JP4796942B2 - Hydroforming apparatus, hydroforming method, and hydroformed product - Google Patents

Hydroforming apparatus, hydroforming method, and hydroformed product Download PDF

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JP4796942B2
JP4796942B2 JP2006311572A JP2006311572A JP4796942B2 JP 4796942 B2 JP4796942 B2 JP 4796942B2 JP 2006311572 A JP2006311572 A JP 2006311572A JP 2006311572 A JP2006311572 A JP 2006311572A JP 4796942 B2 JP4796942 B2 JP 4796942B2
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英幸 萩原
仁 中村
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株式会社浅野
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本発明は、液圧成形加工装置および液圧成形加工方法ならびに液圧成形加工品に関し、詳しくは、複雑で高価な液圧成形装置を必要とすることなく、液圧成形による容易な試作品などの作製を可能にするものに関する。   The present invention relates to a hydroforming apparatus, a hydroforming process, and a hydroformed product, and more particularly, an easy prototype by hydroforming without requiring a complicated and expensive hydroforming apparatus. It relates to what enables the production of

従来、円筒形状の管素材を金型内に収装するとともに、その管素材の内部に高圧の液状材料を供給することにより、その管素材を金型内面に沿うように変形させる液圧成形が知られており、例えば、同一形状が長手方向に連続するベローズ管などに適した製造方法として多用されている（例えば、特許文献１参照）。   Conventionally, a cylindrical tube material is accommodated in a mold, and a high pressure liquid material is supplied to the inside of the tube material to deform the tube material along the inner surface of the mold. For example, it is frequently used as a manufacturing method suitable for a bellows tube having the same shape continuous in the longitudinal direction (see, for example, Patent Document 1).

この種の液圧成形としては、多種多様の工夫がなされている（例えば、特許文献２、３参照）。例えば、下記文献２に記載のものでは、管素材の途中の内周面の周方向に、突出する形状を設けることにより、内部に供給する液状材料を液密にシールすることを可能にして管途中にベローズ形状を形成することができように工夫することが提案されている。また、下記文献３に記載のものでは、管素材に接する金型内面を工夫することにより、液圧成形後のスプリングバックを防止することが提案されている。
特開平１０−２７７６６０号公報 特開２００２−２９５６７６号公報 特開２００５−９５９８３号公報 A wide variety of devices have been made for this type of hydraulic forming (see, for example, Patent Documents 2 and 3). For example, in the thing of the following literature 2, the liquid material supplied inside can be sealed liquid-tightly by providing the shape which protrudes in the circumferential direction of the internal peripheral surface in the middle of a pipe | tube raw material. It has been proposed to devise so that a bellows shape can be formed in the middle. Moreover, in the thing of the following literature 3, it is proposed to prevent the springback after the hydraulic forming by devising the inner surface of the mold that contacts the pipe material.
JP-A-10-277660 JP 2002-295676 A Japanese Patent Application Laid-Open No. 2005-95983

しかしながら、このような従来の液圧成形にあっては、管素材を収装する金型が軸方向に移動して互いに接離可能な複数の割型により構成されており、複雑な成形制御を行っている。すなわち、金型の割型が互いに離隔した状態で、収装する管素材内に液圧を導入することにより、その管素材の割型間を張り出すように変形させた後に、その割型を互いに密接する状態にして金型内面を形成するとともに、その管素材内に高圧の液圧を発生させることにより、その管素材を金型内面に沿うように変形させている。このように、従来の液圧成形では、複雑な金型が必要であるとともに、その金型を稼動させる複雑な制御機構が必要で、結果的に高価になってしまう。   However, in such conventional hydraulic forming, the mold for housing the pipe material is composed of a plurality of split molds that move in the axial direction and can be brought into and out of each other. Is going. In other words, with the mold split molds separated from each other, by introducing a hydraulic pressure into the pipe material to be accommodated, the mold is deformed so as to project between the split molds of the pipe material, and then the split mold is The inner surface of the mold is formed so as to be in close contact with each other, and a high hydraulic pressure is generated in the tube material, so that the tube material is deformed along the inner surface of the mold. Thus, the conventional hydraulic molding requires a complicated mold and a complicated control mechanism for operating the mold, resulting in an increase in cost.

このため、多種多様な製品や試作品のように少量で十分なものを液圧成型により安価に作製することができない。このことから、製品特性として液圧成形が適している場合でも少量であるために採用することができなかったり、また、液圧成形により大量生産する予定のものでも削り出しでしか試作することができずに、信頼性の高い評価試験を行うことができない、という問題があった。   For this reason, it is not possible to produce a small amount of sufficient products such as a wide variety of products and prototypes at low cost by hydraulic molding. Therefore, even if hydraulic molding is suitable as a product characteristic, it is not possible to adopt it because it is small, and even those that are scheduled to be mass produced by hydraulic molding can be prototyped only by cutting There was a problem that a reliable evaluation test could not be performed.

そこで、本発明は、複雑な金型を必要とすることなく、また、複雑な制御装置を必要とすることのない、液圧成形加工を実現することにより、多種多様な製品や試作品などの少量のものを液圧成形により作製可能にして、所望の特性を有する製品や試作品などを安価に作製することのできる液圧成形加工装置および液圧成形加工方法ならびに液圧成形加工品を提供することを目的とする。   Therefore, the present invention realizes a wide variety of products, prototypes, etc. by realizing the hydraulic forming process without requiring a complicated mold and without requiring a complicated control device. Providing liquid molding equipment, hydraulic molding processing methods, and hydraulic molding products that can produce small quantities of products by hydraulic molding, and produce products and prototypes with the desired characteristics at low cost The purpose is to do.

上記課題を解決する液圧成形加工装置の第１の発明は、筒状素材を収装して所望の形状に成形する成形面を有する金型と、該金型内に収装された筒状素材の被加工部分が成形面により画成される成形部内に位置するように該筒状素材を支持する支持部材と、金型内に収装された筒状素材内に注ぎ込む液状材料と、筒状素材内に差し込まれて液状材料を加圧することにより該筒状素材の被加工部分を塑性変形させる液圧を発生させる加圧ピン部材と、を備えており、金型は、筒状素材の一部を収装するとともに該筒状素材の一部を塑性変形させる目的形状の成形面により画成される成形部、該成形部に連続して目的形状に形成された後の筒状素材を収装する空間を画成する後収装部、および、該後収装部の反対側で成形部に連続して目的形状に形成される前の筒状素材を収装する空間を画成する前収装部を備えることを特徴とするものである。   A first invention of a hydroforming apparatus that solves the above problems includes a mold having a molding surface that accommodates a cylindrical material and molds it into a desired shape, and a cylindrical shape that is accommodated in the mold. A support member for supporting the cylindrical material so that a processed portion of the material is located in a molding part defined by the molding surface, a liquid material poured into the cylindrical material accommodated in the mold, and a cylinder A pressure pin member that generates a fluid pressure that plastically deforms a processed portion of the cylindrical material by being inserted into the cylindrical material and pressurizing the liquid material, and the mold is made of the cylindrical material. A molded part defined by a molding surface of a target shape that accommodates a part and plastically deforms a part of the cylindrical material, and a cylindrical material after being formed into a target shape continuously to the molding part. A rear housing part that defines a space to be accommodated, and a desired shape continuously to the molding part on the opposite side of the rear housing part It is characterized in further comprising a housed unit before defining a space for accommodated previous tubular material made.

この発明では、筒状素材を金型内にセットして、その金型の成形部に筒状素材の被加工部分が位置するように支持部材に支持させるとともに、その筒状素材の被加工部分に隣接する箇所を前収装部や後収装部に収装させた状態にした後に、その筒状素材内に液状材料を注入して加圧ピン部材で加圧することにより被加工部分を塑性変形させる液圧を発生させる。このため、筒状素材は、塑性変形前に位置する前収装部や塑性変形後に位置する後収装部では外方に張り出す方向に変形することが制限されつつ、その金型の成形部に位置する被加工部分に、目的形状の成形面に接近する方向の液圧が加わって塑性変形される。そして、この被加工部分が後収装部に位置するようにずらして筒状素材を金型内にセットし直す作業を繰り返すことにより、筒状素材の外面を目的形状に塑性変形させる液圧成形加工を行うことができる。したがって、成形部と共に前収装部と後収装部を有するだけの金型内に筒状素材をセットして液状材料を注入し加圧ピン部材で加圧するだけで、割型を互いに接離させるような複雑な装置を準備することなく、筒状素材を所望の形状に液圧成形により加工することができ、多様な形状の試作品などでも安価に作製することができる。ここで、筒状素材としては、円筒形に限るものではなく、例えば、四角などの多角形の筒状素材でも適用することは可能であるが、その内面に液圧を均一に加えることができることから、円筒形状の筒状素材の方が精度よく成形加工することができる。また、金型の成形部や後収装部を交換することにより異形が連続する形状に成形加工することもでき、多様な形状でも安価に作製することができる。   In this invention, the cylindrical material is set in the mold, and supported by the support member so that the processed part of the cylindrical material is positioned in the molding part of the mold, and the processed part of the cylindrical material The part to be processed is made plastic by injecting a liquid material into the cylindrical material and pressurizing it with a pressure pin member after placing the part adjacent to the front part and the rear part. Generate hydraulic pressure to deform. For this reason, the cylindrical material is limited to be deformed in the direction of projecting outward in the pre-collection part located before the plastic deformation and the post-containment part located after the plastic deformation, and the molding part of the mold The part to be processed is plastically deformed by applying a hydraulic pressure in a direction approaching the molding surface of the target shape. Then, hydraulic forming that plastically deforms the outer surface of the cylindrical material into the target shape by repeating the operation of shifting the workpiece to be positioned in the rear housing part and resetting the cylindrical material in the mold. Processing can be performed. Therefore, the split molds can be contacted and separated from each other simply by setting a cylindrical material in a mold that only has a pre-acquisition part and a rear-acquisition part together with a molding part, injecting a liquid material, and pressurizing with a pressure pin member Without preparing such a complicated apparatus, the cylindrical material can be processed into a desired shape by hydraulic forming, and various shapes of prototypes can be manufactured at low cost. Here, the cylindrical material is not limited to a cylindrical shape, and for example, it is possible to apply a polygonal cylindrical material such as a square, but the pressure can be uniformly applied to the inner surface thereof. Therefore, the cylindrical cylindrical material can be molded with higher accuracy. In addition, by changing the molding part and the post-collecting part of the mold, it can be molded into a shape in which irregular shapes are continuous, and various shapes can be produced at low cost.

上記課題を解決する液圧成形加工装置の第２の発明は、上記第１の発明の特定事項に加え、前記金型は、前収装部の内面が成形前の筒状素材の外面に接近して対面する形状に形成されているのに対して、成形部および後収装部の内面が目的形状の実質同一形状に形成されて連続していることを特徴とするものである。   In addition to the specific matter of the first invention, the second invention of the hydroforming apparatus that solves the above problems is that the inner surface of the pre-collecting portion of the mold approaches the outer surface of the tubular material before molding. In contrast, the inner surface of the molded part and the rear receiving part is formed in the same shape as the target shape and is continuous.

この発明では、金型内にセットした筒状素材は、成形部で塑性変形された被加工部分が同一形状の後収装部内に収装される。したがって、実質同一の目的形状が延在方向に連続するように筒状素材を液圧成形加工することができ、例えば、ベローズ管などを液圧成形加工により容易に作製することができる。   According to the present invention, the cylindrical material set in the mold is accommodated in the post-acquisition part having the same shape as the processed part plastically deformed in the molding part. Therefore, the cylindrical material can be subjected to a hydraulic forming process so that substantially the same target shape continues in the extending direction. For example, a bellows tube or the like can be easily manufactured by a hydraulic forming process.

上記課題を解決する液圧成形加工装置の第３の発明は、上記第１または第２の発明の特定事項に加え、前記金型の後収装部内に着脱可能に設置して、成形前の筒状素材の外面に接近して対面する空間を形成する駒部材を有することを特徴とするものである。   In addition to the specific matter of the first or second invention, the third invention of the hydroforming apparatus that solves the above-mentioned problems is detachably installed in the rear housing part of the mold, It has the piece member which forms the space which approaches the outer surface of a cylindrical raw material and faces.

この発明では、金型内にセットした筒状素材は、駒部材を装着した後収装部内に未加工部分を収装する状態で、隣接する被加工部分を成形部で塑性変形させることができる。したがって、筒状素材の先端側端部を無理に塑性変形させる必要がなく、精度の劣る形状を成形して満足な精度の部分のみを切り出すなどの後処理が必要になったり、その後処理を難しくしてしまうことを回避することができる。   In this invention, the cylindrical material set in the mold can be plastically deformed in the molding portion of the adjacent processed portion in a state where the unprocessed portion is accommodated in the accommodating portion after the piece member is mounted. . Therefore, it is not necessary to forcibly plastically deform the tip side end of the cylindrical material, and post-processing such as forming a shape with inferior accuracy and cutting out only a portion with satisfactory accuracy is required, and subsequent processing is difficult. Can be avoided.

上記課題を解決する液圧成形加工装置の第４の発明は、上記第１から第３のいずれかの発明の特定事項に加え、前記金型内に収装された筒状素材の開口端側端面を押圧する押圧部材を備えることを特徴とするものである。   In addition to the specific matters of any one of the first to third inventions, a fourth invention of a hydroforming apparatus that solves the above-mentioned problems is an open end side of a cylindrical material housed in the mold. A pressing member that presses the end face is provided.

この発明では、金型内にセットした筒状素材内の液状材料を加圧ピン部材で加圧することにより被加工部分を塑性変形させる液圧を発生させるのと同時に、押圧部材がその筒状素材の開口端側端面を押圧する。このため、筒状素材は、液状材料の液圧により金型の成形部だけ（前収装部と後収装部の間だけ）を延展させて塑性変形されるのではなく、その成形部に隣接する前収装部側からも素材が押し込まれつつ延展されて塑性変形される。したがって、筒状素材が延展性に優れない材料であっても、成形部に対応する被加工部分のみが無理に外方に延展されるために割れてしまうことを少なくすることができ、その成形部における塑性変形に追随するように素材を押し込んで所望の形状に塑性変形させることができる。ここで、加圧ピン部材による筒状素材内の液状材料の加圧と、押圧部材によるその筒状素材の開口端側端面の押圧を同時に行うというのは、同時に開始するということを意味するものではなく、並行して行うということを意味しており、いずれか一方を早期に開始してもよいし、また、同時に開始してもよいことは言うまでもない。   In this invention, the liquid material in the cylindrical material set in the mold is pressed by the pressure pin member to generate a hydraulic pressure that plastically deforms the processed portion, and at the same time, the pressing member is the cylindrical material. The opening end side end face is pressed. For this reason, the cylindrical material is not plastically deformed by extending only the molding part of the mold (between the front and rear housing parts) due to the liquid pressure of the liquid material, but not in the molding part. The material is extended and plastically deformed while being pushed in from the adjacent pre-collection part side. Therefore, even if the cylindrical material is a material that is not excellent in spreadability, it can be reduced that only the part to be processed corresponding to the molded part is forcibly extended outward, so that it is not broken. The material can be pushed in and plastically deformed into a desired shape so as to follow the plastic deformation in the part. Here, simultaneously pressing the liquid material in the cylindrical material by the pressing pin member and pressing the opening end side end surface of the cylindrical material by the pressing member means that they start simultaneously. However, it means that they are performed in parallel, and it is needless to say that either one of them may be started early or at the same time.

