JPH01138024A - electromagnetic forming equipment - Google Patents
electromagnetic forming equipmentInfo
- Publication number
- JPH01138024A JPH01138024A JP62295532A JP29553287A JPH01138024A JP H01138024 A JPH01138024 A JP H01138024A JP 62295532 A JP62295532 A JP 62295532A JP 29553287 A JP29553287 A JP 29553287A JP H01138024 A JPH01138024 A JP H01138024A
- Authority
- JP
- Japan
- Prior art keywords
- capacitors
- electromagnetic
- worked
- workpiece
- electromagnetic coil
- 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
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〕
本発明は電磁力を利用して金属材料等を塑性加工する電
磁成形装置に係り、特に成形用の電磁コイルに供給され
る電気エネルギを制御することができる電磁成形装置に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electromagnetic forming device that plastically processes metal materials using electromagnetic force, and particularly to an electromagnetic forming device that controls electrical energy supplied to an electromagnetic coil for forming. The present invention relates to an electromagnetic forming apparatus capable of forming.
従来の電磁成形装置は、特開昭５５−８８９９８号公報
に開示されているように、商用交流電源を整流して直流
電源とし、該直流電源によってコンデンサを充電すると
ともに、コンデンサに充電された電気エネルギを瞬時に
成形用の電磁コイルに流すことにより、該電磁コイルと
被加工材との相互作用によって生じる電磁力で被加工材
を成形加工するようになっていた。As disclosed in Japanese Unexamined Patent Publication No. 55-88998, conventional electromagnetic forming equipment rectifies a commercial AC power source into a DC power source, charges a capacitor with the DC power source, and discharges the electricity charged in the capacitor. By instantaneously passing energy through a forming electromagnetic coil, the workpiece is formed using electromagnetic force generated by the interaction between the electromagnetic coil and the workpiece.
しかしながら、上記従来の装置ではコンデンサが１個で
あるため、コンデンサの充放電が単発的に行なわれる。However, since the above-mentioned conventional device has only one capacitor, charging and discharging of the capacitor is performed only one time.
すなわち−度放電したら最初から充電しなければならず
、その充電に時間がかかるので、連続加工する際にタク
トタイムが増大するという欠点があった。That is, once the battery has been discharged once, it must be charged from the beginning, and since charging takes time, there is a drawback that the takt time increases during continuous machining.
また、従来の装置は、電磁コイルで発生する電磁力の強
さを、被加工材の種類および加工度等に応じて、自由に
変化させることは難しかった。このため、被加工材が高
強度であったり、加工度が大きかったりすると、高電圧
大容量の電源を必要とし、装置自体が大型化するととも
に、高価になるという問題があった。Furthermore, with conventional devices, it has been difficult to freely change the strength of the electromagnetic force generated by the electromagnetic coil depending on the type of workpiece, degree of processing, etc. For this reason, if the workpiece material has high strength or the degree of processing is high, a high voltage, large capacity power source is required, and the apparatus itself becomes large and expensive.
本発明の目的は、充電に時間がかからず、かつ被加工材
の状況に応じて出力を自由に変えることができる電磁成
形装置を提供することである。An object of the present invention is to provide an electromagnetic forming apparatus that does not take much time to charge and can freely change its output depending on the condition of the workpiece.
上記目的を達成するために、本発明は、コンデンサに蓄
えられた電気エネルギを瞬時に電磁コイルに流して、該
電磁コイルと被加工材との間に生じる電磁力によって、
前記被加工材を成形加工する電磁成形装置において、前
記コンデンサを複数個並列に接続し、かつ該複数個のコ
ンデンサの個々にスイッチを直列に設けるとともに、該
スイッチの導通を制御するスイッチング手段を設けたこ
とを特徴とする。In order to achieve the above object, the present invention instantly causes electrical energy stored in a capacitor to flow through an electromagnetic coil, and uses the electromagnetic force generated between the electromagnetic coil and the workpiece to
In the electromagnetic forming apparatus for forming the workpiece, a plurality of the capacitors are connected in parallel, a switch is provided in series for each of the plurality of capacitors, and a switching means is provided for controlling conduction of the switch. It is characterized by:
上記構成によれば、スイッチング手段により全てのスイ
ッチを同時にオンにすると、複数個のコンデンサから電
磁コイルへ瞬時に大電流が流れ、大きな電磁力を得るこ
とができるため、高強度または加工度の大きな被加工材
を成形加工することができる。なお、オンされるスイッ
チの数を任意に変化させれば、それに応じた電磁力を容
易に得ることが可能である。According to the above configuration, when all the switches are turned on simultaneously by the switching means, a large current instantly flows from the multiple capacitors to the electromagnetic coil, and a large electromagnetic force can be obtained. A workpiece can be shaped. Note that by arbitrarily changing the number of switches that are turned on, it is possible to easily obtain an electromagnetic force corresponding to the number of switches that are turned on.
