JPS61279333A - Formation of hollow spherical article - Google Patents
Formation of hollow spherical articleInfo
- Publication number
- JPS61279333A JPS61279333A JP12231385A JP12231385A JPS61279333A JP S61279333 A JPS61279333 A JP S61279333A JP 12231385 A JP12231385 A JP 12231385A JP 12231385 A JP12231385 A JP 12231385A JP S61279333 A JPS61279333 A JP S61279333A
- Authority
- JP
- Japan
- Prior art keywords
- hollow
- hollow spherical
- spherical body
- forging
- base material
- 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
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、中空球形物品を管状素材から回転鍛造によっ
て成形する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for forming a hollow spherical article from a tubular material by rotary forging.
（ロ）従来技術
中空球形物品は、高圧容器、機械継手等に用いられてい
る。従来、この種の物品を製造するには。(b) Prior Art Hollow spherical articles are used in high-pressure containers, mechanical joints, and the like. Conventionally, to manufacture this type of article.
ブロック状素材を工作機械によって削り出して成形して
いた。この成形力法は歩留が非常に悪く。It was formed by cutting out block-shaped materials using machine tools. This forming force method has a very poor yield.
メタル−フローが連続的でなくなるので強度が低く、切
削に時間がかかる。Metal flow is not continuous, so strength is low and cutting takes time.
そこで、第２図に示すように円板状ビレット素材ｆ、後
方押出し加工によってカップ状成形体１にし、＠６図に
示すように、プレス加工によってカップ状成形体１の端
部に口絞り加工を施して中空球形体２をつくっている。Therefore, as shown in Fig. 2, the disc-shaped billet material f is made into a cup-shaped molded body 1 by backward extrusion processing, and as shown in Fig. The hollow spherical body 2 is made by applying the following steps.
このようにして得られた成品は強度が高く、歩留よく高
能率に生産することができる利点を有している。The product thus obtained has the advantage of having high strength and being able to be produced with high yield and high efficiency.
しかし、後方押出し加工においては、型・プレスの歪に
よりパンチ１１と受型１２との中心軸がずれやすく、ま
た、材料セット位置ずれ、材料焼むらなどのためにカッ
プ状成形体１に偏肉が発生する（第２図）。また、プレ
ス加工のさいに１口絞り部分に座屈が発生しやすく（第
６図）、薄肉成品の成形は不可能である。However, in backward extrusion processing, the center axes of the punch 11 and the receiving die 12 tend to shift due to distortion of the die/press, and the thickness of the cup-shaped molded body 1 is uneven due to misalignment of the material set position, uneven heating of the material, etc. occurs (Figure 2). Furthermore, during press working, buckling is likely to occur in the single draw area (Fig. 6), making it impossible to form thin-walled products.
（ハ）発明が解決しようとする問題点
本発明が解決しようとする問題点け、成形過程中に材料
の偏肉や座屈を発生させずに歩留よく高能率に中空球形
物品を成形する方法を得ることにある。(c) Problems to be solved by the invention Problems to be solved by the invention: A method for molding hollow spherical articles with high yield and high efficiency without causing uneven thickness or buckling of the material during the molding process. It's about getting.
（／９問題点を解決するための手段
本発明の中空球形物品の成形力法は、管状素材の一端を
回転鍛造によって中空半球形体に加工すること、該中空
半球体の残りの管状部分を回転鍛造によって中空半球形
体に加工し全体として中空球形体に成形すること、該中
空球形体の両端開口部分を機械加工によって中空球形物
品に仕上げること、前記管状素材の外径（ｄ）対中空球
形物品の外径ＣＤ）の比（ｄ／Ｄ）ｅＯ６６〜１に設定
することによって５上記問題点を解決している。(/9 Means for Solving Problems The forming force method for hollow spherical articles of the present invention involves processing one end of a tubular material into a hollow hemispherical body by rotary forging, and rotating the remaining tubular portion of the hollow hemisphere. Processing into a hollow hemispherical body by forging and shaping the entire body into a hollow spherical body; Machining the opening portions at both ends of the hollow spherical body into a hollow spherical article; and the outer diameter (d) of the tubular material versus the hollow spherical article. The above-mentioned problems are solved by setting the ratio (d/D) eO of the outer diameter CD to 66 to 1.
