JPS5924547A - Method for working outer diameter shape of tubular member - Google Patents
Method for working outer diameter shape of tubular memberInfo
- Publication number
- JPS5924547A JPS5924547A JP13368482A JP13368482A JPS5924547A JP S5924547 A JPS5924547 A JP S5924547A JP 13368482 A JP13368482 A JP 13368482A JP 13368482 A JP13368482 A JP 13368482A JP S5924547 A JPS5924547 A JP S5924547A
- Authority
- JP
- Japan
- Prior art keywords
- outer diameter
- mold
- inner diameter
- forming
- shape
- 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.)
- Pending
Links
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
-
- 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
- B21K1/305—Making machine elements wheels; discs with gear-teeth helical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は筒状部品の外径形状加工方法に関し、特に内径
面に嵌合する押型を内径底部に押圧しながらＩ′ｉｉま
たは歯形を塑性変形によって成形するに際し、加工品の
旧料に引張力が作用するよう構成することにより、加工
限界の拡大化及び加工硝度の向上を図り得る筒状部品の
外径形状加工方法を提供するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for processing the outer diameter shape of a cylindrical part, and in particular, when forming I'ii or a tooth profile by plastic deformation while pressing a press mold that fits on the inner diameter surface to the inner diameter bottom, the present invention relates to a method for processing a cylindrical part. The present invention provides a method for machining the outer diameter shape of a cylindrical part, which can expand the machining limit and improve the machining degree by configuring the old material of the product to be subjected to a tensile force.
外径面にへりカルインボリュ−１−＋Ｎａ形を有する部
品例えば自動車用ミッション部品等、外周面に溝寸たは
歯形を有する筒状部品を製造する方法としては、最近塑
性加工による代表的なものが！Ｆ斤公昭５６−２０９４
１号公報に開示されている。この方法は素材に圧縮力を
作用させて外径面に歯車形状を塑性変形により加工する
ものであるが、この方法においては成形圧力が増大し、
歯形部には焼判などカジリが発生し易く、型寿命も低下
するという欠点がある。更に、この従来方法では寸法精
度を確保することが非常に困ｐ）１Ｇであるという欠点
もある。Recently, as a method for manufacturing cylindrical parts having groove dimensions or tooth profiles on the outer circumferential surface, such as parts having an edge cal-in volume 1-+Na shape on the outer circumferential surface, such as automobile transmission parts, plastic working has recently become a typical method. ! F. Kosho 56-2094
It is disclosed in Publication No. 1. This method applies compressive force to the material and plastically deforms the gear shape on the outer diameter surface, but in this method, the forming pressure increases,
The tooth profile has the drawback of being susceptible to galling, such as burning, and shortening the life of the mold. Furthermore, this conventional method has the disadvantage that it is extremely difficult to ensure dimensional accuracy (p) of 1G.
本発明の目的は以上説明したような従来技術の欠点を解
消し、成形する際に製品ブランクに引張応力を力えるこ
とにより拐料自体の変形抵抗を小さくし、小さい力で塑
性加工できるようにし、もって比較的小さい押型の押込
力により焼料等を生ずることなく寸法精度に優れ／こ溝
あるいは歯形を加工し得る筒状部品の外径形状加工方法
を提供することである。The purpose of the present invention is to eliminate the drawbacks of the prior art as explained above, to reduce the deformation resistance of the blank itself by applying tensile stress to the product blank during molding, and to enable plastic working with small force. Therefore, it is an object of the present invention to provide a method for machining the outer diameter shape of a cylindrical part, which allows machining grooves or tooth profiles with excellent dimensional accuracy without producing scorch or the like with a relatively small pressing force of a pressing die.
即し、本発明によれば、外径面に溝′またｉ−ｉ歯形を
有する筒状部品の外径形状加工方法において、部品の一
端部に底部を設け、筒部外周面を金型で受は開放端側よ
り内圧に嵌合する押型を内径底部に押圧し、筒部の月別
に引張り力を与えながら塑性変形によって、外径面に竹
′または歯形を成形することを４”Ｉ′徴とする筒状部
品の外径形状加工方法が提供される。That is, according to the present invention, in the method for processing the outer diameter of a cylindrical part having a groove' or an i-i tooth profile on the outer diameter surface, a bottom is provided at one end of the part, and the outer circumferential surface of the cylindrical part is formed with a mold. The receiver presses a press mold that fits into the inner pressure from the open end side to the bottom of the inner diameter, and by applying a tensile force to the cylinder part, plastic deformation is performed to form a bamboo' or tooth shape on the outer diameter surface. A method for machining the outer diameter shape of a cylindrical component is provided.
