JP2007303536A - Manufacturing method of retainer for conical roller bearing - Google Patents

Manufacturing method of retainer for conical roller bearing Download PDF

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JP2007303536A
JP2007303536A JP2006131838A JP2006131838A JP2007303536A JP 2007303536 A JP2007303536 A JP 2007303536A JP 2006131838 A JP2006131838 A JP 2006131838A JP 2006131838 A JP2006131838 A JP 2006131838A JP 2007303536 A JP2007303536 A JP 2007303536A
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diameter ring
small
plate
retainer
ring
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Kazuto Kobayashi
一登 小林
Yoshihiko Wada
良彦 和田
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NSK Ltd
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    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings 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
    • F16C19/34—Bearings 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 both radial and axial load
    • F16C19/36—Bearings 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 both radial and axial load with a single row of rollers
    • F16C19/364—Bearings 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 both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
    • F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
    • F16C33/547—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from two parts, e.g. two discs or rings joined together

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a retainer for a conical roller bearing, which can obtain the proper axial dimension of a major diameter ring after being formed by facilitating the bending of the major diameter ring having a short axial dimension. <P>SOLUTION: The manufacturing method of the retainer for the conical roller bearing is provided with a step of forming a circular center hole 9 and a fan-like pocket hole 8 arranged at a plurality of positions separated by a width dimension of a minor diameter ring 31 at the outer peripheral side of the circular center hole 9 gradually widening as extending radially outward for a plate-like blank material 7, a step of forming a circumferential notch 12 separated by the width dimension of the major diameter ring 32 at the outer peripheral side of the pocket hole 8 in the plate-like blank material 7, a step of forming the truncated cone-retainer by bending the radial inside portion of the notch 12 of the plate-like blank material 7 to form a truncated cone shape with a mold 13 having an almost conical shaped mold surface, and a step of separating the retainer from the plate-like blank material 7. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、円錐ころ軸受に組み込んで複数の円錐ころを転動自在に保持するための円錐ころ軸受用保持器の製造方法に関する。   The present invention relates to a method of manufacturing a retainer for a tapered roller bearing that is incorporated in a tapered roller bearing and holds a plurality of tapered rollers in a rollable manner.

円錐ころ軸受に組み込まれる保持器は、小径リングと、該小径リングに対して軸方向に離間配置された大径リングと、を備えて円錐台形状とされており、大径リングと小径リングとの間には大径リングと前記小径リングとを連結する柱部が円周方向に複数箇所配置されている。そして、円周方向に互いに隣り合う各柱部の間には、円錐ころを転動自在に保持するポケット部が形成されている。   The cage incorporated in the tapered roller bearing has a truncated cone shape including a small-diameter ring and a large-diameter ring spaced apart in the axial direction with respect to the small-diameter ring. The large-diameter ring and the small-diameter ring Between them, a plurality of pillar portions connecting the large-diameter ring and the small-diameter ring are arranged in the circumferential direction. And between each pillar part mutually adjacent in the circumferential direction, the pocket part which hold | maintains a tapered roller so that rolling is possible is formed.

従来、このような円錐ころ軸受用保持器を製造するには、まず、板状素材に対して、円形状の中心孔と、該中心孔の外周側における小径リングの幅寸法を隔てた位置に円周方向に沿って複数箇所配置され、径方向外方に次第に幅広となるように延びる扇状のポケット孔と、を打抜き加工等により形成した後、略円錐状の型面を有する金型によって、板状素材の、ポケット孔の外周側における大径リングの幅寸法を隔てた位置の内側部分を円錐台形状に曲げ変形させることにより、大径リング、複数の柱部及び小径リングが一体となった円錐台形状の保持器成形体を成形し、次いで、板状素材から保持器成形体を分離することにより、保持器を得るようにした円錐ころ軸受用保持器の製造方法が知られている（例えば、特許文献１参照）。   Conventionally, in order to manufacture such a tapered roller bearing retainer, first, with respect to a plate-shaped material, a circular center hole and a width dimension of a small diameter ring on the outer peripheral side of the center hole are separated from each other. After forming a fan-shaped pocket hole, which is arranged at a plurality of locations along the circumferential direction and extends so as to become wider radially outward, by punching or the like, by a mold having a substantially conical mold surface, The large-diameter ring, multiple pillars, and the small-diameter ring are integrated by bending and deforming the inner part of the plate-like material at the outer peripheral side of the pocket hole at the width dimension of the large-diameter ring into a truncated cone shape. A method of manufacturing a tapered roller bearing retainer in which a cage is obtained by molding a truncated cone shaped cage molded body and then separating the cage molded body from the plate-shaped material is known. (For example, refer to Patent Document 1).

特開２００５−９０７４０号公報JP-A-2005-90740

しかし、上記特許文献１に記載の製造方法においては、製造された保持器の大径リングの軸方向端面からポケット孔の大径リング側の縁部までの軸方向寸法（大径リングの軸方向寸法Ｔ１：図１参照）が小さい場合には、曲げ成形の際、該軸方向寸法を確保することは難しい。
これについて、図８に従って詳細に説明する。前記軸方向寸法が小さい場合には、略円錐状の型面を有する金型（パンチ１３及びダイス１４）によって、板状素材７における、ポケット孔１０８の外周側での大径リング１３２の幅寸法（板状素材段階の大径リングの径方向寸法）を隔てた位置の内側部分を円錐台形状に曲げ変形させ、当接面１０６を有した柱部１３３を起立させる曲げ成形を行う。この際に、大径リング１３２の外周部（円錐台形状の保持器における大径リングの軸方向端部）の予定位置Ｓ２を基点として柱部１３３が曲がらず、該予定位置Ｓ２より径方向内側、より具体的にはポケット孔１０８の大径リング側の縁部を基点として柱部１３３と大径リング１３２の連結部より曲がり始めることがある。 However, in the manufacturing method described in Patent Document 1, the axial dimension from the axial end surface of the large-diameter ring of the manufactured cage to the edge of the pocket hole on the large-diameter ring side (the axial direction of the large-diameter ring) When the dimension T1: (see FIG. 1) is small, it is difficult to ensure the axial dimension during bending.
This will be described in detail with reference to FIG. When the dimension in the axial direction is small, the width dimension of the large-diameter ring 132 on the outer peripheral side of the pocket hole 108 in the plate-like material 7 by the mold (punch 13 and die 14) having a substantially conical mold surface. Bending is performed to bend and deform the inner part of the position separated by (the radial dimension of the large-diameter ring in the plate-like material stage) into a truncated cone shape, and to erect the column part 133 having the contact surface 106. At this time, the column part 133 does not bend from the planned position S2 of the outer peripheral part of the large-diameter ring 132 (the axial end of the large-diameter ring in the truncated cone-shaped cage), and is radially inward from the planned position S2. More specifically, the edge of the pocket hole 108 on the large-diameter ring side may start to bend from the connecting portion between the column portion 133 and the large-diameter ring 132.

