JPH0360570B2 - - Google Patents
Info
- Publication number
- JPH0360570B2 JPH0360570B2 JP56115061A JP11506181A JPH0360570B2 JP H0360570 B2 JPH0360570 B2 JP H0360570B2 JP 56115061 A JP56115061 A JP 56115061A JP 11506181 A JP11506181 A JP 11506181A JP H0360570 B2 JPH0360570 B2 JP H0360570B2
- Authority
- JP
- Japan
- Prior art keywords
- punch
- back punch
- magnetron anode
- manufacturing
- shape
- 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 - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 208000035859 Drug effect increased Diseases 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K23/00—Making other articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
本発明は、マグネトロンアノードの製造方法、
特に銅円筒の内周に複数枚の銅ベインを放射状に
有するマグネトロンアノードのプレス成形法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for manufacturing a magnetron anode,
In particular, the present invention relates to a press molding method for a magnetron anode having a plurality of copper vanes radially arranged around the inner periphery of a copper cylinder.
このようなアノードを製造する方法として、す
でに第１図に示すようなプレス加工法が開発さ
れ、生産に適用されている。この図において、１
０は円板状の素材を示し、１１は予備加工を施さ
れた一次加工品を示し、１２はプレス加工を施し
た結果得られた二次加工品を示し、そして１３は
旋削加工を経て得られる完成品（マグネトロン陽
極）を示している。この加工法において、第２工
程後の底肉Ａ部は後加工時に削除されるため、こ
の底肉を薄く成形するほど素材体積を減少でき、
量産時の製造原価を低減することができる。しか
し、底肉Ａが薄く（A′の厚さが、銅壁の厚さの
２倍より小さく）なると、第２図に示すように、
ポンチ１下での外周方向流れが強まつてＢのよう
なひけ（ｌ：ひけの長さ）が発生する。このひけ
は、銅円筒の下部の材料が全く動かずにバツクポ
ンチ３に接触している銅の底面が外周方向へ動い
て銅円筒の中へ入り込んでゆく結果発生するもの
であり、ときには、外面まで連してマグネトロン
の真空劣化の原因ともなる。なお、図において、
２はダイス、３はバツクポンチを示す。 As a method for manufacturing such anodes, a press working method as shown in FIG. 1 has already been developed and is being applied to production. In this figure, 1
0 indicates a disk-shaped material, 11 indicates a primary processed product that has been subjected to preliminary processing, 12 indicates a secondary processed product obtained as a result of press processing, and 13 indicates a product obtained through turning processing. The finished product (magnetron anode) is shown. In this processing method, the bottom wall A after the second step is removed during post-processing, so the thinner the bottom wall is formed, the more the material volume can be reduced.
Manufacturing costs during mass production can be reduced. However, when the bottom wall A becomes thin (the thickness of A' is less than twice the thickness of the copper wall), as shown in Figure 2,
The flow in the outer circumferential direction under the punch 1 becomes stronger, and a sink mark (l: length of the sink mark) as shown in B occurs. This sink mark occurs as a result of the material at the bottom of the copper cylinder not moving at all, and the bottom surface of the copper that is in contact with the back punch 3 moving toward the outer circumference and entering the copper cylinder. This also causes vacuum deterioration of the magnetron. In addition, in the figure,
2 indicates a die and 3 indicates a back punch.
本発明は、上記の点に着目してなされたもので
あり、このようなひけの防止法を確立して、底肉
の薄いアノードの量産を可能にするマグネトロン
アノードの製造方法を提供することを目的とする
ものである。 The present invention has been made with attention to the above points, and aims to provide a method for manufacturing a magnetron anode that establishes a method for preventing such sink marks and enables mass production of anodes with a thin bottom wall. This is the purpose.
上記の目的を達成するために、本発明では、バ
ツクポンチの上面に凹凸を設けて、第２図に示し
た外周方向への材料流れを抑制することを特徴と
する。 In order to achieve the above object, the present invention is characterized in that the upper surface of the back punch is provided with unevenness to suppress material flow in the outer circumferential direction shown in FIG.
このような外周方向への材料流れの抑制方法と
して、例えば特開昭48−34763に開示されている
ように、バツクポンチ上面に多数条の溝をつけ
る、又は、バツクポンチの上面全体を20〜40Sに
荒らすことによつても可能であつた。しかしその
場合には、抑制効果が強すぎて銅ブランクが外周
方向へほとんど流れず、第３図に示すように銅ベ
インの盛り上りが大きくなつて、形状の劣化する
傾向が見られた。また、40S程度の凹凸は、量産
加工中に摩滅して流れの抑制効果が次第に変化す
ることも考えられた。 As a method of suppressing material flow in the outer circumferential direction, for example, as disclosed in Japanese Patent Application Laid-Open No. 48-34763, many grooves are formed on the top surface of the back punch, or the entire top surface of the back punch is made to have a diameter of 20 to 40S. This was also possible by vandalizing it. However, in that case, the suppressing effect was so strong that the copper blank hardly flowed toward the outer periphery, and as shown in FIG. 3, the bulge of the copper vane became larger and the shape tended to deteriorate. It was also thought that the unevenness of about 40S would wear out during mass production and the flow suppression effect would gradually change.
これらの点を考慮して、本発明では適度な抑制
効果を持ち、しかも量産中に摩滅しないようなバ
ツクポンチ形状を提供する。すなわち、凹凸を設
ける範囲を、２／３×Db（Db：バツクポンチ直径、
第３図参照）により外周に限り、凹凸も、摩滅し
ないような形状・寸法に構成するものである。 Taking these points into consideration, the present invention provides a back punch shape that has an appropriate suppressing effect and does not wear out during mass production. That is, the area in which the unevenness is provided is limited to the outer periphery by 2/3×D b (D b : back punch diameter, see FIG. 3), and the unevenness is configured in a shape and size that will not wear out.
以下、本発明を実施例を参照して詳細に説明す
る。 Hereinafter, the present invention will be explained in detail with reference to Examples.
第３図のポンチ１に一例として直径Dp＝38.5
mm、ダイス２に一例として内径Dd＝43mm、バツ
クポンチ３に第４図イ〜ニのようなもの（一例と
してDb＝37mm）を使用して、マグネトロンアノ
ード（一例としてベイン枚数12枚のもの）をプレ
ス成形した。第４図イ〜ニを用いて得られた加工
品のひけの長さｌの測定結果を、第５図に示す。
第５図中イ〜ニは、それぞれ第４図のイ〜ニに示
されるバツクポンチ３を用いて得られた結果に相
当する。 As an example, the diameter D p = 38.5 for punch 1 in Figure 3.
mm, the die 2 has an inner diameter D d = 43 mm, the back punch 3 uses something like the one shown in Figure 4 A to D (an example is D b = 37 mm), and a magnetron anode (an example with 12 vanes) is used. ) was press-molded. FIG. 5 shows the measurement results of the sink mark length l of the processed product obtained using FIGS. 4A to 4D.
5 corresponds to the results obtained using the back punch 3 shown in FIG. 4, A to D, respectively.
上面に全く凹凸のない第４図イに示す形のバツ
クポンチを使用した場合、底肉A′の厚さ（底厚
ｔ）が４mm以下になるとひけが発生・成長した。
これに対して、外周に凹凸を設けた場合（第４図
ロ〜ニでは、底厚が２mm以下になるまでひけは発
生せず、ひけの抑制効果のあることが明らかとな
つた。ロ〜ニの間では、抑制効果にあまり大きな
差はないが、ニが最も効果的といえる。なお、ベ
インの盛り上りは、イよりロ〜ニの方が強かつた
が、ポンチの溝底４にベイン上端を当てることに
よつて、十分に形状修正できることがわかつた。
バツクポンチの上面全体を40Sにした場合には、
ベイン上端を溝底に当てても、加工力が過大とな
つて十分に修正できなかつたことを考慮すれば、
第４図に示したバツクポンチ形状は、ひけの防止
とベイン形状の改善との両面に役立つことがわか
る。なお、本例で示した凹凸の高さは0.3〜0.5mm
であり、量産中に摩滅するおそれの少ない寸法で
ある。 When a back punch of the shape shown in Figure 4A, which has no irregularities on the top surface, was used, sink marks occurred and grew when the thickness of the bottom wall A' (bottom thickness t) was less than 4 mm.
On the other hand, when unevenness is provided on the outer periphery (Fig. 4 B to D), sink marks do not occur until the bottom thickness becomes 2 mm or less, and it is clear that there is an effect of suppressing sink marks. There is not much difference in the suppressing effect between 2, but 2 can be said to be the most effective.Also, the rise of the vane was stronger in RO to N than in A, but it was It was found that the shape could be sufficiently modified by applying the upper end of the vane.
If the entire top surface of the back punch is 40S,
Considering that even if the upper end of the vane was applied to the bottom of the groove, the machining force was excessive and the correction could not be made sufficiently.
It can be seen that the back punch shape shown in FIG. 4 is useful for both prevention of sink marks and improvement of the vane shape. The height of the unevenness shown in this example is 0.3 to 0.5 mm.
The dimensions are such that there is little risk of wear during mass production.
ただし、ハのバツクポンチでは、上面に突起が
出ているため、底厚を２mm以下にするとポンチが
局部的に変形し、ポンチの寿命が損われるものと
思われた。ポンチ寿命を損わないためには、バツ
クポンチ上面より突き出るような凹凸形状は好ま
しくなく、ロ又はニのように凹みをつける方が好
適である。 However, since Ha's back punch has a protrusion on the top surface, it was thought that if the bottom thickness was less than 2 mm, the punch would be locally deformed and the life of the punch would be shortened. In order not to impair the life of the punch, it is not preferable to have an uneven shape that protrudes from the upper surface of the back punch, and it is more preferable to form a concave shape as in the case of (b) or (d).
なお、第４図に示した凹凸の例では、いずれも
30mmより外周に凹凸を設けてある。しかし、本発
明ではこれに限らず、実用的にはφ25mm（直径Db
の2/3）から外側でも適用可能であつた。例えば、
第４図ロのバツクポンチに更にもう一条、φ25mm
の位置に溝を追加した結果、ひけの長さは第５図
のハに近づき、抑制効果が増すことがわかつた。
この傾向は上記実施例で示したバツクポンチの形
状における具体的寸法に限らず、一般的には、実
用性を考慮すると、バツクポンチの直径Dbの2/3
から外側でも適用可能であることがわかつた。 In addition, in the example of unevenness shown in Fig. 4, both
The outer periphery is uneven from 30mm. However, the present invention is not limited to this, and in practical use φ25 mm (diameter D b
It was also possible to apply it outside from 2/3). for example,
One more thread on the back punch shown in Figure 4, φ25mm.
As a result of adding a groove at the position, the length of the sink mark approached C in Figure 5, and it was found that the suppressing effect increased.
This tendency is not limited to the specific dimensions of the shape of the back punch shown in the above example, but in general, considering practicality, 2/3 of the back punch diameter D b
It was found that it can be applied outside as well.
以上に説明したごとく、本発明によれば、バツ
クポンチ上面の外周部に凹凸を設けることによつ
て、底肉を薄くしてもひけを防止でき、しかもベ
イン形状も良好に成形できることがわかる。これ
によつて、量産時の素材体積を約10％低減でき、
実用上の効果は極めて大きいものである。 As explained above, according to the present invention, by providing unevenness on the outer periphery of the upper surface of the back punch, sink marks can be prevented even if the bottom wall is made thin, and the vane shape can also be formed well. As a result, the material volume during mass production can be reduced by approximately 10%.
The practical effects are extremely large.
第１図は、マグネトロンアノードのプレス加工
工程を示す図、第２図は、アノードの成形中に生
ずるひけＢの発生機構の説明図、第３図はバツク
ポンチ全面を20〜40S程度に荒した場合の材料流
れを示す説明図、第４図イ〜ニはそれぞれ本発明
の一実施例に使用したバツクポンチの形状例を示
す図、第５図は実施列で測定されたひけの長さｌ
の測定結果を示す図である。
図において、１はポンチ、２はダイス、３はバ
ツクポンチ。
Fig. 1 is a diagram showing the press working process of a magnetron anode, Fig. 2 is an explanatory diagram of the generation mechanism of sink mark B that occurs during anode molding, and Fig. 3 is a diagram showing the case where the entire surface of the back punch is roughened to about 20 to 40 S. 4A to 4D are diagrams each showing an example of the shape of the back punch used in an embodiment of the present invention, and FIG. 5 is an explanatory diagram showing the material flow of
FIG. 3 is a diagram showing measurement results. In the figure, 1 is a punch, 2 is a die, and 3 is a back punch.
Claims (1)
材の円筒部内側に、ポンチとバツクポンチで薄肉
の放射状アノードベインを一体に配列してなるマ
グネトロンアノードのプレス成形工程において、
使用する該バツクポンチの上面に、直径の2/3よ
り外周部分に材料の流れを抑制する構造を設けた
ことを特徴とするマグネトロンアノードの製造方
法。 ２ 上記材料の流れを抑制する構造として、円周
状に溝を設け、ひけを防止することを特徴とする
特許請求の範囲第１項記載のマグネトロンアノー
ドの製造方法。 ３ 上記溝として、凹凸であることを特徴とする
特許請求の範囲第２項記載のマグネトロンアノー
ドの製造方法。[Claims] 1. In the press-forming process of a magnetron anode in which thin radial anode vanes are integrally arranged inside the cylindrical part of a magnetron anode member having an H-shaped cross-section using a punch and a back punch,
A method for manufacturing a magnetron anode, characterized in that the upper surface of the back punch used is provided with a structure that suppresses the flow of material from 2/3 of the diameter to the outer circumference. 2. The method for manufacturing a magnetron anode according to claim 1, wherein a groove is provided circumferentially as a structure for suppressing the flow of the material to prevent sink marks. 3. The method for manufacturing a magnetron anode according to claim 2, wherein the groove is uneven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11506181A JPS5816752A (en) | 1981-07-24 | 1981-07-24 | Manufacture of magnetron anode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11506181A JPS5816752A (en) | 1981-07-24 | 1981-07-24 | Manufacture of magnetron anode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5816752A JPS5816752A (en) | 1983-01-31 |
| JPH0360570B2 true JPH0360570B2 (en) | 1991-09-17 |
Family
ID=14653199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11506181A Granted JPS5816752A (en) | 1981-07-24 | 1981-07-24 | Manufacture of magnetron anode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5816752A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0790318B2 (en) * | 1987-04-30 | 1995-10-04 | 石川島播磨重工業株式会社 | Width reduction press mold |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5429465A (en) * | 1977-07-06 | 1979-03-05 | Hitachi Ltd | Swing stop apparatus for rope suspension crane |
-
1981
- 1981-07-24 JP JP11506181A patent/JPS5816752A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5429465A (en) * | 1977-07-06 | 1979-03-05 | Hitachi Ltd | Swing stop apparatus for rope suspension crane |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5816752A (en) | 1983-01-31 |
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