WO2005002771A1 - タップ立て用切り屑分断工具、およびめねじ加工方法 - Google Patents
タップ立て用切り屑分断工具、およびめねじ加工方法 Download PDFInfo
- Publication number
- WO2005002771A1 WO2005002771A1 PCT/JP2003/011225 JP0311225W WO2005002771A1 WO 2005002771 A1 WO2005002771 A1 WO 2005002771A1 JP 0311225 W JP0311225 W JP 0311225W WO 2005002771 A1 WO2005002771 A1 WO 2005002771A1
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- WIPO (PCT)
- Prior art keywords
- chip
- cutting
- groove
- tool
- pilot hole
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/08—Drills combined with tool parts or tools for performing additional working
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G5/00—Thread-cutting tools; Die-heads
- B23G5/02—Thread-cutting tools; Die-heads without means for adjustment
- B23G5/06—Taps
- B23G5/062—Taps with a guiding means part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G5/00—Thread-cutting tools; Die-heads
- B23G5/20—Thread-cutting tools; Die-heads combined with other tools, e.g. drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2200/00—Details of threading tools
- B23G2200/14—Multifunctional threading tools
- B23G2200/143—Tools comprising means for drilling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2200/00—Details of threading tools
- B23G2200/24—Chip breakers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2240/00—Details of equipment for threading other than threading tools, details of the threading process
- B23G2240/08—Evacuation of chips or fines
Definitions
- the present invention relates to an improvement in an internal thread processing method for cutting an internal thread by screwing a cutting tap into a pilot hole.
- a female thread forming method of cutting a female thread by screwing a cutting tap into a prepared hole is widely performed in various fields.However, using such a cutting tap, for example, SS400 (rolling for general structural use) If tapping is performed on a highly malleable material such as steel or aluminum, the chips are difficult to cut and are likely to be long, and as a result, as shown in Fig. 10, they may become entangled with the tap and cannot be machined. For this reason, it was necessary for workers to constantly monitor, and there were problems such as difficulty in complete automation. In addition, there are various problems, such as the possibility that the tap may be broken due to the infiltration of the chips, and that it is difficult to perform processing such as cleaning of the chips. On the other hand, when a plurality of notches corresponding to the lands of the cutting tap are provided in the outer periphery of the prepared hole as described in Document 1, for example, the chips are finely divided by the notches, so The problem goes away.
- SS400 rolling for general structural use
- Patent Document 1 Japanese Patent Application Laid-Open No. 52-26698
- the female screw itself is largely divided by a relatively large notch corresponding to a land of a cutting tap. Therefore, there is a possibility that the strength of the female thread is reduced and a predetermined screw fastening strength cannot be obtained.
- a material having a high malleability it is difficult to apply a strong fastening, and it is substantially difficult to apply the technology of Reference 1.
- the present invention has been made in view of the above circumstances, and its purpose is to remove chips without impairing the strength of the internal thread even when tapping the internal thread on a highly malleable material. The purpose is to make sure that it can be divided.
- a first invention is to provide a tapping chip for preventing a chip from being discharged continuously for a long time when a cutting tap is screwed into a prepared hole to cut an internal thread.
- a cutting tool wherein: (a) a main body portion inserted into the pilot hole prior to the cutting of the female screw by the cutting tap; and (b) the pilot hole provided integrally with the main body portion. And a groove machining blade for forming a chip dividing groove on the inner peripheral surface of the groove.
- a second invention is the tapping chip cutting tool according to the first invention, wherein the grooving blade is configured to cut a notch-shaped chip dividing groove having a substantially triangular cross section. Is characterized by being substantially equal to the diameter of the root of the female screw.
- a third invention is the tapping chip cutting tool according to the first invention or the first invention, wherein the main body has a cylindrical outer peripheral surface having a diameter substantially equal to the inner diameter of the pilot hole. It is characterized in that it is inserted into the pilot hole while being positioned substantially concentrically with the pilot hole by the outer peripheral surface.
- a fourth invention is the chip breaking tool for tapping according to any one of the first invention to the third invention, wherein a tip of the main body portion has a large diameter portion substantially equal to a diameter of the pilot hole and a tip side. It is characterized in that a taper-shaped insertion guide is provided, the diameter of which becomes smaller as it goes toward.
