JP2552301B2 - Spline molding method - Google Patents
Spline molding methodInfo
- Publication number
- JP2552301B2 JP2552301B2 JP62169110A JP16911087A JP2552301B2 JP 2552301 B2 JP2552301 B2 JP 2552301B2 JP 62169110 A JP62169110 A JP 62169110A JP 16911087 A JP16911087 A JP 16911087A JP 2552301 B2 JP2552301 B2 JP 2552301B2
- Authority
- JP
- Japan
- Prior art keywords
- rim portion
- spline
- cylindrical body
- base end
- ironing
- 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
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、基板とリム部とからなる円筒状体のリム部
にスプライン歯をしごき成形して歯車もしくはタイミン
グプーリ等を形成するスプライン成形方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a spline molding method for forming a gear or a timing pulley by ironing spline teeth on a rim portion of a cylindrical body composed of a substrate and a rim portion. It is about.
（従来技術） 従来から、基板とその外周部に形成されたリム部とを
有する円筒状体をパンチによりダイス内に圧入し、ダイ
スの内周面に形成された成形歯に対応した形状のスプラ
イン歯を上記リム部にしごき成形することが行なわれて
いる。(Prior Art) Conventionally, a cylindrical body having a substrate and a rim portion formed on the outer peripheral portion thereof is press-fitted into a die by a punch, and a spline having a shape corresponding to a molding tooth formed on the inner peripheral surface of the die. Ironing is performed on the rim portion with teeth.
例えば、特開昭59−42147号公報に示されるように、
深絞り成形によって有底円筒状の半製品を形成し、この
半製品を成形ダイス内に圧入してリム部にスプライン歯
をしごき成形することにより、一回の成形加工で所定形
状のタイミングプーリ等を形成するようにしたものがあ
る。しかし、上記のように、円筒状半製品のリム部に一
回のしごき成形によってスプライン歯を形成するように
構成した場合には、上記リム部の基端部に荷重が集中す
るため、「だれ」や「ばり」等の成形不良が発生し易い
とともに、しごきの成形時の摩擦熱によって上記基端部
がダイスに焼付くおそれがあるという問題があった。For example, as shown in JP-A-59-42147,
A cylindrical semi-finished product with a bottom is formed by deep drawing, and this semi-finished product is press-fitted into the molding die and the spline teeth are ironed on the rim to form a timing pulley with a predetermined shape in one molding process. There is one that is formed. However, as described above, in the case where the spline teeth are formed on the rim portion of the cylindrical semi-finished product by one-time ironing, the load is concentrated on the base end portion of the rim portion. There is a problem that molding defects such as ",""burrs" and the like are likely to occur and that the base end portion may be seized on the die due to frictional heat during molding of ironing.
また、上記焼付き等を防止するためにスプライン歯の
しごき成形を荒加工工程と仕上加工工程とに分けること
も行なわれているが、この場合においても上記荒加工も
しくは仕上加工のいずれかの工程で上記リム部の基端部
がダイスに焼付くおそれがあるとともに、しごき成形用
の２種以上のダイスが必要であるために成形装置の構造
が複雑になるという問題があった。Further, in order to prevent the seizure and the like, ironing of the spline teeth is also divided into a roughing process and a finishing process. In this case, either the roughing process or the finishing process is performed. However, there is a problem that the base end of the rim portion may be seized on the die, and the structure of the molding apparatus becomes complicated because two or more types of dies for ironing molding are required.
（発明の目的） 本発明は、上記問題点を解決するためになされたもの
であり、リム部の基端部に成形不良が発生したり、上記
基端部がダイスに焼付いたりすることなく、一回のしご
き成形によってリム部にスプライン歯を形成することが
できるスプライン成形方法を提供するものである。(Object of the invention) The present invention has been made to solve the above problems, without causing molding defects in the base end portion of the rim portion, or the base end portion without seizing in a die, It is intended to provide a spline molding method capable of forming spline teeth on a rim portion by a single ironing process.
（発明の構成） 本発明は、円板状素材を基板とリム部とからなる円筒
状体に絞り成形した後、上記リム部にスプライン歯をし
ごき成形するスプライン成形方法において、上記円筒状
体の絞り成形時もしくは絞り成形後に、上記リム部の基
端部にスプライン歯の歯溝部に対応する凹部を一定の間
隔で形成し、その後に上記円筒状体をその基端部側から
ダイス内に圧入してリム部にスプライン歯をしごき成形
するようにしたものである。(Structure of the Invention) The present invention is a spline molding method in which a disc-shaped material is drawn into a cylindrical body composed of a substrate and a rim portion, and then a spline tooth is formed by ironing the rim portion. During or after draw forming, recesses corresponding to the tooth groove portions of the spline teeth are formed at regular intervals at the base end of the rim portion, and then the cylindrical body is press-fitted into the die from the base end side. Then, the spline teeth are ironed and formed on the rim portion.
