WO2017052020A1 - Boring bar having expanded scope of processing - Google Patents

Boring bar having expanded scope of processing Download PDF

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Publication number
WO2017052020A1
WO2017052020A1 PCT/KR2016/004637 KR2016004637W WO2017052020A1 WO 2017052020 A1 WO2017052020 A1 WO 2017052020A1 KR 2016004637 W KR2016004637 W KR 2016004637W WO 2017052020 A1 WO2017052020 A1 WO 2017052020A1
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WO
WIPO (PCT)
Prior art keywords
saddle
boring
boring head
boring bar
adapter
Prior art date
Application number
PCT/KR2016/004637
Other languages
French (fr)
Korean (ko)
Inventor
이헌재
Original Assignee
씨엠티 주식회사
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Filing date
Publication date
Application filed by 씨엠티 주식회사 filed Critical 씨엠티 주식회사
Publication of WO2017052020A1 publication Critical patent/WO2017052020A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/02—Boring bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/04—Tool holders for a single cutting tool
    • B23B29/12—Special arrangements on tool holders

Definitions

  • the present invention relates to a boring bar, and more particularly, by inserting the saddle into the body formed integrally with the shank mounted on the tool holder of the machine tool, the saddle has a boring head fastened to the cutting tip for cutting the workpiece It can be tightened, but the position of the saddle can be finely adjusted by the rotation of the dial to adjust the position of the boring head and the cutting tip to precisely process the inner diameter of the workpiece, and can be used universally for the workpiece having various inner diameters. Boring bar with adjustable cutting tip position.
  • boring is to cut the hole to increase the diameter of the hole or increase the roughness of the inner wall by increasing the hole drilled or cutting the boring bar using a born bar when the inner wall of the hole is not smooth.
  • Such boring is mainly performed using a boring bar.
  • the chip pocket comprises a first chip pocket and a second chip pocket.
  • the first chip pocket is inclined in the range of 15 ° to 45 ° with respect to the axis of the bite main body and is opened to the outer circumferential surface of the bite main body.
  • the second chip pocket is formed along the front cutting edge of the tip, and the outer peripheral surface of the bite body opposite to the side where the first chip pocket is opened.
  • the patent has a body having a bite fixed at one end; A clamp provided at an upper portion of the body and coupled to the body to be slidably movable; A sliding type bite holder of a boring machine has been proposed, comprising: a coupling part provided between the body and the clamp to make the sliding movement of the body smoothly. Although the position can be adjusted, the precision of the dimension is reduced by fixing the body by the fastening member.
  • the position of the body may be finely moved by the pressure applied to the fastening member, and thus the position of the bite formed at the end of the body may also be shifted, and the fastening member may be loosened by vibration during use. have.
  • the present invention provides a boring bar, but configured to insert the birds in the body, and fastening the boring head fixedly coupled to the cutting tip for cutting the workpiece to the saddle, finely adjust the position of the birds by the dial
  • the inner diameter of the workpiece can be machined to precise dimensions, and the boring bar that extends the machining range that can be used universally for various workpieces with different inner diameter dimensions.
  • the purpose is to provide.
  • the groove is inserted into the stopper pin coupled to the body by the stopper pin to limit the moving distance of the bird to provide a boring bar to extend the processing range to prevent the separation of birds
  • the bottom of the saddle forms a boring head fastening groove into which the boring head can be fitted
  • the front of the saddle provides a boring bar that extends the processing range to further increase the processing range by engaging an adapter to increase the processing range.
  • Boring bar that extends the processing range according to the present invention is a boring bar for processing the inner or outer diameter of the workpiece, the boring bar is a body formed integrally with the shank mounted on the tool holder of the machine tool, and the saddle fastening groove formed in the body And a dial coupled to the boring head for cutting the workpiece, and a dial for moving the position of the birds.
  • Boring bar to expand the processing range is configured to fit the saddle in the body, and fastening the boring head is fixed to the cutting tip for cutting the workpiece to the saddle, the position of the birds fine by the dial
  • the inner diameter of the workpiece can be machined to precise dimensions, and it can be used universally for various workpieces with different inner diameter dimensions.
  • a groove is formed in the upper part of the birds, and the groove has an effect of preventing separation of the birds by inserting a stopper pin coupled to the body by restricting the movement distance of the birds, and a boring head is inserted into the bottom of the birds.
  • Figure 6 is a partial perspective view of the present invention
  • FIG. 7 is a perspective view of birds according to the present invention.
  • the present invention relates to a boring bar, and more particularly, by inserting the saddle into the body formed integrally with the shank mounted on the tool holder of the machine tool, the saddle has a boring head fastened to the cutting tip for cutting the workpiece It can be tightened, but the position of the saddle can be finely adjusted by the rotation of the dial to adjust the position of the boring head and the cutting tip to precisely process the inner diameter of the workpiece, and can be used universally for the workpiece having various inner diameters. Boring bar with adjustable cutting tip position.
  • FIG. 1 is a perspective view of the overall configuration of the present invention
  • Figure 2 is a separate configuration of the present invention
  • Figures 3 and 4 is a partial separation configuration of the present invention
  • Figure 5 is a partial perspective view of the present invention
  • Figure 6 is a partial perspective view of the configuration of the present invention
  • Figure 7 is a perspective configuration of the birds according to the present invention
  • the boring bar is expanded in the processing range according to the present invention is a boring bar for processing the inner or outer diameter of the workpiece
  • the boring head 40 is coupled to the body 10 formed integrally with the shank 11 mounted on the tool holder of the machine tool, and the saddle fastening groove 12 formed on the body 10 and for cutting the workpiece. Is characterized in that it comprises a dial 30 is fastened to the saddle 30, and to move the position of the saddle 30.
  • the shank 10 refers to a bag mounted on the tool holder of the machine tool
  • the tool holder is mounted on the tool post of the machine tool
  • the tool post may be a spindle (spindle) to which the rotational power of the machine tool is transmitted.
  • spindle spindle
  • the workpiece when rotated, it may be a general tool post or a turret tool post where rotational power is not transmitted.
  • the body 10 is integrally formed with the shank 11, and in some cases, the body 10 and the shank 11 are formed separately, and then the screws are formed on the body 10 and the shank 11, respectively. You can also When formed separately, the length or diameter of either one of the body 10 or the shank 11 can be made different to make a series for use in various tool holders.
  • the saddle fastening groove 12 is formed in the body 10, the saddle fastening groove 12 shown is formed into a predetermined depth deep into the cylinder from one side of the body, is formed to communicate with the seat groove 18 to be described later,
  • the saddle 30 is fastened to the saddle fastening groove 12, and the boring head 40 for cutting the workpiece is fastened to the saddle.
  • the saddle 30 is moved in position by the dial 20 coupled with the axial bolt 31 formed on one side of the saddle (30).
  • one side of the saddle 30 is formed integrally with a screw threaded shaft bolt 31, the shaft bolt 31 is coupled to the boss portion 22 of the dial 20 by screws, the boss portion ( 22 is coupled in a state capable of rotating only by the bearing 23 so that when the dial 2 is rotated, the boss portion 22 is also rotated, whereby the saddle 30 which cannot be rotated in the state of being fastened to the body is a shaft bolt ( 31) is moved in the direction of the center of rotation.
  • the saddle 30 and the axial bolt 31 is formed integrally, which may also be formed separately in some cases, the axial bolt 31 is protruded to have a constant diameter in the center of the saddle (30) Screws are formed on the outer surface.
  • a screw engaged with the screw of the shaft bolt 31 is formed in the boss portion 22 of the dial 20 so that the shaft bolt 31 and the boss portion 22 of the dial are screwed together. Therefore, when the boss 22 rotates, the saddle 30 must also be rotated in a state in which no external force is applied to the saddle 30, but the saddle 30 is not rotated in the saddle fastening groove 12.
  • the shaft bolt 31 is moved in the direction of the center of rotation of the shaft bolt 31 along the thread of the boss portion 22 in accordance with the rotation of the boss portion 22 because it is coupled in a state incapable.
  • one side of the body 10 that is, the opposite side of the side of the saddle fastening groove 12 is formed with a seat groove 18 to a certain depth It is formed, the bearing 23 is fixedly coupled to the seat groove 18, the boss portion 22 of the dial 20 is fixedly coupled to the inner ring of the bearing 23 by the interference fit method. . That is, the outer ring of the bearing 23 is fixed to the seat groove 18 by the interference fitting method, the inner ring is fixed to the boss portion 22 of the dial by the interference fitting method so that the dial 20 is rotated by the bearing.