- a fifth invention is the tapping chip cutting tool according to the fourth invention, wherein: (a) the groove processing blade forms the chip separation groove by cutting; and (b) the insertion guide. A portion corresponding to the grooving blade is partially cut away, and a chip pocket for receiving chips discharged by the grooving blade and discharging the chip forward is provided.
- the main body is provided with a shank integrally in the axial direction, and It is characterized by being used by being attached to.
- the main body having the grooving blade is integrated with a tip portion of the cutting nip. It is characterized by being provided in a specific way.
- the main body having the grooving blade is a groove for a drill for cutting the pilot hole. And a shank.
- the body portion having the grooving blade includes a drill of a drill with a drill and the drill. And is provided integrally between them.
- a tenth invention is a female thread processing method for cutting a female screw by screwing a cutting tap into a pilot hole, wherein the inner peripheral surface of the pilot hole is cut prior to the cutting of the female screw by the cutting tap.
- the method further comprises a groove forming step of forming a chip breaking portion so as to intersect with the thread groove of the internal thread.
- An eleventh invention is characterized in that, in the female screw machining method of the tenth invention, the chip dividing groove is provided such that a diameter of a groove bottom is substantially equal to a diameter of a valley of the female screw. .
- the chip breaking tool for tapping by being inserted into the prepared hole prior to tapping (cutting of the internal thread) by the cutting tap, the inside of the prepared hole is formed. Since the chip dividing grooves are formed on the peripheral surface, the chips are reliably separated by the chip dividing grooves so that the chips can be discharged well, even when setting up a highly extensible material. . As a result, it is possible to prevent a large number of long and continuous chips from being entangled with the tap, and it is not necessary to monitor the tapping operation, and it is possible to achieve full automation (unmanned operation). In addition, breakage of the cutting tip caused by chip intrusion is suppressed, and processing such as chip cleaning is facilitated.
- the female thread obtained by tapping is also divided by the chip dividing groove.
- a notch-shaped chip dividing groove having a substantially triangular cross section may be formed with a minimum necessary size, such as by forming a diameter substantially equal to the diameter of a female thread valley.
- the strength of the female screw is higher than when a large notch corresponding to the land is provided, and a predetermined screw fastening strength can be ensured even with a highly extensible material.
- the main body is provided with a cylindrical outer peripheral surface having a diameter substantially equal to the inner diameter of the pilot hole, and is inserted into the pilot hole while being positioned substantially concentrically with the pilot hole by the cylindrical outer peripheral surface. Since the chip dividing groove is machined, the chip dividing groove can be added with high accuracy, and the chip dividing groove can be easily machined even with one groove machining blade.
- the insertion guide having a teno or shape having a smaller diameter as it goes from the large-diameter portion substantially equal to the diameter of the pilot hole toward the distal end is provided at the distal end of the main body, the tool can be inserted into the pilot hole. It can be easily and reliably inserted into the swarf to process the chip dividing groove.
- the tip pocket is provided by partially cutting out a portion of the insertion guide corresponding to the grooving blade, the chips cut by the grooving blade are forward from the tip pocket. Good discharge is achieved, and chips are prevented from being inserted between the insertion guide and the pilot hole, thereby preventing an increase in machining load and flaws on the inner peripheral surface of the pilot hole.
- the shaving chip cutting tool according to the sixth aspect of the present invention is provided with a shank integrally in the axial direction and used alone by being attached to the machine tool, if the pilot hole diameter is the same, the pitch etc. Can be used in common for setting up multiple types of internal threads, and wear and damage to the tool ⁇ compared to the case where the cutting tap and the drill are provided integrally as in the seventh to ninth inventions It is possible to use the tool until the tool life is reached, and each tool can be used effectively.
- the chip cutting tool is provided integrally with the tip of the cutting tap. Therefore, following machining of the chip dividing groove by the chip dividing tool, tapping by the cutting tap can be continuously and efficiently performed without changing tools.
- the phase of the groove cutting blade may be adjusted to the chip cutting groove existing in the thread.
- the chip cutting tool is provided integrally with the drill, the machining of the chip cutting groove by the chip cutting tool without changing the tool follows the drilling of the prepared hole by the drill. It can be performed continuously and efficiently. Further, as in the sixth invention, if the pilot hole diameter is the same, it can be commonly used for setting up a plurality of types of female threads having different pitches and the like.
