게 요입날부(2a)를 형성하여 이루어지거나 일정폭으로 돌출되는 돌출날부(2b)를 형성하여 이루어진다.The split blade portion 2 is formed by forming the concave blade portion 2a so as to be recessed at a predetermined width from the center of the front blade portion 1a or by forming a protruding blade portion 2b protruding with a constant width.

요입날부(2a)는 단면이 반원형홈(2a'), 사다리꼴홈(2a"), 브이형홈(2a"'), 새부리형홈(2a"")중에서 선택될 수 있고, 돌출날부(2b)는 단면의 끝이 "

Figure pat00001
" 형으로 되는 끌형상돌출날(2b'), 반원형돌출날(2b"), 산형돌출날(2b"'), 직삼각형돌출날(2b"") 중에서 선택될 수 있으며, 분할날부를 구성하는 요입날부와 돌출날부는 홈깊이나 돌출높이가 0.7 ~ 1.5mm 범위에서 선택되는 것이 바림직하다.
The projecting blade portion 2a can be selected from among a semicircular groove 2a ', a trapezoidal groove 2a'', a V-shaped groove 2a''and a barbed groove 2a' The end of "
Figure pat00001
Quot ;, a semi-circular protruding edge 2b ", a mountain-like protruding edge 2b ", and a right triangular protruding edge 2b " It is desirable that the depth of the groove for the blade portion and the protruding blade portion is selected in the range of 0.7 to 1.5 mm.

이와 같이 된 본 발명은 피가공물(3)의 표면에 선반용 커터(1)의 절삭날부(1나)선단에 형성된 선단날부(1a)를 접촉시켜 절삭작업을 하게 되면 선단날부(1a)의 중앙부에 형성된 분할날부(2)에 의하여 절삭되는 절삭면이 폭방향으로 분할되어 절삭이 이루어지고, 분할날부에 의하여 절삭칩이 쪼개어져 배출되는 절삭이 이루어진다.In the present invention as described above, when the cutting edge portion 1a formed on the tip of the cutting edge portion 1b of the lathe cutter 1 is brought into contact with the surface of the workpiece 3 to perform a cutting operation, The cutting surface cut by the split blade portion 2 formed on the cutting edge portion is divided in the width direction to perform cutting, and cutting is performed in which the cutting chip is split and discharged by the split blade portion.

따라서 선단날부에 요입날부(2a)가 형성되어 있으면 절삭칩 중간에 요입홈과 같은 모양이 형성되어 절삭칩의 양단이 절삭홈 바깥쪽으로 젖혀지거나 쪼개어지게 되므로 절삭팁의 끝이 코일처럼 말리는 것을 방지할 수 있어서 배출이 신속 용이하게 되는 이점이 있고, 선단날부에 돌출날부(2b)가 형성되어 있으면 절삭단계에서 절삭칩이 세쪽으로 쪼개어져 배출되게 되므로 절삭칩이 절삭홈의 내벽과 마찰되는 저항이 줄어들고 끝이 말리는 현상도 줄어들게 되므로 배출이 용이하게 되고, 절삭칩이 커터날의 상단면에 부치는 현상이 줄어들게 되어 커터날과의 마찰저항도 줄어들어 커터날과 절삭칩이 마찰하여 발생하는 커터 손상도 줄일 수 있어 커터수명이 길어지는 이점이 있고, 절삭작업을 신속하고 능률적으로 수행할 수 있어서 생산성을 높힐 수 있는 이점이 있다.
Therefore, if the concave blade portion 2a is formed at the tip end portion, a shape similar to the concave groove is formed in the middle of the cutting tip, so that both ends of the cutting tip are bent or split to the outside of the cutting groove to prevent the end of the cutting tip from being curled like a coil If the protruding blade portion 2b is formed at the tip end portion, the cutting chip is split into three pieces in the cutting step and discharged, so that the resistance of the cutting chip to the inner wall of the cutting groove is reduced And the tip end of the cutter blade is reduced, so that the frictional resistance between the cutter blade and the cutter blade is reduced. Thus, the cutter damage caused by the friction between the cutter blade and the cutting chip can be reduced There is an advantage of longer cutter life, and cutting work can be done quickly and efficiently, which can increase productivity. There is an advantage.

