JP2016031131A - Wave type holder, and its manufacturing process - Google Patents

Wave type holder, and its manufacturing process Download PDF

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JP2016031131A
JP2016031131A JP2014154974A JP2014154974A JP2016031131A JP 2016031131 A JP2016031131 A JP 2016031131A JP 2014154974 A JP2014154974 A JP 2014154974A JP 2014154974 A JP2014154974 A JP 2014154974A JP 2016031131 A JP2016031131 A JP 2016031131A
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Prior art keywords
rivet
annular holding
holding plate
press
surface treatment
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聡太郎 郡嶋
Sotaro Korishima
聡太郎 郡嶋
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NSK Ltd
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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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/42—Ball cages made from wire or sheet metal strips
    • F16C33/422—Ball cages made from wire or sheet metal strips made from sheet metal
    • F16C33/427—Ball cages made from wire or sheet metal strips made from sheet metal from two parts, e.g. ribbon cages with two corrugated annular parts
    • 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
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls

Abstract

PROBLEM TO BE SOLVED: To provide a wave type holder for suppressing the plastic deformation of the opening periphery of a rivet hole and to process an abutment part against the head bottom face of a rivet at the time of a surface treatment.SOLUTION: In a manufacturing method of a surface-treated wave type holder, a rivet having at least one projection formed on a head bottom face is press-fitted in a rivet hole of one annular holding plate, and a surface treatment is performed in the press-fit state. After this, connection is performed through the additional fastening by the other annular holding plate ad the rivet. Consequently, not only the surfaces of the annular holding plate and the rivet but also an abutment face of an annular holding plate against the bottom face of the head part of the rivet is surface-treated.SELECTED DRAWING: Figure 4

Description

本発明は、窒化層形成等の表面処理が施された波型保持器、並びにその製造方法に関する。   The present invention relates to a corrugated cage that has been subjected to surface treatment such as formation of a nitride layer, and a method for manufacturing the same.

図６に示すように、玉軸受の波型保持器１は、一対の金属製の環状保持板１Ａ，１Ｂをリベット４で連結して構成されている。環状保持板１Ａ，１Ｂは同じ形状であり、周方向に沿って平坦部２，３と半円状の湾曲部５，６とが交互に形成されており、全体が略波形に形成されている。そして、一対の環状保持板１Ａ，１Ｂの平坦部２，３同士を突き合わせ、リベット４で加締めて連結することで波型保持器１となる。この波型保持器１では、各環状保持板１Ａ，１Ｂの対面する湾曲部５，６同士が玉７を包んで保持するポケット８を形成する。   As shown in FIG. 6, the corrugated cage 1 of the ball bearing is configured by connecting a pair of metal annular retaining plates 1 </ b> A and 1 </ b> B with rivets 4. The annular holding plates 1A and 1B have the same shape, and flat portions 2 and 3 and semicircular curved portions 5 and 6 are alternately formed along the circumferential direction, and the whole is formed in a substantially waveform. . Then, the flat portions 2 and 3 of the pair of annular holding plates 1 </ b> A and 1 </ b> B are brought into contact with each other, and are crimped with a rivet 4 to be connected to form a corrugated cage 1. In the corrugated cage 1, the curved portions 5 and 6 facing each other of the annular holding plates 1 </ b> A and 1 </ b> B form a pocket 8 that wraps and holds the ball 7.

しかしながら、この連結状態において、図７に示すように、平坦部２のリベット穴１０とリベット４の頭部底面４ａとの当接部２０の周辺や、平坦部３のリベット穴１１とリベット４の加締部４Ａの底面４Ａａとの当接部２１の周辺が塑性変形して陥没し、これら部位が軸受稼働時に破損するおそれがある。   However, in this connected state, as shown in FIG. 7, the periphery of the contact portion 20 between the rivet hole 10 of the flat portion 2 and the head bottom surface 4 a of the rivet 4, the rivet hole 11 of the flat portion 3 and the rivet 4. The periphery of the contact portion 21 with the bottom surface 4Aa of the caulking portion 4A is plastically deformed and collapses, and these portions may be damaged when the bearing is operated.