  • the state is fixed to the body 10 in a possible state.
  • the dial 20 is composed of a head portion 21 is formed a scale and a boss portion 22 formed with a screw on the inner circumferential surface, chamfered and chamfered on the upper portion of the seat groove 18 By displaying the distance of birds moved per division of the dial, the user can easily know the distance of birds.
  • the position of the saddle 30 can be fixed by using a set screw 24 which is screwed through one side of the body 10.
  • the outer surface of the saddle 30 which meets the end cross section of the set screw 24 is a chamfered 36 chamfered in a plane of the appropriate width and the contact area with the end cross section of the set screw 24 is widened so that the saddle ( 30) the fixing force is improved.
  • the saddle 30 has a groove 32 formed at an upper side opposite to the side where the boring head fastening groove 35 starts, and the stopper pin 16 is inserted into the groove 32.
  • the stopper pin 16 is inserted into the groove 32.
  • one surface of the stopper pin 16 is always kept in contact with the outer surface of the groove 32 so that the saddle 30 is clockwise relative to the center axis of the birds Or counterclockwise movement.
  • a guide pin 17 is fitted to one side of the body separately from the stopper pin 16, and a part of the guide pin 17 is inserted into the long hole 33 formed in the saddle 30, thereby providing a saddle 30. At the same time serves to guide the movement of the saddle (30) while preventing rotation.
  • the boring head fastening groove 35 into which the boring head 40 can be fitted is formed at the bottom of the saddle 30.
  • the boring head fastening groove 35 shown in the drawing has a cylindrical shape, and the boring head fastening groove 35 is formed. ) Is boring head 40 is fastened.
  • the boring head 40 is composed of a shank portion 41 having a cylindrical shape and a head portion 42 having a hexahedral block shape to be engaged with the shape of the boring head fastening groove 35, and the head portion 42 is cut A tip fastening groove 43 is formed, and the cutting tip fastening groove 43 has a cutting tip 44 having a triangular cross section fastened by a bolt, so that the cutting tip can be replaced when it is necessary to replace it during use.
  • the boring head 40 is inserted into the boring head fastening groove 35 and is completely fixed to the saddle 30 by the fixing bolt 39.
  • the shank portion 41 of the boring head 40 has a shank portion 41.
  • the inclined chamfered portion 45 is formed so that a portion of the inclined portion is inclined so that the shank portion 41 is pushed into the boring head fastening groove 35 when the boring head 40 is fixed by the fixing bolt 39.
  • the end surface of the shank portion 41 and the end surface of the boring head fastening groove 35 are brought into close contact with each other, thereby increasing the fastening force of the boring head 40, and bringing the fastening position of the boring head 40 constant. .
  • the head portion 42 when chamfering the shank portion 41 of the boring head 40 to a surface parallel to the central axis of the shank portion 41, the head portion 42 is pushed to push the boring head fastening groove to the end surface of the shank portion 41.
  • the tightening force is increased only by tightening the fixing bolt 39 while maintaining the state in close contact with the end surface of the 35, and the boring head can be fastened to a constant position at all times.
  • the fixing work of the boring head 40 is very inconvenient. And its precision cannot be guaranteed.
  • the inclined chamfered portion 45 chamfered so that a portion of the shank portion 41 is inclined, the shank portion 41 is inwardly of the boring head fastening groove 35, the more the fixing bolt 39 is closed due to its own inclined surface.
  • the boring head 40 By being pushed in, the boring head 40 can be fixed at a constant position at all times, and the fastening force can be further increased.
  • the high fastening force of the boring head 40 is to prevent the shaking of the boring head 40 to improve the surface roughness of the workpiece.
  • the boring head 40 is fixed by a fixing bolt 39 fastened to a bolt hole 37 formed at the front of the saddle 30, and the bolt hole 37 and the boring head are fixed.
  • the fastening groove 35 is formed in a predetermined amount eccentric state in the center axis of the saddle 30 can take a thick thickness of the cutting tip 44 is fastened to the boring head 40 (in Figure 7 in front of the saddle In the case of the immediately visible configuration, the leader line is indicated by the solid line, and in the case of the configuration that is not immediately visible and hidden inside, the leader line is indicated by the hidden line).
  • the upper surface of the cutting tip 44 that is, the first contacting surface of the cutting tip 44 for cutting of the workpiece is equal to the horizontal or vertical center axis of the boring bar. Since the boring head fastening groove 35 is formed to be centered on the same position as the horizontal or vertical center axis of the boring bar, the thickness of the cutting tip 44 cannot be thickened. If the thickness of the cutting tip fastening groove 43 of the head portion 42 is to be deep because the depth of the cutting tip fastening groove 43 formed in the head portion 42 to accommodate the relatively thick cutting tip The thickness of the formed portion is inevitably reduced, and the strength is lowered.
  • the boring head fastening groove 35 is formed in a predetermined amount eccentric state in the center axis of the saddle 30, even if the thickness of the cutting tip 44 to take a thick thickness of the head portion 42 can be taken Eventually, the strength of the boring head can be increased.
  • the central axis refers to the horizontal center axis (C H ) and the horizontal center axis (C V ) of the birds, and in some cases, the boring head fastening groove ( 35 and the fastening bolt hole 37 may be formed.
  • the front of the saddle 30 can be fastened to the adapter 50 to increase the processing range as shown in Figure 4 and 6, the adapter 50 is fastened to the saddle 30 by the bolt (51) It is fixedly coupled, the position guide groove 38 formed in the saddle 30 is fitted with a position guide pin 54 fixedly coupled to the adapter 50 can always take a fixed position of the adapter 50 constant. .
  • the adapter 50 is fixed by the fastening bolt 51 on the front side of the saddle, so that the distance from the central axis of the body is relatively far away and thereby can be used for the machining of workpieces with a relatively large inner diameter, adapter ( 50) can be removed if not used, so it can be selected and used only when necessary.
  • the adapter ( 50) can be coupled to the saddle 30 to maintain a constant machining precision for the workpiece.
  • the saddle 30 has a front surface formed to have a constant curvature
  • the coupling surface of the adapter 50 is formed to have the same curvature as the curvature of the saddle 30, saddle 30 and the adapter 50 ) Are coupled to the surfaces having the same curvature, the tightening force is increased.
  • the front surface of the saddle 30 is preferably formed to have the same or similar curvature of the curvature of the body, the coupling surface of the adapter 50, that is, the surface on which the position guide pin 54 is fitted
  • the coupling surface of the adapter 50 that is, the surface on which the position guide pin 54 is fitted
  • FIG 8 is a view illustrating another embodiment of the present invention, in which the length of the head portion 62 of the boring head 60 is longer than that described above, so that the boring head 40 can be used for boring a workpiece having a larger inner diameter. will be.
  • the end portion of the head portion 62 of the boring head is formed farther from the central axis of the shank portion 61, and this boring head can be used for processing a workpiece having a larger inner diameter.
  • the present invention can alternately use three boring heads, namely, the boring head 40 shown in FIGS. 2 and 4, the boring head 60 shown in FIG. 8, and the adapter 50 shown in FIG. 4. It can be used universally for workpieces having various inner diameters, and as shown in FIG. 9, the boring head 40 together with the saddle 30 can be reciprocated in the direction of the arrow in the drawing to finely adjust the size of the inner diameter that can be cut. have.
  • the boring bar which extends the processing range according to the present invention is configured to fit the saddle in the body, and fastening the boring head fixedly coupled to the cutting tip for cutting the workpiece to the saddle, the position of the saddle on the dial It can be finely adjusted by adjusting the position of cutting tip compared to the center of rotation axis of the body, so that the inner diameter of the workpiece can be machined to precise dimensions, and the effect that can be used universally for various workpieces with different inner diameter dimensions
  • the groove is inserted into the stopper pin coupled to the body by the interference fit to limit the movement distance of the bird has the effect of preventing the separation of birds, the bottom of the birds boring head To form a boring head fastening groove into which the clamps can be fitted, There is a remarkable effect to further increase the processing range.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

The present invention relates to a boring bar and, more particularly, to a boring bar having a position-adjustable cutting tip, the boring bar being capable of precisely processing the inner diameter of a workpiece and being used universally for workpieces having various inner diameters since a saddle is inserted into a body integrally formed with a shank which is mounted on a tool holder of a machine tool, the saddle is coupled to a boring head to which the cutting tip for cutting a workpiece is coupled, and the position of the saddle can be finely adjusted by means of the rotation of a dial, and thus the positions of the boring head and the cutting tip can be adjusted.

