JP3744562B2

JP3744562B2 - Press-formed parts and their processing methods

Info

Publication number: JP3744562B2
Application number: JP13470195A
Authority: JP
Inventors: 文彦池田; 秀彦早川; 秀一望月
Original assignee: Unipres Corp
Current assignee: Unipres Corp
Priority date: 1995-05-09
Filing date: 1995-05-09
Publication date: 2006-02-15
Anticipated expiration: 2021-02-15
Also published as: JPH08300084A

Description

【０００１】
【産業上の利用分野】
本発明は、自動車のオートマチックトランスミッションのキャリアプレートのような部品とその加工方法に関するものである。
【０００２】
【従来の技術】
自動車のオートマチックトランスミッションのキャリアプレート１は図８及び図９に示すように円板状のプレート本体２を有しており、プレート本体２の中心部にはボス部３が設けてあり、プレート本体２の外周部には、プレート本体２に対して直角な複数の脚部４が周方向に所定の間隔をおいて設けてあり、また、プレート本体２の外周部には、脚部４間に位置させてフランジ部５が形成してある。
【０００３】
そして、上記及びφＤA ≧φＤB となるようなキャリアプレート１をプレス加工にて成形する場合、同径エリア内に於いて、周面に連なる面、すなわちフランジ部５に相当する平面に対して、部分的に脚部４の曲げ成形を実施するには塑性加工上、欠陥となり得る局部変形又は材料の亀裂発生を防ぐ為、この脚部４とフランジ部５との継ぎ部６にφＤ1 ＞φＤ2 となるような切欠き部７が必要になっていた。
【０００４】
すなわち、図１１に示すように中心部にボス部３を設けたプレート本体２をダイ１０とパンチ１１とを用いてプレス加工し、脚部相当部４ー１を曲げ加工して、脚部４を成形していた。この場合、脚部４とフランジ部５との継ぎ部６に切欠き部７が形成されていた。
【０００５】
また、このような切欠き部７のない形状で製品を得るには、鋳物又は熱間鍛造、冷間鍛造による加工法が用いられている。
【０００６】
【発明が解決しようとする課題】
しかしながら、上記従来のプレス加工にて成形されたキャリアプレート１にあっては、この部品の機能面よりピニオンギヤ、ワッシャ等の受け面８を確保しつつ切欠き部７を付けると、脚部４の幅が狭くなってしまい、相手部品であるキャリアベースとの溶接長の減少及び溶接強度の不足につながるという問題点があった。また、鋳物又は熱間鍛造によるキャリアプレート１の製造の場合は、後工程の切削代が過多となり、コスト高になっていたし、また、冷間鍛造による場合には大きな成形力（成形荷重）を要するという問題点があった。
【０００７】
本発明は、上記の問題点に着目して成されたものであって、その第１の目的とするところは、脚部の曲げ成形で必要であった切欠き部がなく、脚部の幅が広くなり、溶接長の減少及び溶接強度不足を生じることなく、又切削代を大幅に削減することができて、コストを低減することができるし、冷間鍛造による場合に必要な大きな成形力（成形荷重）の必要ないプレス成形部品を提供することにある。
【０００８】
また、本発明は、上記の問題点に着目して成されたものであって、その第２の目的とするところは、脚部の根元部の両側に、部材本体の周面に連なる面を形成したプレス成形部品を容易に製作することが可能になるプレス成形部品の加工方法を提供することにある。
【０００９】
また、本発明は、上記の問題点に着目して成されたものであって、その第３の目的とするところは、前記脚部の根元部の両側に成形部を形成したプレス成形部品を容易に製作することが可能になるプレス成形部品の加工方法を提供することにある。
【００１０】
【課題を解決するための手段】
上記の第１の目的を達成するために、請求項１の発明に係るプレス成形部品は、部材本体の周部に互いに間隙を置いて形成した複数の脚部相当部を曲げ成形することによって、部材本体の面部に対して所定の角度を持つと共に脚部相当部の折曲部に曲げにより発生する圧縮力が脚部相当部の内部側に向かうように部材本体に連接した脚部を形成し、且つ、脚部の根元部の両側に余肉部を形成した。
【００１１】
また、上記の第１の目的を達成するために、請求項２の発明に係るプレス成形部品は、請求項１の発明に係るプレス成形部品において、脚部の幅方向全体が部材本体の周面に連設するように形成した。
【００１２】
