WO2018029780A1 - 盛上げタップ及び盛上げタップの製造方法 - Google Patents
盛上げタップ及び盛上げタップの製造方法 Download PDFInfo
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- WO2018029780A1 WO2018029780A1 PCT/JP2016/073424 JP2016073424W WO2018029780A1 WO 2018029780 A1 WO2018029780 A1 WO 2018029780A1 JP 2016073424 W JP2016073424 W JP 2016073424W WO 2018029780 A1 WO2018029780 A1 WO 2018029780A1
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- thread
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- tap
- pilot hole
- screw
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- 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
- B23G7/00—Forming thread by means of tools similar both in form and in manner of use to thread-cutting tools, but without removing any material
- B23G7/02—Tools for this purpose
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- 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
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- 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
- B23G7/00—Forming thread by means of tools similar both in form and in manner of use to thread-cutting tools, but without removing any material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/48—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools threading tools
- B23P15/52—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools threading tools taps
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- 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
- B23G2200/34—Tools having an increasing diameter in the direction of the shank from the tip
Definitions
- the present invention relates to a build-up tap, and more particularly to a build-up tap and a method of manufacturing the build-up tap capable of suppressing processing defects of a female screw.
- the screw thread at the tip of the flanged portion of the build-up tap is an incomplete thread formed in such a manner that a part of the screw thread is cut off and a flank is formed at the tip of the flanged portion It is known to be formed as a screw thread (for example, Patent Document 1). Conventionally, in order to remove the top of the half end, chamfering is performed along the circumferential direction of the axis of the buildup tap.
- the top of the chamfered half-end peak is a curved surface along its axis in the axial view of the build-up tap (the height of the half-end peak is substantially constant along the axis) )It is formed.
- the edge of the top of the half end is rubbed by rubbing against the inner circumferential surface of the pilot with the apex of the half end pressed.
- the portion is chipped (usually, the inner diameter of the pilot hole is larger than the outer diameter of the half-end peak, but the offset of the buildup tap may cause the top of the half-end peak to contact with the pilot hole). Therefore, there is a problem that the processing defect of the female screw is likely to be caused by the fragments of the half end bite being bitten between the inner peripheral surface of the pilot hole and the screw thread of the build-up tap.
- the present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a build-up tap and a method of manufacturing the build-up tap which can suppress processing defects of a female screw.
- the half-end peak portion is a convex portion formed to protrude in the radial direction in the axial direction of the full peak portion, and the protrusion thereof Since the relief tap is formed to have a diameter smaller than that of the portion, when the build-up tap is rotated in a state where the inner circumferential surface of the pilot hole and the tail cam portion are in contact, While making it bite into a surrounding surface, the effect
- the half-end peak portion is provided with an inclined surface which is formed on the tip end side of the bite portion and the half-end peak is chamfered. Since the inclined surface is formed in a posture inclined toward the full mountain side with respect to the direction perpendicular to the axis in a cross-sectional view cut at a plane including the axis, the apex of the half end mountain is positioned on the full mountain side be able to.
- the inclined surface is formed in a posture inclined toward the full peak side with respect to the direction perpendicular to the axis in a cross-sectional view cut along a plane including the axis, the shape in which the apex of the half end peak projects in the radial direction (An angled shape tapered in the direction away from the axis).
- the convex portion at the end of the mountain portion can easily bite into the inner peripheral surface of the pilot hole, so that the effect of the convex portion can be enhanced. Therefore, since it can suppress rubbing in the state where the end peak part was pressed by the inner skin of a pilot hole, it is effective in the ability to control that a tip end peak part is missing.
- the inclined surface is a virtual line including the inclined surface, Since it is formed in a posture in which the flanged part adjacent to the part or the screw thread of the full peak does not overlap, when chamfering the half end with the grinding stone to form the inclined surface (half end), the axial direction Can prevent the grinding wheel from coming into contact with the thread adjacent to the end of the end. Therefore, there is an effect that the inclined surface can be easily formed without complicated control of the grinding wheel.
