WO2016136750A1 - Écrou de vis à billes et procédé de fabrication correspondant - Google Patents

Écrou de vis à billes et procédé de fabrication correspondant Download PDF

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Publication number
WO2016136750A1
WO2016136750A1 PCT/JP2016/055276 JP2016055276W WO2016136750A1 WO 2016136750 A1 WO2016136750 A1 WO 2016136750A1 JP 2016055276 W JP2016055276 W JP 2016055276W WO 2016136750 A1 WO2016136750 A1 WO 2016136750A1
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WO
WIPO (PCT)
Prior art keywords
ball screw
screw nut
coil material
sleeve
wire
Prior art date
Application number
PCT/JP2016/055276
Other languages
English (en)
Japanese (ja)
Inventor
辰徳 清水
Original Assignee
Ntn株式会社
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
Priority claimed from JP2016010494A external-priority patent/JP2016156499A/ja
Application filed by Ntn株式会社 filed Critical Ntn株式会社
Publication of WO2016136750A1 publication Critical patent/WO2016136750A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B21F3/02—Coiling wire into particular forms helically
    • 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
    • B21H3/08—Making helical bodies or bodies having parts of helical shape internal screw-threads
    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts

Definitions

  • the present invention relates to a ball screw nut formed in a spiral ball rolling groove used for an electric power steering device, an electric actuator and the like of an automobile, and a method of manufacturing the ball screw nut.
  • the ball screw is composed of a ball screw shaft having a spiral ball rolling groove formed on the outer periphery, a ball screw nut having a spiral ball rolling groove formed in a cylindrical surface, and corresponding both ball rolling grooves. It is a mechanical element that is composed of a large number of balls that are rotatably accommodated in a configured ball rolling path, and that converts the rotation of the ball screw shaft or the ball screw nut into a translational motion in the axial direction.
  • this ball screw nut generally has a ball rolling groove formed on the inner periphery by cutting and grinding. That is, a pilot hole is drilled in the material using a drill, and a spiral ball rolling groove is cut on the peripheral surface of the pilot hole with a cutting tool. Next, after heat treatment such as carburizing and quenching is performed, the outer diameter portion is ground with a cylindrical grinder or the like, and finally the surface of the ball rolling groove cut with a grindstone is ground.
  • the ball screw nut 50 has a substantially cylindrical shape, and has a flange 50a at one end thereof for coupling to a conveying machine or the like.
  • a ball rolling groove 50c on which a ball (not shown) rolls is formed on the inner peripheral surface of the ball screw nut 50, and a flat surface portion 50b is formed on the outer peripheral surface.
  • a member such as a return pipe that connects one end and the other end of the ball rolling groove 50c is coupled to the flat surface portion 50b.
  • the ball rolling groove 50c is formed into a gothic arc groove or the like that combines two arcs having a radius of curvature slightly larger than the radius of the ball by rolling.
  • the ball screw nut 50 is manufactured by a process as shown in FIG. First, the outer periphery of the cylindrical material 51 is cut using a cutting tool 52, a flange 51a is formed on the material 51 (S1), and a pilot hole 51b is formed on the material 51 using a drill 53 (S2). Next, using the boring tool 54, the lower hole 51b is spread to a normal size (S3), and then the raw material 51 is rotated at a low speed of 100 to 200 rpm, and the rolling tap 55 is inserted into the lower hole 51b. The ball rolling groove 51c is rolled on the inner peripheral surface of 51 (S4). In this way, the surface of the ball rolling groove 51c is burnished.
  • the end mill 56 is used to groove the return portion 51 d for circulating the ball through the material 51. Then, using the cutting tool 52, the outer periphery of the material 51 is cut to finish the outer peripheral surface (S5). Finally, the rolling tap 55 is again passed through the ball rolling groove 51c of the material 51, and the ball rolling groove 51c is deburred.
