JP2658119B2 - Forming method for shaft with collar - Google Patents
Forming method for shaft with collarInfo
- Publication number
- JP2658119B2 JP2658119B2 JP63020246A JP2024688A JP2658119B2 JP 2658119 B2 JP2658119 B2 JP 2658119B2 JP 63020246 A JP63020246 A JP 63020246A JP 2024688 A JP2024688 A JP 2024688A JP 2658119 B2 JP2658119 B2 JP 2658119B2
- Authority
- JP
- Japan
- Prior art keywords
- collar
- forming
- shaft
- punch
- length
- 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
Landscapes
- Forging (AREA)
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は、つば付軸の成形方法に関し、更に詳細には
一端につばを裾込み成形すると同時に他端外周に軸方向
に延びる複数の歯を押出し成形するつば付軸の成形方法
に関し、自動車の変速装置等動力を伝達することを目的
とした部品に利用されるものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a method for forming a shaft with a collar, and more specifically, to form a flange at one end and simultaneously form an axial direction around the other end. TECHNICAL FIELD The present invention relates to a method for forming a shaft with a collar for extruding a plurality of teeth extending in a direction, and is used for a part for transmitting power such as a transmission of an automobile.
（従来の技術） 本発明に関する従来技術としては、一端につばを据込
み成形すると同時に他端外周に軸方向に延びる複数の歯
を押出し成形する場合に第２図に示す素材を第８図に示
すような成形ダイス１とパンチ12により第９図に示すよ
うにパンチ成形している（特願昭62−107539号）。尚、
その他端外周に軸方向に延びる複数の歯を成形される当
該軸は、つば付スプライン軸又はつば付歯車軸として用
いられる。(Prior Art) As a prior art relating to the present invention, a material shown in FIG. 2 is formed by extruding a plurality of teeth extending in the axial direction on the outer periphery of the other end while simultaneously extruding a brim at one end. As shown in FIG. 9, a punch is formed by a forming die 1 and a punch 12 as shown in FIG. 9 (Japanese Patent Application No. 62-107539). still,
The other shaft formed with a plurality of teeth extending in the axial direction on the outer periphery of the other end is used as a spline shaft with a collar or a gear shaft with a collar.
（発明が解決しようとする課題） しかし、前記成形方法に於いて、パンチで歯の押出し
とつば部の据込みの同時成形を行うと、一端側のつば部
８がダイス１に当たりつば部の成形が始まる時点に第９
図に示すように、材料はつば方向10ばかりに流れ、歯が
形成される他端（スプライン軸部又は歯車軸部）９の方
向には材料が流れず、つば部の成形が完了した時点で、
第10図に示すように満足な歯の長さ、即ちスプライン長
さ又は歯車長さが得られないという問題点がある。(Problems to be Solved by the Invention) However, in the above-mentioned molding method, when the extrusion of the teeth and the upsetting of the brim portion are performed simultaneously with the punch, the brim portion 8 on one end side hits the die 1 to form the brim portion. Ninth at the beginning of
As shown in the figure, the material flows only in the brim direction 10, the material does not flow in the direction of the other end (spline shaft portion or gear shaft portion) 9 where the teeth are formed, and at the time when the forming of the brim portion is completed. ,
As shown in FIG. 10, there is a problem that a satisfactory tooth length, that is, a spline length or a gear length cannot be obtained.
これは材料を前方へ押出す力とつばを据込む力を比較
した場合に、つばを据込む力の方が小さくて済み、従つ
てつば部の成形が始まると材料を前方へ押す力が作用せ
ず、つばの方だけ据込まれるためである。This is because when comparing the force to push the material forward and the force to set up the collar, the force to set up the collar is smaller, and therefore the force to push the material forward when the forming of the collar starts This is because only the collar is installed.
本発明は前記成形方法に於いて歯の方向にも材料が流
れる成形方法を技術的課題とするものである。The technical object of the present invention is to provide a molding method in which a material also flows in the direction of teeth in the molding method.
