WO2017090818A1 - Lubricated punch - Google Patents

Lubricated punch Download PDF

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Publication number
WO2017090818A1
WO2017090818A1 PCT/KR2015/014066 KR2015014066W WO2017090818A1 WO 2017090818 A1 WO2017090818 A1 WO 2017090818A1 KR 2015014066 W KR2015014066 W KR 2015014066W WO 2017090818 A1 WO2017090818 A1 WO 2017090818A1
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WO
WIPO (PCT)
Prior art keywords
path
lubricating oil
small
punch
diameter
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Application number
PCT/KR2015/014066
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French (fr)
Korean (ko)
Inventor
이석만
이선홍
Original Assignee
(주)지아이엘
이석만
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Publication of WO2017090818A1 publication Critical patent/WO2017090818A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously

Definitions

  • the present invention relates to a punch for forming a hole in a thin plate made of metal or the like, and more particularly, to a lubricated punch having excellent durability since it can supply lubricant to an outer surface of a punch end.
  • the punch is used to form a hole through which a fastening member such as a bolt can pass in a thin plate made of metal, plastic, or the like.
  • the punch is vertically pressed to punch a hole by a shear force.
  • the end of the punch In punching operation by punch, the end of the punch can be easily worn between the outer surface of the punch end and the shear fracture surface of the plate because heat generated by the large friction force and friction force is generated.
  • the present invention is to solve the problems of the prior art as described above, it is possible to reduce the friction force generated on the outer surface of the punch by supplying lubricant to the outer surface of the punch, it is easy to supply the lubricant according to the operating state of the punch
  • the purpose is to provide a lubricated punch that can be adjusted.
  • a body consisting of a punching portion located on one side in the longitudinal direction and a support portion located on the other side in the longitudinal direction;
  • a lubrication passage formed through the inside of the body in a longitudinal direction and having at least one outlet on an outer surface of the punching portion;
  • a lubricating oil supply adjusting means for opening and closing the outlet of the lubricating oil passage.
  • the lubricating oil supply adjusting means may include a small path penetrating the interior of the punching part in a longitudinal direction, a large path penetrating the interior of the support part in a longitudinal direction, and a small path in which the diameter gradually changes.
  • a lubrication flow path consisting of a boundary portion connecting the large path and a branch connecting the boundary portion and the outlet; It is disposed over the entire section of the small path and the boundary portion and a partial section of the large path, the small diameter pin, the outer diameter is larger than the diameter of the small path, the outer diameter coincides with the diameter of the small path is larger than the diameter of the small path.
  • Large diameter pins are formed smaller than the diameter of the and gradually changing the diameter of the operation pin consisting of the joint connecting the small diameter pins and large diameter pins; And a spring pressurizing the end face of the large diameter pin in the large diameter path.
  • the working pin, the small diameter pin penetrates in the longitudinal direction thereof, and a second lubrication flow path is formed in which the inlet is located on the side of the joint and the outlet is located on the distal side of the small diameter pin.
  • the end face of the punching portion is provided with a lubrication type punch, characterized in that a groove communicating with a small path is formed.
  • an oil supply punch is provided on the outer surface of the punching portion, a lubricating oil groove formed in communication with the outlet of the lubricating oil passage.
  • the lubrication type punch according to the present invention can supply lubricating oil to the outer surface of the punching part that passes directly through the plate during the punching operation, thereby reducing the generation of frictional force and frictional heat caused by friction between the punching portion and the plate.
  • And lubricating oil supply to the outer surface of the punching portion can be adjusted according to the working conditions.
  • the lubricating oil may be more evenly dispersed on the outer surface of the punching portion.
  • FIG 1 and 2 are cross-sectional views of the oil type punch according to the present invention.
  • FIG. 3 is an explanatory diagram for the case where the oil supply punch includes the second lubrication flow passage.
  • FIG. 4 is an explanatory view of a case where the oil supply punch is provided with a lubricating oil groove.
  • the present invention relates to a punch for forming a hole in a thin plate made of metal or the like, which is generated on the outer surface of the punching portion 11 by supplying lubricating oil to the outer surface of the punching portion 11 that passes directly through the sheet during the punching operation.
  • the friction force may be reduced, but the lubricant may be easily adjusted according to the operation state of the punch.
  • FIG. 1 and 2 show a cross-sectional view of the lubricated punch 1 according to the present invention.
  • the lubrication type punch 1 includes a body 10, a lubrication oil passage 20, and a lubricating oil supply adjusting means.
  • the body 10 is a part forming the external appearance of the lubricated punch 1 according to the present invention and is formed in a shape close to a cylindrical shape, and has almost the same outer shape as a general punch.
  • a punching portion 11 which presses and passes directly through the plate during the punching operation, the other side is a support portion 12 is joined to the upper mold of the press while supporting the punching portion (11) do.
  • the lubricating oil passage 20 is formed by penetrating the inside of the body 10 in a longitudinal direction, and periodically injects lubricating oil or connects the lubricating oil passage 20 with an external lubricating oil tank to fill the lubricating oil. Keep it.
  • the lubricating oil passage 20 is formed to have one or more outlets 21 on the outer surface of the punching part 11 so that lubricating oil is supplied to the outer surface of the punching part 11 which is rubbed with the plate during the punching operation. The heat generated by the frictional force and frictional force generated on the outer surface of 11) can be reduced.
  • the outlet 21 of the lubrication passage 20 is exemplarily formed at the end face of the punching part 11 and the outer surface of the boundary between the punching part 11 and the support part 12. .