上記課題を解決する液圧成形加工装置の第５の発明は、上記第４の発明の特定事項に加え、前記金型は、前収装部に連続して当該金型本体の端部から露出する筒状素材を収装しつつ該筒状素材の開口端側端面を露出させるように長さの異なる複数種の収装空間を画成する補助金型を有しており、前記支持部材は、筒状素材の長さ方向の所望の位置を被加工部分として金型の成形部内に位置させるように長さの異なる複数種を備えることを特徴とするものである。   In addition to the specific matters of the fourth invention, the fifth invention of the hydroforming apparatus that solves the above-mentioned problems is such that the mold is exposed from the end of the mold body continuously to the pre-collecting section. The supporting member has an auxiliary mold that defines a plurality of types of storage spaces having different lengths so as to expose the end surface on the opening end side of the cylindrical material while the cylindrical material is stored. A plurality of types having different lengths are provided so that a desired position in the length direction of the cylindrical material is positioned as a part to be processed in the molding part of the mold.

この発明では、金型本体の前収装部を延長する補助金型が取り付けられて、その補助金型の端部から開口端側端部を露出させることができる。このため、支持部材により支持される筒状素材の金型内から露出する長さが変化したとしても、その開口端側端部のみを露出させて押圧部材により押圧することができる。したがって、金型本体の前収装部から露出する部分（筒状素材）が押圧部材による押圧力で変形して、所謂、座屈してしまうことを防止することができ、その前収装部から露出する部分も前収装部や成形部に位置させて液圧成形による加工を行うことができる。   In this invention, the auxiliary mold which extends the pre-collection part of the mold body is attached, and the opening end side end can be exposed from the end of the auxiliary mold. For this reason, even if the length exposed from the inside of the mold of the cylindrical material supported by the support member changes, only the opening end side end portion can be exposed and pressed by the pressing member. Therefore, it is possible to prevent the portion exposed from the pre-collecting portion of the mold body (cylindrical material) from being deformed by the pressing force of the pressing member and so-called buckling, and from the pre-collecting portion. The exposed part can also be positioned in the pre-collection part or the molding part and processed by hydraulic molding.

上記課題を解決する液圧成形加工装置の第６の発明は、上記第１から第５のいずれかの発明の特定事項に加え、前記金型と支持部材がプレス装置の基台上に設置されており、前記加圧ピン部材がプレス装置の加圧ベース部材に設置されていることを特徴とするものである。   According to a sixth invention of a hydroforming apparatus that solves the above-mentioned problems, in addition to the specific matters of any of the first to fifth inventions, the mold and the support member are installed on a base of a press apparatus. The pressure pin member is installed on a pressure base member of a press apparatus.

この発明では、プレス装置の基台上に設置した金型内に筒状素材をセットして支持部材に支持させるとともに、そのプレス装置の加圧ベース部材に設置されている加圧ピン部材を降下させてその筒状素材内の液状材料を加圧して液圧を発生させることができ、その金型の成形部に位置する筒状素材の被加工部分を塑性変形させることができる。すなわち、簡易な金型を汎用のプレス装置に設置するだけで、割型を互いに接離させるような複雑な制御を行うことなく、筒状素材を所望の形状に液圧成形により加工することができる。したがって、より簡易に液圧成形を利用して試作品など安価に作製することができる。   In this invention, a cylindrical material is set in a mold installed on a base of a press device and supported by a support member, and a pressure pin member installed on a press base member of the press device is lowered. Thus, the liquid material in the cylindrical material can be pressurized to generate a hydraulic pressure, and the processed part of the cylindrical material located in the molding part of the mold can be plastically deformed. In other words, by simply installing a simple mold in a general-purpose press, the cylindrical material can be processed into a desired shape by hydraulic molding without performing complicated control to bring the split molds into and out of each other. it can. Therefore, it is possible to produce a prototype or the like at a low cost by using hydraulic molding more easily.

上記課題を解決する液圧成形加工装置の第７の発明は、上記第６の発明の特定事項に加え、前記筒状素材内に差し込まれる加圧ピン部材に外装された状態で該筒状素材の開口端側端面に当接して押圧する押圧部材がプレス装置の加圧ベース部材側に設置されているとともに、該押圧部材と加圧ベース部材との間には弾性変形する材料よりなるスペーサー部材が介装されていることを特徴とするものである。   In addition to the specific matters of the sixth invention, the seventh invention of the hydroforming apparatus that solves the above-mentioned problems is the tubular material in a state of being covered with a pressure pin member inserted into the tubular material. A pressing member that abuts and presses against the opening end side end face of the press is installed on the pressure base member side of the press device, and a spacer member made of a material that is elastically deformed between the pressing member and the pressure base member Is provided.

この発明では、内部の液状材料を加圧ピン部材により加圧されて液圧の発生する筒状素材は、開口端側端面に押圧部材が当接して押圧されることにより、その押圧力により金型の成形部内に押し込んで塑性変形させることができ、加圧ベース部材との間のスペーサー部材の弾性力によりその筒状素材の開口端側端面に押圧部材が当接して所望の押圧力を発生させるタイミングを調整することができる。したがって、筒状素材内の液状材料を加圧ピン部材により加圧するタイミングと、その筒状素材の開口端側端面を押圧部材により本格的に押圧するタイミングと、を調整することができ、金型の成形部内で筒状素材を塑性変形させる液圧と押圧とを働かせるタイミングを調整して、信頼性高く、また、精度よく筒所素材を成形部内で塑性変形させることができる。   According to the present invention, the cylindrical material in which the liquid material is pressurized by the pressure pin member is pressed against the opening end side end surface so that the pressure is applied to the cylindrical material. It can be pushed into the molded part of the mold and plastically deformed, and the pressing member abuts the opening end side end surface of the cylindrical material by the elastic force of the spacer member between the pressing base member and generates the desired pressing force The timing to be adjusted can be adjusted. Therefore, it is possible to adjust the timing of pressing the liquid material in the cylindrical material with the pressing pin member and the timing of pressing the opening end side end surface of the cylindrical material with the pressing member. By adjusting the timing at which the hydraulic pressure and pressure for plastically deforming the cylindrical material in the molding part are adjusted, the cylindrical material can be plastically deformed in the molding part with high reliability and accuracy.

上記課題を解決する液圧成形加工装置の第８の発明は、上記第６または第７の発明の特定事項に加え、前記金型は、成形部、後収装部および前収装部により画成する空間内に、部材を着脱可能に開閉するパーティング面同士を互いに近接または離隔させる型押さえ装置に固定されていることを特徴とするものである。   In addition to the specific matters of the sixth or seventh invention, the eighth invention of the hydroforming apparatus that solves the above-mentioned problems is characterized in that the mold is defined by a molding part, a rear collector part, and a front collector part. In the space formed, it is fixed to the mold pressing device which makes the parting surfaces which open and close a member detachably approach or separate from each other.

この発明では、プレス装置の基台上に設置した金型を型押さえ装置により開閉することができ、その金型の後収装部内に筒状素材の成形済みの部分を収装させてその型押さえ装置により閉じるだけで、繰り返し液圧成形加工を行うことができる。したがって、より容易かつ簡易に筒状素材を所望の形状に液圧成形により加工することができる。   In this invention, the mold installed on the base of the press apparatus can be opened and closed by the mold pressing apparatus, and the molded part of the cylindrical material is accommodated in the rear collection part of the mold. By simply closing with a pressing device, it is possible to repeatedly perform hydroforming. Therefore, the cylindrical material can be processed into a desired shape by hydraulic molding more easily and simply.

上記課題を解決する液圧成形加工方法の第１の発明は、筒状素材の一部を収装するとともに該筒状素材の一部を塑性変形させる目的形状の成形面により画成される成形部と、該成形部に連続して目的形状に形成された後の筒状素材を収装する空間を画成する後収装部と、該後収装部の反対側で成形部に連続して目的形状に形成される前の筒状素材を収装する空間を画成する前収装部と、を備える金型を準備して、該金型の成形部に筒状素材の底側に位置する未加工部分が対応するように該筒状素材をセットするとともに当該筒状素材内に液状材料を収容した後に、該筒状素材内の液状材料を加圧して当該筒状素材の被加工部分を金型の成形部の成形面に接近させる方向の液圧を発生させることにより、当該筒状素材を金型の成形部の成形面に沿うように塑性変形させる液圧成形による一部加工操作を行い、この後に、金型の成形部を開放して筒状素材の底側に位置する未加工部分を該金型の成形部に対応するように当該筒状素材をセットし直し、以降同様に、該筒状素材内に収容する液状材料を加圧して当該筒状素材の被加工部分を塑性変形させる液圧を発生させることにより、当該筒状素材を金型の成形部の成形面に沿うように塑性変形させる液圧成形による一部加工操作を行い、この液圧成形による一部加工操作を繰り返すことによって、筒状素材の長さ方向に金型の成形部の成形面を転写した被加工部分の連続する成形品を作製することを特徴としている。   According to a first aspect of the hydroforming method for solving the above-described problems, molding is defined by a molding surface having a target shape that accommodates a part of the cylindrical material and plastically deforms a part of the cylindrical material. A rear housing portion that defines a space for housing the tubular material after being formed into a target shape continuously with the molding portion, and a molding portion on the opposite side of the rear housing portion. Preparing a mold having a pre-collecting portion that defines a space for accommodating the cylindrical material before being formed into a target shape, and forming a mold portion of the mold on the bottom side of the cylindrical material. The cylindrical material is set so that the unprocessed portion located corresponds, and after the liquid material is accommodated in the cylindrical material, the liquid material in the cylindrical material is pressurized to process the cylindrical material By generating a hydraulic pressure in a direction to bring the part closer to the molding surface of the molding part of the mold, the cylindrical material is placed on the molding surface of the molding part of the mold. A part of the processing is performed by hydraulic forming to plastically deform, and after that, the mold part of the mold is opened and the unprocessed part located on the bottom side of the cylindrical material corresponds to the mold part of the mold. By resetting the tubular material so as to, by similarly generating a hydraulic pressure that pressurizes the liquid material accommodated in the tubular material and plastically deforms the processed portion of the tubular material, By performing a partial processing operation by hydraulic forming that plastically deforms the cylindrical material along the molding surface of the molding part of the mold and repeating this partial processing operation by hydraulic forming, the length of the cylindrical material is increased. It is characterized in that a molded product having a continuous part to be processed, in which the molding surface of the molding part of the mold is transferred in the vertical direction, is produced.

この発明では、筒状素材を金型内にセットして、その金型の成形部に筒状素材の被加工部分が位置するように支持部材に支持させるとともに、その筒状素材の被加工部分に隣接する箇所を前収装部内や後収装部に収装させた状態にした後に、その筒状素材内に液状材料を注入して加圧ピン部材で加圧し被加工部分を塑性変形させる液圧を発生させることにより、塑性変形前に位置する前収装部や塑性変形後に位置する後収装部では外方に張り出す方向に変形することを制限しつつ、その金型の成形部に位置する被加工部分に、目的形状の成形面に接近する方向の液圧を加えて塑性変形させることができる。そして、この被加工部分が後収装部に位置するようにずらして筒状素材を金型内にセットし直す作業を繰り返すことにより、筒状素材の外面を目的形状に塑性変形させる液圧成形加工を行うことができる。したがって、成形部と共に前収装部と後収装部を有するだけの金型内に筒状素材をセットして液状材料を注入し加圧ピン部材で加圧するだけで、割型を互いに接離させるような複雑な制御を行うことなく、筒状素材を所望の形状に液圧成形により加工することができ、多様な形状の試作品などでも安価に作製することができる。ここで、筒状素材としては、円筒形に限るものではなく、例えば、四角などの多角形の筒状素材でも適用することは可能であるが、その内面に液圧を均一に加えることができることから、円筒形状の筒状素材の方が精度よく成形加工することができる。また、金型の成形部や後収装部を交換することにより異形が連続する形状に成形加工することもでき、多様な形状でも安価に作製することができる。   In this invention, the cylindrical material is set in the mold, and supported by the support member so that the processed part of the cylindrical material is positioned in the molding part of the mold, and the processed part of the cylindrical material After placing the portion adjacent to the inside of the pre-acquisition part or the rear-acquisition part, a liquid material is injected into the cylindrical material and pressed with a pressure pin member to plastically deform the part to be processed By generating hydraulic pressure, the pre-collection part located before the plastic deformation and the post-collection part located after the plastic deformation are restricted from deforming in the direction protruding outward, and the molding part of the mold Can be plastically deformed by applying a hydraulic pressure in the direction approaching the molding surface of the target shape to the work piece located at the position. Then, hydraulic forming that plastically deforms the outer surface of the cylindrical material into the target shape by repeating the operation of shifting the workpiece to be positioned in the rear housing part and resetting the cylindrical material in the mold. Processing can be performed. Therefore, the split molds can be contacted and separated from each other simply by setting a cylindrical material in a mold that only has a pre-acquisition part and a rear-acquisition part together with a molding part, injecting a liquid material, and pressurizing with a pressure pin member Without performing complicated control, the cylindrical material can be processed into a desired shape by hydraulic forming, and various shapes of prototypes can be manufactured at low cost. Here, the cylindrical material is not limited to a cylindrical shape, and for example, it is possible to apply a polygonal cylindrical material such as a square, but the pressure can be uniformly applied to the inner surface thereof. Therefore, the cylindrical cylindrical material can be molded with higher accuracy. In addition, by changing the molding part and the post-collecting part of the mold, it can be molded into a shape in which irregular shapes are continuous, and various shapes can be produced at low cost.

上記課題を解決する液圧成形加工方法の第２の発明は、上記第１の発明の特定事項に加え、前記筒状素材内の液状材料を加圧するのと同時に、該筒状素材の開口端側端面を押圧することにより、当該筒状素材を金型の成形部の成形面に沿うように塑性変形させる液圧成形による一部加工操作を行うことを特徴としている。   In addition to the specific matter of the first invention, the second invention of the hydroforming method that solves the above-mentioned problem is that the liquid material in the tubular material is pressurized and at the same time the open end of the tubular material. It is characterized in that a partial processing operation is performed by hydraulic forming that plastically deforms the cylindrical material along the molding surface of the molding part of the mold by pressing the side end surface.

この発明では、金型内にセットした筒状素材内の液状材料を加圧ピン部材で加圧することにより被加工部分を塑性変形させる液圧を発生させるのと同時に、押圧部材がその筒状素材の開口端側端面を押圧することにより、液状材料の液圧により金型の成形部だけ（前収装部と後収装部の間だけ）を延展させて塑性変形させるのではなく、その成形部に隣接する前収装部側からも素材を押し込みつつ延展させて塑性変形させることができる。したがって、筒状素材が延展性に優れない材料であっても、成形部に対応する被加工部分のみが無理に外方に延展されるために割れてしまうことを少なくすることができ、その成形部における塑性変形に追随するように素材を押し込んで所望の形状に塑性変形させることができる。ここで、加圧ピン部材による筒状素材内の液状材料の加圧と、押圧部材によるその筒状素材の開口端側端面の押圧を同時に行うというのは、同時に開始するということを意味するものではなく、並行して行うということを意味しており、いずれか一方を早期に開始してもよいし、また、同時に開始してもよいことは言うまでもない。   In this invention, the liquid material in the cylindrical material set in the mold is pressed by the pressure pin member to generate a hydraulic pressure that plastically deforms the processed portion, and at the same time, the pressing member is the cylindrical material. By pressing the end face of the opening end side of the mold, only the molding part of the mold (between the pre-collection part and the back-containment part) is extended and plastically deformed by the liquid pressure of the liquid material. The material can be extended while being pushed in from the side of the pre-collection part adjacent to the part, and can be plastically deformed. Therefore, even if the cylindrical material is a material that is not excellent in spreadability, it can be reduced that only the part to be processed corresponding to the molded part is forcibly extended outward, so that it is not broken. The material can be pushed in and plastically deformed into a desired shape so as to follow the plastic deformation in the part. Here, simultaneously pressing the liquid material in the cylindrical material by the pressing pin member and pressing the opening end side end surface of the cylindrical material by the pressing member means that they start simultaneously. However, it means that they are performed in parallel, and it is needless to say that either one of them may be started early or at the same time.

