JPH0121203B2 - - Google Patents

Info

Publication number
JPH0121203B2
JPH0121203B2 JP59085653A JP8565384A JPH0121203B2 JP H0121203 B2 JPH0121203 B2 JP H0121203B2 JP 59085653 A JP59085653 A JP 59085653A JP 8565384 A JP8565384 A JP 8565384A JP H0121203 B2 JPH0121203 B2 JP H0121203B2
Authority
JP
Japan
Prior art keywords
bearing
powder alloy
protrusions
rotating shaft
inner circumferential
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.)
Expired
Application number
JP59085653A
Other languages
Japanese (ja)
Other versions
JPS60230905A (en
Inventor
Shinsaku Tanaka
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.)
Tanashin Denki Co Ltd
Original Assignee
Tanashin Denki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tanashin Denki Co Ltd filed Critical Tanashin Denki Co Ltd
Priority to JP59085653A priority Critical patent/JPS60230905A/en
Publication of JPS60230905A publication Critical patent/JPS60230905A/en
Publication of JPH0121203B2 publication Critical patent/JPH0121203B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • 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
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
    • F16C33/104—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing in a porous body, e.g. oil impregnated sintered sleeve
    • 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
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • F16C33/145—Special methods of manufacture; Running-in of sintered porous bearings
    • 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
    • F16C2220/00—Shaping
    • F16C2220/20—Shaping by sintering pulverised material, e.g. powder metallurgy
    • 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
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/02—Mechanical treatment, e.g. finishing
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/46—Gap sizes or clearances

Description

【発明の詳細な説明】 ［発明の技術分野］ 本発明は、潤滑油を含浸させて使用する粉末合
金軸受の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for manufacturing a powder alloy bearing impregnated with lubricating oil.

［発明の技術的背景］ 粉末合金（オイルレスメタル）の成型により軸
受を製造することは一般に行なわれている。この
ようにして製造された軸受に潤滑油を含浸させて
使用すると、無給油で長期間使用できる。これは
粉末合金に含浸された潤滑油が適宜、内面に浸み
出して軸受内面と回転軸外周面との間の油膜を長
期間にわたつて維持するためである。[Technical Background of the Invention] Bearings are generally manufactured by molding a powder alloy (oil-less metal). When the bearing manufactured in this manner is impregnated with lubricating oil and used, it can be used for a long period of time without lubrication. This is because the lubricating oil impregnated into the powder alloy appropriately seeps into the inner surface and maintains an oil film between the inner surface of the bearing and the outer peripheral surface of the rotating shaft for a long period of time.

しかしながら、成型品には寸法精度に限界があ
り、あまり高度な、たとえばμmオーダーの精度
は期待できない。そこで、高度な寸法精度が要求
される場合には軸受内面をリーマ等による二次加
工により仕上げ、さらに必要に応じて鏡面仕上げ
を行なつている。 However, molded products have a limit to their dimensional accuracy, and very high precision, for example on the μm order, cannot be expected. Therefore, when a high degree of dimensional accuracy is required, the inner surface of the bearing is finished by secondary processing using a reamer or the like, and further mirror-finished if necessary.

［背景技術の問題点］ ところが、このような二次加工を施すと、仕上
げ面では粉末合金特有の細孔がつぶれて目詰りを
生じ、潤滑油の浸み出し効果が損われてしまう。
その結果、軸受け内部に含浸された潤滑油がまだ
消費され切つていないにも拘らず、回転軸と軸受
内周面との間に焼付等を生じることも多々あつ
た。[Problems with Background Art] However, when such secondary processing is performed, the pores peculiar to powder alloys are crushed and clogged on the finished surface, impairing the lubricating oil leaching effect.
As a result, even though the lubricating oil impregnated inside the bearing has not been completely consumed, seizures and the like often occur between the rotating shaft and the inner circumferential surface of the bearing.

