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WO2019043775A1 - Vis de blocage et son procédé de fabrication - Google Patents

Vis de blocage et son procédé de fabrication Download PDF

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Publication number
WO2019043775A1
WO2019043775A1 PCT/JP2017/030883 JP2017030883W WO2019043775A1 WO 2019043775 A1 WO2019043775 A1 WO 2019043775A1 JP 2017030883 W JP2017030883 W JP 2017030883W WO 2019043775 A1 WO2019043775 A1 WO 2019043775A1
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WO
WIPO (PCT)
Prior art keywords
screw
angle
thread
flank
groove
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2017/030883
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English (en)
Japanese (ja)
Inventor
芳隆 秋野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PCT/JP2017/030883 priority Critical patent/WO2019043775A1/fr
Publication of WO2019043775A1 publication Critical patent/WO2019043775A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
    • 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
    • B23G1/00—Thread cutting; Automatic machines specially designed therefor
    • B23G1/36—Thread cutting; Automatic machines specially designed therefor by grinding
    • B23G1/38—Thread cutting; Automatic machines specially designed therefor by grinding with grinding discs guided along the workpiece in accordance with the pitch of the required thread
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/02—Shape of thread; Special thread-forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/30—Locking exclusively by special shape of the screw-thread

Definitions

  • the present invention relates to a locking screw for preventing loosening of a screw member having a structure in which an external screw and a female screw are screwed to clamp and fix a fixed member, and a method of manufacturing the same.
  • This locking screw nut is a locking screw in which the thread of at least one of an external thread and an internal thread is formed in a wavelike manner along the helical wire of the thread, and the lead angle changes periodically.
  • Patent No. 5729697 gazette
  • the present invention was made in view of the above background art, and has an object to provide a locking screw that exerts a locking function of a nut reliably with a simple configuration and is inexpensive and inexpensive and a method of manufacturing the same. Do.
  • This invention is a locking screw used to fix a fixed member by an external thread and an internal thread, and flank surfaces of threads of the external thread are adjacent to each other on the valley bottom side of a thread groove between the threads.
  • the angle of the screw angle which is the angle of the valley angle which is an angle which the flank forms, and the angle of the screw angle which is the angle of the flank facing each other in the screw groove on the top side of the screw is different.
  • flanks of the thread are discontinuous at the bottom side flank that is the valley bottom side of the thread and the top side flank that is the top side of the thread And a flank boundary line which is a boundary between the discontinuous bottom side flank and the top side flank, and is a locking screw formed in a wavelike manner on the flank in a predetermined cycle.
  • flank boundary lines opposed to each other in the screw groove are formed symmetrically about the valley bottom.
  • flank boundaries located on both sides of the top of the thread are formed symmetrically about the top.
  • the wave shapes of the flank boundaries located on both sides of the top of the thread may be formed in different phases.
  • the thread of the male screw may be formed in a wave shape with respect to the spiral direction of the screw, and the lead angle may be periodically changed.
  • the flank boundary line is formed with a plurality of waves in one pitch lead of the male screw.
  • the flank boundary line is provided with a plurality of waves in one cycle of the change in the lead angle of the male screw.
  • the present invention is also a manufacturing method of a locking screw used for fixing a fixed member by an external thread and an internal thread, wherein the angle of the tip end of the flank faces of mutually facing thread grooves of the external thread to be manufactured.
  • a conical rotary tool having an apex angle equal to the formed angle, the rotary tool is abutted against the side surface of a cylindrical base material forming the male screw, and the rotary tool is rotated to lead the male screw
  • the rotary tool is relatively moved in a spiral with a constant radius at a corner to cut the side of the base material to form the thread groove, wherein the position of the rotary tool is in the longitudinal direction of the male screw
  • a locking screw which is changed in the direction of the central axis at a constant cycle, and in which the lead angle is changed at the constant cycle with respect to the average lead angle to form the screw groove in a wave shape of the wavelength of the constant cycle. Manufacturing method.
