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JPS6142126B2 - - Google Patents

Info

Publication number
JPS6142126B2
JPS6142126B2 JP19190981A JP19190981A JPS6142126B2 JP S6142126 B2 JPS6142126 B2 JP S6142126B2 JP 19190981 A JP19190981 A JP 19190981A JP 19190981 A JP19190981 A JP 19190981A JP S6142126 B2 JPS6142126 B2 JP S6142126B2
Authority
JP
Japan
Prior art keywords
axial direction
bearing
sintered body
sintered
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.)
Expired
Application number
JP19190981A
Other languages
Japanese (ja)
Other versions
JPS5894628A (en
Inventor
Hiroshi Nishe
Tetsuo Sekimoto
Tsuneo Maruyama
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.)
Mitsubishi Metal Corp
Original Assignee
Mitsubishi Metal Corp
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 Mitsubishi Metal Corp filed Critical Mitsubishi Metal Corp
Priority to JP56191909A priority Critical patent/JPS5894628A/en
Publication of JPS5894628A publication Critical patent/JPS5894628A/en
Publication of JPS6142126B2 publication Critical patent/JPS6142126B2/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
    • 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
    • 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
    • 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
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Sliding-Contact Bearings (AREA)
  • Forging (AREA)
  • Powder Metallurgy (AREA)

Description

【発明の詳細な説明】 「産業上の利用分野」 この発明は、内径が軸心方向の互いに離れた２
ケ所以上で大きくなされた焼結含油軸受の製造方
法に関するものである。Detailed Description of the Invention "Field of Industrial Application" This invention provides two
The present invention relates to a method of manufacturing a sintered oil-impregnated bearing which is made larger in number than the above points.

「従来の技術」 一般に、従来の焼結含油軸受は、その内径が全
長に瓦つて一様になつているが、軸受の長さが長
い場合、たとえば軸受長さが30mmを超えるような
場合には、穴に曲がりが発生し、このためシヤフ
トのかじり等の問題を招来していた。"Conventional technology" In general, conventional sintered oil-impregnated bearings have an inner diameter that is uniform over the entire length. In this case, the hole was bent, which caused problems such as shaft galling.

そこで、この出願の出願人は、第１図ａ，ｂに
それぞれ示す焼結含油軸受８１，８２を開発し
た。軸受８１，８２は軸受孔９１，９２の軸心方
向の互いに離れた複数個所（この場合２個所）に
リング状の逃げ１０１，１０２をそれぞれ設けた
ものであり、したがつてこれら軸受８１，８２に
おいては、軸受孔９１，９２の互いに離れた複数
個所の軸受内径が他の部分の内径よりも大きくな
つている。なお、軸受８１には、逃げ１０１に対
応する外周部分にリング状の溝１１が形成されて
いる。 Therefore, the applicant of this application has developed sintered oil-impregnated bearings 81 and 82 shown in FIGS. 1a and 1b, respectively. The bearings 81 and 82 are provided with ring-shaped reliefs 101 and 102 at a plurality of locations (two locations in this case) spaced apart from each other in the axial direction of the bearing holes 91 and 92, respectively. In the bearing holes 91 and 92, the inner diameters of the bearings at a plurality of locations separated from each other are larger than the inner diameters of other portions. Note that a ring-shaped groove 11 is formed in the outer peripheral portion of the bearing 81 corresponding to the relief 101.

そして、軸受孔９１，９２の互いに離れた複数
個所の軸受内径が他の部分の内径よりも大きくな
された軸受８１，８２によれば、そのメカニズム
は定かでないが、軸受孔９１，９２の曲がりを防
止することができる。 According to the bearings 81 and 82 in which the inner diameters of the bearing holes 91 and 92 are made larger than the inner diameters of the other parts, the bending of the bearing holes 91 and 92 is not clear. It can be prevented.

「発明が解決しようとする問題点」 ところが、上記の軸受８１，８２を製造する場
合には、逃げ１０１，１０２の形成が困難である
という問題があつた。すなわち、逃げ１０１，１
０２を形成するには、旋削加工あるいは研削加工
による方法が考えられる。ところが、焼結含油軸
受は一般にその内径が非常に小さくなつている。
このため、刃物もしくは砥石が取り付けられる軸
の剛性が低くなり、加工が非常に困難であり、ま
た仮に、それらの方法で加工することができたと
しても、加工速度を速めることが困難であるとい
う問題があつた。"Problems to be Solved by the Invention" However, when manufacturing the above bearings 81 and 82, there was a problem in that it was difficult to form the reliefs 101 and 102. That is, escape 101,1
02 may be formed by turning or grinding. However, sintered oil-impregnated bearings generally have a very small inner diameter.
For this reason, the rigidity of the shaft to which the blade or grindstone is attached becomes low, making machining extremely difficult, and even if machining could be done using these methods, it would be difficult to increase the machining speed. There was a problem.

