JP2805056B2 - Synchronizer ring manufacturing method - Google Patents
Synchronizer ring manufacturing methodInfo
- Publication number
- JP2805056B2 JP2805056B2 JP3273489A JP27348991A JP2805056B2 JP 2805056 B2 JP2805056 B2 JP 2805056B2 JP 3273489 A JP3273489 A JP 3273489A JP 27348991 A JP27348991 A JP 27348991A JP 2805056 B2 JP2805056 B2 JP 2805056B2
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- forging
- synchronizer ring
- relief
- present
- 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 - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000005242 forging Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000005245 sintering Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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
-
- 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
- F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
- F16D23/06—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
- F16D2023/0656—Details of the tooth structure; Arrangements of teeth
-
- 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
- F16D2250/00—Manufacturing; Assembly
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Powder Metallurgy (AREA)
- Mechanical Operated Clutches (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車等の手動変速機
に付帯する同期装置部品であるシンクロナイザリングを
焼結および熱間鍛造により製作するに好適な製造方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing method suitable for manufacturing a synchronizer ring, which is a synchronizer component attached to a manual transmission such as an automobile, by sintering and hot forging.
【０００２】[0002]
【従来技術】シンクロナイザリングは、同期装置の構造
により形状的に多少異なるが、図４に示すように外径の
一端側周囲部１２に外歯１３を持ち、他端側周囲部１４
にシンクロナイザハブの内径溝と噛み合うための突起状
のキー部１５を備えている。またこのシンクロナイザリ
ングには、キー部１５との関係により、図５（イ）に示
す如くキー１５の軸方向根元部に逃げ部１６が付設され
たり、図５（ロ）に示す如く逃げ部１６と共に径方向根
元部にも逃げ部１７が付設されることが多い。ところ
で、前記シンクロナイザリングは、材料が鉄系または銅
系合金であり、溶製材料を鍛造して造形したり、通常の
焼結品、あるいは焼結体を鍛造して製作される。焼結鍛
造では、最終形状に近いいわゆるニアネットシェープの
焼結素材を熱間鍛造により、焼結素材全長寸法の１０〜
１５％ 程度まで圧縮し、造形および高密度化される。
この焼結鍛造によれば、溶製材の鍛造に比べて材料歩留
まり、製品寸法精度および金型寿命の点で有利であり、
溶製材料のものと同等な強度が得られるからトラックや
農業機械分野のような高強度を必要とするものにまで適
用できる。2. Description of the Related Art A synchronizer ring has a slightly different shape depending on the structure of a synchronizer. However, as shown in FIG.
And a protruding key portion 15 for engaging with the inner diameter groove of the synchronizer hub. Further, in this synchronizer ring, depending on the relationship with the key portion 15, an escape portion 16 is attached to the axial base portion of the key 15 as shown in FIG. 5 (a), or the escape portion 16 as shown in FIG. At the same time, a relief portion 17 is often provided at the radial base. The synchronizer ring is made of an iron-based or copper-based alloy, and is manufactured by forging a forged material or forging a normal sintered product or a sintered body. In sintering forging, a so-called near net shape sintered material close to the final shape is hot forged, and the sintered material has a total length of 10 to 10 mm.
Compressed to about 15%, shaped and densified.
According to this sintering forging, it is advantageous in terms of material yield, product dimensional accuracy and mold life as compared with forging of ingot material,
Since strength equivalent to that of ingot material can be obtained, it can be applied to those requiring high strength such as trucks and agricultural machinery.
【０００３】[0003]
【発明が解決しようとする課題】しかし、焼結鍛造法に
よる方法にあっては、金型寿命の点で溶製材料を鍛造す
る場合よりも有利とはいえ、依然として摩耗が進み易く
金型寿命が短いということが課題の１つに挙げられてい
る。これは、特に図５（イ），（ロ）のようなキー部１
５の根元部に逃げ部１６や逃げ部１６，１７を設けたも
ののときに、これに対応する鍛造金型の角部（図中、符
号１５ｒに当たる部分）の摩耗進行が激しく、金型交換
に伴う型費などにより、コスト高の原因になっている。However, the method using the sintering forging method is more advantageous than the case of forging a smelting material in terms of the life of the mold, but the wear is still easy to proceed, and the life of the mold is difficult. Is one of the issues. This is especially true for the key unit 1 shown in FIGS.