  • the present invention is also a manufacturing method of a locking screw used to fix a fixed member by an external thread and an internal thread, and the angles of the tip face each other on the top side of the thread of the external thread to be manufactured.
  • a conical second rotary tool having an apex angle equal to the angle of the tip angle which is the angle formed by the flanks, and a conical second apex having an apex angle smaller than the root angle of the thread groove between the threads.
  • the first rotary tool is brought into contact with the side surface of a cylindrical base material provided with a rotary tool and forming the male screw, and the first rotary tool is rotated so that the lead angle of the male screw is constant.
  • a conical second rotary tool having an apex angle smaller than an angle of a bottom of a thread groove between the threads, and a conical first rotary tool having an apex angle equal to an angle of a screw tip angle which is an angle of And the second rotary tool is brought into contact with the side surface of the cylindrical base material forming the male screw, and the second rotary tool is rotated to have a constant radius at the lead angle of the male screw.
  • the second rotary tool is relatively moved in a spiral manner to cut the side surface of the base material to form the screw groove, and at this time, the second rotary tool has a central axis of the male screw.
  • the first rotary tool is relatively moved in a spiral at the lead angle of the male screw to cut the side surface of the base material, and the side surface is spirally formed with a constant radius at the lead angle of the male screw.
  • Forming a thread groove by the thread forming a bottom side flank surface on the valley bottom side of the thread groove and a top side flank surface on the top side of the thread in a discontinuous surface; It is a manufacturing method of the locking screw which forms the flank boundary line which is a boundary in the wavelike form along the flank in the cycle.
  • the locking screw manufactured by the manufacturing method is used as a master, the shape of the screw groove is transferred to another member, and the surface shape of the transferred member is transferred to another cylindrical base material to transfer It is a manufacturing method of the locking screw which rolls an external thread.
  • the locking screw manufactured by the manufacturing method is used as a first master, and the shape of the screw groove is transferred to the first flat member, and the surface shape of the transferred member is the second master. And transfer the external thread to the second master, transfer the screw groove of the second master to a second flat member, and The bolt having the male screw is rolled from a flat plate member of 2.
  • the lead angle of the screw groove is formed in a wave shape which is changed at the fixed cycle with respect to the average lead angle, and then the screw groove of the flat member is removed.
  • It is a manufacturing method of the locking screw which pressure-fits the side of a cylindrical base material which forms an external thread, and rolls the external thread on the side of the base.
  • the screw locking function can be effectively and reliably exhibited with a simple structure and without using special parts, and it is easy to manufacture and mass-produce. It is possible and inexpensive.
  • FIG. 5 is a cross-sectional view taken along the line BB in FIG. 4;
  • FIG. 5 is a cross-sectional view taken along the line CC in FIG. 4;
  • FIG. 5 is a cross-sectional view taken along a line DD in FIG.
  • FIG. 6 is a cross-sectional view showing a cross section of the locking screw of this embodiment taken along the bottom of the screw; It is a fragmentary sectional view showing the screwing state of the bolt of a locking screw of this embodiment, and a nut. It is a fragmentary sectional view showing the screwing state in other positions of the bolt of a locking screw of this embodiment, and a nut.
  • the locking screw of this embodiment is an external thread 12 formed on a bolt 10. As shown in FIG. 1, the bolt 10 holds and fixes the fixing member 16 between the nut 14 and the head portion 11 of the bolt 10 in the same manner as a normal bolt.
  • the male screw 12 advances in the axial direction only by the lead L in one rotation of the bolt 10, and is orthogonal to the axial direction of the male screw 12 of the bolt 10 of the outer diameter D as shown in FIGS.
  • the inclination angle of the spiral winding 12a of the male screw 12 with respect to the surface is the lead angle ⁇ .
