JPH0128658B2 - - Google Patents
Info
- Publication number
- JPH0128658B2 JPH0128658B2 JP16514884A JP16514884A JPH0128658B2 JP H0128658 B2 JPH0128658 B2 JP H0128658B2 JP 16514884 A JP16514884 A JP 16514884A JP 16514884 A JP16514884 A JP 16514884A JP H0128658 B2 JPH0128658 B2 JP H0128658B2
- Authority
- JP
- Japan
- Prior art keywords
- flange
- diameter
- die
- groove
- width
- 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
- 238000005096 rolling process Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、軸素材の一部にフランジ部を有する
軸物成形品を転造するためのクロスローリング用
ダイスの構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to the structure of a cross-rolling die for rolling a shaft molded product having a flange portion on a portion of the shaft material.
（従来技術）
クロスローリングは互いに相対移動するダイス
にそれぞれ隆起部を形成し、両ダイスによつて軸
素材を回転させつつ加圧する熱間転造によつて、
各部の軸径を変化させて軸物成形品を得るもので
ある。このダイスの隆起部によつて成形品の細径
部品を成形し、ダイスの溝部によつて成形品のフ
ランジ部等の径の大きい部分が成形されるもので
ある。(Prior art) Cross rolling is a hot rolling process in which ridges are formed on dies that move relative to each other, and both dies rotate and pressurize the shaft material.
A shaft molded product is obtained by changing the shaft diameter of each part. The raised portions of the die form small-diameter parts of the molded product, and the grooves of the die form large-diameter parts such as flange portions of the molded product.
しかして、上記クロスローリングでは軸物成形
品の各部の径の変化は確実かつ容易に加工できる
が、軸方向に凹凸のある形状の成形は困難であ
る。例えば、フランジ部の側面に軽量化のための
凹部の形成等を行う場合には、転造成形後に機械
加工によつて上記軸方向の凹凸を加工形成する必
要があるが、効率が悪いものである。そこで、こ
の凹部の形成をクロスローリング用ダイスで行う
技術が、特開昭51−50852号に開示されている。
この先行例では、ダイスの案内溝に沿つて成形品
と一緒に移動する補助ダイスを設け、この補助ダ
イスによつて軸端部を加圧して凹部を形成するも
のである。 However, although the above-mentioned cross rolling can reliably and easily change the diameter of each part of a shaft molded product, it is difficult to mold a shape with unevenness in the axial direction. For example, when forming a concave part on the side surface of a flange part to reduce weight, it is necessary to machine the unevenness in the axial direction after forming, but this is inefficient. be. Therefore, a technique for forming this recessed portion using a cross-rolling die is disclosed in Japanese Patent Application Laid-Open No. 51-50852.
In this prior example, an auxiliary die is provided that moves together with the molded product along a guide groove of the die, and the auxiliary die applies pressure to the shaft end to form a recess.
しかるに、上記先行例のように補助ダイスを用
いるものでは、軸端部以外の部分に対する凹部の
加工、例えばフランジ部の任意の一側面にリング
状の凹部を形成することはできず、加工性が限定
されるものである。 However, in the case of using an auxiliary die as in the previous example, it is not possible to form a recess in a portion other than the shaft end, for example, a ring-shaped recess can be formed on any one side of the flange, resulting in poor workability. Limited.
（発明の目的）
本発明は上記事情に鑑み、補助ダイスを用いる
ことなく、軸物成形品のフランジ部の側面にリン
グ状の凹部を、ダイスの溝部の形状によつて成形
可能としたクロスローリング用ダイスを提供する
ことを目的とするものである。(Object of the Invention) In view of the above-mentioned circumstances, the present invention has been developed for cross-rolling, in which a ring-shaped recess can be formed on the side surface of the flange part of a shaft product by the shape of the groove of the die, without using an auxiliary die. The purpose is to provide dice.
（発明の構成）
本発明のダイスは、成形品のフランジ部の最終
外径より大径でかつ最終幅より細幅の前段フラン
ジ部を成形する溝状の第１フランジ成形部と、該
第１フランジ成形部に連続して加工後方に、溝底
面が徐々に浅くなる斜面で漸次フランジ部を成形
品のフランジ径まで縮径するとともに、凹部形成
側の溝側面が完成フランジ幅となる溝幅にまで拡
大して、フランジ部を最終径および幅に成形する
とともに上記リング状の凹部を形成する第２フラ
ンジ成形部とを備えたことを特徴とするものであ
る。(Structure of the Invention) The die of the present invention includes a groove-shaped first flange forming portion for forming a front flange portion having a larger diameter than the final outer diameter of the flange portion of the molded product and narrower than the final width; Continuing to the flange forming part, after the processing, the groove bottom gradually becomes shallower on the slope to gradually reduce the diameter of the flange part to the flange diameter of the molded product, and the groove width on the side where the concave part is formed becomes the finished flange width. The second flange forming part is expanded to form the flange part to a final diameter and width, and forms the ring-shaped recessed part.