- the chip cutting tool is provided integrally with the cutting tap with a drill, preparation of a pre-drilled hole with a drill, processing of the chip cutting groove with the chip cutting tool, and tapping with the cutting tap are performed. In addition, it can be performed continuously and efficiently without changing tools.
- the phase of the groove processing blade should be adjusted to the chip cutting groove existing in the internal thread.
- the tapping is performed on a highly malleable material.
- the chips are reliably separated by the chip dividing grooves and can be discharged satisfactorily, and the same effect as the first invention can be obtained.
- the diameter of the groove bottom of the chip dividing groove is substantially equal to the diameter of the valley of the internal thread, and the chip dividing groove is provided at substantially the same depth as the thread groove of the internal thread.
- the strength of the internal thread is higher, and even if the material is highly extensible, the specified screw fastening strength can be secured. .
- FIGS. 1A and 1B are views showing a chip cutting tool for tapping according to an embodiment of the present invention, wherein FIG. 1A is a front view seen from a direction perpendicular to an axis, and FIG. It is.
- FIG. 2 is a cross-sectional view when machining a chip cutting groove in a prepared hole using the chip cutting tool of FIG.
- FIG. 3 is a view showing a pilot hole provided with a chip dividing groove as shown in FIG. 2, (a) is a plan view, and (b) is a BB cross-sectional view in (a).
- Fig. 4 is a view showing the state in which the internal thread is cut in the pilot hole of Fig. 3 by using an upright.
- A is a plan view
- (b) is a BB sectional view in (a)). .
- FIG. 5 is a view showing another embodiment of the present invention, in which a chip cutting tool is provided integrally with a cutting tap.
- FIG. 6 is a view showing still another embodiment of the present invention, in which a chip cutting tool is provided integrally with a drill.
- FIG. 7 is a view showing still another embodiment of the present invention, in which a chip cutting tool is provided integrally with a cutting tap and a drill.
- FIG. 8 is a view showing still another embodiment of the present invention, and corresponds to FIG. 1 in a case where a groove machining blade twisted around an axis is provided.
- FIG. 9 is a cross-sectional view illustrating still some other embodiments of the present invention.
- FIG. 10 is a view showing a state in which a large number of long and continuous chips that are not divided at the time of tapping are entangled in a cutting tap.
- the chip cutting groove of the present invention is formed by inserting a chip cutting tool parallel to the axis of the prepared hole without rotating the chip cutting tool around the axis, thereby forming a straight line formed parallel to the axis of the prepared hole.
- It may be a groove, but it may be provided so as to intersect with the thread groove of the internal thread formed on the inner peripheral surface of the prepared hole as in the tenth invention, and the chip cutting tool is turned around the axis. Alternatively, it may be inserted into the pilot hole while being rotated to form a spiral chip dividing groove.
- the grooving blade may be provided on the main body in a straight line parallel to the axis.
- the grooving blade may be provided by twisting around the axis.
- the chip cutting tool may be one that has a cutting edge at the tip of the grooving blade and cuts the chip dividing groove.However, the grooving blade cuts into the inner peripheral surface of the pilot hole, causing plastic deformation. It is also possible to form a chip dividing groove by forming the cutting chips.
- the grooving blade can be provided integrally with the main body by wire cutting, wire electric discharge machining, etc. by cutting, but can be configured separately and fixed to the main body by screws, welding, shrink fitting, etc. It may be fixed integrally to the part.
- the number of grooving blades is three or more, for example, equiangularly spaced apart from each other around the axis. (Slightly smaller than the hole), the chip cutting groove can be machined with sufficient machining accuracy by providing only one or two groove machining blades.
- various modes are possible such that the cross-sectional shape of the main body is a polygon such as a triangle or a quadrangle, and the apex thereof can be used as a groove machining blade.
- chips when tapping are more easily divided and discharged easily.Therefore, it is necessary to provide multiple grooving blades to form multiple chip cutting grooves simultaneously. desirable.
- a notch-shaped chip dividing groove having a substantially triangular cross-section and a substantially triangular cross-section is formed in the grooving blade, but a groove such as a U-shaped cross section or an I-shaped cross section can be used.
