JPH0459057B2 - - Google Patents
Info
- Publication number
- JPH0459057B2 JPH0459057B2 JP11463683A JP11463683A JPH0459057B2 JP H0459057 B2 JPH0459057 B2 JP H0459057B2 JP 11463683 A JP11463683 A JP 11463683A JP 11463683 A JP11463683 A JP 11463683A JP H0459057 B2 JPH0459057 B2 JP H0459057B2
- Authority
- JP
- Japan
- Prior art keywords
- press
- axial direction
- inner ring
- burr
- formed product
- 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
- 238000000034 method Methods 0.000 claims description 10
- 238000004080 punching Methods 0.000 description 11
- 238000000465 moulding Methods 0.000 description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 101100328887 Caenorhabditis elegans col-34 gene Proteins 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000003014 reinforcing effect 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
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
- B21J13/025—Dies with parts moving along auxiliary lateral directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
この発明は、等速自在継手の内輪のプレス成形
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a press forming method for an inner ring of a constant velocity universal joint.
まず、等速自在継手の代表例として、周知のバ
ーフイールド型等速自在継手を第１図にしたがつ
て簡単に述べると、従動軸１０のスプライン部１
１に内輪２０を取付け、内輪２０と駆動軸１２の
外輪１３との間には、ゲージ１４にて保持された
通常６個のボール１５が各輪１３，２０の各ボー
ル溝１３ａ，２０ａを介して配設されており、駆
動軸１２と従動軸１０は折れ角に関係なく等速性
を保つようになつている。しかして、前記の内輪
２０は、従来、第２図に示すように、上型１６と
下型１７とを型合わせした状態で、下のポンチ１
９上の素材（インゴツト）２４に上のポンチ１８
を下動せしめて、素材２４を上下方向にプレスし
て成形して、第３図および第４図に示すように、
内部中央にバリ部２２をもつ断面Ｈ字状をなしか
つ外周にボール溝２３〜２３を形出したプレス成
形品２６を形成せしめ、このプレス成形品２６に
対し、バリ部２２を第５図に示すように打抜きポ
ンチ２９にて打抜く打抜き加工、および、従動軸
１０のスプライン部１１に嵌合するスプラインを
形成する研削加工などの各種の後加工を施して製
造されていた。しかし、前記のプレス成形品２６
のバリ部２２を打抜きポンチ２９で打抜き加工す
るときには、バリ部２２がダイ２８と離間してお
り、ダイ２８でバリ部２２が支持されないので
（第４図参照）、打抜きポンチ２９の打抜き荷重に
よりプレス成形品２６が変形し、ボール溝２３の
精度が損なわれる虞れがあつた。また、素材２４
の成形時に上下のポンチ１８，１９相互の軸心が
合致していないと、第６図に示すように、プレス
成形品２６の上下の凹部２５，２５の各軸心L1，
L2が偏心してしまい、バリ部２２の打抜き加工
が困難となることがあり、これによつても、上記
のプレス成形品２６の変形が生じ易く、不良品が
でき易いという問題があつた。 First, as a representative example of a constant velocity universal joint, a well-known bar field type constant velocity universal joint will be briefly described with reference to FIG.
1, an inner ring 20 is attached to the outer ring 13 of the drive shaft 12, and between the inner ring 20 and the outer ring 13 of the drive shaft 12, normally six balls 15 held by a gauge 14 are inserted through each ball groove 13a, 20a of each ring 13, 20. The driving shaft 12 and the driven shaft 10 are arranged to maintain constant velocity regardless of the bending angle. Conventionally, as shown in FIG.
Punch 18 on top material (ingot) 24 on 9
is moved downward, and the material 24 is pressed and formed in the vertical direction, as shown in FIGS. 3 and 4.
A press-formed product 26 having an H-shaped cross section with a burr 22 at the center of the interior and ball grooves 23 to 23 formed on the outer periphery is formed, and the burr 22 is shown in FIG. As shown, it was manufactured by performing various post-processing processes such as punching with a punch 29 and grinding to form a spline that fits into the spline portion 11 of the driven shaft 10. However, the press-formed product 26
When punching out the burr part 22 with the punch 29, the burr part 22 is separated from the die 28 and the burr part 22 is not supported by the die 28 (see Fig. 4). There was a risk that the press-formed product 26 would be deformed and the accuracy of the ball groove 23 would be impaired. Also, material 24
If the axes of the upper and lower punches 18 and 19 do not match each other during molding, as shown in FIG .
L 2 may become eccentric, making it difficult to punch out the burr portion 22. This also causes the problem that the press-formed product 26 is easily deformed and defective products are easily produced.
上記した欠点を解消するには、プレス成形品の
バリ部２２を第７図に示すように軸方向の一方端
部に片寄せて形成することができれば良い。すな
わち、この改良されたプレス成形品２１によれ
ば、第８図に示すようにバリ部２２の打抜き加工
時にダイ２８上にバリ部２２を支持させた状態で
打抜きポンチ２９により打抜くことができるとと
もに、凹部２５相互の偏心もないので、バリ部２
２の打抜き加工時の打抜き荷重による変形を生じ
難いものが得られる。 In order to eliminate the above-mentioned drawbacks, it is sufficient to form the burr portion 22 of the press-formed product so as to be biased toward one end in the axial direction, as shown in FIG. That is, according to this improved press-formed product 21, as shown in FIG. 8, when punching the burr portion 22, the burr portion 22 can be punched with the punch 29 while supporting the burr portion 22 on the die 28. At the same time, since there is no eccentricity between the recesses 25, the burr portion 2
A product that is less likely to be deformed due to the punching load during the punching process in step 2 can be obtained.
ところが、上記した上下のポンチ１８，１９に
よる軸方向のすえ込み荷重のみで素材２４を成形
する方法で、第７図のプレス成形品２１を成形す
るには、ポンチ１８，１９の一方を平型にしなけ
ればななないことから、前記のすえ込み荷重をか
なり大きく設定する必要を余儀無くされることが
予測され、プレス能力および寿命などの点から無
理があつた。また、この種の従来のプレス成形装
置には、例えば、特開昭57−56132号公報に開示
されたものがある。この成形装置は素材の上下面
を成形する上下のポンチと、素材の外側面を成形
する複数の分割型（割りダイス）とを備えている
が、この分割型は素材のプレス直前に所定位置に
位置決めされるため、この装置にあつても、前述
の成形法と同様に、上下のポンチによる軸方向の
すえ込み荷重のみで素材を成形するものであり、
前述した問題が存在した。 However, in order to form the press-formed product 21 shown in FIG. 7 using the method of forming the material 24 using only the axial swaging load by the upper and lower punches 18, 19, one of the punches 18, 19 must be flat-shaped. Therefore, it was predicted that the swaging load would have to be set quite large, which was unreasonable in terms of press capacity and life. Further, as a conventional press molding apparatus of this type, there is one disclosed in, for example, Japanese Unexamined Patent Publication No. 57-56132. This forming device is equipped with upper and lower punches that form the upper and lower surfaces of the material, and multiple split dies (split dies) that form the outer surface of the material. Because of the positioning, this device forms the material using only the axial swaging load from the upper and lower punches, similar to the above-mentioned forming method.
The problem mentioned above existed.
そこで、この発明が目的とすることは、上記し
た従来の欠点に鑑みて、等速自在継手の内輪をプ
レス成形するにあたつて、バリ部が軸方向の一方
端部に形出されたプレス成形品を、低いすえ込み
荷重で成形することができ、プレス能力および寿
命に係る不具合を解消し得るプレス成形法を提供
することである。 SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of the conventional art, an object of the present invention is to provide a method for press-forming the inner ring of a constant velocity universal joint, in which a burr is formed at one end in the axial direction. It is an object of the present invention to provide a press molding method that can mold a molded product with a low swaging load and can eliminate problems related to press capacity and life.
上記した目的を達成するためのこの発明は、素
材をポンチおよび平型にてその軸方向にプレスす
るとともに、それと並行して素材を複数の分割型
にてその軸心方向にプレスすることにより、等速
自在継手の内輪のプレス成形品をその内部のバリ
部が軸方向の一方端部に形出されるように成形せ
しめることを要旨とするプレス成形法である。 In order to achieve the above object, this invention presses a material in its axial direction with a punch and a flat die, and in parallel presses the material in its axial direction with a plurality of split dies. This is a press forming method in which the inner ring of a constant velocity universal joint is press formed so that the internal burr is formed at one end in the axial direction.