また、波型保持器１に表面処理を施して種々の特性を向上させることも行われている。例えば特許文献１では、環状保持板１Ａ，１Ｂの表面やリベット４の表面に窒化層を形成して硬度や耐摩耗性を向上させている。   In addition, surface treatment is applied to the corrugated cage 1 to improve various characteristics. For example, in Patent Document 1, a nitride layer is formed on the surfaces of the annular holding plates 1A and 1B and the rivets 4 to improve hardness and wear resistance.

特許文献１では、窒化層の形成を、リベット４を両環状保持板１Ａ，１Ｂに仮止めした状態で、もしくは何れか一方の環状保持板１Ａ（１Ｂ）に圧入した状態で、窒化層を形成させている。この圧入は、環状保持板１Ａ，１Ｂの平坦部２，３に設けたリベット穴からリベット４が抜け落ちないように、リベット穴をリベット４よりも若干小径とし、このリベット穴にリベット４を押し込むことで行われる。そのため、図８に一方の環状保持板１Ａにリベット４を圧入して窒化層を形成した場合を示すが、図中ハッチングで示すように、平坦部２のリベット穴１０の側壁や、リベット４の頭部底面４ａとの当接部２０には窒化層が形成されない。   In Patent Document 1, the nitrided layer is formed in a state where the rivet 4 is temporarily fixed to both the annular holding plates 1A and 1B, or in a state where the nitrided layer is press-fitted into one of the annular holding plates 1A (1B). I am letting. This press-fitting is performed so that the rivet hole is slightly smaller in diameter than the rivet 4 so that the rivet 4 does not fall out of the rivet hole provided in the flat portions 2 and 3 of the annular holding plates 1A and 1B, and the rivet 4 is pushed into the rivet hole. Done in Therefore, FIG. 8 shows the case where the rivet 4 is press-fitted into one annular holding plate 1A to form a nitrided layer, but as shown by hatching in the figure, the side wall of the rivet hole 10 of the flat portion 2 and the rivet 4 The nitride layer is not formed on the contact portion 20 with the head bottom surface 4a.

特開平１０−２８１１６３号公報JP-A-10-281163

本発明はこのような状況に鑑みてなされたものであり、リベット穴の開口周辺の塑性変形を抑えるとともに、表面処理を施す際にリベットの頭部底面との当接部にも処理を施すことを目的とする。   The present invention has been made in view of such a situation, and suppresses plastic deformation around the opening of the rivet hole, and also performs processing on the contact portion with the bottom surface of the head of the rivet when performing surface treatment. With the goal.

上記課題を解決するために本発明は、下記の波型保持器及びその製造方法を提供する。
（１）周方向に沿って、玉の保持部となる半円状の湾曲部と、平坦部とを交互に複数形成してなる金属製の環状保持板を一対、平坦部同士を突き合わせてリベットにより加締めて連結してなり、環状保持板及びリベットに表面処理が施された波型保持器の製造方法において、
頭部底面に少なくとも１つの突起が形成されたリベットを、一方の環状保持板のリベット穴に圧入し、圧入状態のまま表面処理を行った後、他方の環状保持板と平坦部同士を突き合わせ、リベットを加締めることを特徴とする波型保持器の製造方法。
（２）上記（１）に記載の製造方法により得られ、かつ、
環状保持板及びリベットの表面とともに、環状保持板のリベットの頭部底面との当接面も表面処理されていることを特徴とする波型保持器。 In order to solve the above problems, the present invention provides the following corrugated cage and a method for manufacturing the same.
(1) A pair of metal annular holding plates formed by alternately forming a plurality of semicircular curved portions serving as ball holding portions and flat portions along the circumferential direction, and the flat portions are brought into contact with each other to rivet In the manufacturing method of the corrugated cage in which the surface treatment is applied to the annular holding plate and the rivet,
A rivet having at least one protrusion formed on the bottom surface of the head is press-fitted into a rivet hole of one annular holding plate, surface treatment is performed in the press-fitted state, and then the other annular holding plate and flat portions are brought into contact with each other. A method of manufacturing a corrugated cage characterized by caulking rivets.
(2) obtained by the production method described in (1) above, and
A corrugated cage characterized in that the surface of the annular holding plate and the rivet as well as the contact surface of the annular holding plate with the bottom surface of the rivet are surface-treated.