このため、前記曲げ成形の際に、大径リングが予定位置Ｓ２を基点として曲がりにくくなって、保持器成形後の大径リングの軸方向寸法が正規寸法より短くなり、大径リングの適正な軸方向寸法を確保することが難しくなる。   For this reason, at the time of the bending, the large-diameter ring is difficult to bend with the planned position S2 as a base point, and the axial dimension of the large-diameter ring after forming the cage is shorter than the normal dimension, and the appropriate size of the large-diameter ring It becomes difficult to ensure the axial dimension.

本発明は、上述した事情に鑑みてなされたものであり、その目的は、軸方向寸法が短い大径リングでも曲げ成形を容易にして、成形後に適正な大径リングの軸方向寸法を確保することができる円錐ころ軸受用保持器の製造方法を提供することにある。   The present invention has been made in view of the above-described circumstances, and its purpose is to facilitate bending molding even with a large-diameter ring having a short axial dimension, and to ensure an appropriate axial dimension of the large-diameter ring after molding. Another object of the present invention is to provide a method for manufacturing a cage for a tapered roller bearing.

本発明の上記目的は、下記の構成により達成される。
（１） 小径リングと、該小径リングに対して軸方向に離間配置された大径リングと、該大径リングと前記小径リングとの間に円周方向に複数箇所配置されて、前記大径リングと前記小径リングとを連結する柱部と、を備えた円錐ころ軸受用保持器の製造方法であって、
板状素材に対して、円形状の中心孔と、該中心孔の外周部に円周方向に沿って複数箇所配置され、前記中心孔に連通した状態で径方向外方に次第に幅広となるように延びる扇状のポケット孔と、を形成する工程と、
前記板状素材の前記ポケット孔の外周側における前記大径リングの幅寸法を隔てた位置又は該位置近傍に円周方向に沿ってノッチを形成する工程と、
略円錐状の型面を有する金型によって、前記板状素材の前記ノッチの径方向内側部分を円錐台形状に曲げ変形させることにより、前記大径リング及び前記複数の柱部が一体となった円錐台形状の保持器基体を成形する工程と、
前記板状素材から前記保持器基体を分離する工程と、
前記分離した前記保持器基体の前記複数の柱部の先端に前記小径リングを固定する工程と、を備える
ことを特徴とする円錐ころ軸受用保持器の製造方法。 The above object of the present invention can be achieved by the following constitution.
(1) A small-diameter ring, a large-diameter ring spaced apart in the axial direction with respect to the small-diameter ring, and a plurality of circumferentially arranged between the large-diameter ring and the small-diameter ring, the large-diameter A method of manufacturing a retainer for a tapered roller bearing comprising a ring and a column portion connecting the small-diameter ring,
With respect to the plate-like material, a circular center hole and a plurality of peripheral holes are arranged along the circumferential direction on the outer periphery of the center hole, and gradually widen radially outward while communicating with the center hole. Forming a fan-shaped pocket hole extending to
Forming a notch along the circumferential direction at a position separated from or near the position of the width of the large-diameter ring on the outer peripheral side of the pocket hole of the plate-shaped material;
The large-diameter ring and the plurality of pillars are integrated by bending and deforming the radially inner portion of the notch of the plate-like material into a truncated cone shape by a mold having a substantially conical mold surface. Forming a truncated cone-shaped cage base;
Separating the retainer base from the plate material;
Fixing the small-diameter ring to the ends of the plurality of column portions of the separated retainer base. A method of manufacturing a retainer for a tapered roller bearing, comprising:

（２） 前記小径リングは、前記分離した前記保持器基体の複数の前記ポケット孔にそれぞれ前記円錐ころを挿入して、該円錐ころを内輪の軌道面に配置した状態で、前記複数の柱部の先端に固定される、
ことを特徴とする（１）に記載の円錐ころ軸受用保持器の製造方法。 (2) The small-diameter ring includes the plurality of column portions in a state where the tapered rollers are inserted into the plurality of pocket holes of the separated cage base body and the tapered rollers are arranged on the raceway surface of the inner ring. Fixed to the tip of the
The method for producing a cage for a tapered roller bearing according to (1), wherein:

（３） 小径リングと、該小径リングに対して軸方向に離間配置された大径リングと、該大径リングと前記小径リングとの間に円周方向に複数箇所配置されて、前記大径リングと前記小径リングとを連結する柱部と、を備えた円錐ころ軸受用保持器の製造方法であって、
板状素材に対して、円形状の中心孔と、該中心孔の外周側における前記小径リングの幅寸法を隔てた位置に円周方向に沿って複数箇所配置され、径方向外方に次第に幅広となるように延びる扇状のポケット孔と、を形成する工程と、
前記板状素材の前記ポケット孔の外周側における前記大径リングの幅寸法を隔てた位置又は該位置近傍に円周方向に沿ってノッチを形成する工程と、
略円錐状の型面を有する金型によって、前記板状素材の前記ノッチの径方向内側部分を円錐台形状に曲げ変形させることにより、前記大径リング、前記複数の柱部及び前記小径リングが一体となった円錐台形状の保持器を成形する工程と、
前記板状素材から前記保持器を分離する工程と、を備える
ことを特徴とする円錐ころ軸受用保持器の製造方法。 (3) A small-diameter ring, a large-diameter ring spaced apart in the axial direction with respect to the small-diameter ring, and a plurality of circumferentially disposed portions between the large-diameter ring and the small-diameter ring, A method of manufacturing a retainer for a tapered roller bearing comprising a ring and a column portion connecting the small-diameter ring,
With respect to the plate material, a plurality of circular center holes are arranged along the circumferential direction at positions separated from the width of the small-diameter ring on the outer peripheral side of the center hole, and gradually widen radially outward. Forming a fan-shaped pocket hole extending so as to become,
Forming a notch along the circumferential direction at a position separated from or near the position of the width of the large-diameter ring on the outer peripheral side of the pocket hole of the plate-shaped material;
By bending and deforming the radially inner portion of the notch of the plate-like material into a truncated cone shape by a mold having a substantially conical mold surface, the large-diameter ring, the plurality of column portions, and the small-diameter ring are Forming an integral truncated cone-shaped cage;
Separating the cage from the plate material. A method of manufacturing a tapered roller bearing cage.

