JP2001165170A - Method of manufacturing rolling bearing cage - Google Patents

Method of manufacturing rolling bearing cage

Info

Publication number
JP2001165170A
JP2001165170A JP34452599A JP34452599A JP2001165170A JP 2001165170 A JP2001165170 A JP 2001165170A JP 34452599 A JP34452599 A JP 34452599A JP 34452599 A JP34452599 A JP 34452599A JP 2001165170 A JP2001165170 A JP 2001165170A
Authority
JP
Japan
Prior art keywords
thickness
rolling bearing
cage
plate
manufacturing
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.)
Pending
Application number
JP34452599A
Other languages
Japanese (ja)
Other versions
JP2001165170A5 (en
Inventor
Akiyoshi Yamaguchi
昭義 山口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to JP34452599A priority Critical patent/JP2001165170A/en
Publication of JP2001165170A publication Critical patent/JP2001165170A/en
Publication of JP2001165170A5 publication Critical patent/JP2001165170A5/ja
Pending legal-status Critical Current

Links

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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14Spinning
    • B21D22/16Spinning over shaping mandrels or formers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/10Making other particular articles parts of bearings; sleeves; valve seats or the like
    • B21D53/12Making other particular articles parts of bearings; sleeves; valve seats or the like cages for bearings
    • 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
    • F16C19/34Bearings 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

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing a rolling bearing cage with a specified wall thickness from a steel plate with a thicker plate thickness than the specified wall thickness. SOLUTION: A punched plate 21 of 2.9 mm in plate thickness discharged in a process of manufacturing a large-sized tapered roller bearing cage 10 is used as a blank, and the plate thickness is thinned by an ironing-spinning method to manufacture a tapered roller bearing cage 20 of 2.0 mm in wall thickness smaller than the tapered roller bearing cage 10. In this case, a wall thickness decrease rate ηis 31.0%.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、転がり軸受用保持
器の製造方法に係り、特に、冷間塑性加工法による転が
り軸受用保持器の製造方法に関する。
The present invention relates to a method for manufacturing a cage for a rolling bearing, and more particularly to a method for manufacturing a cage for a rolling bearing by cold plastic working.

【0002】[0002]

【従来の技術】従来、転がり軸受用保持器は、鋼板を円
形に打ち抜いたブランクから、絞りプレス加工や絞りス
ピニング加工等の絞り加工により製造されることが多か
った。例えば、円すいころ軸受用のかご形保持器の場合
は、以下のような各工程を経て鋼板から製造されてい
た。 (1)鋼板から円板(ブランク)を打ち抜く板取り工
程。 (2)前記円板に上記のような絞り加工を施して、前記
円板の外周部を曲げてカップ状(円すい台状)に成形す
る絞り工程。 (3)カップ状の成形物の筒状部の開口端を切削バイト
により切削して滑らかにする切削工程。 (4)カップ状の成形物の底板部を打ち抜いて円形の穴
を開ける打抜き工程。 (5)カップ状の成形物の筒状部に、円周方向に沿って
複数の矩形の穴(ポケット)を設けるポケット形成工
程。 (6)保持器の柱を仕上げる柱形成工程。
2. Description of the Related Art Roller bearing retainers have heretofore often been manufactured from a blank formed by punching a steel plate into a circular shape by drawing such as drawing pressing or drawing spinning. For example, a cage cage for a tapered roller bearing has been manufactured from a steel plate through the following steps. (1) A plate removing process for punching a disk (blank) from a steel plate. (2) A drawing process in which the disk is subjected to drawing as described above, and an outer peripheral portion of the disk is bent to form a cup shape (conical frustum shape). (3) A cutting step in which the opening end of the cylindrical portion of the cup-shaped molded product is cut with a cutting bite to make it smooth. (4) A punching step of punching a circular hole by punching a bottom plate portion of a cup-shaped molded product. (5) A pocket forming step of providing a plurality of rectangular holes (pockets) along the circumferential direction in the cylindrical portion of the cup-shaped molded product. (6) A pillar forming step for finishing the pillars of the cage.

【0003】転がり軸受用保持器の肉厚は、使用される
転がり軸受のサイズ、すなわち、転がり軸受用保持器の
サイズと概ね比例関係にあり、転がり軸受用保持器のサ
イズに応じてほぼ一義的に定まるようになっている。し
たがって、上記のように転がり軸受用保持器を製造する
際には、転がり軸受用保持器のサイズに応じて、製造す
る転がり軸受用保持器の肉厚にほぼ等しい板厚の鋼板を
選択し、その鋼板からブランクを打ち抜いていた。
[0003] The thickness of the rolling bearing cage is substantially proportional to the size of the rolling bearing used, that is, the size of the rolling bearing cage, and is almost univocally determined according to the size of the rolling bearing cage. It is decided to be. Therefore, when manufacturing the rolling bearing cage as described above, according to the size of the rolling bearing cage, to select a steel plate having a thickness substantially equal to the thickness of the rolling bearing cage to be manufactured, A blank was punched from the steel plate.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記の
ような転がり軸受用保持器の肉厚に合わせて使用する鋼
板を選択する方法では、異なるサイズの転がり軸受用保
持器においてはその肉厚も異なるので、種々のサイズの
転がり軸受用保持器を製造する必要がある場合には、そ
のサイズに応じて複数の板厚の鋼板を用意する必要があ
る。
However, in the above-described method of selecting a steel plate to be used according to the thickness of the rolling bearing cage, the rolling bearing cages of different sizes have different thicknesses. Therefore, when it is necessary to manufacture rolling bearing retainers of various sizes, it is necessary to prepare steel plates having a plurality of thicknesses according to the sizes.