  • the ball rolling groove 51c is formed on the inner peripheral surface of the material 51 in the rolling process (S4), a grinding process for grinding the ball rolling groove using a conventional grindstone is not necessary, Even with a small-diameter ball screw nut, the ball rolling groove 51c can be easily processed. For this reason, since the processing cost of the ball rolling groove 51c can be reduced and the number of processing steps can be reduced, the lead time can be shortened (see, for example, Patent Document 1).
  • the ball screw device 57 includes a ball screw nut 58, a ball screw shaft 59, and a large number of ball rolling elements 60.
  • the ball screw nut 58 is a coil spring in which a wire rod having a cross-sectional shape suitable for the inner hole to become the ball rolling groove 58a is wound in a coil shape with close contact, and the ball rolling race 61 is formed into a cylindrical shape.
  • Ball rolling grooves 58a are formed in the inner holes of the ball rolling races 61 along the joining portions of the wires.
  • the cross-sectional shape of these ball rolling grooves 58a is a shape in which two circular arcs are continuous. There is no.
  • a substantially cylindrical outer holding member 62 made of synthetic resin is integrally formed outside the ball rolling race 61, and a return passage 63 parallel to the central axis is formed on the outer periphery of the outer holding member 62. Further, end caps 64 are fixed to both end faces, and guide grooves 65 that communicate the ball rolling grooves 58 a and the return passages 63 are formed in the end caps 64. Thereby, a ball screw can be obtained in large quantities and inexpensively with a simple structure (for example, refer patent document 2).
  • JP 2000-88072 A Japanese Patent Laid-Open No. 9-4690
  • a wire having a cross-sectional shape suitable for forming the ball rolling groove 58a is brought into close contact with each other and wound in a coil shape, and is substantially made of a synthetic resin on the outside of the ball rolling race 61. Since the cylindrical outer holding member 62 is integrally formed by injection molding, there is a limit in ensuring accuracy such as the concentricity of the ball rolling groove 58a, and the ball rolling groove 58a is affected by the thermal effect during injection molding. There was a risk that the surface hardness of the steel would decrease.
  • the present invention has been made in view of such circumstances.
  • the wire is coiled in a spiral shape, and a concave groove between the wire and the wire is rolled to form a thread groove (ball rolling groove).
  • the invention described in claim 1 of the present invention is a ball screw nut in which a spiral thread groove on which a large number of balls roll on an inner peripheral surface is formed.
  • the coil material is formed by winding a wire, and the spiral thread groove is formed on the inner periphery, and a sleeve that accommodates the coil material, and the sleeve is formed in a cylindrical shape from a thin steel plate, Extending radially inward at both ends and integrally provided with hooks for fixing the coil material so as not to move in the axial direction, the thread groove is formed between adjacent wire members of the coil material, and the surface of the thread groove is rolled. Constructed from surface construction.
  • the ball screw nut in which a spiral thread groove in which a large number of balls roll on the inner peripheral surface is formed, the ball screw nut is formed by winding a wire, and the spiral thread groove on the inner periphery It is composed of a coil material formed with a sleeve that accommodates this coil material, and this sleeve is formed in a cylindrical shape from a thin steel plate, extends radially inward at both ends, and fixes the coil material so that it cannot move in the axial direction.
  • a thread groove is formed between adjacent wires of the coil material, and the surface of the thread groove is formed by a rolling surface, so that the processing stress in the rolling process of the nut can be suppressed.
  • Ball screw nuts that can form high-precision screw grooves such as concentricity and groove shape, and can eliminate rough machining and grinding of expensive screw grooves, thus reducing costs. Can provide That.
  • the coil material is formed of a hard steel wire
  • a desired surface hardness can be easily obtained by heat treatment.
  • the sleeve is formed of case-hardened steel or medium-high carbon steel, a desired surface hardness can be easily obtained by heat treatment.
  • the method invention according to claim 4 of the present invention is a ball screw nut manufacturing method in which a spiral screw groove on which a large number of balls roll on an inner peripheral surface is formed.
  • a coil material is formed by coiling molding in which a wire is spirally wound, and a sleeve in which the coil material is fitted is formed by pressing a thin steel plate into a cylindrical portion and one end portion of the cylindrical portion in a radial direction.
