JP2605790B2 - Transmission synchronous ring made of Cu-based sintered alloy - Google Patents
Transmission synchronous ring made of Cu-based sintered alloyInfo
- Publication number
- JP2605790B2 JP2605790B2 JP63079781A JP7978188A JP2605790B2 JP 2605790 B2 JP2605790 B2 JP 2605790B2 JP 63079781 A JP63079781 A JP 63079781A JP 7978188 A JP7978188 A JP 7978188A JP 2605790 B2 JP2605790 B2 JP 2605790B2
- Authority
- JP
- Japan
- Prior art keywords
- based sintered
- sintered alloy
- synchronous ring
- transmission
- ring made
- 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 - Lifetime
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
- F16D23/025—Synchro rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Structure Of Transmissions (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、とくに相手部材との接触摺動面の初期な
じみ性にすぐれ、かつ耐摩擦耗性にもすぐれたCu系焼結
合金製変速機同期リングに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a transmission made of a Cu-based sintered alloy having excellent initial conformability of a sliding surface in contact with a mating member and excellent friction and wear resistance. This is related to the machine synchronization ring.
従来、一般に、変速機同期リングは、第１図に斜視図
で例示されるように、内面１が回転するテーパーコーン
との接触摺動面となり、この接触摺動面に相手部材たる
テーパーコーンが高面圧下で断続的に面接触し、一方外
周面にはキーが嵌合するキー溝３が形成され、さらに、
その外縁にそって所定間隔おきに設けたチャンファ２が
同じく相手部材たるハブスリーブのチャンファとかみ合
う機能をもつことから、強度、耐摩耗性、および相手部
材とのなじみ性を具備することが要求され、したがって
その製造には、これらの特性をもった高力黄銅が多用さ
れている。なお、変速機同期リングには、この他にネジ
が外周側につき、この外周側で相手部材であるテーパー
コーンと摩擦する、通称ピンタイプのものがある。Conventionally, in general, a transmission synchronization ring has a sliding surface in contact with a rotating taper cone as shown in a perspective view in FIG. 1, and a taper cone as a mating member is formed on the contact sliding surface. A key groove 3 into which a key is fitted is formed on the outer peripheral surface while intermittently making surface contact under a high surface pressure.
Since the chamfers 2 provided at predetermined intervals along the outer edge also have the function of engaging with the chamfer of the hub sleeve as the mating member, it is required to have strength, abrasion resistance, and conformability with the mating member. Therefore, high-strength brass having these characteristics is frequently used in the production thereof. In addition, there is another type of transmission synchronization ring, commonly known as a pin type, in which a screw is provided on an outer peripheral side and friction occurs with a tapered cone as a mating member on the outer peripheral side.
しかし、近年の変速機の高出力化に伴い、上記の従来
高力黄銅製変速機同期リングにおいては、特に上記のテ
ーパーコーンやキー、さらにハブスリーブのチャンファ
のうちの少くともいずれかの相手部材との接触摺動面は
高面圧を受けるようになるため、初期なじみ性が低下
し、これによって輝面摩耗や凝着摩耗などによる異常摩
耗が多発するようになり、使用寿命短命化の原因となっ
ている。However, with the recent increase in the output of the transmission, in the above-mentioned conventional high-strength brass transmission synchronous ring, at least one of the tapered cones and the keys, and at least one of the mating members of the hub sleeve chamfer. The sliding surface that comes in contact with the bearing is subjected to a high surface pressure, which reduces the initial conformability and causes abnormal wear such as shining surface wear and adhesion wear, which shortens the service life. It has become.
そこで、本発明者等は、上記のような従来高力黄銅製
変速機同期リングのもつ問題点を解決すべく研究を行な
った結果、重量％で（以下、％は重量％を示す）、 Zn:10〜40％、Al:1.5〜８％、 Zrおよび／またはV:0.1〜４％、 Sn:0.1〜４％、 を含有し、さらに必要に応じて、 Mn:0.1〜８％、 を含有し、残りがCuと不可避不純物からなる組成を有す
るCu系焼結合金で構成し、かつ相手部材との接触摺動面
の所要箇所、すなわちテーパーコーンやキー、さらにハ
ブスリーブのチャンファのうちの少くともいずれかの相
手部材との接触摺動面に、 空孔率:0.05〜５容量％、 の空孔が存在する変速機同期リングにおいては、変速機
の高出力化に伴う高面圧下での使用条件でも、すぐれた
初期なじみ性を示し、使用初期における異常摩耗の発明
が抑制されるようになるという知見を得たのである。Therefore, the present inventors have conducted research to solve the problems of the conventional high-strength brass transmission synchronization ring as described above, and as a result, in terms of% by weight (hereinafter,% indicates% by weight), Zn : 10 to 40%, Al: 1.5 to 8%, Zr and / or V: 0.1 to 4%, Sn: 0.1 to 4%, and, if necessary, Mn: 0.1 to 8% The remainder is made of a Cu-based sintered alloy having a composition consisting of Cu and unavoidable impurities, and at least required portions of the contact sliding surface with the mating member, i.e., taper cones and keys, and at least one of the hub sleeve chamfers. In a transmission synchronous ring in which a hole having a porosity of 0.05 to 5% by volume is present on the sliding surface in contact with either of the mating members, a high surface pressure due to the high output of the transmission causes Even in use conditions, it shows excellent initial conformability, and the invention of abnormal wear in the early use is suppressed. It was found that it was.
この発明は、上記知見にもとづいてなされたものであ
って、以下に変速機同期リングを構成するCu系焼結合金
の成分組成および空孔率を上記の通りに限定した理由を
説明する。The present invention has been made based on the above findings, and the reason why the component composition and the porosity of the Cu-based sintered alloy constituting the transmission synchronization ring are limited as described above will be described below.
（ａ） ZnおよびAl これらの成分は、素地組織を決定する成分であって、
素地の耐摩耗性を向上させると共に、変速機同期リング
に必要な強度と靱性を付与し、さらに、疲労強度と体力
の向上に寄与し、かつ局部的高温加熱に伴う塑性流動に
よる凝着（焼付き）を防止し、もって初期異常摩耗を防
止し、油だまり中に於いては初期なじみ性を向上させる
作用をもつが、その含有量がZn:10％未満およびAl:1.5
％未満では、前記特性を確保することができず、一方そ
の含有量がZn:40％およびAl:8％を越えると、靱性が低
下するようになることから、その含有量をZn:10〜40
％、Al:1.5〜８％と定めた。(A) Zn and Al These components are components that determine the base structure,
In addition to improving the abrasion resistance of the base material, it also provides the necessary strength and toughness to the transmission synchronous ring, further contributes to the improvement of fatigue strength and physical strength, and adheres to the plastic flow caused by local high-temperature heating. ), Thereby preventing the initial abnormal wear and improving the initial conformability in the oil pool, but the content is less than Zn: 10% and Al: 1.5
%, The above-mentioned properties cannot be ensured. On the other hand, if the content exceeds Zn: 40% and Al: 8%, the toughness is reduced. 40
%, Al: 1.5 to 8%.
（ｂ） ZrおよびＶと、Sn ZrおよびＶと、Snには、共存した状態で、結晶粒を微
細化すると共に、素地に微細に分散する金属間化合物を
形成して、強度および靱性を向上させ、さらに耐摩耗性
を向上させ、なじみ性および耐焼付性を向上させる作用
があるが、その含有量が、それぞれ0.1％未満では前記
作用に所望の効果が得られず、一方その含有量がそれぞ
れ４％を越えると靱性が低下するようになることから、
その含有量を、Zrおよび／またはV:0.1〜４％、Sn:0.1
〜４％とそれぞれ定めた。(B) Zr and V, Sn Zr, V and Sn coexist to refine crystal grains and form intermetallic compounds that are finely dispersed in the base material to improve strength and toughness. Has the effect of further improving the abrasion resistance and improving the conformability and seizure resistance. However, if the content is less than 0.1%, the desired effect cannot be obtained in the above-mentioned effects, while the content is If each exceeds 4%, the toughness will decrease.
The content of Zr and / or V: 0.1-4%, Sn: 0.1
４4%.
（ｃ） Mn Mn成分には、素地に固溶して、これを強化すると共
に、金属間化合物を微細球状化し、もって耐摩耗性を向
上させる作用があるので、必要に応じて含有されるが、
その含有量が0.1％未満では前記作用に所望の向上効果
が得られず、一方その含有量が８％を越えてもより一層
の向上効果が現われないことから、その含有量を0.1〜
８％と定めた。(C) Mn The Mn component has the effect of forming a solid solution in the base material, strengthening it, and also forming an intermetallic compound into fine spheres, thereby improving the wear resistance. ,
If the content is less than 0.1%, a desired improvement effect on the above-mentioned effect cannot be obtained. On the other hand, if the content exceeds 8%, no further improvement effect appears, so that the content is 0.1 to 0.1%.
8%.
（ｄ） 空孔率 空孔には、実用時に油溜りとなって、特に変速機同期
リング内面の初期なじみ性を向上させ、かつこれの温度
上昇を抑制して凝着摩耗を防止するほか、耐摩耗性を向
上させ、さらに空孔面に薄い酸化膜を形成して摩耗を正
常化する作用があるが、その割合が0.05容量％未満では
前記作用に所望の効果が得られず、一方その割合が５容
量％を越えると、強度が低下し、実用に供することがで
きなくなることから、その割合を0.05〜５％と定めた。(D) Porosity The porosity serves as an oil sump in practical use. In particular, it improves the initial conformability of the inner surface of the transmission synchronous ring and suppresses the temperature rise thereof to prevent adhesive wear. It has the effect of improving wear resistance and further normalizing wear by forming a thin oxide film on the pore surface. However, if the proportion is less than 0.05% by volume, the desired effect cannot be obtained in the above-mentioned effect. If the ratio exceeds 5% by volume, the strength is reduced and it is not possible to put it to practical use. Therefore, the ratio is set to 0.05 to 5%.
つぎに、この発明のCu系焼結合金製変速機同期リング
を実施例により具体的に説明する。Next, a transmission synchronous ring made of a Cu-based sintered alloy according to the present invention will be specifically described with reference to examples.
原料粉末として、いずれも200mesh以下の粒度を有す
るCu粉末、Zn粉末、Al粉末、Zr粉末、Ｖ粉末、Sn粉末、
およびMn粉末を用意し、これら原料粉末をそれぞれ第１
表に示される配合組成に配合し、通常の条件で混合した
後、圧力:4ton/cm2にてプレス成形して圧粉体とし、こ
れら圧粉体を450〜700℃の範囲内の所定の温度にて仮焼
結したのち、この仮焼結体に、 （Ａ） 550℃〜850℃の範囲内の所定の温度で熱間鍛造
（以下、加工手段Ａという）、 （Ｂ） 650℃〜900℃の範囲内の所定の温度でH2ガス雰
囲気中にて焼結（以下、加工手段Ｂという）、 （Ｃ） 650℃〜900℃の範囲内の所定の温度でH2ガス雰
囲気中にて焼結後、550〜850℃の範囲内の所定の温度で
熱間鍛造（以下、加工手段Ｃという）、 以上（Ａ）〜（Ｃ）のうちのいずれかの加工手段を施
すことにより、第１表に示される空孔率をもち、かつ実
質的に配合組成と同じ成分組成および内径:74.5mm×厚
さ:4mmの寸法をもったチャンファ数:36個の本発明Cu系
焼結合金製変速機同期リング（以下、本発明同期リング
という）１〜８および比較Cu系焼結合金製変速機同期リ
ング（以下、比較同期リングという）１〜５をそれぞれ
製造した。As a raw material powder, Cu powder, Zn powder, Al powder, Zr powder, V powder, Sn powder, each having a particle size of 200 mesh or less,
And Mn powder are prepared,
After blending into the blending composition shown in the table and mixing under normal conditions, pressure: press molded at 4 ton / cm 2 to form green compacts, and these green compacts are in a predetermined range of 450 to 700 ° C. After pre-sintering at a temperature, the pre-sintered body is subjected to (A) hot forging (hereinafter referred to as processing means A) at a predetermined temperature in the range of 550 ° C. to 850 ° C., and (B) 650 ° C. Sintering in a H 2 gas atmosphere at a predetermined temperature in the range of 900 ° C. (hereinafter referred to as processing means B), (C) in a H 2 gas atmosphere at a predetermined temperature in the range of 650 ° C. to 900 ° C. After sintering, hot forging (hereinafter referred to as processing means C) at a predetermined temperature in the range of 550 to 850 ° C., and by performing any of the processing means (A) to (C) above, The composition having the porosity shown in Table 1, and having substantially the same composition as the composition and the number of chamfers having an inner diameter of 74.5 mm × thickness: 4 mm: 36 sintered Cu-based alloys of the present invention Ltd. transmission synchronizing ring (hereinafter, the present invention synchronization ring hereinafter) 1-8 and comparative Cu-based sintered alloy transmission synchronizing ring (hereinafter, compared synchronizing ring hereinafter) was 1-5 were prepared, respectively.
なお、比較同期リング１〜５は、これを構成するCu系
焼結合金の成分組成および空孔率のうちいずれかの条件
（第１表に※印を付す）がこの発明の範囲から外れたも
のである。Any of the comparative synchronous rings 1 to 5 (marked with * in Table 1) out of the component composition and porosity of the Cu-based sintered alloy constituting the ring is out of the scope of the present invention. Things.
つぎに、上記各種同期リングについて、 相手部材たるテーパーコーンの回転数:1600r.p.m.、 押付け荷重:52kg、 油種:70番ギヤーオイル、 油温:70℃、 テーパーコーンの作動:0.5〜0.6秒の同期時間で２万
回、 の条件でシンクロ耐久試験を行ない、同期リング内面に
おける落ち込み量（摩耗量）、凝集摩耗の有無、初期
（500回まで）および後期（安定期）の摩擦係数、並び
に同期リングの割れおよび変形の有無をそれぞれ測定お
よび観察し、それらの結果を第１表に示した。Next, regarding the above-mentioned various synchronous rings, the rotation speed of the tapered cone as the mating member: 1600 rpm, Pressing load: 52kg, Oil type: No. 70 gear oil, Oil temperature: 70 ° C, Taper cone operation: 20,000 times with a synchronization time of 0.5 to 0.6 seconds. The amount (wear), the presence or absence of cohesive wear, the initial (up to 500 times) and late (stable) friction coefficients, and the presence or absence of cracks and deformation of the synchronous ring were measured and observed, and the results are shown in Table 1. It was shown to.
第１表に示される結果から、本発明同期リング１〜８
は、いずれも高面圧条件にもかかわらず割れおよび変形
の発生なく、実用初期におけるなじみ性にすぐれ、異常
摩耗の発生もなく、すぐれた耐摩耗性を示すのに対し
て、比較同期リング１〜５に見られるように、構成要件
のうちのいずれかの要件がこの発明の範囲から外れる
と、上記特性のうちの少くともいずれかの特性が劣った
ものになることが明らかである。なお、ピンタイプの同
期リングでも同様な結果が得られることは勿論である。From the results shown in Table 1, the synchronous rings 1 to 8 of the present invention are shown.
All showed no cracks and deformations despite high surface pressure conditions, excellent conformability in the initial stage of practical use, no abnormal wear, and excellent wear resistance. As can be seen from Nos. 5 to 5, it is clear that if any of the constituent elements deviates from the scope of the present invention, at least one of the above-mentioned properties becomes inferior. It is needless to say that a similar result can be obtained with a pin type synchronous ring.
上述のように、この発明のCu系焼結合金製変速機同期
リングは、高強度と高靱性を有し、特に初期なじみ性に
すぐれ、変速機の高出力化に伴う苛酷な条件下での実用
に際しても、輝面摩耗や凝着摩耗などの異常摩耗の発生
がなく、すぐれた耐摩耗性を著しく長期に亘って発揮す
るのである。As described above, the transmission synchronous ring made of a Cu-based sintered alloy of the present invention has high strength and high toughness, is particularly excellent in initial conformability, and under severe conditions associated with increasing the output of the transmission. Even in practical use, there is no occurrence of abnormal wear such as bright surface wear and adhesion wear, and excellent wear resistance is exhibited for a remarkably long period.
第１図は変速機同期リングを例示する斜視図である。 １……テーパーコーン摩擦面（内面）、 ２……チャンファ、 ３……キー溝。 FIG. 1 is a perspective view illustrating a transmission synchronization ring. 1 ... taper cone friction surface (inner surface), 2 ... chamfer, 3 ... keyway.
Claims (2)
重量％）を有するCu系焼結合金で構成され、かつ、少な
くとも相手部材との接触摺動部に、 空孔率:0.05〜５容量％、 の空孔が存在することを特徴とするCu系焼結合金製変速
機同期リング。1. A composition comprising: Zn: 10 to 40%, Al: 1.5 to 8%, Zr and / or V: 0.1 to 4%, Sn: 0.1 to 4%, with the balance being Cu and unavoidable impurities. (More than weight%), characterized in that porosity of 0.05 to 5% by volume is present in at least the sliding part in contact with the mating member. Transmission synchronous ring made of Cu-based sintered alloy.
重量％）を有するCu系焼結合金で構成され、かつ、少く
とも相手部材との接触摺動面に、 空孔率:0.05〜５容量％、 の空孔が存在することを特徴とするCu系焼結合金製変速
機同期リング。(2) Zn: 10 to 40%, Al: 1.5 to 8%, Zr and / or V: 0.1 to 4%, Sn: 0.1 to 4%, and further Mn: 0.1 to 8%, , And the remainder is composed of a Cu-based sintered alloy having a composition of Cu and unavoidable impurities (at least by weight%), and at least a sliding surface in contact with a mating member has a porosity of 0.05 to 5 A transmission synchronous ring made of a Cu-based sintered alloy, characterized by having pores having a capacity of%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63079781A JP2605790B2 (en) | 1988-03-31 | 1988-03-31 | Transmission synchronous ring made of Cu-based sintered alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63079781A JP2605790B2 (en) | 1988-03-31 | 1988-03-31 | Transmission synchronous ring made of Cu-based sintered alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01252742A JPH01252742A (en) | 1989-10-09 |
| JP2605790B2 true JP2605790B2 (en) | 1997-04-30 |
Family
ID=13699748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63079781A Expired - Lifetime JP2605790B2 (en) | 1988-03-31 | 1988-03-31 | Transmission synchronous ring made of Cu-based sintered alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2605790B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4424810B2 (en) * | 2000-03-27 | 2010-03-03 | 株式会社小松製作所 | Sintered material |
| JP3915889B2 (en) * | 2001-10-26 | 2007-05-16 | Ｙｋｋ株式会社 | Nickel-free white copper alloy and method for producing nickel-free white copper alloy |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934223A (en) * | 1982-08-19 | 1984-02-24 | 松下電器産業株式会社 | Automatic rice cooking apparatus |
| JPS59197543A (en) * | 1983-04-22 | 1984-11-09 | Sanpo Shindo Kogyo Kk | Tough abrasion resistant copper alloy |
-
1988
- 1988-03-31 JP JP63079781A patent/JP2605790B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01252742A (en) | 1989-10-09 |
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