上記課題を解決する液圧成形加工方法の第３の発明は、上記第１または第２の発明の特定事項に加え、上記の第１から第８のいずれかの発明の液圧成形加工装置により液圧成形による一部加工操作を繰り返し行うことを特徴としている。   According to a third aspect of the hydraulic forming method for solving the above problems, in addition to the specific matter of the first or second aspect of the invention, there is provided a hydraulic forming apparatus according to any of the first to eighth aspects of the invention. It is characterized in that a partial processing operation by hydraulic forming is repeatedly performed.

この発明では、上記の液圧成形加工装置の発明を使用して上記の液圧成形加工方法による作用効果を得ることができ、その繰り返しにより筒状素材を液圧成形加工することができる。したがって、筒状素材を液圧成形により所望の形状に簡易かつ容易に、また安価に加工することができる。   In the present invention, the effects of the above-described hydraulic forming method can be obtained by using the invention of the above-described hydraulic forming apparatus, and the cylindrical material can be subjected to the hydraulic forming process by repeating the operation. Therefore, a cylindrical material can be processed into a desired shape simply, easily and inexpensively by hydraulic molding.

上記課題を解決する液圧成形加工品の第１の発明は、上記の第１から第３のいずれかの発明の液圧成形加工方法により液圧成形加工されることにより筒状素材の長さ方向に被加工部分が連続することを特徴とするものである。   The first invention of a hydroformed product that solves the above-described problem is the length of the cylindrical material by being hydroformed by the hydroforming method of any one of the first to third inventions. The part to be processed is continuous in the direction.

この発明では、上記の液圧成形加工方法による作用効果を得つつ、液圧成形による一部加工操作を繰り返し行うことにより、筒状素材の長さ方向に被加工部分が連続する成形加工品を作製することができる。したがって、簡易かつ容易な液圧成形により所望の形状に加工した筒状素材を安価に得ることができる。   According to the present invention, a molded product in which a part to be processed is continuous in the length direction of a cylindrical material is obtained by repeatedly performing a partial machining operation by hydraulic molding while obtaining the effects of the above hydraulic molding method. Can be produced. Therefore, a cylindrical material processed into a desired shape by simple and easy hydraulic forming can be obtained at low cost.

このように本発明によれば、成形部の前後に前収装部と後収装部を有する金型内に筒状素材を繰り返しセットして液圧を発生させることにより、その金型の成形部に位置する筒状素材の被加工部分を液圧成形することができ、割型を互いに接離させるような複雑で高価な装置を準備するなどすることなく、所望の目的形状の連続する成形品を簡易な金型で容易に作製することができる。したがって、削り出しなどによらずに所望の特性を有する成形品を作製して評価することができ、また、少量の多種多様な製品や試作品などを安価に作製することができる。   As described above, according to the present invention, molding of a mold is performed by repeatedly setting a cylindrical material in a mold having a front and a rear housing part before and after the molding part to generate a hydraulic pressure. The part to be processed of the cylindrical material positioned in the part can be formed by hydraulic pressure, and the desired target shape can be continuously formed without preparing a complicated and expensive device for bringing the split molds into and out of each other. The product can be easily produced with a simple mold. Accordingly, it is possible to produce and evaluate a molded product having desired characteristics without being cut out, and to produce a small amount of various products and prototypes at low cost.

以下、本発明の最良の実施形態を図面に基づいて説明する。図１〜図２１は本発明に係る液圧成形加工装置および液圧成形加工方法並びに液圧成形加工品の一実施形態を示す図である。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the invention will be described with reference to the drawings. 1 to 21 are views showing an embodiment of a hydroforming apparatus, a hydroforming process, and a hydroformed product according to the present invention.

図１において、液圧成形加工装置は、図２に示す有底の円筒形状に形成された管素材（筒状素材）のワークＷを金型１１にセットしてゼリー材料１２（図３を参照）を注入し加圧ピン部材１３を差し込むことによりその内部に液圧を発生させるように構築されており、そのワークＷを内部の液圧により金型１１の成形面に沿うように塑性変形して所望の形状に成形加工することができる。ここで、ゼリー材料１２は、所望の流動性を有するゲル状の液状材料であり、例えば、洗濯糊に適量のホウ酸水を混ぜて所望の粘性を有するように作製すればよい。   In FIG. 1, the hydroforming apparatus sets a workpiece W of a tube material (cylindrical material) formed in a bottomed cylindrical shape shown in FIG. 2 in a mold 11 and a jelly material 12 (see FIG. 3). ) And the pressure pin member 13 is inserted to generate a hydraulic pressure therein, and the workpiece W is plastically deformed along the molding surface of the mold 11 by the internal hydraulic pressure. Can be formed into a desired shape. Here, the jelly material 12 is a gel-like liquid material having a desired fluidity. For example, the jelly material 12 may be prepared so as to have a desired viscosity by mixing an appropriate amount of boric acid water with laundry paste.

金型１１は、汎用のプレス装置１００のダイベースプレート（基台）１０１にネジ止め固定された型押さえ装置１０２により後述する成形空間Ｓｆ（図５を参照）を開閉可能にセットされており、この型押さえ装置１０２の押さえ部１０２ａを離隔方向に移動させることによりパーティング面１１ａを互いに離隔させて成形空間Ｓｆを開放する一方、その押さえ部１０２ａを接近方向に移動させることによりパーティング面１１ａを互いに密接させて成形空間Ｓｆを画成する。   The mold 11 is set so that a molding space Sf (see FIG. 5), which will be described later, can be opened and closed by a mold pressing device 102 fixed by screws to a die base plate (base) 101 of a general-purpose press device 100. By moving the pressing part 102a of the mold pressing device 102 in the separating direction, the parting surfaces 11a are separated from each other to open the molding space Sf, while the pressing part 102a is moved in the approaching direction to move the parting surface 11a. A molding space Sf is defined in close contact with each other.

この金型１１側には、図３に示すように、その金型１１の内部に画成する成形空間Ｓｆ内に内装してワークＷを所望の高さに位置決めする支持部材１４と、金型１１の上面１１ｂ上に設置されて支持部材１４により支持されることによりその金型１１の上面１１ｂから突出するワークＷの収装空間Ｓｃ（図８を参照）を内部に画成する補助金型１５と、その金型１１内部の成形空間Ｓｆ内に設置する図１０に示す駒部材１６と、を備えている。   As shown in FIG. 3, on the side of the mold 11, a support member 14 for positioning the work W at a desired height by being installed in a molding space Sf defined inside the mold 11, and the mold The auxiliary mold that defines the receiving space Sc (see FIG. 8) of the workpiece W protruding from the upper surface 11b of the mold 11 by being installed on the upper surface 11b of the mold 11 and supported by the support member 14. 15 and the piece member 16 shown in FIG. 10 installed in the molding space Sf inside the mold 11.

一方、加圧ピン部材１３は、プレス装置１００のパンチ１１２の先端に固設されており、このパンチ１１２は、ダイベースプレート１０１に向って昇降するベースプレート（加圧ベース部材）１１１に設置されることにより金型１１に向って接離する。ここで、プレス装置１００は、ベースプレート１１１に対して平行の姿勢のまま上下方向に移動自在に支持された押し込みプレート１１３を備えており、押し込みプレート１１３は、パンチ１１２とは別にプレス対象物を加圧して塑性変形させるように動作する。なお、押し込みプレート１１３は、中心に開口するパンチ用挿通穴１１３ａ内にパンチ１１２を相対移動自在に内装しているとともに、このパンチ用挿通穴１１３ａを中心とする対称位置に開口する一対のスライド用挿通穴１１３ｂ（図４を参照）内に一対のスライド棒１１４を相対移動自在に内装しており、そのスライド棒１１４先端の大径部１１４ａに衝止されることによりベースプレート１１１に対して平行な姿勢を維持しつつ吊り下げられた状態で上下方向に移動自在に取り付けられている。   On the other hand, the pressure pin member 13 is fixed to the tip of the punch 112 of the press apparatus 100, and the punch 112 is installed on a base plate (pressure base member) 111 that moves up and down toward the die base plate 101. Is moved toward and away from the mold 11. Here, the pressing device 100 includes a pressing plate 113 that is supported so as to be movable in the vertical direction while maintaining a posture parallel to the base plate 111, and the pressing plate 113 adds a press object separately from the punch 112. Operates to compress and deform plastically. The push-in plate 113 includes a punch 112 in a punch insertion hole 113a that opens to the center, and a pair of slides that are opened at symmetrical positions with the punch insertion hole 113a as a center. A pair of slide bars 114 are mounted in the insertion hole 113b (see FIG. 4) so as to be relatively movable, and are parallel to the base plate 111 by being stopped by the large-diameter portion 114a at the tip of the slide bar 114. It is attached so as to be movable in the vertical direction while being suspended while maintaining its posture.

この加圧ピン部材１３側には、図４に示すように、ワークＷの開口端側端面Ｗｅに当接して押圧する押圧部材１８と、そのベースプレート１１１と押し込みプレート１１３の間に介装されてその押圧部材１８を付勢するスペーサー部材１９と、が設置されている。   As shown in FIG. 4, the pressing pin member 13 is interposed between a pressing member 18 that contacts and presses the opening end side end surface We of the work W, and a base plate 111 and a pressing plate 113. A spacer member 19 that biases the pressing member 18 is installed.

詳細には、金型１１は、図５に示すように、所望の目的形状に成形したワークＷ（図２１に示す成形加工品Ｗ）を収装可能な成形空間Ｓｆを画成する収装面２１がパーティング面１１ａに形成されている一対の成形ブロック２２により構成されており、この金型１１は、図６に示すように、一方の成形ブロック２２の両側面１１ｃに雌ネジ穴２３が穿孔・刻設されてボルト２４を螺合させることにより他方の成形ブロック２２の両側面１１ｃまで延在する押さえ板２５を取り付けるように設計されている。すなわち、この金型１１は、パーティング面１１ａに沿って成形ブロック２２がずれてしまうことを押さえ板２５により防止しつつ、その成形ブロック２２のパーティング面１１ａの背面１１ｄを型押さえ装置１０２の押さえ部１０２ａにより押圧して互いに密接する方向に押し付けることにより、収装面２１（内面）により画成してワークＷを収装する成形空間Ｓｆを信頼性高く維持するように設計されている。   Specifically, as shown in FIG. 5, the mold 11 has an accommodation surface that defines a molding space Sf in which a workpiece W (molded product W shown in FIG. 21) molded into a desired target shape can be accommodated. 21 is composed of a pair of molding blocks 22 formed on the parting surface 11a. As shown in FIG. 6, the mold 11 has female screw holes 23 on both side surfaces 11c of one molding block 22. The presser plate 25 is designed to be attached to the side surfaces 11c of the other molding block 22 by being drilled and engraved and screwed into the bolts 24. That is, the mold 11 prevents the molding block 22 from being displaced along the parting surface 11 a by the pressing plate 25, and the rear surface 11 d of the parting surface 11 a of the molding block 22 is fixed to the mold pressing device 102. It is designed to maintain the molding space Sf in which the work W is accommodated by the accommodation surface 21 (inner surface) with high reliability by being pressed by the pressing portion 102a and pressed in a direction in close contact with each other.

また、この金型１１は、図２１に示すように、小径部Ｗｄと大径部ＷＤが延長方向に連続する円筒形状、言い換えると、小径部Ｗｄの間に大径部ＷＤを挟む実質同一の畝形状Ｗｒが延長方向に連続する、所謂、ベローズ管にワーク（成形加工品）Ｗを成形加工するための収装面２１がパーティング面１１ａに形成されており、この収装面２１は、上部側に形成されて成形前のワークＷを収装可能な空間を画成するように相似形状に形成されている前収装部２１ａと、この前収装部２１ａに隣接してそのワークＷに畝形状Ｗｒを成形加工し収装する空間を画成するように相似形状に形成されている成形部２１ｂと、この成形部２１ｂに隣接してワークＷに成形済みの複数の畝形状Ｗｒを収装可能な空間を画成し並列させるように相似形状に形成されている後収装部２１ｃと、を備えるように形成されている。すなわち、この金型１１の収装面２１は、前収装部２１ａの内面が成形前のワークＷの外面に対面するとともに、後収装部２１ｃの内面が成形後のワークＷの畝形状Ｗｒの外面に対面する一方、これら収装部２１ａ、２１ｃの間の成形部２１ｂ（内面）が液圧成形により塑性変形されるワークＷの外面を目的形状の畝形状Ｗｒに形成する成形面を構成しており、この成形部２１ｂと後収装部２１ｃは、その畝形状Ｗｒを収装可能に実質同一形状に形成されて連続している。   Further, as shown in FIG. 21, the mold 11 has a cylindrical shape in which the small diameter portion Wd and the large diameter portion WD are continuous in the extending direction, in other words, substantially the same with the large diameter portion WD sandwiched between the small diameter portions Wd. An accommodation surface 21 for forming a workpiece (molded product) W in a so-called bellows tube, in which the bowl shape Wr is continuous in the extending direction, is formed on the parting surface 11a. A front collecting portion 21a formed on the upper side and formed in a similar shape so as to define a space in which the workpiece W before forming can be accommodated, and the workpiece W adjacent to the front collecting portion 21a. A molding part 21b formed in a similar shape so as to define a space for forming and collecting the bowl shape Wr, and a plurality of bowl shapes Wr formed on the workpiece W adjacent to the molding part 21b. Form similar spaces to define and arrange parallel spaces It is formed to and a KoOsamuSo portion 21c being. That is, the receiving surface 21 of the mold 11 is such that the inner surface of the front receiving portion 21a faces the outer surface of the workpiece W before molding, and the inner surface of the rear receiving portion 21c is the bowl shape Wr of the workpiece W after molding. The molding part 21b (inner surface) between the receiving parts 21a and 21c constitutes a molding surface that forms the outer surface of the workpiece W, which is plastically deformed by hydraulic molding, into a target-shaped bowl shape Wr. The forming portion 21b and the rear receiving portion 21c are formed in a substantially identical shape so that the saddle shape Wr can be received and is continuous.

そして、支持部材１４は、図７に示すように、成形加工前のワークＷの外形と相似形状に形成された円柱形状に形成されており、金型１１内に画成されている収装面２１の後収装部２１ｃ内に位置させることができるように、その成形加工前のワークＷの外径Ｄｍと略同一の直径Ｄｍに設定されている。ここで、この支持部材１４は、後述するように、ワークＷをセットし直しつつ、金型１１の成形部２１ｂにおけるそのワークＷの液圧成形を繰り返すことから、異なる長さＬの複数種が準備されている。なお、この支持部材１４は、ワークＷを載置して高さ方向に位置決めするだけであるので、直径については金型１１の後収装部２１ｃ内に収装可能な寸法に作製すれば十分である。   As shown in FIG. 7, the support member 14 is formed in a cylindrical shape formed in a shape similar to the outer shape of the workpiece W before forming, and is an accommodation surface defined in the mold 11. 21 is set to a diameter Dm substantially the same as the outer diameter Dm of the workpiece W before forming so that it can be positioned in the rear receiving portion 21c. Here, as will be described later, the support member 14 repeats the hydraulic forming of the workpiece W in the molding portion 21b of the mold 11 while resetting the workpiece W. Have been prepared. In addition, since this support member 14 only mounts the workpiece | work W and positions it in a height direction, it is enough if the diameter is produced to the dimension which can be accommodated in the back collection part 21c of the metal mold | die 11. It is.

補助金型１５は、図３に示すように、未成形のワークＷの外形と相似形状で両端部の開口する収装空間Ｓｃを内部に画成してそのワークＷを貫通させた状態で収装して保持することができるように、その収装空間Ｓｃを内部に画成する円筒形状を半割り（二つ割り）にした一対の半割り部３１ａからなら収装金型３１と、この収装金型３１を内部に収装して収装空間Ｓｃを維持するように締め付ける上下２段の締付金型３３と、を備えている。収装金型３１の半割り部３１ａは、図８に示すように、未成形のワークＷの外径Ｄｍと略同一の内径Ｄｍに形成されている円筒形状を半割りにした形状に作製されている。一方、締付金型３３は、図９に示すように、収装金型３１と同様に、その収装金型３１を内部に収装可能に一対の半割り部３３ａ、３３ｂを備えており、この半割り部３３ａ、３３ｂは、収装金型３１（半割り部３１ａ）を収装可能にその外径Ｄｏと略同一の内径Ｄｏに形成されている概略円筒形状を半割りにした形状に作製されている。この締付金型３３は、内部空間Ｓｄ内に円筒形状の収装金型３１を収装したときに、半割り部３３ａ、３３ｂの割り面が離隔するように作製されており、その一方の半割り部３３ａの割り面にはボルト３５を螺合可能な雌ネジ穴３４ａが穿孔・刻設されているとともに、その他方の半割り部３３ｂにはそのボルト３５のネジ部を挿通自在に貫通するネジ穴３４ｂが形成されることにより、ボルト３５で半割り部３３ａ、３３ｂの割り面を互いに接近させるように締付けることができるように設計されている。ここで、この補助金型１５も、後述するように、ワークＷをセットし直しつつ、金型１１の成形部２１ｂにおけるそのワークＷの液圧成形を繰り返すことから、収装金型３１が異なる長さＬの複数種が準備されているのに対して、その収装金型３１を締め付ける締付金型３３はワークＷの開口端側端面Ｗｅを露出させた状態でその収装金型３１を締め付けることができるように２分割可能に設計されている。   As shown in FIG. 3, the auxiliary mold 15 is formed in a state similar to the outer shape of the unmolded workpiece W, defining an accommodation space Sc that is open at both ends and penetrating the workpiece W. If it is made up of a pair of half-divided portions 31a in which the cylindrical shape defining the housing space Sc is divided in half (divided into two), the housing mold 31 and the housing There are provided upper and lower two-stage clamping molds 33 that clamp the molds 31 so as to be accommodated therein and maintain the collection space Sc. As shown in FIG. 8, the half-divided portion 31 a of the collecting die 31 is produced in a shape that halves a cylindrical shape that is formed with an inner diameter Dm that is substantially the same as the outer diameter Dm of the unformed workpiece W. ing. On the other hand, as shown in FIG. 9, the fastening mold 33 includes a pair of halves 33 a and 33 b so that the collection mold 31 can be accommodated therein, as with the collection mold 31. The halved portions 33a and 33b are formed by halving a substantially cylindrical shape formed to have an inner diameter Do substantially the same as the outer diameter Do so that the receiving mold 31 (half portion 31a) can be accommodated. Have been made. The clamping mold 33 is formed so that the split surfaces of the half-divided portions 33a and 33b are separated from each other when the cylindrical receiving mold 31 is stored in the internal space Sd. A female screw hole 34a into which the bolt 35 can be screwed is formed in the split surface of the half-divided portion 33a, and the screw portion of the bolt 35 is inserted through the other half-divided portion 33b. By forming the screw hole 34b to be formed, the bolt 35 is designed so that the split surfaces of the half portions 33a and 33b can be tightened so as to approach each other. Here, as will be described later, the auxiliary mold 15 also repeats the hydraulic molding of the workpiece W in the molding section 21b of the mold 11 while resetting the workpiece W, so that the collection mold 31 is different. While a plurality of types of length L are prepared, the fastening mold 33 for tightening the collection mold 31 has the collection mold 31 in a state where the opening end side end surface We of the workpiece W is exposed. It is designed to be split into two so that it can be tightened.

駒部材１６は、図１０に示すように、金型１１の収装面２１における成形部２１ｂや後収装部２１ｃの一つと未成形のワークＷの外面との間に画成される空間（成形加工品Ｗの畝形状Ｗｒの一つを成形または収装するための空間）と略同一形状に形成されたリング形状を半割りにした形状に作製されており、この一対の駒部材１６を金型１１の成形ブロック２２のそれぞれの収装面２１内に嵌め込むことによりその収装面２１により画成する空間を変更することができ、未成形のワークＷの外面に接近して対面する空間を画成することができる。   As shown in FIG. 10, the piece member 16 is a space defined between one of the forming portion 21 b and the rear receiving portion 21 c on the receiving surface 21 of the mold 11 and the outer surface of the unformed workpiece W ( A ring shape formed in substantially the same shape as one of the bowl shapes Wr of the molded product W) is formed into a half-divided shape. The space defined by the receiving surface 21 can be changed by fitting into each receiving surface 21 of the forming block 22 of the mold 11, and the outer surface of the unformed workpiece W is brought close to and faced. A space can be defined.

加圧ピン部材１３は、図１１に示すように、成形加工前の円筒形状のワークＷ内に開口端側から差し込むことができるように、そのワークＷの内径Ｄｉと略同一の直径Ｄｉの円柱形状に形成されており、その一端側に形成されている雄ネジ１３ａをプレス装置１００のパンチ１１２先端に穿孔・刻設されている不図示の雌ネジに螺合させることにより、そのパンチ１１２（ベースプレート１１１）と一体に昇降する。ここで、この加圧ピン部材１３は、先端側のワークＷ内にゴムパッキン３６（図１３を参照）を位置させることにより（そのワークＷ内に注入して収容させるゼリー材料１２と先端面との間にゴムパッキン３６を介装することにより）、ゼリー材料１２を押圧（加圧）することによって高圧の液圧を発生させる場合でも、そのゼリー材料１２が吹き出てしまわないようにして使用する。ここで、この加圧ピン部材１３も、後述するように、ワークＷをセットし直しつつ、金型１１の成形部２１ｂにおけるそのワークＷの液圧成形を繰り返すことから、異なる長さＬの複数種が準備されている。   As shown in FIG. 11, the pressure pin member 13 is a cylinder having a diameter Di that is substantially the same as the inner diameter Di of the workpiece W so that the pressing pin member 13 can be inserted into the cylindrical workpiece W before forming from the opening end side. The male screw 13a formed on one end side of the punch 112 is screwed into a female screw (not shown) drilled and engraved at the tip of the punch 112 of the press device 100, thereby the punch 112 ( It moves up and down integrally with the base plate 111). Here, the pressure pin member 13 is formed by positioning a rubber packing 36 (see FIG. 13) in the workpiece W on the tip side (the jelly material 12 to be injected and accommodated in the workpiece W, the tip surface, Even when a high hydraulic pressure is generated by pressing (pressurizing) the jelly material 12, the jelly material 12 is used so that it does not blow out. . Here, the pressurizing pin member 13 also repeats the hydraulic forming of the workpiece W in the molding portion 21b of the mold 11 while resetting the workpiece W, as will be described later. Seeds are prepared.

押圧部材１８は、図１２に示すように、加圧ピン部材１３に相対移動自在に外装させることができるように、その加圧ピン部材１３の外径（成形加工前のワークＷの内径）Ｄｉと略同一の内径Ｄｉの円筒形状に形成されており、その加圧ピン部材１３がプレス装置１００のパンチ１１２と一体に降下してワークＷ内に差し込まれる際に、そのワークＷの開口端側端面Ｗｅに下端側端面が当接するとともに、押し込みプレート１１３のパンチ用挿通穴１１３ａの周縁部に上端側端面が当接することによりそのワークＷの開口端側端面Ｗｅを押圧する。ここで、この押圧部材１８も、後述するように、ワークＷをセットし直しつつ、金型１１の成形部２１ｂにおけるそのワークＷの液圧成形を繰り返すことから、異なる長さＬの複数種が準備されている。   As shown in FIG. 12, the pressing member 18 has an outer diameter (inner diameter of the workpiece W before forming) Di of the pressing pin member 13 so that the pressing pin member 13 can be externally mounted on the pressing pin member 13 so as to be relatively movable. The pressure pin member 13 is lowered integrally with the punch 112 of the press device 100 and inserted into the workpiece W when the pressure pin member 13 is inserted into the workpiece W. The lower end side end surface contacts the end surface We, and the upper end side end surface contacts the peripheral edge of the punch insertion hole 113a of the push-in plate 113, thereby pressing the open end side end surface We of the workpiece W. Here, as will be described later, the pressing member 18 repeats the hydraulic forming of the workpiece W in the molding portion 21b of the mold 11 while resetting the workpiece W. Have been prepared.

スペーサー部材１９は、例えば、本実施形態ではウレタン材料よりなる複数枚の板材を重ねることにより作製されており、降下するベースプレート１１１と押し込みプレート１１３との間に位置して、そのベースプレート１１１の押圧力を押し込みプレート１１３に伝達する程度に圧縮変形することができ、また、そのベースプレート１１１のパンチ１１２先端の加圧ピン部材１３と同時に押し込みプレート１１３が押圧部材１８を介して圧縮変形に伴う弾性力（反発力）でワークＷの開口端側端面Ｗｅを押圧することができるように厚さや弾性力が設定されている。   The spacer member 19 is produced by, for example, stacking a plurality of plates made of urethane material in the present embodiment, and is positioned between the descending base plate 111 and the pushing plate 113, and the pressing force of the base plate 111. Can be compressed and deformed to the extent that it is transmitted to the pushing plate 113, and at the same time as the pressurizing pin member 13 at the tip of the punch 112 of the base plate 111, the pushing plate 113 via the pressing member 18 is provided with an elastic force ( The thickness and the elastic force are set so that the opening end side end surface We of the workpiece W can be pressed by the repulsive force.

次に、上記の液圧成形加工装置を用いての液圧成形加工方法を簡単に説明する。
まず、プレス装置１００の設置されている作業場所で、未加工のワークＷと共に、金型１１と、ゼリー材料１２と、加圧ピン部材１３と、支持部材１４と、補助金型１５（収装金型３１および締付金型３３）と、駒部材１６と、押圧部材１８と、スペーサー部材１９と、を準備する。 Next, a hydraulic forming method using the above hydraulic forming apparatus will be briefly described.
First, in the work place where the press device 100 is installed, together with the unprocessed workpiece W, the mold 11, the jelly material 12, the pressure pin member 13, the support member 14, and the auxiliary mold 15 (accommodating). A die 31 and a fastening die 33), a piece member 16, a pressing member 18, and a spacer member 19 are prepared.

次いで、金型１１のパーティング面１１ａを離隔させて（開いて）、成形ブロック２２のそれぞれのパーティング面１１ａに形成されている収装面２１の最上位置の後収装部２１ｃに駒部材１６を嵌め込む。次いで、その一方の成形ブロック２２の駒部材１６の下側の後収装部２１ｃに支持部材１４を位置させるとともに、この支持部材１４の上にワークＷの底部を載せるようにセットする。次いで、その成形ブロック２２の互いのパーティング面１１ａを合わせるように突き合わせるとともに、一方の成形ブロック２２に押さえ板２５を取り付ける。次いで、その支持部材１４、駒部材１６およびワークＷのセットされた金型１１をプレス装置１００のダイベースプレート１０１上の型押さえ装置１０２の押さえ部１０２ａの間に位置させて、その押さえ部１０２ａを接近方向に移動させることにより金型１１の背面１１ｄを押さえる。このとき、支持部材１４としては、収装面２１における駒部材１６の下側から成形ブロック２２の底面までの長さ（高さ）に設定されているものを選択することにより、ワークＷは、その駒部材１６に対応する箇所（後収装部２１ｃ）に底部側を位置させて、その上側を成形部２１ｂに位置させるとともに、さらにその上側の外面に前収装部２１ａを略対面・圧接させる状態にして、成形空間Ｓｆ内に収装することができる。この状態で、金型１１は、押さえ板２５により横ずれすることなく、成形ブロック２２のパーティング面１１ａが互いに密接する状態を維持するように型押さえ装置１０２により型締めされる。   Next, the parting surface 11 a of the mold 11 is separated (opened), and a piece member is placed on the rear receiving portion 21 c at the uppermost position of the receiving surface 21 formed on each parting surface 11 a of the molding block 22. 16 is inserted. Next, the support member 14 is positioned on the rear receiving portion 21 c below the piece member 16 of the one molding block 22, and the bottom of the workpiece W is set on the support member 14. Next, the molding blocks 22 are abutted so that the parting surfaces 11 a of the molding blocks 22 are aligned with each other, and the pressing plate 25 is attached to one molding block 22. Next, the mold 11 on which the support member 14, the piece member 16 and the work W are set is positioned between the pressing portions 102 a of the mold pressing device 102 on the die base plate 101 of the pressing device 100, and the pressing portion 102 a is moved. The back surface 11d of the mold 11 is pressed by moving in the approaching direction. At this time, as the support member 14, by selecting a length (height) from the lower side of the piece member 16 to the bottom surface of the molding block 22 on the housing surface 21, the workpiece W is The bottom side is positioned at a position corresponding to the piece member 16 (rear housing part 21c), the upper side thereof is positioned at the molding part 21b, and the front housing part 21a is substantially opposed to and pressed against the upper outer surface. In such a state, it can be accommodated in the molding space Sf. In this state, the mold 11 is clamped by the mold pressing device 102 so that the parting surfaces 11 a of the molding blocks 22 are kept in close contact with each other without being laterally displaced by the pressing plate 25.

次いで、その金型１１の上面１１ｂから突出するワークＷを補助金型１５の収装金型３１（収装空間Ｓｃ）内に収装するとともに、同様に、この収装金型３１を補助金型１５の締付金型３３（内部空間Ｓｄ）内に収装してボルト３５を雌ネジ穴３４ａに螺合させることにより締め付ける。このとき、補助金型１５の収装金型３１と締付金型３３としては、支持部材１４に支持されて金型１１の上面１１ｂから突出するワークＷの開口端側端面Ｗｅを露出させる長さ（高さ）に設定されているものを選択することにより、金型１１にセットされているワークＷは、その金型１１の前収装部２１ａに連続して補助金型１５の収装金型３１でもその外面に略対面・圧接する状態で収装・保持することができる。ここで、締付金型３３と収装金型３１は、半割り部３１ａ間と半割り部３３ａ、３３ｂ間の割り面の延長方向が直交する位置関係になるように組み立てられており、締付金型３３の半割り部３３ａ、３３ｂが収装金型３１の半割り部３１ａ間を跨ぐように覆っているので、その収装金型３１の半割り部３１ａ間が収装するワークＷから加えられる負荷により拡開してしまうことがない。   Next, the work W protruding from the upper surface 11b of the die 11 is placed in the receiving die 31 (the receiving space Sc) of the auxiliary die 15, and the receiving die 31 is similarly attached to the auxiliary die 15. The mold 15 is fastened by being housed in the fastening mold 33 (internal space Sd) and screwing the bolt 35 into the female screw hole 34a. At this time, as the collection mold 31 and the clamping mold 33 of the auxiliary mold 15, the length that exposes the opening end side end surface We of the workpiece W supported by the support member 14 and protruding from the upper surface 11 b of the mold 11. By selecting the one set to the height (height), the workpiece W set in the mold 11 is placed in the front collecting portion 21a of the mold 11 so that the auxiliary mold 15 is placed in succession. The mold 31 can also be stored and held in a state where it substantially faces and is pressed against the outer surface. Here, the fastening mold 33 and the collecting mold 31 are assembled so that the extending directions of the split surfaces between the half-split portions 31a and the half-split portions 33a and 33b are orthogonal to each other. Since the half portions 33a and 33b of the attachment die 33 are covered so as to straddle between the half portions 31a of the collection die 31, the workpiece W to be accommodated between the half portions 31a of the collection die 31. It will not spread out due to the load applied from.

次いで、この金型１１にセットされたワークＷ内に底部から成形部２１ｂを十分に超える量のゼリー材料１２を注入した後に、そのワークＷ内にゴムパッキン３６を差し込んでゼリー材料１２の上端面側との間に空気層を挟みこまないようにセットする。   Next, after injecting an amount of the jelly material 12 sufficiently exceeding the molding portion 21b from the bottom into the workpiece W set in the mold 11, the rubber packing 36 is inserted into the workpiece W, and the upper end surface of the jelly material 12 is Set so that no air layer is caught between the sides.

一方、プレス装置１００のベースプレート１１１と押し込みプレート１１３との間にスペーサー部材１９を介装するとともに、パンチ１１２の先端に加圧ピン部材１３を固設して、この加圧ピン部材１３に押圧部材１８を外装する。このとき、加圧ピン部材１３と押圧部材１８としては、降下するベースプレート１１１が押し込みプレート１１３との間のスペーサー部材１９に当接・圧縮することにより押圧部材１８を介してワークＷの開口端側端面Ｗｅの押圧を開始する押圧開始タイミングと、ワークＷ内に注入したゼリー材料１２上面のゴムパッキン３６に加圧ピン部材１３の先端が接して加圧（押圧）する液圧発生タイミングと、が大体一致するようにそれぞれの長さ（高さ）を選択する。言い換えると、押圧開始タイミングと液圧発生タイミングは、加圧ピン部材１３の長さ、押圧部材１８の長さ、スペーサー部材１９の厚さ、ゼリー材料１２の液量、および、ゴムパッキン３６の厚さ（枚数）を適宜調整することにより、大体一致させることができる。   On the other hand, a spacer member 19 is interposed between the base plate 111 and the pushing plate 113 of the pressing device 100, and the pressing pin member 13 is fixed to the tip of the punch 112, and the pressing pin member 13 is pressed against the pressing member 13. 18 is put on the exterior. At this time, as the pressing pin member 13 and the pressing member 18, the lowering base plate 111 contacts and compresses the spacer member 19 between the pressing plate 113 and the opening W of the workpiece W through the pressing member 18. The pressing start timing for starting the pressing of the end surface We and the hydraulic pressure generation timing at which the tip of the pressing pin member 13 comes into contact with and pressurizes (presses) the rubber packing 36 on the upper surface of the jelly material 12 injected into the workpiece W. Select each length (height) so that they match. In other words, the pressing start timing and the hydraulic pressure generation timing are the length of the pressure pin member 13, the length of the pressing member 18, the thickness of the spacer member 19, the liquid amount of the jelly material 12, and the thickness of the rubber packing 36. By appropriately adjusting the thickness (number of sheets), it is possible to make them substantially coincide.

この後に、プレス装置１００のベースプレート１１１を降下させると、まずは、ワークＷ内に加圧ピン部材１３が差し込まれて押圧部材１８がそのワークＷの開口端側端面Ｗｅに当接することにより押し込みプレート１１３と共に支持された状態になった後に、そのベースプレート１１１がスペーサー部材１９に当接して圧縮するのと同時に、そのワークＷ内の加圧ピン部材１３の先端がゼリー材料１２上面のゴムパッキン３６に当接する。このため、ワークＷ内のゼリー材料１２の液圧が徐々に上昇するのと同時に、そのワークＷの開口端側端面Ｗｅが押圧部材１８により押圧されて金型１１内の成形部２１ｂ側に向って押し込まれる。このとき、押圧部材１８によるワークＷの開口端側端面Ｗｅへの押圧力と加圧ピン部材１３によるゼリー材料１２の液圧は、徐々に上昇されることからその押圧開始タイミングと液圧発生タイミングとが正確に一致するする必要はなく、ワークＷを塑性変形させる際に双方が同時に負荷されていればよい。   Thereafter, when the base plate 111 of the press apparatus 100 is lowered, first, the pressing pin member 13 is inserted into the workpiece W, and the pressing member 18 comes into contact with the opening end side end surface We of the workpiece W, thereby pushing the pressing plate 113. After the base plate 111 comes into contact with the spacer member 19 and is compressed, the tip of the pressure pin member 13 in the work W contacts the rubber packing 36 on the upper surface of the jelly material 12. Touch. Therefore, at the same time as the hydraulic pressure of the jelly material 12 in the workpiece W gradually increases, the opening end side end surface We of the workpiece W is pressed by the pressing member 18 toward the molding portion 21 b side in the mold 11. And pushed. At this time, the pressing force of the pressing member 18 on the opening end side end surface We of the workpiece W and the hydraulic pressure of the jelly material 12 by the pressing pin member 13 are gradually increased, so the pressing start timing and the hydraulic pressure generation timing Are not necessarily coincident with each other, and it is sufficient that both are simultaneously loaded when plastically deforming the workpiece W.

これにより、ワークＷは、内部に注入されたゼリー材料１２の液圧が加圧ピン部材１３の押圧により徐々に上昇することによって、そのゼリー材料１２の収容箇所がその液圧により金型１１の成形空間Ｓｆ内で広がって塑性変形しようとする。すなわち、ワークＷは、型押さえ装置１０２により締め付けられている金型１１の前収装部２１ａと後収装部２１ｃ内の駒部材１６に対面する箇所や、補助金型１５の締付金型３３により締め付けられている収装金型３１に対面する箇所では、外面がそれぞれの内面に接近して密接するだけでその塑性変形が妨げられる一方、成形部２１ｂに位置する箇所（被加工部分）では外方に張り出す方向に（液圧を逃がす方向に）延展して塑性変形することができ、その成形部２１ｂの内面を転写するように沿う形状に成形される。また、同時に、このワークＷは、金型１１の上面１１ｂから突出する箇所を補助金型１５（締付金型３３と収装金型３１）により収装されることにより押圧部材１８からの押圧力で座屈することなく、開口端側端面Ｗｅがその押圧部材１８により押圧されることによって、単に成形部２１ｂに対応する箇所が延展するだけではなく、その延展に追随するように前収装部２１ａ側から金型１１の成形部２１ｂ内に押し込まれて塑性変形することができる。このため、ワークＷは、材料が延展性に優れないために延展（塑性変形）する際に割れてしまうことなく、また、その底部側の変形し難い箇所を液圧により無理に塑性変形させてしまうことを駒部材１６により回避しつつ、その駒部材１６に隣接する箇所を金型１１の成形部２１ｂに沿う形状に精度よく液圧成形することができる。   Thereby, the workpiece | work W raises the hydraulic pressure of the jelly material 12 inject | poured inside by the press of the pressurization pin member 13, and the accommodation location of the jelly material 12 is the mold 11 by the hydraulic pressure. An attempt is made to plastically deform by expanding in the molding space Sf. In other words, the workpiece W is positioned at the front facing portion 21 a and the back receiving portion 21 c of the mold 11 that are clamped by the mold pressing device 102, or the clamping mold of the auxiliary mold 15. In the place facing the collection mold 31 clamped by 33, the outer surface only approaches and closely contacts the inner surface, and its plastic deformation is prevented. On the other hand, the place located on the molding portion 21b (worked portion) Then, it can be plastically deformed by extending in the direction of projecting outward (in the direction of releasing the hydraulic pressure), and is molded into a shape that conforms to the inner surface of the molding part 21b. At the same time, the workpiece W is pushed from the pressing member 18 by the portion protruding from the upper surface 11b of the die 11 being accommodated by the auxiliary die 15 (the fastening die 33 and the collecting die 31). By pressing the opening end side end surface We by the pressing member 18 without buckling by pressure, the pre-collecting portion not only extends the portion corresponding to the molding portion 21b but also follows the extension. It can be plastically deformed by being pushed into the molding part 21b of the mold 11 from the 21a side. For this reason, the work W does not break when the material is stretched (plastic deformation) because the material is not excellent in stretchability, and the bottom of the work W is hard to be plastically deformed by hydraulic pressure. The piece member 16 can avoid such a situation, and the portion adjacent to the piece member 16 can be accurately hydraulically formed into a shape along the forming portion 21 b of the mold 11.

そして、ワークＷの一部を金型１１の成形部２１ｂで液圧成形するのに必要なプレス圧を負荷するまでプレス装置１００のベースプレート１１１を降下させた後には、そのベースプレート１１１を上昇させてワークＷ内から加圧ピン部材１３を引き抜いて、金型１１の上面１１ｂに設置した補助金型１５の締付金型３３（半割り部３３ａ、３３ｂ）と収装金型３１（半割り部３１ａ同士）を開きワークＷを露出させるとともに、プレス装置１００の型押さえ装置１０２の押さえ部１０２ａを互いに離隔させてその金型１１の成形ブロック２２をパーティング面１１ａで開いてワークＷと支持部材１４を取り出す。   Then, after the base plate 111 of the press apparatus 100 is lowered until a press pressure necessary for hydroforming the part of the workpiece W by the molding portion 21b of the mold 11 is loaded, the base plate 111 is raised. The pressure pin member 13 is pulled out from the work W, and the clamping mold 33 (half-split part 33a, 33b) of the auxiliary mold 15 installed on the upper surface 11b of the mold 11 and the receiving mold 31 (half-split part). 31a) to expose the workpiece W, and the pressing portions 102a of the mold pressing device 102 of the pressing device 100 are separated from each other, and the molding block 22 of the mold 11 is opened at the parting surface 11a to support the workpiece W and the supporting member. 14 is taken out.

この後には、上述の工程と同様に、金型１１の後収装部２１ｃから駒部材１６を外して次段の後収装部２１ｃに嵌め込むとともに、その駒部材１６の下側の後収装部２１ｃまでの長さの支持部材１４を収装面２１内に収装して位置させることにより、成形済みの畝形状Ｗｒを駒部材１６の上側の後収装部２１ｃ内に嵌め込んで、その支持部材１４の上にワークＷの底部を載せるようにセットし、この金型１１をプレス装置１００のダイベースプレート１０１上の型押さえ装置１０２にセットする。次いで、最適な寸法の補助金型１５の収装金型３１と締付金型３３を選択・使用して、プレス装置１００にセットした金型１１の上面１１ｂから突出するワークＷを収装・締付してその開口端側端面Ｗｅを露出させる状態に保持する。ここで、この金型１１にセットされたワークＷ内のゼリー材料１２の液量が足りない場合には、ゴムパッキン３６を外して適量を注入する。   Thereafter, in the same manner as in the above-described steps, the piece member 16 is removed from the rear collecting portion 21c of the mold 11 and fitted into the rear collecting portion 21c of the next stage, and the lower collection of the lower side of the piece member 16 is performed. By placing the support member 14 having a length up to the mounting portion 21c in the receiving surface 21 and positioning it, the molded saddle shape Wr is fitted into the rear receiving portion 21c above the piece member 16. Then, the mold 11 is set on the die pressing plate 102 on the die base plate 101 of the press apparatus 100. Next, the receiving mold 31 and the clamping mold 33 of the auxiliary mold 15 having the optimum dimensions are selected and used, and the workpiece W protruding from the upper surface 11b of the mold 11 set in the press apparatus 100 is stored and placed. The opening end side end surface We is held by tightening. Here, when the amount of the jelly material 12 in the workpiece W set in the mold 11 is insufficient, the rubber packing 36 is removed and an appropriate amount is injected.

また、プレス装置１００のパンチ１１２先端に固設した加圧ピン部材１３とこの加圧ピン部材１３に外装する押圧部材１８を最適な寸法になるように適宜交換する。   Further, the pressure pin member 13 fixed to the tip of the punch 112 of the press apparatus 100 and the pressure member 18 provided on the pressure pin member 13 are appropriately exchanged so as to have an optimum dimension.

そして、プレス装置１００のベースプレート１１１を降下させることにより、ワークＷの開口端側端面Ｗｅを押圧部材１８が徐々に押圧するのと同時に、そのワークＷ内のゼリー材料１２を加圧ピン部材１３が押圧してその液圧を徐々に上昇させることによって、ワークＷの金型１１の成形部２１ｂに位置する箇所を外方に張り出す方向に延展させて塑性変形させるとともに、そのワークＷをその延展に追随するように金型１１の成形部２１ｂ内に押し込んで塑性変形させる。   Then, by lowering the base plate 111 of the press device 100, the pressing member 18 gradually presses the opening end side end surface We of the workpiece W, and at the same time, the pressing pin member 13 presses the jelly material 12 in the workpiece W. By pressing and gradually increasing the fluid pressure, the part of the workpiece W located on the molding portion 21b of the mold 11 is extended outwardly and plastically deformed, and the workpiece W is extended. And is plastically deformed by being pushed into the molding portion 21b of the mold 11 so as to follow.

この一連の液圧成形を繰り返すことにより、図２１に示すように、円筒形状の外面の延在方向に畝形状Ｗｒが連続する、所謂、ベローズ管（成形加工品）Ｗを液圧成形により作製することができる。   By repeating this series of hydraulic forming, as shown in FIG. 21, a so-called bellows tube (molded product) W in which the flange shape Wr continues in the extending direction of the cylindrical outer surface is produced by hydraulic forming. can do.

具体的には、ベローズ管Ｗにおける１段目の畝形状Ｗｒは、図１３に示す寸法の各部を組み立てて液圧成形操作を行うことにより成形加工することができる。すなわち、まずは、金型１１の成形部２１ｂの下に位置する最上の後収装部２１ｃに駒部材１６を嵌め込むとともに、その駒部材１６の下側の後収装部２１ｃまでの長さＬ１４１の支持部材１４を収装して位置させることにより、この支持部材１４の上にワークＷを載せてその底部を駒部材１６に位置させるようにセットした後に、この金型１１をプレス装置１００のダイベースプレート１０１上の型押さえ装置１０２にセットする。次いで、この金型１１の上面１１ｂから突出するワークＷを補助金型１５の長さＬ１５１の収装金型３１内に収装して締付金型３３により締め付けることによりその開口端側端面Ｗｅを露出させる状態に保持する。また、この金型１１にセットされたワークＷ内に高さＨ１程度になる液量のゼリー材料１２を注入して３枚のゴムパッキン３６をセットする。また、プレス装置１００のパンチ１１２先端に長さＬ１３１の加圧ピン部材１３を固設するとともに、この加圧ピン部材１３に長さＬ１８１の押圧部材１８を外装する。この後に、プレス装置１００のベースプレート１１１を降下させることにより、ワークＷの開口端側端面Ｗｅを押圧部材１８が徐々に押圧するのと同時に、そのワークＷ内のゼリー材料１２を加圧ピン部材１３が押圧してその液圧を徐々に上昇させることによって、ワークＷの金型１１の成形部２１ｂに対面する箇所を外方に張り出す方向に延展させるとともに、そのワークＷをその延展に追随するように金型１１の成形部２１ｂ内に押し込んで塑性変形させることができ、ベローズ管Ｗにおける１段目の畝形状Ｗｒを成形加工することができる。   Specifically, the first-stage ridge shape Wr in the bellows tube W can be formed by assembling the parts having the dimensions shown in FIG. 13 and performing a hydraulic forming operation. That is, first, the piece member 16 is fitted into the uppermost rear receiving portion 21c located under the molding portion 21b of the mold 11, and the length L141 to the lower rear receiving portion 21c on the lower side of the piece member 16 is set. The support member 14 is mounted and positioned so that the workpiece W is placed on the support member 14 and the bottom thereof is positioned on the piece member 16. It is set in the mold pressing device 102 on the die base plate 101. Next, the workpiece W protruding from the upper surface 11b of the mold 11 is accommodated in the receiving mold 31 having the length L151 of the auxiliary mold 15 and tightened by the clamping mold 33, so that the opening end side end surface We is formed. Is kept exposed. In addition, the jelly material 12 having a liquid amount of about a height H1 is injected into the workpiece W set in the mold 11, and three rubber packings 36 are set. In addition, the pressure pin member 13 having a length L131 is fixed to the tip of the punch 112 of the press apparatus 100, and the pressure member 18 having a length L181 is externally attached to the pressure pin member 13. After that, by lowering the base plate 111 of the press device 100, the pressing member 18 gradually presses the opening end side end surface We of the workpiece W, and at the same time, the jelly material 12 in the workpiece W is pressed against the pressing pin member 13. Is pressed and the fluid pressure is gradually increased, so that the portion of the workpiece W facing the molding portion 21b of the mold 11 is extended outwardly and the workpiece W follows the extension. Thus, it can be pushed into the molding part 21b of the mold 11 and plastically deformed, and the first-stage saddle shape Wr in the bellows tube W can be molded.

次に、ベローズ管Ｗにおける２段目の畝形状Ｗｒは、図１４に示す寸法の各部を組み立てて液圧成形操作を行うことにより成形加工することができる。すなわち、１段目と同様に、金型１１の後収装部２１ｃから駒部材１６を外して次段の後収装部２１ｃに嵌め込むとともに、その駒部材１６の下側の後収装部２１ｃまでの長さＬ１４２の支持部材１４を収装して位置させることにより、成形済みの１段目の畝形状Ｗｒを駒部材１６の上側の後収装部２１ｃ内に嵌め込むようにして、この支持部材１４の上にワークＷを載せてその底部が駒部材１６に位置するようにセットした後に、この金型１１をプレス装置１００のダイベースプレート１０１上の型押さえ装置１０２にセットする。以降同様に、補助金型１５の長さＬ１５２の収装金型３１を締付金型３３により締め付けて金型１１の上面１１ｂのワークＷの開口端側端面Ｗｅを露出させるとともに、このワークＷ内からゴムパッキン３６を外して高さＨ２程度の液量になるようにゼリー材料１２を注ぎ足して３枚のゴムパッキン３６を再度セットする。また、プレス装置１００のパンチ１１２先端の長さＬ１３１の加圧ピン部材１３はそのままにして、長さＬ１８２の押圧部材１８を外装した後に、プレス装置１００のベースプレート１１１を降下させることにより、ワークＷの開口端側端面Ｗｅを押圧部材１８が徐々に押圧するのと同時に、そのワークＷ内のゼリー材料１２を加圧ピン部材１３が押圧してその液圧を徐々に上昇させることによって、ワークＷを金型１１の成形部２１ｂに押し込みつつ延展させて塑性変形させることができ、ベローズ管Ｗにおける２段目の畝形状Ｗｒを成形加工することができる。   Next, the second-stage saddle shape Wr in the bellows tube W can be formed by assembling the parts having the dimensions shown in FIG. 14 and performing a hydraulic forming operation. That is, similarly to the first stage, the piece member 16 is removed from the rear collection part 21c of the mold 11 and fitted into the rear collection part 21c of the next stage, and the rear collection part below the piece member 16 is placed. By supporting and positioning the support member 14 having a length L142 up to 21c, the molded first-stage ridge shape Wr is fitted into the rear collection portion 21c on the upper side of the piece member 16, and this support is provided. After the workpiece W is placed on the member 14 and set so that the bottom thereof is positioned on the piece member 16, the die 11 is set on the die pressing device 102 on the die base plate 101 of the press device 100. Thereafter, similarly, the receiving mold 31 having the length L152 of the auxiliary mold 15 is clamped by the clamping mold 33 to expose the open end side end surface We of the workpiece W on the upper surface 11b of the mold 11, and the workpiece W The rubber packing 36 is removed from the inside, and the jelly material 12 is added so that the liquid amount is about H2. The three rubber packings 36 are set again. Further, the pressure pin member 13 having the length L131 at the tip of the punch 112 of the press apparatus 100 is left as it is, and after the press member 18 having the length L182 is externally mounted, the base plate 111 of the press apparatus 100 is lowered to lower the workpiece W. At the same time that the pressing member 18 gradually presses the opening end side end surface We, the pressure pin member 13 presses the jelly material 12 in the workpiece W to gradually increase the hydraulic pressure thereof, whereby the workpiece W is increased. Can be plastically deformed by being pushed into the molding portion 21b of the mold 11 and the second-stage saddle shape Wr in the bellows tube W can be molded.

次に、ベローズ管Ｗにおける３段目の畝形状Ｗｒは、図１５に示す寸法の各部を組み立てて液圧成形操作を行うことにより成形加工することができる。すなわち、２段目と同様に、金型１１の後収装部２１ｃから駒部材１６を外して次段の後収装部２１ｃに嵌め込むとともに、その駒部材１６の下側の後収装部２１ｃまでの長さＬ１４３の支持部材１４を収装して位置させることにより、成形済みの１、２段目の畝形状Ｗｒを駒部材１６の上側の後収装部２１ｃ内に嵌め込むようにして、この支持部材１４の上にワークＷを載せてその底部が駒部材１６に位置するようにセットした後に、この金型１１をプレス装置１００のダイベースプレート１０１上の型押さえ装置１０２にセットする。次いで、補助金型１５の長さＬ１５３の収装金型３１を締付金型３３により締め付けて金型１１の上面１１ｂのワークＷの開口端側端面Ｗｅを露出させるとともに、このワークＷ内からゴムパッキン３６を外して高さＨ３程度の液量になるようにゼリー材料１２を注ぎ足して３枚のゴムパッキン３６を再度セットする。また、プレス装置１００のパンチ１１２先端の長さＬ１３１の加圧ピン部材１３はそのままにして、長さＬ１８３の押圧部材１８を外装した後に、プレス装置１００のベースプレート１１１を降下させることにより、ワークＷの開口端側端面Ｗｅを押圧部材１８が徐々に押圧するのと同時に、そのワークＷ内のゼリー材料１２を加圧ピン部材１３が押圧してその液圧を徐々に上昇させることによって、ワークＷを金型１１の成形部２１ｂに押し込みつつ延展させて塑性変形させることができ、ベローズ管Ｗにおける３段目の畝形状Ｗｒを成形加工することができる。   Next, the third-stage saddle shape Wr in the bellows tube W can be molded by assembling each part having the dimensions shown in FIG. 15 and performing a hydraulic molding operation. That is, similarly to the second stage, the piece member 16 is removed from the rear collection part 21c of the mold 11 and fitted into the rear collection part 21c of the next stage, and the rear collection part below the piece member 16 is placed. By placing and supporting the support member 14 having a length L143 up to 21c, the molded first and second-stage ridges Wr are fitted into the rear collection portion 21c on the upper side of the piece member 16, After the workpiece W is placed on the support member 14 and set so that the bottom thereof is positioned on the piece member 16, the mold 11 is set on the die pressing device 102 on the die base plate 101 of the press device 100. Next, the receiving mold 31 having a length L153 of the auxiliary mold 15 is clamped by the clamping mold 33 to expose the opening end side end surface We of the workpiece W on the upper surface 11b of the mold 11 and from inside the workpiece W. The rubber packing 36 is removed, and the jelly material 12 is added so that the liquid amount is about H3, and the three rubber packings 36 are set again. Also, the pressure pin member 13 having the length L131 at the tip of the punch 112 of the press apparatus 100 is left as it is, and after the pressing member 18 having the length L183 is packaged, the base plate 111 of the press apparatus 100 is lowered to lower the work W At the same time that the pressing member 18 gradually presses the opening end side end surface We, the pressure pin member 13 presses the jelly material 12 in the workpiece W to gradually increase the hydraulic pressure thereof, whereby the workpiece W is increased. Can be plastically deformed by being pushed into the molding portion 21b of the mold 11 and the third-stage bowl-shaped Wr in the bellows tube W can be molded.

次に、ベローズ管Ｗにおける４段目の畝形状Ｗｒは、図１６に示す寸法の各部を組み立てて液圧成形操作を行うことにより成形加工することができる。すなわち、２、３段目と同様に、金型１１の後収装部２１ｃから駒部材１６を外して次段の後収装部２１ｃに嵌め込むとともに、その駒部材１６の下側の後収装部２１ｃまでの長さＬ１４４の支持部材１４を収装して位置させることにより、成形済みの１〜３段目の畝形状Ｗｒを駒部材１６の上側の後収装部２１ｃ内に嵌め込むようにして、この支持部材１４の上にワークＷを載せてその底部が駒部材１６に位置するようにセットした後に、この金型１１をプレス装置１００のダイベースプレート１０１上の型押さえ装置１０２にセットする。次いで、補助金型１５の長さＬ１５４の収装金型３１を締付金型３３により締め付けて金型１１の上面１１ｂのワークＷの開口端側端面Ｗｅを露出させるとともに、このワークＷ内からゴムパッキン３６を外して高さＨ４程度の液量になるようにゼリー材料１２を注ぎ足して３枚のゴムパッキン３６を再度セットする。また、プレス装置１００のパンチ１１２先端の加圧ピン部材１３を長さＬ１３２に交換するとともに、長さＬ１８４の押圧部材１８を外装した後に、プレス装置１００のベースプレート１１１を降下させることにより、ワークＷの開口端側端面Ｗｅを押圧部材１８が徐々に押圧するのと同時に、そのワークＷ内のゼリー材料１２を加圧ピン部材１３が押圧してその液圧を徐々に上昇させることによって、ワークＷを金型１１の成形部２１ｂに押し込みつつ延展させて塑性変形させることができ、ベローズ管Ｗにおける４段目の畝形状Ｗｒを成形加工することができる。   Next, the fourth-stage saddle shape Wr in the bellows tube W can be formed by assembling the parts having the dimensions shown in FIG. 16 and performing a hydraulic forming operation. That is, similarly to the second and third stages, the piece member 16 is removed from the rear collecting portion 21c of the mold 11 and fitted into the rear collecting portion 21c of the next stage, and the lower collection of the lower side of the piece member 16 is performed. By fitting and positioning the support member 14 having a length L144 up to the mounting portion 21c, the molded first to third stage hook shapes Wr are fitted into the rear receiving portion 21c on the upper side of the piece member 16. Thus, after the workpiece W is placed on the support member 14 and set so that the bottom portion is positioned on the piece member 16, the die 11 is set on the die pressing device 102 on the die base plate 101 of the press device 100. . Next, the receiving mold 31 having a length L154 of the auxiliary mold 15 is clamped by the clamping mold 33 to expose the opening end side end surface We of the workpiece W on the upper surface 11b of the mold 11 and from within the workpiece W. The rubber packing 36 is removed, and the jelly material 12 is added so that the liquid amount is about H4, and the three rubber packings 36 are set again. In addition, the pressure pin member 13 at the tip of the punch 112 of the press apparatus 100 is replaced with a length L132, and after the pressing member 18 with a length L184 is packaged, the base plate 111 of the press apparatus 100 is lowered to lower the workpiece W. At the same time that the pressing member 18 gradually presses the opening end side end surface We, the pressure pin member 13 presses the jelly material 12 in the workpiece W to gradually increase the hydraulic pressure thereof, whereby the workpiece W is increased. Can be plastically deformed by being pushed into the molding portion 21b of the mold 11 and the fourth-stage saddle shape Wr in the bellows tube W can be molded.

次に、ベローズ管Ｗにおける５段目の畝形状Ｗｒは、図１７に示す寸法の各部を組み立てて液圧成形操作を行うことにより成形加工することができる。すなわち、２〜４段目と同様に、金型１１の後収装部２１ｃから駒部材１６を外して次段の後収装部２１ｃに嵌め込むとともに、その駒部材１６の下側の後収装部２１ｃまでの長さＬ１４５の支持部材１４を収装して位置させることにより、成形済みの１〜４段目の畝形状Ｗｒを駒部材１６の上側の後収装部２１ｃ内に嵌め込むようにして、この支持部材１４の上にワークＷを載せてその底部が駒部材１６に位置するようにセットした後に、この金型１１をプレス装置１００のダイベースプレート１０１上の型押さえ装置１０２にセットする。次いで、補助金型１５の長さＬ１５４の収装金型３１をそのまま選択して締付金型３３により締め付けて金型１１の上面１１ｂのワークＷの開口端側端面Ｗｅを露出させるとともに、このワークＷ内からゴムパッキン３６を外して高さＨ５程度の液量になるようにゼリー材料１２を注ぎ足して１枚増やした４枚のゴムパッキン３６を再度セットする。また、プレス装置１００のパンチ１１２先端の長さＬ１３２の加圧ピン部材１３をそのままにして、長さＬ１８３の押圧部材１８に戻して外装した後に、プレス装置１００のベースプレート１１１を降下させることにより、ワークＷの開口端側端面Ｗｅを押圧部材１８が徐々に押圧するのと同時に、そのワークＷ内のゼリー材料１２を加圧ピン部材１３が押圧してその液圧を徐々に上昇させることによって、ワークＷを金型１１の成形部２１ｂに押し込みつつ延展させて塑性変形させることができ、ベローズ管Ｗにおける５段目の畝形状Ｗｒを成形加工することができる。   Next, the fifth-stage saddle shape Wr in the bellows tube W can be formed by assembling the parts having the dimensions shown in FIG. 17 and performing a hydraulic forming operation. That is, as in the second to fourth stages, the piece member 16 is removed from the rear collecting part 21c of the mold 11 and fitted into the rear collecting part 21c of the next stage, and the lower rear collecting of the piece member 16 is performed. By fitting and positioning the support member 14 having a length L145 up to the mounting portion 21c, the molded first to fourth-stage saddle shape Wr is fitted into the rear mounting portion 21c above the piece member 16. Thus, after the workpiece W is placed on the support member 14 and set so that the bottom portion is positioned on the piece member 16, the die 11 is set on the die pressing device 102 on the die base plate 101 of the press device 100. . Next, the storage mold 31 having the length L154 of the auxiliary mold 15 is selected as it is, and is tightened by the clamping mold 33 to expose the opening end side end surface We of the workpiece W on the upper surface 11b of the mold 11, and this The rubber packing 36 is removed from the work W, and the four rubber packings 36 are added again by adding the jelly material 12 so that the liquid amount is about H5. Further, by leaving the pressure pin member 13 having the length L132 at the tip of the punch 112 of the press device 100 as it is and returning to the pressing member 18 having the length L183 and then covering it, the base plate 111 of the press device 100 is lowered. At the same time as the pressing member 18 gradually presses the opening end side end surface We of the work W, the pressure pin member 13 presses the jelly material 12 in the work W to gradually increase the hydraulic pressure, The workpiece W can be extended while being pushed into the molding portion 21b of the mold 11 to be plastically deformed, and the fifth-stage saddle shape Wr in the bellows tube W can be molded.

