JPH0142779B2 - - Google Patents
Info
- Publication number
- JPH0142779B2 JPH0142779B2 JP2995181A JP2995181A JPH0142779B2 JP H0142779 B2 JPH0142779 B2 JP H0142779B2 JP 2995181 A JP2995181 A JP 2995181A JP 2995181 A JP2995181 A JP 2995181A JP H0142779 B2 JPH0142779 B2 JP H0142779B2
- Authority
- JP
- Japan
- Prior art keywords
- peripheral wall
- cup
- pulley
- wall portion
- trough
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000001050 lubricating effect Effects 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- 238000010273 cold forging Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 3
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 3
- 229910000165 zinc phosphate Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- SCYYUUINVKYGRP-UHFFFAOYSA-K P(=O)([O-])([O-])[O-].[Zn+2].[Mn+2] Chemical compound P(=O)([O-])([O-])[O-].[Zn+2].[Mn+2] SCYYUUINVKYGRP-UHFFFAOYSA-K 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H55/44—Sheet-metal pulleys
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
- Pulleys (AREA)
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、特に冷間鍛造によつてプーリ歯形部を１
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 of manufacturing a sheet metal pulley for a toothed belt, and particularly to a method for manufacturing a pulley tooth profile by cold forging.
It is related to the manufacturing method in which the product is formed in the process.
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、板金素材から打ち抜いたブランク
をカツプ状に絞り加工し、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、例えば溶融亜鉛又は亜鉛メ
ツキによる潤滑被膜処理はカツプ状に絞り加工し
たのちに行つてもよいが、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 to four more times to form the tooth shape. A drawing method was used to form the part. A lubricating coating treatment that is effective for drawing, such as molten zinc or galvanizing, may be performed after drawing into a cup shape, but it can be done at a low cost if it is performed 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、しかも金型の
焼付き、かじり等によつて金型寿命が短くなるば
かりでなく、歯の表面粗さの抵下により歯付ベル
トの寿命が短くなるという欠点があつた。 However, the conventional drawing method not only increases man-hours and mold costs, but also has low tooth precision.Moreover, it not only shortens the mold life due to mold seizure and galling, but also causes tooth surface roughness. The problem was that the life of the toothed belt was shortened due to the drop in the length of the toothed belt.
本発明の目的は、カツ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、もつて従来の上
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.
本発明の歯付ベルト用プーリ（以下単にプーリ
と称する）を製造するには、先づ冷間鍛造に適す
る素材鉄板又はブランクに前記潤滑被膜処理をし
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とを有するカツプ状体３
に加圧する。なお、前記素材鉄板又はブランクを
カツプ状体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、このトリミングは歯形部
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。 In order to manufacture the toothed belt pulley of the present invention (hereinafter simply referred to as a pulley), first, a steel plate or blank suitable for cold forging is treated with the lubricating coating described above to form a solid lubricating coating, and the blank is squeezed. A cup-shaped body 3 having a raised bottom portion 1 and a peripheral wall portion 2 which is to be processed to form a pulley tooth profile as shown in FIG.
Pressure is applied. 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 edges of the peripheral wall portion 2 are trimmed, but this trimming is not necessarily necessary for forming the tooth profile. 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di及び外径d0は、第２図に示す
ように、diがプーリ歯部４の内径d1より0.1〜0.2
mm程度大きく、d0が歯部４の外径d2より1.2mm程
度大となるように定めておく。 As shown in FIG. 2, the inner diameter d i and outer diameter d 0 of the peripheral wall portion 2 are such that d i is 0.1 to 0.2 smaller than the inner diameter d 1 of the pulley tooth portion 4.
mm, and d 0 is set to be approximately 1.2 mm larger than the outer diameter d 2 of the tooth portion 4.
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、カツプ状体３をパンチ６とダイス７
とにより冷間鍛造をする。冷間鍛造時の金型との
摩擦を減ずるため、カツプ状体３のりん酸塩被膜
に石鹸水を塗布して金属石鹸を生成させれば、極
圧状態に対して堅牢な潤滑性を保持させることが
できる。 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 cut into a punch 6 and a die 7.
Cold forging is performed. In order to reduce friction with the die during cold forging, soapy water is applied to the phosphate coating of the cup-shaped body 3 to generate metal soap, which maintains robust lubricity under extreme pressure conditions. can be done.
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と山
部１２との間に形成した高位円錐状斜面１４及び
該円錐状斜面１４より低く円筒面１０と谷部１１
との間に形成した低位円錐状斜面１４′を有する。
しかして、型部分１３とパンチ６との間〓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、カツプ状体底部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 portion 8 and a trough portion 9 on the outer circumferential surface of a cylindrical body that match the inner shape of the tooth portion 4 and the tooth bottom portion 5, and the die 7 has an upper cylindrical surface 10 into which the peripheral wall portion 2 is fitted. , a mold part 13 having a trough part 11 and a crest part 12 formed below and adapted to the outer surface shapes of the tooth part 4 and the tooth bottom part 5; A conical slope 14 and a cylindrical surface 10 and a valley portion 11 lower than the conical slope 14
The lower conical slope 14' is formed between the lower conical slope 14' and the lower conical slope 14'.
Therefore, the length t between the mold portion 13 and the punch 6 is determined to be approximately 0.5 mm smaller than the thickness of the peripheral wall portion 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、カツプ状体３にリン酸塩被膜を形成し、
これをカウンタパンチ１５上に載せ、パンチ上に
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
１４，１４′により直径が短縮され、更に歯底部
５に相当する部分が、山部１２の上端における斜
面１４の部分によつて中心方向に押し込まれ、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、歯部４となる部分が谷
部１１の上端の斜面１４′により中心方向に押し
込まれて、周壁部２はパンチ６と型部分１３との
間〓内に押し込まれていく。 First, a phosphate coating is formed on the cup-shaped body 3,
This is placed on the counter punch 15, placed on the punch, 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 slopes 14, 14' under the friction-reducing effect of the solid lubricant coating, and furthermore, the portion corresponding to the tooth bottom portion 5 is reduced in diameter to a ridge. The section 12 is pressed inward by the sloped surface 14 at its upper end and first preformed into the shape shown in FIG. 4b. When the punch 6 further descends, the part that will become the tooth part 4 is pushed toward the center by the slope 14' at the upper end of the valley part 11, and the peripheral wall part 2 is pushed into the space between the punch 6 and the mold part 13. go.
上記した如く間〓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
じ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）、冷間鍛造を
完了する。 As mentioned above, since the distance 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 it are the same as the peaks 8 and troughs 9 of the punch 6 and the mold part 13. Due to the squeezing action between the valleys 11 and the peaks
As shown in the figure, some of the material is deformed while flowing in the direction of the dashed arrow, and is formed into desired shapes of the tooth portion 4, tooth bottom portion 5, and tooth side portion 16 (FIG. 5), completing the cold forging.
冷間鍛造完了品に所要の軸孔、取付孔及びノツ
ク孔等を打ぬいたのち、防錆処理をしてプーリを
完成する。 After punching the required shaft holes, mounting holes, notch holes, etc. into the cold-forged product, the pulley is completed by applying anti-corrosion treatment.
リン酸塩被膜処理法には、大別してリン酸マン
ガン法、リン酸マンガン亜鉛法、リン酸亜鉛法、
リン酸亜鉛石灰法、リン酸鉄法等があるが、リン
酸亜鉛法が最も優れている。 Phosphate film treatment methods can be roughly divided into manganese phosphate method, manganese zinc phosphate method, zinc phosphate method,
There are zinc phosphate lime methods, iron phosphate methods, etc., but the zinc phosphate method is the best.
本発明は、上記の通り冷間鍛造に適するリン酸
塩被膜処理によつて形成した固形潤滑被膜を有す
るカツプ状体の周壁部を、冷間鍛造によりプーリ
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長
く、また焼付、かじり等がないため、プーリ歯形
部の表面が滑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
防錆及び美貌が良好となる付加効果がある。 In the present invention, as described above, the peripheral wall of the cup-shaped body having the solid lubricating coating formed by the phosphate coating treatment suitable for cold forging is processed into the pulley tooth profile by cold forging. In machining, instead of several steps required to form the pulley tooth profile, only one forming process is required, which not only significantly reduces man-hours but also provides good forming accuracy.Furthermore, the solid lubricating film has a good lubrication effect. Therefore, the life of the cold forging mold is long, and since there is no seizure or galling, the surface of the pulley tooth profile is smooth, which has the effect of improving the life of the toothed belt. Note that zinc coating treatment has the additional effect of improving rust prevention and good appearance.
図面は本発明の一実施例を示し、第１図はカツ
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４ａ図のＡ―Ａ線断面
図、第６図、第７図は冷間鍛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…カツプ状体、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…高位円錐状
斜面、１４′…低位円錐状斜面。
The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal cross-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 A longitudinal sectional view for explaining the cold forging process, Fig. 4a is an enlarged longitudinal sectional view of the main part of Fig. 4, Fig. 4b is a sectional view taken along the line A--A of Fig. 4a, and Figs. 6 and 7 are cold forging. It is a partial plan view for explaining the flow of material in forging. 2... Peripheral wall portion, 3... Cup-shaped body, 6... Punch, 7
...Die, 8...Top of punch, 9...Trough of punch, 10...Cylindrical surface, 11...Trough of die, 12...
Mountain part of the die, 13... mold part, 14... high conical slope, 14'... low conical slope.
Claims (1)
壁部２を有しリン酸塩被膜処理により固形潤滑被
膜を形成したカツプ状体３を、前記歯形部の内面
形状に適合する山部８と谷部９とを有するパンチ
６と、周壁部２が嵌入する上部円筒面１０及び山
部８と谷部９に対し周壁部２の肉厚より小なる間
隙をもつて夫々相対する谷部１１と山部１２とを
形成した下部の型部分１３及び円筒面１０と型部
分１３の谷部１１と山部１２の各上端との間に
夫々形成した高位円錐状斜面１４及びこれより低
い低位円錐状斜面１４′を有するダイス７とを用
いて１回冷間加圧し、周壁部２が高位円錐状斜面
１４及び低位円錐状面１４′を通過するときに該
円錐状斜面１４，１４′により周壁部２に加わる
半径方向の圧力によつて周壁部２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。1. A cup-shaped body 3 having a peripheral wall portion 2 which becomes a toothed portion of a pulley for a toothed belt made of sheet metal and having a solid lubricating coating formed thereon by phosphate coating treatment is formed into a cup-shaped body 3 with a peak portion 8 that matches the inner surface shape of the toothed portion. A punch 6 having a trough 9, an upper cylindrical surface 10 into which the peripheral wall 2 is fitted, and a trough 11 that faces the crest 8 and the trough 9 with a gap smaller than the wall thickness of the peripheral wall 2, respectively. The lower mold part 13 and the cylindrical surface 10 which formed the peak part 12, the high conical slope 14 formed between the valley part 11 of the mold part 13 and each upper end of the peak part 12, and the lower conical shape lower than this. Cold pressurization is performed once using a die 7 having an inclined surface 14', and when the peripheral wall portion 2 passes through the higher conical slope 14 and the lower conical surface 14', the peripheral wall portion is 1. A method for manufacturing a sheet metal pulley for a toothed belt, characterized in that a peripheral wall portion 2 is formed into a toothed portion by applying radial pressure to the toothed belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2995181A JPS57177457A (en) | 1981-03-04 | 1981-03-04 | Production method of pulley for toothed belt made of metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2995181A JPS57177457A (en) | 1981-03-04 | 1981-03-04 | Production method of pulley for toothed belt made of metal plate |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17944184A Division JPS6096344A (en) | 1984-08-30 | 1984-08-30 | Production of sheet metal pulley for toothed belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57177457A JPS57177457A (en) | 1982-11-01 |
| JPH0142779B2 true JPH0142779B2 (en) | 1989-09-14 |
Family
ID=12290289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2995181A Granted JPS57177457A (en) | 1981-03-04 | 1981-03-04 | Production method of pulley for toothed belt made of metal plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57177457A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60263776A (en) * | 1984-06-12 | 1985-12-27 | Tsubakimoto Chain Co | Sheet metal pulley for toothed belt and method of manufacturing pulley |
| FR2661965B1 (en) * | 1990-05-10 | 1993-10-29 | Guy Carpentier | METHOD FOR MANUFACTURING A NOTCHED PULLEY AND NOTCHED PULLEY OBTAINED BY SAID METHOD. |
| JP4706252B2 (en) * | 2004-12-22 | 2011-06-22 | 日本精工株式会社 | Pulley manufacturing method |
-
1981
- 1981-03-04 JP JP2995181A patent/JPS57177457A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57177457A (en) | 1982-11-01 |
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