JPS6355772B2 - - Google Patents
Info
- Publication number
- JPS6355772B2 JPS6355772B2 JP17477381A JP17477381A JPS6355772B2 JP S6355772 B2 JPS6355772 B2 JP S6355772B2 JP 17477381 A JP17477381 A JP 17477381A JP 17477381 A JP17477381 A JP 17477381A JP S6355772 B2 JPS6355772 B2 JP S6355772B2
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- metal rod
- header
- small diameter
- manufacturing
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 239000000696 magnetic material Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnets (AREA)
Description
【発明の詳細な説明】
本発明は例えばブレーカーの引外し用に使用す
る電磁石のプランジヤー製造法に関するものであ
り、その目的とするところは大量生産を可能とす
ると共に、材料損失の少ないプランジヤー製造法
を提供するにある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a plunger for an electromagnet used, for example, for tripping a breaker, and its purpose is to provide a method for manufacturing a plunger that enables mass production and reduces material loss. is to provide.
ブレーカーの電磁石は第１図乃至第２図に示す
如く、磁性材よりなるコ状の上部ヨーク１と取付
部２ａを具備する下部ヨーク２とを組み合せて、
そのヨーク１，２中に装着する非磁性材よりなる
筒体３にプランジヤー４を嵌合し、筒体３の一方
開口部に固定鉄心５を装着してある。プランジヤ
ー４はコイルばね６によつて固定鉄心５より開離
する方向に付勢され、コイル７が前記上部ヨーク
１と筒体３間に装着されて、過電流によつてコイ
ル７が励磁されるとき、プランジヤー４を固定鉄
心５方向に吸引してプランジヤー４の先端係合部
４ａに係合するブレーカーの引き外し機構を動作
させるようにしてある。 As shown in FIGS. 1 and 2, the breaker electromagnet is made by combining a U-shaped upper yoke 1 made of magnetic material and a lower yoke 2 equipped with a mounting portion 2a.
A plunger 4 is fitted into a cylinder 3 made of a non-magnetic material which is fitted into the yokes 1 and 2, and a fixed iron core 5 is fitted to one opening of the cylinder 3. The plunger 4 is urged in the direction of separation from the fixed iron core 5 by the coil spring 6, and the coil 7 is installed between the upper yoke 1 and the cylinder 3, and the coil 7 is excited by the overcurrent. At this time, the plunger 4 is attracted in the direction of the fixed iron core 5 to operate a breaker tripping mechanism that engages with the tip engaging portion 4a of the plunger 4.
従来かゝる電磁石のプランジヤーの製造は、第
３図の如く、プランジヤーの外径Ｄに相当する大
きさの外径をもつ磁性材料よりなる金属棒Ａより
旋盤加工を用いて、大径部A1とその両側に小径
部A2，A3をもつプランジヤー本体と、そのプラ
ンジヤー本体の一端より突出する小径軸部A4と
その小径軸部A4の端部に係合部４ａを切削形成
するものである。 Conventionally, such an electromagnetic plunger is manufactured by lathe-machining a metal rod A made of a magnetic material and having an outer diameter corresponding to the outer diameter D of the plunger, as shown in Fig. 3. 1 and a plunger body having small diameter portions A 2 and A 3 on both sides thereof, a small diameter shaft portion A 4 protruding from one end of the plunger body, and an engaging portion 4a formed by cutting at the end of the small diameter shaft portion A 4 . It is something.
したがつて能率の悪い切削加工であるので大量
生産に適さないと共に、金属棒Ａはプランジヤー
の最大外径のものを用意しなければならないの
で、高価であり、しかも切削屑が多く材料損失が
大きい欠点がある。 Therefore, since it is an inefficient cutting process, it is not suitable for mass production, and since the metal rod A must have the maximum outer diameter of the plunger, it is expensive, and there is a lot of cutting waste, resulting in large material loss. There are drawbacks.
本発明はかゝる事由に鑑みてなされたものであ
る。以下実施例として掲げた第４図乃至第６図を
参照して本発明電磁石のプランジヤー製造法を説
明すると、第４図において、磁性材料よりなる小
径の金属棒A′を所要寸法に押し出しあるいは切
断して設定する切断工程と、該金属棒A′の一
方側に中間部を大径部A1とし、その両側を小径
部A2，A3とするプランジヤー本体を形成するヘ
ツダー加工工程と、金属棒A′の他方端部に負
荷との係合部４ａを形成する曲げ加工工程とよ
りなる電磁石のプランジヤー製造法とするもので
ある。 The present invention has been made in view of the above circumstances. The method for manufacturing the electromagnet plunger of the present invention will be explained below with reference to FIGS. 4 to 6 shown as examples. In FIG. 4, a small-diameter metal rod A' made of magnetic material is extruded or cut into required dimensions a header processing step of forming a plunger body on one side of the metal rod A′ with a large diameter portion A 1 at the middle portion and small diameter portions A 2 and A 3 on both sides; This method of manufacturing an electromagnetic plunger includes a bending step of forming a load engaging portion 4a at the other end of the rod A'.
前記曲げ加工工程におけるプランジヤーの係合
部４ａの形成は、引外し機構の係合具等負荷の形
状に応じて必要とする形状に形成するものであ
り、例えば第５図ａの如く折返し形成するとか、
あるいは引掛け強度を得るため第５図ｂの如く密
着形成される。 The engaging portion 4a of the plunger in the bending process is formed into a required shape depending on the shape of the load such as the engaging tool of the tripping mechanism, and is formed by folding, for example, as shown in FIG. 5a. And,
Alternatively, in order to obtain hooking strength, they are formed in close contact as shown in FIG. 5b.