In the case where the escape portion 16 and the escape portions 16 and 17 are provided at the root portion of No. 5, the wear of the corresponding forged die corners (the portion corresponding to reference numeral 15r in the drawing) progresses rapidly, and the die replacement is required. Costs are high due to accompanying mold costs.
【０００４】そこで、本発明の目的は、金型寿命を改善
することにより、金型費を軽減し量産効率を向上できる
シンクロナイザリングの製造方法を提供することにあ
る。Accordingly, an object of the present invention is to provide a method of manufacturing a synchronizer ring that can reduce the cost of a mold and improve the efficiency of mass production by improving the life of the mold.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明の焼結鍛造によるシンクロナイザリングの製
造方法は、鍛造する前の焼結体形状を改良したものであ
り、ニアネットシェープの焼結体は、キー部の軸方向根
元に設けられる逃げ部に対応する逃げ部を持つと共に、
この逃げ部と対抗する外歯寄りの端面に凹部を有してい
ることを要旨としている。ここで、前記焼結体における
前記凹部の深さは、鍛造による圧縮量と同じ程度に設定
することが好ましい。焼結体における逃げ部の深さは、
鍛造して造形される逃げ部の深さとほぼ等しいか、これ
よりも大きく設定することができる。In order to achieve the above object, a method for manufacturing a synchronizer ring by sintering forging according to the present invention is an improvement in the shape of a sintered body before forging, and a method for manufacturing a near net shape. The sintered body has an escape portion corresponding to the escape portion provided at the axial root of the key portion,
The gist of the invention is that a concave portion is provided on the end face near the external teeth opposing the escape portion. Here, it is preferable that the depth of the concave portion in the sintered body is set to be approximately the same as the amount of compression by forging. The depth of the relief in the sintered body is
The depth can be set to be substantially equal to or larger than the depth of the relief portion formed by forging.
【０００６】[0006]
【作用】焼結体に設ける逃げ部は、鍛造により造形され
る逃げ部とほぼ相似形とすることにより、鍛造中に逃げ
部に対応する金型の部分に過剰の圧力がかかることがす
くなく、逃げ部近傍の塑性流動も少なくなる。また、焼
結体に設ける凹部は、鍛造のときに凹部の底面と金型に
おける加圧パンチ面の間に隙間を生ずるから、逃げ部か
ら凹部に至る焼結材料の圧縮変形が僅かとなり、逃げ部
に対応する金型部分に加わる圧力を緩和することとな
る。The relief provided in the sintered body has a shape substantially similar to the relief formed by forging, so that excessive pressure is not easily applied to a portion of the mold corresponding to the relief during forging. The plastic flow near the relief is also reduced. Also, since the concave portion provided in the sintered body creates a gap between the bottom surface of the concave portion and the pressing punch surface of the mold during forging, the compression deformation of the sintered material from the escape portion to the concave portion becomes small, and The pressure applied to the mold portion corresponding to the portion is reduced.
【０００７】[0007]
【実施例】以下、実施例により本発明の製造方法を従来
方法と比較しつつ説明する。本発明方法は、ニアネット
シェープの焼結体に熱間鍛造を施して図４に示すような
外観のシンクロナイザリング１０を製作すものであり、
従来方法に対して熱間鍛造に用いる焼結体に工夫がなさ
れている。シンクロナイザリング１０は、外径の一端側
周囲部１２に外歯１３を持ち、他端側周囲部１４にシン
クロナイザハブの内径溝と噛み合うための突起状のキー
部１５を備えている点、キー部１５の軸方向根元部に逃
げ部１６が付設されている点で従来のものと製品外観的
に同じであり、異なる点は逃げ部１６と対抗する外歯１
３寄りの端面に凹部を有した焼結体を用いていることで
ある。EXAMPLES Hereinafter, the production method of the present invention will be described with reference to examples in comparison with the conventional method. According to the method of the present invention, a synchronizer ring 10 having an appearance as shown in FIG. 4 is produced by subjecting a near net shape sintered body to hot forging.