- the inclined surface Since it is formed substantially parallel to the flank on the side of the end of the thread in the thread of the peak, the action of raising by the convex portion of the end of the end can be enhanced. Therefore, since it can suppress rubbing in the state where the end peak part was pressed by the inner skin of a pilot hole, it is effective in the ability to control that a tip end peak part is missing.
- the screw thread of the biting portion continuously connected to the half end is bited at the tip end side of the biting portion
- the chamfer has a chamfered surface on which the thread flank of the thread is chamfered, and the heights of the crests of the half and crests are progressively higher along the ridge of the crest from the tip of the barbed portion
- the build-up tap rotates in a state where the inner circumferential surface of the pilot hole is in contact with the tail half, the inner circumferential surface of the pilot hole is gradually It has the effect of being able to boost.
- a build-up tap according to claim 6 in the axial direction view of the full peak portion, it has a convex portion formed to protrude in the radial direction, and a relief portion formed to have a smaller diameter than the convex portion. It has a thread formation process of forming a screw thread in a complete ridge and a flange, and a chamfering process in which a chamfered surface is formed in a half end peak by chamfering the half end formed in the thread formation process.
- the convex portion and the relief portion are formed in the semicircular end portion except the convex portion and the relief portion formed by the semi end portion, the convex portion and the relief portion of the semicircular end portion can be easily formed. it can.
- the convex portion and the relief similar to the screw of the full ridge and the flanged portion are originally formed on the end of the flange. Therefore, there is an effect that the convex portion and the relief portion of the half end peak portion can be easily formed by chamfering the convex portion and the relief portion which are formed at the half end portion and leaving the convex portion.
- FIG. 2 is a partial cross-sectional view of the boost tap taken along line II-II of FIG. 1 (b).
- A) is a front view of the build-up tap in 2nd Embodiment
- (b) is a fragmentary sectional view of the build-up tap in the IIIb-IIIb line of FIG. 3 (a).
- FIG. 1A is a side view of the build-up tap 1 according to the first embodiment of the present invention.
- FIG. 1 (a) a part of the build-up tap 1 is omitted and shown in FIG. 1 (a), the build-up tap 1 includes a shank 2 and a tip end side of the shank 2 (FIG. 1).
- internal thread processing by the buildup tap 1 is not limited to mechanical processing by a machining center or the like, and may be performed manually.
- the shank 2 is provided with a cylindrical main body portion 20 and a shank square portion 21 which is disposed on the rear end side (right side of FIG. 1A) of the main body portion 20 and is formed into a substantially square cross section. It is formed from high speed tool steel.
- the material of the shank 2 is not limited to high speed tool steel, and may be made of cemented carbide.
- the external thread 3 is connected to a biting portion 31 disposed on the tip end side (left side in FIG. 1A) of the external thread 3 and the biting portion 31 and is disposed on the shank 2 side. It is a part for forming a female screw (plastic working) by screwing the inside of a pilot hole provided in a workpiece.
- the bite portion 31 is a portion for forming an internal thread by biting into the surface layer portion of the lower hole of the workpiece to plastically deform the workpiece, and the complete peak portion 32 is a thread for the workpiece.
- the complete peak portion 32 is a thread for the workpiece.
- a screw thread having a substantially uniform height from the valley bottom is formed along the spirally wound wire of a predetermined lead angle in the flanged portion 31 and the full ridge portion 32.
- FIG.1 (b) is a front view of the buildup tap 1 seen from the arrow Ib direction of Fig.1 (a).
- FIG. 2 is a partial cross-sectional view of the buildup tap 1 taken along line II-II in FIG. 1 (b).
- one part of the buildup tap 1 is abbreviate
- the angle of the thread of the biting portion 31 and the complete peak portion 32 is formed at about 60 °, in FIG. 2, the thread of the biting portion 31 and the complete peak portion 32 is schematically illustrated. .