Description

가공범위를 확장시킨 보링바Boring Bars with Extended Machining Range
본 발명은 보링바에 관한 것으로서, 더욱 상세하게는 공작기계의 공구홀더에 장착되는 생크와 일체로 형성된 몸체에 새들을 끼워 장착하고, 상기 새들에는 공작물을 절삭가공하기 위한 절삭팁이 체결된 보링헤드를 체결하되, 새들의 위치를 다이얼의 회전에 의해 미세하게 조절할 수 있어 보링헤드와 절삭팁의 위치를 조절하게 되어 공작물의 내경을 정밀하게 가공할 수 있으며, 다양한 내경을 가지는 공작물에 범용적으로 사용할 수 있는 절삭팁의 위치조절이 가능한 보링바이다.The present invention relates to a boring bar, and more particularly, by inserting the saddle into the body formed integrally with the shank mounted on the tool holder of the machine tool, the saddle has a boring head fastened to the cutting tip for cutting the workpiece It can be tightened, but the position of the saddle can be finely adjusted by the rotation of the dial to adjust the position of the boring head and the cutting tip to precisely process the inner diameter of the workpiece, and can be used universally for the workpiece having various inner diameters. Boring bar with adjustable cutting tip position.
일반적으로 보링(boring)은 드릴로 뚫은 구멍을 크게 하거나 구멍의 내벽면이 매끄럽지 못한 경우 보링바(borning bar)를 이용해 절삭가공을 해줌으로써 구멍의 직경을 확장시키거나 내벽면의 조도를 높이는 절삭가공을 말한다.In general, boring is to cut the hole to increase the diameter of the hole or increase the roughness of the inner wall by increasing the hole drilled or cutting the boring bar using a born bar when the inner wall of the hole is not smooth. Say.
이러한 보링은 주로 보링바를 이용해 행하게 되는데, 보링바와 관련된 종래기술로서는 실용신안공고 제20-1996-0006482호에 제안되어 있는 보링바이트가 있다.Such boring is mainly performed using a boring bar. As a related art related to boring bar, there is a boring bite proposed in Utility Model Publication No. 20-1996-0006482.
상기 실용신안에는 바이트본체의 선단부에 팁이 부착됨과 아울러, 이 팁의 경사면에 연속하는 칩포켓이 형성된 보링바이트에 있어서, 상기한 칩포켓은, 제1칩포켓과 제2칩포켓으로 이루어지고, 제1칩포켓은 바이트본체의 축선에 대하여 15°- 45°의 범위로 경사되어 상기한 바이트본체의 외주면에 개구됨과 아울러, 그 단면형상이 상기한 바이트본체의 저면과, 이 저면에 대하여 열림각의 관계로 형성된 측면과 이것을 원활하게 하는 곡면에 의해 형성되어 있고, 제2칩포켓은 상기한 팁의 전방절삭날을 따라, 또한 바이트본체의 상기한 제1칩포켓이 개구된 측과 반대측의 외주면에 개구되어 형성된 것을 특징으로 하는 보링바이트가 제안되어 있는데, 보링바이트의 크기 즉, 절삭팁이 항상 일정한 위치에 부착됨으로써 내경이 변화되는 공작물의 가공에는 사용이 불가능하다.In the utility model, in the boring bite having a tip attached to the tip of the bite body and a continuous chip pocket formed on the inclined surface of the tip, the chip pocket comprises a first chip pocket and a second chip pocket. The first chip pocket is inclined in the range of 15 ° to 45 ° with respect to the axis of the bite main body and is opened to the outer circumferential surface of the bite main body. The second chip pocket is formed along the front cutting edge of the tip, and the outer peripheral surface of the bite body opposite to the side where the first chip pocket is opened. A boring bite has been proposed, which is formed to be opened in the form of a boring bite. impossible to use.
이러한 점을 해결하고자 제안된 종래기술로서는 등록특허 제10-0621752호에 제안되어 있는 보링머신의 슬라이딩 타입 바이트 홀더가 있다.The prior art proposed to solve this problem is a sliding type bite holder of a boring machine proposed in Patent No. 10-0621752.
상기 특허에는 일단에 바이트가 고정되는 바디와; 이 바디의 상부에 구비되면서 상기 바디가 슬라이딩 이동가능하도록 결합된 클램프와; 상기 바디와 클램프 사이에 구비되면서 바디의 슬라이딩 이동이 원활하게 이루어지도록 하는 결합부;로 이루어진 것을 특징으로 하는 보링머신의 슬라이딩 타입 바이트 홀더가 제안되어 있는데, 클램프를 따라 바디가 슬라이딩되어 이동됨으로써 바이트의 위치를 조절할 수는 있으나 체결부재에 의해 바디를 고정해줌으로써 치수의 정밀도가 떨어진다.The patent has a body having a bite fixed at one end; A clamp provided at an upper portion of the body and coupled to the body to be slidably movable; A sliding type bite holder of a boring machine has been proposed, comprising: a coupling part provided between the body and the clamp to make the sliding movement of the body smoothly. Although the position can be adjusted, the precision of the dimension is reduced by fixing the body by the fastening member.
즉, 체결부재의 경우 체결부재에 가하는 압력에 의해 바디의 위치가 미세하게 이동될 수 있고, 이로써 바디의 끝단에 형성된 바이트의 위치 역시 이동될 수 있으며, 사용중 진동에 의해 체결부재가 느슨해질 우려가 있다.That is, in the case of the fastening member, the position of the body may be finely moved by the pressure applied to the fastening member, and thus the position of the bite formed at the end of the body may also be shifted, and the fastening member may be loosened by vibration during use. have.
따라서, 본 발명은 보링바를 제공하되 몸체에 새들을 끼울 수 있도록 구성하고, 상기 새들에는 공작물을 절삭가공하기 위한 절삭팁이 고정 결합된 보링헤드를 체결하여, 새들의 위치를 다이얼에 의해 미세하게 조절할 수 있어 몸체의 회전중심축에 비해 절삭팁의 위치를 미세하게 조절함으로써 공작물의 내경을 정밀한 치수로 가공할 수 있으며, 내경의 치수가 다른 다양한 공작물에 범용적으로 사용할 수 있는 가공범위를 확장시킨 보링바를 제공하는데 그 목적이 있다.Therefore, the present invention provides a boring bar, but configured to insert the birds in the body, and fastening the boring head fixedly coupled to the cutting tip for cutting the workpiece to the saddle, finely adjust the position of the birds by the dial By adjusting the position of the cutting tip finely compared to the center of rotation of the body, the inner diameter of the workpiece can be machined to precise dimensions, and the boring bar that extends the machining range that can be used universally for various workpieces with different inner diameter dimensions. The purpose is to provide.
또한, 새들의 상부에 요홈을 형성하고, 상기 요홈에는 몸체에 억지끼움으로 결합된 스토퍼핀을 끼워넣어 새들의 이동거리를 제한해줌으로써 새들의 분리를 방지한 가공범위를 확장시킨 보링바를 제공하는데 또 다른 목적이 있다.In addition, to form a groove in the upper portion of the bird, the groove is inserted into the stopper pin coupled to the body by the stopper pin to limit the moving distance of the bird to provide a boring bar to extend the processing range to prevent the separation of birds There is another purpose.
또한, 새들의 저면에는 보링헤드가 끼워질 수 있는 보링헤드체결홈을 형성하고, 새들의 전면에는 가공범위를 늘리기 위해 어댑터를 체결함으로써 가공범위를 더욱 늘릴 수 있는 가공범위를 확장시킨 보링바를 제공하는데 또 다른 목적이 있다.In addition, the bottom of the saddle forms a boring head fastening groove into which the boring head can be fitted, and the front of the saddle provides a boring bar that extends the processing range to further increase the processing range by engaging an adapter to increase the processing range. There is another purpose.
본 발명에 의한 가공범위를 확장시킨 보링바는 공작물의 내경이나 외경을 가공하기 위한 보링바에 있어서, 상기 보링바는 공작기계의 공구홀더에 장착되는 생크와 일체로 형성된 몸체와, 상기 몸체에 형성된 새들체결홈에 결합되며 공작물의 절삭가공을 위한 보링헤드가 체결되는 새들과, 상기 새들의 위치를 이동시켜주는 다이얼을 포함하여 구성된다.Boring bar that extends the processing range according to the present invention is a boring bar for processing the inner or outer diameter of the workpiece, the boring bar is a body formed integrally with the shank mounted on the tool holder of the machine tool, and the saddle fastening groove formed in the body And a dial coupled to the boring head for cutting the workpiece, and a dial for moving the position of the birds.
