JPH09225573A - Roll threaded screw raw material rod and production of roll threaded screw using the same - Google Patents
Roll threaded screw raw material rod and production of roll threaded screw using the sameInfo
- Publication number
- JPH09225573A JPH09225573A JP3673296A JP3673296A JPH09225573A JP H09225573 A JPH09225573 A JP H09225573A JP 3673296 A JP3673296 A JP 3673296A JP 3673296 A JP3673296 A JP 3673296A JP H09225573 A JPH09225573 A JP H09225573A
- Authority
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- Prior art keywords
- diameter
- rolling
- material rod
- ball screw
- constricted
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、転造ボールねじ
用素材棒及びそれを用いた少なくとも一端に転造されて
いない軸部を有する転造ボールねじの製造方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material rod for a rolled ball screw and a method for manufacturing a rolled ball screw having a shaft portion which is not rolled at least at one end thereof.
【０００２】[0002]
【従来の技術】従来、転造ボールねじの製造方法として
は、通し転造方式が知られている。この通し転造方式
は、ロールダイスを被転造物たる素材棒に押し当てて転
造する際、ロールダイスのリード角と上記素材棒のリー
ド角に少しの角度差を設けて転造する方式である。ロー
ルダイス又は素材棒を相対的に回転させると、上記リー
ド角の差によってロールダイスと素材棒が相対的に移動
しながら転造する、いわゆる歩き現象を生じ、ロールダ
イスや素材棒を相対的に回転させるとき強制的に軸心方
向に動かすことなく自動的に転造を行う。2. Description of the Related Art Conventionally, as a method of manufacturing a rolled ball screw, a thread rolling method has been known. This thread rolling method is a method in which when the roll die is pressed against the material rod that is the object to be rolled, and there is a slight angle difference between the lead angle of the roll die and the lead angle of the material rod. is there. When the roll die or the material rod is relatively rotated, the roll die and the material rod are rolled while moving relatively due to the difference in the lead angle, so-called walking phenomenon occurs, and the roll die or the material rod is relatively moved. When it is rotated, it is automatically rolled without being forced to move in the axial direction.
【０００３】すなわち、図２（ａ）に示すように、素材
棒１とロールダイス２を相対回転させながら、素材棒１
をロールダイス２に押し当てると、ねじの転造が始ま
る。このとき、歩き現象が生じるので、自動的に転造が
進行する。素材棒１の途中で転造を終了させるときは、
図２（ｂ）に示すように、転造を終了させる位置でロー
ルダイス２を素材棒１から外すことにより行われる。That is, as shown in FIG. 2 (a), while the material rod 1 and the roll die 2 are relatively rotated, the material rod 1
When is pressed against the roll die 2, screw rolling starts. At this time, since a walking phenomenon occurs, rolling automatically proceeds. When finishing the rolling in the middle of the material bar 1,
As shown in FIG. 2B, the roll die 2 is removed from the material rod 1 at a position where rolling is completed.
【０００４】また、ロールダイス２の端部は、転造時に
生ずる摩擦を低減させるため、傾斜面９を形成してい
る。このため、素材棒１の途中で転造を止めると、転造
されたねじ部の端部は、完全なねじが転造されず不完全
ねじ部３となる。The end portion of the roll die 2 is formed with an inclined surface 9 in order to reduce friction generated during rolling. For this reason, if the rolling is stopped in the middle of the material rod 1, the threaded end of the threaded portion becomes an incomplete threaded portion 3 without rolling a complete screw.
【０００５】上記の方法により、転造されていない軸部
を有するボールねじを製造する場合は、任意の円柱状の
棒状体からなる素材棒を被転造物として用いることがで
きるが、図３（ａ）に示すような、大径部４と小径部５
を有する円柱状の棒状体からなる素材棒１を例としてあ
げられる。この場合、小径部５の径を、転造してボール
ねじを製造したときのねじ山の径が大径部４の径と同一
になるように選択すれば、転造されたボールねじの山径
とねじが転造されていない軸部との径が同一のボールね
じを製造することができる。When a ball screw having an unrolled shaft portion is manufactured by the above-mentioned method, a material rod made of an arbitrary cylindrical rod-shaped body can be used as a rolling object. Large diameter part 4 and small diameter part 5 as shown in a)
An example is a material rod 1 made of a cylindrical rod-shaped body having In this case, if the diameter of the small diameter portion 5 is selected so that the diameter of the thread when the ball screw is manufactured by rolling is the same as the diameter of the large diameter portion 4, the thread of the rolled ball screw is selected. It is possible to manufacture a ball screw having the same diameter as the diameter of the shaft portion on which the screw is not rolled.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、図３
（ａ）に示す大径部４と小径部５からなる素材棒１を用
いて転造を行った場合、小径部５の大径部４側の端部６
で転造が停止されると、この付近は、図３（ｂ）の一点
鎖線で囲まれた形状となり、この部分に不完全ねじ部３
が形成され、また、この部分に盛り上がり部分７、
７’、７”が形成される。この盛り上がり部分７、
７’、７”、及び不完全ねじ部は、転造を上記端部６で
停止させるため、転造により生ずる素材棒１の肉の逃げ
場がなくなり生ずるものである。However, FIG.
When rolling is performed using the material rod 1 including the large diameter portion 4 and the small diameter portion 5 shown in (a), the end portion 6 of the small diameter portion 5 on the large diameter portion 4 side is formed.
When the rolling is stopped at, the area around this becomes the shape surrounded by the alternate long and short dash line in FIG.
Is formed, and the raised portion 7,
7 ', 7 "are formed. This raised portion 7,
7 ′, 7 ″, and the incomplete thread portion stop rolling at the end portion 6, so that there is no escape area for the meat of the material rod 1 caused by rolling.
【０００７】このような盛り上がり部分７、７’、７”
が生じると、その部分だけ外形寸法が異なることにな
り、転造により得られるボールねじの外径面にブッシュ
等を嵌合してこれを摺動させる場合に障害となり得る。
また、形成される上記不完全ねじ部３は、ねじとして有
効に利用することができない。Such raised portions 7, 7 ', 7 "
If this occurs, the external dimensions will differ only in that part, which may be an obstacle when a bush or the like is fitted on the outer diameter surface of the ball screw obtained by rolling and is slid.
Further, the formed incomplete screw portion 3 cannot be effectively used as a screw.
【０００８】上記盛り上がり部分７、７’、７”を生じ
させないため、図４（ａ）に示すように、小径部５の大
径部４側の端部に転造により得られるボールねじの谷径
より小さい径を有するくびれ部８を設けることが考えら
れる。In order to prevent the above-mentioned raised portions 7, 7 ', 7 "from occurring, as shown in FIG. 4 (a), the valley of the ball screw obtained by rolling at the end of the small diameter portion 5 on the large diameter portion 4 side. It is conceivable to provide the constricted portion 8 with a diameter smaller than the diameter.
【０００９】しかし、上記くびれ部８は、転造により得
られるボールねじの谷径より小さい径で形成されている
ため、転造を行ったとき、図４（ｂ）に示すように、盛
り上がり部分は生成しないが、くびれ部８にねじ部が形
成されず、くびれ部８がそのまま残る。このため、得ら
れる転造ボールねじの強度は、このくびれ部８で低下す
る。However, since the constricted portion 8 is formed with a diameter smaller than the root diameter of the ball screw obtained by rolling, when rolling is performed, as shown in FIG. Is not generated, the threaded portion is not formed in the constricted portion 8 and the constricted portion 8 remains. Therefore, the strength of the obtained rolled ball screw is reduced at the constricted portion 8.
【００１０】そこで、この発明の課題は、盛り上がり部
分及び強度的に弱い部分を生じない、不完全ねじ部の軸
方向の長さを短くした転造ボールねじ用の素材棒及びそ
れを用いた製造方法を提供することである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a material rod for a rolled ball screw in which a raised portion and a weak portion in strength are not generated, and the axial length of an incomplete screw portion is shortened, and manufacturing using the same. Is to provide a method.
【００１１】[0011]
【課題を解決するための手段】上記の課題を解決するた
め、この発明は、転造によって製造されるボールねじ用
の素材棒において、上記素材棒は円柱状の棒状体であ
り、その棒状体は大径部と小径部を有し、上記小径部の
上記大径部側端部に上記小径部より小さい径を有するく
びれ部が形成されており、そのくびれ部の径は、上記小
径部の径より０．１ｍｍ以上小さく、かつ、転造によっ
て製造されるねじの谷径より大きい径を有することを特
徴とするものである。また、上記くびれ部は、上記小径
部の端部から徐々に小径となるテーパ部を含有させるこ
ともできる。In order to solve the above problems, the present invention relates to a material rod for a ball screw manufactured by rolling, wherein the material rod is a cylindrical rod-shaped body. Has a large diameter portion and a small diameter portion, a constricted portion having a diameter smaller than the small diameter portion is formed at the large diameter portion side end of the small diameter portion, and the diameter of the constricted portion is equal to that of the small diameter portion. It is characterized by having a diameter smaller than the diameter by 0.1 mm or more and larger than the root diameter of a screw produced by rolling. Further, the constricted portion may include a tapered portion whose diameter gradually decreases from the end of the small diameter portion.
【００１２】さらに、この発明は、上記の素材棒の上記
小径部及び上記くびれ部に転造を施することによる、少
なくとも一端に転造されていない軸部を有する転造ボー
ルねじの製造方法を提供するものである。Further, the present invention provides a method of manufacturing a rolled ball screw having a shaft portion which is not rolled at least at one end by rolling the small diameter portion and the constricted portion of the material rod. It is provided.
【００１３】上記くびれ部の径を上記所定の範囲に設定
したので、この部分での強度を低下するのを極力防ぐこ
とができる。Since the diameter of the constricted portion is set within the predetermined range, it is possible to prevent the strength in this portion from being lowered as much as possible.
【００１４】また、転造終了部分にテーパ部を設ける
と、転造時において、小径部の端部に生じるボールねじ
溝の段差を防止することができ、かつ、ボールねじ溝の
不連続部分を生じるのを防止することができるので、不
完全ねじ部の軸方向の長さを短くすることができる。Further, when the taper portion is provided at the rolling end portion, it is possible to prevent the step of the ball screw groove from occurring at the end of the small diameter portion at the time of rolling, and to prevent the discontinuous portion of the ball screw groove from occurring. Since it can be prevented from occurring, the axial length of the incomplete threaded portion can be shortened.
【００１５】さらに、上記くびれ部を設けることで、転
造により盛り上がり部分が生じるのを防ぐことができ
る。Further, by providing the above-mentioned constricted portion, it is possible to prevent a raised portion from being formed by rolling.
【００１６】[0016]
【発明の実施の形態】以下、この発明の実施形態を図面
を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１７】図１（ａ）に示すように、この発明にかか
る転造ボールねじに用いられる素材棒１１は、円柱状の
棒状体であり、大径部１２と小径部１３を有しており、
小径部１３の大径部１２側の端部に小径部１３より小さ
い径を有するくびれ部１４を形成している。As shown in FIG. 1 (a), the material rod 11 used in the rolling ball screw according to the present invention is a cylindrical rod-shaped body and has a large diameter portion 12 and a small diameter portion 13. ,
A constricted portion 14 having a diameter smaller than that of the small diameter portion 13 is formed at the end of the small diameter portion 13 on the large diameter portion 12 side.
【００１８】この小径部１３の径は、任意の径を採用す
ることができるが、転造によりボールねじを製造した
際、図１（ｃ）に示すように、軸部１６の径と完全ねじ
部１７のねじ山の径とを同じになるような径を採用する
こともできる。As the diameter of the small diameter portion 13, any diameter can be adopted. However, when a ball screw is manufactured by rolling, as shown in FIG. It is also possible to adopt a diameter that is the same as the diameter of the thread of the portion 17.
【００１９】また、くびれ部１４の径は、小径部の径よ
り０．１ｍｍ以上小さくするのがよく、０．２ｍｍ以上
小さくするのがより好ましい。さらに、くびれ部１４の
径を、転造後のねじの谷径より大きくするのがよい。く
びれ部１４の径を小径部の径より０．１ｍｍ以上小さく
することにより、転造で生ずる素材棒１１の肉の逃げ場
を確保することができ、盛り上がり部分が発生するのを
防止できる。さらに、くびれ部１４の径を転造後のねじ
の谷径より大きくすることにより、ある程度の太さを確
保できるので、この部分での強度が低下するのを極力防
ぐことができる。The diameter of the constricted portion 14 is preferably smaller than the diameter of the small diameter portion by 0.1 mm or more, more preferably 0.2 mm or more. Furthermore, it is preferable that the diameter of the constricted portion 14 is larger than the root diameter of the screw after rolling. By making the diameter of the constricted portion 14 smaller than the diameter of the small diameter portion by 0.1 mm or more, it is possible to secure an escape area for the meat of the material rod 11 which is caused by rolling, and prevent a raised portion from occurring. Further, by making the diameter of the constricted portion 14 larger than the root diameter of the screw after the rolling, it is possible to secure a certain thickness, so that it is possible to prevent the strength at this portion from being lowered as much as possible.
【００２０】くびれ部１４は小径部１３より小さい径を
有しており、かつ、転造される部分の終端部に位置する
ので、図１（ｃ）の一点鎖線で囲まれる部分に不完全ね
じ部１８が形成される。このため、くびれ部１４の軸方
向の長さは、特に限定されるものではないが、許容され
る不完全ねじ部１８の長さとの兼ね合いで決定すること
が好ましい。具体的には、２〜３０ｍｍが好ましく、２
〜２０ｍｍがより好ましく、４〜１５ｍｍが更に好まし
い。Since the constricted portion 14 has a diameter smaller than that of the small diameter portion 13 and is located at the end portion of the rolled portion, an incomplete screw is formed in the portion surrounded by the one-dot chain line in FIG. 1 (c). The part 18 is formed. Therefore, the axial length of the constricted portion 14 is not particularly limited, but is preferably determined in consideration of the allowable length of the incomplete threaded portion 18. Specifically, 2 to 30 mm is preferable, and 2
-20 mm is more preferable, and 4-15 mm is further preferable.
【００２１】また、くびれ部１４上に、図１（ａ）に示
すように、必要に応じて、小径部１３の端部から徐々に
小径となるテーパ部１５を形成してもよい。テーパ部１
５をくびれ部１４上に設けると、転造時において、小径
部１３の端部に生じる段差を防止することができる。こ
のテーパ部１５は、上記小径部１３の端部から、くびれ
部１４の任意の位置までの間に設けることができる。す
なわち、上記くびれ部１４は、テーパ部１５が設けられ
ていない状態から、図１（ｂ）に示すように、くびれ部
１４全体がテーパ部１５’となっている形態の範囲で、
任意の形態をとることができる。特に、テーパ部１５の
軸方向の長さを、小径部１３の端部から、４〜１５ｍｍ
とするのが好ましい。なお、図１（ｂ）の場合における
上記くびれ部１４の径とは、テーパ部１５’の径の最も
小さい部分、すなわち、テーパ部１５’が大径部１２と
接触している部分のテーパ部１５’の径をいう。Further, as shown in FIG. 1A, a tapered portion 15 having a diameter gradually reduced from the end of the small diameter portion 13 may be formed on the constricted portion 14 as required. Taper part 1
When 5 is provided on the constricted portion 14, it is possible to prevent a step generated at the end of the small diameter portion 13 during rolling. The tapered portion 15 can be provided between the end portion of the small diameter portion 13 and an arbitrary position of the constricted portion 14. That is, the constricted portion 14 has a range in which the tapered portion 15 is not provided and the constricted portion 14 is entirely tapered as shown in FIG. 1B.
It can take any form. In particular, the axial length of the tapered portion 15 is 4 to 15 mm from the end of the small diameter portion 13.
It is preferred that In addition, the diameter of the constricted portion 14 in the case of FIG. 1B means a portion where the diameter of the tapered portion 15 ′ is the smallest, that is, the tapered portion where the tapered portion 15 ′ is in contact with the large diameter portion 12. 15 'diameter.
【００２２】図１（ａ）（ｂ）に示す素材棒１１を図２
に示すような方法と同様の方法で転造を行い、大径部１
２とくびれ部１４との境で転造を終了させると、図１
（ｃ）に示すように、一端に転造されていない軸部１６
を有する転造ボールねじを製造することができる。この
軸部１６は、転造前の大径部１２に相当する。The material rod 11 shown in FIGS. 1 (a) and 1 (b) is shown in FIG.
Rolling is performed by the same method as that shown in Fig.
2 is completed at the boundary between the 2 and the constricted portion 14,
As shown in (c), the shaft portion 16 not rolled at one end
It is possible to manufacture a rolled ball screw having The shaft portion 16 corresponds to the large diameter portion 12 before rolling.
【００２３】ところで、両端に転造されていない軸部を
有する転造ボールねじは、図２において、ロールダイス
を被転造物たる素材棒の途中に押しつけて転造を開始
し、所定位置で転造を終了させることにより製造するこ
とができる。このとき、上記ボールねじの転造が施され
る部分のうち、転造終了側の端部にのみ上記くびれ部を
設ければよい。転造開始側の端部は、素材棒の肉が余る
ことはなく、盛り上がり部が生じず、不完全ねじ部も生
じにくいからである。By the way, in a rolled ball screw having shafts which are not rolled at both ends, in FIG. 2, a roll die is pressed in the middle of a material rod which is a rolled object to start rolling, and rolled at a predetermined position. It can be produced by finishing the production. At this time, the constricted portion may be provided only at the end portion of the rolling end side of the portion of the ball screw to be rolled. This is because, at the end on the rolling start side, the meat of the raw material bar is not left over, the raised portion does not occur, and the incomplete threaded portion hardly occurs.
【００２４】得られた転造ボールねじのねじ部は、完全
なねじを有する完全ねじ部１７と、不完全なねじを有す
る不完全ねじ部１８とからなっており、不完全ねじ部１
８の終端部は、切り上がり形状となっている。The thread part of the obtained rolled ball screw is composed of a complete thread part 17 having a perfect thread and an incomplete thread part 18 having an incomplete thread.
The terminal portion of No. 8 has a raised shape.
【００２５】不完全ねじ部１８のねじ山の径は、転造前
のくびれ部１４から形成されているので、完全ねじ部１
７のねじ山の径より少し小さくなる。その高さの程度
は、素材棒１１のくびれ部１４及びそこに設けられたテ
ーパ部１５によって調節することができ、不完全ねじ部
１８のねじ山の径と完全ねじ部１７のねじ山の径をほぼ
同一にすることもできる。The diameter of the thread of the incompletely threaded portion 18 is formed from the constricted portion 14 before rolling, so that the completely threaded portion 1
It is slightly smaller than the diameter of the thread of 7. The degree of the height can be adjusted by the constricted portion 14 of the material rod 11 and the tapered portion 15 provided there, and the diameter of the thread of the incomplete thread portion 18 and the diameter of the thread of the complete thread portion 17 can be adjusted. Can be almost the same.
【００２６】また、くびれ部１４を設けたので、転造時
の抵抗を低下させることができ、肉の移動が容易になる
と共に、肉の逃げ場ができて、この不完全ねじ部１８の
軸方向の長さを短くすることができる。Further, since the constricted portion 14 is provided, the resistance during rolling can be reduced, the meat can be easily moved, and the meat can escape. The length of can be shortened.
【００２７】さらに、転造終了部分にテーパ部を設けた
場合は、転造時において、小径部１３の端部に生じるボ
ールねじ溝の段差を防止することができ、かつ、ボール
ねじ溝の不連続部分を生じるのを防止することができ
て、不完全ねじ部１８の軸方向の長さを短くすることに
もつながる。Further, when the taper portion is provided at the rolling end portion, it is possible to prevent the step of the ball screw groove generated at the end of the small diameter portion 13 at the time of rolling and to prevent the ball screw groove from becoming uneven. It is possible to prevent a continuous portion from being produced, which leads to a reduction in the axial length of the incomplete thread portion 18.
【００２８】[0028]
【発明の効果】この発明によれば、上記くびれ部の径を
上記所定の範囲に設定したので、この部分での強度を低
下するのを極力防ぐことができる。According to the present invention, since the diameter of the constricted portion is set within the predetermined range, it is possible to prevent the strength at this portion from being lowered as much as possible.
【００２９】また、転造終了部分にテーパ部を設ける
と、転造時において、小径部の端部に生じるボールねじ
溝の段差を防止することができ、かつ、ボールねじ溝の
不連続部分を生じるのを防止することができるので、不
完全ねじ部の軸方向の長さを短くすることができる。Further, when the taper portion is provided at the rolling end portion, it is possible to prevent the step of the ball screw groove from occurring at the end of the small diameter portion at the time of rolling and to prevent the discontinuous portion of the ball screw groove. Since it can be prevented from occurring, the axial length of the incomplete threaded portion can be shortened.
【００３０】さらに、上記くびれ部を設けることで、転
造により盛り上がり部分が生じるのを防ぐことができ
る。Further, by providing the above-mentioned constricted portion, it is possible to prevent a raised portion from being formed by rolling.
【図１】（ａ）本願発明の素材棒の例を示す正面図 （ｂ）本願発明の素材棒の他の例を示す正面図 （ｃ）本願発明の素材棒を転造して得られるボールねじ
の例を示す正面図1A is a front view showing an example of a material rod of the present invention, FIG. 1B is a front view showing another example of a material rod of the present invention, and FIG. 1C is a ball obtained by rolling the material rod of the present invention. Front view showing an example of screws
【図２】（ａ）（ｂ）ボールねじの転造方法の例を示す
概略図2A and 2B are schematic views showing an example of a rolling method of a ball screw.
【図３】（ａ）従来の素材棒の例を示す正面図 （ｂ）従来の素材棒を転造して得られるボールねじの例
を示す正面図FIG. 3A is a front view showing an example of a conventional material rod. FIG. 3B is a front view showing an example of a ball screw obtained by rolling a conventional material rod.
【図４】（ａ）従来の素材棒の他の例を示す正面図 （ｂ）従来の素材棒を転造して得られるボールねじの他
の例を示す正面図FIG. 4A is a front view showing another example of a conventional material rod. FIG. 4B is a front view showing another example of a ball screw obtained by rolling a conventional material rod.
１ 素材棒 ２ ロールダイス ３ 不完全ねじ部 ４ 大径部 ５ 小径部 ６ 端部 ７、７’、７” 盛り上がり部分 ８ くびれ部 ９ 傾斜面 １１ 素材棒 １２ 大径部 １３ 小径部 １４ くびれ部 １５ テーパ部 １６ 軸部 １７ 完全ねじ部 １８ 不完全ねじ部 1 Material Bar 2 Roll Die 3 Incomplete Threaded Part 4 Large Diameter Part 5 Small Diameter Part 6 Ends 7, 7 ', 7 "Raised Part 8 Constricted Part 9 Inclined Surface 11 Material Bar 12 Large Diameter Part 13 Small Diameter Part 14 Constricted Part 15 Tapered part 16 Shaft part 17 Complete thread part 18 Incomplete thread part
Claims (3)
素材棒において、上記素材棒は円柱状の棒状体であり、
その棒状体は大径部と小径部を有し、上記小径部の上記
大径部側端部に上記小径部より小さい径を有するくびれ
部が形成されており、そのくびれ部の径は、上記小径部
の径より０．１ｍｍ以上小さく、かつ、転造によって製
造されるねじの谷径より大きい径を有することを特徴と
する転造ボールねじ用素材棒。1. A material rod for a ball screw manufactured by rolling, wherein the material rod is a cylindrical rod-shaped body,
The rod-shaped body has a large diameter portion and a small diameter portion, a constricted portion having a diameter smaller than the small diameter portion is formed at the large diameter portion side end portion of the small diameter portion, and the diameter of the constricted portion is the above. A material rod for a rolled ball screw, which is smaller than a diameter of a small diameter portion by 0.1 mm or more and has a diameter larger than a root diameter of a screw produced by rolling.
徐々に小径となるテーパ部を含有することを特徴とする
請求項１に記載の転造ボールねじ用素材棒。2. The material rod for a rolled ball screw according to claim 1, wherein the constricted portion includes a taper portion whose diameter gradually decreases from the end of the small diameter portion.
径部及び上記くびれ部に転造を施することによる、少な
くとも一端に転造されていない軸部を有する転造ボール
ねじの製造方法。3. A rolled ball screw having an unrolled shaft portion at least at one end, by rolling the small diameter portion and the constricted portion of the raw material rod according to claim 1. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3673296A JPH09225573A (en) | 1996-02-23 | 1996-02-23 | Roll threaded screw raw material rod and production of roll threaded screw using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3673296A JPH09225573A (en) | 1996-02-23 | 1996-02-23 | Roll threaded screw raw material rod and production of roll threaded screw using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09225573A true JPH09225573A (en) | 1997-09-02 |
Family
ID=12477916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3673296A Pending JPH09225573A (en) | 1996-02-23 | 1996-02-23 | Roll threaded screw raw material rod and production of roll threaded screw using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09225573A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100799370B1 (en) * | 2006-06-27 | 2008-01-31 | (주)윈윈개발 | Connection end of deformed bar for reinforcing concrete |
| JP2008025620A (en) * | 2006-07-18 | 2008-02-07 | Toyota Motor Corp | Screw member and manufacturing method therefor |
| JP2011173169A (en) * | 2003-09-06 | 2011-09-08 | Schaeffler Technologies Gmbh & Co Kg | Machine element |
| WO2020031637A1 (en) * | 2018-08-10 | 2020-02-13 | 日本精工株式会社 | Screw shaft and method for manufacturing same, and steering-wheel electric position regulation device and method for manufacturing same |
| CN111655395A (en) * | 2018-03-12 | 2020-09-11 | 日立汽车系统株式会社 | Method for manufacturing steering shaft of steering device |
| DE212021000486U1 (en) | 2020-10-13 | 2023-10-02 | Nsk Ltd. | Screw shaft and electric steering wheel position adjustment device for a steering wheel |
-
1996
- 1996-02-23 JP JP3673296A patent/JPH09225573A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011173169A (en) * | 2003-09-06 | 2011-09-08 | Schaeffler Technologies Gmbh & Co Kg | Machine element |
| KR100799370B1 (en) * | 2006-06-27 | 2008-01-31 | (주)윈윈개발 | Connection end of deformed bar for reinforcing concrete |
| JP2008025620A (en) * | 2006-07-18 | 2008-02-07 | Toyota Motor Corp | Screw member and manufacturing method therefor |
| CN111655395A (en) * | 2018-03-12 | 2020-09-11 | 日立汽车系统株式会社 | Method for manufacturing steering shaft of steering device |
| WO2020031637A1 (en) * | 2018-08-10 | 2020-02-13 | 日本精工株式会社 | Screw shaft and method for manufacturing same, and steering-wheel electric position regulation device and method for manufacturing same |
| CN112566736A (en) * | 2018-08-10 | 2021-03-26 | 日本精工株式会社 | Screw shaft and method for manufacturing same, and electric position adjustment device for steering wheel and method for manufacturing same |
| JPWO2020031637A1 (en) * | 2018-08-10 | 2021-08-12 | 日本精工株式会社 | The screw shaft and its manufacturing method, and the electric position adjusting device for the steering wheel and its manufacturing method. |
| CN112566736B (en) * | 2018-08-10 | 2023-03-28 | 日本精工株式会社 | Screw shaft, method for manufacturing same, feed screw mechanism, electric position adjustment device for steering wheel, and method for manufacturing same |
| US12043302B2 (en) | 2018-08-10 | 2024-07-23 | Nsk Ltd. | Screw shaft and method for manufacturing same, and electric position adjusting device for steering wheel and method for manufacturing same |
| DE212021000486U1 (en) | 2020-10-13 | 2023-10-02 | Nsk Ltd. | Screw shaft and electric steering wheel position adjustment device for a steering wheel |
| US11975755B2 (en) | 2020-10-13 | 2024-05-07 | Nsk Ltd. | Screw shaft and method for producing same, and electric position-adjusting device for steering wheel |
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