JPS60106628A - Electromagnetic forming device - Google Patents

Electromagnetic forming device

Info

Publication number
JPS60106628A
JPS60106628A JP58214848A JP21484883A JPS60106628A JP S60106628 A JPS60106628 A JP S60106628A JP 58214848 A JP58214848 A JP 58214848A JP 21484883 A JP21484883 A JP 21484883A JP S60106628 A JPS60106628 A JP S60106628A
Authority
JP
Japan
Prior art keywords
work
forming die
workpiece
solenoid coil
current
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
Application number
JP58214848A
Other languages
Japanese (ja)
Inventor
Takeshi Mukai
向井　武志
Katsuhisa Yokoyama
横山　勝久
Yukio Nakazawa
中沢　行雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takeuchi Press Industries Co Ltd
Nichicon Corp
Original Assignee
Takeuchi Press Industries Co Ltd
Nichicon Capacitor Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Takeuchi Press Industries Co Ltd, Nichicon Capacitor Ltd filed Critical Takeuchi Press Industries Co Ltd
Priority to JP58214848A priority Critical patent/JPS60106628A/en
Publication of JPS60106628A publication Critical patent/JPS60106628A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces

Abstract

PURPOSE:To prevent local deformation of a work due to buckling in forming a metal to be worked using electromagnetic force by an electromagnetic forming device by vacuumizing the air between a forming die and the work. CONSTITUTION:The work 3 made of metal is put in the forming die 4 and a solenoid coil 2 is placed in it. After vacuumizing the air in the space G between the forming die 4 and work 3 by a pressure reducing device 5, large current is applied to the solenoid coil 2 momentarily from a current source 1. A magnetic field is generated between the solenoid coil 2 and work 3, and at the same time, current is induced in the work 3. Repulsion F is generated by interaction of the magnetic field and induced current, and the work 3 is thrusted against the forming die 4 and formed along the forming die 4. In this case, a buckling phenomenon due to air in the space between the two does not occur, and a formed product conforming to the forming die is obtained.

Description

【発明の詳細な説明】 本発明はｔｌｉｌ［成形装置の改良に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in tlil molding equipment.

従来、電磁成形装置を用いて被加工物である金属を電磁
力によって成形する場合、被加工物は高速（数１０μｓ
）で成形するため、成形型と被加工物の開の空間の空気
（気体）は成形型の外部へ脱出しきれず加圧圧縮され、
被加工物に電磁力とは反対の方向に押し戻す力として作
用する。以下この現象をバックリングと呼ぶことにする
。Conventionally, when forming a metal workpiece by electromagnetic force using an electromagnetic forming device, the workpiece is formed at high speed (several tens of microseconds).
), the air (gas) in the open space between the mold and the workpiece cannot escape to the outside of the mold and is compressed under pressure.
It acts on the workpiece as a force that pushes it back in the opposite direction to the electromagnetic force. Hereinafter, this phenomenon will be referred to as buckling.

電磁成形装置は第１図に示すように電流源Ｓ。The electromagnetic forming device has a current source S as shown in FIG.

から大電流を通電スイッチＳを介してソレノイドコイル
ＳＣへ流す。電磁銹導の原理によってこの電流は被加工
物Ａにも流れる。この電流とソレノイドコイＩｖＳＣに
よる磁場との相互作用によｐ。A large current is passed from the energizing switch S to the solenoid coil SC. This current also flows through the workpiece A due to the principle of electromagnetic corrosion. p due to the interaction of this current with the magnetic field caused by the solenoid carp IvSC.

被加工ｅＩＡに半径方向の力Ｆが作用する。A radial force F acts on the workpiece eIA.

上記のように電磁力を利用した電磁成形装置において、
効率よく成形加工するには被加工物の表皮効果による電
流減衰より高速のソレノイドコイルによる磁場発生を必
要とする。従って上記したように被加工物は高速に成形
加工される。このとき成形型がある場合はバックリング
が起とシ、局部的に変形を起こしたシまた被加コー物の
表面にしわなどを生ずる欠点があった。In an electromagnetic forming device that uses electromagnetic force as described above,
Efficient forming requires a solenoid coil to generate a magnetic field faster than the current attenuation due to the skin effect of the workpiece. Therefore, as described above, the workpiece is formed at high speed. If a mold is used at this time, there are drawbacks such as buckling, local deformation, and wrinkles on the surface of the coated material.

本発明は上記の欠点を除去した電磁成形装置を提供しよ
うとするものである。The present invention seeks to provide an electromagnetic forming apparatus that eliminates the above-mentioned drawbacks.

本発明は上記バックリングの要素である被加工物と成形
型との間の空間の空気（気体）を被加工物成形前に脱出
除去し、従来の電磁成形装置の欠点である局部的変形を
防止し、成形型にそって成形させるものである。The present invention eliminates the air (gas) in the space between the workpiece and the mold, which is an element of the buckling, before molding the workpiece, thereby eliminating local deformation, which is a drawback of conventional electromagnetic forming equipment. This prevents the mold from forming and allows it to be molded along the mold.

以下、本発明の実施例を第２図について説明する。Hereinafter, an embodiment of the present invention will be described with reference to FIG.

第２図において、１は電流源、２はソレノイドコイル、
３は被加工物、４は成形型、５は減圧装置である。In Fig. 2, 1 is a current source, 2 is a solenoid coil,
3 is a workpiece, 4 is a mold, and 5 is a pressure reducing device.

電流減ｌよシソレノイドコイル２に電流を流すと、ソレ
ノイドコイル２と被加工物３の間に磁場を発生するとと
もに被加工物３に電流全誘起する。When a current is passed through the solenoid coil 2, a magnetic field is generated between the solenoid coil 2 and the workpiece 3, and a full current is induced in the workpiece 3.

この磁場と′電流の相互作用によシ反発力Ｆが生じる。The interaction between this magnetic field and the current generates a repulsive force F.

この反発力Ｆにより被加工物３は図において外側（成形
型の方向）へ変形して成形される。Due to this repulsive force F, the workpiece 3 is deformed and molded outward (toward the mold) in the figure.

この際、被加工物３と成形型４との間の空間部Ｇの空気
（気体）を前もって減圧装置５で脱出除去しておくと、
空気（気体）は関連に体積が減っても殆んど圧力が上が
らない。従って、上述したようなパックリング現象が起
こらず、被加工物３を成形型通りに成形することができ
るようになった。At this time, if the air (gas) in the space G between the workpiece 3 and the mold 4 is escaped and removed in advance using the decompression device 5,
In air (gas), the pressure hardly increases even if the volume decreases. Therefore, the above-mentioned pack ring phenomenon does not occur, and the workpiece 3 can now be molded according to the mold.

斜上のように本発明の電磁成形装置は、被加工物と成形
型の間の空間部の空気（気体）を除去して減圧すること
によシ、被加工物のバックリング現象などを防止でき、
加工効率が向上するとともに被加工物の表面にしわなど
がなくな９、成形型も夕の成形加工ができるなどの効果
が７！ｂシ、工柴的ならびに実用的価値大なるものであ
る。As mentioned above, the electromagnetic forming apparatus of the present invention prevents the buckling phenomenon of the workpiece by removing air (gas) in the space between the workpiece and the mold to reduce the pressure. I can,
In addition to improving processing efficiency, there are no wrinkles on the surface of the workpiece9, and the mold can be molded evenly.7! It is of great technical and practical value.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は電磁成形装置の回路図、第２図は本弁明のｔ磁
成ル装置の説明図でめる。 ５ｏｓｌ心流源　ＳＣ，２：ソレノイドコイルＡ１３：
仮加工物　４：成形型 ５：減圧装＠　Ｓ：連電スイッチ Ｇ；空間部 特許出願人 日本コンデンサ工業株式会社 武内プレス工業株式会社FIG. 1 is a circuit diagram of the electromagnetic forming apparatus, and FIG. 2 is an explanatory diagram of the t-magnetic forming apparatus of the present invention. 5osl cardiac flow source SC, 2: Solenoid coil A13:
Temporary workpiece 4: Molding mold 5: Decompression device @ S: Connection switch G; Space patent applicant Nippon Capacitor Industry Co., Ltd. Takeuchi Press Industry Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 大電流源よシ通電スイッチを介してソレノイドコイルに
エネルギーを伝送してパルス磁場を発生させ、その電磁
力によって金属などの被加工物を成形加工する電磁成形
装置において、成形型と被加工物との間の空間部を減圧
せしめることを特徴とする電磁成形装置。In electromagnetic forming equipment, which transmits energy from a large current source to a solenoid coil via an energization switch to generate a pulsed magnetic field, and molds a workpiece such as metal using the electromagnetic force, the mold and workpiece are An electromagnetic forming device characterized by reducing pressure in a space between.
JP58214848A 1983-11-14 1983-11-14 Electromagnetic forming device Pending JPS60106628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58214848A JPS60106628A (en) 1983-11-14 1983-11-14 Electromagnetic forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58214848A JPS60106628A (en) 1983-11-14 1983-11-14 Electromagnetic forming device

Publications (1)

Publication Number Publication Date
JPS60106628A true JPS60106628A (en) 1985-06-12

Family

ID=16662541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58214848A Pending JPS60106628A (en) 1983-11-14 1983-11-14 Electromagnetic forming device

Country Status (1)

Country Link
JP (1) JPS60106628A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634364A (en) * 1995-12-04 1997-06-03 Reynolds Metals Company Segmented coil for use in electromagnetic can forming
US5687599A (en) * 1996-01-04 1997-11-18 Reynolds Metals Company Method of forming a can with an electromagnetically formed contoured sidewall and necked end
FR2913899A1 (en) * 2007-03-20 2008-09-26 Fundacion Labein Metallic sheet forming method for motor vehicle, involves forming part determined from stamped sheet, where stamped sheet is remained in place between forming parts using coil and spires integrated in one forming part

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542140A (en) * 1978-09-18 1980-03-25 Inoue Japax Res Inc Coil for electromagnetic forming
JPS55109522A (en) * 1979-02-14 1980-08-23 Inoue Japax Res Inc Electromagnetic forming apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542140A (en) * 1978-09-18 1980-03-25 Inoue Japax Res Inc Coil for electromagnetic forming
JPS55109522A (en) * 1979-02-14 1980-08-23 Inoue Japax Res Inc Electromagnetic forming apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634364A (en) * 1995-12-04 1997-06-03 Reynolds Metals Company Segmented coil for use in electromagnetic can forming
US5687599A (en) * 1996-01-04 1997-11-18 Reynolds Metals Company Method of forming a can with an electromagnetically formed contoured sidewall and necked end
FR2913899A1 (en) * 2007-03-20 2008-09-26 Fundacion Labein Metallic sheet forming method for motor vehicle, involves forming part determined from stamped sheet, where stamped sheet is remained in place between forming parts using coil and spires integrated in one forming part

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