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WO2006137198A1 - Procede de fabrication d'element annulaire externe de joint homocinetique - Google Patents

Procede de fabrication d'element annulaire externe de joint homocinetique Download PDF

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Publication number
WO2006137198A1
WO2006137198A1 PCT/JP2006/305881 JP2006305881W WO2006137198A1 WO 2006137198 A1 WO2006137198 A1 WO 2006137198A1 JP 2006305881 W JP2006305881 W JP 2006305881W WO 2006137198 A1 WO2006137198 A1 WO 2006137198A1
Authority
WO
WIPO (PCT)
Prior art keywords
molded body
outer ring
ring member
flat surface
manufacturing
Prior art date
Application number
PCT/JP2006/305881
Other languages
English (en)
Japanese (ja)
Inventor
Yoshihisa Doi
Original Assignee
Honda Motor Co., Ltd.
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 Honda Motor Co., Ltd. filed Critical Honda Motor Co., Ltd.
Priority to US11/922,600 priority Critical patent/US20090133262A1/en
Publication of WO2006137198A1 publication Critical patent/WO2006137198A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49643—Rotary bearing
    • Y10T29/49679—Anti-friction bearing or component thereof
    • Y10T29/49689—Race making

Definitions

  • the present invention relates to an outer ring member for a constant velocity joint that constitutes a constant velocity joint for transmitting rotational driving force, and more specifically, a cup portion and a shaft portion having a plurality of guide grooves on an inner peripheral surface.
  • the present invention relates to a method for manufacturing an outer ring member for a constant velocity joint, in which an outer ring member for a constant velocity joint formed in a body is manufactured by forging.
  • a forging material is loaded into a cavity formed on an upper die and a lower die joined together, and pressure is applied to the forging material via a punch.
  • the outer ring member (outer cup) of the constant velocity joint for driving the wheel is manufactured.
  • the outer ring member includes a cup portion and a shaft portion formed integrally with the cup portion.
  • a plurality of ball rolling grooves extending along the axial direction are formed on the inner peripheral surface of the cup portion so as to be spaced apart at equal angles along the circumferential direction, and the balls are formed along the ball rolling grooves. Is provided to roll.
  • Patent Document 1 discloses that a recess having a semicircular cross section is formed on the upper surface of a cup portion by performing upset molding on a preform. Is disclosed. In this case, in Patent Document 1, it is assumed that by forming a recess having a radial cross section on the upper surface of the cup portion, the plastic fluidity at the time of backward extrusion molding in the next process becomes smooth, and the product completion accuracy can be improved. Yes.
  • Patent Document 2 discloses that a concave hole is formed in the upper surface of the head by subjecting the hot-treatment material having the head and the body to front and rear extrusion. ing.
  • Patent Document 3 discloses forming a concave cave portion by pressing the center portion of the end surface of the large diameter portion.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2002-178090
  • Patent Document 2 JP-A-58-50149
  • Patent Document 3 Japanese Patent Application Laid-Open No. 55-5120
  • a general object of the present invention is to share a part of the work amount in the fourth step with the third step, which is the previous step, to reduce the molding rate in the fourth step of forming the ball rolling groove.
  • Another object of the present invention is to provide a method of manufacturing an outer ring member for a constant velocity joint that can achieve optimum dispersion in each process.
  • the present invention performs the following first to fifth steps.
  • a primary molded body having a shaft portion is formed by subjecting a cylindrical workpiece cut to a predetermined length to forward extrusion molding.
  • the upper surface of the secondary molded body is subjected to pre-indentation molding so that the vertical cross-sectional shape in the axial direction of the bottom wall of the cup portion of the final product is substantially the same.
  • a third molded body is formed in which matching concave portions are formed on the upper surface.
  • the bottom wall of the cup portion is obtained by sharing the third step with the fourth step which is the next step.
  • an R portion having a curved cross section is formed along the circumferential direction at the boundary portion between the upper surface of the head of the third molded body and the opening of the recess, so that the recess It is possible to prevent streaks from occurring around the opening.
  • a ball having a tip formed on the inner wall is formed by subjecting the third molded body to a rear extrusion by using a punch having a tip shape that substantially matches the longitudinal sectional shape of the recess.
  • a fourth molded body having a cup portion provided with rolling grooves is formed.
  • a part of the work of forming the bottom wall of the cup portion in the fourth step is shared with the third step, which is the previous step, to form the ball rolling groove. Process formation rate can be reduced.
  • the deformation amount (elongation of the material) of the forging material is reduced, and the occurrence of material cracking is avoided and good mold transferability is achieved. Can be achieved.
  • FIG. 1 is a flowchart showing a manufacturing process of a constant velocity joint outer ring member according to the present embodiment.
  • FIGS. 2A to 2F are a side view and a partial longitudinal sectional view showing the shape of an outer ring member for a constant velocity joint, which is a finished product by forging a workpiece along the manufacturing process shown in FIG. FIG.