- the screw threads of the barbed portion 31 and the complete peak portion 32 are viewed in the axial (hereinafter referred to as “axis O”) direction of the barbed portion 31 and the complete peak portion 32.
- Convex portions 31a and 32a formed to protrude in the radial direction (direction away from the axis O)
- relief portions 31b and 32b formed smaller in diameter than the convex portions 31a and 32a
- threads Each has a pair of flanks 31c, 32c formed as surfaces connecting the top and the bottom of the valley.
- the convex portions 31a and 32a are portions for forming a female screw by plastically deforming the workpiece by biting into the surface layer portion of the lower hole of the workpiece, and the convex portions 31a and 32a
- the clearances 31 b and 32 b are respectively formed between them. That is, on the screw thread of the external thread portion 3, the convex portion 31a (32a) and the small diameter relief portion 31b (32b) are along the lead direction of the screw (that is, along the spiral of a predetermined lead angle)
- the outer shape of the male screw portion 3 in the direction of the axis O is formed in a polygonal shape (in the present embodiment, substantially in the shape of a square).
- the convex portion 32a (recessed portion 32b) of the complete peak portion 32 is formed with a larger diameter than the convex portion 31a (recessed portion 31b) of the bite portion 31 (direction perpendicular to the axis O).
- the thread of the bite portion 31 is tapered.
- the thread of the tip end portion of the biting portion 31 (the near side of the sheet surface of FIG. 1B, the left side of FIG. 2) is formed with a half tip portion 33 approximately half a circumference from the tip.
- this half end mountain portion 33 is a part of the thread of the barbed portion 31, for convenience of explanation, in order to facilitate the understanding, the barbed portion 31 and the reference numerals will be separately described.
- the end peak portion 33 is formed by chamfering the portion shown by T) (In addition, in the following description, for example, “a position rotated approximately 180 ° around the axis O along the spiral from the position shown by P1 The description to P3 is abbreviated as “from P1 to P3.” Moreover, when P1 is used as a reference, the position of P2 is approximately 80 ° along the spiral winding, and P3 is approximately 180 °, P4 corresponds to about 240 °, and P5 corresponds to about 440 °, respectively, rotated positions).
- the thread of the biting portion 31 in the region from P1 to P3 is a thread having no flank formed on the tip side of the biting portion 31 Starting from P3 and gradually forming a flank (a flank on the tip side of the barbed portion 31).
- the area from P1 to P4 is chamfered, and the thread of the barbed portion 31 in the area from P4 to P5 is not chamfered.
- a convex portion 33a formed to protrude in the radial direction (a direction away from the axis O) in the axial O direction as viewed in the axial O direction, and a relief portion 33b formed smaller in diameter than the convex portion 33a. And are formed.
- the projection 33a bites into the inner peripheral surface of the pilot hole and the pilot hole is formed by the projection 33a.
- the effect of raising the inner circumferential surface of the lower end of the lower end of the lower end of the lower end of the lower end of the lower end portion can be produced.
- the top of the end is chamfered along the circumferential direction of the axis O (The height of the top of the end after chamfering is formed substantially constant along the axis O, the inner circumference of the pilot hole Compared with the case where the action of raising the surface does not occur, it is possible to suppress the rubbing in the state where the end ridge portion 33 is pressed to the inner peripheral surface of the pilot hole, so it is possible to suppress the loss of the end ridge portion 33. Therefore, it is possible to suppress biting of fragments of the end peak 33 between the inner circumferential surface of the pilot hole and the thread of the biting portion 31 (full peak 32) at the time of internal thread machining. Processing defects can be suppressed.
- the half end mountain portion 33 includes an inclined surface 33 c formed on the tip end side (left side in FIG. 2) of the bite portion 31, and the inclined surface 33 c is a sectional view cut along a plane including the axis O In a cross-sectional view), it is formed as a flat surface inclined to the full peak 32 side (the rear end side of the external thread 3; right side in FIG. 2) than the direction perpendicular to the axis O.
