JP2006116593A - Method and apparatus for forming cup-shaped part - Google Patents

Method and apparatus for forming cup-shaped part Download PDF

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JP2006116593A
JP2006116593A JP2004309864A JP2004309864A JP2006116593A JP 2006116593 A JP2006116593 A JP 2006116593A JP 2004309864 A JP2004309864 A JP 2004309864A JP 2004309864 A JP2004309864 A JP 2004309864A JP 2006116593 A JP2006116593 A JP 2006116593A
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punch
side wall
hole
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ironing
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JP4492296B2 (en
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Takuya Oura
卓也 大浦
Yoichi Fukui
陽一 福井
Daisuke Iwata
大助 岩田
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Aisin AW Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a forming method and a forming apparatus of cup-shaped parts, by which the miniaturization of equipment is realized and lowering of strength in a corner part formed by a bottom surface part and a side wall part is prevented. <P>SOLUTION: When forming the cup-shaped parts 8, a die, a first punch, a drawing punch sleeve and a second punch are prepared and a drawing hole part, a reduced tube forming hole part and an ironing hole part are beforehand formed in the forming hole of the die. A preliminary side wall part 82A which is annularly erected is formed by holding a plate-shaped work 80 between the first punch and the second punch and performing drawing to the work 80 with the drawing punch sleeve and the drawing hole part. Next, reduced tube side-wall part 82B is formed by applying tube reduction forming to the preliminary wall part 82A with the first punch and the reduced tube forming hole part. After that, the cup-shaped parts 8 are obtained by forming the side wall part 82 by applying ironing to the reduced tube side-wall part 82B by the first punch and the ironing hole part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、底面部と、底面部の外周端部から軸方向へ立設した環状の側壁部とを有するカップ状部品の成形方法及び成形装置に関する。   The present invention relates to a molding method and a molding apparatus for a cup-shaped part having a bottom surface portion and an annular side wall portion erected in the axial direction from an outer peripheral end portion of the bottom surface portion.

従来より、例えば、図１４（ｅ）に示すごとく、底面部９１と、底面部９１の外周端部から立設した環状の側壁部９２とを有するカップ状部品９は、プレス成形を行って成形している。
上記カップ状部品９をプレス成形する際には、まず、図１４（ａ）に示すごとく、平板状のワーク９０を準備し、図１４（ｂ）に示すごとく、このワーク９０に絞り成形を行い、底面部９１とこの底面部９１の外周端部から環状に立設した予備側壁部９２Ａとを形成する。 Conventionally, for example, as shown in FIG. 14 (e), a cup-shaped component 9 having a bottom surface portion 91 and an annular side wall portion 92 erected from the outer peripheral end portion of the bottom surface portion 91 is formed by press molding. is doing.
When the cup-shaped part 9 is press-molded, first, as shown in FIG. 14 (a), a plate-like workpiece 90 is prepared, and as shown in FIG. 14 (b), the workpiece 90 is drawn. Then, a bottom surface portion 91 and a preliminary side wall portion 92A standing in an annular shape from the outer peripheral end portion of the bottom surface portion 91 are formed.

次いで、図１４（ｃ）に示すごとく、予備側壁部９２Ａの開口端部９２１を加圧して上記ワーク９０に対して圧縮成形を行い、底面部９１と予備側壁部９２Ａとによる角部９３を予備側壁部９２Ａの立設方向とは反対側に向けて環状に突出させる。
その後、図１４（ｄ）に示すごとく、底面部９１に穴抜き成形を行い、次いで、図１４（ｅ）に示すごとく、上記予備側壁部９２Ａに対して歯型しごき成形を行って歯面を有する側壁部９２を形成し、カップ状部品９を得ている。 Next, as shown in FIG. 14 (c), the open end 921 of the spare side wall 92A is pressurized to perform compression molding on the workpiece 90, and the corner 93 by the bottom 91 and the spare side wall 92A is spared. The side wall portion 92A is annularly projected toward the side opposite to the standing direction.
Thereafter, as shown in FIG. 14 (d), hole forming is performed on the bottom surface portion 91, and then, as shown in FIG. 14 (e), tooth surface ironing is performed on the preliminary side wall portion 92A to form the tooth surface. The side wall portion 92 having the cup-shaped component 9 is obtained.

こうして、従来は、上記圧縮成形を行う際に、最終的に成形する角部９３に沿った形状のパンチ及びダイスを用いてワーク９０をプレスし、パンチ及びダイスによりワーク９０を閉塞した状態で予備側壁部９２Ａの開口端部９２１を加圧して角部９３の肉厚を増加させ、この角部９３の強度を向上させている。また、この圧縮成形により、角部９３のＲ形状を小さくして、側壁部９２における歯面の歯型有効長さを大きくしている。   Thus, conventionally, when the compression molding is performed, the workpiece 90 is pressed using a punch and a die having a shape along the corner 93 to be finally molded, and the workpiece 90 is closed with the punch and the die closed. The opening end 921 of the side wall 92A is pressurized to increase the thickness of the corner 93, and the strength of the corner 93 is improved. Further, by this compression molding, the R shape of the corner portion 93 is reduced, and the tooth type effective length of the tooth surface at the side wall portion 92 is increased.

上記各プレス成形を行う際には、複数の成形プレス装置を備えるトランスファープレス装置を準備し、各成形は、トランスファーによって各成形プレス装置へ上記ワーク９０を順次搬送して行っている。そのため、上記カップ状部品９を成形するトランスファープレス装置の設備能力は、複数の成形プレス工程における所要荷重を合計したものとなり、非常に大きな設備能力が必要となり、また、設備全体が大型化してしまう。なお、このような問題点は、単独で稼動する単独成形プレス装置を複数並べて各成形を行う場合においても同様に生じる。   When performing each press molding, a transfer press device including a plurality of molding press devices is prepared, and each molding is performed by sequentially transferring the workpiece 90 to each molding press device by transfer. Therefore, the equipment capacity of the transfer press device for molding the cup-shaped part 9 is the sum of the required loads in a plurality of molding press processes, so that a very large equipment capacity is required, and the entire equipment is enlarged. . Such a problem also occurs in the case where a plurality of single molding presses operating independently are arranged to perform each molding.

よって、設備の小型化を図っても、上記角部９３の強度が低下することを防止し、歯型有効長さを大きく確保することができる装置及び方法の開発が望まれていた。
また、上記絞り成形を行ったときには、底面部９１の外周端部、すなわち上記角部９３には、大きな曲げ荷重が作用している。そのため、上記側壁部９２を形成した後においても、角部９３の肉厚が十分ではなく、角部９３の強度を確保するためには十分ではない。 Therefore, there has been a demand for the development of an apparatus and method that can prevent the strength of the corner portion 93 from decreasing and secure a large effective tooth-type length even when the equipment is downsized.
Further, when the drawing is performed, a large bending load is applied to the outer peripheral end portion of the bottom surface portion 91, that is, the corner portion 93. For this reason, even after the side wall portion 92 is formed, the corner portion 93 is not thick enough to secure the strength of the corner portion 93.

また、例えば、特許文献１のカップ成形方法においては、複数の成形部を作動させて、所望形状のカップ（カップ状部品９）を１台の複動プレスによって成形する方法が開示されている。しかしながら、特許文献１においては、外側の底壁（底面部９１）と外側の側壁（側壁部９２）とによる角部の強度の低下を防止する工夫は行っておらず、角部の強度を確保するためには十分ではない。   Further, for example, in the cup forming method of Patent Document 1, a method is disclosed in which a plurality of forming portions are operated to form a cup (cup-shaped part 9) having a desired shape with a single double-acting press. However, in Patent Document 1, no measures are taken to prevent a decrease in the strength of the corners caused by the outer bottom wall (bottom surface portion 91) and the outer side walls (sidewall portions 92), and the strength of the corner portions is ensured. Not enough to do.

特開２０００−２５４７３６号公報JP 2000-254736 A

本発明は、かかる従来の問題点に鑑みてなされたもので、設備の小型化を図ると共に、底面部と側壁部とによる角部の強度低下を防止することができるカップ状部品の成形方法及び成形装置を提供しようとするものである。   The present invention has been made in view of such conventional problems, and it is possible to reduce the size of the equipment and to prevent a reduction in the strength of the corner portion due to the bottom surface portion and the side wall portion, and A molding apparatus is to be provided.

