JPS6157103B2 - - Google Patents
Info
- Publication number
- JPS6157103B2 JPS6157103B2 JP14618881A JP14618881A JPS6157103B2 JP S6157103 B2 JPS6157103 B2 JP S6157103B2 JP 14618881 A JP14618881 A JP 14618881A JP 14618881 A JP14618881 A JP 14618881A JP S6157103 B2 JPS6157103 B2 JP S6157103B2
- Authority
- JP
- Japan
- Prior art keywords
- cup
- shaped material
- side wall
- pulley
- die
- 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
- 239000000463 material Substances 0.000 claims description 31
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000000748 compression moulding Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/02—Making articles shaped as bodies of revolution discs; disc wheels
- B21H1/04—Making articles shaped as bodies of revolution discs; disc wheels with rim, e.g. railways wheels or pulleys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
本発明は、カツプ状素材の周側壁に多重Ｖ溝を
備えたプーリを形成するための予備成形品を製造
する製造装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a manufacturing apparatus for manufacturing a preform for forming a pulley having multiple V-grooves on the peripheral side wall of a cup-shaped material.
最近の自動車は、発電機、冷却フアン等種々の
機器を一本のベルトにより回転させるようになつ
ているが、このベルトは大きなトルクを伝達しな
ければならないために、前記発電機等に取付けた
プーリを多重Ｖ溝付プーリにして、このプーリに
前記ベルトを巻回するようにしている。 In recent automobiles, various devices such as generators and cooling fans are rotated by a single belt, but since this belt must transmit large torque, it is necessary to attach it to the generator etc. The pulley is a pulley with multiple V grooves, and the belt is wound around this pulley.
しかして、従来の多重Ｖ溝付プーリは、一枚の
金属円板素材に連続絞り加工を施してカツプ状素
材とし、このカツプ状素材の円筒状の周側壁に多
重Ｖ溝を転造することにより形成したものであ
る。 Therefore, conventional pulleys with multiple V-grooves are made by subjecting a single metal disc material to a continuous drawing process to form a cup-shaped material, and then rolling multiple V-grooves on the cylindrical circumferential side wall of this cup-shaped material. It was formed by
この多重Ｖ溝付プーリは一枚の金属素板から成
形を開始して製品とするまでの間の加工工数が少
なく、コスト的にも安価で、しかも通常の走行時
のみを考慮すれば、トルクを伝達するときの機械
的強度も十分備えており、近時多用されている。 This multiple V-groove pulley requires less man-hours from the start of molding from a single metal plate to the finished product, and is inexpensive in terms of cost.Moreover, considering only normal driving, the torque is low. It also has sufficient mechanical strength when transmitting information, and has been widely used recently.
しかしながら、エンジンが高速回転をする場合
あるいは重荷重を受ける場合には、機械的強度が
不足する場合が生じることもあるのでプーリを複
合構造にするか、場合によつては使用する金属板
の肉厚を厚くしなければならない。 However, if the engine rotates at high speed or receives heavy loads, the mechanical strength may be insufficient, so the pulley should be made of a composite structure, or in some cases, the metal plate used may be thinner. It has to be thicker.
ところが、このような厚肉金属板を変形してプ
ーリを作る場合は、工数がかかるばかりでなく、
折曲加工にも手数を要し、種々の困難を伴なうこ
とになる。 However, making a pulley by deforming such a thick metal plate not only takes a lot of man-hours;
The bending process also requires a lot of effort and is accompanied by various difficulties.
さらに詳述すれば、第１図に示すように従来の
板金製多重Ｖ溝付プーリ（通称ポリＶプーリ）１
は、均一な肉厚のカツプ状素材に加工を施すこと
により形成したもので、ボス部２と、このボス部
２の周縁に形成した折返し部３と、この折返し部
３に連設し、Ｖ溝４を多重に形成したベルト掛け
部５と、このベルト掛け部５の先端を拡開して形
成した外周フランジ部６とからなつている。 More specifically, as shown in FIG.
is formed by processing a cup-shaped material with uniform thickness, and includes a boss part 2, a folded part 3 formed on the periphery of this boss part 2, and a V-shaped part connected to the folded part 3. It consists of a belt hanging part 5 in which multiple grooves 4 are formed, and an outer peripheral flange part 6 formed by widening the tip of this belt hanging part 5.
