JP2005273755A - Retainer for thrust cylindrical roller bearing and its manufacturing method - Google Patents

Retainer for thrust cylindrical roller bearing and its manufacturing method Download PDF

Info

Publication number
JP2005273755A
JP2005273755A JP2004086978A JP2004086978A JP2005273755A JP 2005273755 A JP2005273755 A JP 2005273755A JP 2004086978 A JP2004086978 A JP 2004086978A JP 2004086978 A JP2004086978 A JP 2004086978A JP 2005273755 A JP2005273755 A JP 2005273755A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
portion
diameter side
step
intermediate
inner
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.)
Granted
Application number
JP2004086978A
Other languages
Japanese (ja)
Other versions
JP4483365B2 (en )
Inventor
Keiichi Horino
Kazuto Kobayashi
Seiji Otsuka
Isao Shindo
慶一 堀野
清司 大塚
一登 小林
功 新藤
Original Assignee
Nsk Ltd
日本精工株式会社
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

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/46Cages for rollers or needles
    • F16C33/54Cages for rollers or needles made from wire, strips, or sheet metal
    • F16C33/542Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
    • F16C33/543Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
    • F16C33/546Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part with a M- or W-shaped cross section
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/30Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
    • F16C19/305Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly consisting of rollers held in a cage

Abstract

PROBLEM TO BE SOLVED: To retain short sized cylindrical rollers and perform a location about the axial direction by means of roller guidance by introducing a structure capable of being built at low cost formed by subjecting one piece of metal plate to a punching process and bending process.
SOLUTION: The intersecting angles of a central flat plate part 8 and flat plate parts 9 and 10 on the outside and the inside with two continued parts 11a, 11b, 12a, 12b on the outside and the inside are all made 90 degs. or less. Therefore, preparatory holes for pockets 5 are processed, and the middle part in radial direction of an intermediate work is processed to generate a curved section shape, and the apex of the curved part is crushed by pushing so that the flat plate parts 8, 9, 10 as mentioned above are generated. According to this constitution, processing to generate the above described shape can be made without applying any unreasonable force to a die for performing the processing.
COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、自動車用変速機、工作機械等、各種機械装置の回転支持部に組み込むスラスト円筒ころ軸受を構成する保持器とその製造方法に関する。 The present invention, automobile transmission, a machine tool or the like, the retainer constituting a thrust cylindrical roller bearing incorporating the rotation support portions of various mechanical devices and a manufacturing method thereof. 具体的には、1枚の金属板に打ち抜き加工及び曲げ加工を施す事により低コストで造れるスラスト円筒ころ軸受用保持器とその製造方法の改良に関し、長さと直径との比が小さい(短寸の)円筒ころの保持が可能な構造とその製造方法とを実現するものである。 Specifically, a metal plate to punching and bending able to build a low cost by applying a thrust cylindrical roller bearing cage with respect to improvement of the manufacturing method, the ratio of length to diameter is small (short dimension in which the) cylindrical roller holding realizes the structure and its manufacturing method capable.

1枚の金属板に打ち抜き加工及び曲げ加工を施す事により低コストで造れるスラスト円筒ころ軸受用保持器とその製造方法として、特許文献1〜3に記載された技術が知られている。 As a thrust cylindrical roller bearing cage that able to build a low cost method of manufacturing the same by punching and bending a single metal plate, there is known a technique described in Patent Documents 1 to 3. 図13〜15は、このうちの特許文献2に記載された、スラスト円筒ころ軸受用の保持器1を示している。 13-15, of which was described in Patent Document 2 shows a cage 1 for axial cylindrical roller. この保持器1は、金属板を曲げ形成する事により一体に造られたもので、内径側リム部2と、外径側リム部3と、中間板部4と、複数のポケット5、5とを備える。 The retainer 1 has been made together by forming bent metal plate, and the inner diameter side rim portion 2, an outer diameter side rim portion 3, and the intermediate plate 4, a plurality of pockets 5,5 equipped with a. このうちの内径側リム部2は、上記保持器1の内周縁部に存在するもので、全周に亙って連続する円環状である。 The inner diameter side rim portion 2 of this, which exists in the inner periphery of the retainer 1, an annular shape continuous over the entire circumference. 又、上記外径側リム部3は、上記保持器1の外周縁部に存在するもので、上記内径側リム部2と同心で全周に亙って連続する円環状である。 Also, the outside diameter side rim portion 3, which exists in the outer peripheral edge portion of the cage 1, an annular shape continuous over the entire circumference at the inner diameter side rim portion 2 concentrically. 又、上記中間板部4は、この内径側リム部2と上記外径側リム部3との間に存在するもので、断面形状が径方向に関して屈曲している。 Moreover, the intermediate plate portion 4, which exists between the inner diameter side rim portion 2 and the outer diameter side rim portion 3 is bent cross-sectional shape in the radial direction. 更に、上記各ポケット5、5は、上記中間板部4に円周方向に関して間欠的に、それぞれ放射方向に形成されたもので、それぞれの内側に円筒ころ6、6を、転動自在に保持する。 Furthermore, the pockets 5, 5 intermittently in the circumferential direction to the intermediate board 4, which has been formed in the respective radial directions, the respective cylindrical rollers 6, 6 on the inside, rollably held to. 上記中間板部4のうちで、円周方向に隣り合うポケット5、5同士の間部分は、柱部7、7となっている。 Of the intermediate plate 4, while the portion of the pocket 5, 5 adjacent to each other in the circumferential direction is a pillar portions 7.

又、上記中間板部4は、中央平板部8と、外径側平板部9と、内径側平板部10と、内径側連続部11と、外径側連続部12とから成る。 Moreover, the intermediate plate portion 4 has a central flat plate portion 8, an outer diameter side flat plate portion 9, and the inner diameter side flat plate portion 10, and the inner diameter side continuous unit 11, consisting of outer diameter continuous section 12. このうちの中央平板部8は、径方向(図13〜14の左右方向)中間部で軸方向一端(図14の上端)寄り部分に形成されている。 Central flat plate portion 8 of this is formed on the (upper end in FIG. 14) at one axial end at the intermediate section inner portion (the left-right direction in FIG. 13 to 14) radially. 又、上記外径側平板部9は、上記外径側リム部3の径方向内側(図13〜14の右側)に隣接する、軸方向他端(図14の下端)寄り部分に形成されている。 Also, the outside diameter side flat plate portion 9 is adjacent to the radially inner side of the outer diameter side rim portion 3 (right side in FIG. 13 to 14), is formed on a portion close (lower end in FIG. 14) axial end there. 又、上記内径側平板部10は、上記内径側リム部2の径方向外側(図13〜14の左側)に隣接する、軸方向他端寄り部分に形成されている。 Further, the inner diameter side flat plate portion 10 is adjacent to the radially outer side of the inner diameter side rim portion 2 (left side of Fig. 13-14), are formed in the axial end portion close. 又、上記内径側連続部11は、上記内径側平板部10の外周縁と、上記中央平板部8の内周縁とを連続させ、上記外径側連続部12は、この中央平板部8の外周縁と上記外径側平板部9の内周縁とを連続させる。 Further, the diametrically inside the continuous portion 11, and the outer peripheral edge of the inner diameter side flat plate portion 10, is continuous and the inner peripheral edge of the central flat portion 8, the outside diameter side continuous unit 12, outside the central flat portion 8 the inner periphery of the periphery and the outside diameter side flat plate portion 9 is continuous. これら内径側、外径側両連続部11、12同士の間隔は、上記中央平板部8から離れる程大きくなる。 These inner diameter side, the outer diameter distance between the successive sections 11, 12 each other, the larger the distance from the central flat portion 8.

上述の様に構成する保持器1は、上記各ポケット5、5内に円筒ころ6、6を転動自在に保持した状態で、軸方向に対向する1対の平面同士の間に挟持する。 Cage 1 constructed as described above, in a state where the cylindrical rollers 6, 6 on the inside each pocket 5, 5 rollably held sandwiched between the plane between a pair of axially opposed. 上記中間板部4を構成する、上記中央、外径側、内径側各平板部8〜10のうち、上記各柱部7、7の円周方向両側縁部分は、上記内径側、外径側両連続部11、12の両側縁部分に比べて、上記各ポケット5、5内に向け少し突出している。 Constituting the intermediate plate 4, the central, outer diameter side, of the inner diameter side each flat portion 8 to 10, circumferential both side edge portions of the column sections 7, 7, said inner diameter side, the outer diameter compared to both side edge portions of the two continuous sections 11 and 12, have a little protrude toward the inside each pocket 5,5. 上記各ポケット5、5内に上記各円筒ころ6、6を保持した状態では、この様に突出した部分がこれら各円筒ころ6、6の転動面と係合して、これら各円筒ころ6、6に対する、上記保持器1の軸方向の変位を抑える。 In the state of holding the respective cylindrical rollers 6 and 6 above in the pockets 5,5, protruding portion in this manner engages with the rolling surfaces of the cylindrical rollers 6, 6, respective cylindrical rollers 6 , for 6 to suppress the axial displacement of the cage 1. 即ち、この保持器1の軸方向に関する位置決めを、所謂ころ案内により図る。 That is, the positioning in the axial direction of the cage 1, achieved by the guide rollers so-called.

上述の様な保持器1を造る製造方法として特許文献2には、図16の(A)〜(F)に示す様な製造方法が記載されている。 Patent Document 2 as a manufacturing method for making the cage 1 such as described above, a manufacturing method such as shown in (A) ~ (F) of FIG. 16 is described. この特許文献2に記載された製造方法の場合、金属板を打ち抜いて成る、図16の(A)に示した円輪状の素材13に塑性加工を施す事により、それぞれが同図の(B)〜(F)に示す様な断面形状を有する第一〜第五中間素材14〜18に順次加工する。 For the production method described in Patent Document 2, formed by punching a metal plate, by performing plastic working on the circular ring of material 13 shown in (A) of FIG. 16, each of FIG. (B) sequentially processed into first to fifth intermediate material 14 to 18 having - a cross-sectional shape as shown in (F). そして、(F)に示した第五中間素材18に打ち抜き加工を施して複数のポケット5、5(図13〜14参照)を形成する事により、上記保持器1として完成する。 Then, by forming a plurality of pockets 5,5 subjected to punching to a fifth intermediate material 18 shown in (F) (see Fig. 13-14), completed as the retainer 1.

上述の様な特許文献2に記載された、スラスト円筒ころ軸受用の保持器とその製造方法は、上記各ポケット5、5内に保持する円筒ころ6、6として、長さが直径に対して大きい、一般的なものを保持する場合を考慮したものである。 Described in Patent Document 2, such as described above, and their preparation cage for a thrust cylindrical roller bearing, as a cylindrical roller 6, 6 held in the in each pocket 5, 5, with respect to a diameter length large, is obtained by considering the case of holding the general ones. 上記特許文献2に記載された保持器1では、長さが直径に対して小さい、例えば、長さLと直径Dとの比L/Dが1以下である短寸の円筒ころをポケット5内に保持しても、この保持器1の軸方向に関する位置決めをころ案内により図る事はできない。 In cage 1 described in Patent Document 2, is small relative to the diameter length, for example, the length L and the ratio L / D between the diameter D of part length of the cylindrical rollers of the pocket 5 which is 1 or less holds also, it can not be achieved by the guide roller positioned in the axial direction of the cage 1. この理由は、中央平板部8と、外径側、内径側両平板部9、10との、軸方向に関する距離が、円筒ころの直径に対し短過ぎて、これら各平板部8〜10の端縁により、この円筒ころがポケット5から抜け出る方向に変位する事を抑えられない為である。 The reason for this, the central flat portion 8, the outer diameter side, the inner diameter side flat plates 9, 10, the distance in the axial direction, and too short to the diameter of the cylindrical roller, the end of the flat plate portions 8-10 by an edge, the cylindrical roller is because that can not be suppressed from being displaced in a direction to escape from the pocket 5.