（課題を解決するための手段） 前記技術的課題を解決するために講じた技術的手段
は、成形ダイス及びパンチを用いて、一端につばを裾込
み成形すると同時に他端外周に軸方向に延びる複数の歯
を押出し成形するつば付軸の成形方法において、前記パ
ンチの先端に突起を設け、前記パンチの先端に対向する
前記つばの端面にくぼみを成形することにより、粗形材
の他端方向への材料流動を喚起して、前記つばへの材料
流動との分流を発生させ、つば成形と同時に所定長さの
前記歯を成形する、つば付軸の成形方法を提供すること
である。(Means for Solving the Problems) The technical means taken to solve the above-mentioned technical problem is to form a collar at one end using a molding die and a punch, and at the same time, to extend axially to the outer periphery of the other end. In a method of forming a shaft with a collar for extruding a plurality of teeth, a protrusion is provided at a tip of the punch, and a recess is formed on an end surface of the collar facing the tip of the punch, thereby forming a direction opposite to the other end of the coarse material. It is an object of the present invention to provide a method of forming a collar with a collar, which induces a material flow to the collar to generate a branch flow from the material flow to the collar, and forms the teeth having a predetermined length at the same time as the collar is formed.
（作用） 前記技術的手段は次のように作用する。すなわち、パ
ンチの先端に突起を設けつばの上部にくぼみを同時成形
することにより、材料の軸他端側への流れを制御し充分
な長さの歯（スプライン軸部又は歯車軸部）を形成する
ものである。(Operation) The above technical means operates as follows. That is, by forming a projection at the tip of the punch and simultaneously forming a recess at the top of the flange, the flow of the material to the other end of the shaft is controlled to form a sufficiently long tooth (spline shaft or gear shaft). Is what you do.
（実施例） 以下実施例について説明する。Example An example will be described below.
第１図は一端につばを据込み成形すると同時に他端外
周に軸方向に延びる複数の歯を押出し成形する型構造
で、第２図に成形前の粗形材料形状を示す。尚、以下の
実施例では、その他端外周に軸方向に延びる複数の歯を
成形される当該軸が、つば付スプライン軸である場合に
ついてを述べるが、本発明はこれに限定されるものでは
なく、つば付歯車軸の成形にも同様に用いられる。FIG. 1 shows a mold structure in which a collar is upset at one end and a plurality of teeth extending in the axial direction are extruded around the outer periphery of the other end. FIG. 2 shows a rough material shape before molding. In the following embodiment, a case where a plurality of teeth extending in the axial direction are formed on the outer periphery of the other end will be described as a case where the shaft is a spline shaft with a collar. However, the present invention is not limited to this. It is similarly used for forming a gear shaft with a collar.
第１図に於いて、１は成形ダイス、２はパンチで、３
はつば上部にくぼみを成形する突起であり、第２図に示
す粗形材４は丸棒より冷間鍛造工程を経て成形されたも
のである。In FIG. 1, 1 is a forming die, 2 is a punch, 3
Is a projection for forming a depression at the upper part of the brim, and the rough material 4 shown in FIG. 2 is formed from a round bar through a cold forging process.
第３図〜第６図によりその加工方法を説明する。 The processing method will be described with reference to FIGS.
成形ダイス１に粗形材４を挿入し、パンチ２にて加圧
すると、まずダイスのスプライン成形部５で粗形材の他
端側外周に複数の軸方向に延びる歯を有するスプライン
部の成形が始まり、パンチ２には突起があるために、同
時に粗形材の一端側のつば上部６にくぼみ７が成形され
る。この時はまだつば部８の据込み成形は第３図に示す
ように行われない。When the rough material 4 is inserted into the forming die 1 and pressurized by the punch 2, the spline forming section 5 of the die first forms a spline portion having a plurality of axially extending teeth on the outer periphery on the other end side of the rough material. Starts, and since the punch 2 has a projection, a recess 7 is simultaneously formed in the upper flange portion 6 on one end side of the rough material. At this time, upsetting of the collar portion 8 is not yet performed as shown in FIG.
更に成形が進むと、つば部８がダイス１に当たつてつ
ば部の据込み成形が第４図に示すように始まる。When the forming further proceeds, the upset forming of the brim portion starts as shown in FIG.
