JPS5861938A - Manufacture of rim and its material - Google Patents
Manufacture of rim and its materialInfo
- Publication number
- JPS5861938A JPS5861938A JP15907681A JP15907681A JPS5861938A JP S5861938 A JPS5861938 A JP S5861938A JP 15907681 A JP15907681 A JP 15907681A JP 15907681 A JP15907681 A JP 15907681A JP S5861938 A JPS5861938 A JP S5861938A
- Authority
- JP
- Japan
- Prior art keywords
- rim
- outline
- bent
- cylinder
- drop center
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
- B21D53/30—Making other particular articles wheels or the like wheel rims
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、自動車用車輪ホイールの深底リムの製造方法
とその材料に関するものであり、とくに改善をはかるこ
とにより肉やせのない軽量強化をはかつ次リムに係わる
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a deep-bottomed rim of an automobile wheel and its material, and in particular to a method for manufacturing a deep-bottomed rim for an automobile wheel, and in particular, it relates to a next-generation rim that can be improved to be lightweight and reinforced without becoming thinner. It is.
従来のｖｌ底リムは、一般的には平板材を丸め突合せ溶
接して円筒形となし、これをロール成形機械によって順
次リム輪郭を成形する方法がとられていた。この場合リ
ム輪郭のリムフランヂ付は根Ｒ部やドロップセンター角
部Ｒ部には局部的な肉やせが生じ、リムの強度を弱める
ことになり問題があった。Conventional VL bottom rims were generally made into a cylindrical shape by rounding and butt welding flat plates, and then sequentially forming the rim contour using a roll forming machine. In this case, attaching a rim flange to the rim contour has a problem in that localized thinning occurs at the root R and drop center corner R, which weakens the strength of the rim.
本発明は、か＼るリム輪郭の屈曲Ｒ部分の肉やせを防止
すると共に該部分の強度アップを計りつ＼、リムの重量
を軽量化せしめることを目的とするのである。The object of the present invention is to prevent the thinning of the bent R portion of the rim profile, increase the strength of this portion, and reduce the weight of the rim.
以下図面を参照しながらその詳細を説明する。The details will be explained below with reference to the drawings.
即ち第１図の如き深底リムの輪郭はリムフランヂ部（１
）とフランヂ付は根部（２）とビードシート部（３）と
ハング部（４）とサイドウオール部（５）とドロップセ
ンター角部（６）とドロップセンタ一部（７）とこれと
はソ対照的にドロップセンター角部（８）とサイドウオ
ール部（９）とスペシャルレツヂ部（転））と□ ハン
グ部■とビードシート部（転）とンランヂ付ケ根部（ト
）とリム７ランヂ部（Ｌ４とから成っている。That is, the outline of the deep rim as shown in Fig. 1 is the rim flange part (1
) and flanged parts include the root part (2), bead seat part (3), hang part (4), side wall part (5), drop center corner part (6), part of the drop center (7), and the part with a flange. In contrast, the drop center corner part (8), the sidewall part (9), the special retsuji part (turn)), the hang part ■, the bead seat part (turn), the root part of the landing plate (g), and the rim 7 landing. (L4)
このリムの輪郭において輪郭の屈曲部の小さいＲ部分即
ちリム７ランヂ付は根部（２）、 （１３）およびド
ロップセンター角部（６）、 （８）部の半径Ｒとこれ
に連らなる挟角αの部分を残して平らに展開し九第２図
の如き断面形状とし九ＩＪム素材を圧延加工、押し出し
加工等によって製作し１次でこれを第３図のように丸め
て突合せ部を溶接して円筒となした後にロール成形加工
によって。In this rim profile, the small R part of the curved part of the profile, that is, the rim 7 lunge, is the radius R of the roots (2), (13) and the drop center corner parts (6), (8), and the pinch points connected thereto. It is rolled out flatly leaving the corner α part, and the cross-sectional shape is as shown in Fig. 2. The IJ material is manufactured by rolling, extrusion, etc., and in the first step, it is rolled as shown in Fig. 3 to form the butt part. After being welded into a cylinder, it is rolled formed.
第４図（イ）、（ロ）、（ハ）のように、順次リム輪郭
に成形するのである。As shown in FIGS. 4(a), 4(b), and 4(c), the rim contours are formed one after another.
かくの如きリム素材は丸め加工にあたってはその断面係
数は平板とはｙ近似であるので丸め加工は容易である。Such a rim material can be easily rounded because its section modulus is y approximation to that of a flat plate.
ｔた。このリム素材円筒のロール成形にあたって社、リ
ム輪郭の屈曲ｒ部に相当する部位はそのｒとその屈曲角
部にはｙ同一または近穢の角度αは素材時に形成されて
いるので、ｒ部の折り曲げによって生ずる肉やせは生ず
ることはなく、各部の直径差をつけつ＼素材量セクショ
ンを立上げる如きロール成形加工がなされることになシ
、直径差をつけることによシトロツブ部側は圧縮応力を
７ランデ部側は引張応力を与えられることになる。It was. When rolling this cylinder of rim material, the part corresponding to the bent r part of the rim contour is the same as y or the angle α is formed at the bent corner part at the time of the raw material, so the r part The thinning caused by bending does not occur, and the roll forming process is performed such as raising the material section while making diameter differences in each part. 7. Tensile stress will be applied to the land area side.
この場合、径差によって生ずる引張、圧縮歪は１０〜１
５チ程度の加工歪であり、かつリム７ランヂ付は根ｒ部
ｉｉθ〜３％程度の引張歪であり。In this case, the tensile and compressive strain caused by the diameter difference is 10 to 1
The processing strain is about 5 inches, and the rim with 7 lunges has a tensile strain of about 3% at the root part iiθ.
ドロップセンター角部ｒ部で／ｆｉ１０〜１５チ程度の
圧縮歪を受は肉厚が増大する方向の歪を受けることにな
り、ロール成形加工においてｒ部の肉・・やせはほとん
ど生じないことになる。The r part of the corner of the drop center receives a compressive strain of about /fi 10 to 15 inches, and is subjected to strain in the direction of increasing the wall thickness, and during roll forming, the thickness of the r part almost never thins. Become.
ちなみに、平板からロール成形するものにあってＦｉｒ
部の屈曲加工による歪＃ｉ２０〜３０チ程度となり、リ
ムセクション圧下ロール加圧加工力と相まって悪くする
と極部収縮歪による肉やせが発生し極端な強度低下を与
えることが生ずるのである。By the way, for products that are roll-formed from a flat plate, Fir
The strain due to the bending process of the rim section is approximately #i20 to 30 degrees, and if this is combined with the pressing force of the rim section rolling roll, thinning of the material occurs due to shrinkage strain at the extreme part, resulting in an extreme decrease in strength.
本発明の加工法でＦｉ、屈曲ｒ部の加工歪は小さいので
、肉やせが生ずることがないばかりか。With the processing method of the present invention, the processing strain at the Fi and bent r portions is small, so not only will thinning of the meat not occur.
特にこの部分を肉厚にしてよシ強化させる如くし、ある
いはハング部を肉厚に形成しておいてもよい。In particular, this portion may be made thicker to further strengthen it, or the hanging portion may be formed thicker.
以上の如く本発明のリムの製造法とその素材によれば、
肉やせのない強度のバランスがとれた嵯量のリムを造る
ことができ、有効な発明である。As described above, according to the rim manufacturing method and material of the present invention,
This is an effective invention, as it is possible to create a rim with a well-balanced bulk and strength without causing loss of flesh.
第１図Ｆｉ深底リムの部分断面図。
Ｍ２図は本発明のリム素材の断面を示す斜視図。
第３図は第２図の素材を丸めた円筒状素材の斜視図。
第４図は第３図の素材の整形加工順を示す堕・分断面図
。
である。
（１）・・・・リム７ランヂ部
（２）川・７ランヂ付は根部
（３）・・・・ビードシート部
（４）・・・・ハング部
（５）…拳すイドウオール部
（６）・・・・ドロップセンター角部
（７）・・・ｅドロップセンタ一部
（８）・・・・ドロップセンター角部
（９）・・・・サイドウオール部
１）−・・・スペシャルレツチ部
（２）・・・φハング部
（２）０００．ビードシート部
（財）・・・・フランヂ付は根部
（ロ）・・・Φリムフランヂ部FIG. 1 is a partial sectional view of the Fi deep rim. FIG. M2 is a perspective view showing a cross section of the rim material of the present invention. FIG. 3 is a perspective view of a cylindrical material obtained by rolling up the material shown in FIG. 2. FIG. 4 is a collapsed cross-sectional view showing the order of shaping and processing of the material shown in FIG. 3. It is. (1)...Rim 7 lunge part (2) Root part (3)...Bead seat part (4)...Hang part (5)...Fist wall part (6) )...Drop center corner (7)...E drop center part (8)...Drop center corner (9)...Side wall part 1) -...Special retouch part (2)...φ hang part (2)000. Bead seat part (foundation)...With flange, root part (b)...Φ rim flange part
Claims (2)
Ｒ部のみが予め形成され他の部分の輪郭が平板状に展開
された断面を有するリム素材を製作し、該リム素材を円
筒に丸めて突合せ部を突合せ溶接し、しかる後にロール
成形によシ最終リム輪郭を形成せしめる如くしたことを
特徴とするリムの製造法。(1) By rolling or extruding, a rim material having a cross section in which only the bent R portion of the contour of the rim is preformed and the outline of the other portions is developed into a flat plate shape is produced, and the rim material is rolled into a cylinder. A method of manufacturing a rim, characterized in that the butt portions are butt-welded, and then the final rim profile is formed by roll forming.
成され、他の部分の輪郭が平板状に展開されている断面
を備えていることを特徴とするリム素材。(2) A rim material characterized in that the deep rim has a cross section in which a bent R portion of the rim outline is formed and the outline of the other portion is developed into a flat plate shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15907681A JPS5861938A (en) | 1981-10-06 | 1981-10-06 | Manufacture of rim and its material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15907681A JPS5861938A (en) | 1981-10-06 | 1981-10-06 | Manufacture of rim and its material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5861938A true JPS5861938A (en) | 1983-04-13 |
| JPH0133259B2 JPH0133259B2 (en) | 1989-07-12 |
Family
ID=15685688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15907681A Granted JPS5861938A (en) | 1981-10-06 | 1981-10-06 | Manufacture of rim and its material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5861938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6961999B2 (en) * | 2003-02-25 | 2005-11-08 | William B Shook | Lightweight bicycle wheel rim and method for producing it |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5326256A (en) * | 1976-08-24 | 1978-03-10 | Hashimoto Forming Kogyo Co | Method of manufacturing car wheel ring and the like |
-
1981
- 1981-10-06 JP JP15907681A patent/JPS5861938A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5326256A (en) * | 1976-08-24 | 1978-03-10 | Hashimoto Forming Kogyo Co | Method of manufacturing car wheel ring and the like |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6961999B2 (en) * | 2003-02-25 | 2005-11-08 | William B Shook | Lightweight bicycle wheel rim and method for producing it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0133259B2 (en) | 1989-07-12 |
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