KR20020017616A - Dry Core Drilling Machine's Bit - Google Patents

Dry Core Drilling Machine's Bit Download PDF

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Publication number
KR20020017616A
KR20020017616A KR1020000051085A KR20000051085A KR20020017616A KR 20020017616 A KR20020017616 A KR 20020017616A KR 1020000051085 A KR1020000051085 A KR 1020000051085A KR 20000051085 A KR20000051085 A KR 20000051085A KR 20020017616 A KR20020017616 A KR 20020017616A
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KR
South Korea
Prior art keywords
shank
core drill
drill bit
bit
core drilling
Prior art date
Application number
KR1020000051085A
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Korean (ko)
Inventor
김종일
Original Assignee
김종일
주식회사 동서종합기계
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Application filed by 김종일, 주식회사 동서종합기계 filed Critical 김종일
Priority to KR1020000051085A priority Critical patent/KR20020017616A/en
Publication of KR20020017616A publication Critical patent/KR20020017616A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28DWORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/041Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2226/00Materials of tools or workpieces not comprising a metal
    • B23B2226/75Stone, rock or concrete
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B51/00Tools for drilling machines
    • B23B51/04Drills for trepanning

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

PURPOSE: A dry core drilling bit is provided to extend the life of a core drilling bit by discharging dust and frictional heat generated when drilling cement or concrete and to improve work efficiency by completing a cutting work easily by removing resistance by discharging air through an exhaust hole. CONSTITUTION: A dry core drilling bit(1) comprises many diamond tips(8) arranged around the lower end of a cylindrical shank(6) at regular intervals, at least one or more holes formed on the outside of the shank(6) to discharge impurities or compressed air easily, and at least one or more exhaust holes(2) incised in a spiral shape from the lower part to the upper part on the outside of the shank(6).

Description

건식 코어드릴용 비트 { Dry Core Drilling Machine's Bit }Dry Core Drilling Machine's Bit}

본 발명은 코어드릴용 비트에 관한 것으로, 더욱 상세하게는 천공작업시에 발생하는 이물질과 압축공기의 배출이 용이하도록 한 건식 코어드릴용 비트에 관한 것이다.The present invention relates to a core drill bit, and more particularly, to a dry core drill bit for facilitating the discharge of foreign matter and compressed air generated during drilling.

일반적인 종래의 코어드릴용 비트는 도 4에서 도시된 바와 같이 원통형 샹크(6')의 외주면에 천공작업중에 발생되는 분진과 마찰열등을 배출하기 위한 장공의 배출공(2')이 형성되며, 하단 둘레에는 다수개의 다이어몬드팁(8')이 일정간격으로 구비되어 있는것으로, 석재 및 콘크리트 구조물과 같은 피천공물(200')에 대한 천공작업을 실시하게 되면 상기 다이어몬드팁(8')의 저면부가 피천공물(200')과의 마찰접촉에 의해 천공작업이 이루어지게 되며 이와같은 천공작업이 진행되는 과정에서 발생되는 다량의 미세한 분진과 공기, 마찰열등은 상기 샹크(6')의 외주면에 형성된 장공의 배출공(2')을 통해 배출되고 천공된 피천공물(200')은 샹크(6')의 내부에 끼워져 배출되는 것이다.As shown in FIG. 4, a conventional conventional drill bit for core drill is formed on the outer circumferential surface of the cylindrical shank 6 ′ with a long hole discharge hole 2 ′ for discharging dust and friction heat generated during a drilling operation. The circumference is provided with a plurality of diamond tips (8 ') at a predetermined interval, when the drilling work for the punched object (200') such as stone and concrete structure is the bottom surface of the diamond tip (8 ') The punching work is performed by the friction contact with the additional perforated object 200 ', and a large amount of fine dust, air, friction heat, etc. generated during the drilling work is formed on the outer circumferential surface of the shank 6'. The punched object 200 'is discharged through the discharge hole 2' of the long hole and is inserted into the shank 6 'and discharged.

