JPH0988963A - Manufacture of solid lubricating bearing - Google Patents
Manufacture of solid lubricating bearingInfo
- Publication number
- JPH0988963A JPH0988963A JP24756395A JP24756395A JPH0988963A JP H0988963 A JPH0988963 A JP H0988963A JP 24756395 A JP24756395 A JP 24756395A JP 24756395 A JP24756395 A JP 24756395A JP H0988963 A JPH0988963 A JP H0988963A
- Authority
- JP
- Japan
- Prior art keywords
- solid lubricant
- base material
- bearing base
- bearing
- hole
- 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.)
- Abandoned
Links
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の技術分野】本発明は、高負荷・無給油軸受の１
種である固体潤滑軸受の製造方法に関するものである。TECHNICAL FIELD OF THE INVENTION The present invention relates to a high load, oil-free bearing.
The present invention relates to a manufacturing method of a solid lubrication bearing which is a kind.
【０００２】[0002]
【従来の技術】高負荷・無給油タイプの軸受の例とし
て、射出成形用金型のガイドブッシュを挙げることがで
きるが、このような軸受の潤滑は特殊な固体潤滑剤を用
い、軸と軸受との間のすき間に潤滑被膜を形成して摩擦
力を低減させるもので、いわゆる固体潤滑式に属するも
のである。2. Description of the Related Art An example of a high load, oil-free type bearing is a guide bush of an injection molding die. Lubrication of such a bearing uses a special solid lubricant to form a shaft and a bearing. It forms a lubricating film in the gap between the and to reduce the frictional force, and belongs to the so-called solid lubrication type.
【０００３】図２は、固体潤滑式軸受の例を示すもの
で、高力黄銅製のブッシュ１１に径方向に多数の***１
１ａを穿設し、これらの各小孔にカーボン等からなる固
体潤滑剤１２を埋設して、加熱焼成して固化したもので
ある。このようなブッシュ１１の軸孔Ｈ２に軸１３を嵌
入し、この軸とブッシュとの間で相対的な運動をさせる
と、軸孔と軸との間のすき間１４には，潤滑剤が介在し
て両者間の摩擦抵抗を低減させるようにしてある。FIG. 2 shows an example of a solid lubrication type bearing. A bush 11 made of high-strength brass is provided with a large number of small holes 1 in the radial direction.
1a is bored, a solid lubricant 12 made of carbon or the like is embedded in each of these small holes, and heated and baked to be solidified. When the shaft 13 is inserted into the shaft hole H2 of the bush 11 and the shaft and the bush are relatively moved, a lubricant is present in the clearance 14 between the shaft hole and the shaft. The frictional resistance between the two is reduced.
【０００４】上記した固体潤滑軸受の製造は図３に示す
ような要領で行われる。まず、高力黄銅等の金属母材１
１に、粗加工によって下穴Ｈ１を穿つ（図３（ａ））。
このとき、下穴の内面には凹凸が生じているので、次に
精密加工（仕上げ加工）によって下穴Ｈ１の内面を平滑
に仕上げて軸穴Ｈ２とする（図３（ｂ））。次に金属母
材１１の外周部から軸心に向け、軸穴Ｈ１に達する多数
の埋込み用穴１１ａ…を設ける（図３（ｃ））。これら
の各埋込み用穴１１ａにはカーボンまたは二硫化モリブ
デンなどの固体潤滑剤１２を充填する（図３（ｄ））。
固体潤滑剤１２は樹脂バインダや溶剤などによって練り
状になっているので、母材金属に充填した後に所定温度
に加熱して固化される。The above-mentioned solid lubricating bearing is manufactured in the manner shown in FIG. First, metal base material 1 such as high strength brass
A rough hole H1 is drilled in No. 1 (FIG. 3A).
At this time, since the inner surface of the prepared hole has irregularities, the inner surface of the prepared hole H1 is smoothed by precision processing (finishing) to form the shaft hole H2 (FIG. 3B). Next, a large number of embedding holes 11a ... Which reach the shaft hole H1 are provided from the outer peripheral portion of the metal base material 11 toward the shaft center (FIG. 3C). Each of the embedding holes 11a is filled with a solid lubricant 12 such as carbon or molybdenum disulfide (FIG. 3D).