［発明の目的］ 本発明はこのような事情にもとづいてなされた
もので、その目的は、高度な寸法精度が得られる
とともに、焼付等の発生を防止できる粉末合金軸
受の製造方法を提供することにある。[Object of the Invention] The present invention has been made based on the above circumstances, and its purpose is to provide a method for manufacturing a powder alloy bearing that can obtain a high degree of dimensional accuracy and prevent the occurrence of seizures, etc. It is in.

［発明の概要］ 以上の目的を達成するために、本発明では、粉
末合金に成型加工を施した後に焼結して筒状の軸
受本体を形成する工程と、上記軸受本体の両端内
周縁部に圧潰加工を施して上記軸受本体の内周面
両端部に内側に向け突出する環状の突出部をそれ
ぞれ形成する工程と、上記各突出部の内面に仕上
げ加工を施して支持する回転軸の外径に合つた軸
受支持面を形成する工程とを経て製造するように
している。[Summary of the Invention] In order to achieve the above object, the present invention includes a step of forming a powder alloy and then sintering it to form a cylindrical bearing body, and forming a cylindrical bearing body at both ends of the inner peripheral edge of the bearing body. a process of crushing the bearing body to form annular protrusions that protrude inward on both ends of the inner circumferential surface of the bearing body, and finishing the inner surface of each of the protrusions to form an outer surface of the rotating shaft to be supported. The bearing is manufactured through a process of forming a bearing support surface that matches the diameter.

このようにして製造された軸受は、各突出部の
内面に形成された軸受支持面だけで回転軸を支持
することになる。つまり、軸受本体の内周面全体
を高精度に仕上げ加工する必要はない。したがつ
て、仕上げ加工を施していない部分から潤滑油の
しみ出しが順調に行われ、粉末合金で軸受を形成
したことによる利点を最大限に発揮させることが
できる。また、軸受本体の両端内周縁部に圧潰加
工を施して上記軸受本体の内周面両端部に内側に
向け突出する環状の突出部をそれぞれ形成し、こ
れら突出部の内面に仕上げ加工を施して軸受支持
面を形成する方法を採用しているので、成型加工
時には単に筒状の軸受本体を形成すればよく、成
型加工の容易化を図れるばかりか、突出部の形成
に必要な力も小さくてよく、製造工程を大幅に簡
略化できる。 The bearing manufactured in this way supports the rotating shaft only by the bearing support surface formed on the inner surface of each protrusion. In other words, it is not necessary to finish the entire inner circumferential surface of the bearing body with high precision. Therefore, the lubricating oil oozes smoothly from the unfinished portions, and the advantages of forming the bearing from a powder alloy can be maximized. Further, the inner circumferential edges at both ends of the bearing body are crushed to form annular protrusions that protrude inward at both ends of the inner circumferential surface of the bearing body, and the inner surfaces of these protrusions are finished. Since we adopt a method of forming the bearing support surface, we only need to form a cylindrical bearing body during the molding process, which not only simplifies the molding process, but also requires less force to form the protrusion. , the manufacturing process can be greatly simplified.

［発明の実施例］ まず、本発明の一実施例を第１図ないし第３図
を参照して説明する。[Embodiment of the Invention] First, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

第１図ないし第３図は粉末合金軸受１の製造方
法を工程順に示すもので、まず第１図は粉末合金
の成型により形成された筒状体２である。この筒
状体２は、内径D1が回転軸３の外径ｄより大き
く形成され、回転軸３の外周面と筒状体１の内周
面との間に10〜100μm程度の間隙δが生じるよう
にしている。 1 to 3 show a method for manufacturing a powder alloy bearing 1 in the order of steps. First, FIG. 1 shows a cylindrical body 2 formed by molding a powder alloy. This cylindrical body 2 has an inner diameter D1 larger than an outer diameter d of the rotating shaft 3, and a gap δ of about 10 to 100 μm between the outer circumferential surface of the rotating shaft 3 and the inner circumferential surface of the cylindrical body 1. I'm trying to make it happen.