- the cross-sectional shapes of the processing blade and the chip dividing groove can be set as appropriate. Note that the chip cutting groove does not need to be able to pass through the land of the cutting tap as in the cited document 1, but may be provided with a width sufficiently smaller than the land.
- the diameter of the grooving blade is substantially equal to the diameter of the valley of the female thread, and is substantially equal to the thread groove of the female thread, and a chip dividing groove is formed at the groove depth.
- a chip cutting groove deeper than the thread groove of the internal thread may be machined as long as the screw strength is obtained. Even when the chip dividing groove is shallower than the female screw thread groove, the chips are surely divided and discharged within the range of the chip dividing groove, so that the chip Entanglement is suppressed.
- the input guide of the fourth invention and the tip pocket of the fifth invention are provided as required. In other embodiments of the present invention, the insertion guide and the chip pocket may not be provided.
- the chip cutting tool can be provided integrally with a common tool material with the drill ⁇ cutting pad and the drilling cutting cup, but it is configured separately. It may be integrally joined by welding or shrink fitting.
- Various taps such as a straight groove tap and a spiral tap can be adopted as the cutting tap, and the same applies to a drill.
- the chip cutting tools according to the first to ninth inventions are preferably used in the female thread machining method according to the tenth invention and the eleventh invention, but other methods such as laser machining and electric discharge machining are used. It is also possible to process a chip dividing groove by a groove processing technique.
- Example 1 After setting up the chip dividing groove, even if the screw groove is cut so that the inner peripheral surface of the prepared hole forms the female screw peak as it is, the cutting process is performed up to the female screw peak. What you do. Example 1
- FIG. 1 is a diagram showing a chip cutting tool 10 for tapping according to one embodiment of the present invention, wherein (a) is a front view as viewed from a direction perpendicular to an axis, and (b) is a front end side.
- FIG. 2 the chip cutting tool 10 is inserted into a prepared hole 22 provided in advance in the work 20 from the front end side, so that the chip cutting groove 30 shown in FIG. This is for cutting the inner peripheral surface of the pilot hole 22.
- the blade portion 14 has a cylindrical outer peripheral surface 18 having a diameter slightly smaller than the inner diameter of the pilot hole 22, and is positioned substantially concentrically with the pilot hole 22 by the cylindrical outer peripheral surface 18. In this state, it is inserted into the pilot hole 22.
- the cylindrical part of the blade part 14 with a diameter slightly smaller than the prepared hole 22 corresponds to the main body part.
- Each of the three grooving blades 16 is provided integrally with the blade portion 16 by, for example, wire-cut electric discharge machining so that the cross-section of each of the grooving blades 16 is substantially triangular and the vertices protrude to the outer peripheral side. It has a length in the axial direction longer than the thickness of the work 20, that is, the length of the internal thread 32 to be machined (see FIG. 4), and is formed linearly in parallel with the axis. The tip functions as a cutting edge.
- the diameter of the apex of the grooved blade 16 protruding to the outer peripheral side is almost equal to the diameter of the valley of the female screw 32, and the inner peripheral surface of the prepared hole 22 has the thread groove 3 4 of the female screw 32.
- FIG. 3 shows the state before tapping the female thread 32, but the position of the bottom of the thread groove 34 of the female thread 32 is shown by a dashed line for comparison with the chip dividing groove 30.
- Things. 3A and 4A are plan views, respectively, and FIG. 3B is a cross-sectional view taken along line BB in FIG.
- the chip cutting tool 10 is also provided with an insertion guide 24 at its tip.
- the insertion guide 24 has the same diameter as that of the cylindrical outer peripheral surface 18 and is substantially the same as the diameter of the pilot hole 22, and has a shape that becomes smaller in diameter from the large diameter portion toward the distal end. It is inserted into the pilot hole 22 by its tapered surface 26 so as to be substantially concentric with the pilot hole 22.
- a portion of the above-mentioned insertion guide 24 that coincides with the groove machining blade 16 Is provided with a chip pocket 28 that partially receives the chipping force, the chip that is cut by the grooving blade 16 and discharges the chip forward.
- the drill is driven to rotate around the axis by a three-axis machine (not shown) or the like. While lowering it to cut the pilot hole 2 2. This step is a pre-drilling step.