- the inclined surface 33c is inclined toward the full peak 32 side with respect to the direction perpendicular to the axis O (the posture along the direction indicated by the virtual line V1, ie, the inclined surface 33c in the cross sectional view In a posture in which the other end is located on the side of the full mountain 32 with respect to the one end on the side of the axis O), the half-end mountain is formed as a chamfered surface.
- the top of the half-end peak portion 33 can be located on the full peak portion 32 side (the rear end side of the biting portion 31 (right side in FIG.
- the inclined surface 33c is formed to be inclined toward the full peak 32 side with respect to the direction perpendicular to the axis O (the half end peak is chamfered along the imaginary line V1).
- the top of the portion 33 has a radially protruding shape (a tapered shape in a direction away from the axis O).
- the convex portion 33a can easily bite into the inner circumferential surface of the pilot hole, so that the effect of the bulging by the convex portion 33a can be enhanced. Therefore, since it can suppress rubbing in the state by which the end peak part 33 was pressed by the inner skin of a pilot hole, it can control that the end peak part 33 falls off.
- the inclined surface 33c is the tip end side (half end peak 33 side of the bit end 31 in the screw thread of the flange 31 or the full peak 32 adjacent to the end peak 33) (left side in FIG. 2).
- the thread of the full peak 32 is adjacent to the half end peak 33 in FIG. 2, but the P1 to P2 in FIG. 1 (b) are formed.
- the end ridges 33 in the region of (3) are adjacent to the threads of the bite 31 and the ridges 33 in the region of P2 to P3 are adjacent to the threads of the full ridge 32).
- flank 33 d of the half end mountain portion 33 is a portion formed by the half end mountain (an extension portion of the screw thread of the barbed portion 31), the rear end sides of the barbed portion 31 and the full mountain portion 32 ( It is formed substantially parallel to the flanks 31c and 32c in the right side of FIG.
- the angle formed by the inclined surface 33c and the flank 33d in a cross sectional view is the angle between the thread of the biting portion 31 and the complete peak portion 32 (a pair of flanks 31c (flanks 32c).
- And 30.degree. So that the effect of raising by the convex portion 33a can be enhanced. Therefore, since it can suppress rubbing in the state by which the end peak part 33 was pressed by the inner skin of a pilot hole, it can control that the end peak part 33 falls off.
- substantially parallel and substantially identical are mainly intended to allow a tolerance at the time of chamfering of the half end ridge portion 33 (at the time of formation of the inclined surface 33c), and the flank angle of the inclined surface 33c is bitten It is defined as being formed within a half angle range of ⁇ 5 ° of the thread of the portion 31 (full peak portion 32).
- the area from P1 to P4 is chamfered. That is, the screw thread of the biting portion 31 in the region from P3 to P4 is also chamfered to form a chamfered portion 31 '.
- the chamfered portion 31c ' includes a chamfered surface 31c' which is chamfered in a plane substantially parallel to the flank 31c (the flank 31c on the tip end side of the biting portion 31) which is also formed on the thread of the biting portion 31.
- the flank 31 c (the flank 31 c on the tip side of the bited portion 31) is formed on the thread of the bited portion 31 in the region from P3 to P4
- the flank 31 c is formed on the thread of the bited portion 31 in the region from P3 to P4
- it is formed in a shape close to the end of the peak (the length of the flank 31c in a cross sectional view is formed relatively short). Therefore, in the case of chamfering only the half end in the region from P1 to P3, a step is generated in the height of the thread with P3 as the boundary.
- the chamfered portion 31 ' is provided (that is, the area from P3 to P4 is also chamfered), thereby suppressing generation of a step with P3 as the boundary. can do.
- the heights of the peaks of the end mountain portion 33 and the chamfered portion 31 ′ are formed in such a manner that they gradually increase from the tip end of the barbed portion 31 along the ridge of the mountain (P1 to P4 In the region, the half-end peak 33 and the chamfered portion 31 'are formed so that the height of the mountain gradually increases, so the build-up tap 1 rotates in a state where the inner circumferential surface of the pilot hole contacts the half-end peak 33.
