WO2014104432A1 - Drilling tool having pad and drill head - Google Patents

Drilling tool having pad and drill head Download PDF

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Publication number
WO2014104432A1
WO2014104432A1 PCT/KR2012/011678 KR2012011678W WO2014104432A1 WO 2014104432 A1 WO2014104432 A1 WO 2014104432A1 KR 2012011678 W KR2012011678 W KR 2012011678W WO 2014104432 A1 WO2014104432 A1 WO 2014104432A1
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WO
WIPO (PCT)
Prior art keywords
fastening
guide
center
shape
drill head
Prior art date
Application number
PCT/KR2012/011678
Other languages
French (fr)
Korean (ko)
Inventor
손홍승
박찬규
김주오
김성현
임효준
성욱중
Original Assignee
한국야금 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국야금 주식회사 filed Critical 한국야금 주식회사
Priority to KR1020157009791A priority Critical patent/KR101696564B1/en
Priority to PCT/KR2012/011678 priority patent/WO2014104432A1/en
Publication of WO2014104432A1 publication Critical patent/WO2014104432A1/en

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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
    • B23B51/04—Drills for trepanning
    • B23B51/0486—Drills for trepanning with lubricating or cooling equipment
    • B23B51/0493—Drills for trepanning with lubricating or cooling equipment with exchangeable cutting inserts, e.g. able to be clamped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/56—Guiding pads
    • 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
    • B23B51/063—Deep hole drills, e.g. ejector drills

Definitions

  • the present invention relates to a drill tool, and more particularly, in a drill for processing a deep hole, the drill head includes a guide pad and a cutting insert, and when the hole is processed by the cutting insert, the guide pad is processed.
  • the present invention relates to a drill tool for slipping on a surface to prevent vibration of the drill head to implement hole machining in a stable state.
  • a drill used for deep hole drilling is provided with a drill head at the tip of the tool holder.
  • the tool holder is provided in the form of a tube, and the drill head is provided with a cutting insert and a guide pad.
  • Hole cutting is performed by the cutting insert, and the guide pad slips on the inner diameter surface of the hole to prevent the drill head from vibrating, thereby stably realizing the hole drilling.
  • the chip is discharged along the inner diameter of the tool holder, cutting oil is supplied between the outer diameter of the tool holder and the hole, and the cutting oil is sent toward the drill head.
  • the coolant cools the cutting insert and the guide pad and serves to induce chip evacuation smoothly.
  • the above-described guide pad is made of a material of solid cemented carbide, which is expensive.
  • the guide pad is provided to be replaced, where the guide pad should be fixed to the drill head without shaking, but the conventionally known guide pad is provided in a simple plate shape, so that the guide pad is fastened to the drill head by bolts.
  • shakes are caused by vibrations transmitted during drilling after being fixed.
  • the conventionally known guide pad has a problem that the cooling effect by the cutting oil is low by contacting the cutting oil only the surface exposed after being installed in the drill head.
  • Patent Document 1 Republic of Korea Patent Publication No. 10-1997-0705447 (1997.10.09.)
  • Patent Document 2 Republic of Korea Patent Publication No. 10-2002-0020742 (2002.03.15.)
  • the technical problem to be achieved by the present invention in the guide pad provided in the deep grooving drill to rotate the guide pad to use two sides, to turn the two sides to use a total of four sides to improve the economics
  • the object is to provide a drill tool.
  • Another object of the present invention in the installation of the guide pad to the drill head, the pocket formed on the drill head and the guide pad to be in contact with the fastening surface of five surfaces, in particular, the fastening surface located on the side is V-shaped It is an object to provide a drill tool that is formed to further improve the tightening force.
  • Another object of the present invention is to form a groove (groove) on the side of the pocket formed on the drill head, and to form a V groove on the bottom surface of the pocket, when the guide pad is installed in the pocket between the surface of the pocket and the guide pad
  • An object of the present invention is to provide a drill tool in which a flow path is formed, and the cutting oil flows through the flow path to improve the cooling effect.
  • the drill head 100 is installed at the end of the tool holder 10, the pocket 130 is formed on the outer diameter; And a guide pad (200) installed in the pocket (130).
  • the drill tool comprising the first and second center guide surfaces (211, 212) on the upper and lower sides of the front surface, respectively. Is formed, and first and second center fastening surfaces 221 and 222 are formed at upper and lower ends, respectively, and the first and third fastening surfaces 231 and 233 are formed on either side of the fastening hole 202.
  • the second and fourth fastening surfaces 232 and 234 are formed on the other side, and the first and second center guide surfaces 211 and 212 and the first and third fastening surfaces 231 and 233 are formed.
  • a first side guide surface 251 is formed between the first side guide surface 251 and a second side between the first and second center guide surfaces 211 and 212 and the second and fourth fastening surfaces 232 and 234.
  • a guide surface 252 is formed, and the first side guide surface 251 and the second side guide surface 252 may have a V shape at a first angle.
  • the first and second center guide surfaces 211 and 212 may have a convex curvature, and the first and second side guide surfaces 251 and 252 may have a flat shape. .
  • the first and second center guide surfaces 211 and 212 may have a flat shape, and the first and second side guide surfaces 251 and 252 may have a convex curvature shape. .
  • the drill tool according to the invention recesses lower than the surfaces of the first and second center guide surfaces 211, 212 between the first center guide surface 211 and the second center guide surface 212. 241 may be formed.
  • third and fourth center guide surfaces 213 and 214 are formed on upper and lower sides of the rear surface, respectively, and the third and fourth center guide surfaces 213 and The fourth side guide surface 254 is formed between the 214 and the first and third fastening surfaces 231 and 233, and the third and fourth center guide surfaces 213 and 214 and the second, A third side guide surface 253 is formed between the fourth fastening surfaces 232 and 234, and the first side guide surface 251 and the second side guide surface 252 have a V shape at a first angle. It may be to form a shape.
  • the third and fourth center guide surfaces 211 and 212 may have a convex curvature, and the third and fourth side guide surfaces 251 and 252 may have a flat shape. .
  • the third and fourth center guide surfaces 211 and 212 may have a flat shape, and the third and fourth side guide surfaces 251 and 252 may have a convex curvature shape. .
  • the drill tool according to the invention recesses lower than the surfaces of the third and fourth center guide surfaces 213 and 214 between the third center guide surface 213 and the fourth center guide surface 214. 242 may be formed.
  • the first angle of the drill tool according to the invention may be from 135 ° to 155 °.
  • the first fastening surface 231 and the second fastening surface 232 may form a second angle of an acute angle.
  • the second angle may be 20 ° to 40 °.
  • first and second side grooves 261 and 262 are formed at both sides of the first center fastening surface 221, and third sides are formed at both sides of the second center fastening surface 222.
  • the fourth side grooves 263 and 264 may be formed.
  • the pocket 130 of the drill tool according to the present invention, the cross-sectional shape of the first, second floor fastening surface (131, 132) formed in a V shape; First and second side fastening surfaces 133 and 134 formed in a V shape on a side of the drill head 100 which is pressed against the guide pad 200 when the drill head 100 rotates; A center fastening surface 137 formed on a side surface of the drill head 100 pressed against the guide pad 200 in a direction entering when the drill head 100 is holed; And an opening 138 open to open the end face 122 side of the drill head 100.
  • the main groove 141 may be further formed such that the outer diameter portion of the shank 110 and the center fastening surface 137 communicate with each other.
  • the sub grooves 142 and 143 may be further formed on both sides of the center fastening surface 137 so as to communicate with the main groove 141.
  • the drill tool according to the present invention made as described above is formed in the same shape of the front and back, and the same shape in the left and right side shape, it can be used by mounting by turning 180 degrees relative to the fastening hole, By using the rear side upside down, it is possible to use a total of four sides, thereby increasing the utilization of the guide pad made of expensive cemented carbide material can improve the economics.
  • the pocket formed on the drill head and the guide pad are brought into contact with five fastening surfaces, and in particular, the fastening surface located on the side is V It is formed in the shape of a magnet to further improve the fastening force, and has a rigidity for cutting resistance, thereby making it possible to stably process deep holes without shaking.
  • the drill tool according to the present invention is formed by forming a groove (groove) on the side of the pocket formed on the drill head, and by forming the floor fastening surface of the V groove shape on the bottom surface of the pocket, when the guide pad is installed in the pocket of the pocket A flow path is formed between the surface and the guide pad, and the cutting oil flows through the flow path, thereby improving the cooling effect.
  • the drill tool according to the present invention can further form a groove on the edge side of the guide pad, thereby inducing the introduction of cutting oil can further shape the cooling effect.
  • 1, 2 and 3 is an exploded perspective view, an assembled perspective view and a front view for explaining a drill tool according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view taken along the line A-A of FIG.
  • FIG. 5 is a cross-sectional view taken along the line B-B in FIG.
  • FIG. 6 is a cross-sectional view illustrating a flow path in which cutting oil is moved in a drill tool according to an exemplary embodiment of the present invention.
  • FIG. 7 is a plan view, a front view, and a side view for explaining an example of a guide pad for a drill according to an embodiment of the present invention.
  • FIG 8 is a view for explaining the operation of the guide pad for a drill according to an embodiment of the present invention.
  • FIG. 9 is a view for explaining the guide surface angle in the guide pad for drilling according to an embodiment of the present invention.
  • FIG. 10 is a view for explaining the fastening surface angle in the guide pad for a drill according to an embodiment of the present invention.
  • FIG. 11 is a view for explaining another example of a guide pad for a drill according to an embodiment of the present invention.
  • FIGS. 1 to 6 a drill tool according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 to 6.
  • 1, 2 and 3 are exploded perspective view, assembly perspective view and front view for explaining a drill tool according to an embodiment of the present invention.
  • 4 is a cross-sectional view taken along the line A-A of FIG. 5 is a cross-sectional view taken along the line B-B in FIG. 6 is a cross-sectional view for describing a flow path in which cutting oil is moved in a drill tool according to an exemplary embodiment of the present invention.
  • the drill head 100 is installed in the tool holder 10.
  • the tool holder 10 and the drill head 100 are formed in a tube shape, and chips may be discharged through holes in the tube.
  • the drill head 100 is the head 120 is formed on one side of the shank 110, it is possible to form a spiral on the shank 110 may be coupled to the tool holder 10 in a spiral.
  • the head 120 is provided with a guide pad 200 and the cutting insert 300.
  • a pocket 130 is formed in the head 120, and the guide pad 200 is fastened to the female screw 150 formed in the pocket 130 by being inserted into the pocket 130. Are assembled.
  • the pocket 130 is formed in a substantially rhombic shape. More specifically, the first and second floor fastening surfaces 131 and 132 are formed on the bottom, and the first and second sides are pressed to the guide pad 200 based on the direction in which the drill head 100 rotates. Two side fastening surfaces 133 and 134 are formed. First and second clearance surfaces 135 and 136 are formed on the opposite side facing the first and second side fastening surfaces 133 and 134, respectively.
  • center fastening surface 137 is formed on the side pressed by the guide pad 200 based on the direction in which the drill head 100 enters the hole when machining the hole, and faces the center fastening surface 137.
