JPH0220342B2 - - Google Patents
Info
- Publication number
- JPH0220342B2 JPH0220342B2 JP60145249A JP14524985A JPH0220342B2 JP H0220342 B2 JPH0220342 B2 JP H0220342B2 JP 60145249 A JP60145249 A JP 60145249A JP 14524985 A JP14524985 A JP 14524985A JP H0220342 B2 JPH0220342 B2 JP H0220342B2
- Authority
- JP
- Japan
- Prior art keywords
- groove
- poly
- forming
- mold
- cup
- 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
- 238000000465 moulding Methods 0.000 claims description 49
- 239000000463 material Substances 0.000 claims description 37
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 230000008719 thickening Effects 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 12
- 239000007769 metal material Substances 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 19
- 239000002184 metal Substances 0.000 description 15
- 238000005096 rolling process Methods 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 9
- 230000000630 rising effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
Landscapes
- Pulleys (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はＶ溝およびポリＶ溝を備えた板金製
Ｖプーリの製造方法に関し、さらに詳しくは、周
壁部の基板部側にＶ溝、および周壁部にこのＶ溝
に並設して所定ピツチで並ぶ複数のポリＶ溝をそ
れぞれに形成してなる板金製Ｖプーリの製造方法
に係るものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method of manufacturing a sheet metal V pulley having a V groove and a poly V groove, and more specifically, a V groove and a poly V groove on the substrate side of the peripheral wall. The present invention relates to a method of manufacturing a sheet metal V pulley in which a plurality of poly V grooves are formed in the peripheral wall portion in parallel with the V groove and lined up at a predetermined pitch.
近時、ベルトによる強力で確実性に優れた伝動
手段として、張架方向に沿う複数のＶ形突条を、
内面側に所定ピツチで平行に突設した、いわゆる
ポリＶベルトを用い、このポリＶベルトを１組の
対向されるポリＶプーリのポリＶ溝間に張架させ
た構成が多く利用されており、このポリＶベルト
による動力伝達に使用されるポリＶプーリ、特に
板金素材を成形加工してなるポリＶプーリの開発
が盛んである。また一方、このポリＶベルト伝動
に併せて、同一Ｖプーリにより通常のＶベルト伝
動をもなし得るようにした２系統の伝動手段も利
用されていて、この場合のＶプーリには、Ｖ溝と
ポリＶ溝とを併設した複合形式による板金製プー
リ、すなわちＶ溝およびポリＶ溝を備えた板金製
Ｖプーリが使用されている。
Recently, as a powerful and reliable transmission means using belts, multiple V-shaped protrusions along the tension direction have been developed.
A commonly used configuration is to use a so-called poly V belt that protrudes parallel to the inner surface at a predetermined pitch, and to stretch this poly V belt between the poly V grooves of a pair of opposing poly V pulleys. Poly V pulleys used for power transmission by poly V belts, particularly poly V pulleys formed by molding sheet metal materials, are being actively developed. On the other hand, in addition to this poly V-belt transmission, two systems of transmission means are also used in which the same V-pulley can also perform normal V-belt transmission, and in this case, the V-pulley has a V-groove and a A composite type sheet metal pulley with a poly V groove is used, that is, a sheet metal V pulley with a V groove and a poly V groove.
こゝでこのようにＶベルトとポリＶベルトを併
用した伝動構成に適用される板金製Ｖプーリ、す
なわちＶ溝およびポリＶ溝を備えた板金製Ｖプー
リを使用する場合にあつて、駆動力の強力かつ確
実で円滑な伝動を得るためには、それぞれに板金
素材を塑性成形して形成するＶ溝とポリＶ溝のう
ち、特にポリＶベルトの各Ｖ形突条を係合させる
ところの、相互に並設される複数条のポリＶ溝に
関して、そのポリＶ溝自体の溝巾および溝径、な
らびにポリＶ溝相互のピツチ間隔などにつき、こ
れを5/100mm程度までの高精度に仕上げる必要が
あり、しかもこの高精度な複数条のポリＶ溝を、
通常のＶ溝と併せて形成しなければならないため
に、これらのＶ溝、ポリＶ溝の両者それぞれの塑
性成形に伴なつて、素材内部に生ずる成形応力、
残留応力などが相互に影響し合い、両溝の成形寸
法などに狂いをきたす惧れがあり、殊に高精度で
あることを信条とする複数条のポリＶ溝相互の成
形加工が極めて困難になるもので、結果的には良
好な駆動力伝動をなし得なくなるなどの問題点が
あつた。
Here, when using a sheet metal V pulley that is applied to a transmission configuration that uses both a V belt and a poly V belt, that is, a sheet metal V pulley equipped with a V groove and a poly V groove, the driving force In order to obtain strong, reliable, and smooth transmission, between the V grooves and poly V grooves formed by plastic forming sheet metal materials, it is especially important to Regarding multiple poly V grooves that are arranged in parallel, the width and diameter of the poly V grooves themselves, as well as the pitch spacing between the poly V grooves, are finished to a high precision of approximately 5/100 mm. This high-precision multi-strip poly V groove is necessary.
Since these V-grooves and poly V-grooves must be formed in conjunction with each other, molding stress that occurs inside the material as a result of plastic forming of both the V-groove and the poly V-groove,
There is a risk that the residual stress and other factors will affect each other, causing deviations in the molding dimensions of both grooves, making it extremely difficult to mold multiple poly V-grooves that require high precision. As a result, there were problems such as failure to achieve good driving force transmission.
この発明は従来のこのような問題点に鑑み、Ｖ
溝およびポリＶ溝を併有する板金製Ｖプーリを、
板金素材から可及的簡単かつ容易に、しかも高精
度に成形加工して構成させるための、量産性に優
れた製造方法を提供することを目的とし、特にＶ
溝形成後に、あらためてポリＶ溝を形成するとき
の、各溝相互間の影響を排除し得るようにすると
共に、ポリＶ溝自体の複数条に亘る並設形成を容
易に行ない得るようにしたものである。
In view of these conventional problems, this invention
A sheet metal V pulley with grooves and poly V grooves,
The purpose is to provide a manufacturing method with excellent mass productivity, in which sheet metal materials can be molded and constructed as simply and easily as possible with high precision.
When re-forming poly V grooves after groove formation, it is possible to eliminate the influence between each groove, and it is also possible to easily form multiple lines of poly V grooves in parallel. It is.