本発明によれば、頭部底面に突起を有するリベットを、一方の環状保持板のリベット穴に仮止めした状態で表面処理を行うため、リベットの頭部底面と環状保持板の表面との間に隙間が形成され、この隙間にも表面処理剤が入り込む。そのため、従来では未処理であった、リベットの頭部底面と環状保持板との当接面にも表面処理を施すことができる。   According to the present invention, the surface treatment is performed in a state where the rivet having the protrusion on the bottom surface of the head is temporarily fixed to the rivet hole of one of the annular holding plates. A gap is formed in the surface, and the surface treatment agent enters the gap. Therefore, surface treatment can be applied to the contact surface between the bottom surface of the rivet head and the annular holding plate, which has not been processed in the past.

また、リベットを加締めて環状保持板同士を連結した場合も、リベットの頭部底面の突起が圧潰されるだけであり、従来のようにリベット穴の開口周辺が塑性変形して損傷することを防ぐことができる。   Also, when the rivets are caulked and the annular holding plates are connected to each other, the protrusions on the bottom surface of the rivet head are only crushed, and the periphery of the opening of the rivet hole is plastically deformed and damaged as in the prior art. Can be prevented.

本発明で用いるリベットを示す側面図である。It is a side view which shows the rivet used by this invention. 本発明で用いるリベットの他の例を示す側面図である。It is a side view which shows the other example of the rivet used by this invention. 本発明で用いるリベットの突起の例を示す拡大図である。It is an enlarged view which shows the example of the protrusion of a rivet used by this invention. 本発明により窒化層を形成した状態を示す断面図である。It is sectional drawing which shows the state in which the nitride layer was formed by this invention. 本発明により環状保持板同士を連結した状態を示す断面図である。It is sectional drawing which shows the state which connected the annular holding plates by this invention. 波型保持器を示す斜視図である。It is a perspective view which shows a waveform holder. 従来のリベットを用いて環状保持板同士を連結した状態を示す断面図である。It is sectional drawing which shows the state which connected the annular holding plates using the conventional rivet. 従来のリベットを用いて窒化層を形成した状態を示す断面図である。It is sectional drawing which shows the state which formed the nitride layer using the conventional rivet.

以下、本発明に関して図面を参照して詳細に説明する。   Hereinafter, the present invention will be described in detail with reference to the drawings.

本発明の波型保持器として、図６に示したような、一対の環状保持板１Ａ，１Ｂの平坦部２，３を突き合わせ、リベット４で連結した波型保持器１を例示することができる。   As the corrugated cage of the present invention, a corrugated cage 1 can be illustrated in which the flat portions 2 and 3 of the pair of annular retaining plates 1A and 1B are abutted and connected by rivets 4 as shown in FIG. .

但し、リベット４として、図１に示すように、頭部底面４ａに突起３０を形成したものを使用する。尚、突起３０は、図２に示すように、周方向に等間隔で複数形成してもよい。また、突起３０は図１及び図２では半球状であるが、例えば図３（ａ）に示すような角柱型、図３（ｂ）に示すような角錐型、図３（ｃ）に示すような円柱型、図３（ｄ）に示すようなタブ型（端部が円弧の板状）等とすることができ、他の形状も可能である。尚、図３（ａ）〜（ｄ）において、それぞれの上端面が頭部底面４ａに接続しており、図３（ｂ）では角錐の頂点、図３（ｄ）では円弧部分が下方になるように垂下している。   However, as the rivet 4, as shown in FIG. 1, a rivet having a projection 30 on the bottom face 4a is used. As shown in FIG. 2, a plurality of protrusions 30 may be formed at equal intervals in the circumferential direction. 1 and 2, the projection 30 is hemispherical, but for example, a prismatic shape as shown in FIG. 3A, a pyramid shape as shown in FIG. 3B, and as shown in FIG. 3C. A cylindrical shape, a tab shape as shown in FIG. 3D (a plate shape with an arc at the end), and the like, and other shapes are also possible. 3 (a) to 3 (d), each upper end surface is connected to the head bottom surface 4a. In FIG. 3 (b), the apex of the pyramid, and in FIG. Is drooping.