  • An opening 138 is formed on the side of the end face 122 on the opposite side.
  • first floor fastening surface 131 and the second floor fastening surface 132 has a V-shape, as shown in FIG.
  • the first side fastening surface 133 and the second side fastening surface 134 form a V shape.
  • the first clearance surface 135 and the second clearance surface 136 have a V shape, as shown in FIGS. 1 to 3.
  • the head 120 is formed with a main groove 141 on the surface connected to the pocket 130.
  • the main groove 141 is used as a flow path through which the cutting oil flows because the groove is formed lower than the outer diameter surface of the head 120.
  • Sub grooves 142 and 143 are formed on both sides of the center fastening surface 137, respectively.
  • the cutting oil introduced through the main groove 141 may be moved toward the first and second floor fastening surfaces 131 and 132 through the sub grooves 142 and 143. That is, the main groove 141 and the sub grooves 142 and 143 are guided to allow the cutting oil to flow into the pocket 130.
  • the cutting oil 600 is provided between the hole 500 and the tool holder 10. Thereafter, the cutting oil 600 flows through the main groove 141 formed in the head 120 and flows into the sub grooves 142 and 143. Thereafter, the cutting oil 600 is moved along the first and second floor fastening surfaces 131 and 132 to be ejected out of the opening 138 to the end face 122, that is, toward the hole end 520.
  • Chips are generated at the hole end 520, which is pushed out by the pressure of the cutting oil and is discharged to the outside along the inner hole of the tube.
  • the flow path is formed between the guide pad 200 and the pocket 130 to prevent the pressure drop of the cutting oil 600, thereby providing a high-pressure cutting oil 600 to the hole end 520 Can have a more favorable effect on chip evacuation.
  • the guide pad 200 is provided in a rhombic shape with respect to the fastening hole 202.
  • it is a shape which top, bottom, left and right are symmetrical when seen from the front surface, and the shape before flipping and the shape after flipping are the same.
  • Accompanying drawings Figure 7 is a plan view, front view, side view for explaining an example of a guide pad for a drill according to an embodiment of the present invention.
  • Accompanying drawings Figure 8 is a view for explaining the operation of the guide pad for a drill according to an embodiment of the present invention.
  • 9 is a view for explaining the guide surface angle in the guide pad for drilling according to an embodiment of the present invention.
  • Accompanying drawings Figure 10 is a view for explaining the fastening surface angle in the guide pad for a drill according to an embodiment of the present invention.
  • the guide pad 200 has a shape in which the left and right are symmetrical and the top and bottom are symmetrical with respect to the fastening hole 202 as viewed from the front, and have a rhombic shape as a whole.
  • Fig.7 (a) (c) it is a shape in which the front surface and the back surface are symmetric up-down.
  • the guide pad 200 according to an embodiment of the present invention has the same shape before and after turning in any direction, and even when turned upside down, the guide pad 200 has the same shape.
  • the guide pad 200 has first and second center guide surfaces 211 and 212 formed on the front and bottom of the fastening hole 202, respectively.
  • the guide pads 200 are provided with third and fourth center guide surfaces 213 and 214 above and below the back of the fastening holes 202, respectively.
  • the first, second, third, and fourth center guide surfaces 211, 212, 213, and 214 described above may be formed with convex curvatures, and the radius of curvature is equal to or smaller than the radius of the hole 500. .
  • the guide pads 200 have first and second center fastening surfaces 221 and 222 on upper and lower end surfaces, respectively.
  • the guide pad 200 has first and second fastening surfaces 231 and 232 formed on either side of the fastening hole 202 and the third and fourth fastening surfaces 233 and 234 on the other side thereof. Is formed.
  • the first fastening surface 231 and the second fastening surface 232 described above form a V shape, and similarly, the third fastening surface 233 and the fourth fastening surface 234 form a V shape.
  • the fastening holes 202 of the guide pad 200 are lower than the surfaces of the first and second center guide surfaces 211 and 212 and the third and fourth center guide surfaces 213 and 214 described above, respectively.
  • Recesses 241 and 242 are formed. The recesses 241 and 242 serve to secure a space around the bolt 400 when the guide pad 200 is installed in the pocket 130. That is, the cutting oil 600 moves along the depths of the first and second floor fastening surfaces 131 and 132, but the cutting oil 600 bypasses the recesses 241 and 242 at the portion where the bolt 400 is disposed. It is moved.
  • the guide pads 200 are provided with first and second side guide surfaces 251 and 252 on both sides of the front surface of the fastening hole 202, respectively, and third and fourth side guides on both sides of the back surface, respectively.
  • Surfaces 253 and 254 are formed.
  • the first side guide surface 251 and the second side guide surface 252 described above have a V shape.
  • the third side guide surface 253 and the fourth side guide surface 254 formed on the rear face have a V shape.
  • the cutting oil 600 may flow into the first to fourth side guide surfaces 251, 252, 253, and 254 from the guide pad 200. That is, by introducing the cutting oil 600 into a larger area, the cooling effect on the guide pad 200 is improved, and the frictional resistance reducing effect is further improved.
  • the first angle formed by the first side guide surface 251 and the second side guide surface 252 may be set in a range of 135 ° to 155 °.
  • the thickness of the first to fourth fastening surfaces 231, 232, 233, and 234 may be so thin that the fastening force may be weakened.
  • the first angle is 155 ° or less, it is possible to secure the thickness of the first to fourth fastening surfaces 231, 232, 233, and 234, thereby making it possible to widen the contact surface when tightening, thereby strengthening the fastening force. have.
  • the inflow of the cutting oil 600 may not be smooth. have.
  • the first angle formed by the first side guide surface 251 and the second side guide surface 252 may be preferably set to a range of 135 ° to 155 °, and likewise, the third side The first angle formed by the guide surface 253 and the fourth side guide surface 254 may be set in the range of 135 ° to 155 °.
  • the second angle of the acute angle formed by the first fastening surface 131 and the second fastening surface 232 may be set to 20 ° to 40 °.
  • the second angle is greater than or equal to 20 °
  • the ratio of the width L2 of the first and second center fastening surfaces 221 is greater than the width L of the guide pad 200, so that the guide pad ( When 200 is installed, the tightening force is improved.
  • the drill head 100 rotates when the hole is machined, and as a result, as shown in FIG. 10A, the head 120 is applied to the first and fourth fastening surfaces 231 and 234. To act.
  • the guide pad 200 generates a force to rotate about the fastening hole 202 by vibration or external force not specified. That is, the guide pad 200 should have rigidity with respect to the complex force described above.
  • the larger the second angle the smaller the angle between the first fastening surface 231 and the fourth fastening surface 234 is, thereby forming a V-shaped shape having a relatively sharper shape, and the drill head 100 is The sharper the shape, the stronger the stiffness.
  • the ratio of the width L2 of the first and second center fastening surfaces 221 is smaller than that of the width L of the guide pad 200. Since the angle formed between the 231 and the fourth fastening surface 234 becomes wider, the effect due to the V shape may be insignificant.
  • the width L2 of the first and second center fastening surfaces 221 may be too small.
  • the drill head 100 may be smaller. The rigidity with respect to the force acting in the entering direction at the time of hole machining can be weakened.
  • the width L2 of the first and second center fastening surfaces 221 can be secured.
  • the drill head 100 can be drilled by securing the width L2. It may have a rigidity against the force acting in the entering direction when machining.
  • the guide pad 200 may not be detached from the pocket 130 and a good fastening force may be realized. Since the drill head 100 may have rigidity with respect to the force applied when the drill head 100 enters the hole, the guide pad 200 may be more firmly fixed to the pocket 130.
  • the guide pad 200 includes first to fourth side grooves 261 to 264 on the first to fourth fastening surfaces 231 to 234 adjacent to the first and second center fastening surfaces 211 and 222, respectively. ) Can be formed.
  • the first to fourth side grooves 261 to 264 described above face the sub grooves 142 and 143 when the guide pad 200 is installed in the pocket 130, thereby forming a larger flow path. That is, the cutting oil 600 may be induced to flow into the inside of the pocket 130 more easily.
  • the guide pad 200 has been described that the first to fourth guide surfaces 211, 212, 213, 214 located in the center is slipped with the hole inside 510, on the contrary
  • the first to fourth side guide surfaces 251, 252, 253, and 254 may slip with the hole inside 510. This will be described with reference to FIG. 11.
  • FIG. 11 is a view for explaining another example of a guide pad for a drill according to an embodiment of the present invention.
  • the guide pad 200 illustrated in FIG. 11 provides the first to fourth guide surfaces 211, 212, 213, and 214 in a flat shape, and the first to fourth side guide surfaces 251 and 252. , 253 and 254 may be provided to have convex curvature. That is, the first to fourth side guide surfaces 251, 252, 253, and 254 and the hole inside 510 slip. Meanwhile, since a space is formed between the first to fourth guide surfaces 211, 212, 213, and 214 and the hole inside 510, the cutting oil 600 may flow into the space.
  • the cutting oil 600 implements the cooling action and the frictional resistance reduction action.
  • Drill guide pad 200 and the drill head 100 according to an embodiment of the present invention made as described above is formed in the same shape of the front and back, and by forming the same in the shape of the left and right sides, fastening It can be installed by turning 180 degrees around the hole, and can be used by reversing the front and back, so that a total of four sides can be used, thereby increasing the utilization of guide pads made of expensive cemented carbide material and improving economic efficiency. have.
  • a pocket formed in the drill head 100 130 and the guide pad 200 are in contact with the fastening surface of the five sides, in particular, the fastening surface located on the side is formed in a V-shape to further improve the fastening force to have a rigidity for cutting resistance without shaking
  • the deep hole can be processed stably.
  • the drill guide pad 200 and the drill head 100 forms a groove on the side of the pocket 130 formed in the drill head 100, the pocket 130
  • the V-groove-shaped floor fastening surface on the bottom surface of the pocket 130, when the guide pad 200 is installed in the pocket 130, a flow path is formed between the surface of the pocket 130 and the guide pad 200. Through the coolant flow through it can improve the cooling effect.
  • the drill guide pad 200 and the drill head 100 may further form grooves on the edge side of the guide pad 200, thereby inducing the introduction of cutting oil
  • the cooling effect can be further shaped.
  • the guide pad and the drill head according to the present invention can be installed in a deep grooving drill and used to perform hole processing.

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  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Abstract

The present invention relates to a drilling tool. The drilling tool according to the present invention is configured such that a diamond-shaped guide pad is arranged in a diamond-shaped pocket, the bottom of which is formed into a V-shape and one side of which has a groove formed therein so as to enable the guide pad to be installed, and a cutting fluid flows between the pocket and the guide pad, thus improving cooling performance of the guide pad. Further, the shape of the guide pad is formed into a shape symmetrical in the left, right, and vertical directions, thus enabling the total four side surfaces to be used and improving economic advantages. In addition, the shape of the guide pad is formed into a diamond shape in a plane view, thus inducing smooth introduction of the cutting fluid. Representative drawing: FIG. 1.