また、上記の第２及び第３の目的を達成するために、請求項３の発明に係るプレス成形部品の加工方法は、パンチ装置とダイ装置とで部材本体の脚部相当部の位置に対応するようにして閉鎖断面の成形用空間部を形成し、パンチ装置を下降させることにより、脚部相当部を曲げ加工して成形用空間部に押し込み、この曲げによる材料の引張応力場を圧縮応力場に変換するようにして部材本体の面部に対して所定の角度を持つと共に脚部相当部の折曲部に曲げにより発生する圧縮力が脚部相当部の内部側に向かうように部材本体に連接した脚部を形成し、且つ、成形用空間部の下側の左右隅部に余肉成形部を形成し、脚部相当部の曲げ加工時に、この曲げによる材料を余肉成形部に充填することにより脚部の根元部の両側に余肉部を形成した。
【００１３】
【作用】
請求項１の発明に係るプレス成形部品にあっては、従来のプレス成形部品の脚部の曲げ成形で必要であった切欠き部が不要になり、脚部の幅が広くなり、プレス成形部品がキャリアプレートの場合には、キャリアベースとの溶接長の減少及び溶接強度の不足につながるという不具合をなくすことができる。
【００１４】
また、プレス成形により脚部の曲げ成形が可能なために、鋳物又は熱間鍛造による製造に比べ切削代を大幅に削減することができて、コストを低減することができるし、また、冷間鍛造による場合に必要な大きな成形力（成形荷重）は必要なくなる。
【００１５】
また、請求項２の発明に係るプレス成形部品にあっては、脚部の幅方向全体が部材本体の周面に連設するように形成したことにより、上記した請求項１の作用と同様な作用を奏し得る。
【００１６】
また、請求項３の発明に係るプレス成形部品の加工方法にあっては、脚部の根元部の両側に、前記部材本体の周面に連なる面を形成したプレス成形部品を容易に製作することが可能になる。
【００１７】
また、請求項３の発明に係るプレス成形部品の加工方法にあっては、脚部の根元部の両側に余肉部を形成したプレス成形部品を容易に製作することが可能になる。
【００１８】
【実施例】
以下、本発明の実施例を図面に基づいて説明する。
【００１９】
図１は本発明に関連するプレス成形部品の縦断面図、図２の（１）は同プレス成形部品の脚部部分の一部省略した斜視図、（２）は（１）のＡ方向から見た斜視図、図３は本発明に関連するプレス成形部品の加工方法におけるプレス工程の説明図、図４は図３におけるプレス成形部品の加工方法における金型構造の平面図、図５は同金型構造における成形用空間部の説明図である。
【００２０】
図面中２０はダイ装置であり、２１はパンチ装置である。ダイ装置２０は円筒形状のダイ２２と円筒形状のインサートダイ２３とから構成してあり、ダイ２２の内周部には一段低くしてインサートダイ２３が装着されている。
【００２１】
パンチ装置２１は円筒形状のパンチ２４とネスト２５とから構成してある。パンチ２４の外周部には前記キャリアプレート１の脚部４の位置に対応するようにして成形用凹部２６が形成してある。
【００２２】
そして、パンチ２４をダイ２２に挿入した状態では、ダイ２２の内周部２２ａと成形用凹部２６とで閉鎖断面の成形用空間部２７が形成されるが、この成形用空間部２７の下側の左右の隅部２７Ｌ、２７Ｒにおいては余肉逃げ用凹部２９Ｌ、２９Ｒにより余肉成形部３０が形成してある。
【００２３】
したがって、中心部にボス部３を設けた部材本体であるプレート本体２をダイ装置２０とパンチ装置２１とを用いてプレス加工する場合、先ず、プレート本体２はその脚部相当部４−１をダイ２２の上面部２２ｂ上に載せてセットされ、プレート本体２の面部にパンチ２４を当接すると共に、ネスト２５をボス部３に挿入する。この状態で、パンチ２４及びネスト２５を下降することにより、脚部相当部４ー１を曲げ加工して前記成形用空間部２７に押し込み脚部４を成形するのであるが、この場合、成形用空間部２７は閉鎖断面であるために、脚部相当部４ー１の曲げ加工部には、この曲げによる材料の引張、剪断力が働かず圧縮力が内に向かうばかりか、圧縮された材料が余肉成形部３０に充填される。また、欠陥のない切欠きなし連接形状部品の曲げ加工が実施できる。
【００２４】
この結果、脚部４の幅方向(プレート本体２の周方向)全体がプレート本体２に連接することになる。
【００２５】
そして、パンチ２４及びネスト２５を上昇してキャリアプレート１を取り出した場合、キャリアプレート１の脚部４の根元部４ａの両側４ｂ、４ｂには、図２に示すように上記した切欠き部７がなく、プレート本体２の周面２Ａに連なる面４Ａが形成され、且つ、根元部４ａの両側に余肉部２８が形成される。
【００２６】
上記した実施例によれば、従来のキャリアプレート１の脚部４の曲げ成形で必要であった切欠き部７が不要となり、脚部４の幅が広くなり、キャリアベースとの溶接長の減少及び溶接強度の不足につながるという不具合をなくすことができる。
【００２７】
また、プレス成形で脚部４を曲げ成形が可能なために、鋳物又は熱間鍛造による製造に比べ切削代を大幅に削減することができて、コストを低減することができるし、また、冷間鍛造による場合に必要な大きな成形力（成形荷重）は必要なくなる。