  • the thread 18 is formed in a wave shape in the axial direction at a constant cycle, and the wave of the wave thread 18 is formed. Is formed of a continuous periodic wavy curve such as a sine curve.
  • the wave period of the thread 18 is 90 ° with respect to 360 ° of one rotation of the male screw 12, and the screw 18 has a wave shape of the wavelength W in four cycles during one round of the circumferential surface of the male screw 12. It is formed.
  • the lead angle ⁇ (> 0) during one cycle of the undulating thread 18 is, as shown in FIG. 3 (b), maximum variation ⁇ with respect to the average lead angle ⁇ ave (> 0) of the male screw 12
  • the nut 14 is 360.degree. There appears a location where pressure contact and deformation occur periodically in the interval between In this embodiment, since one wavelength W of the wave of the screw thread 18 has a period of 90 °, this pressure-contacting portion is formed between the circumferential surfaces 360 ° of the threaded portion of the male screw 12 and the nut 14. Waves are formed. Therefore, eight pressure contact parts are formed in the plus and minus directions in the screw advancing direction.
  • the external thread 12 and the nut 14 of the bolt 12 are screw threads 18 of the external thread 12 at a portion where the lead angle is the largest and a portion where the lead angle is the smallest on the waved circumferential surface in a state where no load is exerted by tightening.
  • the pressure is exerted strongly, and the threads 18 of each of the male screw 12 and the nut 14 are displaced relative to each other to be elastically deformed and pressure-welded.
  • the central thread 18 portion equal to the average lead angle ⁇ ave of the lead angle ⁇ which changes in a wavelike manner, the same contact state as the normal screw is achieved.
  • the valley line 21 of the valley bottom of the thread groove 20 is in the radial direction of the cross section of the male screw 12 with respect to the spiral direction Y of the thread 18. , And has a wave form with a constant cycle wavelength m and an amplitude in the thread direction.
  • the flanks 22 of the thread 18 of the male screw 12 are valley lines 21 at the bottom of the thread groove 20, and the value of the angle of the valley angle ⁇ formed by the adjacent bottom flanks 22a and the top of the thread 18 In the vicinity of 18a, the values of the angle of the screw tip angle ⁇ formed by the top flanks 22b facing each other in the screw groove 20 are different.
  • the angle of the screw tip angle ⁇ is slightly larger than the angle of the valley angle ⁇ , and the difference between the values is more than 0 ° and not more than 10 °.
  • the standard angle formed by the flanks 22 of the thread groove 20 is ⁇
  • the value of ⁇ is at most 10 °, preferably 1 ° to 5 °, and is appropriately set according to the application of the screw.
  • flanks 22 of the thread 18 are discontinuous from the bottom flank 22a, which is the surface on the valley line 21 side of the thread groove 20, and the top flank 22b, which is the surface on the top 18a of the thread 18. is there. Therefore, a flank boundary 24 is formed at the boundary between the discontinuous bottom flank 22a and the top flank 22b.
  • the edge of the cross section of the top flank 22b along the spiral direction Y is formed in a straight line when developed along the spiral direction Y. That is, as shown in FIG. 6, the end of the cross section in the spiral direction Y connecting the apex c on the top 18a side of the flank boundary 24 is formed in a straight line.
  • FIG. 6 the end of the cross section in the spiral direction Y connecting the apex c on the top 18a side of the flank boundary 24 is formed in a straight line.
  • the end of the cross section in the spiral direction Y connecting the vertex d on the valley line 21 side of the flank boundary line 24 becomes a curve that repeats unevenness periodically at the wavelength m.
  • the flank boundary line 24 is formed on the flank surface 22 of the thread 18 so as to draw a wave in the vertical direction along the spiral direction Y at a wavelength m of a fixed cycle.
  • the thread 18 of the male screw 12 is such that the depth of the valley bottom changes at the wavelength m of the period with the same phase as the waveform of the flank boundary line 24 and the height direction of the thread 18 of the wave of the valley line 21
  • the amplitude h of the light is very small compared to the wavelength m, as shown in FIG.