本発明によれば、板状素材のポケット孔の外周側における大径リングの幅寸法を隔てた位置又は該位置近傍に円周方向に沿ってノッチを形成した後、略円錐状の型面を有する金型によって、板状素材の前記ノッチの径方向内側部分を円錐台形状に曲げ変形させる曲げ成形を行うので、大径リングの軸方向寸法が短い場合においても、該大径リングの曲げ成形が容易となり、成形後に適正な大径リングの軸方向寸法を確保することができる。   According to the present invention, a notch is formed along the circumferential direction at or near the position of the width of the large-diameter ring on the outer peripheral side of the pocket hole of the plate-shaped material, and then the substantially conical mold surface is formed. Bending molding is performed by bending and deforming the radially inner portion of the notch of the plate-like material into a truncated cone shape by the mold having the large-diameter ring even when the axial dimension of the large-diameter ring is short. Thus, it is possible to ensure an appropriate axial dimension of the large-diameter ring after molding.

以下、本発明に係る実施形態を図に従って説明する。図１は本発明の実施の形態の一例である円錐ころ軸受用保持器の製造方法によって製造された円錐ころ軸受用保持器が組み込まれた円錐ころ軸受の要部断面図、図２は本発明の実施の形態の一例である円錐ころ軸受用保持器の製造方法を説明するための工程図、図３は打ち抜き用ピアスの一例を示す平面図、図４はノッチの加工例を説明するための図、図５は大径リングの曲げ成形の様子を示す図である。   Embodiments according to the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of an essential part of a tapered roller bearing incorporating a tapered roller bearing retainer manufactured by a method for manufacturing a tapered roller bearing retainer according to an embodiment of the present invention. FIG. FIG. 3 is a plan view showing an example of a punching piercing, and FIG. 4 is a view for explaining a processing example of a notch. FIG. 5 and FIG. 5 are views showing a state of bending the large-diameter ring.

（第１実施形態）
まず、図１を参照して、本発明に係る実施形態の一例である円錐ころ軸受用保持器の製造方法によって製造された円錐ころ軸受用保持器が組み込まれた円錐ころ軸受について説明する。該円錐ころ軸受２０は、ハウジング（不図示）に外嵌され、内周面に円錐内面状に傾斜した外輪軌道面３５を有する外輪４と、回転軸（不図示）に内嵌され、外周面に円錐外面状に傾斜した内輪軌道面３４を有する内輪１と、外輪４の外輪軌道面３５と内輪１の内輪軌道面３４との間に複数配置された転動体である円錐台形の円錐ころ２と、該円錐ころ２を回転自在に保持する環状の保持器３と、を備える。 (First embodiment)
First, a tapered roller bearing incorporating a tapered roller bearing retainer manufactured by a method for manufacturing a tapered roller bearing retainer, which is an example of an embodiment according to the present invention, will be described with reference to FIG. The tapered roller bearing 20 is externally fitted to a housing (not shown), and has an outer ring 4 having an outer ring raceway surface 35 inclined in a conical inner surface on an inner circumferential surface, and a rotary shaft (not shown). The inner ring 1 having an inner ring raceway surface 34 inclined in the shape of a conical outer surface, and a frustoconical tapered roller 2 which is a plurality of rolling elements disposed between the outer ring raceway surface 35 of the outer ring 4 and the inner ring raceway surface 34 of the inner ring 1. And an annular cage 3 that rotatably holds the tapered roller 2.

内輪１には、内輪軌道面３４の大径側端部に大径側つば部２１ａが、小径側端部に小径つば部２１ｂがそれぞれ形成されている。該大径側つば部２１ａと該小径側つば部２１ｂとの間に円錐ころ２が配置されて、該円錐ころ２のアキシアル方向の移動が規制されている。   The inner ring 1 is formed with a large-diameter collar 21a at the large-diameter end of the inner-ring raceway surface 34 and a small-diameter collar 21b at the small-diameter end. The tapered roller 2 is disposed between the large-diameter side collar portion 21a and the small-diameter side collar portion 21b, and movement of the tapered roller 2 in the axial direction is restricted.

保持器３は、小径リング３１と、小径リング３１に対して軸方向に略同心に離間配置された大径リング３２と、大径リング３２と小径リング３１との間に円周方向に複数箇所配置されて、大径リング３２と小径リング３１とを連結する柱部３３と、を備えており、円周方向に互いに離間配置された各柱部３３との間には円錐ころ２を転動可能に保持するポケット孔８が形成されている。   The cage 3 includes a small-diameter ring 31, a large-diameter ring 32 that is spaced substantially concentrically in the axial direction with respect to the small-diameter ring 31, and a plurality of locations in the circumferential direction between the large-diameter ring 32 and the small-diameter ring 31. And a cylindrical portion 33 that connects the large-diameter ring 32 and the small-diameter ring 31 and rolls the tapered roller 2 between the column portions 33 that are spaced apart from each other in the circumferential direction. A pocket hole 8 is formed to hold it.