【００２８】
また、上記したキャリアプレート１の加工方法によれば、脚部４の根元部４ａの両側４ｂ、４ｂに、プレート本体２の周面２Ａに連なる面４Ａを形成したキャリアプレート１の成形が容易になる。
【００２９】
そして、パンチ２４及びネスト２５を上昇してキャリアプレート１を取り出した場合、このキャリアプレート１の脚部４の根元部４ａの両側４ｂ、４ｂには、図２に示すように上記した切欠き部７がなく、脚部４の根元部４ａの両側に余肉部２８が形成される。
【００３０】
上記した実施例によれば、従来のキャリアプレート１の脚部４の曲げ成形で必要であった切欠き部７が不要になり、脚部４の幅が広くなり、キャリアベースとの溶接長の減少及び溶接強度の不足につながるという不具合をなくすことができる。
【００３１】
また、プレス成形で脚部４を曲げ成形が可能なために、鋳物及び熱間鍛造による製造に比べ切削代を大幅に削減することができて、コストを低減することができるし、また、冷間鍛造による場合に必要な大きな成形力（成形荷重）は必要なくなるばかりか、高剛性品とすることができる。
【００３２】
また、上記実施例のキャリアプレート１の加工方法によれば、脚部４の根元部４ａの両側４ｂ、４ｂに余肉部２８を形成したプレス成形部品の成形が容易になる。
【００３３】
【発明の効果】
以上説明したように、本発明に係るプレス成形部品は、部材本体の周部に互いに間隙を置いて形成した複数の脚部相当部を曲げ成形することによって、部材本体の面部に対して所定の角度を持つと共に脚部相当部の折曲部に曲げにより発生する圧縮力が脚部相当部の内部側に向かうように部材本体に連接した脚部を形成し、且つ、脚部の根元部の両側に余肉部を形成したことにより、従来プレス成形部品の脚部の曲げ成形で必要であった切欠き部が不要となり、前記脚部の幅が広くなり、プレス成形部品がキャリアプレートの場合には、キャリアベースとの溶接長の減少及び溶接強度の不足につながるという不具合をなくすことができる。
【００３４】
また、プレス成形で脚部を曲げ成形が可能なために、鋳物及び熱間鍛造による製造に比べ切削代を大幅に削減することができて、コストを低減することができるし、また、冷間鍛造による場合に必要な大きな成形力（成形荷重）は必要なくなる。
【００３５】
また、脚部の根元部の両側に余肉部を形成したことにより、高剛性品とすることができる。
【００３６】
また、請求項２の本発明に係るプレス成形部品は、請求項１の発明に係るプレス成形部品において、脚部の幅方向全体が、部材本体の周面に連設するように形成したことから、上記した請求項１の効果と同様な効果が得られる。
【００３７】
また、請求項３の発明に係るプレス成形部品の加工方法は、パンチ装置とダイ装置とでワークの脚部相当部の位置に対応するようにして閉鎖断面の成形用空間部を形成し、パンチ装置を下降することにより、脚部相当部を曲げ加工して前記成形用空間部に押し込み、この曲げによる材料の引張、剪断力が働かず圧縮力を脚部相当部の内部側に向かせたことにより、脚部の根元部の両側に、部材本体の周面に連なる面を形成したプレス成形品の成形が容易になる。
【００３８】
また、請求項３の発明に係るプレス成形部品の加工方法は、成形用空間部の下側の左右の隅部に余肉成形部を形成し、脚部相当部の曲げ加工時に、この曲げによる材料を余肉成形部に充填するようにしたことにより、脚部の根元部の両側に余肉部を形成したプレス成形部品の成形が容易になる。
【図面の簡単な説明】
【図１】本発明に関連するプレス成形部品（実施例１）の縦断面図である。
【図２】（１）は同プレス成形部品の脚部部分の一部省略した斜視図である。
（２）は（１）のＡ方向から見た斜視図である。
【図３】本発明に関連するプレス成形部品の加工方法におけるプレス工程の説明図である。
【図４】図３に示すプレス成形部品の加工方法における金型構造の平面図ある。
【図５】（１）は図４と同様の金型構造におけるパンチの成形用凹部の斜視図である。（２）は同じく成形用空間部の説明図である。
【図６】従来のプレス成形部品の斜視図である。
【図７】（１）は同プレス成形部品の脚部部分の一部省略した斜視図である。
（２）は同プレス成形部品の脚部部分の一部省略した平面図である。
【図８】従来のプレス成形部品の素材の平面図である。
【図９】（１）、（２）は従来のプレス成形部品のプレス工程の説明図である。
【符号の説明】
２プレート本体（部材本体）
４脚部
４ａ根元部[0001]
[Industrial application fields]
The present invention relates to a component such as a carrier plate of an automatic transmission of an automobile and a processing method thereof.