また、本発明の波型保持器１では、環状保持板１Ａ，１Ｂ及びリベット４の表面に表面処理が施されている。表面処理として、例えば窒化処理を施して表面に窒化層を形成することにより、硬度や耐摩耗性を向上させることができる。窒化層を形成する方法は公知の窒化処理で構わず、例えば、ＮＨ３からなるガス、またはＮＨ３と炭素源とからなる混合ガス（例えばＲＸガス）等の窒化ガス中に、所要の温度で所要の時間保持する。 In the corrugated cage 1 of the present invention, the surface of the annular holding plates 1A and 1B and the rivet 4 is subjected to surface treatment. As the surface treatment, for example, a nitriding treatment is performed to form a nitride layer on the surface, whereby the hardness and the wear resistance can be improved. A method of forming a nitride layer without regard in known nitriding process, for example, a gas consisting of NH 3, or NH 3 and the nitriding gas such as mixed gas of a carbon source (e.g. RX gas), at a required temperature Hold for the required time.

この窒化処理は、一方の環状保持板（ここでは１Ａ）に、リベット４を圧入した状態で行なう。この圧入は、環状保持板１Ａの平坦部２に設けたリベット穴１０からリベット４が抜け落ちないように、リベット穴１０の内径を、リベット４の軸部４ｂの外径よりも若干小径とし、このリベット穴１０にリベット４を押し込むことにより行われる。圧入した際に、図４に示すように、リベット４の突起３０により、環状保持板１Ａの平坦部２と、リベット４の頭部底面４ａとの間に隙間が形成される。そして、この状態で窒化処理を行うと、この隙間にも窒化ガスが流入し、平坦部２では、リベット４の頭部底面４ａとの当接部２０にも窒化層（ハッチング部分）が形成される。また、リベット４では、頭部底面４ａ及び突起３０の表面、更には軸部４ｂの頭部側の一部にも窒化ガスが作用し、これらの部分にも窒化層（ハッチング部分）が形成される。   This nitriding process is performed in a state where the rivet 4 is press-fitted into one annular holding plate (here, 1A). This press-fitting is performed so that the inner diameter of the rivet hole 10 is slightly smaller than the outer diameter of the shaft part 4b of the rivet 4 so that the rivet 4 does not fall out of the rivet hole 10 provided in the flat part 2 of the annular holding plate 1A. This is done by pushing the rivet 4 into the rivet hole 10. When press-fitted, as shown in FIG. 4, a gap is formed between the flat portion 2 of the annular holding plate 1 </ b> A and the head bottom surface 4 a of the rivet 4 by the protrusion 30 of the rivet 4. When nitriding is performed in this state, the nitriding gas also flows into this gap, and in the flat portion 2, a nitriding layer (hatched portion) is also formed in the contact portion 20 with the head bottom surface 4a of the rivet 4. The In the rivet 4, the nitriding gas also acts on the head bottom surface 4a and the surface of the protrusion 30, and also on the head portion of the shaft portion 4b, and a nitrided layer (hatched portion) is also formed on these portions. The

窒化層を形成した後、他方の環状保持板１Ｂと平坦部同士を突き合わせ、リベット４を加締めることにより、波型保持器１が得られる。連結状態を図５に示すが、リベット４の突起３０のみが平坦部２に作用し、しかもリベット４の頭部底面４ａと、平坦部２のリベット４の頭部底面４ａとの当接部２０の両方に同じ窒化層が形成されて同じ硬度になるため、図８に示したようなリベット穴１０，１１の開口周辺における塑性変形をより少なくすることができる。   After forming the nitrided layer, the other annular holding plate 1B and the flat portions are brought into contact with each other and the rivet 4 is caulked to obtain the corrugated cage 1. Although the connected state is shown in FIG. 5, only the projection 30 of the rivet 4 acts on the flat portion 2, and the contact portion 20 between the head bottom surface 4 a of the rivet 4 and the head bottom surface 4 a of the rivet 4 of the flat portion 2. Since the same nitrided layer is formed on both of them and has the same hardness, plastic deformation around the opening of the rivet holes 10 and 11 as shown in FIG. 8 can be further reduced.

上記のように、環状保持板１Ａ，１Ｂの連結に際してリベット４の突起３０が圧潰するため、突起３０が小さく、数が少ないほどリベット穴１０，１１の周辺の塑性変形がより起こりにくくなる。そこで、波型保持器１の大きさに応じて個々の突起３０の突出量（高さ）や、突起３０の数を適宜設定する。   As described above, when the annular holding plates 1A and 1B are connected, the protrusion 30 of the rivet 4 is crushed. Therefore, as the protrusion 30 is smaller and the number is smaller, plastic deformation around the rivet holes 10 and 11 is less likely to occur. Therefore, the protrusion amount (height) of each protrusion 30 and the number of protrusions 30 are appropriately set according to the size of the corrugated cage 1.