【0005】また、事前に鋼板を圧延して、製造する転
がり軸受用保持器の肉厚に合うような板厚の鋼板を製造
し、その鋼板を使用して転がり軸受用保持器を製造すれ
ば、厚い板厚の鋼板から薄い板厚の鋼板を製造すること
ができるので、用意する鋼板の種類を少なくすることが
できる。しかし、その場合は、鋼板の圧延工程が必要に
なるので、転がり軸受用保持器の製造コストが上昇す
る、製造に要する時間が長くなる等の問題点がある。
In addition, if a steel plate having a thickness matching the thickness of the rolling bearing cage to be manufactured is manufactured by rolling the steel plate in advance, and the rolling bearing cage is manufactured using the steel plate. Since a steel plate having a small thickness can be manufactured from a steel plate having a large thickness, the types of steel plates to be prepared can be reduced. However, in this case, since a rolling process of the steel plate is required, there are problems such as an increase in the manufacturing cost of the cage for the rolling bearing and an increase in the time required for the manufacture.

【0006】また、上記の製造工程の打抜き工程におい
ては、円形の穴を開ける際に円形の鋼板が排出される。
この円板(以降は、打抜き板と記す)は転がり軸受用保
持器を製造するための円板(ブランク)よりも小径であ
るから、前記転がり軸受用保持器よりも小型の転がり軸
受用保持器の製造のためのブランクとして使用可能とも
考えられるが、その板厚が小型の転がり軸受用保持器の
製造用のブランクとしては厚すぎることから、ブランク
として利用されることなくスクラップとして廃棄されて
いた。
In the punching step of the manufacturing process, a circular steel plate is discharged when a circular hole is formed.
Since this disk (hereinafter, referred to as a punched plate) has a smaller diameter than a disk (blank) for manufacturing a cage for a rolling bearing, a cage for a rolling bearing smaller than the cage for a rolling bearing. Is considered to be usable as a blank for the manufacture of small rolling bearings, but since its thickness is too thick for the manufacture of small rolling bearing cages, it was discarded as scrap without being used as a blank .

【0007】そこで、本発明は上記のような従来の転が
り軸受用保持器の製造方法が有する問題点を解決し、所
定の肉厚を有する転がり軸受用保持器を前記肉厚よりも
厚い板厚の鋼板から製造する方法を提供することを課題
とする。
Accordingly, the present invention solves the above-mentioned problems of the conventional method for manufacturing a rolling bearing cage, and reduces the thickness of a rolling bearing cage having a predetermined thickness to a thickness greater than the thickness. It is an object of the present invention to provide a method for manufacturing from a steel sheet.

【0008】[0008]

【課題を解決するための手段】前記課題を解決するた
め、本発明は次のような構成からなる。すなわち本発明
の転がり軸受用保持器の製造方法は、所定の肉厚t1
有する転がり軸受用保持器を前記肉厚t1 よりも厚い板
厚t0 の鋼板から製造する方法において、前記鋼板の少
なくとも一部の板厚t0 を冷間塑性加工法により前記肉
厚t1 に薄肉化し、その薄肉化を、式η={(t0 −t
1 )/t0 }×100(%)で定義される肉厚減少率η
を40%以下にして行うことを特徴とする。
In order to solve the above problems, the present invention has the following arrangement. That method of manufacturing a rolling bearing cage of the present invention, there is provided a method of producing the rolling bearing retainer having a predetermined thickness t 1 of a steel plate of larger thickness t 0 than the thick t 1, the steel plate At least a portion of the thickness t 0 by cold plastic working method thinned to the thickness t 1, the thinner, the formula eta = {(t 0 -t of
1 ) / t 0 } × 100 (%)
Is set to 40% or less.

【0009】このような構成であれば、製造する転がり
軸受用保持器の肉厚t1 よりも鋼板の板厚t0 が厚い場
合であっても、冷間塑性加工法により前記鋼板を薄肉化
して所望の厚さに加工して転がり軸受用保持器を製造す
ることができるので、製造する転がり軸受用保持器の肉
厚t1 によって鋼板を選択する必要がなく、1種の板厚
の鋼板から種々の肉厚(サイズ)の転がり軸受用保持器
を製造することが可能である。
[0009] With such a configuration, even when thicker plate thickness t 0 of the steel sheet than the thickness t 1 of the rolling bearing retainer of manufacturing, the steel sheet was thinned by cold plastic working method The rolling bearing cage can be manufactured by processing to a desired thickness, so that it is not necessary to select a steel plate according to the thickness t 1 of the rolling bearing cage to be manufactured, and a steel plate of one type Can manufacture rolling bearing retainers having various thicknesses (sizes).