また、上記スイッチをオン・オフする位相をずらせると
、複数個のコンデンサのうち、ある１つのコンデンサに
放電させている間に、他のコンデンサを充電することが
でき、この操作を繰り返して行なえば、連続的に放電す
ることが可能となり、被加工材の連続加工を行なうこと
ができる。In addition, by shifting the on/off phase of the above switch, it is possible to charge one of the multiple capacitors while another capacitor is being discharged, and this operation can be repeated. For example, continuous discharge becomes possible, and the workpiece can be continuously machined.
以下に本発明の一実施例を図面に基づいて説明する。 An embodiment of the present invention will be described below based on the drawings.
第１図は本発明に係る電磁成形装置の電源回路図である
。図において、−次側が交流電源１につなげられたトラ
ンス２の二次側には整流器３が接続されている。整流器
３の出力側には４個のコンデンサ６ａ〜６ｄが並列に接
続され、これらのコンデンサ６ａ〜６ｄのプラス側には
それぞれダイオード４８〜４ｄが設けられている。また
コンデンサ６ａ〜６ｄと並列して電磁コイル７が配設さ
れ、コンデンサ６ａ〜６ｄと電磁コイル７との間はサイ
リスタ５８〜５ｄが設けられている。そして、サイリス
タ５８〜５ｄはコントローラ８によりターンオン・ター
ンオフされるようになっている。FIG. 1 is a power supply circuit diagram of an electromagnetic forming apparatus according to the present invention. In the figure, a rectifier 3 is connected to the secondary side of a transformer 2 whose negative side is connected to an AC power source 1. Four capacitors 6a to 6d are connected in parallel to the output side of the rectifier 3, and diodes 48 to 4d are provided on the positive sides of these capacitors 6a to 6d, respectively. Further, an electromagnetic coil 7 is arranged in parallel with the capacitors 6a to 6d, and thyristors 58 to 5d are provided between the capacitors 6a to 6d and the electromagnetic coil 7. The thyristors 58 to 5d are turned on and off by the controller 8.
なお、サイリスタ５ａ〜５ｄはスイッチｋ、コントロー
ラ８はスイッチング手段をそれぞれ構成している。Note that the thyristors 5a to 5d constitute a switch k, and the controller 8 constitutes a switching means.
次に本実施例の作用について説明する。Next, the operation of this embodiment will be explained.
まず、交流電源１の電圧を１−ランス２により所定の電
圧まで昇圧して、整流器３によって直流に整流する。次
に整流された直流出力によってダイオード４８〜４ｄを
充電する。そして、サイリスタ５８〜５ｄのゲートにコ
ントローラ８より正のパルス電流を流して順方向導通回
路を形成し、コイル７にコンデンサ６８〜６ｄに充電さ
れた電気気エネルギを放電する。この放電により、電磁
コイル７と被加工材との間に生じる電磁力によって被加
工材を成形する。また、放電直後にサイリスタ５８〜５
ｄの各ゲートにコントローラ８より負−４＝
のパルス電流を流してターンオフ状態にし、サイリスタ
５８〜５ｄに順方向阻止特性を持たせる。First, the voltage of the AC power supply 1 is boosted to a predetermined voltage by the 1-lance 2, and then rectified into DC by the rectifier 3. The rectified DC output then charges the diodes 48-4d. Then, a positive pulse current is passed from the controller 8 to the gates of the thyristors 58 to 5d to form a forward conduction circuit, and the electrical energy charged in the capacitors 68 to 6d is discharged to the coil 7. Due to this discharge, the workpiece is shaped by the electromagnetic force generated between the electromagnetic coil 7 and the workpiece. In addition, immediately after discharge, the thyristors 58 to 5
A pulse current of negative -4= is passed from the controller 8 to each gate of d to turn it off, thereby giving the thyristors 58 to 5d a forward blocking characteristic.
以上のようなコンデンサ６８〜６ｄの充放電を同時ある
いは順次行なうことによって電磁コイル７の出力エネル
ギを第２図（ａ）または（ｂ）のように調整することが
できる。By charging and discharging the capacitors 68 to 6d as described above simultaneously or sequentially, the output energy of the electromagnetic coil 7 can be adjusted as shown in FIG. 2(a) or (b).
同図（ａ）は、サイリスタ５ａ〜５ｄのターンオンを同
時に行ない、充電したコンデンサ６８〜６ｄを並列の状
態にして高出力の電気エネルギを放出させ、電磁コイル
７に大電流を流した場合を示している。このようにする
ことにより、被加工材が高強度であっても、また被加工
量が大きくても成形加工することが可能となる。Figure (a) shows the case where the thyristors 5a to 5d are turned on simultaneously, the charged capacitors 68 to 6d are connected in parallel, and high output electrical energy is released, causing a large current to flow through the electromagnetic coil 7. ing. By doing so, even if the workpiece has high strength or the amount of workpiece is large, it is possible to perform the molding process.
また、同図（ｂ）は、サイリスタ５ａ〜５ｄのターンオ
ンを順次行ない、充電したコンデンサ６ａ〜６ｄの電気
エネルギを電磁コイル７に順次放出する場合を示してい
る。なお、ダイオード４８〜４ｄは、サイリスタ５８〜
５ｄのうちの１つがターンオンされて、コンデンサ６ａ
〜６ｄのうちの対応するコンデンサの電気エネルギが放
出される時に、他のコンデンサからの逆電流が流れ込む
ことを阻止している。このように一定のタイムラグを設
けて、各コンデンサ６ａ〜６ｄを順次放電させることに
より、コンデンサ〜６ａ〜６ｄの充電時間を短縮するこ
とができる。Further, FIG. 5B shows a case where the thyristors 5a to 5d are turned on in sequence and the electrical energy of the charged capacitors 6a to 6d is sequentially released to the electromagnetic coil 7. Note that the diodes 48 to 4d are the thyristors 58 to 4d.
5d is turned on and capacitor 6a
When the electrical energy of the corresponding capacitor of ~6d is discharged, reverse current from other capacitors is prevented from flowing. By sequentially discharging the capacitors 6a to 6d with a certain time lag in this way, the charging time of the capacitors 6a to 6d can be shortened.
本実施例によれば、各コンデンサ６ａ〜６ｄが小容量で
あっても、これらのコンデンサ６８〜６ｄを同時に放電
させると、高出力が得られるので、小型の装置で大型装
置並の能力を持たせることができる。またコンデンサ６
８〜６ｄを順次放電させると、各コンデンサ６８〜６ｄ
の充電時間が被加工材の成形タクトタイムに影響しない
ので、タクトタイムを大幅に短縮できる。According to this embodiment, even if each of the capacitors 6a to 6d has a small capacity, high output can be obtained by discharging these capacitors 68 to 6d at the same time, so a small device can have the same capacity as a large device. can be set. Also capacitor 6
When 8~6d are discharged sequentially, each capacitor 68~6d
The charging time does not affect the molding takt time of the workpiece, so the takt time can be significantly reduced.
以上説明したように、本発明によれば、複数個のコンデ
ンサを並列に設けたので、これらのコンデンサの放電を
スイッチング手段に制御することにより、被加工材の状
況に応じた最適な成形を行なうことができる。As explained above, according to the present invention, since a plurality of capacitors are provided in parallel, the discharge of these capacitors is controlled by the switching means, thereby performing optimal forming according to the situation of the workpiece. be able to.
