JPH01133622A - Method for pressing three dimensional curved surface of extra thick plate - Google Patents
Method for pressing three dimensional curved surface of extra thick plateInfo
- Publication number
- JPH01133622A JPH01133622A JP28942287A JP28942287A JPH01133622A JP H01133622 A JPH01133622 A JP H01133622A JP 28942287 A JP28942287 A JP 28942287A JP 28942287 A JP28942287 A JP 28942287A JP H01133622 A JPH01133622 A JP H01133622A
- Authority
- JP
- Japan
- Prior art keywords
- press
- plate
- curved surface
- dimensional curved
- movable fulcrum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003825 pressing Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 23
- 239000002826 coolant Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000003507 refrigerant Substances 0.000 claims description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 description 32
- 238000010586 diagram Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えば大形水車ベーンなどの極厚板をプレス
加工する極厚板三次元曲面プレス成形方法の改良に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a method for press forming an extremely thick plate into a three-dimensional curved surface, for example, for press forming an extremely thick plate such as a large water turbine vane.
従来の三次元曲面成形方法の場合の型形状を第14図、
第15図により説明する。第14図、第15図はそれぞ
れ一体線形金型、格子構造金型の雄型、被成形品、雌型
を結合の順に配列した説明図である。図において、2G
は雄型、27は雌型、28は被成形品、29は側板、3
0.31はリブ、37はリブによる押あとである。第1
4図は雄型26、雌型27にそれぞれ必要とする三次元
曲面そのものがプレス成形面に形成された一体の線形型
を示すものであり、15図は縦の格子(リブ30.31
)を組み合せて近似三次元曲面を得る格子構造線形型で
あり、一般に用いられている6また、プレス技術に関連
するものとして、特開昭59−163033号、特開昭
60−174222号公報が提案されている。特開昭5
9−163033号公報は、構子構造の空間に一定時間
経過後に固化する充填材を充填し一体線形型を製造する
ものであり、プレスを組み合せ被加工材を三次元曲面に
形成している。Figure 14 shows the mold shape in the case of the conventional three-dimensional curved surface molding method.
This will be explained with reference to FIG. FIGS. 14 and 15 are explanatory diagrams in which a male mold, a molded product, and a female mold of an integral linear mold and a lattice structure mold are arranged in the order of joining, respectively. In the figure, 2G
2 is a male mold, 27 is a female mold, 28 is a molded product, 29 is a side plate, 3
0.31 is the rib, and 37 is the impression caused by the rib. 1st
Figure 4 shows an integrated linear mold in which the three-dimensional curved surfaces required for the male mold 26 and female mold 27 are formed on the press molding surface, and Figure 15 shows a vertical lattice (ribs 30, 31
) is a lattice structure linear type that obtains an approximate three-dimensional curved surface by combining the three-dimensional curved surface, and is generally used. Proposed. Japanese Patent Application Publication No. 5
According to Japanese Patent No. 9-163033, an integral linear mold is manufactured by filling the space of a structural structure with a filler that solidifies after a certain period of time, and a press is combined to form a workpiece into a three-dimensional curved surface.
また、特開昭60−174222号公報によるものは、
多点支持による曲げ加工を行なうもので、プレス機械の
一部として上下の加圧テーブルの一部に多数の昇降機能
を有する支持ロッドを設け、該支持ロッド先端に取り付
けた球面軸受式支持ヘッドにより被加工材を加圧し、最
小3点以上の曲げ支点を構成し曲げ形成を行なうもので
ある。In addition, the one according to Japanese Patent Application Laid-Open No. 60-174222,
This machine performs bending using multi-point support, and a support rod with multiple lifting and lowering functions is installed as part of the upper and lower pressure tables as part of the press machine, and a spherical bearing type support head attached to the tip of the support rod The workpiece is pressurized and bending is performed by configuring a minimum of three or more bending fulcrum points.
上記の一体總型、または格子構造線型の場合においては
、(イ)複雑な三次元曲面を形成するためにはNC加工
またはゲージ合せによる手仕上げ加工を必要とするため
、厚板熱間加工用の大形加工品の場合は、作業工数を多
く必要とし経済性に問題があった。(ロ)そして、成形
曲面の修正、または変形等による精度低下に伴う再加工
を必要とする場合は(イ)と同様な多くの加工工数が必
要であり保守面の経済性に問題があった。(ハ)また、
成形曲面毎に一対の金型が必要であり、それぞれ異なっ
ている三次元曲面を有する複数のプレス成形構造品を製
作する場合、それぞれの曲面に応じた線形金型の製作を
必要とすると云う問題点があった。In the case of the above-mentioned integral type or lattice structure linear type, (a) manual finishing by NC processing or gauge matching is required to form a complex three-dimensional curved surface, so it is suitable for hot processing of thick plates. In the case of large-sized processed products, many man-hours are required, which poses an economical problem. (b) If the molded curved surface needs to be corrected or reprocessing is required due to deterioration of accuracy due to deformation, etc., a large number of processing steps are required as in (b), which poses a problem in terms of economic efficiency in terms of maintenance. . (c) Also,
A pair of molds is required for each molded curved surface, and when manufacturing multiple press-molded structures each having a different three-dimensional curved surface, it is necessary to manufacture a linear mold according to each curved surface. There was a point.
(ニ)一方、厚鋼板の熱間加工を連続して行なう場合に
は、一般的に、金型が高温となり熱変形を生じ精度低下
を生じる問題がある。(ホ)そして、連続熱間加工によ
り金型が高温化した場合、熱間加工材の成形後の冷却速
度が低下し、加圧解放までの時間が長大化すると共に、
合金鋼など材種によってはオーステナイト域の冷却速度
が遅くなりその結果、結晶粒の粗大化が生じ成形完了後
再熱処理が必要となる問題がある。(d) On the other hand, when a thick steel plate is hot-worked continuously, there is generally a problem that the mold becomes high in temperature, causing thermal deformation and deterioration of accuracy. (e) When the temperature of the mold becomes high due to continuous hot working, the cooling rate of the hot worked material after forming decreases, and the time until pressure is released becomes longer.
Depending on the grade, such as alloy steel, the cooling rate in the austenite region is slow, resulting in coarsening of crystal grains and the need for reheat treatment after completion of forming.
また、特開昭60−174222号「ユニバーサル金型
付プレス」の場合、(へ)支持ロッドが直接曲げ加工圧
力を受けるため、ロッドの固定及び耐圧力によって加圧
力が制限される問題がある。このため、大きな加圧力が
必要とされる厚鋼板の熱間成形に適用可能な装置を製造
することは困戴である。Furthermore, in the case of JP-A-60-174222 "Press with universal mold", (f) the support rod is directly subjected to bending pressure, so there is a problem that the pressing force is limited by the fixation of the rod and the withstand pressure. For this reason, it is difficult to manufacture an apparatus applicable to hot forming of thick steel plates, which requires a large pressing force.
