JPH0324288B2 - - Google Patents
Info
- Publication number
- JPH0324288B2 JPH0324288B2 JP60019427A JP1942785A JPH0324288B2 JP H0324288 B2 JPH0324288 B2 JP H0324288B2 JP 60019427 A JP60019427 A JP 60019427A JP 1942785 A JP1942785 A JP 1942785A JP H0324288 B2 JPH0324288 B2 JP H0324288B2
- Authority
- JP
- Japan
- Prior art keywords
- intermediate product
- thickness
- plate
- rolling
- metal
- 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
- 239000002184 metal Substances 0.000 claims description 34
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 239000013067 intermediate product Substances 0.000 claims description 22
- 238000005096 rolling process Methods 0.000 claims description 17
- 238000003466 welding Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000009987 spinning Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 230000007547 defect Effects 0.000 description 6
- 238000010409 ironing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010953 base metal Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000376 effect on fatigue Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
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
- B21D53/14—Making other particular articles belts, e.g. machine-gun belts
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、例えば伝動用積層ベルトなどに用い
る無端薄板金属バンドの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for manufacturing an endless thin metal band used for, for example, a laminated power transmission belt.
（従来の技術）
例えば自動車用無段変速機などに用いる積層金
属バンド、例えばバン・ドーネル形伝動用無端金
属Ｖベルト（VDTベルト）は、第５図に概念的
に示されるように、積層ベルト１を一対のプーリ
２，３間に張り渡して動力を伝達する。この種の
積層ベルト１は、第６図に例示したように複数枚
（10〜18枚位）のステンレス鋼などからなる無端
金属バンド１ａ，１ｂ，１ｃ（一部のみ図示）を
厚み方向に積層するとともに、金属バンド１ａ，
１ｂ，１ｃに沿つて多数の金属こま５が保持され
る。そして金属こま５を介して動力の伝達が行な
われるようになつている。(Prior Art) For example, a laminated metal band used in continuously variable transmissions for automobiles, such as a Van Donnel type endless metal V belt for power transmission (VDT belt), is a laminated belt as conceptually shown in FIG. 1 is stretched between a pair of pulleys 2 and 3 to transmit power. As illustrated in FIG. 6, this type of laminated belt 1 consists of a plurality of (approximately 10 to 18) endless metal bands 1a, 1b, and 1c (only some of which are shown) made of stainless steel, etc., laminated in the thickness direction. At the same time, the metal band 1a,
A large number of metal pieces 5 are held along 1b and 1c. Power is transmitted through the metal top 5.
この種の継目なし薄板金属バンドを製造する方
法として、以下述べるないしの方法が考えら
れる。 As a method for manufacturing this type of seamless sheet metal band, the following methods can be considered.
金属板に周知のプレス金型による深絞り成形
を行なつて、第７図に示されるようハツト形の
中間製品７を得る。次に特開昭57−14430号公
報に見られるような、しごきスピニング加工を
行なつて、所望の厚み（VDTベルトでは0.1〜
0.2mm位）まで圧延する。その後、上記中間製
品７の円筒状部分７ａをスリツト加工などによ
り輪切りにして、継目無しの薄板金属バンドを
得る。ここでスピニング加工とは、第８図に示
されるようにハツト形の中間製品７をマンドレ
ル８に挿着し、その円筒状部分７ａを側方から
ローラ９等でしごきつつ圧延する加工である。 The metal plate is deep drawn using a well-known press die to obtain a hat-shaped intermediate product 7 as shown in FIG. Next, as seen in Japanese Patent Application Laid-open No. 57-14430, the ironing and spinning process is performed to obtain the desired thickness (0.1 to
Roll to about 0.2mm). Thereafter, the cylindrical portion 7a of the intermediate product 7 is cut into rings by slitting or the like to obtain a seamless thin metal band. Here, the spinning process is a process in which a hat-shaped intermediate product 7 is inserted into a mandrel 8 as shown in FIG. 8, and the cylindrical part 7a is rolled while being squeezed from the side with a roller 9 or the like.
また別の方法として、予め製品板厚（0.1mm
〜0.2mm）まで圧延された帯状の金属薄板を、
第９図に示されるようにリング状にし、その突
合わせ端１′をレーザ溶接あるいは電子ビーム
溶接により接合して無端薄板金属バンド１を得
ることもできる。 Another method is to prepare the product board thickness (0.1 mm) in advance.
A strip-shaped metal sheet rolled to ~0.2mm) is
As shown in FIG. 9, the endless thin metal band 1 can also be obtained by making it into a ring shape and joining the abutting ends 1' by laser welding or electron beam welding.