上記の構成によれば、スプライン歯の歯溝部に対応し
た凹部がリム部の基端部に形成された円筒状体を成形ダ
イス内に圧入することにより、スプライン歯のしごき成
形が行なわれるため、このしごき成形時に上記リム部の
基端部に荷重が集中して作用することが防止される。According to the above configuration, by pressing the cylindrical body having the concave portion corresponding to the tooth groove portion of the spline tooth at the base end portion of the rim portion into the molding die, the ironing of the spline tooth is performed, It is possible to prevent the load from being concentrated and acting on the base end portion of the rim portion during the ironing.
（実施例） 第１図は、鋼板材等からなる円板状素材１を有底円筒
状に絞り成形する深絞り成形装置を示している。この深
絞り成形装置は、上記円板状素材１が載置されるパンチ
２を備えた下型３と、図外の駆動機構によって昇降駆動
される上型４とを有し、この上型４を第２図に示すよう
に下降させ、円板状素材１の外周部を上型４のダイス５
で押下げることにより、基板６とリム部７とからなる円
筒状体８を絞り成形するように構成されている。上記パ
ンチ２の先端部外周には下窄まりの凹部９が所定間隔で
形成されるとともに、上記ダイス５の基端部内周には上
記凹部９に対応した突部10が形成され、上記絞り成形の
最終段階において円筒状体８の上端周辺部を外方から押
圧してパンチ２の凹部９に圧接させることにより、第３
図に示すようにリム部７の基端部にスプライン歯の歯溝
部に対応した状の凹部11を一定の間隔で形成するように
なっている。(Example) FIG. 1 shows a deep drawing apparatus for drawing a disk-shaped material 1 made of a steel plate material into a cylindrical shape with a bottom. The deep drawing apparatus has a lower die 3 having a punch 2 on which the disc-shaped material 1 is placed, and an upper die 4 which is driven up and down by a drive mechanism (not shown). As shown in FIG. 2, lower the outer peripheral portion of the disc-shaped material 1 into the die 5 of the upper die 4.
By pressing down with, the cylindrical body 8 composed of the substrate 6 and the rim portion 7 is formed by drawing. The punch 2 is formed with recessed recesses 9 at predetermined intervals on the outer periphery of the tip end thereof, and a protrusion 10 corresponding to the recess 9 is formed on the inner periphery of the base end of the die 5, thereby forming the draw. In the final stage of step 3, the peripheral portion of the upper end of the cylindrical body 8 is pressed from the outside to be pressed against the concave portion 9 of the punch 2, thereby
As shown in the figure, recesses 11 having a shape corresponding to the tooth space of the spline teeth are formed at the base end of the rim portion 7 at regular intervals.
第４図は、上記深絞り成形装置によって成形した円筒
状体８のリム部７にスプライン歯をしごき成形するしご
き絞り成形装置を示している。このしごき絞り成形装置
は、上記円筒状体８の基板６を上下から挟持するパンチ
12およびホルダー13と、円筒状体８のリム部７が圧入さ
れるダイス14とを備えている。上記パンチ12は第５図に
示すように、円筒状体８のリム部７を外嵌し得る大きさ
に形成され、かつパンチ12の外周面にはスプライン歯の
歯溝部に対応した凹溝15が一定の間隔で形成されてい
る。FIG. 4 shows an ironing and drawing apparatus for ironing spline teeth on the rim portion 7 of the cylindrical body 8 formed by the deep drawing apparatus. This ironing draw forming apparatus is a punch for sandwiching the substrate 6 of the cylindrical body 8 from above and below.
12 and a holder 13, and a die 14 into which the rim portion 7 of the cylindrical body 8 is press fitted. As shown in FIG. 5, the punch 12 is formed in such a size that the rim portion 7 of the cylindrical body 8 can be externally fitted, and the outer peripheral surface of the punch 12 has a groove 15 corresponding to the tooth groove portion of the spline tooth. Are formed at regular intervals.
また、上記ダイス14は、内径が円筒状体８のリム部７
を嵌入し得る大きさに設定された筒体からなり、その内
周面にはスプライン歯の歯溝部に対応させて上記リム部
７を予備加工するテーパ状の膨出部16と、その下端部に
連続する歯溝部形成用の突条17とが第６図に示すよう
に、上記パンチ12の凹溝15に対応した位置に一定の間隔
で形成されている。In addition, the die 14 has a rim portion 7 of the cylindrical body 8 having an inner diameter.