(ト)また、支持ロッド先端のヘッドが被加工材の部分
接触し加圧する機構であり厚板熱間加工では支持ロッド
の配置2寸法によっては圧痕を生じる間層がある。(チ
)さらに、専用プレスが必要であり経済性に問題がある
。(G) Furthermore, the head at the tip of the support rod partially contacts and pressurizes the workpiece, and in hot working of a thick plate, depending on the arrangement and dimensions of the support rod, there may be an indentation. (H) Furthermore, a dedicated press is required, which poses an economical problem.
上記従来技術においては、汎用のプレス装置の加圧装置
を利用できぬものであったり、それぞれ異なる三次元曲
面を有する個々の成形品をプレス成形する場合にそれぞ
れの曲面に応じた金型を製作しており製作、保守に多数
の工数を要したり、プレス成形品支持ロッドによる圧痕
を生じたり。In the above conventional technology, when the pressurizing device of a general-purpose press machine cannot be used, or when press-molding individual molded products with different three-dimensional curved surfaces, molds are manufactured according to each curved surface. This requires a large number of man-hours to manufacture and maintain, and the press-formed product support rods may cause indentations.
もしくは三次元曲面を支持ロッドで支持加圧の場合に加
圧力が構造的に制限され、汎用プレスの加圧装置に取付
けができると共に、多種類の三次元曲面に対応しプレス
型面となるそれぞれの押板がきわめて容易に形成でき、
低温状態に保持されるこの押収のプレス型面により加熱
された被加工材をプレス成形するようにし、高精度、高
耐久性を有し、経済的に厚板を三次元曲面にプレス成形
することについて配慮がなされず、専用のプレス装置、
を必要としたり、金型の製作、保守点検に多くの作業工
数を多く要し経済性に乏しいなどの問題点を有していた
。Alternatively, when a three-dimensional curved surface is supported and pressurized using a support rod, the pressure force is structurally limited, and it can be installed on a general-purpose press pressurizing device. It is very easy to form a press plate of
The heated workpiece material is press-formed by the surface of the seized press die, which is kept at a low temperature, and thick plates can be economically press-formed into three-dimensional curved surfaces with high precision and high durability. No consideration was given to the special press equipment,
This method requires a large number of man-hours for mold production, maintenance and inspection, and is not economically viable.
本発明は上記の状況に鑑みなされたものであり、汎用プ
レスの加圧装置に取付けができると共に多種類のそれぞ
れの三次元曲面に対応し成形ができるプレス型の金型を
その都度形成することがきわめて簡単、容易で、しかも
、該金型が高精度、高耐久性を有し経済的に三次元曲面
に熱間加工で可動支点ロッドの加圧力を低減し成形でき
る厚板三次元曲面プレス成形方法を提供することを目的
としたものである。The present invention was made in view of the above situation, and it is an object of the present invention to form a press mold that can be attached to a pressurizing device of a general-purpose press and that can mold various types of three-dimensional curved surfaces on a case-by-case basis. This is a thick three-dimensional curved surface press that is extremely simple and easy, and the mold has high precision and high durability, and can be economically formed into a three-dimensional curved surface by reducing the pressing force of the movable fulcrum rod by hot working. The purpose is to provide a molding method.
上記目的は、加熱された状態の被加工材の厚板を上下部
プレス間に挟み三次元曲面にプレス成形する方法におい
て、上記上下部プレスが、内部に冷媒が流通し冷却され
ると共に上記曲面のプレス加圧面を形成する押板と、該
押板面に受圧ヘッドを介し上記曲面を抑圧成形可能に接
し該曲面形状のそれぞれの位置に対応し突出する高さ寸
法が調整制御可能に形成され、かつ、取付位置において
流動する冷媒を介して冷却されるように形成されている
複数の可動支点ロッドと、該可動支持ロッド全体の周囲
を囲む位置もしくは該可動支点ロッドを複数個に分割す
る位置に配設され上記可動支点ロッドと共に冷却されプ
レス時に上記被加工材の被抑圧変形部の形状に対応し該
被加工材を主体となって加圧変形させる最大突起部を備
えた支持側板とを有して形成され、上記上下部プレスに
取り付けられている上記可動支点ロッド及び上記支持側
板がプレス成形される上記被加工材の所望の上記三次元
曲面形状に応じそれぞれの突出高さが調整制御され、対
向配設される該可動支点ロッドの上記受圧ヘッド及び該
支持側板のそれぞれの相互間に、上下面のそれぞれに上
記押板が固着されていると共に加熱されたダミープレー
トを挟持しプレス加工し該押板の該ダミープレート接合
面に上記三次元曲面を形成した後、該ダミープレートプ
レス状態のそれぞれ突出高さが調整されたままの上記支
持側板に上記押板を固着すると共に上記受圧ヘッドを該
押板に接触させ該ダミープレートを分離除去し、該押板
、上記可動支点ロッド及び上記支持側板を低温状態に保
持しつつ該押板相互間に加熱された上記被加工材を挟み
プレス加工する厚板三次元曲面プレス成形方法によって
達成される。The above purpose is to provide a method in which a thick plate of a heated workpiece material is sandwiched between upper and lower presses and press-formed into a three-dimensional curved surface. a press plate forming a pressing surface of the press, and a press plate contacting the press plate surface via a pressure receiving head so as to be able to suppress the curved surface, and protruding height dimensions corresponding to respective positions of the curved surface shape are formed so as to be adjustable and controllable. , and a plurality of movable support rods formed to be cooled via a flowing refrigerant at the mounting position, and a position surrounding the entire movable support rod or a position where the movable support rod is divided into a plurality of pieces. a support side plate provided with a maximum protrusion that is disposed on the movable fulcrum rod and is cooled together with the movable fulcrum rod, and that corresponds to the shape of the suppressed deformation portion of the workpiece during pressing and mainly pressurizes and deforms the workpiece. The protruding height of each of the movable fulcrum rod and the supporting side plate, which are formed with a press molding and which are attached to the upper and lower presses, is adjusted and controlled according to the desired three-dimensional curved shape of the workpiece to be press-formed. The pressure receiving head and the support side plate of the movable fulcrum rod, which are arranged facing each other, are sandwiched and pressed with the press plate fixed to each of the upper and lower surfaces and a heated dummy plate. After forming the three-dimensional curved surface on the dummy plate joining surface of the pressing plate, the pressing plate is fixed to the supporting side plate whose protrusion height is adjusted while the dummy plate is pressed, and the pressure receiving head is is brought into contact with the press plate, the dummy plate is separated and removed, and the heated workpiece is sandwiched between the press plates while maintaining the press plate, the movable fulcrum rod, and the supporting side plate at a low temperature, and then pressed. This is achieved by processing thick plate three-dimensional curved surface press forming method.
後述の実施例の説明中にも記載されているように、第7
図に示す上下部プレス32.33のそれぞれには、被加
工材20に形成される三次元曲面に応じ、それぞれ高さ
寸法りが調整し突設された複数の可動支点ロッド1が配
設され、この可動支点ロッド1を囲み所定の突出高さに
形成し取り付けられた支持側板12がセットされている
。そして、第6図に示すように、上下両面に押板16゜
16が溶接部22により複数個所で固定された軟鋼層の
ダミープレート21が加熱された状態で上下型プレス3
2.33間に挟まれる位置に第7図のように取り付けら
れ第8図のようにプレス加工される。尚、この場合に、
押板16.可動支点ロッド1のそれぞれは冷却可能に形
成されているが、このダミープレート21.押板16の
プレス加工時には冷却されることはない。そして、この
プレス加工により、必要とする三次元曲面を形成するよ
うに、支持側板12によって被加工材20の周辺部を形
成する押板16の面が形成されると共に、それぞれ突出
量が計算寸法りに調整された可動支点ロッド1により第
8図のようにダミープレート21を介在し押板16,1
6が所望の三次元曲面に形成される。この押板16.1
6が三次元曲面に形成された直後の状態で溶接部19を
介し押板16を支持側板12に溶接固定した後、ダミー
プ。As described in the description of the embodiment below, the seventh
Each of the upper and lower presses 32 and 33 shown in the figure is provided with a plurality of protruding movable fulcrum rods 1 whose heights are adjusted according to the three-dimensional curved surface formed on the workpiece 20. A support side plate 12 is set surrounding the movable fulcrum rod 1 and formed to have a predetermined protruding height. Then, as shown in FIG. 6, a dummy plate 21 made of a mild steel layer having push plates 16° 16 fixed at a plurality of locations on both upper and lower surfaces by welding parts 22 is placed in the upper and lower press 3 in a heated state.
It is attached at a position sandwiched between 2 and 33 as shown in FIG. 7, and is pressed as shown in FIG. In this case,
Push plate 16. Each of the movable fulcrum rods 1 is formed to be coolable, and this dummy plate 21. The press plate 16 is not cooled during press working. Through this press working, the surface of the press plate 16 that forms the peripheral part of the workpiece 20 is formed by the support side plate 12 so as to form the required three-dimensional curved surface, and the protrusion amount of each is adjusted to the calculated size. With the movable fulcrum rod 1 adjusted as shown in FIG.
6 is formed into a desired three-dimensional curved surface. This push plate 16.1
Immediately after 6 is formed into a three-dimensional curved surface, the push plate 16 is welded and fixed to the support side plate 12 via the welded portion 19, and then the dummy pump is assembled.
レート21は溶接部22を溶断し押板16から切り離し
除去する。The plate 21 fuses the welded portion 22 to separate it from the push plate 16 and remove it.
このため、押板16の支持側板12に対する取付位置は
、押板16がダミープレート21と共にプレス加工され
る状態の位置であり、それぞれの可動支点ロッド1に固
定された受圧ヘッド2の押板16に対する接触位置も同
様にダミープレート2′1、押板16をプレス加工した
時と同位置となる。そして、第11図のように、上下の
押板16゜16間に加熱された被加工材2oを位置させ
、第1図、第2図のようにプレス成形加工する。この場
合、押板16.可動支点ロッド1.支持側板12は冷却
状態に保持されており、被加工材20を円滑で寸法正確
に加工成形出来る。そして、三次元曲面が変る個々の被
加工材20のプレス成形毎に、支持側板12の突出高さ
、並びに各可動支持ロッド1の計算寸法りの突出高さを
調整しダミープレート21を用いて押板16を所望の三
次元曲面のプレス成形面に成形した後上記した方法で被
加工材20をプレス成形する。Therefore, the attachment position of the press plate 16 to the supporting side plate 12 is the position where the press plate 16 is pressed together with the dummy plate 21, and the press plate 16 of the pressure receiving head 2 fixed to each movable fulcrum rod 1 Similarly, the contact position is the same as when the dummy plate 2'1 and the press plate 16 are pressed. Then, as shown in FIG. 11, the heated workpiece 2o is positioned between the upper and lower press plates 16 and 16, and press-formed as shown in FIGS. 1 and 2. In this case, the push plate 16. Movable fulcrum rod 1. The support side plate 12 is maintained in a cooled state, and the workpiece 20 can be processed and formed smoothly and with accurate dimensions. Then, for each press forming of each workpiece 20 whose three-dimensional curved surface changes, the protrusion height of the support side plate 12 and the protrusion height of each movable support rod 1 according to the calculated dimensions are adjusted using the dummy plate 21. After the press plate 16 is formed into a desired three-dimensionally curved press-formed surface, the workpiece 20 is press-formed by the method described above.
以下本発明の厚板三次元曲面プレス成形方法を実施例を
用い第1図ないし第8図により説明する。EMBODIMENT OF THE INVENTION Hereinafter, the thick plate three-dimensional curved surface press-forming method of the present invention will be explained using an example with reference to FIGS. 1 to 8.
第1図は方法を実施する成形装置の説明図、第2図は第
1図の上部プレスを除く漏断面図、第3図は第1図の金
型概念部の結合関係を示す斜視図、第4図は第1図のプ
レス下部の斜視図、第5図は第4図のジヤツキフレーム
部に対する支持側板組立説明図、第6図はダミープレー
トと第1図の押板との素材組立状態を示す斜視図、第7
図、第8図はそれぞれ第6図のダミープレートを第1図
の成形装置を用い加圧成形前及び成形後の縦断面図であ
る。図において、1は可動支点ロッド、2は可動支点ロ
ッド1の受圧ヘッド、3は支点ロッド雄ねじ、4はロッ
クリング、5はジヤツキ外筒、6は可動支点部である。FIG. 1 is an explanatory diagram of a molding apparatus for carrying out the method, FIG. 2 is a leakage cross-sectional view of FIG. 1 excluding the upper press, and FIG. 3 is a perspective view showing the connection relationship of the mold conceptual parts of FIG. 1. Figure 4 is a perspective view of the lower part of the press in Figure 1, Figure 5 is an explanatory diagram of the assembly of the support side plate for the jack frame part in Figure 4, and Figure 6 is the material assembly of the dummy plate and the push plate in Figure 1. Perspective view showing the state, No. 7
8 are longitudinal cross-sectional views of the dummy plate shown in FIG. 6 before and after pressure molding using the molding apparatus shown in FIG. 1, respectively. In the figure, 1 is a movable fulcrum rod, 2 is a pressure receiving head of the movable fulcrum rod 1, 3 is a male thread of the fulcrum rod, 4 is a lock ring, 5 is a jack outer cylinder, and 6 is a movable fulcrum part.
7は上皮板、8は下皮板。7 is the epithelial plate, 8 is the hypodermal plate.