また、本実施形態では、大径リング３２及び複数の柱部３３によって構成される保持器基体３ａ（図２の分離工程参照）と、小径リング３１と、を別々に形成している。そして、保持器基体３ａの複数のポケット孔８にそれぞれ円錐ころ２を挿入して、該円錐ころ２を内輪１の内輪軌道面３４に配置した状態で、保持器基体３ａの複数の柱部３３の先端に小径リング３１を嵌合し、この嵌合部を例えばＹＡＧレーザにより溶接等を施して固定している。また、この場合、小径リング３１に複数の柱部３３が位置決め嵌合される複数の凹部を設けるのが好ましい。
なお、小径リング３１は、例えば、円周方向の一部が切断されて、径方向に拡径可能とされており、内輪１の小径側つば部２１ｂを乗り越えた後に、該切断部分が溶接等により接続されてもよい。 In the present embodiment, the cage base 3a (see the separation step in FIG. 2) constituted by the large-diameter ring 32 and the plurality of pillars 33 and the small-diameter ring 31 are formed separately. Then, the tapered rollers 2 are respectively inserted into the plurality of pocket holes 8 of the cage base 3 a and the tapered rollers 2 are arranged on the inner ring raceway surface 34 of the inner ring 1. A small-diameter ring 31 is fitted to the tip of the ring, and the fitting portion is fixed by welding, for example, with a YAG laser. In this case, it is preferable to provide a plurality of recesses in which the plurality of column portions 33 are positioned and fitted to the small diameter ring 31.
The small-diameter ring 31 is, for example, partially cut in the circumferential direction so that the diameter can be increased in the radial direction, and after the small-diameter side collar portion 21b of the inner ring 1 is overcome, the cut portion is welded or the like. May be connected.

次に、図２〜図５を参照して、本実施形態の円錐ころ軸受用保持器の製造方法について説明する。
本実施形態の円錐ころ軸受用保持器の製造方法は、図２に示すように、打抜き工程、面押し工程、ノッチ加工工程、曲げ工程、分離工程、及び小径リング固定工程（不図示）を備えている。 Next, with reference to FIGS. 2-5, the manufacturing method of the retainer for tapered roller bearings of this embodiment is demonstrated.
As shown in FIG. 2, the manufacturing method of the tapered roller bearing cage of the present embodiment includes a punching process, a surface pressing process, a notching process, a bending process, a separating process, and a small diameter ring fixing process (not shown). ing.

まず、打抜き工程では、金属板（合金鋼等）等の板状素材７に対して、円形状の中心孔９と、該中心孔９の外周部に円周方向に沿って複数箇所配置され、中心孔９に連通した状態で径方向外方に次第に幅広となるように延びる扇状のポケット孔８と、を図３に示す打抜き用ピアス３０を用いた打ち抜き加工により形成する。これにより、円周方向に互いに隣り合う各ポケット孔８の間には、柱部３３が形成される。   First, in the punching step, a plate-shaped material 7 such as a metal plate (alloy steel or the like) is arranged at a plurality of locations along the circumferential direction in a circular center hole 9 and an outer peripheral portion of the center hole 9, A fan-shaped pocket hole 8 extending so as to be gradually widened radially outward in a state of communicating with the central hole 9 is formed by punching using a punching pierce 30 shown in FIG. Thereby, the pillar part 33 is formed between the pocket holes 8 adjacent to each other in the circumferential direction.

打抜きピアス３０は、図３に示すように、中心孔打抜き部９ａと、該中心孔打抜き部９ａの外周部に一体に設けられた一対のポケット孔打抜き部８ａと、を備えており、中心孔打抜き部９ａを中心軸として予め定められた角度で回動されながら板状素材７に対して打抜き加工を続けることで、板状素材７に中心孔９及びポケット孔８が形成される。なお、本実施形態では、板状素材７に中心孔９及びポケット孔８を一度の打抜き加工で形成する場合を例示したが、板状素材７に中心孔９及びポケット孔８を別々に打ち抜いて形成するようにしてもよい。   As shown in FIG. 3, the punching pierce 30 includes a center hole punching portion 9a and a pair of pocket hole punching portions 8a provided integrally on the outer periphery of the center hole punching portion 9a. The center hole 9 and the pocket hole 8 are formed in the plate-like material 7 by continuing the punching process with respect to the plate-like material 7 while being rotated at a predetermined angle with the punched portion 9a as the central axis. In the present embodiment, the case where the center hole 9 and the pocket hole 8 are formed in the plate-like material 7 by a single punching process is illustrated, but the center hole 9 and the pocket hole 8 are separately punched in the plate-like material 7. You may make it form.

次に実施される面押し工程では、打抜き工程で形成された柱部３３の円周方向の両側部にテーパ形状の型押し治具（図示せず）を押し付けることで、柱部３３に円錐ころ２の案内面となる当接面６を形成する。   In the next surface pressing step, a tapered die pressing jig (not shown) is pressed against both sides in the circumferential direction of the column portion 33 formed in the punching step, so that the tapered roller is pressed against the column portion 33. A contact surface 6 serving as a second guide surface is formed.

さらに、ノッチ加工工程は、図４に示すように、先端淵部に楔形状の突起部１０を有するパンチ１１を用いて、板状素材７のポケット孔８の外周側における大径リング３２の幅寸法を隔てた位置、即ち大径リング３２の外周部（円錐台形状の保持器基体３ａにおける大径リング３２の軸方向端部）の予定位置Ｓ１に円周方向に沿ってノッチ１２を加工して、大径リング３２の曲げの基点を形成する。   Further, in the notch processing step, as shown in FIG. 4, the width of the large-diameter ring 32 on the outer peripheral side of the pocket hole 8 of the plate-like material 7 using the punch 11 having the wedge-shaped protrusion 10 at the front end collar portion. The notch 12 is processed along the circumferential direction at a predetermined position S1 at a position apart from the dimension, that is, at the outer peripheral portion of the large-diameter ring 32 (the axial end portion of the large-diameter ring 32 in the truncated cone-shaped cage base 3a). Thus, the bending base point of the large-diameter ring 32 is formed.

そして、曲げ工程は、略円錐状の雌型面を有するダイス１４（図５参照）にノッチ加工工程を経た板状素材７をセットし、板状素材７のノッチ１２の径方向内側部分に略円錐状の雄型面を有するパンチ１３をノッチ１２側から挿入することにより、図５に示すように、前記径方向内側部分を円錐台形状に曲げ変形させて複数の柱部３３を押し広げ、これにより、大径リング３２及び複数の柱部３３が一体となった円錐台形状の保持器基体３ａを曲げ成形する。   In the bending step, the plate-like material 7 that has undergone the notch processing step is set on a die 14 (see FIG. 5) having a substantially conical female surface, and the plate-like material 7 is substantially disposed on the radially inner portion of the notch 12. By inserting a punch 13 having a conical male surface from the notch 12 side, as shown in FIG. 5, the radially inner portion is bent and deformed into a truncated cone shape, and the plurality of column portions 33 are expanded. Thereby, the truncated cone-shaped cage base 3a in which the large-diameter ring 32 and the plurality of pillars 33 are integrated is bent.