また特開昭56−119608号公報に見られるよう
に、シームレス管のように継ぎ目の無い円筒状
の材料を所定厚みになるまでスピニング加工し
たのち輪切りにすることも提案されている。 Furthermore, as seen in Japanese Patent Application Laid-Open No. 56-119608, it has been proposed to spin a seamless cylindrical material such as a seamless pipe to a predetermined thickness and then cut it into rings.
（発明が解決しようとする問題点）
しかしながら上記の方法では次のような問題
がある。(Problems to be Solved by the Invention) However, the above method has the following problems.
深絞り成形による中間製品７は必然的に鍔部７
ｂと底部７ｃをもつため、バンドに加工できる円
筒状部分７ａが全体の50〜60％程度に過ぎず、歩
留りが非常に悪い。 The intermediate product 7 formed by deep drawing inevitably has a flange part 7.
b and bottom 7c, the cylindrical portion 7a that can be processed into a band accounts for only about 50 to 60% of the total, resulting in a very low yield.
また通常の深絞り成形においては、その成形特
性として板厚の制限が大きく、一般に深絞り成形
可能な最少板厚は0.5mm程度が限度である。この
結果、しごきスピニング加工による所望板厚への
圧延加工率は、例えば0.5mm→0.1mmと約80％ほど
にも達する。このような圧延加工率が80％以上に
及ぶと、鋼、特にステンレス鋼において脆化が顕
著となる。甚だしく脆化を生じた材料は、降伏点
まで引張り荷重が付加されると伸びをほとんど示
さずに降伏点付近で破断に至り、金属バンドの耐
疲労性に悪影響を与える。 In addition, in normal deep drawing, there are large restrictions on sheet thickness as a forming characteristic, and generally the minimum sheet thickness that can be deep drawn is limited to about 0.5 mm. As a result, the rate of rolling to the desired plate thickness by ironing and spinning reaches approximately 80%, for example from 0.5 mm to 0.1 mm. When such a rolling reduction rate reaches 80% or more, embrittlement becomes noticeable in steel, especially stainless steel. When a material that has become severely brittle is subjected to a tensile load up to its yield point, it exhibits almost no elongation and breaks near the yield point, which adversely affects the fatigue resistance of the metal band.
一方、の方法では溶接部にブローホールと呼
ばれる欠陥（球状の空洞）が発生することがあ
る。この欠陥に応力集中を生じると、板厚が薄い
ため疲労性への影響が大である。また、溶接時の
熱による溶接部の軟化あるいは硬化などが発生
し、母材部との機械的性質の差が生じる。これも
疲労性に大きな影響を与える原因となる。 On the other hand, in the method (2), defects called blowholes (spherical cavities) may occur in the welded portion. If stress concentration occurs at this defect, it will have a large effect on fatigue properties because the plate thickness is thin. In addition, the heat generated during welding causes softening or hardening of the welded part, resulting in a difference in mechanical properties from the base metal part. This also causes a large effect on fatigue properties.
上記の方法では、互いに長さが少しずつ異な
る複数種類の金属バンドを製造するには、外径が
異なる複数種類のシームレス管を、所望厚みとな
るように加工しなければならず、技術的およびコ
スト的な面で実用化が難しい。 In the above method, in order to manufacture multiple types of metal bands with slightly different lengths, multiple types of seamless tubes with different outer diameters must be processed to the desired thickness, which requires technical and Practical implementation is difficult due to cost.
従つて本発明の目的は、溶接によつて所定長さ
のものが容易に得られるとともに、その溶接部分
が強度的な弱点になることを防止することがで
き、溶接を用いた無端金属バンドを実用化するこ
とが可能となるような製造方法を提供することに
ある。 Therefore, an object of the present invention is to provide an endless metal band using welding, in which a predetermined length can be easily obtained by welding, and the welded part can be prevented from becoming a weak point in strength. The object of the present invention is to provide a manufacturing method that can be put into practical use.
