JPS6227896B2 - - Google Patents
Info
- Publication number
- JPS6227896B2 JPS6227896B2 JP57148714A JP14871482A JPS6227896B2 JP S6227896 B2 JPS6227896 B2 JP S6227896B2 JP 57148714 A JP57148714 A JP 57148714A JP 14871482 A JP14871482 A JP 14871482A JP S6227896 B2 JPS6227896 B2 JP S6227896B2
- Authority
- JP
- Japan
- Prior art keywords
- clutch
- punch
- volume
- manufacturing
- workpiece
- 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
Links
- 239000000463 material Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000010273 cold forging Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 238000005242 forging Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method 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
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
この発明はオーバランニングクラツチ、特に機
関始動装置（スタータモータ）に装着されるオー
バランニングクラツチのクラツチ筐体の製造方法
に関するものである。
従来のこの種のクラツチ筐体の製造方法を第１
図ａないしｃに示す。これらの各図において従来
は、合金銅からなる棒材を切断加工した素材１
を、上下方向から据込み加工して原料素材２と
し、この原料素材２をダイス３に装入させ、パン
チ４により荷重Ｆを加え、この冷間鍛造加工によ
りクラツチ筐体素材５を得たのち、この素材５の
一点鎖線部Ａ，Ｂを削除し、かつ内側カム部Ｃを
形成するものである。
しかして第２図に示すように、オーバランニン
グクラツチ６は、前記のようにして得た筐体７を
用い、その前記Ｂ部に形成されたヘリカルスプラ
イン７ａを、入力回転軸８のヘリカルスプライン
８ａに前後方向摺動可能に係合させると共に、ク
ラツチインナ９部のある出力回転軸１０を、同ク
ラツチインナ９部がカム部Ｃと対向するように、
スリーブベアリング１１により枢支させ、さらに
カム部Ｃとクラツチインナ９間に形成される楔形
空間には円柱状のローラ１２を介在させ、かつこ
れをワツシヤ１３を介しカバー１４で押止させて
組み立てるのである。なお１５は筐体７の外周面
凹溝７ｂに遊嵌されるワツシヤである。
そしてこの構成のオーバランニングクラツチ６
では、図示しない直流電動機により入力回転軸８
が所定方向に回転駆動されると、この回転はヘリ
カルスプライン係合されている筐体７を経た上
で、公知のように一方向回転クラツチを構成する
カム部Ｃ，ローラ１２，クラツチインナａ部を介
して、出力回転軸１０から取り出され、併せて出
力回転軸１０に加えられる逆方向回転の伝達を阻
止するのである。
こゝで前記したように従来のクラツチ筐体は、
その製造が冷間鍛造工程を主体としており、かつ
鍛造後の削除工程も多くて材料の歩留り率が悪い
などの欠点があり、合理的な製造方法を検討する
必要があつた。
この発明は従来のこのような要求を満足させる
ための新規なクラツチ筐体の製造方法を提供する
ものである。
以下、この発明に係わる製造方法の一実施例に
つき、第３図ａないしｆを参照して詳細に説明す
る。
この実施例方法では、まず第３図ａのように、
原材料より素材１を切断し、かつこれに冷間鍛造
加工に必要な潤滑処理，すなわちリン酸塩皮膜処
理をなしたのち、据込み鍛造加工によつて、第３
図ｂに示す原料素材２を得る。ついで第３図ｃの
ように鍛造加工により凹溝部１６ａをもつ加工素
材１６，さらに第３図ｄのように同凹溝部１６ａ
の底部を穿孔して加工素材１７を得る。
そしてこの加工素材１７に前記と同様に焼鈍
後、潤滑処理を施した上で、第３図ｅの鍛造工程
を経て加工素材１８を得る。すなわち、この加工
素材１８は、所定形状のダイス１９に前記加工素
材１７を装入させ、パンチ２０を用いプレス装置
により加圧力ｐを加え１アクシヨン（１工程）で
据込み加工されるもので、これにより加工素材１
８には、ダイス１９に与えられた形状により、前
記第１図ｃに示す削除部Ａ，Ｂが非切削に形成さ
れることになり、併せて鍔部１８ａと凹溝１８ｂ
とが図示形状に構成され、鍔部下端面と凹溝上端
面とに距離Ｄが与えられる。
続いて次にこの加工素材１８は第３図ｆの冷間
