JP3290098B2 - Boss forming method of disk-shaped material - Google Patents
Boss forming method of disk-shaped materialInfo
- Publication number
- JP3290098B2 JP3290098B2 JP13765797A JP13765797A JP3290098B2 JP 3290098 B2 JP3290098 B2 JP 3290098B2 JP 13765797 A JP13765797 A JP 13765797A JP 13765797 A JP13765797 A JP 13765797A JP 3290098 B2 JP3290098 B2 JP 3290098B2
- Authority
- JP
- Japan
- Prior art keywords
- boss
- disk
- shaped material
- mandrel
- forming method
- 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 - Fee Related
Links
Landscapes
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は円板状素材からその
一面に同心円状のボス部を押し出し成形する方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for extruding a concentric boss from one side of a disk-shaped material.
【０００２】[0002]
【従来の技術】上記ボス部の押し出し成形方法として
は、例えば図６及び図７に示す方法がある。この方法
は、予め適宜手段にて所定の外径と内径とを有する円板
状素材Ｗを形成し、これを回転円板５０の支軸５１に嵌
挿して取付け、該素材Ｗの所定箇所ｐをしごき加工によ
り中心部に押し出し、押し出された部分を所定高さのボ
ス部Ｓとして成形品Ｄを得るようにしたものである。５
２は支軸５１に対向して取付けられる心押し台を示し、
その外径は形成すべきボス部Ｓの外径と略々等しい外径
とする。2. Description of the Related Art As a method for extruding a boss, there is, for example, a method shown in FIGS. In this method, a disk-shaped material W having a predetermined outer diameter and an inner diameter is formed in advance by appropriate means, and this is inserted and attached to a spindle 51 of a rotating disk 50, and a predetermined position Is extruded toward the center by ironing, and the extruded portion is used as a boss S having a predetermined height to obtain a molded product D. 5
Reference numeral 2 denotes a tailstock that is attached to the support shaft 51,
The outer diameter is set to be substantially equal to the outer diameter of the boss S to be formed.
【０００３】[0003]
【発明が解決しようとする課題】しかしこの方法による
ときは、ボス部Ｓのメタルフローは乱れ、強度に問題が
ある。本発明はかゝる点に鑑み、メタルフローを損なう
ことなく、強度を有するボス部の成形を行うことを目的
とする。However, according to this method, the metal flow of the boss S is disturbed, and there is a problem in strength. In view of the above, an object of the present invention is to form a boss having strength without impairing a metal flow.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
の本発明の円板状素材のボス出し成形方法は、所定外径
と内径とを有する円板状素材に対し、円筒状ボス部を形
成すべき箇所を絞り加工により所定型さの截頭円錐形に
形成し、ついで該円錐形の傾斜面を略々直角となる様、
絞り加工を施し同心円状に所定長さのボス部を突出成形
することを特徴とする。According to the present invention, there is provided a method for forming a boss of a disk-shaped material, wherein a cylindrical boss is formed on a disk-shaped material having a predetermined outer diameter and an inner diameter. A portion to be formed is formed into a frusto-conical shape of a predetermined shape by drawing, and then the inclined surface of the conical shape is substantially at a right angle,
It is characterized in that a boss portion having a predetermined length is protruded and formed concentrically by drawing.
【０００５】上記方法によるときは、ボス部は２工程に
分けての絞り加工により形成される故、メタルフローを
損なうことがない。According to the above method, the boss portion is formed by drawing in two steps, so that the metal flow is not impaired.
【０００６】[0006]
【発明の実施の形態】以下本発明を図１乃至図５に示す
実施例に基づいて説明する。本発明の円板状素材のボス
出し成形方法はスピニングマシンを利用して２工程に分
けて行うもので、第１工程としてスピニングマシン１に
は、まず回転主軸２に第１マンドレル３を取付け、この
マンドレル３に被加工物Ｗを取付け、回転可能の心押台
４により押圧挟持し、絞りロール５をマンドレル３に沿
って被加工物Ｗを絞り加工を行う。ただし、６は絞りロ
ール５を取付けるターレット台、７は該ターレット台を
載置する走行台、８は走行台７を軸方向に進退させる駆
動ねじ、９はターレット台６をこれと直角方向に進退さ
せる駆動軸を示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in FIGS. The method of forming a boss of a disc-shaped material according to the present invention is performed in two steps using a spinning machine. As a first step, a first mandrel 3 is attached to a rotating spindle 2 in a spinning machine 1. The workpiece W is attached to the mandrel 3, pressed and held by a rotatable tailstock 4, and the drawing roll 5 is drawn along the mandrel 3 to draw the workpiece W. Here, 6 is a turret table on which the squeezing roll 5 is mounted, 7 is a traveling table on which the turret table is mounted, 8 is a drive screw for moving the traveling table 7 in the axial direction, and 9 is moving the turret table 6 in a direction perpendicular thereto. The drive shaft to be driven is shown.