- the inner peripheral surface of the pilot hole can be gradually raised by the thread of the half end ridge portion 33, the chamfered portion 31 'and the biting portion 31.
- the half end mountain portion 33 is a part of the screw thread of the biting portion 31, but for example, the “screw thread of the biting portion” described in claims 3 and 4 is The thread of the biting portion 31 other than the portion 33 is defined, and the region from P3 to P5 corresponds to that.
- a thread formation step and a chamfering step are sequentially performed.
- screw threads of the flanged portion 31 and the complete ridge portion 32 provided with the convex portions 31a and 32a and the relief portions 31b and 32b are formed.
- the screw thread on the tip end side of the biting portion 31 is formed with a half end, and this half end is formed as a part of the screw thread of the biting portion 31.
- the convex portion and the relief portion are formed.
- the angle at which the apexes of the adjacent convex portions in the half end slope are inclined toward the full peak 32 side from the direction perpendicular to the axis O in the cross sectional view in the present embodiment, By chamfering (in the direction indicated by the imaginary line V1 in FIG. 2) in a posture substantially parallel to the flanks of the flanks 31c and 32c on the tip side and the flanks of the mountain ends, It is possible to chamfer without leaving convex portions and relief portions. That is, the convex portion 33a, the relief portion 33b, and the inclined surface 33c of the half end mountain portion 33 can be easily formed by using the convex portion and the relief portion formed on the half end mountain.
- the angle formed by the inclined surface 33c and the flank 33d in the cross sectional view is set to be substantially the same as the angle of the thread of the barbed portion 31 and the perfect peak portion 32 has been described.
- the angle formed by the inclined surface 233 c and the flank 233 d is set to be larger than the angle of the thread of the barbed portion 231 and the complete peak portion 232.
- FIG. 3 (a) is a front view of the build-up tap 201 in the second embodiment
- FIG. 3 (b) is a partial cross-sectional view of the build-up tap 201 along the line IIIb-IIIb in FIG. 3 (a).
- a part of buildup tap 201 is abbreviate
- the angle of the thread of the barbed portion 231 and the complete peak portion 232 is formed at about 60 °, in FIG. 3, the thread of the barbed portion 231 and the complete peak portion 232 is schematically illustrated. .
- an oil groove 240 recessed toward the axis O is formed on the outer peripheral surface (relief portions 231 b and 232 b) of the male screw portion 203 and in cross section
- the angle formed between the inclined surface 233c and the flank 233d is set to be larger than the angle of the threads of the barbed portion 231 and the complete peak portion 232, and the other configuration is the same as that of the first embodiment. Ru.
- the inclined surface is formed in a posture inclined to the complete peak portion 232 side (the rear end side of the biting portion 231.
- the inclined surface 233 c has the virtual line V 2 including the inclined surface 233 c and the barbed portion 231 or the full peak portion 232 adjacent to the end peak portion 233. It is more preferable to be formed in a posture in which the screw threads do not overlap (do not overlap) (in FIG. 3 (b), the screw thread of the full peak portion 232 is adjacent to the half end peak portion 233 As with the configuration, some of the crests 233 are adjacent to the threads of the barbed portion 231 in cross-sectional view).
- the grinding stone contacts the thread of the barbed portion 231 and the full peak portion 232 adjacent to the half end peak portion 233 Can be suppressed. Therefore, the inclined surface 233c can be easily formed without complicated control of the grinding wheel.
- the present invention was explained based on the above-mentioned embodiment, the present invention is not limited to the above-mentioned form at all, It is easy that various modification improvement is possible in the range which does not deviate from the meaning of the present invention It can be guessed that.
- the screw thread angles of the flanged portions 31, 231 and the full ridge portions 32, 232 are exemplifications, and may be set as appropriate (generally, 25 ° to 65 ° can be mentioned as a general thread angle) .