9は外枠、10は側板受板、11はジヤツキフレーム部
、12は支持側板で被加工材20をプレス成形時に被加
工材2oを変形させる加圧力の大部分を負担するように
なっている。13はボルト、14は冷却媒体給排管、1
5は支持側板部、16は押板、17は導水管、18は通
水孔、19は溶接部、また、21はダミープレート、2
2は溶接部、23は下部プレステーブル、24は上部プ
レステーブル、32は上部プレス、33は下部プレスで
ある。9 is an outer frame, 10 is a side plate receiving plate, 11 is a jack frame portion, and 12 is a support side plate that bears most of the pressure that deforms the workpiece 2o when press-forming the workpiece 20. There is. 13 is a bolt, 14 is a cooling medium supply/discharge pipe, 1
5 is a supporting side plate part, 16 is a push plate, 17 is a water pipe, 18 is a water passage hole, 19 is a welding part, and 21 is a dummy plate;
2 is a welding part, 23 is a lower press table, 24 is an upper press table, 32 is an upper press, and 33 is a lower press.
そして、成形装置は、大別して可動支点部6、ジヤツキ
フレーム部11、支持側板部15、押板16によって構
成されている。可動支点部6は、可動支点ロッド1及び
受圧ヘッド2により押板16に接する荷重を受けるもの
であり、可動支点ロッド1の外周には十分な耐荷重容量
の支点ロッド雄ねじ3が設けられている。そして、ジヤ
ツキ外筒5との螺合結合によって可動支点ロッド1を回
動駆動することにより受圧ヘッド2の高さ寸法りの調整
を自由に行なうことができ、各支点毎の受圧ヘッド2の
球心高さ寸法りが計算調整しセットされた後はロックリ
ング4により固定するようになっている。可動及び耐荷
重の機構は、上記のスクリュージヤツキ方式の他に油圧
シリンダを用いて行なうこともできる。The molding device is roughly composed of a movable fulcrum section 6, a jack frame section 11, a support side plate section 15, and a push plate 16. The movable fulcrum part 6 receives the load of the movable fulcrum rod 1 and the pressure-receiving head 2 in contact with the push plate 16, and a fulcrum rod male thread 3 with sufficient load-bearing capacity is provided on the outer periphery of the movable fulcrum rod 1. . The height of the pressure receiving head 2 can be freely adjusted by rotating the movable fulcrum rod 1 through screw connection with the jack outer cylinder 5. After the center height has been calculated and set, it is fixed with a lock ring 4. The movable and load-bearing mechanism can also be implemented using a hydraulic cylinder in addition to the above-mentioned screw jack system.
ジヤツキフレーム部11は、外枠9.側板受板10、上
皮板7.下支板8により構成され、ジヤツキ外筒5に作
用する垂直圧力P′及び斜面支持により生じる側圧力P
′及び該側圧力P#により生じるジヤツキ外筒5に作用
する回転モーメントに耐える強度構造を有しそれぞれの
可動支点を支持するようになっている。支持側板部15
は、型曲面の最大突起部分を含む断面形状部及び被加工
材20の周辺部分を成形する支持側板12.締付ボルト
13.冷却媒体送給、排出用接続管の冷却媒体給排管1
4とからなっている。複数の支持側板12は相互に隣接
部を溶接によって接合され、さらに、締付ボルト13に
よりジヤツキフレーム部11の外枠9に位置決め固定さ
れるようになっている。可動支点部6は、押板16.支
持側板部15、ジヤツキフレーム部11に囲まれた空間
に冷却媒体Aが冷却媒体給排管14により給排し冷却さ
れ熱間加工中の熱影響を防止するようになっている。The jacking frame portion 11 has an outer frame 9. Side plate receiving plate 10, epithelial plate 7. The vertical pressure P' that is composed of the lower support plate 8 and acts on the jack outer cylinder 5, and the side pressure P that is generated due to the slope support.
It has a strong structure capable of withstanding the rotational moment acting on the jack outer cylinder 5 caused by the side pressure P# and the side pressure P#, and supports each movable fulcrum. Support side plate part 15
12. is a support side plate 12. which forms a cross-sectional portion including the maximum protrusion portion of the mold curved surface and a peripheral portion of the workpiece 20. Tightening bolt 13. Coolant supply and discharge pipe 1 for cooling medium supply and discharge connection pipe
It consists of 4. Adjacent portions of the plurality of support side plates 12 are joined by welding, and are further positioned and fixed to the outer frame 9 of the jack frame portion 11 by tightening bolts 13. The movable fulcrum portion 6 includes a push plate 16. A cooling medium A is supplied and discharged from a space surrounded by the support side plate part 15 and the jack frame part 11 through a cooling medium supply/discharge pipe 14 to cool the space and prevent the influence of heat during hot working.
押板16は、後述する方法により必要とする三次元曲面
に成形された後、支持側板12に溶接部19によって固
定結合されて、二次元曲面成形用金型が形成される。押
板16には通水孔18が必要散設けられ、水冷却により
熱間加工中の押板16面の熱変形防止及び被加工材20
の冷却速度を制御するようになっている。第3図ないし
第5図は成形装置の主要構成部を示し、第3図に支持側
板12と予め必要とする三次元曲面に成形された押板1
6とが、溶接等により組み合せ接続された中空のいわゆ
る最中の殻の如き金型成形部が示されている。第4図は
押板16が可動支点ロッド1によって保持されるジヤツ
キフレーム部11を示し、複数の可動支点ロッド1によ
り押板16を内側より支持し耐圧力を分担されるように
なっている。そして、支持側板12が押板16に固定さ
れ外枠9に取り付けられる前のジヤツキフレーム11の
組み立てられた状態を示し、支持側板12は第5図に示
す如くボルト13とジヤツキフレーム外枠9に設けられ
たねじ穴13aによりジヤツキフレーム部11に固定さ
れるようになっている。After the push plate 16 is formed into a required three-dimensional curved surface by a method described later, it is fixedly connected to the support side plate 12 by a welding portion 19 to form a mold for forming a two-dimensional curved surface. The push plate 16 is provided with water holes 18 as required, and the water cooling prevents thermal deformation of the press plate 16 surface during hot processing and the workpiece 20.
The cooling rate is controlled. 3 to 5 show the main components of the molding device.
6 are shown as hollow molded parts such as middle shells, which are combined and connected by welding or the like. FIG. 4 shows the jack frame part 11 in which the push plate 16 is held by movable fulcrum rods 1, and the push plate 16 is supported from the inside by a plurality of movable fulcrum rods 1, so that the withstand pressure is shared. . 5 shows the assembled state of the jack frame 11 before the support side plate 12 is fixed to the push plate 16 and attached to the outer frame 9, and the support side plate 12 is attached to the bolt 13 and the jack frame outer frame as shown in FIG. It is fixed to the jack frame part 11 through a screw hole 13a provided in the jack frame part 9.
