WO2024161497A1 - 加工装置および切屑切断装置 - Google Patents

加工装置および切屑切断装置 Download PDF

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Publication number
WO2024161497A1
WO2024161497A1 PCT/JP2023/003033 JP2023003033W WO2024161497A1 WO 2024161497 A1 WO2024161497 A1 WO 2024161497A1 JP 2023003033 W JP2023003033 W JP 2023003033W WO 2024161497 A1 WO2024161497 A1 WO 2024161497A1
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WO
WIPO (PCT)
Prior art keywords
tool
chip
cutting
cutting device
chips
Prior art date
Application number
PCT/JP2023/003033
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English (en)
French (fr)
Japanese (ja)
Inventor
隆 中村
英二 社本
Original Assignee
国立大学法人東海国立大学機構
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 国立大学法人東海国立大学機構 filed Critical 国立大学法人東海国立大学機構
Priority to PCT/JP2023/003033 priority Critical patent/WO2024161497A1/ja
Priority to JP2024574100A priority patent/JPWO2024161497A1/ja
Publication of WO2024161497A1 publication Critical patent/WO2024161497A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
    • B23B47/34—Arrangements for removing chips out of the holes made; Chip- breaking arrangements attached to the tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
    • B23B49/02—Boring templates or bushings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/02—Twist drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools

Definitions

  • This disclosure relates to a technology for cutting chips of a workpiece discharged from a rotating tool.
  • Patent Document 1 discloses a safety dust collection cover for a drill press, which comprises a main body that forms a working space and a safety cover body that is placed on top of the main body.
  • a fitting opening for fitting with a work fixing device fixed on a work table is provided on the bottom and side of the main body, and a work insertion opening for inserting a work into the working space of the main body and a discharge opening for sucking up cutting chips are provided on the side of the main body.
  • This disclosure has been made in light of these circumstances, and its purpose is to provide a technique for recovering chips generated during hole drilling.
  • One aspect of the present disclosure is a processing device that processes holes in a workpiece, has an opening through which a tool is inserted, and is equipped with a chip cutting device that cuts chips discharged from the tool, and a suction path for sucking up the cut chips.
  • Another aspect of the present disclosure is a chip cutting device that cuts chips discharged from a chip discharge groove of a tool, and includes an opening through which the tool is inserted, one or more cutting blades that cut the chips, and a discharge port for sucking the cut chips to the outside.
  • FIG. 1 is a diagram showing a configuration of a processing apparatus according to an embodiment.
  • FIG. 1 is a diagram showing an example of a tool.
  • FIG. FIG. 13 shows another chip cutting device.
  • FIG. 13 shows another chip cutting device.
  • 1 is a schematic development of a tool edge and a chip-cutting edge;
  • FIG. 13 is a diagram for explaining an appropriate guide position.
  • 13 is another example of a schematic development view of a tool side edge and a chip-cutting edge.
  • FIG. FIG. 13 is a diagram showing chips discharged from a cut hole.
  • FIG. 13 shows the collected chips.
  • FIG. 13 is a diagram showing a modified example of the chip cutting device.
  • FIG. 1 shows the configuration of a processing device 1 according to an embodiment.
  • the processing device 1 is a cutting device that processes holes in a workpiece 8.
  • the processing device 1 includes a spindle housing 5 that rotatably holds a spindle 6, and a tool 10 is held in a tool holder 7 attached to the spindle 6.
  • the tool 10 is a rotating tool, and may be a drill for drilling holes, or a tap for thread cutting.
  • the processing device 1 includes a rotation mechanism 2 that rotates the spindle 6, a movement mechanism 3 that moves the rotation mechanism 2 vertically, and a control device 4 that controls the rotation of the spindle 6 by the rotation mechanism 2 and the vertical movement of the rotation mechanism 2 by the movement mechanism 3.
  • the rotation mechanism 2 has a spindle motor that rotates the spindle 6, and the movement mechanism 3 has a feed motor that moves the spindle housing 5.
  • the rotation mechanism 2 is fixed to the spindle housing 5, and the movement mechanism 3 is connected to the spindle housing 5 to move the spindle housing 5 in the vertical direction.
  • the machining device 1 of the embodiment includes a chip cutting device 40 through which the tool 10 is inserted and which cuts chips discharged from the tool 10.
  • Figure 2 shows an example of a tool 10 that discharges chips.
