JPH03230822A - Method for sealing gas pressure in forming using dies - Google Patents
Method for sealing gas pressure in forming using diesInfo
- Publication number
- JPH03230822A JPH03230822A JP2022164A JP2216490A JPH03230822A JP H03230822 A JPH03230822 A JP H03230822A JP 2022164 A JP2022164 A JP 2022164A JP 2216490 A JP2216490 A JP 2216490A JP H03230822 A JPH03230822 A JP H03230822A
- Authority
- JP
- Japan
- Prior art keywords
- dies
- mold
- workpiece
- gas pressure
- worked
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 19
- 238000007789 sealing Methods 0.000 title claims description 15
- 238000000465 moulding Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 abstract description 7
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 8
- 238000003754 machining Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、各種製品の超塑性成形加工等の金型を用いる
成形加工におけるガス圧シール方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gas pressure sealing method in molding processes using molds such as superplastic molding of various products.
従来、超塑性ガス圧成形に当ってのガス圧シールとして
は、次の方法が多用されていた。Conventionally, the following method has been frequently used for gas pressure sealing in superplastic gas pressure forming.
（１）第２図に示すように、対向して被加工材０１を挾
む金型０２，０３の一方の上型０２の周囲に設けた突起
０４を被加工材に喰い込ませる。(1) As shown in FIG. 2, a protrusion 04 provided around the upper mold 02 of one of the molds 02 and 03 that sandwich the workpiece 01 in opposition is inserted into the workpiece.
（２）または、第３図に示すように上型０２と被加工材
０１との間に銅線がどの軟質ワイヤ０５をはさむ。(2) Alternatively, as shown in FIG. 3, a soft wire 05 between the copper wire and the workpiece 01 is sandwiched between the upper die 02 and the workpiece 01.
以上のように、金型と被加工材をセントしガス圧シール
を行なった上、上型０２と被加工材０１との間にアルゴ
ン等の成形用ガスを導入すると共に、金型加圧力や）を
上型０２と下型０３に加え、これによって被加工材０１
を金型に密着させる方法が多用されている。As described above, after the mold and the workpiece are placed and sealed with gas pressure, a molding gas such as argon is introduced between the upper mold 02 and the workpiece 01, and the mold pressure and ) is added to the upper mold 02 and lower mold 03, and thereby the workpiece 01
A method of closely contacting the mold with the mold is often used.
前記の従来のガスシール方法では、次の解決すべき問題
点があった。The conventional gas sealing method described above has the following problems to be solved.
（１１上型に設けられた突起を被加工材に喰い込ませる
方法
成形形状が複雑（ねじれや曲面の複合面など）になると
、金型の加工が困難となり、被加工材板厚に適合する喰
い込み代の確保が困難となる。(11 Method of biting the protrusions provided on the upper mold into the workpiece material) If the molding shape becomes complex (such as a complex surface with a twist or curved surface), it will be difficult to process the mold, and it will not fit the thickness of the workpiece material. It becomes difficult to secure the allowance.
また、成形形状が単純であっても、多数回の使用によっ
て突起部が摩耗したり、下型の対抗する面が変形したシ
して、シール作用が劣化しやすい。Further, even if the molded shape is simple, the sealing effect is likely to deteriorate due to wear of the protrusion or deformation of the opposing surface of the lower die after multiple uses.
（２）軟質金属ワイヤを用いるシール法軟質ワイヤを使
用していても、多数回の使用によって上型の対抗面だけ
でなく下型の対抗面も除々に変形し、シール作用の劣化
を起す。(2) Sealing method using soft metal wire Even if a soft wire is used, not only the opposing surface of the upper mold but also the opposing surface of the lower mold gradually deforms due to repeated use, causing deterioration of the sealing effect.
また、ワイヤは変形するので再使用は不能である。Furthermore, the wire deforms and cannot be reused.
本発明は、以上の従来の方法における問題点を解決した
金型を用いる成形加工におけるガスシール方法を提供し
ようとするものである。The present invention aims to provide a gas sealing method for molding using a mold that solves the problems of the conventional methods described above.
本発明の金型な用いる成形加工のガス圧シール方法は、
１対の金型の間に被加工材を挾持して同被加−工材を成
形するに際して、成形用ガスが導入される一方の金型と
被加工材の互いに対向面の間の周辺部に、内圧を負荷し
た薄肉チューブを介在させた。The gas pressure sealing method for molding using the mold of the present invention is as follows:
When a workpiece is held between a pair of molds and the workpiece is molded, the peripheral area between one of the molds and the mutually opposing surfaces of the workpiece is introduced into which forming gas is introduced. A thin-walled tube to which internal pressure was applied was inserted.