第１の発明は、底面部と、該底面部の外周端部から立設した環状の側壁部とを有するカップ状部品を成形する方法において、
上記カップ状部品を成形するに当たっては、成形穴を備えたダイスと、該ダイスの上記成形穴内をスライドするよう互いに対向配設した第１パンチ及び第２パンチとを準備し、
上記第１パンチの外周には、上記底面部と上記側壁部との間の角部よりも大きな曲率のスリーブ角部を先端部に形成してなる絞りパンチスリーブを配設し、上記ダイスの上記成形穴には、上記第１パンチに近い側から順に、ストレート状の絞り成形穴部と、該絞り成形穴部と同じ内径から上記第１パンチから遠い側に向けてテーパ状に縮径してなる縮管成形穴部と、該縮管成形穴部よりも縮径してなるストレート状のしごき成形穴部とを形成しておき、
上記第１パンチと上記第２パンチとの間に、平板状のワークを挟持するワーク挟持工程と、
上記第１パンチと上記第２パンチとの間に上記ワークを挟持した状態を維持して、上記ダイスに対して上記第１パンチ、上記第２パンチ及び上記絞りパンチスリーブを前進させ、該絞りパンチスリーブと上記絞り成形穴部とによって上記ワークに絞り成形を行い、環状に立設する予備側壁部を形成する絞り成形工程と、
上記第１パンチと上記第２パンチとの間に上記ワークを挟持した状態を維持して、上記ダイスに対して上記第１パンチ及び上記第２パンチを前進させ、上記第１パンチと上記縮管成形穴部とによって上記予備側壁部に縮管成形を行い、縮管側壁部を形成する縮管成形工程と、
上記第１パンチと上記第２パンチとの間に上記ワークを挟持した状態を維持して、上記ダイスに対して上記第１パンチ及び上記第２パンチをさらに前進させ、上記第１パンチと上記しごき成形穴部とによって上記縮管側壁部にしごき成形を行い、上記側壁部を形成するしごき成形工程とを含むことを特徴とするカップ状部品の成形方法にある（請求項１）。 A first invention is a method of molding a cup-shaped part having a bottom surface portion and an annular side wall portion erected from an outer peripheral end portion of the bottom surface portion.
In forming the cup-shaped part, a die provided with a forming hole, and a first punch and a second punch arranged to face each other so as to slide in the forming hole of the die are prepared,
On the outer periphery of the first punch, a drawing punch sleeve formed by forming a sleeve corner portion having a curvature larger than a corner portion between the bottom surface portion and the side wall portion at the tip portion is provided. In the forming hole, in order from the side closer to the first punch, the diameter of the straight drawn hole is reduced in a tapered shape from the same inner diameter as the drawn hole to the side farther from the first punch. Forming a reduced tube forming hole and a straight ironing formed hole having a diameter smaller than that of the reduced tube forming hole,
A workpiece clamping step of clamping a flat workpiece between the first punch and the second punch;
Maintaining a state in which the workpiece is sandwiched between the first punch and the second punch, the first punch, the second punch, and the drawing punch sleeve are advanced with respect to the die, and the drawing punch A drawing process for drawing the workpiece by the sleeve and the drawing hole, and forming a preliminary side wall portion standing in an annular shape;
The state in which the work is sandwiched between the first punch and the second punch is maintained, the first punch and the second punch are advanced with respect to the die, and the first punch and the contracted tube are moved forward. A tube forming step for forming a tube contraction side wall portion by performing tube contraction on the preliminary side wall portion by a forming hole portion; and
Maintaining a state where the work is sandwiched between the first punch and the second punch, the first punch and the second punch are further advanced with respect to the die, and the first punch and the ironing are performed. A cup-shaped part molding method comprising: a ironing process for forming the side wall part by ironing the reduced-container side wall part with a molding hole part (Claim 1).

本発明のカップ状部品の成形方法においては、上記ワーク挟持工程として、上記第１パンチと上記第２パンチとの間に平板状のワークを挟持する。次いで、上記絞り成形工程として、上記ワークの挟持状態を維持して、上記ダイスに対して第１パンチ、第２パンチ及び上記絞りパンチスリーブを前進させる。このとき、絞りパンチスリーブとダイスの絞り成形穴部とによってワークに絞り成形が行われ、予備底面部と、この予備底面部の外周端部から環状に立設する予備側壁部とが形成される。そして、予備側壁部は、上記側壁部の直径よりも大きな直径で形成される。
また、予備底面部と予備側壁部とによる予備角部は、最終的に成形する角部よりも大きな曲率を有する絞りパンチスリーブのスリーブ角部によって加圧されて成形される。そのため、上記予備角部の肉厚が局所的に減少してしまうことを防止することができる。 In the method for forming a cup-shaped part of the present invention, a plate-shaped workpiece is clamped between the first punch and the second punch as the workpiece clamping step. Next, as the drawing process, the first punch, the second punch, and the drawing punch sleeve are moved forward with respect to the die while maintaining the sandwiched state of the workpiece. At this time, the drawing is performed on the workpiece by the drawing punch sleeve and the drawing forming hole portion of the die, and a preliminary bottom surface portion and a preliminary side wall portion standing annularly from the outer peripheral end portion of the preliminary bottom surface portion are formed. . The spare side wall portion is formed with a diameter larger than the diameter of the side wall portion.
Further, the preliminary corner portion formed by the preliminary bottom surface portion and the preliminary side wall portion is pressed and molded by the sleeve corner portion of the drawing punch sleeve having a larger curvature than the corner portion to be finally molded. Therefore, it is possible to prevent the thickness of the preliminary corner portion from being locally reduced.

次いで、上記縮管成形工程として、上記ワークの挟持状態を維持して、ダイスに対して第１パンチ及び第２パンチを前進させる。このとき、第１パンチとダイスの縮管成形穴部とによって予備側壁部に縮管成形が行われる。そして、この縮管成形は、肉厚の局所的な減少が防止された上記予備角部及び上記予備側壁部を立設させて行われる。これにより、底面部と、この底面部の外周端部から環状に立設する縮管側壁部とが形成される。そして、上述したように一旦予備側壁部を成形し、これを縮管成形するため、底面部と縮管側壁部とによる角部の肉厚を十分に確保することができる。   Next, as the reduced tube forming step, the first punch and the second punch are advanced with respect to the die while maintaining the sandwiched state of the workpiece. At this time, the first side punch portion and the reduced-pressure tube forming hole portion of the die are subjected to reduced-tube molding on the preliminary side wall portion. Then, this contraction tube forming is performed by erecting the preliminary corner portion and the preliminary side wall portion in which the local reduction in thickness is prevented. Thereby, a bottom face part and a contraction tube side wall part standing in an annular shape from the outer peripheral end part of the bottom face part are formed. And as above-mentioned, since a preliminary | backup side wall part is once shape | molded and this is reduced tube-formed, the thickness of the corner | angular part by a bottom face part and a reduced tube side wall part can fully be ensured.

その後、上記しごき成形工程として、上記ワークの挟持状態を維持して、上記ダイスに対して上記第１パンチ及び上記第２パンチをさらに前進させる。このとき、第１パンチとダイスのしごき成形穴部とによって縮管側壁部にしごき成形が行われる。
こうして、縮管側壁部から側壁部を形成して、上記カップ状部品を成形することができる。また、しごき成形の際にも、底面部と側壁部とによる角部の肉厚を十分に確保することができ、この角部の強度低下を防止することができる。 Thereafter, as the ironing step, the first punch and the second punch are further advanced with respect to the die while maintaining the sandwiched state of the workpiece. At this time, iron forming is performed on the side wall portion of the reduced tube by the first punch and the iron forming hole portion of the die.
In this manner, the cup-shaped part can be formed by forming the side wall portion from the contracted tube side wall portion. In addition, also in the ironing process, it is possible to sufficiently secure the thickness of the corner portion due to the bottom surface portion and the side wall portion, and it is possible to prevent the strength of the corner portion from being lowered.

また、本発明においては、カップ状部品を成形する際に従来の圧縮成形を必要とせず、少ない成形工程を行うことによって、カップ状部品を成形することができる。
そのため、複数の成形プレス装置を備えたトランスファープレス装置によって順次各成形工程を行うのではなく、１つの成形プレス装置によって、上記各成形工程を行うことができる。そのため、各成形工程を行う成形プレス装置の設備能力は、各成形工程において最も大きな荷重を伴う成形工程の所要荷重とすることができ、設備の小型化を図ることができる。 In the present invention, the cup-shaped part can be molded by performing a small number of molding steps without requiring conventional compression molding when molding the cup-shaped part.
Therefore, each molding process can be performed by one molding press apparatus, instead of sequentially performing each molding process by a transfer press apparatus having a plurality of molding press apparatuses. Therefore, the equipment capacity of the molding press apparatus that performs each molding process can be set as a required load of the molding process with the largest load in each molding process, and the equipment can be downsized.

それ故、本発明のカップ状部品の成形方法によれば、設備の小型化を図ると共に、底面部と側壁部とによる角部の強度低下を防止して、カップ状部品を成形することができる。   Therefore, according to the method for molding a cup-shaped component of the present invention, it is possible to mold the cup-shaped component while reducing the size of the equipment and preventing the strength of the corner portion from being reduced by the bottom surface portion and the side wall portion. .

第２の発明は、底面部と、該底面部の外周端部から立設した環状の側壁部とを有するカップ状部品を成形する成形装置において、
該成形装置は、成形穴を備えたダイスと、該ダイスの上記成形穴内をスライドするよう互いに対向配設した第１パンチ及び第２パンチとを有しており、
上記第１パンチの外周には、上記底面部と上記側壁部との間の角部よりも大きな曲率のスリーブ角部を先端部に形成してなる絞りパンチスリーブを配設してなり、上記ダイスの上記成形穴には、上記第１パンチに近い側から順に、ストレート状の絞り成形穴部と、該絞り成形穴部と同じ内径から上記第１パンチから遠い側に向けてテーパ状に縮径してなる縮管成形穴部と、該縮管成形穴部よりも縮径してなるストレート状のしごき成形穴部とを形成してなり、
上記成形装置は、上記第１パンチと上記第２パンチとの間に平板状のワークを挟持させ、次いで、上記ダイスの上記絞り成形穴部の終端位置まで上記第１パンチ、上記第２パンチ及び上記絞りパンチスリーブを前進させ、その後、上記ダイスの上記しごき成形穴部の終端位置まで上記第１パンチ及び上記第２パンチを前進させるよう構成してあることを特徴とするカップ状部品の成形装置にある（請求項５）。 A second invention is a molding apparatus for molding a cup-shaped part having a bottom surface portion and an annular side wall portion erected from an outer peripheral end portion of the bottom surface portion.
The molding apparatus includes a die having a molding hole, and a first punch and a second punch that are arranged to face each other so as to slide in the molding hole of the die.
On the outer periphery of the first punch, there is disposed a drawing punch sleeve having a sleeve corner portion having a curvature larger than that of the corner portion between the bottom surface portion and the side wall portion at the tip portion. In the forming hole, in order from the side closer to the first punch, a straight drawn hole portion, and the diameter is reduced in a tapered shape from the same inner diameter as the drawn hole portion toward the side farther from the first punch. And a straight ironing hole formed by reducing the diameter of the reduced tube forming hole.
The molding apparatus sandwiches a plate-like workpiece between the first punch and the second punch, and then the first punch, the second punch, and the end position of the drawing hole portion of the die A cup-shaped part molding apparatus, wherein the drawing punch sleeve is advanced, and then the first punch and the second punch are advanced to a terminal position of the ironing hole of the die. (Claim 5).

本発明のカップ状部品の成形装置は、上記第１パンチの外周に、上記絞りパンチスリーブを配設し、上記ダイスの成形穴に、上記絞り成形穴部、上記縮管成形穴部及び上記しごき成形穴部を形成してなる。そして、上記成形装置は、上記第１パンチ、第２パンチ及び絞りパンチスリーブを適宜前進させる構成を採用したことにより、上記カップ状部品の成形方法の発明と同様に、底面部と側壁部とによる角部の強度低下を防止したカップ状部品を成形することができる。
それ故、本発明のカップ状部品の成形装置によれば、設備の小型化を図ると共に、底面部と側壁部とによる角部の強度低下を防止して、カップ状部品を成形することができる。 In the cup-shaped part molding apparatus of the present invention, the drawing punch sleeve is disposed on the outer periphery of the first punch, and the drawing hole, the reduced tube forming hole, and the ironing are formed in the die forming hole. A forming hole is formed. And the said shaping | molding apparatus employ | adopted the structure which advances the said 1st punch, the 2nd punch, and a drawing punch sleeve suitably, By a bottom face part and a side wall part similarly to invention of the molding method of the said cup-shaped components. A cup-shaped part that prevents the strength of the corners from being lowered can be formed.
Therefore, according to the cup-shaped component molding apparatus of the present invention, it is possible to mold the cup-shaped component while reducing the size of the equipment and preventing the strength of the corner portion from being lowered by the bottom surface portion and the side wall portion. .

上述した第１、第２の発明における好ましい実施の形態につき説明する。
上記第１の発明においては、上記第１パンチと上記絞りパンチスリーブとの間には、圧縮パンチスリーブが配設してあり、上記しごき成形工程においては、上記圧縮パンチスリーブによって上記縮管側壁部の開口端部を加圧しながら上記しごき成形を行うことが好ましい（請求項２）。 A preferred embodiment in the first and second inventions described above will be described.
In the first invention, a compression punch sleeve is disposed between the first punch and the drawing punch sleeve, and in the ironing process, the contraction tube side wall portion is formed by the compression punch sleeve. It is preferable to perform the ironing molding while pressurizing the opening end of the first (claim 2).

この場合には、上記しごき成形工程において、上記圧縮パンチスリーブによって縮管側壁部の開口端部を加圧する加圧力は、上記第１パンチが前進する際に発生させるしごき成形のための加圧力よりも小さくする。そして、圧縮パンチスリーブによって縮管側壁部の開口端部を加圧していることにより、上記しごき成形を行うときに、底面部と縮管側壁部とによる角部が過剰に開口端部に向けて引き伸ばされてしまうことを防止することができる。これにより、上記角部の肉厚を一層容易に確保することができ、この角部の強度低下を一層容易に防止することができる。   In this case, in the ironing process, the pressing force for pressurizing the open end of the contraction tube side wall by the compression punch sleeve is greater than the pressing force for ironing generated when the first punch moves forward. Also make it smaller. Then, by pressurizing the opening end portion of the contraction tube side wall portion with the compression punch sleeve, when performing the ironing, the corner portion by the bottom surface portion and the contraction tube side wall portion is excessively directed toward the opening end portion. It can prevent being stretched. Thereby, the thickness of the corner can be more easily ensured, and the strength reduction of the corner can be more easily prevented.

また、上記しごき成形穴部は、上記側壁部に歯面を成形するための歯型断面形状を有しており、上記第１パンチの外周面は、上記しごき成形穴部と共に上記側壁部に歯面を成形するための歯型断面形状を有しており、上記圧縮パンチスリーブは、上記しごき成形穴部と上記第１パンチの外周面との間隙に沿った歯型断面形状を有しており、上記しごき成形工程においては、上記縮管側壁部に歯型しごき成形を行い、上記側壁部に歯面を形成することが好ましい（請求項３）。   The ironing hole has a tooth cross-sectional shape for forming a tooth surface on the side wall, and the outer peripheral surface of the first punch has teeth on the side wall together with the iron forming hole. The compression punch sleeve has a tooth profile cross-sectional shape along the gap between the ironing hole and the outer peripheral surface of the first punch. In the ironing process, it is preferable to form a tooth surface on the side wall by performing tooth-type ironing on the side wall of the contraction tube (Claim 3).

この場合には、上記底面部と側壁部とによる角部の強度低下を防止して、側壁部に歯面を備えたカップ状部品を成形することができる。また、この場合には、上記圧縮パンチスリーブによって縮管側壁部の開口端部を加圧しながら、上記第１パンチとダイスのしごき成形穴部とによって歯型しごき成形（歯型成形を伴うしごき成形）を行うことにより、寸法精度の優れた歯面を有する側壁部を形成することができる。   In this case, it is possible to prevent the corner portion from being lowered in strength by the bottom surface portion and the side wall portion, and to mold a cup-shaped component having a tooth surface on the side wall portion. Further, in this case, while pressing the opening end portion of the contracted tube side wall portion with the compression punch sleeve, the tooth punching is performed by the first punch and the die forming hole portion of the die (the iron forming accompanied with the tooth forming). ), A side wall portion having a tooth surface with excellent dimensional accuracy can be formed.

また、上記カップ状部品は、上記側壁部に歯面を有するクラッチハブであることが好ましい（請求項４）。
この場合には、上記底面部と側壁部とによる角部の強度低下を防止して、クラッチハブを成形することができる。
なお、クラッチハブは、例えば、トランスミッション等の動力伝達用の部品とすることができる。 The cup-shaped part is preferably a clutch hub having a tooth surface on the side wall.
In this case, it is possible to mold the clutch hub while preventing the strength of the corners from being lowered due to the bottom and side walls.
The clutch hub can be a power transmission component such as a transmission.