  • flank boundaries 24 opposed to each other in the screw groove 20 are formed symmetrically about the valley line 21 of the valley bottom.
  • the wave shapes of the flank boundaries 24 located on both sides of the top 18 a of the thread 18 are formed symmetrically about the top 18 a.
  • the wave shapes of the flank boundaries 24 located on both sides of the top 18 a of the screw thread 18 may not be symmetrical, and the phases of the wave shapes may be different.
  • the flank boundary line 24 forms a plurality of waves of wavelength m in the lead of one pitch of the male screw 12.
  • the wavelength m corresponds to the wavelength W of the wave in the spiral direction Y of the male screw 12.
  • And is formed at a wavelength of 1/4. Therefore, in the lead of one pitch of the male screw 12, 16 waves of wavelength m are formed.
  • the tip angle is in the vicinity of the top 18 a of the thread 18 of the male screw 12 to be manufactured
  • a conical first rotary tool 30 having an apex angle equal to the angle of the screw tip angle ⁇ formed by the top flanks 22b facing each other in the screw groove 20 is abutted, and the first rotary tool 30 is rotated,
  • the first rotary tool 30 is moved relative to the base 26 in a helical manner at a lead angle ⁇ of the male screw 12 and at a constant radius along the circumference, and the side of the base 26 is cut.
  • the screw groove 20 is formed in a spiral shape at the lead angle ⁇ of the male screw 12 at the depth of the screw groove 20 on the side surface 32 of the base 26.
  • the conical second rotary tool 34 which is the apex angle of the valley angle ⁇ smaller than the screw tip angle ⁇ , is brought into contact with the valley bottom of the screw groove 20, and the second rotary tool 34
  • the valley bottom of the thread groove 20 is cut along a relatively spiral movement at a lead angle ⁇ of the male screw 12.
  • the second rotary tool 34 is reciprocated in the radial direction of the male screw 12 toward the central axis of the male screw 12 in a predetermined cycle.
  • a groove having a valley angle ⁇ is formed on the bottom side of the screw groove 20 at an angle smaller than the angle of the screw tip angle ⁇ of the screw groove 20.
  • the bottom side flank surface 22a on the valley bottom side of the screw groove 20 and the top side flank surface 22b on the top 18a side of the thread 18 are formed as discontinuous surfaces and are boundaries of the discontinuous surfaces.
  • a flank boundary 24 is formed in the helical direction Y along the flank 22 at a constant period of wavelength m.
  • the lead angle ⁇ of the male screw 12 is maximum variation ⁇ ⁇ with respect to the average lead angle ⁇ ave (> 0).
  • the first rotary tool 30 may be formed in a wave shape of the wavelength W while changing in the direction of the longitudinal central axis of the male screw 12. At this time, also when the valley angle ⁇ is formed by the second rotary tool 34, the lead angle ⁇ is changed at the wavelength W by the maximum change amount ⁇ ⁇ .
  • the screw thread 18 is formed in a wave shape in which the lead angle ⁇ of the male screw 12 changes by ⁇ ⁇ and the wavelength W, and the flank surface 22 of the screw groove 20 is in the height direction of the screw thread 18, In the depth direction of 20, it is possible to form an external thread 12 that changes periodically at wavelength m.
  • the flank surface 22 has a wave-like lead angle without forming the flank boundary line 24. It may be used as a bolt.
  • the base 26 of the bolt 10 is moved relative to the base 26 of the bolt 10 in a spiral relative to the lead angle ⁇ of the male screw 12.
  • the screw groove 20 may be formed first.
  • a waveform of a predetermined cycle in the depth direction of the screw groove 20 Form the valley line 21 and form a groove with a valley angle ⁇ .
  • the first rotary tool 30 moves the spiral groove relatively at the lead angle ⁇ in the screw groove 20 of the male screw 12 to form only the top side flank surface 22 b with the screw tip angle ⁇ good.