次に、ベローズ管Ｗにおける６段目の畝形状Ｗｒは、図１８に示す寸法の各部を組み立てて液圧成形操作を行うことにより成形加工することができる。すなわち、２〜５段目と同様に、金型１１の後収装部２１ｃから駒部材１６を外して次段の後収装部２１ｃに嵌め込むとともに、その駒部材１６の下側の後収装部２１ｃまでの長さＬ１４６の支持部材１４を収装して位置させることにより、成形済みの１〜５段目の畝形状Ｗｒを駒部材１６の上側の後収装部２１ｃ内に嵌め込むようにして、この支持部材１４の上にワークＷを載せてその底部が駒部材１６に位置するようにセットした後に、この金型１１をプレス装置１００のダイベースプレート１０１上の型押さえ装置１０２にセットする。次いで、補助金型１５の長さＬ１５４の収装金型３１をそのまま選択して締付金型３３により締め付けて金型１１の上面１１ｂのワークＷの開口端側端面Ｗｅを露出させるとともに、このワークＷ内からゴムパッキン３６を外して高さＨ６程度の液量になるようにゼリー材料１２を注ぎ足して１枚増やした５枚のゴムパッキン３６を再度セットする。また、プレス装置１００のパンチ１１２先端の長さＬ１３２の加圧ピン部材１３をそのままにして、長さＬ１８５の押圧部材１８を外装した後に、プレス装置１００のベースプレート１１１を降下させることにより、ワークＷの開口端側端面Ｗｅを押圧部材１８が徐々に押圧するのと同時に、そのワークＷ内のゼリー材料１２を加圧ピン部材１３が押圧してその液圧を徐々に上昇させることによって、ワークＷを金型１１の成形部２１ｂに押し込みつつ延展させて塑性変形させることができ、ベローズ管Ｗにおける６段目の畝形状Ｗｒを成形加工することができる。   Next, the sixth-stage ridge shape Wr in the bellows tube W can be formed by assembling each part having the dimensions shown in FIG. 18 and performing a hydraulic forming operation. That is, similarly to the second to fifth steps, the piece member 16 is removed from the rear collecting portion 21c of the mold 11 and fitted into the rear collecting portion 21c of the next stage, and the lower rear collecting of the piece member 16 is performed. By fitting and positioning the supporting member 14 having a length L146 up to the mounting portion 21c, the molded first to fifth-stage saddle shape Wr is fitted into the rear receiving portion 21c above the piece member 16. Thus, after the workpiece W is placed on the support member 14 and set so that the bottom portion is positioned on the piece member 16, the die 11 is set on the die pressing device 102 on the die base plate 101 of the press device 100. . Next, the storage mold 31 having the length L154 of the auxiliary mold 15 is selected as it is, and is tightened by the clamping mold 33 to expose the opening end side end surface We of the workpiece W on the upper surface 11b of the mold 11, and this The rubber packing 36 is removed from the work W, and the jelly material 12 is added to the liquid amount of about the height H6, and five rubber packings 36 increased by one are set again. Further, the pressure pin member 13 having the length L132 at the tip of the punch 112 of the press apparatus 100 is left as it is, and after the pressing member 18 having the length L185 is packaged, the base plate 111 of the press apparatus 100 is lowered to lower the work W At the same time that the pressing member 18 gradually presses the opening end side end surface We, the pressure pin member 13 presses the jelly material 12 in the workpiece W to gradually increase the hydraulic pressure thereof, whereby the workpiece W is increased. Can be plastically deformed by being pushed into the molding portion 21b of the mold 11, and the sixth-stage saddle shape Wr in the bellows tube W can be molded.

次に、ベローズ管Ｗにおける７段目の畝形状Ｗｒは、図１９に示す寸法の各部を組み立てて液圧成形操作を行うことにより成形加工することができる。すなわち、２〜６段目と同様に、金型１１の後収装部２１ｃから駒部材１６を外して次段の後収装部２１ｃに嵌め込むとともに、その駒部材１６の下側の後収装部２１ｃまでの長さＬ１４７の支持部材１４を収装して位置させることにより、成形済みの１〜６段目の畝形状Ｗｒを駒部材１６の上側の後収装部２１ｃ内に嵌め込むようにして、この支持部材１４の上にワークＷを載せてその底部が駒部材１６に位置するようにセットした後に、この金型１１をプレス装置１００のダイベースプレート１０１上の型押さえ装置１０２にセットする。次いで、補助金型１５の長さＬ１５４の収装金型３１をそのまま選択して締付金型３３により締め付けて金型１１の上面１１ｂのワークＷの開口端側端面Ｗｅを露出させるとともに、このワークＷ内からゴムパッキン３６を外して高さＨ７程度の液量になるようにゼリー材料１２を注ぎ足して５枚のゴムパッキン３６を再度セットする。また、プレス装置１００のパンチ１１２先端の長さＬ１３２の加圧ピン部材１３をそのままにして、長さＬ１８６の押圧部材１８を外装した後に、プレス装置１００のベースプレート１１１を降下させることにより、ワークＷの開口端側端面Ｗｅを押圧部材１８が徐々に押圧するのと同時に、そのワークＷ内のゼリー材料１２を加圧ピン部材１３が押圧してその液圧を徐々に上昇させることによって、ワークＷを金型１１の成形部２１ｂに押し込みつつ延展させて塑性変形させることができ、ベローズ管Ｗにおける７段目の畝形状Ｗｒを成形加工することができる。   Next, the seventh-stage saddle shape Wr in the bellows tube W can be molded by assembling each part having the dimensions shown in FIG. 19 and performing a hydraulic molding operation. That is, as in the second to sixth stages, the piece member 16 is removed from the rear collecting portion 21c of the mold 11 and fitted into the rear collecting portion 21c of the next stage, and the lower rear collecting of the piece member 16 is performed. By fitting and positioning the support member 14 having a length L147 up to the mounting portion 21c, the molded first to sixth-stage saddle shape Wr is fitted into the rear receiving portion 21c above the piece member 16. Thus, after the workpiece W is placed on the support member 14 and set so that the bottom portion is positioned on the piece member 16, the die 11 is set on the die pressing device 102 on the die base plate 101 of the press device 100. . Next, the storage mold 31 having the length L154 of the auxiliary mold 15 is selected as it is, and is tightened by the clamping mold 33 to expose the opening end side end surface We of the workpiece W on the upper surface 11b of the mold 11, and this The rubber packing 36 is removed from the workpiece W, the jelly material 12 is added so that the liquid amount is about H7, and the five rubber packings 36 are set again. Further, the pressure pin member 13 having the length L132 at the tip end of the punch 112 of the press apparatus 100 is left as it is, and after the pressing member 18 having the length L186 is packaged, the base plate 111 of the press apparatus 100 is lowered to lower the workpiece W. At the same time that the pressing member 18 gradually presses the opening end side end surface We, the pressure pin member 13 presses the jelly material 12 in the workpiece W to gradually increase the hydraulic pressure thereof, whereby the workpiece W is increased. Can be plastically deformed by being pushed into the molding portion 21b of the mold 11, and the seventh-stage saddle shape Wr in the bellows tube W can be molded.

次に、ベローズ管Ｗにおける８段目の畝形状Ｗｒは、図２０に示す寸法の各部を組み立てて液圧成形操作を行うことにより成形加工することができる。すなわち、２〜７段目と同様に、金型１１の後収装部２１ｃから駒部材１６を外して次段の後収装部２１ｃに嵌め込むとともに、その駒部材１６の下側の後収装部２１ｃまでの長さＬ１４８の支持部材１４を収装して位置させることにより、成形済みの１〜７段目の畝形状Ｗｒを駒部材１６の上側の後収装部２１ｃ内に嵌め込むようにして、この支持部材１４の上にワークＷを載せてその底部が駒部材１６に位置するようにセットした後に、この金型１１をプレス装置１００のダイベースプレート１０１上の型押さえ装置１０２にセットする。この後には、補助金型１５を取り付けることなく、金型１１の上面１１ｂのワークＷの開口端側端面Ｗｅを露出させたまま、このワークＷ内からゴムパッキン３６を外して高さＨ８程度の液量になるようにゼリー材料１２を注ぎ足して１枚増やした６枚のゴムパッキン３６を再度セットする。また、プレス装置１００のパンチ１１２先端の長さＬ１３２の加圧ピン部材１３をそのままにして、長さＬ１８７の押圧部材１８を外装した後に、プレス装置１００のベースプレート１１１を降下させることにより、ワークＷの開口端側端面Ｗｅを押圧部材１８が徐々に押圧するのと同時に、そのワークＷ内のゼリー材料１２を加圧ピン部材１３が押圧してその液圧を徐々に上昇させることによって、ワークＷを金型１１の成形部２１ｂに押し込みつつ延展させて塑性変形させることができ、ベローズ管Ｗにおける８段目の畝形状Ｗｒを成形加工することができる。   Next, the eighth-stage saddle shape Wr in the bellows tube W can be molded by assembling each part having the dimensions shown in FIG. 20 and performing a hydraulic molding operation. That is, similarly to the second to seventh steps, the piece member 16 is removed from the rear collecting portion 21c of the mold 11 and fitted into the rear collecting portion 21c of the next stage, and the lower rear collecting of the piece member 16 is performed. By fitting and positioning the supporting member 14 having a length L148 up to the mounting portion 21c, the molded first to seventh-stage saddle shape Wr is fitted into the rear collecting portion 21c on the upper side of the piece member 16. Thus, after the workpiece W is placed on the support member 14 and set so that the bottom portion is positioned on the piece member 16, the die 11 is set on the die pressing device 102 on the die base plate 101 of the press device 100. . Thereafter, without attaching the auxiliary mold 15, the rubber packing 36 is removed from the inside of the work W by removing the rubber packing 36 while the opening end side surface We of the work W on the upper surface 11 b of the mold 11 is exposed. Six rubber packings 36 are added again by adding the jelly material 12 to the liquid amount and increasing it by one. Further, the pressure pin member 13 having the length L132 at the tip of the punch 112 of the press apparatus 100 is left as it is, and after the pressing member 18 having the length L187 is packaged, the base plate 111 of the press apparatus 100 is lowered to lower the work W At the same time that the pressing member 18 gradually presses the opening end side end surface We, the pressure pin member 13 presses the jelly material 12 in the workpiece W to gradually increase the hydraulic pressure thereof, whereby the workpiece W is increased. Can be plastically deformed by being pushed into the molding portion 21b of the mold 11 and the eighth-stage saddle shape Wr in the bellows tube W can be molded.

したがって、液圧成形加工装置では、汎用のプレス装置１００に設置する型押さえ装置１０２で金型１１を容易に開閉してワークＷをセットし直すとともに、そのプレス装置１００のパンチ１１２に固設する加圧ピン部材１３などを適宜交換してそのワークＷの一部を液圧成形する加工工程を繰り返すことにより、有底の円筒形状のワークＷの外周面に畝形状Ｗｒを連続形成することができ、駒部材１６により液圧成形することなく円筒形状を維持した底側の所望の位置を容易に切断して、図２１に示すベローズ管Ｗを作製することができる。   Therefore, in the hydraulic forming apparatus, the mold 11 is easily opened and closed by the mold pressing device 102 installed in the general-purpose press device 100 to reset the work W, and is fixed to the punch 112 of the press device 100. By replacing the pressurizing pin member 13 and the like as appropriate and repeating the processing step of hydroforming a part of the workpiece W, the bowl-shaped Wr can be continuously formed on the outer peripheral surface of the bottomed cylindrical workpiece W. It is possible to easily cut the desired position on the bottom side maintaining the cylindrical shape without hydraulic forming by the piece member 16, and to produce the bellows tube W shown in FIG.

このように本実施形態においては、複雑な構造の金型を準備して、複雑な液圧成形制御を行うことなく、簡易な金型１１や加圧ピン部材１３などを準備して汎用のプレス装置１００を操作するだけで、ベローズ管Ｗを液圧成形により簡易かつ容易に作製することができる。したがって、削り出しなどの機械加工によらずに、量産化前の、あるいは、少量生産のベローズ管Ｗを液圧成形により安価に作製することができ、異なる収装面を有する金型などを準備することによりベローズ管の多種の試作品を作製して適正な評価試験を行うことができる。   As described above, in the present embodiment, a mold having a complicated structure is prepared, and a simple mold 11 and a pressure pin member 13 are prepared without performing complicated hydraulic forming control, so that a general-purpose press is prepared. By simply operating the apparatus 100, the bellows tube W can be easily and easily produced by hydraulic molding. Therefore, the bellows tube W before mass production or small-scale production can be produced at low cost by hydraulic forming without using machining such as machining, and dies having different housing surfaces are prepared. By doing so, it is possible to produce various prototypes of bellows tubes and perform appropriate evaluation tests.

ここで、本実施形態では、金型１１によりベローズ管Ｗを液圧成形により作製する場合を一例に説明するが、これに限るものではなく、異なる収装面を有する金型を準備することにより、他の同一形状が長さ方向に連続する管製品を液圧成形により作製することができ、また、ワークをセットする度に異なる金型を用いて異形が長さ方向に連続する管製品を液圧成形により作製することもできる。また、円筒形状の管素材をワークとして用いる場合に限ることなく、例えば、多角形などの筒形状の管素材をワークとして用いて液圧成形を行うように設計してもよいことは言うまでもない。   Here, in this embodiment, the case where the bellows tube W is produced by hydraulic molding using the mold 11 will be described as an example. However, the present invention is not limited to this, and by preparing molds having different mounting surfaces. Pipe products in which other identical shapes continue in the length direction can be produced by hydraulic molding. Also, a tube product in which different shapes continue in the length direction using different molds each time a workpiece is set. It can also be produced by hydroforming. Needless to say, the present invention is not limited to the case where a cylindrical tube material is used as a workpiece. For example, it may be designed to perform hydraulic forming using a tubular tube material such as a polygon as a workpiece.

さらに、本実施形態では、有底の円筒形状に形成された管素材のワークＷを筒状素材の一例として説明するが、これに限るものではなく、例えば、両端側の開口する円筒形状の管素材をワークとして用いてもよいことは言うまでもない。この場合には、管素材のワーク内に注入するゼリー材料に所望の液圧を発生させることができるように、そのワークの底側を閉塞する機構を液圧成形加工装置側に設けるなどすればよい。   Furthermore, in this embodiment, the workpiece W of the tube material formed in the bottomed cylindrical shape will be described as an example of the cylindrical material. However, the present invention is not limited to this. For example, the cylindrical tube that opens at both ends is used. Needless to say, the material may be used as a workpiece. In this case, a mechanism for closing the bottom side of the workpiece may be provided on the hydraulic forming apparatus side so that a desired hydraulic pressure can be generated in the jelly material injected into the workpiece of the tube material. Good.

これまで本発明の一実施形態について説明したが、本発明は上述の実施形態に限定されず、その技術的思想の範囲内において種々異なる形態にて実施されてよいことは言うまでもない。   Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea.