[0002]
[Prior art]
As shown in FIGS. 8 and 9, a carrier plate 1 of an automatic transmission for an automobile has a disk-shaped plate body 2, and a boss 3 is provided at the center of the plate body 2. A plurality of legs 4 perpendicular to the plate body 2 are provided at predetermined intervals in the circumferential direction on the outer periphery of the plate body 2. Thus, the flange portion 5 is formed.
[0003]
Then, when the carrier plate 1 that satisfies the above and φDA ≧ φDB is formed by press working, a part of the same diameter area is connected to a surface continuous to the peripheral surface, that is, a plane corresponding to the flange portion 5. In order to perform bending of the leg part 4 in order to prevent local deformation or cracking of the material that may become a defect in plastic processing, φD1> φD2 at the joint part 6 between the leg part 4 and the flange part 5 Such a notch 7 was necessary.
[0004]
That is, as shown in FIG. 11, the plate body 2 provided with the boss 3 at the center is pressed using the die 10 and the punch 11, and the leg equivalent portion 4-1 is bent to form the leg 4 Was molded. In this case, a notch 7 is formed at the joint 6 between the leg 4 and the flange 5.
[0005]
Moreover, in order to obtain a product with such a shape without the notch part 7, the processing method by casting, hot forging, and cold forging is used.
[0006]
[Problems to be solved by the invention]
However, in the carrier plate 1 formed by the above conventional press working, if the notch portion 7 is attached while securing the receiving surface 8 such as a pinion gear and a washer from the functional surface of this component, There is a problem that the width becomes narrow, leading to a decrease in the welding length with the carrier base as the counterpart part and a lack of welding strength. In addition, in the case of manufacturing the carrier plate 1 by casting or hot forging, the cutting cost in the subsequent process is excessive and the cost is high, and in the case of cold forging, a large forming force (forming load) is required. There was a problem that it took.