ここで、外径面に溝または歯形を崩する部品とは、製品
としての筒状１ＹＢ品に底部があるかないかは問わない
。即ち、製品が底なしの筒状部品の場合には、製品ブラ
ンクに底部を設けてｉ−き、外形形状を成形した後この
底部を除去すればよい。製品としての筒状部品が庭付製
品の場合には、この底部を利用して前述の如き本発明の
加工方法を実施することができる。Here, the component that breaks the groove or tooth profile on the outer diameter surface does not matter whether or not the cylindrical 1YB product has a bottom. That is, when the product is a bottomless cylindrical part, it is sufficient to provide a bottom part on the product blank, form the outer shape, and then remove this bottom part. When the cylindrical part as a product is a garden product, the processing method of the present invention as described above can be carried out using this bottom part.
さらに、第２の本発明によれば１．外径面に１１ケまた
は歯形を有する筒状部品の外径形状加工方法において、
部品の一端部に底部を設けると共に、底部側の外径に金
型の内径に略等しいか寸たはこれより小さい成句外径を
予め加工しておき、筒状外周面及び段刊外径而を金型で
受け、開放端側より押型を内径底部に押圧し、前部に引
張力を与えながら塑性変形によって外径面に／１１，７
−または歯形を成形することを７１！Ｊ゛徴とする筒状
部品の外径形状加工方法が提供される。このような構成
によれば、押型挿入時における製品ブランクの底面と外
周部との間に作用する局部的な圧縮応力を完全に除去す
ることができ、外径形状部のみならず荷重を受ける全範
囲において製品ブランクを引張応力状態にすることがで
きる。この、１局イ”ｔ’ ）ｔｆｆＪ記段イ；ｊ外径
を内径底部と略同じ軸方同位１凶゛またはこれより開放
端辞９の位置−まで加工してｋ〈ことが好ましい。Furthermore, according to the second invention, 1. In a method for processing an outer diameter shape of a cylindrical part having 11 teeth or teeth on the outer diameter surface,
A bottom is provided at one end of the part, and the outer diameter of the bottom side is machined in advance to have a diameter that is approximately equal to or smaller than the inner diameter of the mold, and the cylindrical outer peripheral surface and the stepped outer diameter are is received by the mold, the press mold is pressed against the inner diameter bottom from the open end side, and /11,7 is formed on the outer diameter surface by plastic deformation while applying tensile force to the front part.
- or molding the tooth profile 71! A method for processing an outer diameter shape of a cylindrical part having a J-shape is provided. With this configuration, it is possible to completely eliminate the local compressive stress that acts between the bottom surface and the outer periphery of the product blank when inserting the die, and it is possible to completely eliminate the local compressive stress that acts between the bottom surface and the outer periphery of the product blank when inserting the die, and it is possible to completely eliminate the local compressive stress that acts between the bottom surface and the outer periphery of the product blank, and not only the outer diametrical shape but also the entire area that receives the load. The product blank can be brought into a state of tensile stress within the range. It is preferable that the outer diameter of this one station is machined to approximately the same axial position as the bottom of the inner diameter or to the position of the open end 9.
以下図面を参照して本発明の詳細な説明する。The present invention will be described in detail below with reference to the drawings.
第１図は本発明の筒状部品の外径形状加工方法を実施す
るための金型装置の１’７ｉ造を例示する図である。FIG. 1 is a diagram illustrating a 1'7i structure of a mold apparatus for carrying out the method of processing the outer diameter shape of a cylindrical part according to the present invention.
第１図において、中空金型１及びノックアウトピン２は
固定台金３に対しそれぞれ固定的に取り刊けられている
。中空金型１の内径には製品ブランク４の外周面に溝ま
たは歯形を加工するだめの型５が形成されている。この
型５としては例えばへりカルインボリュート歯形が形成
される。In FIG. 1, a hollow mold 1 and a knockout pin 2 are fixedly mounted on a fixed base metal 3, respectively. A mold 5 is formed on the inner diameter of the hollow mold 1 to form grooves or tooth shapes on the outer peripheral surface of the product blank 4. As this mold 5, for example, a helical involute tooth profile is formed.
一方、上方の可動合金６に対してＶよ、スラストベアリ
ング７．７を介して押型（ポンチ）８が回転自在に護持
されている。図示の例では、前記スラストベアリング７
．７は可動合金６に固定された保持金具９内に収納保持
されている。′また、図示の例では、前記押型８はその
頭部８Ａをスラストベアリング７．７の［川でｊ夾掲す
ることにより支持されている。前記押型８の案内部８
ＩＪ ｔ−１ニガイド部旧１０の開口部１０Ａを貫通し
で案内されている。このガイド部月１０は前記固定台金
３に植立されたガイドロッド１１に沿って」二下！ｉｂ
をしａ）るようになっている。なお、ガイド部月１０と
固定台金３との間にはガイド部４′Ａ’ｌＯを元の位置
に復帰させるだめの戻しばね１２が装着されている。On the other hand, a punch 8 is rotatably supported by a thrust bearing 7.7 with respect to the upper movable alloy 6. In the illustrated example, the thrust bearing 7
．． 7 is housed and held within a holding fitting 9 fixed to the movable alloy 6. In the illustrated example, the die 8 is supported with its head 8A resting on a thrust bearing 7.7. Guide part 8 of the mold 8
The IJ t-1 is guided through the opening 10A of the old guide section 10. This guide part 10 moves along the guide rod 11 installed on the fixed base metal 3. ib
a). A return spring 12 is installed between the guide portion 10 and the fixed base metal 3 to return the guide portion 4'A'IO to its original position.
筒状部品の外径形状加工に際しては、゛まず第２図に示
す如き内径１３及び底部１４を有する１１＜１状の製品
ブランク４を中空金型１の内径の上方４９１１分で受け
、次いで、前記可動台金６紫下方に移動させて押型８に
製品ブランク４の開口端側から挿入面会させ、かつ製品
ブランク４の内径底部１５（第２図参照）を押圧し挿入
する。When processing the outer diameter shape of a cylindrical part, ``First, a product blank 4 with an 11 < 1 shape having an inner diameter 13 and a bottom part 14 as shown in FIG. 2 is received at 4911 minutes above the inner diameter of the hollow mold 1, and then, The movable base metal 6 is moved downward to be inserted into the press die 8 from the open end side of the product blank 4, and the inner diameter bottom 15 (see FIG. 2) of the product blank 4 is pressed and inserted.
即ち、第２図に示すような一端部に底部１４を有する筒
状の製品ブランク４の筒部外周部１８を金ｍ１で受ける
と共に、ブランク４の開放端側よりその内径１３に（０
８合する押型８を内径底部１４に押圧しながら、この筒
状の製品ブランク４を前記型５即ち外径面忙へりカルイ
ンボリュート歯形を成形する場合は内径へりカルインボ
リュート歯形５のヘリカルアングルに沿って製品ブラン
ク４を押型８と共に回転させながら下方へ抑圧挿入する
。この製品ブランク４の抑圧挿入はその底面が前記ノッ
クアウトビン２に当接するまで行われる。That is, the outer peripheral part 18 of the cylindrical product blank 4 having a bottom part 14 at one end as shown in FIG.
8 While pressing the fitting mold 8 against the inner diameter bottom 14, the cylindrical product blank 4 is pressed along the helical angle of the mold 5, that is, the inner diameter helical involute tooth profile 5 when molding the outer diameter surface helical involute tooth profile. The product blank 4 is compressed and inserted downward while being rotated together with the press die 8. This press-insertion of the product blank 4 is continued until its bottom surface contacts the knockout bin 2.
なお、前述の如きへりカルインボリュート歯形など軸線
に沿って傾斜した溝または歯形を成形する場合には前記
押ｐｉ’Ｊ ８と共に製品ブランク４は回転しながら抑
圧進入されるが、平歯車や通常のスプラインなど軸線方
向に直線形状の溝または歯車を成形する場合にはこれら
は回転することなく押圧進入される。In addition, when forming grooves or tooth profiles that are inclined along the axis, such as the above-mentioned helical involute tooth profile, the product blank 4 is pushed in while rotating together with the push pi'J8. When forming linear grooves or gears such as splines in the axial direction, these are pressed into the grooves without rotation.
こうして製品ブランク４の外径面に所望の形状の外径形
状が塑性変形によシ成形される。外径へりカルインボリ
ュート歯形を成形する場合には中空金型１の内径に形成
された型即ち内径ヘリカルインボリュート歯形５の形状
に対応した外径歯形が成形される。In this way, a desired outer diameter shape is formed on the outer diameter surface of the product blank 4 by plastic deformation. When molding an outer diameter helical involute tooth profile, an outer diameter tooth profile corresponding to the shape of the mold formed on the inner diameter of the hollow mold 1, that is, the inner diameter helical involute tooth profile 5 is molded.
第３図〜第５図は第１図に示した金型装置にょシ自動車
用ミッション部品としての外径へりカルインボリュート
歯車２０（ｇｌ’（５図参照）を塑性変形により成形す
る場合を例示する説明図である。Figures 3 to 5 illustrate the case of molding the outer diameter helical involute gear 20 (gl' (see Figure 5)) as an automobile transmission part by plastic deformation using the mold apparatus shown in Figure 1. It is an explanatory diagram.
この場合製品ブランク４としては第２図について説すＪ
したと同様の形状を有するブランク即ち第３図に示す如
く内径１３．底部１４．筒部外周［口１１６、筒部１８
及び段付外径２１を有するブランクが使用される。この
段付外径２１は底部側の外径に形成され、金型１の内径
（型５の内径）に略等しいかまたけこれより小さい外径
を有するものである。In this case, the product blank 4 is J
A blank having a shape similar to that shown in FIG. Bottom 14. Cylindrical part outer periphery [mouth 116, cylinder part 18
and a blank with a stepped outer diameter 21 is used. This stepped outer diameter 21 is formed on the outer diameter of the bottom side, and has an outer diameter that is approximately equal to or smaller than the inner diameter of the mold 1 (the inner diameter of the mold 5).
塑性変形による成形を行うに際してｔ」１、製品ブラン
ク４はその筒部外周面１６ｆ：中空金型１の平滑円筒状
内径面２２で受けると共に、その成句外径２１を内径へ
りカルインボリュート歯形５で受けて支持される。この
状態で、押型８を製品ブランク４の開放端ｆｌｌｌｌ
（上側）よυ内径１３内に嵌合させ、更に内径底部１５
（第２図参照）にｐ ４９させた後型５を通して製品ブ
ランク４を抑圧挿入する。押型８は回転可能に装着され
ているので、□ブランク４の外周面１Ｇにへりカルイン
ボリュート歯形２３（第４図参照）を塑性加工しながら
そのヘリカルアングルに沿って押型８と共に回転しなが
ら進入していく。When forming by plastic deformation t'1, the product blank 4 is received by the outer peripheral surface 16f of the cylindrical part: the smooth cylindrical inner diameter surface 22 of the hollow mold 1, and the outer diameter 21 of the product blank 4 is received by the inner circumference cal involute tooth profile 5. received and supported. In this state, press the mold 8 to the open end of the product blank 4.
(Upper side) υ into the inner diameter 13, and then the inner diameter bottom 15
(See FIG. 2), and then press the product blank 4 through the mold 5. Since the press die 8 is rotatably mounted, the helical involute tooth profile 23 (see Fig. 4) is plastically worked on the outer circumferential surface 1G of the blank 4 while rotating with the press die 8 along the helical angle. To go.
こうして外径面にへりカルインボリュー）１ｓｋｌ形２
３を有する成形品即ち崩↓４図に示すような成形品４Ａ
が（４７られる。次いで、この成形品４Ａを１幾械加工
により所定長さに切断すれば、第５図に示すような自動
車用ミッションギアとしての外径へりカルインボリュー
ト歯形２ｏが適当個数ずつ製造される。In this way, the outer diameter surface has a lip in volume) 1skl type 2
3, i.e. molded product 4A as shown in Fig. 4
(47).Next, by cutting this molded product 4A into a predetermined length by 1-dimensional machining, an appropriate number of outer diameter helical involute tooth profiles 2o as automobile transmission gears as shown in FIG. 5 can be manufactured. be done.
以上説明した加工方法によれば、筒部外径面１６にヘリ
カル・ｆンボリュート歯形２３を塑性加工する間、その
筒部１８の月別には引張り応力が与えられる。従って、
圧縮応力を力えながら塑性加工をしていた従来方法に比
べ、塑性加工時の材料自体の変形抵抗が小さくなシ従っ
て小さな力で塑性加工をすることができる。このため、
押型８の押し込み力が小さくなり押型の挿入が容易にな
ると共に押型の焼付を防止すると共に塑性加工部の寸法
４９度の向上を図ることができる。更に、型の寿命をも
向上させることができる。According to the processing method described above, while the helical f-volute tooth profile 23 is plastically worked on the outer diameter surface 16 of the cylindrical portion 16, tensile stress is applied to the cylindrical portion 18 on a monthly basis. Therefore,
Compared to conventional methods in which plastic working is performed while applying compressive stress, the deformation resistance of the material itself during plastic working is small, so plastic working can be performed with small force. For this reason,
The pushing force of the press die 8 is reduced, making it easier to insert the press die, preventing seizure of the press die, and improving the dimension of the plastically worked portion by 49 degrees. Furthermore, the life of the mold can also be improved.
以上の筒状部品の外径形状加工方法においては、第２図
及び第３図に示す如く、製品ブランク４の底ｊｔ１ｓ１
４側の外径に金型の内径（型５の内径）に略等しいか°
またはこれよシ小さい段付外径２１を予め加工すると共
にこの段付外径２１を内径底部１５と略同じ軸方向位置
＝！、、ｉヒはこれより開放端寄りの位置まで加工して
おけば、押型８を製品ブランクの内径に嵌合させてその
ヒタ径底部１５に押圧しながら塑性加工するに際し、底
部１４並びに該底部と筒部１８との間に作用する製品ブ
ランク４の圧縮応力を完全に除去することができ、塑性
加工の全範囲において製品ブランク４を完全な引張り応
力状態にすることができる。このような完全な引張り応
力状態を維持することにより、月別の変形抵抗を更に一
層小さくすることができ、塑性加工に要する荷重ヲ一層
小さくすることができる。In the above method for processing the outer diameter shape of a cylindrical part, as shown in FIGS. 2 and 3, the bottom jt1s1 of the product blank 4 is
Is the outer diameter of side 4 approximately equal to the inner diameter of the mold (inner diameter of mold 5)?
Alternatively, a smaller stepped outer diameter 21 is machined in advance, and the stepped outer diameter 21 is placed at approximately the same axial position as the inner diameter bottom 15 =! ,, If the i-hi is processed to a position closer to the open end than this, when the press mold 8 is fitted to the inner diameter of the product blank and plastic working is performed while pressing it against the bottom diameter bottom 15 of the product blank, the bottom 14 and the bottom The compressive stress of the product blank 4 acting between the cylindrical portion 18 and the cylindrical portion 18 can be completely removed, and the product blank 4 can be brought into a complete tensile stress state in the entire range of plastic working. By maintaining such a complete tensile stress state, the monthly deformation resistance can be further reduced, and the load required for plastic working can be further reduced.
このため、一層の押型８の押込み力の減少及び抑圧挿入
の容易化を達成でき、型の寿命もその分だけ向上させる
ことができる。Therefore, it is possible to further reduce the pushing force of the press die 8 and facilitate the press insertion, and the life of the die can be increased accordingly.
第６図は筒状部品の外径形状加工方法を従来の圧縮塑性
変形により実施した場合と本発明を適用して実施した場
合とを、加工率（横軸）に対する成形荷ＸＬ （縦軸）
の太ささて比較した試験結果を示すグラフである。Figure 6 shows the forming load XL (vertical axis) versus the processing rate (horizontal axis) for the outer diameter shape processing method of a cylindrical part using conventional compression plastic deformation and the case using the present invention.
It is a graph showing the test results comparing the thickness of .
第６図中、曲線Ｘは従来の加工方法に夷る成形荷重の大
きさを示し、曲線Ｙは本発明を適用し／こ場合の加工時
の成形荷重を示す曲線である。第６図からも明らかな如
く、本発明によれば、従来の加工方法に比べ成形荷重を
約２分の１と大巾に低減させることができる。In FIG. 6, the curve X shows the magnitude of the forming load in the conventional processing method, and the curve Y shows the forming load during processing when the present invention is applied. As is clear from FIG. 6, according to the present invention, the forming load can be significantly reduced to approximately one-half compared to conventional processing methods.
以上の説明から明らかなごとく、本発明によれば、外径
面に溝址たは歯形を有する筒状部品の外径形状を塑性変
形によシ加工する方法において、押型の押込み力を小さ
くすることにより、押型の焼付きやかじりを防止でき、
加工部の寸法ｍ度を向上させることができ、さらに、型
の寿命を向上させることができる加工方法が得られる。As is clear from the above description, according to the present invention, in a method for processing the outer diameter shape of a cylindrical part having grooves or tooth profiles on the outer diameter surface by plastic deformation, the pushing force of the pressing die is reduced. By doing so, it is possible to prevent seizure and galling of the press die.
A processing method is obtained which can improve the dimension of the processed part by m degrees and further improve the life of the mold.
第１図は本発明の方法を実施−Ｊ−るに適した成形装置
を例示する縦断面図、第２図ぐ」一本発明の方法を実施
する際に用いる製品ブランクを例示する一部截断斜視図
、第３図は本発明をノ１４用して外径へりカルインボリ
ュート歯車を刀ｊｌ造する場合の成形装置の要部を例示
する一部截１ｉａｒ斜視図、第４図は第３図の装置によ
って、１１）られる成形品の一部截断斜視図、第５図ｒ
Ｊ： ２ｎ ４図の成形品をψノ断して１４Ｇられる歯
車の斜視図、第６図は従来の加工方法と本発明による加
工方法の加工率に対する成形荷重の比較試験結果を例示
するグラフである。
１・・・中空金型、４・・・製品ブランク、５・・・型
、８・・・押型、１３・・・内径、１４・・・底部、１
５・・・内径底部、１６・・・筒部外周面（外径面）、
１８・・・筒部、２０・・・外径インボリュー１−歯車
、２１・・・段イτＪ外径。
第 ｌ 国
グ
２６
第 ２ 図
／、Ｒ
も ３ 囚
恭 ４ 国
／３
第 Ｓ 口
べ
（Ｔｏル少
＄２ 目
Ｃ
ｌθ
θ
ｌθ ２θ ３θ ４０
加 工 幸 （２ジFig. 1 is a longitudinal sectional view illustrating a molding apparatus suitable for carrying out the method of the present invention, and Fig. 2 is a partially cutaway view illustrating a product blank used in carrying out the method of the present invention. FIG. 3 is a partially cutaway perspective view illustrating the main parts of a molding device for manufacturing an outer helical involute gear using the present invention, and FIG. 4 is a partially cutaway perspective view of FIG. 3. Partially cutaway perspective view of the molded product produced by the device 11), Fig. 5r
J: 2n Fig. 4 is a perspective view of a gear subjected to 14G by cutting the molded product at ψ, and Fig. 6 is a graph illustrating the results of a comparison test of the forming load with respect to the processing rate of the conventional processing method and the processing method of the present invention. be. DESCRIPTION OF SYMBOLS 1...Hollow mold, 4...Product blank, 5...Mold, 8...Press die, 13...Inner diameter, 14...Bottom, 1
5... Inner diameter bottom, 16... Cylindrical part outer peripheral surface (outer diameter surface),
18...Cylinder part, 20...Outer diameter involute 1-gear, 21...Step I τJ outer diameter. 1st country Gu26 2nd figure/, R also 3 prisoner 4th country/3rd
Claims (1)
加工方法においで、部品の一端部に底部を設け、筒部外
周面を金型で受け、開放端Ｂ（１］より内径に嵌合する
押型を内径底部に押圧し、前部の材料に引張力を与えな
がら塑性変形によって外径面に昔まだは歯形を形成する
ことを特徴とする筒状部品の外径形状加工方法。 ２、外径面に溝′または歯形を有する筒状部品の外径形
状加工方法において、部品の一端部に底部を設けるとと
もに底部側の外径に金型の内径に略等しいか′またはこ
れよυ小さい段イτＪ外径を予め加工しでおき、前部外
周面および段刊外径面を金型で受け、開放端側より押型
を内径底部に押圧し、前部に引張力を与えながら塑性変
形によって外径面に溝または歯形を形成すること′ｆ：
４’イ徴とする筒状部品の外径形状加工方法。 ３、前記段付外径を内径底部と略同じ軸方向位置まだは
これよシ開放端寄りの位置、まで加工しておくことを特
徴とする特許請求の範み１第２項記載の筒状部品の外径
形状加工方法。[Claims] ■ In a method for processing the outer diameter of a cylindrical part having a groove or a tooth profile on the outer periphery, a bottom is provided at one end of the part, the outer periphery of the cylindrical part is received by a mold, and the part is opened. A cylindrical type characterized by forming a tooth shape on the outer diameter surface through plastic deformation while applying tensile force to the material at the front by pressing a press mold that fits into the inner diameter from the end B (1) to the bottom of the inner diameter. A method for processing the outer diameter of a part. 2. In a method for processing the outer diameter of a cylindrical part having a groove or a tooth profile on the outer diameter surface, a bottom is provided at one end of the part, and the inner diameter of the mold is attached to the outer diameter of the bottom side. The outer diameter of the step τJ, which is approximately equal to '' or smaller than this υ, is pre-processed, the front outer peripheral surface and the stepped outer diameter surface are received by a mold, and the mold is pressed from the open end side to the bottom of the inner diameter. Forming grooves or tooth shapes on the outer diameter surface by plastic deformation while applying tensile force to the front part'f:
A method for machining the outer diameter shape of a cylindrical part with a 4' feature. 3. The cylindrical shape according to claim 1, wherein the stepped outer diameter is machined to approximately the same axial position as the bottom of the inner diameter, but also to a position closer to the open end. A method for processing the outer diameter shape of parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13368482A JPS5924547A (en) | 1982-08-02 | 1982-08-02 | Method for working outer diameter shape of tubular member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13368482A JPS5924547A (en) | 1982-08-02 | 1982-08-02 | Method for working outer diameter shape of tubular member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5924547A true JPS5924547A (en) | 1984-02-08 |
Family
ID=15110452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13368482A Pending JPS5924547A (en) | 1982-08-02 | 1982-08-02 | Method for working outer diameter shape of tubular member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5924547A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6257041B1 (en) * | 1994-12-29 | 2001-07-10 | Spicer Driveshaft, Inc. | Method of forming a one-piece steering shaft member |
| JP2013225691A (en) * | 2007-03-23 | 2013-10-31 | Semiconductor Energy Lab Co Ltd | Semiconductor device and manufacturing method of semiconductor device |
| CN108436010A (en) * | 2018-01-23 | 2018-08-24 | 台州万特汽车零部件有限公司 | Helical tooth cold forging machine |
-
1982
- 1982-08-02 JP JP13368482A patent/JPS5924547A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6257041B1 (en) * | 1994-12-29 | 2001-07-10 | Spicer Driveshaft, Inc. | Method of forming a one-piece steering shaft member |
| JP2013225691A (en) * | 2007-03-23 | 2013-10-31 | Semiconductor Energy Lab Co Ltd | Semiconductor device and manufacturing method of semiconductor device |
| CN108436010A (en) * | 2018-01-23 | 2018-08-24 | 台州万特汽车零部件有限公司 | Helical tooth cold forging machine |
| CN108436010B (en) * | 2018-01-23 | 2019-12-10 | 台州万特汽车零部件有限公司 | Cold forging machine for spiral teeth |
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