- the half ridges 33, 233 are formed leaving the screw threads of the flanged portions 31, 231 and the full ridges 32, 232 adjacent to the half ridges 33, 233 (the half ridges are chamfered (The case where the inclined surfaces 33c and 233c are formed) has been described, but the present invention is not necessarily limited thereto.
- the barbed portions 31, 231 adjacent to the end peak portions 33 and 233 or complete peak portions The configuration may be such that the tops of the 32, 232 threads are chamfered (the imaginary lines V1, V2 overlap with the barbed portions 31, 231 or the full ridges 32, 232). That is, it suffices to form the end ridges 33, 233 (inclined surfaces 33c, 233c) by chamfering leaving at least the convex portion and the relief formed at the end before chamfering.
- the present invention is not necessarily limited to this.
- the end ridges are not chamfered but the end ridges are formed.
- the configuration may be a part. That is, since a convex part and a relief part are originally formed in the half end mountain (state before forming the half end peak 33, 233), the structure which does not chamfer the peak of the half end may be sufficient.
- the said each embodiment demonstrated the case where the external shape in the axial O direction view of the external thread part 3 (biting part 31, 231 and perfect peak part 32, 232) was formed in a substantially 9 angle shape, it is not necessarily required.
- the shape is not limited to this, and may be a polygonal shape other than a decahedron. For example, four, five, six or octagonal shapes are exemplified as general shapes.
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Abstract
Description
図1(a)に示すように、盛上げタップ1は、シャンク2と、そのシャンク2の先端側(図1(a)の左側)に配設されるおねじ部3とからなり、シャンク2を保持するホルダー(図示せず)を介して伝達される加工機械の回転力とねじのリードに合った送りとによって、被加工物の下穴(めねじを形成するために被加工物にあらかじめ形成される穴)にめねじを形成する用途に用いられる工具である。なお、盛上げタップ1によるめねじ加工は、マシニングセンター等による機械加工に限られず、手作業によって行われても良い。
31,231 食付き部
31´,231´ 面取り部
31c´,231c´ 面取り面
32,232 完全山部
33,233 半端山部
33a,233a 半端山部の凸部
33b,233b 半端山部の逃げ部
33c,233c 傾斜面
O 食付き部および完全山部の軸(軸)
V1,V2 傾斜面を含む仮想線
Claims (6)
- ねじ山を有する完全山部と、その完全山部に連設されると共にテーパ状のねじ山を有する食付き部とを備え、その食付き部の先端部に形成されるねじ山の一部が、半端山から形成される半端山部として構成され、塑性変形によってめねじを形成する盛上げタップにおいて、
前記半端山部は、前記完全山部の軸方向視において、径方向へ突出して形成される凸部と、その凸部よりも小径に形成される逃げ部とを備えることを特徴とする盛上げタップ。 - 前記半端山部は、前記食付き部の先端側に形成されると共に前記半端山が面取りされた傾斜面を備え、
前記傾斜面は、前記軸を含む平面で切断した断面視において、前記軸と直角な方向よりも前記完全山部側に傾斜した姿勢で形成されることを特徴とする請求項1記載の盛上げタップ。 - 前記軸を含む平面で切断した断面視において、前記傾斜面は、その傾斜面を含む仮想線と、前記半端山部に隣接する前記食付き部または前記完全山部のねじ山とが重複しない姿勢で形成されることを特徴とする請求項2記載の盛上げタップ。
- 前記軸を含む平面で切断した断面視において、前記傾斜面は、前記半端山部に隣接する前記食付き部または前記完全山部のねじ山における前記半端山部側のフランクと略平行に形成されることを特徴とする請求項3記載の盛上げタップ。
- 前記半端山部に連設される前記食付き部のねじ山は、その食付き部の先端側における前記食付き部のねじ山のフランクが面取りされた面取り面を有する面取り部を備え、
前記半端山部および前記面取り部の山の高さは、その山のつる巻き線に沿って前記食付き部の先端部から漸次高くなる態様で形成されることを特徴とする請求項4記載の盛上げタップ。 - ねじ山を有する完全山部と、その完全山部に連設されると共にテーパ状のねじ山を有する食付き部とを備え、その食付き部のねじ山の一部が、半端山から形成される半端山部として構成され、塑性変形によってめねじを形成する盛上げタップの製造方法において、
前記完全山部の軸方向視において、径方向に突出して形成される凸部、及び、その凸部よりも小径に形成される逃げ部を備えるねじ山を、前記完全山部および前記食付き部に形成するねじ山形成工程と、
そのねじ山形成工程で形成された前記半端山を面取りすることで前記半端山部に面取り面を形成する面取り工程とを備え、
前記面取り工程では、前記半端山にもとより形成される凸部および逃げ部を残して前記半端山部に凸部および逃げ部を形成することを特徴とする盛上げタップの製造方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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EP16912663.8A EP3473365A4 (en) | 2016-08-09 | 2016-08-09 | THREAD MILLING DRILL AND MANUFACTURING METHOD FOR THREADING DRILLING DRILL |
JP2018533338A JP6713539B2 (ja) | 2016-08-09 | 2016-08-09 | 盛上げタップ及び盛上げタップの製造方法 |
US16/316,417 US11007590B2 (en) | 2016-08-09 | 2016-08-09 | Thread forming tap and manufacturing method for thread forming tap |
CN201680086612.4A CN109311109B (zh) | 2016-08-09 | 2016-08-09 | 挤压丝锥及挤压丝锥的制造方法 |
KR1020187033989A KR102162235B1 (ko) | 2016-08-09 | 2016-08-09 | 나사 성형용 탭 및 나사 성형용 탭의 제조 방법 |
PCT/JP2016/073424 WO2018029780A1 (ja) | 2016-08-09 | 2016-08-09 | 盛上げタップ及び盛上げタップの製造方法 |
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PCT/JP2016/073424 WO2018029780A1 (ja) | 2016-08-09 | 2016-08-09 | 盛上げタップ及び盛上げタップの製造方法 |
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US (1) | US11007590B2 (ja) |
EP (1) | EP3473365A4 (ja) |
JP (1) | JP6713539B2 (ja) |
KR (1) | KR102162235B1 (ja) |
CN (1) | CN109311109B (ja) |
WO (1) | WO2018029780A1 (ja) |
Families Citing this family (2)
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DE102016122701B4 (de) * | 2016-11-24 | 2023-10-26 | EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik für Präzisionswerkzeuge | Gewindeformer und Verfahren zur Herstellung eines Gewindeformers |
USD921722S1 (en) * | 2020-05-26 | 2021-06-08 | Devin Corbit | Fluted tap |
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US9682435B2 (en) * | 2014-08-28 | 2017-06-20 | Kennametal Inc. | Thread forming taps |
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- 2016-08-09 JP JP2018533338A patent/JP6713539B2/ja active Active
- 2016-08-09 CN CN201680086612.4A patent/CN109311109B/zh active Active
- 2016-08-09 EP EP16912663.8A patent/EP3473365A4/en active Pending
- 2016-08-09 WO PCT/JP2016/073424 patent/WO2018029780A1/ja unknown
- 2016-08-09 KR KR1020187033989A patent/KR102162235B1/ko active IP Right Grant
- 2016-08-09 US US16/316,417 patent/US11007590B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
EP3473365A4 (en) | 2019-10-16 |
US20190291196A1 (en) | 2019-09-26 |
EP3473365A1 (en) | 2019-04-24 |
CN109311109A (zh) | 2019-02-05 |
KR102162235B1 (ko) | 2020-10-06 |
CN109311109B (zh) | 2020-09-15 |
JP6713539B2 (ja) | 2020-06-24 |
KR20180133516A (ko) | 2018-12-14 |
US11007590B2 (en) | 2021-05-18 |
JPWO2018029780A1 (ja) | 2019-04-11 |
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