第６図ａ，ｂは断面角形の金属棒を用いてプラ
ンジヤーを形成したものであり、断面形状を変え
ることもまた任意である。 FIGS. 6a and 6b show a plunger formed using a metal rod with a square cross section, and the cross-sectional shape can also be changed arbitrarily.
本発明によるプランジヤーの製造では、金属棒
A′の外径はヘツダー加工を行つた後の軸部A4の
外径かあるいはそれよりも大きい外径のものであ
り、ヘツダー加工機械によつてヘツダー加工工程
（）の直前に大径部、小径部を打ち出すために
ヘツダー部へ押し出され必要な長さに切断（）
で切断されるかあるいは別工程で切断されて所定
寸法に設定されヘツダー部に運ばれる。次でヘツ
ダー加工によつて大径部A1、小径部A2，A3が形
成されるが、この大径部A1、小径部A2，A3は軸
部A4の外径に対して階段状に形成されるがゆえ
にヘツダー加工が容易であり、正確に形成し得る
ことゝなる。 In the production of the plunger according to the invention, a metal rod
The outer diameter of A′ is the outer diameter of shaft portion A4 after header processing or a larger outer diameter. , to punch out the small diameter part, it is pushed out to the header part and cut to the required length ()
The material is then cut in a separate process or cut to a predetermined size, and then transported to the header section. Next, the large diameter portion A 1 , small diameter portions A 2 , and A 3 are formed by header processing, but the large diameter portion A 1 , small diameter portions A 2 , and A 3 are relative to the outer diameter of the shaft portion A 4 . Since the header is formed in a step-like shape, it is easy to process the header and it can be formed accurately.
このヘツダー加工の終了後にプランジヤーは第
４図の形状となり、次で曲げ工程で所要形状に係
合部４ａが形成されるものである。 After the header processing is completed, the plunger assumes the shape shown in FIG. 4, and the engaging portion 4a is then formed into the desired shape in a bending process.
この曲げ加工工程（）は前記ヘツダー加工機
械に組み込んだ曲げ加工手段によつても、また別
工程として設けてもよい。この別工程は複雑な係
合部形状をもつプランジヤーに適用し得る。 This bending step () may be performed by a bending means built into the header processing machine, or may be provided as a separate step. This separate process can be applied to plungers with complex engagement portion shapes.
上述するように本発明によれば、従来の如く旋
盤による切削加工を行うものではなく、ヘツダー
加工によるものであるから、加工に要する時間が
短かくてよく、切削加工の如き材料屑が発生せ
ず、したがつてプランジヤーの価格を低減させる
ものである。 As described above, according to the present invention, since cutting is not performed using a lathe as in the past, but header processing is performed, the time required for processing is short and material waste is not generated as in cutting processing. Therefore, the price of the plunger is reduced.
第１図はブレーカーの断面図、第２図は電磁石
の分解斜視図、第３図は従来のプランジヤー製造
法を示す工程図、第４図は本発明プランジヤー製
造法を示す工程図、第５図ａ，ｂは係合部の異な
る実施例を示す図、第６図ａ，ｂはプランジヤー
の異なる実施例を示す図である。
A1……大径部、A2，A3……小径部、A4……軸
部、４ａ……曲げ部。
Fig. 1 is a sectional view of the breaker, Fig. 2 is an exploded perspective view of the electromagnet, Fig. 3 is a process diagram showing the conventional plunger manufacturing method, Fig. 4 is a process diagram showing the plunger manufacturing method of the present invention, and Fig. 5 FIGS. 6a and 6b are views showing different embodiments of the engaging portion, and FIGS. 6a and 6b are views showing different embodiments of the plunger. A1 ...Large diameter part, A2 , A3 ...Small diameter part, A4 ...Shaft part, 4a...Bent part.
Claims (1)
る切断工程と、該金属棒の一方側に中間部を大径
部とし、その大径部の両側を小径部とするプラン
ジヤー本体を形成するヘツダー加工工程と、金属
棒の他方端部に負荷との係合部を形成する曲げ加
工工程とよりなる電磁石のプランジヤー製造法。1. A cutting process for setting a metal rod made of magnetic material to the required dimensions, and a header process for forming a plunger body on one side of the metal rod with a large diameter section at the middle and small diameter sections on both sides of the large diameter section. A method for manufacturing an electromagnetic plunger, which comprises a step and a bending step of forming a load engaging portion at the other end of a metal rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17477381A JPS5875808A (en) | 1981-10-30 | 1981-10-30 | Manufacture of plunger of electromagnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17477381A JPS5875808A (en) | 1981-10-30 | 1981-10-30 | Manufacture of plunger of electromagnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5875808A JPS5875808A (en) | 1983-05-07 |
| JPS6355772B2 true JPS6355772B2 (en) | 1988-11-04 |
Family
ID=15984412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17477381A Granted JPS5875808A (en) | 1981-10-30 | 1981-10-30 | Manufacture of plunger of electromagnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5875808A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3160145B2 (en) * | 1994-03-03 | 2001-04-23 | 新日本製鐵株式会社 | Anchor structure using perforated steel plate |
-
1981
- 1981-10-30 JP JP17477381A patent/JPS5875808A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5875808A (en) | 1983-05-07 |
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