JPH0757391B2 - Constant velocity universal joint outer ring ironing method - Google Patents
Constant velocity universal joint outer ring ironing methodInfo
- Publication number
- JPH0757391B2 JPH0757391B2 JP60236186A JP23618685A JPH0757391B2 JP H0757391 B2 JPH0757391 B2 JP H0757391B2 JP 60236186 A JP60236186 A JP 60236186A JP 23618685 A JP23618685 A JP 23618685A JP H0757391 B2 JPH0757391 B2 JP H0757391B2
- Authority
- JP
- Japan
- Prior art keywords
- outer ring
- ring material
- punch
- ironing
- cylindrical portion
- 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 - Fee Related
Links
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、ステム部の一端に設けられたカップ部の内
周に軸線方向に延びるストレートな数条のボール転動溝
を有する等速自在継手外輪のしごき加工方法に関するも
のである。Description: TECHNICAL FIELD The present invention relates to a constant velocity universal joint outer ring having several straight ball rolling grooves extending in the axial direction on the inner periphery of a cup portion provided at one end of a stem portion. The present invention relates to a method of ironing.
従来の技術 ダブルオフセット型等速自在継手の外輪は、例えば第４
図に示すように、ステム部（１）と、該ステム部（１）
の一端に設けられたカップ部（２）とで構成され、カッ
プ部（２）の内周には軸線方向に延びるストレートな数
条のボール転動溝（４）が形成されている。2. Description of the Related Art The outer ring of a double offset type constant velocity universal joint is, for example,
As shown in the figure, the stem portion (1) and the stem portion (1)
And a cup portion (2) provided at one end of the cup portion (2), and several straight ball rolling grooves (4) extending in the axial direction are formed on the inner periphery of the cup portion (2).
通常、上記外輪は、第５図に示す如き軸部（5a）と、該
軸部（5a）の一端に設けられ、内周が上記カップ部
（２）の内周形状と略同一の輪郭形状で、かつ、多少大
きい円筒部（5b）とで構成される外輪用素材（５）を製
作し、この外輪用素材（５）の円筒部（5b）にしごき加
工を施して製造される。Usually, the outer ring is provided on the shaft portion (5a) as shown in FIG. 5 and one end of the shaft portion (5a), and the inner circumference is substantially the same as the inner peripheral shape of the cup portion (2). Then, the outer ring material (5) composed of the slightly larger cylindrical part (5b) is manufactured, and the cylindrical part (5b) of the outer ring material (5) is ironed.
上記外輪用素材（５）の円筒部（5a）のしごき加工は、
第６図に示すように、外輪用素材（５）の円筒部（5b）
に挿入され、外周が製品の内周形状と逆の輪郭形状を有
するパンチ（６）と、外輪用素材（５）の円筒部（5b）
の外周にしごきを行なうためのテーパ状の内周形状を有
するダイス（７）とを具備し、外輪用素材（５）の円筒
部（5b）内にパンチ（６）を挿入してダイス（７）によ
り外輪用素材（５）の円筒部（5b）を外周側からしご
き、外輪用素材（５）の円筒部（5b）を中心に向かって
押し込むと同時にパンチ（６）とダイス（７）との間で
挾圧することにより、外輪用素材（５）の円筒部（5b）
の内周をパンチ（６）の外周により所望形状に形成す
る。Ironing of the cylindrical part (5a) of the outer ring material (5)
As shown in FIG. 6, the cylindrical portion (5b) of the outer ring material (5).
Punch (6) having a contour shape opposite to the inner circumference shape of the product and a cylindrical portion (5b) of the outer ring material (5).
A die (7) having a tapered inner peripheral shape for performing ironing on the outer periphery of the die (7) by inserting the punch (6) into the cylindrical portion (5b) of the outer ring material (5). ) Squeeze the cylindrical part (5b) of the outer ring material (5) from the outer peripheral side, and push the cylindrical part (5b) of the outer ring material (5) toward the center while simultaneously punching the punch (6) and the die (7). Cylinder part (5b) of outer ring material (5) by pressing between
The inner circumference of the punch is formed into a desired shape by the outer circumference of the punch (6).
発明が解決しようとする問題点 ところで、外輪用素材（５）の円筒部（5b）にパンチ
（６）を挿入してダイス（７）との協動によりしごき加
工を施す場合、外輪用素材（５）の円筒部（5b）にパン
チ（６）を挿入してダイス（７）によるしごき加工を開
始する前の状態では、外輪用素材（５）の円筒部（5b）
の内周がパンチ（６）の外周より多少大きくてその間に
径方向のスキマが存在するため、しごき加工初期に外輪
用素材（５）のダイス（７）より受ける押圧力によって
容易に傾き、そのままの状態でしごき加工が行なわれる
ことがある。特に、外輪用素材（５）が鍛造品の場合、
鍛造工具の磨耗等により外輪用素材（５）の円筒部（5
b）の内外周が不均一形状となり、この外輪用素材
（５）の円筒部（5b）の内外周の不均一な形状が外輪用
素材（５）の傾きを増長させる。従って、外輪用素材
（５）が傾いた状態のままでしごき加工が行われると、
しごき加工後、外輪用素材（５）の円筒部（5b）の基準
内径に対する軸部（5a）の振れ精度が悪化する等の精度
的不具合があり、そのため、軸振れを矯正する別加工を
付加するか、或いは軸部（5a）の切削、研削加工取り代
を大きく見込まざるを得ないと云う問題点があった。Problems to be Solved by the Invention By the way, when the punch (6) is inserted into the cylindrical portion (5b) of the outer race material (5) and ironing is performed in cooperation with the die (7), the outer race material ( In the state before inserting the punch (6) into the cylindrical portion (5b) of 5) and starting the ironing process by the die (7), the cylindrical portion (5b) of the outer ring material (5)
Since the inner circumference of the punch is slightly larger than the outer circumference of the punch (6) and there is a gap in the radial direction between the punch and the punch (6), it is easily inclined by the pressing force received from the die (7) of the outer ring material (5) at the initial stage of ironing and In some cases, ironing may be performed. Especially when the outer ring material (5) is a forged product,
The outer ring material (5) has a cylindrical part (5
The inner and outer peripheries of b) have a non-uniform shape, and the non-uniform shape of the inner and outer peripheries of the cylindrical portion (5b) of the outer ring material (5) increases the inclination of the outer ring material (5). Therefore, if ironing is performed with the outer ring material (5) still tilted,
After ironing, there is a precision problem such as deterioration of the runout accuracy of the shaft part (5a) with respect to the reference inner diameter of the cylindrical part (5b) of the outer ring material (5). Therefore, additional processing to correct shaft runout is added. However, there is a problem in that the machining allowance for cutting and grinding the shaft portion (5a) must be expected.
問題点を解決するための手段 この発明は上記問題点に鑑みて提案されたもので、軸部
の一端に円筒部を有する外輪用素材の、上記円筒部に挿
入され、外周が製品の内周形状と逆の輪郭形状を有する
パンチと、上記外輪用素材の円筒部の外周のしごきを行
なうためのテーパ状の内周形状を有するダイスとを具備
したしごき装置を用い、上記外輪用素材の円筒部に上記
パンチを挿入して上記ダイスにより上記外輪用素材の円
筒部を外周側からしごき、上記外輪用素材の円筒部を順
次中心に向かって押し込むと同時に上記パンチと上記ダ
イスとの間で挾圧することにより、上記外輪用素材の円
筒部の内周を上記パンチの外周により所望形状に形成す
る等速自在継手外輪のしごき加工方法において、上記パ
ンチと同一軸線上に底部に向かって、漸次小径となるテ
ーパ状で、かつ、その底部が上記外輪用素材の軸部の外
径と略同径の孔径を有するストレート孔形状に形成され
た位置決め孔を設けたステムガイドを、外輪用素材の円
筒部にダイスが接触する以前に、上記位置決め孔底部に
外輪用素材の軸部の先端部が嵌挿されるように配置し、
ダイスにより外輪用素材の円筒部のしごき加工が開始さ
れる前に、外輪用素材の軸部の先端部を上記ステムガイ
ドの位置決め孔底部に乾燥させて、外輪用素材の軸部を
パンチに対して位置決めするとともに、しごき加工動作
の間、ステムガイドにより外輪用素材の軸部のパンチに
対する位置決め状態を維持させることを特徴とする等速
自在継手外輪のしごき加工方法を提供する。Means for Solving Problems The present invention has been proposed in view of the above problems, and is an outer ring material having a cylindrical portion at one end of a shaft portion, which is inserted into the cylindrical portion and has an outer periphery which is an inner periphery of a product. Using an ironing device equipped with a punch having a contour shape opposite to that of the outer ring material and a die having a tapered inner peripheral shape for ironing the outer periphery of the cylindrical portion of the outer ring material, a cylinder of the outer ring material is used. Part of the outer ring material is squeezed from the outer peripheral side by the die and the cylindrical part of the outer ring material is sequentially pushed toward the center, and at the same time, the punch is inserted between the punch and the die. In a method for ironing a constant velocity universal joint outer ring, in which the inner periphery of the cylindrical portion of the outer race material is formed into a desired shape by the outer periphery of the punch by applying pressure, gradually decreasing toward the bottom on the same axis as the punch. A stem guide having a positioning hole formed in a straight hole shape having a tapered diameter and a bottom portion having a hole diameter substantially the same as the outer diameter of the shaft portion of the outer ring material, Before the die contacts the cylindrical portion, the positioning portion is arranged so that the tip portion of the shaft portion of the outer ring material is fitted into the bottom portion of the positioning hole,
Before the ironing of the cylindrical part of the outer ring material is started by the die, the tip of the shaft part of the outer ring material is dried to the bottom of the positioning hole of the stem guide, and the shaft part of the outer ring material is pressed against the punch. The present invention provides a method for ironing a constant velocity universal joint outer ring, characterized in that the stem guide maintains the positioning of the shaft portion of the outer ring material with respect to the punch during the ironing operation.
作用 ダイスにより外輪素材の円筒部のしごき加工が開始され
る前に、外輪用素材の軸部の先端部をステムガイドの位
置決め孔底部に嵌挿させて当該外輪用素材の軸部をパン
チに対して位置決めするとともに、しごき加工動作の
間、ステムガイドにより外輪用素材の軸部のパンチに対
する位置決め状態を維持させるから、しごき加工初期の
ダイスの押圧力による外輪用素材の傾きを確実に防止す
ることができるとともに、外輪用素材の円筒部を軸部に
対して同芯状にしごき加工することができる。Action Before the ironing of the cylindrical part of the outer ring material is started by the die, the tip of the shaft part of the outer ring material is inserted into the bottom of the positioning hole of the stem guide and the shaft part of the outer ring material is pressed against the punch. The stem guide maintains the positioning of the shaft of the outer ring material with respect to the punch during the ironing operation, so it is possible to reliably prevent the outer ring material from tilting due to the pressing force of the die during the initial ironing process. In addition, the cylindrical portion of the outer ring material can be concentric with the shaft portion and can be ironed.
実施例 以下、この発明に係る等速自在継手外輪のしごき加工方
法を第１図乃至第３図に基づいて説明する。EXAMPLE A method for ironing a constant velocity universal joint outer ring according to the present invention will be described below with reference to FIGS. 1 to 3.
第１図はこの発明方法を実施するためのしごき加工装置
の縦断面図である。FIG. 1 is a vertical sectional view of an ironing device for carrying out the method of the present invention.
第１図において、（８）はプレスボルスタ（９）上に固
設されたダイスホルダで、垂直方向に設けた嵌挿孔（8
a）内にガイドリング（10）と、外周を補強リング（1
1）により補強されたダイス（12）とを同芯状に順次嵌
挿させてダイス押え（13）を介して固定させている。
（14）は外周に製品の内周形状と逆の輪郭形状が形成さ
れたパンチで、ダイス（12）と同一軸線上に配置され、
油圧または機械的手段等により垂直方向に所定のストロ
ーク昇降運動し得るように設けたプレスラム（15）の下
面に固定されたパンチホルダ（16）にパンチ押え（17）
を介して固定されている。（18）は昇降用シリンダ（図
示せず）のピストンロッド（19）の先端に一体に形成さ
れてガイドリング（10）の中心部に設けた垂直方向の嵌
挿孔（10a）内に昇降可能に嵌挿されたステムガイド
で、外輪用素材（５）の軸部（5a）の下端部を嵌挿させ
る位置決め孔（20）と、この位置決め孔（20）が常にダ
イス（12）と同芯を保ちながら昇降運動するようにガイ
ドリング（10）の嵌挿孔（10a）の周面に摺接するガイ
ド部（21）とを有する。上記位置決め孔（20）は底部に
向かって漸次小径となるテーパ状に形成され、かつ、こ
の底部が外輪用素材（５）の軸部（5a）の外径と略同一
の孔径を有するストレート孔形状に形成されており、外
輪用素材（５）の軸部（5a）の下端部がテーパ部分によ
り案内されてその底部に嵌挿されるようになっている。
上記ステムガイド（18）はダイス（12）によるしごき加
工が開始される以前に、位置決め孔（20）の底部に外輪
用素材（５）の軸部（5a）の下端部が嵌挿される上死点
となるよう配置されている。（22）はガイドリング（1
0）の周方向適数箇所にステムガイド（18）およびピス
トンロッド（19）と直交する方向に摺動可能に配設され
たストッパーピンで、コイルバネ（23）により斜めに切
欠いた先端部（22a）をガイドリング（10）の嵌挿孔（1
0a）内に弾性的に突出させている。（24）はプレスボル
スタ（９）の下方に配設された排出シュートで、ステム
ガイド（18）およびピストンロッド（19）との干渉を避
けるよう適宜の駆動装置により開閉動作する構造になっ
ている。（25）は外輪用素材（５）をパンチ（14）の下
方にローディングするローダーで、外輪用素材（５）の
供給位置とパンチ（14）の下方との間を適宜の手段でパ
ンチ（14）の軸芯と直交する方向に往復作動する構造に
なっている。In FIG. 1, (8) is a die holder fixedly mounted on the press bolster (9), and has a fitting insertion hole (8
a) Inside the guide ring (10)
The die (12) reinforced by (1) is fitted in order in a concentric manner and fixed through a die retainer (13).
(14) is a punch whose outer periphery has a contour shape opposite to the inner peripheral shape of the product, and is arranged on the same axis as the die (12),
The punch holder (17) is fixed to the punch holder (16) fixed to the lower surface of the press ram (15) that is vertically movable by a predetermined stroke by hydraulic or mechanical means.
Is fixed through. (18) is integrally formed at the tip of the piston rod (19) of the lifting cylinder (not shown) and can be moved up and down in the vertical fitting hole (10a) provided in the center of the guide ring (10). A positioning hole (20) into which the lower end of the shaft portion (5a) of the outer ring material (5) is inserted by the stem guide inserted into the positioning guide (20) and the positioning hole (20) are always concentric with the die (12). And a guide portion (21) which is in sliding contact with the peripheral surface of the fitting insertion hole (10a) of the guide ring (10) so as to move up and down. The positioning hole (20) is formed in a tapered shape in which the diameter gradually decreases toward the bottom, and the bottom has a hole diameter substantially the same as the outer diameter of the shaft portion (5a) of the outer ring material (5). It is formed in a shape, and the lower end of the shaft portion (5a) of the outer race material (5) is guided by the tapered portion and fitted into the bottom portion thereof.
The stem guide (18) has a top end where the lower end of the shaft portion (5a) of the outer race material (5) is fitted into the bottom portion of the positioning hole (20) before the ironing process by the die (12) is started. It is arranged so that it becomes a dot. (22) is a guide ring (1
(0) is a stopper pin that is slidable in a proper number in the circumferential direction of the stem guide (18) and in the direction orthogonal to the piston rod (19). ) To the fitting hole (1) of the guide ring (10)
0a) is elastically projected. Reference numeral (24) is a discharge chute arranged below the press bolster (9), and has a structure which is opened and closed by an appropriate drive device so as to avoid interference with the stem guide (18) and the piston rod (19). . Reference numeral (25) is a loader for loading the outer race material (5) below the punch (14), and punches (14) between the supply position of the outer race material (5) and the lower side of the punch (14) by an appropriate means. ) Has a structure that reciprocates in the direction orthogonal to the axis.
以上がこの発明方法を実施するためのしごき加工装置の
構成で、以下上記構成におけるこの発明方法について順
次説明すると次のとおりである。The above is the configuration of the ironing apparatus for carrying out the method of the present invention, and the present invention method in the above configuration will be sequentially described below.
第１図に示す状態はパンチ（14）およびステムガイド
（18）が上死点にあり、パンチ（14）の下方にローダー
（25）により外輪用素材（５）がローディングされた加
工直前であり、この状態で、プレスラム（15）を作動さ
せてパンチホルダ（16）を降下させ、このパンチホルダ
（16）に固定させたパンチ（14）を一体に降下させる
と、パンチ（14）が外輪用素材（５）の円筒部（5b）内
に挿入されて外輪用素材（５）に直接降下力を伝達し、
外輪用素材（５）がパンチ（14）と一体降下する。そし
て、第２図に示す状態までパンチ（14）と外輪用素材
（５）が降下すると、外輪用素材（５）の軸部（5a）の
下端部がステムガイド（18）の位置決め孔（20）のテー
パ部分に案内されてその底部に嵌挿され、これにより外
輪用素材（５）の軸部（5a）がパンチ（14）に対して位
置決めされる。そして更に、第３図に示す状態までパン
チ（14）と外輪用素材（５）を降下させると、この降下
過程で外輪用素材（５）の円筒部（5b）の外周がダイス
（12）によりしごかれ、外輪用素材（５）の円筒部（5
b）が中心に向かって順次押し込まれると同時にダイス
（12）とパンチ（14）との間で挾圧され、これにより、
外輪用素材（５）の円筒部（5b）の内周がパンチ（14）
の輪郭形状に沿うように拘束支持されて所期する形状に
形成される。このとき、ステムガイド（18）は上記成形
作用を受ける間、パンチ（14）と同期して降下し、外輪
用素材（５）の軸部（5a）のパンチ（14）に対する位置
決めを維持し続けている。このようにしてしごき加工を
終えると、先ずステムガイド（18）を更に下死点まで降
下し、その後、排出シュート（24）を開いてしごき完了
品の排出通路を確保する。次に、プレスラム（15）を作
動してパンチ（14）を下死点から上死点に向かって上昇
させる。すると、しごき完了品はパンチ（14）との摩擦
力によりパンチ（14）と一緒に上昇し、その上昇過程で
ストッパーピン（22）によりパンチ（14）から引き抜か
れて自重で排出シュート（24）に落下し、この排出シュ
ート（24）上を転動して機外に排出される。しごき完了
品が機外に排出されると、排出シュート（14）を閉じて
ステムガイド（18）を上死点まで上昇させる。以後は上
記と同様な動作を繰り返し行なわせる。The state shown in FIG. 1 is immediately before the processing in which the punch (14) and the stem guide (18) are at the top dead center and the outer ring material (5) is loaded below the punch (14) by the loader (25). , In this state, the press ram (15) is operated to lower the punch holder (16), and when the punch (14) fixed to the punch holder (16) is integrally lowered, the punch (14) is used for the outer ring. It is inserted into the cylindrical part (5b) of the material (5) to transmit the descending force directly to the outer ring material (5),
The outer ring material (5) descends together with the punch (14). When the punch (14) and the outer ring material (5) are lowered to the state shown in FIG. 2, the lower end of the shaft portion (5a) of the outer ring material (5) is positioned in the positioning hole (20) of the stem guide (18). ) Is inserted into the bottom part of the outer ring material (5) by being guided by the tapered part of (4), and thereby the shaft part (5a) of the outer ring material (5) is positioned with respect to the punch (14). Further, when the punch (14) and the outer ring material (5) are lowered to the state shown in FIG. 3, the outer periphery of the cylindrical portion (5b) of the outer ring material (5) is formed by the die (12) in this lowering process. Strained, the outer ring material (5) cylindrical part (5
At the same time as b) is pushed toward the center, it is pressed between the die (12) and the punch (14).
The inner circumference of the cylindrical part (5b) of the outer ring material (5) is punched (14)
Is constrained and supported so as to follow the contour shape of, and is formed into a desired shape. At this time, the stem guide (18) descends in synchronization with the punch (14) while being subjected to the above-described forming action, and continues to maintain the positioning of the shaft portion (5a) of the outer race material (5) with respect to the punch (14). ing. When the ironing process is completed in this way, the stem guide (18) is further lowered to the bottom dead center, and then the discharge chute (24) is opened to secure the discharge passage for the completed ironing product. Next, the press ram (15) is operated to raise the punch (14) from the bottom dead center to the top dead center. Then, the ironing completed product ascends together with the punch (14) due to the frictional force with the punch (14), and is pulled out from the punch (14) by the stopper pin (22) during the ascending process and discharged by its own weight to the chute (24). Then, it rolls on the discharge chute (24) and is discharged to the outside of the machine. When the ironing completed product is discharged to the outside of the machine, the discharge chute (14) is closed and the stem guide (18) is raised to the top dead center. After that, the same operation as described above is repeated.
上記この発明方法によれば、ダイス（12）により外輪用
素材（５）の円筒部（5b）のしごき加工が開始される以
前に、外輪用素材（５）の軸部（5a）の下端部をステム
ガイド（18）の位置決め孔（20）に嵌挿させて、外輪用
素材（５）の軸部（5a）をパンチ（14）に対して位置決
めするとともに、しごき加工動作の間、上記外輪用素材
（５）をパンチ（14）とステムガイド（18）の位置決め
孔（20）とにより保持させることができる。そして、上
記ステムガイド（18）の位置決め孔（20）を底部に向か
って漸次小径となるテーパ状で、かつ、その底部が外輪
用素材（５）の軸部（5a）の外径と略同一の孔径を有す
るストレート孔形状に形成させているため、外輪用素材
（５）の軸部（5a）の下端部をテーパ部分により案内さ
せてその底部に径方向にスキマなく嵌挿させることがで
き、これにより外輪用素材（５）の軸部（5a）をパンチ
（14）に対して同一軸線上に正確に位置決めさせること
ができるとともに、しごき加工動作の間、外輪用素材
（５）の軸部（5a）をパンチ（14）に対する位置決め状
態を正確に維持することができる。これによってしごき
加工初期のダイス（12）の押圧力により外輪用素材
（５）の傾きを防止することができるとともに、外輪用
素材（５）の円筒部（5b）を軸部（5a）に対して同芯状
にしごき加工することができる。このため、しごき加工
に供する外輪用素材（５）に精度的な不具合があって
も、つまり軸振れしていても、しごき加工後、円筒部
（5b）に対する軸部（5a）の振れを吸収することができ
る。According to the above method of the present invention, the lower end of the shaft portion (5a) of the outer race material (5) is started before the ironing of the cylindrical portion (5b) of the outer race material (5) is started by the die (12). Is fitted into the positioning hole (20) of the stem guide (18) to position the shaft portion (5a) of the outer ring material (5) with respect to the punch (14), and during the ironing operation, the outer ring is The working material (5) can be held by the punch (14) and the positioning hole (20) of the stem guide (18). Further, the positioning hole (20) of the stem guide (18) is tapered so that the diameter gradually decreases toward the bottom, and the bottom is substantially the same as the outer diameter of the shaft portion (5a) of the outer ring material (5). Since it is formed in the shape of a straight hole having a hole diameter of, it is possible to guide the lower end of the shaft portion (5a) of the outer ring material (5) by the tapered portion and insert it into the bottom portion without radial clearance. As a result, the shaft portion (5a) of the outer ring material (5) can be accurately positioned on the same axis with respect to the punch (14), and the shaft of the outer ring material (5) can be formed during the ironing operation. The position of the part (5a) with respect to the punch (14) can be accurately maintained. As a result, it is possible to prevent the outer ring material (5) from tilting due to the pressing force of the die (12) in the initial stage of ironing, and the cylindrical portion (5b) of the outer ring material (5) with respect to the shaft portion (5a). Can be concentric and ironed. Therefore, even if there is a precision defect in the outer ring material (5) used for ironing, that is, even if the shaft has runout, after the ironing process, the runout of the shaft part (5a) with respect to the cylindrical part (5b) is absorbed. can do.
尚、以上はダブルオフセット型等速自在継手の外輪につ
いて説明したが、この発明はこれに限定されるものでは
なく、ステム部の一端に設けられたカップ部の内周に軸
線方向に延びるストレートな数条のボール転動溝を有す
る等速自在継手の外輪に適用が可能である。Although the outer ring of the double offset type constant velocity universal joint has been described above, the present invention is not limited to this, and the straight ring extending in the axial direction is provided on the inner circumference of the cup portion provided at one end of the stem portion. It can be applied to the outer ring of a constant velocity universal joint having several ball rolling grooves.
発明の効果 以上説明したように、この発明方法によれば、ダイスに
より外輪用素材の円筒部のしごき加工が開始される前
に、外輪用素材の軸部の先端部をステムガイドの底部に
向かって漸次小径となるテーパ状で、かつ、その底部が
外輪用素材の軸部の外径の略同一の孔径を有するストレ
ート孔形状に形成された位置決め孔に嵌挿させて当該外
輪用素材の軸部をパンチに対して位置決めするから、外
輪用素材の軸部をパンチに対して同一軸線上に正確に位
置決めさせることができるとともに、しごき加工動作の
間、ステムガイドにより上記外輪用素材の軸部のパンチ
に対する位置決め状態を正確に維持することができ、こ
れにより、しごき加工初期のダイスの押圧力による外輪
用素材の傾きを確実に防止することができるとともに、
外輪用素材の円筒部を軸部に対して同芯状にしごき加工
することができる。このため、外輪用素材の精度の影響
を受けずに加工後に円筒部の基準内径に対して軸部の振
れの少ない製品を得ることが可能となり、軸部の切削、
研削加工取り代を少なくするか或いは不要にするととも
に、軸振れを矯正する別加工の付加を不要にすることが
できる。その上、素材の精度によらず、軸振れの少ない
製品を得ることができるため、素材を製作する鍛造工具
の寿命を著しく延ばす効果もある。As described above, according to the method of the present invention, the tip of the shaft portion of the outer race material is directed toward the bottom of the stem guide before the ironing of the cylindrical portion of the outer race material is started by the die. The shaft of the outer ring material is fitted into a positioning hole formed in a straight hole shape having a taper shape that gradually decreases in diameter and the bottom portion has a hole diameter substantially the same as the outer diameter of the shaft portion of the outer ring material. Since the part is positioned with respect to the punch, the shaft part of the outer ring material can be accurately positioned on the same axis line with respect to the punch, and the stem part of the outer ring material can be positioned by the stem guide during the ironing operation. It is possible to accurately maintain the positioning state with respect to the punch, and by this, it is possible to reliably prevent the outer ring material from tilting due to the pressing force of the die at the initial stage of ironing.
It is possible to perform ironing by making the cylindrical portion of the outer race material coaxial with the shaft portion. For this reason, it becomes possible to obtain a product with less deflection of the shaft portion with respect to the reference inner diameter of the cylindrical portion after processing without being affected by the accuracy of the material for the outer ring.
It is possible to reduce or eliminate the machining allowance, and it is possible to eliminate the need for additional processing for correcting shaft runout. In addition, a product with less shaft runout can be obtained irrespective of the accuracy of the material, which has the effect of significantly extending the life of the forging tool for manufacturing the material.
第１図はの発明に係る等速自在継手外輪のしごき加工方
法を実施するためのしごき加工装置の縦断面図、第２図
および第３図はその動作状態を示す縦断面図、第４図は
ダブルオフセット型等速自在継手の外輪を示す図面、第
５図はその製造に用いられる外輪用素材の図面、第６図
は従来の等速自在継手外輪のしごき加工方法を示す概略
図である。 （５）……外輪用素材、（5a）……軸部、（5b）……円
筒部、（12）……ダイス、（14）……パンチ、（18）…
…ステムガイド、（20）……位置決め孔。1 is a longitudinal sectional view of an ironing device for carrying out the ironing method for an outer ring of a constant velocity universal joint according to the invention of FIGS. 2 and 3 is a longitudinal sectional view showing its operating state, FIG. Is a drawing showing an outer ring of a double offset type constant velocity universal joint, FIG. 5 is a drawing of a material for an outer ring used in its manufacture, and FIG. 6 is a schematic diagram showing a conventional ironing method for a constant velocity universal joint outer ring. . (5) …… Material for outer ring, (5a) …… Shaft, (5b) …… Cylinder, (12) …… Die, (14) …… Punch, (18)…
… Stem guide, (20) …… Positioning hole.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−3618（ＪＰ，Ａ) 実開 昭60−181232（ＪＰ，Ｕ) 特公 昭58−52733（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 61-3618 (JP, A) Actual development S60-181232 (JP, U) JP 58-52733 (JP, B2)
Claims (1)
の、上記円筒部に挿入され、外周が製品の内周形状と逆
の輪郭形状を有するパンチと、上記外輪用素材の円筒部
の外周のしごきを行なうためのテーパ状の内周形状を有
するダイスとを具備したしごき装置を用い、上記外輪用
素材の円筒部に上記パンチを挿入して上記ダイスにより
上記外輪用素材の円筒部を外周側からしごき、上記外輪
用素材の円筒部を順次中心に向かって押し込むと同時に