도 1은 본 발명의 선단날부에 요입날부를 형성한 실시상태 예시도
도 2(a)(b)(c)(d)는 도 1의 요입날부 종류를 보이는 예시도
도 3은 본 발명의 선단날부에 돌출날부를 형성한 실시상태 예시도
도 4(a)(b)(c)(d)는 도 3의 돌출날부 종류를 보이는 사시도
도 5는 본 발명에 의한 절삭칩의 일례를 보이는 사시도이다.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing an embodiment of the present invention,
Figs. 2 (a), 2 (b), 2 (c) and 2 (d)
Fig. 3 is an example of a state in which a protruding blade portion is formed at the tip end portion of the present invention
4 (a), 4 (b), 4 (c) and 4 (d)
5 is a perspective view showing an example of a cutting chip according to the present invention.

본 발명은 고강도금속(초경)으로 제조되어 일정형상과 길이를 가지며 결합부(1가)와 절삭날부(1나)로 구분되는 선반용 커터(1)에 있어서,The present invention relates to a cutter (1) for a lathe, which is made of a high strength metal (carbide) and has a predetermined shape and length and is divided into a joint part (1) and a cutting edge part (1)

피가공물(3)과 대면하는 절삭날부(1나) 선단에 형성되는 선단날부(1a)의 폭방향 중앙에 일정형상의 분할날부(2)를 형성하여서 되는 구성이다.The split blade portion 2 having a predetermined shape is formed at the center of the front edge portion 1a formed at the tip end of the cutting edge portion 1 facing the workpiece 3 in the width direction.

상기 분할날부(2)는 선단날부(1a)의 중앙에서 일정폭으로 요입되게 요입날부(2a)를 형성하여 이루어지거나 일정폭으로 돌출되는 돌출날부(2b)를 형성하여 이루어진다.The split blade portion 2 is formed by forming the concave blade portion 2a so as to be recessed at a predetermined width from the center of the front blade portion 1a or by forming a protruding blade portion 2b protruding with a constant width.

요입날부(2a)는 도 2의 (a)(b)(c)(d)에 예시한 바와 같이 단면이 반원형홈(2a'), 사다리꼴홈(2a"), 브이형홈(2a"'), 새부리형홈(2a"")중에서 선택되고, 돌출날부(2b)는 도 4의 (a)(b)(c)(d)에 예시한 바와 같이 단면의 끝이 "

Figure pat00002
" 형으로 되는 끌형상돌출날(2b'), 반원형돌출날(2b"), 산형돌출날(2b"'), 직삼각형돌출날(2b"") 중에서 선택돌 수 있으며, 분할날부를 구성하는 요입날부나 돌출날부는 홈깊이나 돌출높이가 0.7 ~ 1.5mm 범위에서 선택되는 것이 바림직하다.
The recessed blade portion 2a has a semicircular groove 2a ', a trapezoidal groove 2a'', a V-shaped groove 2a'', and a semicircular groove 2b' as shown in FIGS. 2 (a) And the projecting blade portion 2b is selected from the bird's tooth shaped groove 2a "as shown in FIGS. 4 (a), 4 (b), 4 (c)
Figure pat00002
A protruding cutting edge 2b ', a semicircular protruding cutting edge 2b'', a mountain-like protruding cutting edge 2b'', and a right-triangular protruding cutting edge 2b''' It is preferable that the groove depth and the protrusion height of the mouth part and the protruding part are selected in the range of 0.7 to 1.5 mm.

1 : 선반용 커터 1a : 선단날부
2 : 분할날부 2a : 요입날부
2a' : 반원형홈 2a" : 사다리꼴홈
2a"' : 브이형홈 2a"" : 새부리형홈
2b : 돌출날부 2b' : 끌형상돌출날
2b" : 반원형돌출날 2b"' : 산형돌출날
2b"" : 직삼각형돌출날1: Cutter for lathe 1a:
2: Split blade part 2a: Split blade part
2a ': Semicircular groove 2a'': Trapezoidal groove
2a "': V groove 2a"": Birch groove
2b: projecting blade portion 2b ': chisel-shaped projecting blade
2b ": semicircular protruding edge 2b"':
2b "":< / RTI >

Claims (6)

고강도금속(초경)으로 제조되어 일정형상과 길이를 가지며 결합부(1가)와 절삭날부(1나)로 구분되는 선반용 커터(1)에 있어서,
피가공물(3)과 대면하는 절삭날부(1나)의 선단부에 형성되는 선단날부(1a)의 폭방향 중앙에 일정형상의 분할날부(2)를 형성하여서 되는 선반용 커터.
A cutter (1) for a lathe, which is made of a high strength metal (carbide) and has a predetermined shape and length and is divided into a joint part (1) and a cutting edge part (1)
Wherein a split blade portion (2) having a predetermined shape is formed in a widthwise center of a tip blade portion (1a) formed at a tip end portion of a cutting blade portion (1) facing the workpiece (3).
청구항 제1항에 있어서,
분할날부(2)는 선단날부(1a)의 중앙에서 일정폭으로 요입되게 요입날부(2a)를 형성하여 이루어진 선반용 커터.
The method according to claim 1,
The divided blade portion (2) has a recessed blade portion (2a) formed so as to be recessed at a predetermined width from the center of the leading edge portion (1a).
청구항 제1항에 있어서,
분할날부(2)는 선단날부(1a)의 중앙에서 일정폭으로 돌출되게 돌출날부(2b)를 형성하여 이루어진 선반용 커터.
The method according to claim 1,
The divided blade part (2) has a protruded blade part (2b) formed so as to protrude at a predetermined width from the center of the leading edge part (1a).
청구항 제1항에 있어서,
요입날부(2a)는 단면이 반원형홈(2a'), 사다리꼴홈(2a"), 브이형홈(2a"'), 새부리형홈(2a"")중에서 선택되는 선반용 커터.
The method according to claim 1,
The recessed blade portion 2a is selected from a cross section of a semicircular groove 2a ', a trapezoidal groove 2a'', a V-shaped groove 2a'', and a curved groove 2a'''.
청구항 제1항에 있어서,
돌출날부(2b)는 단면의 끝이 "
Figure pat00003
" 형으로 되는 끌형상돌출날(2b'), 반원형돌출날(2b"), 산형돌출날(2b"'), 직삼각형돌출날(2b"") 중에서 선택되는 선반용 커터.
The method according to claim 1,
The protruding blade portion 2b is formed such that the end of the cross-
Figure pat00003
A protruding cutting edge 2b ', a semicircular protruding cutting edge 2b', a mountain-like protruding cutting edge 2b '', and a right-triangular protruding cutting edge 2b ''.
청구항 제1항에 있어서,
분할날부(2)는 요입날부의 홈깊이나 돌출날부의 돌출높이가 0.7 ~ 1.5mm 범위에서 선택되는 선반용 커터.
The method according to claim 1,
Wherein the split blade portion (2) is selected from the groove depth of the recessed portion and the projecting height of the projecting blade portion in the range of 0.7 to 1.5 mm.
KR1020170008871A 2016-02-01 2017-01-18 Cutters for lathes Ceased KR20170091510A (en)

Applications Claiming Priority (4)

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KR20160012230 2016-02-01
KR1020160012230 2016-02-01
KR20160024492 2016-02-29
KR1020160024492 2016-02-29

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558974A (en) * 1981-03-03 1985-12-17 Iscar Ltd. Tool system for precision slotting

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558974A (en) * 1981-03-03 1985-12-17 Iscar Ltd. Tool system for precision slotting

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