「発明の目的」 この発明は、上記事情を考慮してなされたもの
で、軸受内径が軸心方向の互いに離れた２ケ所で
大きくなされた焼結含油軸受を容易に、かつ迅速
に製造することができる製造方法を提供すること
を目的とする。``Object of the Invention'' The present invention was made in consideration of the above circumstances, and an object thereof is to easily and quickly manufacture a sintered oil-impregnated bearing in which the inner diameter of the bearing is increased at two locations separated from each other in the axial direction. The purpose is to provide a manufacturing method that can.

「問題点を解決するための手段」 この発明は、前記問題点を解決するために、焼
結体を矯正するに際し、その焼結体として外周面
に２本以上の溝を有するものを用いるようにした
ものである。"Means for Solving the Problems" In order to solve the above-mentioned problems, the present invention provides a method for straightening a sintered body by using a sintered body having two or more grooves on its outer peripheral surface. This is what I did.

「作用」 溝を有する焼結体をその軸心方向に加圧圧縮す
ると、溝が形成された部分が径方向外方に向かう
ように変形し、その結果溝に対応する内周部分が
径方向外方に向つて膨出し、これによつて軸受内
径が軸心方向の互いに離れた２ケ所以上で大きく
なる。"Operation" When a sintered body with grooves is compressed under pressure in its axial direction, the part where the grooves are formed deforms radially outward, and as a result, the inner peripheral part corresponding to the grooves deforms in the radial direction. The bearing bulges outward, thereby increasing the inner diameter of the bearing at two or more locations spaced apart from each other in the axial direction.

「実施例」 以下、この発明の実施例について第２図および
第３図を参照して説明する。"Example" Hereinafter, an example of the present invention will be described with reference to FIGS. 2 and 3.

焼結含油軸受は、通常、圧粉工程、焼結工程お
よび焼結後の再加圧工程を経て製造されるが、こ
の方法で用いる焼結工程後における焼結体１２と
して、第２図に示すように、軸心方向中央部（逃
げ１０１，１０２を設ける個所に対応する部分）
の外周面にリング状の溝１１ａ，１１ｂ，１１ｃ
を有するものを形成しておく。これらの溝１１
ａ，１１ｂ，１１ｃについては、切削加工によつ
て形成することもできるし、圧粉時に用いるダイ
の形状を変えることによつても形成することがで
きる。いずれの方法を採用するにしても、外周面
に形成するものであるから、その加工を容易に行
うことができる。なお、これらの溝１１ａ，１１
ｂ，１１ｃの大きさ、形状、形成数などについて
は、軸受孔９１，９２の逃げ１０１，１０２の大
きさなどによつて適宜選択できる。例えば、第２
図ａに示す溝１１ａは、それを画成する壁面を断
面コ字状にしたものであり、また第２図ｂに示す
溝１１ｂは、その壁面を円弧状にしたものであ
り、さらに第２図ｃに示す溝１１ｃは、その底面
を焼結体１２の外側へ向つて膨出する円弧状にし
たものである。 Sintered oil-impregnated bearings are normally manufactured through a powder compaction process, a sintering process, and a repressing process after sintering. As shown, the central part in the axial direction (the part corresponding to the place where the reliefs 101 and 102 are provided)
Ring-shaped grooves 11a, 11b, 11c are formed on the outer peripheral surface of
Form one with . These grooves 11
A, 11b, and 11c can be formed by cutting or by changing the shape of the die used during powder compaction. Whichever method is adopted, since it is formed on the outer peripheral surface, the processing can be easily performed. Note that these grooves 11a, 11
The size, shape, number, etc. of b, 11c can be appropriately selected depending on the size of the reliefs 101, 102 of the bearing holes 91, 92, etc. For example, the second
The groove 11a shown in FIG. The groove 11c shown in FIG.

そして、上記のような焼結体１２を、第３図に
示すように、ダイ１３、上パンチ１４、下パンチ
１５およびコアーロツド１６を用いて加圧圧縮す
る。すると、焼結体１２の外形部分および溝１１
ａ，１１ｂ，１１ｃに対応する肉の部分がダイ１
３の形状にならうようにして外側へ移動する。こ
の場合、溝に対応する肉部分の移動量が、それ以
外の部分の移動量より多い。この結果、軸受孔９
１，９２の溝１１ａ，１１ｂ，１１ｃに対応する
個所が外側へ向つて膨出することとなり、前述し
た第１図に示すような軸受８１，８２の形状が得
られる。 The sintered body 12 as described above is then compressed under pressure using a die 13, an upper punch 14, a lower punch 15, and a core rod 16, as shown in FIG. Then, the outer shape portion of the sintered body 12 and the groove 11
The meat parts corresponding to a, 11b, 11c are die 1
Move outward following the shape of 3. In this case, the amount of movement of the meat portion corresponding to the groove is greater than the amount of movement of the other portions. As a result, the bearing hole 9
The portions corresponding to the grooves 11a, 11b, 11c of Nos. 1 and 92 bulge outward, and the shapes of the bearings 81 and 82 as shown in FIG. 1 described above are obtained.

