KR100426128B1 - Drill - Google Patents
Drill Download PDFInfo
- Publication number
- KR100426128B1 KR100426128B1 KR10-2001-0031616A KR20010031616A KR100426128B1 KR 100426128 B1 KR100426128 B1 KR 100426128B1 KR 20010031616 A KR20010031616 A KR 20010031616A KR 100426128 B1 KR100426128 B1 KR 100426128B1
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- South Korea
- Prior art keywords
- drill
- hole
- cutting oil
- cutting
- blade portion
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2250/00—Compensating adverse effects during turning, boring or drilling
- B23B2250/12—Cooling and lubrication
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/408—Spiral grooves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
본 발명은 초기 드릴작업시 가공물과 선단부에 절삭유의 공급을 원활하게 하여 선단부의 주절삭날과 웨브절삭날의 마모를 극소화시키는 동시에 선단부에 마모로 인한 열화현상을 미연에 방지하여 드릴의 수명을 크게 연장시킨 드릴에 관한 것이다.The present invention facilitates the supply of cutting oil to the workpiece and the tip during initial drilling, thereby minimizing abrasion of the main cutting edge and the web cutting edge of the tip and at the same time preventing deterioration due to wear on the tip, thus greatly improving the life of the drill. It relates to an extended drill.
특히, 본 발명은 주절삭날과 웨브절삭날을 가진 선단부와; 칩배출 및 절삭유 공급을 위한 나선형홈 형상의 플루트가 구비된 드릴날부와; 드릴링머시인의 드릴처크에 결합되는 자루부와; 상기 자루부와 드릴날부의 중심을 관통하여 형성된 절삭유공; 등으로 구성된 드릴에 있어서, 상기 드릴날부(20)의 플루트(21)와 외주면부 22) 사이의 날(23)에서 수직으로 수직유공(24)을 형성하는 한편, 상기 드릴날부 20)의 외주면부(22)에서 수직유공(24)과 절삭유공(40)이 연통되게 수평연결공(25)을 형성한 다음, 상기 수평연결공(25)을 드릴날부(20)의 외주면부(22)에서 차단하여 절삭유공(40)을 따라 공급된 절삭유가 드릴의 진행방향과 동일하게 형성된 수직유공(24)으로 분출되게 한 특징이 있다.In particular, the present invention includes a tip having a major cutting edge and a web cutting edge; A drill blade portion provided with a flute of a spiral groove shape for chip discharge and cutting oil supply; Bag portion coupled to the drill chuck of the drilling machine; A cutting oil hole formed through the center of the bag portion and the drill blade portion; In the drill consisting of the back, the vertical perforations 24 are formed vertically at the blade 23 between the flute 21 and the outer peripheral surface portion 22 of the drill blade portion 20, while the outer peripheral surface portion of the drill blade portion 20 In (22) to form a horizontal connection hole 25 in communication with the vertical hole 24 and the cutting oil hole 40, the horizontal connecting hole 25 is cut off at the outer peripheral surface portion 22 of the drill blade portion 20 Thus, the cutting oil supplied along the cutting hole 40 is ejected into the vertical hole 24 formed in the same direction as the direction of travel of the drill.
Description
본 발명은 드릴에 관한 것으로서, 더욱 상세하게는 드릴의 진행방향과 동일한 방향으로 절삭유가 분출되도록 하여 절삭유 부족으로 인한 드릴날부의 마모 및 열화현상을 방지한 드릴에 관한 것이다.The present invention relates to a drill. More particularly, the present invention relates to a drill in which cutting oil is ejected in the same direction as the direction in which the drill travels, thereby preventing wear and deterioration of the drill portion due to the lack of cutting oil.