本発明による無端薄板金属バンドの製造方法
は、まず金属薄板を円筒状に丸めてその突合わせ
端を溶接することで円筒形の中間製品を得る。そ
ののちこの中間製品をマンドレルに挿着してロー
ラ等の押圧部材で側方からしごきつつ圧延するこ
とにより圧延加工率30ないし70％が得られるよう
にしごきスピニング加工を行ない、次に上記中間
製品を輪切りにして金属バンドを得ることを特徴
とする製造方法である。
In the method for manufacturing an endless thin metal band according to the present invention, first, a thin metal plate is rolled into a cylindrical shape and the butt ends are welded to obtain a cylindrical intermediate product. After that, this intermediate product is inserted into a mandrel and rolled while being squeezed from the side with a pressing member such as a roller, so that a rolling reduction rate of 30 to 70% is obtained.Then, the above-mentioned intermediate product is rolled. This is a manufacturing method characterized by obtaining a metal band by cutting into rings.
上記方法によれば、溶接された円筒状の筒を、
しごきスピニング加工により所定の板厚まで圧延
するのでブローホール状欠陥が圧着され、欠陥と
しての重要度が小さくなる。また、溶接部を含め
て圧延加工するので軟化している部分が加工硬化
し、溶接部と母材部との機械的性質の差が実質的
になくなる。これらのことから、耐久性に優れた
金属バンドが得られる。
According to the above method, the welded cylindrical tube is
Since the plate is rolled to a predetermined thickness by ironing and spinning, blowhole-like defects are compressed and their importance as defects becomes smaller. Furthermore, since the welded part is rolled, the softened part is work-hardened, and the difference in mechanical properties between the welded part and the base metal part is substantially eliminated. Due to these factors, a metal band with excellent durability can be obtained.
また本発明における中間製品は鍔部と底部をも
たないため、スピニング加工時に多少のつかみ代
はいるものの、材料の大部分を有効利用でき、歩
留りが大幅に向上する。しかも金属薄板を円筒状
に丸めて溶接することで中間製品を得るため、従
来の金型使用の深絞り成形の場合に比べて、中間
製品の段階で板厚をかなり薄くしておくことがで
きる。従つてスピニング加工による製品板厚まで
の圧延加工率を低くすることができる。このため
靭性の低下が少なく、疲労性に好影響をもたら
す。 Furthermore, since the intermediate product of the present invention does not have a flange or a bottom, although there is some gripping allowance during spinning, most of the material can be used effectively and the yield is significantly improved. Moreover, because the intermediate product is obtained by rolling a thin metal plate into a cylindrical shape and welding it, the thickness of the intermediate product can be made considerably thinner than in the case of conventional deep drawing using a mold. . Therefore, it is possible to reduce the rate of rolling to the thickness of the product plate by spinning. Therefore, there is little decrease in toughness, which has a favorable effect on fatigue resistance.
（実施例）
第１図に示されるような幅広な金属薄板１０を
用意する。この金属薄板１０は、例えば板厚0.3
〜0.4mm位のステンレス鋼板である。但しステン
レス鋼以外の鋼種を用いることも勿論可能であ
る。上記金属薄板１０を、第２図のように円筒状
に丸めてその突合わせ端１１を溶接することによ
つて、円筒形の中間製品１２を得る。溶接の種類
は問わないが、例えばレーザ溶接か電子ビーム溶
接などを採用できる。(Example) A wide thin metal plate 10 as shown in FIG. 1 is prepared. This thin metal plate 10 has a thickness of, for example, 0.3
It is a stainless steel plate with a thickness of ~0.4mm. However, it is of course possible to use steel types other than stainless steel. A cylindrical intermediate product 12 is obtained by rolling the metal thin plate 10 into a cylindrical shape as shown in FIG. 2 and welding the butt ends 11. The type of welding does not matter; for example, laser welding or electron beam welding can be used.
以上の中間製品１２を得たのち、第３図に示さ
れるように中間製品１２を円筒（または円柱）状
のマンドレル１５に挿着し、中間製品１２の端部
をチヤツク１６で押えつつマンドレル１５と一体
に回転させて、しごきスピニング加工を行なう。
すなわち、中間製品１２をその側方から押圧部材
１７で周方向にしごきつつ、押圧部材１７を軸線
方向に相対移動させることによつて、マンドレル
１５と押圧部材１７との間で圧延が行なわれる。
押圧部材１７は、へらまたはローラを用いる。 After obtaining the above intermediate product 12, as shown in FIG. The spinning process is performed by rotating together with the iron.
That is, rolling is performed between the mandrel 15 and the pressing member 17 by moving the pressing member 17 relatively in the axial direction while pressing the intermediate product 12 in the circumferential direction with the pressing member 17 from the side.
The pressing member 17 uses a spatula or a roller.