「発明の効果」 以上説明したように、この発明の製造方法によ
れば、焼結体を矯正するに際し、その焼結体とし
て外周面に２本以上の溝を有するものを用いるよ
うにしているから、単に焼結体をその軸心方向に
加圧圧縮することにより、軸受内径を軸心方向の
互いに離れた２ケ所以上で大きくすることがで
き、したがつてそのような軸受の製造を容易に、
かつ迅速に行うことができる等の効果が得られ
る。"Effects of the Invention" As explained above, according to the manufacturing method of the present invention, when straightening a sintered body, a sintered body having two or more grooves on the outer peripheral surface is used. Therefore, by simply pressurizing and compressing the sintered body in the axial direction, the inner diameter of the bearing can be increased at two or more locations separated from each other in the axial direction, thus making it easy to manufacture such bearings. To,
Moreover, effects such as being able to be carried out quickly can be obtained.

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

第１図ａ，ｂはそれぞれこの発明の製造方法に
よつて製造すべき軸受一例を示す断面図、第２図
ａ，ｂ，ｃはそれぞれこの発明において用いる焼
結工程後における焼結体の一例を示す断面図、第
３図はこの発明での再加圧工程における加圧圧縮
状態を示す要部断面図である。 １１ａ，１１ｂ，１１ｃ……溝、１２……焼結
工程後における焼結体、１３……ダイ、１４……
上パンチ、１５……下パンチ、１６……コアーロ
ツド、８１，８２……この発明の製造方法によつ
て製造すべき焼結含油軸受、１０１，１０２……
逃げ。 Figures 1a and b are cross-sectional views showing an example of a bearing to be manufactured by the manufacturing method of the present invention, and Figures 2a, b, and c are examples of a sintered body after the sintering process used in the invention. FIG. 3 is a sectional view of a main part showing a pressurized and compressed state in the repressurizing step in the present invention. 11a, 11b, 11c...Groove, 12...Sintered body after the sintering process, 13...Die, 14...
Upper punch, 15... Lower punch, 16... Core rod, 81, 82... Sintered oil-impregnated bearing to be manufactured by the manufacturing method of the present invention, 101, 102...
escape.

Claims (1)

【特許請求の範囲】 １ 軸受内径が軸心方向の互いに離れた２ケ所以
上で大きい焼結含油軸受を、圧粉工程、焼結工程
および焼結後の再加圧工程を経て製造する場合、
前記焼結工程後における焼結体として、軸受の軸
心方向の外周面にリング状の２本以上の溝を有す
るものを形成し、その焼結体を前記再加圧工程に
おいて軸心方向加圧圧縮することを特徴とする焼
結含油軸受の製造方法。 ２ 前記再加圧工程において、軸心方向の断面形
状が一様なコアーロツドおよびダイを用いること
を特徴とする特許請求の範囲第１項に記載の焼結
含油軸受の製造方法。[Scope of Claims] 1. When a sintered oil-impregnated bearing having a large inner diameter at two or more locations apart from each other in the axial direction is manufactured through a powder compaction process, a sintering process, and a repressing process after sintering,
After the sintering process, a sintered body having two or more ring-shaped grooves is formed on the outer peripheral surface of the bearing in the axial direction, and the sintered body is axially pressed in the repressing process. A method for manufacturing a sintered oil-impregnated bearing characterized by compression. 2. The method for manufacturing a sintered oil-impregnated bearing according to claim 1, wherein in the repressurizing step, a core rod and die having a uniform cross-sectional shape in the axial direction are used.
JP56191909A 1981-11-30 1981-11-30 Manufacturing method for sintered oil-impregnated bearings Granted JPS5894628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56191909A JPS5894628A (en) 1981-11-30 1981-11-30 Manufacturing method for sintered oil-impregnated bearings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56191909A JPS5894628A (en) 1981-11-30 1981-11-30 Manufacturing method for sintered oil-impregnated bearings

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP1445086A Division JPS61165019A (en) 1986-01-25 1986-01-25 Sintered oil-impregnated bearing

Publications (2)

Publication Number Publication Date
JPS5894628A JPS5894628A (en) 1983-06-04
JPS6142126B2 true JPS6142126B2 (en) 1986-09-19

Family

ID=16282461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56191909A Granted JPS5894628A (en) 1981-11-30 1981-11-30 Manufacturing method for sintered oil-impregnated bearings

Country Status (1)

Country Link
JP (1) JPS5894628A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230905A (en) * 1984-04-27 1985-11-16 Tanashin Denki Co Powder alloy bearing and its production
JPS6426023A (en) * 1987-07-20 1989-01-27 Mitsubishi Metal Corp Manufacture of sintered oil-containing bearing
JP3475215B2 (en) * 1995-11-30 2003-12-08 日立粉末冶金株式会社 Composite porous bearing

Also Published As

Publication number Publication date
JPS5894628A (en) 1983-06-04

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