JPH0618667Y2 - Spline molding equipment - Google Patents
Spline molding equipmentInfo
- Publication number
- JPH0618667Y2 JPH0618667Y2 JP16804788U JP16804788U JPH0618667Y2 JP H0618667 Y2 JPH0618667 Y2 JP H0618667Y2 JP 16804788 U JP16804788 U JP 16804788U JP 16804788 U JP16804788 U JP 16804788U JP H0618667 Y2 JPH0618667 Y2 JP H0618667Y2
- Authority
- JP
- Japan
- Prior art keywords
- spline
- tooth
- tooth surface
- forming part
- cylindrical body
- 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
Landscapes
- Forging (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） この考案は、クラッチドラムやベルトプーリ等のスプラ
イン成形に用いる装置の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of an apparatus used for spline molding such as a clutch drum and a belt pulley.
（従来技術） 自動変速機内に設けられるクラッチドラム類は軽量化並
びに生産性向上を図るべく、近年において、板金を素材
にしてプレス技術や鍛造技術を利用されつつある。(Prior Art) Clutch drums provided in an automatic transmission have recently been used for press technology and forging technology using sheet metal as a raw material in order to reduce weight and improve productivity.
これらの成形装置のうち、従来、円筒体の周壁部に多数
のスプラインをパンチとダイスを用いてしごき成形によ
り同時に得る技術が知られている。Among these forming apparatuses, conventionally, a technique is known in which a large number of splines are simultaneously obtained by ironing using a punch and a die on a peripheral wall portion of a cylindrical body.
これは、外歯を有するパンチと、内歯を有するダイスと
を備え、ダイスの内歯が、歯巾、高さとも軸方向に漸次
大きくした斜面状の歯面および歯底部と、円筒体の周壁
部のスプラインの歯先を成形すべく内歯歯底部と、円筒
体の周壁部のスプラインの歯先を成形すべく内歯歯底を
斜面を介してより小径にした歯先成形部とからなるもの
であった（特開昭５９−４２１４７号公報参照）。This includes a punch having external teeth, and a die having internal teeth, and the internal teeth of the die have beveled tooth surfaces and tooth bottoms whose axial width and height are gradually increased, and a cylindrical body. From the inner tooth bottom part to form the spline tip of the peripheral wall part and the inner tooth bottom part with a smaller diameter through the slope to form the spline tip of the peripheral wall part of the cylindrical body. (See JP-A-59-42147).
（考案が解決しようとする問題点） この従来技術は、歯面を成形した後に歯底を圧縮成形し
てスプライン成形を完了させるものであり、特にスプラ
インの歯先のコーナをしごき成形する過程で圧縮荷重が
生じるがめ、摺動抵抗が大きく、その前に成形された歯
面に引張り荷重が過大に作用し歯面にヒケ現象が生じ、
微妙にうねった面となり、クラッチドラムのようにクラ
ッチプレートの歯と係合する面となる場合、クラッチプ
レートの円周上の均等な係合ができず、局部当りとなり
耐久性が劣るという問題が生じる。(Problems to be solved by the invention) This prior art is to complete the spline molding by compressing the tooth bottom after molding the tooth surface, and especially in the process of ironing the corners of the tips of the splines. Although a compressive load is generated, the sliding resistance is large, the tensile load acts excessively on the tooth surface molded before that, and the sink phenomenon occurs on the tooth surface.
If the surface is slightly wavy and engages with the teeth of the clutch plate like a clutch drum, the clutch plate cannot be evenly engaged on the circumference, resulting in local contact and poor durability. Occurs.
（考案の目的） この考案は、上記の問題点に着目してなされたもので、
歯面のヒケの生じないパンチとダイスとからなるスプラ
イン成形装置を提供することを目的とする。(Purpose of Invention) This invention was made by focusing on the above problems,
An object of the present invention is to provide a spline forming device including a punch and a die that do not cause sink marks on the tooth surface.
（考案の目的） この考案は、上記の問題点に着目してなされたもので、
歯面にヒケの生じないパンチとダイスとからなるスプラ
イン成形装置を提供することを目的とする。(Purpose of Invention) This invention was made by focusing on the above problems,
An object of the present invention is to provide a spline forming device including a punch and a die that do not cause sink marks on the tooth surface.
（考案の構成） この考案の特徴は、パンチに対するダイスとして、円筒
体が挿入される開口側から、スプライン荒歯面成形部、
スプライン歯先成形部、スプライン歯面仕上成形部を順
次有するものとする点にある。(Structure of the Invention) The feature of the present invention is that, as a die for the punch, from the opening side where the cylindrical body is inserted, to the spline rough tooth surface forming portion,
This is to have a spline tooth tip forming part and a spline tooth surface finishing forming part in that order.
（実施例） 以下、一実施例を図面に基づいて説明する。(Example) Hereinafter, an example will be described with reference to the drawings.
第１図および第２図において、１はパンチであり、２は
ダイスを示す。３はクッションピン４に支持された円筒
体受けである。ワークである円筒体Ｗは前もってカップ
形に絞り成形されたものである。1 and 2, 1 is a punch and 2 is a die. Reference numeral 3 is a cylindrical body receiver supported by the cushion pin 4. The cylindrical body W, which is a workpiece, has been previously drawn into a cup shape.