Since the solid lubricant 12 is kneaded with a resin binder, a solvent, etc., it is solidified by heating it to a predetermined temperature after filling the base metal.
【０００５】[0005]
【発明が解決しようとする課題】従来技術による製造方
法では、多数の埋込み穴１１ａを穿設し、かつこれらの
各埋込み穴に固体潤滑剤を充填する手間がかかるため、
製造コストが高くなる問題がある。In the manufacturing method according to the prior art, it takes time and effort to form a large number of embedding holes 11a and to fill each of these embedding holes with a solid lubricant.
There is a problem that the manufacturing cost becomes high.
【０００６】また前記した金型のガイドブッシュのよう
に高負荷が働くものでは、金属母材として高価な高力黄
銅材を用いなければならず、これもまた製造コストを招
く要因となっている。Further, in the case where a high load acts like the guide bush of the mold, an expensive high-strength brass material must be used as a metal base material, which also causes a manufacturing cost. .
【０００７】そこで本発明の目的は、強度的に秀れた固
定潤滑軸受を安価に製造することにある。Therefore, an object of the present invention is to inexpensively manufacture a fixed lubrication bearing excellent in strength.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、軸受母材に軸穴用の下穴をあけ、この
下穴の内周面に軸穴の径の外方に底部が位置するように
加工してなる複数の凹部を設け、下穴の内周面にペース
ト状に混練してなる固体潤滑剤を塗布することによって
この固体潤滑剤を各凹部に充填し、軸受母材を所定温度
に加熱して凹部に充填された固体潤滑剤を焼成し、下穴
の内周面を各凹部の底部から所定の深さまで切削加工
し、軸穴の内周面に残された各凹部に固体潤滑剤を残留
させてなる軸穴を得るところに特徴がある。In order to achieve the above object, the present invention provides a bearing base material with a prepared hole for a shaft hole, and an inner peripheral surface of the prepared hole has an outer diameter of the shaft hole. Provide a plurality of recesses formed by processing so that the bottom portion is located, by filling the solid lubricant formed by kneading in paste form on the inner peripheral surface of the prepared hole into each recess, The bearing base material is heated to a predetermined temperature to burn the solid lubricant filled in the recesses, and the inner peripheral surface of the pilot hole is cut from the bottom of each recess to a predetermined depth and left on the inner peripheral surface of the shaft hole. The feature is that a shaft hole is obtained by leaving a solid lubricant in each of the recesses formed.
【０００９】好ましくは、軸受母材としては普通黄銅材
が用いられ、焼成のための加熱温度は１９０〜２００℃
に定められる。これにより焼成と同時に低温焼鈍が行な
われ、軸受母材の強度を高力黄銅に匹敵するものにでき
る。Preferably, a brass material is usually used as the bearing base material, and the heating temperature for firing is 190 to 200 ° C.
Stipulated in. As a result, low temperature annealing is performed at the same time as firing, and the strength of the bearing base material can be made comparable to that of high strength brass.
【００１０】[0010]
【発明の実施の形態】初めに黄銅丸棒を機械加工して軸
受母材１を作る。軸受母材の素材としては、四六黄銅
（ＪＩＳＨ３２５０，Ｃ２８００系）の引抜き棒とし、
両端を切削して所定の長さに切り出し、両端を面取りす
る。次にドリル等の穴あけ手段によって下穴１ａをあけ
る。下穴の径は、次の工程で加工する雌ねじの内径に等
しくする。例えば日本工業規格（ＪＩＳ）に定めるＭ１
０のメートルねじを採用するとするならば、内径を約
８．４ｍｍにすればよい。BEST MODE FOR CARRYING OUT THE INVENTION First, a brass base rod is machined to form a bearing base material 1. As the material of the bearing base material, a drawing rod made of 46 brass (JIS H3250, C2800 series),
Both ends are cut and cut into a predetermined length, and both ends are chamfered. Next, the prepared hole 1a is drilled by a drilling means such as a drill. The diameter of the prepared hole is made equal to the inner diameter of the internal thread that will be processed in the next step. For example, M1 specified in Japanese Industrial Standard (JIS)
If 0 metric threads are used, the inner diameter should be about 8.4 mm.