【0010】また、必要な鋼板の種類を少なくするた
め、事前に鋼板を圧延して、製造する転がり軸受用保持
器の肉厚t1 に合うような板厚の鋼板を製造し、その鋼
板を使用して転がり軸受用保持器を製造するという方法
を採用する必要がないので、鋼板の圧延を行うことによ
って転がり軸受用保持器の製造コストが上昇する問題
や、製造に要する時間が長くなる問題等が生じることが
ない。
[0010] Further, in order to reduce the kinds of necessary steel plates, the steel plates are rolled in advance to produce steel plates having a thickness suitable for the thickness t 1 of the rolling bearing cage to be manufactured. There is no need to adopt a method of manufacturing a rolling bearing cage by using it.Therefore, the problem of increasing the manufacturing cost of the rolling bearing cage by rolling the steel plate and increasing the time required for manufacturing Etc. do not occur.

【0011】また、本発明の転がり軸受用保持器の製造
方法によれば、大型の転がり軸受用保持器の製造工程に
おいて排出される廃材(該製造工程の打抜き工程におい
て排出される打抜き板)をブランクとして使用して、前
記大型の転がり軸受用保持器よりも小型の転がり軸受用
保持器を製造することが可能である。したがって、転が
り軸受用保持器の製造において、材料歩留まりの向上,
コストダウン,資源の有効利用等を図ることができる。
Further, according to the method for manufacturing a cage for a rolling bearing of the present invention, a waste material (a punched plate discharged in a punching step of the manufacturing process) discharged in a manufacturing process of a large-sized rolling bearing cage is manufactured. By using it as a blank, it is possible to manufacture a rolling bearing cage smaller than the large rolling bearing cage. Therefore, in the production of cages for rolling bearings, it is possible to improve the material yield,
Cost reduction and effective use of resources can be achieved.

【0012】ただし、前記肉厚減少率ηは40%以下で
あることが好ましい。前記肉厚減少率ηが40%を越え
ると、転がり軸受用保持器の外形形状の加工精度が低下
したり、該保持器の冷間塑性加工を施した部分が肌荒れ
を起こす等の加工不良が生じやすくなる。なお、前記肉
厚減少率ηは0%でもよい。本発明における冷間塑性加
工法として採用される加工法は、鋼板の板厚を薄肉化す
ることが可能であれば特に限定されるものではないが、
しごきスピニング加工法等のしごき加工法が好適に使用
される。
However, the thickness reduction rate η is preferably 40% or less. When the wall thickness reduction rate η exceeds 40%, processing defects such as a reduction in processing accuracy of the outer shape of the cage for the rolling bearing and a roughening of the cold-worked part of the cage in the cage are caused. It is easy to occur. The thickness reduction rate η may be 0%. The working method adopted as the cold plastic working method in the present invention is not particularly limited as long as the thickness of the steel sheet can be reduced,
An ironing method such as an ironing spinning method is preferably used.

【0013】[0013]

【発明の実施の形態】本発明に係る転がり軸受用保持器
の製造方法の実施の形態を、図面を参照して詳細に説明
する。図1は、本発明の転がり軸受用保持器の製造方法
の一実施形態を示す工程図であって、円板ブランク11
から円すいころ軸受用保持器10(以降は、第一保持器
と記す)を製造する過程(図1の(a)に示す第一保持
器の製造工程)において排出される廃材(打抜き板2
1)をブランクとして使用して、第一保持器10よりも
小型の円すいころ軸受用保持器20(以降は、第二保持
器と記す)を製造する工程(図1の(b)に示す第二保
持器の製造工程)を示している。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for manufacturing a cage for a rolling bearing according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a process diagram showing one embodiment of a method for manufacturing a cage for a rolling bearing according to the present invention.
Waste material (punched plate 2) discharged in the process of manufacturing the tapered roller bearing retainer 10 (hereinafter, referred to as the first retainer) (the manufacturing process of the first retainer shown in FIG. 1A).
A step of manufacturing a tapered roller bearing retainer 20 (hereinafter, referred to as a second retainer) smaller than the first retainer 10 by using 1) as a blank (the first retainer shown in FIG. 1B). (Manufacturing process of a double cage).