Description

패드와 드릴 헤드를 가지는 드릴 공구Drill tool with pad and drill head
본 발명은 드릴 공구에 관한 것으로, 더욱 상세하게는 깊은 홀을 가공하도록 하는 드릴에 있어서, 드릴 헤드에 가이드 패드와 커팅 인서트를 구비하고, 커팅 인서트에 의해 홀(hole) 가공할 때에 가이드 패드가 가공면에 슬립(slip)되도록 하여 드릴 헤드의 진동을 방지하여 안정된 상태에서 홀 가공을 구현하도록 하는 드릴 공구에 관한 것이다.BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a drill tool, and more particularly, in a drill for processing a deep hole, the drill head includes a guide pad and a cutting insert, and when the hole is processed by the cutting insert, the guide pad is processed. The present invention relates to a drill tool for slipping on a surface to prevent vibration of the drill head to implement hole machining in a stable state.
일반적으로 깊은 홀의 드릴 가공에는 사용되는 드릴(drill)은 툴 홀더의 선단에 드릴 헤드가 구비된다. 툴 홀더는 튜브(tube) 형태로 제공되고, 드릴 헤드에는 커팅 인서트와 가이드 패드가 구비된다.In general, a drill used for deep hole drilling is provided with a drill head at the tip of the tool holder. The tool holder is provided in the form of a tube, and the drill head is provided with a cutting insert and a guide pad.
커팅 인서트에 의해 홀(hole) 가공이 이루어지고, 가이드 패드는 홀의 내경면에서 슬립(Slip)되어 드릴 헤드가 진동되는 것을 방지하여 안정되게 홀 가공을 구현하도록 한다.Hole cutting is performed by the cutting insert, and the guide pad slips on the inner diameter surface of the hole to prevent the drill head from vibrating, thereby stably realizing the hole drilling.
한편, 칩(chip)은 툴 홀더의 내경을 따라 배출되고, 툴 홀더의 외경과 홀의 사이에는 절삭유가 공급되고, 절삭유는 드릴 헤드 쪽으로 보내진다.On the other hand, the chip is discharged along the inner diameter of the tool holder, cutting oil is supplied between the outer diameter of the tool holder and the hole, and the cutting oil is sent toward the drill head.
절삭유는 커팅 인서트와 가이드 패드를 냉각시키도록 하고, 칩 배출을 원활하게 유도하는 작용을 한다.The coolant cools the cutting insert and the guide pad and serves to induce chip evacuation smoothly.
한편, 상술한 가이드 패드는 초경합금(solid cemented carbide)의 재질로 제조되는데, 이러한 초경합금 재질은 가격이 비싸다.On the other hand, the above-described guide pad is made of a material of solid cemented carbide, which is expensive.
그러나 종래에 알려진 깊은 홈 가공용 드릴에 사용되는 가이드 패드는 단면만을 사용하고, 단면에서도 180도 돌려서 사용하므로 최대 2면을 사용하는 것으로 고가의 가이드 패드를 사용하는 것을 고려할 때에 경제성이 매우 낮은 문제점이 있다.However, the conventional guide pads used in deep grooving drills use only one end face and rotate 180 degrees in the end face, so using up to two sides has a problem of very low economic efficiency when considering expensive guide pads. .
한편, 가이드 패드를 교체가 가능하도록 제공하는데, 이때 가이드 패드가 드릴 헤드에 흔들림 없이 고정되어야 하지만, 종래에 알려진 가이드 패드는 단순한 판(plate)형상으로 제공되므로 가이드 패드가 볼트에 의해 드릴 헤드에 체결/고정된 후에 드릴 가공 중에 전달되는 진동에 의해 흔들림이 발생하는 문제점이 있다.On the other hand, the guide pad is provided to be replaced, where the guide pad should be fixed to the drill head without shaking, but the conventionally known guide pad is provided in a simple plate shape, so that the guide pad is fastened to the drill head by bolts. There is a problem that shakes are caused by vibrations transmitted during drilling after being fixed.
다른 한편으로, 종래에 알려진 가이드 패드는 드릴 헤드에 설치된 후에 겉으로 드러나는 표면만 절삭유와 접촉하는 것으로 절삭유에 의한 냉각효과가 낮은 문제점이 있다.On the other hand, the conventionally known guide pad has a problem that the cooling effect by the cutting oil is low by contacting the cutting oil only the surface exposed after being installed in the drill head.
[선행기술문헌][Preceding technical literature]
[특허문헌][Patent Documents]
(특허문헌1) 대한민국 공개특허 제10-1997-0705447호(1997.10.09.)(Patent Document 1) Republic of Korea Patent Publication No. 10-1997-0705447 (1997.10.09.)
(특허문헌2) 대한민국 공개특허 제10-2002-0020742호(2002.03.15.)(Patent Document 2) Republic of Korea Patent Publication No. 10-2002-0020742 (2002.03.15.)
따라서 본 발명이 이루고자 하는 기술적 과제는 깊은 홈 가공용 드릴에 구비되는 가이드 패드에 있어서, 가이드 패드를 돌려서 2면을 사용하도록 하고, 뒤집어서 2면을 사용하도록 하여 총 4면을 사용하여 경제성을 향상시키도록 하는 드릴 공구를 제공하는데 그 목적이 있다.Therefore, the technical problem to be achieved by the present invention in the guide pad provided in the deep grooving drill, to rotate the guide pad to use two sides, to turn the two sides to use a total of four sides to improve the economics The object is to provide a drill tool.
본 발명의 다른 목적은, 드릴 헤드에 가이드 패드를 설치함에 있어서, 드릴 헤드에 형성한 포켓과 가이드 패드가 5면의 체결면에서 닿도록 하고, 특히, 측면에 위치된 체결면은 V자 형상으로 형성되어 체결력을 더욱 향상시키도록 하는 드릴 공구를 제공하는데 목적이 있다.Another object of the present invention, in the installation of the guide pad to the drill head, the pocket formed on the drill head and the guide pad to be in contact with the fastening surface of five surfaces, in particular, the fastening surface located on the side is V-shaped It is an object to provide a drill tool that is formed to further improve the tightening force.
본 발명의 또 다른 목적은, 드릴 헤드에 형성된 포켓의 측면에 그루브(groove)를 형성하고, 포켓의 바닥면에 V홈을 형성하여, 포켓에 가이드 패드가 설치되면 포켓의 표면과 가이드 패드의 사이에 유로가 형성되고, 유로를 통하여 절삭유가 흐르도록 하여 냉각효과를 향상시키도록 하는 드릴 공구를 제공하는데 그 목적이 있다.Another object of the present invention is to form a groove (groove) on the side of the pocket formed on the drill head, and to form a V groove on the bottom surface of the pocket, when the guide pad is installed in the pocket between the surface of the pocket and the guide pad An object of the present invention is to provide a drill tool in which a flow path is formed, and the cutting oil flows through the flow path to improve the cooling effect.
본 발명이 이루고자 하는 기술적 과제는 이상에서 언급한 기술적 과제로 제한되지 않으며, 언급되지 않은 또 다른 기술적 과제는 아래의 기재로부터 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명확하게 이해될 수 있을 것이다.The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, another technical problem that is not mentioned can be clearly understood by those skilled in the art from the following description. There will be.
상기 기술적 과제를 달성하기 위한 본 발명에 따른 드릴 공구는, 툴 홀더(10)의 단부에 설치되고 외경에 포켓(130)이 형성된 드릴 헤드(100); 및 상기 포켓(130)에 설치되는 가이드 패드(200);를 포함하는 드릴 공구에 있어서, 상기 가이드 패드(200)는, 전면의 상하측에 각각 제1, 제2 센터 가이드 서피스(211, 212)가 형성되고, 상하측 단부에 각각 제1, 제2 센터 체결면(221, 222)이 형성되고, 상기 체결 홀(202)을 중심으로 어느 한쪽에 제1, 제3 체결면(231, 233)이 형성되며, 다른 한쪽에 제2, 제4 체결면(232, 234)이 형성되고, 상기 제1, 제2 센터 가이드 서피스(211, 212)와 상기 제1, 제3 체결면(231, 233)의 사이에 제1 사이드 가이드 서피스(251)가 형성되며, 상기 제1, 제2 센터 가이드 서피스(211, 212)와 상기 제2, 제4 체결면(232, 234)의 사이에 제2 사이드 가이드 서피스(252)가 형성되고, 상기 제1 사이드 가이드 서피스(251)와 상기 제2 사이드 가이드 서피스(252)는 제1각도로 V자 형상을 이루는 것일 수 있다.Drill tool according to the present invention for achieving the above technical problem, the drill head 100 is installed at the end of the tool holder 10, the pocket 130 is formed on the outer diameter; And a guide pad (200) installed in the pocket (130). In the drill tool comprising the first and second center guide surfaces (211, 212) on the upper and lower sides of the front surface, respectively. Is formed, and first and second center fastening surfaces 221 and 222 are formed at upper and lower ends, respectively, and the first and third fastening surfaces 231 and 233 are formed on either side of the fastening hole 202. The second and fourth fastening surfaces 232 and 234 are formed on the other side, and the first and second center guide surfaces 211 and 212 and the first and third fastening surfaces 231 and 233 are formed. A first side guide surface 251 is formed between the first side guide surface 251 and a second side between the first and second center guide surfaces 211 and 212 and the second and fourth fastening surfaces 232 and 234. A guide surface 252 is formed, and the first side guide surface 251 and the second side guide surface 252 may have a V shape at a first angle.
본 발명에 따른 드릴 공구는, 상기 제1, 제2 센터 가이드 서피스(211, 212)는 볼록한 곡률로 형상이고, 상기 제1, 제2 사이드 가이드 서피스(251, 252)는 평탄한 형상인 것일 수 있다.In the drill tool according to the present invention, the first and second center guide surfaces 211 and 212 may have a convex curvature, and the first and second side guide surfaces 251 and 252 may have a flat shape. .
본 발명에 따른 드릴 공구는, 상기 제1, 제2 센터 가이드 서피스(211, 212)는 평탄한 형상이고, 상기 제1, 제2 사이드 가이드 서피스(251, 252)는 볼록한 곡률로 형상인 것일 수 있다.In the drill tool according to the present invention, the first and second center guide surfaces 211 and 212 may have a flat shape, and the first and second side guide surfaces 251 and 252 may have a convex curvature shape. .
본 발명에 따른 드릴 공구는, 상기 제1 센터 가이드 서피스(211)와 상기 제2 센터 가이드 서피스(212)의 사이에 상기 제1, 제2 센터 가이드 서피스(211, 212)의 표면보다 낮게 리세스(241)가 형성된 것일 수 있다.The drill tool according to the invention recesses lower than the surfaces of the first and second center guide surfaces 211, 212 between the first center guide surface 211 and the second center guide surface 212. 241 may be formed.