- the work 20 is made of a highly extensible material such as SS400 or aluminum, and the chip cutting groove 30 is relatively easily cut simply by pushing the chip cutting tool 10 in the axial direction.
- a die having a cutting edge corresponding to the grooving blade 16 can be used if necessary.
- the insertion guide 24 has a chip pocket 18 corresponding to the grooved blade 16, chips cut by the grooved blade 16 are forwardly moved from the chip pocket 8 (see the embodiment). In this case, swarf is ejected downward, and chips are inserted between the insertion guide 24 and the pilot hole 22 to increase the processing load and to scratch the inner peripheral surface of the pilot hole 22. Is prevented.
- the tip of the grooving blade 16 protrudes to the opposite side (downward) of the pilot hole 22 and the cutting of the chip dividing groove 30 is completed, the descent of the chip cutting tool 10 is stopped.
- the length of the blade portion 14 of the chip cutting tool 10, that is, the length of the groove processing blade 16 is larger than the plate thickness of the work 0. Therefore, the rear end of the grooving blade 16 protrudes above the pilot hole 22 and can be easily pulled out.
- the chip 20 Prior to), the chip 20 is pushed into the pilot hole 22 to cut the chip dividing groove 30 in the inner peripheral surface of the pilot hole 22 and the workpiece 20 is extensible. Even if the material is high, the chips are reliably separated and satisfactorily discharged by the chip dividing grooves 30. As a result, for example, as shown in Fig. 10, a large number of long and continuous chips can be prevented from becoming entangled in the tap, and the need for monitoring the work of setting up a shower can be eliminated, thus enabling complete automation (unmanned operation). . In addition, breakage of the cutting tap due to chip intrusion is suppressed, and processing such as chip cleaning becomes easy.
- the female thread 3 obtained by tapping is also divided by the chip dividing groove 30.
- the chip dividing groove 30 only needs to be able to separate the chips when tapping, and in this embodiment, Since the notch-shaped chip dividing groove 30 having a substantially triangular cross section is formed with substantially the same groove depth as the thread groove 34 of the internal thread 32, it corresponds to the land of the nip as in Patent Document 1.
- the strength of the female screw 32 is higher than in the case where a large notch is provided, so that a predetermined screw fastening strength can be ensured even with a highly extensible material.
- the blade portion 14 has a cylindrical outer peripheral surface 18 having a diameter substantially equal to the inner diameter of the prepared hole 22, and the lower portion is positioned substantially concentrically with the prepared hole 22 by the cylindrical outer peripheral surface 18. Since it is inserted into the hole 22, the chip dividing groove 30 can be easily processed with high accuracy.
- the chip cutting tool 10 is easily and securely inserted into the prepared hole 22, and the chip is inserted.
- the dividing groove 30 can be cut.
- the insertion guide 14 is provided with the chip pocket 28 corresponding to the groove processing blade 16, chips cut by the groove processing blade 16 are favorably forward from the chip socket 28.
- the cutting load is increased between the input guide 24 and the pilot hole 22 to increase the machining load and to damage the inner peripheral surface of the pilot hole 22. Is prevented.
- the chip cutting tool 10 of the present embodiment is provided with the shank 12 integrally in the axial direction, and is used by being independently attached to the machine tool, so that the diameter of the prepared hole 22 is the same.
- FIG. 5 shows a cutting tap 4 for tapping the female screw 32.
- the chip cutting tool 42 is coaxially and integrally provided at the tip of 0.
- the chip cutting tool 42 consists of the three groove processing blades 16, the cylindrical outer peripheral surface 18 and the insertion guide. 24, which is substantially the same as the blade section 14, and has a smaller diameter than the pilot hole 22 and a longer connection length than the length of the internal thread 32 (the plate thickness of the work 20).
- the cutting tap 40 is provided integrally with the cutting tap 40 via a part 44.
- a chip cutting groove 30 is formed on the inner peripheral surface of the prepared hole 22 by the chip cutting tool 42 before the tapping by the cutting tap 40, so that the tapping is performed.
- the chips are surely divided and can be satisfactorily discharged, so that the same effect as in the above embodiment can be obtained.