上述の様に、長さLと直径Dとの比L/Dが1以下である様な短寸の円筒ころを保持すると共に、軸方向に関する位置決めをころ案内により図る保持器を実現すべく、上記中央平板部8と、外径側、内径側両平板部9、10との軸方向に関する距離を大きくすると、次の様な問題を生じる。 As described above, with the ratio L / D between the length L and the diameter D to hold the roller part length of the cylinder, such as is 1 or less, to realize the retainer achieved by the guide roller positioned in the axial direction, and the central flat portion 8, the outer diameter side, increasing the distance in the axial direction of the inner diameter side flat plates 9, 10, resulting in following problems. 即ち、この様な構造の場合には、図14に示した保持器1の軸方向に関する厚さTの、径方向に関する幅Wに対する割合(T/W)が大きくなる。 That is, in the case of such a structure, the thickness T in the axial direction of the cage 1 shown in FIG. 14, the ratio (T / W) increases the width W in the radial direction. この様な保持器1を実現する場合、前記内径側、外径側両連続部11、12の傾斜角度が急になり(軸方向に近づき)これら両連続部11、12同士の間隔、内径側連続部11と前記内径側リム部2との間隔、外径側連続部12と前記外径側リム部3との間隔が、何れも狭くなる。 When implementing such a retainer 1, the inner diameter side, the angle of inclination of the outer diameter side bicontinuous 11, 12 becomes steeper (closer to the axial direction) thereof bicontinuous sections 11, 12 distance between an inner diameter side distance between consecutive portions 11 and the inner diameter side rim portion 2, the distance between the outer diameter continuous portion 12 and the outer diameter side rim portion 3, both narrowed. この様な保持器1を、前述の図16に示す様な工程で造ると、ポケット5を打ち抜く為の打ち抜き型(特にパンチ)の耐久性確保が難しくなる他、前記中間板部4を所望の形状に曲げ加工する為の型の耐久性確保も難しくなる。 Such a cage 1, when made in the process, such as shown in FIG. 16 described above, except that securing durability of the punching die for punching the pocket 5 (especially punch) is difficult, desired the intermediate plate 4 securing durability mold for bent into shape becomes difficult. この理由は、打ち抜き型に関しては、上記両連続部11、12部分を打ち抜く際の抵抗が大きくなる為であり、曲げ加工の為の型に関しては、保持器の径方向に関する幅寸法が小さくなり、加工時に大きな応力が加わり易くなる為である。 This is because, with respect to punch die is because the resistance when punching the two continuous sections 11 and 12 partially increases, with respect to the type for the bending, the width dimension in the radial direction of the cage is reduced, it is because that is easily applied large stress at the time of processing.

上述の様な事情に鑑みて従来は、短寸の円筒ころを保持すると共に、軸方向に関する位置決めをころ案内により図る保持器を得る場合には、特許文献4、5に記載されている様な、それぞれが金属板を曲げ形成する事により造られた2枚の素子を最中状に重ね合わせた構造としていた。 Conventionally In view of the circumstances as described above, it holds the cylindrical rollers of the part length, in the case of obtaining the cage to reduce the guide roller positioning the axial direction, such as described in Patent Documents 4 and 5 , were each a structure superimposed on the shape during the two elements made by forming bent metal plate. 即ち、1枚の金属板に打ち抜き加工及び曲げ加工を施す事により低コストで造れる構造で、上述の様な、短寸の円筒ころを保持すると共に、軸方向に関する位置決めをころ案内により図る保持器とその製造方法は実現されていなかった。 That is, a structure able to build a low cost by punching and bending a single metal plate, such as described above, the cage holds the cylindrical rollers of the part length, achieved by the guide roller positioned in the axial direction and a method of manufacturing the same has not been realized.

特開平6−94038号公報 JP 6-94038 discloses 特開2000−213546号公報 JP 2000-213546 JP 特開2002−206525号公報 JP 2002-206525 JP 特開平8−109925号公報 JP-8-109925 discloses 特開2003−172346号公報 JP 2003-172346 JP

本発明は、上述の様な事情に鑑みて、1枚の金属板に打ち抜き加工及び曲げ加工を施す事により低コストで造れる構造で、短寸の円筒ころを保持すると共に、軸方向に関する位置決めをころ案内により図る保持器とその製造方法を実現すべく発明したものである。 The present invention is, in view of the circumstances as described above, in able to build structures at low cost by punching and bending a single metal plate, which holds the cylindrical rollers of the part length, the positioning in the axial direction it is obtained by the invention to realize a holder and a manufacturing method thereof to achieve by the guide rollers.

本発明のスラスト円筒ころ軸受用保持器とその製造方法のうち、請求項1に記載したスラスト円筒ころ軸受用保持器は、前述の図13〜15に示した、特許文献2に記載されたスラスト円筒ころ軸受用保持器と同様に、金属板を曲げ形成する事により一体に造られたもので、内径側リム部と、外径側リム部と、中間板部と、複数のポケットとを備える。 Among the thrust cylindrical roller bearing cage and a manufacturing method thereof of the present invention, a thrust cylindrical roller bearing cage according to claim 1, shown in FIG. 13 to 15 described above, the thrust described in Patent Document 2 similar to the retainer for a cylindrical roller bearing, comprising those built together by forming bent metal plate, and the inner diameter side rim portion, and the outer diameter side rim portion, and the intermediate plate portion, and a plurality of pockets .
このうちの内径側リム部は、内周縁部に存在するもので、全周に亙って連続する円環状である。 The inner diameter side rim portion of the, which exists in the inner peripheral edge, an annular shape continuous over the entire circumference.
又、上記外径側リム部は、外周縁部に存在するもので、上記内径側リム部と同心で全周に亙って連続する円環状である。 Also, the outside diameter side rim portion, which exists in the outer peripheral edge, an annular shape continuous over the entire circumference at the inner diameter side rim portion concentrically.
又、上記中間板部は、上記外径側リム部と上記内径側リム部との間に存在するもので、断面形状が径方向に関して屈曲している。 Moreover, the intermediate plate portion, which exists between the outer diameter side rim portion and the inner diameter side rim portion is bent cross-sectional shape in the radial direction.
又、上記各ポケットは、上記中間板部に円周方向に関して間欠的に、それぞれ放射方向に形成されたものである。 Furthermore, the pockets may intermittently in the circumferential direction to the intermediate board, and is formed in each radial direction.

更に、上記中間板部は、中央平板部と、外径側平板部と、内径側平板部と、内径側連続部と、外径側連続部とから成るものである。 Moreover, the intermediate plate portion includes a central flat portion, and the outer diameter side flat plate portion, and the inner diameter side flat plate portion, and the inner diameter side continuous section is made of an outer diameter side continuous unit.
このうちの中央平板部は、径方向中間部で軸方向一端寄り部分に形成されたものである。 Central flat portion of this are those which are formed in the axial end portion close in the radial direction intermediate portion.
又、上記外径側平板部は、上記外径側リム部の径方向内側に隣接する、軸方向他端寄り部分に形成されたものである。 Also, the outside diameter side flat plate portion is adjacent to the radially inner side of the outer diameter side rim portion, and is formed in the axial end portion close.
又、上記内径側平板部は、上記内径側リム部の径方向外側に隣接する、軸方向他端寄り部分に形成されたものである。 Further, the inner diameter side flat plate portion is adjacent to the radially outer side of the inner diameter side rim portion, and is formed in the axial end portion close.
又、上記内径側連続部は、上記内径側平板部の外周縁と上記中央平板部の内周縁とを連続させるものである。 Further, the inner diameter side continuous section is intended to continuously and inner peripheral edge of the outer peripheral edge and the central flat portion of the inner diameter side flat plate portion.
更に、上記外径側連続部は、上記中央平板部の外周縁と上記外径側平板部の内周縁とを連続させるものである。 Furthermore, the outside diameter side continuous section is intended to continuously and inner peripheral edge of the outer peripheral edge and the outer diameter side flat plate portion of the central flat portion.
特に、本発明のスラスト円筒ころ軸受用保持器に於いては、上記中央平板部と上記内径側、外径側両連続部との交差角度が、それぞれ90度以下である。 In particular, at the thrust cylindrical roller bearing cage of the present invention, the central flat portion and the inner diameter side, the angle of intersection between the outer diameter side bicontinuous unit, or less, respectively 90 degrees.

又、請求項4に記載したスラスト円筒ころ軸受用保持器の製造方法は、次の第一〜第九工程から成る。 In the method of manufacturing the cage for a thrust cylindrical roller bearing according to claim 4, consisting of the following first to ninth steps.
先ず、第一工程では、素材となる金属板から円板状の素材を打ち抜く。 First, in the first step, punching out a disc-shaped material of a metal plate as a material.
続く第二工程では、この素材に絞り加工を施す事により、この素材の中央部乃至径方向中間部をこの素材の厚さ方向に関し片側に膨らませて第一中間素材とする。 Followed by the second step, by subjecting the drawing process to the material, the central portion to the radially intermediate portion of this material to the first intermediate material is inflated the side relates the thickness direction of the material.
続く第三工程では、好ましくはこの第一中間素材の径方向外寄り部分が径方向外方に変位する事を阻止した状態で、この第一中間素材の中央部に、上記第二工程と反対向きの絞り加工を施して、第二中間素材とする。 Continues in the third step, the opposite preferably while preventing from being displaced radially outboard portion of the first intermediate material radially outwardly, the central portion of the first intermediate material, and the second step subjected to drawing orientation, the second intermediate material.
続く第四工程では、上記第二中間素材に打ち抜き加工を施す。 It followed in the fourth step, punching to the second intermediate material. そして、この第二中間素材の中央部に非円形の位置決め孔を形成すると共に、径方向中間部分にポケットを構成する為の複数の下孔を、円周方向に関して間欠的に、それぞれ放射方向に形成して、第三中間素材とする。 Then, to form a non-circular positioning hole in a central portion of the second intermediate material, a plurality of lower holes for forming the pocket in the radial direction intermediate portion, intermittently in the circumferential direction, each radial direction formed to be a third intermediate material.
続く第五工程では、好ましくは上記第三中間素材の径方向外寄り部分が径方向外方に変位する事を阻止すると共に、同じく径方向内寄り部分が径方向内方に変位する事を阻止した状態で、上記第三中間素材の径方向中間部に曲げ加工を施す事により、この径方向中間部の径方向に関する断面形状を屈曲させる。 Continues in the fifth step, preferably prevents that displaced the with radially outboard portion of the third intermediate material is prevented from displacing radially outward, likewise radially inboard portion radially inward in a state, by subjecting the bending in the radial direction intermediate portion of the third intermediate material, bending the cross-sectional shape in the radial direction of the radially intermediate portion. そして、この径方向中間部のうちで径方向中央部に位置し、軸方向片側が凸曲面となった中央湾曲部と、この中央湾曲部の径方向外側に隣接して軸方向他側が凸曲面となった外径側湾曲部と、この中央湾曲部の径方向内側に隣接して軸方向他側が凸曲面となった内径側湾曲部とを備えた第四中間素材とする。 Then, positioned radially central portion among the radially intermediate portion, and a central curved portion axially on one side has a convex curved surface, the other axial side convex surface adjacent the radially outer side of the central bending portion an outer diameter side curved portion becomes, the other axial side adjacent the radially inner side of the central curved portion to the fourth intermediate material having a inner diameter side curved portion that is convex curved.
続く第六工程では、この第四中間素材の径方向中間部を軸方向両側から押圧する事により、上記中央、外径側、内径側各湾曲部の頂部を押し潰す。 Continued In a sixth step, by pressing the radial direction intermediate portion of the fourth intermediate material from both axial sides, crushing the central, outer diameter, the top portion of the inner diameter side each curved portion. そして、それぞれ中央、外径側、内径側各平板部として第五中間素材とする。 Then, each of the central, outer diameter side, and the fifth intermediate material as the inner diameter side each flat plate portion.
続く第七工程では、上記各下孔の内周縁のうち、上記各ポケット内に保持される円筒ころの転動面と接触する部分の性状を整えて、第六中間素材とする。 Followed by the seventh step, of the inner peripheral edge of the respective lower holes, it established a property of the portion in contact with the rolling surface of cylindrical rollers held in the above in each pocket, and sixth intermediate material.
続く第八工程では、この第六中間素材の内周縁部と外周縁部とに存在する余肉部を除去して、第七中間素材とする。 Followed by the eighth step, the excess thickness portions existing and inner and outer peripheral edges of the sixth intermediate material is removed to a seventh intermediate material.
更に、続く第九工程では、上記第七中間素材の内外両周縁部のうちの少なくとも一方の周縁部に曲げ加工を施して、これら両周縁部を内径側、外径側両リム部とする。 Furthermore, it continues in the ninth step, by performing at least one of bending the peripheral edge processing of the inner and outer peripheral portions of the seventh intermediate material, for both of these peripheral portion radially inner side, an outer diameter side both the rim portion.

