JPS5886938A - Manufacture of steering stem - Google Patents
Manufacture of steering stemInfo
- Publication number
- JPS5886938A JPS5886938A JP18617381A JP18617381A JPS5886938A JP S5886938 A JPS5886938 A JP S5886938A JP 18617381 A JP18617381 A JP 18617381A JP 18617381 A JP18617381 A JP 18617381A JP S5886938 A JPS5886938 A JP S5886938A
- Authority
- JP
- Japan
- Prior art keywords
- forming
- die
- steering stem
- die cavity
- diameter part
- 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
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/10—Making machine elements axles or shafts of cylindrical form
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はオートバイのフロントフォークに取付けられる
ステアリングステムの製造方法に関する亀のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a steering stem attached to a front fork of a motorcycle.
従来のステアリングステムは第６図のように円筒形の金
属パイプ因の一端に別体の金属Ｖヤフか０を差し込んで
＃擬するといつ先方法で製造されていた。Conventional steering stems were manufactured using the same method as shown in Figure 6, in which a separate metal V or 0 was inserted into one end of a cylindrical metal pipe to simulate #.
しかしこの方法によれば二つの部品を組享合せて溶接に
よ）連結する４のであるから、材料費が嵩むばかりか製
造に手間がかかり、ｉｋ産できず、そのうえ組付は不良
あるいは溶接歪等による大きな寸法誤差が生、じ高い寸
法精度が得られない等の不都合が生じていた。However, according to this method, two parts are assembled and connected (by welding)4, which not only increases material costs but also takes time and effort to manufacture. This has caused problems such as large dimensional errors due to such factors and the inability to obtain high dimensional accuracy.
そこで本開明はステアリングステムの一端を絞り成型に
よって一体のシャフトに成型することにより、前記欠点
を解決したステアリングステムの製造方法を提供しよう
とするものである。Therefore, the present invention aims to provide a method of manufacturing a steering stem that solves the above-mentioned drawbacks by forming one end of the steering stem into an integral shaft by drawing.
以下本発明の一実施例を図面に基づいて詳述する。第１
図、第２図においてｌはオートバイのステアリングステ
ムであり、金属パイプ２の一端に拡大径のベアリング嵌
合部８を設け、他端Ｋ Ａｄ準小径厚肉Ｖヤフ）部４を
設け、厚肉Ｖヤフト部４の隣接部にネジ部６を形成した
ものであり、フロントフォーク゛′６．６間の連結材料
７に浴接等によ抄固定されている。An embodiment of the present invention will be described below in detail with reference to the drawings. 1st
In FIGS. 2 and 2, l is a steering stem of a motorcycle, in which a bearing fitting part 8 with an enlarged diameter is provided at one end of a metal pipe 2, a semi-small diameter thick-walled part 4 is provided at the other end, and a thick-walled A threaded portion 6 is formed adjacent to the V-shaft portion 4, and is fixed to the connecting material 7 between the front forks 6 and 6 by bath welding or the like.
次にこのステアリングステムｌの製造工程を説明する。Next, the manufacturing process of this steering stem 1 will be explained.
第８図イに示すように一端に拡大径部８を有し、他端に
縮小径部９を有する第１型孔１０ｔ−備えた第１ダイス
１１の第１型孔１０の内部にラムｌ！にて金−バイブ２
を冷間で圧入して第１の成型を行ないさらに第８図りに
示すように一端に拡大径部８′を有し、他端に縮小径部
９′を有する第１！型孔１０′を備えた第２ダイス１１
’のＭ２Ｍ孔ｌＯ′の内部にツム１２’にて第１の成型
を終えた金属パイプ２を圧入して第２の成型を行なえば
、第４図に示す一端にベアリング嵌合部８を、他端に厚
肉ＶヤフＦ部４を有する中間製品１′が得られ、この中
間製品１′の厚内シャフト部３の神、接部外局面にネジ
切りを行ないネジ部６を形成してステアリングステム１
が得られる。As shown in FIG. 8A, a ram l is inserted into the first mold hole 10 of the first die 11 having a first mold hole 10t having an enlarged diameter portion 8 at one end and a reduced diameter portion 9 at the other end. ! Gold - Vibrator 2
is cold press-fitted to perform the first molding, and as shown in Figure 8, the first molding member has an enlarged diameter portion 8' at one end and a reduced diameter portion 9' at the other end. Second die 11 with mold hole 10'
If the metal pipe 2 which has completed the first molding is press-fitted into the M2M hole lO' with the tab 12' and the second molding is performed, a bearing fitting part 8 is formed at one end as shown in FIG. An intermediate product 1' having a thick V-shaped shaft part 4 at the other end is obtained, and a threaded part 6 is formed by threading the inner and outer surfaces of the thick inner shaft part 3 of this intermediate product 1'. steering stem 1
is obtained.
上記製造過程において金属パイプ２の一端は型孔ｔｔ、
ｔｔ’の縮小径部９．９′に圧入されて紋９加工される
ため縁材と同等の強度を有する４肉Ｖヤフ）部８に成型
される。In the above manufacturing process, one end of the metal pipe 2 has a mold hole tt,
Since it is press-fitted into the reduced diameter part 9.9' of tt' and processed with a pattern 9, it is formed into a 4-walled V-yaf) part 8 having the same strength as the edge material.
以上実施例に示すように本発明ステアリングステムの製
造方法によれば、ステアリングステムの一端のＶヤス４
部をダイスによる絞夛加工を施こして一体に成型するよ
うＫし丸ものであり、溶接により別体のＶヤフトを溶接
するものと異なり材料費が嵩まず、製造に手間がかから
ず量産でき、そのうえ曲がりや歪等の発生が少なく高い
寸法精度の製品が得られる等の効果を有している。As shown in the embodiments above, according to the method for manufacturing a steering stem of the present invention, the V-shaft 4 at one end of the steering stem
The parts are drawn with a die and molded into a single piece, making it a round piece. Unlike welding, which involves welding separate V-yafts, material costs do not increase, and manufacturing is time-consuming and mass-produced. Moreover, it has the effect of producing products with high dimensional accuracy with less occurrence of bending, distortion, etc.
第１図〜第４図は本発明の一実施例を示し、第１図はス
テアリングステムの取付状態を示す斜視図、第２図は縦
断面図、第８図イ、ｐ、ハは製造工程を示す断面図、第
４図は中間製品の斜視図、第６図は従来のステアリング
ステムを示す断面図である。
２・・・金属パイプ ＄・・・厚肉Ｖヤフト ４・・・
ベアリング嵌合部 ８．８′・・・拡大径部 ９．９’
・・・縮小径部 １０・・・第１型孔 ｔｏ’−・・第
１型孔１０・・・第１ダイス １１′・・・第２ダイス
第 １ 図
第２図
（イ）
（ハ）
第５図
第４図Figures 1 to 4 show one embodiment of the present invention, Figure 1 is a perspective view showing the installed state of the steering stem, Figure 2 is a longitudinal sectional view, and Figure 8 A, P, and C are manufacturing steps. 4 is a perspective view of an intermediate product, and FIG. 6 is a sectional view showing a conventional steering stem. 2...Metal pipe $...Thick-walled V-yaft 4...
Bearing fitting part 8.8'...Enlarged diameter part 9.9'
...Reduced diameter portion 10...First mold hole to'-...First mold hole 10...First die 11'...Second die 1 Figure 2 (A) (C) Figure 5Figure 4
Claims (1)
孔を備え九〆イスの型孔内に金属パイプ全圧入し、金属
パイプの一端を膨出成型してベアリング嵌合部を形成す
る一方、１ｔｈ−を設り成型して厚肉Ｖヤフ）部を形成
することを特徴とするステアリングステムの製造η法。1. Completely press-fit the metal pipe into the mold hole of the chair, which has a shaped hole with an enlarged diameter part at one end and a small diameter part at the other @KM, and mold one end of the metal pipe to bulge and fit the bearing. A method for manufacturing a steering stem, which is characterized in that a joint portion is formed, and a 1th- portion is provided and molded to form a thick-walled V-yaf) portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18617381A JPS5886938A (en) | 1981-11-18 | 1981-11-18 | Manufacture of steering stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18617381A JPS5886938A (en) | 1981-11-18 | 1981-11-18 | Manufacture of steering stem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5886938A true JPS5886938A (en) | 1983-05-24 |
| JPH0215294B2 JPH0215294B2 (en) | 1990-04-11 |
Family
ID=16183662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18617381A Granted JPS5886938A (en) | 1981-11-18 | 1981-11-18 | Manufacture of steering stem |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5886938A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01205814A (en) * | 1988-02-09 | 1989-08-18 | Futaba Kogyo Kk | Structure, working method, working apparatus and working tools for metallic pipe end part |
| US5216912A (en) * | 1991-08-05 | 1993-06-08 | Takeru Tanaka | Steering shaft and manufacturing method therefor |
| US5546647A (en) * | 1993-04-06 | 1996-08-20 | Pruna; Alberto N. | Method of making an ejector tube for molds |
| US6145185A (en) * | 1997-10-31 | 2000-11-14 | Hwang; Jeng-Yih | Method for forming a connecting pipe of a high pressure connector for fluid |
| KR100590117B1 (en) | 2004-08-26 | 2006-06-19 | 이재구 | Wheel shaft production method |
| KR100835946B1 (en) | 2006-12-19 | 2008-06-09 | 이재구 | Middle thing for out put shaft processing |
| CN106112416B (en) * | 2016-08-30 | 2018-07-13 | 重庆宏雷机械制造有限公司 | The processing technology of steering column |
-
1981
- 1981-11-18 JP JP18617381A patent/JPS5886938A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01205814A (en) * | 1988-02-09 | 1989-08-18 | Futaba Kogyo Kk | Structure, working method, working apparatus and working tools for metallic pipe end part |
| US5216912A (en) * | 1991-08-05 | 1993-06-08 | Takeru Tanaka | Steering shaft and manufacturing method therefor |
| US5546647A (en) * | 1993-04-06 | 1996-08-20 | Pruna; Alberto N. | Method of making an ejector tube for molds |
| US6145185A (en) * | 1997-10-31 | 2000-11-14 | Hwang; Jeng-Yih | Method for forming a connecting pipe of a high pressure connector for fluid |
| KR100590117B1 (en) | 2004-08-26 | 2006-06-19 | 이재구 | Wheel shaft production method |
| KR100835946B1 (en) | 2006-12-19 | 2008-06-09 | 이재구 | Middle thing for out put shaft processing |
| CN106112416B (en) * | 2016-08-30 | 2018-07-13 | 重庆宏雷机械制造有限公司 | The processing technology of steering column |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0215294B2 (en) | 1990-04-11 |
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