본 발명에 의한 가공범위를 확장시킨 보링바는 몸체에 새들을 끼울 수 있도록 구성하고, 상기 새들에는 공작물을 절삭가공하기 위한 절삭팁이 고정 결합된 보링헤드를 체결하여, 새들의 위치를 다이얼에 의해 미세하게 조절할 수 있어 몸체의 회전중심축에 비해 절삭팁의 위치를 미세하게 조절함으로써 공작물의 내경을 정밀한 치수로 가공할 수 있으며, 내경의 치수가 다른 다양한 공작물에 범용적으로 사용할 수 있는 효과가 있으며, 새들의 상부에 요홈을 형성하고, 상기 요홈에는 몸체에 억지끼움으로 결합된 스토퍼핀을 끼워넣어 새들의 이동거리를 제한해줌으로써 새들의 분리를 방지한 효과가 있고, 새들의 저면에는 보링헤드가 끼워질 수 있는 보링헤드체결홈을 형성하고, 새들의 전면에는 가공범위를 늘리기 위해 어댑터를 체결함으로써 가공범위를 더욱 늘릴 수 있는 현저한 효과가 있다.Boring bar to expand the processing range according to the present invention is configured to fit the saddle in the body, and fastening the boring head is fixed to the cutting tip for cutting the workpiece to the saddle, the position of the birds fine by the dial By adjusting the position of the cutting tip finely compared to the central axis of rotation of the body, the inner diameter of the workpiece can be machined to precise dimensions, and it can be used universally for various workpieces with different inner diameter dimensions. A groove is formed in the upper part of the birds, and the groove has an effect of preventing separation of the birds by inserting a stopper pin coupled to the body by restricting the movement distance of the birds, and a boring head is inserted into the bottom of the birds. Forming boring head fastening grooves and machining the front of the saddle by tightening the adapter to increase the working range A remarkable effect can be further increased up.
도 1은 본 발명의 전체구성 사시도1 is a perspective view of the overall configuration of the present invention
도 2는 본 발명의 분리구성도2 is a separate configuration of the present invention
도 3과 도 4는 본 발명의 일부분 분리구성도3 and 4 is a partially separated configuration of the present invention
도 5는 본 발명의 일부분 투시구성도5 is a partial perspective view of the present invention
도 6은 본 발명의 일부분 구성사시도Figure 6 is a partial perspective view of the present invention
도 7은 본 발명에 의한 새들의 투시구성도7 is a perspective view of birds according to the present invention
도 8은 본 발명의 타실시 예시도8 is another exemplary embodiment of the present invention
도 9는 본 발명의 사용상태도9 is a state diagram used in the present invention
본 발명은 보링바에 관한 것으로서, 더욱 상세하게는 공작기계의 공구홀더에 장착되는 생크와 일체로 형성된 몸체에 새들을 끼워 장착하고, 상기 새들에는 공작물을 절삭가공하기 위한 절삭팁이 체결된 보링헤드를 체결하되, 새들의 위치를 다이얼의 회전에 의해 미세하게 조절할 수 있어 보링헤드와 절삭팁의 위치를 조절하게 되어 공작물의 내경을 정밀하게 가공할 수 있으며, 다양한 내경을 가지는 공작물에 범용적으로 사용할 수 있는 절삭팁의 위치조절이 가능한 보링바이다.The present invention relates to a boring bar, and more particularly, by inserting the saddle into the body formed integrally with the shank mounted on the tool holder of the machine tool, the saddle has a boring head fastened to the cutting tip for cutting the workpiece It can be tightened, but the position of the saddle can be finely adjusted by the rotation of the dial to adjust the position of the boring head and the cutting tip to precisely process the inner diameter of the workpiece, and can be used universally for the workpiece having various inner diameters. Boring bar with adjustable cutting tip position.
이하, 첨부된 도면에 의해 본 발명의 바람직한 실시예를 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention by referring to the accompanying drawings in detail as follows.
도 1은 본 발명의 전체구성 사시도이고, 도 2는 본 발명의 분리구성도이며, 도 3과 도 4는 본 발명의 일부분 분리구성도이고, 도 5는 본 발명의 일부분 투시구성도이며, 도 6은 본 발명의 일부분 구성사시도이고, 도 7은 본 발명에 의한 새들의 투시구성도로써, 본 발명에 의한 가공범위를 확장시킨 보링바는 공작물의 내경이나 외경을 가공하기 위한 보링바에 있어서, 상기 보링바는 공작기계의 공구홀더에 장착되는 생크(11)와 일체로 형성된 몸체(10)와, 상기 몸체(10)에 형성된 새들체결홈(12)에 결합되며 공작물의 절삭가공을 위한 보링헤드(40)가 체결되는 새들(30)과, 상기 새들(30)의 위치를 이동시켜주는 다이얼(20)을 포함하여 구성된 것이 특징이다.1 is a perspective view of the overall configuration of the present invention, Figure 2 is a separate configuration of the present invention, Figures 3 and 4 is a partial separation configuration of the present invention, Figure 5 is a partial perspective view of the present invention, Figure 6 is a partial perspective view of the configuration of the present invention, Figure 7 is a perspective configuration of the birds according to the present invention, the boring bar is expanded in the processing range according to the present invention is a boring bar for processing the inner or outer diameter of the workpiece, the boring bar The boring head 40 is coupled to the body 10 formed integrally with the shank 11 mounted on the tool holder of the machine tool, and the saddle fastening groove 12 formed on the body 10 and for cutting the workpiece. Is characterized in that it comprises a dial 30 is fastened to the saddle 30, and to move the position of the saddle 30.
먼저, 생크(10)는 공작기계의 공구홀더에 장착되는 자루를 말하며, 상기 공구홀더는 공작기계의 공구대에 장착되는데, 상기 공구대는 공작기계의 회전동력이 전달되는 스핀들(주축)일 수도 있고, 공작물이 회전되는 경우에는 회전동력이 전달되지 않는 일반적인 공구대이거나 터렛공구대일 수도 있다.First, the shank 10 refers to a bag mounted on the tool holder of the machine tool, the tool holder is mounted on the tool post of the machine tool, the tool post may be a spindle (spindle) to which the rotational power of the machine tool is transmitted. For example, when the workpiece is rotated, it may be a general tool post or a turret tool post where rotational power is not transmitted.
상기 몸체(10)는 생크(11)와 일체로 형성되는데, 경우에 따라 몸체(10)와 생크(11)를 각각 별도로 형성한 뒤 몸체(10)와 생크(11)에 각각 나사를 형성하여 결합시킬 수도 있다. 별도로 형성할 경우 몸체(10)나 생크(11) 중 어느 한쪽의 길이나 직경을 다르게 만들어 다양한 공구홀더에 사용할 수 있도록 시리즈(series)로 만들 수 있다.The body 10 is integrally formed with the shank 11, and in some cases, the body 10 and the shank 11 are formed separately, and then the screws are formed on the body 10 and the shank 11, respectively. You can also When formed separately, the length or diameter of either one of the body 10 or the shank 11 can be made different to make a series for use in various tool holders.
상기 몸체(10)에는 새들체결홈(12)이 형성되며, 도시된 새들체결홈(12)은 몸체의 일측에서 원통으로 일정깊이 들어간 형상으로써, 후술할 자리홈(18)과 연통되도록 형성되며, 상기 새들체결홈(12)에는 새들(30)이 체결되며, 상기 새들에는 공작물의 절삭가공을 위한 보링헤드(40)가 체결된다.The saddle fastening groove 12 is formed in the body 10, the saddle fastening groove 12 shown is formed into a predetermined depth deep into the cylinder from one side of the body, is formed to communicate with the seat groove 18 to be described later, The saddle 30 is fastened to the saddle fastening groove 12, and the boring head 40 for cutting the workpiece is fastened to the saddle.
상기 새들(30)은 새들(30)의 일측에 형성된 축볼트(31)와 결합된 다이얼(20)에 의해 그 위치가 이동되게 된다.The saddle 30 is moved in position by the dial 20 coupled with the axial bolt 31 formed on one side of the saddle (30).