そして、必要とする三次元曲面を形成するための所定の
高さに突設された支持側板12と同じく、ジヤツキフレ
ーム部11に結合され、各可動支点毎にて必要高さの計
算寸法りにセットされた各可動支点部6とにより押板1
6のプレス加圧面となる必要な三次元曲面が形成される
。上部プレス32においても下型プレス33と同様に、
支持側板12、各可動支点ロッド1が、この必要とする
三次元曲面に形成される。各可動支点部6のそれぞれの
高さの設定は、受圧ヘッド2の接する必要曲面が一定し
ないため、受圧ヘッド2の球半径rの球心位置を、計算
寸法りに設定することにより成形精度が確保される。受
圧ヘッド2の構造は、第9図に示す半球形構造と、第1
0図に示す公知の球面継手方式の構造があるが1、両者
共に必要曲面高さに半径rをもって接する球心位置で計
算寸法りを設定するようになっている。また、受圧ヘッ
ド2の構造は接触部が球面の場合について述べたが、三
次元曲面に対応し押板16を押圧するのに適した曲面形
状であることが好ましい。The support side plate 12, which is protruded at a predetermined height to form the required three-dimensional curved surface, is connected to the jack frame part 11, and the required height is calculated for each movable fulcrum. Each movable fulcrum part 6 set in
A necessary three-dimensional curved surface that becomes the pressing surface of No. 6 is formed. In the upper press 32, similarly to the lower press 33,
The support side plate 12 and each movable fulcrum rod 1 are formed into the required three-dimensional curved surface. The height of each movable fulcrum part 6 is determined by setting the spherical center position of the spherical radius r of the pressure receiving head 2 according to the calculated dimension, since the necessary curved surface that the pressure receiving head 2 contacts is not constant. Secured. The structure of the pressure receiving head 2 is a hemispherical structure shown in FIG.
There is a known spherical joint type structure shown in Fig. 1. In both cases, the calculated dimensions are set at the spherical center position that touches the required curved surface height with radius r. Moreover, although the structure of the pressure receiving head 2 has been described in the case where the contact portion is a spherical surface, it is preferable that the pressure receiving head 2 has a curved shape suitable for pressing the press plate 16 corresponding to a three-dimensional curved surface.
次に、押板16を必要とする三次元曲面に成形する順序
(方法)について第6図ないし第8図を用いて説明する
。まず、第6図に示す如く上下型面となる一対の押板1
6を、ダミープレート16゜16の両面に仮付溶接部2
2により固定する。尚、ダミープレート16の厚さは被
加工材20とほぼ同一の厚さが好ましい。押板16に設
けられている通水孔18は、押板16の板厚の1/2以
下の穴径を有して形成されており、受圧ヘッド2と接触
する可動支点接点Tと重なることがない位置に設けられ
、通水穴18の穴径が板厚の1/2以下であることによ
りダミープレート21の挟着時に潰れることがない。そ
して、第16図に示す状態の押板16及びダミープレー
ト21を、加熱炉により1000℃以上に赤熱し十分に
軟質化させ。Next, the order (method) of forming the push plate 16 into a required three-dimensional curved surface will be explained using FIGS. 6 to 8. First, as shown in FIG.
6 to both sides of the dummy plate 16°16 at the temporary welding part 2.
Fix by 2. The thickness of the dummy plate 16 is preferably approximately the same as that of the workpiece 20. The water passage hole 18 provided in the push plate 16 is formed to have a hole diameter of 1/2 or less of the thickness of the push plate 16, and overlaps with the movable fulcrum contact T that contacts the pressure receiving head 2. Since the hole diameter of the water passage hole 18 is 1/2 or less of the plate thickness, the dummy plate 21 will not be crushed when it is clamped. Then, the press plate 16 and the dummy plate 21 in the state shown in FIG. 16 are heated to red-hot temperatures of 1000° C. or higher in a heating furnace to make them sufficiently soft.
第7図のように上下一対の三次元曲面状の接点を有する
支持側板12.可動支点部6を有するジヤツキフレーム
部11よりなる成形装置によって加圧成形する。この場
合に押板16.可動支点ロッド1及び支持側板12は冷
却しない。この理由は冷却すると押板16の変形が拘束
されて支持側板12、可動支点ロッド1による所望の三
次元曲面を素直に正確に形成することができぬためであ
る。As shown in FIG. 7, the support side plate 12 has a pair of upper and lower three-dimensionally curved contact points. Pressure molding is performed using a molding device consisting of a jack frame portion 11 having a movable fulcrum portion 6. In this case, the push plate 16. The movable fulcrum rod 1 and the support side plate 12 are not cooled. The reason for this is that when cooled, the deformation of the press plate 16 is restricted, making it impossible for the supporting side plates 12 and the movable fulcrum rod 1 to form a desired three-dimensional curved surface obediently and accurately.
第8図は加圧成形が完了した状態であり、加圧成形が完
了した状態にて押板16は溶接部19により支持側板1
2に強固に固定され第3図に示す成形金型が形成される
。押板16とダミープレート21とを接合していた接続
部22は加圧成形時の位相変形の差により破断するが、
破断しない場合は溶断等の方法により溶接部22を除去
し、成形完了したダミープレート21を除去する。そし
て、押板16と支持側板12とが溶接部19によって接
合固定されて中空部が押板16.支持側板12及びジヤ
ツキフレーム部11によって形成される状態となったこ
とにより、プレス上下型32゜33の一対の三次元曲面
成形装置が完成する。−方、ダミープレート21は後日
成形精度の確認に使用することができる。FIG. 8 shows a state in which pressure forming has been completed.
2 to form a molding die shown in FIG. The connecting portion 22 that joined the press plate 16 and the dummy plate 21 breaks due to the difference in phase deformation during pressure molding, but
If it does not break, the welded portion 22 is removed by a method such as fusing, and the dummy plate 21 that has been formed is removed. Then, the push plate 16 and the support side plate 12 are joined and fixed by the welded portion 19, and the hollow portion is formed by the push plate 16. With the supporting side plates 12 and the jack frame portion 11 now formed, a pair of three-dimensional curved surface molding devices including upper and lower press dies 32 and 33 are completed. - On the other hand, the dummy plate 21 can be used to confirm molding accuracy at a later date.
次に、ダミープレート21が除去された後、押板16,
16間による成形加工を第11図により説明する。予め
成形したダミープレート2】の成形精度確認した後、ま
たは試験作業の結果に基づいて、押板16の曲面精度の
修正を、可動支点部6を調整して行っておく。可動支点
部6が内蔵される中空部には冷却媒体Aが送給され、押
板16内には冷却水Wが供給されて冷却される。このよ
うな準備がなされた後、上部プレステーブル24゜下部
プレステーブル23にそれぞれ取り付けられた上部プレ
ス32.下部プレス33からなる一対の三次元成形装置
により、予め必要な温度に加熱された被加工材20を図
示の如くセットする。そして、成形圧力Pを加えて成形
し一定温度まで加圧状態を続行し押板16の面による冷
却効果により冷却した後に取り出して成形加工が完了す
る。Next, after the dummy plate 21 is removed, the push plate 16,
The molding process using the 16-piece molding process will be explained with reference to FIG. 11. After confirming the molding accuracy of the pre-formed dummy plate 2, or based on the results of test work, the curved surface accuracy of the push plate 16 is corrected by adjusting the movable fulcrum portion 6. A cooling medium A is supplied to the hollow part in which the movable fulcrum part 6 is built, and a cooling water W is supplied to the inside of the push plate 16 for cooling. After such preparations have been made, the upper presses 32. A workpiece 20, which has been heated in advance to a required temperature, is set as shown in the figure by a pair of three-dimensional forming devices comprising a lower press 33. Then, molding is performed by applying a molding pressure P, and the pressurized state is continued until a certain temperature is reached, and after being cooled by the cooling effect of the surface of the press plate 16, the molding process is completed.
本実施例においては、複数個の可動支点ロッド1と支持
側板12との組合せにより、支点部の成形荷重を分担支
持するものであり、第2図に示す如く成形された被加工
材20が鞍形形状であるため、最大荷重部分が相対向す
る支持側板12゜12部分となってこれらの支点部の成
形荷重を分担支持するものであり、成形時の大半の荷重
は支持側板12の荷重負担により進行し、可動支点部6
は成形時の最終段階における精度を向上させるため仕上
成形荷重を分担する程度の状態となっている。このため
、支持側板12は押板16面の最大突起部を含む断面の
位置に配置する必要がある。In this embodiment, the forming load of the fulcrum part is shared and supported by a combination of a plurality of movable fulcrum rods 1 and supporting side plates 12, and the formed workpiece 20 is placed in the saddle as shown in FIG. Because of the shape, the maximum load part becomes the supporting side plate 12°12 part facing each other and supports the forming load of these fulcrum parts, and most of the load during forming is borne by the supporting side plate 12. The movable fulcrum part 6
In order to improve accuracy in the final stage of molding, the final molding load is shared. For this reason, the support side plate 12 needs to be placed at the position of the cross section that includes the largest protrusion on the surface of the push plate 16.
第12図(イ)は第1図ないし第11図で説明した鞍形
形状曲面に形成された被加工材20の斜視図、(ロ)は
(イ)を成形する上下部プレスの支持側板の対応関係を
示す説明図である。(ロ)に示す形状では上下型押面と
も最大突起部が外周部にあるため、最大突起部に対応し
取り付ける支持側板12は外枠を形成する配置構造であ
る。第13図(イ)は他の実施例の球面状曲面の被成形
後の被加工材の斜視図、(ロ)は(イ)を成形する上下
部プレスの支持側板が最大荷重部分に配設された状態を
示す説明図である。(ロ)に示す形状では、上型は最大
突起部のある中心を通る直交する交叉線上に最大加圧力
に対応する支持側板12が配設されており、下型では外
枠部分に支持側板12が配置されている。そして、支持
側板12及び複数の可動支点ロッド1による三次元曲面
の形成は、加圧変形させる主体が支持側板12であり、
可動支点ロッド1はそれぞれの押板16に接する部分を
抑圧変形するものであり、従って、支持側板12の接し
ない部分はそれぞれ可動支点ロッド1により仕上げ形成
されることになる。FIG. 12(A) is a perspective view of the workpiece 20 formed into the saddle-shaped curved surface explained in FIGS. 1 to 11, and FIG. It is an explanatory diagram showing correspondence. In the shape shown in (b), since the maximum protrusions are located on the outer periphery of both the upper and lower mold pressing surfaces, the supporting side plates 12 attached corresponding to the largest protrusions are arranged to form an outer frame. Figure 13 (a) is a perspective view of the workpiece after being formed into a spherical curved surface in another embodiment, and (b) is a support side plate of the upper and lower presses for forming (a) arranged at the maximum load area. FIG. In the shape shown in (B), the upper mold has supporting side plates 12 corresponding to the maximum pressing force arranged on orthogonal intersecting lines passing through the center of the maximum protrusion, and the lower mold has supporting side plates 12 on the outer frame part. is located. In the formation of a three-dimensional curved surface by the supporting side plate 12 and the plurality of movable fulcrum rods 1, the main body that is pressurized and deformed is the supporting side plate 12,
The movable fulcrum rod 1 suppresses and deforms the portions that contact the respective push plates 16, and therefore, the portions of the support side plates 12 that do not come in contact are finished by the movable fulcrum rods 1, respectively.
上記したように本実施例では、まず、ダミープレート2
1を用いて必要とする三次元曲面を有する上下プレス3
2.33の加工面となる押板16゜16の三次元曲面を
、該曲面のそれぞれの部分を抑圧形成する複数の可動支
点ロッド1と、この可動支点ロッド1群を囲んで被加工
材20の周辺部を抑圧形成する支持側板12とにより形
成する。As mentioned above, in this embodiment, first, the dummy plate 2
Upper and lower press 3 having the required three-dimensional curved surface using 1
The three-dimensional curved surface of the push plate 16° 16, which becomes the processing surface of 2.33, is formed by a plurality of movable fulcrum rods 1 that press down and form respective parts of the curved surface, and a workpiece 20 surrounding this group of movable fulcrum rods. It is formed by a support side plate 12 that compresses the peripheral portion of the support side plate 12.
そして、この押板16,16を上下部プレス32゜33
のプレス加圧面となるように上下プレスに取り付け、被
加工材20から所望の三次元曲面を有する被成形品にプ
レス加工する。即ち、従来の棒形金型に対応するものを
複数の可動支点部6、それぞれ上下一対の支持側板12
と押板16とにより形成するものであり、可動支点部6
は常時(共用でき、三次元曲面に応じ支持1側板12と
押板16とを製作すればよい。従って、必要とするそれ
ぞれの三次元曲面を有する成形品をプレス加工の都度、
該三次元曲面を有する押板16を作成した後、この押板
16を用いてプレス成形品を製作する。このため、従来
の如き縮型を不要とし多くの作業工数を必要とすること
がない。また、プレス成形曲面精度を高めることがきわ
めて容易で、高い耐久性を有しており、汎用プレス金型
にジヤツキフレーム部11.可動支点部6.支持側板部
15、押板16からなる成形装置を取り付け、プレス型
の抑圧機構を利用することができ、さらに押板16は被
加工材2oの冷却速度を制御することもできる。Then, press these press plates 16, 16 into upper and lower presses 32°33
It is attached to the upper and lower presses so that the pressing surface becomes the pressing surface, and the workpiece 20 is press-worked into a molded product having a desired three-dimensional curved surface. That is, a conventional rod-shaped mold has a plurality of movable fulcrum parts 6 and a pair of upper and lower supporting side plates 12, respectively.
and a push plate 16, and the movable fulcrum part 6
can be shared at all times, and the support 1 side plate 12 and press plate 16 can be manufactured according to the three-dimensional curved surface.Therefore, each time a molded product with the required three-dimensional curved surface is pressed,
After creating the press plate 16 having the three-dimensional curved surface, a press molded product is manufactured using this press plate 16. Therefore, there is no need to shrink the mold as in the past, and there is no need for a large number of man-hours. In addition, it is extremely easy to improve the precision of the press-molded curved surface, and it has high durability. Movable fulcrum part 6. A forming device consisting of a support side plate 15 and a press plate 16 is attached, and a press-type suppression mechanism can be used, and the press plate 16 can also control the cooling rate of the workpiece 2o.