ところが、前記ベルト掛け部５に転造によつて
Ｖ溝４を形成すれば、このＶ溝４の谷部底壁４ａ
とベルト掛け部５の内面５ａとの間の肉厚Ｈは、
このベルト掛け部５を構成する板材の肉厚Ｔより
かなり薄くなるので、高速回転時又は重荷重時に
は強度的に耐えることができないこともある。し
たがつてこれに対処するために肉厚の厚い金属素
板を使用すれば、今度は成形加工が困難になり、
重量、材料費の増加を招来するという不都合が生
じることになる。 However, if the V-groove 4 is formed in the belt hanging portion 5 by rolling, the valley bottom wall 4a of the V-groove 4
The wall thickness H between and the inner surface 5a of the belt hanging portion 5 is:
Since it is considerably thinner than the wall thickness T of the plate material constituting the belt hanging portion 5, it may not be able to withstand high-speed rotation or heavy loads. Therefore, if a thick metal plate is used to solve this problem, it will become difficult to form the metal plate.
This results in the inconvenience of increased weight and material costs.
そこで、最近では、比較的薄肉の金属素板のベ
ルト掛け部のみを圧縮して厚肉にした予備成形品
を作り、この予備成形品のベルト掛け部となる周
側壁に転造を施すことにより多重Ｖ溝付プーリを
作るようにしたものが提案されている（特開昭56
―59546号公報）。 Therefore, recently, a preformed product is made by compressing only the belt hanging part of a relatively thin metal blank to make it thicker, and by rolling the peripheral side wall of this preformed part, which will become the belt hanging part. A pulley with multiple V grooves has been proposed (Japanese Unexamined Patent Publication No. 1983
- Publication No. 59546).
ところが、この多重Ｖ溝付プーリを製造する装
置は、ベルト掛け部となる周側壁を肉厚成形する
とき、カツプ状素材を円柱状の支持部材上に被
せ、このカツプ状素材の軸線方向から圧縮すると
ともにこのカツプ状素材を外周から複数個の転輪
により保持して所定形状に成形するようにしたも
のである。 However, when manufacturing a pulley with multiple V-grooves, a cup-shaped material is placed over a cylindrical support member and compressed from the axial direction of the cup-shaped material. At the same time, this cup-shaped material is held from the outer periphery by a plurality of rolling wheels and molded into a predetermined shape.
このように構成した装置では、前述した転輪の
加圧制御が難しいのみでなく装置全体も大型化
し、しかも前記ベルト掛け部となる周側壁に対す
る厚肉成形も閉鎖空間で行うものではなく、開放
状態の下で行なうようにしたものであるため、成
形後の肉厚も寸法精度の良いものが得られない
等、実用上種々の問題がある。 In a device configured in this way, it is not only difficult to control the pressure applied to the rolling wheels as described above, but also the entire device becomes large in size.Furthermore, the thick forming of the circumferential side wall that will become the belt hanging portion is not done in a closed space, but in an open space. Since the process is carried out under such conditions, there are various problems in practical use, such as the inability to obtain a wall thickness with good dimensional accuracy after molding.
本発明は、上述した点に鑑みてされたもので、
薄肉のカツプ状素材の周側壁を厚肉に形成した多
重Ｖ溝付プーリの予備成形品を作るに当り、プレ
ス装置の型、ポンチ等を用いて閉鎖空間を形成
し、この閉鎖空間内で前記周側壁を圧縮成形する
ように構成し、精度の良い多重Ｖ溝付プーリの予
備成形品を簡単にかつ迅速に得ることができるよ
うにした装置を提供しようとするものである。 The present invention has been made in view of the above points, and
When making a preform of a pulley with multiple V-grooves made of a thin cup-shaped material with a thick circumferential side wall, a closed space is formed using a mold of a press machine, a punch, etc., and the above-mentioned It is an object of the present invention to provide an apparatus which is configured to compression mold the circumferential side wall and which enables a highly accurate preformed product of a pulley with multiple V grooves to be obtained simply and quickly.
上記目的をを達成するために、本発明は、カツ
プ状素材の底壁ボス部の周縁に折返し部を形成
し、この折返し部に連設した周側壁の先端に外方
に拡開した外周フランジ部を設け、前記周側壁を
圧縮成形することによつて多重Ｖ溝プーリの予備
成形品を製造する製造装置において、相対的に近
接離間するホルダー及びダイと、このダイに形成
され、前記カツプ状素材の底壁ボス部及び折り返
し部を支承する型面と、この型面に対し前記カツ
プ状素材を押しつける押圧片と、前記ホルダーに
弾性部材を介して取付けられ、この弾性部材の弾
発力に抗して前記ダイとの間でカツプ状素材を押
圧するとともに前記周側壁の内側面を支承するパ
ツドと、前記ホルダーに取付けられ、前記外周フ
ランジ部の端面を加圧するポンチと、前記ホルダ
ーに取付けられたカム型により押圧作動され、前
記パツド及びポンチとともに所定肉厚を有する厚
肉周側壁を形成するための閉鎖空間を形成するノ
ーズ部を備えた芯金とを有することを特徴とする
ものである。 In order to achieve the above object, the present invention forms a folded part on the periphery of the bottom wall boss part of a cup-shaped material, and has an outer circumferential flange expanded outward at the tip of the circumferential side wall connected to the folded part. A manufacturing apparatus for manufacturing a preformed product of a multiple V-groove pulley by providing a section and compression molding the circumferential side wall, a holder and a die that are relatively close to each other; A mold surface that supports the bottom wall boss portion and the folded portion of the material, a pressing piece that presses the cup-shaped material against this mold surface, and a pressing piece that is attached to the holder via an elastic member, and is a pad that presses the cup-shaped material against the die and supports an inner surface of the peripheral side wall; a punch that is attached to the holder and presses an end surface of the outer peripheral flange; and a punch that is attached to the holder. and a core metal having a nose portion which is pressed by a cam type and forms a closed space for forming a thick circumferential side wall having a predetermined wall thickness together with the pad and punch. be.
以下、本発明の一実施例を図面に基づいて説明
する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
第２図は、本発明の一実施例を示す断面図であ
り、左半断面図は圧縮成形前の状態を、右半断面
図は圧縮成形後の状態を示している。 FIG. 2 is a sectional view showing an embodiment of the present invention, with the left half sectional view showing the state before compression molding, and the right half sectional view showing the state after compression molding.
この多重Ｖ溝付プーリの予備成形品製造装置P1
は転造によりＶ溝を形成する前までの予備成形品
を作るものである。 This multiple V-groove pulley preform manufacturing equipment P 1
In this method, a preformed product is made by rolling to form a V-groove.
この製造装置P1は全体的にはいわばプレス装置
であり、相対的に近接離間するホルダー２０及び
ダイ２２を有している。 This manufacturing apparatus P1 is generally a press apparatus, and has a holder 20 and a die 22 that are relatively close to each other and spaced apart from each other.
このダイ２２には、カツプ状素材１０の底壁ボ
ス部１３を支承する型面２２ａが形成され、この
型面２２ａ上に載置されたカツプ状素材１０はそ
の中央部が押え片１７により押圧され、位置固定
に保持されるようになつている。 This die 22 is formed with a mold surface 22a that supports the bottom wall boss portion 13 of the cup-shaped material 10, and the center portion of the cup-shaped material 10 placed on this mold surface 22a is pressed by the presser piece 17. It is designed to be held in a fixed position.
一方前記ホルダー２０の下面には前記カツプ状
素材１０の外周フランジ部１１の端面を加圧する
ポンチ１９と、このポンチ１９により支承され、
中心上部に設けたコイルばね２１により前記型面
２２に向つて弾発されたパツド１８と、後述の芯
金２３を作動させるためのカム型２４とが設けら
れている。 On the other hand, on the lower surface of the holder 20 is a punch 19 that presses the end surface of the outer peripheral flange portion 11 of the cup-shaped material 10, and is supported by the punch 19,
A pad 18 is springed toward the mold surface 22 by a coil spring 21 provided at the upper center, and a cam mold 24 for operating a core metal 23, which will be described later, is provided.
前記芯金２３は前記ダイ２２上で半径方向摺動
可能に設けられたもので、その先端にノーズ部２
３ａを有しているが、このノーズ部２３ａは前記
カム型２４によつて傾斜面２３ｂが押圧されたと
きコイルばね２５の弾発力に抗して前進し、最も
前進した位置をとつたとき、前記パツド１８及び
ポンチ１９とともに所定肉厚の周側壁１２を形成
するための閉鎖空間Ｓを形成するようになつてい
る。 The core metal 23 is provided so as to be slidable in the radial direction on the die 22, and has a nose portion 2 at its tip.
3a, when the inclined surface 23b is pressed by the cam mold 24, the nose portion 23a moves forward against the elastic force of the coil spring 25, and when it reaches the most advanced position. , together with the pad 18 and punch 19, form a closed space S for forming the circumferential wall 12 of a predetermined thickness.
すなわち、この芯金２３は前記円柱状をしたパ
ツド１８の外周全域を取り囲むように構成した複
数個の扇形をした部材からなつており、前記カム
型２４により押圧されて前進位置とると各部材が
前記パツド８の外周を囲む環状体を構成するよう
になつている。したがつて、この芯金２３がカム
型２４により押されて前進位置をとると、パツド
１８の外周を芯金２３により取り囲み、上下両面
を型面２２ａとポンチ１９とにより閉鎖した閉鎖
空間Ｓを形成することになり、この閉鎖空間Ｓ内
で周側壁１２を封止して厚肉化するようにしてい
る。 That is, the core metal 23 is composed of a plurality of fan-shaped members configured to surround the entire outer circumference of the cylindrical pad 18, and when pressed by the cam mold 24 to the forward position, each member moves. It forms an annular body surrounding the outer periphery of the pad 8. Therefore, when the core metal 23 is pushed by the cam mold 24 and assumes the forward position, the outer periphery of the pad 18 is surrounded by the core metal 23, and a closed space S is formed, which is closed on both upper and lower sides by the mold surface 22a and the punch 19. In this closed space S, the peripheral side wall 12 is sealed and thickened.
次に作用を説明する。 Next, the action will be explained.
まず、前記予備成形品製造装置P1にセツトする
カツプ状素材１０は第３図ａ〜ｃに示すような工
程を経て成形する。 First, the cup-shaped material 10 set in the preform manufacturing apparatus P1 is formed through the steps shown in FIGS. 3a to 3c.
まず、第３図ａに示すように薄肉の金属素板に
連続絞り加工を施し、開口部の周縁を押工具によ
つて外方に拡開して外周フランジ部１１を形成す
る。 First, as shown in FIG. 3a, a thin metal blank is subjected to continuous drawing processing, and the peripheral edge of the opening is expanded outward with a push tool to form the outer peripheral flange portion 11.
このカツプ状素材１０は、外周フランジ部１１
に連設した円筒状の周側壁１２を備えかつこのカ
ツプ状素材１０の底壁となるボス部１３を有して
いる。 This cup-shaped material 10 has an outer peripheral flange portion 11
It has a cylindrical circumferential wall 12 connected to the cup-shaped material 10, and a boss portion 13 which becomes the bottom wall of the cup-shaped material 10.
特に、前記周側壁１２の軸線方向の長さは、後
にこの周側壁１２を圧縮して肉厚周側壁１６（第
４図参照）を形成するときにこの肉厚周側壁１６
の肉厚を決定する重要な要素となる。 In particular, the length of the circumferential wall 12 in the axial direction is determined by the thickness of the thick circumferential wall 16 when the circumferential wall 12 is later compressed to form the thick circumferential wall 16 (see FIG. 4).
This is an important factor in determining the wall thickness.
次に、このカツプ状素材１０のボス部１３の周
縁と周側壁１２との接合部にリング状突部１４を
形成する（第３図ｂ参照）。 Next, a ring-shaped protrusion 14 is formed at the joint between the peripheral edge of the boss portion 13 of this cup-shaped material 10 and the circumferential side wall 12 (see FIG. 3b).
さらに第３図ｃに示す如く、このリング状突部
１４を押し潰して折り返し部１５を形成すれば前
記予備成形品製造装置P1にセツトするカツプ状素
材１０が完成する。 Further, as shown in FIG. 3c, by crushing this ring-shaped protrusion 14 to form a folded portion 15, the cup-shaped material 10 to be set in the preform manufacturing apparatus P1 is completed.
このカツプ状素材１０を、型面２３ａ上にセツ
トした後にホルダー２０を下げると、ポンチ１９
ともにパツド１８も下降し、前記芯金２３はカム
型２４の下降によつて半径方向内方に移動し、そ
のノーズ部２３ａが周側壁１２に接近する。 When the cup-shaped material 10 is set on the mold surface 23a and the holder 20 is lowered, the punch 19
At the same time, the pad 18 also lowers, and the core bar 23 moves radially inward due to the lowering of the cam die 24, so that its nose portion 23a approaches the circumferential wall 12.
次に、ポンチ１９の押圧面１９ａが外周フラン
ジ部１１を押圧すると、パツド１８がカツプ状素
材１０を型面２２ａに押圧し、前記周側壁１２の
内側面がパツド１８により位置規制され、外周フ
ランジ部１１がポンチ１９により加圧されること
になり、さらに折り返し部１５が型面２２ａに支
持された状態となる。したがつて前記ポンチ１９
がさらに下降すれば周側壁１２は上下方向から圧
縮され、半径方向に向つて肉が移動することにな
り、厚肉周側壁１６が形成される（第２図右半断
面図及び第４図参照）。 Next, when the pressing surface 19a of the punch 19 presses the outer peripheral flange portion 11, the pad 18 presses the cup-shaped material 10 against the mold surface 22a, the position of the inner surface of the peripheral side wall 12 is regulated by the pad 18, and the outer peripheral flange portion 11 is pressed. The portion 11 is pressurized by the punch 19, and the folded portion 15 is further supported by the mold surface 22a. Therefore, the punch 19
If it further descends, the circumferential wall 12 will be compressed from above and below, and the thickness will move in the radial direction, forming a thick circumferential wall 16 (see the right half sectional view in Fig. 2 and Fig. 4). ).
ここにおいて、この厚肉周側壁１６はパツド１
８、ポンチ１９、ノーズ部２３ａ及び型面２２ａ
によつて画成された閉鎖空間Ｓ内において成形さ
れることになるので、この厚肉周側壁１６の肉厚
はきわめて精度の良いものが得られ、後に転造に
よりこの厚肉周側壁１６に多重Ｖ溝１７（第５図
参照）を形成する場合も第１図の肉厚Ｔ及びＨに
相当する寸法が厳格に定まつた所望の多重Ｖ溝付
プーリ１８を得ることができることになる。 Here, this thick peripheral side wall 16 is
8, punch 19, nose part 23a and mold surface 22a
Since it is formed in a closed space S defined by Even when multiple V-grooves 17 (see FIG. 5) are formed, it is possible to obtain a desired multiple-V-groove pulley 18 whose dimensions corresponding to the wall thicknesses T and H in FIG. 1 are strictly defined.
しかも本実施例では、いわばプレス装置により
圧縮成形を行うことになるため、装置自体も小形
化でき、さらには外周フランジ部１１および折り
返し部１５を形成した後に押潰す加工を行うよう
にしたので、この押潰し加工も容易に行うことが
できることになる。 Moreover, in this embodiment, since the compression molding is performed using a so-called press device, the device itself can be downsized, and furthermore, since the crushing process is performed after forming the outer peripheral flange portion 11 and the folded portion 15, This crushing process can also be easily performed.
なお、加工時における芯金２３のノーズ部２３
ａの半径方向位置又はカム型２４の半径方向位置
を適宜調整又は変更すれば、厚肉周側壁１６の肉
厚を自由に変更することができ、種々のプーリ用
予備成形品を作ることができる。また、このよう
にして成形した予備成形品を用いて多重Ｖ溝を有
するプーリを作ると、Ｖ溝の谷部と厚肉周側壁１
６の内面との肉厚が十分なものを作ることがで
き、しかも金属の結晶が微細化しかつ鍛流線が切
られないので、プーリの機械的強度は大きくな
り、高速回転あるいは重荷重が加わるという条件
下で使用されるプーリでも周側壁に亀裂や破損が
生じることはない。 Note that the nose portion 23 of the core metal 23 during processing
By appropriately adjusting or changing the radial position of a or the radial position of the cam die 24, the thickness of the thick peripheral side wall 16 can be freely changed, and various preformed products for pulleys can be made. . In addition, when a pulley having multiple V grooves is made using the preformed product formed in this way, the grooves of the V grooves and the thick circumferential side wall 1
It is possible to make a pulley with sufficient wall thickness to the inner surface of the pulley, and the metal crystals are made finer and the grain flow lines are not cut, so the mechanical strength of the pulley is increased, and high speed rotation or heavy loads are applied. Even if the pulley is used under these conditions, no cracks or damage will occur on the peripheral side wall.
上述した実施例は、周側壁１２の内周面をパツ
ド１８の外周面に当接し、前述の押潰し時の肉の
内方移動を規制している。すなわち、内方規制し
つつ厚肉周側壁１６を形成するようにしたもので
あるが、本発明は、何らこれに限定されるもので
はなく、前記パツド１８の外周面と周側壁１２と
の間に隙間を形成し、かつ芯金２３が押潰し前よ
り周側壁１２に当接している状態で押潰しを開始
すれば、外方規制しつつ厚肉周側壁１６を形成す
ることもできる。 In the embodiment described above, the inner circumferential surface of the circumferential side wall 12 is brought into contact with the outer circumferential surface of the pad 18 to restrict the inward movement of the meat during the above-mentioned crushing. That is, although the thick circumferential side wall 16 is formed while restricting the inner side, the present invention is not limited to this in any way; If a gap is formed between the core metal 23 and the crushing is started in a state in which the core metal 23 is in contact with the circumferential side wall 12 before crushing, the thick circumferential side wall 16 can be formed while restricting the outward direction.
以上の説明より明らかなように、本発明によれ
ば、薄肉の金属素板をカツプ状に成形したカツプ
状素板を用いてベルト掛け部分となる周側壁を厚
肉にする場合、外周フランジ部と折り返し部を利
用して圧縮するとともにパツド、ポンチ、芯金及
び型面により形成した閉鎖空間内で行うようにし
たため、寸法精度の良い厚肉周側壁を形成するこ
とができ、後にＶ溝を形成したときに、強度的に
優れたプーリを得るための基礎づけができること
になる。また前記圧縮をいわゆるプレス装置によ
り行うようにしたので、装置自体が小形化でき、
しかも安価で簡単かつ迅速に厚肉化の作業を行う
ことができることになり、特にこの種プーリのマ
スプロ生産を行う場合には、きわめて有効なもの
となる。 As is clear from the above description, according to the present invention, when the circumferential side wall that becomes the belt hanging portion is made thick using a cup-shaped blank plate formed from a thin metal blank plate, the outer circumferential flange portion Since the compression is performed using the folded part and inside the closed space formed by the pad, punch, core metal, and die surface, it is possible to form a thick peripheral side wall with good dimensional accuracy, and later form a V-groove. When formed, it will provide the basis for obtaining a pulley with excellent strength. In addition, since the compression is performed using a so-called press device, the device itself can be made smaller.
In addition, thickening work can be done easily and quickly at low cost, which is extremely effective, especially when mass-produced pulleys of this type are produced.
第１図は従来の板金製の多重Ｖ溝付プーリの縦
断面図、第２図は本発明の一実施例を示す断面
図、第３図ａ，ｂ，ｃは同実施例において用いら
れるカツプ状素材の成形過程を示す半載縦断面
図、第４図は同実施例の予備成形品を示す半載断
面図、第５図は多重Ｖ溝を有するプーリの半載断
面図である。
１０……カツプ状素板、１２……周側壁、１３
……ボス部、１５……折返し部、１６……厚肉周
側壁、１８……パツド、１９……ポンチ、２０…
…ホルダー、２１，２５……コイルばね、２２…
…ダイ、２２ａ……型面、２３……芯金、２３ａ
……ノーズ部、Ｓ……閉鎖空間。
Fig. 1 is a vertical cross-sectional view of a conventional pulley with multiple V grooves made of sheet metal, Fig. 2 is a cross-sectional view showing an embodiment of the present invention, and Fig. 3 a, b, and c are cups used in the same embodiment. FIG. 4 is a half-mounted longitudinal sectional view showing the forming process of a shaped material, FIG. 4 is a half-mounted sectional view showing a preformed product of the same example, and FIG. 5 is a half-mounted sectional view of a pulley having multiple V grooves. 10... Cup-shaped blank plate, 12... Peripheral side wall, 13
...Boss part, 15 ... Turning part, 16 ... Thick peripheral side wall, 18 ... Pad, 19 ... Punch, 20 ...
...Holder, 21, 25...Coil spring, 22...
...Die, 22a...Mold surface, 23...Core, 23a
...Nose part, S...Closed space.
Claims (1)
折返し部１５を形成し、この折返し部１５に連設
した周側壁１２の先端に外方に拡開した外周フラ
ンジ部１１を設け、前記周側壁１２を圧縮成形す
ることによつて多重Ｖ溝プーリの予備成形品を製
造する製造装置おいて、 相対的に近接離間するホルダー２０及びダイ２
２と、 このダイ２２に形成され、前記カツプ状素材１
０の底壁ボス部１３及び折り返し部１５を支承す
る型面２２と、 この型面２２に対し前記カツプ状素材１０を押
しつける押圧片１７と、 前記ホルダー２０に弾性部材２１を介して取付
けられ、この弾性部材２１の弾発力に抗して前記
ダイ２２との間でカツプ状素材１０を押圧すると
ともに前記周側壁１２の内側面を支承するパツド
１８と、 前記ホルダー２０に取付けられ、前記外周フラ
ンジ部１１の端面を加圧するポンチ１９と、 前記ホルダー２０に取付けられたカム型２４に
より押圧作動され、前記パツド１８及びポンチ１
９とともに所定肉厚を有する厚肉周側壁１６を成
形するための閉鎖空間Ｓを形成するノーズ部２３
ａを備えた芯金２３と、 を有する多重Ｖ溝付プーリの予備成形品製造装
置。[Scope of Claims] 1. A folded part 15 is formed at the periphery of the bottom wall boss part 13 of the cup-shaped material 10, and an outer peripheral flange part expanded outward at the tip of the peripheral side wall 12 connected to the folded part 15. 11, and a manufacturing apparatus for manufacturing a preformed product of a multiple V-groove pulley by compression molding the circumferential side wall 12, the holder 20 and the die 2 being relatively close to each other and spaced apart from each other.
2, formed on this die 22, the cup-shaped material 1
0, a mold surface 22 that supports the bottom wall boss portion 13 and the folded portion 15, a pressing piece 17 that presses the cup-shaped material 10 against the mold surface 22, and is attached to the holder 20 via an elastic member 21, a pad 18 that presses the cup-shaped material 10 against the die 22 against the elastic force of the elastic member 21 and supports the inner surface of the peripheral wall 12; A punch 19 that presses the end face of the flange portion 11 and a cam die 24 attached to the holder 20 are operated to press the pad 18 and the punch 1.
9 and a nose portion 23 forming a closed space S for forming a thick circumferential side wall 16 having a predetermined wall thickness.
An apparatus for manufacturing a preformed product for a pulley with multiple V grooves, comprising: a core bar 23; and a pulley with multiple V grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14618881A JPS5847534A (en) | 1981-09-18 | 1981-09-18 | Manufacture of pulley provided with multiple v-groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14618881A JPS5847534A (en) | 1981-09-18 | 1981-09-18 | Manufacture of pulley provided with multiple v-groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5847534A JPS5847534A (en) | 1983-03-19 |
| JPS6157103B2 true JPS6157103B2 (en) | 1986-12-05 |
Family
ID=15402120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14618881A Granted JPS5847534A (en) | 1981-09-18 | 1981-09-18 | Manufacture of pulley provided with multiple v-groove |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5847534A (en) |
Cited By (1)
| 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60108831U (en) * | 1983-12-27 | 1985-07-24 | 不二化学工業株式会社 | Clutch drum of centrifugal clutch |
| JPS60188657A (en) * | 1984-03-07 | 1985-09-26 | Sanshu Press Kogyo Kk | Poly-v pulley made of sheet metal and manufacturing method and apparatus for said pulley |
| JPS60227943A (en) * | 1984-04-26 | 1985-11-13 | Kanemitsu Doukou Yousetsushiyo:Goushi | Production of plateworked product having screw part |
| JPH01154842A (en) * | 1988-11-18 | 1989-06-16 | Sanshu Press Kogyo Kk | Metal plate made poly-v pulley and its manufacturing method and device |
| CN100398732C (en) * | 2002-12-17 | 2008-07-02 | 乐金电子(天津)电器有限公司 | Pulley for drum washing machine |
-
1981
- 1981-09-18 JP JP14618881A patent/JPS5847534A/en active Granted
Cited By (1)
| 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 |
|---|---|
| JPS5847534A (en) | 1983-03-19 |
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