  • FIG. 3 is a longitudinal sectional view along the axial direction of a constant velocity joint outer ring member which is a finished product.
  • FIG. 4 is an arrow view seen from the direction of arrow Z in FIG.
  • FIG. 5 is a partially enlarged side view of the ball rolling groove shown in FIG.
  • FIG. 6 is a partially enlarged side view of an R portion formed at a boundary portion between the concave portion and the upper surface of the third molded body shown in FIG. 2D.
  • the outer ring member 12 is connected to one end portion of a shaft (not shown) and has a bottomed cylindrical cup portion 16 having an opening portion 14, and the cup portion 16. It is basically composed of a shaft part 18 formed integrally.
  • the outer surface of the cup portion 16 adjacent to the connection portion between the cup portion 16 and the shaft portion 18 has a longitudinal section along the axial direction extending from the side peripheral portion 20 substantially parallel to the axis to the shaft portion 18 side.
  • a curved surface portion 22 that is reduced in diameter while being curved in an arcuate shape is formed, and is connected to the shaft portion 18 via an annular stepped portion 24 that continues to the curved surface portion 22 and extends in a direction perpendicular to the axis. It is configured as follows.
  • an inner diameter surface 28 that also has a spherical force bulges toward the center side, and extends along the axial direction between adjacent inner diameter surfaces 28.
  • a plurality of existing ball rolling grooves 30a to 30f are formed around the shaft center at intervals of 60 degrees (see FIGS. 3 and 4).
  • the ball rolling grooves 30a to 30f smoothly roll a ball (not shown), and extend along the inner wall surface of the outer ring member 12 to the vicinity of the end portion on the bottom side of the cup portion 16.
  • each of the ball rolling grooves 30a to 30f has a cross-sectional arc shape having a single radius of curvature when viewed from the axial direction of the outer ring member 12 (the arrow Z direction in FIG. 3). It is formed.
  • a bottom wall 32 (see an imaginary line F1 in FIG. 3) formed at the innermost wall surface of the cup portion 16 of the outer ring member 12 and extending in a direction perpendicular to the axial direction is the cup portion. 16 is set at an intermediate position of the curved surface portion 22 formed on the outer surface, and is set so as to be separated by ⁇ P along the imaginary line F2 of the annular step portion 24 continuous with the curved surface portion 22 along the axial direction ( (See Figure 3).
  • the vertical cross-sectional shape along the axial direction of the bottom wall 32 formed in the cup portion 16 includes a circular flat surface 33 having a diameter D3 in plan view, and from the circular flat surface 33 to the opening. It is constituted by an annular inclined surface 35 having a continuous inclination angle with respect to the circular flat surface 33 of ⁇ 3, and as will be described later, the concave portion 62 of the third molded body 60 and the bottom wall 76 of the fourth molded body 70. Is substantially the same as the vertical cross-sectional shape.
  • the outer ring member 12 is manufactured by the following process.
  • the first preparation step spheroidizing annealing is performed on the workpiece 10 (see FIG. 2A) cut into a cylindrical body (billet) having a predetermined length.
  • the workpiece 10 is softened and the following first to fifth forging processes are facilitated.
  • a chemical conversion coating for lubrication is formed on the workpiece 10.
  • the chemical conversion coating for lubrication should be formed by immersing the workpiece 10 in a solvent in which zinc phosphate or the like is dissolved for a predetermined time.
  • first forging step S1 forward extrusion molding is performed on one end surface of the workpiece 10 on which the chemical conversion coating for lubrication is formed, using a first forging die (not shown).
  • the workpiece 10 is loaded into the cavity of a first forging die (not shown), and one end surface of the workpiece 10 is pressed by a punch (not shown). Along with this, the other end surface side of the workpiece 10 is press-fitted into the cavity, and as a result, as shown in FIG. 2B, a reduced diameter portion 40a and a shaft portion 40b that are reduced in taper shape on the other end surface side are formed.
  • the formed primary molded body 40 is obtained (see FIG. 2B).
  • upsetting is performed on the primary compact 40 in the secondary forging step S2. That is, the primary molded body 40 is loaded into the cavity of a second forging die (not shown). At this time, the shaft portion 40b is inserted into a shaft portion holding portion (not shown) provided in the second forging die.
  • the tip of the shaft portion 40b inserted into the shaft portion holding portion is not shown, and the upper portion of the primary molded body 40 is pressed with a punch while being supported by a pressing member. Crush. Along with this crushing, the upper part is compressed in the vertical direction and expanded in the horizontal direction, whereby a secondary molded body 50 (see FIG. 2C) is obtained.
  • a recess 62 is formed in which the central portion of the upper surface is recessed by a predetermined depth in the axial direction.
  • the recess 62 is a circle having a diameter D1 (see FIG. 2D) in plan view.
  • the predetermined depth T1 (see FIG. 2D) of the recess 62 is such that the circular flat surface 72 and the ball rolling groove formed at the back of the cup portion of the fourth molded body 70 in the next step. It should be set to be less than the separation distance T2 (see Fig. 2E) along the axial direction (vertical direction) with the rear end of 74 ( ⁇ 1 ⁇ 2).
  • the vertical cross-sectional shape of the concave portion 62 constituted by the circular flat surface 64 and the annular inclined surface 66 is a cut in the fourth molded body 70 of the next step.