And a lower end portion of the cylindrical body having a tapered shape for preliminarily processing the rim portion 7 corresponding to the tooth groove portion of the spline tooth on the inner peripheral surface thereof. As shown in FIG. 6, a continuous ridge 17 for forming a tooth groove portion is formed at a constant interval at a position corresponding to the concave groove 15 of the punch 12.
以上のように構成された装置を用いて本発明のスプラ
イン成形方法を実施するには、まず円筒状素材１を深絞
り成形装置により絞り成形して基板６とリム部７とから
なる円筒状体８を形成するとともに、上記リム部７の基
端部にスプライン歯の歯溝部に対応した形状の凹部11を
一定の間隔で形成する。その後、上記円筒状体８の基板
６をしごき絞り成形装置のパンチ12とホルダー13とによ
って挟持した状態でパンチ12を押下げ、円筒状体８を基
板６側からダイス14内に圧入する。この結果、上記リム
部７の基端部に形成された凹部11に連続する部分が、ダ
イス14の膨出部16および突条17により内方に押圧されて
パンチ12の凹溝15に圧接されつつ所定形状のスプライン
歯がしごき成形される。In order to carry out the spline forming method of the present invention using the apparatus configured as described above, first, the cylindrical material 1 is drawn by a deep drawing apparatus to form a cylindrical body composed of the substrate 6 and the rim portion 7. 8 is formed, and concave portions 11 having a shape corresponding to the tooth groove portion of the spline tooth are formed in the base end portion of the rim portion 7 at regular intervals. After that, the punch 12 is pushed down while the substrate 6 of the cylindrical body 8 is sandwiched by the punch 12 and the holder 13 of the ironing and drawing apparatus, and the cylindrical body 8 is pressed into the die 14 from the substrate 6 side. As a result, a portion of the rim portion 7 which is continuous with the concave portion 11 formed at the base end portion is pressed inward by the bulging portion 16 and the ridge 17 of the die 14 and pressed against the concave groove 15 of the punch 12. Meanwhile, the spline teeth having a predetermined shape are formed by ironing.
このように円筒状体８の絞り成形時にリム部７の基端
部にスプライン歯の歯溝部に対応した凹部11を形成した
後、上記円筒状体８をダイス14内に圧入して上記リム部
７にスプライン歯をしごき成形するように構成したた
め、上記リム部７の基端部に集中荷重が作用するのを防
止して一回のしごき成形により、所定形状のスプライン
歯を適正に形成することができる。In this way, when the cylindrical body 8 is formed by drawing, the concave portion 11 corresponding to the tooth groove portion of the spline tooth is formed at the base end portion of the rim portion 7, and then the cylindrical body 8 is press-fitted into the die 14 to form the rim portion. Since the spline teeth are configured to be ironed in FIG. 7, it is possible to prevent the concentrated load from acting on the base end portion of the rim portion 7 and appropriately form the spline teeth of a predetermined shape by performing the ironing once. You can
すなわち、上記リム部７の基端部は基板６の存在によ
って径方向の剛性が極めて高くなっている。このため、
一回のしごき成形によりリム部７の全長に亘ってスプラ
イン歯の歯溝部を形成しようとした場合には、上記リム
部７の基端部に大きな変形抵抗が発生し、この部分に応
力が集中して「だれ」等の成形不良が生じ易いととも
に、しごき成形時の摩擦熱によって上記基端部がダイス
14の内周面に焼付くおそれがある。これに対して上記の
ように、リム部７の基端部にスプライン歯の歯溝部に対
応する凹部11を予め形成した場合には、上記しごき成形
時に大きな成形抵抗が生じるのを防止することができ
る。したがって、上記「ばり」等の成形不良や焼付き等
を生じることなく、スプライン歯を一回のしごき成形に
より容易かつ正確に形成することができる。That is, the base end of the rim portion 7 has extremely high radial rigidity due to the presence of the substrate 6. For this reason,
When the tooth groove portion of the spline tooth is to be formed over the entire length of the rim portion 7 by one-time ironing, a large deformation resistance is generated at the base end portion of the rim portion 7, and stress is concentrated on this portion. As a result, molding defects such as "drip" are likely to occur, and the above-mentioned base end part is dies due to frictional heat during ironing.
The inner surface of 14 may be burnt. On the other hand, as described above, when the recessed portion 11 corresponding to the tooth groove portion of the spline tooth is previously formed in the base end portion of the rim portion 7, it is possible to prevent a large forming resistance from occurring during the ironing forming. it can. Therefore, the spline teeth can be easily and accurately formed by one-time ironing without causing molding defects such as the above-mentioned "burrs" or seizure.
なお、上記凹部11は、必ずしも円筒状体８の絞り成形
と同時に形成する必要はなく、円筒状素材１から円筒状
体８を形成した後、そのリム部７の基端部に凹部11を別
工程で形成するように構成してもよい。The recess 11 does not necessarily have to be formed at the same time as the drawing of the cylindrical body 8 is performed. After the cylindrical body 8 is formed from the cylindrical material 1, the recess 11 is separately formed at the base end of the rim portion 7. You may comprise so that it may be formed in a process.
（発明の効果） 以上説明したように本発明は、円板状素材から円筒状
体への絞り成形時もしくは絞り成形後に、円筒状体のリ
ム部の基端部にスプライン歯の歯溝部に対応する凹部を
所定の間隔で形成し、その後に上記リム部にスプライン
歯をしごき成形するように構成したため、上記しごき成
形時にリム部の基端部に荷重が集中して作用するのを防
止することができる。したがって、上記基端部に「だ
れ」や「ばり」等の成形不良が発生するのを防止できる
とともに、上記基端部がダイスに焼付くのを効果的に防
止することができ、しかも一回のしごき成形により所定
形状のスプライン歯を容易かつ正確に形成することがで
きる。(Effect of the Invention) As described above, the present invention corresponds to the tooth groove portion of the spline tooth at the base end portion of the rim portion of the cylindrical body at the time of draw forming from the disc-shaped material into the cylindrical body or after the draw forming. Since the recesses to be formed are formed at predetermined intervals and then the spline teeth are ironed and formed on the rim portion, it is possible to prevent the load from being concentrated and acting on the base end portion of the rim portion during the ironing and forming. You can Therefore, it is possible to prevent the occurrence of molding defects such as "sag" and "burr" in the base end portion, and it is possible to effectively prevent the base end portion from being seized on the die, and moreover, once. It is possible to easily and accurately form the spline teeth having a predetermined shape by ironing.
第１図は本発明を実施するために使用する深絞り成形装
置の実施例を示す断面図、第２図は円筒状体の成形状態
を示す断面図、第３図は円筒状体の構成を示す斜視図、
第４図はしごき絞り成形装置の実施例を示す断面図、第
５図および第６図は第４図のＶ−Ｖ線断面図およびVI−
VI線断面図である。 １……円板状素材、６……基板、７……リム部、８……
円筒状体、11……凹部、14……ダイス。FIG. 1 is a sectional view showing an embodiment of a deep drawing forming apparatus used for carrying out the present invention, FIG. 2 is a sectional view showing a forming state of a cylindrical body, and FIG. 3 is a constitution of the cylindrical body. Perspective view,
FIG. 4 is a sectional view showing an embodiment of the ironing and drawing apparatus, FIGS. 5 and 6 are sectional views taken along the line V-V and VI- of FIG.
FIG. 6 is a sectional view taken along line VI. 1 ... Disc-shaped material, 6 ... Substrate, 7 ... Rim part, 8 ...
Cylindrical body, 11 …… recess, 14 …… die.
Claims (1)
状体に絞り成形した後、上記リム部にスプライン歯をし
ごき成形するスプライン成形方法において、上記円筒状
体の絞り成形時もしくは絞り成形後に、上記リム部の基
端部にスプライン歯の歯溝部に対応する凹部を一定の間
隔で形成し、その後に上記円筒状体をその基端部側から
ダイス内に圧入してリム部にスプライン歯をしごき成形
するようにしたことを特徴とするスプライン成形方法。1. A spline molding method in which a disc-shaped material is drawn into a cylindrical body composed of a substrate and a rim portion, and then spline teeth are ironed in the rim portion. After drawing, the recesses corresponding to the groove portions of the spline teeth are formed in the base end portion of the rim portion at regular intervals, and then the cylindrical body is press-fitted into the die from the base end portion side of the rim portion. A spline forming method, characterized in that the spline teeth are formed by ironing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62169110A JP2552301B2 (en) | 1987-07-06 | 1987-07-06 | Spline molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62169110A JP2552301B2 (en) | 1987-07-06 | 1987-07-06 | Spline molding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6415233A JPS6415233A (en) | 1989-01-19 |
| JP2552301B2 true JP2552301B2 (en) | 1996-11-13 |
Family
ID=15880485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62169110A Expired - Lifetime JP2552301B2 (en) | 1987-07-06 | 1987-07-06 | Spline molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2552301B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5176021A (en) * | 1989-10-26 | 1993-01-05 | Grundfos International A/S | Method and apparatus for making shaped metal parts by forming sheet metal |
| RU2581002C2 (en) | 2010-07-22 | 2016-04-10 | К-Фее Зюстем Гмбх | Portioned capsule with identifier |
-
1987
- 1987-07-06 JP JP62169110A patent/JP2552301B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6415233A (en) | 1989-01-19 |
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