前述の様な本発明のスラスト円筒ころ軸受用保持器の場合には、1枚の金属板に打ち抜き加工及び曲げ加工を施す事により低コストで造れる構造で、例えば、長さLと直径Dとの比L/Dが1以下である様な短寸の円筒ころを保持すると共に、軸方向に関する位置決めをころ案内により図れる。 In the case of the cage for a thrust cylindrical roller bearing of the above such present invention is a structure able to build a low cost by punching and bending a single metal plate, for example, the length L and the diameter D the ratio L / D is holds the roller part length of the cylinder, such as is 1 less, thereby the guide roller positioning the axial direction.
即ち、中央平板部と内径側、外径側両連続部との交差角度を、それぞれ90度以下としている為、上記スラスト円筒ころ軸受用保持器の軸方向に関する厚さの、径方向に関する幅に対する割合を大きくできる。 That is, the central flat portion and the inner diameter side, the intersection angle between the outer diameter side bicontinuous part, because of the less each 90 degrees, the thickness in the axial direction of the cage for the thrust cylindrical roller bearing, the width in the radial direction proportion can be increased. この為、上述の様な短寸の円筒ころを保持すると共に、軸方向に関する位置決めをころ案内により図れる。 Therefore, while holding the cylindrical rollers of the part length, such as described above, thereby the guide roller positioning the axial direction.

又、上述の様なスラスト円筒ころ軸受用保持器の製造方法によれば、上述の様に中央平板部と内径側、外径側両連続部との交差角度を、それぞれ90度以下とした構造を、型の耐久性を確保する事により、低コストで造れる。 Further, according to the method of manufacturing such a thrust cylindrical roller bearing cage described above, the central flat portion and the inner diameter side as described above, the intersection angle between the outer diameter side bicontinuous unit was less by 90 degrees structure and by securing the durability of the mold, able to build a low cost. 即ち、第四工程で各ポケットを形成する為の各下孔を、径方向中間部が湾曲した程度の第二中間素材の段階で打ち抜く為、打ち抜きの為の型(特にダイス)に大きな応力が加わりにくい。 That is, each pilot hole for forming each pocket in the fourth step, since the punched by the second intermediate material stage to the extent that the intermediate portion radially curved, large stress in a mold (in particular dies) for stamping It joined difficult. この場合でも、上記各下孔の内周縁のうち、これら各下孔から造られた各ポケットの内周縁でこれら各ポケット内に保持される各円筒ころの転動面と接触する部分の性状を、第七工程で整えるので、これら各ポケット内に保持される各円筒ころの転動を円滑に行なわせる事ができる。 In this case, of the inner peripheral edge of the respective lower holes, the properties of the portion in contact with the rolling surface of the rollers each cylinder is retained within respective pockets in the inner periphery of each pocket made from each of these pilot holes since arranging in the seventh step, it is the rolling of rollers each cylinder held in these in each pocket can be smoothly performed. 又、これら各円筒ころの転動面を傷付ける事もない。 In addition, it does not even hurt the rolling surface of each of these cylindrical roller.

又、中間板部の断面形状を所望のものに加工する場合も、1対の型により一挙に最終形状を得るのではなく、第五工程で造った中央、内径側、外径側各湾曲部の頂部を、第六工程で押し潰す事により、それぞれ中央、外径側、内径側各平板部に加工する。 Moreover, even when processing a cross-sectional shape of the intermediate plate portion to a desired one, rather than obtaining the stroke into the final shape by a pair of mold, the central built in the fifth step, the inner diameter side, the outer diameter side each curved portion the top, by squeezing in a sixth step, processing center, the outer diameter side, the inner diameter side each flat plate portion, respectively. 従って、上記中間板部の断面形状を所望のものに加工する為に使用する型として、保持器の径方向に関する幅寸法が小さく、同じく軸方向に関する長さ(高さ)寸法が大きいものを使用する必要がない。 Therefore, using those as a mold to be used to process the sectional shape of the intermediate plate portion to a desired one, the width dimension in the radial direction of the cage is small, also the length in the axial direction (height) dimension is greater there is no need to. この為、上記中間板部の断面形状を所望のものに加工する為に使用する型にも大きな応力が加わりにくい。 Therefore, the mold hardly large stress is applied to be used for processing the cross-sectional shape of the intermediate plate portion to a desired one. この結果、金属板からスラスト円筒ころ軸受用保持器を造る為に使用する複数の型のうちの何れの型にも、大きな応力が加わる事を防止できる。 As a result, none of the types of a plurality of types to be used to produce a cage for a thrust cylindrical roller bearing of a metal plate, it is possible to prevent the large stress is applied. そして、これら各型の耐久性を確保し、前述の様な構造を有する、スラスト円筒ころ軸受用保持器の製造コストを、低く抑えられる。 Then, to ensure the durability of each of these types, having such a structure described above, the manufacturing cost of the cage for a thrust cylindrical roller bearing, is kept low.

本発明のスラスト円筒ころ軸受用保持器を実施する場合に好ましくは、請求項2に記載した様に、内径側、外径側両連続部同士の間隔が、中央平板部から離れる程小さくなる形状とする。 Preferably when performing a bearing retainer a thrust cylindrical roller of the present invention, as set forth in claim 2, the inner diameter side, the distance between the outer diameter side bicontinuous section becomes smaller with increasing distance from the central flat portion shape to.
この様な構造を採用すれば、保持器の径方向に関する、中央、内径側、外径側各平板部の幅寸法を大きくできる。 By employing such a structure, in the radial direction of the retainer, center, inner diameter side, the width dimension of the outer diameter side each flat plate portion can be increased. そして、これら各平板部の円周方向端縁と、ポケット内に保持された円筒ころの転動面との係合状態を安定させて、ころ案内による、保持器の軸方向に関する位置決め性を良好にできる。 Then, the circumferential edge of the flat plate portions, thereby stabilizing the engagement with the rolling surface of cylindrical rollers held in the pocket, by the guide rollers, the positioning with respect to the axial direction of the retainer good It can be in.

又、好ましくは、請求項3に記載した様に、各ポケット内に保持される円筒ころの長さLと直径Dとの比L/Dが1以下とする。 Further, preferably, as set forth in claim 3, the ratio L / D between the length L and the diameter D of the cylindrical rollers which are retained within the pockets is 1 or less.
従来は、1枚の金属板を曲げ加工して成り、軸方向の位置決めをころ案内により図る構造で、この様な短寸の円筒ころを保持する構造は知られていなかった。 Conventionally, made by bending a single metal plate, a structure achieved by the guide roller positioned in the axial direction, the structure for holding the cylindrical rollers of such part length is not known. 本発明のスラスト円筒ころ軸受用保持器は、この様な短寸の円筒ころを保持できる構造として、特に有効である。 Axial cylindrical roller bearing cage of the present invention, a structure capable of holding the cylindrical rollers of such part length, is particularly effective.

又、本発明のスラスト円筒ころ軸受用保持器の製造方法を実施する場合に好ましくは、請求項5に記載した様に、第四工程で、1個の位置決め孔と複数の下孔とを同時に打ち抜く。 Further, preferably when carrying out the production method of the cage for a thrust cylindrical roller bearing of the present invention, as set forth in claim 5, in the fourth step, one positioning hole and a plurality of the lower hole at the same time punching.
この様にすれば、特に精密な送り装置等を使用しなくても、上記位置決め孔と上記各下孔との位置関係を厳密に規制し易く、良質のスラスト円筒ころ軸受用保持器を低コストで得られる。 If in this manner, especially without using a precision feeding apparatus or the like, tend to strictly regulate the positional relation between the positioning hole and the respective lower holes, low-cost retainers for good axial cylindrical roller obtained by.

又、好ましくは、請求項6に記載した様に、第七工程で、各下孔の内周縁のうち円筒ころの転動面と接触する部分の性状を整える加工を、その表面を平滑面とした扱き治具をこの部分に押し付ける、扱き加工により行なう。 Further, preferably, as set forth in claim 6, in the seventh step, the process to arrange the properties of the portion in contact with the rolling surface of the cylindrical roller of the inner peripheral edge of each lower hole, a smooth surface and the surface pressing the squeezing jig and in this part, carried out by the ironing work.
この様にして上記各下孔の内周縁の性状を整えれば、低コストで、しかも得られた各ポケットの内面を平滑にして、これら各ポケット内に保持された各円筒ころの転動を円滑に行なわせ、且つ、これら各円筒ころの表面の損傷を効果的に防止できる。 In this manner a manner Totonoere the properties of the inner peripheral edge of each bottom hole, at a low cost, yet obtained by smoothing the inner surface of each pocket, the rolling of the cylindrical rollers held by these in each pocket It was carried out smoothly, and can prevent damage to the surface of the respective cylindrical rollers effectively.