  • a step of forming an inwardly extending flange, and the other end portion of the sleeve is in contact with the flange in a state where the wire material of the coil material is in close contact, and the coil material is restrained from moving in the axial direction.
  • a step of forming a ridge by edge bending a fixed die is inserted into the inner diameter of the coil material, and an outer diameter surface of the sleeve is constrained by a roll die, and the roll die and the fixed die With the nut held in the radial direction, the fixed die is pressed against the concave groove formed between the wire rods of the coil material, the roll die is moved in the radial direction and pressurized, and the thread groove is rolled. And a step in which the nut is subjected to heat treatment and hardened.
  • the ball screw nut in which a spiral screw groove on which a large number of balls roll is formed on the inner peripheral surface, the ball screw nut is coiled by coiling molding in which a wire is wound spirally.
  • a step in which a sleeve into which the coil material is fitted is formed by pressing a thin steel plate into a cylindrical portion and a flange extending radially inward at one end of the cylindrical portion, and the coil material The other end of the sleeve is fixed to the inner diameter of the coil material while the other end of the sleeve is bent by edge bending while the coil material is in close contact with the collar and the movement of the coil material is restricted in the axial direction.
  • the outer diameter surface of the sleeve is constrained by the roll die, and the nut is fixed between the roll die and the fixing die in the radial direction, and fixed to the concave groove formed between the wire members of the coil material.
  • the fixed die can be pressed into the groove to be formed and rolled to reduce the processing force of the fixed die, and the fixed die can be miniaturized and can be used with a small-diameter nut, Since the processing stress in the rolling process of the nut can be suppressed, highly accurate thread grooves such as concentricity and groove shape can be formed. Further, it is possible to omit the rough machining and grinding of the high-cost screw groove, and it is possible to provide a ball screw nut that achieves cost reduction.
  • the sleeve is formed into a cup shape by pressing from a thin steel plate, the inner peripheral surface is ironed, and the bottom is punched to form the one flange. If formed, the inner peripheral surface can be smoothed, and the accuracy can be improved at low cost.
  • the processing force during rolling is reduced. Further reduction can be achieved, and the accuracy of the thread groove can be further improved.
  • the ball screw nut according to the present invention is a ball screw nut in which a spiral screw groove on which a large number of balls roll is formed on an inner peripheral surface, wherein the ball screw nut is formed by winding a wire, A coil material in which the spiral thread groove is formed, and a sleeve that accommodates the coil material.
  • the sleeve is formed in a cylindrical shape from a thin steel plate and extends radially inward at both ends.
  • the screw groove is formed between the adjacent wire rods of the coil material, and the surface of the screw groove is formed of a rolling surface,
  • the processing stress in the rolling process can be reduced, high-precision screw grooves such as concentricity and groove shape can be formed, and high-cost rough and grinding of screw grooves can be omitted. Reduce costs It is possible to provide a ball screw nut that Tsu.
  • the ball screw nut manufacturing method is a ball screw nut manufacturing method in which a spiral screw groove on which a large number of balls roll on an inner peripheral surface is formed.
  • a step of forming a coil material by coiling forming that is spirally wound, and a sleeve in which the coil material is fitted are formed by pressing a thin steel plate into a cylindrical portion and one end portion of the cylindrical portion inward in the radial direction. And the other end of the sleeve is edge bent in a state in which the coil material is in a state of being restrained from moving in the axial direction.
  • a step of forming a flange by processing a fixed die is inserted into the inner diameter of the coil material, and an outer diameter surface of the sleeve is constrained by a roll die, and the roll die and the fixed die With the nut clamped in the radial direction, the fixed die is pressed against the concave groove formed between the wire rods of the coil material, the roll die is moved in the radial direction and pressurized, and the thread groove is rolled. And the step of heat-treating the nut and hardening it so that the fixed die is pressed by pressing the fixed die into the concave groove formed between the adjacent wires, and the fixed die is processed.