본 발명에 따른 드릴 공구의 상기 가이드 패드(200)는, 배면의 상하측에 각각 제3, 제4 센터 가이드 서피스(213, 214)가 형성되고, 상기 제3, 제4 센터 가이드 서피스(213, 214)와 상기 제1, 제3 체결면(231, 233)의 사이에 제4 사이드 가이드 서피스(254)가 형성되며, 상기 제3, 제4 센터 가이드 서피스(213, 214)와 상기 제2, 제4 체결면(232, 234)의 사이에 제3 사이드 가이드 서피스(253)가 형성되고, 상기 제1 사이드 가이드 서피스(251)와 상기 제2 사이드 가이드 서피스(252)는 제1각도로 V자 형상을 이루는 것일 수 있다.In the guide pad 200 of the drill tool according to the present invention, third and fourth center guide surfaces 213 and 214 are formed on upper and lower sides of the rear surface, respectively, and the third and fourth center guide surfaces 213 and The fourth side guide surface 254 is formed between the 214 and the first and third fastening surfaces 231 and 233, and the third and fourth center guide surfaces 213 and 214 and the second, A third side guide surface 253 is formed between the fourth fastening surfaces 232 and 234, and the first side guide surface 251 and the second side guide surface 252 have a V shape at a first angle. It may be to form a shape.
본 발명에 따른 드릴 공구는, 상기 제3, 제4 센터 가이드 서피스(211, 212)는 볼록한 곡률로 형상이고, 상기 제3, 제4 사이드 가이드 서피스(251, 252)는 평탄한 형상인 것일 수 있다.In the drill tool according to the present invention, the third and fourth center guide surfaces 211 and 212 may have a convex curvature, and the third and fourth side guide surfaces 251 and 252 may have a flat shape. .
본 발명에 따른 드릴 공구는, 상기 제3, 제4 센터 가이드 서피스(211, 212)는 평탄한 형상이고, 상기 제3, 제4 사이드 가이드 서피스(251, 252)는 볼록한 곡률로 형상인 것일 수 있다.In the drill tool according to the present invention, the third and fourth center guide surfaces 211 and 212 may have a flat shape, and the third and fourth side guide surfaces 251 and 252 may have a convex curvature shape. .
본 발명에 따른 드릴 공구는, 상기 제3 센터 가이드 서피스(213)와 상기 제4 센터 가이드 서피스(214)의 사이에 상기 제3, 제4 센터 가이드 서피스(213, 214)의 표면보다 낮게 리세스(242)가 형성된 것일 수 있다.The drill tool according to the invention recesses lower than the surfaces of the third and fourth center guide surfaces 213 and 214 between the third center guide surface 213 and the fourth center guide surface 214. 242 may be formed.
본 발명에 따른 드릴 공구의 제1 각도는 135°내지 155°인 것일 수 있다.The first angle of the drill tool according to the invention may be from 135 ° to 155 °.
본 발명에 따른 드릴 공구는, 상기 제1 체결면(231)과 상기 제2 체결면(232)은 예각의 제2각도를 이루는 것일 수 있다.In the drill tool according to the present invention, the first fastening surface 231 and the second fastening surface 232 may form a second angle of an acute angle.
본 발명에 따른 드릴 공구는, 상기 제2각은 20°내지 40°인 것일 수 있다.In the drill tool according to the present invention, the second angle may be 20 ° to 40 °.
본 발명에 따른 드릴 공구는, 상기 제1 센터 체결면(221)의 양측에 제1, 제2 사이드 그루브(261, 262)가 형성되고, 상기 제2 센터 체결면(222)의 양측에 제3, 제4 사이드 그루브(263, 264)가 형성되는 것일 수 있다.In the drill tool according to the present invention, first and second side grooves 261 and 262 are formed at both sides of the first center fastening surface 221, and third sides are formed at both sides of the second center fastening surface 222. The fourth side grooves 263 and 264 may be formed.
본 발명에 따른 드릴 공구의 상기 포켓(130)은, 단면 형상이 V자 형상으로 형성된 제1, 제2 플로어 체결면(131, 132); 상기 드릴 헤드(100)가 회전할 때에 상기 가이드 패드(200)에 가압하는 측면에 V자 형상으로 형성된 제1, 제2 사이드 체결면(133, 134); 상기 드릴 헤드(100)가 홀 가공할 때에 진입되는 방향으로 상기 가이드 패드(200)에 가압하는 측면에 형성된 센터 체결면(137); 및 상기 드릴 헤드(100)의 엔드 페이스(122)쪽이 개방되도록 트인 개구부(138);를 포함할 수 있다.The pocket 130 of the drill tool according to the present invention, the cross-sectional shape of the first, second floor fastening surface (131, 132) formed in a V shape; First and second side fastening surfaces 133 and 134 formed in a V shape on a side of the drill head 100 which is pressed against the guide pad 200 when the drill head 100 rotates; A center fastening surface 137 formed on a side surface of the drill head 100 pressed against the guide pad 200 in a direction entering when the drill head 100 is holed; And an opening 138 open to open the end face 122 side of the drill head 100.
본 발명에 따른 드릴 공구는, 섕크(110)의 외경부와 상기 센터 체결면(137)이 통하도록 메인 그루브(141);가 더 형성된 것일 수 있다.In the drill tool according to the present invention, the main groove 141 may be further formed such that the outer diameter portion of the shank 110 and the center fastening surface 137 communicate with each other.
본 발명에 따른 드릴 공구는, 상기 센터 체결면(137)의 양측에는 상기 메인 그루브(141)와 통하도록 서브 그루브(142, 143)가 더 형성된 것일 수 있다.In the drill tool according to the present invention, the sub grooves 142 and 143 may be further formed on both sides of the center fastening surface 137 so as to communicate with the main groove 141.
기타 실시예들의 구체적인 사항들은 상세한 설명 및 도면들에 포함되어 있다.Specific details of other embodiments are included in the detailed description and the drawings.
상기한 바와 같이 이루어진 본 발명에 따른 드릴 공구는 전면과 배면의 형상을 동일하게 형성하고, 좌측면과 우측면 형상으로 동일하게 형성함으로써, 체결 홀을 기준으로 180도 돌려서 장착하여 사용할 수 있고, 전면과 배면을 뒤집어서 사용할 수 있음으로써, 총 4면을 이용할 수 있고, 이로써 고가의 초경합금 재질로 제작되는 가이드 패드의 활용도를 높여 경제성을 향상시킬 수 있다.The drill tool according to the present invention made as described above is formed in the same shape of the front and back, and the same shape in the left and right side shape, it can be used by mounting by turning 180 degrees relative to the fastening hole, By using the rear side upside down, it is possible to use a total of four sides, thereby increasing the utilization of the guide pad made of expensive cemented carbide material can improve the economics.
또한, 본 발명에 따른 드릴 공구는, 드릴 헤드에 가이드 패드를 설치함에 있어서, 드릴 헤드에 형성한 포켓과 가이드 패드가 5면의 체결면에서 닿도록 하고, 특히, 측면에 위치된 체결면은 V자 형상으로 형성되어 체결력을 더욱 향상시켜 절삭저항에 대한 강성을 가짐으로써 흔들림 없이 안정되게 깊은 홀을 가공할 수 있게 된다.In addition, in the drill tool according to the present invention, in the installation of the guide pad in the drill head, the pocket formed on the drill head and the guide pad are brought into contact with five fastening surfaces, and in particular, the fastening surface located on the side is V It is formed in the shape of a magnet to further improve the fastening force, and has a rigidity for cutting resistance, thereby making it possible to stably process deep holes without shaking.
또한, 본 발명에 따른 드릴 공구는 드릴 헤드에 형성된 포켓의 측면에 그루브(groove)를 형성하고, 포켓의 바닥면에 V홈 형상의 플로어 체결면을 형성함으로써, 포켓에 가이드 패드가 설치되면 포켓의 표면과 가이드 패드의 사이에 유로가 형성되고, 유로를 통하여 절삭유가 흐름으로써 냉각효과를 향상시킬 수 있다.In addition, the drill tool according to the present invention is formed by forming a groove (groove) on the side of the pocket formed on the drill head, and by forming the floor fastening surface of the V groove shape on the bottom surface of the pocket, when the guide pad is installed in the pocket of the pocket A flow path is formed between the surface and the guide pad, and the cutting oil flows through the flow path, thereby improving the cooling effect.
또한, 본 발명에 따른 드릴 공구는 가이드 패드의 모서리 측면에 그루브를 더 형성할 수 있고, 이로써 절삭유의 유입을 유도할 수 있어 냉각효과를 더욱 형상시킬 수 있다.In addition, the drill tool according to the present invention can further form a groove on the edge side of the guide pad, thereby inducing the introduction of cutting oil can further shape the cooling effect.
도 1, 도 2 및 도 3은 본 발명의 일 실시예에 따른 드릴 공구를 설명하기 위한 분해 사시도면, 조립 사시도면 및 정면도이다.1, 2 and 3 is an exploded perspective view, an assembled perspective view and a front view for explaining a drill tool according to an embodiment of the present invention.
도 4는 도 3의 A-A선 단면도이다.4 is a cross-sectional view taken along the line A-A of FIG.
도 5는 도 3의 B-B선 단면도이다.5 is a cross-sectional view taken along the line B-B in FIG.
도 6는 본 발명의 일 실시예에 따른 드릴 공구에서 절삭유가 이동되는 유로를 설명하기 위한 단면도이다.6 is a cross-sectional view illustrating a flow path in which cutting oil is moved in a drill tool according to an exemplary embodiment of the present invention.
도 7는 본 발명의 일 실시예에 따른 드릴용 가이드 패드의 예를 설명하기 위한 평면도, 정면도, 측면도이다.7 is a plan view, a front view, and a side view for explaining an example of a guide pad for a drill according to an embodiment of the present invention.
도 8는 본 발명의 일 실시예에 따른 드릴용 가이드 패드의 작용을 설명하기 위한 도면이다.8 is a view for explaining the operation of the guide pad for a drill according to an embodiment of the present invention.
도 9는 본 발명의 일 실시예에 따른 드릴용 가이드 패드에서 가이드 서피스 각도를 설명하기 위한 도면이다.9 is a view for explaining the guide surface angle in the guide pad for drilling according to an embodiment of the present invention.
도 10은 본 발명의 일 실시예에 따른 드릴용 가이드 패드에서 체결면 각도를 설명하기 위한 도면이다.10 is a view for explaining the fastening surface angle in the guide pad for a drill according to an embodiment of the present invention.
도 11는 본 발명의 일 실시예에 따른 드릴용 가이드 패드의 다른 예를 설명하기 위한 도면이다.11 is a view for explaining another example of a guide pad for a drill according to an embodiment of the present invention.
<도면의 주요 참조 부호에 대한 설명><Description of Major Reference Marks in Drawing>
10: 툴 홀더 100: 드릴 헤드10: tool holder 100: drill head
110: 섕크 120: 헤드110: shank 120: head
122: 엔드 페이스 130: 포켓122: end face 130: pocket
131, 132: 제1, 제2 플로어 체결면131 and 132: first and second floor fastening surfaces
133, 134: 제1, 제2 사이드 체결면133 and 134: first and second side fastening surfaces
135, 136: 제1, 제2 여유면135, 136: first and second clearances
137: 센터 체결면137: center fastening surface
138: 개구부138: opening
141: 메인 그루브141: main groove
142, 143: 서브 그루브142, 143: sub groove
150: 암나사150: female thread
200: 가이드 패드200: guide pad
202: 체결 홀202: fastening hole
211, 212, 213, 214: 제1 ~ 제4 센터 가이드 서피스(guide surface)211, 212, 213, and 214: first to fourth center guide surfaces
221, 222: 제1, 제2 센터 체결면221, 222: first and second center fastening surfaces
231, 232, 233, 234: 제1 ~ 제4 체결면231, 232, 233, 234: first to fourth fastening surfaces
241, 242: 리세스241, 242: recess
251, 252, 253, 254: 제1 ~ 제4 사이드 가이드 서피스251, 252, 253, 254: first to fourth side guide surfaces
261, 262, 263, 264: 제1 ~ 제4 사이드 그루브261, 262, 263, 264: first to fourth side grooves
400: 볼트 300: 커팅 인서트400: bolt 300: cutting insert
500: 홀500: hall
510: 홀 인사이드 520: 홀 엔드510: hole inside 520: hole end
600: 절삭유600: coolant
본 발명의 이점 및 특징, 그리고 그것들을 달성하는 방법은 첨부되는 도면과 함께 상세하게 후술되어 있는 실시예를 참조하면 명확해질 것이다.Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.