上記第２の発明においては、上記第１パンチと上記絞りパンチスリーブとの間には、圧縮パンチスリーブが配設してあり、上記成形装置は、上記第１パンチ及び上記第２パンチを上記ダイスの上記しごき成形穴部内を前進させるときには、上記圧縮パンチスリーブを前進させるよう構成してあることが好ましい（請求項６）。   In the second invention, a compression punch sleeve is disposed between the first punch and the drawing punch sleeve, and the molding apparatus attaches the first punch and the second punch to the die. It is preferable that the compression punch sleeve is advanced when the iron forming hole is advanced (claim 6).

この場合には、上記第１パンチ及び上記第２パンチを前進させて上記しごき成形を行うときには、上記圧縮パンチスリーブを前進させて、上記ワークにおける縮管側壁部の開口端部を加圧することができる。そのため、上記しごき成形を行うときに、底面部と縮管側壁部とによる角部が過剰に開口端部に向けて引き伸ばされてしまうことを防止することができる。これにより、上記角部の肉厚を一層容易に確保することができ、この角部の強度低下を一層容易に防止することができる。   In this case, when the ironing is performed by advancing the first punch and the second punch, the compression punch sleeve is advanced to pressurize the open end portion of the contraction side wall portion of the workpiece. it can. Therefore, when performing the ironing, it is possible to prevent the corner portion due to the bottom surface portion and the contracted tube side wall portion from being excessively stretched toward the opening end portion. Thereby, the thickness of the corner can be more easily ensured, and the strength reduction of the corner can be more easily prevented.

また、上記しごき成形穴部は、上記側壁部に歯面を成形するための歯型断面形状を有しており、上記第１パンチの外周面は、上記しごき成形穴部と共に上記側壁部に歯面を成形するための歯型断面形状を有しており、上記圧縮パンチスリーブは、上記しごき成形穴部と上記第１パンチの外周面との間隙に沿った歯型断面形状を有していることが好ましい（請求項７）。   The ironing hole has a tooth cross-sectional shape for forming a tooth surface on the side wall, and the outer peripheral surface of the first punch has teeth on the side wall together with the iron forming hole. The compression punch sleeve has a tooth cross-sectional shape along the gap between the ironing hole and the outer peripheral surface of the first punch. (Claim 7).

この場合には、上記底面部と側壁部とによる角部の強度低下を防止して、側壁部に歯面を備えたカップ状部品を成形することができる。また、この場合には、上記圧縮パンチスリーブによって縮管側壁部の開口端部を加圧しながら、上記第１パンチとダイスのしごき成形穴部とによって歯型しごき成形を行うことにより、寸法精度の優れた歯面を有する側壁部を形成することができる。   In this case, it is possible to prevent the corner portion from being lowered in strength by the bottom surface portion and the side wall portion, and to mold a cup-shaped component having a tooth surface on the side wall portion. Further, in this case, dent accuracy is formed by the first punch and the die forming hole portion of the die while pressurizing the opening end portion of the contracted tube side wall portion by the compression punch sleeve. Sidewall portions having excellent tooth surfaces can be formed.

以下に、本発明のカップ状部品の成形方法及び成形装置にかかる実施例につき、図面と共に説明する。
（実施例１）
図１〜図３に示すごとく、本例のカップ状部品８の成形装置１（以下、単に成形装置１という。）は、底面部８１と、この底面部８１の外周端部から立設した環状の側壁部８２とを有するカップ状部品８を成形する。
図３、図７に示すごとく、上記成形装置１は、成形穴２０を備えたダイス２と、このダイス２の成形穴２０内をスライドするよう互いに対向配設した第１パンチ３及び第２パンチ６とを有している。 Hereinafter, embodiments of the cup-shaped part molding method and molding apparatus according to the present invention will be described with reference to the drawings.
Example 1
As shown in FIGS. 1 to 3, the molding device 1 (hereinafter simply referred to as the molding device 1) of the cup-shaped part 8 of this example is a bottom surface portion 81 and an annular erected from the outer peripheral end portion of the bottom surface portion 81. The cup-shaped component 8 having the side wall portion 82 is formed.
As shown in FIGS. 3 and 7, the molding apparatus 1 includes a die 2 having a molding hole 20, and a first punch 3 and a second punch that are arranged to face each other so as to slide in the molding hole 20 of the die 2. 6.

上記第１パンチ３の外周には、底面部８１と側壁部８２との間の角部８３よりも大きな曲率のスリーブ角部４１１を先端部４１に形成してなる絞りパンチスリーブ４が配設されている。また、上記ダイス２の成形穴２０には、第１パンチ３に近い側から順に、ストレート状の絞り成形穴部２１と、この絞り成形穴部２１と同じ内径から第１パンチ３から遠い側に向けてテーパ状に縮径してなる縮管成形穴部２２と、この縮管成形穴部２２よりも縮径してなるストレート状のしごき成形穴部２３とが形成されている。   On the outer periphery of the first punch 3, there is disposed a drawing punch sleeve 4 in which a sleeve corner portion 411 having a larger curvature than the corner portion 83 between the bottom surface portion 81 and the side wall portion 82 is formed at the tip portion 41. ing. Further, in the forming hole 20 of the die 2, in order from the side closer to the first punch 3, a straight-shaped drawing hole 21, and the same inner diameter as the drawing hole 21, away from the first punch 3. A reduced tube forming hole portion 22 having a diameter reduced toward the taper and a straight ironing hole portion 23 having a diameter reduced from the reduced tube forming hole portion 22 are formed.

上記成形装置１は、図３、図８に示すごとく、第１パンチ３と第２パンチ６との間に平板状のワーク８０を挟持させ、次いで、図４、図９に示すごとく、ダイス２の絞り成形穴部２１との対向位置まで第１パンチ３、第２パンチ６及び絞りパンチスリーブ４を前進させ、その後、図５、図６、図１０〜図１２に示すごとく、ダイス２のしごき成形穴部２３との対向位置まで第１パンチ３及び第２パンチ６を前進させるよう構成されている。この成形装置１は、平板状のワーク８０に複数の成形を行ってカップ状部品８を成形する複動プレスを構成している。
以下に、これを詳説する。 As shown in FIGS. 3 and 8, the molding apparatus 1 sandwiches a plate-like workpiece 80 between the first punch 3 and the second punch 6, and then, as shown in FIGS. 4 and 9, the die 2. The first punch 3, the second punch 6 and the drawing punch sleeve 4 are advanced to a position facing the drawing forming hole 21, and then the die 2 is ironed as shown in FIGS. 5, 6, and 10 to 12. The first punch 3 and the second punch 6 are configured to advance to a position facing the forming hole 23. The molding apparatus 1 constitutes a double-acting press that molds a cup-shaped part 8 by performing a plurality of moldings on a flat workpiece 80.
This will be described in detail below.

本例においては、図３〜図１２に示すごとく、第１パンチ３及び第２パンチ６がダイス２の成形穴２０内を下方に向けて移動して成形を行うよう構成されている。また、第１パンチ３は、第２パンチ６の上方に位置しており、第１パンチ３、第２パンチ６、絞りパンチスリーブ４及び後述する圧縮パンチスリーブ５の前進とは、これらが下降することをいう。   In this example, as shown in FIGS. 3 to 12, the first punch 3 and the second punch 6 are configured to move downward in the forming hole 20 of the die 2 to perform forming. Further, the first punch 3 is located above the second punch 6, and the first punch 3, the second punch 6, the drawing punch sleeve 4, and the forward movement of the compression punch sleeve 5 described later are lowered. That means.

図３、図７に示すごとく、本例の成形装置１においては、上記第１パンチ３と上記絞りパンチスリーブ４との間に、これらの間の間隙の形状に沿った形状を有する圧縮パンチスリーブ５が配設されている。この圧縮パンチスリーブ５は、第１パンチ３及び第２パンチ６をダイス２のしごき成形穴部２３内を前進させるときに、第１パンチ３に追従して前進するよう構成されている。   As shown in FIGS. 3 and 7, in the molding apparatus 1 of this example, a compression punch sleeve having a shape along the shape of the gap between the first punch 3 and the drawing punch sleeve 4. 5 is disposed. The compression punch sleeve 5 is configured to advance following the first punch 3 when the first punch 3 and the second punch 6 are advanced in the ironing hole 23 of the die 2.

図１（ｄ）、図２に示すごとく、本例において成形するカップ状部品８は、その側壁部８２に歯面を有しており、トランスミッションに使用するクラッチハブである。この側壁部８２における歯面は、素材部分が所定の幅を有して、側壁部８２の内周側と外周側とに交互に凹凸を形成してなるものである。   As shown in FIGS. 1D and 2, the cup-shaped component 8 to be molded in this example has a tooth surface on the side wall 82 and is a clutch hub used for a transmission. The tooth surface of the side wall portion 82 has a material portion having a predetermined width and is formed with irregularities alternately on the inner peripheral side and the outer peripheral side of the side wall portion 82.

また、図３、図７に示すごとく、本例の成形装置１は、上記側壁部８２に歯面を有するカップ状部品８を成形するものである。
そして、上記ダイス２におけるしごき成形穴部２３は、上記側壁部８２に歯面を成形するための歯型断面形状を有している。 As shown in FIGS. 3 and 7, the molding apparatus 1 of the present example is for molding the cup-shaped component 8 having a tooth surface on the side wall portion 82.
The ironing hole 23 in the die 2 has a tooth cross-sectional shape for forming a tooth surface on the side wall 82.

また、図３、図７、図１３に示すごとく、上記第１パンチ３の外周面３０は、しごき成形穴部２３と共に側壁部８２に歯面を成形するための歯型断面形状を有している。また、上記圧縮パンチスリーブ５は、しごき成形穴部２３と第１パンチ３の外周面３０との間隙に沿った歯型断面形状を有している。上記第１パンチ３は、断面円形状に形成されており、上記絞りパンチスリーブ４は、第１パンチ３を挿通配置する断面円環形状を有している。また、上記圧縮パンチスリーブ５は、第１パンチ３と絞りパンチスリーブ４との間隙の形状に沿った断面円環形状を有している。   Further, as shown in FIGS. 3, 7, and 13, the outer peripheral surface 30 of the first punch 3 has a tooth profile cross-sectional shape for forming a tooth surface on the side wall portion 82 together with the ironing hole portion 23. Yes. Further, the compression punch sleeve 5 has a tooth-shaped cross-sectional shape along the gap between the ironing hole 23 and the outer peripheral surface 30 of the first punch 3. The first punch 3 is formed in a circular cross section, and the drawing punch sleeve 4 has an annular cross section in which the first punch 3 is inserted and arranged. The compression punch sleeve 5 has an annular cross section along the shape of the gap between the first punch 3 and the drawing punch sleeve 4.

また、本例の成形装置１は、サーボモータの制御を行ってカップ状部品８の成形を行う直動式（電気制御式）プレス機である。この直動式プレス機は、サーボモータの回転力をボールねじ等の動力変換機構を用いて推力に変換し、フィードバック制御された所定の加圧力を発生させるものである。そして、上記第１パンチ３及び絞りパンチスリーブ４は、サーボモータによる加圧力を受けて動作するよう構成されている。また、上記圧縮パンチスリーブ５は、第１パンチ３がダイス２のしごき成形穴部２３とによってしごき成形を行う際に、第１パンチ３が発生させる加圧力よりも小さな加圧力を発生させるよう構成されている。   The molding apparatus 1 of this example is a direct acting (electrically controlled) press machine that performs control of the servo motor to mold the cup-shaped component 8. This direct acting press machine converts a rotational force of a servo motor into a thrust using a power conversion mechanism such as a ball screw, and generates a predetermined pressurizing force that is feedback controlled. The first punch 3 and the squeezing punch sleeve 4 are configured to operate under pressure applied by a servo motor. The compression punch sleeve 5 is configured to generate a pressing force that is smaller than the pressing force generated by the first punch 3 when the first punch 3 performs ironing with the ironing hole 23 of the die 2. Has been.

また、上記第２パンチ６は、スライドしないように固定された固定状態と、ガスクッション等の付勢手段（図示略）によって、所定の付勢力を第１パンチ３と対向する方向へ発生させる付勢状態とを形成するよう構成されている。また、ダイス２は、成形装置１に固定されている。
なお、成形装置１としては、油圧式プレス機を用いてもよい。 Further, the second punch 6 is fixed so as not to slide, and an urging means (not shown) such as a gas cushion generates a predetermined urging force in a direction opposite to the first punch 3. Configured to form a force state. The die 2 is fixed to the molding apparatus 1.
In addition, as the molding apparatus 1, a hydraulic press machine may be used.

また、図２に示すごとく、本例において成形するカップ状部品８は、底面部８１の外周端部に、側壁部８２の立設方向とは反対側に向けて環状に突出した突出部８１１を形成してなるものである。
そして、図７に示すごとく、第１パンチ３の先端面３１は、その内周側部分に平坦状に形成された内周平坦面部３１１と、この内周平坦面部３１１の外周側部分に環状に突出形成された外周突出面部３１２とを備えている。また、第２パンチ６の先端面６１は、上記内周平坦面部３１１に対向する位置に平坦状に形成された内周対向面部６１１と、上記外周平坦面部に対向する位置に陥没形成された外周対向面部６１２とを備えている。 Further, as shown in FIG. 2, the cup-shaped component 8 to be molded in the present example has a protruding portion 811 that protrudes in an annular shape toward the side opposite to the standing direction of the side wall portion 82 at the outer peripheral end portion of the bottom surface portion 81. It is formed.
As shown in FIG. 7, the front end surface 31 of the first punch 3 has an inner peripheral flat surface portion 311 formed in a flat shape on the inner peripheral side portion thereof, and an annular shape on the outer peripheral side portion of the inner peripheral flat surface portion 311. And an outer peripheral projecting surface portion 312 formed to project. Further, the front end surface 61 of the second punch 6 has an inner peripheral facing surface portion 611 formed flat at a position facing the inner peripheral flat surface portion 311 and an outer periphery formed depressed at a position facing the outer peripheral flat surface portion. And an opposing surface portion 612.

本例においては、上記構成の成形装置１を１台用いて、以下の各成形工程を行い、カップ状部品８を成形する。
上記カップ状部品８を成形するに当たっては、まず、図７に示すごとく、ワーク載置工程として、第２パンチ６及びダイス２の上に平板状のワーク８０（図１（ａ）参照）を載置する。 In this example, the cup-shaped component 8 is molded by performing the following molding processes using one molding apparatus 1 having the above-described configuration.
In forming the cup-shaped component 8, first, as shown in FIG. 7, a plate-shaped workpiece 80 (see FIG. 1A) is placed on the second punch 6 and the die 2 as a workpiece placing step. Put.

次いで、図３、図８に示すごとく、ワーク挟持工程として、第２パンチ６を固定状態にしておき、ダイス２及び第２パンチ６に対して、第１パンチ３、絞りパンチスリーブ４及び圧縮パンチスリーブ５を前進（下降）させる。このとき、第１パンチ３の先端面３１及び絞りパンチスリーブ４の先端部４１が平板状のワーク８０に当接し、第１パンチ３における外周突出面部３１２がワーク８０の一部を加圧する。
そして、ワーク８０の一部が第２パンチ６における外周対向面部６１２へ向けて変形し、突出部８１１を形成してなる予備底面部８１Ａが形成される。
そして、この予備底面部８１Ａの形成の後には、ワーク８０は第１パンチ３と第２パンチ６との間に挟持される。 Next, as shown in FIGS. 3 and 8, the second punch 6 is fixed in the workpiece clamping process, and the first punch 3, the squeezing punch sleeve 4, and the compression punch with respect to the die 2 and the second punch 6. The sleeve 5 is moved forward (down). At this time, the front end surface 31 of the first punch 3 and the front end portion 41 of the drawing punch sleeve 4 abut on the flat workpiece 80, and the outer peripheral protruding surface portion 312 of the first punch 3 presses a part of the work 80.
Then, a part of the work 80 is deformed toward the outer peripheral facing surface portion 612 of the second punch 6, and a preliminary bottom surface portion 81 </ b> A formed with a protruding portion 811 is formed.
Then, after the preliminary bottom surface portion 81 </ b> A is formed, the workpiece 80 is sandwiched between the first punch 3 and the second punch 6.

次いで、図４、図９に示すごとく、絞り成形工程として、第１パンチ３と第２パンチ６との間にワーク８０を挟持した状態を維持して、ダイス２に対して第１パンチ３、第２パンチ６及び絞りパンチスリーブ４を前進させる。このとき、第２パンチ６は、付勢状態にし、付勢手段によって第１パンチ３との間にワーク８０を挟持させながら、第１パンチ３の加圧力を受けて前進する。   Next, as shown in FIGS. 4 and 9, as a drawing forming process, the state in which the workpiece 80 is sandwiched between the first punch 3 and the second punch 6 is maintained, and the first punch 3 with respect to the die 2, The second punch 6 and the drawing punch sleeve 4 are advanced. At this time, the second punch 6 is energized, and moves forward under the pressure of the first punch 3 while the work 80 is sandwiched between the second punch 6 and the first punch 3 by the urging means.

そして、絞りパンチスリーブ４とダイス２の絞り成形穴部２１とによってワーク８０に絞り成形が行われ、予備底面部８１Ａの外周端部から環状に立設する予備側壁部８２Ａ（図１（ｂ）参照）とが形成される。そして、予備側壁部８２Ａは、上記側壁部８２の直径よりも大きな直径で形成される。
また、予備底面部８１Ａと予備側壁部８２Ａとによる予備角部８３Ａ（図９参照）は、最終的に成形する上記角部８３よりも大きな曲率を有する絞りパンチスリーブ４のスリーブ角部４１１によって加圧されて成形される。そのため、上記予備角部８３Ａの肉厚が局所的に減少してしまうことを防止することができる。 Then, the work 80 is drawn by the drawing punch sleeve 4 and the drawing hole portion 21 of the die 2, and a spare side wall portion 82A standing in an annular shape from the outer peripheral end portion of the spare bottom surface portion 81A (FIG. 1B). Reference) is formed. The spare side wall 82A is formed with a diameter larger than the diameter of the side wall 82.
Further, a spare corner portion 83A (see FIG. 9) formed by the spare bottom surface portion 81A and the spare side wall portion 82A is added by a sleeve corner portion 411 of the drawing punch sleeve 4 having a larger curvature than the corner portion 83 to be finally formed. Pressed and molded. Therefore, it is possible to prevent the thickness of the preliminary corner portion 83A from being locally reduced.

次いで、図５、図１０に示すごとく、縮管成形工程として、第１パンチ３と第２パンチ６との間にワーク８０を挟持した状態を維持して、絞りパンチスリーブ４及び圧縮パンチスリーブ５の前進を停止させ、ダイス２に対して第１パンチ３及び第２パンチ６を前進させる。
このとき、第１パンチ３とダイス２の縮管成形穴部２２とによって予備側壁部８２Ａに縮管成形が行われる。そして、この縮管成形は、肉厚の局所的な減少が防止された上記予備角部８３Ａ及び上記予備側壁部８２Ａを立設させて行われる。
こうして、底面部８１と、この底面部８１の外周端部から環状に立設する縮管側壁部８２Ｂ（図１（ｃ）参照）とが形成される。そして、上述したように一旦予備側壁部８２Ａを成形し、これを縮管成形するため、底面部８１と縮管側壁部８２Ｂとによる角部８３（図１０参照）の肉厚を十分に確保することができる。 Next, as shown in FIG. 5 and FIG. 10, as the reduced tube forming step, the state in which the workpiece 80 is sandwiched between the first punch 3 and the second punch 6 is maintained, and the drawing punch sleeve 4 and the compression punch sleeve 5. The first punch 3 and the second punch 6 are advanced with respect to the die 2.
At this time, the first punch 3 and the reduced tube forming hole portion 22 of the die 2 are subjected to reduced tube forming on the preliminary side wall portion 82A. The contraction tube forming is performed by erecting the preliminary corner portion 83A and the preliminary side wall portion 82A, in which a local reduction in thickness is prevented.
In this way, the bottom surface portion 81 and the contracted-tube side wall portion 82B (see FIG. 1C) standing in an annular shape from the outer peripheral end portion of the bottom surface portion 81 are formed. And as above-mentioned, since the preliminary | backup side wall part 82A is once shape | molded and this is reduced tube-shaped, the thickness of the corner | angular part 83 (refer FIG. 10) by the bottom face part 81 and the reduced tube side wall part 82B is fully ensured. be able to.

次いで、図１１に示すごとく、第１パンチ３に対して圧縮パンチスリーブ５を前進させ、圧縮パンチスリーブ５の先端面５１をワーク８０における縮管側壁部８２Ｂの開口端部８２１に当接させる。
その後、図６、図１２に示すごとく、しごき成形工程として、第１パンチ３と第２パンチ６との間にワーク８０を挟持した状態を維持して、ダイス２に対して第１パンチ３及び第２パンチ６をさらに前進させる。また、第１パンチ３を前進させるときには、この前進に追従して圧縮パンチスリーブ５を前進させる。そして、第１パンチ３がワーク８０を加圧すると共に、第１パンチ３が発生させる加圧力よりも小さな加圧力を圧縮パンチスリーブ５が発生させる。 Next, as shown in FIG. 11, the compression punch sleeve 5 is advanced with respect to the first punch 3, and the distal end surface 51 of the compression punch sleeve 5 is brought into contact with the open end portion 821 of the contraction side wall portion 82 </ b> B of the work 80.
Thereafter, as shown in FIGS. 6 and 12, as the ironing process, the state in which the workpiece 80 is sandwiched between the first punch 3 and the second punch 6 is maintained, and the first punch 3 and the die 2 are The second punch 6 is further advanced. Further, when the first punch 3 is advanced, the compression punch sleeve 5 is advanced following the advance. The first punch 3 pressurizes the workpiece 80 and the compression punch sleeve 5 generates a pressing force smaller than the pressing force generated by the first punch 3.

これにより、圧縮パンチスリーブ５によって縮管側壁部８２Ｂの開口端部８２１（図２参照）を加圧しながら、第１パンチ３とダイス２のしごき成形穴部２３とによって縮管側壁部８２Ｂに歯型しごき成形（歯型成形を伴うしごき成形）が行われる。そして、圧縮パンチスリーブ５によって縮管側壁部８２Ｂの開口端部８２１を加圧していることにより、歯型しごき成形を行うときに、底面部８１と縮管側壁部８２Ｂとによる角部８３が過剰に開口端部８２１に向けて引き伸ばされてしまうことを防止することができる。   As a result, while the compression punch sleeve 5 pressurizes the open end 821 (see FIG. 2) of the contraction tube side wall portion 82B, the first punch 3 and the iron 2 forming hole portion 23 of the die 2 have teeth Molding and ironing (ironing with tooth mold forming) is performed. Since the compression punch sleeve 5 pressurizes the open end portion 821 of the contracted-tube side wall portion 82B, the corner portion 83 formed by the bottom surface portion 81 and the contracted-tube side wall portion 82B is excessive when performing tooth-type ironing. It can be prevented from being stretched toward the open end 821.

こうして、縮管側壁部８２Ｂから側壁部８２を形成して、上記カップ状部品８（図１（ｄ）参照）を成形することができる。
また、歯型しごき成形の際にも、底面部８１と側壁部８２とによる角部８３（図１２参照）の肉厚を十分に確保することができ、この角部８３の強度低下を防止することができる。 Thus, the cup-shaped component 8 (see FIG. 1D) can be formed by forming the side wall portion 82 from the contracted tube side wall portion 82B.
Further, even during the tooth-type ironing, the corner 83 (see FIG. 12) can be sufficiently thickened by the bottom portion 81 and the side wall portion 82, and the strength of the corner 83 can be prevented from being reduced. be able to.

また、本例においては、カップ状部品８を成形する際に従来の圧縮成形を必要とせず、少ない成形工程を行うことによって、カップ状部品８を成形することができる。
そのため、複数の成形プレス装置を備えたトランスファープレス装置によって順次各成形工程を行うのではなく、１つの成形装置１によって、上記各成形工程を行うことができる。そのため、各成形工程を行う成形装置１の成形能力は、各成形工程において最も大きな荷重を伴う成形工程の所要荷重とすることができる。 Moreover, in this example, when the cup-shaped component 8 is molded, the conventional compression molding is not required, and the cup-shaped component 8 can be molded by performing a small number of molding steps.
Therefore, each molding process can be performed by one molding apparatus 1 instead of sequentially performing each molding process by a transfer press apparatus including a plurality of molding press apparatuses. Therefore, the molding capability of the molding apparatus 1 that performs each molding process can be a required load of the molding process with the largest load in each molding process.

そして、成形装置１における各成形工程は、同時に行われず、順次行われるため、各成形工程においてピーク荷重が発生するタイミングをずらすことができ、成形装置１は、成形能力の小さなものとすることができる。
また、上記成形装置１を用いることにより、カップ状部品８を成形するための設備の小型化を図ることができる。 And since each shaping | molding process in the shaping | molding apparatus 1 is not performed simultaneously, but is performed sequentially, the timing which a peak load generate | occur | produces in each shaping | molding process can be shifted, and the shaping | molding apparatus 1 shall be a thing with a small shaping | molding capability. it can.
Moreover, by using the said shaping | molding apparatus 1, size reduction of the installation for shape | molding the cup-shaped components 8 can be achieved.

それ故、本例のカップ状部品８の成形方法及び成形装置１によれば、設備の小型化を図ることができると共に、底面部８１と側壁部８２とによる角部８３の強度低下を防止して、カップ状部品８を成形することができる。   Therefore, according to the molding method and the molding apparatus 1 of the cup-shaped component 8 of this example, the equipment can be reduced in size, and the strength of the corner portion 83 due to the bottom surface portion 81 and the side wall portion 82 can be prevented from being reduced. Thus, the cup-shaped part 8 can be formed.

実施例における、カップ状部品の成形の流れを示す図で、（ａ）平板状のワーク、（ｂ）予備側壁部を形成したワーク、（ｃ）縮管側壁部を形成したワーク、（ｄ）カップ状部品を示す説明図。FIG. 5 is a diagram showing a flow of molding of a cup-shaped part in an embodiment, where (a) a plate-shaped workpiece, (b) a workpiece formed with a preliminary side wall portion, (c) a workpiece formed with a contracted tube side wall portion, (d) Explanatory drawing which shows a cup-shaped component. 実施例における、カップ状部品を示す断面説明図。Sectional explanatory drawing which shows a cup-shaped component in an Example. 実施例における、ワーク挟持工程を行った状態のカップ状部品の成形装置を示す斜視説明図。The perspective explanatory drawing which shows the shaping | molding apparatus of the cup-shaped components in the state which performed the workpiece clamping process in an Example. 実施例における、絞り成形工程を行った状態のカップ状部品の成形装置を示す斜視説明図。The perspective explanatory view which shows the shaping | molding apparatus of the cup-shaped components of the state which performed the draw forming process in an Example. 実施例における、縮管成形工程を行った状態のカップ状部品の成形装置を示す斜視説明図。The perspective explanatory view which shows the shaping | molding apparatus of the cup-shaped components of the state which performed the reduced tube shaping | molding process in an Example. 実施例における、しごき成形工程を行った状態のカップ状部品の成形装置を示す斜視説明図。The perspective explanatory view which shows the shaping | molding apparatus of the cup-shaped components in the state which performed the ironing shaping | molding process in an Example. 実施例における、ワーク載置工程を行った状態のカップ状部品の成形装置を示す断面説明図。Sectional explanatory drawing which shows the shaping | molding apparatus of the cup-shaped components in the state which performed the workpiece | work mounting process in an Example. 実施例における、ワーク挟持工程を行った状態のカップ状部品の成形装置を示す断面説明図。Sectional explanatory drawing which shows the shaping | molding apparatus of the cup-shaped components of the state which performed the workpiece | work clamping process in an Example. 実施例における、絞り成形工程を行った状態のカップ状部品の成形装置を示す断面説明図。Cross-sectional explanatory drawing which shows the shaping | molding apparatus of the cup-shaped components in the state which performed the draw forming process in an Example. 実施例における、縮管成形工程を行った状態のカップ状部品の成形装置を示す断面説明図。Cross-sectional explanatory drawing which shows the shaping | molding apparatus of the cup-shaped components in the state which performed the reduced tube shaping | molding process in an Example. 実施例における、しごき成形工程を行う前の状態のカップ状部品の成形装置を示す断面説明図。Cross-sectional explanatory drawing which shows the shaping | molding apparatus of the cup-shaped components of the state before performing an ironing shaping | molding process in an Example. 実施例における、しごき成形工程を行った状態のカップ状部品の成形装置を示す断面説明図。Cross-sectional explanatory drawing which shows the shaping | molding apparatus of the cup-shaped components of the state which performed the ironing shaping | molding process in an Example. 実施例における、第１パンチ、絞りパンチスリーブ及び圧縮パンチスリーブの断面形状を示す断面説明図。Cross-sectional explanatory drawing which shows the cross-sectional shape of the 1st punch in an Example, a drawing punch sleeve, and a compression punch sleeve. 従来例における、カップ状部品の成形の流れを示す図で、（ａ）平板状のワーク、（ｂ）予備側壁部を形成したワーク、（ｃ）予備側壁部を突出させたワーク、（ｄ）穴抜き成形を行ったワーク、（ｅ）カップ状部品を示す説明図。FIG. 5 is a diagram showing a flow of molding of a cup-shaped part in a conventional example, (a) a flat plate-shaped workpiece, (b) a workpiece formed with a spare side wall portion, (c) a workpiece with the spare side wall portion projected, (d) Explanatory drawing which shows the workpiece | work which punched and formed, and (e) cup-shaped components.

符号の説明Explanation of symbols

１ カップ状部品の成形装置
２ ダイス
２０ 成形穴
２１ 絞り成形穴部
２２ 縮管成形穴部
２３ しごき成形穴部
３ 第１パンチ
４ 絞りパンチスリーブ
５ 圧縮パンチスリーブ
６ 第２パンチ
８ カップ状部品
８０ ワーク
８１ 底面部
８２ 側壁部
８２Ａ 予備側壁部
８２Ｂ 縮管側壁部
８２１ 開口端部
８３ 角部 DESCRIPTION OF SYMBOLS 1 Cup-shaped component shaping | molding apparatus 2 Dies 20 Molding hole 21 Drawing molding hole part 22 Reduced tube molding hole part 23 Ironing molding hole part 3 1st punch 4 Drawing punch sleeve 5 Compression punch sleeve 6 2nd punch 8 Cup-shaped part 80 Workpiece 81 Bottom face part 82 Side wall part 82A Preliminary side wall part 82B Reduced tube side wall part 821 Open end part 83 Corner part

Claims (7)