圧延後の板厚は、VDTベルトの場合0.1ないし
0.2mm位である。そして圧延加工率が30ないし70
％の範囲に入るように、加工前の板厚と加工後の
板厚が設定される。圧延加工率は、（加工前の板
厚−加工後の板厚）÷加工前の板厚×100で表わさ
れる。なお圧延加工率を30〜70％の範囲にすれ
ば、実用上問題となるような脆性の低下はみられ
ず、従来方法に比べて疲労性に好影響が得られ
る。 The plate thickness after rolling is 0.1 to 0.1 for VDT belts.
It is about 0.2mm. And rolling rate is 30 to 70
The plate thickness before processing and the plate thickness after processing are set so that they fall within the range of %. The rolling rate is expressed as (plate thickness before processing - plate thickness after processing) ÷ plate thickness before processing x 100. Note that if the rolling reduction rate is set in the range of 30 to 70%, a decrease in brittleness that would cause a practical problem will not be observed, and a favorable effect on fatigue properties will be obtained compared to the conventional method.
そしてスピニング加工後の中間製品１２′を、
第４図に２点鎖線で示すようにスリツト加工等に
より輪切りにすることによつて、無端帯状をなす
複数本の金属バンド１ａを得る。 Then, the intermediate product 12' after the spinning process,
As shown by the two-dot chain line in FIG. 4, a plurality of endless metal bands 1a are obtained by slitting or the like into rings.
上記方法よれば、板厚0.3ないし0.4mmの溶接さ
れた円筒から、しごきスピニング加工により板厚
0.1ないし0.2mmまで圧延するので、ブローホール
状欠陥が圧着され、応力集中の発生要因が少なく
なり、欠陥としての重要度が小さくなる。また溶
接部も含めて30ないし70％の圧延加工率をかける
ので、軟化している部分が加工硬化し溶接部と母
材部との機械的性質の差がなくなるか、または減
少する。 According to the above method, from a welded cylinder with a thickness of 0.3 to 0.4 mm, the thickness of the plate is
Since it is rolled to 0.1 to 0.2 mm, blowhole-like defects are compressed, and the causes of stress concentration are reduced, making them less important as defects. In addition, since a rolling reduction rate of 30 to 70% is applied to the welded part, the softened part is work hardened and the difference in mechanical properties between the welded part and the base metal part is eliminated or reduced.
また従来の深絞り成形では鍔部や底部による歩
留りの低下が問題であつたが、上記実施例では鍔
部と底部が無いので、チヤツク１６のつかみ代が
あるにしても材料の90％以上が有効利用できるこ
とになり、歩留りの向上に貢献できる。 In addition, in conventional deep drawing forming, there was a problem of a decrease in yield due to the flange and bottom, but in the above embodiment, since there is no flange and bottom, more than 90% of the material is This means that it can be used effectively, contributing to improved yields.
また、前述したように従来の深絞り成形では最
少板厚0.5mm前後が限度であり、このため深絞り
成形後のスピニング加工で約80％の圧延加工率を
与えなければ製品板厚まで仕上がらなかつたが、
上記実施例によればこれよりも低い30ないし70％
の圧延加工率で圧延を行なうので、靭性を劣化さ
せない。そして加工硬化も期待でき、疲労寿命向
上が望める。 In addition, as mentioned above, the minimum plate thickness in conventional deep drawing is around 0.5 mm, and for this reason, it is not possible to finish the plate to the product thickness unless a rolling reduction rate of approximately 80% is applied in the spinning process after deep drawing. However,
According to the above embodiments, this is lower by 30 to 70%.
Since rolling is performed at a rolling processing rate of , the toughness does not deteriorate. Work hardening can also be expected, and fatigue life can be improved.
本発明によれば、歩留りが大幅に向上し、かつ
溶接によつて所望長さの無端バンドが容易に得ら
れ、経済的であるとともに優れた疲労寿命を発揮
する無端薄板金属バンドが得られる。
According to the present invention, the yield is greatly improved, an endless band of a desired length can be easily obtained by welding, and an endless thin sheet metal band that is economical and exhibits an excellent fatigue life can be obtained.
第１図は金属薄板の斜視図、第２図は中間製品
の斜視図、第３図はしごきスピニング加工を行な
う装置の概略図である。第４図はスピニング加工
後の中間製品を示す斜視図、第５図は積層ベルト
の概略図、第６図は第５図に示された積層ベルト
の一部の断面図である。第７図は従来のハツト形
中間製品の斜視図、第８図は従来のスピニング加
工を示す概略図、第９図は他の従来方法による金
属バンドの斜視図である。
１……積層ベルト、１ａ，１ｂ，１ｃ……金属
バンド、１０……金属薄板、１１……突合わせ
端、１２……中間製品、１５……マンドレル、１
７……押圧部材。
FIG. 1 is a perspective view of a thin metal plate, FIG. 2 is a perspective view of an intermediate product, and FIG. 3 is a schematic diagram of an apparatus for ironing and spinning. FIG. 4 is a perspective view showing an intermediate product after spinning processing, FIG. 5 is a schematic view of a laminated belt, and FIG. 6 is a sectional view of a part of the laminated belt shown in FIG. 5. FIG. 7 is a perspective view of a conventional hat-shaped intermediate product, FIG. 8 is a schematic diagram showing a conventional spinning process, and FIG. 9 is a perspective view of a metal band produced by another conventional method. 1... Laminated belt, 1a, 1b, 1c... Metal band, 10... Metal thin plate, 11... Butt end, 12... Intermediate product, 15... Mandrel, 1
7...Press member.
Claims (1)
溶接することにより両端が開口する円筒形の中間
製品を得、そののち上記中間製品をマンドレルに
挿着して押圧部材で側方からしごきつつ圧延する
ことにより、圧延加工率が30ないし70％となるよ
うにしごきスピニング加工を行ない、そののち上
記中間製品を輪切りにして金属バンドを得ること
を特徴とする無端薄板金属バンドの製造方法。 ２ 上記金属薄板に鋼板が用いられる特許請求の
範囲第１項記載の無端薄板金属バンドの製造方
法。[Claims] 1. A cylindrical intermediate product with open ends is obtained by rolling a thin metal plate into a cylindrical shape and welding the butt ends, and then inserting the intermediate product into a mandrel to produce a pressing member. An endless thin sheet metal characterized in that the intermediate product is rolled while being squeezed from the side so that the rolling rate is 30 to 70%, and then the intermediate product is sliced into rings to obtain a metal band. How to make a band. 2. The method of manufacturing an endless thin metal band according to claim 1, wherein a steel plate is used as the thin metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60019427A JPS61180631A (en) | 1985-02-04 | 1985-02-04 | Production of endless thin plate metallic band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60019427A JPS61180631A (en) | 1985-02-04 | 1985-02-04 | Production of endless thin plate metallic band |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61180631A JPS61180631A (en) | 1986-08-13 |
| JPH0324288B2 true JPH0324288B2 (en) | 1991-04-02 |
Family
ID=11998973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60019427A Granted JPS61180631A (en) | 1985-02-04 | 1985-02-04 | Production of endless thin plate metallic band |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61180631A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09267222A (en) | 1996-04-01 | 1997-10-14 | Idemitsu Petrochem Co Ltd | Manufacture of seamless metallic belt |
| JP2002147536A (en) * | 2000-11-09 | 2002-05-22 | Dymco:Kk | Metallic endless timing belt and producing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5333942A (en) * | 1976-09-10 | 1978-03-30 | Ooku Entaa Puraizu Kk | Process for fabricating automobile wheel rim of aluminum alloys |
| JPS56119608A (en) * | 1980-02-21 | 1981-09-19 | Kobe Steel Ltd | Manufacture of metallic belt |
| JPS5714430A (en) * | 1980-06-27 | 1982-01-25 | Aisin Warner Ltd | Manufacture of annular metallic band |
| JPS5886946A (en) * | 1981-11-20 | 1983-05-24 | Nissan Motor Co Ltd | Manufacture of transmission v-belt |
| JPS5985336A (en) * | 1982-11-08 | 1984-05-17 | Ringo Katsuo | Manufacture of cuttlefish fishing guide wheel barrel |
-
1985
- 1985-02-04 JP JP60019427A patent/JPS61180631A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5333942A (en) * | 1976-09-10 | 1978-03-30 | Ooku Entaa Puraizu Kk | Process for fabricating automobile wheel rim of aluminum alloys |
| JPS56119608A (en) * | 1980-02-21 | 1981-09-19 | Kobe Steel Ltd | Manufacture of metallic belt |
| JPS5714430A (en) * | 1980-06-27 | 1982-01-25 | Aisin Warner Ltd | Manufacture of annular metallic band |
| JPS5886946A (en) * | 1981-11-20 | 1983-05-24 | Nissan Motor Co Ltd | Manufacture of transmission v-belt |
| JPS5985336A (en) * | 1982-11-08 | 1984-05-17 | Ringo Katsuo | Manufacture of cuttlefish fishing guide wheel barrel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61180631A (en) | 1986-08-13 |
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