이하, 첨부된 도면을 참조하여 본 발명의 실시예에 대하여 상세하게 설명한다. 이하에서 설명되는 실시예는 본 발명의 이해를 돕기 위하여 예시적으로 나타낸 것이며, 본 발명은 여기서 설명되는 실시예와 다르게 다양하게 변형되어 실시될 수 있음이 이해되어야 할 것이다. 다만, 본 발명을 설명함에 있어서 관련된 공지 기능 혹은 구성요소에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명 및 구체적인 도시를 생략한다. 또한, 첨부된 도면은 발명의 이해를 돕기 위하여 실제 축척대로 도시된 것이 아니라 일부 구성요소의 크기가 과장되게 도시될 수 있다.Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. Embodiments described below are shown by way of example in order to help understanding of the present invention, it will be understood that the present invention can be implemented in various modifications different from the embodiments described herein. However, in the following description of the present invention, if it is determined that the detailed description of the related known functions or components may unnecessarily obscure the gist of the present invention, the detailed description and the detailed illustration will be omitted. In addition, the accompanying drawings may be exaggerated in size of some components, rather than drawn to scale to facilitate understanding of the invention.
한편, 후술되는 용어들은 본 발명에서의 기능을 고려하여 설정된 용어들로서 이는 생산자의 의도 또는 관례에 따라 달라질 수 있으므로 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.Meanwhile, terms to be described below are terms set in consideration of functions in the present invention, which may vary depending on the intention or custom of the producer, and the definitions thereof should be made based on the contents throughout the present specification.
명세서 전체에 걸쳐 동일 참조 부호는 동일 구성요소를 지칭한다.Like reference numerals refer to like elements throughout.
이하, 도 1 내지 도 6을 참조하여 본 발명의 일 실시예에 따른 드릴 공구에 대해서 설명한다.Hereinafter, a drill tool according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 to 6.
첨부도면 도 1, 도 2 및 도 3은 본 발명의 일 실시예에 따른 드릴 공구를 설명하기 위한 분해 사시도면, 조립 사시도면 및 정면도이다. 첨부도면 도 4는 도 3의 A-A선 단면도이다. 첨부도면 도 5는 도 3의 B-B선 단면도이다. 첨부도면 도 6는 본 발명의 일 실시예에 따른 드릴 공구에서 절삭유가 이동되는 유로를 설명하기 위한 단면도이다.1, 2 and 3 are exploded perspective view, assembly perspective view and front view for explaining a drill tool according to an embodiment of the present invention. 4 is a cross-sectional view taken along the line A-A of FIG. 5 is a cross-sectional view taken along the line B-B in FIG. 6 is a cross-sectional view for describing a flow path in which cutting oil is moved in a drill tool according to an exemplary embodiment of the present invention.
깊은 홈 가공용 드릴은 툴 홀더(10)에 드릴 헤드(100)가 설치된다. 툴 홀더(10)와 드릴 헤드(100)는 튜브(tube)형태로 형성되는 것으로, 칩(chip)은 튜브의 홀을 통하여 배출될 수 있다.In the deep grooving drill, the drill head 100 is installed in the tool holder 10. The tool holder 10 and the drill head 100 are formed in a tube shape, and chips may be discharged through holes in the tube.
한편, 드릴 헤드(100)는 섕크(110)의 한쪽에 헤드(120)가 형성된 것이고, 섕크(110)에 나선을 형성하여 툴 홀더(10)와 나선으로 결합시킬 수 있다. 또한, 헤드(120)에는 가이드 패드(200)와 커팅 인서트(300)가 설치된다.On the other hand, the drill head 100 is the head 120 is formed on one side of the shank 110, it is possible to form a spiral on the shank 110 may be coupled to the tool holder 10 in a spiral. In addition, the head 120 is provided with a guide pad 200 and the cutting insert 300.
상술한 헤드(120)에는 포켓(130)이 형성되고, 상술한 가이드 패드(200)는 포켓(130)에 삽입된 상태에서 포켓(130)에 형성된 암나사(150)에 볼트(400)를 체결하여 조립된다.A pocket 130 is formed in the head 120, and the guide pad 200 is fastened to the female screw 150 formed in the pocket 130 by being inserted into the pocket 130. Are assembled.
포켓(130)은, 대략 마름모꼴 형상으로 형성된 것이다. 좀 더 상세하게는, 바닥에 제1, 제2 플로어 체결면(131, 132)이 형성되고, 드릴 헤드(100)가 회전하는 방향을 기준으로 가이드 패드(200)에 가압되는 쪽에 제1, 제2 사이드 체결면(133, 134)이 형성된다. 제1, 제2 사이드 체결면(133, 134)과 마주하는 상대 쪽에는 각각 제1, 제2 여유면(135, 136)이 형성된다.The pocket 130 is formed in a substantially rhombic shape. More specifically, the first and second floor fastening surfaces 131 and 132 are formed on the bottom, and the first and second sides are pressed to the guide pad 200 based on the direction in which the drill head 100 rotates. Two side fastening surfaces 133 and 134 are formed. First and second clearance surfaces 135 and 136 are formed on the opposite side facing the first and second side fastening surfaces 133 and 134, respectively.
또한, 드릴 헤드(100)가 홀(hole)을 가공할 때에 진입되는 방향을 기준으로 가이드 패드(200)에 가압되는 쪽에 센터 체결면(137)이 형성되고, 센터 체결면(137)과 마주하는 상대 쪽에의 엔드 페이스(122) 쪽에는 개구부(138)가 형성된다.In addition, the center fastening surface 137 is formed on the side pressed by the guide pad 200 based on the direction in which the drill head 100 enters the hole when machining the hole, and faces the center fastening surface 137. An opening 138 is formed on the side of the end face 122 on the opposite side.
한편, 제1 플로어 체결면(131)과 제2 플로어 체결면(132)은 도 4에 나타낸 바와 같이, V자 형상을 이룬다.On the other hand, the first floor fastening surface 131 and the second floor fastening surface 132 has a V-shape, as shown in FIG.
제1 사이드 체결면(133)과 제2 사이드 체결면(134)은 도 1 내지 도 3에 나타낸 바와 같이, V자 형상을 이룬다. 마찬가지로, 제1 여유면(135)과 제2 여유면(136)은 도 1 내지 도 3에 나타낸 바와 같이, V자 형상을 이룬다. 이로써 홀 가공 도중에 볼트(400)의 조임력이 느슨해지더라도 드릴 헤드(100)가 홀(500)에서 빠져나올 때에 가이드 패드(200)가 포켓(130)에서 이탈되지 않는 구조이므로 가이드 패드(200)를 쉽게 끌어낼 수 있게 된다.As shown in FIGS. 1 to 3, the first side fastening surface 133 and the second side fastening surface 134 form a V shape. Similarly, the first clearance surface 135 and the second clearance surface 136 have a V shape, as shown in FIGS. 1 to 3. As a result, even when the tightening force of the bolt 400 is loosened during the hole machining, the guide pad 200 is not detached from the pocket 130 when the drill head 100 exits the hole 500. It can be easily pulled out.
또한, 헤드(120)에는 포켓(130)과 연결되는 표면에 메인 그루브(141)가 형성된다. 메인 그루브(141)는 헤드(120)의 외경표면보다 낮게 홈이 형성된 것으로써 절삭유가 흐르도록 하는 유로로 이용된다.In addition, the head 120 is formed with a main groove 141 on the surface connected to the pocket 130. The main groove 141 is used as a flow path through which the cutting oil flows because the groove is formed lower than the outer diameter surface of the head 120.
또한, 센터 체결면(137)의 양쪽에는 각각 서브 그루브(142, 143)가 형성된다. 이로써 메인 그루브(141)를 통하여 유입되는 절삭유는 서브 그루브(142, 143)를 통하여 제1, 제2 플로어 체결면(131, 132)쪽으로 이동될 수 있다. 즉, 메인 그루브(141)와 서브 그루브(142, 143)는 절삭유가 포켓(130)의 내부로 유입될 수 있도록 유도되는 것이다. Sub grooves 142 and 143 are formed on both sides of the center fastening surface 137, respectively. As a result, the cutting oil introduced through the main groove 141 may be moved toward the first and second floor fastening surfaces 131 and 132 through the sub grooves 142 and 143. That is, the main groove 141 and the sub grooves 142 and 143 are guided to allow the cutting oil to flow into the pocket 130.
즉, 도 6에 나타낸 바와 같이, 절삭유(600)는 홀(500)과 툴 홀더(10)의 사이에서 제공된다. 이후 절삭유(600)는 헤드(120)에 형성된 메인 그루브(141)을 통하여 유입되고, 서브 그루브(142, 143)에 유입된다. 이후, 절삭유(600)는 제1, 제2 플로어 체결면(131, 132)을 따라 이동되어 개구부(138)에 벗어나 엔드 페이스(122)쪽, 즉, 홀 엔드(520)쪽으로 분출된다.That is, as shown in FIG. 6, the cutting oil 600 is provided between the hole 500 and the tool holder 10. Thereafter, the cutting oil 600 flows through the main groove 141 formed in the head 120 and flows into the sub grooves 142 and 143. Thereafter, the cutting oil 600 is moved along the first and second floor fastening surfaces 131 and 132 to be ejected out of the opening 138 to the end face 122, that is, toward the hole end 520.
홀 엔드(520)에서는 칩이 발생되는데, 발생된 칩은 절삭유의 압력에 의해 밀리려서 튜브(tube)의 내부 홀을 따라 외부로 배출된다. 한편, 상술한 바와 같이, 가이드 패드(200)와 포켓(130)의 사이에 유로가 형성됨으로써 절삭유(600)의 압력저하가 방지되고, 이로써 고압의 절삭유(600)가 홀 엔드(520)에 제공될 수 있어 칩 배출에 더욱 유리한 효과가 있다.Chips are generated at the hole end 520, which is pushed out by the pressure of the cutting oil and is discharged to the outside along the inner hole of the tube. On the other hand, as described above, the flow path is formed between the guide pad 200 and the pocket 130 to prevent the pressure drop of the cutting oil 600, thereby providing a high-pressure cutting oil 600 to the hole end 520 Can have a more favorable effect on chip evacuation.