【0014】円すいころ軸受(内径90mm、外径16
0mm)用の第一保持器10を製造するのに好適な板厚
(t=2.9mm)の鋼板を打ち抜いて、円板ブランク
11を板取りする(板取り工程)。この円板ブランク1
1を絞りプレス加工法により絞り加工し、カップ状に成
形する(絞り工程)。次に、このカップ状物12の筒状
部12aの開口端を切削バイト34により切削して、縁
端を滑らかにする(切削工程)。そして、カップ状物1
2の底板部12bを打ち抜いて円形の穴13を開け(打
抜き工程)、さらに筒状部12aに円周方向に沿って複
数の矩形の穴を開け、ポケット14を形成する(ポケッ
ト形成工程)。そしてさらに、柱15を形成して(柱形
成工程)、大型の第一保持器10を完成する。第一保持
器10の肉厚は、筒状部12a,底板部12b共に2.
9mmであった。
Tapered roller bearings (inner diameter 90 mm, outer diameter 16
A steel blank having a thickness (t = 2.9 mm) suitable for manufacturing the first retainer 10 for 0 mm) is punched, and the disc blank 11 is stripped (plate stripping step). This disk blank 1
1 is drawn by a drawing press working method and formed into a cup shape (drawing step). Next, the opening end of the cylindrical portion 12a of the cup-shaped object 12 is cut by a cutting bit 34 to make the edge smooth (cutting step). And cup-shaped material 1
The second bottom plate 12b is punched to form a circular hole 13 (punching step), and a plurality of rectangular holes are further formed in the cylindrical part 12a along the circumferential direction to form a pocket 14 (pocket forming step). Then, the pillars 15 are further formed (pillar forming step) to complete the large first retainer 10. The thickness of the first retainer 10 is set to 2 in both the cylindrical portion 12a and the bottom plate portion 12b.
9 mm.

【0015】この製造工程の打抜き工程、すなわち、底
板部12bを打ち抜いて円形の穴13を開けた際に排出
される円形の鋼板である打抜き板21は、通常は、ポケ
ット形成工程において排出される複数の矩形の鋼板と共
にスクラップとして廃棄されるが、本実施形態において
は、円すいころ軸受(内径50mm、外径90mm)用
の第二保持器20を製造するための円板ブランクとして
使用するため、図1の(b)に示す第二保持器の製造工
程に送られる。
The punching plate 21, which is a circular steel plate that is discharged when the circular hole 13 is formed by punching the bottom plate portion 12b, is normally discharged in the pocket forming step. Although discarded together with a plurality of rectangular steel plates as scrap, in the present embodiment, since it is used as a disk blank for manufacturing the second retainer 20 for tapered roller bearings (inner diameter 50 mm, outer diameter 90 mm), It is sent to the manufacturing process of the second cage shown in FIG.

【0016】第二保持器20は、第一保持器10とほぼ
同様の方法で製造される。ただし、打抜き板21の板厚
(2.9mm)が小径の第二保持器20の肉厚としては
厚いので、適切な肉厚に薄肉化する必要がある。第一保
持器10の製造工程において排出された円形の打抜き板
21(直径116.0mm)を円板ブランクとして、絞
りスピニング加工法により絞り加工し、カップ状に成形
する(絞り工程)。このときの絞りスピニング加工の条
件は、0.1mm/rev.で、潤滑油としてユシロー
ケンEC−50(ユシロ化学工業株式会社製)を使用し
た。
The second cage 20 is manufactured in substantially the same manner as the first cage 10. However, since the thickness (2.9 mm) of the punched plate 21 is large as the thickness of the small-diameter second retainer 20, it is necessary to reduce the thickness to an appropriate thickness. The circular punched plate 21 (diameter 116.0 mm) discharged in the manufacturing process of the first cage 10 is drawn as a disk blank by a drawing spinning method, and formed into a cup shape (drawing step). The condition of the drawing spinning at this time is 0.1 mm / rev. Then, Yushiroken EC-50 (manufactured by Yushiro Chemical Industry Co., Ltd.) was used as a lubricating oil.

【0017】その一例として、板押さえ31,ローラー
32,及びマンドレル(雄金型)33を使用して打抜き
板21に絞りスピニング加工を施し、カップ状物22に
成形する方法を、図2に示す。すなわち、打抜き板21
及びマンドレル33を、絞りスピニング加工の回転軸と
軸心を一致させて配置し、さらに、板押さえ31とマン
ドレル33とで打抜き板21を挟んで固定する。打抜き
板21及びマンドレル33を前記回転軸を中心に回転さ
せながら、前記回転軸方向及び打抜き板21の径方向に
自在に変位するローラー32を、打抜き板21の外周部
に押し当てて塑性変形させ、該外周部をマンドレル33
の外形に沿って湾曲させる。このような操作により、打
抜き板21をマンドレル33の外形形状と同形状に成形
しカップ状とする。なお、ローラー32の代わりに、へ
らを用いてもよい。
As one example, FIG. 2 shows a method of forming a cup 22 by drawing and spinning the punched plate 21 using a plate holder 31, a roller 32, and a mandrel (male mold) 33. . That is, the punched plate 21
The mandrel 33 is arranged so that the rotation axis and the axis of the drawing spinning process coincide with each other, and the plate holder 31 and the mandrel 33 sandwich and fix the punching plate 21. While rotating the punching plate 21 and the mandrel 33 about the rotation axis, the roller 32 that is freely displaced in the rotation axis direction and the radial direction of the punching plate 21 is pressed against the outer peripheral portion of the punching plate 21 and plastically deformed. , The outer periphery of the mandrel 33
Curve along the outline of. By such an operation, the punching plate 21 is formed into the same shape as the outer shape of the mandrel 33 to form a cup shape. Note that a spatula may be used instead of the roller 32.