즉, 상기 새들(30)의 일측에는 나사산이 형성된 축볼트(31)가 일체로 형성되며, 상기 축볼트(31)는 다이얼(20)의 보스부(22)와 나사로 결합되며, 상기 보스부(22)는 베어링(23)에 의해 회전만 가능한 상태로 결합되어 있어 다이얼(2)이 회전되면 보스부(22) 역시 회전되고 이로써 몸체에 체결된 상태에서는 회전되지 못하는 새들(30)은 축볼트(31)의 회전중심축 방향으로 이동되게 된다.That is, one side of the saddle 30 is formed integrally with a screw threaded shaft bolt 31, the shaft bolt 31 is coupled to the boss portion 22 of the dial 20 by screws, the boss portion ( 22 is coupled in a state capable of rotating only by the bearing 23 so that when the dial 2 is rotated, the boss portion 22 is also rotated, whereby the saddle 30 which cannot be rotated in the state of being fastened to the body is a shaft bolt ( 31) is moved in the direction of the center of rotation.
상기 새들(30)과 축볼트(31)는 일체로 형성되는데, 이 역시 경우에 따라 각각 별도로 형성될 수 있으며, 축볼트(31)는 새들(30)의 중심부에서 일정한 직경을 가지도록 돌출되어 있고 외면에 나사가 형성되어 있다. 상기 축볼트(31)의 나사와 치합되는 나사가 다이얼(20)의 보스부(22)에 형성되어 축볼트(31)와 다이얼의 보스부(22)는 서로 나사로 결합되어 있다. 따라서, 보스부(22)가 회전하게 되면 새들(30)에 대해 별도의 외력이 작용하지 않는 상태에서는 새들(30) 역시 회전되어야 하지만, 상기 새들(30)은 새들체결홈(12)에 회전되지 못하는 상태로 결합되어 있어 결국 축볼트(31)는 보스부(22)의 회전에 따라 보스부(22)의 나사산을 따라 축볼트(31)의 회전중심축 방향대로 이동되게 된다.The saddle 30 and the axial bolt 31 is formed integrally, which may also be formed separately in some cases, the axial bolt 31 is protruded to have a constant diameter in the center of the saddle (30) Screws are formed on the outer surface. A screw engaged with the screw of the shaft bolt 31 is formed in the boss portion 22 of the dial 20 so that the shaft bolt 31 and the boss portion 22 of the dial are screwed together. Therefore, when the boss 22 rotates, the saddle 30 must also be rotated in a state in which no external force is applied to the saddle 30, but the saddle 30 is not rotated in the saddle fastening groove 12. The shaft bolt 31 is moved in the direction of the center of rotation of the shaft bolt 31 along the thread of the boss portion 22 in accordance with the rotation of the boss portion 22 because it is coupled in a state incapable.
상기 다이얼(20)과 몸체(10)의 결합상태를 도 3을 참조하여 살펴보면, 몸체(10)의 일측 즉, 새들체결홈(12)이 형성된 쪽의 반대쪽에는 일정한 깊이로 자리홈(18)이 형성되고, 상기 자리홈(18)에는 베어링(23)이 억지끼움 방식으로 고정 결합되어 있고, 다이얼(20)의 보스부(22)는 베어링(23)의 내륜에 억지끼움 방식으로 고정 결합되어 있다. 즉, 베어링(23)의 외륜은 자리홈(18)에 억지끼움 방식으로 고정되고, 내륜은 다이얼의 보스부(22)에 억지끼움 방식으로 고정되어 있어 결국 다이얼(20)은 베어링에 의해 회전이 가능한 상태로 몸체(10)에 고정되어 있는 상태가 된다.Looking at the coupling state of the dial 20 and the body 10 with reference to Figure 3, one side of the body 10, that is, the opposite side of the side of the saddle fastening groove 12 is formed with a seat groove 18 to a certain depth It is formed, the bearing 23 is fixedly coupled to the seat groove 18, the boss portion 22 of the dial 20 is fixedly coupled to the inner ring of the bearing 23 by the interference fit method. . That is, the outer ring of the bearing 23 is fixed to the seat groove 18 by the interference fitting method, the inner ring is fixed to the boss portion 22 of the dial by the interference fitting method so that the dial 20 is rotated by the bearing. The state is fixed to the body 10 in a possible state.
따라서, 다이얼(20)이 회전하면 보스부(22) 역시 회전되고 이로써 보스부(22)에 형성된 나사산과 치합되어 있는 새들(30)의 축볼트(31)가 이동되게 된다.Therefore, when the dial 20 rotates, the boss portion 22 also rotates, thereby moving the shaft bolt 31 of the saddle 30 engaged with the thread formed in the boss portion 22.
상기 다이얼(20)은 눈금이 형성되어 있는 헤드부(21)와 내부원주면에 나사가 형성된 보스부(22)로 구성되며, 자리홈(18)의 상부에는 몸체의 외면 일부를 면취하고 면취된 부분에 다이얼의 한 눈금당 이동되는 새들의 거리를 표시해줌으로써 사용자는 새들의 이동거리에 대해 손쉽게 파악할 수 있다.The dial 20 is composed of a head portion 21 is formed a scale and a boss portion 22 formed with a screw on the inner circumferential surface, chamfered and chamfered on the upper portion of the seat groove 18 By displaying the distance of birds moved per division of the dial, the user can easily know the distance of birds.
상기 새들(30)이 다이얼(20)에 의해 이동되어 적절한 위치에 도달하면, 몸체(10)의 일측을 관통하여 나사로 결합된 세트스크류(24)를 이용해 새들(30)의 위치를 고정해줄 수 있으며, 이때 세트스크류(24)의 끝 단면과 만나는 새들(30)의 외부면은 적절한 넓이의 평면으로 면취된 면취부(36)로써 세트스크류(24)의 끝 단면과의 밀착면적이 넓어져 새들(30)의 고정력이 향상된다. When the saddle 30 is moved by the dial 20 to reach a proper position, the position of the saddle 30 can be fixed by using a set screw 24 which is screwed through one side of the body 10. At this time, the outer surface of the saddle 30 which meets the end cross section of the set screw 24 is a chamfered 36 chamfered in a plane of the appropriate width and the contact area with the end cross section of the set screw 24 is widened so that the saddle ( 30) the fixing force is improved.
상기 새들(3)은 새들체결홈(12)에서 바깥쪽으로 나오는 상태가 계속되면, 축볼트(31)와 보스부(22) 사이의 나사결합이 해제되어 분리될 수 있으므로, 이를 방지하기 위해 스토퍼핀(16)이 몸체에 고정 결합되게 된다.If the saddle (3) continues to come out from the saddle fastening groove 12, the screw coupling between the shaft bolt 31 and the boss portion 22 can be released by removing the stopper pin to prevent this 16 is fixed to the body.
즉, 도 5를 참조하면, 상기 새들(30)은 보링헤드체결홈(35)이 시작된 쪽의 반대쪽인 상부에 요홈(32)이 형성되고, 상기 요홈(32)에는 스토퍼핀(16)이 끼워져 있어 새들(30)의 이동거리에 대해 제한해주게 되며, 상기 스토퍼핀(16)의 일면은 요홈(32)의 외면과 항상 접촉된 상태가 유지됨으로써 새들(30)이 새들의 중심축을 기준으로 시계방향 또는 반시계방향으로 움직이는 것을 방지한다.That is, referring to FIG. 5, the saddle 30 has a groove 32 formed at an upper side opposite to the side where the boring head fastening groove 35 starts, and the stopper pin 16 is inserted into the groove 32. There is a restriction on the movement distance of the saddle 30, one surface of the stopper pin 16 is always kept in contact with the outer surface of the groove 32 so that the saddle 30 is clockwise relative to the center axis of the birds Or counterclockwise movement.
또한, 상기 스토퍼핀(16)과는 별도로 몸체의 일측에는 가이드핀(17)이 끼워져 있으며, 상기 가이드핀(17)의 일부는 새들(30)에 형성된 장공홈(33)에 끼워져 있어 새들(30)의 회전을 방지함과 동시에 새들(30)의 이동에 대해 안내해주는 역할을 한다.In addition, a guide pin 17 is fitted to one side of the body separately from the stopper pin 16, and a part of the guide pin 17 is inserted into the long hole 33 formed in the saddle 30, thereby providing a saddle 30. At the same time serves to guide the movement of the saddle (30) while preventing rotation.
상기 새들(30)의 저면에는 보링헤드(40)가 끼워질 수 있는 보링헤드체결홈(35)이 형성되는데, 도시된 보링헤드체결홈(35)은 원통 형상이며, 상기 보링헤드체결홈(35)에는 보링헤드(40)가 체결되게 된다.The boring head fastening groove 35 into which the boring head 40 can be fitted is formed at the bottom of the saddle 30. The boring head fastening groove 35 shown in the drawing has a cylindrical shape, and the boring head fastening groove 35 is formed. ) Is boring head 40 is fastened.