鍛造工程において、所定形状のダイス２２に装入
され、パンチ２３を用いて押圧力Ｑにより図示の
ように前方、後方同時押出しがなされ、目的とす
る筐体ブランク２１が前記と同様に１アクシヨン
（１工程）で成型加工される。すなわち、胴部２
１ａは後方（図示上方）に押出し加工され、前記
第２図に示すヘリカルスプライン７ａ相当の突設
部２１ｂは素材の前方（図示下方）への流れによ
り押出し加工されることになる。そしてこのと
き、突設部２１ｂに流れる素材の体積は、前工程
（第３図ｅ）での距離Ｄおよびパンチ２３の外形
に等しい外径Ｅなる凹溝１８ｂの体積と同一であ
つて、この条件を満足させた場合、パンチ２３に
よつて一体加工される内側カム部Ｃには、材料の
ひけ現象が発生することはない。なお、こゝで材
料のひけ現象は、胴部２１ａが後方（図示上方）
に押出されるとき、鍔部１８ａ方向に材料が流れ
て、カム部Ｃがパンチ２３の表面に沿い構成され
ずに間隙を生じ、パンチ２３の外形々状に一致し
ないカム面が構成されて、カム面の入口径が大き
くなることを意味している。
すなわち、これををまとめると、加工素材１８
の距離Ｄ，直径Ｅなる範囲の素材体積をＶ，突設
部２１ｂの体積をＷとして、
Ｖ≦Ｗ …(1)
の関係式を満足すれば、カム部Ｃにひけを生ずる
ことなしに筐体ブランク２１を製造できる。つい
でこの筐体ブランク２１は必要な後加工しこゝで
は旋削加工をなし、かつ適当な熱処理（焼入れ）
を行なうことにより、前記第２図に示すオーバラ
ンニングクラツチ６の筐体７を得られるのであ
る。
以上のようにこの発明方法によれば、鍔部をも
つ筐体ブランクの素材形状をひけ現象の生じない
(1)式を満足させる構成とし、この素材をダイス，
パンチの金型により押出し加工するようにしたの
で、ブランクの後加工を簡略化でき、筐体を高精
度にしかも安価に製造し得る特長がある。 DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a clutch housing for an overrunning clutch, particularly for an overrunning clutch installed in an engine starting device (starter motor). The first method of manufacturing this type of clutch housing is the conventional one.
Shown in Figures a to c. In each of these figures, the conventional material 1 is a bar made of alloyed copper.
is upturned from the vertical direction to obtain a raw material 2, this raw material 2 is charged into a die 3, a load F is applied by a punch 4, and a clutch housing material 5 is obtained by this cold forging process. , the dashed-dotted line portions A and B of this material 5 are deleted, and an inner cam portion C is formed. As shown in FIG . The output rotating shaft 10 with the clutch inner 9 part is engaged with the cam part C so that the clutch inner part 9 faces the cam part C.
It is pivotally supported by a sleeve bearing 11, and furthermore, a cylindrical roller 12 is interposed in the wedge-shaped space formed between the cam part C and the clutch inner 9, and this is held down by a cover 14 via a washer 13 to assemble it. . Note that 15 is a washer that is loosely fitted into the groove 7b on the outer circumferential surface of the housing 7. And overrunning clutch 6 of this configuration
Now, the input rotating shaft 8 is driven by a DC motor (not shown).