또한, 절삭유(600)가 가이드 패드(200)와 포켓(130)의 사이를 통과함으로써 가이드 패드(200)의 냉각효과가 증대된다.In addition, as the cutting oil 600 passes between the guide pad 200 and the pocket 130, the cooling effect of the guide pad 200 is increased.
가이드 패드(200)는 체결 홀(202)을 중심으로 마름모꼴 형상으로 제공된다. 좀 더 상세하게는, 전면에서 볼 때에 상하 좌우가 대칭되는 형상이고, 뒤집기 전의 형상과 뒤집은 후의 형상이 동일하다.The guide pad 200 is provided in a rhombic shape with respect to the fastening hole 202. In more detail, it is a shape which top, bottom, left and right are symmetrical when seen from the front surface, and the shape before flipping and the shape after flipping are the same.
이하, 첨부도면 도 7 내지 도 10을 참조하여 좀 더 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings 7 to 10 will be described in more detail.
첨부도면 도 7는 본 발명의 일 실시예에 따른 드릴용 가이드 패드의 예를 설명하기 위한 평면도, 정면도, 측면도이다. 첨부도면 도 8는 본 발명의 일 실시예에 따른 드릴용 가이드 패드의 작용을 설명하기 위한 도면이다. 첨부도면 도 9는 본 발명의 일 실시예에 따른 드릴용 가이드 패드에서 가이드 서피스 각도를 설명하기 위한 도면이다. 첨부도면 도 10은 본 발명의 일 실시예에 따른 드릴용 가이드 패드에서 체결면 각도를 설명하기 위한 도면이다.Accompanying drawings Figure 7 is a plan view, front view, side view for explaining an example of a guide pad for a drill according to an embodiment of the present invention. Accompanying drawings Figure 8 is a view for explaining the operation of the guide pad for a drill according to an embodiment of the present invention. 9 is a view for explaining the guide surface angle in the guide pad for drilling according to an embodiment of the present invention. Accompanying drawings Figure 10 is a view for explaining the fastening surface angle in the guide pad for a drill according to an embodiment of the present invention.
가이드 패드(200)는 도 7의 (b)에 나타낸 바와 같이 정면에서 볼 때에 체결 홀(202)을 중심으로 좌우가 대칭이고, 상하가 대칭되는 형상이며, 전체적으로 마름모꼴 형상을 이룬다.As illustrated in FIG. 7B, the guide pad 200 has a shape in which the left and right are symmetrical and the top and bottom are symmetrical with respect to the fastening hole 202 as viewed from the front, and have a rhombic shape as a whole.
또한, 도 7의 (a)(c)에 나타낸 바와 같이, 전면과 배면이 상하 좌우 대칭되는 형상이다.Moreover, as shown to Fig.7 (a) (c), it is a shape in which the front surface and the back surface are symmetric up-down.
즉, 본 발명의 일실시예에 따른 가이드 패드(200)는 어느 방향으로 돌려놓든지 돌리기 전과 돌린 후의 형상이 동일하고, 마찬가지로 뒤집어 놓더라도 동일한 형상을 가진다.That is, the guide pad 200 according to an embodiment of the present invention has the same shape before and after turning in any direction, and even when turned upside down, the guide pad 200 has the same shape.
가이드 패드(200)는 체결 홀(202)을 기준으로 전면에서 상하에 각각 제1, 제2 센터 가이드 서피스(211, 212)가 형성된다. 또한, 가이드 패드(200)는 체결 홀(202)을 기준으로 배면에서 상하에 각각 제3, 제4 센터 가이드 서피스(213, 214)가 형성된다. 상술한 제1, 제2, 제3, 제4 센터 가이드 서피스(211, 212, 213, 214)는 볼록한 곡률로 형성될 수 있고, 곡률의 반경은 홀(500)의 반경과 같거나 작은 크기이다.The guide pad 200 has first and second center guide surfaces 211 and 212 formed on the front and bottom of the fastening hole 202, respectively. In addition, the guide pads 200 are provided with third and fourth center guide surfaces 213 and 214 above and below the back of the fastening holes 202, respectively. The first, second, third, and fourth center guide surfaces 211, 212, 213, and 214 described above may be formed with convex curvatures, and the radius of curvature is equal to or smaller than the radius of the hole 500. .
또한, 가이드 패드(200)는 상하단면에 각각 제1, 제2 센터 체결면(221, 222)이 형성된다.In addition, the guide pads 200 have first and second center fastening surfaces 221 and 222 on upper and lower end surfaces, respectively.
또한, 가이드 패드(200)는 체결 홀(202)을 기준으로 어느 한쪽에 제1, 제2 체결면(231, 232)이 형성되고, 다른 한쪽에 제3, 제4 체결면(233, 234)이 형성된다. 상술한 제1 체결면(231)과 제2 체결면(232)은 V자 형상을 이루고, 마찬가지로 제3 체결면(233)과 제4 체결면(234)은 V자 형상을 이룬다.In addition, the guide pad 200 has first and second fastening surfaces 231 and 232 formed on either side of the fastening hole 202 and the third and fourth fastening surfaces 233 and 234 on the other side thereof. Is formed. The first fastening surface 231 and the second fastening surface 232 described above form a V shape, and similarly, the third fastening surface 233 and the fourth fastening surface 234 form a V shape.
또한, 가이드 패드(200)의 체결 홀(202)에는 상술한 제1, 제2 센터 가이드 서피스(211, 212)와 상술한 제3, 제4 센터 가이드 서피스(213, 214)의 표면보다 낮게 각각 리세스(241, 242)가 형성된다. 리세스(241, 242)는 가이드 패드(200)가 포켓(130)에 설치되면, 볼트(400)의 주변에 공간을 확보하도록 하는 작용을 한다. 즉 절삭유(600)는 제1, 제2 플로어 체결면(131,132)의 깊을 골을 따라 이동하지만, 볼트(400)가 배치된 부분에서는 절삭유(600)가 리세스(241, 242)를 따라 우회하여 이동되는 것이다.In addition, the fastening holes 202 of the guide pad 200 are lower than the surfaces of the first and second center guide surfaces 211 and 212 and the third and fourth center guide surfaces 213 and 214 described above, respectively. Recesses 241 and 242 are formed. The recesses 241 and 242 serve to secure a space around the bolt 400 when the guide pad 200 is installed in the pocket 130. That is, the cutting oil 600 moves along the depths of the first and second floor fastening surfaces 131 and 132, but the cutting oil 600 bypasses the recesses 241 and 242 at the portion where the bolt 400 is disposed. It is moved.
또한, 가이드 패드(200)는 체결 홀(202)을 기준으로 전면의 양쪽에 각각 제1, 제2 사이드 가이드 서피스(251, 252)가 형성되고, 배면의 양쪽에 각각 제3, 제4 사이드 가이드 서피스(253, 254)가 형성된다.In addition, the guide pads 200 are provided with first and second side guide surfaces 251 and 252 on both sides of the front surface of the fastening hole 202, respectively, and third and fourth side guides on both sides of the back surface, respectively. Surfaces 253 and 254 are formed.
한편 도 7의 (a) 및 도 8에 나타낸 바와 같이, 상술한 제1 사이드 가이드 서피스(251)와 제2 사이드 가이드 서피스(252)는 V자 형상을 이룬다. 마찬가지로, 배면에 형성된 제3 사이드 가이드 서피스(253)와 제4 사이드 가이드 서피스(254)는 V자 형상을 이룬다.Meanwhile, as illustrated in FIGS. 7A and 8, the first side guide surface 251 and the second side guide surface 252 described above have a V shape. Similarly, the third side guide surface 253 and the fourth side guide surface 254 formed on the rear face have a V shape.
이로써 도 8에 나타낸 바와 같이, 절삭유(600)가 유입되었을 때에 가이드 패드(200)에서 제1 ~ 제4 사이드 가이드 서피스(251, 252, 253, 254)에 절삭유(600)가 유입될 수 있다. 즉, 절삭유(600)가 더욱 넓은 면적으로 유입됨으로써 가이드 패드(200)에 대한 냉각작용이 향상되고, 아울러 마찰저항 저감 작용이 더욱 향상된다.Thus, as shown in FIG. 8, when the cutting oil 600 flows in, the cutting oil 600 may flow into the first to fourth side guide surfaces 251, 252, 253, and 254 from the guide pad 200. That is, by introducing the cutting oil 600 into a larger area, the cooling effect on the guide pad 200 is improved, and the frictional resistance reducing effect is further improved.
한편, 도 9에 나타낸 바와 같이, 제1 사이드 가이드 서피스(251)와 제2 사이드 가이드 서피스(252)가 이루는 제1 각도는 135°내지 155°의 범위로 설정될 수 있다.9, the first angle formed by the first side guide surface 251 and the second side guide surface 252 may be set in a range of 135 ° to 155 °.
제1 각도가 135°이상이면, 제1 사이드 가이드 서피스(251)와 홀 인사이드(510)간의 공간이 형성되고, 이로써 절삭유(600)의 유입이 원활해질 수 있다.When the first angle is 135 ° or more, a space is formed between the first side guide surface 251 and the hole inside 510, thereby smoothly introducing the cutting oil 600.
한편, 제1 각도가 135°이하로 너무 작으면, 제1 ~ 제4 체결면(231, 232, 233, 234)의 두께가 너무 얇아져 체결력이 약화될 수 있다.On the other hand, if the first angle is too small below 135 °, the thickness of the first to fourth fastening surfaces 231, 232, 233, and 234 may be so thin that the fastening force may be weakened.
또한, 제1 각도가 155°이하이면, 제1 ~ 제4 체결면(231, 232, 233, 234)의 두께를 확보할 수 있고 이로써 체결될 때에 접하는 면을 넓게 형성시킬 수 있어 체결력을 강화할 수 있다.In addition, when the first angle is 155 ° or less, it is possible to secure the thickness of the first to fourth fastening surfaces 231, 232, 233, and 234, thereby making it possible to widen the contact surface when tightening, thereby strengthening the fastening force. have.
한편, 제1 각도가 155°이상으로 너무 크면, 제1 사이드 가이드 서피스(251)와 홀 인사이드(510)간의 공간이 형성되지 않거나 너무 작은 공간이 형성되므로 절삭유(600)의 유입이 원활하지 않을 수 있다.On the other hand, if the first angle is too large, 155 ° or more, since the space between the first side guide surface 251 and the hole inside 510 is not formed or a small space is formed, the inflow of the cutting oil 600 may not be smooth. have.
따라서 상술한 바와 같이, 제1 사이드 가이드 서피스(251)와 제2 사이드 가이드 서피스(252)가 이루는 제1 각도는 135°내지 155°의 범위로 설정되는 것이 바람직할 수 있고, 마찬가지로, 제3 사이드 가이드 서피스(253)와 제4 사이드 가이드 서피스(254)가 이루는 제1 각도는 135°내지 155°의 범위로 설정될 수 있는 것이다.Therefore, as described above, the first angle formed by the first side guide surface 251 and the second side guide surface 252 may be preferably set to a range of 135 ° to 155 °, and likewise, the third side The first angle formed by the guide surface 253 and the fourth side guide surface 254 may be set in the range of 135 ° to 155 °.
