JPH081242B2 - Pulley manufacturing method - Google Patents

Pulley manufacturing method

Info

Publication number
JPH081242B2
JPH081242B2 JP62183760A JP18376087A JPH081242B2 JP H081242 B2 JPH081242 B2 JP H081242B2 JP 62183760 A JP62183760 A JP 62183760A JP 18376087 A JP18376087 A JP 18376087A JP H081242 B2 JPH081242 B2 JP H081242B2
Authority
JP
Japan
Prior art keywords
peripheral
rim
pulley
metal
web
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
Application number
JP62183760A
Other languages
Japanese (ja)
Other versions
JPS6430970A (en
Inventor
健 松岡
Original Assignee
富士機工株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 富士機工株式会社 filed Critical 富士機工株式会社
Priority to JP62183760A priority Critical patent/JPH081242B2/en
Publication of JPS6430970A publication Critical patent/JPS6430970A/en
Publication of JPH081242B2 publication Critical patent/JPH081242B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、プーリの製造方法に関し、さらに詳しく
は、円板状の金属素材を転造して得られるプーリの製造
方法に関するものである。
TECHNICAL FIELD The present invention relates to a method for manufacturing a pulley, and more particularly to a method for manufacturing a pulley obtained by rolling a disc-shaped metal material.
[従来の技術] 例えば自動車のエンジン部からクランク軸を介してエ
アーコンディショナ用コンプレッサやパワーステアリン
グポンプなどへ回転動力を伝達するために用いるプーリ
としては、従来から鋳物製のものが知られているが、重
量が嵩む他に、重量バランスが悪くて回転むらを生じ易
い問題があった。このため、最近では鋳物製プーリに変
わるものとして、金属素材を塑性加工したプーリが使用
されるようになっている。
[Prior Art] For example, as a pulley used for transmitting rotary power from an engine section of an automobile to a compressor for an air conditioner, a power steering pump or the like via a crankshaft, a pulley made of cast metal has been conventionally known. However, in addition to increasing the weight, there is a problem that the weight balance is poor and rotation unevenness is likely to occur. For this reason, recently, as a substitute for the cast pulley, a pulley formed by plastically processing a metal material has been used.
この種のプーリとして、例えば金属素材の中央部分
(ウェブを構成する部分)を治具にクランプした状態で
金属素材を回転させる一方、この金属素材の外周端面に
すり割りローラを押し付けつつ同期回転させて、金属素
材の外周部分を板厚方向にすり割りしてリムを形成した
ものが知られている。
As this type of pulley, for example, while rotating the metal material while clamping the central part (the part that forms the web) of the metal material to the jig, synchronously rotating while pressing the slitting roller against the outer peripheral end surface of the metal material. There is known a rim formed by slitting the outer peripheral portion of a metal material in the plate thickness direction.
しかし、このプーリでは、リムの機械的強度を確保す
るためにはある程度厚い金属素材を使用する必要があ
り、この場合ウェブの方は板厚が必要以上に厚くなって
いまい、小型、軽量化を図ることが難しい問題があっ
た。
However, in order to secure the mechanical strength of the rim, it is necessary to use a metal material that is thick to some extent with this pulley. In this case, the web will not be thicker than necessary, and will be smaller and lighter. There was a problem that was difficult to address.
そこで、金属素材の外周部分をすり割りしないでリム
を形成するプーリの製造方法が、例えば、特開昭57−72
738号公報や特開昭60−188657号公報において提案され
ている。
Therefore, a method for manufacturing a pulley in which a rim is formed without slitting the outer peripheral portion of a metal material is disclosed in, for example, Japanese Patent Laid-Open No. 57-72.
It is proposed in Japanese Patent No. 738 and Japanese Patent Laid-Open No. 60-188657.
この製造方法によれば、まず円板状の金属素材を絞り
加工して有底円筒状に形成し、次いで円筒部分を軸方向
に圧縮して断面波形状にし、次いで該断面波形部分を平
坦な状態に圧潰して増肉し、この後V溝を転造加工する
か(特開昭57−72738号公報参照)、あるいは円筒部分
の外周面を適当な圧力で押し付けつつ該円筒部分を軸方
向に圧縮して増肉し、この後円筒部分の直径を縮小しつ
つV溝を転造加工する(特開昭60−188657号公報参
照)。
According to this manufacturing method, first, a disk-shaped metal material is drawn to form a cylindrical shape with a bottom, then the cylindrical portion is axially compressed into a corrugated sectional shape, and then the corrugated sectional portion is flattened. Crush into a state to increase the thickness, and then roll the V groove (see Japanese Patent Laid-Open No. 57-72738) or press the outer peripheral surface of the cylindrical portion with an appropriate pressure to axially move the cylindrical portion. Then, the V groove is rolled while the diameter of the cylindrical portion is reduced (see Japanese Patent Laid-Open No. 60-188657).