  • the screw thread 18 may be formed in a wave shape in which the lead angle ⁇ changes by ⁇ ⁇ and the wavelength W, and depending on the application, the screw groove 20 is formed in the base 26 of the bolt 10 with the second rotary tool 34 In this state, the flank surface 22 may be used as a bolt having a wavy lead angle without forming the flank boundary line 24.
  • the bottom flank 22a and the top flank 22b of the thread 18 are formed in a discontinuous surface, and the flank boundary 24 of the boundary of the discontinuous surface has a wave shape of wavelength m.
  • the flank boundary line 24 is more strongly in pressure contact with the thread 38 of the nut 14 than the other portions. That is, the thread 38 of the nut 14 with which the flank boundary line 24 is in pressure contact is the position where the maximum pressure contact force is applied. The position at which the maximum pressure contact force acts changes periodically in the height direction of the screw thread 38 at the wavelength m, and the bolt 10 and the nut 14 are screwed together.
  • the balance of the force applied to the thread 18 of the external thread 12 of the bolt 10 can be divided into the force in the direction perpendicular to the force in the direction of contacting the flank boundary line 24 of the boundary.
  • the pressure contact force between the bolt 10 and the screw of the nut 14 as a whole is less likely to loosen and the pressure contact state can be reliably maintained.
  • the male screw 12 as a master is formed on a cylindrical base material of metal harder than a normal bolt.
  • the master male screw 12 is transferred to a flat die plate (not shown) used for mass production of the bolt 10.
  • the wavelike screw thread 18 of the above embodiment is rolled on the side surface of the bolt for mass production.
  • the male screw of the locking screw manufactured by the above manufacturing method is used as a first master, and the shape of the screw groove is transferred to the first flat plate member, and the surface shape of the transferred member is a second shape.
  • Transfer to a cylindrical base material to be a master form the male screw 12 on the second master, transfer the screw groove of the second master to the second flat plate member, and this second flat plate shape
  • the component 10 may be used to roll a bolt 10 which is a mass-produced product.
  • the screw groove may be formed by the screw thread directly on the flat die plate by electric discharge machining, cutting, etc., and the male screw 12 as a master may be formed by rolling based on this, as it is You may roll a bolt for mass production.
  • the bolt 10 of the locking screw is formed on the flanks 22 of the thread 18 of the external thread 12 so as to form a bottom flank 22a and a top flank 22b, which are discontinuous faces with slightly different flank angles.
  • the wavelike flank boundary 24 is formed at the boundary.
  • the lead angle ⁇ so as to change at the wavelength W of a constant cycle, as shown in FIGS. 11 and 12, in the state where the bolt 10 and the nut 14 are screwed together, each other's threads 18, 38 There are partially different forces acting, causing elastic deformation and pressure welding.
  • the thread 18 of the bolt 10 is pressed against the thread 38 of the nut 14 more strongly periodically, and the thread 18 is elastically deformed.
  • the nut 14 used here may be a screw nut in general, and there is no need to use a nut of a special structure, the cost can be reduced at low cost.
  • the wavelength of the wave formed in the screw thread 18 can be suitably set other than the said embodiment.
  • the wave periods of the wave of wavelength m and the wave of wavelength W may be multiples of 3 in one round of the screw other than 22.5 ° and 90 °.