- the chip cutting tool 42 is provided integrally with the tip of the cutting tap 40, the chip cutting tool 42 is used to cut the chip cutting groove 30 (grooving process). Therefore, tapping with the cutting tap 40 (tapping step) can be performed continuously and efficiently without changing tools.
- FIG. 6 shows a composite tool in which a chip cutting tool 52 is coaxially and integrally provided on a drill 50 for cutting the prepared hole 22.
- the chip cutting tool 52 includes the three grooves. Equipped with a processing blade 16, a cylindrical outer peripheral surface 18, and an insertion guide 14, virtually
- the shank 54 has the same configuration as the blade portion 14 and is integrally provided at the front end of the shank 54, that is, at a portion between the groove 56 and the shank 54.
- a small-diameter portion 58 is provided between the groove 56 and the insertion guide 24, and chips cut by the groove processing blade 16 pass through the annular space on the outer peripheral side of the small-diameter portion 58. Is discharged.
- the chip dividing groove 30 is cut by the chip dividing tool 52 on the inner peripheral surface of the prepared hole 22.
- the chips at the time of tapping can be surely cut off and discharged well, so that the same effect as in the above embodiment can be obtained.
- the chip cutting tool 52 is provided integrally with the drill 50, following the pre-drilling (prepared hole drilling) with the drill 50, the chip is cut without changing the tool. Processing of the chip dividing groove 30 (grooving step) by the tool 52 can be continuously and efficiently performed.
- the diameter of the prepared hole 22 is the same, it can be used in common for tapping of a plurality of types of female screws 32 having different pitches and the like.
- FIG. 7 shows a drill tool 50 of FIG. 6 in which a groove 56 is coaxially and integrally provided via a small diameter portion 58 on the tip side of the composite tool of FIG. 2
- the chip cutting tool 4 2 cuts the chip 2 on the inner peripheral surface of the prepared hole 2 2.
- the chip cutting tool 42 is provided integrally with the cutting tap 40 and the groove 56 functioning as a drill, the chip cutting is performed following the preparation of the pre-drilled hole (prepared hole processing step) by the groove 56. Machining of the chip separating groove 30 with the tool 42 (grooving step) and tapping with the cutting tap 40 (tap setting step) can be performed continuously and efficiently without changing tools.
- the chip separating groove 30 existing in the female screw 32 and the groove processing blade 16 are to be removed. It is only necessary to match and pull out.
- the chip cutting tool 60 in FIG. 8 is used when the groove processing blade 64 of the blade portion 62 is twisted at a predetermined twist angle, and is screwed into the pilot hole 22 along the twist. Accordingly, since the spiral chip cutting groove is cut, substantially the same operation and effect as those of the chip cutting tool 10 can be obtained.
- the torsion angle of the grooving blade 6 4 may be appropriately set so as to intersect with the thread groove 34 of the female screw 32 to be tapped, but generally has a relatively small torsion angle of about 30 ° or less. good.
- a cylindrical portion of the blade portion 62 having a diameter slightly smaller than the prepared hole 22 corresponds to the main body portion.
- FIG. 8 is a view corresponding to FIG. 1, wherein (a) is a front view, and (b) is a bottom view as viewed from the distal end side.
- a blade portion 62 having the groove processing blade 64 can be provided instead of the chip cutting tool 42.52 of the composite tool shown in FIGS. 5 to 7, a blade portion 62 having the groove processing blade 64 can be provided instead of the chip cutting tool 42.52 of the composite tool shown in FIGS. 5 to 7, a blade portion 62 having the groove processing blade 64 can be provided instead of the chip cutting tool 42.52 of the composite tool shown in FIGS. 5 to 7, a blade portion 62 having the groove processing blade 64 can be provided.
- FIG. 9 (a) to 9 (c) are diagrams illustrating another embodiment of a chip cutting tool
- FIG. 9 (a) is a cross section of the main body 70 having a triangular shape and having a larger diameter than the pilot hole 22.
- three vertices 70'a to 70c are used as grooving blades as they are.
- B) shows a case where the cross section of the main body 72 is square, and four vertices 72 a to 72 d having a larger diameter than the prepared hole 22 are used as they are as the grooving blade.
- (C) shows a cross section of the main body 74 having a diameter slightly smaller than the prepared hole 22 as in the case of the chip cutting tools 10 and 60, and a single groove processing blade 7 4.