又、上述の様な請求項6に記載した製造方法を実施する場合には、請求項7に記載した様に、第四工程で打ち抜く各下孔を、各ポケットのうちの一部で、当該部分の内周縁がこれら各ポケット内に保持される円筒ころの転動面と接触しない部分に対応する部分のみとする事もできる。 Further, when carrying out the production method described in claim 6, such as described above, as set forth in claim 7, each pilot hole is punched in the fourth step, a part of each pocket, the inner peripheral edge portions may also be only the portion corresponding to the portion not in contact with the rolling surface of cylindrical rollers held in these in each pocket. この場合には、残りの部分の打ち抜きは第七工程で行ない、打ち抜きに続いてこの残り部分に扱き治具を押し付け、この残り部分の内周縁の性状を整える。 In this case, the punching of the remaining part done in the seventh step, followed by punching against the jig ironing in this rest, adjust the properties of the inner peripheral edge of the remaining portion.
この様にしても、上述の様に、低コストで、しかも得られた各ポケットの内面を平滑にできる。 Even in this way, as described above, at a low cost, yet the inner surface of each pocket obtained can be made smooth.
尚、請求項8に記載した様に、第七工程を、第八工程の後、第九工程の前に行なう事もできる。 Incidentally, as described in claim 8, the seventh step, after the eighth step may be performed before the ninth step. この場合には、この第八工程では、第五中間素材の内周縁部と外周縁部とに存在する余肉部を打ち抜く。 In this case, in the eighth step, punching out the excess thickness portions existing and inner and outer peripheral edges of the fifth intermediate material.

図1は、本発明のスラスト円筒ころ軸受用の保持器1a、1bの2例を示している。 Figure 1 shows two examples of the cage 1a, 1b for the thrust cylindrical roller bearing of the present invention. これら両保持器1a、1bはそれぞれ、金属板を曲げ形成する事により一体に造られたもので、内径側リム部2と、外径側リム部3と、中間板部4aと、複数のポケット5とを備える。 Each of these two retainers 1a, is 1b, which has been produced in one piece by forming bent metal plate, and the inner diameter side rim portion 2, an outer diameter side rim portion 3, and the intermediate plate portion 4a, a plurality of pockets and a 5. このうちの内径側リム部2は、上記保持器1a、1bの内周縁部に存在するもので、全周に亙って連続する円環状である。 The inner diameter side rim portion 2 of this, which exists in the inner periphery of the cage 1a, 1b, an annular shape continuous over the entire circumference. 又、上記外径側リム部3は、上記保持器1a、1bの外周縁部に存在するもので、上記内径側リム部2と同心で全周に亙って連続する円環状である。 Also, the outside diameter side rim portion 3, which exists in the outer peripheral edge portion of the cage 1a, 1b, an annular shape continuous over the entire circumference at the inner diameter side rim portion 2 concentrically. 又、上記中間板部4aは、この内径側リム部2と上記外径側リム部3との間に存在するもので、断面形状が径方向に関して屈曲している。 Moreover, the intermediate plate portion 4a, which exists between the inner diameter side rim portion 2 and the outer diameter side rim portion 3 is bent cross-sectional shape in the radial direction. 更に、上記各ポケット5は、上記中間板部4aに円周方向に関して間欠的に、それぞれ放射方向に形成されたもので、それぞれの内側に、前述した様に、長さLと直径Dとの比L/Dが1以下である短寸の円筒ころを、転動自在に保持する。 Furthermore, the pockets 5 are intermittently in the circumferential direction to the intermediate board 4a, one formed in each radial direction, the respective inner, as described above, the length L and the diameter D the ratio L / D is around part length of a cylinder is less than 1, to rollably hold. 上記中間板部4aのうちで、円周方向に隣り合うポケット5、5同士の間部分は、柱部7、7(図13、15参照)となっている。 Of the intermediate plate portion 4a, while the portion of the pocket 5, 5 adjacent to each other in the circumferential direction is a pillar portions 7 (see FIG. 13 and 15).

又、上記中間板部4aは、中央平板部8と、外径側平板部9と、内径側平板部10と、内径側連続部11a、11bと、外径側連続部12a、12bとから成る。 Moreover, the intermediate plate portion 4a has a central flat plate portion 8, consists of an outer diameter side flat plate portion 9, and the inner diameter side flat plate portion 10, the inner diameter side continuous portion 11a, a 11b, outer diameter continuous section 12a, and 12b . このうちの中央平板部8は、径方向(図1の左右方向)中間部で軸方向一端(図1の上端)寄り部分に形成されている。 Central flat plate portion 8 of this, the radial direction is formed on the (upper end in FIG. 1) axial end at the intermediate section inner portion (the left-right direction in FIG. 1). 又、上記外径側平板部9は、上記外径側リム部3の径方向内側(図1の右側)に隣接する、軸方向他端(図1の下端)寄り部分に形成されている。 Also, the outside diameter side flat plate portion 9 is adjacent to the radially inner side of the outer diameter side rim portion 3 (right side in FIG. 1), it is formed in the axial end (lower end in FIG. 1) inner portion. 又、上記内径側平板部10は、上記内径側リム部2の径方向外側(図1の左側)に隣接する、軸方向他端寄り部分に形成されている。 Further, the inner diameter side flat plate portion 10 is adjacent to the radially outer side of the inner diameter side rim portion 2 (left side in FIG. 1), are formed in the axial end portion close. 又、上記内径側連続部11a、11bは、上記内径側平板部10の外周縁と、上記中央平板部8の内周縁とを連続させ、上記外径側連続部12a、12bは、この中央平板部8の外周縁と上記外径側平板部9の内周縁とを連続させる。 Further, the inner diameter side continuous section 11a, 11b has an outer peripheral edge of the inner diameter side flat plate portion 10, is continuous and the inner peripheral edge of the central flat portion 8, the outside diameter side continuous section 12a, 12b, the central flat the inner periphery of the outer peripheral edge and the outer diameter side flat plate portion 9 parts 8 made continuous. 以上の構成は、上記各ポケット5内の保持する円筒ころが短寸である点を除き、前述の図13〜15に示した従来構造と同様である。 Above configuration, except cylindrical roller held by the pockets 5 are part length is the same as the conventional structure shown in FIGS. 13 to 15 described above.

特に、本実施例の保持器1a、1bの場合には、上記内径側、外径側両連続部11a、12a同士を実質的に平行にするか{図1(A)の場合}、或は、上記内径側、外径側両連続部11b、12b同士の間隔が、上記中央平板部8から離れる程小さくなる様にしている{図1(B)の場合}。 Particularly, in the case of the cage 1a, 1b of the present embodiment, the inner diameter side, the outer diameter bicontinuous portion 11a, or substantially parallel to 12a each other {case of FIG. 1 (A)}, or the inner diameter side, {if Figure 1 (B)} of the outer diameter side bicontinuous portion 11b, the spacing 12b between, and the like decreases with increasing distance from the central flat portion 8. 言い換えれば、上記中央平板部8に対する上記内径側、外径側両連続部11a、11b、12a、12bの折り曲げ角度を90度以上として、上記中央平板部8とこれら内径側、外径側両連続部11a、11b、12a、12bとの交差角度を、それぞれ90度以下としている。 In other words, the inner diameter side with respect to the central flat portion 8, the outer diameter side bicontinuous portion 11a, 11b, 12a, the bending angle of 12b as above 90 degrees, the central flat portion 8 and these inner diameter side, the outer diameter side bicontinuous part 11a, 11b, 12a, the crossing angle between 12b, is less by 90 degrees. 即ち、本実施例の場合、上記従来構造とは異なり、上記内径側、外径側両連続部11a、11b、12a、12b同士の間隔が、上記中央平板部8から離れる程大きくならない様にする事で、上記保持器1a、1bの軸方向に関する厚さTの、径方向に関する幅Wに対する割合(T/W)を大きくしている。 That is, in the case of this embodiment, unlike the conventional structure, the inner diameter side, the outer diameter bicontinuous portion 11a, 11b, 12a, the spacing 12b between, to as not large enough away from the central flat portion 8 in fact, the cage 1a, the thickness T in the axial direction 1b, the have increase the ratio (T / W) of the width W in the radial direction.

上述の様な構造を有する本実施例の、スラスト円筒ころ軸受用の保持器1a、1bの場合には、炭素鋼板、ステンレス鋼板等、1枚の金属板に打ち抜き加工及び曲げ加工を施す事により低コストで造れる構造で、長さLと直径Dとの比L/Dが1以下である様な短寸の円筒ころを保持すると共に、軸方向に関する位置決めをころ案内により図れる。 Of the present embodiment having such a structure described above, the cage 1a for axial cylindrical roller, in the case of 1b is carbon steel, stainless steel or the like, by punching and bending a single metal plate in able to build the structure at a low cost, with the ratio L / D between the length L and the diameter D to hold the roller part length of the cylinder, such as is 1 or less, thereby the guide roller positioning the axial direction.
即ち、上記中央平板部8と上記内径側、外径側両連続部11a、11b、12a、12bとの交差角度を、それぞれ90度以下としている為、上記保持器1a、1bの軸方向に関する厚さTの、径方向に関する幅Wに対する割合(T/W)を大きくできる。 That is, the central flat portion 8 and the inner diameter side, the outer diameter bicontinuous portion 11a, 11b, 12a, the crossing angle between 12b, because of the 90 ° or less, respectively, the retainer 1a, the thickness in the axial direction of 1b are T, then you increase the ratio (T / W) of the width W in the radial direction. この為、上述の様な短寸の円筒ころを保持すると共に、軸方向に関する位置決めをころ案内により図れる。 Therefore, while holding the cylindrical rollers of the part length, such as described above, thereby the guide roller positioning the axial direction.

上述した、図1(B)に示す様なスラスト円筒ころ軸受用の保持器1bの製造方法に就いて、図2〜11により、工程順に説明する。 Described above, concerning the method for manufacturing the retainer 1b for axial cylindrical roller such as shown in FIG. 1 (B), the Fig. 2-11, will be described in the order of steps.
先ず、第一工程では、図示しないアンコイラ等から引き出された素材となる金属板に、プレスによる打ち抜き加工を施し、図2に示す様な円板状の素材19を得る。 First, in the first step, a metal plate with a drawn from uncoiler (not shown) or the like material, subjected to punching by a press to obtain a disk-shaped material 19, such as shown in FIG.

続く第二工程では、この素材19に絞り加工を施す事により、この素材19の中央部乃至径方向中間部をこの素材19の厚さ方向に関し片側に膨らませて、図3に示す様な第一中間素材20とする。 Followed by the second step, by subjecting the drawing process to the material 19, the central portion to the radially intermediate portion of the material 19 is inflated to one side respect the thickness direction of the material 19, first, such as that shown in FIG. 3 and intermediate material 20. 尚、この第二工程では、図示しない下型と上型との間で上記素材19の中央部を厚さ方向片側(図3の下側)に押圧し、中央部がドーム状に膨らんだ、上記第一中間素材20とする。 Incidentally, in the second step, to press the central portion of the material 19 in the thickness direction on one side (lower side in FIG. 3) between the lower mold and the upper mold (not shown), the central portion is bulged in a dome shape, and the first intermediate material 20.