상기 보링헤드(40)는 보링헤드체결홈(35)의 형상과 치합되도록 원통 형상을 가지는 생크부(41)와 육면체 블록 형상의 헤드부(42)로 구성되며, 상기 헤드부(42)에는 절삭팁체결홈(43)이 형성되며, 상기 절삭팁체결홈(43)에는 삼각형의 단면을 가지는 절삭팁(44)이 볼트에 의해 체결되어 있어 절삭팁은 사용중 교체가 필요할 시 교체가 가능하다.The boring head 40 is composed of a shank portion 41 having a cylindrical shape and a head portion 42 having a hexahedral block shape to be engaged with the shape of the boring head fastening groove 35, and the head portion 42 is cut A tip fastening groove 43 is formed, and the cutting tip fastening groove 43 has a cutting tip 44 having a triangular cross section fastened by a bolt, so that the cutting tip can be replaced when it is necessary to replace it during use.
상기 보링헤드(40)는 보링헤드체결홈(35)에 끼워진 뒤 고정볼트(39)에 의해 새들(30)과 완전히 고정되는데, 상기 보링헤드(40)의 생크부(41)에는 생크부(41)의 일부가 경사지도록 면취된 경사면취부(45)가 형성되어 있어 고정볼트(39)에 의해 보링헤드(40)가 고정될 때 생크부(41)가 보링헤드체결홈(35)의 안쪽으로 밀려 들어가도록 하여 생크부(41)의 단면과 보링헤드체결홈(35)의 끝단면이 서로 밀착되도록 하여 보링헤드(40)의 체결력을 높이며, 보링헤드(40)의 체결위치를 일정하게 가져갈 수 있다.The boring head 40 is inserted into the boring head fastening groove 35 and is completely fixed to the saddle 30 by the fixing bolt 39. The shank portion 41 of the boring head 40 has a shank portion 41. The inclined chamfered portion 45 is formed so that a portion of the inclined portion is inclined so that the shank portion 41 is pushed into the boring head fastening groove 35 when the boring head 40 is fixed by the fixing bolt 39. The end surface of the shank portion 41 and the end surface of the boring head fastening groove 35 are brought into close contact with each other, thereby increasing the fastening force of the boring head 40, and bringing the fastening position of the boring head 40 constant. .
부연하면, 보링헤드(40)의 생크부(41)에 생크부(41)의 중심축면과 평행한 면으로 면취할 경우 헤드부(42)를 밀어서 생크부(41)의 단면에 보링헤드체결홈(35)의 끝단면과 밀착된 상태를 유지하면서 고정볼트(39)를 죄어야만 체결력이 높아짐과 동시에 항상 일정한 위치로 보링헤드가 체결될 수 있는데, 이러한 보링헤드(40)의 고정작업은 매우 불편하고 그 정밀성을 보장할 수 없다. 따라서, 생크부(41)의 일부가 경사지도록 면취된 경사면취부(45)는 그 자체의 경사면으로 인해 고정볼트(39)를 죌수록 생크부(41)가 보링헤드체결홈(35)의 안쪽으로 밀려 들어가도록 하여 항상 일정한 위치에 보링헤드(40)를 고정해줄 수 있으며, 그 체결력을 더욱 높일 수 있다.In other words, when chamfering the shank portion 41 of the boring head 40 to a surface parallel to the central axis of the shank portion 41, the head portion 42 is pushed to push the boring head fastening groove to the end surface of the shank portion 41. The tightening force is increased only by tightening the fixing bolt 39 while maintaining the state in close contact with the end surface of the 35, and the boring head can be fastened to a constant position at all times. The fixing work of the boring head 40 is very inconvenient. And its precision cannot be guaranteed. Therefore, the inclined chamfered portion 45 chamfered so that a portion of the shank portion 41 is inclined, the shank portion 41 is inwardly of the boring head fastening groove 35, the more the fixing bolt 39 is closed due to its own inclined surface. By being pushed in, the boring head 40 can be fixed at a constant position at all times, and the fastening force can be further increased.
이러한 효과 즉, 보링헤드(40)의 높은 체결력은 보링헤드(40)의 떨림을 방지하여 공작물의 표면조도를 향상시키게 된다.This effect, the high fastening force of the boring head 40 is to prevent the shaking of the boring head 40 to improve the surface roughness of the workpiece.
또한, 도 7을 참조하면, 상기 보링헤드(40)는 새들(30)의 전면에 형성된 볼트홀(37)에 체결되는 고정볼트(39)에 의해 고정되되, 상기 볼트홀(37)과 보링헤드체결홈(35)은 새들(30)의 중심축에서 일정량 편심된 상태로 형성되어 있어 보링헤드(40)에 체결되는 절삭팁(44)의 두께를 두껍게 가져갈 수 있다(도 7에서는 새들의 전면에서 볼 때 바로 보이는 구성의 경우 실선으로 지시선을 표시하였고, 바로 보이지 않고 내부에 숨어있는 구성의 경우 은선으로 지시선을 표시하였다).In addition, referring to FIG. 7, the boring head 40 is fixed by a fixing bolt 39 fastened to a bolt hole 37 formed at the front of the saddle 30, and the bolt hole 37 and the boring head are fixed. The fastening groove 35 is formed in a predetermined amount eccentric state in the center axis of the saddle 30 can take a thick thickness of the cutting tip 44 is fastened to the boring head 40 (in Figure 7 in front of the saddle In the case of the immediately visible configuration, the leader line is indicated by the solid line, and in the case of the configuration that is not immediately visible and hidden inside, the leader line is indicated by the hidden line).
즉, 보링바의 경우 절삭팁(44)이 체결될 때 절삭팁(44)의 상면 즉, 절삭팁(44)이 공작물의 절삭가공을 위해 최초로 접촉되는 면은 보링바의 수평 또는 수직중심축과 같거나 일정범위 이내에 있어야 하므로, 보링헤드체결홈(35)을 보링바의 수평 또는 수직중심축과 동일한 위치가 중심이 되도록 형성하게 되면 절삭팁(44)의 두께를 두껍게 가져갈 수 없으며, 만약 절삭팁(44)의 두께를 두껍게 가져가게 되면 상대적으로 두꺼운 절삭팁을 수용하기 위해 헤드부(42)에 형성된 절삭팁체결홈(43)의 깊이가 깊어져야 하므로 상기 헤드부(42)의 절삭팁체결홈(43)이 형성된 부분의 두께가 얇아질 수밖에 없어 강도가 저하되게 된다.That is, in the case of the boring bar, when the cutting tip 44 is engaged, the upper surface of the cutting tip 44, that is, the first contacting surface of the cutting tip 44 for cutting of the workpiece is equal to the horizontal or vertical center axis of the boring bar. Since the boring head fastening groove 35 is formed to be centered on the same position as the horizontal or vertical center axis of the boring bar, the thickness of the cutting tip 44 cannot be thickened. If the thickness of the cutting tip fastening groove 43 of the head portion 42 is to be deep because the depth of the cutting tip fastening groove 43 formed in the head portion 42 to accommodate the relatively thick cutting tip The thickness of the formed portion is inevitably reduced, and the strength is lowered.
따라서, 보링헤드체결홈(35)을 새들(30)의 중심축에서 일정량 편심된 상태로 형성하여, 절삭팁(44)의 두께를 두껍게 가져가더라도 헤드부(42)의 두께를 두껍게 가져갈 수 있어 결국 보링헤드의 강도를 높일 수 있는데, 상기 중심축은 새들의 수평중심축(CH)와 수평중심축(CV)를 말하며, 경우에 따라 둘 중 하나의 중심축만 벗어나도록 보링헤드체결홈(35)과 체결볼트홀(37)을 형성할 수도 있다.Therefore, the boring head fastening groove 35 is formed in a predetermined amount eccentric state in the center axis of the saddle 30, even if the thickness of the cutting tip 44 to take a thick thickness of the head portion 42 can be taken Eventually, the strength of the boring head can be increased. The central axis refers to the horizontal center axis (C H ) and the horizontal center axis (C V ) of the birds, and in some cases, the boring head fastening groove ( 35 and the fastening bolt hole 37 may be formed.