  • the force can be reduced, the fixed die can be downsized, and even small diameter nuts can be handled, and the processing stress in the rolling process of the nut can be reduced, so concentricity and groove shape For example, a highly accurate thread groove can be formed. Further, it is possible to omit the rough machining and grinding of the high-cost screw groove, and it is possible to provide a ball screw nut that achieves cost reduction.
  • FIG. 1 It is a longitudinal section showing one embodiment of a ball screw concerning the present invention.
  • the manufacturing process of the ball screw nut which concerns on this invention is shown, (a) is explanatory drawing which shows a coiling shaping
  • the manufacturing process of the ball screw nut which concerns on this invention is shown, (a) is explanatory drawing which shows the crimping process of a sleeve, (b) is explanatory drawing which shows the process of rolling the coil material of (a). is there.
  • It is a principal part enlarged view which shows the thread groove part of the ball screw nut which concerns on this invention.
  • a ball screw nut in which a spiral thread groove on which a large number of balls roll on an inner peripheral surface is formed.
  • the ball screw nut is formed by winding a hard steel wire, and the spiral thread groove is formed on an inner periphery. Is formed from a thin steel plate made of case-hardened steel by pressing, and extends radially inward at both ends.
  • a gutter for fixing the coil material so as not to move in the axial direction is integrally provided, and the thread groove is formed by rolling between adjacent wire materials of the coil material.
  • FIG. 1 is a longitudinal sectional view showing an embodiment of a ball screw according to the present invention
  • FIG. 2 shows a manufacturing process of a ball screw nut according to the present invention
  • (a) is an explanatory view showing a coiling molding process
  • (B) is explanatory drawing which shows the process of inserting the coil material of (a) into a sleeve
  • FIG. 3 shows the manufacturing process of the ball screw nut which concerns on this invention
  • (a) shows the crimping process of a sleeve.
  • FIG. 4B is an explanatory view showing a process of rolling the coil material of FIG. 4A
  • FIG. 4 is an enlarged view of a main part showing a thread groove portion of a ball screw nut according to the present invention
  • FIG. The manufacturing process of the ball screw nut which concerns on this invention is shown
  • (a) is explanatory drawing which shows the pre-process of the rolling process of a nut
  • (c) is the post process of the nut of (b). It is explanatory drawing shown.
  • the ball screw 1 includes a nut 2 having a spiral thread groove 2a formed on an inner peripheral surface thereof, and a spiral thread groove 3a inserted in the nut 2 and corresponding to the screw groove 2a of the nut 2 on the outer peripheral surface. , A plurality of balls 4 accommodated in a rolling path formed by the opposing screw grooves 2a and 3a, and a circulation member (not shown) for these balls 4. Yes.
  • each thread groove 2a, 3a may be a circular arc shape or a Gothic arc shape, but here, it has a Gothic arc shape that allows a large contact angle with the ball 4 and a small axial clearance. Is formed. Thereby, the rigidity with respect to an axial load becomes high and generation
  • the nut 2 includes a coil material 5 having a spiral thread groove 2a formed on the inner periphery and a sleeve 6 that accommodates the coil material 5.
  • the coil material 5 is made of, for example, a chromium molybdenum steel wire (JIS standard SCM435 system) or a hard steel wire (JIS standard SW-C system), and is formed by coiling in a spiral shape.
  • the material of the coil material 5 is not limited to the exemplified chromium molybdenum steel wire or hard steel wire, but may be a stainless steel wire such as SUS-WR.
  • the sleeve 6 is formed into a cylindrical shape by press working (drawing) from a thin steel plate made of case-hardened steel such as SCM415 or SCM420, and is integrally provided with flanges 6a and 6b that fix the coil material 5 so that it cannot move in the axial direction at both ends. ing.
  • the material of the sleeve 6 can be exemplified by medium and high carbon steel such as S55C and tool steel such as SK5.
  • FIG. 2 shows a manufacturing process of the nut 2 in the embodiment of the present invention.
  • a coil material 7 having a predetermined number of turns is formed by coiling molding in which a wire 7a having a circular cross section is wound spirally.