続く第三工程では、この第一中間素材20の中央部に、上記第二工程と反対向きの絞り加工を施す。 Continues in the third step, the central portion of the first intermediate material 20 is subjected to oppositely directed drawing and the second step. この場合に、この第一中間素材20の径方向外寄り部分が径方向外方に変位する事を阻止しておく。 In this case, it keeps blocked that radially outboard portion of the first intermediate material 20 is displaced radially outward. この為に本実施例の場合には、図4の(A)に示す様に、上記第一中間素材20の外径寄り部分を上下1対の抑え型21a、21bにより強く挟持するか、或は、図4の(B)に示す様に、上記第一中間素材20の外周縁を固定台22の段差面23に突き当てると共に、抑え枠24によりこの第一中間素材20の外径寄り部分が浮き上がる事を防止する。 Or Therefore in the case of this embodiment, the as shown in FIG. 4 (A), is strongly sandwiched by the first intermediate material 20 of the outer 径寄 Ri moiety upper and lower pair of restraining type 21a, 21b, some is, as shown in FIG. 4 (B), the outer 径寄 Ri portion of the first outer peripheral edge of the intermediate material 20 with abutted against the stepped surface 23 of the fixed base 22, restraining frame 24 by the first intermediate material 20 to prevent that from being lifted. そして、この状態で、上述の様な反対向きの絞り加工を施し、厚さ方向に関する中央部の位置を、上記径方向外寄り部分に実質的に一致させて(厚さ方向に関する中央部の位置と径方向外寄り部分とをほぼ同一平面上に位置させて)、図4に示す様な第二中間素材25とする。 Then, in this state, subjected to oppositely directed drawing, such as described above, the position of the center in the thickness direction, the position of the center in the (thickness direction substantially matched to the radially outer portion close substantially it is positioned in the same plane and radially outboard portion and in), and the second intermediate material 25, such as shown in FIG. この第二中間素材25は、片面(図4の下面)の径方向中間部に、全周に亙って連続する、断面円弧形で土手状の凸部26を備えたものである。 This second intermediate material 25, the radial direction intermediate portion of the one surface (lower surface in FIG. 4), continuously over the entire circumference, but having a bank-shaped protruding portion 26 in a circular arc cross sectional shape.

続く第四工程では、上記第二中間素材25に打ち抜き加工を施す。 It followed in the fourth step, punching to the second intermediate material 25. そして、この第二中間素材25の中央部に、正方形等、非円形の位置決め孔27を形成すると共に、径方向中間部分に、ポケットを構成する為の複数の下孔28、28を、円周方向に関して間欠的に、それぞれ放射方向に形成して、図5に示す様な第三中間素材29とする。 Then, the central portion of the second intermediate material 25, a square or the like, to form a non-circular positioning holes 27, radially intermediate portion, a plurality of lower holes 28, 28 for forming the pockets, the circumferential intermittently relation to the direction, each formed in a radial direction, and the third intermediate material 29, such as shown in FIG.
本実施例の場合、上記1個の位置決め孔27と上記複数の下孔28、28とを同時に打ち抜く事で、この位置決め孔27に対するこれら各下孔28、28の位置関係を厳密に規制している。 In this embodiment, by punching said one positioning hole 27 and the plurality of the lower hole 28 at the same time, the positional relationship of each of these pilot holes 28, 28 for the positioning hole 27 and tightly regulated there.

続く第五工程では、上記第三中間素材29の径方向中間部に曲げ加工を施す事により、この径方向中間部の径方向に関する断面形状を屈曲させる。 It continues in the fifth step, by subjecting the bending in the radial direction intermediate portion of the third intermediate material 29, bending the cross-sectional shape in the radial direction of the radially intermediate portion. この際、上記第三中間素材29の径方向外寄り部分が径方向外方に変位する事を阻止すると共に、同じく径方向内寄り部分が径方向内方に変位する事を阻止する。 In this case, the blocking that radially outboard portion of the third intermediate material 29 is displaced radially outward, likewise radially inboard portion prevents that displaced radially inward. この為に、図6に示す様に、上記第三中間素材29の内径寄り部分を上下1対の抑え型30a、30bにより強く挟持する。 For this purpose, as shown in FIG. 6, the third inner diameter portion near the intermediate material 29 paired upper and lower restraining type 30a, strongly held by 30b. 又、この第三中間素材29の外径寄り部分に就いては、図6の(A)に示す様に、上下1対の抑え型31a、31bにより強く挟持するか、或は同図の(B)に示す様に、上記第三中間素材29の外周縁を固定台32の段差面33に突き当てると共に、抑え枠34によりこの第三中間素材29の外径寄り部分が浮き上がる事を防止する。 Also, in regard to the outer 径寄 Ri portion of the third intermediate material 29, as shown in (A) of FIG. 6, the upper and lower pair of restraining type 31a, or strongly clamped by 31b, or the figure ( as shown in B), with abutted the outer peripheral edge of the third intermediate material 29 in the stepped surface 33 of the fixing stand 32, by suppressing frame 34 to prevent the floating outer 径寄 Ri portion of the third intermediate material 29 . 尚、この第三中間素材29の内径寄り部分が径方向内方に変位するのを抑える構造に就いても、上記図6の(B)で外径寄り部分の変位を抑えた構造と同様に構成する事もできる。 Also concerning the structure to suppress the displacement in the inner diameter near portion radially inward of the third intermediate material 29, similarly to the structure that suppresses the displacement of the outer 径寄 Ri part of FIG 6 (B) It can also be configured.

上記第五工程では、上述の様にして、上記第三中間素材29の内外両周縁部が径方向に変位するのを阻止した状態で、この第三中間素材29の径方向中間部に、プレス加工、絞り加工等の塑性加工を施して、この径方向中間部の断面形状を、全周に亙って同じ波形にする。 Above the fifth step, in the manner described above, in a state that prevents the inner and outer peripheral portions of the third intermediate material 29 is displaced in the radial direction, the radial direction intermediate portion of the third intermediate material 29, the press processing, is subjected to plastic working drawing and the like, the sectional shape of the radially intermediate portion, the same waveform over the entire circumference. この様な、径方向中間部の塑性加工は、図6の(A)→(B)→(C)の順番に行ない、この図6の(C)に示す様な第四中間素材35とする。 Such plastic working in the radial direction intermediate portion is performed in the order of FIG. 6 (A) → (B) → (C), the fourth intermediate material 35, such as shown in (C) of FIG. 6 . この第四中間素材35の径方向中間部には、中央湾曲部36と、外径側湾曲部37と、内径側湾曲部38とが、それぞれ全周に亙って形成されている。 The fourth radially intermediate portion of the intermediate material 35 has a central curved portion 36, an outer diameter side curved portion 37, and the inner diameter side curved portion 38 is formed over the entire periphery, respectively. このうちの中央湾曲部36は、上記径方向中間部のうちで径方向中央部に位置し、軸方向片側(図6の上側)が凸曲面となったアーチ状である。 Central bending portion 36 of which are located on the radially central portion among the radially intermediate portion, the axial direction one side (upper side in FIG. 6) is arcuate having a convex curved surface. 又、上記外径側湾曲部37は、上記中央湾曲部36の径方向外側(図6の右側)に隣接して軸方向他側(図6の下側)が凸曲面となった逆アーチ状である。 Also, the outside diameter side curved portion 37, radially outward of the central bending portion 36 other axial side adjacent to (on the right side of FIG. 6) (the lower side in FIG. 6) is opposite arched with a convex curved surface it is. 更に、上記内径側湾曲部38は、上記中央湾曲部36の径方向内側(図6の左側)に隣接して軸方向他側が凸曲面となった逆アーチ状である。 Furthermore, the inner diameter side curved portion 38 is opposite arcuate axial other side is a convex curved surface adjacent the radially inner side of the central bending portion 36 (the left side in FIG. 6).

続く第六工程では、上記第四中間素材35の径方向中間部を軸方向両側から押圧する事により、上記中央、外径側、内径側各湾曲部36〜38の頂部を押し潰す。 Continued In a sixth step, by pressing the radial direction intermediate portion of the fourth intermediate material 35 from both axial sides, crushing the central, outer diameter, the top portion of the inner diameter side respective bending portions 36-38. 即ち、図7に示す様に、それぞれの端面を互いに平行な平坦面とした1対の押型39a、39b同士の間で上記第四中間素材35の径方向中間部を強く挟持する。 That is, as shown in FIG. 7, a pair of pressing die 39a in which the respective end surfaces parallel to each other flat surface and, to strongly sandwich the radial direction intermediate portion of the fourth intermediate material 35 between 39b together. この際、一方(図7の上方)の押型39aの先端面を上記中央湾曲部36の頂部に、他方(図7の下方)の押型39bの先端面を上記外径側、内径側両湾曲部37、38の頂部に、それぞれ全周に亙って突き当てる。 At this time, whereas the top of the central bending portion 36 distal end surface of the pressing die 39a of (upward in FIG. 7), while the outside diameter side distal end surface of the pressing die 39b of (downward in FIG. 7), the inner diameter side both the curved portion on top of 37, 38, abutted against over the entire periphery, respectively. そして、上記両押型39a、39bの先端面同士を、得るべき保持器1a、1bの厚さ寸法T(図1参照)に見合う距離まで互いに近づける。 Then, close to each other to a distance commensurate with the both pressing die 39a, the tip end faces of the 39 b, get to the cage 1a, 1b of the thickness T (see FIG. 1). この結果、上記中央、外径側、内径側各湾曲部36〜38の頂部が押し潰されて、それぞれの頂部に対応する部分に、それぞれ中央、外径側、内径側各平板部8〜10を形成された第五中間素材40とする。 As a result, the central, outer diameter side, is squashed top of the inner diameter side respective bending portions 36 to 38, the portions corresponding to the respective top, respectively the central, outer diameter, inner diameter side each flat plate portions 8-10 the fifth intermediate material 40 formed a.

続く第七工程では、前述の図5に示した第四工程で形成した、前記各下孔28、28の内周縁のうち、これら各下孔28、28から造られた各ポケット5(図1参照)内に保持される円筒ころ6(図13〜15参照)の転動面と接触する部分の性状を整えて、第六中間素材41とする。 Continued In a seventh step, it was formed in the fourth step shown in FIG. 5 described above, among the inner peripheral edge of each of the lower holes 28, 28, each pocket made from each of these pilot holes 28, 28 5 (FIG. 1 cylindrical rollers 6 are held in the reference) (established a property of the portion in contact with the rolling surface of the reference 13-15), and the sixth intermediate material 41. この為に本工程では、その表面を平滑面とした扱き治具を上記各下孔28、28内に押し込んで、この扱き治具の表面により扱かれた(強く押し付けられつつ擦られた)部分を平滑面とする、扱き加工を施す。 In this process for this purpose, push the squeezing jig and the surface and the smooth surface to the respective lower holes 28, 28, was squeezed by the surface of the ironing jig (rubbed strongly pressed against while) moiety a and smooth surface, subjected to ironing work. この様な扱き加工を施す部分は、図8の(A)(B)に斜格子を付した、上記中央、外径側、内径側各平板部8〜10の円周方向両端縁部で上記各ポケット5内に突出した部分のうちで、上記円筒ころ6の転動面に対向する面とする。 Portions subjected to such ironing processing, denoted by the cross hatching in (A) (B) of FIG. 8, the central, outer diameter, the circumferentially opposite end edges of the inner diameter side each flat plate portions 8-10 of portion protruding in the respective pockets 5, and a surface facing the rolling surface of the cylindrical rollers 6. この様な扱き加工を施す事により、上記各ポケット5内に保持された上記円筒ころ6が、これら各ポケット5内で円滑に転動し、且つ、転動に伴って転動面に擦り傷等の損傷を受けにくくなる。 By performing such ironing processing, the cylindrical rollers 6 held in the pockets 5 are smoothly rolled respective pockets within 5, and, abrasions or the like on the rolling surface with the rolling less susceptible to damage.