  • the bottom wall 76 formed in the inner part of the bottom portion is substantially the same as the vertical cross-sectional shape of the bottom wall 76, and the force is substantially the same as the vertical cross-sectional shape along the axial direction of the bottom wall 32 of the outer ring member 12 that is the final product. Configured.
  • an R portion 68 having a non-angular shape and a curved cross section having a predetermined radius of curvature is provided around the boundary portion between the upper surface of the head of the third molded body 60 and the opening of the recess 62. It is formed along the direction (see Fig. 6).
  • step S3 After the third forging step S3 is completed, low temperature annealing to remove stress from the third compact 60, shot blasting to remove oxide scales, etc. generated during this low temperature annealing, bonderite A chemical conversion coating for lubrication having the same strength as zinc phosphate is formed on the outer surface of the tertiary compact 60 by the treatment. By performing these various treatments, the third molded body 60 can be easily plastically deformed.
  • a fourth forging step S4 is performed using a fourth forging die (not shown).
  • the tip shape is substantially the same as the longitudinal sectional shape of the recess 62 of the third molded body 60.
  • a fourth forged body 70 is obtained by performing a fourth forging process using a punch not shown in the figure (see FIG. 2).
  • the vertical cross-sectional shape of the bottom wall 76 formed in the inner part of the cup portion of the fourth molded body 70 includes a circular flat surface 72 having a diameter D2 in plan view, and the circular flat surface.
  • An annular inclined surface 78 that is continuous from the surface 72 to the opening and has an inclination angle of ⁇ 2 with respect to the circular flat surface 72 is substantially the same as the longitudinal sectional shape of the recess 62 of the third molded body 60 as described above. It is the same.
  • the third formed body 60 is performed using a punch (not shown) whose tip shape is substantially the same as the longitudinal sectional shape of the recess 62 of the third formed body 60. Therefore, the circular flat surface 64 constituting the recess 62 becomes a non-plastic flow site, and only the annular inclined surface 66 becomes a plastic flow site and is pushed out rearward of the cup portion.
  • the fifth cold forging step S5 is performed on the fourth compact 70.
  • a liquid lubricant may be applied to at least one of the surface of the fourth compact 70 and the fifth forging die (not shown). Thereby, it is possible to avoid the seizure of the fourth compact 70 or the fifth forging die during the fifth forging / casing step S5.
  • the liquid lubricant a known liquid lubricant that has been used in the past can be used.
  • the force and tip shape are substantially the same as the longitudinal sectional shape of the recess 62 of the third molded body 60 (not shown).
  • ironing final sizing is performed on the inner and outer surfaces of the fourth molded body 70 to finish the cup portion 16 into a final product shape.
  • the thickness of the cup portion 16 and the width and depth of the ball rolling grooves 30a to 30f are processed so as to have a predetermined dimensional accuracy, thereby forming the shapes of the ball rolling grooves 30a to 30f and the like.
  • an outer ring member 12 for a Barfield type constant velocity joint is obtained as a finished product with a dimensional accuracy of the cup portion 16 including (see FIG. 2F).
  • the vertical cross-sectional shape of the bottom wall 32 formed in the inner part of the cup portion 16 of the outer ring member 12 has a circular flat surface 33 having a diameter D3 in plan view and an opening from the circular flat surface 33.
  • a circular flat surface 33 having a diameter D3 in plan view and an opening from the circular flat surface 33.
  • annular inclined surface 35 having an inclination angle of ⁇ 3 with respect to the circular flat surface 33, and is substantially the same as the longitudinal sectional shape of the concave portion 62 of the third molded body 60 and the bottom wall of the fourth molded body 70. It is.
  • the diameters of the circular flat surfaces 64, 72, 33 from the third molded body to the fifth molded body (the outer ring member 12 as the final product) are D1 ⁇ D2 ⁇ D3, and
  • the first forging process S1 to the third forging process S3 are performed by warm forging or hot forging!
  • the fifth forging process S5 may be performed by cold forging.
  • all the steps from the first forging caloing step S1 to the fifth forging step S5 can be performed by cold forging.
  • a part of the work of originally forming the bottom wall of the cup part in the fourth forging step S4 is transferred to the third forging step S3, which is the previous step.
  • the molding rate in the fourth forging step S4 for forming the ball rolling grooves 30a to 30f can be reduced.
  • the deformation amount (elongation of material) of the forging material is reduced, and the occurrence of material cracking is avoided. And good mold transferability can be achieved.
  • the circular flat surface of the recess 62 formed in the third molded body 60 becomes a non-plastic flow site, and the plastic flow site force is removed, so that the fourth forging process is performed.
  • the plastic flow (meat flow) when forming the ball rolling grooves 74 and 30a to 30f becomes smoother, and the ball rolling grooves 74 and 30a to 30f are formed with high accuracy. can do.
  • the ball rolling groove 74 is formed by sharing a part of the work amount in the fourth forging process to the third forging process, which is the previous process. Reduce the forming rate of the fourth forging process to achieve optimal dispersion of each process Can do. As a result, the yield can be improved by suppressing the occurrence of defective products such as material cracks.