  • the coil material 7 is fitted into a sleeve 8 formed into a cylindrical shape by pressing from a thin steel plate.
  • the sleeve 8 includes a cylindrical portion 8a and a flange 8b that extends radially inward at one end of the cylindrical portion 8a. Note that the inner diameter of the cylindrical portion 8 a is slightly smaller than the outer diameter of the coil material 7 in the free state.
  • the sleeve 8 is formed into a cup shape by press working from a thin steel plate, subjected to ironing processing for smoothing the inner peripheral surface and trimming processing for trimming the end portion, and punching the bottom portion of the cup-shaped sleeve.
  • a ridge 6a is formed.
  • the other end portion of the sleeve 8 is brought into contact with the flange 6a in a state in which the wire 7a of the coil material 7 is in close contact, and the coil material 7 is restrained from moving in the axial direction.
  • the flange 6b is formed by edge bending.
  • a fixed die (mandrel) serving as a rolling jig is inserted into the inner diameter of the coil material 7 described later, and the outer diameter surface of the sleeve 6 is restrained by a roll die.
  • the fixed die With the nut 2 held between the roll die and the fixed die in the radial direction, the fixed die is pressed against the concave groove 9 formed between the wire rods 7a, 7a, the roll die is moved in the radial direction and pressurized, and the thread groove 2a is rolled.
  • a circulation member for example, a piece window of the piece member is formed in the nut 2 and heat treatment such as carburizing and quenching is performed, and a hardening treatment is performed so that the surface hardness is in a range of 42 to 50 HRC. Is done.
  • the outer diameter surface of the wire 5a becomes a flat surface 10 corresponding to the inner diameter surface of the sleeve 6 as shown in FIG. 4, and the adhesion and stability to the sleeve 6 are further increased.
  • the inner diameter surface has a desired Gothic arc shape corresponding to the shape of the fixed die, that is, a thread groove 2a having two curvature centers having a radius of curvature set slightly larger than the radius of the ball 4. It is formed.
  • the rolling process of the nut 2 thread groove 2a will be described with reference to FIG.
  • the fixed die Mn is inserted, and the outer diameter surface of the sleeve 6 is constrained by the roll die Rd, and the nut is formed by the roll die Rd and the fixed die Mn. 2 is held in the radial direction.
  • the fixed die Mn is pressed against the concave groove 9 formed between the wires 7a and 7a, and the roll die Rd is rotated in a certain direction (indicated by an arrow in the figure).
  • the roll die Rd rotates, the sleeve 6 and the coil material 7 are integrally rotated in the opposite direction (indicated by arrows in the figure).
  • the roll die Rd is moved in the radial direction and pressed (indicated by a white arrow in the figure), and the thread groove 2a is rolled into the concave groove 9 between the wire rods 7a and 7a.
  • the spiral ridge 7b is formed on the outer periphery of the fixed die Mn, and the outer peripheral surface of the ridge 7b is formed in a cross-sectional gothic arc shape corresponding to the thread groove 2a.
  • the fixed die Mn is pressed into the concave groove 9 formed between the adjacent wire rods 7a and 7a and is rolled to form the thread groove 2a, thereby reducing the processing force of the fixed die Mn.
  • the fixing die Mn can be reduced in size and can be handled with a small-diameter nut, and the processing stress in the rolling process of the nut 2 can be suppressed, so that the concentricity, groove shape, etc.
  • a highly accurate thread groove 2a can be formed. Furthermore, it is possible to omit the rough machining and grinding of the high-cost thread groove, and it is possible to provide the ball screw nut 2 that achieves cost reduction.
  • the lead angle can be easily set by changing the inclination angle for winding the wire 5a of the coil material 5, and the pitch of the thread groove 2a can be changed by changing the cross-sectional shape / dimension of the wire 5a. It can be easily set, and a desired preload can be applied to the ball screw.
  • pitch refers to the distance between the groove bottoms of the screw grooves.
  • the shape of the wire 7a of the coil material 7 can be further reduced by reducing the working force during rolling by forming the shape of the wire 7a before winding into a rough shape close to the finished shape by drawing.