続く第八工程では、図9に示す様に、上記第六中間素材41の外周縁部と内周縁部とに存在する余肉部42a、42bを除去して、第七中間素材43とする。 Followed by the eighth step, as shown in FIG. 9, the sixth intermediate outer periphery of the material 41 and the inner peripheral edge portion and the excess thickness portion 42a present, is removed 42b, and the seventh intermediate material 43. この様な第八工程は、例えばプレスによる打ち抜き加工により行なう。 Such eighth step, for example, carried out by punching using a press. 外径側の余肉部42aを除去する作業と、内径側の余肉部42bを除去する作業とは、前後して行なっても良いが、同時に行なえば、製造作業の能率化を図れる。 A work of removing the excess thickness portion 42a of the outer diameter side, and the work of removing the excess thickness portion 42b of the inner diameter side, may be performed one after, be performed simultaneously, thereby the efficiency of the manufacturing operation.

更に、続く第九工程では、上記第七中間素材43の内外両周縁部に曲げ加工を施して、これら両周縁部を内径側、外径側両リム部とする。 Furthermore, continues in the ninth step, is subjected to bending in the inner and outer peripheral portions of the seventh intermediate material 43, to both of these peripheral portion radially inner side, an outer diameter side both the rim portion. 内径側リム部の加工作業と外径側リム部の加工作業とは前後して行なうが、何れを先に行なうかは自由である。 The machining operation of the machining operations and the outer diameter side rim portion of the inner diameter side rim portion carried by the front and rear, but any or performed earlier is free. 本実施例の場合には、内径側リム部の加工作業を先に行なって、上記第七中間素材43の内周縁部に、図10の(A)〜(C)に示す様な内径側リム部2a、2b、2cを形成する。 In the case of the embodiment, by performing a machining operation on the inner diameter side rim portion above, the seventh to the inner peripheral edge portion of the intermediate material 43, the inner diameter side rim such as shown in (A) ~ (C) of FIG. 10 parts 2a, 2b, to form a 2c. この内径側リム部2a、2b、2cの形状は、断面係数が大きい等、必要とする強度を得られるものであれば特に問わない。 The inner diameter side rim portion 2a, 2b, 2c shape is like the section modulus is large, not particularly limited as long as it is obtained a strength in need. 図10の(A)に示す様な断面U字形の内径側リム部2aでも、同(B)に示す様な金属板を密に重ね合わされた内径側リム部2bでも、同(C)に示す様な径方向内方に延びた内径側リム部2cでも良い。 FIG even inner diameter side rim portion 2a of the U-shaped cross section, such as shown in (A) of 10, even closely superimposed inner diameter side rim portion 2b of the metal plate, such as shown in (B), shown in (C) may be the inner diameter side rim portion 2c extending radially inward like.

本実施例の場合には、上述の様な内径側リム部2a、2b、2cを形成した後、上記第七中間素材43の外周縁部に、図11の(A)〜(C)に示す様な外径側リム部3a、3b、3cを形成する。 In the case of this embodiment, such an inner diameter side rim portion 2a of the above, 2b, after forming the 2c, the outer peripheral edge of the seventh intermediate material 43, shown in (A) ~ (C) of FIG. 11 such radially outer rim portion 3a, 3b, form a 3c. この外径側リム部3a、3b、3cの形状に就いても、断面係数が大きい等、必要とする強度を得られるものであれば特に問わない。 The outer diameter side rim portion 3a, 3b, also concerning the shape of the 3c, etc. section modulus is large, not particularly limited as long as it is obtained a strength in need. 図11の(A)に示す様な断面U字形の外径側リム部3aでも、同(B)に示す様な金属板を密に重ね合わされた外径側リム部3bでも、同(C)に示す様な径方向外方に延びた外径側リム部3cでも良い。 Even outside diameter side rim portion 3a of the U-shaped cross section, such as shown in FIG. 11 (A), even outer diameter side rim portion 3b which is closely superimposed metal plates such as shown in (B), the (C) even outside diameter side rim portion 3c extending radially outward, such as shown in better. 又、図示の例では、内径側、外径側両リム部2a、2b、2c、3a、3b、3cの断面形状を、1個の保持器1bのうちで互いに統一している(対称形状としている)が、1個の保持器1bのうちで内径側、外径側両リム部2a、2b、2c、3a、3b、3cの断面形状が互いに異なっても良い。 Further, in the illustrated example, the inner diameter side, the outer diameter side both the rim portion 2a, 2b, 2c, 3a, 3b, and 3c of the cross-sectional shape, as (symmetrical shape are unified with each other among the one retainer 1b there) is, the inner diameter side of the one retainer 1b, the outer diameter side both the rim portion 2a, 2b, 2c, 3a, 3b, the cross-sectional shape of 3c may be different from each other.

上述の様に構成する、本実施例のスラスト円筒ころ軸受用保持器の製造方法によれば、前述の図1に示した様な、中央平板部8と内径側、外径側両連続部11a、11b、12a、12bとの交差角度を、それぞれ90度以下とした構造を、型の耐久性を確保する事により、低コストで造れる。 Constructed as described above, according to the method of manufacturing the thrust cylindrical roller bearing cage of the present embodiment, such as shown in FIG. 1 described above, the central flat portion 8 and the inner diameter side, the outer diameter bicontinuous portion 11a , 11b, 12a, the crossing angle between 12b, and structure than each 90 degrees, by ensuring the durability of the mold, able to build a low cost. 即ち、図5に示した第四工程で、各ポケット5(図8〜11、13〜15参照)を形成する為の各下孔28、28を、径方向中間部が湾曲した程度の第二中間素材25の段階で打ち抜く為、打ち抜きの為の型(特にダイス)に大きな応力が加わりにくい。 That is, in the fourth step shown in FIG. 5, each lower hole 28, 28 for forming each pocket 5 (see FIG. 8~11,13~15), to the extent that the intermediate portion is radially curved second for punching out at the stage of the intermediate material 25, the mold for punching (especially dice) is a large stress hard to join. 即ち、上記第四工程で上記各下孔28、28を打ち抜く作業は、上記第二中間素材25を構成する金属板の厚さ寸法分を打ち抜くのみで良い。 That is, the work of punching out the fourth step in the above prepared hole 28 may only punch the thickness dimension of the metal plate constituting the second intermediate material 25. この為、前述した従来の製造方法の様に、内径側、外径側両連続部11、12(図14参照)をその幅方向に剪断する場合に比べて、容易に行なえる。 Therefore, as in the conventional manufacturing method described above, as compared with a case where shearing inner diameter side, the outer diameter bicontinuous portion 11 (see FIG. 14) in the width direction, easily. 又、上記各下孔28、28の平面積が広い為、これら各下孔28、28の打ち抜く為の型(パンチ)の断面積を広くできて、この型の耐久性を確保できる。 Further, since the plane area of ​​the respective lower holes 28, 28 is wide, it can widen the sectional area of ​​the mold for punching these respective lower holes 28, 28 (punch) and secure the durability of this type.

上述の様に、内径側、外径側両連続部11a、11b、12a、12bを形成する以前に上記各下孔28、28を打ち抜き形成した場合、その後に各中間素材の径方向中間部の断面形状を波形に加工する過程で、上記各下孔28、28の形状が多少なりとも歪む可能性がある。 As described above, the inner diameter side, the outer diameter bicontinuous portion 11a, 11b, 12a, prior to forming a 12b when forming punching the respective lower holes 28, 28, then the radially intermediate portion of the intermediate material in the course of processing the cross-sectional shape in the waveform, there is a possibility that the shape of each preliminary hole 28 is distorted in any way. この場合でも、これら各下孔28、28の内周縁のうち、これら各下孔28、28から造られた各ポケット5の内周縁でこれら各ポケット5内に保持される各円筒ころ6の転動面と接触する部分の性状を、前述の図8に示した第七工程で整えるので、上記各ポケット5内に保持される各円筒ころ6(図13〜15参照)の転動を円滑に行なわせる事ができる。 In this case, among these the inner peripheral edge of the prepared hole 28, rotation of the cylindrical rollers 6 are held in the respective pockets 5 at an inner periphery of each pocket 5 made from each of these pilot holes 28, 28 the properties of the portion in contact with the sliding surface, since the trim in the seventh step shown in FIG. 8 described above, smooth rolling of each cylindrical roller 6 (see FIG. 13-15) to be held in the pockets 5 it can be performed. 又、これら各円筒ころ6の転動面に擦り傷等の損傷を発生させる事もない。 Further, it nor cause a damage such as scratches on these rolling surface of each cylindrical roller 6.

又、前記中間板部4aの断面形状を所望のものに加工する場合も、1対の型により一挙に最終形状を得るのではなく、前述の図6に示した第五工程で造った中央、内径側、外径側各湾曲部36〜38の頂部を、前述の図7に示した第六工程で押し潰す事により、それぞれ中央、外径側、内径側各平板部8〜10に加工する。 Moreover, even when processing a cross-sectional shape of the intermediate plate portion 4a to a desired one, rather than obtaining the stroke into the final shape by a pair of mold, the central made with the fifth step shown in FIG. 6 above, the inner diameter side, the top portion of the outer diameter side respective bending portions 36 to 38, by squashing in the sixth step shown in FIG. 7 described above, processing center, the outer diameter side, the inner diameter side each flat plate portions 8-10 respectively . この為、上記中間板部4aの断面形状を所望のものに加工する為に使用する型として、1a、1b保持器の径方向に関する幅寸法が小さく、同じく軸方向に関する長さ寸法が大きいものを使用する必要がない。 Therefore, as a mold to be used to process the sectional shape of the intermediate plate portion 4a to a desired one, 1a, the width dimensions for small radial 1b cage, the same thing length dimension in the axial direction is large there is no need to use. 即ち、上記中央、外径側、内径側各湾曲部36〜38を形成する為の型は、その幅寸法が、基部で広く、先端部に向けて次第に小さくなる様な形状のものを使用できる。 That is, the central, outer diameter, the type for forming a radially inner side the curved portions 36 to 38 has a width dimension wider at the base, those gradually becomes smaller such shape toward the tip portion can be used . この様な型は、幅が狭く、しかも軸方向に関する長さ寸法が大きな型に比べて丈夫で、耐久性を確保し易い。 Such type is narrower, moreover length dimension in the axial direction and durable than the large mold, it is easy to ensure durability. 又、上記中央、外径側、内径側各湾曲部36〜38の頂部を押し潰す為の型は、先端面が平坦な、極めて強度の高いものである。 Further, the central, outer diameter, the type for crushing the top of the inner diameter side respective bending portions 36 to 38, the distal end surface is flat, it is an extremely high strength ones. この為、上記中間板部4aの断面形状を所望のものに加工する為に使用する、何れの型にも、大きな応力が加わりにくい。 Therefore, to use to process the sectional shape of the intermediate plate portion 4a to a desired one, to any type, large stress hardly applied. この結果、金属板からスラスト円筒ころ軸受用の保持器1a、1bを造る為に使用する複数の型のうちの何れの型にも、大きな応力が加わる事を防止できる。 As a result, the cage 1a for axial cylindrical roller of a metal plate, to any type of a plurality of types to be used to produce 1b, can be prevented that the large stress is applied. そして、これら各型の耐久性を確保し、上記保持器1a、1bの製造コストを低く抑えられる。 Then, to ensure the durability of each of these types, it is kept low the manufacturing cost of the retainer 1a, 1b.