これによれば、最小許容板厚の金属素材を使用して
も、リムの板厚を増肉して必要な機械的強度を確保する
ことができる。
According to this, even if the metal material having the minimum allowable plate thickness is used, it is possible to increase the plate thickness of the rim and ensure the required mechanical strength.
[発明が解決しようとする問題点] ところが上記方法で製造されたプーリは、第10図に示
すように、リムAの両側にフランジ部B、Cが形成され
るが、いずれの場合もウェブD側のフランジBは板片を
二枚重ね合わせて二つ折りにした状態となっている(第
10図中符号Eは二つ折り部を示している)。すなわち、
特開昭57−72738号公報で提案された方法では円筒部分
を軸方向に圧縮する前か、あるいは軸方向に圧縮する際
にウェブDとリムAとの間の余った板片を二つ折りして
フランジBを形成し、また特開昭60−188657号公報で提
案された方法では円筒部分の直径を縮小しつつV溝を転
造加工する際に同様にウェブDとリムAとの間の余った
板片を二つ折りしてフランジBを形成している。
[Problems to be Solved by the Invention] However, in the pulley manufactured by the above method, flanges B and C are formed on both sides of the rim A as shown in FIG. The flange B on the side is in a state in which two plate pieces are stacked and folded in half (first
The symbol E in FIG. 10 indicates a folded portion). That is,
According to the method proposed in Japanese Patent Laid-Open No. 57-72738, the excess plate piece between the web D and the rim A is folded in two before the axial compression of the cylindrical portion or when the axial compression is performed. To form the flange B, and in the method proposed in Japanese Patent Laid-Open No. 60-188657, when the V groove is rolled while the diameter of the cylindrical portion is reduced, the gap between the web D and the rim A is similarly formed. The remaining plate piece is folded in two to form a flange B.
しかし、上記フランジBが位置する部分は、ウェブD
とリムAとの間の接合部分、すなわちリムAにかかる荷
重により大きな負担(曲げモーメント)が生じる部分で
あり、二つ折りしただけの構成では機械的強度の点で問
題があった。換言すれば、ウェブDとリムAとの接合部
分は板片を二つ折りした状態となって見掛け上肉厚が大
きそうであるが、実質的には二つ折りになった部分は強
固に接合されているわけではなく、大きな曲げモーメン
トが繰り返し作用すると、破損するおそれがあった。
However, the portion where the flange B is located is the web D
And a rim A, that is, a portion where a large load (bending moment) is generated by the load applied to the rim A, and there is a problem in terms of mechanical strength in the structure in which the fold is only folded in two. In other words, the joint portion between the web D and the rim A is in a state in which the plate piece is folded in two, and it seems that the wall thickness is apparently large, but substantially the folded portion is firmly joined. However, if a large bending moment is repeatedly applied, it may be damaged.
[発明の目的] この発明は、上述したような従来技術の問題点を解決
するためになされたもので、小型、軽量化を図ることが
できる上に、機械的強度の点でも十分に信頼性を有する
プーリの製造方法を提供することを目的としている。
[Object of the Invention] The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is possible to achieve a reduction in size and weight, and also to have sufficient reliability in terms of mechanical strength. An object of the present invention is to provide a method for manufacturing a pulley having
[発明の構成] 上記の目的を達成するために、この発明のプーリの製
造方法は、円板状の金属素材のウェブを構成する中央部
分を治具にクランプし、リムを構成する外周部分を前記
治具から突出させた状態で、前記金属素材を回転させる
と共に、前記外周部分に、アール状またはテーパ状のさ
そい込み部、このさそい込み部に連続してほぼ直角に彫
り込まれたバックアップ部およびこのバックアップ部に
連続して湾曲状に彫り込まれた増肉曲げ部とからなる窪
み部を有する増肉折り曲げ用ローラを押付けて、前記ウ
ェブと前記リムとの間の接合部分に二つ折り部が生じな
いように前記外周部分を前記中央部分に対しほぼ直角に
折り曲げると同時に、この折り曲げた外周部分の板厚
を、前記中央部分の板厚よりも1.25〜2.00倍厚くなるよ
うに増肉する増肉折り曲げ工程と、 増肉して折り曲げられた前記金属素材の外周部分に予
備成形用ローラを押し付けて、前記外周部分を平坦状ま
たは浅い波状に成形すると同時に、前記外周部分の両端
にフランジを成形する成形加工工程と、 前記成形加工工程と同時、あるいは前記成形加工後
に、前記外周部分の外周面に溝付ローラを押し付けてポ
リV溝を転造加工するV溝加工工程からなることを特徴
とする。
[Configuration of the Invention] In order to achieve the above object, the method for manufacturing a pulley of the present invention is such that a central portion of a disc-shaped metal material web is clamped by a jig and an outer peripheral portion of a rim is clamped. While the metal material is rotated in a state of being projected from the jig, the outer peripheral portion has a rounded or tapered jig portion, a backup portion continuously engraved at a substantially right angle on the jig portion, and By pressing a thickening and bending roller having a recessed portion composed of a thickened and bent portion continuously engraved in a curved shape on the backup