以下、この発明を実施したプレス装置の一例を
第９図〜第１２図にしたがつて説明する。成形前
のプレス装置を断面で示した第９図、同装置の分
割型の平面をその周辺部材とともに示した第１０
図において、台座３０上にはリング状をしたガイ
ドリング３１が固定されている。ガイドリング３
１の外周には補強リング３２が圧入嵌合されてい
る。このガイドリング３１の上部には内下がり状
の斜面３３が六方に形成されている。ガイドリン
グ３１の内側にはリング状をしたホルダー３４が
キー３５を介して上下方向へ移動可能に設けられ
ている。ホルダ３４は台座３０下方から上方へ向
けて突出されたクツシヨンピン３６により上動位
置に弾性支持されている。ホルダ３４の内方に位
置される下のポンチ３７は台座３０上に固定リン
グ３８を介して固定されている。下のポンチ３７
の軸心部に設けられた通し孔３９には、台座３０
下方から上方へ向けて突出されたノツクピン４０
が嵌挿されている。また、ホルダ３４上には、ガ
イドリング３１の斜面３３〜３３に対応して６個
分割型４１〜４１が配設されている。分割型４１
の外側部にはガイドリング３１の斜面３３〜３３
に摺接する斜面４２が形成されるとともにガイド
リング３１の斜面３３〜３３上には分割型４１〜
４１の相互間に位置しその型４１の側面をガイド
するガイド片４３〜４３が固定されており、分割
型４１〜４１がその上下移動時にその半径方向に
開閉可能にガイドされるようになつている。分割
型４１はホルダ３４との間に介装されたスプリン
グ４４により常には外方へ付勢されている。 An example of a press apparatus embodying the present invention will be described below with reference to FIGS. 9 to 12. FIG. 9 shows a cross section of the press device before molding, and FIG.
In the figure, a ring-shaped guide ring 31 is fixed on a pedestal 30. Guide ring 3
A reinforcing ring 32 is press-fitted onto the outer periphery of 1. Inwardly downward slopes 33 are formed in the upper part of the guide ring 31 in hexagonal directions. A ring-shaped holder 34 is provided inside the guide ring 31 so as to be movable in the vertical direction via a key 35. The holder 34 is elastically supported in the upward movement position by a cushion pin 36 that projects upward from below the base 30. A lower punch 37 located inside the holder 34 is fixed onto the base 30 via a fixing ring 38. Lower punch 37
The through hole 39 provided in the axial center of the pedestal 30
Knock pin 40 protruding from the bottom to the top
is inserted. Further, on the holder 34, six divided molds 41-41 are arranged corresponding to the slopes 33-33 of the guide ring 31. Split type 41
On the outer side of the guide ring 31 are slopes 33 to 33.
A slope 42 that slides into contact with the guide ring 31 is formed, and split molds 41 to 33 are formed on the slopes 33 to 33 of the guide ring 31.
Guide pieces 43 to 43 located between the molds 41 and guiding the side surfaces of the molds 41 are fixed, and the divided molds 41 to 41 are guided so as to be openable and closable in the radial direction when the divided molds 41 to 41 move up and down. There is. The split mold 41 is always urged outward by a spring 44 interposed between it and the holder 34.
また、上方に位置するラム４５の下面には上型
４６が分割型４１〜４１の上方に位置して固着さ
れている。しかして、下のポンチ３７の上部は、
等速自在継手の内輪のプレス成形品２１の反転状
態の下部形状（第７図において上部形状）に対応
する形状に形成され、また分割型４１〜４１の内
側部はプレス成形品２１の外側面形状に対応する
形状に形成されていて、下のポンチ３７、分割型
４１〜４１および上型４６の集合によりプレス成
形品２１の外形を形出するように設定されてい
る。 Moreover, an upper mold 46 is located above the divided molds 41 to 41 and is fixed to the lower surface of the ram 45 located above. However, the upper part of the lower punch 37 is
The inner ring of the constant velocity universal joint is formed in a shape corresponding to the lower shape of the inverted state (the upper shape in FIG. 7) of the press-formed product 21, and the inner parts of the split dies 41 to 41 are formed on the outer surface of the press-formed product 21. The outer shape of the press-formed product 21 is formed by a set of the lower punch 37, the split dies 41 to 41, and the upper die 46.
次に、上記したプレス装置において、素材２４
をプレス成形するときには、下のポンチ４７上に
素材（ビレツト）２４をセツトした後、ラム４５
を下動させる。すると、素材２４が下のポンチ３
７と上型４６にてその軸方向にプレスされる。さ
らに、ラム４５の下動により上型４６が分割型４
１〜４１をホルダ３４と共に押下げていくにした
がつて、同分割型４１〜４１がスプリング４４の
弾性に抗してガイドリング３１の斜面３３〜３３
を摺動してホルダ３４と上型４６の間を軸心方向
に移動する。これにより、素材２４は下のポンチ
３７と上型４６にてその軸方向にプレスされると
ともに、分割型４１〜４１によりその軸心方向に
プレスされ、素材２４がその軸方向と軸心方向と
の双方の同時プレスを受けることになる。ラム４
５の下動を完了すると、素材２４は、第７図およ
び第８図に示すように、下のポンチ３７、６個の
分割型４１〜４１および上型４６により内輪のプ
レス成形品２１に成形されることになる。 Next, in the above-described press device, the material 24 is
When press forming, after setting the material (billet) 24 on the lower punch 47, the ram 45
Move down. Then, the material 24 is placed in the lower punch 3.
7 and an upper die 46 in the axial direction. Furthermore, due to the downward movement of the ram 45, the upper mold 46 is moved into the divided mold 4.
As the molds 1 to 41 are pushed down together with the holder 34, the divided molds 41 to 41 resist the elasticity of the spring 44 and press down on the slopes 33 to 33 of the guide ring 31.
to move between the holder 34 and the upper mold 46 in the axial direction. As a result, the material 24 is pressed in its axial direction by the lower punch 37 and the upper die 46, and also in its axial direction by the split dies 41 to 41, and the material 24 is pressed in its axial direction and in its axial direction. will receive simultaneous press from both sides. Ram 4
5, the material 24 is formed into the inner press-formed product 21 by the lower punch 37, six split molds 41 to 41, and the upper mold 46, as shown in FIGS. 7 and 8. will be done.
その後、ラム４５を上動させると、クツシヨン
ピン３６によりホルダ３４を介して分割型４１〜
４１が上動されていくとともに、同分割型４１〜
４１はスプリング４４の弾性によりガイドリング
３１の斜面３３〜３３を摺動しながら、ホルダ３
４上を外方へ開動し、原状（第５図および第６図
参照）に戻る。次いで、プレス成形品２１を上方
へ取出せば良い。なお、プレス成形品２１が取出
し難いときには、ノツクピン４０を上動させて、
プレス成形品２１を上方へ押上げると容易に取出
すことができる。 After that, when the ram 45 is moved upward, the split molds 41 to 41 are moved through the holder 34 by the cushion pin 36.
41 was moved up, and the same split type 41~
41 slides on the slopes 33 to 33 of the guide ring 31 due to the elasticity of the spring 44, while the holder 3
4. Open the upper part outward and return to the original state (see Figures 5 and 6). Next, the press-molded product 21 may be taken out upward. Note that if it is difficult to remove the press-formed product 21, move the dowel pin 40 upwards.
The press-formed product 21 can be easily taken out by pushing upward.
すなわち、この発明によれば、素材を下のポン
チと上型にてその軸方向にプレスすると同時に、
同素材を複数の分割型にてその軸心方向にプレス
して、等速自在継手の内輪のプレス成形品を得る
ものであるから、素材に対するすえ込み荷重が下
のポンチおよび上型だけでなく、分割型によつて
も加えられることになり、素材の成形に必要なす
な込み荷重が下のポンチと下型と複数の分割型の
各成形型に分散され、従来の上下のポンチのみに
よる成形法のすえ込み荷重に比し、各成形型のす
え込み荷重を低く設定することができ、これによ
つて、プレス能力および寿命に係る従来の不具合
を解消することができる。したがつて、このプレ
ス成形法により成形されるプレス成形品は、バリ
部が軸方向の一方端部に形出されるため、バリ部
の打抜き加工時にダイ上にバリ部を支持させた状
態で打抜きポンチにより打抜くことができるとと
もに、凹部相互の偏心もないので、バリ部の打抜
き加工時の打抜き荷重による変形を生じ難いもの
が得られる。 That is, according to this invention, the material is pressed in the axial direction with the lower punch and the upper mold, and at the same time,
Since the same material is pressed in the axial direction with multiple split dies to obtain the press-formed inner ring of the constant velocity universal joint, the swaging load on the material is not limited to the lower punch and upper die. , the slumping load required to form the material is distributed to the lower punch, the lower mold, and the multiple molds of the split molds, compared to the conventional forming using only the upper and lower punches. The swaging load of each mold can be set lower than the swaging load of the conventional method, thereby solving the conventional problems related to press capacity and life. Therefore, in press-formed products formed by this press-forming method, the burr is formed at one end in the axial direction, so when punching the burr, the burr is supported on the die. Since it can be punched out with a punch and there is no eccentricity between the recesses, it is possible to obtain a product that is unlikely to be deformed by the punching load during punching of the burr portion.
第１図はバーフイールド型等速自在継手の断面
図、第２図は従来のプレス装置を示す断面略示
図、第３図は内輪のプレス成形品の平面図、第４
図は第３図の−線断面図、第５図は従来のプ
レス成形品の打抜き加工状態を示す断面図、第６
図はプレス成形品の不良品の断面図、第７図は改
良されたプレス成形品の断面図、第８図はそのプ
レス成形品の打抜き加工状態を示す断面図、第９
図〜第１２図はこの発明の一実施例を示すもの
で、第９図は成形前のプレス装置の断面略示図、
第１０図はその装置の分割型を周辺部材を含めて
示す平面図、第１１図は成形時のプレス装置の断
面略示図、第１２図はその装置の分割型を周辺部
材を含めて示す平面図である。
２０……内輪、２１……内輪のプレス成形品、
２４……素材、３０……台座、３１……ガイドリ
ング、３３……斜面、３４……ホルダ、３７……
下のポンチ、４１……分割型、４６……上型。
Fig. 1 is a cross-sectional view of a bar field type constant velocity universal joint, Fig. 2 is a schematic cross-sectional view showing a conventional press device, Fig. 3 is a plan view of a press-formed product of the inner ring, and Fig. 4 is a cross-sectional view of a bar field type constant velocity universal joint.
The figures are a cross-sectional view taken along the line -- in Fig. 3, Fig. 5 is a cross-sectional view showing the state of punching of a conventional press-formed product, and Fig. 6 is a cross-sectional view showing the state of punching of a conventional press-formed product.
The figure is a cross-sectional view of a defective press-formed product, FIG. 7 is a cross-sectional view of an improved press-formed product, FIG. 8 is a cross-sectional view showing the state of punching of the press-formed product, and FIG.
Figures to Figures 12 show one embodiment of the present invention, and Figure 9 is a schematic cross-sectional view of the press device before molding;
Fig. 10 is a plan view showing the split mold of the device including peripheral members, Fig. 11 is a schematic cross-sectional view of the press device during molding, and Fig. 12 shows the split mold of the device including peripheral members. FIG. 20... Inner ring, 21... Inner ring press molded product,
24...Material, 30...Pedestal, 31...Guide ring, 33...Slope, 34...Holder, 37...
Lower punch, 41...divided type, 46...upper type.
Claims (1)
レスするとともに、それと並行して素材を複数の
分割型にてその軸心方向にプレスすることによ
り、等速自在継手の内輪のプレス成形品をその内
部のバリ部が軸方向の一方端部に形出されるよう
に成形せしめることを特徴とする等速自在継手の
内輪のプレス成形法。1 Press the material in the axial direction with a punch and a flat die, and at the same time press the material in the axial direction with multiple split dies to create a press-formed product for the inner ring of a constant velocity universal joint. A press forming method for the inner ring of a constant velocity universal joint, characterized in that the inner ring is formed so that the internal burr portion is formed at one end in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11463683A JPS606238A (en) | 1983-06-24 | 1983-06-24 | Press forming method of inner ring of constant-velocity universal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11463683A JPS606238A (en) | 1983-06-24 | 1983-06-24 | Press forming method of inner ring of constant-velocity universal joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS606238A JPS606238A (en) | 1985-01-12 |
| JPH0459057B2 true JPH0459057B2 (en) | 1992-09-21 |
Family
ID=14642771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11463683A Granted JPS606238A (en) | 1983-06-24 | 1983-06-24 | Press forming method of inner ring of constant-velocity universal joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS606238A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH074642B2 (en) * | 1989-11-30 | 1995-01-25 | 株式会社平和時計製作所 | Winding method |
| JP7448341B2 (en) * | 2019-11-27 | 2024-03-12 | ジヤトコ株式会社 | Method for manufacturing a ring-shaped member and forging die used for manufacturing the ring-shaped member |
-
1983
- 1983-06-24 JP JP11463683A patent/JPS606238A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS606238A (en) | 1985-01-12 |
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