[0007]
The present invention has been made paying attention to the above-mentioned problems. The first object of the present invention is that there is no notch portion required for bending the leg portion, and the width of the leg portion. Can be reduced, the welding length is not reduced and the welding strength is not insufficient, the cutting allowance can be greatly reduced, the cost can be reduced, and the large forming force required in the case of cold forging. The object is to provide a press-molded part which does not require (molding load).
[0008]
In addition, the present invention has been made paying attention to the above-mentioned problems, and the second object thereof is to provide a surface continuous with the peripheral surface of the member main body on both sides of the base portion of the leg portion. An object of the present invention is to provide a method for processing a press-formed part that makes it possible to easily manufacture the formed press-formed part.
[0009]
In addition, the present invention has been made paying attention to the above-mentioned problems, and the third object is to provide a press-molded part in which molded parts are formed on both sides of the base part of the leg part. An object of the present invention is to provide a method for processing a press-molded part that can be easily manufactured.
[0010]
[Means for Solving the Problems]
In order to achieve the first object, the press-molded component according to the invention of claim 1 is formed by bending a plurality of leg-corresponding portions formed at intervals around the periphery of the member body. A leg portion connected to the member main body is formed so as to have a predetermined angle with respect to the surface portion of the member main body and so that a compressive force generated by bending in the bent portion corresponding to the leg portion is directed to the inner side of the leg equivalent portion. And the surplus part was formed in the both sides of the base part of a leg part.
[0011]
In order to achieve the first object, the press-formed part according to the invention of claim 2 is the press-formed part according to the invention of claim 1, wherein the entire width direction of the leg portion is the peripheral surface of the member body. It was formed so as to be continuously provided.
[0012]
In order to achieve the second and third objects, the press-molded part processing method according to the invention of claim 3 corresponds to the position of the leg equivalent portion of the member body by the punch device and the die device. In this way, a molding space portion having a closed cross section is formed, and the punching device is lowered to bend the corresponding portion of the leg portion and push it into the molding space portion. The member main body has a predetermined angle with respect to the surface portion of the member main body so as to be converted into a field, and the compressive force generated by bending at the bent portion of the leg equivalent portion is directed toward the inner side of the leg equivalent portion. Forms connected leg parts and forms surplus molding parts at the left and right corners on the lower side of the molding space, and fills the surplus molding parts with the material from this bending when bending the leg equivalent parts. By doing so, the surplus part was formed in the both sides of the base part of a leg part.
[0013]
[Action]
In the press-molded part according to the invention of claim 1, the notch part required for bending the leg part of the conventional press-molded part becomes unnecessary, the width of the leg part becomes wide, and the press-molded part In the case of the carrier plate, it is possible to eliminate the disadvantage that the welding length with the carrier base is reduced and the welding strength is insufficient.
[0014]
In addition, since the legs can be bent by press molding, the cutting allowance can be greatly reduced compared to the production by casting or hot forging, and the cost can be reduced. A large molding force (molding load) necessary for forging is not necessary.
[0015]
Further, in the press-formed part according to the invention of claim 2, since the entire width direction of the leg portion is formed so as to be continuously provided on the peripheral surface of the member main body, the same action as that of the above-described claim 1 is achieved. Can have an effect.
[0016]
In the method for processing a press-formed part according to the invention of claim 3, it is easy to manufacture a press-formed part in which surfaces connected to the peripheral surface of the member main body are formed on both sides of the base part of the leg part. Is possible.
[0017]
In the method for processing a press-formed part according to the invention of claim 3, it becomes possible to easily manufacture a press-formed part in which surplus portions are formed on both sides of the base part of the leg part.
[0018]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0019]
FIG. 1 is a longitudinal sectional view of a press-formed part related to the present invention, FIG. 2 (1) is a perspective view in which a part of a leg portion of the press-formed part is omitted, and (2) is from the A direction of (1). FIG. 3 is an explanatory view of a pressing process in a method for processing a press-formed part related to the present invention, FIG. 4 is a plan view of a mold structure in the method for processing a press-formed part in FIG. 3, and FIG. It is explanatory drawing of the space part for shaping | molding in a metal mold | die structure.
[0020]
In the drawing, 20 is a die device, and 21 is a punch device. The die device 20 includes a cylindrical die 22 and a cylindrical insert die 23, and the insert die 23 is mounted on the inner peripheral portion of the die 22 one step lower.