パンチ２には突起３があるため、この突起により材料
は第５図に示す様につばの方向10だけでなく、スプライ
ン軸11の方向にも引き続き材料が流れるため、つば部８
の成形終了時には充分な長さのスプライン軸９を得るこ
とが可能となる、これを第６図に示す。Since the punch 2 has the projection 3, the projection allows the material to flow not only in the direction of the collar 10 but also in the direction of the spline shaft 11 as shown in FIG.
It is possible to obtain a spline shaft 9 having a sufficient length at the end of the molding of the steel, which is shown in FIG.
ここで実験による、くぼみ深さとスプライン軸長さの
相関関係のデータを第７図に示す。（イ）は成形前の素
材の形状で、第２図に示すＡ寸法（Ａ＝30mm）はすべて
同じであり、粗形材を成形後のスプライン軸長さＢとく
ぼみ深さＣの測定結果を（ロ）に示す。FIG. 7 shows data on the correlation between the depth of the depression and the length of the spline shaft, obtained by experiments. (A) is the shape of the raw material before molding, the dimensions A (A = 30 mm) shown in Fig. 2 are all the same, and the measurement results of the spline shaft length B and the recess depth C after the coarse material is molded Is shown in (b).
（ロ）に示すスプライン軸長さとくぼみ深さの関係に
於いて、くぼみ深さ3mmでくぼみなしの時に比べてスプ
ライン軸は10mm伸びており、くぼみ深さ3mmでも充分ス
プライン軸方向の材料流れが得られることが分かる。In the relationship between the spline shaft length and the recess depth shown in (b), the spline shaft is 10 mm longer at the recess depth of 3 mm than when no recess is formed, and the material flow in the spline axis direction is sufficient even at the recess depth of 3 mm. It can be seen that it is obtained.
今回の対象品では、つば上部に深さ17.5mmの穴が必要
である形状の製品のため、突起をこの長さとして同時成
形し、ドリル加工も省略することができた。The target product this time requires a hole with a depth of 17.5 mm at the top of the brim, so the protrusions were formed simultaneously with this length and drilling could be omitted.
本発明は、次の効果を奏する。即ち、従来形状のパン
チによる粗形材の一端側でつばの据込みと、他端側外周
面での歯の押出しの同時成形は、歯の長さ（スプライン
部又は歯車部）が不充分であるため、充分な歯の軸長さ
（スプライン部の軸長さ又は歯車部の軸長さ）を得るた
めには、歯の前方押出し工程とつば部の据込み工程に分
けた２工程が必要であるが、本発明の成形方法によれ
ば、つば部を成形しつつ充分な歯の軸長さ（スプライン
部の軸長さ又は歯車部の軸長さ）を得られるために、２
回成形の必要がなく、大巾なコストダウンを図ることが
できる上に、歯の成形工程が最終工程となるため、従来
の様に歯の精度が次工程のつば部の据込み工程の影響を
うけることがない。また、本発明によれば、突起の大き
さを変えることによりくぼみの深さを任意に設定するこ
とによって、必要とする歯の軸方向長さ（スプライン部
の軸長さ又は歯車部の軸長さ）を任意に設定することが
できる。The present invention has the following effects. In other words, the simultaneous molding of the upsetting of the brim at one end side of the crude material by the conventional punch and the extrusion of the teeth at the outer peripheral surface at the other end side is insufficient in the tooth length (spline portion or gear portion). Therefore, in order to obtain a sufficient tooth shaft length (spline shaft length or gear shaft length), two processes are required: a front extrusion process of the teeth and an upsetting process of the collar. However, according to the forming method of the present invention, a sufficient tooth shaft length (shaft length of the spline portion or shaft length of the gear portion) can be obtained while forming the collar portion.
Since there is no need for round molding, a large cost reduction can be achieved, and the tooth molding process is the final process, so the accuracy of the teeth is affected by the next process of setting up the collar part as in the past. Will not be affected. Further, according to the present invention, by changing the size of the projection and arbitrarily setting the depth of the recess, the required axial length of the tooth (the axial length of the spline portion or the axial length of the gear portion) can be obtained. ) Can be set arbitrarily.