図12は、請求項7に対応する実施例を示している。 Figure 12 shows an embodiment corresponding to claim 7. 本実施例の場合には、第四工程で打ち抜く各下孔28aを、各ポケットのうちの一部で、当該部分の内周縁がこれら各ポケット内に保持される円筒ころの転動面と接触しない部分に対応する部分のみとしている。 In the case of the embodiment, the respective lower holes 28a is punched in the fourth step, in some of the pockets, in contact with the inner peripheral edge rolling surface of cylindrical rollers held in these in each pocket of the partial We have to part only with the corresponding to the portion not. 即ち、1個のポケットを構成する為の上記下孔28aを、径方向に関して複数(図示の場合には4個)に分割し、図12の実線で囲まれた部分のみを、上記第四工程で打ち抜く。 That is, the lower hole 28a for constituting one pocket is divided into a plurality (four in the illustrated case) in the radial direction, only the portion enclosed by the solid line in FIG. 12, the fourth step I punched in. この図12で実線と鎖線とにより囲まれた残り部分の打ち抜きは、第七工程で行ない、打ち抜きに続いてこの残り部分に扱き治具を押し付けて、この残り部分の内周縁の性状を整える。 Punching of the remaining portion surrounded by the 12 by the solid line and chain line, performed in the seventh step, following the punching presses the jig ironing in this rest, adjust the properties of the inner peripheral edge of the remaining portion. その他の工程に就いては、上述した実施例2と同様であるから、重複する説明は省略する。 For the other steps, because it is similar to the second embodiment described above, the redundant description will be omitted.

本発明によるスラスト円筒ころ軸受用の保持器の実施例の2例を示す断面図。 Sectional view showing two examples of embodiment of the retainer for a thrust cylindrical roller bearing according to the invention. 本発明によるスラスト円筒ころ軸受用の保持器の製造方法の第一工程で造られる素材の半部断面図。 Half sectional view of the material to be produced in the first step of the manufacturing method of the cage for the thrust cylindrical roller bearing according to the invention. 同じく第二工程で造られる第一中間素材の半部断面図。 Also semi-sectional view of the first intermediate material which is made in the second step. 同じく第三工程で第一中間素材から第二中間素材を造る状態の2例を示す半部断面図。 Also semi-sectional view showing two examples of a state in which the first intermediate material in the third step create a second intermediate material. 同じく第四工程で第二中間素材から第三中間素材を造る状態及び造られた第三中間素材を示す半部断面図及び部分平面図。 Also semi-sectional view and a partial plan view showing a state and made the third intermediate material from the second intermediate material in the fourth step create a third intermediate material. 同じく第五工程で第三中間素材から第四中間素材を造る状態を順番に示す半部断面図。 Also semi-sectional view showing a state in which create a fourth intermediate material from the third intermediate material in the fifth step in order. 同じく第六工程で第四中間素材から第五中間素材を造る状態を示す半部断面図。 Also semi-sectional view showing a fourth intermediate material in the sixth step the state to create a fifth intermediate material. 同じく第七工程で、下孔の内周縁のうちで扱き加工を施すベき部分を示す半部断面図及び部分平面図。 Also in the seventh step, the semi-sectional view and a partial plan view showing the base out portion subjected to working ironing among the inner circumferential edge of the pilot hole. 同じく第八工程で第六中間素材の内外両周縁部を除去して第七中間素材とする状態を示す半部断面図。 Also semi-sectional view showing a state in which in the eighth step to remove the inner and outer peripheral portions of the sixth intermediate material and seventh intermediate material. 同じく第九工程で形成した、内径側リム部の断面形状の3例を示す半部断面図。 Also formed in the ninth step, the semi-sectional view showing a third example of the cross-sectional shape of the inner diameter side rim portion. 同じく第九工程で形成した、外径側リム部の断面形状の3例を示す半部断面図。 Also formed in the ninth step, the semi-sectional view showing a third example of the cross-sectional shape of the outer diameter side rim portion. 本発明の実施例3の第四工程で得られた第三中間素材を示す、部分平面図。 It shows a third intermediate material obtained in the fourth step of Example 3 of the present invention, partial plan view. 従来から知られているスラスト円筒ころ軸受用保持器の部分平面図。 Partial plan view of the thrust cylindrical roller bearing cage conventionally known. 同じく半部断面図。 Also half cross-sectional view. 図13の拡大X−X断面図。 Enlarged sectional view taken along line X-X in FIG. 13. 従来の製造方法を工程順に示す断面図。 Sectional view showing a conventional manufacturing method in order of steps.

符号の説明 DESCRIPTION OF SYMBOLS

1、1a、1b 保持器 2、2a、2b、2c 内径側リム部 3、3a、3b、3c 外径側リム部 4、4a 中間板部 5 ポケット 6 円筒ころ 7 柱部 8 中央平板部 9 外径側平板部 10 内径側平板部 11、11a、11b 内径側連続部 12、12a、12b 外径側連続部 13 素材 14 第一中間素材 15 第二中間素材 16 第三中間素材 17 第四中間素材 18 第五中間素材 19 素材 20 第一中間素材 21a、21b 抑え型 22 固定台 23 段差面 24 抑え枠 25 第二中間素材 26 凸部 27 位置決め孔 28、28a 下孔 29 第三中間素材 30a、30b 抑え型 31a、31b 抑え型 32 固定台 33 段差面 34 抑え枠 35 第四中間素材 36 中央湾曲部 37 外径側湾曲部 38 内径側湾曲部 39a、39b 押型 1, 1a, 1b retainer 2, 2a, 2b, 2c inner diameter side rim portion 3, 3a, 3b, 3c outside diameter side rim portion 4,4a intermediate plate 5 pocket 6 cylindrical rollers 7 column portions 8 central flat portion 9 outside diameter side flat plate portion 10 the inner diameter side flat plate portions 11, 11a, 11b the inner diameter side continuous portion 12, 12a, 12b radially outer continuous portion 13 material 14 first intermediate material 15 a second intermediate material 16 a third intermediate material 17 a fourth intermediate material 18 fifth intermediate material 19 material 20 first intermediate material 21a, 21b is suppressed type 22 fixing stand 23 step surface 24 suppresses frame 25 second intermediate material 26 protrusion 27 positioning holes 28,28a under the hole 29 third intermediate material 30a, 30b suppressing type 31a, 31b suppressing type 32 fixing board 33 stepped surface 34 suppresses frame 35 fourth intermediate material 36 central bending portion 37 the outer diameter side curved portion 38 the inner diameter side curved portion 39a, 39b pressing die 0 第五中間素材 41 第六中間素材 42a、42b 余肉部 43 第七中間素材 0 fifth intermediate material 41 sixth intermediate material 42a, 42b surplus meat section 43 seventh intermediate material

Claims (8)

  1. 金属板を曲げ形成する事により一体に造られて、内周縁部に存在する、全周に亙って連続する円環状の内径側リム部と、外周縁部に存在する、この内径側リム部と同心で全周に亙って連続する円環状の外径側リム部と、この外径側リム部と上記内径側リム部との間に存在する、断面形状が径方向に関して屈曲した中間板部と、この中間板部に円周方向に関して間欠的に、それぞれ放射方向に形成された複数のポケットとを備え、上記中間板部は、径方向中間部で軸方向一端寄り部分に形成された中央平板部と、上記外径側リム部の径方向内側に隣接する軸方向他端寄り部分に形成された外径側平板部と、上記内径側リム部の径方向外側に隣接する軸方向他端寄り部分に形成された内径側平板部と、この内径側平板部の外周縁と上記中央平板部 Built together by forming bent metal plate, present on the inner periphery, and the inner diameter side rim portion of the annular shape continuously over the entire circumference, present in the outer peripheral edge portion, the inner diameter side rim portion and the outer diameter side rim portion of the annular shape continuously over the entire circumference concentric, exists between the outer diameter side rim portion and the inner diameter side rim portion, an intermediate plate which cross section is bent in the radial direction and parts, intermittently in the circumferential direction to the intermediate board, and a plurality of pockets formed in respective radially the intermediate plate portion is formed in the axial end portion close in the radial direction intermediate portion a central flat portion, and the outer diameter side flat plate portion formed in the axial direction near the other end portion adjacent to the radially inner side of the outer diameter side rim portion, the other axial adjacent radially outward of the inner diameter side rim portion and the end portion close to the formed inner diameter side flat plate portion, the outer peripheral edge and the central flat portion of the inner diameter side flat plate portion 内周縁とを連続させる内径側連続部と、この中央平板部の外周縁と上記外径側平板部の内周縁とを連続させる外径側連続部とから成るものであるスラスト円筒ころ軸受用保持器に於いて、上記中央平板部と上記内径側、外径側両連続部との交差角度が、それぞれ90度以下である事を特徴とするスラスト円筒ころ軸受用保持器。 And the inner diameter side continuous portion to the inner peripheral edge is a continuous, holding the central flat portion axial cylindrical roller is made of an outer diameter side continuous portion to the outer periphery and the inner periphery of the outer diameter side flat plate portion is continuous in vessels, the central flat portion and the inner diameter side, the angle of intersection between the outer diameter side bicontinuous portion, the cage for a thrust cylindrical roller bearing, characterized in that each 90 degrees or less.
  2. 内径側、外径側両連続部同士の間隔が、中央平板部から離れる程小さくなる、請求項1に記載したスラスト円筒ころ軸受用保持器。 The inner diameter side, the interval between the outer diameter side bicontinuous portion becomes smaller as away from the central flat portion, the cage for a thrust cylindrical roller bearing according to claim 1.
  3. 各ポケット内に保持される円筒ころの長さLと直径Dとの比L/Dが1以下である、請求項1〜2の何れかに記載したスラスト円筒ころ軸受用保持器。 The ratio L / D between the length L and the diameter D of the cylindrical rollers which are retained in the respective pockets is 1 or less, the cage for a thrust cylindrical roller bearing according to either one of claims 1-2.
  4. 素材となる金属板から円板状の素材を打ち抜く第一工程と、 A first step of punching out a disc-shaped material of a metal plate as a material,
    この素材に絞り加工を施す事により、この素材の中央部乃至径方向中間部をこの素材の厚さ方向に関し片側に膨らませて第一中間素材とする第二工程と、 By performing drawing in the material, a second step of the central portion to the radially intermediate portion of this material to the first intermediate material is inflated the side relates the thickness direction of the material,
    この第一中間素材の中央部に、上記第二工程と反対向きの絞り加工を施す事により、第二中間素材とする第三工程と、 The central portion of the first intermediate material, by subjecting the opposite of drawing and the second step, a third step of the second intermediate material,
    上記第二中間素材に打ち抜き加工を施す事により、この第二中間素材の中央部に非円形の位置決め孔を形成すると共に、径方向中間部分にポケットを構成する為の複数の下孔を、円周方向に関して間欠的に、それぞれ放射方向に形成して第三中間素材とする第四工程と、 By punching into the second intermediate material, to form a non-circular positioning hole in a central portion of the second intermediate material, a plurality of lower holes for forming the pocket in the radial direction intermediate portion, the circle a fourth step of intermittently, the third intermediate material are respectively formed in the radial direction with respect to the circumferential direction,
    上記第三中間素材の径方向中間部に曲げ加工を施す事により、この径方向中間部の径方向に関する断面形状を屈曲させ、この径方向中間部のうちで径方向中央部に位置し、軸方向片側が凸曲面となった中央湾曲部と、この中央湾曲部の径方向外側に隣接して軸方向他側が凸曲面となった外径側湾曲部と、この中央湾曲部の径方向内側に隣接して軸方向他側が凸曲面となった内径側湾曲部とを備えた第四中間素材とする第五工程と、 By applying bending a radially intermediate portion of the third intermediate material, the cross-sectional shape in the radial direction of the radially intermediate portion is bent, and positioned radially central portion among the radially intermediate portion, the shaft a central curved portion direction on one side is a convex curved surface, and the outer diameter side curved portion other axial side is a convex curved surface adjacent the radially outer side of the central curved portion, radially inwardly of the central bending portion a fifth step of the other axial side and a fourth intermediate material having a inner diameter side curved portion becomes convex curved surface adjacent,
    この第四中間素材の径方向中間部を軸方向両側から押圧する事により、上記中央、外径側、内径側各湾曲部の頂部を押し潰し、それぞれ中央、外径側、内径側各平板部として第五中間素材とする第六工程と、 By pressing the radial direction intermediate portion of the fourth intermediate material from both axial sides, the central, outer diameter, crushed top of the inner diameter side each bend, the center respectively, outer diameter, inner diameter side each plate portion and a sixth step of the fifth intermediate material as,
    上記各下孔の内周縁のうち、上記各ポケット内に保持される円筒ころの転動面と接触する部分の性状を整えて第六中間素材とする第七工程と、 Of the inner peripheral edge of the respective lower holes, a seventh step of the sixth intermediate material established a property of the portion in contact with the rolling surface of cylindrical rollers held in the above in each pocket,
    この第六中間素材の内周縁部と外周縁部とに存在する余肉部を除去して第七中間素材とする第八工程と、 A eighth step of the seventh intermediate material to remove the excess thickness portion present on the inner and outer peripheral edges of the sixth intermediate material,
    上記第七中間素材の内外両周縁部のうちの少なくとも一方の周縁部に曲げ加工を施して、これら両周縁部を内径側、外径側両リム部とする第九工程とを備えた、 Subjected to at least one of bending the peripheral edge processing of the inner and outer peripheral portions of the seventh intermediate material, with these two peripheral portion an inner diameter side, and a ninth step of the outer diameter side both rim portions,
    スラスト円筒ころ軸受用保持器の製造方法。 Method of manufacturing a cage for a thrust cylindrical roller bearing.
  5. 第四工程で、1個の位置決め孔と複数の下孔とを同時に打ち抜く、請求項4に記載したスラスト円筒ころ軸受用保持器の製造方法。 In the fourth step, punching and one positioning hole and a plurality of lower holes simultaneously, thrust cylindrical roller producing method of the bearing retainer according to claim 4.
  6. 第七工程で、各下孔の内周縁のうち円筒ころの転動面と接触する部分の性状を整える加工を、その表面を平滑面とした扱き治具をこの部分に押し付ける扱き加工により行なう、請求項4〜5の何れかに記載したスラスト円筒ころ軸受用保持器の製造方法。 In the seventh step, the process to arrange the properties of the portion in contact with the rolling surface of the cylindrical roller of the inner peripheral edge of each lower hole, performed by ironing work of pressing the squeezing jig and the surface and the smooth surface in this portion, method of manufacturing a cage for a thrust cylindrical roller bearing according to any one of claims 4-5.
  7. 第四工程で打ち抜く各下孔は、各ポケットのうちの一部で、当該部分の内周縁がこれら各ポケット内に保持される円筒ころの転動面と接触しない部分であり、残りの部分の打ち抜きは第七工程で行ない、打ち抜きに続いてこの残り部分に扱き治具を押し付けて、この残り部分の内周縁の性状を整える、請求項6に記載したスラスト円筒ころ軸受用保持器の製造方法。 Each pilot hole is punched in the fourth step, in some of the pockets, a portion where the inner peripheral edge of the portion does not contact the rolling surface of cylindrical rollers held in these in each pocket, the rest punching done in the seventh step, by pressing a jig ironing in the rest Following punching, adjust the inner periphery of the properties of this remainder, the method of manufacturing the cage for a thrust cylindrical roller bearing according to claim 6 .
  8. 第七工程を、第八工程の後、第九工程の前に行ない、この第八工程では、第五中間素材の内周縁部と外周縁部とに存在する余肉部を打ち抜く、請求項4〜7の何れかに記載したスラスト円筒ころ軸受用保持器の製造方法。 A seventh step after the eighth step, performed prior to the ninth step, in the eighth step, punching out the excess thickness portions existing and inner and outer peripheral edges of the fifth intermediate material, according to claim 4 method of manufacturing a cage for a thrust cylindrical roller bearing according to any one of to 7.
JP2004086978A 2004-03-24 2004-03-24 And a manufacturing method thereof cage for a thrust cylindrical roller bearing Active JP4483365B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004086978A JP4483365B2 (en) 2004-03-24 2004-03-24 And a manufacturing method thereof cage for a thrust cylindrical roller bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004086978A JP4483365B2 (en) 2004-03-24 2004-03-24 And a manufacturing method thereof cage for a thrust cylindrical roller bearing

