JPH0549378B2 - - Google Patents
Info
- Publication number
- JPH0549378B2 JPH0549378B2 JP61075955A JP7595586A JPH0549378B2 JP H0549378 B2 JPH0549378 B2 JP H0549378B2 JP 61075955 A JP61075955 A JP 61075955A JP 7595586 A JP7595586 A JP 7595586A JP H0549378 B2 JPH0549378 B2 JP H0549378B2
- Authority
- JP
- Japan
- Prior art keywords
- die
- rolling
- forming
- dies
- shaft portion
- 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
- 238000005096 rolling process Methods 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 16
- 238000000465 moulding Methods 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims description 4
- 238000003672 processing method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 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
-
- 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
- B21H1/22—Making articles shaped as bodies of revolution characterised by use of rolls having circumferentially varying profile ; Die-rolling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、ローラダイスまたは平ダイスを用
いた転造加工方法に関し、さらに詳しくは一部に
偏心軸部をもつクランク軸状の軸非対称部品の転
造加工方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rolling method using a roller die or a flat die, and more specifically to rolling of an asymmetric crankshaft-like component having a partially eccentric shaft portion. Regarding manufacturing methods.
従来の技術
例えば段付軸等を転造加工する方法として、ロ
ーラダイスを用いる方法と、平板状のいわゆる平
ダイスを用いる方法とが広く知られている。ロー
ラダイスを用いる方法はクロスローリング法とよ
ばれるもので、同一方向に回転する２個あるいは
３個のローラダイス間で円柱状の素材を挾圧成形
して所要の段付軸形状に成形するものである。ま
た平ダイスを用いる方法は、互いに逆向きに平行
移動する一対の平ダイス間で素材を挾圧成形する
もので、クロスローリング法にいうローラダイス
を平板状に展開したものと理解することができ
る。BACKGROUND ART For example, as a method for rolling a stepped shaft or the like, a method using a roller die and a method using a so-called flat die are widely known. The method using roller dies is called the cross-rolling method, in which a cylindrical material is compressed and pressed between two or three roller dies rotating in the same direction to form the desired stepped shaft shape. It is. In addition, the method using flat dies involves pressing and forming the material between a pair of flat dies that move in parallel in opposite directions, and can be understood as a flat-plate version of the roller die used in the cross-rolling method. .
発明が解決しようとする問題点
上記のような従来の転造加工方法は、軸心を対
称軸としたときに回転対称な部品、すなわち軸対
称部品の成形のみを目的としており、いわゆる軸
非対称部品の成形には適用することができないも
のである。Problems to be Solved by the Invention The conventional rolling method described above is aimed only at forming parts that are rotationally symmetrical when the axis is the axis of symmetry, that is, axially symmetrical parts. It cannot be applied to molding.
このため、例えば第４図および第５図に示すよ
うに一部に偏心軸部Ｅをもつクランク軸状の軸非
対称部品Ｐを成形するにあたつては、一旦軸対称
形状に転造加工したのちに別にプレスによる曲げ
加工や型鍛造を施して最終製品形状に仕上げる必
要があり、工数の増加を招いている。 For this reason, for example, when forming an axisymmetric part P in the shape of a crankshaft that partially has an eccentric shaft portion E as shown in FIGS. 4 and 5, it is necessary to first roll it into an axisymmetric shape. Later, it is necessary to separately perform bending using a press and die forging to form the final product shape, which increases the number of man-hours.
問題点を解決するための手段
本発明は軸非対称部品の転造を可能とした方法
を提供するものであり、相対移動するロール状ま
たは平板状の複数のダイス間でそのダイス間距離
を一定にしたままで素材を挾圧しつつ転動させて
成形する転造加工方法において、前記複数のダイ
スの成形面に、素材の転動方向に沿つて複数の窪
みと断面山形状の複数の***部とを交互に有し
て、且つその窪みが相手側のダイスの***部に、
***部が相手側のダイスの窪みにそれぞれ対向す
るように配列された偏心成形部を形成し、前記素
材が連続転動する転造進行過程で該素材の特定箇
所を前記***部に順次合致させて相手側のダイス
の窪み側に偏心させることにより、一部に偏心軸
部をもつ軸非対称部品を成形することを特徴とし
ている。Means for Solving the Problems The present invention provides a method that makes it possible to roll an axially asymmetrical part, in which the distance between a plurality of roll-shaped or flat-shaped dies that move relatively is kept constant. In a rolling method in which the material is rolled while being held and pressed, the forming surfaces of the plurality of dies are provided with a plurality of depressions and a plurality of protuberances having a mountain-shaped cross section along the rolling direction of the material. alternately, and the depressions are in the raised part of the opponent die,
Forming eccentrically formed parts in which the raised parts are arranged so as to respectively face the recesses of the mating die, and in the rolling process in which the raw material continuously rolls, specific parts of the material are sequentially aligned with the raised parts. By making the die eccentric to the concave side of the mating die, an axially asymmetrical part having a partially eccentric shaft portion is formed.
