JPH0331536B2 - - Google Patents
Info
- Publication number
- JPH0331536B2 JPH0331536B2 JP57046108A JP4610882A JPH0331536B2 JP H0331536 B2 JPH0331536 B2 JP H0331536B2 JP 57046108 A JP57046108 A JP 57046108A JP 4610882 A JP4610882 A JP 4610882A JP H0331536 B2 JPH0331536 B2 JP H0331536B2
- Authority
- JP
- Japan
- Prior art keywords
- shaped material
- blade
- disc
- die
- gear
- 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
- 238000001125 extrusion Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 5
- 230000003028 elevating effect Effects 0.000 description 4
- 238000009497 press forging Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/30—Making machine elements wheels; discs with gear-teeth
Description
【発明の詳細な説明】 この発明は歯車の押出し成形方法に関する。[Detailed description of the invention] This invention relates to a method for extruding gears.
従来、成形用の刃（内歯型）を有するダイスに
一つの素材を途中まで押し込んだ後に、その一つ
の素材の上に他の素材を載せ、これら両素材をダ
イスに押し込むことにより、先の素材の外周部分
に外歯を成形する歯車の押出し成形方法として
は、例えば米国特許第3910091号明細書や特開昭
56−45209号公報に開示されているような方法が
ある。これらの方法にみられるように、素材を成
形用の刃を有するダイスに押し込み、通過させて
歯車状に成形する場合、例えば第１図に示すよう
に、歯元円直径Ｄが歯幅寸法Ｗと等しいか、ある
いは歯幅寸法Ｗよりも僅かに大きい歯車１を成形
するときは余り問題はないが、第２図に示すよう
に歯元円直径D1が歯幅寸法W1よりも比較的大き
い歯車２を成形するときは、素材の歯形以外の部
分の組織の押出し方向への流動が、ダイスの刃と
の間で摩擦抵抗を受ける歯形部分の組織の同方向
への流動に比して速いため、第３図に誇張して示
すように、歯形以外の部分３が歯形部分４よりも
押出し方向（矢印Ａ方向）へ突出したいびつな歯
車５が出来上るといつた問題点があつた。 Conventionally, after one material is pushed halfway into a die with a forming blade (internal tooth type), another material is placed on top of that one material, and both materials are pushed into the die to form the previous material. Examples of gear extrusion molding methods in which external teeth are formed on the outer periphery of the material are disclosed in U.S. Pat.
There is a method as disclosed in Japanese Patent No. 56-45209. As seen in these methods, when the material is forced into a die with a forming blade and formed into a gear shape by passing it through, for example, as shown in FIG. There is not much problem when forming a gear 1 that is equal to or slightly larger than the face width dimension W, but as shown in Fig. 2, the tooth root diameter D 1 is relatively larger than the face width dimension W 1 . When molding a large gear 2, the flow of the tissue in the part other than the tooth profile of the material in the extrusion direction is compared to the flow in the same direction of the tissue in the tooth profile part that receives frictional resistance between it and the die blade. Because of the high speed, there was a problem that, as exaggeratedly shown in FIG. 3, a distorted gear 5 was created in which the part 3 other than the tooth profile protruded further in the extrusion direction (in the direction of arrow A) than the tooth profile part 4. .
この発明は、このような従来の問題点に着目し
てなされたもので、新たな円盤状素材を、円周面
に円盤状素材の歯車を所定の歯元円直径に成形す
るために所定の内径を有する成形用の刃を具えた
ダイスの該刃に付着したままとなつている、先に
投入した円盤状素材に重ねて投入し、マンドレル
を該新たに投入した円盤状素材及び該先に投入し
た円盤状素材の双方に予め設けてある両中心軸孔
に挿入し、前記先に投入した円盤状素材の底面に
前記刃の内径よりも僅かに小さい外径を有するカ
ウンターパンチを当接させ、該カウンターパンチ
によりスリーブパンチが新たに投入した円盤状素
材に押圧力を付与するのと同時に先に投入した円
盤状素材に背圧を付与するとともに、その背圧に
抗して、該スリーブパンチにより、前記新たに投
入した円盤状素材を介して、前記スリーブパンチ
の先端が前記刃に近接する位置に来るまで、前記
先に投入した円盤状素材を押圧することにより、
前記新たに投入した円盤状素材を半加工してダイ
スの刃に付着した状態にするとともに、前記先に
投入した円盤状素材を押出し成形することを特徴
とする歯車の押出し成形方法により、上記問題点
を解決することを目的としている。 This invention was made by paying attention to such conventional problems, and in order to form a gear of the disc-shaped material on the circumferential surface to a predetermined root diameter, a new disc-shaped material is used. The die is equipped with a molding blade having an inner diameter, and the material is placed over the previously introduced disk-shaped material that remains attached to the blade, and the mandrel is placed over the newly introduced disk-shaped material and the tip. A counter punch having an outer diameter slightly smaller than the inner diameter of the blade is brought into contact with the bottom surface of the previously introduced disk-shaped material by inserting it into both center shaft holes provided in advance in both of the disk-shaped materials introduced. At the same time, the counter punch applies a pressing force to the newly introduced disc-shaped material, and at the same time applies back pressure to the previously introduced disc-shaped material, and against the back pressure, the sleeve punch By pressing the previously introduced disk-shaped material through the newly introduced disk-shaped material until the tip of the sleeve punch comes to a position close to the blade,
The above-mentioned problem can be solved by the gear extrusion molding method, which is characterized in that the newly introduced disk-shaped material is semi-processed so that it adheres to the blade of the die, and the previously introduced disk-shaped material is extruded. The purpose is to resolve the issue.
以下、この発明を図面に基づいて説明する。第
４，５図はこの発明に係る歯車の押出し成形方法
を実施する場合のプレス鍛造型の一実施例を示す
図である。図中、１１はプレス機のボルスタＢ上
に設けられたホルダ１２の上に固定されたダイス
であり、このダイス１１のダイス孔１３の周面に
は歯形成形用の刃１４が設けてあり、この刃１４
は後述する円盤状歯車素材２４に歯元円直径Ｐの
歯を形成するための所定の内径を有している。１
５はダイス１１上に載置されたコンテナである。
このコンテナ１５はダイス１１のダイス孔１３と
同径の貫通孔１６を有しており、該貫通孔１６が
ダイス１１のダイス孔１３と同心になるような位
置関係で、外周に焼き嵌めされた補強リング１７
によつてダイス１１と一体的に固定されている。
１８はダイス１１およびコンテナ１５の上方で昇
降可能な前記プレス機の昇降部（図示省略）に取
付けられ、ダイス１１のダイス孔１３およびコン
テナ１５の貫通孔１６に同心に進退可能なマンド
レルである。１９は前記プレス機の前記マンドレ
ル１８が取付けられている昇降部とは別の昇降部
に取付けられるとともに、マンドレル１８の外周
に摺動可能に嵌装されマンドレル１８同様にダイ
ス１１のダイス孔１３およびコンテナ１５の貫通
孔１６に同心に進退可能なスリーブパンチであ
る。２０は前記プレス機のボルスタを貫通し、図
示省略した昇降装置に連結されて昇降可能な円柱
ピンであり、２１は円柱ピン２０の外周に固定さ
れ、その先端部２２が円柱ピン２０の先端よりも
上方に突出している円筒形のカウンターパンチで
ある。このカウンターパンチ２１は内径Ｍが円盤
状歯車素材２４の中心軸孔２５の直径に略等し
く、その外径Ｎは成形される歯車の歯元円直径Ｐ
よりも幾分小さくなつており、円柱ピン２０とと
もに昇降するとき、前記ダイス１１のダイス孔１
３内に押し出し側から同心に進退可能となつてい
る。 The present invention will be explained below based on the drawings. FIGS. 4 and 5 are diagrams showing an embodiment of a press forging die for carrying out the gear extrusion molding method according to the present invention. In the figure, 11 is a die fixed on a holder 12 provided on the bolster B of the press machine, and a tooth forming blade 14 is provided on the circumferential surface of the die hole 13 of this die 11. This blade 14
has a predetermined inner diameter for forming teeth with root circle diameter P on a disc-shaped gear material 24, which will be described later. 1
5 is a container placed on the dice 11.
This container 15 has a through hole 16 having the same diameter as the die hole 13 of the die 11, and is shrink-fitted to the outer periphery in a positional relationship such that the through hole 16 is concentric with the die hole 13 of the die 11. Reinforcement ring 17
It is integrally fixed to the die 11 by.
Reference numeral 18 denotes a mandrel that is attached to an elevating section (not shown) of the press machine that can be raised and lowered above the die 11 and the container 15, and that can move concentrically into and out of the die hole 13 of the die 11 and the through hole 16 of the container 15. Reference numeral 19 is attached to an elevating part of the press machine that is different from the elevating part to which the mandrel 18 is attached, and is slidably fitted around the outer periphery of the mandrel 18, and similarly to the mandrel 18, the die hole 13 of the die 11 and This is a sleeve punch that can move concentrically into and out of the through hole 16 of the container 15. 20 is a cylindrical pin that passes through the bolster of the press machine and can be raised and lowered by being connected to an elevating device (not shown); 21 is fixed to the outer periphery of the cylindrical pin 20; It is also a cylindrical counter punch that protrudes upward. The counter punch 21 has an inner diameter M that is approximately equal to the diameter of the center shaft hole 25 of the disc-shaped gear material 24, and an outer diameter N of the counter punch 21 that is the diameter P of the root circle of the gear to be formed.
The die hole 1 of the die 11 is slightly smaller than the cylindrical pin 20 when moving up and down together with the cylindrical pin 20.
3. It is possible to advance and retreat concentrically from the extrusion side.
以上のような構成のプレス鍛造型２６におい
て、マンドレル１８およびスリーブパンチ１９を
上昇させた後、ダイス孔１３に前記素材２４を１
個挿入する。この素材２４はその下端が刃１４の
上端（案内部）に当接した状態で停止する。この
とき、円柱ピン２０およびカウンターパンチ２１
はダイス１１の下方で停止している。次いで、マ
ンドレル１８とスリーブパンチ１９とを下降さ
せ、マンドレル１８を素材２４の中心軸孔２５に
嵌入させる。次に、円柱ピン２０を上昇させ、カ
ウンターパンチ２１をダイス孔１３内へ下方、す
なわち押し出し側、から挿入する。ダイス孔１３
内に挿入されたカウンターパンチ２１は前記素材
２４の下端面に当接する。このカウンターパンチ
２１が素材２４の下端面に当接するのと時を同じ
くして、スリーブパンチ１９が素材２４の上端面
に当接する。そして、両パンチ１９，２１に互い
に対抗するごとく圧力を加える。すると、スリー
ブパンチ１９はカウンターパンチ２１によつて加
えられる背圧に抗してカウンターパンチ２１を押
し下げながら、その下端部がダイス孔１３の刃１
４の上端に近接する位置まで素材２４をダイス孔
１３内に圧入する。次に、該素材２４に対する正
圧及び背圧を解除した後、円柱ピン２０共々カウ
ンターパンチ２１を下降させて素材２４から離間
させ、マンドレル１８とスリーブ１９とを上昇さ
せダイス孔１３から抜き出す。そして、ダイス孔
１３内に新たな素材２４ａを１個挿入する。次い
で、マンドレル１８を後から挿入した素材２４ａ
の中心軸孔２５ａおよび先に挿入してある素材２
４の中心軸孔２５に嵌入させるとともに、スリー
ブパンチ１９をも下降させて新たに投入した素材
２４ａに当接させる。次に、円柱ピン２０を上昇
させ、カウンターパンチ２１を再び先に挿入した
素材２４の下端面に当接させ背圧を加える。この
カウンターパンチ２１による背圧の付与と同時
に、スリーブパンチ１９にも圧力をかけ、該パン
チ１９が該背圧に抗して後から挿入した素材２４
ａを該スリーブパンチ１９の下端部がダイス孔１
３の刃１４の上端に近接する位置までダイス孔１
３内に圧入する。その結果、後から挿入した素材
２４ａを介してスリーブ１９に押圧された先に挿
入してある素材２４は、第５図に示すように完全
に歯形２７が形成された歯車の状態でダイス孔１
３から押出され、後から挿入した素材２４ａは半
加工されてダイスの刃１４に付着した状態とな
る。なお、この完全に歯形が形成された歯車は押
出し成形時にスリーブパンチ１９による押圧力の
付与と同時にカウンターパンチ２１によつて歯形
以外の部分に背圧が加えられているため、押出し
開始直後に円盤状素材が急激に押出されることが
ないとともに、当該部分の組織がダイスの刃との
間で摩擦抵抗を受ける歯形部分の組織よりも速く
軸方向に流動することがない。したがつて、平坦
で正常な形状の歯車となつている。また、カウン
ターパンチ２１の外径Ｎを形成される円盤状歯車
素材２４の歯車の歯元円直径Ｐよりも僅かに小さ
く形成しているため、カウンターパンチ２１と刃
１４の間に僅かな隙間を形成することができる。
このため、円盤状歯車素材２４の押出し時に素材
２４を該隙間に逃がし、歯車をダイス１１に喰い
付きにくくして押出し抵抗を軽減させることがで
き、歯車の成形精度を向上させることができる。 In the press forging die 26 configured as described above, after the mandrel 18 and the sleeve punch 19 are raised, the material 24 is placed in the die hole 13.
Insert. The material 24 stops with its lower end in contact with the upper end (guide portion) of the blade 14. At this time, the cylindrical pin 20 and the counter punch 21
is stopped below the die 11. Next, the mandrel 18 and the sleeve punch 19 are lowered to fit the mandrel 18 into the central shaft hole 25 of the material 24. Next, the cylindrical pin 20 is raised and the counter punch 21 is inserted into the die hole 13 from below, that is, from the extrusion side. Dice hole 13
The counter punch 21 inserted therein comes into contact with the lower end surface of the material 24. At the same time that the counter punch 21 comes into contact with the lower end surface of the material 24, the sleeve punch 19 comes into contact with the upper end surface of the material 24. Then, pressure is applied to both punches 19 and 21 so as to oppose each other. Then, the sleeve punch 19 presses down the counter punch 21 against the back pressure applied by the counter punch 21, and its lower end touches the blade 1 of the die hole 13.
The material 24 is press-fitted into the die hole 13 to a position close to the upper end of the die hole 13. Next, after releasing the positive pressure and back pressure on the material 24, the counter punch 21 and the cylindrical pin 20 are lowered and separated from the material 24, and the mandrel 18 and sleeve 19 are raised and extracted from the die hole 13. Then, one new material 24a is inserted into the die hole 13. Next, the material 24a into which the mandrel 18 was inserted later
center shaft hole 25a and the material 2 inserted earlier
At the same time, the sleeve punch 19 is also lowered and brought into contact with the newly introduced material 24a. Next, the cylindrical pin 20 is raised, and the counter punch 21 is again brought into contact with the lower end surface of the previously inserted material 24 to apply back pressure. At the same time as the back pressure is applied by the counter punch 21, pressure is also applied to the sleeve punch 19, and the punch 19 resists the back pressure to release the material 24 inserted later.
a, the lower end of the sleeve punch 19 is the die hole 1.
Die hole 1 to a position close to the upper end of blade 14 of No. 3
Press fit into 3. As a result, the previously inserted material 24, which is pressed against the sleeve 19 via the later inserted material 24a, enters the die hole in the state of a gear in which the tooth profile 27 is completely formed, as shown in FIG.
The material 24a extruded from 3 and inserted later is semi-processed and attached to the die blade 14. It should be noted that during extrusion molding, this gear with a perfectly formed tooth profile has a pressing force applied by the sleeve punch 19 and at the same time back pressure is applied to the part other than the tooth profile by the counter punch 21. The shaped material is not extruded rapidly, and the structure of this part does not flow in the axial direction faster than the structure of the toothed part which receives frictional resistance with the die blade. Therefore, the gear is flat and has a normal shape. In addition, since the outer diameter N of the counter punch 21 is made slightly smaller than the root circle diameter P of the gear of the disc-shaped gear material 24 to be formed, a slight gap is created between the counter punch 21 and the blade 14. can be formed.
Therefore, when extruding the disc-shaped gear material 24, the material 24 is allowed to escape into the gap, making it difficult for the gear to bite into the die 11, reducing extrusion resistance, and improving the molding accuracy of the gear.
その後、再びカウンターパンチ２１を下降させ
るとともにマンドレル１８とスリーブ１９とを上
昇させ、ダイス孔１３には前記後から挿入され、
半加工された素材２４ａの上に新たな素材を１個
挿入して前述したと同様の作動を繰り返す。 Thereafter, the counter punch 21 is lowered again and the mandrel 18 and sleeve 19 are raised, and the die hole 13 is inserted from the rear.
A new material is inserted on top of the semi-processed material 24a, and the same operation as described above is repeated.
なお、押出し成形する歯形は平歯車やはすば歯
車の歯形のほか、スプライン歯、ラチエツト用の
歯、その他のものでもよい。 In addition to the tooth profile of a spur gear or helical gear, the tooth profile to be extruded may be a spline tooth, a ratchet tooth, or other teeth.
以上説明してきたようにこの発明によれば歯車
の押出し成形方法を、新たな円盤状素材を、円周
面に円盤状素材の歯車を所定の歯元円直径に成形
するために所定の内径を有する成形用の刃を具え
たダイスの該刃に付着したままとなつている、先
に投入した円盤状素材に重ねて投入し、マンドレ
ルを該新たに投入した円盤状素材及び該先に投入
した円盤状素材の双方に予め設けてある両中心軸
孔に挿入し、前記先に投入した円盤上素材の底面
に前記刃の内径よりも僅かに小さい外径を有する
カウンターパンチを当接させ、該カウンターパン
チによりスリーブパンチが新たに投入した円盤状
素材に押圧力を付与するのと同時に先に投入した
円盤状素材に背圧を付与するとともに、その背圧
に抗して、スリーブパンチにより、前記新たに投
入した円盤状素材を介して、前記スリーブパンチ
の先端が前記刃に近接する位置に来るまで、前記
先に投入した円盤状素材を押圧することにより、
前記新たに投入した円盤状素材を半加工してダイ
スの刃に付着した状態にするとともに、前記先に
投入した円盤状素材を押出し成形するようにした
ため、歯幅に対し歯元円直径が比較的大きい歯車
でも中央部が押出し方向に突出するようなことが
なく、平坦で正常な形状に押出し成形することが
できるという効果が得られる。また、カウンター
パンチの外径を形成される円盤状素材の歯車の歯
元円直径よりも僅かに小さく形成いているため、
カウンターパンチと歯車の歯元の間に僅かな隙間
を形成を形成することができる。このため、円盤
状素材の押出し時に円盤状素材を該隙間に逃が
し、歯車をダイスに喰い付きにくくして押出し抵
抗を軽減させることができ、歯車の成形精度を向
上させることができる。 As explained above, according to the present invention, a gear extrusion molding method is provided in which a new disc-shaped material is formed with a predetermined inner diameter on the circumferential surface in order to mold the gear of the disc-shaped material to a predetermined root circle diameter. A mandrel is placed over the previously introduced disc-shaped material that remains attached to the blade of the die equipped with a forming blade, and the mandrel is introduced onto the newly introduced disc-shaped material and the tip. A counter punch having an outer diameter slightly smaller than the inner diameter of the blade is inserted into both central shaft holes provided in advance on both sides of the disc-shaped material, and the counter punch having an outer diameter slightly smaller than the inner diameter of the blade is brought into contact with the bottom surface of the disc-shaped material that has been previously introduced. The sleeve punch applies a pressing force to the newly introduced disc-shaped material by the counter punch, and at the same time applies back pressure to the previously introduced disc-shaped material, and against the back pressure, the sleeve punch By pressing the previously introduced disk-shaped material through the newly introduced disk-shaped material until the tip of the sleeve punch comes to a position close to the blade,
The newly introduced disk-shaped material is semi-processed so that it adheres to the die blade, and the previously introduced disk-shaped material is extruded, so that the root circle diameter is compared with the tooth width. Even if the gear is large in size, the center part does not protrude in the extrusion direction, and the gear can be extruded into a flat and normal shape. In addition, since the outer diameter of the counter punch is made slightly smaller than the root circle diameter of the gear made of the disc-shaped material,
A small gap can be formed between the counter punch and the tooth root of the gear. Therefore, when extruding the disc-shaped material, the disc-shaped material escapes into the gap, making it difficult for the gear to bite into the die, reducing extrusion resistance, and improving the molding accuracy of the gear.