すなわち、この発明の製造方法は、板金素材を
深絞り成形して、基板部と周壁部からなるカツプ
状素材を形成させるカツプ状素材形成工程と、
前記カツプ状素材の周壁部に段部を形成して、
周壁部を基板部側のＶ溝成形部と開口縁部側のポ
リＶ溝成形部とに区分させる段部形成工程と、
前記ポリＶ溝成形部を厚肉化相当分だけ外側に
撓曲させて膨出部を形成させる厚肉化予備形成工
程と、
前記Ｖ溝成形部にＶ溝を形成させるＶ溝形成工
程と、
前記Ｖ溝形成工程によつてＶ溝成形部にＶ溝が
形成された部分を外側から外押え成形型の環状の
突出保持成形部で包含し、該突出保持成形部と内
嵌させた成形型とで前記段部の基部を挟着保持さ
せた状態で、該突出保持成形部とポリＶ溝成形部
の外周側からの成形ローラとにより、前記段部と
前記ポリＶ溝成形部の基部側を絞り込んで、先端
が突出保持成形部側に傾く２重折り返し状のフラ
ンジ部を形成するとともに、前記内嵌させた成形
型とポリＶ溝成形部の外周側からの成形ローラに
より、前記膨出部を圧扁して、ポリＶ溝成形部を
撓曲度合対応に厚肉化させる厚肉化形成工程と、
前記Ｖ溝形成工程によつてＶ溝成形部にＶ溝が
形成された部分を外側から外押え成形型の環状の
突出保持成形部で包含させ、かつ前記段部の基部
を前記外押え成形型の環状の突出保持成形部と内
嵌させた成形型とで挟着保持させた状態で、前記
厚肉化されたポリＶ溝成形部に複数条からなるポ
リＶ溝を並設して形成させるポリＶ溝形成工程と
を、備えるさせるようにしている。 That is, the manufacturing method of the present invention includes a step of forming a cup-shaped material consisting of a substrate portion and a peripheral wall portion by deep drawing a sheet metal material, and forming a stepped portion on the peripheral wall portion of the cup-shaped material. do,
Step forming step of dividing the peripheral wall portion into a V-groove molded portion on the substrate side and a poly V-groove molded portion on the opening edge side, and bending the poly V-groove molded portion outward by an amount corresponding to the increased thickness. a thickening pre-formation step of forming a bulge in the V-groove molded portion; a V-groove formation step of forming a V-groove in the V-groove molded portion; and a V-groove formed in the V-groove molded portion by the V-groove formation step. The protruding portion is covered from the outside by an annular protruding holding molding part of an external pressing mold, and the protruding part is held between the protruding holding molding part and the mold fitted inside, and the protruding part is The holding molding part and the forming roller from the outer peripheral side of the poly V groove molding part narrow down the step part and the base side of the poly V groove molding part to form a double folded shape with the tip protruding and tilting toward the holding molding part. While forming a flange part, the bulging part is compressed by the mold fitted inside and a forming roller from the outer circumferential side of the poly V groove molded part, so that the poly V groove molded part corresponds to the degree of bending. a thickening forming step of increasing the thickness; and a portion in which a V groove is formed in the V groove molded portion by the V groove forming step is included from the outside with an annular protruding holding molding portion of an external pressing mold, and While the base of the stepped portion is held between the annular protruding holding molding part of the external pressing mold and the mold fitted therein, a plurality of strips are inserted into the thickened poly V-groove molding part. A poly V-groove forming step is provided in which poly V-grooves are formed in parallel.
以下この発明に係るＶ溝およびポリＶ溝を備え
た板金製Ｖプーリの製造方法の一実施例につき、
第１図ないし第６図を参照して詳細に説明する。
The following is an example of a method for manufacturing a sheet metal V pulley equipped with a V groove and a poly V groove according to the present invention.
This will be explained in detail with reference to FIGS. 1 to 6.
第１図ａないしｆはこの実施例に係る板金製Ｖ
プーリの製造方法の板金素材から製品に至る主要
段階毎の加工態様をそれぞれに示す半截断面図で
ある。 Figures 1a to 1f show sheet metal Vs according to this embodiment.
FIG. 3 is a half-cut sectional view showing processing modes at each main stage of the pulley manufacturing method from sheet metal material to product.
すなわち、まずこの第１図において、この実施
例方法の場合には、所定厚さの板金素材を深絞り
成形して、基板部１１と周壁部１２からなるカツ
プ状素材１を形成させるカツプ状素材形成工程
（同図ａ）と、このカツプ状素材１の周壁部１２
に、基部２１にも段付き部を有する段部２３を形
成して、同周壁部１２を基板部１１側のＶ溝成形
部１４と、開口縁部１２ａ側のポリＶ溝成形部１
５とに区分させる段部形成工程（同図ｂ）と、前
記ポリＶ溝成形部１５を厚肉化相当分だけ外側に
撓曲して膨出部１６を形成させる厚肉化予備形成
工程（同図ｃ）と、前記周壁部１２のＶ溝成形部
１４に対して、Ｖ溝３１を形成させるＶ溝形成工
程（同図ｄ）と、前記膨出部１６を圧扁し、その
撓曲度合に対応して厚肉化されたポリＶ溝成形部
１７を形成させる厚肉化形成工程（同図ｅ）と、
前記厚肉化されたポリＶ溝成形部１７に対して、
相互に並設される複数条のポリＶ溝４１を形成さ
せるポリＶ溝形成工程（同図ｆ）とを順次に有
し、これらの各工程により板金素材を加工成形し
て、目的とするＶ溝３１およびポリＶ溝４１を備
えた板金製Ｖプーリ１００を製造するのである。 That is, in the case of this embodiment method, first, in FIG. 1, a cup-shaped material 1 is formed by deep drawing a sheet metal material of a predetermined thickness to form a cup-shaped material 1 consisting of a substrate portion 11 and a peripheral wall portion 12. Forming process (a in the same figure) and peripheral wall portion 12 of this cup-shaped material 1
In addition, a stepped portion 23 having a stepped portion is also formed on the base 21, and the peripheral wall portion 12 is connected to the V-groove molded portion 14 on the substrate portion 11 side and the poly V-groove molded portion 1 on the opening edge 12a side.
5 (FIG. 5B); and a thickening preforming step (FIG. 5B) in which the poly V-groove molded portion 15 is bent outward by an amount corresponding to the thickening to form a bulge 16. (c) in the same figure, a V-groove forming step (d) in which a V-groove 31 is formed in the V-groove molded portion 14 of the peripheral wall portion 12, and a step (d) in which the bulged portion 16 is compressed and bent. A thickening forming step (e in the same figure) of forming a poly V groove molded part 17 whose thickness is increased according to the degree of thickness;
For the thickened poly V-groove molded part 17,
A poly V groove forming step (f in the same figure) in which a plurality of poly V grooves 41 are formed in parallel with each other is sequentially performed, and the sheet metal material is processed and formed through each of these steps to form the desired V groove. A sheet metal V pulley 100 having a groove 31 and a poly V groove 41 is manufactured.
また第２図は前記板金製Ｖプーリ１００同上製
造方法の一層具体的な製造工程を順次に示す断面
説明図、第３図ないし第６図は同上成形各部の詳
細を示す拡大断面図であり、各工程での詳細を次
に述べる。 Further, FIG. 2 is a cross-sectional explanatory view sequentially showing more specific manufacturing steps of the method for manufacturing the sheet metal V-pulley 100, and FIGS. 3 to 6 are enlarged cross-sectional views showing details of each part of the same molding, Details of each process are described below.
(1) カツプ状素材形成工程（第１図ａ）
このカツプ状素材形成工程では、第２図ａ１
に示すように、所定の厚さおよび外径の板金素
材を成形材料として用い、可動、固定の両内、
外絞り型１１１，１１２および押え型１１３に
より、所定の外径寸法および絞り深さ寸法に深
絞り成形して、基板部１１１と周壁部１２とか
らなるカツプ状素材１を形成させる。そしてこ
のとき、前記周壁部１２の開口縁部１２ａに
は、絞り成形に伴なつた余剰材料による鍔部１
３が残留される。(1) Cup-shaped material forming process (Fig. 1 a) In this cup-shaped material forming process, Fig. 2 a1
As shown in the figure, a sheet metal material with a predetermined thickness and outer diameter is used as a molding material, and both movable and fixed inner parts,
The cup-shaped material 1 consisting of the substrate portion 111 and the peripheral wall portion 12 is formed by deep drawing to a predetermined outer diameter and drawing depth using the outer drawing dies 111, 112 and the holding die 113. At this time, the opening edge 12a of the peripheral wall 12 has a flange 1 made of surplus material due to the drawing process.
3 remains.
(2) 段部形成工程（第１図ｂ）
この段部形成工程では、まず第２図ｂ１に示
すように、第１、第２の相互に重合された内押
え型２１１，２１２に、前記カツプ状素材１を
嵌合保持させた状態で、予備段押しローラ２１
３により、同カツプ状素材１の基板部１１側の
周壁部１２の部分を予備転造し、同部分に傾斜
部２２を成形させて、この周壁部１２を基板部
１１側のＶ溝成形部１４と、開口縁部１２ａ側
のポリＶ溝成形部１５とに区分させた傾斜部付
きカツプ状素材２ａを得る。(2) Step forming step (FIG. 1b) In this step forming step, first, as shown in FIG. With the cup-shaped material 1 fitted and held, the preliminary stage pushing roller 21
3, the portion of the peripheral wall portion 12 on the substrate portion 11 side of the cup-shaped material 1 is pre-rolled, the inclined portion 22 is formed in the same portion, and the peripheral wall portion 12 is formed into a V-groove molded portion on the substrate portion 11 side. 14 and a poly V-groove molded part 15 on the opening edge 12a side. A cup-shaped material 2a with an inclined part is obtained.
ついで第２図ｂ２に示すように、第３、第４
の相互に重合された内押え型２１４，２１５
に、この傾斜段部付きカツプ状素材２ａを同様
に嵌合保持させた状態で、仕上げ段押しローラ
２１６により、前記傾斜部２２を仕上げ転造
し、第３図にその詳細を拡大して示す通り、基
部２１にも段付き部を有する段部２３を形成さ
せて、段付きカツプ状素材２とする。 Then, as shown in Fig. 2 b2, the third and fourth
mutually polymerized inner press molds 214, 215
Then, with the cup-shaped material 2a with the inclined stepped portion similarly fitted and held, the inclined portion 22 is finished rolled by the finishing step pushing roller 216, the details of which are shown in an enlarged scale in FIG. Similarly, a stepped portion 23 having a stepped portion is also formed on the base portion 21 to form a stepped cup-shaped material 2.
すなわち、この段部形成工程においては、結
果的にカツプ状素材１の周壁部１２に段部２３
を形成することで、この周壁部１２を、基板部
１１側のＶ溝成形部１４と、段部２３を介して
これよりも大径にされた開口縁１２ａ側のポリ
Ｖ溝成形部１７とに区分させる。 That is, in this step forming step, the step 23 is formed on the peripheral wall 12 of the cup-shaped material 1.
By forming this peripheral wall portion 12, a V-groove molded portion 14 on the substrate portion 11 side and a poly V-groove molded portion 17 on the opening edge 12a side, which has a larger diameter than this through the stepped portion 23, are formed. be divided into
(3) 厚肉化予備形成工程（第１図ｃ）
この厚肉化予備形成工程では、まず第２図ｃ
１に示すように、第５、第６の相互に重合され
た内押え型３１１，３１２に、前記段部付きカ
ツプ状素材２を嵌合保持させた状態で、外絞り
型３１３により、同段部付きカツプ状素材２の
基板部１１を同心的に逆方向内側へ絞り込ん
で、周縁部所定範囲内に段違い端部３２を予備
成形させたのちに、これを第２図ｃ２に示すよ
うに、その基板部１１側にあつて、第７の外押
え型３１４と偏心された第８の内押え型３１５
とにより保持させた状態で、剪断ローラ３１６
を用い、前記ポリＶ溝成形部１５を所定寸法位
置から剪断して、前記鍔部１３、ひいては余剰
材料部分を予め除去整形させ、このようにして
段部付き粗整形カツプ状素材３ａを得る。(3) Thickening preforming process (Fig. 1c) In this thickening preforming process, first the process shown in Fig. 2c
As shown in FIG. 1, with the stepped cup-shaped material 2 fitted and held in the fifth and sixth inner pressing molds 311 and 312 which are superimposed on each other, the outer drawing mold 313 is used to hold the stepped cup-shaped material 2 in the same stage. After the base part 11 of the cup-shaped material 2 with parts is concentrically drawn inward in the opposite direction to preform the stepped end part 32 within a predetermined range of the peripheral edge, as shown in FIG. 2 c2, An eighth inner presser die 315 is located on the substrate portion 11 side and is eccentric to the seventh outer presser die 314.
Shearing roller 316 is held in place by
The poly V-groove molded part 15 is sheared from a predetermined dimensional position using a machine to remove and shape the flange part 13 and the excess material in advance, thereby obtaining a roughly shaped cup-shaped material 3a with a stepped part.
ついで前記段部付き粗整形カツプ状素材３ａ
を、第２図ｃ３に示すように、第９および第
10、第11の内および外押え型３１７および３１
８，３１９間で同心的に挟着保持させ、かつ特
に前記段部２３の保持については、同第９の内
押え型３１７の肩部３１７ａにきつちりと嵌着
させると共に、第11の外押え型３１９の肩部３
１９ａによつて強固に押圧させた状態で、外絞
り成形型３２０により前記ポリＶ溝成形部１５
を、後述する厚肉化相当分だけ外側に撓曲成形
して膨出部１６を形成させ、このようにして段
部、膨出部付き粗整形カツプ状素材３ｂを得
る。 Next, the roughly shaped cup-shaped material 3a with the stepped portion
As shown in Figure 2 c3, the 9th and 9th
10, No. 11 inner and outer press molds 317 and 31
8 and 319 concentrically, and in particular, to hold the stepped portion 23, the shoulder portion 317a of the ninth inner presser die 317 is tightly fitted, and the eleventh outer presser die 317 is held tightly. Shoulder 3 of type 319
19a, the poly V groove molded portion 15 is formed by the outer drawing die 320.
is bent outward by an amount corresponding to the thickening described later to form a bulge 16, thus obtaining a roughly shaped cup-shaped material 3b with stepped portions and a bulge.
(4) Ｖ溝形成工程（第１図ｄ）
このＶ溝形成工程では、まず第２図ｄ１に示
すように、前記段部、膨出部付き粗整形カツプ
状素材３ｂを、第12、第13の内、外Ｖ溝予備成
形型４１１，４１２間で同心的に挟着保持さ
せ、かつ特に前記段部２３の基部２１の保持に
ついては、同第12の内Ｖ溝予備成形型４１１の
肩部４１１ａにきつちりと嵌着させた状態で、
Ｖ溝予備成形ローラ４１３により前記Ｖ溝成形
部１４を、外周から絞り込むように予備転造し
て、同部分にＶ溝成形のための凹陥部３３を予
め形成させる。(4) V-groove forming step (Fig. 1 d) In this V-groove forming step, first, as shown in Fig. 2 d1, the roughly shaped cup-shaped material 3b with the stepped portion and the bulge portion is The shoulder of the twelfth inner V-groove preform 411 is concentrically held between the thirteen inner and outer V-groove preform molds 411 and 412, and especially for holding the base 21 of the step portion 23. With the part 411a tightly fitted,
The V-groove forming portion 14 is pre-rolled by the V-groove pre-forming roller 413 so as to be narrowed from the outer periphery, and a concave portion 33 for forming the V-groove is previously formed in the same portion.
そしてこのＶ溝成形部１４に対するＶ溝成形
のための予備転造に際しては、前記Ｖ溝予備成
形ローラ４１３の肩部４１３ａと前記第12の内
Ｖ溝予備成形型４１１の肩部４１１ａとによ
り、段部２３の基部２１を常時、圧接保持させ
るようにし、これによつて同予備転造における
塑性成形の影響が、前記ポリＶ溝成形部１５で
もある膨出部１６側に及ばないようにするので
ある。 When performing preliminary rolling for V-groove forming of this V-groove forming portion 14, the shoulder portion 413a of the V-groove preforming roller 413 and the shoulder portion 411a of the twelfth inner V-groove preforming die 411, The base 21 of the stepped portion 23 is always held under pressure, thereby preventing the influence of plastic forming in the preliminary rolling from reaching the bulging portion 16 side, which is also the poly V groove formed portion 15. It is.
ついでその後、第２図ｄ２に示すように、凹
陥部３３を予備成形させた段部、膨出部付き粗
整形カツプ状素材３ｂは、前記の場合と同様
に、第14、第15の内、外Ｖ溝仕上げ成形型４１
４，４１５間にあつて同心的に挟着保持させる
と共に、こゝでも特に前記段部２３の基部２１
については、同第14の内Ｖ溝仕上げ成形型４１
４の肩部４１４ａにきつちりと嵌着させた状態
で、Ｖ溝仕上げ成形ローラ４１６を用いてこの
凹陥部３３を、外周からより深く絞り込んで仕
上げ転造し、同凹陥部３３に対し通常のＶ溝３
１を成形させて、Ｖ溝付き粗整形カツプ状素材
３とする。 Subsequently, as shown in FIG. 2 d2, the roughly shaped cup-shaped material 3b with the stepped and bulged portions preformed with the concave portion 33 is formed into the 14th and 15th portions, as in the above case. Outer V groove finishing mold 41
4 and 415 and concentrically sandwiched and held, and here also, in particular, the base 21 of the stepped portion 23
Regarding, the 14th inner V groove finishing mold 41
4, the concave part 33 is narrowed deeper from the outer periphery using a V-groove finish forming roller 416 to finish roll the concave part 33 in a normal manner. V groove 3
1 is molded to form a roughly shaped cup-shaped material 3 with a V-groove.
そしてまたこゝでも前記と同様に、このＶ溝
成形部１４に対するＶ溝３１の成形のための仕
上げ転造に際しては、前記Ｖ溝仕上げ成形ロー
ラ４１６の肩部４１６ａと前記第14の内Ｖ溝仕
上げ成形型４１４の肩部４１４ａとにより、段
部２３の基部２１を常時、圧接保持させるよう
にして、同仕上げ転造における塑性成形時の成
形圧力、ならびに成形後の残留圧力などの影響
が、前記膨出部１６側、ひいてはポリＶ溝成形
部１５側に及ばないようにするのであり、この
ようにして前記Ｖ溝成形部１４に通常のＶ溝３
１を成形させた状態では、第４図にその詳細を
拡大して示した通り、同Ｖ溝成形部１４が、前
記基板部１１の段違い端部３２と段部２３の基
部２１との間で、Ｖ字形に曲げ込まれると共
に、同段違い端部３２側では二重に折り返し補
強されて、所定形状寸法のＶ溝３１を所期通り
に高精度で形成し得るのである。 Here again, in the same manner as described above, when finishing rolling for forming the V groove 31 on the V groove forming portion 14, the shoulder portion 416a of the V groove finishing forming roller 416 and the fourteenth inner V groove are The base 21 of the step part 23 is always held in pressure contact with the shoulder part 414a of the finishing mold 414, so that the influence of forming pressure during plastic forming and residual pressure after forming in the finishing rolling is reduced. This prevents the bulging portion 16 side, and ultimately the poly V groove molded portion 15 side, from reaching the V groove molded portion 14.
1, the V-groove molded part 14 is formed between the stepped end 32 of the base plate 11 and the base 21 of the stepped part 23, as shown in an enlarged detail in FIG. , is bent into a V-shape, and is double-folded and reinforced on the side of the end portion 32 at the same level, so that the V-groove 31 having a predetermined shape and size can be formed with high precision as expected.
(5) 厚肉化形成工程（第１図ｅ）
この厚肉化形成工程では、まず第２図ｅ１に
示す示すように、第１ポリＶ溝予備成形型５１
１に前記Ｖ溝付き粗整形カツプ状素材３を嵌合
させ、かつその基板部１１およびＶ溝３１部を
外側から第16の外押え型５１２により、またそ
のＶ溝３１を包含するようにして、段部２３の
基部２１を同様に外側から外押え成形型５１３
によりそれぞれ同心的に挟着保持させると共
に、こゝでも特に前記段部２３の基部２１につ
いては、第１ポリＶ溝予備成形型５１１の肩部
５１１ａと、外押え成形型５１３の突出保持成
形部５１３ａとの間に、きつちりと強固に挟圧
させた状態とし、かつまた前記膨出部１６につ
いては、その開口端縁、つまり前記した開口縁
部１２ａを第１ポリＶ溝予備成形型５１１の突
当て段部５１１ｂに突当て支持させておく。(5) Thickening forming process (Fig. 1 e) In this thickening forming process, first, as shown in Fig. 2 e1, the first poly V groove preforming mold 51 is
1, the roughly shaped cup-shaped material 3 with a V groove is fitted onto the base plate 11, and the V groove 31 is held from the outside by a 16th external holding die 512 so as to encompass the V groove 31. , the base 21 of the stepped portion 23 is similarly pressed from the outside by an external pressing mold 513.
In particular, regarding the base 21 of the stepped portion 23, the shoulder portion 511a of the first poly V-groove preforming mold 511 and the protruding holding molding portion of the outer pressing mold 513 513a, and the opening edge of the bulging portion 16, that is, the opening edge 12a described above, is placed in the first poly V groove preforming mold 511. It is supported by abutting against the abutting step portion 511b.
ついでこの状態のまゝ、厚肉化ローラを兼ね
る第１ポリＶ溝予備成形ローラ５１４により、
前記膨出部１６の膨出突端部を押圧するが、
こゝではこの膨出部１６の開口縁部１２ａを突
当て段部５１１ｂに突当て支持させてあるため
に、同ローラ５１４のローラ面５１４ａによ
り、同膨出部１６が次第に転造圧扁され塑性流
動成形されて、同部での所定厚さによる厚肉化
が達成されると共に、同時に同ローラ５１４の
突出された成形面５１４ｂにより、膨出形成さ
れたポリＶ溝成形部１７の基部側を絞り込むよ
う第１予備転造をして、先端が突出保持成形部
５１３ａ側に傾く２重折り返し状のフランジ部
ＢとポリＶ溝成形のための成形基準点となる基
準溝部４２を予め形成させ、このようにしてＶ
溝付き厚肉化カツプ状素材４ａを得る。 Then, in this state, the first poly V-groove preforming roller 514, which also serves as a thickening roller,
The bulging protrusion of the bulging portion 16 is pressed,
Here, since the opening edge 12a of the bulging portion 16 is abutted against and supported by the abutment stepped portion 511b, the bulging portion 16 is gradually rolled and pressed by the roller surface 514a of the roller 514. Plastic flow molding is performed to achieve thickening to a predetermined thickness at the same portion, and at the same time, the protruding molding surface 514b of the roller 514 forms a bulge on the base side of the poly V groove molding portion 17. A first preliminary rolling is performed to narrow down the shape, and a double-folded flange part B whose tip is inclined toward the protruding holding molding part 513a and a reference groove part 42 which becomes a molding reference point for poly V groove molding are formed in advance. , thus V
A thickened cup-shaped material 4a with grooves is obtained.
そしてこの場合、膨出部１６、つまりポリＶ
溝成形部１５に対するところの、同部厚肉化の
ための転造成形、ならびにこれと同時になされ
るフランジ部Ｂの転造成形、さらにポリＶ溝成
形のための基準溝部４２の転造成形に際して
は、ここでも前記段部２３の基部２１の部分
を、第１ポリ溝予備成形型５１１の肩部５１１
ａと、外押え成形型５１３の突出保持成形部５
１３ａとによつて、常時、挟圧保持されている
ために、これらの各転造成形時における塑性成
形の影響が、前記Ｖ溝成形部１４側に及ぶ惧れ
はなく、またこのようにして前記膨出部１６
を、一方で厚肉化させたポリＶ溝成形部１７と
し、他方で基準溝部４２を成形させた状態で
は、第５図にその詳細を拡大して示した通り、
厚肉化されたポリＶ溝成形部１７にあつて、基
準溝部４２がＶ字形をなして曲げ込まれる。 In this case, the bulge 16, that is, the poly V
When rolling the groove forming part 15 to thicken the same part, simultaneously rolling the flange part B, and further forming the reference groove 42 for poly V groove forming. Here again, the base portion 21 of the step portion 23 is placed on the shoulder portion 511 of the first poly-groove preforming mold 511.
a and the protruding holding molding part 5 of the outer pressing mold 513
13a, the V-groove formed portion 14 side is not affected by the plastic forming during each of these rolling forming operations. The bulge 16
With the thickened poly V groove molded part 17 on one hand and the reference groove part 42 molded on the other hand, the details are shown in an enlarged manner in FIG.
In the thickened poly V-groove molded portion 17, the reference groove portion 42 is bent into a V-shape.
(6) ポリＶ溝形成工程（第１図ｆ）
このポリＶ溝形成工程では、まず第２図ｆ１
およびｆ２に示すように、前記第１ポリＶ溝予
備成形型、成形ローラ５１１，５１４の組合せ
について、これを偏心された第２ポリＶ溝予備
成形型５１５、および成形ローラ５１６の組合
せと、偏心された第３ポリＶ溝予備成形型５１
７、および成形ローラ５１８の組合せとに順次
に組替え、かつこゝでも前記と同様に段部２３
の基部２１に対する挟圧保持をなした状態で、
前記厚肉化されたポリＶ溝成形部１７の基準溝
部４２を、ポリＶ溝成形のための一つの成形基
準点に活用して、このポリＶ溝成形部１７に対
し、第２、第３予備転造としての、並列される
複数条の予備ポリＶ溝４３，４４を、漸次に所
定寸法形状に近付けるように、少しづゝ絞り込
むと共に、前記開口縁部１２ａ側に立上り耳部
４５を次第に立上らせるように成形させる。(6) Poly V groove forming process (Fig. 1 f) In this poly V groove forming process, first, Fig. 2 f1
and f2, the combination of the first poly V-groove preform mold 511 and forming rollers 511 and 514 is combined with the eccentric second poly V-groove preform mold 515 and the combination of the forming roller 516 and the eccentric The third poly V-groove preforming mold 51
7, and the forming roller 518, and here also the step part 23 is changed in the same manner as described above.
While holding the base 21 under pressure,
The reference groove part 42 of the thickened poly V-groove molded part 17 is utilized as one molding reference point for poly V-groove molding, and the second and third The plurality of parallel preliminary poly V-grooves 43 and 44 used as preliminary rolling are gradually narrowed down so as to gradually approach a predetermined size and shape, and the raised ears 45 are gradually formed on the side of the opening edge 12a. Shape it so that it stands up.
すなわち、こゝでは厚肉化されたポリＶ溝成
形部１７に対し、第１予備転造された基準溝部
４２が、こゝでのポリＶ溝成形のための成形基
準点になるために、これらの第２、第３予備転
造としての予備ポリＶ溝４３，４４の複数条
を、過不足のない充分な肉厚で、容易にしかも
正確な寸法形状配置によつて並列成形し得るの
である。 That is, for the thickened poly V-groove molded part 17, the first preliminary rolled reference groove part 42 becomes the molding reference point for poly V-groove molding here. A plurality of these preliminary poly V grooves 43 and 44 as the second and third preliminary rolling can be formed in parallel with sufficient wall thickness without excess or deficiency, easily and with accurate size and shape arrangement. be.
ついでその後、第２図ｆ３に示すように、ポ
リＶ溝予備成形最終段の偏心された第３ポリＶ
溝予備成形型５１７、および第３ポリＶ溝予備
成形ローラ５１８の組合せを、偏心されたポリ
Ｖ溝仕上げ成形型５１９、およびポリＶ溝仕上
げ成形ローラ５２０の組合せに組替え、かつ
こゝでも前記と同様に段部２３の基部２１に対
する挟圧保持をなした状態で、前記第３予備転
造での並列される複数条の予備ポリＶ溝４４
を、Ｖ溝仕上げ成形ローラ５２０により、外周
からより深く絞り込んで仕上げ転造し、同厚肉
化されたポリＶ溝成形部１７に対して、並列さ
れる複数条のポリＶ溝４１を成形させ、このよ
うにしてＶ溝、ポリＶ溝付きＶプーリ４を得
る。 Then, as shown in FIG.
The combination of the groove pre-forming mold 517 and the third poly V-groove pre-forming roller 518 is replaced with the combination of the eccentric poly V-groove finishing mold 519 and the poly V-groove finishing forming roller 520, and here also the same as above. The plurality of preliminary poly V grooves 44 arranged in parallel in the third preliminary rolling are held in a state in which the step portion 23 is held under pressure against the base 21.
is further narrowed from the outer periphery by a V-groove finish forming roller 520 for finish rolling, and a plurality of parallel poly V-grooves 41 are formed in the same thickened poly V-groove forming part 17. In this way, a V-groove, a V-pulley 4 with a poly V-groove is obtained.
そしてまたこゝでも前記と同様に、この厚肉
化されたポリＶ溝成形部１７に対するところ
の、ポリＶ溝４１の成形のための仕上げ転造に
際しては、前記ポリＶ溝仕上げ成形型５１９の
肩部５１９ａと、外押え成形型５１３の突出保
持成形部５１３ａとによつて、前記段部２３の
基部２１を常時、強力に挟圧保持させているた
めに、前記Ｖ溝３１の場合と全く同様に、この
ポリＶ溝４１の仕上げ転造における塑性成形時
の成形圧力、ならびに成形後の残留圧力などの
影響を、Ｖ溝３１側に及ぼすことはなく、この
ようにして前記厚肉化されたポリＶ溝成形部１
５に、並列される複数条のポリＶ溝４１を成形
させた状態では、第６図にその詳細を拡大して
示した通り、同ポリＶ溝成形部１７が、並列す
る複数条のＶ字形に曲げ込まれると共に、ポリ
Ｖ溝成形部１７の基部側は、２重折り返し状の
フランジ部Ｂによつて補強され、かつ前記開口
縁部１２ａ側では、立上り耳部４５が立上げら
れて、これらのフランジ部Ｂと立上り耳部４５
によりポリＶベルトの外れを防止できるのであ
り、こゝでは結果的に所定形状寸法によるとこ
ろの、充分な肉厚とされた相互に並列される複
数条のポリＶ溝４１を所期通りに高精度で形成
し得るのである。 Here again, in the same way as described above, when finish rolling for forming the poly V groove 41 on the thickened poly V groove molded part 17, the poly V groove finishing mold 519 is used. Since the shoulder portion 519a and the protruding holding molded portion 513a of the external presser mold 513 are always strongly holding the base 21 of the step portion 23, it is completely different from the case of the V-groove 31. Similarly, the forming pressure during plastic forming in the finish rolling of this poly V groove 41 and the residual pressure after forming do not affect the V groove 31 side, and in this way, the thickened Poly V groove molding part 1
5, in a state in which a plurality of parallel poly V-grooves 41 are molded, the same poly V-groove molded portion 17 forms a plurality of parallel V-shaped grooves, as shown in an enlarged detail in FIG. At the same time, the base side of the poly V groove molded part 17 is reinforced by a double-folded flange part B, and a rising ear part 45 is raised on the opening edge 12a side, These flange portion B and rising ear portion 45
This prevents the poly V-belt from coming off, and as a result, the poly V-grooves 41, which have a sufficient wall thickness and are arranged in parallel, can be raised to the desired height according to the predetermined shape and dimensions. It can be formed with precision.
すなわち、以上のようにして目的とするＶ溝３
１およびポリＶ溝４１を、それぞれに高精度で形
成した、製品としての板金製Ｖプーリ１００（Ｖ
プーリ４）を製造することができるのである。 That is, the desired V groove 3 is formed as described above.
A sheet metal V pulley 100 (V
This makes it possible to manufacture pulleys 4).
なお、前記実施例では、厚肉化形成工程におい
て、フランジ部Ｂと同時に基準溝部４２も形成す
るようにしたが、勿論、基準溝部４２を形成せず
にフランジ部Ｂだけを形成するようにしてもよ
い。 In the above embodiment, in the thickening process, the reference groove part 42 was also formed at the same time as the flange part B, but of course, only the flange part B was formed without forming the reference groove part 42. Good too.
以上詳述したようにこの発明方法によれば、基
板部と周壁部からなるカツプ状板金素材を用い、
その周壁部上にＶ溝と相互に並設される複数条の
ポリＶ溝とを形成させる場合、これらのＶ溝およ
びポリＶ溝の成形加工に先立つて、まず予め周壁
部に段部を形成させることにより、同周壁部を基
板部側のＶ溝成形部と、開口縁部側のポリＶ溝成
形部とに区分させ、またこのポリＶ溝成形部を厚
肉化相当分だけ外側に撓曲して膨出部を形成させ
ておき、前記Ｖ溝成形部にＶ溝を形成させた後、
厚肉化形成工程において、前記Ｖ溝成形部にＶ溝
が形成された部分を外側から外押え成形型の環状
の突出保持成形部で包含し、該突出保持成形部と
内嵌させた成形型とで前記段部の基部を挟着保持
させた状態で、該突出保持成形部とポリＶ溝成形
部の外周側からの成形ローラとにより、前記段部
と前記ポリＶ溝成形部の基部側を絞り込んで、先
端が突出保持成形部側に傾く２重折り返し状のフ
ランジ部を形成するとともに、前記内嵌させた成
形型とポリＶ溝成形部の外周側からの成形ローラ
により、前記膨出部を圧扁して、ポリＶ溝成形部
を撓曲度合対応に厚肉化させ、さらにポリＶ溝形
成工程において、前記Ｖ溝成形部にＶ溝が形成さ
れた部分を外側から外押え成形型の環状の突出保
持成形部で包含させ、かつ前記段部の基部を前記
外押え成形型の環状の突出保持成形部と内嵌させ
た成形型とで挟着保持させた状態で、前記厚肉化
されたポリＶ溝成形部に複数条からなるポリＶ溝
を並設して形成させるようにしたので、ポリＶ溝
成形部を厚肉化する場合やポリＶ溝を作る場合に
おける塑性成形時の成形圧力、ならび成形後の残
留圧力などの影響を、すでに形成しているＶ溝成
形部のＶ溝に及ぼすことがない。しかもＶ溝およ
びポリＶ溝相互の寸法形状、殊に複数条を正確に
並設する必要のあるポリＶ溝の寸法形状を高精
度、かつ高強度で成形加工でき、またポリＶ溝成
形部の厚肉化によつて、比較的成形の困難であつ
たポリＶ溝の成形を容易にし、併せて相対的に全
体の充分な強度を維持した上での軽量化が可能と
なり、結果的には、この種のＶ溝およびポリＶ溝
を並設する板金製Ｖプーリの伝動効率を格段に向
上でき、しかも構成自体が頗る簡単で、容易に実
施可能であるなどの特長を有するものである。
As detailed above, according to the method of the present invention, a cup-shaped sheet metal material consisting of a substrate portion and a peripheral wall portion is used,
When forming a V-groove and a plurality of poly V-grooves arranged in parallel with each other on the peripheral wall, a stepped portion is first formed on the peripheral wall before forming these V-grooves and poly V-grooves. By doing so, the peripheral wall is divided into a V-groove molded part on the substrate side and a poly V-groove molded part on the opening edge side, and this poly V-groove molded part is bent outward by an amount corresponding to the increased thickness. After bending to form a bulge and forming a V groove in the V groove molded part,
In the thickening forming step, the part in which the V groove is formed in the V-groove molded part is covered from the outside by an annular protruding holding molding part of an external holding mold, and the molding mold is fitted inside the protruding holding molding part. While holding the base of the stepped portion between the two, the protruding holding molding portion and the forming roller from the outer peripheral side of the poly V-groove molding portion hold the step portion and the base side of the poly V-groove molding portion. is narrowed down to form a double-folded flange portion whose tip is inclined toward the protruding holding molding portion, and the bulge is formed by the mold fitted inside and the molding roller from the outer circumferential side of the poly V groove molding portion. The poly V-groove molded part is made thicker to correspond to the degree of bending, and in the poly V-groove forming process, the part where the V groove is formed in the V-groove molded part is externally pressed and molded from the outside. The thickness of Since poly V-grooves consisting of multiple strips are formed in parallel on the thickened poly V-groove molded part, plastic forming is easy when thickening the poly V-groove molded part or creating a poly V-groove. The V-groove of the V-groove molded part that has already been formed is not affected by the molding pressure at the time of molding and the residual pressure after molding. Moreover, the dimensions and shapes of V-grooves and poly V-grooves, especially the dimensions and shapes of poly V-grooves that require accurate parallel arrangement of multiple strips, can be formed with high precision and high strength. By increasing the thickness, it becomes easier to mold poly V grooves, which were relatively difficult to mold, and it also becomes possible to reduce the weight while maintaining sufficient overall strength, resulting in This type of V-groove and poly V-groove are arranged side by side to greatly improve the transmission efficiency of the sheet metal V-pulley, and the structure itself is extremely simple and can be easily implemented.
第１図ａないしｆはこの発明に係るＶ溝および
ポリＶ溝を備えた板金製Ｖプーリの製造方法の一
実施例による板金素材から製品に至る主要段階毎
の加工態様をそれぞれに示す半截断面図であり、
また第２図ａ１ないしｆ３は同上製造方法の一層
具体的な製造工程を順次に示すそれぞれ半截断面
説明図、第３図ないし第６図は同上成形各部の詳
細を示す拡大断面図である。
１…カツプ状素材、２…段付きカツプ状素材、
２ａ…傾斜部付きカツプ状素材、３…Ｖ溝付き粗
整形カツプ状素材、３ａおよび３ｂ…段部付きお
よび段部、膨出部付き粗整形カツプ状素材、４…
Ｖ溝、ポリＶ溝付きＶプーリ、４ａ…Ｖ溝付きカ
ツプ状素材、１１…基板部、１２…周壁部、１４
…Ｖ溝成形部、１５…ポリＶ溝成形部、１６…膨
出部、１７…厚肉化されたポリＶ溝成形部、２１
…段部の基部、２３…段部、３１…Ｖ溝、３２…
段違い端部、４１…ポリＶ溝、４２…基準溝部、
１００…製品としてのＶ溝およびポリＶ溝を備え
た板金製Ｖプーリ、１１１…内絞り型、１１２…
外絞り型、２１１…第１の内押え型、２１２…第
２の内押え型、２１３…予備段押しローラ、２１
４…第３の内押え型、２１５…第４の内押え型、
２１６…仕上げ段押しローラ、３１１…第５の内
押え型、３１２…第６の内押え型、３１３…外絞
り型、３１４…第７の外押え型、３１５…第８の
内押え型、３１６…剪断ローラ、３１７…第９の
内内押え型、３１７ａ…同上成形型の肩部、３１
９…第11の外押え型、３１９ａ…同上成形型の肩
部、３２０…外絞り成形型、４１１…第12の内Ｖ
溝予備成形型、４１１ａ…同上成形型の肩部、４
１２…第13の外Ｖ溝予備成形型、４１３…Ｖ溝予
備成形ローラ、４１３ａ…同上成形ローラの肩
部、４１４…第14の内Ｖ溝仕上げ成形型、４１４
ａ…同上成形型の肩部、４１５…第15の外Ｖ溝仕
上げ成形型、４１６…Ｖ溝仕上げ成形ローラ、４
１６ａ…同上成形ローラの肩部、５１１…第１ポ
リＶ溝予備成形型、５１１ａ…同上成形型の肩
部、５１３…外押え成形型、５１３ａ…同上成形
型の肩部、５１４…第１ポリＶ溝予備成形ロー
ラ、５１５…第２ポリＶ溝予備成形型、５１５ａ
…同上成形型の肩部、５１６…第２ポリＶ溝予備
成形ローラ、５１７…第３ポリＶ溝予備成形型、
５１７ａ…同上成形型の肩部、５１８…第３ポリ
Ｖ溝予備成形ローラ、５１９…ポリＶ溝仕上げ成
形型、５１９ａ…同上成形型の肩部、５２０…ポ
リＶ溝仕上げ成形ローラ、Ｂ…フランジ。
Figures 1a to 1f are half-cut cross-sections showing processing modes at each main stage from sheet metal material to product according to an embodiment of the method for manufacturing a sheet metal V pulley with V grooves and poly V grooves according to the present invention. is a diagram,
Further, FIGS. 2A1 to 2F3 are explanatory half-cut sectional views sequentially showing more specific manufacturing steps of the same manufacturing method, and FIGS. 3 to 6 are enlarged sectional views showing details of each part of the same molding. 1...Cup-shaped material, 2...Stepped cup-shaped material,
2a...Cup-shaped material with a sloped portion, 3...Roughly shaped cup-shaped material with a V groove, 3a and 3b...Roughly shaped cup-shaped material with a step, a step, and a bulge, 4...
V groove, V pulley with poly V groove, 4a...Cup-shaped material with V groove, 11...Base part, 12...Peripheral wall part, 14
...V groove molded part, 15...Poly V groove molded part, 16...Bulging part, 17...Thickened poly V groove molded part, 21
...Base of step, 23...Step, 31...V groove, 32...
Different level end, 41... Poly V groove, 42... Reference groove part,
100...Sheet metal V pulley with V groove and poly V groove as a product, 111...Inner drawing type, 112...
Outer drawing die, 211...first inner presser die, 212...second inner presser die, 213...preliminary stage push roller, 21
4...Third internal presser type, 215...Fourth internal presser type,
216...Finishing stage push roller, 311...Fifth inner presser die, 312...Sixth inner presser die, 313...Outer drawing die, 314...Seventh outer presser die, 315...Eighth inner presser die, 316 ... Shearing roller, 317 ... Ninth inner presser mold, 317a ... Shoulder part of the same mold, 31
9... Eleventh outer pressing die, 319a... Shoulder of the same mold, 320... Outer drawing die, 411... Twelfth inner V
Groove preforming mold, 411a...Shoulder part of the same molding mold, 4
12... Thirteenth outer V-groove preforming mold, 413... V-groove preforming roller, 413a... Shoulder of the same forming roller, 414... Fourteenth inner V-groove finishing mold, 414
a... Shoulder of the same mold as above, 415... 15th outer V-groove finishing mold, 416... V-groove finishing forming roller, 4
16a... Shoulder of the above forming roller, 511... First poly V groove preforming mold, 511a... Shoulder of the above forming mold, 513... External pressing mold, 513a... Shoulder of the same forming mold, 514... First poly V-groove preforming roller, 515...Second poly V-groove preforming mold, 515a
...Shoulder of the same mold, 516...Second poly V-groove preform roller, 517...Third poly V-groove preform mold,
517a... Shoulder of the same mold as above, 518... Third poly V groove preforming roller, 519... Poly V groove finishing mold, 519a... Shoulder of same as the above mold, 520... Poly V groove finishing forming roller, B... Flange .
Claims (1)
からなるカツプ状素材を形成させるカツプ状素材
形成工程と、 前記カツプ状素材の周壁部に段部を形成して、
周壁部を基板部側のＶ溝成形部と開口縁部側のポ
リＶ溝成形部とに区分させる段部形成工程と、 前記ポリＶ溝成形部を厚肉化相当分だけ外側に
撓曲させて膨出部を形成させる厚肉化予備形成工
程と、 前記Ｖ溝成形部にＶ溝を形成させるＶ溝形成工
程と、 前記Ｖ溝形成工程によつてＶ溝成形部にＶ溝が
形成された部分を外側から外押え成形型の環状の
突出保持成形部で包含し、該突出保持成形部と内
嵌させた成形型とで前記段部の基部を挟着保持さ
せた状態で、該突出保持成形部とポリＶ溝成形部
の外周側からの成形ローラとにより、前記段部と
前記ポリＶ溝成形部の基部側を絞り込んで、先端
が突出保持成形部側に傾く２重折り返し状のフラ
ンジ部を形成するとともに、前記内嵌させた成形
型とポリＶ溝成形部の外周側からの成形ローラに
より、前記膨出部を圧扁して、ポリＶ溝成形部を
撓曲度合対応に厚肉化させる厚肉化形成工程と、 前記Ｖ溝形成工程によつてＶ溝成形部にＶ溝が
形成された部分を外側から外押え成形型の環状の
突出保持成形部で包含させ、かつ前記段部の基部
を前記外押え成形型の環状の突出保持成形部と内
嵌させた成形型とで挟着保持させた状態で、前記
厚肉化されたポリＶ溝成形部に複数条からなるポ
リＶ溝を並設して形成させるポリＶ溝形成工程と
を、備えるＶ溝およびポリＶ溝を備えた板金製Ｖ
プーリの製造方法。[Scope of Claims] 1. A cup-shaped material forming step of deep-drawing a sheet metal material to form a cup-shaped material consisting of a substrate portion and a peripheral wall portion, and forming a stepped portion on the peripheral wall portion of the cup-shaped material. ,
Step forming step of dividing the peripheral wall portion into a V-groove molded portion on the substrate side and a poly V-groove molded portion on the opening edge side, and bending the poly V-groove molded portion outward by an amount corresponding to the increased thickness. a thickening pre-formation step of forming a bulge in the V-groove molded portion; a V-groove formation step of forming a V-groove in the V-groove molded portion; and a V-groove formed in the V-groove molded portion by the V-groove formation step. The protruding portion is covered from the outside by an annular protruding holding molding part of an external pressing mold, and the protruding part is held between the protruding holding molding part and the mold fitted inside, and the protruding part is The holding molding part and the forming roller from the outer peripheral side of the poly V groove molding part narrow down the step part and the base side of the poly V groove molding part to form a double folded shape with the tip protruding and tilting toward the holding molding part. While forming a flange part, the bulging part is compressed by the mold fitted inside and a forming roller from the outer circumferential side of the poly V groove molded part, so that the poly V groove molded part corresponds to the degree of bending. a thickening forming step of increasing the thickness; and a portion in which a V groove is formed in the V groove molded portion by the V groove forming step is included from the outside with an annular protruding holding molding portion of an external pressing mold, and While the base of the stepped portion is held between the annular protruding holding molding part of the external pressing mold and the mold fitted therein, a plurality of strips are inserted into the thickened poly V-groove molding part. a poly V groove forming step of forming poly V grooves in parallel;
How to manufacture pulleys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14524985A JPS626725A (en) | 1985-07-02 | 1985-07-02 | Manufacture of v-pulley made of sheet metal provided with v-groove and multi-v-groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14524985A JPS626725A (en) | 1985-07-02 | 1985-07-02 | Manufacture of v-pulley made of sheet metal provided with v-groove and multi-v-groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS626725A JPS626725A (en) | 1987-01-13 |
| JPH0220342B2 true JPH0220342B2 (en) | 1990-05-09 |
Family
ID=15380764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14524985A Granted JPS626725A (en) | 1985-07-02 | 1985-07-02 | Manufacture of v-pulley made of sheet metal provided with v-groove and multi-v-groove |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS626725A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0470459U (en) * | 1990-10-29 | 1992-06-22 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06324383A (en) * | 1993-05-17 | 1994-11-25 | Fuji Photo Optical Co Ltd | Albada type finder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310553A (en) * | 1976-07-15 | 1978-01-31 | Kurita Water Ind Ltd | Mehtod of treating waste water containing fluorine and boron |
| JPS5788929A (en) * | 1977-02-04 | 1982-06-03 | Drive Mfg Inc | Pulley and its manufacture |
| JPS5790459A (en) * | 1980-11-21 | 1982-06-05 | Nippon Spindle Mfg Co Ltd | Manufacture of grooved v-pulley |
-
1985
- 1985-07-02 JP JP14524985A patent/JPS626725A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310553A (en) * | 1976-07-15 | 1978-01-31 | Kurita Water Ind Ltd | Mehtod of treating waste water containing fluorine and boron |
| JPS5788929A (en) * | 1977-02-04 | 1982-06-03 | Drive Mfg Inc | Pulley and its manufacture |
| JPS5790459A (en) * | 1980-11-21 | 1982-06-05 | Nippon Spindle Mfg Co Ltd | Manufacture of grooved v-pulley |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0470459U (en) * | 1990-10-29 | 1992-06-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS626725A (en) | 1987-01-13 |
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| Date | Code | Title | Description |
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| LAPS | Cancellation because of no payment of annual fees |