일반적으로, 가공물의 구멍을 천공하는데 사용되는 드릴의 구조를 보면 도 1 과 같이 크게 나누어 주절삭날과 웨브절삭날을 가진 선단부(110)와; 칩배출 및 절삭유 공급을 위한 나선형홈 형상의 플루트가 구비된 드릴날부(120)와; 드릴링머시인의 드릴처크에 결합되는 자루부(130)와; 상기 자루부(130)와 드릴날부(120)의 중심을 관통하여 선단부(110) 상단 양측의 분기공(141)으로 분기되는 절삭유공(140) 등으로 구비되어진다. 그리고, 상기 절삭유공(140)은 선단부(110)의 상단 양측으로 분기되는 것이 아니라 플루트 내측으로 형성된 것도 있으며, 선단부의 설치홈부에 드릴날부가 착탈가능하게 설치되는 인서트 드릴인 경우에도 상술한 바와 같이 선단부의 상단 양측으로 절삭유공이 형성된 것이 있다.In general, when looking at the structure of the drill used to drill the hole of the workpiece divided into a major cutting edge and a web cutting edge 110 as shown in Figure 1; A drill blade unit 120 having a flute of a spiral groove shape for chip discharge and cutting oil supply; Bag portion 130 coupled to the drill chuck of the drilling machine; Through the center of the bag 130 and the drill blade 120 is provided with a cutting oil hole 140 and the like branched to the branch holes 141 on both sides of the top end 110. In addition, the cutting oil hole 140 is not branched to both sides of the upper end of the tip portion 110, but is also formed inside the flute, as described above, even in the case of an insert drill in which the drill blade is detachably installed in the installation groove of the tip portion. Cutting oil holes are formed on both sides of the upper end of the tip portion.
그러나, 상기와 같은 종래의 드릴은 절삭유공(140)에 분기공(141)이 Y형상으로 형성되어 분기공(141)을 통해 분기된 절삭유가 드릴의 진행방향과 달리 소정의 각도를 가지고 양측으로 퍼지기 때문에 초기 드릴작업시 가공물(150)과 선단부 (110)에 절삭유가 공급되지 않아 선단부(110)의 주절삭날과 웨브절삭날의 마모가 극심해짐과 동시에 선단부(110)에 열화현상이 발생하여 드릴의 수명을 크게 단축시키는 등의 문제점이 있었다.However, in the conventional drill as described above, since the branch hole 141 is formed in the Y shape in the cutting oil hole 140 and the cutting oil branched through the branch hole 141 is spread at both sides with a predetermined angle unlike the direction in which the drill proceeds. When the initial drilling operation, cutting oil is not supplied to the workpiece 150 and the tip 110, so that the wear of the main cutting edge and the web cutting edge of the tip 110 becomes severe and deterioration occurs at the tip 110. There was a problem such as greatly shortening the life.
또한, 상기 플루트(121)에 절삭유공을 형성하였을 시에는 이 절삭유공에 칩이 걸려 드릴이 손상되는 요인이 되었다.In addition, when the cutting holes are formed in the flute 121, chips are caught in the cutting holes so that the drill is damaged.
따라서, 본 발명은 상기와 같은 문제점을 감안하여 창출한 것으로서, 드릴날부의 플루트와 외주면부 사이의 날에서 드릴축에 대하여 수평방향으로 수직유공을 형성하는 한편, 상기 드릴날부의 외주면부에서 수직유공과 절삭유공이 연통되게 수평연결공을 형성한 다음, 상기 수평연결공을 드릴날부의 외주면부에서 차폐하여 절삭유공을 따라 공급된 절삭유가 드릴의 진행방향과 동일하게 형성된 수직유공으로 분출되도록 하므로서 초기 드릴작업시 가공물과 선단부에 절삭유의 공급을 원활하게 하여 선단부의 주절삭날과 웨브절삭날의 마모를 극소화시키는 동시에 선단부에 마모로 인한 열화현상을 미연에 방지하여 드릴의 수명을 크게 연장시킨 드릴을 제공함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above problems, and while forming a vertical hole in the horizontal direction with respect to the drill axis in the blade between the flute and the outer peripheral surface portion of the drill blade portion, the vertical hole in the outer peripheral surface portion of the drill blade portion After forming the horizontal connection hole in communication with the cutting oil hole, the horizontal connection hole is shielded at the outer peripheral surface of the drill blade portion, so that the cutting oil supplied along the cutting oil hole is ejected into the vertical hole formed in the same direction as the drill travel direction. Provides a drill that greatly extends the life of the drill by smoothly supplying cutting oil to the workpiece and the tip during work, minimizing the wear of the main cutting edge and web cutting edge of the tip and preventing deterioration due to wear on the tip. Has its purpose.
도 1은 종래 기술에 따른 드릴의 단면도,1 is a cross-sectional view of a drill according to the prior art,
도 2는 본 발명에 따른 드릴의 요부 사시도,2 is a perspective view of main parts of a drill according to the present invention;
도 3은 도 2의 전체 단면도,3 is an overall cross-sectional view of FIG.