上記パンチと上記ダイスとの間で挾圧することにより、
上記外輪用素材の円筒部の内周を上記パンチの外周によ
り所望形状に形成する等速自在継手外輪のしごき加工方
法において、上記パンチと同一軸線上に底部に向かっ
て、漸次小径となるテーパ状で、かつ、その底部が上記
外輪用素材の軸部の外径と略同径の孔径を有するストレ
ート孔形状に形成された位置決め孔を設けたステムガイ
ドを、外輪用素材の円筒部にダイスが接触する以前に、
上記位置決め孔底部に外輪用素材の軸部の先端部が嵌挿
されるように配置し、ダイスにより外輪用素材の円筒部
のしごき加工が開始される前に、外輪用素材の軸部の先
端部を上記ステムガイドの位置決め孔底部に嵌挿させ
て、外輪用素材の軸部をパンチに対して位置決めすると
ともに、しごき加工動作の間、ステムガイドにより外輪
用素材の軸部のパンチに対する位置決め状態を維持する
ことを特徴とする等速自在継手外輪のしごき加工方法。1. A punch of an outer ring material having a cylindrical portion at one end of a shaft portion, which is inserted into the cylindrical portion and has an outer periphery having a contour shape opposite to an inner peripheral shape of a product, and a cylindrical portion of the outer ring material. Using a die having a tapered inner peripheral shape for ironing the outer periphery of the outer ring material, and inserting the punch into the cylindrical portion of the outer ring material to form the outer ring material cylindrical portion by the die. By squeezing from the outer peripheral side, the cylindrical portion of the material for the outer ring is sequentially pushed toward the center, and at the same time, by sandwiching between the punch and the die,
In a method for ironing a constant velocity universal joint outer ring, wherein the inner circumference of the cylindrical portion of the outer race material is formed into the desired shape by the outer circumference of the punch, a taper shape in which the diameter gradually decreases toward the bottom on the same axis as the punch. And, the bottom part of the stem guide provided with a positioning hole formed in a straight hole shape having a hole diameter of substantially the same diameter as the outer diameter of the shaft portion of the outer ring material, the die to the cylindrical portion of the outer ring material Before making contact
It is arranged so that the tip of the shaft portion of the outer ring material is inserted into the bottom of the positioning hole, and before the ironing of the cylindrical portion of the outer ring material is started by the die, the tip portion of the shaft portion of the outer ring material is started. Is inserted into the bottom of the positioning hole of the stem guide to position the shaft part of the outer ring material with respect to the punch, and during the ironing operation, the stem guide positions the shaft part of the outer ring material with respect to the punch. A constant velocity universal joint outer ring ironing method characterized by maintaining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60236186A JPH0757391B2 (en) | 1985-10-22 | 1985-10-22 | Constant velocity universal joint outer ring ironing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60236186A JPH0757391B2 (en) | 1985-10-22 | 1985-10-22 | Constant velocity universal joint outer ring ironing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6297720A JPS6297720A (en) | 1987-05-07 |
| JPH0757391B2 true JPH0757391B2 (en) | 1995-06-21 |
Family
ID=16997047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60236186A Expired - Fee Related JPH0757391B2 (en) | 1985-10-22 | 1985-10-22 | Constant velocity universal joint outer ring ironing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0757391B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109986009A (en) * | 2018-11-30 | 2019-07-09 | 四川奥信紧固件制造有限公司 | A kind of automobile engine tappet body guarantee concentricity processing mold |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5852733A (en) * | 1981-09-25 | 1983-03-29 | Canon Inc | Pattern output system |
-
1985
- 1985-10-22 JP JP60236186A patent/JPH0757391B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6297720A (en) | 1987-05-07 |
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