한편, 상기 새들(30)의 전면에는 도 4 및 도 6과 같이 가공범위를 늘리기 위해 어댑터(50)가 체결될 수 있으며, 상기 어댑터(50)는 새들(30)에 체결볼트(51)에 의해 고정 결합되며, 새들(30)에 형성된 위치안내홈(38)에는 어댑터(50)에 고정 결합되어 있는 위치안내핀(54)이 끼워짐으로써 어댑터(50)의 체결위치를 항상 일정하게 가져갈 수 있다.On the other hand, the front of the saddle 30 can be fastened to the adapter 50 to increase the processing range as shown in Figure 4 and 6, the adapter 50 is fastened to the saddle 30 by the bolt (51) It is fixedly coupled, the position guide groove 38 formed in the saddle 30 is fitted with a position guide pin 54 fixedly coupled to the adapter 50 can always take a fixed position of the adapter 50 constant. .
즉, 어댑터(50)는 새들의 전면 쪽에 체결볼트(51)에 의해 고정됨으로써, 몸체의 중심축과의 거리가 상대적으로 멀어지게 되고 이로써 내경이 상대적으로 큰 공작물의 가공에 사용할 수 있으며, 어댑터(50)를 사용하지 않을 경우 분리할 수 있으므로, 필요 시에만 선택하여 사용할 수 있다.That is, the adapter 50 is fixed by the fastening bolt 51 on the front side of the saddle, so that the distance from the central axis of the body is relatively far away and thereby can be used for the machining of workpieces with a relatively large inner diameter, adapter ( 50) can be removed if not used, so it can be selected and used only when necessary.
또한, 상기 새들(30)에 형성된 위치안내홈(38)에 어댑터(50)의 위치안내핀(54)이 끼워지도록 형성하여, 어댑터(50)를 분리한 뒤 재사용할 경우 항상 일정한 위치로 어댑터(50)를 새들(30)에 결합할 수 있어 가공물에 대한 가공정밀성을 일정하게 유지할 수 있다.In addition, by forming the position guide pin 54 of the adapter 50 to the position guide groove 38 formed in the saddle 30, when the adapter 50 is separated and reused, the adapter ( 50) can be coupled to the saddle 30 to maintain a constant machining precision for the workpiece.
더욱이, 상기 새들(30)은 일정한 곡률을 가지도록 전면이 형성되고, 상기 어댑터(50)의 결합면은 상기 새들(30)의 곡률과 같은 곡률을 가지도록 형성되어 새들(30)과 어댑터(50)는 같은 곡률을 가지는 면 끼리 결합되어 체결력이 높아지게 된다.In addition, the saddle 30 has a front surface formed to have a constant curvature, the coupling surface of the adapter 50 is formed to have the same curvature as the curvature of the saddle 30, saddle 30 and the adapter 50 ) Are coupled to the surfaces having the same curvature, the tightening force is increased.
부연하면, 새들(30)의 전면은 몸체의 곡률과 동일하거나 유사한 곡률을 가지도록 형성하는 것이 바람직하고, 상기 어댑터(50)의 결합면 즉, 위치안내핀(54)이 끼워져 있는 면 역시 상기 새들의 전면과 같은 곡률을 가지도록 형성함으로써 곡면과 곡면끼리 접촉되도록 하여 접촉면적을 늘려줄 수 있다.In other words, the front surface of the saddle 30 is preferably formed to have the same or similar curvature of the curvature of the body, the coupling surface of the adapter 50, that is, the surface on which the position guide pin 54 is fitted By forming the surface with the same curvature as the front surface of the curved surface and the surface can be contacted to increase the contact area.
도 8은 본 발명의 타실시 예시도로써, 보링헤드(60)의 헤드부(62) 길이를 전술한 보링헤드(40)보다 길게 형성하여 보다 큰 내경을 갖는 공작물의 보링가공에 사용할 수 있도록 한 것이다.8 is a view illustrating another embodiment of the present invention, in which the length of the head portion 62 of the boring head 60 is longer than that described above, so that the boring head 40 can be used for boring a workpiece having a larger inner diameter. will be.
즉, 보링헤드의 헤드부(62) 끝 부분이 생크부(61)의 중심축에서 보다 멀리 떨어지도록 형성되어 있으며, 이러한 보링헤드는 내경이 더욱 큰 공작물의 가공에 사용할 수 있다.That is, the end portion of the head portion 62 of the boring head is formed farther from the central axis of the shank portion 61, and this boring head can be used for processing a workpiece having a larger inner diameter.
따라서, 본 발명은 3개의 보링헤드 즉, 도 2와 도 4에 도시된 보링헤드(40), 도 8에 도시된 보링헤드(60) 및 도 4에 도시된 어댑터(50)를 번갈아 사용할 수 있어 다양한 내경을 가지는 공작물에 범용적으로 사용할 수 있으며, 도 9와 같이 새들(30)과 함께 보링헤드(40)가 도면의 화살표 방향대로 왕복 이동됨으로써 절삭가공할 수 있는 내경의 크기를 미세하게 조절할 수 있다.Accordingly, the present invention can alternately use three boring heads, namely, the boring head 40 shown in FIGS. 2 and 4, the boring head 60 shown in FIG. 8, and the adapter 50 shown in FIG. 4. It can be used universally for workpieces having various inner diameters, and as shown in FIG. 9, the boring head 40 together with the saddle 30 can be reciprocated in the direction of the arrow in the drawing to finely adjust the size of the inner diameter that can be cut. have.
결국, 본 발명에 의한 가공범위를 확장시킨 보링바는 몸체에 새들을 끼울 수 있도록 구성하고, 상기 새들에는 공작물을 절삭가공하기 위한 절삭팁이 고정 결합된 보링헤드를 체결하여, 새들의 위치를 다이얼에 의해 미세하게 조절할 수 있어 몸체의 회전중심축에 비해 절삭팁의 위치를 미세하게 조절함으로써 공작물의 내경을 정밀한 치수로 가공할 수 있으며, 내경의 치수가 다른 다양한 공작물에 범용적으로 사용할 수 있는 효과가 있으며, 새들의 상부에 요홈을 형성하고, 상기 요홈에는 몸체에 억지끼움으로 결합된 스토퍼핀을 끼워넣어 새들의 이동거리를 제한해줌으로써 새들의 분리를 방지한 효과가 있고, 새들의 저면에는 보링헤드가 끼워질 수 있는 보링헤드체결홈을 형성하고, 새들의 전면에는 가공범위를 늘리기 위해 어댑터를 체결함으로써 가공범위를 더욱 늘릴 수 있는 현저한 효과가 있다.Eventually, the boring bar which extends the processing range according to the present invention is configured to fit the saddle in the body, and fastening the boring head fixedly coupled to the cutting tip for cutting the workpiece to the saddle, the position of the saddle on the dial It can be finely adjusted by adjusting the position of cutting tip compared to the center of rotation axis of the body, so that the inner diameter of the workpiece can be machined to precise dimensions, and the effect that can be used universally for various workpieces with different inner diameter dimensions And, to form a groove on the top of the bird, the groove is inserted into the stopper pin coupled to the body by the interference fit to limit the movement distance of the bird has the effect of preventing the separation of birds, the bottom of the birds boring head To form a boring head fastening groove into which the clamps can be fitted, There is a remarkable effect to further increase the processing range.