１ 波型保持器
１Ａ，１Ｂ 環状保持板
２，３ 平坦部
４ リベット
４ａ 頭部底面
４ｂ 軸部
４Ａ 加締部
１０，１１ リベット穴
３０ 突起 DESCRIPTION OF SYMBOLS 1 Wave type holder | retainer 1A, 1B Annular holding | maintenance board 2, 3 Flat part 4 Rivet 4a Head bottom face 4b Shaft part 4A Clamping part 10, 11 Rivet hole 30 Protrusion

Claims (2)

周方向に沿って、玉の保持部となる半円状の湾曲部と、平坦部とを交互に複数形成してなる金属製の環状保持板を一対、平坦部同士を突き合わせてリベットにより加締めて連結してなり、環状保持板及びリベットに表面処理が施された波型保持器の製造方法において、
頭部底面に少なくとも１つの突起が形成されたリベットを、一方の環状保持板のリベット穴に圧入し、圧入状態のまま表面処理を行った後、他方の環状保持板と平坦部同士を突き合わせ、リベットを加締めることを特徴とする波型保持器の製造方法。 Along the circumferential direction, a pair of metal annular holding plates formed by alternately forming a semicircular curved portion serving as a ball holding portion and a plurality of flat portions, but the flat portions are brought into contact with each other and crimped with rivets In the manufacturing method of the corrugated cage in which the surface treatment is applied to the annular holding plate and the rivet,
A rivet having at least one protrusion formed on the bottom surface of the head is press-fitted into a rivet hole of one annular holding plate, surface treatment is performed in the press-fitted state, and then the other annular holding plate and flat portions are brought into contact with each other. A method of manufacturing a corrugated cage characterized by caulking rivets. 請求項１に記載の製造方法により得られ、かつ、
環状保持板及びリベットの表面とともに、環状保持板のリベットの頭部底面との当接面も表面処理されていることを特徴とする波型保持器。 Obtained by the production method according to claim 1, and
A corrugated cage characterized in that the surface of the annular holding plate and the rivet as well as the contact surface of the annular holding plate with the bottom surface of the rivet are surface-treated.
JP2014154974A 2014-07-30 2014-07-30 Wave type holder, and its manufacturing process Pending JP2016031131A (en)

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Publication number Priority date Publication date Assignee Title
JP2017166620A (en) * 2016-03-17 2017-09-21 Ntn株式会社 Method for manufacturing waveform retainer and its waveform retainer intermediate unit
CN109590708A (en) * 2018-11-19 2019-04-09 镇江市丹徒区开源制刷厂 A kind of riveted pressure head, its manufacture craft and riveting device
CN114198413A (en) * 2022-01-10 2022-03-18 中车株洲电机有限公司 Riveting device and riveting method for bearing retainer
WO2022252586A1 (en) * 2021-06-01 2022-12-08 八环科技集团股份有限公司 Retainer riveting process and electric scroll compressor bearing
JP7365858B2 (en) 2019-11-05 2023-10-20 Ｔｏｙｏ Ｔｉｒｅ株式会社 How to install the stencil plate

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017166620A (en) * 2016-03-17 2017-09-21 Ntn株式会社 Method for manufacturing waveform retainer and its waveform retainer intermediate unit
CN109590708A (en) * 2018-11-19 2019-04-09 镇江市丹徒区开源制刷厂 A kind of riveted pressure head, its manufacture craft and riveting device
JP7365858B2 (en) 2019-11-05 2023-10-20 Ｔｏｙｏ Ｔｉｒｅ株式会社 How to install the stencil plate
WO2022252586A1 (en) * 2021-06-01 2022-12-08 八环科技集团股份有限公司 Retainer riveting process and electric scroll compressor bearing
CN114198413A (en) * 2022-01-10 2022-03-18 中车株洲电机有限公司 Riveting device and riveting method for bearing retainer
CN114198413B (en) * 2022-01-10 2023-10-20 中车株洲电机有限公司 Bearing retainer riveting device and riveting method

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