portion, a two-folded portion is formed at a joint portion between the web and the rim. So that the outer peripheral portion is bent substantially at right angles to the central portion so that the thickness of the bent outer peripheral portion is increased by 1.25 to 2.00 times the thickness of the central portion. A thickening and bending step, and pressing a preforming roller against the outer peripheral portion of the metal material that has been thickened and bent to form the outer peripheral portion into a flat or shallow corrugated shape, and at the same time, apply flanges to both ends of the outer peripheral portion. And a V-groove processing step of rolling a poly V-groove by pressing a grooved roller against the outer peripheral surface of the outer peripheral portion at the same time as or after the molding processing. Characterize.
[作用] この発明の製造方法で得られるプーリは、リムとウェ
ブとの間の接合部分に二つ折り部が生じないようにし
て、リムの板厚がウェブの板厚よりも1.25〜2.00倍厚く
なるよう増肉していることから、前記接合部分の板厚は
リムの増肉分に応じて厚くなっており、リムにかかる荷
重によって生じる負担に十分に耐えうる。
[Operation] In the pulley obtained by the manufacturing method of the present invention, the plate thickness of the rim is 1.25 to 2.00 times thicker than the plate thickness of the web so that the folded portion does not occur at the joint between the rim and the web. Since the thickness is increased as described above, the plate thickness of the joint portion is increased according to the increased thickness of the rim, and the load generated by the load applied to the rim can be sufficiently endured.
また、この発明のプーリの製造方法は、容易にリムと
ウェブとの間の接合部分に二つ折り部が生じないように
してリムを増肉することができる。
Further, according to the method of manufacturing a pulley of the present invention, it is possible to easily increase the thickness of the rim by preventing the two-folded portion from being formed at the joint between the rim and the web.
[実施例] 以下、この発明の実施例を図に基づいて詳説する。[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings.
第1図は、この発明のプーリをポリVプーリに適用し
た一実施例を示している。この実施例のプーリ1は、ポ
リV溝2aを有するリム2をウェブ3の外周に直角に設け
て構成されている。
FIG. 1 shows an embodiment in which the pulley of the present invention is applied to a poly V pulley. The pulley 1 of this embodiment is constructed by providing a rim 2 having a poly V groove 2a at a right angle on the outer circumference of a web 3.
ここで、ウェブ3の板厚は、プーリ1の素材となる円
板状の金属素材10(第3図参照)の板厚と同じであり、
ウェブ3の機械的強度を確保するのに必要な最小限の厚
さに設定されている。一方、リム2の板厚は、金属素材
10の板厚よりも1.25〜2.00倍、好ましくは1.3〜1.90倍
厚く増肉されており、ポリV溝2aを転造加工しかつ機械
的強度を確保するのに必要な厚さに設定されている。
Here, the plate thickness of the web 3 is the same as the plate thickness of the disc-shaped metal material 10 (see FIG. 3) that is the material of the pulley 1,
It is set to the minimum thickness necessary to secure the mechanical strength of the web 3. On the other hand, the plate thickness of the rim 2 is a metal material.
The thickness is 1.25 to 2.00 times, preferably 1.3 to 1.90 times thicker than the plate thickness of 10, and is set to a thickness necessary for rolling the poly V groove 2a and ensuring mechanical strength. There is.
その理由は、リム2の板厚を金属素材10の板厚の1.25
倍よりも小さくすると、ポリV溝2aを加工しかつ必要な
機械的強度を確保することが難しくなるからであり、ま
た2.00倍よりも大きくするまでリム2を増肉加工するこ
とは実質的に困難となるからである。このようにする
と、すり割りしてリムを形成したプーリよりも軽量化し
て必要な機械的強度を確保することが可能となる。
The reason is that the thickness of the rim 2 is 1.25 of the thickness of the metal material 10.
This is because if it is made smaller than twice, it becomes difficult to process the poly V groove 2a and secure the necessary mechanical strength, and it is substantially necessary to increase the thickness of the rim 2 until it becomes larger than 2.00 times. It will be difficult. By doing so, it is possible to reduce the weight of the pulley in which the rim is formed by slitting and to secure necessary mechanical strength.
リム2を増肉する際、リム2とウェブ3との接合部分
4には二つ折り部E(第10図参照)が生じないようにし
ており、そして該接合部分4にはリム2の増肉の一部が
寄せられていて金属素材10の板厚よりも厚く形成されて
いる。
When the rim 2 is thickened, the folded portion E (see FIG. 10) is not formed at the joint portion 4 between the rim 2 and the web 3, and the thickened portion of the rim 2 is formed at the joint portion 4. A part of the metal material 10 is gathered and formed thicker than the metal material 10.
従って、リム2にかかる荷重によって大きな曲げモー
メントが作用しても十分に耐え、特開昭57−72738号公
報等で提案されたプーリよりも機械的強度を向上させる
ことが可能となる。
Therefore, even if a large bending moment acts due to the load applied to the rim 2, it is possible to sufficiently withstand the mechanical strength as compared with the pulley proposed in JP-A-57-72738.
また、リム2の両側には周方向に延びるフランジ5、
6が一体に設けられている。接合部分4側に位置する一
方のフランジ5は、リム2を平坦な状態に成形加工する
際(第6図参照)、リム2部分の余った肉を接合部分4
側に寄せて形成したものであり、従来のように板片を二
つ折り状態にして形成したもの(第10図符号B、E参
照)ではない。また、他方のフランジ6は、同じくリム
2を平坦な状態に成形加工する際、リム2の端縁を外方
に折り曲げることにより形成したものである。
Further, on both sides of the rim 2, flanges 5 extending in the circumferential direction,
6 are integrally provided. One of the flanges 5 located on the side of the joint portion 4 has the excess thickness of the rim 2 portion when the rim 2 is formed into a flat state (see FIG. 6).
It is formed close to the side, and is not formed by folding the plate piece in two as in the conventional case (see reference numerals B and E in FIG. 10). Similarly, the other flange 6 is formed by bending the end edge of the rim 2 outward when the rim 2 is molded into a flat state.
なお、ウェブ3には、第2図の例ではボール軸受等を
収納するためのハウジング7が形成されている。
In the example of FIG. 2, the web 3 is formed with a housing 7 for accommodating a ball bearing and the like.
第2図(a)乃至(c)は、ウェブ3の形状やポリV
溝2aの数を変えた変形例を示している。
2A to 2C show the shape of the web 3 and the poly V.
A modification in which the number of the grooves 2a is changed is shown.
同図(a)では、ウェブ3のハウジング7を内側に形
成した場合を示し、また同図(b)ではウェブ3のハウ
ジング7を内側に形成し、かつポリV溝2aの数を5個に
した場合を示し、また同図(c)ではウェブ3のハウジ
ング7を内側に形成し、かつポリV溝2aの数を4個にし
た場合を示している。
In the figure (a), the case where the housing 7 of the web 3 is formed inside is shown, and in the figure (b), the housing 7 of the web 3 is formed inside and the number of the poly V grooves 2a is set to five. FIG. 3C shows the case where the housing 7 of the web 3 is formed inside and the number of the poly V grooves 2a is four.
この発明のプーリ1は、第1図、第2図(a)乃至
(c)に示すものに限定されるものではなく、リム2と
ウェブ3との接合部分4に二つ折り部Eが生じないよう
にリム2を増肉加工していることが最大の特徴であり、
これ以外の構成については種々の変形が可能である。
The pulley 1 of the present invention is not limited to the one shown in FIGS. 1 and 2 (a) to (c), and the folded portion E does not occur at the joint portion 4 between the rim 2 and the web 3. The biggest feature is that the rim 2 is thickened like this,
Various modifications can be made to other configurations.
次に、第3図乃至第8図を参照しつつ上述したプーリ
1の製造方法の一実施例を説明する。
Next, an embodiment of the method for manufacturing the pulley 1 described above will be described with reference to FIGS. 3 to 8.
まず、第3図に示すように、円板状の金属素材10の中
央部を絞り加工してハウジング7を形成する。そして、
第4図に示すように、この金属素材10の中央部分10aに
連続し、リム2より内径の部分10c(ウェブ3を構成す
る部分)を治具11にクランプし、外周部分10b(リム2
を構成する部分)を該治具11から突出させた状態にし
て、治具11と共に金属素材10を回転させる。
First, as shown in FIG. 3, a housing 7 is formed by drawing a central portion of a disk-shaped metal material 10. And
As shown in FIG. 4, a portion 10c which is continuous with the central portion 10a of the metal material 10 and which has an inner diameter than the rim 2 is clamped to the jig 11 and the outer peripheral portion 10b (the rim 2).
The metal material 10 is rotated together with the jig 11 in a state in which (the part constituting the) is projected from the jig 11.
この回転する金属素材10の外周部分10bに対して増肉
曲げ用ローラ12を押し付けて同期回転させ、増肉折り曲
げ加工を行う(第5図参照)。増肉曲げ用ローラ12に
は、第4図及び第5図に示すように、アール状あるいは
テーパ状のさそい込み部13aと、該さそい込み部13aに連
続してほぼ直角に彫り込まれたバックアップ13bと、該
バックアップ13bに連続して湾曲状に彫り込まれた増肉
曲げ部13cとからなる窪み部13が設けられており、特に
増肉曲げ部13cでは二つ折り部Eを生じさせないような
曲面に形成されている。
The thickening / bending roller 12 is pressed against the outer peripheral portion 10b of the rotating metal material 10 to rotate synchronously to perform the thickening / bending process (see FIG. 5). As shown in FIGS. 4 and 5, the thickening / bending roller 12 has a rounded or tapered cutting portion 13a and a backup 13b which is continuously engraved at substantially right angles to the cutting portion 13a. And the backup 13b is provided with a recessed portion 13 consisting of a thickened bent portion 13c continuously engraved in a curved shape, and in particular, the thickened bent portion 13c has a curved surface which does not cause a double fold E. Has been formed.
増肉曲げ用ローラ12が押し付けられると、外周部分10
bがさそい込み部13aからバックアップ部13b、増肉曲げ
部13c内に順次入り込んでこれらの形状に沿って二つ折
り部Eが生じないように折り曲げられる。
When the thickening / bending roller 12 is pressed, the outer peripheral portion 10
The b is sequentially inserted into the backup portion 13b and the thickened bending portion 13c from the cutting portion 13a and is bent along these shapes so that the double-folded portion E does not occur.
増肉折曲げ部13c内では、ほぼ湾曲状でかつ軸方向に
圧縮された状態で折り曲げられることから、外周部分10
bは増肉される。このとき、外周部分10bは、位置によっ
て異なるが大体中央部分10aの板厚の1.57〜1.85倍程度
増肉され、特に部分10c寄りの部分(接合部分4)は増
肉の割合が大きくなる。この外周部分10bの増肉量は窪
み部13の形状により種々変化できる。なお、窪み部13
は、第9図(a)乃至(c)に示すように形成してもよ
い。
In the thickened bent portion 13c, since it is bent in a substantially curved shape and compressed in the axial direction, the outer peripheral portion 10
b is thickened. At this time, the outer peripheral portion 10b is increased in thickness by about 1.57 to 1.85 times the plate thickness of the central portion 10a, although it varies depending on the position, and particularly in the portion near the portion 10c (joint portion 4), the increase in thickness is large. The amount of increase in the thickness of the outer peripheral portion 10b can be variously changed depending on the shape of the recess 13. In addition, the depression 13
May be formed as shown in FIGS. 9 (a) to 9 (c).
このようにして増肉折り曲げ加工したら、第6図に示
すように、成形加工を行う。これには、まず治具11の一
部材11a(第5図参照)を傾斜面11bを有する他の部材11
cと交換し、そして該傾斜面11cと、治具本体11dの傾斜
面11eと合致する傾斜面14a、14bを有した予備成形ロー
ラ14を外周部分10bに押し付けて同期回転させ、外周部
分10bを平坦な状態に成形加工する。このとき、傾斜面1
1bと14aでフランジ5を形成し、また傾斜面11eと14bで
フランジ6を形成する。
After the thickening and bending process, the forming process is performed as shown in FIG. First, one member 11a (see FIG. 5) of the jig 11 is replaced with another member 11 having an inclined surface 11b.
The preforming roller 14 having the inclined surface 11c and the inclined surfaces 14a and 14b that match the inclined surface 11e of the jig body 11d is pressed against the outer peripheral portion 10b to rotate synchronously, and the outer peripheral portion 10b is replaced. Forming into a flat state. At this time, slope 1
The flanges 1b and 14a form the flange 5, and the inclined surfaces 11e and 14b form the flange 6.
成形加工後は、第7図に示すように、外周面にポリV
溝2aと合致するV溝15aを有した仕上げ成形ローラ(V
溝付ローラ)15を外周部分10bに押し付けて同期回転さ
せると、該外周部分10bの外面にポリV溝2aが順次転造
加工される。
After molding, as shown in FIG.
Finish forming roller (V with groove 15a that matches groove 2a)
When the grooved roller) 15 is pressed against the outer peripheral portion 10b and rotated synchronously, the poly V groove 2a is sequentially rolled on the outer surface of the outer peripheral portion 10b.
このようにして、第1図に示すプーリ1が製造され
る。このプーリ1は前述した如く、リム2とウェブ3と
の間の接合部分4に二つ折り部Eが生じることなく、リ
ム2が増肉されている。
In this way, the pulley 1 shown in FIG. 1 is manufactured. As described above, in the pulley 1, the rim 2 is thickened without forming the two-folded portion E at the joint portion 4 between the rim 2 and the web 3.
なお、第8図に示すように、成形加工と同時に浅い波
状のポリV溝2aの予備転造加工を行い、この後第7図に
示すように転造加工してもよい。
Incidentally, as shown in FIG. 8, the shallow V-shaped poly V groove 2a may be pre-rolled at the same time as the forming process, and thereafter, the rolling process may be performed as shown in FIG.
また、成形加工後に、まず第8図に示すように浅い波
状の予備転造加工を行い、その後第7図に示すように転
造加工してもよい。
Further, after the forming process, first, a shallow corrugated preliminary rolling process as shown in FIG. 8 may be performed, and then the rolling process may be performed as shown in FIG. 7.
上述した製造方法では、外周部分10bの折り曲げと増
肉を同時に行うことから絞り加工(本発明の折り曲げ加
工に相当する)した後、増肉加工する従来の製造方法
(特開昭57−72738号公報や特開昭60−188657号公報参
照)に比して製造工程を削減することができる。
In the above-mentioned manufacturing method, since the outer peripheral portion 10b is bent and the thickness is increased at the same time, the conventional manufacturing method is performed in which the thickness is increased after the drawing process (corresponding to the bending process of the present invention). It is possible to reduce the number of manufacturing steps as compared with the publication and JP-A-60-188657).