【0018】そして該工程では、打抜き板21に絞り加
工を施してカップ状に成形すると共に、形成された筒状
部22aにローラー32により、しごきスピニング加工
を施して、筒状部22aを肉厚方向に塑性変形させ、第
二保持器20の肉厚として好適な厚さ(2.0mm)に
なるように薄肉化する。なお、打抜き板21の板厚が第
二保持器20の肉厚として適する範囲内である場合に
は、上記のような筒状部22aの薄肉化を行わなくても
よい。
In this step, the punched plate 21 is drawn and formed into a cup shape, and the formed cylindrical portion 22a is subjected to ironing and spinning with a roller 32 to make the cylindrical portion 22a thick. The thickness of the second cage 20 is reduced to a suitable thickness (2.0 mm). When the thickness of the punched plate 21 is within a range suitable for the thickness of the second retainer 20, the cylindrical portion 22a need not be thinned as described above.

【0019】次に、このカップ状物22の筒状部22a
の開口端を切削バイト34により切削して、縁端を滑ら
かにする(切削工程)。そして、カップ状物22の底板
部22bを打ち抜いて円形の穴23を開け(打抜き工
程)、さらに筒状部22aに円周方向に沿って複数の矩
形の穴を開け、ポケット24を形成する(ポケット形成
工程)。そしてさらに、柱25を形成して(柱形成工
程)、図3に示すような小型の第二保持器20を完成す
る。
Next, the cylindrical portion 22a of the cup-shaped material 22
Is cut by the cutting tool 34 to make the edge smooth (cutting step). Then, the bottom plate portion 22b of the cup-shaped material 22 is punched to form a circular hole 23 (a punching step), and a plurality of rectangular holes are further formed in the cylindrical portion 22a along the circumferential direction to form the pocket 24 (FIG. Pocket forming step). Then, the pillar 25 is further formed (pillar forming step) to complete the small second retainer 20 as shown in FIG.

【0020】図3のt0 は底板部22bの肉厚、すなわ
ち初期の打抜き板21の板厚であり、t1 はしごきスピ
ニング加工後の筒状部22aの肉厚である。したがっ
て、しごきスピニング加工による薄肉化での肉厚減少率
ηは、下記式により計算されて31.0%となる。 η={(t0 −t1 )/t0 }×100(%) なお、カップ状物22の底板部22bの肉厚は2.9m
mであるが、軸受の組み立て時に保持器の加締め力が過
大となる、又は、保持器が大きくて軸受をハウジングに
組み込むことが困難である等、軸受の製作上あるいは使
用上に問題がある場合には、切削や旋削等を施して、上
記問題の生じないような肉厚に切削加工することが好ま
しい。例えば、図3において点線で示したように筒状部
22aと同程度の肉厚t1 ’(2.0mm)にしてもよ
い。その場合は、t1 ≒t1 ’となる。
In FIG. 3, t 0 is the thickness of the bottom plate portion 22b, that is, the initial thickness of the punched plate 21, and t 1 is the thickness of the cylindrical portion 22a after ironing and spinning. Therefore, the thickness reduction rate η in thinning by ironing spinning is 31.0% as calculated by the following equation. η = {(t 0 −t 1 ) / t 0 } × 100 (%) The thickness of the bottom plate 22 b of the cup 22 is 2.9 m.
m, but there is a problem in the production or use of the bearing, for example, the caulking force of the cage becomes excessive during the assembly of the bearing, or it is difficult to incorporate the bearing into the housing due to the large cage. In such a case, it is preferable to perform cutting, turning, or the like, so that the thickness is reduced so that the above-described problem does not occur. For example, it may be the thickness t 1 of the same level as the cylindrical portion 22a '(2.0 mm) as indicated by a dotted line in FIG. In that case, t 1 ≒ t 1 ′.

【0021】このように、第一保持器10を製造する工
程の打ち抜き工程、すなわち、底板部12bを打ち抜い
て円形の穴13を開ける工程において排出される円形の
打抜き板21を、円板ブランクとして使用して第二保持
器20を製造したので、材料歩留りが従来の方法から約
50%向上され、30%程度となった。よって、資源の
節約にもなった。
As described above, the circular punching plate 21 discharged in the punching step of the step of manufacturing the first retainer 10, that is, the step of punching the bottom plate portion 12b to form the circular hole 13 is used as a disk blank. Since the second retainer 20 was manufactured by using the same, the material yield was improved by about 50% from the conventional method to about 30%. Thus, resources were saved.