도 4는 도 2의 요부 단면도.4 is a cross-sectional view of main parts of FIG. 2;
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
10:선단부 20:드릴날부10: tip 20: drill blade
21:플루트 22:외주면부21: flute 22: outer peripheral surface portion
23:날 24:수직유공23: Day 24: Vertical Merit
25:수평연결공 30:자루부25: horizontal connector 30: sack
40:절삭유공 50:가공물40: cutting hole 50: workpiece
상기와 같은 목적을 달성하기 위한 본 발명은 주절삭날과 웨브절삭날을 가진 선단부와; 칩배출 및 절삭유 공급을 위한 나선형홈 형상의 플루트가 구비된 드릴날부와; 드릴링머시인의 드릴처크에 결합되는 자루부와; 상기 자루부와 드릴날부의 중심을 관통하여 형성된 절삭유공; 등으로 구성된 드릴에 있어서, 드릴날부의 플루트와 외주면부 사이의 날에서 드릴축에 대하여 수평방향으로 수직유공을 형성하는 한편, 상기 드릴날부의 외주면부에서 수직유공과 절삭유공이 연통되게 수평연결공을 형성한 다음, 상기 수평연결공을 드릴날부의 외주면부에서 차폐하여 절삭유공을 따라 공급된 절삭유가 드릴의 진행방향과 동일하게 형성된 수직유공으로 분출되게 한 것을 특징으로 한다.The present invention for achieving the above object is a front end portion having a main cutting edge and a web cutting edge; A drill blade portion provided with a flute of a spiral groove shape for chip discharge and cutting oil supply; Bag portion coupled to the drill chuck of the drilling machine; A cutting oil hole formed through the center of the bag portion and the drill blade portion; In the drill consisting of a drill and the like, the vertical hole in the horizontal direction with respect to the drill axis in the blade between the flute and the outer peripheral surface portion of the drill blade, while the horizontal connecting hole in the vertical peripheral hole and the cutting oil hole in communication with each other After forming, the horizontal connecting hole is shielded from the outer peripheral surface portion of the drill blade portion, so that the cutting oil supplied along the cutting oil hole is ejected into the vertical oil hole formed in the same direction as the traveling direction of the drill.
이하, 본 발명의 바람직한 일실시예를 첨부된 도면에 의거하여 성세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 2는 본 발명에 따른 드릴의 요부 사시도이고, 도 3은 도 2의 전체 단면도이다.Figure 2 is a perspective view of the main portion of the drill according to the present invention, Figure 3 is an overall cross-sectional view of FIG.
주절삭날(11)과 웨브절삭날(12)을 가진 선단부(10)와; 칩배출 및 절삭유 공급을 위한 나선형홈 형상의 플루트(21)가 구비된 드릴날부(20)와; 드릴링머시인의 드릴처크에 결합되는 자루부(30)와; 상기 자루부(30)와 드릴날부(20)의 중심을 관통하여 형성된 절삭유공(40); 등으로 구성된 드릴에 있어서, 상기 드릴날부(20)의 플루트(21)와 외주면부(22) 사이의 날(23)에서 드릴축에 대하여 수평방향으로 수직유공(24)을 소정 깊이 형성하는 한편, 상기 드릴날부(20)의 외주면부(22)에서 수직유공(24)과 절삭유공 (40)이 연통되게 수평연결공(25)을 형성한다.A tip end portion 10 having a main cutting edge 11 and a web cutting edge 12; A drill blade unit 20 having a flute 21 having a spiral groove shape for chip discharge and cutting oil supply; Bag portion 30 is coupled to the drill chuck of the drilling machine; Cutting oil hole 40 formed through the center of the bag portion 30 and the drill blade portion 20; In the drill composed of the back and the like, in the blade 23 between the flute 21 and the outer peripheral surface portion 22 of the drill blade portion 20 to form a vertical vertical hole 24 in the horizontal direction with respect to the drill axis, In the outer circumferential surface portion 22 of the drill blade portion 20, the vertical hole 24 and the cutting oil hole 40 are formed so as to form a horizontal connection hole 25.
그런 다음, 상기 수평연결공(25)을 드릴날부(20)의 외주면부(22)에서 차단하여 절삭유공(40)을 따라 공급된 절삭유가 드릴의 진행방향과 동일하게 형성된 수직유공(24)으로 분출되게 한다.Then, the horizontal connection hole 25 is cut off from the outer circumferential surface portion 22 of the drill blade 20 to the cutting oil supplied along the cutting oil hole 40 to the vertical oil hole 24 formed in the same direction as the direction of the drill. Let it erupt.
즉, 도 4와 같이 절삭유공(40)을 통해 공급된 절삭유가 수직유공(24)을 통해 수직선상으로 가공물(50)에 배출되도록 하여 초기드릴 작업시 가공물(50)과 선단부 (10)의 마모를 극소화하는 것이다.That is, as shown in FIG. 4, the cutting oil supplied through the cutting oil hole 40 is discharged to the work piece 50 in a vertical line through the vertical oil hole 24 so that the wear of the work piece 50 and the tip portion 10 during the initial drilling operation. To minimize this.
상기와 같이 구성된 드릴의 작용효과를 설명하면 다음과 같다.Referring to the effect of the drill configured as described above are as follows.
먼저, 도 3과 같이 드릴날부(20)의 플루트(21)와 외주면부(22) 사이의 날(2 3)에서 드릴축에 대하여 수평방향으로 수직유공(24)을 형성하는 한편, 상기 드릴날부(20)의 외주면부(22)에서 수직유공(24)과 절삭유공(40)이 연통되게 수평연결공 (25)을 형성한 다음, 상기 수평연결공(25)을 드릴날부(20)의 외주면부 (22)에서 막아 절삭유공(40)을 따라 공급된 절삭유가 도 4와 같이 드릴의 진행방향과 동일하게 형성된 수직유공 (24)으로 분출되도록 하므로서 초기 드릴작업시 가공물(50)과 선단부(10)에 절삭유의 공급을 원활하게 한다.First, as shown in FIG. 3, a vertical hole 24 is formed in the horizontal direction with respect to the drill axis at the blades 2 3 between the flute 21 and the outer circumferential surface portion 22 of the drill blade portion 20, and the drill blade portion In the outer circumferential surface 22 of the (20) to form a horizontal connection hole 25 so that the vertical hole 24 and the cutting oil hole 40 is in communication, and then the horizontal connecting hole 25 to the outer peripheral surface of the drill blade portion 20 The cutting oil supplied along the cutting oil hole 40 blocked by the part 22 is ejected into the vertical oil hole 24 formed in the same direction as the direction of the drill as shown in FIG. 4, so that the workpiece 50 and the tip 10 during the initial drilling work. ) Smooth supply of cutting oil.
따라서, 본 발명은 절삭유공(40)을 통해 공급된 절삭유가 수직유공(24)을 통해 수직선상으로 가공물(50)에 배출되도록 하므로서, 선단부(10)의 주절삭날(11)과 웨브절삭날(12)의 마모를 극소화시키는 동시에 선단부에 마모로 인한 열화현상을 미연에 방지하여 드릴의 수명을 크게 연장시킨 매우 유용한 효과가 있다.Therefore, the present invention allows the cutting oil supplied through the cutting oil hole 40 to be discharged to the workpiece 50 in a vertical line through the vertical oil hole 24, so that the main cutting edge 11 and the web cutting edge of the front end portion 10. There is a very useful effect of minimizing the wear of (12) and at the same time preventing the deterioration caused by the wear on the tip end to greatly extend the life of the drill.
Claims (1)
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KR10-2001-0031616A KR100426128B1 (en) | 2001-06-07 | 2001-06-07 | Drill |
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KR10-2001-0031616A KR100426128B1 (en) | 2001-06-07 | 2001-06-07 | Drill |
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KR2020000004346U Division KR200193292Y1 (en) | 2000-02-17 | 2000-02-17 | Drill |
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KR100426128B1 true KR100426128B1 (en) | 2004-04-13 |
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JPS58177214A (en) * | 1982-04-08 | 1983-10-17 | Fuji Seikou Kk | Drill |
JPS58160707U (en) * | 1982-04-23 | 1983-10-26 | 丸善精工株式会社 | drilling tool |
JPS63147210U (en) * | 1987-03-17 | 1988-09-28 | ||
JPH0580614U (en) * | 1992-04-09 | 1993-11-02 | 東芝タンガロイ株式会社 | Twist drill |
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2001
- 2001-06-07 KR KR10-2001-0031616A patent/KR100426128B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58177214A (en) * | 1982-04-08 | 1983-10-17 | Fuji Seikou Kk | Drill |
JPS58160707U (en) * | 1982-04-23 | 1983-10-26 | 丸善精工株式会社 | drilling tool |
JPS63147210U (en) * | 1987-03-17 | 1988-09-28 | ||
JPH0580614U (en) * | 1992-04-09 | 1993-11-02 | 東芝タンガロイ株式会社 | Twist drill |
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KR20020020626A (en) | 2002-03-15 |
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