本発明では、内圧が負荷された薄肉チューブは、一方の
金型と被加工材の間の周辺部に介在して両者の互いに対
向する面に密着し、同一方の金型と被加工材との間に導
入される成形用ガス圧をシールする。１対の金型の間隙
に変動があっても、内圧が負荷された薄肉チューブが変
形して、成形用ガス圧のシールを保った状態で金型間隙
の変動分が吸収される。これによって、成形用ガス圧の
シールが確実に行なわれる。In the present invention, the thin-walled tube loaded with internal pressure is interposed in the periphery between one of the molds and the workpiece, and is in close contact with the mutually opposing surfaces of both molds and the workpiece. The molding gas pressure introduced during the process is sealed. Even if there is a change in the gap between a pair of molds, the thin-walled tube loaded with internal pressure deforms and the change in the gap between the molds is absorbed while maintaining a molding gas pressure seal. This ensures that the molding gas pressure is sealed.
また、薄肉チューブは、その内圧に対応する面接触圧力
で金型と被加工材の面にソフトタンチし、金型の摩耗を
防止してその寿命を向上する。また更に、薄肉チューブ
は大きい金型間の間隙変動に対応することができ、金型
の加工精度を合理化してその加工費が低減し、複雑な形
状の金型の場合にこれが著しい。In addition, the thin-walled tube provides a soft tack to the surfaces of the mold and workpiece with surface contact pressure corresponding to its internal pressure, preventing wear of the mold and extending its life. Furthermore, thin-walled tubes can accommodate large gap variations between molds, streamlining mold machining accuracy and reducing machining costs, especially in the case of complex-shaped molds.
超塑性成形に適用された本発明の一実施例を第１図によ
って説明する。An embodiment of the present invention applied to superplastic forming will be described with reference to FIG.
２．３は、それぞれ対をなす上屋と下型であり、下Ｗ３
には凹凸が設けられ、また土星下面の周辺部の全周には
、内圧ｐが負荷された金属製の薄肉チューブ４が溶接さ
れている。2.3 are the shed and lower mold that form a pair, respectively, and the lower W3
A thin metal tube 4 loaded with an internal pressure p is welded to the entire circumference of the lower surface of Saturn.
被加工材１の超塑性成形に当っては、第１図中）に示す
ように、上型２と下型３とで被加工材１を挾持し、上屋
２と下型３に金型加圧力を加えると共に、被加工材１と
上型２との間に成形用ガスを導入することによって被加
工材１の成形が行なわれる。For superplastic forming of the workpiece 1, as shown in Fig. 1), the workpiece 1 is held between the upper die 2 and the lower die 3, and the mold is placed between the shed 2 and the lower die 3. The workpiece 1 is molded by applying pressure and introducing a molding gas between the workpiece 1 and the upper mold 2.
この際、内圧が負荷された薄肉チューブ４は、上屋２の
下面と被加工材ｌの上面に密着し、成形用ガス圧のシー
ルが行なわれる。また、金型加圧力を加えることによっ
て、上１ｉ１２と下型３との間隙が変化しても、薄肉チ
ューブ４は上型２の下面と被加工材１の上面に密着した
状態を保って変形し、ガス圧のシール作用を保持しなが
ら上下型の間隙の変動を吸収することができる。At this time, the thin-walled tube 4 loaded with internal pressure is brought into close contact with the lower surface of the shed 2 and the upper surface of the workpiece l, thereby sealing the molding gas pressure. In addition, even if the gap between the upper mold 1i12 and the lower mold 3 changes by applying pressure to the mold, the thin-walled tube 4 remains in close contact with the lower surface of the upper mold 2 and the upper surface of the workpiece 1 and deforms. However, it is possible to absorb fluctuations in the gap between the upper and lower molds while maintaining the gas pressure sealing effect.
本実施例では、以上の通シ、内圧が負荷された薄肉チュ
ーブ４によって、成形用ガスのガス圧のシールを確実に
行表うことができるが、また、前記薄肉チューブ４はそ
の内面に負荷される圧力ｐに対応する面接触圧力で上型
２の下面と被加工材１の上面にリフトタッチの密着し、
かつこの密着状態が保たれ、これによって、金型の摩耗
が防止され、金型の寿命が著しく向上する。また更に、
薄肉チューブ４は大きい上下製間の間隙変動に対応する
ことができ、金型の加工精度を合理化することができ、
その加工費の低減を図ることができ、複雑な形状の金型
の場合にこの効果が顕著である。In this embodiment, the gas pressure of the molding gas can be reliably sealed by the thin-walled tube 4 loaded with the above-mentioned passage and internal pressure. The lift touch is brought into close contact with the lower surface of the upper die 2 and the upper surface of the workpiece 1 with a surface contact pressure corresponding to the pressure p applied,
Moreover, this close contact state is maintained, thereby preventing wear of the mold and significantly improving the life of the mold. Furthermore,
The thin-walled tube 4 can accommodate large variations in the gap between the upper and lower parts, and can streamline the processing accuracy of the mold.
The processing cost can be reduced, and this effect is remarkable in the case of molds with complex shapes.