When the is rotated in a predetermined direction, this rotation passes through the casing 7 which is engaged with a helical spline, and then moves through the cam part C, the roller 12, and the clutch inner part a, which constitute a one-way rotating clutch, as is known. This prevents transmission of rotation in the opposite direction taken out from the output rotation shaft 10 and applied to the output rotation shaft 10 at the same time. As mentioned above, the conventional clutch housing is
Its production is mainly based on a cold forging process, and there are drawbacks such as a low material yield rate due to the many steps removed after forging, so it was necessary to consider a rational manufacturing method. The present invention provides a novel method for manufacturing a clutch housing that satisfies these conventional requirements. Hereinafter, one embodiment of the manufacturing method according to the present invention will be described in detail with reference to FIGS. 3a to 3f. In this embodiment method, first, as shown in Figure 3a,
After cutting the material 1 from the raw material and subjecting it to the lubrication treatment necessary for cold forging, that is, phosphate coating treatment, the third material is cut by upsetting forging.
A raw material 2 shown in Figure b is obtained. Next, as shown in FIG. 3c, the workpiece 16 is forged to have a groove 16a, and as shown in FIG.
A hole is drilled in the bottom of the material to obtain a processed material 17. After annealing and lubricating this processed material 17 in the same manner as described above, the processed material 18 is obtained through the forging process shown in FIG. 3e. That is, this workpiece 18 is upset processed in one action (one step) by loading the workpiece 17 into a die 19 of a predetermined shape and applying pressure p by a press device using a punch 20. As a result, processing material 1
8, due to the shape given to the die 19, the deleted parts A and B shown in FIG.
are configured in the illustrated shape, and a distance D is given between the lower end surface of the collar and the upper end surface of the groove. Subsequently, this processed material 18 is charged into a die 22 of a predetermined shape in the cold forging process shown in FIG. Then, the intended housing blank 21 is molded in one action (one step) in the same manner as described above. That is, the torso 2
1a is extruded backward (upward in the figure), and the protrusion 21b corresponding to the helical spline 7a shown in FIG. 2 is extruded by the flow of the material forward (downward in the figure). At this time, the volume of the material flowing into the protrusion 21b is the same as the volume of the groove 18b having the distance D and the outer diameter E equal to the outer shape of the punch 23 in the previous step (Fig. 3e). When the conditions are satisfied, the material sink phenomenon will not occur in the inner cam portion C that is integrally processed by the punch 23. Note that the sinking phenomenon of the material occurs when the body 21a is at the rear (upper side in the figure).
When the material is extruded, the material flows in the direction of the flange 18a, and the cam part C is not formed along the surface of the punch 23, creating a gap, and a cam surface that does not match the outer shape of the punch 23 is formed. This means that the inlet diameter of the cam surface becomes larger. In other words, to summarize this, processing material 18
If the relational expression V≦W (1) is satisfied, where V is the volume of the material in the range of distance D and diameter E, and W is the volume of the protrusion 21b, the casing can be sealed without sinking on the cam part C. A body blank 21 can be manufactured. This housing blank 21 is then subjected to necessary post-processing, including turning, and appropriate heat treatment (quenching).
By doing this, the housing 7 of the overrunning clutch 6 shown in FIG. 2 can be obtained. As described above, according to the method of the present invention, the shape of the material of the housing blank having the flange can be changed without causing the sink phenomenon.
With a configuration that satisfies equation (1), this material can be diced,
Since extrusion processing is performed using a punch mold, post-processing of the blank can be simplified, and the casing can be manufactured with high precision and at low cost.
第１図ａないしｃは従来例による筐体の製造工
程を順次に示す説明図、第２図はオーバランニン
グクラツチの構成を示す半截断面図、第３図ａな
いしｆはこの発明方法の一実施例による製造工程
を順次に示す断面説明図である。
６…オーバランニングクラツチ、７…筐体、１
６ないし１８…加工素材、１８ａ…鍔部、１８ｂ
…凹溝、１９および２２…ダイス、２０および２
３…パンチ、２１…筐体ブランク。
1A to 1C are explanatory diagrams sequentially showing the manufacturing process of the casing according to the conventional example, FIG. 2 is a half-cut sectional view showing the structure of an overrunning clutch, and FIGS. FIG. 2 is a cross-sectional explanatory diagram sequentially showing manufacturing steps according to an example. 6 ...Overrunning clutch, 7...Casing, 1
6 to 18... Processing material, 18a... Flange, 18b
...Concave groove, 19 and 22...Dice, 20 and 2
3... Punch, 21... Housing blank.
