JPS6096344A - Production of sheet metal pulley for toothed belt - Google Patents
Production of sheet metal pulley for toothed beltInfo
- Publication number
- JPS6096344A JPS6096344A JP17944184A JP17944184A JPS6096344A JP S6096344 A JPS6096344 A JP S6096344A JP 17944184 A JP17944184 A JP 17944184A JP 17944184 A JP17944184 A JP 17944184A JP S6096344 A JPS6096344 A JP S6096344A
- Authority
- JP
- Japan
- Prior art keywords
- die
- punch
- peripheral wall
- tooth
- toothed
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 title claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000007787 solid Substances 0.000 claims abstract description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 5
- 239000011701 zinc Substances 0.000 claims abstract description 5
- 238000005246 galvanizing Methods 0.000 claims abstract description 3
- 230000002093 peripheral effect Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000010273 cold forging Methods 0.000 abstract description 6
- 230000001050 lubricating effect Effects 0.000 abstract description 5
- 238000007598 dipping method Methods 0.000 abstract 1
- 238000005242 forging Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
- B21D53/261—Making other particular articles wheels or the like pulleys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Pulleys (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は歯付ベルト用板金製プーリの製造方法に関し、
特ｔこ冷間鍛造によってプーリ歯形部を一工程にて形成
する製造方法に係わる。[Detailed Description of the Invention] The present invention relates to a method for manufacturing a sheet metal pulley for a toothed belt.
In particular, the present invention relates to a manufacturing method in which the pulley tooth profile is formed in one step by cold forging.
従来、歯付ベルト用板金製プーリを製造する ゛場合は
、一般に、板金素材から打抜いたブランクをカップ状に
絞り加工し、その縁をトリミングしてから更に３〜４回
の絞り加工をして歯形部を形成する絞り加工法が用いら
れていた。絞り加工に有効な潤滑被膜処理はカップ状に
絞り加工したのちに行ってもよいが、板金素材又はブラ
ンクの状態で行えば安価に処理することができる。Conventionally, when manufacturing sheet metal pulleys for toothed belts, a blank is punched out of a sheet metal material, drawn into a cup shape, the edges are trimmed, and then drawn three or four more times. A drawing method was used to form the tooth profile. The lubricating coating treatment, which is effective for drawing, may be carried out after drawing into a cup shape, but it can be done at a low cost if it is carried out on the sheet metal material or blank.
しかしながら、従来の絞り加工法は工数及び金型費が嵩
む上に、歯の精度が低く、しがも金型の焼付き、かじり
等によって金型寿命が短かくなるばかりでなく、歯の表
面粗さの低下により歯付ベルトの寿命が短かくなるとい
う欠点があった。However, the conventional drawing method not only increases man-hours and mold costs, but also has low tooth precision, which not only shortens the mold life due to mold seizure and galling, but also reduces the tooth surface. There was a drawback that the life of the toothed belt was shortened due to the decrease in roughness.
本発明の目的は、カップ状の絞り加工物に冷間鍛造法を
用いて歯形部を形成し、もって従来の上記欠点を除去し
た歯付ベルト用板金製プーリの製造方法を提案するにあ
る。An object of the present invention is to propose a method for manufacturing a sheet metal pulley for a toothed belt, which eliminates the above-mentioned drawbacks of the conventional method by forming a tooth profile on a cup-shaped drawn product using a cold forging method.
以下本発明の実施例を図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
本発明の歯付ヘルド用プーリ （以下単にプーリと称す
る）を製造するには、先づ冷間調造に適する素材鉄板又
はブランクに溶融亜鉛又は亜鉛メッキによる潤滑被膜処
理をして固形潤滑被膜を形成し、ブランクを絞り加工し
て第１図に示す如く上げ底形底部１とプーリ歯形部を形
成すべき周壁部２とを有するカップ状体３に加工する。In order to manufacture the toothed heddle pulley of the present invention (hereinafter simply referred to as a pulley), first a solid lubricant coating is applied to a steel plate or a blank suitable for cold preparation using hot-dip zinc or zinc plating. The blank is drawn to form a cup-shaped body 3 having a raised bottom portion 1 and a peripheral wall portion 2 in which the pulley teeth are to be formed, as shown in FIG.
なお、前記素材鉄板又はブランクをカップ状体３に絞り
加工したのち、これに前記固形潤滑被膜処理をしてもよ
い。次に周壁部２の縁のトリミングを行うが、トリミン
グは山形部成形には必ずしも必要ではない。また周壁部
２の高さＷの寸法精度を良好にするために研磨すること
もあるが、プーリの機能の点からみれば必ずしもその必
要はないと考えられる。Incidentally, after the raw iron plate or blank is drawn into the cup-shaped body 3, it may be subjected to the solid lubricant coating treatment. Next, the edge of the peripheral wall portion 2 is trimmed, but trimming is not necessarily necessary for forming the chevron portion. Further, in order to improve the dimensional accuracy of the height W of the peripheral wall portion 2, polishing may be performed, but it is considered that this is not necessarily necessary from the viewpoint of the function of the pulley.
周壁部２の内径ｄ１及び外径ｄｏは、第２図に示すよう
に、ｄｉがプーリ歯部４の内径ｄ、より０．１〜０．２
ｍｍ程度大きく、ｄｏが歯部４の外径ｄ２より１．２ｍ
ｍ程度大となるように定めておく。As shown in FIG. 2, the inner diameter d1 and the outer diameter do of the peripheral wall portion 2 are 0.1 to 0.2 from the inner diameter d of the pulley tooth portion 4.
mm larger, and do is 1.2 m larger than the outer diameter d2 of the tooth portion 4.
It is set so that it is about m large.
次に周壁部２にプーリ歯部４と歯底部５とを形成するた
め、カップ状体３をパンチ６とダイス７とにより冷間調
造をする。Next, in order to form the pulley tooth portion 4 and the tooth bottom portion 5 on the peripheral wall portion 2, the cup-shaped body 3 is cold-formed using a punch 6 and a die 7.
パンチ６は円柱体の外周面に歯部４及び歯底部５の内面
形状に適合する山部８及び谷部′９とを具えており、ま
たダイス７は、周壁部２が嵌入する上部円筒面１０と、
その下方に形成され歯部４及び歯底部５の外面形状に適
合する谷部１１及び山部１２とを具えた型部分１３と、
円筒面１０と型部分１３との間に形成した円＆（Ｃ状斜
面１４とを有する。しかして、型部分１３とパンチ６と
の間隙長ｔは周壁部２の肉厚より約０．５ｍｍ位小さく
定められる。パンチ６の下面及びカウンタパンチ１５の
上面は、カップ状体底部１の上下の凹凸形状に適合する
形状とする。The punch 6 has a ridge 8 and a trough '9 on the outer circumferential surface of the cylindrical body, which match the inner shapes of the teeth 4 and the tooth bottom 5, and the die 7 has an upper cylindrical surface into which the peripheral wall 2 is fitted. 10 and
a mold part 13 having troughs 11 and peaks 12 formed therebelow and matching the external shapes of the tooth part 4 and tooth root part 5;
It has a circular & (C-shaped slope 14 formed between the cylindrical surface 10 and the mold part 13. Therefore, the gap length t between the mold part 13 and the punch 6 is about 0.5 mm larger than the thickness of the peripheral wall part 2. The lower surface of the punch 6 and the upper surface of the counter punch 15 are shaped to match the top and bottom uneven shapes of the bottom portion 1 of the cup-shaped body.
次に第３〜７図を参照してプーリ歯形部の形成過程を説
明する。Next, the process of forming the pulley tooth profile will be described with reference to FIGS. 3 to 7.
先づ、カップ状体３に固形ｉｍ／！被膜を形成したのち
、これをカウンタパンチ１５上に載せ、パンチ６を下降
させる（第３図）。これにより周壁部２とこれに続く底
部１の外周部分とは、前記固形潤滑被膜による減摩作用
の下で斜面１４により直径が短縮され、更にプーリ歯底
部５に相当する部分が、山部１２の上端における斜面１
４の部分によって中心方向に押しこまれ、先づ第４ｂ図
に示す如き形状に予備成形される。更にパンチ６が下降
すると、周壁部２はパンチ６と型部分１３との間隙内に
押しこまれていく。First, solid im/! in the cup-shaped body 3! After forming the film, it is placed on the counter punch 15 and the punch 6 is lowered (FIG. 3). As a result, the diameter of the peripheral wall portion 2 and the outer peripheral portion of the bottom portion 1 that follows it is reduced by the slope 14 under the friction-reducing effect of the solid lubricant coating, and furthermore, the portion corresponding to the pulley tooth bottom portion 5 is reduced in diameter by the mountain portion 12. Slope 1 at the top of
4 in the center direction, and is first preformed into the shape shown in FIG. 4b. When the punch 6 further descends, the peripheral wall portion 2 is pushed into the gap between the punch 6 and the mold portion 13.
上記した如く間隙長ｔは周壁部２の肉厚より小であるた
め、周壁部２とこれに続く底部１の外周部分とは、パン
チ６の山部８及び谷部９と型部分１３の谷部１１及び山
部１２との挟圧作用により第７図に示す如く一部材料の
破線矢印方向の流動を生しながら変形して所望形状の歯
部４、歯底部５及び歯側部１６に成形され（第５図）、
冷間調造を完了する。As mentioned above, since the gap length t is smaller than the wall thickness of the peripheral wall 2, the peripheral wall 2 and the outer peripheral part of the bottom 1 following this are the peaks 8 and troughs 9 of the punch 6 and the valleys of the mold part 13. As shown in FIG. 7, a part of the material is deformed while flowing in the direction of the dashed arrow due to the squeezing action between the part 11 and the peak part 12, resulting in the tooth part 4, the tooth bottom part 5, and the tooth side part 16 having a desired shape. molded (Fig. 5),
Complete cold preparation.
冷間鍛造完了品に所要の軸孔、取付孔及びノック孔等を
打抜いたのち、防錆処理をしてプーリを完成する。After punching the required shaft holes, mounting holes, dowel holes, etc. into the cold-forged product, the pulley is completed by applying anti-corrosion treatment.
本発明は、上記の通り冷間調造に通ずる溶融亜鉛又は亜
鉛メッキによる被膜処理によって形成した固形潤滑被膜
を有するカップ状体の周壁部を、冷間調造によりプーリ
歯形部に加工するので、従来の絞り加工ではプーリ歯形
部の成形に数工程を要したものが１回の成形加工で足り
、工数を著しく節減しうる上に成形精度が良好である効
果があり、更に固形潤滑被膜の良好な潤滑作用により冷
間鍛造金型の寿命が永（、また焼付、かじり等がないた
め、プーリ歯形部の表面が？ｌｔらかで歯付ベルトの寿
命を向上させる効果がある。なお、亜鉛被膜処理をした
場合は防錆及び美観が良好となる付加効果がある。In the present invention, as described above, the peripheral wall portion of a cup-shaped body having a solid lubricating coating formed by coating treatment with hot dip zinc or galvanizing that leads to cold forming is processed into a pulley tooth profile by cold forming. Conventional drawing processing required several steps to form the pulley tooth profile, but now only one forming process is required, which not only significantly reduces the number of man-hours, but also has the effect of good forming accuracy, and also produces a good solid lubricant film. The life of the cold forging mold is extended due to the lubrication effect (also, since there is no seizure, galling, etc., the surface of the pulley tooth profile is smooth and has the effect of improving the life of the toothed belt. When coated, it has the additional effect of preventing rust and improving aesthetic appearance.
図面は本発明の一実施例を示し、第１図はカップ状体の
縦断面図、第２図は冷間鍛造金型の部分拡大平面図、第
３図、第４図、第５図は冷間鍛造過程説明用縦断面図、
第４ａ図は第４図の要部拡大縦断面図、第４ｂ図は第４
ａ図のＡ−Ａ線断面図、第６図、第７図は冷間調造にお
ける材料の流動説明用部分平面図である。
２・・・周壁部、３・・・カップ状体、６・・・パンチ
、７・・・ダイス、８・・・パンチの山部、９・・・パ
ンチの谷部、１０・・・円筒面、１１・・・ダイスの谷
部、１２・・・ダイスの山部、１３・・・型部分、１４
・・・円錐状斜面。
代理人 弁理士 祐用尉−外１名
第１図
第２図
第３図
第４図
第４０図 第４ｂ図
第５図
第６図
第７図The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view of a cup-shaped body, FIG. 2 is a partially enlarged plan view of a cold forging die, and FIGS. 3, 4, and 5 are Longitudinal cross-sectional view for explaining the cold forging process,
Figure 4a is an enlarged vertical cross-sectional view of the main part of Figure 4, and Figure 4b is an enlarged longitudinal cross-sectional view of the main part of Figure 4.
The sectional view taken along the line A--A in Figure A, and Figures 6 and 7 are partial plan views for explaining the flow of material during cold preparation. 2... Peripheral wall portion, 3... Cup-shaped body, 6... Punch, 7... Die, 8... Peak portion of punch, 9... Valley portion of punch, 10... Cylindrical Surface, 11...Dice trough, 12...Dice peak, 13...Mold part, 14
...conical slope. Agent: Patent attorney Yuyoto - 1 other person Figure 1 Figure 2 Figure 3 Figure 4 Figure 40 Figure 4b Figure 5 Figure 6 Figure 7
Claims (1)
し溶融亜鉛又は亜鉛メッキによる被膜処理により固形潤
Ｐｕｔ被膜を形成したカップ状体を、前記歯形部の内面
形状に適合する山部と谷部とを有するパンチと、周壁部
が嵌入する上部円筒面及び前記山部と谷部に対し周壁部
肉厚より小なる間隙をもって相対する谷部と山部を形成
した下部の型部分及び前記円筒面と該型部分との間に形
成した円錐状斜面を有するダイスとを用いて１回踏間加
圧し、周壁部が円錐状斜面を通過するときに円錐状斜面
により周壁部に加わる直径方向の圧力によって周壁部を
歯形部に成形することを特徴とする歯付ベルト用板金製
プーリの製造方法。Sheet metal toothed bell] - A cup-shaped body that has a peripheral wall that becomes the toothed part of the pulley and has a solid wet put coating formed by coating treatment with hot-dip zinc or galvanizing, is fitted with a toothed bell that matches the inner shape of the toothed part. a punch having a part and a trough, an upper cylindrical surface into which the peripheral wall part is fitted, and a lower mold part forming a trough and a crest that face the crest and trough with a gap smaller than the wall thickness of the peripheral wall. and a die having a conical slope formed between the cylindrical surface and the mold part, and pressurize once for one step, and when the peripheral wall passes through the conical slope, pressure is applied to the peripheral wall by the conical slope. A method for manufacturing a sheet metal pulley for a toothed belt, characterized in that a peripheral wall portion is formed into a toothed portion by diametrical pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17944184A JPS6096344A (en) | 1984-08-30 | 1984-08-30 | Production of sheet metal pulley for toothed belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17944184A JPS6096344A (en) | 1984-08-30 | 1984-08-30 | Production of sheet metal pulley for toothed belt |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2995181A Division JPS57177457A (en) | 1981-03-04 | 1981-03-04 | Production method of pulley for toothed belt made of metal plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6096344A true JPS6096344A (en) | 1985-05-29 |
| JPH0349651B2 JPH0349651B2 (en) | 1991-07-30 |
Family
ID=16065912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17944184A Granted JPS6096344A (en) | 1984-08-30 | 1984-08-30 | Production of sheet metal pulley for toothed belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6096344A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63230245A (en) * | 1987-03-16 | 1988-09-26 | Aida Eng Ltd | Die for forming grooved cup |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57170843U (en) * | 1981-02-23 | 1982-10-27 |
-
1984
- 1984-08-30 JP JP17944184A patent/JPS6096344A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57170843U (en) * | 1981-02-23 | 1982-10-27 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63230245A (en) * | 1987-03-16 | 1988-09-26 | Aida Eng Ltd | Die for forming grooved cup |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0349651B2 (en) | 1991-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4876876A (en) | Dies for forging gear-shaped part made of sheet metal | |
| JPS5854898B2 (en) | Manufacturing method of V-ribbed pulley | |
| JPH029218B2 (en) | ||
| JPS6096344A (en) | Production of sheet metal pulley for toothed belt | |
| JPH0142779B2 (en) | ||
| US5275046A (en) | Entrance contour design to streamline metal flow in a forging die | |
| JP3614244B2 (en) | Method for forming tapered peripheral surface of metal cup body | |
| US3732836A (en) | Method of manufacturing drawn cup bearing races with crowned pathways | |
| JPH0472624B2 (en) | ||
| US4689982A (en) | Method for making a cage and the cage produced thereby | |
| JPS6466035A (en) | Production of doweled piston | |
| JPH0256537B2 (en) | ||
| JPS63192529A (en) | Manufacture of tooth profile product with boss | |
| JPS5911374B2 (en) | Manufacturing method of toothed pulley for engine timing belt | |
| JPH0256538B2 (en) | ||
| JP2002001449A (en) | Sprocket made of steel plate and its manufacturing method | |
| JPS5978737A (en) | Production of plateworked pulley | |
| US4398329A (en) | Roller skate bearing | |
| JPH01113147A (en) | Forging die for metal plate made part of gear shape | |
| JPH0839162A (en) | Pressing method for external gear and internal gear for gear pump | |
| JPH0510984Y2 (en) | ||
| JPH0159056B2 (en) | ||
| JPWO2000070243A1 (en) | Sheet metal poly V pulley and its manufacturing method | |
| JPS63248520A (en) | Method for forming outer diameter corner part in cup-like body | |
| KR100345751B1 (en) | method of manufacturing a roll-forming pulley for water-pump |