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

Abstract

Selon l'invention un produit primaire (40) est formé par extrusion directe d'une pièce d'usinage (10) dans la première phase, et un produit secondaire (50) est réalisé par matriçage dans la deuxième phase. Dans une troisième phase, le pressage préliminaire de la surface supérieure du produit secondaire (50) a pour but d'obtenir un produit tertiaire (60) dans lequel un retrait (62) correspondant généralement à la section longitudinale dans la direction axiale de la paroi inférieure (32) d'une portion en coupelle (16) du produit final est formé dans la surface supérieure. Dans la quatrième phase, un produit quaternaire (70) ayant une portion en coupelle munie d'une rainure de laminage à bille (74) dans la paroi interne est constitué par une extrusion indirecte du produit tertiaire (60) à l'aide d'un poinçon dont la pointe correspond généralement à la section longitudinale du retrait (62). Enfin, dans la cinquième phase, un élément annulaire externe (12) est produit comme produit final par étirage de la portion en coupelle du produit quaternaire (70).
PCT/JP2006/305881 2005-06-21 2006-03-23 Procede de fabrication d'element annulaire externe de joint homocinetique WO2006137198A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/922,600 US20090133262A1 (en) 2005-06-21 2006-03-23 Method for Producing Outer Ring Member of Constant Velocity Universal Joint