한편, 도 10에 나타낸 바와 같이, 제1 체결면(131)과 제2 체결면(232)이 이루는 예각의 제2 각도는 20°내지 40°로 설정할 수 있다.Meanwhile, as shown in FIG. 10, the second angle of the acute angle formed by the first fastening surface 131 and the second fastening surface 232 may be set to 20 ° to 40 °.
제2 각도가 20°이상이면, 가이드 패드(200)의 폭(L)에 비교하여 제1, 제2 센터 체결면(221)의 폭(L2) 비율이 커지므로 포켓(130)에 가이드 패드(200)가 설치되었을 때에 체결력이 향상된다. 이에 부연설명하면, 드릴 헤드(100)는 홀 가공할 때에 회전하게 되고, 이로써 도 10의(a)에 나타낸 바와 같이, 헤드(120)는 제1, 제4 체결면(231, 234)에 힘을 작용한다. 또한, 가이드 패드(200)는 진동 또는 특정되지 않는 외력에 의해 체결홀(202)을 중심으로 회전하려는 힘이 발생된다. 즉 가이드 패드(200)는 상술한 복합적인 힘에 대한 강성을 가져야 한다.If the second angle is greater than or equal to 20 °, the ratio of the width L2 of the first and second center fastening surfaces 221 is greater than the width L of the guide pad 200, so that the guide pad ( When 200 is installed, the tightening force is improved. In detail, the drill head 100 rotates when the hole is machined, and as a result, as shown in FIG. 10A, the head 120 is applied to the first and fourth fastening surfaces 231 and 234. To act. In addition, the guide pad 200 generates a force to rotate about the fastening hole 202 by vibration or external force not specified. That is, the guide pad 200 should have rigidity with respect to the complex force described above.
즉, 제2 각도가 클수록 제1 체결면(231)과 제4 체결면(234)이 이루는 각도는 작아지고, 이로써 상대적으로 더욱 뾰족한 형태의 V자 형상을 이룰 수 있고, 드릴 헤드(100)가 회전하는 방향에 대하여 뾰족한 형태일수록 강성이 강해진다.That is, the larger the second angle, the smaller the angle between the first fastening surface 231 and the fourth fastening surface 234 is, thereby forming a V-shaped shape having a relatively sharper shape, and the drill head 100 is The sharper the shape, the stronger the stiffness.
반면에, 제2 각도가 20°이하이면, 가이드 패드(200)의 폭(L)에 비교하여 제1, 제2 센터 체결면(221)의 폭(L2) 비율이 작아지므로 제1 체결면(231)과 제4 체결면(234)이 이루는 각도 더욱 넓어지므로 V자 형상으로 인한 작용효과가 미미할 수 있다.On the other hand, when the second angle is 20 ° or less, the ratio of the width L2 of the first and second center fastening surfaces 221 is smaller than that of the width L of the guide pad 200. Since the angle formed between the 231 and the fourth fastening surface 234 becomes wider, the effect due to the V shape may be insignificant.
또한, 제2 각도가 40°이상이면, 제1, 제2 센터 체결면(221)의 폭(L2)이 너무 작아질 수 있고, 이와 같이, 폭(L2)이 너무 작으면 드릴 헤드(100)가 홀 가공할 때에 진입되는 방향으로 작용되는 힘에 대한 강성이 약화될 수 있다.In addition, when the second angle is 40 ° or more, the width L2 of the first and second center fastening surfaces 221 may be too small. Thus, when the width L2 is too small, the drill head 100 may be smaller. The rigidity with respect to the force acting in the entering direction at the time of hole machining can be weakened.
한편, 제2 각도가 40°이하이면, 제1, 제2 센터 체결면(221)의 폭(L2)을 확보할 수 있고, 이와 같이, 폭(L2)을 확보함으로써 드릴 헤드(100)가 홀 가공할 때에 진입되는 방향으로 작용되는 힘에 대한 강성이 가질 수 있다.On the other hand, if the second angle is 40 ° or less, the width L2 of the first and second center fastening surfaces 221 can be secured. In this way, the drill head 100 can be drilled by securing the width L2. It may have a rigidity against the force acting in the entering direction when machining.
즉, 상술한 바와 같이, 제2 각도는 20°내지 40°로 설정하면, 드릴 헤드(100)가 회전할 때에 포켓(130)에서 가이드 패드(200)가 이탈되지 않고 양호한 체결력을 구현할 수 있고, 드릴 헤드(100)가 홀에 진입될 때에 작용되는 힘에 대한 강성을 가질 수 있어 가이드 패드(200)를 포켓(130)에 더욱 견고하게 고정시킬 수 있게 된다.That is, as described above, when the second angle is set to 20 ° to 40 °, when the drill head 100 rotates, the guide pad 200 may not be detached from the pocket 130 and a good fastening force may be realized. Since the drill head 100 may have rigidity with respect to the force applied when the drill head 100 enters the hole, the guide pad 200 may be more firmly fixed to the pocket 130.
다른 한편으로, 가이드 패드(200)에는 제1, 제2 센터 체결면(211, 222)과 인접한 제1 ~ 제4 체결면(231 ~ 234)에 각각 제1 ~ 제4 사이드 그루브(261 ~ 264)를 형성할 수 있다. 상술한 제1 ~ 제4 사이드 그루브(261 ~ 264)는 가이드 패드(200)가 포켓(130)에 설치되었을 때에 서브 그루브(142, 143)와 마주하게 되고 이로써 더욱 큰 유로가 형성될 수 있다. 즉 절삭유(600)가 포켓(130)의 내부로 더욱 쉽게 유입되도록 유도할 수 있는 것이다.On the other hand, the guide pad 200 includes first to fourth side grooves 261 to 264 on the first to fourth fastening surfaces 231 to 234 adjacent to the first and second center fastening surfaces 211 and 222, respectively. ) Can be formed. The first to fourth side grooves 261 to 264 described above face the sub grooves 142 and 143 when the guide pad 200 is installed in the pocket 130, thereby forming a larger flow path. That is, the cutting oil 600 may be induced to flow into the inside of the pocket 130 more easily.
또 다른 한편으로, 가이드 패드(200)는 중앙에 위치된 제1 ~ 제4 가이드 서피스(211, 212, 213, 214)가 홀 인사이드(510)와 슬립(slip)되는 것으로 설명하였지만, 이와는 반대로 제1 ~ 제4 사이드 가이드 서피스(251, 252, 253, 254)가 홀 인사이드(510)와 슬립될 수 있다. 이는 첨부도면 도 11을 참조하여 설명한다.On the other hand, the guide pad 200 has been described that the first to fourth guide surfaces 211, 212, 213, 214 located in the center is slipped with the hole inside 510, on the contrary The first to fourth side guide surfaces 251, 252, 253, and 254 may slip with the hole inside 510. This will be described with reference to FIG. 11.
첨부도면 도 11는 본 발명의 일 실시예에 따른 드릴용 가이드 패드의 다른 예를 설명하기 위한 도면이다.Accompanying drawings Figure 11 is a view for explaining another example of a guide pad for a drill according to an embodiment of the present invention.
도 11에 기재한 가이드 패드(200)는 중앙에 위치된 제1 ~ 제4 가이드 서피스(211, 212, 213, 214)를 평탄한 형상으로 제공하고, 제1 ~ 제4 사이드 가이드 서피스(251, 252, 253, 254)를 볼록하게 곡률을 가지도록 제공할 수 있다. 즉, 제1 ~ 제4 사이드 가이드 서피스(251, 252, 253, 254)와 홀 인사이드(510)이 슬립되는 것이다. 한편, 상술한 제1 ~ 제4 가이드 서피스(211, 212, 213, 214)와 홀 인사이드(510)의 사이에는 공간이 형성됨으로써 그 공간에 절삭유(600)가 유입될 수 있다.The guide pad 200 illustrated in FIG. 11 provides the first to fourth guide surfaces 211, 212, 213, and 214 in a flat shape, and the first to fourth side guide surfaces 251 and 252. , 253 and 254 may be provided to have convex curvature. That is, the first to fourth side guide surfaces 251, 252, 253, and 254 and the hole inside 510 slip. Meanwhile, since a space is formed between the first to fourth guide surfaces 211, 212, 213, and 214 and the hole inside 510, the cutting oil 600 may flow into the space.
즉, 절삭유(600)에 의해 냉각작용 및 마찰저항 저감 작용을 구현하는 것이다.That is, the cutting oil 600 implements the cooling action and the frictional resistance reduction action.
상술한 바와 같이 이루어진 본 발명의 일실시예에 따른 드릴용 가이드 패드(200) 및 드릴 헤드(100)는 전면과 배면의 형상을 동일하게 형성하고, 좌측면과 우측면 형상으로 동일하게 형성함으로써, 체결 홀을 기준으로 180도 돌려서 장착하여 사용할 수 있고, 전면과 배면을 뒤집어서 사용할 수 있음으로써, 총 4면을 이용할 수 있고, 이로써 고가의 초경합금 재질로 제작되는 가이드 패드의 활용도를 높여 경제성을 향상시킬 수 있다. Drill guide pad 200 and the drill head 100 according to an embodiment of the present invention made as described above is formed in the same shape of the front and back, and by forming the same in the shape of the left and right sides, fastening It can be installed by turning 180 degrees around the hole, and can be used by reversing the front and back, so that a total of four sides can be used, thereby increasing the utilization of guide pads made of expensive cemented carbide material and improving economic efficiency. have.
또한, 본 발명의 일실시예에 따른 드릴용 가이드 패드(200) 및 드릴 헤드(100)는, 드릴 헤드(100)에 가이드 패드(200)를 설치함에 있어서, 드릴 헤드(100)에 형성한 포켓(130)과 가이드 패드(200)가 5면의 체결면에서 닿도록 하고, 특히, 측면에 위치된 체결면은 V자 형상으로 형성되어 체결력을 더욱 향상시켜 절삭저항에 대한 강성을 가짐으로써 흔들림 없이 안정되게 깊은 홀을 가공할 수 있게 된다.In addition, the drill guide pad 200 and the drill head 100 according to an embodiment of the present invention, in installing the guide pad 200 in the drill head 100, a pocket formed in the drill head 100 130 and the guide pad 200 are in contact with the fastening surface of the five sides, in particular, the fastening surface located on the side is formed in a V-shape to further improve the fastening force to have a rigidity for cutting resistance without shaking The deep hole can be processed stably.
또한, 본 발명의 일실시예에 따른 드릴용 가이드 패드(200) 및 드릴 헤드(100)는 드릴 헤드(100)에 형성된 포켓(130)의 측면에 그루브(groove)를 형성하고, 포켓(130)의 바닥면에 V홈 형상의 플로어 체결면을 형성함으로써, 포켓(130)에 가이드 패드(200)가 설치되면 포켓(130)의 표면과 가이드 패드(200)의 사이에 유로가 형성되고, 유로를 통하여 절삭유가 흐름으로써 냉각효과를 향상시킬 수 있다.In addition, the drill guide pad 200 and the drill head 100 according to an embodiment of the present invention forms a groove on the side of the pocket 130 formed in the drill head 100, the pocket 130 By forming the V-groove-shaped floor fastening surface on the bottom surface of the pocket 130, when the guide pad 200 is installed in the pocket 130, a flow path is formed between the surface of the pocket 130 and the guide pad 200. Through the coolant flow through it can improve the cooling effect.