  • the lubricating oil supply control means opens the outlet 21 of the lubricating oil passage 20 during the punching operation and closes it when not, so that the lubricating oil can be supplied to the outer surface of the punching portion 11 only during the punching operation.
  • the lubricating oil supply adjusting means may more specifically include a lubricating oil passage 20, an operation pin 30, and a spring 40, which are divided into a small path 22, a large path 23, and the like.
  • the lubricating oil passage 20 when constituting the lubricating oil supply adjusting means has a small path 22 penetrating the interior of the punching section 11 in the longitudinal direction, and a large path penetrating the interior of the support section 12 in the longitudinal direction.
  • the diameter gradually changes and consists of a boundary portion 24 connecting the small path 22 and the large path 23 and a branch 25 connecting the boundary portion 24 and the outlet 21.
  • the small path 22 has a small cross-sectional diameter
  • the large path 23 has a larger cross-sectional diameter than the small path 22, and the boundary 24
  • the diameter changes little by little between the small path 22 diameter and the large path 23 diameter so that the outer surface is inclined.
  • the operation pin 30 is disposed over the entire section of the small path 22 and the boundary 24 and a part of the large path 23, and the outer diameter coincides with the diameter of the small path 22 and the small path.
  • Small diameter pin 31 is formed longer than (22), the outer diameter is larger than the diameter of the small path 22 and the large diameter pin 32 is formed smaller than the diameter of the large path 23 and the small diameter pin gradually changes It consists of a joint portion (33) connecting the 31 and the large diameter pin (32).
  • the spring 40 serves to press the end surface of the large diameter pin 32 in the large path (23).
  • the inclination angle of the inner surface of the boundary portion 24 and the inclination angle of the outer surface of the joint portion 33 are formed in the same manner so that the inner surface of the boundary portion 24 and the outer surface of the joint portion 33 are in close contact with each other.
  • the inlet 25a of the branch 25 is formed to be biased in the portion of the small path 22 among the boundaries 24. It is preferable.
  • the working pin 30 penetrates through the small diameter pin 31 in the longitudinal direction thereof, and the inlet 34a is located at the side of the joint portion 33 and the outlet 34b is located at the distal side of the small diameter pin 31.
  • a second lubrication flow path 34 may be formed, and in this case, a groove 11a communicating with the small path 22 is formed at the end surface of the punching part 11. 3 is an explanatory diagram for this case.
  • the small diameter pin 31 is located in the small path 22 so that the lubricating oil cannot easily flow.
  • the second lubrication flow path 34 is formed in the small diameter pin 31 as described above, the lubricating oil is also supplied through the small path 22. It may flow, so that lubricating oil may be supplied to the end surface of the punching portion (11).
  • the groove 11a communicating with the small path 22 at the end face of the punching part 11 is also in communication with the second lubrication flow path 34 whose outlet 34b is located at the distal side of the small pin 31. 2 serves to evenly distribute the lubricating oil supplied through the lubrication passage 34 to the end surface of the punching portion (11).
  • the inlet 34a of the second lubrication flow passage 34 has a boundary portion 24 in which the boundary portion 24 and the large path 23 are blocked from each other, as shown in FIG. Since the lubricating oil is not supplied to the furnace, the lubricating oil is not supplied to the second lubrication oil passage 34, and when the operation pin 30 is pressed by the plate while the punch is operated, the boundary portion 24 and the large passage 23 communicate with each other. Lubricating oil may be supplied to the boundary part 24, and the lubricating oil may be supplied to the second lubrication passage 34.
  • the inlet 34a of the second lubrication passage 34 is biased toward the small diameter pin 31 of the joint portion 33 so that the inlet 34a can be completely blocked from the large path 23 when the punch is not operated. desirable.
  • Lubricating oil grooves 11b communicating with the outlet 21 of the lubricating oil passage 20 may be formed on the outer surface of the punching portion 11. 4 is an explanatory diagram of the lubricating oil groove 11b.
  • the lubricating oil coming out through the outlet 21 of the lubricating oil passage 20 flows along the lubricating oil groove 11b so that the lubricating oil is evenly distributed on the outer surface of the punching part 11.
  • the lubricating oil groove 11b is preferably formed in communication with each other in the circumferential direction and the longitudinal direction of the outer surface of the punching portion 11 in terms of more evenly dispersing the lubricating oil.
  • the present invention relates to a punch for forming a hole in a thin plate made of metal or the like, and more particularly, can be supplied to a lubricated punch having excellent durability because it can supply lubricating oil to the outer surface of the punch end.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Abstract

The present invention relates to a punch for making holes in a thin sheet material made of metal and the like, the punch having excellent durability since lubricating oil can be supplied to the outer surface of the end portion of the punch. The punch comprises: a body comprising a punching part positioned at one side thereof in the longitudinal direction and a supporting part positioned at the other side thereof in the longitudinal direction; a lubricating oil passage formed to penetrate the inside of the body in the longitudinal direction, and having one or more outlets on the outer surface of the punching part; and a lubricating oil supply control means for opening and closing the outlets of the lubricating oil passage.

Description

급유식 펀치Lubricated punch
본 발명은 금속 등으로 이루어지는 얇은 판재에 구멍을 형성하기 위한 펀치에 관한 것으로서, 보다 상세하게는 펀치 단부의 외면에 윤활유를 공급해줄 수 있어 우수한 내구성을 가지는 급유식 펀치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch for forming a hole in a thin plate made of metal or the like, and more particularly, to a lubricated punch having excellent durability since it can supply lubricant to an outer surface of a punch end.