Claims (1)
を構成するクラツチ筐体を冷間鍛造加工によつて
製造する製造方法において、筒状を呈する第１の
加工素材を準備し、この第１の加工素材を据込み
鍛造加工することにより内孔が縮径しかつ一端側
外周に鍔部が膨出されるとともにこの鍔部を基準
とする軸方向一端側での次の工程のパンチ押圧部
の体積が該パンチにより前方押出しされる突設部
の体積と同一または小さくなるように第２の加工
素材を形成する工程と、この第２の加工素材を所
定形状のダイス内に装入して前記パンチによる前
方および後方同時押出し加工を行なうことにより
前記突設部および後方押出しされる胴部内側にカ
ム面を一体に有するクラツチ筐体素材を形成する
工程とからなることを特徴とするオーバランニン
グクラツチのクラツチ筐体製造方法。1. In a manufacturing method in which a clutch housing constituting a clutch outer of an overrunning clutch is manufactured by cold forging, a first processed material having a cylindrical shape is prepared, and this first processed material is subjected to an upsetting forging process. As a result, the diameter of the inner hole is reduced and the flange is bulged out on the outer periphery of one end, and the volume of the punch pressing part in the next process on the one end in the axial direction based on this flange is pushed forward by the punch. forming a second workpiece so that the volume is the same as or smaller than the volume of the protrusion, and charging the second workpiece into a die of a predetermined shape and simultaneous front and rear extrusion processing using the punch. A method for manufacturing a clutch casing of an overrunning clutch, comprising the step of forming a clutch casing material having a cam surface integrally inside the protruding portion and the rearwardly extruded body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57148714A JPS5939443A (en) | 1982-08-25 | 1982-08-25 | Production of clutch housing for overruning clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57148714A JPS5939443A (en) | 1982-08-25 | 1982-08-25 | Production of clutch housing for overruning clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5939443A JPS5939443A (en) | 1984-03-03 |
| JPS6227896B2 true JPS6227896B2 (en) | 1987-06-17 |
Family
ID=15458950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57148714A Granted JPS5939443A (en) | 1982-08-25 | 1982-08-25 | Production of clutch housing for overruning clutch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5939443A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63227952A (en) * | 1987-03-14 | 1988-09-22 | Hitachi Ltd | Solenoid-operated fuel injection valve casting and its manufacture |
| US7343768B2 (en) * | 2006-04-12 | 2008-03-18 | Gm Global Technology Operations, Inc. | Method of net-forming an article and apparatus for same |
| JP5195269B2 (en) * | 2007-10-23 | 2013-05-08 | 日本精工株式会社 | One-way clutch and manufacturing method thereof |
| CN106111862B (en) * | 2016-08-29 | 2017-12-26 | 中航动力股份有限公司 | A kind of forging method of GH4901 sleeves spacer ring |
| CN112846057B (en) * | 2021-02-20 | 2022-06-21 | 中国第一重型机械股份公司 | Integral profiling extrusion method for thin-wall pipeline with multiple nozzles |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998368A (en) * | 1973-01-29 | 1974-09-18 | ||
| JPS5553206U (en) * | 1978-09-29 | 1980-04-10 |
-
1982
- 1982-08-25 JP JP57148714A patent/JPS5939443A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998368A (en) * | 1973-01-29 | 1974-09-18 | ||
| JPS5553206U (en) * | 1978-09-29 | 1980-04-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5939443A (en) | 1984-03-03 |
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