그러나 상기와 같은 종래의 코어드릴용 비트는 도 5에 도시된 바와 같이 상기 샹크(6')의 장공의 배출공(2')이 형성되지않은 부분이 피천공물(200')보다 깊이 들어가게되는 천공작업의 막바지단계에 이르러서는 발생된 분진과 공기, 마찰열등이 코어드릴용 비트(1')의 외부로 배출이 불가능하게 되어 상기 코어드릴용 비트(1')의 내부에 분진이 누적되고 또한 공기가 압축되므로 저항력이 생겨 천공효율이 떨어지게 되며, 더 나아가서는 코어드릴의 회전이 정지되어 천공작업이 불가능한 상태에까지 이르게 되는 등의 문제점이 있는 것이다.However, in the conventional core drill bit as described above, as shown in FIG. 5, a portion where the discharge hole 2 'of the long hole of the shank 6' is not formed is deeper than the punched object 200 '. At the end of the work, the generated dust, air and friction heat cannot be discharged to the outside of the core drill bit 1 ', so that dust accumulates inside the core drill bit 1' and air Since there is a problem that the compression force is reduced because the compression force is generated, and furthermore, the rotation of the core drill is stopped to reach a state in which the drilling operation is impossible.

본 발명은 상기와 같은 종래 기술의 문제점을 해소하기위해 안출된 것으로, 그 기술적 과제는 샹크의 배출공을 통해 천공작업시 발생된 분진, 마찰열, 공기등의 배출기능이 천공작업의 막바지단계에서도 원활히 이루어질수 있도록하여 천공작업이 용이하도록 한 건식 코어드릴용 비트를 제공하는데 있다.The present invention has been made to solve the problems of the prior art as described above, the technical problem is that the discharge function of dust, friction heat, air, etc. generated during the drilling operation through the discharge hole of the shank smoothly at the last stage of the drilling operation To provide a bit for a dry core drill to facilitate the drilling work.

상기와 같은 본 발명의 기술적 과제는 샹크의 외주면에 하부측에서부터 상단부에 소정의 각도를 주어 나선형으로 절개된 배출공이 적어도 1개이상 구성되는 건식 코어드릴용비트를 제공하므로써 달성될 수 있는 것이다.The technical problem of the present invention as described above can be achieved by providing a bit for a dry core drill that is composed of at least one discharge hole spirally cut by giving a predetermined angle from the lower side to the upper end on the outer peripheral surface of the shank.

도 1은 본 발명의 사시도1 is a perspective view of the present invention

도 2는 본 발명의 일측단면도2 is a cross-sectional side view of the present invention

도 3은 본 발명의 사용상태도3 is a state diagram used in the present invention

도 4는 종래 코어드릴용 비트의 사시도4 is a perspective view of a conventional core drill bit

도 5는 종래 코어드릴용 비트의 실시예의 단면도5 is a cross-sectional view of an embodiment of a conventional core drill bit.

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

1 : 코어드릴용 비트 2 : 배출공1: bit for core drill 2: discharge hole

21 : 상단부 4 : 결합부21: upper portion 4: coupling portion

6 : 샹크 8 : 다이아몬드팁6: shank 8: diamond tip

200 : 피천공물 300 : 코어드릴 본체200: punched object 300: core drill body

상기와 같은 특징을 갖는 본 발명의 바람직한 실시예를 첨부된 도면을 토대로 상세하게 설명하면 다음과 같다.When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention having the above characteristics as follows.

도 1은 본 발명에 의한 건식 코어드릴용 비트의 사시도이고 도 2는 본 발명에 의한 건식 코어드릴용 비트의 일측 단면도이며 도 3은 본 발명에 의한 건식 코어드릴용 비트의 사용상태도이고 도 4는 종래 코어드릴용 비트의 사시도, 도 5는 종래 코어드릴용 비트의 실시예의 단면도이다.1 is a perspective view of a dry core drill bit according to the present invention, Figure 2 is a cross-sectional view of one side of the dry core drill bit according to the present invention, Figure 3 is a state diagram used in the dry core drill bit according to the present invention and Figure 4 is A perspective view of a conventional core drill bit, FIG. 5 is a sectional view of an embodiment of a conventional core drill bit.

