JP3284069B2 - Female thread member - Google Patents
Female thread memberInfo
- Publication number
- JP3284069B2 JP3284069B2 JP35075796A JP35075796A JP3284069B2 JP 3284069 B2 JP3284069 B2 JP 3284069B2 JP 35075796 A JP35075796 A JP 35075796A JP 35075796 A JP35075796 A JP 35075796A JP 3284069 B2 JP3284069 B2 JP 3284069B2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- female screw
- screw
- spiral groove
- screw member
- 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
- Transmission Devices (AREA)
- Forging (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、雄ねじとの噛合い
性が良好な雌ねじ部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a female screw member having good engagement with a male screw.
【０００２】[0002]
【従来の技術】一般にねじは鍛造に代表される塑性変形
工法や切削工法により形成され、用途によって種々の加
工方法が選択される。従来、雌ねじをタップにより形成
する場合、予め粗材に形成する下穴は、図６に示すよう
に、タップの先端部をガイドする開口側に位置したガイ
ド孔部１と、該ガイド孔部１と同軸的に開口と遠ざかる
方向に延びるねじ形成用下穴部２とをもち、該ガイド孔
部１とねじ形成用下穴部２との間に、ガイド孔部１の底
を形成し軸中心方向に傾斜してねじ形成用下穴部２に連
設する傾斜底３が形成される。2. Description of the Related Art In general, screws are formed by a plastic deformation method such as forging or a cutting method, and various processing methods are selected depending on the application. Conventionally, when a female screw is formed by a tap, a pilot hole formed in advance in a rough material is, as shown in FIG. 6, a guide hole 1 located on an opening side for guiding a tip end of the tap, and a guide hole 1 And a screw forming pilot hole 2 extending coaxially and away from the opening. A bottom of the guide hole 1 is formed between the guide hole 1 and the screw forming pilot hole 2 to form a shaft center. An inclined bottom 3 is formed which is inclined in the direction and is provided continuously with the screw forming pilot hole 2.
【０００３】そして、雌ねじの形成は、タップをガイド
孔部１より挿入して圧力を加えつつ回転させる。これに
より、タップの食いつき部が傾斜底３に食込み、ねじ形
成用下穴部２の内径を中心に山と谷からなるねじ穴が形
成される。To form a female screw, a tap is inserted from the guide hole 1 and rotated while applying pressure. As a result, the biting portion of the tap bites into the inclined bottom 3, and a screw hole including a peak and a valley is formed around the inner diameter of the screw forming pilot hole 2.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記形
状の下穴にタップを挿入して形成される従来の雌ねじ部
材は、傾斜底３の部分に不完全ねじ部が形成され、か
つ、この不完全ねじ部が雄ねじとの噛合い不良を起しや
すい状態に形成されるおそれがある。すなわち、例えば
転造によるねじ部の形成過程は、転造タップの山部がね
じ穴の谷に位置した部分を両側に盛上げるように変形さ
せねじの山を形成するように進行するものであるが、傾
斜底３の部分は、盛上げられる量が不足し、図７に示す
ように、本来のねじ溝５に位置的に隣接して山の頂上部
分に凹部４が形成され、二条ねじのようになる。このよ
うな凹部４が形成されると、雄ねじを挿入したとき、雄
ねじの山が螺子溝５でなく凹部４に噛合うおそれがあ
り、ねじを潰してしまうことがあった。However, in the conventional female screw member formed by inserting a tap into the prepared hole of the above shape, an incomplete screw portion is formed at the inclined bottom 3 and the incomplete screw portion is formed. There is a possibility that the threaded portion is formed in a state in which poor engagement with the male thread is likely to occur. That is, for example, the process of forming the threaded portion by rolling proceeds so that the crest portion of the rolling tap is deformed so as to bulge the portion located at the valley of the screw hole on both sides to form a thread crest. However, the portion of the inclined bottom 3 that is raised is insufficient, and as shown in FIG. 7, a recess 4 is formed at the top of the hill adjacent to the original screw groove 5 in position, and as shown in FIG. become. When such a concave portion 4 is formed, when a male screw is inserted, the thread of the male screw may engage with the concave portion 4 instead of the screw groove 5, and the screw may be crushed.