本発明に係る液圧成形加工方法を実施して液圧成形加工品を作製する際に利用する液圧成形加工装置の一実施形態を示す図であり、その概略全体構成を示す正面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one Embodiment of the hydraulic forming apparatus utilized when implementing the hydraulic forming method which concerns on this invention, and producing a hydraulic forming product, It is a front view which shows the schematic whole structure. . その液圧成形加工するワークを示す図であり、（ａ）はその正面図、（ｂ）はその上面図である。It is a figure which shows the workpiece | work which carries out the hydraulic forming process, (a) is the front view, (b) is the top view. そのプレス装置のダイベースプレート側を示す一部断面正面図である。It is a partial cross section front view which shows the die base plate side of the press apparatus. そのプレス装置のベースプレート側を示す正面図である。It is a front view which shows the baseplate side of the press apparatus. その金型を示す図であり、（ａ）はその成形ブロックのパーティング面を示す正面図、（ｂ）はその成形ブロックの上面図である。It is a figure which shows the metal mold | die, (a) is a front view which shows the parting surface of the molding block, (b) is a top view of the molding block. その金型のパーティング面を突き合わせた状態を示す上面図である。It is a top view which shows the state which faced the parting surface of the metal mold | die. その支持部材を示す図であり、（ａ）はその正面図、（ｂ）はその上面図である。It is a figure which shows the supporting member, (a) is the front view, (b) is the top view. その補助金型の要部部品を示す図であり、（ａ）はその一部品の正面図、（ｂ）はその一部品の上面図である。It is a figure which shows the principal part components of the auxiliary metal mold | die, (a) is a front view of the one component, (b) is a top view of the one component. その補助金型の要部部品を示す上面図である。It is a top view which shows the principal part components of the auxiliary die. その駒部材を示す図であり、（ａ）はその正面図、（ｂ）はその上面図である。It is a figure which shows the piece member, (a) is the front view, (b) is the top view. その加圧ピン部材を示す図であり、（ａ）はその正面図、（ｂ）はその下面図である。It is a figure which shows the pressurization pin member, (a) is the front view, (b) is the bottom view. その押圧部材を示す図であり、（ａ）はその正面図、（ｂ）はその上面図である。It is a figure which shows the press member, (a) is the front view, (b) is the top view. その液圧成形加工方法の開始工程を実施する際の液圧成形加工装置の概略寸法を示す一部断面透視概念図である。It is a partial cross-sectional perspective conceptual diagram which shows the schematic dimension of the hydraulic forming apparatus at the time of implementing the start process of the hydraulic forming method. その液圧成形加工方法における図１３に続く工程を実施する際の液圧成形加工装置の概略寸法を示す一部断面透視概念図である。It is a partial cross section see-through | perspective conceptual diagram which shows the schematic dimension of the hydraulic forming apparatus at the time of implementing the process following FIG. 13 in the hydraulic forming process method. その液圧成形加工方法における図１４に続く工程を実施する際の液圧成形加工装置の概略寸法を示す一部断面透視概念図である。It is a partial cross-sectional perspective conceptual diagram which shows the schematic dimension of the hydraulic forming apparatus at the time of implementing the process following FIG. 14 in the hydraulic forming method. その液圧成形加工方法における図１５に続く工程を実施する際の液圧成形加工装置の概略寸法を示す一部断面透視概念図である。It is a partial cross-sectional perspective conceptual diagram which shows the schematic dimension of the hydraulic forming apparatus at the time of implementing the process following FIG. 15 in the hydraulic forming method. その液圧成形加工方法における図１６に続く工程を実施する際の液圧成形加工装置の概略寸法を示す一部断面透視概念図である。It is a partial cross-sectional perspective conceptual diagram which shows the schematic dimension of the hydraulic forming apparatus at the time of implementing the process following FIG. 16 in the hydraulic forming method. その液圧成形加工方法における図１７に続く工程を実施する際の液圧成形加工装置の概略寸法を示す一部断面透視概念図である。It is a partial cross-sectional perspective conceptual diagram which shows the schematic dimension of the hydraulic forming apparatus at the time of implementing the process following FIG. 17 in the hydraulic forming method. その液圧成形加工方法における図１８に続く工程を実施する際の液圧成形加工装置の概略寸法を示す一部断面透視概念図である。It is a partial cross-sectional perspective conceptual diagram which shows the schematic dimension of the hydraulic forming apparatus at the time of implementing the process following FIG. 18 in the hydraulic forming method. その液圧成形加工方法における図１９に続く工程を実施する際の液圧成形加工装置の概略寸法を示す一部断面透視概念図である。It is a partial cross-sectional perspective conceptual diagram which shows the schematic dimension of the hydraulic forming apparatus at the time of implementing the process following FIG. 19 in the hydraulic forming method. その液圧成形加工装置を利用して液圧成形加工方法を実施することにより作製した液圧成形加工品を示す一部拡大断面図である。It is a partially expanded sectional view which shows the hydraulic forming product produced by implementing the hydraulic forming method using the hydraulic forming apparatus.

符号の説明Explanation of symbols

１１……金型 １１ａ……パーティング面 １１ｂ……上面 １２……ゼリー材料 １３……加圧ピン部材 １４……支持部材 １５……補助金型 １６……駒部材 １８……押圧部材 １９……スペーサー部材 ２１……収装面 ２１ａ……前収装部 ２１ｂ……成形部 ２１ｃ……後収装部 ２２……成形ブロック ３１……収装金型 ３３……締付金型 ３６……ゴムパッキン １００……プレス装置 １０１……ダイベースプレート １０２……型押さえ装置 １０２ａ……押さえ部 １１１……ベースプレート １１２……パンチ １１３……押さえプレート １１４……スライド棒 Ｓｃ……収装空間 Ｓｆ……成形空間 Ｗ……ワーク Ｗｅ……開口端側端面 Ｗｒ……畝形状   DESCRIPTION OF SYMBOLS 11 ... Mold 11a ... Parting surface 11b ... Upper surface 12 ... Jelly material 13 ... Pressure pin member 14 ... Supporting member 15 ... Auxiliary die 16 ... Piece member 18 ... Pressing member 19 ... ... Spacer member 21 ... Containment surface 21a ... Front collection part 21b ... Molding part 21c ... Rear collection part 22 ... Molding block 31 ... Collection mold 33 ... Clamping mold 36 ... Rubber packing 100 …… Pressing device 101 …… Die base plate 102 …… Die holding device 102a …… Pressing part 111 …… Base plate 112 …… Punch 113 …… Pressing plate 114 …… Sliding rod Sc …… Sorting space Sf …… Forming space W …… Workpiece We …… Open end side end face Wr …… Shape shape

Claims (12)

筒状素材を収装して所望の形状に成形する成形面を有する金型と、該金型内に収装された筒状素材の被加工部分が成形面により画成される成形部内に位置するように該筒状素材を支持する支持部材と、金型内に収装された筒状素材内に注ぎ込む液状材料と、筒状素材内に差し込まれて液状材料を加圧することにより該筒状素材の被加工部分を塑性変形させる液圧を発生させる加圧ピン部材と、を備えており、
金型は、筒状素材の一部を収装するとともに該筒状素材の一部を塑性変形させる目的形状の成形面により画成される成形部、該成形部に連続して目的形状に形成された後の筒状素材を収装する空間を画成する後収装部、および、該後収装部の反対側で成形部に連続して目的形状に形成される前の筒状素材を収装する空間を画成する前収装部を備えることを特徴とする液圧成形加工装置。 A mold having a molding surface that accommodates a cylindrical material and molds it into a desired shape, and a portion to be processed of the cylindrical material accommodated in the mold is located in a molding part defined by the molding surface A support member for supporting the cylindrical material, a liquid material poured into the cylindrical material accommodated in the mold, and the cylindrical material by being inserted into the cylindrical material and pressurizing the liquid material A pressure pin member that generates a hydraulic pressure that plastically deforms a processed portion of the material, and
The mold is formed into a target shape continuously with the molding part defined by the molding surface of the target shape that accommodates a part of the cylindrical material and plastically deforms a part of the cylindrical material. A post-collecting portion that defines a space for accommodating the cylindrical material after being formed, and a cylindrical material before being formed into a target shape continuously to the molding portion on the opposite side of the rear-acquisition portion A hydraulic forming apparatus characterized by comprising a pre-collecting section that defines a space to be accommodated. 前記金型は、前収装部の内面が成形前の筒状素材の外面に接近して対面する形状に形成されているのに対して、成形部および後収装部の内面が目的形状の実質同一形状に形成されて連続していることを特徴とする請求項１に記載の液圧成形加工装置。   The mold is formed in such a shape that the inner surface of the pre-collection part faces the outer surface of the cylindrical material before molding, whereas the inner surface of the molding part and the rear collection part has a target shape. 2. The hydroforming apparatus according to claim 1, wherein the hydroforming apparatus is formed in a substantially identical shape and is continuous. 前記金型の後収装部内に着脱可能に設置して、成形前の筒状素材の外面に接近して対面する空間を形成する駒部材を有することを特徴とする請求項１または２に記載の液圧成形加工装置。   3. A piece member that is detachably installed in a rear housing portion of the mold and forms a space that faces and faces the outer surface of the cylindrical material before molding. Hydraulic forming machine. 前記金型内に収装された筒状素材の開口端側端面を押圧する押圧部材を備えることを特徴とする請求項１から３のいずれかに記載の液圧成形加工装置。   The hydroforming apparatus according to any one of claims 1 to 3, further comprising a pressing member that presses an opening end side end face of the cylindrical material housed in the mold. 前記金型は、前収装部に連続して当該金型本体の端部から露出する筒状素材を収装しつつ該筒状素材の開口端側端面を露出させるように長さの異なる複数種の収装空間を画成する補助金型を有しており、
前記支持部材は、筒状素材の長さ方向の所望の位置を被加工部分として金型の成形部内に位置させるように長さの異なる複数種を備えることを特徴とする請求項４に記載の液圧成形加工装置。 The mold has a plurality of different lengths so as to expose a cylindrical material exposed from an end portion of the mold main body continuously from a pre-acquisition part and to expose an end surface on the opening end side of the cylindrical material. It has an auxiliary mold that defines the seed storage space.
The said support member is equipped with multiple types from which a length differs so that the desired position of the length direction of a cylindrical raw material may be located in a shaping | molding part of a metal mold | die as a to-be-processed part. Hydroforming machine. 前記金型と支持部材がプレス装置の基台上に設置されており、
前記加圧ピン部材がプレス装置の加圧ベース部材に設置されていることを特徴とする請求項１から５のいずれかに記載の液圧成形加工装置。 The mold and the support member are installed on the base of the press device,
6. The hydroforming apparatus according to claim 1, wherein the pressure pin member is installed on a pressure base member of a press device. 前記筒状素材内に差し込まれる加圧ピン部材に外装された状態で該筒状素材の開口端側端面に当接して押圧する押圧部材がプレス装置の加圧ベース部材側に設置されているとともに、該押圧部材と加圧ベース部材との間には弾性変形する材料よりなるスペーサー部材が介装されていることを特徴とする請求項６に記載の液圧成形加工装置。   A pressing member that contacts and presses the opening end side end surface of the cylindrical material in a state of being covered with a pressure pin member inserted into the cylindrical material is installed on the pressure base member side of the press device. The hydraulic forming apparatus according to claim 6, wherein a spacer member made of an elastically deformable material is interposed between the pressing member and the pressure base member. 前記金型は、成形部、後収装部および前収装部により画成する空間内に、部材を着脱可能に開閉するパーティング面同士を互いに近接または離隔させる型押さえ装置に固定されていることを特徴とする請求項６または７に記載の液圧成形加工装置。   The mold is fixed to a mold holding device that moves parting surfaces close to or away from each other in a space defined by a molding unit, a rear housing unit, and a front housing unit. The hydroforming apparatus according to claim 6 or 7, characterized in that 筒状素材の一部を収装するとともに該筒状素材の一部を塑性変形させる目的形状の成形面により画成される成形部と、該成形部に連続して目的形状に形成された後の筒状素材を収装する空間を画成する後収装部と、該後収装部の反対側で成形部に連続して目的形状に形成される前の筒状素材を収装する空間を画成する前収装部と、を備える金型を準備して、
該金型の成形部に筒状素材の底側に位置する未加工部分が対応するように該筒状素材をセットするとともに当該筒状素材内に液状材料を収容した後に、
該筒状素材内の液状材料を加圧して当該筒状素材の被加工部分を金型の成形部の成形面に接近させる方向の液圧を発生させることにより、当該筒状素材を金型の成形部の成形面に沿うように塑性変形させる液圧成形による一部加工操作を行い、
この後に、金型の成形部を開放して筒状素材の底側に位置する未加工部分を該金型の成形部に対応するように当該筒状素材をセットし直し、以降同様に、該筒状素材内に収容する液状材料を加圧して当該筒状素材の被加工部分を塑性変形させる液圧を発生させることにより、当該筒状素材を金型の成形部の成形面に沿うように塑性変形させる液圧成形による一部加工操作を行い、
この液圧成形による一部加工操作を繰り返すことによって、筒状素材の長さ方向に金型の成形部の成形面を転写した被加工部分の連続する成形品を作製することを特徴とする液圧成形加工方法。 After forming a part of the cylindrical material and forming a molded part defined by a molding surface of a target shape that plastically deforms a part of the cylindrical material, and after being formed into a target shape continuously to the molded part A rear housing part that defines a space for housing the tubular material, and a space for housing the tubular material before being formed into a desired shape continuously to the molding part on the opposite side of the rear housing part Preparing a mold comprising a pre-collection section that defines
After setting the cylindrical material so that the unprocessed portion located on the bottom side of the cylindrical material corresponds to the molding part of the mold and accommodating the liquid material in the cylindrical material,
By pressing the liquid material in the cylindrical material and generating a hydraulic pressure in a direction in which the processed portion of the cylindrical material approaches the molding surface of the molding part of the mold, the cylindrical material is Perform some processing operations by hydraulic molding that plastically deforms along the molding surface of the molding part,
After that, the mold part of the mold is opened and the cylindrical material is set again so that the unprocessed part located on the bottom side of the cylinder material corresponds to the mold part of the mold. By pressing the liquid material contained in the cylindrical material and generating a hydraulic pressure that plastically deforms the processed portion of the cylindrical material, the cylindrical material is made to follow the molding surface of the molding part of the mold. Perform some processing operations by hydraulic forming to plastically deform,
A liquid characterized by producing a continuous molded part of a processed part in which a molding surface of a molding part of a mold is transferred in the length direction of a cylindrical material by repeating a partial processing operation by this hydraulic forming. Pressure forming processing method. 前記筒状素材内の液状材料を加圧するのと同時に、該筒状素材の開口端側端面を押圧することにより、
当該筒状素材を金型の成形部の成形面に沿うように塑性変形させる液圧成形による一部加工操作を行うことを特徴とする請求項９に記載の液圧成形加工方法。 By pressing the liquid material in the cylindrical material and simultaneously pressing the open end side end surface of the cylindrical material,
The hydraulic forming method according to claim 9, wherein a partial processing operation is performed by hydraulic forming in which the cylindrical material is plastically deformed along the forming surface of the forming part of the mold. 上記請求項１から８のいずれかに記載の液圧成形加工装置により液圧成形による一部加工操作を繰り返し行うことを特徴とする請求項９または１０に記載の液圧成形加工方法。   The hydraulic forming method according to claim 9 or 10, wherein a partial processing operation by hydraulic forming is repeatedly performed by the hydraulic forming device according to any one of claims 1 to 8. 上記請求項９から１１のいずれかに記載の液圧成形加工方法により液圧成形加工されることにより筒状素材の長さ方向に被加工部分が連続することを特徴とする液圧成形加工品。   A hydroformed product that is processed by the hydroforming method according to any one of claims 9 to 11 so that a portion to be processed is continuous in the length direction of the cylindrical material. .
JP2006311572A 2006-11-17 2006-11-17 Hydroforming apparatus, hydroforming method, and hydroformed product Expired - Fee Related JP4796942B2 (en)

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