도 1과 도 3에 도시된 바와 같이, 본 발명에 의한 건식 코어드릴용 비트(1)는 코어드릴본체(300)와 결합되는 결합부(4)와 샹크(6)의 외주면에 하부측에서부터 상단부(21)로 절개된 배출공(2)과 상기 샹크(6)의 하단 둘레에 일정간격으로 형성된 다수개의 다이아몬드팁(8)으로 구성된다.As shown in Figures 1 and 3, the dry core drill bit 1 according to the present invention is the upper end portion from the lower side to the outer peripheral surface of the engaging portion 4 and the shank 6 coupled to the core drill body 300 It is composed of a plurality of diamond tips (8) formed at regular intervals around the lower end of the discharge hole (2) and the shank (6) cut into (21).

상기 배출공(2)은 도 1에서 도시된 바와같이 천공작업시 샹크(6) 내부에서 발생되는 분진과 마찰열 등을 후방으로 용이하게 배출할 수 있도록 소정의 각도를 주어 나선형으로 절개되어 형성된것으로 상기 코어드릴용 비트(1)를 코어드릴본체(300)와 결합한 후 천공작업을 실시하게 되는데 이는 상기 코어드릴비트(1)가 일방향으로 고속으로 회전되면서 상기 코어드릴 비트(1)의 하단에 형성된 다이아몬드팁(8)이 피천공물(200)과 마찰접촉하여 천공작업이 이루어지게 되며 이때 고속회전되는 상기 코어드릴 비트(1)에 형성된 배출공(2)의 나선구조로 인해 후방으로 회전풍이 발생하여 코어드릴 비트(1) 내부의 공기가 외부로 배출되며 이에 동반되어 상기 코어드릴 비트(1) 내부에 누적된 피천공물(200)의 분진과 마찰열등이 코어드릴 비트(1)의 외부로 신속히 배출되는 것이다.The discharge hole (2) is formed by cutting in a spiral at a predetermined angle so that dust and frictional heat generated inside the shank 6 can be easily discharged to the rear during the drilling operation as shown in FIG. The core drill bit 1 is combined with the core drill body 300 to perform a drilling operation, which is a diamond formed at the bottom of the core drill bit 1 while the core drill bit 1 rotates at a high speed in one direction. The tip 8 is in frictional contact with the perforated object 200, and a drilling operation is performed. At this time, a rotational wind is generated to the rear due to the spiral structure of the discharge hole 2 formed in the core drill bit 1 that rotates at a high speed. The air inside the drill bit 1 is discharged to the outside, and the dust and frictional heat of the punched object 200 accumulated in the core drill bit 1 are quickly discharged to the outside of the core drill bit 1. It will be.

또한 종래에 비해 배출공(2)이 상단부까지 형성되어 천공작업의 막바지단계에 이르러 코어드릴 비트(1) 내부에 피천공물(200)이 만충되어도 원활한 배출기능에 의해 압축공기나 분진에의한 저항력이 제거되므로 천공작업이 용이하게 되는 것이다.In addition, the discharge hole (2) is formed up to the upper end than in the prior art to reach the end stage of the drilling operation, even if the perforated object 200 is filled inside the core drill bit (1) by the smooth discharge function by the resistance to the compressed air or dust Since it is removed, the drilling operation is facilitated.

상기 다이아몬드팁(8)은 상기 샹크(6)의 하단 둘레에 다수개가 일정간격으로 구비된것으로 강도가 강한 공업용 다이아몬드를 사용하므로써 절삭성능을 월등히 향상시킨 것이다.The diamond tip 8 is provided with a plurality of predetermined intervals around the lower end of the shank 6 to improve the cutting performance by using a strong industrial diamond.

상기 나사결합부(4)에는 코어드릴본체(300)가 결합되며 절삭작업중에 이탈되지 않도록 코어드릴본체(300)의 회전방향과 상반되게 나사가 형성된 것이다.The screw coupling portion 4 is coupled to the core drill body 300 is a screw is formed opposite to the rotation direction of the core drill body 300 so as not to be separated during the cutting operation.