10; 몸체10; Body
11. 생크 11. Shank
12. 새들체결홈 12. Saddle fastening home
13, 14. 핀홀13, 14.pinhole
15. 면삭부 15. Surface Area
16. 스토퍼핀 16. Stopper Pin
17. 가이드핀17. Guide pin
20; 다이얼20; dial
21. 헤드부 21. Head
22. 보스부22. Boss
23. 베어링 23. Bearing
24. 세트스크류24. Set Screw
30; 새들30; Birds
31. 축볼트 31. Axial Bolt
32. 요홈 32. Home
33. 장공홈33. Long groove
34. 볼트홀 34. Bolt Hole
35. 보링헤드체결홈 35. Boring Head Tightening Groove
36. 면취부36. Chamfering
37. 체결볼트홀 37. Fastening Bolt Hole
38. 위치안내홈 38. Location Guide Home
39. 고정볼트39. Fixing bolt
40; 보링헤드40; Boring head
41. 생크부 41. Shank part
42. 헤드부 42. Head
43. 절삭팁체결홈43. Cutting tip fastening groove
44. 절삭팁 44. Cutting tip
45. 경사면취부45. Slope Mount
50; 어댑터50; adapter
51. 체결볼트 51. Tightening Bolt
52. 절삭팁체결홈 52. Cutting tip fastening groove
53. 절삭팁53. Cutting Tip
54. 위치안내핀54. Location Pin
60; 보링헤드60; Boring head
61. 생크부 61. Shank part
62. 헤드부 62. Head
63. 절삭팁체결홈63. Cutting tip fastening groove
64. 절삭팁 64. Cutting tip
65. 경사면취부65. Inclination

Claims (8)

  1. 공작물의 내경이나 외경을 가공하기 위한 보링바에 있어서,In the boring bar for processing the inner or outer diameter of the workpiece,
    상기 보링바는 공작기계의 공구홀더에 장착되는 생크(11)와 일체로 형성된 몸체(10)와, 상기 몸체(10)에 형성된 새들체결홈(12)에 결합되며 공작물의 절삭가공을 위한 보링헤드(40)가 체결되는 새들(30)과, 상기 새들(30)의 위치를 이동시켜주는 다이얼(20)을 포함하여 구성되며,The boring bar is coupled to the body 10 formed integrally with the shank 11 mounted to the tool holder of the machine tool, and the saddle fastening groove 12 formed in the body 10 and the boring head for cutting the workpiece ( 40 is fastened to the saddle 30, and comprises a dial 20 for moving the position of the saddle 30,
    상기 새들(30)의 저면에는 보링헤드(40)가 끼워질 수 있는 보링헤드체결홈(35)이 형성된 것이 특징인 가공범위를 확장시킨 보링바.Boring bar to extend the processing range, characterized in that the bottom of the saddle 30 is formed with a boring head fastening groove 35 into which the boring head 40 can be fitted.
  2. 제1항에 있어서,The method of claim 1,
    상기 새들(30)의 일측에는 나사산이 형성된 축볼트(31)가 일체로 형성되며, 상기 축볼트(31)는 다이얼(20)의 보스부(22)와 나사로 결합되며, 상기 보스부(22)는 베어링(23)에 의해 회전만 가능한 상태로 결합되어 있어 다이얼(2)이 회전되면 보스부(22) 역시 회전되고 이로써 몸체에 체결된 상태에서는 회전되지 못하는 새들(30)은 축볼트(31)의 회전중심축 방향으로 이동되는 것이 특징인 가공범위를 확장시킨 보링바.One side of the saddle 30 is formed integrally with the threaded shaft bolt 31, the shaft bolt 31 is coupled to the boss portion 22 of the dial 20 by screws, the boss portion 22 Is coupled in a state capable of rotating only by the bearing 23, when the dial 2 is rotated, the boss portion 22 is also rotated, whereby the saddle 30, which cannot be rotated in the state fastened to the body, is a shaft bolt 31. Boring bar that extends the processing range, characterized by being moved in the direction of the center of rotation of the axis.
  3. 제1항에 있어서,The method of claim 1,
    상기 새들(30)은 보링헤드체결홈(35)이 시작된 쪽의 반대쪽인 상부에 요홈(32)이 형성되고, 상기 요홈(32)에는 스토퍼핀(16)이 끼워져 있어 새들(30)의 이동거리에 대해 제한해주는 것이 특징인 가공범위를 확장시킨 보링바.The saddle 30 has a groove 32 formed at an upper side opposite to the side where the boring head fastening groove 35 is started, and the stopper pin 16 is inserted into the groove 32 to move the saddle 30. Boring bars that extend the processing range characterized by limiting
  4. 제1항에 있어서,The method of claim 1,
    상기 보링헤드(40)의 생크부(41)에는 생크부(41)의 일부가 경사지도록 면취된 경사면취부(45)가 형성되어 있어 고정볼트(39)에 의해 보링헤드(40)가 고정될 때 생크부(41)가 보링헤드체결홈(35)의 안쪽으로 밀려 들어가도록 하여 생크부(41)의 단면과 보링헤드체결홈(35)의 끝단면이 서로 밀착되도록 하여 보링헤드(40)의 체결력을 높이며, 보링헤드(40)의 체결위치를 일정하게 가져갈 수 있는 것이 특징인 가공범위를 확장시킨 보링바.When the boring head 40 is fixed by the fixing bolt 39, the inclined chamfer 45 is formed in the shank portion 41 of the boring head 40 so that a part of the shank portion 41 is inclined. The shank portion 41 is pushed into the boring head fastening groove 35 so that the end surface of the shank portion 41 and the end surface of the boring head fastening groove 35 are brought into close contact with each other so that the boring head 40 is fastened. To increase the boring bar, extending the processing range, characterized in that it can take a fixed position of the boring head 40 constant.
  5. 제1항에 있어서,The method of claim 1,
    상기 보링헤드(40, 60)는 새들(30)의 전면에 형성된 볼트홀(37)에 체결되는 고정볼트(39)에 의해 고정되되, 상기 볼트홀(37)과 보링헤드체결홈(35)은 새들(30)의 중심축에서 일정량 편심된 상태로 형성되어 있어 보링헤드(40, 60)에 체결되는 절삭팁(44)의 두께를 두껍게 가져갈 수 있어 강도를 높인 것이 특징인 가공범위를 확장시킨 보링바.The boring heads 40 and 60 are fixed by fixing bolts 39 fastened to the bolt holes 37 formed on the front surface of the saddle 30, and the bolt holes 37 and the boring head fastening grooves 35 are Boring bar is formed in a predetermined amount eccentric state in the center axis of the saddle 30 can take the thickness of the cutting tip 44 fastened to the boring head (40, 60) thickened to increase the strength of the boring bar .
  6. 제1항에 있어서,The method of claim 1,
    상기 새들(30)의 전면에는 가공범위를 늘리기 위해 어댑터(50)가 체결될 수 있는 것이 특징인 가공범위를 확장시킨 보링바.Boring bar to extend the processing range is characterized in that the adapter 50 is fastened to the front of the saddle 30 to increase the processing range.
  7. 제4항에 있어서,The method of claim 4, wherein
    상기 어댑터(50)는 새들(30)에 체결볼트(51)에 의해 고정 결합되며, 새들(30)에 형성된 위치안내홈(38)에는 어댑터(50)에 고정 결합되어 있는 위치안내핀(54)이 끼워짐으로써 어댑터(50)의 체결위치를 항상 일정하게 가져갈 수 있는 것이 특징인 가공범위를 확장시킨 보링바.The adapter 50 is fixedly coupled to the saddle 30 by the fastening bolt 51, the position guide groove 38 formed in the saddle 30, the position guide pin 54 is fixedly coupled to the adapter 50 Boring bar which extends the processing range characterized by being able to always take a fixed position of the adapter 50 by this insertion.
  8. 제4항에 있어서,The method of claim 4, wherein
    상기 새들(30)은 일정한 곡률을 가지도록 전면이 형성되고, 상기 어댑터(50)의 결합면은 상기 새들(30)의 곡률과 같은 곡률을 가지도록 형성되어 새들(30)과 어댑터(50)는 같은 곡률을 가지는 면 끼리 결합되어 체결력이 높아지는 것이 특징인 가공범위를 확장시킨 보링바.The saddle 30 has a front surface formed to have a constant curvature, the coupling surface of the adapter 50 is formed to have the same curvature as the curvature of the saddle 30 so that the saddle 30 and the adapter 50 is A boring bar that extends the processing range, characterized by high clamping force due to the coupling between faces having the same curvature.
PCT/KR2016/004637 2015-09-25 2016-05-03 Boring bar having expanded scope of processing WO2017052020A1 (en)

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CN108326332A (en) * 2018-04-10 2018-07-27 浙江甬岭数控刀具有限公司 High-accuracy multifunctional boring cutter

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KR101666363B1 (en) * 2016-03-04 2016-10-14 이헌재 back lash adjusting device for screw and boring bar using it
KR101663444B1 (en) 2016-03-18 2016-10-06 이헌재 The boring bar

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JPH1076410A (en) * 1996-05-02 1998-03-24 Heinz Kaiser Ag Drill head
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JPH1076410A (en) * 1996-05-02 1998-03-24 Heinz Kaiser Ag Drill head
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KR200368612Y1 (en) * 2004-08-26 2004-11-26 허명호 Boring and facing head
JP2007152453A (en) * 2005-12-01 2007-06-21 Kuroda Precision Ind Ltd Boring head
KR20100061086A (en) * 2008-11-28 2010-06-07 주식회사 성산암데코 Facing head

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108326332A (en) * 2018-04-10 2018-07-27 浙江甬岭数控刀具有限公司 High-accuracy multifunctional boring cutter

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