JPS5933461B2 - Manufacturing method of flange for drive shaft cover - Google Patents
Manufacturing method of flange for drive shaft coverInfo
- Publication number
- JPS5933461B2 JPS5933461B2 JP2643781A JP2643781A JPS5933461B2 JP S5933461 B2 JPS5933461 B2 JP S5933461B2 JP 2643781 A JP2643781 A JP 2643781A JP 2643781 A JP2643781 A JP 2643781A JP S5933461 B2 JPS5933461 B2 JP S5933461B2
- Authority
- JP
- Japan
- Prior art keywords
- flange
- drive shaft
- manufacturing
- shaft cover
- welding
- 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
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
- B21D53/86—Making other particular articles other parts for bicycles or motorcycles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
本発明は例えばシャフトドライブ方式のオートバイに用
いられているドライブシャフトカバー用フランジの製造
方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a flange for a drive shaft cover used, for example, in a shaft drive type motorcycle.
一般にこの種のフランジは筒体の一端外周に鍔部を形成
したものであり、筒体の他端を溶接によりドライブシャ
フト外周の筒状シャフトカバーの一端に接続するように
している。Generally, this type of flange has a flange formed on the outer periphery of one end of a cylindrical body, and the other end of the cylindrical body is connected to one end of a cylindrical shaft cover on the outer periphery of the drive shaft by welding.
しかし従来この種のフランジは殆んどが鋳造により製造
されており、このような鋳造品では表面が粗雑で寸法に
ばなつきが生じているため内面や鍔部を滑らかに研摩加
工すると共に正規の寸法に修正加工する必要があり、従
つて製造に手間がかかり、そのうえ鋳造のための溶鉱炉
が必要で費用が嵩み製造コストが高くなり、しかも鋳物
であるから鉄製のシャフトカバーに対しての溶接強度が
弱い等の欠点があつた。However, in the past, most of these types of flanges were manufactured by casting, and since the surface of such cast products is rough and the dimensions vary, the inner surface and flange must be polished smooth and the regular It is necessary to modify the dimensions, therefore it takes time to manufacture, and in addition, a blast furnace is required for casting, which increases the manufacturing cost.Furthermore, since it is a cast product, welding to the iron shaft cover is difficult. It had drawbacks such as low strength.
そこで本発明はフランジを塑性を有する鉄材から冷間鍛
造方法により製造することにより、前記欠点を一挙に解
決した新たなドライブシャフトカバー用フランジの製法
を提供しようとするものである。Therefore, the present invention aims to provide a new method for manufacturing a flange for a drive shaft cover that solves the above-mentioned drawbacks at once by manufacturing the flange from a steel material having plasticity by a cold forging method.
本発明の一実施例を図面に基づいて詳述する。An embodiment of the present invention will be described in detail based on the drawings.
ドライブシャフトカバー用フランジ１の外形はギヤケー
シング２、２に取付けるための鍛部３を有し、鍔部中央
には円筒部４を片面に突出した状態に形成している。そ
してこの円筒部４は鍔部３側の内外径が大きく、反対の
底部の底部側の内外径が小さくなつた段付形状に形成し
ている。そしてこの小径部４ａ内端の内周にはリング５
を溶接している。前記鍔部３にはボルト孔６、６、６、
６を穿設している。The outer shape of the drive shaft cover flange 1 has a forged part 3 for attachment to the gear casings 2, 2, and a cylindrical part 4 is formed in the center of the flange so as to protrude on one side. The cylindrical portion 4 has a stepped shape in which the inner and outer diameters on the side of the flange portion 3 are large and the inner and outer diameters on the opposite bottom side are smaller. A ring 5 is provided on the inner periphery of the inner end of this small diameter portion 4a.
are welded. The flange 3 has bolt holes 6, 6, 6,
6 is drilled.
そしてこのフランジの小径部４ａをドライブシャフトカ
バーＴの一端に差し込んで周囲８を溶接して取付ける。Then, the small diameter portion 4a of this flange is inserted into one end of the drive shaft cover T, and the periphery 8 is welded and attached.
一方ギヤケース２のフランジ２ａに鍔部３を合せてボル
ト１５、１５・・・で連結する。On the other hand, the flange 3 is aligned with the flange 2a of the gear case 2 and connected with bolts 15, 15, . . . .
次に上記フランジ１の製造方法について説明する。Next, a method of manufacturing the flange 1 will be explained.
先ず塑性を有する軟鉄製の円板状金属板材９を第４図イ
〜ホに示すように種々のポンチ１０とダイス１１により
順次深絞り加工をする。First, a disk-shaped metal plate 9 made of soft iron having plasticity is sequentially deep-drawn using various punches 10 and dies 11, as shown in FIG. 4A to E.
これによつて第４図ホに示す鍔付有底円筒型中間製品１
２が成形される。As a result, the flange-bottomed cylindrical intermediate product 1 shown in FIG.
2 is molded.
次にこの底部１２ａを第４図へに示すようにポンチ１３
とダイス１４により打抜くとともに底部側直径Ｄ１が小
さく鍔部直径Ｄ２が大きくなるように絞り成形する。Next, punch this bottom portion 12a with a punch 13 as shown in FIG.