第１図は本実施例の型構造の説明図、第２図は成形前の
素材の外観図、第３図〜第６図は本実施による工程の説
明図、第７図の（イ）は成形前の素材を示し、（ロ）に
くぼみの深さとスプライン軸長さとの関係を示す図であ
る。第８図〜第10図は従来技術の説明図である。 ２……パンチ,3……突起， ８……つば,9……スプライン軸。FIG. 1 is an explanatory view of a mold structure of the present embodiment, FIG. 2 is an external view of a material before molding, FIGS. 3 to 6 are explanatory views of steps according to the present embodiment, and FIG. It is a figure which shows the raw material before shaping | molding, and shows the relationship between the depth of a hollow and the spline shaft length in (b). 8 to 10 are explanatory diagrams of the prior art. 2 ... Punch, 3 ... Protrusion, 8 ... Brim, 9 ... Spline shaft.
Claims (1)
ばを裾込み成形すると同時に他端外周に軸方向に延びる
複数の歯を押出し成形するつば付軸の成形方法におい
て、前記パンチの先端に突起を設け、前記パンチの先端
に対向する前記つばの端面にくぼみを成形することによ
り、粗形材の他端方向への材料流動を喚起して、前記つ
ばへの材料流動との分流を発生させ、つば成形と同時に
所定長さの前記歯を成形することを特徴とする、つば付
軸の成形方法1. A method for forming a collar with a collar, comprising forming a collar at one end using a molding die and a punch, and simultaneously extruding a plurality of teeth extending in the axial direction on the outer periphery of the other end. By providing a projection and forming a recess in the end face of the collar facing the tip of the punch, a material flow in the other end direction of the coarse material is aroused, and a branch flow from the material flow to the collar is generated. And forming the teeth having a predetermined length at the same time as the forming of the brim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63020246A JP2658119B2 (en) | 1988-01-29 | 1988-01-29 | Forming method for shaft with collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63020246A JP2658119B2 (en) | 1988-01-29 | 1988-01-29 | Forming method for shaft with collar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01197038A JPH01197038A (en) | 1989-08-08 |
| JP2658119B2 true JP2658119B2 (en) | 1997-09-30 |
Family
ID=12021837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63020246A Expired - Fee Related JP2658119B2 (en) | 1988-01-29 | 1988-01-29 | Forming method for shaft with collar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2658119B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4862794B2 (en) * | 2007-09-26 | 2012-01-25 | アイシン・エィ・ダブリュ株式会社 | Spline member manufacturing method |
| JP2010253497A (en) * | 2009-04-23 | 2010-11-11 | Aida Eng Ltd | Method and apparatus for forming member having hollow boss part and flange part |
| JP6071186B2 (en) * | 2011-11-09 | 2017-02-01 | 高周波熱錬株式会社 | Shaft enlargement processing method using shaft enlargement processing equipment |
| RU2484913C1 (en) * | 2011-12-28 | 2013-06-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный технологический университет "СТАНКИН" (ФГБОУ ВПО МГТУ "СТАНКИН") | Method of making rod elements with lengthwise ribs from aluminium alloys |
| CN102699261B (en) * | 2012-06-08 | 2015-06-03 | 上海纳铁福传动***有限公司 | Method for forging central hole of spline shaft forging |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS588931B2 (en) * | 1973-12-05 | 1983-02-18 | アイコク工業 （株） | Cold forming method for spline shaft |
| JPS5650743A (en) * | 1979-09-29 | 1981-05-08 | Mitsubishi Heavy Ind Ltd | Method and device of forming shaft with center hole |
| JPS58184033A (en) * | 1982-04-22 | 1983-10-27 | Nippon Denso Co Ltd | Manufacture of flanged shaft |
| JPS60102245A (en) * | 1983-11-09 | 1985-06-06 | Musashi Seimitsu Kogyo Kk | Spline forging forming die of split crank shaft |
-
1988
- 1988-01-29 JP JP63020246A patent/JP2658119B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01197038A (en) | 1989-08-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |