JPH0579420B2 - - Google Patents
Info
- Publication number
- JPH0579420B2 JPH0579420B2 JP61127979A JP12797986A JPH0579420B2 JP H0579420 B2 JPH0579420 B2 JP H0579420B2 JP 61127979 A JP61127979 A JP 61127979A JP 12797986 A JP12797986 A JP 12797986A JP H0579420 B2 JPH0579420 B2 JP H0579420B2
- Authority
- JP
- Japan
- Prior art keywords
- forming
- intermediate member
- outer periphery
- hardness
- metal intermediate
- 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
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 8
- 239000007769 metal material Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 2
- 230000000452 restraining effect Effects 0.000 claims 1
- 239000000047 product Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000010273 cold forging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 102200082907 rs33918131 Human genes 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005482 strain hardening Methods 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
-
- 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】
〔産業上の利用分野〕
本発明は溝付プーリの製造方法に係り、特に冷
間回転ロール成形にて溝を成形するに好適な溝付
プーリの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a grooved pulley, and particularly to a method for manufacturing a grooved pulley suitable for forming grooves by cold rotation roll forming.
従来の冷間鍛造による溝付プーリの製造方法
は、特開昭60−216942号公報に記載してあるよう
に金属円板素材の外周にすり割ローラを押圧して
すり割溝を成形した中間品を形成し、その後その
外周に予備成形ローラにより最終製品形状に対応
した多条Ｖ溝プーリの製造技術が開示されてい
る。しかしながら、冷関鍛造技術を応用し製品成
形精度の高い製品を量産化する点については配慮
されていない。
The conventional manufacturing method of a grooved pulley by cold forging is as described in Japanese Patent Application Laid-Open No. 60-216942. A technique for manufacturing a multi-thread V-groove pulley that corresponds to the shape of the final product is disclosed by forming a product and then using a preforming roller on the outer periphery of the product. However, no consideration has been given to mass producing products with high forming precision by applying cold forging technology.
上記従来技術は、予備成形ローラを押圧する前
に金属素材の中心部を冷間押圧加工することによ
つて金属中間部材の円筒空間の内周部を加工硬化
させ、金属中間部材の内側に剛性を持たせる点に
ついて配慮されておらず、成形ロールダイスにて
外周溝を成形する際、高速化移転につれて前記円
筒空間の内周部に成形圧歪が加わり規定の製品成
形精度が得られないと言つた問題が生じる。
The above conventional technology works hardens the inner peripheral part of the cylindrical space of the metal intermediate member by cold-pressing the center of the metal material before pressing the preforming roller, and stiffens the inside of the metal intermediate member. Therefore, when forming the outer circumferential groove with a forming roll die, as the speed increases, forming pressure strain is added to the inner circumference of the cylindrical space, making it impossible to obtain the specified product forming accuracy. The problem I mentioned arises.
本発明の目的は、製品成形精度を上げて量産化
に適した溝付プーリの製造方法を提供することに
ある。 An object of the present invention is to provide a method for manufacturing a grooved pulley that improves product molding accuracy and is suitable for mass production.
上記目的は、金属素材の中心部を冷間押圧する
ことによつて椀状の金属中間部材の円筒空間の内
周部を加工硬化させ、その後回転する前記金属中
間部材の外周に成形ロールダイスを押圧し、金属
中間部材の円筒空間の内周部の硬度と外側の成形
加工硬度とを近付け加工硬度をバランスさせるよ
うにして外周溝を形成することによつて達成され
る。
The above purpose is to work harden the inner periphery of the cylindrical space of the bowl-shaped metal intermediate member by cold pressing the center of the metal material, and then insert a forming roll die around the outer periphery of the rotating metal intermediate member. This is achieved by pressing the metal intermediate member so that the hardness of the inner circumferential part of the cylindrical space and the forming hardness of the outer side are brought close to each other to balance the working hardness, thereby forming the outer circumferential groove.
雌型に中心を拘束して配置された円板状金属素
材は、軸方向から雄型により冷間押圧されること
により軸方向及び半径方向に塑性流動し型に沿つ
た椀状の金属中間部材が形成される。ここで金属
素材の円筒空間内周部が効果的にしごかれて加工
硬化し、剛性が一段と高くなるので外周に溝成形
のための成形ロールダイスを押圧しても内側と外
側の加工硬度が一致してバランスし、型崩れする
ことがない。
The disk-shaped metal material placed with its center restrained in the female mold is cold pressed from the axial direction by the male mold, causing it to plastically flow in the axial and radial directions, forming a bowl-shaped metal intermediate member that follows the mold. is formed. Here, the inner periphery of the cylindrical space of the metal material is effectively squeezed and work hardened, further increasing its rigidity, so that even when a forming roll die is pressed to form grooves on the outer periphery, the working hardness of the inside and outside remains the same. It is perfectly balanced and does not lose its shape.