본 발명에 의한 코어드릴용 비트는 그 외주면에 하부측에서부터 상단부에 나선형으로 배출공이 형성되므로 시멘트나 콘크리트등의 천공작업시에 발생되는 피천공물의 분진과 마찰열을 용이하게 배출할 수 있어 상기 코어드릴용 비트의 수명을 연장시켜주며, 또한 상기 코어드릴용 비트의 내부에 피천공물이 만충되더라도 상기배출공이 상단까지 형성된 관계로 공기의 배출이 원활하므로 작업자가 용이하게 천공작업을 마무리 할 수 있어 작업능률을 향상시켜 줄 수 있는 등의 효과가 제공되는 것이다.The core drill bit according to the present invention has a discharge hole is formed spirally from the lower side to the upper end on the outer peripheral surface of the core drill bit can easily discharge dust and frictional heat of the object to be generated during the drilling work such as cement or concrete, the core drill It extends the service life of the drill bit, and even though the drilled object is filled inside the core drill bit, the air is smoothly discharged because the discharge hole is formed to the upper end, so that the operator can easily finish the drilling work. The effect is to be provided such as to improve.

Claims (2)

일정두께를 갖는 원통형상의 샹크(6)의 하단 둘레에 다수개의 다이아몬드 팁(8)이 일정간격으로 배열되고 상기 샹크(6)의 외주면에는 천공작업시 내부에 쌓이는 이물질이나 압축공기가 용이하게 배출되도록 적어도 1개이상의 장공이 형성된 코어드릴용 비트(1)에 있어서;A plurality of diamond tips 8 are arranged at regular intervals around the bottom of the cylindrical shank 6 having a predetermined thickness, and the outer peripheral surface of the shank 6 so as to easily discharge foreign matter or compressed air accumulated therein during drilling. In the core drill bit (1) in which at least one or more holes are formed; 상기 샹크(6)의 외주면에는 하부측에서부터 상단부에 나선형상으로 절개되어 형성된 배출공(2)이 적어도 1개이상이 구비됨을 특징으로 하는 코어드릴용 비트.Bits for core drill, characterized in that the outer circumferential surface of the shank (6) is provided with at least one discharge hole (2) formed in a spiral cut from the lower side to the upper end. 상기 제 1항에 있어서, 상기 샹크(6)의 외주면에는 하측부에서 부터 상단부에 직선형상으로 절개되어 형성된 배출공(2)이 적어도 1개이상 구비됨을 특징으로 하는 코어드릴용 비트.The core drill bit as set forth in claim 1, characterized in that at least one outlet hole (2) is formed on the outer circumferential surface of the shank (6) in a straight line from the lower side to the upper end.
KR1020000051085A 2000-08-31 2000-08-31 Dry Core Drilling Machine's Bit KR20020017616A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100722825B1 (en) * 2007-01-20 2007-05-29 주식회사 일성엔지니어링 The multi angle boring machine attached to a excavator and its excavating method of under the ground
KR200481964Y1 (en) * 2015-07-27 2016-12-01 석대환 Core bit For Core Drill

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0614290U (en) * 1992-07-27 1994-02-22 株式会社呉英製作所 Core bit
JPH0674688U (en) * 1993-03-30 1994-10-21 天龍製鋸株式会社 Core bit for drilling
JP2000213269A (en) * 1999-01-20 2000-08-02 Dgp:Kk Non-work type special shank

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0614290U (en) * 1992-07-27 1994-02-22 株式会社呉英製作所 Core bit
JPH0674688U (en) * 1993-03-30 1994-10-21 天龍製鋸株式会社 Core bit for drilling
JP2000213269A (en) * 1999-01-20 2000-08-02 Dgp:Kk Non-work type special shank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100722825B1 (en) * 2007-01-20 2007-05-29 주식회사 일성엔지니어링 The multi angle boring machine attached to a excavator and its excavating method of under the ground
KR200481964Y1 (en) * 2015-07-27 2016-12-01 석대환 Core bit For Core Drill

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