また***部については、転造進行方向に沿つ
て、素材一回転の転動距離をピツチとして複数存
在するものであるが、転造末期に向かうほどその
***部の高さが順次大きくなるように設定する。 Regarding the raised parts, there are multiple raised parts along the rolling progress direction with pitches corresponding to the rolling distance of one rotation of the material, but the height of the raised parts gradually increases toward the end of rolling. Set.
実施例
第１図、第２図は本発明の第１の実施例を示す
図であり、第４図および第５図に示すように偏心
軸部Ｅをもつ軸非対称部品Ｐを成形する場合につ
いて例示している。Embodiment FIGS. 1 and 2 are diagrams showing a first embodiment of the present invention, in which an axially asymmetrical part P having an eccentric shaft portion E is molded as shown in FIGS. 4 and 5. Illustrated.
一対のローラダイス１，２はともにほぼ同形状
をなしており、図示しない駆動手段により同方向
に回転駆動される。第３図Ａは一方のローラダイ
ス例えばローラダイス１を展開した図であり、ま
た第３図Ｂは同図Ａの−線に沿う断面図であ
る。ローラダイス１の成形面１ａには、軸非対称
部品Ｐの小径軸部S1を成形するための噛み込み導
入部３ａをもつ一対の軸成形部３，３と、これら
一対の軸成形部３，３の中間に位置して、軸非対
称部品Ｐの大径軸部すなわち偏心軸部Ｅを成形す
るための偏心成形部４とが形成されている。偏心
成形部４は、噛み込み導入部３ａから遠ざかるに
したがつてその深さが順次大きくなる複数の窪み
５，６，７と、同様に噛み込み導入部３ａから遠
ざかるにしたがつてその頂部高さが順次大きくな
る断面山形状の複数の***部８，９，１０とをダ
イス１の回転方向（素材の転動方向）に沿つて交
互に形成したものである。以上のことは他方のロ
ーラダイス２についても同様である。 The pair of roller dies 1 and 2 have substantially the same shape and are driven to rotate in the same direction by a driving means (not shown). 3A is an exploded view of one of the roller dies, for example roller die 1, and FIG. 3B is a sectional view taken along the - line in FIG. 3A. The forming surface 1a of the roller die 1 includes a pair of shaft forming parts 3, 3 having a biting introduction part 3a for forming the small diameter shaft part S1 of the axially asymmetrical part P; 3, an eccentric molding section 4 for molding a large-diameter shaft section of the axially asymmetrical component P, that is, an eccentric shaft section E is formed. The eccentrically molded part 4 has a plurality of depressions 5, 6, and 7 whose depths gradually increase as they move away from the biting introduction part 3a, and the top height of the depressions increases as they move away from the biting introduction part 3a. A plurality of raised portions 8, 9, and 10 each having a mountain-shaped cross section whose height increases successively are formed alternately along the rotational direction of the die 1 (the rolling direction of the material). The above also applies to the other roller die 2.
第３図Ｃは同図Ｂのａ〜ｄの各断面での素材Ｗ
の形状について示しており、また第３図Ｄは同図
Ｃの各側面について示している。第３図Ｂ，Ｃか
ら明らかなように、ａ−ａ断面からｂ−ｂ断面に
移行する過程で直径d0の円柱状の素材Ｗの転造が
開始され、素材Ｗの両端部が軸成形部３，３によ
り小径軸部S1として直径d1に絞られる。この段階
では素材Ｗは軸対称形状であつて、しかも偏心軸
部Ｅとなる大径軸部S2の直径d0は従前のままであ
る。 Figure 3C shows the material W at each cross section from a to d in Figure B.
Fig. 3D shows each side of Fig. 3C. As is clear from Figures B and C, rolling of the cylindrical material W with a diameter d 0 begins in the process of transitioning from the a-a cross section to the b-b cross section, and both ends of the material W are axially formed. It is narrowed to a diameter d 1 by the portions 3 and 3 as a small diameter shaft portion S 1 . At this stage, the material W has an axially symmetrical shape, and the diameter d 0 of the large-diameter shaft portion S 2 that becomes the eccentric shaft portion E remains the same as before.
さらに、ｂ−ｂ断面からｃ−ｃ断面を経てｄ−
ｄ断面に至る過程では、軸成形部３，３での勾配
がなくなる故に小径軸部S1の直径d1は変化しな
い。同様に大径軸部S2についてもその直径d0は変
化しないものの、断面山形状の***部８，９，１
０のはたらきにより大径軸部S2は徐々に偏心せし
められる。 Furthermore, from the bb section to the cc section, d-
In the process of reaching the d cross section, the diameter d 1 of the small diameter shaft portion S 1 does not change because the slope at the shaft forming portions 3, 3 disappears. Similarly, although the diameter d 0 of the large-diameter shaft portion S 2 does not change, the raised portions 8, 9, 1 with a mountain-shaped cross section
0, the large diameter shaft portion S2 is gradually eccentric.
すなわち第１図にも示すように、一方側のロー
ラダイス１の***部８，９，１０および他方側の
ローラダイス２の***部１１，１２，１３のピツ
チはそれぞれ大径軸部S2（偏心軸部Ｅ）の１回転
の転動距離（円周）とほぼ等しくなるように予め
設定されており、しかも一方側の***部８，９，
１０のいずれかと他方側の***部１１，１２，１
３のいずれかとが同時に素材Ｗに接することのな
いように、***部８，９，１０と１１，１２，１
３とは素材Ｗの半回転程度その位置関係を予めず
らして設定してある。 That is, as shown in FIG. 1, the pitches of the raised portions 8, 9, and 10 of the roller die 1 on one side and the raised portions 11, 12, and 13 of the roller die 2 on the other side are respectively larger than the large diameter shaft portion S2 ( It is set in advance to be approximately equal to the rolling distance (circumference) of one rotation of the eccentric shaft portion E), and the raised portions 8, 9 on one side are
10 and the raised portions 11, 12, 1 on the other side
The raised parts 8, 9, 10 and 11, 12, 1
3 is set such that the positional relationship is shifted in advance by about half a rotation of the material W.
したがつて例えば一方側のローラダイス１の隆
起部９を例にとると、この***部９に対しては他
方側のローラダイス２の窪み１５が対応すること
になり、大径軸部S2は***部９のうちの上がり勾
配の斜面９ａを転動する過程で小径軸部S1に対し
て徐々に偏心せしめられ、***部９の頂部９ｂで
その偏心量が最大となる。これらの関係は他の隆
起部８，１０および１１，１２，１３についても
同様であり、最終的には偏心せしめられた大径軸
部S2が偏心軸部Ｅとなつて第４図および第５図に
示すような軸非対称部品Ｐが成形される。 Therefore, for example, if we take the raised portion 9 of the roller die 1 on one side as an example, the recess 15 of the roller die 2 on the other side corresponds to this raised portion 9, and the large diameter shaft portion S 2 In the process of rolling on the upwardly sloped slope 9a of the raised portion 9, the shaft gradually becomes eccentric with respect to the small diameter shaft portion S1 , and the amount of eccentricity reaches its maximum at the top 9b of the raised portion 9. These relationships are the same for the other raised parts 8, 10 and 11, 12, 13, and finally the eccentric large diameter shaft part S2 becomes the eccentric shaft part E, as shown in FIGS. An axially asymmetrical part P as shown in FIG. 5 is molded.
第６図は本発明の第２の実施例を示すもので、
第７図および第８図に示すように偏心軸部Ｅとそ
の両端の軸部S3とが同径の軸非対称部品Ｐを成形
する場合について示している。本実施例の場合、
素材Ｗの直径d0がそのまま最終成形品の直径とな
るために素材Ｗの両端部を絞る必要がなく、した
がつて、ローラダイス１，２は第３図Ａでの軸成
形部３，３を備えていない。それ以外の点につい
ては第１実施例と基本的に同一である。 FIG. 6 shows a second embodiment of the present invention,
As shown in FIGS. 7 and 8, a case is shown in which an axially asymmetrical component P is molded in which the eccentric shaft portion E and the shaft portions S3 at both ends thereof have the same diameter. In the case of this example,
Since the diameter d 0 of the material W becomes the diameter of the final molded product, there is no need to squeeze both ends of the material W. Therefore, the roller dies 1 and 2 are used as the shaft forming parts 3 and 3 in FIG. 3A. Not equipped with Other points are basically the same as the first embodiment.
第９図Ａ，Ｂは本発明の第３の実施例を示すも
ので、本実施例においては先のローラダイス１，
２に代えて平ダイス２１，２２を用いたものであ
り、転造過程の詳細については第１および第２の
実施例と同様である。 9A and 9B show a third embodiment of the present invention. In this embodiment, the roller die 1,
In this embodiment, flat dies 21 and 22 are used instead of 2, and the details of the rolling process are the same as those in the first and second embodiments.
発明の効果
以上のように本発明によれば、軸非対称部品を
転造のみによつて成形できることから、従来では
軸非対称部品の成形に際して必須とされた転造後
の曲げ加工や型鍛造が不要となり、工数の削減が
図れるほか、ダイスだけ交換すれば既存の転造設
備でそのまま加工できる効果がある。Effects of the Invention As described above, according to the present invention, since an axially asymmetrical part can be formed only by rolling, there is no need for bending or die forging after rolling, which were conventionally required when forming an axially asymmetrical part. This not only reduces the number of man-hours, but it also has the effect of allowing existing rolling equipment to be used as is by simply replacing the die.
第１図は本発明の一実施例を示す図で第２図の
要部を展開拡大した図、第２図はローラダイスを
用いた転造法の説明図、第３図Ａ，Ｂ，Ｃ，Ｄは
ローラダイスと素材の形状変化との関係を示す説
明図、第４図は軸非対称部品の説明図、第５図は
第４図の右側面図、第６図Ａ，Ｂ，Ｃ，Ｄは本発
明の他の実施例として、ローラダイスと素材の形
状変化との関係を示す説明図、第７図は軸非対称
部品の他の例を示す説明図、第８図は第７図の右
側面図、第９図Ａ，Ｂは本発明のさらに他の実施
例を示す説明図である。
１，２……ローラダイス、１ａ……成形面、４
……偏心成形部、５，６，７……窪み、８，９，
１０……***部、１１，１２，１３……窪み、１
４，１５，１６……***部、２１，２２……平ダ
イス、Ｗ……素材、Ｐ……軸非対称部品、Ｅ……
偏心軸部。
Fig. 1 is a diagram showing an embodiment of the present invention, and is an expanded enlarged view of the main part of Fig. 2, Fig. 2 is an explanatory diagram of a rolling method using a roller die, and Fig. 3 is A, B, and C. , D is an explanatory diagram showing the relationship between the roller die and the shape change of the material, Fig. 4 is an explanatory diagram of the axis asymmetric component, Fig. 5 is a right side view of Fig. 4, Fig. 6 A, B, C, D is an explanatory diagram showing the relationship between the roller die and the shape change of the material as another embodiment of the present invention, FIG. 7 is an explanatory diagram showing another example of the axis asymmetric component, and FIG. The right side view and FIGS. 9A and 9B are explanatory diagrams showing still another embodiment of the present invention. 1, 2... Roller die, 1a... Molding surface, 4
... Eccentric molded part, 5, 6, 7 ... Hollow, 8, 9,
10... Protuberance, 11, 12, 13... Hollow, 1
4, 15, 16...Protuberance, 21, 22...Flat die, W...Material, P...Axis asymmetrical part, E...
Eccentric shaft.