（発明の効果）
本発明によれば、第１フランジ成形部によつて
製品フランジ部より大径でかつ細い幅の前段フラ
ンジ部を形成し、これに続いて第２フランジ成形
部によつて、この前段フランジ部を成形品の径ま
で縮径し、外周部の素材をフランジ部の側面に、
その内周部にリング状の凹部を残すように移動さ
せることにより、補助ダイスのような別途の部材
を要することなく、そのダイス形状の変更によつ
て、フランジ部のいずれの側面に対してもリング
状の凹部を同時に成形することができ、加工性に
優れているものである。(Effects of the Invention) According to the present invention, the first flange forming part forms the front flange part having a larger diameter and narrower width than the product flange part, and then the second flange forming part forms the This front-stage flange is reduced in diameter to the diameter of the molded product, and the outer peripheral material is placed on the side of the flange.
By moving the die so as to leave a ring-shaped recess on its inner periphery, the shape of the die can be changed without requiring a separate member such as an auxiliary die. The ring-shaped recess can be molded at the same time, and has excellent workability.
（実施例）
以下、図面により本発明の実施例を説明する。
第１図は成形時のクロスローリング用ダイスを示
す全体側面図、第２図はクロスローリング用ダイ
スの平面図、第３図Ａ〜Ｇはそれぞれ第２図のＡ
−ＡないしＧ−Ｇ線に沿う断面形状と、その時点
における成形品の成形状態を併せて示す断面図、
第４図は第２図のＶ−Ｖ線に沿う断面図であり、
第５図はこれによつて成形された成形品の断面図
である。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
Fig. 1 is an overall side view showing the cross-rolling die during molding, Fig. 2 is a plan view of the cross-rolling die, and Figs. 3 A to G are A of Fig. 2, respectively.
- A cross-sectional view showing the cross-sectional shape along line A to G-G and the molded state of the molded product at that point,
FIG. 4 is a sectional view taken along line V-V in FIG. 2,
FIG. 5 is a sectional view of a molded product formed by this method.
クロスローリングは、一対のダイス１，１が相
対向して配置され、これを加熱した軸素材２に対
して相対的に加圧状態で移動させて転造成形する
ものである。（第１図参照）
上記ダイス１は第５図に示す成形品３を左右に
２個成形するためのものであつて、成形品３は小
径の軸部３ａの一部にフランジ部３ｂを有し、該
フランジ部３ｂの一側面の内周部にリング状の凹
部３ｃが形成される。 Cross rolling is a process in which a pair of dies 1, 1 are arranged facing each other, and are moved under pressure relative to a heated shaft material 2 for rolling forming. (See Fig. 1) The die 1 is for molding two molded products 3 on the left and right as shown in Fig. 5, and the molded product 3 has a flange portion 3b on a part of a small diameter shaft portion 3a. However, a ring-shaped recess 3c is formed at the inner peripheral portion of one side of the flange portion 3b.
ダイス１は第１ダイス部１Ａと第２ダイス部１
Ｂとを備え、両ダイス部１Ａ，１Ｂは成形品３の
小径の軸部３ａを成形する中央の第１の隆起部５
と、この第１の隆起部５の両側にフランジ部３ｂ
を成形する溝部６と、さらに両側の軸部３ａを形
成する第２の隆起部７，７とを有している。ま
た、第２ダイス部１Ｂに続いて、中央部および両
端部を切断するカツター部８，９とを備えてい
る。 The die 1 has a first die part 1A and a second die part 1.
B, and both die parts 1A and 1B have a first raised part 5 in the center that forms the small diameter shaft part 3a of the molded product 3.
and flange portions 3b on both sides of this first raised portion 5.
It has a groove portion 6 forming the shaft portion 3a, and second raised portions 7, 7 forming the shaft portions 3a on both sides. Further, following the second die part 1B, cutter parts 8 and 9 are provided for cutting the central part and both ends.
中央の第１の隆起部５は先端部がくさび状で両
側に斜面５ａが形成され（第３図Ａ参照）、軸素
材２の中央部を所定の長さだけ軸部３ａの径に成
形する（第３図Ｂ参照）。続いて、両側の第２の
隆起部７，７は先端部の外側に斜面７ａが形成さ
れ（第３図Ｃ参照）、軸素材２の両端部を軸部３
ａの径に成形する。 The central first raised portion 5 has a wedge-shaped tip and slopes 5a formed on both sides (see Fig. 3A), and the central portion of the shaft material 2 is formed by a predetermined length to have the diameter of the shaft portion 3a. (See Figure 3B). Subsequently, a slope 7a is formed on the outside of the tip of the second raised portions 7, 7 on both sides (see FIG. 3C), and both ends of the shaft material 2 are connected to the shaft portion 3.
Shape to a diameter of a.
第１ダイス部１Ａの溝部６ａはその深さH1お
よび幅W1が、第５図の成形品３のフランジ部３
ｂの軸部３ａからの突出高さH0より大きく、か
つその幅W0より狭く形成され、この部分の溝部
６ａで成形された前段フランジ部３b′（第３図Ｄ
参照）は、その径および幅が成形品３のフランジ
部３ｂの径より大きく幅が狭いものである。 The groove portion 6a of the first die portion 1A has a depth H 1 and a width W 1 of the flange portion 3 of the molded product 3 in FIG.
The front flange part 3b ' (Fig. 3D
) is larger in diameter and width than the diameter of the flange portion 3b of the molded product 3 and narrower in width.
そして、第２ダイス部１Ｂにおける溝部６ｂ
は、その底部が上記第１ダイス部１Ａの溝部６ａ
より徐々に浅くなるように斜面に形成され、これ
と同時に中央の第１の隆起部５側の幅が徐々に狭
くなつて、溝部６ｂの側壁が徐々に広くなつて幅
が拡大している（第３図Ｅ，Ｆ参照）。この第２
ダイス部１Ｂでは、第１ダイス部１Ａによる前段
フランジ部３b′が縮径され、この縮径による外周
部の素材が溝壁が広がつた側に移動し、このフラ
ンジ部３b′側面の外周部に環状に突部が形成さ
れ、これにより内周部にリング状の凹部３ｃが成
形されるものである。上記第２ダイス部１Ｂの溝
部６ｂによるフランジ部は最終的に成形品３のフ
ランジ部３ｂと同じ径W2＝W0と幅H2＝H0に成
形される。 Then, the groove portion 6b in the second die portion 1B
, the bottom of which is the groove 6a of the first die portion 1A.
The groove 6b is formed on a slope so that it gradually becomes shallower, and at the same time, the width on the side of the first raised part 5 in the center gradually becomes narrower, and the side wall of the groove part 6b gradually becomes wider, increasing the width ( (See Figure 3 E, F). This second
In the die part 1B, the diameter of the front flange part 3b' is reduced by the first die part 1A, and the material on the outer periphery due to this diameter reduction moves to the side where the groove wall is widened, and the outer periphery of the side surface of this flange part 3b' An annular protrusion is formed on the inner periphery, thereby forming a ring-shaped recess 3c on the inner circumference. The flange portion formed by the groove portion 6b of the second die portion 1B is finally formed to have the same diameter W 2 =W 0 and width H 2 =H 0 as the flange portion 3b of the molded product 3.
続いて、中央のカツター部８で２つの成形品３
に切断され（第３図Ｇ参照）、両側のカツター部
９，９で端部が切断されるものである。 Next, cut the two molded products 3 using the cutter part 8 in the center.
(see FIG. 3G), and the ends are cut by the cutter parts 9, 9 on both sides.
よつて、上記実施例によれば、フランジ部３ｂ
の一側面に凹部３ｃを備えた成形品３を、２つ同
時に得ることができる。 Therefore, according to the above embodiment, the flange portion 3b
Two molded products 3 each having a recess 3c on one side can be obtained at the same time.
なお、上記ダイス１では溝部６ｂの第１の隆起
部５側を拡大し、こちら側に凹部３ｃを形成する
ようにしているが、第２隆起部７側の溝壁を拡大
すればフランジ部３ｂの反対側面に凹部３ｃが形
成され、また、両側に凹部を形成することも可能
である。一方、この溝部６ｂの側壁を徐々に拡大
するようにしているが、第２ダイス部１Ｂとなつ
た位置で最終の溝幅W2までに拡大するようにし
てもよい。 In addition, in the die 1, the first protrusion 5 side of the groove 6b is enlarged to form the recess 3c on this side, but if the groove wall on the second protrusion 7 side is enlarged, the flange 3b A recess 3c is formed on the opposite side, and it is also possible to form recesses on both sides. On the other hand, although the side walls of the groove portion 6b are gradually expanded, they may be expanded to the final groove width W2 at the position where the second die portion 1B is formed.
さらに、上記実施例は基本的な単純形状の軸物
の成形について説明したが、成形品３の設計変更
に応じてダイスの形状も適宜設計変更されるもの
である。 Furthermore, although the above-mentioned embodiment describes the molding of a basic, simple-shaped shaft, the shape of the die can also be appropriately changed in accordance with changes in the design of the molded product 3.
第１図は本発明の一実施例におけるクロスロー
リング用ダイスによる成形状態を示す全体側面
図、第２図はクロスローリング用ダイスの平面
図、第３図Ａ〜Ｇはそれぞれ第２図のＡ−Ａない
しＧ−Ｇ線に沿う断面形状と、その時点における
成形品の成形状態を併せて示す断面図、第４図は
第２図のＶ−Ｖ線に沿う断面図、第５図は成形品
の断面図である。
１……ダイス、２……軸素材、１Ａ……第１ダ
イス部、１Ｂ……第２ダイス部、３……成形品、
３ａ……軸部、３ｂ……フランジ部、３ｃ……凹
部、３b′……前段フランジ部、５，７……隆起
部、６，６ａ，６ｂ……溝部。
FIG. 1 is an overall side view showing a forming state by a cross-rolling die in an embodiment of the present invention, FIG. 2 is a plan view of the cross-rolling die, and FIGS. 3A to 3G are A--A in FIG. A cross-sectional view showing the cross-sectional shape along line A to G-G and the molded state of the molded product at that point. Figure 4 is a cross-sectional view taken along line V-V in Figure 2. Figure 5 is a cross-sectional view of the molded product. FIG. 1...Dice, 2...Shaft material, 1A...First die part, 1B...Second die part, 3... Molded product,
3a...Shaft portion, 3b...Flange portion, 3c...Concave portion, 3b'...Previous flange portion, 5, 7...Protuberance, 6, 6a, 6b...Groove portion.
Claims (1)
るフランジ部を転造成形するクロスローリング用
ダイスであつて、成形品のフランジ部の最終外径
より大径でかつ最終幅より細幅の前段フランジ部
を成形する溝状の第１フランジ成形部と、該第１
フランジ成形部に連続して加工後方に溝状に配設
され、溝底面が徐々に浅くなる斜面に形成されて
漸次フランジ部を成形品のフランジ径まで縮径す
るとともに、凹部形成側の溝側面が完成フランジ
幅となる溝幅にまで拡大されて、フランジ部を最
終径および幅に成形するとともに上記リング状の
凹部を形成する第２フランジ成形部とを備えたこ
とを特徴とするクロスローリング用ダイス。1. A cross-rolling die for forming a flange part having a ring-shaped recess on the side surface on a part of the shaft material, which has a diameter larger than the final outer diameter of the flange part of the molded product and a width narrower than the final width. a groove-shaped first flange forming part forming a front flange part;
Continuing from the flange forming part, it is arranged in a groove shape at the rear of the processing, and the groove bottom is formed into a slope that gradually becomes shallower, gradually reducing the diameter of the flange part to the flange diameter of the molded product, and the groove side surface on the side where the concave part is formed. and a second flange forming part which is expanded to a groove width corresponding to the finished flange width, forms the flange part to the final diameter and width, and forms the ring-shaped recessed part. dice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16514884A JPS6142439A (en) | 1984-08-07 | 1984-08-07 | Die for cross rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16514884A JPS6142439A (en) | 1984-08-07 | 1984-08-07 | Die for cross rolling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6142439A JPS6142439A (en) | 1986-02-28 |
| JPH0128658B2 true JPH0128658B2 (en) | 1989-06-05 |
Family
ID=15806792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16514884A Granted JPS6142439A (en) | 1984-08-07 | 1984-08-07 | Die for cross rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6142439A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861978B (en) * | 2014-03-28 | 2015-07-29 | 苏州京机锻造装备科技有限公司 | There is the cross wedge rolling machine that function sent into automatically by workpiece |
| CN103861979B (en) * | 2014-03-28 | 2015-09-09 | 苏州京机锻造装备科技有限公司 | There is the cross wedge rolling machine of the function that to center to rolling workpiece |
-
1984
- 1984-08-07 JP JP16514884A patent/JPS6142439A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6142439A (en) | 1986-02-28 |
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