【００１１】次にタップ立て専用機を用いて、軸受母材
１に穿設した下穴１ａの内周面に凹部となるべき雌ねじ
部２を切る（図１（ａ）参照）。因みにＭ１０のメート
ルねじのタップを立てたときの谷の径は１０ｍｍで内径
は約８．４ｍｍであるので、このときのねじ山の高さは
約０．８ｍｍとなる。Then, a tapping machine is used to cut a female screw portion 2 to be a concave portion on the inner peripheral surface of the prepared hole 1a formed in the bearing base material 1 (see FIG. 1 (a)). Incidentally, when the tap of the M10 metric screw is set up, the diameter of the valley is 10 mm and the inner diameter is about 8.4 mm, so the height of the thread at this time is about 0.8 mm.
【００１２】次に、この雌ねじ部２に固形潤滑剤３を塗
布し、雌ねじ部の谷の部分を埋め尽す程度に充填する。
（図１（ｂ）参照）。固体潤滑剤３は、潤滑剤であるカ
ーボン粉末とウレタンまたはエポキシなどの樹脂バイン
ダとを混合し、溶剤（シンナー）でペースト状にしたも
のを用いる。潤滑剤としてはカーボン粉末の他二硫化モ
リブデンを用いてもよい。Next, the solid lubricant 3 is applied to the female screw portion 2 and is filled to such an extent that the valley portion of the female screw portion is completely filled.
(See FIG. 1 (b)). As the solid lubricant 3, used is one in which carbon powder as a lubricant and a resin binder such as urethane or epoxy are mixed and made into a paste with a solvent (thinner). As the lubricant, molybdenum disulfide other than carbon powder may be used.
【００１３】固定潤滑剤の塗布の例としては、例えばコ
ンベア上を移動する軸受母材１に対して径方向に固体潤
滑剤を噴出させるスプレーガンを雌ねじ部２内に出し入
れすることによって行う。As an example of application of the fixed lubricant, for example, a spray gun for ejecting the solid lubricant in the radial direction with respect to the bearing base material 1 moving on the conveyor is put into and taken out from the female screw portion 2.
【００１４】次に下穴の内周面に固体潤滑剤３を塗布し
た軸受母材１を加熱炉（図示せず）内に入れ、所定温度
（１９０〜２００℃）で加熱して固体潤滑剤３を焼成す
る。焼成時間は軸受母材の大きさによって異なるが、３
０分〜１時間程度である。この焼成により固体潤滑剤３
は文字通り固体化する。Next, the bearing base material 1 coated with the solid lubricant 3 on the inner peripheral surface of the prepared hole is placed in a heating furnace (not shown) and heated at a predetermined temperature (190 to 200 ° C.) to obtain the solid lubricant. Bake 3. The firing time varies depending on the size of the bearing base material, but is 3
It is about 0 minute to 1 hour. By this firing, the solid lubricant 3
Literally solidifies.
【００１５】次に雌ねじ部２の内面を切削加工して、雌
ねじ部の山の高さのほぼ半分の高さまで削り取る（図１
（ｃ）参照）。雌ねじ部２の切削には中ぐり盤を用い、
所定の内径になるように精密に切削する。この切削加工
により、内径ｄの軸穴４が得られる。内径ｄは、雌ねじ
部の谷径よりも小さくしてあるので、軸穴４の内周面に
は、雌ねじ部の底部から所定の高さの部分からなる凹部
２ａが残された状態となる。因みに内径ｄを８．４ｍｍ
とすると、凹部２ａの高さは、谷の径が１０ｍｍの場合
０．８ｍｍとなる。このとき雌ねじ部２の内面に付着し
ている固体潤滑剤３も同時に削り取られるので、凹部２
ａ内にのみ三角形状のらせん部３ａとなって残留する。Next, the inner surface of the female screw portion 2 is subjected to a cutting process so that the height is approximately half the height of the crest of the female screw portion (FIG. 1).
(C)). A boring machine is used to cut the female thread 2.
Precisely cut to the specified inner diameter. By this cutting process, the shaft hole 4 having the inner diameter d is obtained. Since the inner diameter d is smaller than the root diameter of the female threaded portion, the inner peripheral surface of the shaft hole 4 is in a state in which a concave portion 2a having a portion of a predetermined height from the bottom of the female threaded portion is left. By the way, the inner diameter d is 8.4 mm
Then, the height of the recess 2a is 0.8 mm when the diameter of the valley is 10 mm. At this time, the solid lubricant 3 adhering to the inner surface of the female screw portion 2 is also scraped off at the same time.