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-180629 2005-06-21
JP2005180629A JP2007000873A (ja) 2005-06-21 2005-06-21 等速ジョイント用外輪部材の製造方法

Publications (1)

Publication Number Publication Date
WO2006137198A1 true WO2006137198A1 (fr) 2006-12-28

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PCT/JP2006/305881 WO2006137198A1 (fr) 2005-06-21 2006-03-23 Procede de fabrication d'element annulaire externe de joint homocinetique

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US (1) US20090133262A1 (fr)
JP (1) JP2007000873A (fr)
WO (1) WO2006137198A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014188839A1 (fr) * 2013-05-22 2014-11-27 Ntn株式会社 Procédé permettant de fabriquer un élément formant joint extérieur à des fins d'utilisation dans un joint universel homocinétique, produit forgé intermédiaire destiné à être transformé en un élément formant joint extérieur, et produit forgé final
CN104400364A (zh) * 2014-10-10 2015-03-11 四川华庆机械有限责任公司 一种外星轮的挤压加工方法
CN107443031A (zh) * 2017-07-13 2017-12-08 安徽众鑫科技股份有限公司 一种月牙壳体生产工艺

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DE102007031078B4 (de) * 2006-07-05 2021-02-04 Neumayer Tekfor Engineering Gmbh Kugelgleichlauffestgelenk als Gegenbahngelenk und Verfahren zur Herstellung
JP2010106053A (ja) * 2008-10-28 2010-05-13 Ntn Corp 鍛造加工用潤滑液、温間または熱間鍛造加工方法および等速ジョイント外輪の製造方法
CN102861861A (zh) * 2011-07-06 2013-01-09 张太良 球笼式万向节钟形壳精锻塑性成型工艺
CN103567338B (zh) * 2012-08-06 2016-04-06 富泰华工业（深圳）有限公司 金属件制造方法
CN103707017B (zh) * 2012-10-01 2016-04-20 江苏威鹰机械有限公司 Cvt自动变速箱v型带轮轴精锻塑性成型工艺
KR101514134B1 (ko) * 2013-07-01 2015-04-21 현대위아 주식회사 등속조인트와 이를 제조하는 단조공법
CN103567717B (zh) * 2013-08-31 2016-03-23 浙江欧迪恩传动科技股份有限公司 Bj型等速万向节钟形壳滚道成型工艺及其精整设备
CN104646956B (zh) * 2014-12-29 2017-04-12 宁波正凯机械有限公司 一种球笼钟形壳的加工工艺
CN104972284A (zh) * 2015-07-06 2015-10-14 安徽索特汽车零部件有限公司 一种汽车外球笼生产工艺

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JP2003083358A (ja) * 2001-06-28 2003-03-19 Honda Motor Co Ltd 等速ジョイント用外輪部材およびその製造方法
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JP2002178090A (ja) * 2000-12-15 2002-06-25 Honda Motor Co Ltd 等速ジョイント用外輪部材の成形方法およびその予備成形体
JP2003083358A (ja) * 2001-06-28 2003-03-19 Honda Motor Co Ltd 等速ジョイント用外輪部材およびその製造方法
JP2005152980A (ja) * 2003-11-27 2005-06-16 Honda Motor Co Ltd 等速ジョイント用外輪部材の製造方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014188839A1 (fr) * 2013-05-22 2014-11-27 Ntn株式会社 Procédé permettant de fabriquer un élément formant joint extérieur à des fins d'utilisation dans un joint universel homocinétique, produit forgé intermédiaire destiné à être transformé en un élément formant joint extérieur, et produit forgé final
JP2014228057A (ja) * 2013-05-22 2014-12-08 Ntn株式会社 等速自在継手用外側継手部材の製造方法、並びに外側継手部材に加工される中間鍛造品および最終鍛造品
CN104400364A (zh) * 2014-10-10 2015-03-11 四川华庆机械有限责任公司 一种外星轮的挤压加工方法
CN107443031A (zh) * 2017-07-13 2017-12-08 安徽众鑫科技股份有限公司 一种月牙壳体生产工艺

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JP2007000873A (ja) 2007-01-11
US20090133262A1 (en) 2009-05-28

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