第１図は歯幅寸法と歯元円直径とに余り差がな
い歯車の正面断面図、第２図は歯幅寸法に対し歯
元円直径が比較的大きい歯車の正面断面図、第３
図は従来の押出し成形方法によつて成形した場合
の歯幅寸法に対し歯元円直径が比較的大きい歯車
の正面断面図、第４図および第５図はそれぞれこ
の発明に係る方法を実施している鍛造装置の一作
動状態を示す正面断面図である。
１１……ダイス、１４……ダイスの刃、１８…
…マンドレル、１９……スリーブパンチ、２１…
…カウンターパンチ、２４，２４ａ……素材、２
５，２５ａ……素材の中心軸孔。
Figure 1 is a front cross-sectional view of a gear where there is not much difference between the face width dimension and the root circle diameter, Figure 2 is a front cross-sectional view of a gear whose root circle diameter is relatively large compared to the face width dimension, and Figure 3
The figure is a front cross-sectional view of a gear having a comparatively large root circle diameter compared to the face width dimension when molded using the conventional extrusion method, and FIGS. FIG. 2 is a front sectional view showing one operating state of the forging device. 11...Dice, 14...Dice blade, 18...
...Mandrel, 19...Sleeve punch, 21...
...Counter punch, 24, 24a...Material, 2
5, 25a... Central shaft hole of the material.
Claims (1)
歯車を所定の歯元円直径に成形するために所定の
内径を有する成形用の刃を具えたダイスの該刃に
付着したままとなつている、先に投入した円盤状
素材に重ねて投入し、マンドレルを該新たに投入
した円盤状素材及び該先に投入した円盤状素材の
双方に予め設けてある両中心軸孔に挿入し、前記
先に投入した円盤状素材の底面に前記刃の内径よ
りも僅かに小さい外径を有するカウンターパンチ
を当接させ、該カウンターパンチによりスリーブ
パンチが新たに投入した円盤状素材に押圧力を付
与するのと同時に先に投入した円盤状素材に背圧
を付与するとともに、その背圧に抗して、該スリ
ーブパンチにより、前記新たに投入した円盤状素
材を介して、前記スリーブパンチの先端が前記刃
に近接する位置に来るまで、前記先に投入した円
盤状素材を押圧することにより、前記新たに投入
した円盤状素材を半加工してダイスの刃に付着し
た状態にするとともに、前記先に投入した円盤状
素材を押出し成形することを特徴とする歯車の押
出し成形方法。1. A new disc-shaped material is attached to the blade of a die equipped with a molding blade having a predetermined inner diameter in order to form a gear of the disc-shaped material to a predetermined root diameter on the circumferential surface. Insert the mandrel into both central shaft holes previously provided in both the newly introduced disk-shaped material and the previously introduced disk-shaped material. , a counter punch having an outer diameter slightly smaller than the inner diameter of the blade is brought into contact with the bottom surface of the previously introduced disk-shaped material, and the sleeve punch applies a pressing force to the newly introduced disk-shaped material by the counter punch. At the same time, a back pressure is applied to the previously introduced disc-shaped material, and against the back pressure, the tip of the sleeve punch is applied via the newly introduced disc-shaped material. By pressing the previously introduced disk-shaped material until it comes to a position close to the blade, the newly introduced disk-shaped material is semi-processed and adhered to the blade of the die, and the A gear extrusion molding method characterized by extruding a disc-shaped material that has been introduced first.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4610882A JPS58163522A (en) | 1982-03-23 | 1982-03-23 | Extruding method of gear |
| US06/467,603 US4509353A (en) | 1982-03-23 | 1983-02-18 | Method of and apparatus for forming gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4610882A JPS58163522A (en) | 1982-03-23 | 1982-03-23 | Extruding method of gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58163522A JPS58163522A (en) | 1983-09-28 |
| JPH0331536B2 true JPH0331536B2 (en) | 1991-05-07 |
Family
ID=12737789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4610882A Granted JPS58163522A (en) | 1982-03-23 | 1982-03-23 | Extruding method of gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58163522A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825087B (en) * | 2012-09-13 | 2015-11-18 | 无锡恒力标准件制造有限公司 | A kind of washing of drum type washing machine axle squeezes spline mould and extrusion process thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50123557A (en) * | 1973-07-06 | 1975-09-29 |
-
1982
- 1982-03-23 JP JP4610882A patent/JPS58163522A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50123557A (en) * | 1973-07-06 | 1975-09-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58163522A (en) | 1983-09-28 |
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