펀치는 금속, 플라스틱 등으로 이루어지는 얇은 판재에 볼트 등의 체결부재가 통과할 수 있는 구멍을 형성하기 위하여 사용되는 것으로, 판재를 수직하게 가압하여 전단력에 의해 구멍을 뚫게 된다.The punch is used to form a hole through which a fastening member such as a bolt can pass in a thin plate made of metal, plastic, or the like. The punch is vertically pressed to punch a hole by a shear force.
펀치에 의한 펀칭작업시 펀치 단부의 외면과 판재의 전단파괴면 사이에서는 큰 마찰력과 마찰력에 의한 열이 발생하기 때문에 펀치의 단부가 쉽게 마모될 수 있다.In punching operation by punch, the end of the punch can be easily worn between the outer surface of the punch end and the shear fracture surface of the plate because heat generated by the large friction force and friction force is generated.
등록번호 10-1103895의 '프레스 가공용 금형 및 프레스 가공 방법'은 상기한 것과 같은 문제점을 해결하기 위한 종래기술들 중의 하나로서, 피어스 펀치(1)의 단면 내에 펀치(1)의 말단면과 외측면을 향해 개방되는 윤활액 통로(31)를 구비하여 펀치(1)의 외면에서의 마찰력 및 마찰력에 의해 발생하는 열을 감소시킬 수 있다.'Pressing die and press working method' of 10-1103895 is one of the conventional techniques for solving the above problems, the end surface and the outer surface of the punch (1) in the cross section of the pierce punch (1) It is possible to reduce the heat generated by the frictional force and the frictional force on the outer surface of the punch 1 by having a lubricating liquid passage 31 that is open toward the.
그러나 상기 종래기술에서는 윤활액 통로(31)를 통해 흐르는 윤활액의 흐름을 조절하는 것이 쉽지 않아 펀치를 사용하지 않을 때에도 펀치의 외면으로 윤활액이 흘러나올 염려가 있다.However, in the related art, it is not easy to control the flow of the lubricating liquid flowing through the lubricating liquid passage 31, so that the lubricating liquid may flow out of the punch even when the punch is not used.
(선행기술문헌) 한국특허등록 KR10-1103895 B1(Prior art document) Korean patent registration KR10-1103895 B1
본 발명은 상기한 것과 같은 종래기술의 문제점을 해결하기 위한 것으로서, 펀치의 외면에 윤활유를 공급하여 펀치의 외면에서 발생하는 마찰력 등을 감소시킬 수 있되, 펀치의 작동 상태에 따라 윤활유의 공급을 용이하게 조절할 수 있는 급유식 펀치를 제공하는 데에 그 목적이 있다.The present invention is to solve the problems of the prior art as described above, it is possible to reduce the friction force generated on the outer surface of the punch by supplying lubricant to the outer surface of the punch, it is easy to supply the lubricant according to the operating state of the punch The purpose is to provide a lubricated punch that can be adjusted.
상기한 것과 같은 과제를 해결하기 위한 본 발명의 바람직한 실시예에 의하면, 얇은 판재에 구멍을 형성하기 위한 펀치에 있어서, 길이방향의 일측에 위치한 펀칭부와 길이방향의 타측에 위치한 지지부로 이루어지는 몸체; 상기 몸체의 내부를 길이방향으로 관통하여 형성되며, 펀칭부의 외면 상에서 1개 이상의 출구를 가지는 윤활유통로; 및 상기 윤활유통로의 출구를 개폐하는 윤활유공급조절수단;을 포함하여 구성되는 것을 특징으로 하는 급유식 펀치가 제공된다.According to a preferred embodiment of the present invention for solving the problems as described above, in the punch for forming a hole in a thin plate, a body consisting of a punching portion located on one side in the longitudinal direction and a support portion located on the other side in the longitudinal direction; A lubrication passage formed through the inside of the body in a longitudinal direction and having at least one outlet on an outer surface of the punching portion; And a lubricating oil supply adjusting means for opening and closing the outlet of the lubricating oil passage.
본 발명의 또 다른 실시예에 의하면, 상기 윤활유공급조절수단은, 상기 펀칭부의 내부를 길이방향으로 관통하는 소경로, 지지부의 내부를 길이방향으로 관통하는 대경로, 지름이 점진적으로 변화하며 소경로와 대경로를 잇는 경계부 및 상기 경계부와 출구를 연결하는 지로로 이루어지는 윤활유통로; 상기 소경로 및 경계부의 전체 구간과 대경로의 일부 구간에 걸쳐 배치되는 것으로, 외경이 상기 소경로의 지름과 일치하며 소경로보다 길게 형성되는 소경핀, 외경이 상기 소경로의 지름보다는 크고 대경로의 지름보다는 작게 형성되는 대경핀 및 지름이 점진적으로 변화하며 소경핀과 대경핀을 잇는 이음부로 이루어지는 작동핀; 및 상기 대경로 내에서 대경핀의 말단면을 가압하는 스프링;을 포함하여 구성되는 것을 특징으로 하는 급유식 펀치가 제공된다.According to another embodiment of the present invention, the lubricating oil supply adjusting means may include a small path penetrating the interior of the punching part in a longitudinal direction, a large path penetrating the interior of the support part in a longitudinal direction, and a small path in which the diameter gradually changes. A lubrication flow path consisting of a boundary portion connecting the large path and a branch connecting the boundary portion and the outlet; It is disposed over the entire section of the small path and the boundary portion and a partial section of the large path, the small diameter pin, the outer diameter is larger than the diameter of the small path, the outer diameter coincides with the diameter of the small path is larger than the diameter of the small path Large diameter pins are formed smaller than the diameter of the and gradually changing the diameter of the operation pin consisting of the joint connecting the small diameter pins and large diameter pins; And a spring pressurizing the end face of the large diameter pin in the large diameter path.
본 발명의 또 다른 실시예에 의하면, 상기 작동핀에는, 상기 소경핀을 그 길이방향으로 관통하며, 입구가 이음부의 측면에 위치하고 출구가 소경핀의 말단부 측면에 위치하는 제2윤활유통로가 형성되며, 상기 펀칭부의 말단면에는 소경로와 연통하는 홈이 형성되어 있는 것을 특징으로 하는 급유식 펀치가 제공된다.According to another embodiment of the present invention, the working pin, the small diameter pin penetrates in the longitudinal direction thereof, and a second lubrication flow path is formed in which the inlet is located on the side of the joint and the outlet is located on the distal side of the small diameter pin. The end face of the punching portion is provided with a lubrication type punch, characterized in that a groove communicating with a small path is formed.
본 발명의 또 다른 실시예에 의하면, 상기 펀칭부의 외면에는 윤활유통로의 출구와 연통하는 윤활유홈이 형성되어 있는 것을 특징으로 하는 급유식 펀치가 제공된다.According to another embodiment of the present invention, an oil supply punch is provided on the outer surface of the punching portion, a lubricating oil groove formed in communication with the outlet of the lubricating oil passage.
본 발명에 의한 급유식 펀치는 펀칭작업시 판재를 직접 통과하는 펀칭부 외면에 윤활유를 공급할 수 있어 펀칭부와 판재의 마찰에 의한 마찰력 및 마찰력에 의한 열이 발생하는 것을 감소시킬 수 있다.The lubrication type punch according to the present invention can supply lubricating oil to the outer surface of the punching part that passes directly through the plate during the punching operation, thereby reducing the generation of frictional force and frictional heat caused by friction between the punching portion and the plate.
그리고 펀칭부 외면에 대한 윤활유 공급을 작업상태에 따라 조절할 수 있다.And lubricating oil supply to the outer surface of the punching portion can be adjusted according to the working conditions.
펀칭부의 외면에 홈 또는 윤활유홈을 형성하는 경우, 윤활유가 펀칭부 외면에 보다 고르게 분산될 수 있다.When the groove or the lubricating oil groove is formed on the outer surface of the punching portion, the lubricating oil may be more evenly dispersed on the outer surface of the punching portion.
도 1 및 2는 본 발명에 의한 급유식 펀치의 단면도이다.1 and 2 are cross-sectional views of the oil type punch according to the present invention.
도 3은 상기 급유식 펀치가 제2윤활유통로를 구비하는 경우에 관한 설명도이다.FIG. 3 is an explanatory diagram for the case where the oil supply punch includes the second lubrication flow passage. FIG.
도 4는 상기 급유식 펀치가 윤활유홈을 구비하는 경우에 관한 설명도이다.4 is an explanatory view of a case where the oil supply punch is provided with a lubricating oil groove.
**도면의 주요 부분에 대한 부호의 설명**** Description of the symbols for the main parts of the drawings **
1 : 펀치 10 : 몸체1: punch 10: body
11 : 펀칭부 11a : 홈11: punching section 11a: groove
11b : 윤활유홈 12 : 지지부11b: Lube oil groove 12: Support portion
20 : 윤활유통로 21 : 출구20: Lubrication flow path 21: Exit
22 : 소경로 23 : 대경로22: small path 23: large path
24 : 경계부 25 : 지로24: boundary 25: giro
30 : 작동핀 31 : 소경핀 30: operation pin 31: small diameter pin
32 : 대경핀 33 : 이음부32: large diameter pin 33: joint
34 : 제2윤활유통로 34a : 입구34: second lubrication passage 34a: entrance
34b : 출구 40 : 스프링34b: exit 40: spring
이하에서는 본 발명의 구체적인 실시예에 대해 도면을 참고하여 자세하게 설명한다.Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 발명은 금속 등으로 이루어지는 얇은 판재에 구멍을 형성하기 위한 펀치에 관한 것으로서, 펀칭작업시 판재를 직접 통과하는 펀칭부(11)에 외면에 윤활유를 공급하여 펀칭부(11)의 외면에서 발생하는 마찰력 등을 감소시킬 수 있되, 펀치의 작동 상태에 따라 윤활유의 공급을 용이하게 조절할 수 있다는 특징을 갖는다.The present invention relates to a punch for forming a hole in a thin plate made of metal or the like, which is generated on the outer surface of the punching portion 11 by supplying lubricating oil to the outer surface of the punching portion 11 that passes directly through the sheet during the punching operation. The friction force may be reduced, but the lubricant may be easily adjusted according to the operation state of the punch.
도 1 및 도 2에는 본 발명에 의한 급유식 펀치(1)의 단면도가 도시되어 있다.1 and 2 show a cross-sectional view of the lubricated punch 1 according to the present invention.
본 발명에 의한 급유식 펀치(1)는, 몸체(10), 윤활유통로(20) 및 윤활유공급조절수단을 포함하여 이루어진다.The lubrication type punch 1 according to the present invention includes a body 10, a lubrication oil passage 20, and a lubricating oil supply adjusting means.
몸체(10)는 본 발명에 의한 급유식 펀치(1)의 외관을 형성하는 부분으로서 원통형에 가까운 형상으로 형성되어 일반적인 펀치와 거의 동일한 외형을 갖는다. 상기 몸체(10)의 길이방향 일측에는 펀칭작업시 판재를 직접 가압하며 통과하는 펀칭부(11)가 위치하고, 타측에는 펀칭부(11)를 지지하면서 프레스의 상형 등에 접합되는 지지부(12)가 위치한다.The body 10 is a part forming the external appearance of the lubricated punch 1 according to the present invention and is formed in a shape close to a cylindrical shape, and has almost the same outer shape as a general punch. On one side of the body 10 in the longitudinal direction is a punching portion 11 which presses and passes directly through the plate during the punching operation, the other side is a support portion 12 is joined to the upper mold of the press while supporting the punching portion (11) do.
윤활유통로(20)는 상기 몸체(10)의 내부를 길이방향으로 관통하여 형성되는데, 그 내부에 주기적으로 윤활유를 주입하거나 윤활유통로(20)를 외부의 윤활유탱크와 관으로 연결하여 윤활유가 채워진 상태를 유지한다. 이러한 윤활유통로(20)는 펀칭부(11)의 외면 상에서 1개 이상의 출구(21)를 갖도록 형성되어 펀칭작업시 판재와 마찰하게 되는 펀칭부(11)의 외면에 윤활유가 공급되게 됨으로써 펀칭부(11)의 외면에서 발생하는 마찰력 및 마찰력에 의한 열을 줄일 수 있다. 도 1 등에서 윤활유통로(20)의 출구(21)는 예시적으로, 펀칭부(11)의 말단면, 그리고 펀칭부(11)와 지지부(12)의 경계부분 외면에 형성되어 있는 것을 볼 수 있다.The lubricating oil passage 20 is formed by penetrating the inside of the body 10 in a longitudinal direction, and periodically injects lubricating oil or connects the lubricating oil passage 20 with an external lubricating oil tank to fill the lubricating oil. Keep it. The lubricating oil passage 20 is formed to have one or more outlets 21 on the outer surface of the punching part 11 so that lubricating oil is supplied to the outer surface of the punching part 11 which is rubbed with the plate during the punching operation. The heat generated by the frictional force and frictional force generated on the outer surface of 11) can be reduced. As shown in FIG. 1, the outlet 21 of the lubrication passage 20 is exemplarily formed at the end face of the punching part 11 and the outer surface of the boundary between the punching part 11 and the support part 12. .
그리고 상기 윤활유공급조절수단은 윤활유통로(20)의 출구(21)를 펀칭작업시에는 개방하고 그렇지 않을 때에는 폐쇄하여, 펀칭작업시에만 윤활유가 펀칭부(11)의 외면에 공급될 수 있도록 해준다.The lubricating oil supply control means opens the outlet 21 of the lubricating oil passage 20 during the punching operation and closes it when not, so that the lubricating oil can be supplied to the outer surface of the punching portion 11 only during the punching operation.
상기 윤활유공급조절수단은 보다 구체적으로, 소경로(22)와 대경로(23) 등으로 구분되는 윤활유통로(20), 작동핀(30) 및 스프링(40)을 포함하여 이루어질 수 있다.The lubricating oil supply adjusting means may more specifically include a lubricating oil passage 20, an operation pin 30, and a spring 40, which are divided into a small path 22, a large path 23, and the like.
윤활유공급조절수단을 구성할 때의 윤활유통로(20)는, 상기 펀칭부(11)의 내부를 길이방향으로 관통하는 소경로(22), 지지부(12)의 내부를 길이방향으로 관통하는 대경로(23), 지름이 점진적으로 변화하며 소경로(22)와 대경로(23)를 잇는 경계부(24) 및 상기 경계부(24)와 출구(21)를 연결하는 지로(25)로 이루어진다. 상기 소경로(22)는 그 명칭에서 알 수 있는 바와 같이 단면의 직경이 작게 형성되고, 대경로(23)는 상기 소경로(22)에 비하여 단면의 직경이 크게 형성되며, 경계부(24)는 그 지름이 소경로(22) 지름과 대경로(23) 지름 사이에서 조금씩 변화하여 외측면이 경사지게 형성된다.The lubricating oil passage 20 when constituting the lubricating oil supply adjusting means has a small path 22 penetrating the interior of the punching section 11 in the longitudinal direction, and a large path penetrating the interior of the support section 12 in the longitudinal direction. (23), the diameter gradually changes and consists of a boundary portion 24 connecting the small path 22 and the large path 23 and a branch 25 connecting the boundary portion 24 and the outlet 21. As can be seen from the name, the small path 22 has a small cross-sectional diameter, and the large path 23 has a larger cross-sectional diameter than the small path 22, and the boundary 24 The diameter changes little by little between the small path 22 diameter and the large path 23 diameter so that the outer surface is inclined.
작동핀(30)은 상기 소경로(22) 및 경계부(24)의 전체 구간과 대경로(23)의 일부 구간에 걸쳐 배치되는 것으로, 외경이 상기 소경로(22)의 지름과 일치하며 소경로(22)보다 길게 형성되는 소경핀(31), 외경이 상기 소경로(22)의 지름보다는 크고 대경로(23)의 지름보다는 작게 형성되는 대경핀(32) 및 지름이 점진적으로 변화하며 소경핀(31)과 대경핀(32)을 잇는 이음부(33)로 이루어진다.The operation pin 30 is disposed over the entire section of the small path 22 and the boundary 24 and a part of the large path 23, and the outer diameter coincides with the diameter of the small path 22 and the small path. Small diameter pin 31 is formed longer than (22), the outer diameter is larger than the diameter of the small path 22 and the large diameter pin 32 is formed smaller than the diameter of the large path 23 and the small diameter pin gradually changes It consists of a joint portion (33) connecting the 31 and the large diameter pin (32).
그리고 스프링(40)은 상기 대경로(23) 내에서 대경핀(32)의 말단면을 가압하는 역할을 한다.And the spring 40 serves to press the end surface of the large diameter pin 32 in the large path (23).
이러한 윤활유공급조절수단은 펀칭작업을 하지 않을 때에는 도 1에 도시되어 있는 것과 같이 이음부(33)가, 경계부(24)와 지로(25)가 만나는 부분 즉, 지로(25)의 입구(25a)를 완전히 막아 지로(25)로 윤활유가 유입되지 않음으로써 윤활유가 펀칭부(11)의 외면에 공급되지 않는다. 이때, 소경로(22)의 길이보다 길게 형성되는 소경핀(31)의 말단부는 펀칭부(11)의 말단면에서 돌출된다.When the lubricating oil supply control means does not perform the punching operation, as shown in FIG. 1, a portion where the joint 33 meets the boundary 24 and the giro 25, that is, the inlet 25a of the giro 25 is shown. The lubricant is not supplied to the outer surface of the punching portion 11 by completely preventing the lubricant from flowing into the furnace 25. At this time, the distal end of the small diameter pin 31 formed longer than the length of the small path 22 is protruded from the end surface of the punching portion (11).
반면, 본 발명에 의한 펀치를 이용하여 펀칭작업을 할 때에는 도 2에 도시되어 있는 것과 같이 펀치가 판재를 가압함에 의해 펀칭부(11)의 말단면 상에서 돌출된 소경핀(31)이 스프링(40)의 탄성력 이상으로 가압되어 작동핀(30)이 대경로(23) 방향으로 이동하게 된다. 이에 따라, 이음부(33) 외측면과 지로(25)의 입구(25a) 사이에 틈이 발생하게 되어 대경로(23) 내의 윤활유가 지로(25)를 지나 펀칭부(11)의 외면에 공급될 수 있다.On the other hand, when the punching operation using the punch according to the present invention, as shown in Figure 2, the small diameter pin 31 protruding from the end surface of the punching portion 11 by pressing the plate, the spring 40 The pressure is greater than the elastic force of the) actuating pin 30 is moved in the large path (23) direction. Accordingly, a gap is generated between the outer surface of the joint portion 33 and the inlet 25a of the branch 25 so that the lubricant oil in the large path 23 passes through the branch 25 and is supplied to the outer surface of the punching portion 11. Can be.
펀칭작업이 완료되어 소경핀(31)에 대한 가압이 해제되면 스프링(40)의 탄성력에 의하여 작동핀(30)이 원위치로 되돌아가 다시 지로(25)의 입구(25a)는 다시 폐쇄된다.When the punching operation is completed and the pressing on the small diameter pin 31 is released, the operation pin 30 is returned to its original position by the elastic force of the spring 40 and the inlet 25a of the branch 25 is closed again.
경계부(24)의 내측면과 이음부(33)의 외측면이 서로 밀착될 수 있도록 경계부(24) 내측면의 경사각도와 이음부(33) 외측면의 경사각도는 동일하게 형성되고, 소경핀(31)이 가압되지 않을 때 대경로(23)와 지로(25)가 서로 완전하게 차단될 수 있도록 지로(25)의 입구(25a)는 경계부(24) 중에서도 소경로(22) 부분에 치우치게 형성되는 것이 바람직하다.The inclination angle of the inner surface of the boundary portion 24 and the inclination angle of the outer surface of the joint portion 33 are formed in the same manner so that the inner surface of the boundary portion 24 and the outer surface of the joint portion 33 are in close contact with each other. When the large path 23 and the branch 25 are completely blocked from each other when the 31 is not pressurized, the inlet 25a of the branch 25 is formed to be biased in the portion of the small path 22 among the boundaries 24. It is preferable.
상기 작동핀(30)에는, 소경핀(31)을 그 길이방향으로 관통하며, 입구(34a)가 이음부(33)의 측면에 위치하고 출구(34b)가 소경핀(31)의 말단부 측면에 위치하는 제2윤활유통로(34)가 형성될 수 있고, 이때 상기 펀칭부(11)의 말단면에는 소경로(22)와 연통하는 홈(11a)이 형성된다. 도 3에는 이러한 경우에 관한 설명도가 도시되어 있다.The working pin 30 penetrates through the small diameter pin 31 in the longitudinal direction thereof, and the inlet 34a is located at the side of the joint portion 33 and the outlet 34b is located at the distal side of the small diameter pin 31. A second lubrication flow path 34 may be formed, and in this case, a groove 11a communicating with the small path 22 is formed at the end surface of the punching part 11. 3 is an explanatory diagram for this case.
상기 소경로(22) 내에는 소경핀(31)이 위치하여 윤활유가 쉽게 흐를 수 없는데, 위와 같이 소경핀(31) 내에 제2윤활유통로(34)를 형성하면 소경로(22)를 통해서도 윤활유가 흐를 수 있어 펀칭부(11)의 말단면에 윤활유가 공급될 수 있다. 펀칭부(11)의 말단면에서 소경로(22)와 연통하는 홈(11a)은, 출구(34b)가 소경핀(31)의 말단부 측면에 위치하는 제2윤활유통로(34)와도 연통하여 제2윤활유통로(34)를 통해 공급된 윤활유를 펀칭부(11)의 말단면에 고르게 분산시키는 역할을 하게 된다.The small diameter pin 31 is located in the small path 22 so that the lubricating oil cannot easily flow. When the second lubrication flow path 34 is formed in the small diameter pin 31 as described above, the lubricating oil is also supplied through the small path 22. It may flow, so that lubricating oil may be supplied to the end surface of the punching portion (11). The groove 11a communicating with the small path 22 at the end face of the punching part 11 is also in communication with the second lubrication flow path 34 whose outlet 34b is located at the distal side of the small pin 31. 2 serves to evenly distribute the lubricating oil supplied through the lubrication passage 34 to the end surface of the punching portion (11).
제2윤활유통로(34)의 입구(34a)는, 펀치가 작동하지 않을 때에는 도 3의 (a)에 도시되어 있는 것과 같이 경계부(24)와 대경로(23)가 서로 차단되어 경계부(24)로 윤활유가 공급되지 않기 때문에 제2윤활유통로(34)로도 윤활유가 공급되지 않고, 펀치가 작동하면서 판재에 의해 작동핀(30)이 가압될 때에는 경계부(24)와 대경로(23)가 연통하면서 경계부(24)로 윤활유가 공급되어 제2윤활유통로(34)로 윤활유가 공급될 수 있다.The inlet 34a of the second lubrication flow passage 34 has a boundary portion 24 in which the boundary portion 24 and the large path 23 are blocked from each other, as shown in FIG. Since the lubricating oil is not supplied to the furnace, the lubricating oil is not supplied to the second lubrication oil passage 34, and when the operation pin 30 is pressed by the plate while the punch is operated, the boundary portion 24 and the large passage 23 communicate with each other. Lubricating oil may be supplied to the boundary part 24, and the lubricating oil may be supplied to the second lubrication passage 34.
제2윤활유통로(34)의 입구(34a)는, 펀치가 작동하지 않을 때 대경로(23)와 서로 완전하게 차단될 수 있도록 이음부(33) 중에서도 소경핀(31) 부분으로 치우치게 위치하는 것이 바람직하다.The inlet 34a of the second lubrication passage 34 is biased toward the small diameter pin 31 of the joint portion 33 so that the inlet 34a can be completely blocked from the large path 23 when the punch is not operated. desirable.
상기 펀칭부(11)의 외면에는 윤활유통로(20)의 출구(21)와 연통하는 윤활유홈(11b)이 형성될 수 있다. 도 4에는 상기 윤활유홈(11b)에 관한 설명도가 도시되어 있다.Lubricating oil grooves 11b communicating with the outlet 21 of the lubricating oil passage 20 may be formed on the outer surface of the punching portion 11. 4 is an explanatory diagram of the lubricating oil groove 11b.
윤활유통로(20)의 출구(21)를 통해 나온 윤활유는 윤활유홈(11b)을 따라 흐르면서 펀칭부(11) 외면 상에 윤활유가 고르게 분산되게 된다.The lubricating oil coming out through the outlet 21 of the lubricating oil passage 20 flows along the lubricating oil groove 11b so that the lubricating oil is evenly distributed on the outer surface of the punching part 11.
윤활유홈(11b)은 도 4에 도시되어 있는 것과 같이, 펀칭부(11) 외면의 원주방향 및 길이방향으로 서로 연통하도록 형성하는 것이 윤활유를 보다 고르게 분산시키는 측면에서 바람직하다.As shown in Fig. 4, the lubricating oil groove 11b is preferably formed in communication with each other in the circumferential direction and the longitudinal direction of the outer surface of the punching portion 11 in terms of more evenly dispersing the lubricating oil.
이상에서는 본 발명의 구체적인 실시예에 대해 도면을 참고하여 설명하였으나, 청구범위의 기술적 사상으로부터 벗어나지 않는 범위 내에서 당업자가 본 발명을 다양하게 변형하여 실시할 수 있을 것이며, 이 또한 청구범위의 기재에 따라 본 발명의 권리범위에 속한다고 할 것이다.While specific embodiments of the present invention have been described with reference to the drawings, those skilled in the art will be able to practice various modifications of the present invention without departing from the spirit of the claims. Accordingly, it will be said to belong to the scope of the present invention.
본 발명은 금속 등으로 이루어지는 얇은 판재에 구멍을 형성하기 위한 펀치에 관한 것으로서, 보다 상세하게는 펀치 단부의 외면에 윤활유를 공급해줄 수 있어 우수한 내구성을 가지는 급유식 펀치에 이용 가능하다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch for forming a hole in a thin plate made of metal or the like, and more particularly, can be supplied to a lubricated punch having excellent durability because it can supply lubricating oil to the outer surface of the punch end.

Claims (4)

  1. 얇은 판재에 구멍을 형성하기 위한 펀치에 있어서,In the punch for forming a hole in a thin plate,
    길이방향의 일측에 위치한 펀칭부(11)와 길이방향의 타측에 위치한 지지부(12)로 이루어지는 몸체(10);Body 10 consisting of a punching portion 11 located on one side of the longitudinal direction and the support portion 12 located on the other side in the longitudinal direction;
    상기 몸체(10)의 내부를 길이방향으로 관통하여 형성되며, 펀칭부(11)의 외면 상에서 1개 이상의 출구(21)를 가지는 윤활유통로(20); 및A lubrication passage 20 formed through the inside of the body 10 in a longitudinal direction and having at least one outlet 21 on an outer surface of the punching portion 11; And
    상기 윤활유통로(20)의 출구(21)를 개폐하는 윤활유공급조절수단;을 포함하여 구성되는 것을 특징으로 하는 급유식 펀치.Lubricating oil type punch comprising a; lubricating oil supply adjusting means for opening and closing the outlet 21 of the lubricating oil passage (20).
  2. 제1항에 있어서,The method of claim 1,
    상기 윤활유공급조절수단은,The lubricating oil supply adjusting means,
    상기 펀칭부(11)의 내부를 길이방향으로 관통하는 소경로(22), 지지부(12)의 내부를 길이방향으로 관통하는 대경로(23), 지름이 점진적으로 변화하며 소경로(22)와 대경로(23)를 잇는 경계부(24) 및 상기 경계부(24)와 출구(21)를 연결하는 지로(25)로 이루어지는 윤활유통로(20);The small path 22 penetrating the interior of the punching portion 11 in the longitudinal direction, the large path 23 penetrating the interior of the support portion 12 in the longitudinal direction, the diameter gradually changes, and the small path 22 and A lubrication flow path (20) comprising a boundary portion (24) connecting large paths (23) and a branch passage (25) connecting the boundary portion (24) and an outlet (21);
    상기 소경로(22) 및 경계부(24)의 전체 구간과 대경로(23)의 일부 구간에 걸쳐 배치되는 것으로, 외경이 상기 소경로(22)의 지름과 일치하며 소경로(22)보다 길게 형성되는 소경핀(31), 외경이 상기 소경로(22)의 지름보다는 크고 대경로(23)의 지름보다는 작게 형성되는 대경핀(32) 및 지름이 점진적으로 변화하며 소경핀(31)과 대경핀(32)을 잇는 이음부(33)로 이루어지는 작동핀(30); 및It is disposed over the entire section of the small path 22 and the boundary portion 24 and a partial section of the large path 23, the outer diameter is formed to match the diameter of the small path 22 and formed longer than the small path 22. Small diameter pin 31, the outer diameter is larger than the diameter of the small path 22 and the large diameter pin 32 is formed smaller than the diameter of the large path 23 and the diameter gradually changes the small diameter pin 31 and large diameter pin An actuating pin (30) consisting of a joint (33) connecting the 32; And
    상기 대경로(23) 내에서 대경핀(32)의 말단면을 가압하는 스프링(40);을 포함하여 구성되는 것을 특징으로 하는 급유식 펀치.Oil-punching punch, characterized in that it comprises a; a spring (40) for pressing the end surface of the large diameter pin (32) in the large path (23).
  3. 제2항에 있어서,The method of claim 2,
    상기 작동핀(30)에는, 상기 소경핀(31)을 그 길이방향으로 관통하며, 입구(34a)가 이음부(33)의 측면에 위치하고 출구(34b)가 소경핀(31)의 말단부 측면에 위치하는 제2윤활유통로(34)가 형성되며,The small pin 31 passes through the small pin 31 in its longitudinal direction, and the inlet 34a is located at the side of the joint 33 and the outlet 34b is at the end side of the small pin 31. A second lubrication passage 34 is formed is located,
    상기 펀칭부(11)의 말단면에는 소경로(22)와 연통하는 홈(11a)이 형성되어 있는 것을 특징으로 하는 급유식 펀치.Oil-punching punch, characterized in that the groove (11a) in communication with the small path (22) is formed on the end surface of the punching portion (11).
  4. 제1항에 있어서,The method of claim 1,
    상기 펀칭부(11)의 외면에는 윤활유통로(20)의 출구(21)와 연통하는 윤활유홈(11b)이 형성되어 있는 것을 특징으로 하는 급유식 펀치.Oil-punching punch, characterized in that the outer surface of the punching portion 11 is formed with a lubricating oil groove (11b) in communication with the outlet 21 of the lubricating oil passage (20).
PCT/KR2015/014066 2015-11-23 2015-12-22 Lubricated punch WO2017090818A1 (en)

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KR1020150163704A KR20170059592A (en) 2015-11-23 2015-11-23 Punch supplying lubricant oil

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN113579064A (en) * 2021-08-01 2021-11-02 合肥美菱有色金属制品有限公司 Stepped flaring punch structure and reaming process thereof

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Publication number Priority date Publication date Assignee Title
CN117531921A (en) * 2023-11-24 2024-02-09 宁波可挺汽车零部件有限公司 Stamping equipment for automobile rear lower control arm

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JPH07112227A (en) * 1993-10-18 1995-05-02 Hidaka Seiki Kk Die device
JPH10109125A (en) * 1996-10-02 1998-04-28 Denso Corp Press die having oil supply means to punching shearing face
JP2001137974A (en) * 1999-11-16 2001-05-22 Matsushita Electric Ind Co Ltd Die unit
JP2009082976A (en) * 2007-10-02 2009-04-23 Hitachi Appliances Inc Press forming apparatus
KR200446799Y1 (en) * 2009-04-16 2009-12-03 한국폴리텍7대학 산학협력단 Press Mold Lubricant Supply Device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07112227A (en) * 1993-10-18 1995-05-02 Hidaka Seiki Kk Die device
JPH10109125A (en) * 1996-10-02 1998-04-28 Denso Corp Press die having oil supply means to punching shearing face
JP2001137974A (en) * 1999-11-16 2001-05-22 Matsushita Electric Ind Co Ltd Die unit
JP2009082976A (en) * 2007-10-02 2009-04-23 Hitachi Appliances Inc Press forming apparatus
KR200446799Y1 (en) * 2009-04-16 2009-12-03 한국폴리텍7대학 산학협력단 Press Mold Lubricant Supply Device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113579064A (en) * 2021-08-01 2021-11-02 合肥美菱有色金属制品有限公司 Stepped flaring punch structure and reaming process thereof

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