なお、前記の実施例では、薄肉チューブ４を上屋２の下
面に溶接し、金型のノーンドリンクを容易にしているが
、薄肉チューブを被加工材の上面に単に載置するように
してもよい。In the above embodiment, the thin-walled tube 4 is welded to the lower surface of the shed 2 to facilitate non-linking of the mold, but the thin-walled tube 4 may be simply placed on the upper surface of the workpiece. good.
本発明は次の効果を奏することができる。 The present invention can have the following effects.
（１） 薄肉チューブは、同チューブに負荷される圧
力に対応する面接触圧力で一方の金型と被加工材の面に
密着して成形用ガスのガス圧シールを行なう。従って、
従来の突起喰い込みによるシール方法やワイヤクールの
層性変形によるシール方法における高いシール圧にくら
べて、ソフトタッチとなるので、金型の寿命が著しく向
上する。(1) The thin-walled tube closely contacts the surfaces of one mold and the workpiece with a surface contact pressure corresponding to the pressure applied to the tube, and performs a gas pressure seal of the molding gas. Therefore,
Compared to the high sealing pressure of the conventional sealing method using protrusion biting or the sealing method using layered deformation of Wire Cool, the mold life is significantly improved due to the soft touch.
伐）薄肉チューブは変形が可能であって、大きな金型間
隙の変動にも対応することができる。Thin-walled tubes are deformable and can accommodate large mold gap variations.
従って、金型加工精度を合理化して金型加工費の低減を
図ることができる。特に複雑形状の金型の場合にこの効
果が顕著となる。Therefore, it is possible to rationalize the mold machining accuracy and reduce the mold machining cost. This effect is particularly noticeable in the case of molds with complex shapes.
第１図は本発明の一実施例を示す要部の断面図であって
、同図（ａ）は成形加工前の状態、同図（ｂ）は成形加
工中の状態をそれぞれ示す。第２図（ａ）は従来の金型
な用いる成形加工方法を示す断面図、第２図６）は第２
図（ａ）のＡ部の拡大断面図、第３図は従来の金型な用
いる他の成形加工方法の第２図（ｂ）に相当する断面図
である。
１・・・被加工材、
２・・・上型、
３・・・金型、
４・・・薄
肉チューブ。FIG. 1 is a sectional view of a main part of an embodiment of the present invention, with FIG. 1(a) showing the state before molding and FIG. 1(b) showing the state during molding. Figure 2 (a) is a sectional view showing the molding method used in the conventional mold, and Figure 2 (6) is a cross-sectional view showing the molding method used in the conventional mold.
FIG. 3 is an enlarged sectional view of part A in FIG. 3(a), and FIG. 3 is a sectional view corresponding to FIG. 2(b) of another molding method using a conventional mold. 1...Work material, 2...Upper die, 3...Mold, 4...Thin wall tube.
Claims (1)
形する金型を用いる成形加工において、成形ガスが導入
される一方の金型と被加工材の互いに対向する面の間の
周辺部に、内圧を負荷した薄肉チューブを介在させたこ
とを特徴とするガス圧シール方法。In a molding process using a mold in which a workpiece is held between a pair of molds and the workpiece is molded, the molding gas is introduced between the opposing surfaces of one of the molds and the workpiece. A gas pressure sealing method characterized by interposing a thin-walled tube loaded with internal pressure around the periphery of the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022164A JPH03230822A (en) | 1990-02-02 | 1990-02-02 | Method for sealing gas pressure in forming using dies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022164A JPH03230822A (en) | 1990-02-02 | 1990-02-02 | Method for sealing gas pressure in forming using dies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03230822A true JPH03230822A (en) | 1991-10-14 |
Family
ID=12075183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022164A Pending JPH03230822A (en) | 1990-02-02 | 1990-02-02 | Method for sealing gas pressure in forming using dies |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03230822A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6354124B1 (en) * | 1998-12-03 | 2002-03-12 | Kuka Werkzeugbau Schwarzenberg Gmbh | Method and apparatus for the hydraulic forming of workpieces |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62502736A (en) * | 1985-04-02 | 1987-10-22 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | A device that processes a workpiece using temperature shock and pressure shock caused by igniting a combustible gas mixture, especially a thermal deburring device |
| JPH01241330A (en) * | 1988-03-23 | 1989-09-26 | Mitsubishi Heavy Ind Ltd | Blank for superplastic forming |
-
1990
- 1990-02-02 JP JP2022164A patent/JPH03230822A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62502736A (en) * | 1985-04-02 | 1987-10-22 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | A device that processes a workpiece using temperature shock and pressure shock caused by igniting a combustible gas mixture, especially a thermal deburring device |
| JPH01241330A (en) * | 1988-03-23 | 1989-09-26 | Mitsubishi Heavy Ind Ltd | Blank for superplastic forming |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6354124B1 (en) * | 1998-12-03 | 2002-03-12 | Kuka Werkzeugbau Schwarzenberg Gmbh | Method and apparatus for the hydraulic forming of workpieces |
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