底面部と、該底面部の外周端部から立設した環状の側壁部とを有するカップ状部品を成形する方法において、
上記カップ状部品を成形するに当たっては、成形穴を備えたダイスと、該ダイスの上記成形穴内をスライドするよう互いに対向配設した第１パンチ及び第２パンチとを準備し、
上記第１パンチの外周には、上記底面部と上記側壁部との間の角部よりも大きな曲率のスリーブ角部を先端部に形成してなる絞りパンチスリーブを配設し、上記ダイスの上記成形穴には、上記第１パンチに近い側から順に、ストレート状の絞り成形穴部と、該絞り成形穴部と同じ内径から上記第１パンチから遠い側に向けてテーパ状に縮径してなる縮管成形穴部と、該縮管成形穴部よりも縮径してなるストレート状のしごき成形穴部とを形成しておき、
上記第１パンチと上記第２パンチとの間に、平板状のワークを挟持するワーク挟持工程と、
上記第１パンチと上記第２パンチとの間に上記ワークを挟持した状態を維持して、上記ダイスに対して上記第１パンチ、上記第２パンチ及び上記絞りパンチスリーブを前進させ、該絞りパンチスリーブと上記絞り成形穴部とによって上記ワークに絞り成形を行い、環状に立設する予備側壁部を形成する絞り成形工程と、
上記第１パンチと上記第２パンチとの間に上記ワークを挟持した状態を維持して、上記ダイスに対して上記第１パンチ及び上記第２パンチを前進させ、上記第１パンチと上記縮管成形穴部とによって上記予備側壁部に縮管成形を行い、縮管側壁部を形成する縮管成形工程と、
上記第１パンチと上記第２パンチとの間に上記ワークを挟持した状態を維持して、上記ダイスに対して上記第１パンチ及び上記第２パンチをさらに前進させ、上記第１パンチと上記しごき成形穴部とによって上記縮管側壁部にしごき成形を行い、上記側壁部を形成するしごき成形工程とを含むことを特徴とするカップ状部品の成形方法。 In a method of molding a cup-shaped part having a bottom surface portion and an annular side wall portion standing from the outer peripheral end portion of the bottom surface portion,
In forming the cup-shaped part, a die provided with a forming hole, and a first punch and a second punch arranged to face each other so as to slide in the forming hole of the die are prepared,
On the outer periphery of the first punch, a drawing punch sleeve formed by forming a sleeve corner portion having a curvature larger than a corner portion between the bottom surface portion and the side wall portion at the tip portion is provided. In the forming hole, in order from the side closer to the first punch, the diameter of the straight drawn hole is reduced in a tapered shape from the same inner diameter as the drawn hole to the side farther from the first punch. Forming a reduced tube forming hole and a straight ironing formed hole having a diameter smaller than that of the reduced tube forming hole,
A workpiece clamping step of clamping a flat workpiece between the first punch and the second punch;
Maintaining a state in which the workpiece is sandwiched between the first punch and the second punch, the first punch, the second punch, and the drawing punch sleeve are advanced with respect to the die, and the drawing punch A draw forming step of drawing the workpiece with the sleeve and the draw hole and forming a preliminary side wall portion standing in an annular shape;
The state in which the work is sandwiched between the first punch and the second punch is maintained, the first punch and the second punch are advanced with respect to the die, and the first punch and the contracted tube are moved forward. A tube forming step for forming a tube contraction side wall portion by performing tube contraction on the preliminary side wall portion by a forming hole portion; and
Maintaining a state where the work is sandwiched between the first punch and the second punch, the first punch and the second punch are further advanced with respect to the die, and the first punch and the ironing are performed. A method for forming a cup-shaped part, comprising: a ironing process for forming the side wall portion by ironing the reduced tube side wall portion with a forming hole portion. 請求項１において、上記第１パンチと上記絞りパンチスリーブとの間には、圧縮パンチスリーブが配設してあり、
上記しごき成形工程においては、上記圧縮パンチスリーブによって上記縮管側壁部の開口端部を加圧しながら上記しごき成形を行うことを特徴とするカップ状部品の成形方法。 In claim 1, a compression punch sleeve is disposed between the first punch and the drawing punch sleeve,
In the ironing step, the ironing is performed while pressing the open end of the contraction tube side wall with the compression punch sleeve. 請求項２において、上記しごき成形穴部は、上記側壁部に歯面を成形するための歯型断面形状を有しており、
上記第１パンチの外周面は、上記しごき成形穴部と共に上記側壁部に歯面を成形するための歯型断面形状を有しており、
上記圧縮パンチスリーブは、上記しごき成形穴部と上記第１パンチの外周面との間隙に沿った歯型断面形状を有しており、
上記しごき成形工程においては、上記縮管側壁部に歯型しごき成形を行い、上記側壁部に歯面を形成することを特徴とするカップ状部品の成形方法。 In claim 2, the ironing hole has a tooth profile cross-sectional shape for forming a tooth surface on the side wall,
The outer peripheral surface of the first punch has a tooth profile cross-sectional shape for forming a tooth surface on the side wall portion together with the iron forming hole portion,
The compression punch sleeve has a tooth-shaped cross-sectional shape along the gap between the ironing hole and the outer peripheral surface of the first punch,
In the ironing molding step, a cup-shaped part molding method, wherein tooth-type ironing is performed on the side wall of the contraction tube and a tooth surface is formed on the side wall. 請求項３において、上記カップ状部品は、上記側壁部に歯面を有するクラッチハブであることを特徴とするカップ状部品の成形方法。   4. The method for molding a cup-shaped part according to claim 3, wherein the cup-shaped part is a clutch hub having a tooth surface on the side wall portion. 底面部と、該底面部の外周端部から立設した環状の側壁部とを有するカップ状部品を成形する成形装置において、
該成形装置は、成形穴を備えたダイスと、該ダイスの上記成形穴内をスライドするよう互いに対向配設した第１パンチ及び第２パンチとを有しており、
上記第１パンチの外周には、上記底面部と上記側壁部との間の角部よりも大きな曲率のスリーブ角部を先端部に形成してなる絞りパンチスリーブを配設してなり、上記ダイスの上記成形穴には、上記第１パンチに近い側から順に、ストレート状の絞り成形穴部と、該絞り成形穴部と同じ内径から上記第１パンチから遠い側に向けてテーパ状に縮径してなる縮管成形穴部と、該縮管成形穴部よりも縮径してなるストレート状のしごき成形穴部とを形成してなり、
上記成形装置は、上記第１パンチと上記第２パンチとの間に平板状のワークを挟持させ、次いで、上記ダイスの上記絞り成形穴部の終端位置まで上記第１パンチ、上記第２パンチ及び上記絞りパンチスリーブを前進させ、その後、上記ダイスの上記しごき成形穴部の終端位置まで上記第１パンチ及び上記第２パンチを前進させるよう構成してあることを特徴とするカップ状部品の成形装置。 In a molding apparatus for molding a cup-shaped part having a bottom surface portion and an annular side wall portion standing from the outer peripheral end portion of the bottom surface portion,
The molding apparatus includes a die having a molding hole, and a first punch and a second punch that are arranged to face each other so as to slide in the molding hole of the die.
On the outer periphery of the first punch, there is disposed a drawing punch sleeve having a sleeve corner portion having a curvature larger than that of the corner portion between the bottom surface portion and the side wall portion at the tip portion. In the forming hole, in order from the side closer to the first punch, a straight drawn hole portion, and the diameter is reduced in a tapered shape from the same inner diameter as the drawn hole portion toward the side farther from the first punch. And a straight ironing hole formed by reducing the diameter of the reduced tube forming hole.
The molding apparatus sandwiches a plate-like workpiece between the first punch and the second punch, and then the first punch, the second punch, and the end position of the drawing hole portion of the die A cup-shaped part molding apparatus, wherein the drawing punch sleeve is advanced, and then the first punch and the second punch are advanced to a terminal position of the ironing hole of the die. . 請求項５において、上記第１パンチと上記絞りパンチスリーブとの間には、圧縮パンチスリーブが配設してあり、
上記成形装置は、上記第１パンチ及び上記第２パンチを上記ダイスの上記しごき成形穴部内を前進させるときには、上記圧縮パンチスリーブを前進させるよう構成してあることを特徴とするカップ状部品の成形装置。 In claim 5, a compression punch sleeve is disposed between the first punch and the drawing punch sleeve,
The molding apparatus is configured to advance the compression punch sleeve when the first punch and the second punch are advanced in the ironing hole of the die. apparatus. 請求項６において、上記しごき成形穴部は、上記側壁部に歯面を成形するための歯型断面形状を有しており、
上記第１パンチの外周面は、上記しごき成形穴部と共に上記側壁部に歯面を成形するための歯型断面形状を有しており、
上記圧縮パンチスリーブは、上記しごき成形穴部と上記第１パンチの外周面との間隙に沿った歯型断面形状を有していることを特徴とするカップ状部品の成形装置。 In claim 6, the ironing hole has a tooth cross-sectional shape for forming a tooth surface on the side wall,
The outer peripheral surface of the first punch has a tooth profile cross-sectional shape for forming a tooth surface on the side wall portion together with the iron forming hole portion,
2. The cup-shaped component molding apparatus according to claim 1, wherein the compression punch sleeve has a tooth profile cross-sectional shape along a gap between the ironing hole and the outer peripheral surface of the first punch.
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JP2009014167A (en) * 2007-07-09 2009-01-22 Ntn Corp Chain tensioner
CN102626741A (en) * 2012-04-10 2012-08-08 上海交通大学 Drawing compound molding die for shell with tooth form on side wall
WO2013017659A1 (en) * 2011-08-02 2013-02-07 Gottfried Wilhelm Leibniz Universität Hannover Method for producing a component and combined forming tool therefor
JP2014076484A (en) * 2012-10-09 2014-05-01 Kyung Chang Industrial Corp Method for molding tooth form part
JP5610062B2 (en) * 2011-03-24 2014-10-22 アイシン・エィ・ダブリュ株式会社 Tooth profile part manufacturing method, tooth profile part manufacturing apparatus, and tooth profile part
US8875396B2 (en) 2011-03-24 2014-11-04 Aisin Aw Co., Ltd. Manufacturing method for toothed part and manufacturing device for toothed part
KR101461005B1 (en) * 2012-12-12 2014-11-12 (주) 호창엠에프 Manufaturing method for Drum Hub Clutch in vehicles transmission assembly
CN116586497A (en) * 2023-07-17 2023-08-15 协易科技精机(中国)有限公司 Single-station multi-pass deep drawing device

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009014167A (en) * 2007-07-09 2009-01-22 Ntn Corp Chain tensioner
US8221274B2 (en) 2007-07-09 2012-07-17 Ntn Corporation Chain tensioner
JP5610062B2 (en) * 2011-03-24 2014-10-22 アイシン・エィ・ダブリュ株式会社 Tooth profile part manufacturing method, tooth profile part manufacturing apparatus, and tooth profile part
US8875396B2 (en) 2011-03-24 2014-11-04 Aisin Aw Co., Ltd. Manufacturing method for toothed part and manufacturing device for toothed part
WO2013017659A1 (en) * 2011-08-02 2013-02-07 Gottfried Wilhelm Leibniz Universität Hannover Method for producing a component and combined forming tool therefor
CN102626741A (en) * 2012-04-10 2012-08-08 上海交通大学 Drawing compound molding die for shell with tooth form on side wall
JP2014076484A (en) * 2012-10-09 2014-05-01 Kyung Chang Industrial Corp Method for molding tooth form part
KR101461005B1 (en) * 2012-12-12 2014-11-12 (주) 호창엠에프 Manufaturing method for Drum Hub Clutch in vehicles transmission assembly
CN116586497A (en) * 2023-07-17 2023-08-15 协易科技精机(中国)有限公司 Single-station multi-pass deep drawing device

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