【0022】なお、第二保持器20を製造する工程の打
ち抜き工程、すなわち、底板部22bを打ち抜いて円形
の穴23を開けた際に排出される円形の鋼板26は、ポ
ケット形成工程において排出される複数の矩形の鋼板と
共にスクラップとして廃棄してもよいが、第二保持器2
0よりもさらに小型の転がり軸受用保持器を製造するた
めの円板ブランクとして使用してもよい。そうすれば、
材料歩留りをさらに向上させることが可能である。
The circular steel plate 26 discharged when the second retainer 20 is manufactured, that is, when the circular hole 23 is formed by punching the bottom plate 22b, is discharged in the pocket forming step. May be discarded together with a plurality of rectangular steel sheets as scrap.
It may be used as a disc blank for manufacturing a roller bearing cage smaller than zero. that way,
It is possible to further improve the material yield.

【0023】ただし、円板ブランクの板厚と、しごきス
ピニング加工を施して薄肉化した後の肉厚との差が大き
くなると(前記肉厚減少率ηが大きくなると)、完成し
た転がり軸受用保持器の筒状部の真円度が低下したり、
該保持器のしごきスピニング加工を施した部分が肌荒れ
を起こす等の加工不良が生じやすくなる。このような加
工不良が生じないようにするためには、肉厚減少率ηは
40%以下であることが好ましい。
However, when the difference between the thickness of the disk blank and the thickness after thinning by ironing and spinning becomes large (when the above-mentioned thickness reduction rate η becomes large), the completed holding for the rolling bearing is performed. The roundness of the cylindrical part of the vessel decreases,
Processing defects such as roughening of the part of the cage subjected to ironing and spinning are likely to occur. In order to prevent such processing defects from occurring, the thickness reduction rate η is preferably 40% or less.

【0024】また、打抜き板21の直径Φと、第二保持
器の製造コスト及び打抜き板21を廃棄した場合の廃棄
コストとの相関を検討したところ、図4のグラフに示す
ように、打抜き板21の直径Φが35mm未満の範囲で
は製造コストが廃棄コストを上回っているので、コスト
メリットが生じないことが判明した。したがって、打抜
き板21の直径Φは、その下限は特に限定されないが、
35mm以上であることが好ましく、十分なコストメリ
ットを得るためには40mm以上であることがより好ま
しい。
Further, when the correlation between the diameter Φ of the punched plate 21 and the manufacturing cost of the second cage and the disposal cost when the punched plate 21 was discarded was examined, as shown in the graph of FIG. In the case where the diameter Φ of the sample No. 21 is less than 35 mm, the production cost exceeds the disposal cost. Therefore, the lower limit of the diameter Φ of the punched plate 21 is not particularly limited,
It is preferably at least 35 mm, and more preferably at least 40 mm in order to obtain a sufficient cost merit.

【0025】なお、打抜き板21の直径Φの上限は特に
限定されるものではない。例えば、鋼板製の保持器を使
用して通常製造されている、内径φが600mm程度の
軸受に適用する円すいころ軸受用保持器のような大型の
保持器を製造するための大径の円板ブランクでも差し支
えない。ただし、寸法の大きい軸受ほど製造数量が少な
い傾向があるので、コストメリットが小さくなる傾向と
なる。
The upper limit of the diameter Φ of the punched plate 21 is not particularly limited. For example, a large-diameter disc for manufacturing a large-sized cage such as a tapered roller bearing cage applied to a bearing having an inner diameter φ of about 600 mm, which is usually manufactured using a steel plate cage. A blank can be used. However, the larger the size of the bearing, the smaller the production quantity tends to be, so that the cost merit tends to be reduced.

【0026】これらのことから、肉厚減少率ηが40%
以下で、且つ打抜き板21の直径Φが40mm以上であ
れば、加工面,コスト面共に好ましいことがわかる。こ
れらのことを簡略的に示したものが図5のグラフであ
る。すなわち、表1に示すように、種々の直径の打抜き
板21に上記のようなしごきスピニング加工を施して、
各々の肉厚減少率ηとなるように薄肉化した。どの場合
も、肌荒れを起こす等の加工不良は生じず、また、コス
トメリットも十分であった。これらの結果をプロットし
たものが図5のグラフであり、表1の結果はすべて、加
工不良が生じず、且つ、コストメリットが十分に生じる
領域にあることがわかる。
From these facts, it can be seen that the thickness reduction rate η is 40%
In the following, it is understood that if the diameter Φ of the punched plate 21 is 40 mm or more, both the processing surface and the cost are favorable. FIG. 5 is a graph simply showing these points. That is, as shown in Table 1, punching plates 21 having various diameters are subjected to the above-described ironing spinning,
The thickness was reduced so as to achieve the respective thickness reduction rates η. In each case, processing defects such as roughening of the skin did not occur, and the cost merit was sufficient. FIG. 5 is a graph in which these results are plotted, and it can be seen that all the results in Table 1 are in a region where no processing defects occur and a sufficient cost merit is generated.