Publications (2)

Publication Number Publication Date
JP2005273755A true true JP2005273755A (en) 2005-10-06
JP4483365B2 JP4483365B2 (en) 2010-06-16

Family

ID=35173666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004086978A Active JP4483365B2 (en) 2004-03-24 2004-03-24 And a manufacturing method thereof cage for a thrust cylindrical roller bearing

Country Status (1)

Country Link
JP (1) JP4483365B2 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007247827A (en) * 2006-03-17 2007-09-27 Jtekt Corp Thrust roller bearing
WO2007142001A1 (en) * 2006-06-08 2007-12-13 Ntn Corporation Roller and thrust roller bearing
JP2007327517A (en) * 2006-06-06 2007-12-20 Ntn Corp Thrust roller bearing
JP2009024848A (en) * 2007-07-23 2009-02-05 Jtekt Corp Retainer for thrust needle roller bearings and its manufacturing method
EP2042756A1 (en) 2007-09-28 2009-04-01 JTEKT Corporation Cage, production method for the cage, thrust roller bearing equipped with the cage
WO2009086965A2 (en) * 2008-01-11 2009-07-16 Schaeffler Kg Cage for roller bodies
US7896558B2 (en) 2006-06-06 2011-03-01 Ntn Corporation Thrust roller bearing
KR20120028469A (en) * 2010-09-15 2012-03-23 한라공조주식회사 Manufacturing method for field core of magnetic clutch
WO2014036997A1 (en) * 2012-09-05 2014-03-13 Schaeffler Technologies AG & Co. KG Axial cage for cylindrical rolling bodies
EP2890909A4 (en) * 2012-08-31 2016-07-13 Skf Publ Ab Rolling bearing cage for controlling the position of rolling elements between an inner and an outer raceway in a rolling bearing and method for manufacturing a rolling bearing cage

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4497114B2 (en) * 2006-03-17 2010-07-07 株式会社ジェイテクト Thrust roller bearing
JP2007247827A (en) * 2006-03-17 2007-09-27 Jtekt Corp Thrust roller bearing
US7896558B2 (en) 2006-06-06 2011-03-01 Ntn Corporation Thrust roller bearing
JP4668846B2 (en) * 2006-06-06 2011-04-13 Ntn株式会社 Thrust roller bearing
JP2007327517A (en) * 2006-06-06 2007-12-20 Ntn Corp Thrust roller bearing
WO2007142001A1 (en) * 2006-06-08 2007-12-13 Ntn Corporation Roller and thrust roller bearing
JP2007327596A (en) * 2006-06-08 2007-12-20 Ntn Corp Roller and thrust roller bearing
JP2009024848A (en) * 2007-07-23 2009-02-05 Jtekt Corp Retainer for thrust needle roller bearings and its manufacturing method
US8113719B2 (en) 2007-09-28 2012-02-14 Jtekt Corporation Cage and thrust roller bearing equipped with the cage
JP2009085273A (en) * 2007-09-28 2009-04-23 Jtekt Corp Cage and manufacturing method for the same
EP2042756A1 (en) 2007-09-28 2009-04-01 JTEKT Corporation Cage, production method for the cage, thrust roller bearing equipped with the cage
WO2009086965A2 (en) * 2008-01-11 2009-07-16 Schaeffler Kg Cage for roller bodies
WO2009086965A3 (en) * 2008-01-11 2010-08-12 Schaeffler Technologies Gmbh & Co. Kg Cage for roller bodies
KR20120028469A (en) * 2010-09-15 2012-03-23 한라공조주식회사 Manufacturing method for field core of magnetic clutch
KR101687559B1 (en) 2010-09-15 2016-12-19 한온시스템 주식회사 Manufacturing method for field core of magnetic clutch
EP2890909A4 (en) * 2012-08-31 2016-07-13 Skf Publ Ab Rolling bearing cage for controlling the position of rolling elements between an inner and an outer raceway in a rolling bearing and method for manufacturing a rolling bearing cage
WO2014036997A1 (en) * 2012-09-05 2014-03-13 Schaeffler Technologies AG & Co. KG Axial cage for cylindrical rolling bodies
JP2015528553A (en) * 2012-09-05 2015-09-28 シェフラー テクノロジーズ アー・ゲー ウント コー. カー・ゲーSchaeffler Technologies AG & Co. KG Thrust cage for cylindrical rolling elements
US9404537B2 (en) 2012-09-05 2016-08-02 Schaeffler Technologies AG & Co. KG Axial cage for cylindrical rolling bodies

Also Published As

Publication number Publication date Type
JP4483365B2 (en) 2010-06-16 grant

Similar Documents

Publication Publication Date Title
US6065322A (en) Method and device for forming blanks for bearing rings
JP2005098412A (en) Tapered roller bearing
JP2011144866A (en) Thrust roller bearing
JP2000213546A (en) Cage for thrust needle roller bearing and manufacture thereof
JP2000205273A (en) Retainer of roller bearing and manufacture of retainer
US5826988A (en) Cage for needle roller bearings and method of producing same
JP2005147365A (en) Retainer for conical roller bearing and assembling method of conical roller bearing
JPH07317777A (en) Hub unit bearing outer ring and its manufacture
JP2002210529A (en) Hot forming method for titanium alloy cylindrical parts
JP2001140900A (en) Tapered roller bearing and method of assembly
JP2005147364A (en) Holder for roller bearings, and its manufacturing method
US20020110301A1 (en) Shell type roller bearing assembly
JP2005337352A (en) Two-split outer ring, two-split rolling bearing using the same, and manufacturing method thereof
JP2010125475A (en) Extruding die for forming hollow shape material
JP2003004051A (en) Trail ring of shell shape needle roller bearing and its manufacturing method
JP2009279627A (en) Method for manufacturing inner and outer rings of rolling bearing
JP2007040522A (en) Tapered roller bearing and its manufacturing method, and cage for tapered roller bearing and its manufacturing method
JP2000002247A (en) Manufacture for roller bearing retainer
JP2005233317A (en) Cage for radial needle bearing and manufacturing method thereof
US4765762A (en) Hardened ball bearing assembly
US6298702B1 (en) Method for making seamless wheel rims
JP2003021146A (en) Cage for tapered roller bearing, and manufacturing method of the same
JP2001038440A (en) Manufacture of conic roller bearing cage
US6648519B2 (en) Rolling bearing cage
JP2009041757A (en) Manufacturing method of metal retainer

Legal Events

Date Code Title Description
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20070314

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070314

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090731

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091208

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100202

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100302

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100315

R150 Certificate of patent (=grant) or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130402

Year of fee payment: 3

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130402

Year of fee payment: 3

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140402

Year of fee payment: 4