  • the accuracy of the thread groove 2a can be further improved.
  • the ball screw nut according to the present invention can be applied to a ball screw used for an automatic manual transmission, an electric brake, an electric power steering, and an engine valve system control actuator, which are used particularly for vehicles such as automobiles.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un écrou de vis à billes qui peut être formé avec précision par réduction de la taille d'une matrice à rouleaux et par réduction d'une force de travail même pour ceux ayant un petit diamètre, et qui accomplit une réduction de coûts, et procédé de fabrication correspondant. L'écrou de vis à billes (2) comporte des rainures de filetage en spirale (2a) le long desquelles un grand nombre de billes (4) roulent, formées dans la surface de circonférence interne de celui-ci. L'écrou de vis à billes (2) comporte un élément bobine (5) qui est formé par enroulement d'un fil en acier dur, et dans lequel les rainures de filetage en spirale (2a) sont formées dans la circonférence interne de celui-ci, et un manchon (6) qui reçoit à l'intérieur de celui-ci l'élément bobine (5). Le manchon (6) est formé selon une forme cylindrique par travail à la presse d'une plaque en acier mince qui est formée d'acier cémenté, et comporte d'un seul tenant, aux deux extrémités, des brides (6a, 6b) qui s'étendent radialement vers l'intérieur et qui fixent l'élément bobine (5) de façon à immobiliser l'élément bobine (5) dans la direction axiale. De plus, les rainures de filetage (2a) sont formées chacune entre des éléments de fil attenants de l'élément bobine (5) par laminage. De ce fait, une force de travail dans le laminage de l'écrou (2) peut être diminuée et, ainsi, les rainures de filetage (2a) peuvent être formées avec des rainures hautement précises.
PCT/JP2016/055276 2015-02-24 2016-02-23 Écrou de vis à billes et procédé de fabrication correspondant WO2016136750A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2015034446 2015-02-24
JP2015-034446 2015-02-24
JP2016010494A JP2016156499A (ja) 2015-02-24 2016-01-22 ボールねじナットおよびその製造方法
JP2016-010494 2016-01-22

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WO2016136750A1 true WO2016136750A1 (fr) 2016-09-01

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PCT/JP2016/055276 WO2016136750A1 (fr) 2015-02-24 2016-02-23 Écrou de vis à billes et procédé de fabrication correspondant

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107553141A (zh) * 2017-09-05 2018-01-09 四川鸿舰重型机械制造有限责任公司 全自动多规格挤压滚圆磨球生产线
CN112313430A (zh) * 2018-04-24 2021-02-02 日本精工株式会社 滚珠丝杠
CN113441911A (zh) * 2021-06-23 2021-09-28 陕西万方汽车零部件有限公司 一种内循环转向螺母一体加工方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000088072A (ja) * 1998-09-11 2000-03-28 Thk Co Ltd ボールねじナット、該ボールねじナットを使用した直線案内装置及びステアリング用ボールねじ並びにボールねじナットの製造方法
JP2002021968A (ja) * 2000-07-05 2002-01-23 Kazuo Chikajima ボールナット及びボールネジ装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000088072A (ja) * 1998-09-11 2000-03-28 Thk Co Ltd ボールねじナット、該ボールねじナットを使用した直線案内装置及びステアリング用ボールねじ並びにボールねじナットの製造方法
JP2002021968A (ja) * 2000-07-05 2002-01-23 Kazuo Chikajima ボールナット及びボールネジ装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107553141A (zh) * 2017-09-05 2018-01-09 四川鸿舰重型机械制造有限责任公司 全自动多规格挤压滚圆磨球生产线
CN112313430A (zh) * 2018-04-24 2021-02-02 日本精工株式会社 滚珠丝杠
CN112313430B (zh) * 2018-04-24 2024-04-05 日本精工株式会社 滚珠丝杠
CN113441911A (zh) * 2021-06-23 2021-09-28 陕西万方汽车零部件有限公司 一种内循环转向螺母一体加工方法

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