[0021]
The punch device 21 includes a cylindrical punch 24 and a nest 25. A molding recess 26 is formed on the outer periphery of the punch 24 so as to correspond to the position of the leg 4 of the carrier plate 1.
[0022]
In a state where the punch 24 is inserted into the die 22, a molding space portion 27 having a closed cross section is formed by the inner peripheral portion 22 a of the die 22 and the molding recess portion 26. In the left and right corner portions 27L and 27R, the surplus shape forming portion 30 is formed by the surplus recess portions 29L and 29R.
[0023]
Therefore, when the plate main body 2 which is a member main body provided with the boss portion 3 at the center is pressed using the die device 20 and the punching device 21, the plate main body 2 first has its leg corresponding portion 4-1. The punch 22 is set on the upper surface portion 22 b of the die 22, the punch 24 is brought into contact with the surface portion of the plate body 2, and the nest 25 is inserted into the boss portion 3. In this state, by lowering the punch 24 and the nest 25, the leg equivalent portion 4-1 is bent and pushed into the molding space 27 to mold the leg portion 4. In this case, Since the space portion 27 has a closed cross section, the bending portion of the leg equivalent portion 4-1 has not been subjected to the tensile or shearing force of the material due to this bending, and the compression force is not only inward but also the compressed material. Is filled in the surplus molding part 30. In addition, it is possible to perform bending processing of an articulated part having no notch and having no defect.
[0024]
As a result, the entire width direction of the leg 4 (the circumferential direction of the plate body 2) is connected to the plate body 2.
[0025]
When the carrier plate 1 is taken out by raising the punch 24 and the nest 25, the notches 7 described above are formed on both sides 4b and 4b of the base 4a of the leg 4 of the carrier plate 1 as shown in FIG. The surface 4A connected to the peripheral surface 2A of the plate body 2 is formed, and the surplus portions 28 are formed on both sides of the root portion 4a.
[0026]
According to the above-described embodiment, the notch portion 7 which is necessary for bending the leg portion 4 of the conventional carrier plate 1 is not required, the width of the leg portion 4 is widened, and the welding length with the carrier base is reduced. In addition, it is possible to eliminate the problem that the welding strength is insufficient.
[0027]
Further, since the leg portion 4 can be bent by press molding, the cutting allowance can be greatly reduced as compared with the production by casting or hot forging, and the cost can be reduced. The large molding force (molding load) required in the case of intermediate forging is no longer necessary.
[0028]
Further, according to the processing method of the carrier plate 1 described above, it is easy to form the carrier plate 1 in which the surfaces 4A connected to the peripheral surface 2A of the plate body 2 are formed on both sides 4b and 4b of the base portion 4a of the leg portion 4. Become.
[0029]
When the carrier plate 1 is taken out by raising the punch 24 and the nest 25, the notches described above are provided on both sides 4b and 4b of the base 4a of the leg 4 of the carrier plate 1 as shown in FIG. 7 and the surplus part 28 is formed on both sides of the base part 4a of the leg part 4.
[0030]
According to the above-described embodiment, the notch portion 7 which is necessary for bending the leg portion 4 of the conventional carrier plate 1 becomes unnecessary, the width of the leg portion 4 is widened, and the welding length with the carrier base is increased. It is possible to eliminate the disadvantage that it leads to a decrease and a lack of welding strength.
[0031]
In addition, since the leg 4 can be bent by press molding, the cutting allowance can be greatly reduced compared to the production by casting and hot forging, and the cost can be reduced. A large molding force (molding load) required in the case of intermediate forging is not necessary, and a high-rigidity product can be obtained.
[0032]
Moreover, according to the processing method of the carrier plate 1 of the said Example, shaping | molding of the press molded component which formed the surplus part 28 in both sides 4b and 4b of the base part 4a of the leg part 4 becomes easy.
[0033]
【The invention's effect】
As described above, the press-molded part according to the present invention has a predetermined shape with respect to the surface portion of the member body by bending and forming a plurality of leg-corresponding portions formed at intervals around the periphery of the member body. compressive force generated by the bending angle with lifting one to bent portion of the leg portion corresponding forms legs that connected to the member body to face the inner side of the leg portion corresponding, and the root of the legs By forming the surplus portions on both sides of the plate, the notch portions that were conventionally required for the bending of the legs of the press-formed parts are no longer necessary, the width of the legs is widened, and the press-formed parts are used as carrier plates. In this case, it is possible to eliminate the disadvantage that the welding length with the carrier base is reduced and the welding strength is insufficient.
[0034]
In addition, since the legs can be bent by press molding, the cutting allowance can be greatly reduced compared to the production by casting and hot forging, and the cost can be reduced. A large molding force (molding load) necessary for forging is not necessary.
[0035]
Moreover, it can be set as a highly rigid product by forming the surplus part in the both sides of the base part of a leg part.
[0036]
Further, the press-formed part according to the present invention of claim 2 is the press-formed part according to the invention of claim 1, wherein the entire width direction of the leg portion is formed so as to be continuous with the peripheral surface of the member body. The effect similar to that of the first aspect can be obtained.
[0037]
According to a third aspect of the present invention, there is provided a method for processing a press-formed component, wherein a punching device and a die device form a molding space portion having a closed cross section so as to correspond to a position corresponding to a leg portion of a workpiece. By lowering the device, the leg equivalent part was bent and pushed into the molding space, and the tensile and shearing force of the material due to this bending did not work and the compression force was directed to the inner side of the leg equivalent part . This facilitates the molding of a press-molded product in which surfaces connected to the peripheral surface of the member main body are formed on both sides of the base portion of the leg portion.
[0038]
According to a third aspect of the present invention, there is provided a method for processing a press-molded part, wherein a surplus molding portion is formed at the left and right corners on the lower side of the molding space, and the bending is performed at the time of bending the leg equivalent portion. By filling the surplus molding part with the material, molding of the press-molded part in which the surplus part is formed on both sides of the base part of the leg part becomes easy.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a press-formed part (Example 1) related to the present invention.
FIG. 2 (1) is a perspective view in which a part of a leg portion of the press-formed part is omitted.
(2) is the perspective view seen from the A direction of (1).
FIG. 3 is an explanatory diagram of a pressing step in a method for processing a press-formed part related to the present invention.
4 is a plan view of a mold structure in the method of processing a press-formed part shown in FIG. 3. FIG.
5 (1) is a perspective view of a punch forming recess in a mold structure similar to FIG. 4. FIG. (2) is explanatory drawing of the space part for shaping | molding similarly.
FIG. 6 is a perspective view of a conventional press-formed part.
FIG. 7 is a perspective view in which a part of a leg portion of the press-molded part is omitted (1).
(2) is the top view which abbreviate | omitted a part of leg part of the press molding component.
FIG. 8 is a plan view of a material of a conventional press-formed part.
FIGS. 9A and 9B are explanatory views of a press process of a conventional press-formed part. FIGS.
[Explanation of symbols]
2 Plate body (member body)
4 Leg 4a Root

Claims

By bending a plurality of leg-corresponding portions formed at intervals around the periphery of the member main body, a predetermined angle with respect to the surface portion of the member main body and a bent portion of the leg-corresponding portion are formed. Forming leg portions connected to the member main body so that the compressive force generated by bending is directed to the inner side of the leg equivalent portion , and forming surplus portions on both sides of the base portion of the leg portion. A feature of press-formed parts.

The press-formed part according to claim 1, wherein the entire width direction of the leg portion is formed so as to be connected to the peripheral surface of the member main body.

The punching device and the die device form a closed section forming space corresponding to the position of the leg corresponding portion of the member body, and the leg corresponding portion is bent by lowering the punching device. Then, the material is pushed into the molding space, and the tensile stress field of the material caused by this bending is converted into a compressive stress field so that it has a predetermined angle with respect to the surface portion of the member body, and the leg equivalent portion is bent. Forming leg portions connected to the member main body so that the compressive force generated by bending is directed to the inner side of the corresponding portion of the leg portion, and forming extra space in the left and right corners below the molding portion space portion And forming a surplus part on both sides of the base part of the leg by filling the surplus molding part with a material obtained by this bending when bending the leg equivalent part. Processing method for press-formed parts.