  • the tool 10 of the embodiment is a drill that drills holes in a workpiece 8, and has a drill body 20 and a shank 21.
  • a portion of the drill body 20 in the axial direction is omitted.
  • Arrow R indicates the rotation direction of the tool 10
  • angle ⁇ indicates the twist angle of the chip discharge groove 23, i.e., the twist angle of the tool side cutting edge.
  • the tool 10 shown in Figure 2 is a right-handed drill.
  • the tool 10 is attached to the processing device 1 by holding the shank 21 in the tool holder 7.
  • the rotational force of the rotation mechanism 2 is transmitted to the shank 21 via the tool holder 7, and the tool 10 rotates around its axis in the direction indicated by the arrow R (clockwise when viewed from above).
  • the drill body 20 includes cutting edges 22 formed at the tip of the drill body 20, and a chip discharge groove 23 that has a rake face 24 on the tip side of the drill body 20 and extends from the rake face 24 toward the rear end side of the drill body 20.
  • Two cutting edges 22 are symmetrically provided at the tip of the drill body 20, and two chip discharge grooves 23 are spirally recessed into the outer circumferential surface of the drill body 20 corresponding to these two cutting edges 22.
  • a side edge is formed between the two chip discharge grooves 23.
  • the chip discharge groove 23 constitutes the rake face 24 of the cutting edges 22 at the tip side, and has the function of discharging chips generated by the cutting edges 22 during cutting to the outside from the cut hole.
  • the clearance surface 25 is provided to reduce the contact area between the tip of the drill body 20 and the workpiece 8 during cutting, thereby suppressing cutting resistance.
  • the cutting edge 22 is formed at the ridge between the clearance surface 25 and the rake face 24.
  • the upward curl is a curl around an axis parallel to the cutting edge 22, and occurs due to friction between the chips and the rake face, etc.
  • the lateral curl is a curl around the normal to the rake face, and occurs mainly due to the difference in speed between the inner and outer diameters of the cutting edge 22.
  • the cutting edge 22 extends from approximately the center position to the outer diameter of the drill, so the diameter of the lateral curl roughly matches the diameter of the drill, and strong lateral curls occur.
  • the chips are generated by curling three-dimensionally from the cutting edge 22, and may collide with the inner wall of the chip discharge groove 23 and be broken up.
  • the chips do not collide with the inner wall and are not broken up by the inner wall. Also, if the workpiece 8 has high ductility, the chips are not easily broken up even when they collide with the inner wall. Furthermore, the chips may not be broken up depending on the feed rate of the tool 10. In this way, when the chips are not broken up into small pieces by the inner wall of the chip discharge groove 23, long chips will be discharged from the cutting hole, which may clog the suction path for sucking up the chips.
  • the chip cutting device 40 has an opening through which the tool 10 is inserted.
  • the chip cutting device 40 has a cylindrical housing 66 and seals the internal space.
  • the chip cutting device 40 has one or more cutting blades in the sealed internal space, and the cutting blades finely cut at least the chips discharged from the chip discharge groove 23 of the rotating tool 10 that have not been sufficiently broken into small pieces by the inner wall of the chip discharge groove 23 (referred to as "long chips").
  • the cutting blades may not cut chips that have already been broken into small pieces by the inner wall of the chip discharge groove 23.
  • the chip cutting device 40 is disposed above the cutting hole, and the cutting blades finely cut the long chips immediately after they are discharged from the cutting hole.
  • the chip cutting device 40 has an outlet 64 for discharging the finely cut chips to the outside, and the outlet 64 is connected to a suction path 16 for sucking the finely cut chips.
  • the chip cutting device 40 is supported by a support device 11 attached to the spindle housing 5 and is not fixed to the workpiece 8.
  • the support device 11 includes a rod-shaped member 14 extending in the axial direction, a support member 15 extending horizontally from the lower end of the rod-shaped member 14 and attached to the chip cutting device 40, and a guide member 13 that guides the movement of the rod-shaped member 14.
  • a portion of the rod-shaped member 14 is inserted into a guide hole 13a provided in the guide member 13, and its movement is restricted.
  • the guide member 13 only allows the rod-shaped member 14 to move in the axial direction and rotate about its axis, and restricts other movements of the rod-shaped member 14.
  • rotational movement of the rod-shaped member 14 about its axis is restricted.
  • the support device 11 further includes a biasing member 12 disposed between the guide member 13 and the support member 15, and in the state shown in FIG. 1, the biasing member 12 applies a force to the support member 15 in a direction pressing it downward.