第１図は本発明に係る電磁成形装置に用いられる電源回
路図、第２図は成形用の電磁コイルに流れる電流波形を
示す模式図である。
１・・・交流電源、２・・・トランス、３・・・整流器
、４ａ〜４ｄ・・・ダイオード、５ａ〜５ｄ・・・サイ
リスタ、
６ａ〜６ｄ・・・コンデンサ、
７・・・電磁コイル、
８・・コントローラ。FIG. 1 is a power supply circuit diagram used in an electromagnetic molding apparatus according to the present invention, and FIG. 2 is a schematic diagram showing a current waveform flowing through a molding electromagnetic coil. DESCRIPTION OF SYMBOLS 1... AC power supply, 2... Transformer, 3... Rectifier, 4a-4d... Diode, 5a-5d... Thyristor, 6a-6d... Capacitor, 7... Electromagnetic coil, 8. Controller.
Claims (1)
イルに流して、該電磁コイルと被加工材との間に生じる
電磁力によって、前記被加工材を成形加工する電磁成形
装置において、前記コンデンサを複数個並列に接続し、
かつ該複数個のコンデンサの個々にスイッチを直列に設
けるとともに、該スイッチの導通を制御するスイッチン
グ手段を設けたことを特徴とする電磁成形装置。In an electromagnetic forming apparatus that instantaneously flows electric energy stored in a capacitor into an electromagnetic coil and forms the workpiece by electromagnetic force generated between the electromagnetic coil and the workpiece, a plurality of the capacitors are formed. connect in parallel,
An electromagnetic forming apparatus characterized in that a switch is provided in series with each of the plurality of capacitors, and a switching means for controlling conduction of the switch is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62295532A JPH01138024A (en) | 1987-11-24 | 1987-11-24 | electromagnetic forming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62295532A JPH01138024A (en) | 1987-11-24 | 1987-11-24 | electromagnetic forming equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01138024A true JPH01138024A (en) | 1989-05-30 |
Family
ID=17821849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62295532A Pending JPH01138024A (en) | 1987-11-24 | 1987-11-24 | electromagnetic forming equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01138024A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000507159A (en) * | 1995-12-20 | 2000-06-13 | パルサー・ウェルディング・リミテッド | Electromagnetic integration or coupling of metal objects |
| JP2017118302A (en) * | 2015-12-24 | 2017-06-29 | 株式会社パルス電子技術特機事業部 | Semiconductor switch for high voltage discharge and electromagnetic molding device with the same |
| CN107008798A (en) * | 2017-05-02 | 2017-08-04 | 三峡大学 | A kind of fast cooling board part electromagnetic drive forming method and device |
| CN107116128A (en) * | 2017-06-05 | 2017-09-01 | 三峡大学 | The plate electromagnetism hemmer and method of a kind of axial-radial electromagnetic force timesharing loading |
| CN108580642A (en) * | 2018-05-23 | 2018-09-28 | 华中科技大学 | A kind of the electromagnetism thermo shaping method and device of metal material |
| CN109967591A (en) * | 2019-03-18 | 2019-07-05 | 三峡大学 | A kind of device and method for realizing plate electro-magnetic forming radial thrust using axial constant magnetic field and inductive loop |
-
1987
- 1987-11-24 JP JP62295532A patent/JPH01138024A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000507159A (en) * | 1995-12-20 | 2000-06-13 | パルサー・ウェルディング・リミテッド | Electromagnetic integration or coupling of metal objects |
| JP2017118302A (en) * | 2015-12-24 | 2017-06-29 | 株式会社パルス電子技術特機事業部 | Semiconductor switch for high voltage discharge and electromagnetic molding device with the same |
| CN107008798A (en) * | 2017-05-02 | 2017-08-04 | 三峡大学 | A kind of fast cooling board part electromagnetic drive forming method and device |
| CN107116128A (en) * | 2017-06-05 | 2017-09-01 | 三峡大学 | The plate electromagnetism hemmer and method of a kind of axial-radial electromagnetic force timesharing loading |
| CN107116128B (en) * | 2017-06-05 | 2019-09-24 | 三峡大学 | A kind of the plate electromagnetism hemmer and method of axial direction-radial electromagnetic force timesharing load |
| CN108580642A (en) * | 2018-05-23 | 2018-09-28 | 华中科技大学 | A kind of the electromagnetism thermo shaping method and device of metal material |
| CN109967591A (en) * | 2019-03-18 | 2019-07-05 | 三峡大学 | A kind of device and method for realizing plate electro-magnetic forming radial thrust using axial constant magnetic field and inductive loop |
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