前記曲げ成形においては、板状素材７のノッチ１２の径方向内側部分は、ノッチ１２位置、即ち大径リング３２の外周部（円錐台形状の保持器基体３ａにおける大径リング３２の軸方向端部）の予定位置Ｓ１を基点として曲がるため、大径リング３２の軸方向寸法が短い場合においても、該大径リング３２の曲げ成形を容易に行うことができる。   In the bending, the radially inner portion of the notch 12 of the plate-like material 7 is located at the notch 12 position, that is, the outer periphery of the large-diameter ring 32 (the axial end of the large-diameter ring 32 in the truncated cone-shaped cage base 3a). Therefore, even when the large-diameter ring 32 has a short axial dimension, the large-diameter ring 32 can be bent easily.

分離工程は、保持器基体３ａに対して円環形状のパンチ（不図示）を打ち込むか、或いはノッチ１２部分にレーザービームを照射する等して、板状素材７から保持器基体３ａを分離する。   In the separation step, the cage base 3a is separated from the plate material 7 by driving an annular punch (not shown) into the cage base 3a or irradiating the notch 12 with a laser beam. .

小径リング固定工程は、分離工程で板状素材７から分離された保持器基体３ａの複数のポケット孔８にそれぞれ円錐ころ２を挿入して、該円錐ころ２を内輪１の内輪軌道面３４に配置し、この状態で、保持器基体３ａの複数の柱部３３の先端に小径リング３１を嵌合させ、この嵌合部を例えばＹＡＧレーザにより溶接等を施して固定している。
なお、前記小径リング３１を前記保持器基体３ａに位置ずれすることなく確実に固定するため、柱部３３の先端に取付座を設けてもよい。 In the small diameter ring fixing step, the tapered rollers 2 are respectively inserted into the plurality of pocket holes 8 of the cage base 3a separated from the plate-like material 7 in the separating step, and the tapered rollers 2 are inserted into the inner ring raceway surface 34 of the inner ring 1. In this state, the small-diameter ring 31 is fitted to the tips of the plurality of column portions 33 of the cage base 3a, and the fitting portion is fixed by welding, for example, with a YAG laser.
In order to securely fix the small-diameter ring 31 to the cage base 3a without being displaced, a mounting seat may be provided at the tip of the column portion 33.

上述したように、本実施形態では、板状素材７のポケット孔８の外周側における大径リング３２の幅寸法を隔てた位置に円周方向に沿ってノッチ１２を形成した後、略円錐状の型面を有する金型１３，１４によって、板状素材７のノッチ１２の径方向内側部分を円錐台形状に曲げ変形させる曲げ成形を行うので、板状素材７のノッチ１２の径方向内側部分を、ノッチ１２位置、即ち、大径リング３２の外周部（円錐台形状の保持器基体３ａにおける大径リング３２の軸方向端部）の予定位置Ｓ１を基点として曲げることができる。これにより、大径リング３２の軸方向寸法が短い場合においても、該大径リング３２の曲げ成形が容易となり、成形後に適正な大径リング３２の軸方向寸法を確保することができる。   As described above, in the present embodiment, the notch 12 is formed along the circumferential direction at a position apart from the width of the large-diameter ring 32 on the outer peripheral side of the pocket hole 8 of the plate-like material 7, and then substantially conical. Since the molds 13 and 14 having the mold surfaces are bent to deform the radially inner portion of the notch 12 of the plate-like material 7 into a truncated cone shape, the radially inner portion of the notch 12 of the plate-like material 7 Can be bent with reference to the notch 12 position, that is, the planned position S1 of the outer peripheral portion of the large-diameter ring 32 (the axial end portion of the large-diameter ring 32 in the truncated cone-shaped cage base 3a). Thereby, even when the axial dimension of the large-diameter ring 32 is short, the large-diameter ring 32 can be easily formed by bending, and an appropriate axial dimension of the large-diameter ring 32 can be secured after molding.

また、大径リング３２及び複数の柱部３３によって構成される保持器基体３ａと、小径リング３１と、を別々に形成し、保持器基体３ａの複数のポケット孔８にそれぞれ円錐ころ２を挿入して、該円錐ころ２を内輪１の内輪軌道面３４に配置した状態で、保持器基体３ａの複数の柱部３３の先端に小径リング３１を固定している。これにより、従来のように、保持器の小径リングを内輪１の小径側つば部２１ｂの径より拡径させて円錐ころ軸受に組み込んだ後に小径リングを加締め加工する必要がなくなるので、保持器の寸法精度が向上する。   Further, the cage base 3a constituted by the large-diameter ring 32 and the plurality of pillars 33 and the small-diameter ring 31 are separately formed, and the tapered rollers 2 are inserted into the plurality of pocket holes 8 of the cage base 3a, respectively. Then, in a state where the tapered roller 2 is disposed on the inner ring raceway surface 34 of the inner ring 1, the small diameter ring 31 is fixed to the tips of the plurality of column portions 33 of the cage base 3a. This eliminates the need for crimping the small-diameter ring after the small-diameter ring of the cage is expanded from the diameter of the small-diameter side collar portion 21b of the inner ring 1 and incorporated into the tapered roller bearing, as in the prior art. Dimensional accuracy is improved.

（第２実施形態）
次に、図６及び図７に従って、本発明に係る第２実施形態である円錐ころ軸受用保持器の製造方法について説明する。なお、第１実施形態と重複する部分については各図に同一符号を付して説明する。 (Second Embodiment)
Next, according to FIG.6 and FIG.7, the manufacturing method of the retainer for tapered roller bearings which is 2nd Embodiment which concerns on this invention is demonstrated. In addition, about the part which overlaps with 1st Embodiment, the same code | symbol is attached | subjected and demonstrated to each figure.

第２実施形態である円錐ころ軸受用保持器の製造方法は、図６に示すように、打抜き工程、面押し工程、ノッチ加工工程、曲げ工程、及び分離工程を備えている。   As shown in FIG. 6, the manufacturing method of the tapered roller bearing retainer according to the second embodiment includes a punching process, a surface pressing process, a notching process, a bending process, and a separating process.

打抜き工程は、金属板（合金鋼等）等の板状素材７に対して、円形状の中心孔９と、該中心孔９の外周側における小径リング３１の幅寸法を隔てた位置に円周方向に沿って複数箇所配置され、径方向外方に次第に幅広となるように延びる扇状のポケット孔８と、を図７に示す打抜き用ピアス４０を用いた打ち抜き加工により形成する。これにより、円周方向に互いに隣り合う各ポケット孔８の間には、柱部３３が形成される。   In the punching process, a circular center hole 9 and a width of the small-diameter ring 31 on the outer peripheral side of the center hole 9 are separated from the plate-like material 7 such as a metal plate (alloy steel, etc.). A plurality of fan-shaped pocket holes 8 that are arranged at a plurality of locations in the direction and extend gradually outward in the radial direction are formed by punching using punching piercings 40 shown in FIG. Thereby, the pillar part 33 is formed between the pocket holes 8 adjacent to each other in the circumferential direction.

打抜きピアス４０は、図７に示すように、中心孔打抜き部９ａと、該中心孔打抜き部９ａの外周部に一体に設けられた一対のポケット孔打抜き部８ａと、を備えており、中心孔打抜き部９ａを中心軸として予め定められた角度で回動されながら板状素材７に対して打抜き加工を続けることで、板状素材７に中心孔９及びポケット孔８が形成される。なお、本実施形態では、板状素材７に中心孔９及びポケット孔８を一度の打抜き加工で形成する場合を例示したが、板状素材７に中心孔９及びポケット孔８を別々に打ち抜いて形成するようにしてもよい。   As shown in FIG. 7, the punching pierce 40 includes a center hole punching portion 9a and a pair of pocket hole punching portions 8a integrally provided on the outer peripheral portion of the center hole punching portion 9a. The center hole 9 and the pocket hole 8 are formed in the plate-like material 7 by continuing the punching process with respect to the plate-like material 7 while being rotated at a predetermined angle with the punched portion 9a as the central axis. In the present embodiment, the case where the center hole 9 and the pocket hole 8 are formed in the plate-like material 7 by a single punching process is illustrated, but the center hole 9 and the pocket hole 8 are separately punched in the plate-like material 7. You may make it form.

次に実施される面押し工程は、打抜き工程で形成された柱部３３の円周方向の両側部にテーパ形状の型押し治具（図示せず）を押し付けることで、柱部３３に円錐ころ２の案内面となる当接面６を形成する。   Next, the surface pressing step is performed by pressing a tapered die pressing jig (not shown) on both sides in the circumferential direction of the column portion 33 formed in the punching step, so that the tapered portion is pressed against the column portion 33. A contact surface 6 serving as a second guide surface is formed.

さらに、ノッチ加工工程は、先端淵部に楔形状の突起部１０を有するパンチ１１を用いて、板状素材７のポケット孔８の外周側における大径リング３２の幅寸法を隔てた位置、即ち大径リング３２の外周部（円錐台形状の保持器成形体３ｂにおける大径リング３２の軸方向端部）の予定位置Ｓ１に円周方向に沿ってノッチ１２を加工して、大径リング３２の曲げの基点を形成する（図４参照）。   Further, the notch processing step uses the punch 11 having the wedge-shaped protrusion 10 at the front end hook portion, and positions separated from the width of the large-diameter ring 32 on the outer peripheral side of the pocket hole 8 of the plate-like material 7, that is, The notch 12 is processed along the circumferential direction at a predetermined position S1 of the outer peripheral portion of the large-diameter ring 32 (the axial end of the large-diameter ring 32 in the truncated cone-shaped cage molded body 3b). The base point of bending is formed (see FIG. 4).

そして、曲げ工程は、略円錐状の雌型面を有するダイス１４（図５参照）にノッチ加工工程を経た板状素材７をセットし、板状素材７のノッチ１２の径方向内側部分に略円錐状の雄型面を有するパンチ１３をノッチ１２側から挿入することにより、前記径方向内側部分を円錐台形状に曲げ変形させて複数の柱部３３を押し広げ、これにより、小径リング３１、大径リング３２及び複数の柱部３３が一体となった円錐台形状の保持器３を曲げ成形する。   In the bending step, the plate-like material 7 that has undergone the notch processing step is set on a die 14 (see FIG. 5) having a substantially conical female surface, and the plate-like material 7 is substantially disposed on the radially inner portion of the notch 12. By inserting a punch 13 having a conical male surface from the side of the notch 12, the radially inner portion is bent and deformed into a truncated cone shape to expand the plurality of column portions 33, thereby forming a small diameter ring 31. The frustoconical cage 3 in which the large-diameter ring 32 and the plurality of pillars 33 are integrated is formed by bending.

前記曲げ成形においては、板状素材７のノッチ１２の径方向内側部分は、ノッチ１２位置、即ち大径リング３２の外周部（円錐台形状の保持器成形体３ｂにおける大径リング３２の軸方向端部）の予定位置Ｓ１を基点として曲がるため、大径リング３２の軸方向寸法が短い場合においても、該大径リング３２の曲げ成形を容易に行うことができる。   In the bending, the radially inner portion of the notch 12 of the plate material 7 is located at the position of the notch 12, that is, the outer periphery of the large diameter ring 32 (the axial direction of the large diameter ring 32 in the truncated cone shaped cage molded body 3b). Therefore, even if the large-diameter ring 32 has a short axial dimension, the large-diameter ring 32 can be easily bent.

分離工程は、前記保持器３に対して円環形状のパンチ（不図示）を打ち込むか、或いはノッチ１２部分にレーザービームを照射する等して、板状素材７から保持器３を分離する。   In the separation step, the retainer 3 is separated from the plate material 7 by driving an annular punch (not shown) into the retainer 3 or irradiating the notch 12 with a laser beam.

上述したように、本実施形態では、板状素材７のポケット孔８の外周側における大径リング３２の幅寸法を隔てた位置に円周方向に沿ってノッチ１２を形成した後、略円錐状の型面を有する金型１３，１４によって、板状素材７のノッチ１２の径方向内側部分を円錐台形状に曲げ変形させる曲げ成形を行うので、板状素材７のノッチ１２の径方向内側部分を、ノッチ１２位置、即ち、大径リング３２の外周部（円錐台形状の保持器成形体３ｂにおける大径リング３２の軸方向端部）の予定位置Ｓ１を基点として曲げることができる。これにより、大径リング３２の軸方向寸法が短い場合においても、該大径リング３２の曲げ成形が容易となり、成形後に適正な大径リング３２の軸方向寸法を確保することができる。   As described above, in the present embodiment, the notch 12 is formed along the circumferential direction at a position apart from the width of the large-diameter ring 32 on the outer peripheral side of the pocket hole 8 of the plate-like material 7, and then substantially conical. Since the molds 13 and 14 having the mold surfaces are bent to deform the radially inner portion of the notch 12 of the plate-like material 7 into a truncated cone shape, the radially inner portion of the notch 12 of the plate-like material 7 Can be bent with reference to the notch 12 position, that is, the predetermined position S1 of the outer peripheral portion of the large-diameter ring 32 (the axial end of the large-diameter ring 32 in the truncated cone-shaped cage molded body 3b). Thereby, even when the axial dimension of the large-diameter ring 32 is short, the large-diameter ring 32 can be easily formed by bending, and an appropriate axial dimension of the large-diameter ring 32 can be secured after molding.

以上で具体的実施形態の説明を終えるが、本発明の様態はこれら実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲において適宜、変形、改良などが可能である。例えば、上記実施形態では、面押し工程を打抜き工程とノッチ加工工程との間に行ったが、面押し工程をノッチ加工工程と曲げ工程との間、或いは曲げ工程と分離工程との間に行うようにしてもよい。   The description of the specific embodiments is finished above, but the aspect of the present invention is not limited to these embodiments, and modifications, improvements, and the like can be appropriately made without departing from the gist of the present invention. For example, in the above embodiment, the surface pressing process is performed between the punching process and the notching process, but the surface pressing process is performed between the notching process and the bending process or between the bending process and the separation process. You may do it.

また、上記実施形態における各工程では上下方向（重力方向）で処理が施されるが、例えば曲げ工程ではノッチ側から金型を挿入して複数の柱部を押し広げることができればよく、その処理方向について制限はない。   Further, in each process in the above embodiment, the process is performed in the vertical direction (gravity direction). For example, in the bending process, it is only necessary to insert a mold from the notch side to spread a plurality of pillars. There are no restrictions on the direction.

本発明の実施の形態の一例である円錐ころ軸受用保持器の製造方法によって製造された円錐ころ軸受用保持器を組み込んだ円錐ころ軸受の要部断面図である。It is principal part sectional drawing of the tapered roller bearing incorporating the tapered roller bearing retainer manufactured by the manufacturing method of the tapered roller bearing retainer which is an example of embodiment of this invention. 本発明の実施の形態の一例である円錐ころ軸受用保持器の製造方法を説明するための工程図である。It is process drawing for demonstrating the manufacturing method of the retainer for tapered roller bearings which is an example of embodiment of this invention. 打ち抜き用ピアスの一例を示す平面図である。It is a top view which shows an example of the piercing for punching. ノッチの加工例を説明するための図である。It is a figure for demonstrating the example of a process of a notch. 大径リングの曲げ成形の様子を示す図であり、（ａ）は成形途中の状態、（ｂ）は成形完了時の状態である。It is a figure which shows the mode of bending shaping | molding of a large diameter ring, (a) is the state in the middle of shaping | molding, (b) is the state at the time of shaping | molding completion. 本発明の他の実施の形態である円錐ころ軸受用保持器の製造方法を説明するための工程図である。It is process drawing for demonstrating the manufacturing method of the retainer for tapered roller bearings which is other embodiment of this invention. 打ち抜き用ピアスの一例を示す平面図である。It is a top view which shows an example of the piercing for punching. 従来の大径リングの曲げ成形の様子を示す図であり、（ａ）は成形途中の状態、（ｂ）は成形完了時の状態である。It is a figure which shows the mode of the bending process of the conventional large diameter ring, (a) is the state in the middle of shaping | molding, (b) is the state at the time of completion of shaping | molding.

符号の説明Explanation of symbols

１ 内輪
２ 円錐ころ
３ 円錐ころ軸受用保持器
３ａ 保持器基体
３ｂ 保持器成形体
４ 外輪
７ 板状素材
８ ポケット孔
９ 中心孔
１０ 突起部
１２ ノッチ
１３ パンチ（金型）
１４ ダイス（金型）
２０ 円錐ころ軸受
３１ 小径リング
３２ 大径リング
３３ 柱部
３４ 内輪軌道面
３５ 外輪軌道面 DESCRIPTION OF SYMBOLS 1 Inner ring 2 Tapered roller 3 Cage roller bearing cage 3a Cage base 3b Cage molded body 4 Outer ring 7 Plate material 8 Pocket hole 9 Center hole 10 Protrusion 12 Notch 13 Punch (die)
14 Die (mold)
20 Tapered roller bearing 31 Small diameter ring 32 Large diameter ring 33 Column 34 Inner ring raceway surface 35 Outer ring raceway surface

Claims (3)

小径リングと、該小径リングに対して軸方向に離間配置された大径リングと、該大径リングと前記小径リングとの間に円周方向に複数箇所配置されて、前記大径リングと前記小径リングとを連結する柱部と、を備えた円錐ころ軸受用保持器の製造方法であって、
板状素材に対して、円形状の中心孔と、該中心孔の外周部に円周方向に沿って複数箇所配置され、前記中心孔に連通した状態で径方向外方に次第に幅広となるように延びる扇状のポケット孔と、を形成する工程と、
前記板状素材の前記ポケット孔の外周側における前記大径リングの幅寸法を隔てた位置又は該位置近傍に円周方向に沿ってノッチを形成する工程と、
略円錐状の型面を有する金型によって、前記板状素材の前記ノッチの径方向内側部分を円錐台形状に曲げ変形させることにより、前記大径リング及び前記複数の柱部が一体となった円錐台形状の保持器基体を成形する工程と、
前記板状素材から前記保持器基体を分離する工程と、
前記分離した前記保持器基体の前記複数の柱部の先端に前記小径リングを固定する工程と、を備える
ことを特徴とする円錐ころ軸受用保持器の製造方法。 A small-diameter ring, a large-diameter ring spaced apart in the axial direction with respect to the small-diameter ring, and a plurality of circumferentially disposed between the large-diameter ring and the small-diameter ring, the large-diameter ring and the A method of manufacturing a retainer for a tapered roller bearing provided with a column portion that connects a small-diameter ring,
With respect to the plate-like material, a circular center hole and a plurality of peripheral holes are arranged along the circumferential direction on the outer periphery of the center hole, and gradually widen radially outward while communicating with the center hole. Forming a fan-shaped pocket hole extending to
Forming a notch along the circumferential direction at a position separated from or near the position of the width of the large-diameter ring on the outer peripheral side of the pocket hole of the plate-shaped material;
The large-diameter ring and the plurality of pillars are integrated by bending and deforming the radially inner portion of the notch of the plate-like material into a truncated cone shape by a mold having a substantially conical mold surface. Forming a truncated cone-shaped cage base;
Separating the retainer base from the plate material;
Fixing the small-diameter ring to the ends of the plurality of column portions of the separated retainer base. A method of manufacturing a retainer for a tapered roller bearing, comprising: 前記小径リングは、前記分離した前記保持器基体の複数の前記ポケット孔にそれぞれ前記円錐ころを挿入して、該円錐ころを内輪の軌道面に配置した状態で、前記複数の柱部の先端に固定される、
ことを特徴とする請求項１に記載の円錐ころ軸受用保持器の製造方法。 The small-diameter ring is inserted into the plurality of pocket holes of the separated retainer base, and the tapered rollers are arranged on the raceway surface of the inner ring, with the tapered rollers being disposed at the ends of the plurality of column portions. Fixed,
The manufacturing method of the retainer for tapered roller bearings of Claim 1 characterized by the above-mentioned. 小径リングと、該小径リングに対して軸方向に離間配置された大径リングと、該大径リングと前記小径リングとの間に円周方向に複数箇所配置されて、前記大径リングと前記小径リングとを連結する柱部と、を備えた円錐ころ軸受用保持器の製造方法であって、
板状素材に対して、円形状の中心孔と、該中心孔の外周側における前記小径リングの幅寸法を隔てた位置に円周方向に沿って複数箇所配置され、径方向外方に次第に幅広となるように延びる扇状のポケット孔と、を形成する工程と、
前記板状素材の前記ポケット孔の外周側における前記大径リングの幅寸法を隔てた位置又は該位置近傍に円周方向に沿ってノッチを形成する工程と、
略円錐状の型面を有する金型によって、前記板状素材の前記ノッチの径方向内側部分を円錐台形状に曲げ変形させることにより、前記大径リング、前記複数の柱部及び前記小径リングが一体となった円錐台形状の保持器を成形する工程と、
前記板状素材から前記保持器を分離する工程と、を備える
ことを特徴とする円錐ころ軸受用保持器の製造方法。 A small-diameter ring, a large-diameter ring spaced apart in the axial direction with respect to the small-diameter ring, and a plurality of circumferentially disposed between the large-diameter ring and the small-diameter ring, the large-diameter ring and the A method of manufacturing a retainer for a tapered roller bearing provided with a column portion that connects a small-diameter ring,
With respect to the plate material, a plurality of circular center holes are arranged along the circumferential direction at positions separated from the width of the small-diameter ring on the outer peripheral side of the center hole, and gradually widen radially outward. Forming a fan-shaped pocket hole extending so as to become,
Forming a notch along the circumferential direction at a position separated from or near the position of the width of the large-diameter ring on the outer peripheral side of the pocket hole of the plate-shaped material;
By bending and deforming the radially inner portion of the notch of the plate-like material into a truncated cone shape by a mold having a substantially conical mold surface, the large-diameter ring, the plurality of column portions, and the small-diameter ring are Forming an integral truncated cone-shaped cage;
Separating the cage from the plate material. A method of manufacturing a tapered roller bearing cage.
JP2006131838A 2006-05-10 2006-05-10 Manufacturing method of retainer for conical roller bearing Pending JP2007303536A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013094615A1 (en) * 2011-12-21 2013-06-27 中西金属工業株式会社 Roller bearing cage and manufacturing method thereof
KR101921643B1 (en) 2016-06-24 2018-11-26 (주)엠에스텍 Manufacturing method for retainer of tapered roller bearing

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Publication number Priority date Publication date Assignee Title
JPS5454757U (en) * 1977-09-24 1979-04-16
JPH0669394A (en) * 1992-08-19 1994-03-11 Apic Yamada Kk Cutting method for thin-plate material and cut-working method for lead, cut-working apparatus and lead frame
JPH09217749A (en) * 1996-02-14 1997-08-19 Shakushun So Manufacture of retainer for tapered roller bearing
JP2002021878A (en) * 2000-07-04 2002-01-23 Fuji Univance Corp Method of manufacturing retainer for one-way clutch
JP2005090740A (en) * 2003-08-08 2005-04-07 Nsk Ltd Method of manufacturing retainer for roller bearing, and retainer for roller bearing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5454757U (en) * 1977-09-24 1979-04-16
JPH0669394A (en) * 1992-08-19 1994-03-11 Apic Yamada Kk Cutting method for thin-plate material and cut-working method for lead, cut-working apparatus and lead frame
JPH09217749A (en) * 1996-02-14 1997-08-19 Shakushun So Manufacture of retainer for tapered roller bearing
JP2002021878A (en) * 2000-07-04 2002-01-23 Fuji Univance Corp Method of manufacturing retainer for one-way clutch
JP2005090740A (en) * 2003-08-08 2005-04-07 Nsk Ltd Method of manufacturing retainer for roller bearing, and retainer for roller bearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013094615A1 (en) * 2011-12-21 2013-06-27 中西金属工業株式会社 Roller bearing cage and manufacturing method thereof
KR101921643B1 (en) 2016-06-24 2018-11-26 (주)엠에스텍 Manufacturing method for retainer of tapered roller bearing

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