次に、実験的に本実施例の方法を実施した結果を以下に
説明する。上記したようにダミープレート21を用いて
所望の三次元曲面を押板16に形成した後、該押板16
を用い、極厚板の板厚が80mm、縦横が1.5MX1
.5Mの13Cr系ステンレス鋼板をほぼ鞍形の三次元
曲面に成形する場合、板厚50ninの軟鋼材の支持板
12で第12図(ロ)の如く外枠を形成し、950’C
に加熱された状態の被加工材20に1200トンの荷重
を加え、16個の可動支点ロッド1と支持側板12とに
より支持負担し成形した。可動支点部6の1点当りの負
担荷重は実測の結果、最大20トンであり、支持側板1
2を用いないで複数の可動支点ロッドのみで成形した場
合の30%以下の小さな荷重負担で成形が可能であった
。また、本実施例の必要曲面に対する成形精度は、押板
16を成形しこの押板16により被加工材20をプレス
成形し、後口、再度この押板16を利用する場合の再現
精度を含め、±2.0I以下であった。Next, the results of experimentally implementing the method of this example will be described below. After forming a desired three-dimensional curved surface on the press plate 16 using the dummy plate 21 as described above, the press plate 16
The thickness of the extra-thick plate is 80mm, and the length and width are 1.5MX1.
.. When forming a 5M 13Cr stainless steel plate into a nearly saddle-shaped three-dimensional curved surface, the outer frame is formed using a support plate 12 made of mild steel with a plate thickness of 50 nin as shown in FIG.
A load of 1,200 tons was applied to the heated workpiece 20, and 16 movable fulcrum rods 1 and supporting side plates 12 supported it and formed it. As a result of actual measurements, the load per point of the movable fulcrum part 6 is a maximum of 20 tons, and the supporting side plate 1
Molding was possible with a small load burden of 30% or less compared to when molding was performed using only a plurality of movable fulcrum rods without using 2. In addition, the forming accuracy for the required curved surface in this embodiment includes the reproducibility accuracy when forming the press plate 16, press-forming the workpiece 20 with this press plate 16, and using this press plate 16 again at the rear end. , ±2.0I or less.
このように本実施例の極厚板三次元曲面プレス成形方法
においては、まず、プレス成形により被加工材に所望の
三次元曲面が形成されるような押板を作成するようにし
ている。そして、この押板の作成は、支持側板と複数の
可動支点ロッドとにより押板相互間に加熱されたダミー
プレートを挟持しプレス成形し行なっている。次に、ダ
ミープレートを除去し支持側板に固定された押板相互間
に被加工材を挟みプレス成形するようにしている。As described above, in the three-dimensional curved surface press molding method of an extremely thick plate according to the present embodiment, first, a press plate is created by press molding so that a desired three-dimensional curved surface is formed on the workpiece. The push plate is produced by press-forming a heated dummy plate held between the support side plates and a plurality of movable fulcrum rods. Next, the dummy plate is removed, and the workpiece is sandwiched between press plates fixed to the supporting side plates and press-formed.
従って、所望の三次元曲面を有するプレス成形品を得る
場合に、それぞれの異なった三次元曲面を有する成形品
毎に押板を製作して行なうので、従来の如き線型を不要
とし、支持側板及び可動支点ロッドを取り付けた上下プ
レスを汎用の加圧機構に取付は利用ができる。そして、
多種類のそれぞれの三次元曲面に対応し成形ができるプ
レス型の金型を、それぞれの曲面に対応しその都度形成
することがきわめて容易であり、該金型が高精度、高耐
久性を有し経済性を向上でき、また、可動支点ロッドの
加圧力を低減できる。Therefore, when obtaining a press-molded product with a desired three-dimensional curved surface, a press plate is manufactured for each molded product with a different three-dimensional curved surface. A vertical press with a movable fulcrum rod can be attached to a general-purpose pressurizing mechanism. and,
It is extremely easy to form press molds that can accommodate various types of three-dimensional curved surfaces on a case-by-case basis, and the molds have high precision and high durability. This makes it possible to improve economic efficiency and reduce the pressing force on the movable fulcrum rod.
以上記述した如く本発明の極厚板三次元曲面プレス成形
方法によれば、汎用プレスの加圧装置に取付けができる
と共に多種類のそれぞれの三次元曲面に対応し成形がで
きるプレス型面の金型をその都度形成することがきわめ
て簡単、容易で、しかも、該金型が高精度、高耐久性を
有し経済的に極厚板を三次元曲面に熱間加工が可動支点
ロッドの加圧力を低減し成形できる効果を有するもので
ある。As described above, according to the method for press forming an extremely thick plate with a three-dimensional curved surface according to the present invention, the press mold surface can be attached to a pressurizing device of a general-purpose press and can be formed to correspond to a wide variety of three-dimensional curved surfaces. It is extremely simple and easy to form a mold each time, and the mold has high precision and high durability, and it is possible to economically hot-process an extremely thick plate into a three-dimensional curved surface by using the pressurizing force of the movable fulcrum rod. This has the effect of reducing and molding.