【0027】[0027]

【表1】 [Table 1]

【0028】以上のように、本実施形態の転がり軸受用
保持器の製造方法によれば、大型の転がり軸受用保持器
(第一保持器10)の製造工程において排出された廃材
(打抜き工程において排出された円形の打抜き板21)
をブランクとして使用して、前記大型の転がり軸受用保
持器よりも小型の転がり軸受用保持器(第二保持器2
0)を製造することができる。したがって、転がり軸受
用保持器の製造に際して、材料歩留まりの向上,コスト
ダウン,資源の有効利用等を図ることが可能である。
As described above, according to the method for manufacturing a cage for a rolling bearing of the present embodiment, the waste material discharged in the manufacturing process of the large cage for a rolling bearing (first cage 10) (in the punching process). Discharged circular punching plate 21)
Is used as a blank, and a cage for a rolling bearing smaller than the cage for a large rolling bearing (the second cage 2).
0) can be produced. Therefore, it is possible to improve the material yield, reduce costs, and effectively use resources when manufacturing the rolling bearing cage.

【0029】また、その際の肉厚減少率ηを31.0%
と40%以下にしたので、加工上の問題を起こすことな
く転がり軸受用保持器を製造することができる。さら
に、製造する転がり軸受用保持器の肉厚よって材料であ
る鋼板の板厚を選択する必要がないので、用意する鋼板
の板厚の種類を少なくすることができ、鋼板在庫量が削
減できる。
In this case, the thickness reduction rate η is 31.0%.
And 40% or less, it is possible to manufacture a rolling bearing retainer without causing any processing problems. Further, since it is not necessary to select the thickness of the steel plate as a material depending on the thickness of the rolling bearing retainer to be manufactured, the types of the prepared steel plates can be reduced, and the stock of the steel plate can be reduced.

【0030】なお、本実施形態は本発明の一例を示した
ものであって、本発明は本実施形態に限定されるもので
はない。例えば、本実施形態においては、転がり軸受用
保持器として円すいころ軸受用保持器を例示して説明し
たが、本発明の転がり軸受用保持器の製造方法は、他の
種類の様々な転がり軸受用保持器に対して適用すること
ができる。例えば、円筒ころ軸受用保持器,自動調心こ
ろ軸受用保持器,深みぞ玉軸受用保持器,アンギュラ玉
軸受用保持器等である。
Note that the present embodiment is an example of the present invention, and the present invention is not limited to the present embodiment. For example, in the present embodiment, a tapered roller bearing retainer has been described as an example of a rolling bearing retainer, but the method of manufacturing a rolling bearing retainer of the present invention is applicable to various types of rolling bearings. Applicable to retainers. For example, cages for cylindrical roller bearings, cages for spherical roller bearings, cages for deep groove ball bearings, cages for angular ball bearings, and the like.

【0031】[0031]

【発明の効果】以上のように、本発明の転がり軸受用保
持器の製造方法によれば、鋼板の板厚が製造する転がり
軸受用保持器の肉厚よりも厚い場合であっても、冷間塑
性加工法により前記鋼板を薄肉化し所望の厚さに加工し
て、転がり軸受用保持器を製造することができるので、
製造する転がり軸受用保持器の肉厚よって材料である鋼
板を選択する必要がない。したがって、1種の板厚の鋼
板から種々の肉厚(サイズ)の転がり軸受用保持器を製
造することが可能である。
As described above, according to the method for manufacturing a cage for a rolling bearing of the present invention, even if the thickness of the steel plate is thicker than the thickness of the cage for the rolling bearing to be manufactured, the cold rolling can be performed. Since the steel sheet is thinned and processed to a desired thickness by a cold working method, a cage for a rolling bearing can be manufactured.
It is not necessary to select a steel plate as a material depending on the thickness of the rolling bearing cage to be manufactured. Therefore, it is possible to manufacture rolling bearing retainers of various thicknesses (sizes) from a single type of steel plate.

【0032】また、必要な鋼板の種類を少なくするた
め、事前に鋼板を圧延して、製造する転がり軸受用保持
器の肉厚に合うような板厚の鋼板を製造し、その鋼板を
使用して転がり軸受用保持器を製造するという方法を採
用する必要がないので、鋼板の圧延を行うことによって
転がり軸受用保持器の製造コストが上昇する問題や、製
造に要する時間が長くなる問題等が生じることがない。
Further, in order to reduce the number of necessary steel sheets, the steel sheets are rolled in advance to produce steel sheets having a thickness suitable for the thickness of the rolling bearing cage to be manufactured. It is not necessary to adopt the method of manufacturing a cage for rolling bearings.Therefore, there is a problem that the rolling cost of a rolling bearing increases due to the rolling of a steel sheet, and a problem that the time required for manufacturing becomes long. Will not occur.

【0033】さらに、大型の転がり軸受用保持器の製造
工程において排出された廃材である打抜き板をブランク
として使用して、前記大型の転がり軸受用保持器よりも
小型の保持器を製造することが可能である。したがっ
て、転がり軸受用保持器の製造において、材料歩留まり
の向上,コストダウン,資源の有効利用等を図ることが
できる。
Further, it is possible to manufacture a cage smaller than the large-sized rolling bearing cage by using, as a blank, a punched plate that is waste material discharged in a manufacturing process of the large-sized rolling bearing cage. It is possible. Therefore, in the production of the cage for the rolling bearing, it is possible to improve the material yield, reduce the cost, and effectively use the resources.