  • the biasing member 12 is a coil spring that is inserted around the rod-shaped member 14, and by pressing the support member 15 downward with the spring force, a force is applied to the chip cutting device 40 in a direction pressing it against the workpiece 8, and the underside of the chip cutting device 40 is brought into close contact with the surface of the workpiece 8.
  • the chip cutting device 40 may be fixed to the support member 15, which is a separate component, but the chip cutting device 40 and the support member 15 may be formed integrally.
  • the suction path 16 communicating with the discharge port 64 of the chip cutting device 40 is formed inside the support member 15.
  • the suction path 16 may be formed in a member other than the support member 15.
  • a rubber tube extending to a collection container is attached to the right side of the suction path 16.
  • a suction device (not shown) is connected to the rubber tube, and during cutting, the suction device sucks up the chips that have been finely divided or cut (crushed) before passing through the chip cutting device 40, and the sucked chips are collected in a collection container arranged at the end of the rubber tube.
  • the suction device is preferably connected to the rubber tube or the suction path 16 near the discharge port 64. In this way, according to the processing device 1, hole processing can be performed in a good environment without scattering chips around the processing area.
  • the chip cutting device 40 is supported by the support device 11, but the support rigidity is not very high. However, because the tool 10 is inserted into the opening in the center of the chip cutting device 40, the chip cutting device 40 is guided by the tool 10 and positioned in a predetermined position. In other words, the chip cutting device 40 is automatically guided by the rotating tool 10 so that its central axis coincides with the center of rotation of the tool 10.
  • the chip cutting device 40's position in two horizontal directions and its rotational position around those directions are determined by the tool 10.
  • the tool 10 guides the position of the chip cutting device 40, but since the guiding relationship is relative, below, the parts and structures of the chip cutting device 40 are referred to as "guide plates,” “guide holes,” “guide surfaces,” etc. that guide the tool 10.
  • FIG. 3(a) shows the top surface of the chip cutting device 40
  • FIG. 3(b) shows a side surface of the chip cutting device 40.
  • the chip cutting device 40 has one or more cutting blades 60 that cut long chips discharged from the tool 10.
  • the chip cutting device 40 has four cutting blades 60 that are equally spaced apart in the circumferential direction.
  • the chip cutting device 40 includes a first guide plate 50 on the upper side, a second guide plate 54 on the lower side, and four ridges 58 protruding from the inner circumferential surface of a cylindrical housing 66 toward the central axis. Adjacent ridges 58 are arranged at 90 degree intervals in the circumferential direction. When the ridges 58 are viewed from the central axis, the inner circumferential surface of the ridges 58 (an arc surface equidistant from the central axis) forms a guide surface 62 that guides the rotating tool 10, and the edge extending vertically at the rear end of the inner circumferential surface viewed counterclockwise forms a cutting blade 60.
  • the twist angle of the cutting blade 60 is different from the twist angle ⁇ of the side blade of the tool 10, and the difference in the twist angles corresponds to the opening angle of scissors.
  • the cutting blade 60 is an edge formed in the vertical direction, and therefore the twist angle is zero.
  • the first guide plate 50 has a guide hole 52 for inserting the tool 10
  • the second guide plate 54 has a guide hole 56 for inserting the tool 10.
  • the first guide plate 50 is arranged on the upper side (spindle side) in the vertical direction
  • the second guide plate 54 is arranged on the lower side (workpiece side) in the vertical direction.
  • the guide holes 52 and 56 are formed coaxially and with the same diameter, and constitute an opening through which the tool 10 is inserted.
  • the diameter of the guide hole is substantially equal to the diameter of the tool 10, and is actually slightly larger than the diameter of the tool 10 to realize smooth rotation of the tool 10.
  • the difference between the guide hole diameter and the tool diameter may be, for example, within 1 mm.
  • the chip cutting device 40 is guided by the inner surface of the guide hole (guide surface in the guide hole) and the multiple guide surfaces 62 so that the centers of the multiple cutting blades 60 coincide with the rotation axis of the tool 10. Therefore, the side blade of the tool 10 does not bite into the cutting blade 60, and the tool 10 can rotate stably within the chip cutting device 40.
  • the distance between the cutting blade 60 and the side blade of the tool 10 at their closest point is preferably smaller than the thickness of the chips, so that the cutting blade 60 can efficiently cut long chips discharged from the tool 10.