【０００７】上記第１工程に使用する第１マンドレル３
は、中央部に截頭円錐形突出部１０と、それに連なる支
軸１１とを形成する。この截頭円錐形突出部１０の高さ
Ｈと先端部の径ｂは形成すべきボス部Ａ（図５参照）に
より決定される。The first mandrel 3 used in the first step
Has a frusto-conical projection 10 and a support shaft 11 connected to it at the center. The height H and the diameter b of the tip of the truncated conical projection 10 are determined by the boss A to be formed (see FIG. 5).
【０００８】上記被加工物Ｗは図２に示す如く、予め適
宜手段にて所定の外径と内孔ａとを有する適宜厚みを有
する円板状に形成する。加工に際しては被加工物Ｗの内
孔ａを支軸１１に嵌挿し、心押台４により押圧支持し、
絞りロール５をマンドレル３に沿って移行し、被加工物
Ｗをマンドレル３の截頭円錐形突出部１０に沿った截頭
円錐形部Ｃを有する中間素材Ｗａ（図３）を形成する。
図中１２は素材Ｗの反り防止用ロールを示し、絞りロー
ル５と同期して軸方向に移行し、素材を押圧支持する。As shown in FIG. 2, the workpiece W is previously formed into a disk shape having a predetermined outer diameter and an inner hole a and having an appropriate thickness by appropriate means. At the time of processing, the inner hole a of the workpiece W is inserted into the support shaft 11 and pressed and supported by the tailstock 4.
The squeezing roll 5 is moved along the mandrel 3 to form the workpiece W into an intermediate material Wa (FIG. 3) having a frusto-conical portion C along the frusto-conical projection 10 of the mandrel 3.
In the figure, reference numeral 12 denotes a roll for preventing warpage of the material W, which shifts in the axial direction in synchronization with the squeezing roll 5 to press and support the material.
【０００９】ついで第２工程（仕上げ工程）に移る。ま
ず上記マンドレル３を取外し、仕上げ用マンドレル２０
と交換する（図４）。このマンドレル２０は、上記截頭
円錐形部Ｃを直角に形成すべく、該円錐形部の頂部の内
径の所定長さの円筒部２１を直角に突出した形状とした
ものである。２２はこれに連設される支軸である。その
他は前例と同一構造であり、同一部品については同一符
号を付して説明を省略する。Next, the process proceeds to a second step (finishing step). First, the mandrel 3 is removed, and the finishing mandrel 20 is removed.
(Figure 4). This mandrel 20 has a shape in which a cylindrical portion 21 having a predetermined length with an inner diameter at the top of the conical portion is formed to project at a right angle in order to form the truncated conical portion C at a right angle. Reference numeral 22 denotes a spindle connected to this. The other parts have the same structure as the previous example, and the same parts are denoted by the same reference numerals and description thereof will be omitted.
【００１０】絞り作業に際しては、上記中間素材Ｗａを
マンドレル２０に取付け、絞りロール５によりマンドレ
ル２０に沿って截頭円錐形部Ｃの傾斜部を絞り加工によ
りマンドレル２０の小径円周面２３に押し付け直角に突
出したボス部Ａとすることにより、図５に示す製品Ｂを
形成することができる。In the drawing operation, the intermediate material Wa is attached to the mandrel 20, and the inclined portion of the frustoconical portion C is pressed against the small-diameter circumferential surface 23 of the mandrel 20 by the drawing roll 5 along the mandrel 20 by drawing. By forming the boss portion A projecting at a right angle, the product B shown in FIG. 5 can be formed.
【００１１】[0011]
【発明の効果】以上の如く本発明によるときは、円板素
材を、先ず截頭円錐形に絞り加工を施し、ついで該截頭
円錐の傾斜面を絞り加工により直角に形成して所定長さ
のボス部を形成するようにしたから、素材のメタルフロ
ーは阻害されることはなく、しかもボス長は比較的長い
ものでもその加工は容易に行うことができる。As described above, according to the present invention, a disk material is first drawn into a frustoconical shape, and then the inclined surface of the frustocone is formed at a right angle by drawing to obtain a predetermined length. Is formed, the metal flow of the material is not hindered, and the processing can be easily performed even if the boss length is relatively long.