- the main body 70.72 may be a straight prism, but it is twisted at a predetermined twist angle, and the vertices 70a to 70c and 72a to 72d, It may be twisted around the axis.
- the grooving blade 74 a of (c) may be linear as in the grooving blade 16 or may be twisted as in the grooving blade 64.
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Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003261891A AU2003261891A1 (en) | 2003-07-03 | 2003-09-03 | Chip parting tool for tapping, and female screw cutting method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003270846A JP3808455B2 (ja) | 2003-07-03 | 2003-07-03 | タップ立て用切り屑分断工具、およびめねじ加工方法 |
JP2003-270846 | 2003-07-03 |
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WO2005002771A1 true WO2005002771A1 (ja) | 2005-01-13 |
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PCT/JP2003/011225 WO2005002771A1 (ja) | 2003-07-03 | 2003-09-03 | タップ立て用切り屑分断工具、およびめねじ加工方法 |
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JP (1) | JP3808455B2 (ja) |
KR (1) | KR100723848B1 (ja) |
AU (1) | AU2003261891A1 (ja) |
WO (1) | WO2005002771A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100727557B1 (ko) | 2005-03-14 | 2007-06-14 | 현대자동차주식회사 | 칩 브레이커가 구비된 실린더 헤드 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102011001772A1 (de) * | 2010-12-14 | 2012-06-14 | EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik für Präzisionswerkzeuge | Gewindeerzeugungswerkzeug zum Herstellen eines Gewindes in einem Werkstück |
JP6377662B2 (ja) * | 2016-03-22 | 2018-08-22 | 株式会社シン・コーポレイション | フィルターユニットの製造方法 |
JP6881731B2 (ja) * | 2016-12-12 | 2021-06-02 | 株式会社ワイテック | ねじさらい具 |
WO2023203792A1 (ja) * | 2022-04-19 | 2023-10-26 | エイベックス株式会社 | 切削加工方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1408793A (en) * | 1920-10-07 | 1922-03-07 | Jr John F Anderson | Combination drill and tap |
DE2427616A1 (de) * | 1974-06-07 | 1975-12-18 | Siegfried Khan | Gewindeschneidwerkzeug |
JPS63245316A (ja) * | 1987-03-31 | 1988-10-12 | Hitachi Ltd | 軸受溝形成方法 |
JPH01127201A (ja) * | 1987-11-10 | 1989-05-19 | Toyoda Mach Works Ltd | 円筒状ワークの内周加工方法 |
JPH06328303A (ja) * | 1993-03-23 | 1994-11-29 | Canon Inc | 円筒部材およびその製法 |
-
2003
- 2003-07-03 JP JP2003270846A patent/JP3808455B2/ja not_active Expired - Fee Related
- 2003-09-03 KR KR20067000183A patent/KR100723848B1/ko active IP Right Grant
- 2003-09-03 WO PCT/JP2003/011225 patent/WO2005002771A1/ja active Application Filing
- 2003-09-03 AU AU2003261891A patent/AU2003261891A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1408793A (en) * | 1920-10-07 | 1922-03-07 | Jr John F Anderson | Combination drill and tap |
DE2427616A1 (de) * | 1974-06-07 | 1975-12-18 | Siegfried Khan | Gewindeschneidwerkzeug |
JPS63245316A (ja) * | 1987-03-31 | 1988-10-12 | Hitachi Ltd | 軸受溝形成方法 |
JPH01127201A (ja) * | 1987-11-10 | 1989-05-19 | Toyoda Mach Works Ltd | 円筒状ワークの内周加工方法 |
JPH06328303A (ja) * | 1993-03-23 | 1994-11-29 | Canon Inc | 円筒部材およびその製法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100727557B1 (ko) | 2005-03-14 | 2007-06-14 | 현대자동차주식회사 | 칩 브레이커가 구비된 실린더 헤드 |
Also Published As
Publication number | Publication date |
---|---|
AU2003261891A1 (en) | 2005-01-21 |
JP2005022066A (ja) | 2005-01-27 |
KR100723848B1 (ko) | 2007-05-31 |
JP3808455B2 (ja) | 2006-08-09 |
KR20060037324A (ko) | 2006-05-03 |
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