（ホ）実 施 例
第１図（Ａ）から（Ｄ）までを参照して、本発明の中空
球形物品の成形方法について説明する。(E) Example A method for molding a hollow spherical article of the present invention will be described with reference to FIGS. 1(A) to (D).
本発明の方法は管状素材３ （（Ａ）図）を出発材料と
する。管状素材６の外径ｔｄとする。The method of the present invention uses a tubular material 3 (Figure (A)) as a starting material. Let the outer diameter of the tubular material 6 be td.
第１図（Ａ）に示すように、管状素材６けまず第１回転
鍛造機４の上型４１と下型４２との間に設置される。図
示するように、上型４１の中心軸Ａけ下型４２の中心軸
Ｂに関して角度θ、だけ傾斜した状態で、上型４１け中
心軸Ａまわりに回転し、下型４２は中心軸Ｂのまわ！７
に回転し、下型４２は管状素材３の下端を保持しながら
、上型４１け中心軸ＢＥそって下降する。As shown in FIG. 1(A), a tubular material 6 is disposed between an upper mold 41 and a lower mold 42 of the first rotary forging machine 4. As shown in FIG. As shown in the figure, the upper mold 41 rotates around the central axis A with the central axis A of the upper mold 41 tilted by an angle θ with respect to the central axis B of the lower mold 42, and the lower mold 42 rotates around the central axis B of the lower mold 42. Wow! 7
Then, the lower die 42 moves down along the center axis BE of the upper die 41 while holding the lower end of the tubular material 3.
この円錐運動により管状素材６の上開口端に口絞り加工
が施される。このようにして、第１図（Ｂ）に示すよう
に、中空半球形体５が成形される。This conical movement causes the upper open end of the tubular material 6 to be drawn. In this way, the hollow hemispherical body 5 is formed as shown in FIG. 1(B).
次いで、中空半球形体５がＷＪ１図（Ｃ）に示すように
第２回転鍛造機６の上型６１と下型６２との間に設置さ
れる。図示するように、上型６１の中心輸入は下型６２
の中心軸Ｂに関して角度θ２ だけ傾斜した状態で上型
６１け中心軸Ａまわシに回転し下型６２は中心軸Ｂのま
わりに回転し上下運動をする。下型６２は中空半球形体
５の半球部分５２に係合し、上型６１は中空半球形体５
の管状部分５１に係合する。Next, the hollow hemispherical body 5 is installed between the upper mold 61 and the lower mold 62 of the second rotary forging machine 6, as shown in FIG. 1C. As shown in the figure, the main import of the upper mold 61 is the lower mold 62.
The upper mold 61 rotates around the central axis A while being tilted by an angle θ2 with respect to the central axis B, and the lower mold 62 rotates around the central axis B and moves up and down. The lower mold 62 engages the hemispherical portion 52 of the hollow hemispherical body 5, and the upper mold 61 engages the hemispherical portion 52 of the hollow hemispherical body 5.
the tubular portion 51 of.
この回転および上下運動により管状部分５１を中空半球
形体に加工し、第１図（ＤＪに示すように、全体として
中空球形体７を成形する。By this rotation and vertical movement, the tubular portion 51 is processed into a hollow hemispherical body, and as shown in FIG. 1 (DJ), the hollow spherical body 7 is formed as a whole.
最後に、中空球形体７け使用目的に応じてロ絞シ部分７
１．７２等に必要な機械加工が施されて仕上げられる（
嘉４図）。このようにして、中空球形物品８がつくられ
る。Finally, the hollow spherical body 7 is inserted into the hollow spherical body 7 according to the purpose of use.
1.72 etc. is finished with the necessary machining (
Figure 4). In this way, a hollow spherical article 8 is produced.
中空球形物品８０寸法の一列を第４図に示す。A series of hollow spherical articles 80 dimensions is shown in FIG.
物品８の外径ＴｈＤ、肉厚をｔ、上部口の内径をＥ９．
下部口の内径をＥ２ とする。The outer diameter of the article 8 is ThD, the wall thickness is t, and the inner diameter of the upper opening is E9.
Let the inner diameter of the lower opening be E2.