It is punched out with a die 14 and drawn so that the bottom diameter D1 is small and the flange diameter D2 is large.
このように成形された小径部４ａの内周は寸法精度の向
上により、リング５が修正加工を要することなく滑らか
に挿入することができ、しかも同質材であるので、溶接
の作業性が向上し、そして絞部の強度を高めることがで
きるＯそして上記鍔部３には打抜きによりボルト孔６を
穿設する。The improved dimensional accuracy of the inner periphery of the small diameter portion 4a formed in this way allows the ring 5 to be inserted smoothly without requiring any modification work, and since it is made of the same material, welding workability is improved. , and the bolt holes 6 are punched out in the flange portion 3 to increase the strength of the constricted portion.
上記の製法により構成されたフランジはその素材が軟鉄
であり、前述のドライブシヤフトカバー７とは同質であ
るから完全に溶接できる。The flange constructed by the above manufacturing method is made of soft iron and is of the same quality as the drive shaft cover 7 described above, so it can be completely welded.
しかも冷間鍛造製品であるから表面滑らかで寸法精度が
高く成型後において、従来の熱間鍛造製品のように内面
やフランジ面を仕上げ加工したりあるいは修正加工する
必要がないのでリングの挿入も滑らかとなり溶接作業も
手間を要せず簡単に行なうことができる。In addition, since it is a cold forged product, the surface is smooth and dimensional accuracy is high. After molding, unlike conventional hot forged products, there is no need to finish or modify the inner surface or flange surface, so the ring can be inserted smoothly. Therefore, welding work can be easily performed without requiring any effort.
そのうえ冷間鍛造製品であるから、その製造には溶鉱炉
が不要で製造設備に費用が嵩まず安価に製作でき、しか
も鋳造品でないのでドライブシヤフトカバ一とリングと
の絞部が補強され且つ溶接強度は高く完全な溶接ができ
るので、走行中の上下振動に対する強度が一層増し安全
性が向上する。In addition, since it is a cold forged product, it does not require a blast furnace to manufacture, and can be manufactured at low cost without increasing the cost of manufacturing equipment.Furthermore, since it is not a cast product, the constriction between the driveshaft cover and the ring is reinforced and the welding strength is increased. Since the welding speed is high and complete welding is possible, the strength against vertical vibrations during driving is further increased and safety is improved.
図面は本発明のドライブシヤフトカバ一用フランジを示
し、第１図は斜視図、第２図は縦断面図、第３図はドラ
イブシヤフトカバ一に取付けた状態の斜視図、第４図イ
〜トは製造工程を示す断面図である。
３・・・・・・鍔部、６・・・・・・ボルト孔、１０，
１３・・・・・・ポンチ、１１，１４・・・・・・ダイ
ス、１２・・・・・・鍔付有底円筒型、１２ａ・・・・
・・底部、Ｄ１・・・・・・底部側直径、Ｄ２・・・・
・・鍔側直径。The drawings show a flange for a drive shaft cover according to the present invention; FIG. 1 is a perspective view, FIG. 2 is a vertical sectional view, FIG. 3 is a perspective view of the flange attached to the drive shaft cover, and FIGS. FIG. 7 is a cross-sectional view showing the manufacturing process. 3... Flange, 6... Bolt hole, 10,
13...Punch, 11, 14...Dice, 12...Cylindrical shape with flange and bottom, 12a...
...Bottom, D1...Bottom side diameter, D2...
・・Brim side diameter.
Claims (1)
円筒型中間製品を形成した後この中間製品の底部を打ち
抜くとともにポンチとダイスにより底部側直径が小さく
鍔部直径が大きくなるように絞り成形し、前記小径部内
端の内周にリングを溶接し鍔部にボルト孔を穿設して形
成するドライブシャフトカバー用フランジ製造方法。1. After deep-drawing the center of a plastic metal plate to form a cylindrical intermediate product with a flange and a bottom, the bottom of this intermediate product is punched out and punched with a punch and die so that the diameter of the bottom side is small and the diameter of the flange is large. A method for manufacturing a flange for a drive shaft cover, which is formed by drawing, welding a ring to the inner periphery of the inner end of the small diameter portion, and drilling bolt holes in the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2643781A JPS5933461B2 (en) | 1981-02-24 | 1981-02-24 | Manufacturing method of flange for drive shaft cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2643781A JPS5933461B2 (en) | 1981-02-24 | 1981-02-24 | Manufacturing method of flange for drive shaft cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57139433A JPS57139433A (en) | 1982-08-28 |
| JPS5933461B2 true JPS5933461B2 (en) | 1984-08-16 |
Family
ID=12193477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2643781A Expired JPS5933461B2 (en) | 1981-02-24 | 1981-02-24 | Manufacturing method of flange for drive shaft cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5933461B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5992280A (en) * | 1982-11-19 | 1984-05-28 | ヤマハ発動機株式会社 | Shaft drive type car with rear two wheel |
-
1981
- 1981-02-24 JP JP2643781A patent/JPS5933461B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57139433A (en) | 1982-08-28 |
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