【図１】本発明の円板状素材のボス出し成形方法の第１
工程の絞り加工説明図である。FIG. 1 is a first example of a method for forming a boss of a disk-shaped material according to the present invention.
It is drawing explanatory drawing of a process.
【図２】本発明に使用する素材の縦断面図である。FIG. 2 is a longitudinal sectional view of a material used in the present invention.
【図３】本発明の第１工程により形成された中間素材の
縦断面図である。FIG. 3 is a longitudinal sectional view of an intermediate material formed by a first step of the present invention.
【図４】本発明の円板状素材のボス出し成形方法の第２
工程の絞り加工説明図である。FIG. 4 shows a second example of the method of forming a boss of a disk-shaped material according to the present invention.
It is drawing explanatory drawing of a process.
【図５】本発明により形成された製品の縦断面図であ
る。FIG. 5 is a longitudinal sectional view of a product formed according to the present invention.
【図６】従来方法による円板状素材のボス出し成形方法
の説明図である。FIG. 6 is an explanatory view of a method of forming a boss of a disk-shaped material by a conventional method.
【図７】従来方法により形成された製品の縦断面図であ
る。FIG. 7 is a longitudinal sectional view of a product formed by a conventional method.
１ スピニングマシン ３ 第１マンドレル １０ 截頭円錐形突出部 ２０ 仕上げ用マンドレル Ｗ 素材 Ｗａ 中間素材 DESCRIPTION OF SYMBOLS 1 Spinning machine 3 1st mandrel 10 Truncated conical protrusion 20 Mandrel for finishing W material Wa intermediate material
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平10−305321（ＪＰ，Ａ) 特開 平10−296365（ＪＰ，Ａ) 独国特許出願公開19545890（ＤＥ，Ａ １) (58)調査した分野(Int.Cl.7，ＤＢ名) B21D 22/00 - 22/30 B21K 1/40 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-10-305321 (JP, A) JP-A-10-296365 (JP, A) German Patent Application Publication 19545890 (DE, A1) (58) Search Field (Int.Cl. 7 , DB name) B21D 22/00-22/30 B21K 1/40
Claims (1)
対し、円筒状ボス部を形成すべき箇所を絞り加工により
所定高さの截頭円錐形に形成し、ついで該円錐形の傾斜
面を略々直角となる様、絞り加工を施し同心円状に所定
長さのボス部を突出成形することを特徴とする円板状素
材のボス出し成形方法。1. A disk-shaped material having a predetermined outer diameter and an inner diameter is formed by drawing a portion where a cylindrical boss is to be formed into a frusto-conical shape having a predetermined height. A boss forming method for a disk-shaped material, wherein a boss portion having a predetermined length is formed in a concentric manner so as to be drawn so that an inclined surface becomes a substantially right angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13765797A JP3290098B2 (en) | 1997-05-12 | 1997-05-12 | Boss forming method of disk-shaped material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13765797A JP3290098B2 (en) | 1997-05-12 | 1997-05-12 | Boss forming method of disk-shaped material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10305322A JPH10305322A (en) | 1998-11-17 |
| JP3290098B2 true JP3290098B2 (en) | 2002-06-10 |
Family
ID=15203771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13765797A Expired - Fee Related JP3290098B2 (en) | 1997-05-12 | 1997-05-12 | Boss forming method of disk-shaped material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3290098B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19960582A1 (en) * | 1999-12-15 | 2000-08-03 | Leico Werkzeugmaschb Gmbh & Co | Pressure rolling process for transmission components, involving clamping workpiece to tool, rotating it, partly separating sector with pressure roller and deforming |
| DE502004005869D1 (en) * | 2003-11-17 | 2008-02-14 | Wf Maschinenbau Blechformtech | METHOD FOR PRODUCING A FLANGE ON A LEAD ENGINE |
| CN103934343B (en) * | 2014-04-21 | 2015-09-16 | 浙江大学 | The auxiliary spinning roller of band without core spinning machine and spin-on process |
-
1997
- 1997-05-12 JP JP13765797A patent/JP3290098B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10305322A (en) | 1998-11-17 |
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