次にプレス装置等を用い、上記筒状体２の両端
内周縁部に軸方向の押圧力を加えて第２図ａ，ｂ
の如く筒状体２の内周面両端部を圧潰し、この内
周面両端部に環状突出部４ａ，４ｂを形成する。
この突出部４ａ，４ｂの内径D2は回転軸３の外
径ｄよりも小さく形成されるものである。 Next, using a press device or the like, an axial pressing force is applied to the inner circumferential edges of both ends of the cylindrical body 2, as shown in FIGS. 2a and b.
Both ends of the inner peripheral surface of the cylindrical body 2 are crushed to form annular protrusions 4a and 4b at both ends of the inner peripheral surface.
The inner diameter D 2 of the protrusions 4 a and 4 b is smaller than the outer diameter d of the rotating shaft 3 .

その後、リーマ等による二次加工により、さら
に必要に応じて鏡面仕上げを行なうことにより、
上記環状突出部４ａ，４ｂの内径を回転軸３の外
径ｄに合せて仕上げ、これによつて第３図のよう
な粉末合金軸受１が完成する。なお、図中５ａ，
５ｂは突出部３ａ，３ｂ内周部に形成された環状
仕上げ面である。 After that, by performing secondary processing using a reamer, etc., and mirror finishing as necessary,
The inner diameters of the annular protrusions 4a and 4b are finished to match the outer diameter d of the rotating shaft 3, thereby completing the powder alloy bearing 1 as shown in FIG. 3. In addition, 5a,
Reference numeral 5b denotes an annular finished surface formed on the inner periphery of the protrusions 3a and 3b.

以上のようにして製造された粉末合金軸受１
は、回転軸３の外周面を支持する突出部４ａ，４
ｂ内周面では仕上げ加工によつて高度な寸法精度
が得られ、しかもその突出部４ａ，４ｂ以外の内
周面は二次加工が施されていないので、軸受内部
に含浸された潤滑油の浸み出し効果が損われてし
まうおそれはなく、回転軸３との間における焼付
等の発生を確実に防止できる。 Powder alloy bearing 1 manufactured as above
are protrusions 4a, 4 that support the outer circumferential surface of the rotating shaft 3.
A high level of dimensional accuracy is achieved on the inner circumferential surface by finishing machining, and no secondary machining is performed on the inner circumferential surface other than the protruding parts 4a and 4b, so that the lubricating oil impregnated inside the bearing is There is no risk that the seepage effect will be impaired, and occurrence of seizure or the like between the rotating shaft 3 and the like can be reliably prevented.

また、筒状体２の両端内周縁部に圧潰加工を施
して筒状体２の内周面両端部に内側に向け突出す
る環状の突出部４ａ，４ｂをそれぞれ形成し、こ
れら突出部４ａ，４ｂの内面に仕上げ加工を施し
て軸受支持面を形成する方法を採用しているの
で、成型加工時には単に筒状の筒状体２を形成す
ればよく、成型加工の容易化を図れるばかりか、
突出部４ａ，４ｂの形成に必要な力も小さくてよ
く、製造工程を大幅に簡略化できる。 Further, the inner circumferential edges at both ends of the cylindrical body 2 are crushed to form annular protrusions 4a and 4b that protrude inward at both ends of the inner circumferential surface of the cylindrical body 2, and these protrusions 4a, Since a method is adopted in which the inner surface of the bearing 4b is finished to form a bearing support surface, it is sufficient to simply form the cylindrical body 2 during the molding process, which not only simplifies the molding process, but also
The force required to form the protrusions 4a, 4b may also be small, and the manufacturing process can be greatly simplified.

［発明の効果］ 以上のように、本発明に係る製造方法によれ
ば、成型工程の容易化ならびに加工工程の容易化
を図れると同時に粉末合金の特徴を最大限に発揮
させ得る粉末合金軸受の製造方法を提供できる。[Effects of the Invention] As described above, according to the manufacturing method of the present invention, it is possible to manufacture a powder alloy bearing that can facilitate the molding process and the processing process, and at the same time maximize the characteristics of the powder alloy. We can provide manufacturing methods.

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

第１図から第３図は本発明に係る製造方法を工
程順に示す図である。 １……粉末合金軸受、２……筒状体、３……回
転軸、４ａ，４ｂ……環状突出部、５ａ，５ｂ…
…環状仕上げ面。 FIGS. 1 to 3 are diagrams showing the manufacturing method according to the present invention in order of steps. DESCRIPTION OF SYMBOLS 1... Powder alloy bearing, 2... Cylindrical body, 3... Rotating shaft, 4a, 4b... Annular protrusion, 5a, 5b...
...Annular finished surface.

Claims (1)

【特許請求の範囲】[Claims] １ 粉末合金に成型加工を施した後に焼結して筒
状の軸受本体を形成する工程と、上記軸受本体の
両端内周縁部に圧潰加工を施して上記軸受本体の
内周面両端部に内側に向け突出する環状の突出部
をそれぞれ形成する工程と、上記各突出部の内面
に仕上げ加工を施して支持する回転軸の外径に合
つた軸受支持面を形成する工程とを具備してなる
ことを特徴とする粉末合金軸受の製造方法。1. A process of forming a powder alloy and sintering it to form a cylindrical bearing body, and crushing the inner circumferential edges of both ends of the bearing body to form inner edges on both ends of the inner circumferential surface of the bearing body. the process of forming annular protrusions that protrude toward the target; and finishing the inner surface of each of the protrusions to form a bearing support surface that matches the outer diameter of the rotating shaft to be supported. A method for manufacturing a powder alloy bearing, characterized in that:
JP59085653A 1984-04-27 1984-04-27 Powder alloy bearing and its production Granted JPS60230905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59085653A JPS60230905A (en) 1984-04-27 1984-04-27 Powder alloy bearing and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59085653A JPS60230905A (en) 1984-04-27 1984-04-27 Powder alloy bearing and its production

Publications (2)

Publication Number Publication Date
JPS60230905A JPS60230905A (en) 1985-11-16
JPH0121203B2 true JPH0121203B2 (en) 1989-04-20

Family

ID=13864783

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59085653A Granted JPS60230905A (en) 1984-04-27 1984-04-27 Powder alloy bearing and its production

Country Status (1)

Country Link
JP (1) JPS60230905A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6430923A (en) * 1987-07-23 1989-02-01 Mitsubishi Metal Corp Sintered oil-contained bearing
JPH03107612A (en) * 1989-09-20 1991-05-08 Sankyo Seiki Mfg Co Ltd Oil-impregnated sintered bearing
JPH0395812U (en) * 1990-01-23 1991-09-30
DE4225398A1 (en) * 1992-07-29 1994-02-03 Thale Eisen Huettenwerk Mfr. of powder-metallurgical self-lubricating bearings - comprising a calibration process applied after sintering
US5572078A (en) * 1994-09-20 1996-11-05 Sankyo Seiki Mfg. Co., Ltd. Spindle motor
JP2009085234A (en) * 2007-09-27 2009-04-23 Ntn Corp Plain bearing and method for manufacturing same
JP2010060099A (en) * 2008-09-05 2010-03-18 Ntn Corp Slide bearing and manufacturing method for the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57154518A (en) * 1981-10-12 1982-09-24 Hitachi Ltd Method of manufacturing bearing for electric enclosed compressor
JPS5894628A (en) * 1981-11-30 1983-06-04 Mitsubishi Metal Corp Sintered oil-containing bearing and manufacture of the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57154518A (en) * 1981-10-12 1982-09-24 Hitachi Ltd Method of manufacturing bearing for electric enclosed compressor
JPS5894628A (en) * 1981-11-30 1983-06-04 Mitsubishi Metal Corp Sintered oil-containing bearing and manufacture of the same

Also Published As

Publication number Publication date
JPS60230905A (en) 1985-11-16

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