上記パンチ１は外周に外歯１ａを多数有し、この外歯１
ａは歯筋方向に一定の形状となっている。The punch 1 has a large number of external teeth 1a on its outer periphery.
a has a constant shape in the tooth trace direction.
一方、ダイス２は円筒体Ｗの挿入開口５側から、案内部
６、スプライン歯面荒成形部７、スプライン歯先仕上成
形部８、スプライン歯面仕上成形部９を順次有してい
る。On the other hand, the die 2 has a guide portion 6, a spline tooth surface rough forming portion 7, a spline tooth tip finish forming portion 8, and a spline tooth surface finish forming portion 9 in this order from the insertion opening 5 side of the cylindrical body W.
案内部６は、円筒体Ｗの外径より若干大径の内周面６ａ
を有している。The guide portion 6 has an inner peripheral surface 6a having a diameter slightly larger than the outer diameter of the cylindrical body W.
have.
スプライン歯面荒成形部７、スプライン歯先仕上成形部
８並びにスプライン歯面仕上成形部９はその全領域にわ
たりパンチ１の外歯１ａ，１ａの間に位置する内歯Ａが
スプライン状に形成されている。The spline tooth surface rough forming portion 7, the spline tooth surface finishing forming portion 8 and the spline tooth surface finishing forming portion 9 are formed in a spline shape with the internal teeth A located between the outer teeth 1a and 1a of the punch 1 over the entire area thereof. ing.
より詳細に説明すれば、スプライン歯面荒成形部７は後
述するスプライン歯面成形部９の歯巾より小さい歯巾の
歯面７ｂと、内歯Ａの高さが漸次高くなった斜面状の歯
先７ａとで形成され、その歯先７ｂの高さは円筒体Ｗの
スプライン歯の歯底Ｗ２を成形するものに設定されてい
る。（第３図参照）。More specifically, the spline tooth surface rough forming portion 7 has a tooth surface 7b having a tooth width smaller than the tooth width of the spline tooth surface forming portion 9 to be described later, and an inclined surface shape in which the height of the internal teeth A is gradually increased. It is formed by the addendum 7a, the height of the tooth tip 7b are set to those for molding the tooth bottom W 2 of the spline teeth of the cylindrical body W. (See Figure 3).
スプライン歯先仕上成形部８は、内歯Ａの歯先８ａの高
さが上記歯先７ａの最後尾高さと変化はしてないが、内
歯Ａの歯底８Ｃが漸次小径に変化する斜面として形成さ
れたものとなっている。The spline tooth tip finish forming part 8 is a slope in which the height of the tooth tip 8a of the internal tooth A does not change from the height of the rear end of the tooth tip 7a, but the tooth bottom 8C of the internal tooth A gradually changes to a small diameter. It has been formed.
スプライン歯面仕上成形部９はその歯先９ａ並びに歯底
９Ｃが上記歯先仕上成形部８の歯先８ａの高さ並びに歯
低８ｂの高さと変化してはいないが、歯面９ｂが歯巾を
漸次厚くすべく斜面に形成されている。Although the tooth tip 9a and the tooth bottom 9C of the spline tooth surface finish molding portion 9 are not changed from the height of the tooth top 8a and the height of the tooth low 8b of the tooth tip finishing molding portion 8, the tooth surface 9b is The slope is formed to gradually increase the width.
なお、１０は上記歯面仕上成形部９の最終形状に形成さ
れた延長部である。Reference numeral 10 is an extension portion formed in the final shape of the tooth surface finish forming portion 9.
次に、この装置を用いたスプライン成形の過程を説明す
る。Next, the process of spline molding using this apparatus will be described.
まず。第１図に示すように、円筒体Ｗをダイス２の開口
５内の円筒体受け３上に載せて、パンチ１を下降させる
と、パンチ１と円筒体受け３とで挟持された円筒体Ｗは
スプライン歯面荒成形部７の歯先７ａ、歯面７ｂにてそ
の周壁部Ｗ１に歯底Ｗ２をしごき成形される。First. As shown in FIG. 1, when the cylindrical body W is placed on the cylindrical body receiver 3 in the opening 5 of the die 2 and the punch 1 is lowered, the cylindrical body W sandwiched between the punch 1 and the cylindrical body receiver 3 is placed. It is molded peristaltic tooth bottom W 2 at its peripheral wall W 1 addendum 7a of the spline tooth surface rough forming unit 7, at the tooth surface 7b.
その後、円筒体Ｗは下降され、引続きスプライン歯先仕
上成形部８にて歯先Ｗ３を設定外径寸法にしごき成形さ
れる。After that, the cylindrical body W is lowered, and subsequently, the spline tooth tip finishing forming portion 8 is ironed and formed with the tooth tip W 3 having a set outer diameter dimension.