本発明の方法においては、管状素材５の外径ｄ対中空球
形物品の外径りの比ｄ／Ｄ を０．６〜１に設定する。In the method of the present invention, the ratio d/D of the outer diameter d of the tubular material 5 to the outer diameter of the hollow spherical article is set to 0.6 to 1.
このように限定した理由は５次のとおりである。管状素
材の中央部外径ｄけ、回転鍛造成形により増加するので
、製品径りより小さくなければならない（ｄ／Ｄ≦１）
。−力、素材径ｄを小さくすると、製品径りまで中央部
の径が増加しなくなるので、ｄ／Ｄ＞０．６とする必要
がある。The reasons for this limitation are as follows. The outer diameter of the central part of the tubular material d increases due to rotary forging, so it must be smaller than the product diameter (d/D≦1)
. - If the force and the material diameter d are reduced, the diameter at the center will not increase to the product diameter, so it is necessary to set d/D>0.6.
（へ）効 果
本発明によれば、管状素材を用いるので、成形過程中に
材料の偏肉や座屈が発生せず、また、回転鍛造工程によ
り素材を大部分成形加工するので。(F) Effects According to the present invention, since a tubular material is used, uneven thickness or buckling of the material does not occur during the forming process, and most of the material is formed by a rotary forging process.
歩留が大幅に向上し、メタル・フローが連続化して強度
が一段と向上し、加工時間が短縮し、難加工材料につい
ても成形可能となるなどの効果が得られる。The yield is significantly improved, the metal flow becomes continuous, the strength is further improved, processing time is shortened, and even difficult-to-process materials can be formed.
可１図（ＡＪから（Ｄ）までけ本発明の方法の工程を示
す説明図。第２図および第６図は従来法の工程の一部を
示す説明図。等４図は本発明の方法によってつくられた
成品の一列の縦断面図。
３：管状素材
５：中空半球形体
７：中空球形体
８：中空球形物品。
特許出願人住友金属工業来式会社
（外５名）
図
一一ノ
―Figure 1 (from AJ to (D) is an explanatory diagram showing the steps of the method of the present invention. Figures 2 and 6 are explanatory diagrams showing part of the steps of the conventional method. Figure 4 is an explanatory diagram showing the steps of the method of the present invention. 3: Tubular material 5: Hollow hemispherical body 7: Hollow spherical body 8: Hollow spherical article. Patent applicant Sumitomo Metal Industries, Ltd. (5 others) ―
Claims (1)
すること、該中空半球体の残りの管状部分を回転鍛造に
よって中空半球形体に加工し全体として中空球形体に成
形すること、該中空球形体の両端開口部分を機械加工に
よって中空球形物品に仕上げること、前記管状素材の外
径（ｄ）対中空球形物品の外径（Ｄ）の比（ｄ／Ｄ）を
０．６〜１に設定することからなる中空球形物品の成形
方法。Processing one end of the tubular material into a hollow hemispherical body by rotary forging, processing the remaining tubular portion of the hollow hemispherical body into a hollow hemispherical body by rotary forging and forming the whole into a hollow spherical body, and forming the hollow spherical body as a whole. The opening portions at both ends are finished into a hollow spherical article by machining, and the ratio (d/D) of the outer diameter (d) of the tubular material to the outer diameter (D) of the hollow spherical article is set to 0.6 to 1. A method for forming a hollow spherical article consisting of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12231385A JPS61279333A (en) | 1985-06-05 | 1985-06-05 | Formation of hollow spherical article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12231385A JPS61279333A (en) | 1985-06-05 | 1985-06-05 | Formation of hollow spherical article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61279333A true JPS61279333A (en) | 1986-12-10 |
Family
ID=14832859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12231385A Pending JPS61279333A (en) | 1985-06-05 | 1985-06-05 | Formation of hollow spherical article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61279333A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029350A (en) * | 2010-12-17 | 2011-04-27 | 重庆大学 | Progressive forging forming method for large cake forged pieces |
-
1985
- 1985-06-05 JP JP12231385A patent/JPS61279333A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029350A (en) * | 2010-12-17 | 2011-04-27 | 重庆大学 | Progressive forging forming method for large cake forged pieces |
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