以下、本発明の一実施例を第１図〜第６図に示
す実施例に基づき説明する。第１図はプーリ３の
完成品で、軸方向中間部に貫通穴３１を形成した
取り付け用底板３２を有し、円筒部３３の外周に
はＶ溝３４が複数個形成されている。
Hereinafter, one embodiment of the present invention will be described based on the embodiment shown in FIGS. 1 to 6. FIG. 1 shows a completed pulley 3, which has a mounting bottom plate 32 with a through hole 31 formed in the axially intermediate portion, and a plurality of V grooves 34 formed on the outer periphery of a cylindrical portion 33.
次に本発明の製造工程を図を追つて説明する。
第２図は低炭素鋼（例えばS10C鋼）よりなる円
板状素材１を示し、中心部に貫通穴１ａを設け好
ましくは金型加工時の焼き付きを防止するため潤
滑剤が施してある。この円板状素材１は、ビツカ
ス硬度がHV80〜85程度で、第３図に示すように
底部に前記円板状素材１の外形より小さい径の凸
部A1を備え、周囲を平面A2とした雌型Ａに配置
され第１工程のプレス成形に備える。 Next, the manufacturing process of the present invention will be explained with reference to the drawings.
FIG. 2 shows a disc-shaped material 1 made of low carbon steel (for example, S10C steel), which has a through hole 1a in its center and is preferably coated with lubricant to prevent seizure during mold machining. This disc-shaped material 1 has a bits hardness of about HV80 to 85, and as shown in FIG . The mold A is placed in a female die A in preparation for the first step of press molding.
この状態では、円板状素材１は雌型Ａの内周面
に対し外周部１ｂが、底部の外周部に対し底面１
ｃの外周部がそれぞれ内〓を持つて対向するよう
にガイドピンＢを介して挿入配置され、その上か
ら同様前記ガイドピンＢを利用して断面Ｔ字状の
雄型Ｃが挿入配置されされている。ここで該雄型
Ｃの先端C1の外径は前記雌型Ａの凸部A1の径と
ほぼ等しくしてある。 In this state, the outer periphery 1b of the disk-shaped material 1 is relative to the inner periphery of the female die A, and the bottom surface 1b is relative to the outer periphery of the bottom.
The outer circumferences of C are inserted through guide pins B so that they face each other with their inner sides facing each other, and a male mold C having a T-shaped cross section is inserted from above using guide pins B. ing. Here, the outer diameter of the tip C1 of the male mold C is approximately equal to the diameter of the convex portion A1 of the female mold A.
第４図の第２工程で前記雄型Ｃを下降させると
円板状素材１は中心付近が押圧され空〓のある外
周方向及び軸方向に塑性変形されて行く、この時
の塑性流動は特に中心部の軸方向の伸びが大きく
なる様に設定してある。従つて、金属中間部材２
で言えば、外側２ａのビツカス硬度HV80〜85程
度に比較し、円筒空間の内周部である。内側２
ｂ，２ｃの加工硬度がHV150〜180程度と大き
く、剛性が高くなつている。 When the male mold C is lowered in the second step of FIG. 4, the center of the disc-shaped material 1 is pressed and the disc-shaped material 1 is plastically deformed in the outer circumferential direction and in the axial direction.At this time, the plastic flow is particularly It is set so that the elongation in the axial direction of the center part becomes large. Therefore, the metal intermediate member 2
In other words, it is the inner peripheral part of the cylindrical space compared to the outside 2a, which has a Bitsuka hardness of about HV80 to 85. inside 2
The processing hardness of b and 2c is as high as HV150 to 180, and the rigidity is high.
次に、上記のようにして得らた金属中間部材２
は、第５図の第３工程で回転ロール成形機の一対
のチヤツクD1，D2によつて挟持して回転せられ、
外周方向から第１のロールダイスＥを当てて冷間
回転ロール予備成形を行い溝付プーリ３の概略形
状を造る。 Next, the metal intermediate member 2 obtained as described above
is held and rotated by a pair of chucks D 1 and D 2 of a rotary roll forming machine in the third step in FIG.
A first roll die E is applied from the outer circumferential direction to perform cold rotating roll preforming to create the approximate shape of the grooved pulley 3.
さらに上記で得られた中間部材は第４工程で第
６図のように本成形を行うための第２のロールダ
イスＦを前記同様外周方向から押圧して冷間ロー
ル成形により本成形を行い、前記チヤツクの端面
形状及びロールダイス形状に沿つて中間部材を整
形加工硬化させて行く。この時の外側の加工硬度
はビツカス硬度でHV150〜180程度で有り、第４
図で形成された金属中間部材の円筒空間の内周部
のビツカス硬度とバランスするように近似してお
り、加工硬度のアンバランスによる形崩れは全く
無い。このようにして、冷間成形による多条Ｖ溝
のプーリ３が得られる。 Furthermore, in the fourth step, the intermediate member obtained above is subjected to main forming by cold roll forming by pressing the second roll die F for performing main forming from the outer circumferential direction as shown in FIG. The intermediate member is shaped and hardened along the end face shape of the chuck and the roll die shape. The processing hardness of the outside at this time is about HV150 to 180 on the Bitsukas hardness, and is 4th grade.
The hardness is approximated so as to be balanced with the Bitsukas hardness of the inner peripheral part of the cylindrical space of the metal intermediate member formed in the figure, and there is no deformation due to unbalanced working hardness. In this way, a pulley 3 with multiple V-grooves is obtained by cold forming.
従つて、チヤツクの軸心精度が出ている以上単
純な冷間回転ロール成形だけの、所謂無切削で精
度の高い溝付プーリが得られる。また単純な内側
加工だけで、冷間回転ロール成形に適した金属中
間部材が得られるので生産スピードが高く、量産
品に適した製造方法である。 Therefore, as long as the axial center accuracy of the chuck is high, a highly accurate grooved pulley can be obtained by simple cold rotation roll forming, so-called no cutting. Furthermore, since a metal intermediate member suitable for cold rotary roll forming can be obtained by simply performing inner processing, the production speed is high, and this manufacturing method is suitable for mass-produced products.
なお、上記実施例ではロール成形回数を２回に
分割してあるが、溝本数に応じて数回に分けても
良く、または１回の成形で良い場合もある。 In the above embodiment, the number of times of roll forming is divided into two times, but depending on the number of grooves, the number of times of roll forming may be divided into several times, or one time of forming may be sufficient.
本発明によれば、金属中間部材の円筒空間の内
周部に溝成形時に生じる加工硬化と同様の加工硬
化を予め持たせているので、溝付プーリを製品成
形精度を上げて容易に提供できる。
According to the present invention, since the inner circumference of the cylindrical space of the metal intermediate member is given work hardening similar to that which occurs during groove forming, it is possible to easily provide a grooved pulley with improved product forming accuracy. .
第１図は本発明の製法により得られたＶプーリ
の一部縦断側面図、第２図は本製法に用いられる
金属素材の一部縦断側面図、第３図は本発明の製
造工程の第１工程を示す要部断面図、第４図は本
発明の製造工程の第２工程を示す要部断面図、第
５図は本発明の製造工程の第３工程を示す要部断
面図、第６図は本発明の製造工程の第４工程を示
す要部断面図である。
１……円板状金属素材、２……椀状の金属中間
部材、Ｅ，Ｆ……成形ロールダイス、D1，D2…
…チヤツク。
Fig. 1 is a partially longitudinal side view of a V-pulley obtained by the manufacturing method of the present invention, Fig. 2 is a partially longitudinal side view of the metal material used in this manufacturing method, and Fig. 3 is a diagram of the manufacturing process of the present invention. FIG. 4 is a cross-sectional view of main parts showing the first step, FIG. 4 is a cross-sectional view of main parts showing the second step of the manufacturing process of the present invention, and FIG. FIG. 6 is a sectional view of a main part showing the fourth step of the manufacturing process of the present invention. 1... Disc-shaped metal material, 2... Bowl-shaped metal intermediate member, E, F... Forming roll die, D 1 , D 2 ...
...Check.
Claims (1)
形ロールダイスを押圧し、冷間回転ロール成形に
より溝付プーリを得る方法であつて、 中空の円板状金属素材の中空部をガイドピン
で、底面及び外周を雌型で拘束しながら、前記ガ
イドピンに沿つて冷間押圧することによつて、円
筒空間の内周部に加工硬化領域を形成した金属中
間部材を得、その後該金属中間部材の両底面を挟
持するチヤツクで固定して回転させると共に、外
周に押圧される成形ロールダイスの成形加工硬度
と前記中心内周部の硬度とを近付けバランスさせ
るようにして外周に複数の溝を形成することを特
徴とした溝付プーリの製造方法。 ２ 特許請求の範囲第１項記載において、円板状
素材は低炭素鋼からなる中空部材であることを特
徴とした溝付プーリの製造方法。[Claims] 1. A method for obtaining a grooved pulley by cold rotary roll forming by pressing a forming roll die on the outer periphery of a rotating substantially disk-shaped metal intermediate member, the method comprising: a hollow disk-shaped metal material; A metal intermediate member in which a work-hardened region is formed in the inner peripheral part of a cylindrical space by cold pressing along the guide pin while restraining the hollow part with a guide pin and the bottom surface and outer periphery with a female die. After that, both bottom surfaces of the metal intermediate member are fixed with chucks that clamp them and rotated, and the forming hardness of the forming roll die pressed against the outer periphery and the hardness of the center inner circumferential part are brought close to each other and balanced. A method for manufacturing a grooved pulley, characterized in that a plurality of grooves are formed on the outer periphery of the pulley. 2. A method for manufacturing a grooved pulley according to claim 1, wherein the disc-shaped material is a hollow member made of low carbon steel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61127979A JPS63101034A (en) | 1986-06-04 | 1986-06-04 | Manufacture of grooved pulley |
| KR870005552A KR880000167A (en) | 1986-06-04 | 1987-06-02 | Manufacturing method of grooved pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61127979A JPS63101034A (en) | 1986-06-04 | 1986-06-04 | Manufacture of grooved pulley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63101034A JPS63101034A (en) | 1988-05-06 |
| JPH0579420B2 true JPH0579420B2 (en) | 1993-11-02 |
Family
ID=14973430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61127979A Granted JPS63101034A (en) | 1986-06-04 | 1986-06-04 | Manufacture of grooved pulley |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS63101034A (en) |
| KR (1) | KR880000167A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5152061A (en) * | 1992-02-19 | 1992-10-06 | Tesma International Inc. | Cold-forming of toothed wheels from sheet steel |
| US5203223A (en) * | 1992-02-19 | 1993-04-20 | Tesma International Inc. | Cold-forming of toothed wheels from sheet steel |
| US5237744A (en) * | 1992-02-19 | 1993-08-24 | Tesma International Inc. | Method of cold-forming toothed wheels |
| KR100817172B1 (en) * | 2003-11-27 | 2008-03-27 | 주식회사 티에스피 | Manufacturing method of a pulley |
| KR100921443B1 (en) | 2008-12-23 | 2009-10-13 | 일진금속공업 주식회사 | A method of compressor pulley for car air conditioner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57209737A (en) * | 1981-06-18 | 1982-12-23 | Aisin Seiki Co Ltd | Manufacture of v-ribbed pulley |
| JPS58135741A (en) * | 1982-02-05 | 1983-08-12 | Mitsubishi Electric Corp | Manufacture of pulley |
-
1986
- 1986-06-04 JP JP61127979A patent/JPS63101034A/en active Granted
-
1987
- 1987-06-02 KR KR870005552A patent/KR880000167A/en not_active Application Discontinuation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57209737A (en) * | 1981-06-18 | 1982-12-23 | Aisin Seiki Co Ltd | Manufacture of v-ribbed pulley |
| JPS58135741A (en) * | 1982-02-05 | 1983-08-12 | Mitsubishi Electric Corp | Manufacture of pulley |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63101034A (en) | 1988-05-06 |
| KR880000167A (en) | 1988-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5448832A (en) | Method of forming a boss on a plate-like metallic blank, and method of forming a pulley from a metallic plate | |
| JPH0469496B2 (en) | ||
| JPH0966330A (en) | Method for thickening outer part of disk and method for forming disk member with drive part on outer periphery | |
| JPH0579420B2 (en) | ||
| JPS5852733B2 (en) | Outer lace processing method and equipment | |
| JP3407148B2 (en) | Cold forging method of spline shaft | |
| JP3862429B2 (en) | Method and apparatus for manufacturing inner ring for constant velocity joint | |
| JPH0459980B2 (en) | ||
| JPS6045021B2 (en) | Tools and methods for rolling splines etc. | |
| JPS588931B2 (en) | Cold forming method for spline shaft | |
| JPS59166339A (en) | Manufacture of ball pin | |
| JPS60121025A (en) | Manufacture of multigroove v-pulley | |
| JPS61162234A (en) | Manufacture of v-grooved pulley | |
| JPH04366028A (en) | Manufacturing device for transmission gear | |
| JPH10180386A (en) | Pulley and its production | |
| JPS5890332A (en) | Solid roll and its manufacture | |
| JPH0434026B2 (en) | ||
| JPH11226662A (en) | Manufacture of constant velocity joint parts | |
| JPH0227056B2 (en) | ||
| JPH0259012B2 (en) | ||
| US20040139774A1 (en) | Method of forming a sprocket | |
| JP2624629B2 (en) | Dies for forging and forging and methods of making | |
| JPS6064738A (en) | Production of outer ring for universal joint | |
| JPH07214223A (en) | Manufacture of ring body for mouthpiece of hydraulic hose | |
| JPH0380574B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |