JPH0566215B2 - - Google Patents
Info
- Publication number
- JPH0566215B2 JPH0566215B2 JP63150611A JP15061188A JPH0566215B2 JP H0566215 B2 JPH0566215 B2 JP H0566215B2 JP 63150611 A JP63150611 A JP 63150611A JP 15061188 A JP15061188 A JP 15061188A JP H0566215 B2 JPH0566215 B2 JP H0566215B2
- Authority
- JP
- Japan
- Prior art keywords
- outer ring
- double
- cup
- die
- row bearing
- 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
- 239000000463 material Substances 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 24
- 238000004080 punching Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 7
- 238000010409 ironing Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 description 7
- 238000005242 forging Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 235000013372 meat Nutrition 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、自動車用ハブユニツト軸受外輪の製
造方法及び装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for manufacturing a hub unit bearing outer ring for an automobile.
〔従来の技術〕
自動車用ハブユニツト軸受は、ラジアル荷重と
スラスト荷重を同時に担持する必要があるため、
第７図に示す様な複列円錐ころ軸受Waや、第８
図に示すような複列アンギユラ玉軸受Wbが多く
使用されている。[Prior Art] Automotive hub unit bearings must support radial loads and thrust loads at the same time.
Double row tapered roller bearing Wa as shown in Fig. 7,
Double-row angular contact ball bearings Wb as shown in the figure are often used.
両軸受の外輪の製造方法として、パイプ素材か
ら旋削加工する方法と、丸棒素材から鍛造加工す
る方法とが知られている。 Known methods for manufacturing the outer rings of both bearings include turning a pipe material and forging a round bar material.
パイプ素材から旋削加工する方法は、取り代が
多いため、旋削加工時間が長くなるのみならず、
出来上がつた外輪のレース面は、フアイバーフロ
ーが施削加工によつて各所で分断されており、レ
ース面に亀裂や剥離が発生し易くなり、寿命が短
くなる欠点があつた。
The method of turning pipe material requires a large amount of machining allowance, which not only increases the turning time, but also
On the race surface of the completed outer ring, the fiber flow was broken at various places by machining, making the race surface prone to cracking and peeling, resulting in a shortened lifespan.
これに対し、丸棒素材から鍛造加工する方法
は、目標形状が軸方向中央部に肉厚となつている
ところから、先ず、第９図に示す様に、第１工程
で丸棒を所定外形に据込みし、次に、第２工程で
ダイ１の中で上下パンチ２，３により、外形を変
化させないで、素材の中央部を上下から加圧し
て、素材の中央の肉を周囲へ押し出し、これを軸
方向上下対称形状の円筒状の中間素材５を成形
し、第３工程で中底４を打ち抜いて外輪素材６を
鍛造し、この後、機械加工で所定形状に仕上げる
ようにしているので、前記の旋削加工方法に比べ
れば、旋削加工の取り代を少なくでき、また、フ
アイバーフローが分断されることを軽微とし得
る。 On the other hand, in the method of forging from a round bar material, the target shape is thick at the center in the axial direction, so in the first step the round bar is shaped into a predetermined external shape, as shown in Figure 9. Then, in the second step, the center part of the material is pressurized from above and below using upper and lower punches 2 and 3 in the die 1 without changing its external shape, and the meat in the center of the material is pushed out to the periphery. This is formed into a cylindrical intermediate material 5 with vertically symmetrical shape in the axial direction, and in a third step, the inner sole 4 is punched out to forge an outer ring material 6, which is then machined into a predetermined shape. Therefore, compared to the above-mentioned turning method, the machining allowance for turning can be reduced, and the fiber flow can be slightly interrupted.
しかし、上記従来の鍛造方法では、据込み素材
の中央部を上下から加圧して、中央部の肉を周囲
へ押し出し、さらに、これを軸方向上下に流動伸
展させて、所定の軸方向寸法と肉厚を確保しよう
とするもので、素材の流動性が不良となり易い。
即ち、上下のパンチ２，３で周囲に押し出された
肉は、周囲の肉をダイ１の内壁と上下パンチ２，
３の外周面との間の空気へ押し出すことになる
が、この素材の流動方向は、上下のパンチ２，３
の移動方向と逆方向であるため、流動性が悪く、
軸方向寸法が不足したり、上下両端に欠肉部や肉
厚不良が発生し易い欠点があつた。 However, in the conventional forging method described above, the central part of the upsetting material is pressurized from above and below to push out the meat in the central part to the periphery, and this is then flow-extended up and down in the axial direction to achieve a predetermined axial dimension. This is intended to ensure wall thickness, and the fluidity of the material tends to be poor.
That is, the meat pushed out to the periphery by the upper and lower punches 2 and 3 is transferred to the inner wall of the die 1 and the upper and lower punches 2 and 3.
The flow direction of this material is between the upper and lower punches 2 and 3.
Because the direction of movement is opposite to that of
There were shortcomings such as insufficient axial dimension, and lack of thickness and poor wall thickness at both the upper and lower ends.
また、従来では、別の製造方法として、外輪と
内輪とを別の素材で製造しており、材料歩留まり
が悪くなるのみならず、成形工程が多くなるた
め、コストアツプとなる欠点があつた。さらにま
た、単列外輪と内輪とを１つの素材からセツトで
成形する方法も公知（特開昭58−107234号公報御
参照）であるが、この方法は、成形した２個の単
列外輪を溶接して複列外輪を形成しており、溶接
作業が必要となるのみならず、この溶接の前処理
として外径面及び溶接すべき端面の旋削加工を必
要とし、コストがアツプすると共に、溶接部の強
度にバラツキが生じることが避けられず、苛酷な
条件で使用される自動車用ハブユニツト軸受外輪
としては、強度上並びに交通安全上から問題があ
る。 In addition, in the past, as another manufacturing method, the outer ring and the inner ring were manufactured from different materials, which not only resulted in poor material yield but also increased costs due to the increased number of molding steps. Furthermore, a method of molding a single-row outer ring and an inner ring as a set from one material is also known (see Japanese Patent Application Laid-open No. 107234/1983), but this method involves forming two molded single-row outer rings. The double-row outer ring is formed by welding, which not only requires welding work, but also requires turning the outer diameter surface and the end face to be welded as pre-treatment for welding, which increases costs and requires welding. As a hub unit bearing outer ring for an automobile is used under severe conditions, there are problems from the viewpoint of strength and traffic safety.
本発明は、強度上並びに安全性の面で問題がな
く、工程の削減、材料歩留まりの向上が計れる自
動車用ハブユニツト軸受外輪の製造方法及び装置
を提供することを目的とするものである。 SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for manufacturing an outer ring of a hub unit bearing for an automobile, which has no problems in terms of strength and safety, reduces the number of steps, and improves material yield.
上記目的を達成するため、本発明の製造方法
は、丸棒素材を軸方向に加圧して複列軸受外輪の
最終外径と略同一外径に据込む第１工程と、据込
まれた素材を軸方向の一方に押し出して複列軸受
外輪の最終軸方向寸法と略同一深さのカツプ形状
品とし、かつ、底部に、複列軸受外輪と組合され
る一方の内輪部分を同時成形する第２工程と、第
２工程の成形品の底部を打ち抜く第３工程と、底
部打ち抜き後の第２工程の成形品から内輪部分を
打抜き分離する第４工程と、内輪部分の分離後の
カツプ胴部を軸方向両端から加圧しつつカツプ胴
部の外径を変化させないで、その内径を軸方向両
端からしごき加工して軸方向中央部に対称形状の
厚肉部をもつ複列軸受外輪素材を成形する第５工
程とを具備したものである。
In order to achieve the above object, the manufacturing method of the present invention includes a first step of pressurizing a round bar material in the axial direction to have an outer diameter that is approximately the same as the final outer diameter of the outer ring of a double row bearing, and is extruded in one direction in the axial direction to form a cup-shaped product with a depth approximately the same as the final axial dimension of the outer ring of the double-row bearing, and at the same time, the inner ring portion of one of the inner rings to be combined with the outer ring of the double-row bearing is simultaneously molded on the bottom. 2 steps, a 3rd step of punching out the bottom of the molded product of the 2nd step, a 4th step of punching and separating the inner ring portion from the molded product of the 2nd step after the bottom punching, and a cup body after separation of the inner ring portion. While applying pressure from both ends in the axial direction, the inner diameter of the cup body is ironed from both ends in the axial direction without changing the outer diameter of the cup body, forming a double-row bearing outer ring material with a symmetrical thick walled part in the axial center. The fifth step is to perform the following steps.
本発明の製造装置は、複列軸受外輪の最終外径
と略同一内径をもつダイの中でノツクアウトと協
同して丸棒素材を軸方向に加圧して据込む据込み
パンチを有する据込み装置と、複列軸受外輪の最
終外径と略同一内径をもつダイの中でノツクアウ
ト及びストリツパと協同して据込み素材を複列軸
受外輪の最終方向寸法と略同一深さのカツプ形状
に成形し、かつ、カツプ形状品の底部に複列軸受
外輪と組合わされる一方の内輪部分を同時成形す
る押出パンチとダイを有する成形装置と、カツプ
形状品の内輪部分の底部を打抜くための底抜きパ
ンチ及びダイを有する底抜き装置と、底部が打ち
抜かれたカツプ形状品の内輪部分を打抜き分離す
る打抜きパンチ及びダイを有する内輪部分の分離
装置と、複列軸受外輪の最終外径と略同一内径を
もつダイの中で、内輪部分が分離されたカツプ形
状品の軸方向両端を軸方向に加圧する筒状のノツ
クアウト及びストリツパと協同してカツプ胴部の
内径を軸方向両端からしごき加工して軸方向中央
部に対称形状の厚肉部をもつ複列軸受外輪を成形
するための上下パンチを有するしごき成形装置と
を具備したものである。 The manufacturing device of the present invention is an upsetting device having an upsetting punch that presses and upsets a round bar material in the axial direction in cooperation with a knockout in a die having an inner diameter that is approximately the same as the final outer diameter of the outer ring of a double row bearing. Then, in a die having an inner diameter that is approximately the same as the final outer diameter of the outer ring of the double row bearing, the upsetting material is formed into a cup shape with a depth that is approximately the same as the final direction dimension of the outer ring of the double row bearing in cooperation with a knockout and a stripper. , and a molding device having an extrusion punch and die for simultaneously molding one inner ring portion to be combined with the outer ring of the double-row bearing at the bottom of the cup-shaped product, and a bottom punch for punching out the bottom of the inner ring portion of the cup-shaped product. A bottom punching device having a punch and a die, an inner ring separating device having a punch and a die for punching and separating the inner ring portion of a cup-shaped product with a punched bottom, and an inner ring portion having an inner diameter that is approximately the same as the final outer diameter of the outer ring of the double row bearing. In a die with The apparatus is equipped with an ironing forming device having upper and lower punches for forming a double-row bearing outer ring having a symmetrical thick-walled portion at the axial center.
本発明によれば、複列軸受外輪と、これに組合
される一方の内輪との１つの素材からセツトで成
形するため、材料歩留まりが向上する。また、複
列軸受外輪は頭初から一体形状で成形されるた
め、溶接や前加工の旋削等が不要である。さら
に、複列軸受外輪と、一方の内輪とを連続プレス
工程のみで製造することができる。
According to the present invention, since the outer ring of the double row bearing and the inner ring combined therewith are molded as a set from one material, the material yield is improved. Furthermore, since the double-row bearing outer ring is integrally molded from the beginning, there is no need for welding or pre-processing such as turning. Furthermore, the double-row bearing outer ring and one inner ring can be manufactured using only a continuous pressing process.
第１図は本発明の製造方法の工程順序説明図で
あつて、丸棒素材W1を、第１工程で据込んで所
定外径（例えば、最終外径と略同一）の円板状素
材W2とし、第２工程で、軸方向の一方に押し出
して、軸方向一端に底部W3及び一方の内輪部分
W6を有する所定深さ（最終軸方向寸法と略同一）
のカツプ形状品W4を成形し、第３工程は、底部
W3を打抜き加工し、第４工程では、内輪部分W6
を打抜き分離し、第５工程では、カツプ胴部を軸
方向両端から加圧しつつカツプ胴部の内径を軸方
向両端からしごき加工して軸方向中央部に対称形
状に厚肉部を有する外輪素材W5を形成したもの
である。
FIG. 1 is an explanatory diagram of the process sequence of the manufacturing method of the present invention, in which a round bar material W 1 is upset in the first step to produce a disc-shaped material with a predetermined outer diameter (for example, approximately the same as the final outer diameter). W 2 , and in the second step, extrude it to one side in the axial direction to form a bottom part W 3 and one inner ring part at one end in the axial direction.
Predetermined depth with W 6 (approximately the same as the final axial dimension)
A cup-shaped product W 4 is formed, and the third step is to form the bottom part.
W 3 is punched, and in the fourth process, the inner ring part W 6
In the fifth step, the cup body is pressurized from both axial ends and the inner diameter of the cup body is ironed from both axial ends to produce an outer ring material having a symmetrical thick walled portion in the axial center. This is what formed W5 .
第２図〜第６図は第１図の方法を実施する各工
程の装置の概略縦断側面図であつて、第２図は据
込装置Ａを示し、所定内径をもつダイ１０の中で
ノツクアウト１１と協同して丸棒素材W1を所定
外形の円板状素材W2に据込む据込みパンチ１２
を有している。第３図は成形装置B′を示し、所
定内径をもつダイ１３′の中でノツクアウト１４
及びストリツパ１５と協同して据込後の円板状素
材W2をカツプ形状品W4に成形し、かつ、カツプ
形状品W4の底部W3に一方の内輪部分W6を同時
に成形させるため、２段形状とした押出パンチ１
６′を有している。第４図は底抜き装置Ｃを示し、
所定形状をもつダイ１７の中でカツプ形状品W4
の底部W3を打ち抜くための底抜きパンチ１８を
有している。第５図は内輪分離装置Ｅを示し、所
定形状のダイ２４の中で内輪部分W6を分離する
打抜きパンチ２５を有している。第６図はしごき
成形装置Ｄを示し、所定内径をもつダイ１９の中
で、カツプ形状品W4の軸方向両端を軸方向に加
圧する筒状のノツクアウト２０及びストリツパ２
１と協同してカツプ胴部の内径を軸方向両端から
しごき加工して軸方向中央部に対称形状の肉厚部
をもつ外輪素材W5を形成するための上下対称形
状の上パンチ２２及び下パンチ２３を有してい
る。この場合、下パンチ２３は、ダイ１９の中で
定位置に固定されており、上パンチ２２は上下に
移動可能に支持され、その下降端位置が正確に設
定されて外輪素材W5の形状を成形するようにな
つている。ノツクアウト２０は下パンチ２０の外
側で昇降可能に支持され、下降端位置（成形終了
位置）が定位置となるように構成され、一方、ス
トリツパ２１は、上パンチ２２の外側で昇降可能
に支持され、上パンチ２２の下降時、ストリツパ
２１の上方への後退を定位置に阻止して上記ノツ
クアウト２０と協同し、外輪素材W5の軸方向寸
法を確保し、かつ、上下パンチ２２，２３による
厚肉部が軸方向中央部に形成されるように構成し
ている。 2 to 6 are schematic longitudinal sectional side views of the apparatus for each step of carrying out the method shown in FIG. 1, in which FIG. An upsetting punch 12 that works together with the upsetting punch 11 to upset the round bar material W 1 into a disc-shaped material W 2 having a predetermined external shape.
have. FIG. 3 shows a forming apparatus B' in which a knockout 14 is formed in a die 13' having a predetermined inner diameter.
and in cooperation with the stripper 15, to form the disk-shaped material W2 after upsetting into a cup-shaped product W4 , and to simultaneously form one inner ring portion W6 on the bottom W3 of the cup-shaped product W4 . , two-stage extrusion punch 1
6'. FIG. 4 shows the bottom punching device C,
A cup-shaped product W 4 is formed in the die 17 having a predetermined shape.
It has a bottom punch 18 for punching out the bottom part W3 of. FIG. 5 shows an inner ring separating device E, which has a punch 25 for separating inner ring portions W6 within a die 24 having a predetermined shape. FIG. 6 shows a ladder forming apparatus D, in which a cylindrical knockout 20 and a stripper 2 are placed in a die 19 having a predetermined inner diameter to press both axial ends of a cup-shaped product W 4 in the axial direction.
An upper punch 22 and a lower punch 22 having a vertically symmetrical shape are used to iron the inner diameter of the cup body from both ends in the axial direction to form an outer ring material W 5 having a symmetrically shaped thick part at the center in the axial direction. It has a punch 23. In this case, the lower punch 23 is fixed at a fixed position in the die 19, and the upper punch 22 is supported so as to be movable up and down, and its lowering end position is accurately set to shape the outer ring material W5 . It is designed to be molded. The knockout 20 is supported on the outside of the lower punch 20 so as to be movable up and down, and is configured such that the lowering end position (forming end position) is a fixed position, while the stripper 21 is supported on the outside of the upper punch 22 so as to be movable up and down. , when the upper punch 22 is lowered, it prevents the stripper 21 from retracting upward to a fixed position, cooperates with the above-mentioned knockout 20, secures the axial dimension of the outer ring material W 5 , and ensures the thickness of the stripper 21 due to the upper and lower punches 22 and 23. The structure is such that the flesh portion is formed at the center in the axial direction.
本発明は以上の構成からなり、次に動作を説明
する。 The present invention has the above configuration, and its operation will be explained next.
丸棒素材W1は、定寸に裁断され、加熱装置
（図示省略）で加熱されて据込工程に送り込まれ
てくる。据込工程では第２図のようにダイ１０の
中でノツクアウト１１と据込みパンチ１２とが協
同して丸棒素材W1を所定外径の円板状素材W1に
据込む。成形工程では、第３図のように底部W3
に一方の内輪部分W6を同時に成形したカツプ形
状品W4が成形される。底抜き工程では、第４図
のように底抜きが行われ、この後、内輪部分W6
を第５図に示す様に分離した上で、第６図に示す
様にしごき成形して外輪素材W5を成形する。 The round bar material W 1 is cut to a fixed size, heated by a heating device (not shown), and sent to the upsetting process. In the upsetting process, as shown in FIG. 2, the knockout 11 and the upsetting punch 12 work together in the die 10 to upset the round bar material W 1 into a disc-shaped material W 1 having a predetermined outer diameter. In the molding process, the bottom W 3
A cup-shaped product W 4 is formed by simultaneously molding one inner ring portion W 6 . In the bottoming process, bottoming is performed as shown in Figure 4, and after this, the inner ring portion W 6
After separating as shown in FIG. 5, ironing is performed as shown in FIG. 6 to form an outer ring material W5 .
上記外輪素材W5及び内輪部分W6は、機械加工
で所定形状に仕上られるものである。 The outer ring material W 5 and the inner ring portion W 6 are finished into predetermined shapes by machining.
上記実施例は、複列アンギユラ玉軸受外輪の場
合を示しているが、複列円錐ころ軸受外輪の場合
も同様であり、また、本発明は、温間、熱間鍛造
のみならず、冷間鍛造にも適用可能である。 Although the above embodiment shows the case of a double-row angular ball bearing outer ring, the same applies to the case of a double-row tapered roller bearing outer ring. It is also applicable to forging.
本発明の製造方法によれば、複列軸受外輪と、
これに組合わされる一方の内輪とを１つの素材か
らセツトで成形するものであるため、素材歩留ま
りが向上し、かつ、複列軸受外輪を頭初から一体
形状に成形するため、溶接や溶接の前加工（旋
削）等が不要であり、連続プレス工程のみで製造
できるため、工程の簡略化等によりコストダウン
が図れると共に、強度のバラツキが少なく、信頼
性が高いため交通安全面でも優れたものである。
According to the manufacturing method of the present invention, a double row bearing outer ring;
Since the combined inner ring and one of the inner rings are molded as a set from one material, the material yield is improved, and since the outer ring of the double row bearing is molded into an integral shape from the beginning, welding and welding are not required. Since no pre-processing (turning) is required and it can be manufactured using only a continuous press process, it is possible to reduce costs by simplifying the process, and it is also excellent in terms of traffic safety because there is little variation in strength and is highly reliable. It is.
また、本発明の製造装置によれば、連続プレス
工程のみで複列軸受外輪と一方の内輪とがセツト
で製造でき、強度及び信頼性の高い製品を歩留ま
りよく低コストで製造することができる。 Further, according to the manufacturing apparatus of the present invention, the double-row bearing outer ring and one inner ring can be manufactured as a set using only a continuous pressing process, and a product with high strength and reliability can be manufactured at a high yield and at low cost.
第１図は本発明の製造方法の工程順序説明図、
第２図〜第６図は第１図の方法を実施する各工程
の装置の概略縦断側面図、第７図及び第８図は本
発明が対称する自動車用ハブユニツト軸受の２つ
のタイプの概略断面図、第９図は従来の製造方法
の一例を示す工程順序説明図である。
W1……丸棒素材、W2……円板状素材、W3…
…底部、W4……カツプ形状品、W5……外輪素
材、W6……内輪部分、Ａ……据込装置、B′……
成形装置、Ｃ……底抜き装置、Ｄ……しごき成形
装置、Ｅ……内輪分離装置、１０，１３′，１７，
１９，２４……ダイ、１１，１４，２０……ノツ
クアウト、１２……据込みパンチ、１５，２１…
…ストリツパ、１６′……押出パンチ、１８……
底抜きパンチ、２２……上パンチ、２３……下パ
ンチ、２５……打抜きパンチ。
FIG. 1 is an explanatory diagram of the process sequence of the manufacturing method of the present invention,
2 to 6 are schematic vertical sectional side views of the apparatus for each step of carrying out the method of FIG. 1, and FIGS. 7 and 8 are schematic sectional views of two types of automotive hub unit bearings to which the present invention is applied 9 are process order explanatory diagrams showing an example of a conventional manufacturing method. W 1 ...Round bar material, W 2 ...Disc shaped material, W 3 ...
...Bottom, W 4 ... Cup-shaped product, W 5 ... Outer ring material, W 6 ... Inner ring part, A ... Upsetting device, B' ...
Forming device, C... Bottom punching device, D... Ironing forming device, E... Inner ring separation device, 10, 13', 17,
19,24...Die, 11,14,20...Knock out, 12...Upset punch, 15,21...
...Stripper, 16'...Extrusion punch, 18...
Bottom punch, 22...Top punch, 23...Bottom punch, 25...Cut punch.
Claims (1)
最終外径と略同一外径に据込む第１工程と、 据込まれた素材を軸方向の一方に押し出して複
列軸受外輪の最終軸方向寸法と略同一深さで、内
外径ともにストレートな外輪相当部分をもつカツ
プ形状品とし、かつ、底部に、複列軸受外輪と組
合される一方の内輪部分を同時成形する第２工程
と、 第２工程の成形品の底部を打ち抜く第３工程
と、底部打ち抜き後の第２工程の成形品から内輪
部分を打抜き分離する第４工程と、 内輪部分の分離後のカツプ胴部を軸方向両端か
ら加圧しつつカツプ胴部の外径を変化させない
で、その内径を軸方向両端からしごき加工して軸
方向中央部に対称形状の厚肉部をもつ複列軸受外
輪素材を成形する第５工程と、 を具備したことを特徴とする自動車用ハブユニツ
ト軸受外輪の製造方法。 ２ 複列軸受外輪の最終外径と略同一内径をもつ
「ダイ」の中でノツクアウトと協同して丸棒素材
を軸方向に加圧して据込む据込みパンチを有する
据込み装置と、 複列軸受外輪の最終外径と略同一内径をもつダ
イの中でノツクアウト及びストリツパと協同して
据込み素材を複列軸受外輪の最終軸方向寸法と略
同一深さで、内外径ともにストレートな外輪相当
部分をもつカツプ形状に成形し、かつ、カツプ形
状品の底部に複列軸受外輪と組合わされる一方の
内輪部分を同時成形する押出パンチとダイを有す
る成形装置と、 カツプ形状品の内輪部分の底部を打抜くための
底抜きパンチ及びダイを有する底抜き装置と、 底部が打ち抜かれたカツプ形状品の内輪部分を
打抜き分離する打抜きパンチ及びダイを有する内
輪部分の分離装置と、 複列軸受外輪の最終外径と略同一内径をもつダ
イの中で、内輪部分が分離されたカツプ形状品の
軸方向両端を軸方向に加圧する筒状のノツクアウ
ト及びストリツパと協同してカツプ胴部の内径を
軸方向両端からしごき加工して軸方向中央部に対
称形状の厚肉部をもつ複列軸受外輪を成形するた
めの上下パンチを有するしごき成形装置と を具備したことを特徴とする自動車用ハブユニツ
ト軸受外輪の製造装置。[Claims] 1. A first step in which the round bar material is axially pressurized to have an outer diameter that is approximately the same as the final outer diameter of the outer ring of the double-row bearing, and the upholstered material is pushed out in one direction in the axial direction. It is a cup-shaped product having a depth that is approximately the same as the final axial dimension of the outer ring of the double-row bearing, and a portion corresponding to the outer ring that is straight on both the inner and outer diameters. A second step of simultaneous molding, a third step of punching out the bottom of the molded product of the second step, a fourth step of punching and separating the inner ring portion from the molded product of the second step after the bottom punching, and after separation of the inner ring portion. A double-row bearing with a symmetrical thick-walled part in the axial center by applying pressure to the cup body from both axial ends and ironing the inner diameter from both axial ends without changing the outside diameter of the cup body. A method for manufacturing an outer ring of a hub unit bearing for an automobile, comprising: a fifth step of forming an outer ring material; 2. an upsetting device having an upsetting punch that works with a knockout to pressurize and upset the round bar material in the axial direction in a "die" having an inner diameter that is approximately the same as the final outer diameter of the outer ring of the double row bearing; In a die with an inner diameter that is approximately the same as the final outer diameter of the outer ring of the bearing, the upsetting material is worked together with a knockout and stripper to form an outer ring with a depth that is approximately the same as the final axial dimension of the outer ring of the double-row bearing, and whose inner and outer diameters are both straight. A forming device having an extrusion punch and a die for simultaneously forming an inner ring portion of the cup-shaped product to be combined with an outer ring of a double-row bearing at the bottom of the cup-shaped product; A bottom punching device having a bottom punch and a die for punching out the bottom; an inner ring separation device having a punch and a die for punching and separating the inner ring portion of a cup-shaped product with a punched bottom; and an outer ring of a double row bearing. In a die that has an inner diameter that is approximately the same as the final outer diameter of the cup body, the inner ring portion cooperates with a cylindrical knockout and stripper that presses both axial ends of the separated cup-shaped product in the axial direction to reduce the inner diameter of the cup body. A hub unit bearing for an automobile, characterized in that it is equipped with an ironing forming device having upper and lower punches for forming a double row bearing outer ring having a symmetrical thick walled portion at the axial center by ironing from both ends in the axial direction. Outer ring manufacturing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15061188A JPH01317638A (en) | 1988-06-17 | 1988-06-17 | Method and device for manufacturing hub unit bearing outer ring for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15061188A JPH01317638A (en) | 1988-06-17 | 1988-06-17 | Method and device for manufacturing hub unit bearing outer ring for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01317638A JPH01317638A (en) | 1989-12-22 |
| JPH0566215B2 true JPH0566215B2 (en) | 1993-09-21 |
Family
ID=15500665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15061188A Granted JPH01317638A (en) | 1988-06-17 | 1988-06-17 | Method and device for manufacturing hub unit bearing outer ring for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01317638A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007136529A (en) * | 2005-11-22 | 2007-06-07 | Nsk Ltd | Manufacturing method of high precision ring |
| JP2007147079A (en) * | 2007-01-19 | 2007-06-14 | Ntn Corp | Method of manufacturing hub ring and outward member of wheel bearing device |
| DE112009000609T5 (en) | 2008-03-13 | 2011-01-13 | NTN Corporation, Osaka-shi | Method for producing an outer ring, outer ring for double-row angular contact bearing, double-row angular contact bearing and bearing device for wheels |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04135029A (en) * | 1990-09-03 | 1992-05-08 | Kyoritsu Seiki:Kk | Method for cold forming short tube with intermediate flange |
| JP3366534B2 (en) * | 1996-09-19 | 2003-01-14 | 山陽特殊製鋼株式会社 | Warm or hot front-rear simultaneous extrusion high-speed die forging method and apparatus |
| JP4845243B2 (en) * | 1999-07-28 | 2011-12-28 | 株式会社カネミツ | Sheet metal member manufacturing method |
| JP4639089B2 (en) * | 2004-01-07 | 2011-02-23 | 山陽特殊製鋼株式会社 | Method for manufacturing ring with inner peripheral projection made of hollow metal tube |
| WO2006033327A1 (en) * | 2004-09-22 | 2006-03-30 | Nsk Ltd. | Raceway ring for radial ball bearing, method of producing the raceway ring, and method and device for producing high precision ring |
| JP2006090407A (en) * | 2004-09-22 | 2006-04-06 | Nsk Ltd | Bearing ring for radial ball bearing and its manufacturing method |
| JP4928331B2 (en) * | 2007-04-02 | 2012-05-09 | Ｎｔｎ株式会社 | Shell outer ring manufacturing method and shell needle roller bearing |
| JP5704870B2 (en) * | 2009-12-17 | 2015-04-22 | 山陽特殊製鋼株式会社 | Wheel bearing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5244557A (en) * | 1975-10-07 | 1977-04-07 | Toshiba Corp | Manufacturing process of cathode-ray tube fluorescent surface |
| JPS5824891U (en) * | 1981-08-03 | 1983-02-17 | 松下電工株式会社 | Infrared flame detector circuit |
| JPS58107234A (en) * | 1981-12-18 | 1983-06-25 | Nippon Seiko Kk | Manufacture of double row ball-and-roller bearing ring |
-
1988
- 1988-06-17 JP JP15061188A patent/JPH01317638A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5244557A (en) * | 1975-10-07 | 1977-04-07 | Toshiba Corp | Manufacturing process of cathode-ray tube fluorescent surface |
| JPS5824891U (en) * | 1981-08-03 | 1983-02-17 | 松下電工株式会社 | Infrared flame detector circuit |
| JPS58107234A (en) * | 1981-12-18 | 1983-06-25 | Nippon Seiko Kk | Manufacture of double row ball-and-roller bearing ring |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007136529A (en) * | 2005-11-22 | 2007-06-07 | Nsk Ltd | Manufacturing method of high precision ring |
| JP2007147079A (en) * | 2007-01-19 | 2007-06-14 | Ntn Corp | Method of manufacturing hub ring and outward member of wheel bearing device |
| DE112009000609T5 (en) | 2008-03-13 | 2011-01-13 | NTN Corporation, Osaka-shi | Method for producing an outer ring, outer ring for double-row angular contact bearing, double-row angular contact bearing and bearing device for wheels |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01317638A (en) | 1989-12-22 |
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