Claims (1)
ダイス間でそのダイス間距離を一定にしたままで
素材を挾圧しつつ転動させて成形する転造加工方
法において、 前記複数のダイスの成形面に、素材の転動方向
に沿つて複数の窪みと断面山形状の複数の***部
とを交互に有して、且つその窪みが相手側のダイ
スの***部に、***部が相手側のダイスの窪みに
それぞれ対向するように配列された偏心成形部を
形成し、 前記素材が連続転動する転造進行過程で該素材
の特定箇所を前記***部に順次合致させて相手側
のダイスの窪み側に偏心させることにより、一部
に偏心軸部をもつ軸非対称部品を成形することを
特徴とする転造加工方法。[Scope of Claims] 1. A rolling method in which a material is rolled and formed while being clamped and pressed between a plurality of roll-shaped or flat plate-shaped dies that move relatively while keeping the distance between the dies constant, comprising: The molding surface of the die has a plurality of depressions and a plurality of protrusions having a mountain-shaped cross section alternately along the rolling direction of the material, and the depressions form a protrusion on the protrusion of the opposing die. forming eccentrically formed parts arranged so as to face the recesses of the mating die, and in the rolling process in which the material continuously rolls, specific parts of the material are sequentially aligned with the raised parts to form the mating die. A rolling processing method characterized by forming an axis asymmetric part having a partially eccentric shaft portion by eccentrically moving the side die toward the concave side.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7595586A JPS62234631A (en) | 1986-04-02 | 1986-04-02 | Form rolling method |
| US07/032,109 US4811585A (en) | 1986-04-02 | 1987-03-30 | Device for forming asymmetrical articles by rolling |
| GB8707910A GB2188573B (en) | 1986-04-02 | 1987-04-02 | Method of and device for forming asymmetrical articles by rolling |
| KR1019870003129A KR900008284B1 (en) | 1986-04-02 | 1987-04-02 | Device for forming asymmetrical articles by rolling |
| DE19873711034 DE3711034A1 (en) | 1986-04-02 | 1987-04-02 | METHOD AND DEVICE FOR TRAINING AN ASYMMETRIC BODY BY MEANS OF A ROLLING PROCESS |
| US07/512,591 US5060497A (en) | 1986-04-02 | 1990-04-24 | Method of forming asymmetrical articles by rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7595586A JPS62234631A (en) | 1986-04-02 | 1986-04-02 | Form rolling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62234631A JPS62234631A (en) | 1987-10-14 |
| JPH0549378B2 true JPH0549378B2 (en) | 1993-07-26 |
Family
ID=13591154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7595586A Granted JPS62234631A (en) | 1986-04-02 | 1986-04-02 | Form rolling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62234631A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61126939A (en) * | 1984-11-22 | 1986-06-14 | Mitsubishi Heavy Ind Ltd | Manufacture of stepped shaft-like product |
-
1986
- 1986-04-02 JP JP7595586A patent/JPS62234631A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61126939A (en) * | 1984-11-22 | 1986-06-14 | Mitsubishi Heavy Ind Ltd | Manufacture of stepped shaft-like product |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62234631A (en) | 1987-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3285927B2 (en) | Manufacturing method of split bearing ring | |
| US4811585A (en) | Device for forming asymmetrical articles by rolling | |
| JPS61129241A (en) | Production of pulley | |
| JP4350300B2 (en) | Shift gear wheel manufacturing method, apparatus for performing the method, and shift gear wheel manufactured by the method | |
| JPH0518662B2 (en) | ||
| JPH0549378B2 (en) | ||
| JP3331499B2 (en) | Bush processing method | |
| JPH0438915Y2 (en) | ||
| JPH0549377B2 (en) | ||
| RU2339467C1 (en) | Method of step-by-step rolling | |
| JPH0459980B2 (en) | ||
| JPH0459981B2 (en) | ||
| JPH0366977B2 (en) | ||
| JPH0126762B2 (en) | ||
| SU1227300A1 (en) | Tool for making tooth profiles | |
| JPS61126939A (en) | Manufacture of stepped shaft-like product | |
| JPH0459056B2 (en) | ||
| SU742021A1 (en) | Method of producing asymmetrical articles having elongated axis | |
| JP2645787B2 (en) | Circumferential groove forming method | |
| JP3809090B2 (en) | Pre-stress device for combination mill | |
| JPH06198351A (en) | Method for coining | |
| GB2045133A (en) | Thread rolling dies | |
| SU956113A1 (en) | Tool for cross-wedge rolling | |
| RU2042450C1 (en) | Method of making non-symmetrical double curvature surfaces | |
| JPH0327705Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| EXPY | Cancellation because of completion of term |