【0034】さらにまた、転がり軸受用保持器を製造す
る際の肉厚減少率ηを40%以下としたので、該転がり
軸受用保持器の外形形状の加工精度が低下したり、該転
がり軸受用保持器の冷間塑性加工を施した部分が肌荒れ
を起こす等の加工上の問題を起こすことなく転がり軸受
用保持器を製造することができる。
Furthermore, since the thickness reduction rate η in manufacturing the rolling bearing cage is set to 40% or less, the processing accuracy of the outer shape of the rolling bearing cage is reduced, or the rolling bearing cage is reduced. The rolling bearing cage can be manufactured without causing any processing problem such as roughening of the portion of the cage subjected to cold plastic working.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の転がり軸受用保持器の製造方法の一実
施形態を示す工程図である。
FIG. 1 is a process diagram showing one embodiment of a method for manufacturing a cage for a rolling bearing of the present invention.

【図2】スピニング加工の方法を示す説明図である。FIG. 2 is an explanatory view showing a spinning method.

【図3】第二保持器の縦断面図である。FIG. 3 is a vertical sectional view of a second cage.

【図4】打抜き板の直径Φと、第二保持器の製造コスト
及び打抜き板を廃棄した場合の廃棄コストとの相関を示
すグラフである。
FIG. 4 is a graph showing a correlation between a diameter Φ of a punched plate, a manufacturing cost of a second cage, and a disposal cost when the punched plate is discarded.

【図5】打抜き板の直径Φ及び肉厚減少率ηの本実施形
態における範囲を簡略的に示した図である。
FIG. 5 is a diagram schematically showing a range of a diameter Φ and a thickness reduction rate η of a punched plate in the present embodiment.

【符号の説明】[Explanation of symbols]

10 第一保持器 11 円板ブランク 12a,22a 筒状部 12b,22b 底板部 20 第二保持器 21 打抜き板 DESCRIPTION OF SYMBOLS 10 First retainer 11 Disc blank 12a, 22a Tubular part 12b, 22b Bottom plate part 20 Second retainer 21 Punched plate

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 所定の肉厚t1 を有する転がり軸受用保
持器を前記肉厚t1よりも厚い板厚t0 の鋼板から製造
する方法において、前記鋼板の少なくとも一部の板厚t
0 を冷間塑性加工法により前記肉厚t1 に薄肉化し、そ
の薄肉化を、式η={(t0 −t1 )/t0 }×100
(%)で定義される肉厚減少率ηを40%以下にして行
うことを特徴とする転がり軸受用保持器の製造方法。
1. A method for the rolling bearing retainer for producing a thick steel plate having a plate thickness of t 0 than the thick t 1 having a predetermined thickness t 1, at least a portion of the plate thickness t of the steel sheet
0 is thinned by the cold plastic working method to the above-mentioned thickness t 1 , and the thinning is performed by the formula η = {(t 0 −t 1 ) / t 0 } × 100.
A method for manufacturing a rolling bearing cage, wherein the thickness reduction rate η defined by (%) is set to 40% or less.
JP34452599A 1999-12-03 1999-12-03 Method of manufacturing rolling bearing cage Pending JP2001165170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34452599A JP2001165170A (en) 1999-12-03 1999-12-03 Method of manufacturing rolling bearing cage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34452599A JP2001165170A (en) 1999-12-03 1999-12-03 Method of manufacturing rolling bearing cage

Publications (2)

Publication Number Publication Date
JP2001165170A true JP2001165170A (en) 2001-06-19
JP2001165170A5 JP2001165170A5 (en) 2004-10-28

Family

ID=18369960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34452599A Pending JP2001165170A (en) 1999-12-03 1999-12-03 Method of manufacturing rolling bearing cage

Country Status (1)

Country Link
JP (1) JP2001165170A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104159684A (en) * 2012-03-07 2014-11-19 中西金属工业株式会社 Roller bearing cage and manufacturing method therefor as well as roller bearing manufacturing method
CN104847795A (en) * 2015-04-20 2015-08-19 江苏省社渚轴承有限公司 Processing method of bearing retainer
WO2024125712A1 (en) * 2022-12-12 2024-06-20 Schaeffler Technologies AG & Co. KG Rolling bearing cage and method for producing a rolling bearing cage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104159684A (en) * 2012-03-07 2014-11-19 中西金属工业株式会社 Roller bearing cage and manufacturing method therefor as well as roller bearing manufacturing method
CN104159684B (en) * 2012-03-07 2016-10-05 中西金属工业株式会社 Retainer for roller bearing and manufacture method thereof and the manufacture method of roller bearing
CN104847795A (en) * 2015-04-20 2015-08-19 江苏省社渚轴承有限公司 Processing method of bearing retainer
WO2024125712A1 (en) * 2022-12-12 2024-06-20 Schaeffler Technologies AG & Co. KG Rolling bearing cage and method for producing a rolling bearing cage

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