또한, 본 발명의 일실시예에 따른 드릴용 가이드 패드(200) 및 드릴 헤드(100)는 가이드 패드(200)의 모서리 측면에 그루브를 더 형성할 수 있고, 이로써 절삭유의 유입을 유도할 수 있어 냉각효과를 더욱 형상시킬 수 있다.In addition, the drill guide pad 200 and the drill head 100 according to an embodiment of the present invention may further form grooves on the edge side of the guide pad 200, thereby inducing the introduction of cutting oil The cooling effect can be further shaped.
이상 첨부된 도면을 참조하여 본 발명의 실시예를 설명하였지만, 본 발명이 속하는 기술분야의 당업자는 본 발명이 그 기술적 사상이나 필수적 특징을 변경하지 않고 다른 구체적인 형태로 실시될 수 있다는 것을 이해할 수 있을 것이다.Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. will be.
그러므로 이상에서 기술한 실시예는 모든 면에서 예시적인 것이며 한정적인 것이 아닌 것으로서 이해되어야 하고, 본 발명의 범위는 후술하는 특허청구범위에 의하여 나타내어지며, 특허청구범위의 의미 및 범위 그리고 그 등가개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims, and from the meaning and scope of the claims and their equivalent concepts. All changes or modifications which come out should be construed as being included in the scope of the present invention.
본 발명에 따른 가이드 패드 및 드릴 헤드는 깊은 홈 가공용 드릴에 설치되어 홀(hole)가공을 수행하는 데에 이용될 수 있다.The guide pad and the drill head according to the present invention can be installed in a deep grooving drill and used to perform hole processing.

Claims (15)

  1. 툴 홀더(10)의 단부에 설치되고 외경에 포켓(130)이 형성된 드릴 헤드(100); 및 상기 포켓(130)에 설치되는 가이드 패드(200);를 포함하는 드릴 공구에 있어서,A drill head 100 installed at an end of the tool holder 10 and having a pocket 130 formed at an outer diameter thereof; And a guide pad (200) installed in the pocket (130).
    상기 가이드 패드(200)는,The guide pad 200,
    전면의 상하측에 각각 제1, 제2 센터 가이드 서피스(211, 212)가 형성되고,First and second center guide surfaces 211 and 212 are formed on the upper and lower sides of the front surface, respectively.
    상하측 단부에 각각 제1, 제2 센터 체결면(221, 222)이 형성되고,First and second center fastening surfaces 221 and 222 are formed at upper and lower ends, respectively.
    상기 체결 홀(202)을 중심으로 어느 한쪽에 제1, 제3 체결면(231, 233)이 형성되며, 다른 한쪽에 제2, 제4 체결면(232, 234)이 형성되고,First and third fastening surfaces 231 and 233 are formed on one side of the fastening hole 202, and second and fourth fastening surfaces 232 and 234 are formed on the other side thereof.
    상기 제1, 제2 센터 가이드 서피스(211, 212)와 상기 제1, 제3 체결면(231, 233)의 사이에 제1 사이드 가이드 서피스(251)가 형성되며,A first side guide surface 251 is formed between the first and second center guide surfaces 211 and 212 and the first and third fastening surfaces 231 and 233.
    상기 제1, 제2 센터 가이드 서피스(211, 212)와 상기 제2, 제4 체결면(232, 234)의 사이에 제2 사이드 가이드 서피스(252)가 형성되고,A second side guide surface 252 is formed between the first and second center guide surfaces 211 and 212 and the second and fourth fastening surfaces 232 and 234.
    상기 제1 사이드 가이드 서피스(251)와 상기 제2 사이드 가이드 서피스(252)는 제1각도로 V자 형상을 이루는 것을 포함하는 패드와 드릴 헤드를 가지는 드릴 공구.Said first side guide surface (251) and said second side guide surface (252) having a pad and drill head comprising a V-shape at a first angle.
  2. 제 1항에 있어서,The method of claim 1,
    상기 제1, 제2 센터 가이드 서피스(211, 212)는 볼록한 곡률로 형상이고,The first and second center guide surfaces 211 and 212 are shaped with convex curvature,
    상기 제1, 제2 사이드 가이드 서피스(251, 252)는 평탄한 형상인 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.And said first and second side guide surfaces (251, 252) are flat in shape.
  3. 제 1항에 있어서,The method of claim 1,
    상기 제1, 제2 센터 가이드 서피스(211, 212)는 평탄한 형상이고,The first and second center guide surfaces 211 and 212 have a flat shape,
    상기 제1, 제2 사이드 가이드 서피스(251, 252)는 볼록한 곡률로 형상인 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.And said first and second side guide surfaces (251, 252) are shaped with convex curvature.
  4. 제 1항에 있어서,The method of claim 1,
    상기 제1 센터 가이드 서피스(211)와 상기 제2 센터 가이드 서피스(212)의 사이에 상기 제1, 제2 센터 가이드 서피스(211, 212)의 표면보다 낮게 리세스(241)가 형성된 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.The recess 241 is formed between the first center guide surface 211 and the second center guide surface 212 lower than the surfaces of the first and second center guide surfaces 211 and 212. The drill tool which has a pad and a drill head to make.
  5. 제 1항에 있어서,The method of claim 1,
    상기 가이드 패드(200)는,The guide pad 200,
    배면의 상하측에 각각 제3, 제4 센터 가이드 서피스(213, 214)가 형성되고,Third and fourth center guide surfaces 213 and 214 are formed on the upper and lower sides of the back surface,
    상기 제3, 제4 센터 가이드 서피스(213, 214)와 상기 제1, 제3 체결면(231, 233)의 사이에 제4 사이드 가이드 서피스(254)가 형성되며,A fourth side guide surface 254 is formed between the third and fourth center guide surfaces 213 and 214 and the first and third fastening surfaces 231 and 233.
    상기 제3, 제4 센터 가이드 서피스(213, 214)와 상기 제2, 제4 체결면(232, 234)의 사이에 제3 사이드 가이드 서피스(253)가 형성되고,A third side guide surface 253 is formed between the third and fourth center guide surfaces 213 and 214 and the second and fourth fastening surfaces 232 and 234.
    상기 제1 사이드 가이드 서피스(251)와 상기 제2 사이드 가이드 서피스(252)는 제1각도로 V자 형상을 이루는 것을 포함하는 패드와 드릴 헤드를 가지는 드릴 공구.Said first side guide surface (251) and said second side guide surface (252) having a pad and drill head comprising a V-shape at a first angle.
  6. 제 5항에 있어서,The method of claim 5,
    상기 제3, 제4 센터 가이드 서피스(211, 212)는 볼록한 곡률로 형상이고,The third and fourth center guide surfaces 211 and 212 are shaped with convex curvature,
    상기 제3, 제4 사이드 가이드 서피스(251, 252)는 평탄한 형상인 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.And the third and fourth side guide surfaces (251, 252) are flat in shape.
  7. 제 5항에 있어서,The method of claim 5,
    상기 제3, 제4 센터 가이드 서피스(211, 212)는 평탄한 형상이고,The third and fourth center guide surfaces 211 and 212 have a flat shape,
    상기 제3, 제4 사이드 가이드 서피스(251, 252)는 볼록한 곡률로 형상인 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.And the third and fourth side guide surfaces (251, 252) are shaped with convex curvature.
  8. 제 5항에 있어서,The method of claim 5,
    상기 제3 센터 가이드 서피스(213)와 상기 제4 센터 가이드 서피스(214)의 사이에 상기 제3, 제4 센터 가이드 서피스(213, 214)의 표면보다 낮게 리세스(242)가 형성된 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.A recess 242 is formed between the third center guide surface 213 and the fourth center guide surface 214 to be lower than the surfaces of the third and fourth center guide surfaces 213 and 214. The drill tool which has a pad and a drill head to make.
  9. 제1항 또는 제5항에 있어서,The method according to claim 1 or 5,
    제1 각도는 135°내지 155°인 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.A drill tool having a pad and a drill head, wherein the first angle is between 135 ° and 155 °.
  10. 제 1항에 있어서,The method of claim 1,
    상기 제1 체결면(231)과 상기 제2 체결면(232)은 예각의 제2각도를 이루는 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.The first fastening surface (231) and the second fastening surface (232) is a drill tool having a pad and a drill head, characterized in that a second angle of acute angle.
  11. 제 10항에 있어서,The method of claim 10,
    상기 제2각은 20°내지 40°인 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.And the second angle is between 20 ° and 40 °.
  12. 제 1항에 있어서,The method of claim 1,
    상기 제1 센터 체결면(221)의 양측에 제1, 제2 사이드 그루브(261, 262)가 형성되고, First and second side grooves 261 and 262 are formed at both sides of the first center fastening surface 221,
    상기 제2 센터 체결면(222)의 양측에 제3, 제4 사이드 그루브(263, 264)가 형성되는 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.And a third and fourth side grooves (263, 264) are formed at both sides of the second center engagement surface (222).
  13. 제 1항에 있어서,The method of claim 1,
    상기 포켓(130)은,The pocket 130 is,
    단면 형상이 V자 형상으로 형성된 제1, 제2 플로어 체결면(131, 132);First and second floor fastening surfaces 131 and 132 having a cross-sectional shape having a V shape;
    상기 드릴 헤드(100)가 회전할 때에 상기 가이드 패드(200)에 가압하는 측면에 V자 형상으로 형성된 제1, 제2 사이드 체결면(133, 134);First and second side fastening surfaces 133 and 134 formed in a V shape on a side of the drill head 100 which is pressed against the guide pad 200 when the drill head 100 rotates;
    상기 드릴 헤드(100)가 홀 가공할 때에 진입되는 방향으로 상기 가이드 패드(200)에 가압하는 측면에 형성된 센터 체결면(137); 및A center fastening surface 137 formed on a side surface of the drill head 100 pressed against the guide pad 200 in a direction entering when the drill head 100 is holed; And
    상기 드릴 헤드(100)의 엔드 페이스(122)쪽이 개방되도록 트인 개구부(138);를 포함하는 패드와 드릴 헤드를 가지는 드릴 공구.An opening (138) opened to open the end face (122) side of the drill head (100).
  14. 제 13항에 있어서, 섕크(110)의 외경부와 상기 센터 체결면(137)이 통하도록 메인 그루브(141);가 더 형성된 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.14. The drill tool according to claim 13, further comprising a main groove (141) for communicating the outer diameter portion of the shank (110) and the center engagement surface (137).
  15. 제 14항에 있어서, 상기 센터 체결면(137)의 양측에는 상기 메인 그루브(141)와 통하도록 서브 그루브(142, 143)가 더 형성된 것을 특징으로 하는 패드와 드릴 헤드를 가지는 드릴 공구.15. The drill tool according to claim 14, wherein sub grooves (142, 143) are further formed on both sides of the center engagement surface (137) to communicate with the main groove (141).
PCT/KR2012/011678 2012-12-28 2012-12-28 Drilling tool having pad and drill head WO2014104432A1 (en)

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