  • the values of the maximum lead angle and the minimum lead angle may be appropriately set according to the application and performance of the screw, and the screw may be applied to a multi-threaded screw other than a single-threaded screw. is there.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

L'invention concerne : une vis de blocage à faible coût qui, avec une configuration simple, présente de manière fiable une fonction de blocage d'écrou ; et un procédé de fabrication de la vis. Les surfaces de flanc (22) d'un filetage (18) d'une vis mâle (10) sont conçues de telle sorte qu'un angle γ d'un angle de filetage, qui est l'angle formé par des surfaces de flanc (22) adjacentes l'une à l'autre sur le côté racine d'une rainure de vis (20), et un angle δ d'un angle de pointe de vis, qui est l'angle formé par des surfaces de flanc (22) qui se font face dans la rainure de vis (20) dans un côté crête (18a) du filetage (18) de vis, sont différents l'un de l'autre. L'angle δ de l'angle de pointe de vis est plus grand que l'angle γ de l'angle de filetage. Chaque surface de flanc (22) du filetage (18) de vis est conçue de telle sorte qu'une surface de flanc côté racine (22a), qui est la surface sur le côté racine de la rainure de vis (20), et une surface de flanc côté crête (22b), qui est la surface sur le côté crête (18a) du filetage (18), ne sont pas continues. Des lignes de bord de flanc (24), qui sont les bordures entre les surfaces de flanc côté racine (22a) non continues et des surfaces de flanc côté crête (22b), sont formées selon une forme ondulée dans les surfaces de flanc (22) au niveau de cycles prescrits.
PCT/JP2017/030883 2017-08-29 2017-08-29 Vis de blocage et son procédé de fabrication Ceased WO2019043775A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/030883 WO2019043775A1 (fr) 2017-08-29 2017-08-29 Vis de blocage et son procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/030883 WO2019043775A1 (fr) 2017-08-29 2017-08-29 Vis de blocage et son procédé de fabrication

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WO2019043775A1 true WO2019043775A1 (fr) 2019-03-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11420021B2 (en) 2016-03-25 2022-08-23 Project Moray, Inc. Fluid-actuated displacement for catheters, continuum manipulators, and other uses
TWI867730B (zh) * 2023-09-05 2024-12-21 何人東 螺絲

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11254072A (ja) * 1998-03-11 1999-09-21 Osg Corp 右，左ねじの転造方法
JP2002137035A (ja) * 2000-10-26 2002-05-14 Nissee:Kk 可変リード転造方法
JP2006218492A (ja) * 2005-02-09 2006-08-24 Toyota Motor Corp 転造ダイス
JP2009097721A (ja) * 2007-09-28 2009-05-07 Nitto Seiko Co Ltd ねじ部品におけるねじ山
JP5496655B2 (ja) * 2007-03-14 2014-05-21 株式会社転造技術研究所 多重ねじ転造ダイスの製造方法および多重ねじ転造ダイスならびにこれを用いた多重ねじボルトの製造方法
JP5729697B1 (ja) * 2014-04-24 2015-06-03 芳隆 秋野 緩み止めネジ
JP5759193B2 (ja) * 2011-02-03 2015-08-05 グンゼ株式会社 ネジ加工システムおよびその加工方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11254072A (ja) * 1998-03-11 1999-09-21 Osg Corp 右，左ねじの転造方法
JP2002137035A (ja) * 2000-10-26 2002-05-14 Nissee:Kk 可変リード転造方法
JP2006218492A (ja) * 2005-02-09 2006-08-24 Toyota Motor Corp 転造ダイス
JP5496655B2 (ja) * 2007-03-14 2014-05-21 株式会社転造技術研究所 多重ねじ転造ダイスの製造方法および多重ねじ転造ダイスならびにこれを用いた多重ねじボルトの製造方法
JP2009097721A (ja) * 2007-09-28 2009-05-07 Nitto Seiko Co Ltd ねじ部品におけるねじ山
JP5759193B2 (ja) * 2011-02-03 2015-08-05 グンゼ株式会社 ネジ加工システムおよびその加工方法
JP5729697B1 (ja) * 2014-04-24 2015-06-03 芳隆 秋野 緩み止めネジ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11420021B2 (en) 2016-03-25 2022-08-23 Project Moray, Inc. Fluid-actuated displacement for catheters, continuum manipulators, and other uses
TWI867730B (zh) * 2023-09-05 2024-12-21 何人東 螺絲

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