  • the housing 66 is formed with an outlet 64 for discharging fine chips that have been cut or separated, and an external suction device is connected to the outlet 64 so that the fine chips can be sucked in through the suction path 16. This allows the processing device 1 to discharge only the fine chips to the outside from the outlet 64, preventing clogging of the suction path 16.
  • the chip cutting device 40 has two guide plates, one above and one below, that guide the position of the chip cutting device 40 relative to the rotating tool 10, preventing the side blade of the tool 10 from biting into the cutting blade 60.
  • the height of the chip cutting device can be reduced compared to when there are two guide plates, and the length of the rotary tool can be shortened accordingly.
  • the chips discharged from the cutting hole can be cut more quickly, but the conditions for proper guiding must be met. Below, we explain the conditions under which the side blade of the tool 10 does not bite into the cutting blade when there is only one guide plate.
  • Figure 4(a) shows the top surface of another chip cutting device 44
  • Figure 4(b) shows a side surface of the chip cutting device 44.
  • the chip cutting device 44 has a configuration in which the second guide plate 54, which is the lower plate, has been removed from the chip cutting device 40 shown in Figure 3.
  • the guide hole 52 is guided by the tool 10, so the radial position of the cutting blade 60 is determined at a position with an appropriate small gap with respect to the side blade of the tool 10.
  • the cutting blade 60 and the guide surface 62 connected to the cutting blade 60 in the circumferential direction must act as a guide for the side blade of the tool 10 intermittently at multiple rotational positions to prevent the side blade of the tool 10 from biting into the cutting blade 60.
  • FIG. 5(a) is a perspective view of another chip cutting device 46 seen from above
  • FIG. 5(b) is a perspective view of the chip cutting device 46 seen from below.
  • the chip cutting device 46 has one or more cutting blades 82 that cut long chips discharged from the tool 10.
  • the chip cutting device 46 has three cutting blades 82 that are equally spaced apart in the circumferential direction.
  • the chip cutting device 46 comprises an upper first guide plate 50 and three protrusions 88 that protrude from the inner circumferential surface of the cylindrical housing 66 toward the central axis. Adjacent protrusions 88 are arranged at angular intervals of 120 degrees in the circumferential direction. When the protrusions 88 are viewed from the central axis, the inner circumferential surface of the protrusions 88 (an arc surface equidistant from the central axis) forms a guide surface 84 that guides the rotating tool 10, and the edge extending diagonally at the rear end of the inner circumferential surface viewed counterclockwise forms a cutting blade 82.
  • the twist angle ⁇ of the cutting blade 82 is different from the twist angle ⁇ of the side blade of the tool 10, and the direction of the twist angle ⁇ is opposite to the direction of the twist angle ⁇ .
  • the first guide plate 50 is positioned vertically on the upper side (spindle side) and has a guide hole 52 for inserting the tool 10.
  • the guide hole 52 forms an opening through which the tool 10 is inserted, and the diameter of the guide hole 52 is substantially equal to the diameter of the tool 10, and is actually slightly larger than the diameter of the tool 10.
  • the difference between the guide hole diameter and the tool diameter may be within 1 mm, for example.
  • the distance between the cutting blade 82 and the side blade of the tool 10 at their closest point is preferably smaller than the thickness of the chips, so that the cutting blade 82 can efficiently cut long chips discharged from the tool 10.
  • the housing 66 is formed with an outlet 64 for discharging fine chips that have been cut or separated, and an external suction device is connected to the outlet 64 so that the fine chips can be sucked in through the suction path 16. This allows the processing device 1 to discharge only the fine chips to the outside from the outlet 64, preventing clogging of the suction path 16.
  • Fig. 6 is a schematic development of the tool-side blade and the chip-cutting blade.
  • the horizontal axis indicates the circumferential rotation position
  • the vertical axis indicates the height position of the cutting blade 82.
  • the axial height of the cutting blade 82 is L.
  • the tool-side blade has a helix angle ⁇ (see Fig. 2)
  • the cutting blade 82 formed in the chip-cutting device 46 has a reverse helix angle ⁇ opposite to the helix angle ⁇ .
  • the guide surface 84 connected to the cutting blade 82 is an arc surface (angle ⁇ ) of substantially the same diameter as the cutting blade 82, like the guide surface 62 shown in FIG. 4. Therefore, the guide surface 84 has no clearance angle, and guiding is performed over the entire area where the width (hatched area) of each guide surface 84 intersects with the tool side blade.
  • FIG. 6 there are four guide areas surrounded by dashed ellipses.
  • the tool side blade is likely to bite into the cutting blade 82 at the moment when the lowest point of the cutting blade 82 (the point closest to the workpiece within the axial range of the cutting blade) begins to intersect with the tool side blade.
  • the tool side blade is most likely to bite into the cutting blade 82 at the moment of the rotational position ⁇ of the horizontal axis.
  • the tool side blade is formed along the chip discharge groove 23 (see Figure 2), so it is twisted in a direction that lags behind the rotation direction from the tip of the tool to the base.
  • the tool side blade is formed with an upward tilt to the right (right-handed twist), and moves (rotates) to the left relative to the cutting blade 82 during machining.
  • the cutting blade 82 has an opposite twist (upward tilt to the left, left-handed twist).
  • guiding appropriately means guiding the tool side blade in the left and right vicinity of the tool side blade so that the tool side blade does not bite into the cutting blade 82.
  • the closest guide point on the left side of the intersection start position is "a”
  • the closest guide point on the right side of the intersection start position is "b”
  • guide points a and b are each less than 90 degrees from the intersection start position.
  • the height of guide point a is l a
  • the angle from the intersection start position is ⁇ a
  • the height of guide point b is l b
  • the angle from the intersection start position is ⁇ b .
  • FIG. 7 is a diagram for explaining an appropriate guide position.
  • the tool side blade 80 is shown rotating clockwise and approaching the cutting blade 82 at a rotational position of ⁇ .
  • a guide surface 84 is connected to the cutting blade 82.
  • guide point a is in the range of ⁇ /2 to ⁇
  • guide point b is in the range of ⁇ to 3 ⁇ /2
  • the tool cannot move to the left (i.e., the cutting blade 82 cannot move to the right). Therefore, the tool side blade 80 does not bite into the cutting blade 82, and the tool inserted in the chip cutting device can continue to rotate stably.
  • the diameter of the guide hole is D
  • the number of teeth of the side blade of the tool is n
  • the twist angle of the side blade of the tool is ⁇
  • the number of teeth of the cutting blade in the chip cutting device is m
  • the axial height is L
  • the reverse twist angle (the direction opposite to the twist angle of the tool is positive)
  • ⁇ the angle of the guide surface
  • Figure 8 shows another example of an exploded view of the tool side blade and the chip cutting blade. Note that the chip cutting device shown in Figure 8 has two chip cutting blades spaced equally apart in the circumferential direction, which is different from the chip cutting device shown in Figure 6.
  • the chip cutting device cuts long chips in an enclosed space immediately after they are discharged from the cutting hole, making it possible to break all chips into small pieces, eliminating the need to cover a large area around the cutting hole (i.e., making the enclosed space smaller), and increasing bulk density. Furthermore, by breaking all chips into small pieces, there is no need for a large suction force from the suction device, and the diameter of the suction path can be reduced, making it possible to miniaturize the suction device.
  • Figure 9 shows an example of chips (aluminum) generated during drilling. Because aluminum is highly ductile, the chips are not easily broken up when they collide with the inner wall of the chip discharge groove 23, and long chips that extend in a spiral shape tend to be generated.
  • Figure 10 shows chips collected using the chip cutting device of the embodiment.
  • the processing device 1 drilled holes in an aluminum alloy, and the chips cut into small pieces using the chip cutting device were sucked up by the suction device and collected in a collection container.
  • many long chips like those shown in Figure 9 were generated, which shows that by using the chip cutting device, the chips are cut into very small pieces and the bulk density is increased.
  • the chip cutting device 40 is integrally formed, but may be formed by combining a plurality of parts.
  • Fig. 11 shows a modified example of the chip cutting device 44.
  • the chip cutting device 44 is composed of a housing part 90 and a cutting part 92, and Fig. 11 shows cross sections of the housing part 90 and the cutting part 92. Note that the discharge port 64 is omitted from the illustration.
  • the housing part 90 may be fixed to the support member 15 and has a guide hole 52.
  • the cutting part 92 has four ridges 58 arranged at equal intervals in the circumferential direction.
  • the inner peripheral surface (an arc surface equidistant from the central axis) of the ridges 58 constitutes a guide surface 62 that guides the rotating tool 10, and the edge extending vertically at the rear end of the inner peripheral surface viewed around the left constitutes the cutting blade 60.
  • the chip cutting device 44 is formed by fixing the cutting part 92 to the housing part 90.
  • the chip cutting device 44 By forming the chip cutting device 44 from two parts, there is an advantage that, for example, when the cutting blade 60 is broken, it is not necessary to replace the entire chip cutting device 44, but only the cutting part 92.
  • the housing part 90 only needs to be provided with a guide plate, and the cutting part 92 does not need to be provided with a guide plate, so there is also an advantage that the cutting part 92 can be easily manufactured.
  • One aspect of the present disclosure is a processing device that processes holes in a workpiece, has an opening through which a tool is inserted, and is equipped with a chip cutting device that cuts chips discharged from the tool, and a suction path for sucking up the cut chips.
  • the chip cutting device cuts the chips immediately after they are discharged from the cutting hole, preventing the chips from becoming entangled in the tool, and the suction device can suck up the fine cut chips through the suction path.
  • the chip cutting device preferably has a discharge port for discharging the cut chips into the suction path.
  • the processing device preferably includes a support device for supporting the chip cutting device, and the support device preferably has a biasing member for applying a force to the chip cutting device in a direction pressing it against the workpiece.
  • the chip cutting device may have one or more cutting blades.
  • the twist angle of the cutting blades is preferably different from the twist angle of the side blades of the tool, and the direction of the twist angle of the cutting blades may be opposite to the direction of the twist angle of the side blades of the tool.
  • the distance between the cutting blade and the side blade of the tool is preferably smaller than the thickness of the chip.
  • the chip cutting device may have a guide surface that guides the rotation of the tool to prevent the side blade of the tool from biting into the cutting blade.
  • Another aspect of the present disclosure is a chip cutting device that cuts chips discharged from a chip discharge groove of a tool, and includes an opening through which the tool is inserted, one or more cutting blades that cut the chips, and a discharge port for sucking the cut chips to the outside.
  • the chip cutting device cuts the chips immediately after they are discharged from the cutting hole, preventing the chips from becoming entangled in the tool, and the suction device can suck up the fine chips that have been cut through the suction path.
  • the diameter of the opening is preferably slightly larger than the diameter of the tool, and the difference in diameter may be within 1 mm, for example.
  • This disclosure can be used in cutting devices that use rotary tools such as drills.
  • Scraping surface 25: clearance surface, 30: chip guide, 40, 44, 46: chip cutting device, 50: first guide plate, 52: guide hole, 54: second guide plate, 56: guide hole, 58: protrusion, 60: cutting blade, 62: guide surface, 64: discharge port, 66: housing, 80: tool side blade, 82: cutting blade, 84: guide surface, 86: discharge port, 88: protrusion, 90: housing part, 92: cutting part.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
PCT/JP2023/003033 2023-01-31 2023-01-31 加工装置および切屑切断装置 WO2024161497A1 (ja)

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PCT/JP2023/003033 WO2024161497A1 (ja) 2023-01-31 2023-01-31 加工装置および切屑切断装置
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JPS58196911A (ja) * 1982-04-29 1983-11-16 エバレツト・ダグラス・ホ−ゲン 環状刃物用チツプブレ−カ
JPS60146604U (ja) * 1984-03-09 1985-09-28 日本電気株式会社 Ｎｃ旋盤用切屑巻付防止アダプタ−
JPH02212007A (ja) * 1989-02-13 1990-08-23 Suzuki Motor Co Ltd 孔加工機
JPH0890322A (ja) * 1994-09-21 1996-04-09 Mitsubishi Heavy Ind Ltd 穴明け用治具ブッシュ
JPH08174321A (ja) * 1994-12-27 1996-07-09 Eiichi Kosaka 切粉切断用ブッシュ
JP2001518019A (ja) * 1995-11-30 2001-10-09 ザ・ボーイング・カンパニー チップ・ブレーカ・ドリル・ブッシュ・アセンブリ
JP2001079705A (ja) * 1999-09-08 2001-03-27 Honda Motor Co Ltd 切削加工装置
JP2002126921A (ja) * 2000-10-20 2002-05-08 Kawasaki Heavy Ind Ltd 切削工具の切屑巻付防止装置およびスリーブ装置
JP2008168415A (ja) * 2007-01-15 2008-07-24 Nikkei Panel System Kk ボール盤の安全集塵カバー
JP2020163519A (ja) * 2019-03-29 2020-10-08 アイシン・エィ・ダブリュ株式会社 穴加工治具

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