この際、円筒体Ｗの歯先Ｗ３はパンチ１の外歯１ａを受
け面としながら、歯先仕上成形部８の斜面状の歯底８Ｃ
にて半径方向内方に押圧され、パンチ１の外歯１ａとの
間で挟圧されながらしごき成形される。この結果、円筒
体Ｗの歯先Ｗ３の成形負荷が過大となり、荒成形されて
いる歯面Ｗ４に引張り荷重が作用してヒケ現象が生じる
が、この実施例では、上記歯先仕上成形部８に続くスプ
ライン歯面仕上成形部９にてそのヒケ現象を解消する。At this time, the tooth tip W 3 of the cylindrical body W serves as a receiving surface for the outer tooth 1 a of the punch 1, while the beveled tooth bottom 8 C of the tooth tip finishing molding portion 8 is formed.
Is pressed inward in the radial direction and is ironed while being pressed against the outer teeth 1a of the punch 1. As a result, the forming load on the addendum W 3 of the cylindrical body W becomes excessively large, and a tensile load acts on the tooth surface W 4 that is roughly formed, causing a sink phenomenon. In this embodiment, however, the above addendum finish forming is performed. At the spline tooth surface finishing forming portion 9 following the portion 8, the sink phenomenon is eliminated.
円筒体Ｗの歯面Ｗ４は、歯面仕上成形部９の斜面状の歯
面９ｂにより歯厚方向に押圧され、パンチ１の外歯１ａ
との間で挟圧され、ヒケの矯正された歯面Ｗ４に成形さ
れる。The tooth surface W 4 of the cylindrical body W is pressed in the tooth thickness direction by the beveled tooth surface 9 b of the tooth surface finish forming portion 9, and the outer tooth 1 a of the punch 1 is pressed.
Is nipped between, it is molded to the tooth surface W 4 which is corrected for shrinkage.
円筒体Ｗはダイス２の延長部１０まで下降されたのち、
パンチ１の上昇とクッションピン４の上昇とにより持上
けられ、１回の作業が完了する。After the cylindrical body W is lowered to the extension 10 of the die 2,
The punch 1 is lifted and the cushion pin 4 is lifted, and the work is completed once.
（考案の効果） この考案によれば、円筒体の周壁部にスプラインの歯面
のヒケをなくして精度の高い面形状を成形することがで
きる。(Effect of the Invention) According to the present invention, it is possible to form a highly accurate surface shape on the peripheral wall portion of the cylindrical body by eliminating the sink mark on the tooth surface of the spline.
図面はこの考案の１実施例を示し、第１図はパンチとダ
イスの要部断面図，第２図はダイスの要部拡開図，第３
図は成形品の斜視図である。 １……パンチ，１ａ……外歯，２……ダイス，Ａ……内
歯，７……スプライン歯面荒成形部，８……スプライン
歯先仕上成形部，９……スプライン歯面仕上成形部The drawing shows one embodiment of the present invention. Fig. 1 is a sectional view of the essential parts of the punch and die, Fig. 2 is an enlarged view of the essential parts of the die, and Fig. 3
The figure is a perspective view of a molded product. 1 ... Punch, 1a ... External tooth, 2 ... Die, A ... Internal tooth, 7 ... Spline tooth surface rough forming section, 8 ... Spline tooth tip finishing forming section, 9 ... Spline tooth surface finishing forming section Department
Claims (1)
との相対的な挿通動作により板金製の円筒体の周壁部に
歯形状のスプラインをしごき成形するスプライン成形装
置において、 上記パンチの外歯はその軸方向に不変な歯形を有する一
方、ダイスは円筒体の挿入開口側からスプライン歯面荒
成形部、スプライン歯先仕上成形部、スプライン歯面仕
上成形部を順次有しており、上記スプライン歯先仕上成
形部はスプライン歯面荒成形部の歯底より小径の歯底に
形成され、スプライン歯面仕上げ成形部はスプライン歯
面荒成形部の歯巾より大きな歯巾に形成されていること
を特徴とするスプライン成形装置。1. A spline molding device for ironing a tooth-shaped spline on a peripheral wall of a sheet metal cylinder by a relative insertion operation between a punch having external teeth and a die having internal teeth. The tooth has an invariant tooth profile in its axial direction, while the die has a spline tooth surface rough forming part, a spline tooth tip finishing forming part, and a spline tooth surface finishing forming part in order from the insertion opening side of the cylindrical body. The spline tooth tip finish forming part is formed on the bottom of the spline tooth surface rough forming part with a diameter smaller than that of the root, and the spline tooth surface finishing forming part is formed with a larger width than the spline tooth surface rough forming part. A spline molding device characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16804788U JPH0618667Y2 (en) | 1988-12-26 | 1988-12-26 | Spline molding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16804788U JPH0618667Y2 (en) | 1988-12-26 | 1988-12-26 | Spline molding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0287530U JPH0287530U (en) | 1990-07-11 |
| JPH0618667Y2 true JPH0618667Y2 (en) | 1994-05-18 |
Family
ID=31456882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16804788U Expired - Lifetime JPH0618667Y2 (en) | 1988-12-26 | 1988-12-26 | Spline molding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0618667Y2 (en) |
-
1988
- 1988-12-26 JP JP16804788U patent/JPH0618667Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0287530U (en) | 1990-07-11 |
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