The sintered body used for hot forging has been devised in comparison with the conventional method. The synchronizer ring 10 has external teeth 13 on one end side peripheral portion 12 of the outer diameter, and a projection-like key portion 15 for meshing with the inner diameter groove of the synchronizer hub on the other end side peripheral portion 14. 15 is the same as the conventional product in the point that an escape portion 16 is provided at the axial base portion, and the difference is that the external teeth 1 opposed to the escape portion 16 are different.
That is, a sintered body having a concave portion on the end face close to 3 is used.
【０００８】ここで、用いられた焼結体は、この製品外
観にほぼ相似するものであり、便宜上、使用焼結体の各
部を説明するときには製品各部の符号に（’）を付け
る。図１は本発明に係る焼結体の要部を示している。凹
部１７’は外歯１３’寄りの端面を切欠したもので、両
逃げ部１６’間の幅をなし、深さが１ｍｍ（歯筋長さの
約２０％）ないしは０．５ｍｍ（歯筋長さの約１０％）
に形成される。材料は、２％Ｎｉ−０．５％Ｍｏ−０．
３％Ｍｎ−０．２％Ｃの鉄系合金であり、成形密度が
６．６ｇ／ｃｍ3、温度１１３０℃にて焼結される。焼
結体の各部の概略寸法は、外歯１３’の歯先寸法が１０
２ｍｍ、歯筋長さが５．４ｍｍ、内径寸法が７８ｍｍ、
周囲部１４’あるいはキー部１５’の外径寸法が９０ｍ
ｍ、全長寸法が１３ｍｍであり、キー部１５’は周囲部
１４’に３個あり、幅寸法が５ｍｍである。また外歯１
３’はチャンファ付きで歯数が２０個である。凹部１
７’の深さは１ｍｍないしは０．５ｍｍである。一方、
得られたニアネットシェープの焼結体は熱間鍛造により
圧縮成形される。この場合、熱間鍛造の金型は、従来と
同様に内孔が段付き形状のハイス製のダイと、上下パン
チおよびコアで構成され、温度１４０〜２００℃に加熱
されている。焼結体は窒素ガス中で温度９００〜１００
０℃に加熱され、黒鉛系の潤滑剤を塗布した鍛造金型中
で、圧力が９ｔ／ｃｍ2にて圧縮されることにより、図
１のシンクロナイザリング１０に形成されるのである。Here, the used sintered body is substantially similar to the appearance of the product, and for convenience, when describing each part of the used sintered body, the reference numeral of each part of the product is indicated by ('). FIG. 1 shows a main part of a sintered body according to the present invention. The concave portion 17 'is formed by cutting off the end face near the external teeth 13', and forms a width between the two clearance portions 16 'and has a depth of 1 mm (about 20% of the length of the tooth trace) or 0.5 mm (length of the tooth trace). About 10% of
Formed. The material is 2% Ni-0.5% Mo-0.
It is an iron-based alloy of 3% Mn-0.2% C, and is sintered at a molding density of 6.6 g / cm 3 and a temperature of 1130 ° C. The approximate dimensions of each part of the sintered body are as follows:
2mm, tooth trace length 5.4mm, inner diameter dimension 78mm,
The outer diameter of the peripheral part 14 'or the key part 15' is 90m
m, the total length is 13 mm, three key portions 15 'are provided on the peripheral portion 14', and the width is 5 mm. External teeth 1
3 'has chamfers and 20 teeth. Recess 1
The depth of 7 'is 1 mm or 0.5 mm. on the other hand,
The obtained sintered body of the near net shape is compression-molded by hot forging. In this case, the hot forging die is composed of a high-speed die with a stepped inner hole, upper and lower punches and a core, as in the conventional case, and is heated to a temperature of 140 to 200 ° C. The sintered body is heated in nitrogen gas at a temperature of 900-100.
The synchronizer ring 10 of FIG. 1 is formed by being heated to 0 ° C. and compressed at a pressure of 9 t / cm 2 in a forging die coated with a graphite-based lubricant.
【０００９】以上のように、本発明は鍛造する前の焼結
体形状を改良したものであるが、焼結体形状の相違によ
る作用効果を次のような設定にて調べた。図２（イ）に
示す前述の本発明焼結体と、同様に製作された図２
（ロ），（ハ），（ニ）に示す比較例としての焼結体を
それぞれ８０００個つづ製作した。なお、図２（イ）の
焼結体は凹部１７’の深さが０．５ｍｍのもの（試料
１）と、１ｍｍのもの（試料２）の２種類を用意した。
同図（ロ）の焼結体は逃げ部１６’および凹部１７’が
ないものでこれを試料３とした。同図（ハ）の焼結体は
逃げ部１６’がなく凹部１７’を持つもので、凹部１
７’の深さが０．５ｍｍのもの（試料４）と、１ｍｍの
もの（試料５）の２種類を用意した。同図（ニ）の焼結
体は逃げ部１６’を持ち凹部１７’がないものでこれを
試料６とした。試料１〜５の焼結体のグループについて
個別に熱間鍛造を行った。熱間鍛造は、前述の鍛造金型
で、同じ成形条件にて圧縮成形し、鍛造個数４０００個
および８０００個のときに逃げ部１６’に対応する金型
の角部（図中、符号１６Ｒに当たる部分）の摩耗状況を
測定した。なお、鍛造金型の角部の初期Ｒ面取り量は
０．３である。As described above, the present invention is an improvement of the shape of the sintered body before forging. The effect of the difference in the shape of the sintered body was examined under the following settings. The sintered body of the present invention described above shown in FIG.
8000 sintered bodies as comparative examples shown in (b), (c) and (d) were manufactured respectively. In addition, two types of the sintered body of FIG. 2A were prepared, one having a concave portion 17 ′ having a depth of 0.5 mm (sample 1) and one having a depth of 1 mm (sample 2).
The sintered body shown in FIG. 2B has no escape portion 16 ′ and no concave portion 17 ′. The sintered body shown in FIG. 3C has no recess 16 ′ but a recess 17 ′.
Two types of 7 ′ having a depth of 0.5 mm (sample 4) and 1 mm (sample 5) were prepared. The sintered body of FIG. 4D has a relief portion 16 ′ and no concave portion 17 ′. Hot forging was individually performed on the group of the sintered bodies of Samples 1 to 5. In hot forging, compression molding is performed under the same molding conditions with the above-described forging die, and when the number of forgings is 4000 or 8000, the corners of the die corresponding to the relief 16 ′ (corresponding to the reference numeral 16R in the figure). Part) was measured. Note that the initial radius of the chamfer at the corner of the forging die is 0.3.
【００１０】この測定結果は次の表１の通りになった。The results of the measurement are as shown in Table 1 below.
【表１】 この表から明かな通り、本発明に係る図２（イ）の焼結
体を用いた場合は、他の何れの焼結体を用いたときより
も鍛造金型の摩耗量が少なく、また鍛造個数が多くなる
ほど顕著な差となる。特に、本発明の試料１，２の場合
は、比較例の試料３の場合の約半分となり、金型寿命を
飛躍的に向上できることが分かる。また、試料２の場合
は試料１よりも優れた結果になることから、焼結体に設
ける凹部１７’の深さは製品の耐久性などを損なわない
範囲である程度深い方が好ましいといえる。[Table 1] As is clear from this table, when the sintered body of FIG. 2A according to the present invention was used, the abrasion loss of the forging die was smaller than when any of the other sintered bodies were used, The greater the number, the more noticeable the difference. In particular, in the case of the samples 1 and 2 of the present invention, it is about half that of the sample 3 of the comparative example, and it can be seen that the mold life can be remarkably improved. In addition, in the case of the sample 2, since the result is superior to that of the sample 1, it can be said that the depth of the concave portion 17 'provided in the sintered body is preferably somewhat deep as long as the durability of the product is not impaired.
【００１１】なお、本発明は、前記焼結体に設けられる
凹部１７’を、図３の（イ），（ロ），（ハ）に示す如
くその具体的形状を変更することが可能であり、同様な
作用効果が得られる。同図（イ）は各逃げ部１６’に対
抗する１対の凹部１８’であり、同図（ロ）および
（ハ）は凹部１７’と同様に両逃げ部１６’間の幅をな
しているが、前者は径方向の切欠量がキー部１５’とほ
ぼ一致した凹部１９’に形成され、後者は外歯１３’寄
りの端面に内側が低い段差を持たせ、その低い内側端面
２０’と同一面となる凹部１９’に形成したものであ
る。なお、図５（ロ）のように軸方法の逃げ部６と径方
向の逃げ部７とを備えている場合、用いられる焼結体に
は逃げ部６と径方向の逃げ部７とに対応する各逃げ部
６’，７’を設けておくことが好ましい。According to the present invention, the specific shape of the recess 17 'provided in the sintered body can be changed as shown in FIGS. 3 (a), 3 (b) and 3 (c). The same operation and effect can be obtained. FIG. 7A shows a pair of recesses 18 'opposed to the escape portions 16', and FIGS. 9B and 9C show the width between the escape portions 16 'as in the case of the recess 17'. However, the former is formed in a concave portion 19 ′ in which the radial cutout amount substantially coincides with the key portion 15 ′, and the latter has a lower step on the inner surface near the external teeth 13 ′ and the lower inner end surface 20 ′. It is formed in a concave portion 19 'on the same plane as that of FIG. In addition, when the relief part 6 of the axial method and the relief part 7 of the radial direction are provided as shown in FIG. 5B, the sintered body used corresponds to the relief part 6 and the relief part 7 of the radial direction. It is preferable to provide the escape portions 6 ′ and 7 ′ to be used.
【００１２】[0012]
【発明の効果】以上説明したように、本発明の製造方法
によれば、製品品質を確保した上で鍛造金型の寿命を長
くすることができるので、製品価格的に安価で、効率の
よい生産を可能にすることができる。As described above, according to the manufacturing method of the present invention, the life of the forging die can be extended while ensuring the quality of the product, so that the product is inexpensive and efficient. Production can be enabled.
【図１】本発明の実施例として示す焼結体の要部斜視図
である。FIG. 1 is a perspective view of a main part of a sintered body shown as an example of the present invention.
【図２】本発明に係る焼結体および本発明の作用効果を
調べるために比較例として用いた焼結体を示す要部側面
図である。FIG. 2 is a main part side view showing a sintered body according to the present invention and a sintered body used as a comparative example for examining the operation and effect of the present invention.
【図３】本発明に係る焼結体に設けられる凹部の他の形
状例を示す要部斜視図である。FIG. 3 is a perspective view of a main part showing another example of the shape of the concave portion provided in the sintered body according to the present invention.
【図４】本発明対象であるシンクロナイザリングを示す
製品外観斜視図である。FIG. 4 is a product external perspective view showing a synchronizer ring that is the subject of the present invention.
【図５】前記シンクロナイザリングに設けられる逃げ部
の２例を示す部分斜視図である。FIG. 5 is a partial perspective view showing two examples of a relief portion provided in the synchronizer ring.
１０ シンクロナイザリング １２ 一端側周囲部 １３ 外歯 １４ 他端側周囲部 １５ キー部 １６ 逃げ部 １５’ 焼結体のキー部 １６’ 焼結体の逃げ部 １７’，１８’，１９’ 焼結体の凹部 DESCRIPTION OF SYMBOLS 10 Synchronizer ring 12 One end side peripheral part 13 External tooth 14 Other end side peripheral part 15 Key part 16 Relief part 15 'Key part of sintered body 16' Relief part of sintered body 17 ', 18', 19 'Sintered body Recess
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−93207（ＪＰ，Ａ) 特開 昭61−133304（ＪＰ，Ａ) 特開 平５−39506（ＪＰ，Ａ) 特開 昭62−227544（ＪＰ，Ａ) 特開 平４−327335（ＪＰ，Ａ) 実開 平３−51943（ＪＰ，Ｕ) 実公 昭61−4431（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.6，ＤＢ名) B21K 1/30 B21J 5/02 B22F 5/00 F16D 23/06──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-93207 (JP, A) JP-A-61-133304 (JP, A) JP-A-5-39506 (JP, A) JP-A-62 227544 (JP, A) JP-A-4-327335 (JP, A) JP-A-3-51943 (JP, U) JP-A-64-1431 (JP, Y2) (58) Fields investigated (Int. Cl. 6 , DB name) B21K 1/30 B21J 5/02 B22F 5/00 F16D 23/06
Claims (1)
を施して、外径の一端側周囲部に外歯を持ち、他端側周
囲部にシンクロナイザハブの内径溝と噛み合うための突
起状のキー部を有していると共に、前記キー部の少なく
とも軸方向根元に逃げ部がある外形をしたシンクロナイ
ザリングを成形する製造方法において、 前記熱間鍛造に用いる焼結体は、前記逃げ部に対応する
逃げ部を持つと共に、この逃げ部と対抗する外歯寄りの
端面に凹部を有していることを特徴とするシンクロナイ
ザリングの製造方法。1. A near-net-shaped sintered body is subjected to hot forging to have external teeth at one end of the outer diameter and a projection at the other end to engage with the inner groove of the synchronizer hub. In the manufacturing method for forming a synchronizer ring having an outer shape having a relief portion at least at an axial root of the key portion, the sintered body used for the hot forging includes a relief portion at the relief portion. A method for manufacturing a synchronizer ring, comprising a corresponding relief portion and a concave portion on an end face near the external teeth opposed to the relief portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3273489A JP2805056B2 (en) | 1991-09-26 | 1991-09-26 | Synchronizer ring manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3273489A JP2805056B2 (en) | 1991-09-26 | 1991-09-26 | Synchronizer ring manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0584538A JPH0584538A (en) | 1993-04-06 |
| JP2805056B2 true JP2805056B2 (en) | 1998-09-30 |
Family
ID=17528619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3273489A Expired - Fee Related JP2805056B2 (en) | 1991-09-26 | 1991-09-26 | Synchronizer ring manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2805056B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10048271C1 (en) * | 2000-09-29 | 2002-02-07 | Getrag Getriebe Zahnrad | Synchronizing unit, for a vehicle gearbox, has a lock between the guide sleeve/coupling body and the synchronizing ring, for no relative movements in one ring axial position and free movements when in the second position |
| CN100394075C (en) * | 2006-11-22 | 2008-06-11 | 重庆长风精化毛坯有限责任公司 | Gear ring blank for automobile synchronizer and method for processing same |
| JP5276626B2 (en) * | 2010-06-11 | 2013-08-28 | 大岡技研株式会社 | Multi-cone sync clutch gear |
| JP6019974B2 (en) * | 2012-09-14 | 2016-11-02 | いすゞ自動車株式会社 | Synchromesh mechanism and vehicle transmission equipped with the same |
-
1991
- 1991-09-26 JP JP3273489A patent/JP2805056B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0584538A (en) | 1993-04-06 |
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