第1図は本発明の厚板三次元曲面プレス成形方法を実施
する成形装置の説明図、第2図は第1図の上部プレスを
除く縦断面図、第3図は第1図の金型概念部の結合関係
を示す斜視図、第4図は第1図の下部プレスの斜視図、
第5図は第4図のジヤツキフレーム部に対する支持側板
組立説明図、第6図はダミープレートと第1図の押板と
の素材組立状態の斜視図、第7図、第8図はそれぞれ第
6図のダミープレートを第1図の成形装置を用し)加圧
成形前及び成形後の縦断面図、第9図、第10図はそれ
ぞれ第1図の可動支点ロッドの受圧ヘッドの断面説明図
、第11図(イ)は第1図の成形装置により被加工材を
成形直前の説明図、(ロ)は(イ)により成形された被
加工材の断面図、第12図(イ)は第1図の装置により
成形された成形品の斜視図、(ロ)は(イ)の成形品を
成形する上下型の支持側板説明図、第13図(イ)は第
1図の成形装置により成形される他の実施例の成形品の
斜視図、(ロ)は(イ)の成形品を成形する上下型の支
持側板説明図、第14図、第15図はそれぞれ従来の一
体縮型金型、格子構造金型のそれぞれ雄型、被成形品、
雌型を結合の順に配列した説明図である。
1、・・・可動支点ロッド、2・・・受圧ヘッド、12
・・・支持側板、16・・・押板、20・・・被加工材
、21・・・ダミープレート、32・・・上部プレス、
33・・・下部プ第 1 口
/4−・押板 第Z7
猥3印
寮4邑
第5 ロ
$12の c口)
め140
めISのFig. 1 is an explanatory diagram of a forming apparatus for carrying out the thick plate three-dimensional curved surface press forming method of the present invention, Fig. 2 is a longitudinal cross-sectional view excluding the upper press of Fig. 1, and Fig. 3 is the mold of Fig. 1. A perspective view showing the connection relationship of conceptual parts; FIG. 4 is a perspective view of the lower press in FIG. 1;
Fig. 5 is an explanatory diagram of the assembly of the supporting side plate for the jack frame part of Fig. 4, Fig. 6 is a perspective view of the assembled state of the materials of the dummy plate and the push plate of Fig. 1, and Figs. 7 and 8 respectively. The dummy plate shown in Fig. 6 was formed using the molding device shown in Fig. 1), and the vertical cross-sectional views before and after the pressure forming were performed. Figs. Explanatory drawings, Fig. 11 (a) is an explanatory view of the workpiece immediately before being formed by the forming apparatus of Fig. 1, (b) is a cross-sectional view of the workpiece formed by (a), and Fig. 12 (i) ) is a perspective view of the molded product molded by the apparatus shown in Figure 1, (B) is an explanatory diagram of the supporting side plates of the upper and lower molds for molding the molded product in (A), and Figure 13 (A) is the molded product shown in Figure 1. A perspective view of a molded product of another embodiment molded by the apparatus, (B) is an explanatory diagram of the supporting side plates of the upper and lower molds for molding the molded product of (B), and FIGS. The male mold, the molded product, and the lattice structure mold respectively.
It is an explanatory diagram in which female molds are arranged in order of bonding. 1. Movable fulcrum rod, 2... Pressure receiving head, 12
...Supporting side plate, 16...Press plate, 20...Work material, 21...Dummy plate, 32...Upper press,
33...lower part No. 1/4--Press board No. Z7 Obai 3 Inryo 4 Ou No. 5 Lo $12 c) Me 140 Me IS
Claims (1)
に挟み三次元曲面にプレス成形する方法において、上記
上下部プレスが、内部に冷媒が流通し冷却されると共に
上記曲面のプレス加圧面を形成する押板と、該押板面に
受圧ヘッドを介し上記曲面を押圧成形可能に接し該曲面
形状のそれぞれの位置に対応し突出する高さ寸法が調整
制御可能に形成され、かつ、取付位置において流動する
冷媒を介して冷却されるように形成されている複数の可
動支点ロッドと、該可動支点ロッド全体の周囲を囲む位
置もしくは該可動支点ロッドを複数個に分割する位置に
配設され上記可動支点ロッドと共に冷却されプレス時に
上記被加工材の被押圧変形部の形状に対応し該被加工材
を主体となつて加圧変形させる最大突起部を備えた支持
側板とを有して形成され、上記上下部プレスに取り付け
られている上記可動支点ロッド及び上記支持側板がプレ
ス成形される上記被加工材の所望の上記三次元曲面形状
に応じそれぞれ突出高さが調整制御され、対向配設され
る該可動支点ロッドの上記受圧ヘッド及び該支持側板の
それぞれの相互間に、上下面のそれぞれに上記押板が固
着されていると共に加熱されたダミープレートを挟持し
プレス加工し該押板の該ダミープレート接合面に上記三
次元曲面を形成した後、該ダミープレートプレス状態の
それぞれ突出高さが調整されたままの上記支持側板に上
記押板を固着すると共に上記受圧ヘッドを該押板に接触
させ該ダミープレートを分離除去し、該押板、上記可動
支点ロッド及び上記支持側板を低温状態に保持しつつ該
押板相互間に加熱された上記被加工材を挟みプレス加工
することを特徴とする極厚板三次元曲面プレス成形方法
。1. In a method of press-forming a heated thick plate of workpiece material between upper and lower presses into a three-dimensional curved surface, the upper and lower presses are cooled by a coolant flowing inside them, and press the curved surface. A press plate forming a pressurizing surface, and a height dimension of the press plate that contacts the press plate surface through a pressure receiving head so as to be able to press-form the curved surface and protrude corresponding to each position of the curved surface shape can be adjusted and controlled; , a plurality of movable fulcrum rods formed to be cooled via a flowing refrigerant at the mounting position, and arranged at a position surrounding the entire movable fulcrum rod or at a position where the movable fulcrum rod is divided into a plurality of pieces. a support side plate provided with a maximum protrusion that is cooled together with the movable fulcrum rod and that corresponds to the shape of the pressed deformation portion of the workpiece during pressing and mainly pressurizes and deforms the workpiece. The protruding height of the movable fulcrum rod and the supporting side plate attached to the upper and lower presses are adjusted and controlled according to the desired three-dimensional curved shape of the workpiece to be press-formed, and The pressing plate is fixed to the upper and lower surfaces of the pressure receiving head and the supporting side plate of the movable fulcrum rod, and a heated dummy plate is sandwiched and pressed. After forming the three-dimensional curved surface on the dummy plate joint surface of the plate, the pressing plate is fixed to the supporting side plate whose protrusion height is adjusted while the dummy plate is pressed, and the pressure receiving head is pressed. Separating and removing the dummy plate in contact with the plate, and sandwiching the heated workpiece between the press plates while maintaining the press plate, the movable fulcrum rod, and the support side plate at a low temperature, and press-working the heated workpiece. A method for press forming extremely thick plates with three-dimensional curved surfaces.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28942287A JPH0722791B2 (en) | 1987-11-18 | 1987-11-18 | Extra thick plate 3D curved surface press forming method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28942287A JPH0722791B2 (en) | 1987-11-18 | 1987-11-18 | Extra thick plate 3D curved surface press forming method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01133622A true JPH01133622A (en) | 1989-05-25 |
JPH0722791B2 JPH0722791B2 (en) | 1995-03-15 |
Family
ID=17743038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28942287A Expired - Fee Related JPH0722791B2 (en) | 1987-11-18 | 1987-11-18 | Extra thick plate 3D curved surface press forming method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0722791B2 (en) |
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CN108994177A (en) * | 2018-08-01 | 2018-12-14 | 吉林大学 | The calendering mold of abnormal curved surface Quick-forming |
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---|---|
JPH0722791B2 (en) | 1995-03-15 |
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