[発明の効果] 以上のようにこの発明によれば、さそい込み部、バッ
クアップ部および増肉曲げ部を有する増肉折り曲げ用ロ
ーラを用いてウェブの板厚を元の金属素材の板厚より1.
25〜2.00倍厚くなるように増肉するので、リムとウェブ
との間の接合部に二つ折り部が生じることがない。
[Effects of the Invention] As described above, according to the present invention, the thickness of the web is made smaller than that of the original metal material by using the thickening / folding roller having the cutting portion, the backup portion, and the thickening / bending portion. .
Since the thickness is increased to be 25 to 2.00 times thicker, no bi-fold is formed at the joint between the rim and the web.
また、リムはポリV溝を転造加工するに十分な厚みに
増肉されるのであるから、元の金属素材はウェブに必要
な機械的強度を確保する最小許容板厚のものを使用する
ことができる。そして、その増肉割合は金属素材の外周
部分の長さで制御可能であり、金属素材に板厚の薄いも
のを使用することができ、このため軽量化の他に材料コ
ストを低廉化することも可能である。
Also, since the rim is thickened enough to roll the poly V groove, the original metal material should be the one with the minimum allowable plate thickness that ensures the mechanical strength required for the web. You can The thickness increase ratio can be controlled by the length of the outer peripheral portion of the metal material, and a thin metal material can be used. Therefore, in addition to weight reduction, material cost can be reduced. Is also possible.
また、リムとウェブとの接合部分に二つ折り部が生じ
ないようにリムを増肉することから、接合部分の強度的
な不安もなく、従来のプーリに比して機械的強度の信頼
性を向上させることができる。
In addition, since the rim is thickened so that the folded portion does not form at the joint between the rim and the web, there is no concern about the strength of the joint, and the mechanical strength is more reliable than conventional pulleys. Can be improved.
また、この発明のプーリの製造方法によれば、上述の
ような機械的強度の信頼性のあるプーリを板厚の薄い素
材から一貫した転造成形により効率的に製造することが
でき、また従来の製造方法に比して工程数を削減でき
て、製造コストを低廉化することも可能となる。
Further, according to the method for manufacturing a pulley of the present invention, a pulley having the above-described mechanical strength and reliability can be efficiently manufactured from a material having a small plate thickness by consistent rolling and molding. It is possible to reduce the number of steps as compared with the manufacturing method described above, and it is possible to reduce the manufacturing cost.
【図面の簡単な説明】[Brief description of drawings]
第1図はこの発明の製造方法で得られるプーリの一実施
例を示す部分断面図であり、また第2図(a)乃至
(c)は他の変形例を示す部分断面図であり、また第3
図乃至第7図はこの発明のプーリの製造方法の一実施例
を示す工程説明図で、第3図は金属素材の部分断面図、
第4図はクランプ状態を示す説明図、第5図は増肉折り
曲げ工程を示す説明図、第6図は成形加工を示す説明
図、第7図は転造工程を示す説明図であり、また第8図
は他の変形例を示す工程説明図であり、また第9図
(a)(b)(c)は窪み部13の他の変形例を示す部分
断面図であり、また第10図は従来の製造方法で製造され
たプーリの部分断面図である。 1……プーリ、2……リム 2a……ポリV溝、3……ウェブ 4……接合部分、10……金属素材 10a……中央部分、10b……外周部分 10c……リム形成部より内径の部分 11……治具、12……増肉曲げ用ローラ 14……予備成形ローラ 15……V溝付きローラ(仕上げ成形ローラ) E……二つ折り部
FIG. 1 is a partial sectional view showing an embodiment of a pulley obtained by the manufacturing method of the present invention, and FIGS. 2 (a) to 2 (c) are partial sectional views showing other modified examples. Third
FIG. 7 to FIG. 7 are process explanatory views showing an embodiment of the method for manufacturing a pulley of the present invention, and FIG. 3 is a partial sectional view of a metal material,
FIG. 4 is an explanatory view showing a clamped state, FIG. 5 is an explanatory view showing a thickening and bending step, FIG. 6 is an explanatory view showing a forming process, and FIG. 7 is an explanatory view showing a rolling step. FIG. 8 is a process explanatory view showing another modified example, and FIGS. 9 (a), (b), and (c) are partial cross-sectional views showing another modified example of the recessed portion 13, and FIG. FIG. 6 is a partial cross-sectional view of a pulley manufactured by a conventional manufacturing method. 1 ... Pulley, 2 ... Rim 2a ... Poly V groove, 3 ... Web 4 ... Joining part, 10 ... Metal material 10a ... Center part, 10b ... Outer peripheral part 10c ... Inner diameter from rim forming part Part 11 …… Jig, 12 …… Roller for thickening and bending 14 …… Preliminary forming roller 15 …… V grooved roller (finish forming roller) E …… Folded part

Claims (1)

    【特許請求の範囲】[Claims]
  1. 【請求項1】円板状の金属素材のウェブを構成する中央
    部分を治具にクランプし、リムを構成する外周部分を前
    記治具から突出させた状態で、前記金属素材を回転させ
    ると共に、前記外周部分に、アール状またはテーパ状の
    さそい込み部、このさそい込み部に連続してほぼ直角に
    彫り込まれたバックアップ部およびこのバックアップ部
    に連続して湾曲状に彫り込まれた増肉曲げ部とからなる
    窪み部を有する増肉折り曲げ用ローラを押付けて、前記
    ウェブと前記リムとの間の接合部分に二つ折り部が生じ
    ないように前記外周部分を前記中央部分に対しほぼ直角
    に折り曲げると同時に、この折り曲げた外周部分の板厚
    を、前記中央部分の板厚よりも1.25〜2.00倍厚くなるよ
    うに増肉する増肉折り曲げ工程と、 増肉して折り曲げられた前記金属素材の外周部分に予備
    成形用ローラを押し付けて、前記外周部分を平坦状また
    は浅い波状に成形すると同時に、前記外周部分の両端に
    フランジを成形する成形加工工程と、 前記成形加工工程と同時、あるいは前記成形加工後に、
    前記外周部分の外周面に溝付ローラを押し付けてポリV
    溝を転造加工するV溝加工工程からなることを特徴とす
    るプーリの製造方法。
    1. A metal material is rotated while the central portion of a disc-shaped metal material web is clamped by a jig, and an outer peripheral portion of a rim is projected from the jig. In the outer peripheral portion, a rounded or tapered ridged portion, a backup portion continuously engraved at a substantially right angle to the ridged portion, and a thickened bent portion continuously engraved in a curved shape in the backup portion. By pressing a thickening and folding roller having a dented portion, the outer peripheral portion is bent at a substantially right angle to the central portion so that a double-folded portion does not occur at the joint between the web and the rim. , A thickening and bending step of increasing the thickness of the bent outer peripheral portion to be 1.25 to 2.00 times thicker than the thickness of the central portion, and the thickening and bending of the metal material A preforming roller is pressed against the peripheral portion to form the outer peripheral portion into a flat or shallow wavy shape, and at the same time, a forming step of forming flanges at both ends of the outer peripheral portion, simultaneously with the forming step, or the forming step. After processing,
    By pressing a grooved roller against the outer peripheral surface of the outer peripheral portion, the poly V
    A method for manufacturing a pulley, comprising a V-groove processing step of rolling a groove.
JP62183760A 1987-07-24 1987-07-24 Pulley manufacturing method Expired - Fee Related JPH081242B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62183760A JPH081242B2 (en) 1987-07-24 1987-07-24 Pulley manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62183760A JPH081242B2 (en) 1987-07-24 1987-07-24 Pulley manufacturing method

Publications (2)

Publication Number Publication Date
JPS6430970A JPS6430970A (en) 1989-02-01
JPH081242B2 true JPH081242B2 (en) 1996-01-10

Family

ID=16141495

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62183760A Expired - Fee Related JPH081242B2 (en) 1987-07-24 1987-07-24 Pulley manufacturing method

Country Status (1)

Country Link
JP (1) JPH081242B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010201482A (en) * 2009-03-05 2010-09-16 Nihon Isued Corp Method of manufacturing rotor for electromagnetic clutch

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994019126A1 (en) * 1993-02-22 1994-09-01 Sanshu Press Industry Co., Ltd. Method of pressure intensifying drawing by rotary molding and apparatus therefor
KR100294734B1 (en) * 1996-07-10 2001-09-17 가부시끼가이샤가네미쯔 Sheet metal having a circumferential wall and a method for increasing the thickness of the circumferential wall
US7017465B2 (en) 2002-07-29 2006-03-28 L.S. Starrett Company Cutting tool with grooved cutting edge
KR100941225B1 (en) * 2004-12-10 2010-02-10 가부시끼가이샤가네미쯔 Method of manufacturing sheet metal back face pulley

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07213B2 (en) * 1985-10-11 1995-01-11 富士機工株式会社 Molding method for multi-threaded V-ply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010201482A (en) * 2009-03-05 2010-09-16 Nihon Isued Corp Method of manufacturing rotor for electromagnetic clutch

Also Published As

Publication number Publication date
JPS6430970A (en) 1989-02-01

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