The triangular spiral portion 3a remains only in a.
【００１６】この説明においては、凹部２ａを設けるた
めの雌ねじ部２をメートルねじ用タップによって形成し
てあるが、メートルねじのねじ山の角は６０°である
が、これをインチねじにすると、幅狭で谷部が深い５５
°のらせん状の凹部が得られる。また軸受が量産品であ
る場合には、雌ねじ部を切るためのタップを特別注文に
よって所望の凹部とすることも可能である．なお、凹部
の形成には、雌ねじ部を切削した後に中ぐり加工するこ
とに限定する趣旨ではなく、中ぐりバイトその他の加工
手段による内面加工によって形成してもよい。In this description, the female screw portion 2 for forming the recess 2a is formed by a metric thread tap. The angle of the thread ridge of the metric thread is 60 °. 55 with a narrow and deep valley
A helical depression of ° is obtained. If the bearing is a mass-produced product, the tap for cutting the internal thread can be made into a desired recess by custom order. It should be noted that the formation of the recess is not limited to the boring process after cutting the female screw part, and may be formed by the inner surface process using a boring tool or other processing means.
【００１７】なお、固体潤滑剤の焼成温度を前記したよ
うに、１９０〜２００℃とすると、この温度は四六黄銅
材の低温焼鈍温度に該当するため、軸受母材である黄銅
材は、固体潤滑材の焼成と並行して低温焼鈍され、表１
に示すように機械的強度および硬度が向上する。As described above, when the firing temperature of the solid lubricant is 190 to 200 ° C., this temperature corresponds to the low-temperature annealing temperature of the 46-brass brass material. Therefore, the brass material as the bearing base material is solid. Low temperature annealing was carried out in parallel with the firing of the lubricant.
As shown in, the mechanical strength and hardness are improved.
【００１８】[0018]
【表１】 [Table 1]
【００１９】表１は、固体潤滑剤の焼成のための加熱に
よって、軸受母材の機械的性質の変化を高力黄銅と比較
して示している。表１に示してあるように、安価な四六
黄銅を用いても、本発明による処理を行うことにより、
高価な高力黄銅に匹敵する機械的強度および硬度が得ら
れる。したがって、普通黄銅製であっても金型装置のガ
イドブッシュなど高負荷の軸受として採用可能になる。Table 1 shows the change in mechanical properties of the bearing base material due to heating for firing the solid lubricant, as compared with high strength brass. As shown in Table 1, even by using an inexpensive copper brass, by performing the treatment according to the present invention,
Provides mechanical strength and hardness comparable to expensive high strength brass. Therefore, even if it is normally made of brass, it can be used as a bearing of high load such as a guide bush of a mold device.
【００２０】なお、軸受母材の材質は、四六黄銅に限ら
ず、負荷の程度に対応してその他の黄銅や軸受合金とし
てもよい。The material of the bearing base material is not limited to 46 brass, but other brass or bearing alloy may be used depending on the degree of load.
【００２１】[0021]
【発明の効果】本発明は、従来技術のように、固体潤滑
剤埋込み用の***を設ける必要がなく、下穴の内側から
凹部を形成するだけでよいので、工程が著しく短縮さ
れ、製造コストを低減することができる。According to the present invention, unlike the prior art, it is not necessary to provide a small hole for embedding a solid lubricant, and it is only necessary to form a recess from the inside of the prepared hole, so that the process is remarkably shortened and the manufacturing cost Can be reduced.
【００２２】また安価な普通黄銅材を用い、固体潤滑剤
の焼成温度を１９０〜２００℃とすると、低温焼鈍によ
る材質改善が行われ、軸受け母材の機械的強度が大きく
なる。この低温焼鈍は固体潤滑剤の焼成と並行して熱処
理が行われるようにしてあるので、特別な熱処理を要す
ることなくかつ高価な高力黄銅を使うことなく製造する
ことが可能となるので、高負荷用の固体潤滑軸受の製造
コストを低減することができる。If an inexpensive ordinary brass material is used and the solid lubricant is fired at a temperature of 190 to 200 ° C., the material is improved by low-temperature annealing, and the mechanical strength of the bearing base material is increased. Since this low-temperature annealing is performed in parallel with the firing of the solid lubricant, it is possible to manufacture without requiring special heat treatment and expensive high-strength brass. The manufacturing cost of the solid lubricating bearing for load can be reduced.
【図１】本発明の工程を説明する断面図である。FIG. 1 is a cross-sectional view illustrating a process of the present invention.
【図２】従来技術の構成を示す断面図である。FIG. 2 is a cross-sectional view showing a configuration of a conventional technique.
【図３】従来技術の工程を説明する断面図である。FIG. 3 is a cross-sectional view illustrating a process of a conventional technique.
１ 軸受母材 １ａ 下穴 ２，２ａ 凹部 ３，３ａ 固体潤滑剤 ４ 軸穴 1 Bearing base material 1a Prepared hole 2, 2a Recessed portion 3, 3a Solid lubricant 4 Shaft hole
Claims (2)
るように加工してなる複数の凹部を設け、 上記下穴の内周面にペースト状に混練してなる固体潤滑
剤を塗布することによってこの固体潤滑剤を各上記凹部
に充填し、 上記軸受母材を所定温度に加熱して上記凹部に充填され
た上記固体潤滑剤を焼成し、 上記下穴の内周面を各上記凹部の底部から所定の深さま
で切削加工し、上記軸穴の内周面に残された各上記凹部
に上記固体潤滑剤を残留させるてなる軸穴を得ることを
特徴とする固体潤滑軸受の製造方法。1. A bearing base material is provided with a pilot hole for a shaft hole, and a plurality of recesses are formed on the inner peripheral surface of the pilot hole so that the bottom portion is located outside the diameter of the shaft hole. The solid lubricant formed by kneading in paste form is applied to the inner peripheral surface of the prepared hole to fill each of the recesses with the solid lubricant, and the bearing base material is heated to a predetermined temperature to form the recess. The filled solid lubricant is fired, the inner peripheral surface of the pilot hole is machined from the bottom of each recess to a predetermined depth, and the solid is formed in each recess left on the inner peripheral surface of the shaft hole. A method of manufacturing a solid lubrication bearing, characterized in that a shaft hole formed by leaving a lubricant is obtained.
普通黄銅材を用い、上記焼成のための加熱温度を１９０
〜２００℃とすることを特徴とする固体潤滑軸受の製造
方法。2. The heating temperature for firing according to claim 1, wherein an ordinary brass material is used as the bearing base material.
To 200 ° C, a method for producing a solid lubrication bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24756395A JPH0988963A (en) | 1995-09-26 | 1995-09-26 | Manufacture of solid lubricating bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24756395A JPH0988963A (en) | 1995-09-26 | 1995-09-26 | Manufacture of solid lubricating bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0988963A true JPH0988963A (en) | 1997-03-31 |
Family
ID=17165362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24756395A Abandoned JPH0988963A (en) | 1995-09-26 | 1995-09-26 | Manufacture of solid lubricating bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0988963A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007081109A (en) * | 2005-09-14 | 2007-03-29 | Jtekt Corp | Guide roller device, and its manufacturing method |
| CN111795074A (en) * | 2020-06-29 | 2020-10-20 | 华亿轴承科技（江苏）有限公司 | HYB-650 copper-based inlaid solid lubricating bearing and manufacturing process thereof |
-
1995
- 1995-09-26 JP JP24756395A patent/JPH0988963A/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007081109A (en) * | 2005-09-14 | 2007-03-29 | Jtekt Corp | Guide roller device, and its manufacturing method |
| JP4517991B2 (en) * | 2005-09-14 | 2010-08-04 | 株式会社ジェイテクト | Guide roller device and guide roller device manufacturing method |
| CN111795074A (en) * | 2020-06-29 | 2020-10-20 | 华亿轴承科技（江苏）有限公司 | HYB-650 copper-based inlaid solid lubricating bearing and manufacturing process thereof |
| CN111795074B (en) * | 2020-06-29 | 2021-11-23 | 华亿轴承科技（江苏）有限公司 | HYB-650 copper-based inlaid solid lubricating bearing and manufacturing process thereof |
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