【０００５】また、切削タップを用いる場合にも、該切
削タップと被加工材との軸方向相対位置あるいは押力が
切削タップの食いつき動作に影響し、相対位置や押力を
微妙に調整しないと、不完全ねじ部のねじ山がやせたり
して、雄ねじとの噛合いが悪い雌ねじが形成されてしま
う。本発明は、不完全ねじ部ができるだけ少なく、ねじ
穴の始り部分からねじピッチに形成され、雄ねじと常に
正常に係合する雌ねじ部材を提供することを解決すべき
課題とする。[0005] Even when a cutting tap is used, the axial relative position or pressing force between the cutting tap and the workpiece affects the biting operation of the cutting tap, and the relative position and pressing force must be finely adjusted. In addition, the thread of the incompletely threaded portion is thinned, and a female screw with poor engagement with the male screw is formed. An object of the present invention is to provide a female screw member which has as few screw threads as possible, is formed at a screw pitch from the beginning of a screw hole, and always normally engages with a male screw.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決すべく本
発明の発明者等は種々検討を重ね、ガイド孔部の底を形
成する軸中心方向に傾斜した面がねじ加工前の粗材の状
態で形成しようとする雌ねじのリードに予め一致したラ
セン状に形成されていて、このガイド孔部の底に連続し
てラセン溝が形成された雌ねじ部材とすることにより、
問題を解決できると考えた。In order to solve the above problems, the inventors of the present invention have conducted various studies and found that the surface forming the bottom of the guide hole, which is inclined toward the center of the axis, is the rough material before threading. The female screw member is formed in a helical shape that matches the lead of the female screw to be formed in advance in a state, and has a helical groove formed continuously at the bottom of the guide hole.
We thought we could solve the problem.
【０００７】すなわち、本発明の課題を解決した請求項
１の発明は、開口側に位置する口径の大きいガイド孔部
と該ガイド孔部と同軸的に該開口と遠ざかる方向に延び
るねじ穴部とからなるねじ穴をもつ雌ねじ部材であっ
て、該ガイド孔部の底は軸方向にラセン状に延びかつ軸
中心方向に傾斜した傾斜ラセン溝をもつ傾斜底となり、
該傾斜ラセン溝は該ねじ穴部のラセン溝に連続している
ものである。That is, according to the first aspect of the present invention, there is provided a guide hole having a large diameter located on the opening side and a screw hole extending coaxially with the guide hole in a direction away from the opening. A female screw member having a screw hole consisting of: a bottom of the guide hole portion is a sloping bottom having a helical groove extending in a helical shape in the axial direction and having an inclined helical groove inclined in the axial center direction,
The inclined spiral groove is continuous with the spiral groove of the screw hole.
【０００８】上記構成の雌ねじ部材は、ガイド孔部の底
を形成する面が粗材の状態で予めねじのリードとほぼ一
致したラセン状の傾斜ラセン溝をもつ傾斜底として形成
され、該傾斜ラセン溝よりねじ穴部のラセン溝が連続し
ているので、ねじの始り部分から正常なピッチでねじ穴
部が形成され、挿入された雄ねじと確実に噛合う。請求
項２の発明は、前記傾斜ラセン溝をもつ傾斜底を鍛造に
よって形成することにある。In the female screw member having the above-described structure, the surface forming the bottom of the guide hole is formed as a slanted bottom having a helical helical groove that is approximately in advance with the lead of the screw in a coarse material state. Since the spiral groove of the screw hole portion is continuous from the groove, the screw hole portion is formed at a normal pitch from the beginning of the screw, and reliably meshes with the inserted male screw. The invention of claim 2 is to form the inclined bottom having the inclined spiral groove by forging.
【０００９】請求項３の発明は、前記ねじ穴部を転造タ
ップによって形成することにある。請求項４の発明は、
前記ねじ穴部を切削タップによって形成することにあ
る。請求項５の発明は、前記ガイド穴部が前記傾斜ラセ
ン溝をもつ傾斜底の開口側にシリンダ状の導入孔をもつ
ことにある。この導入孔によりタップをより正確に軸方
向に挿入することができる。A third aspect of the present invention is that the screw hole is formed by a rolling tap. The invention of claim 4 is
The screw hole is formed by a cutting tap. The invention according to claim 5 is that the guide hole has a cylindrical introduction hole on the opening side of the inclined bottom having the inclined spiral groove . With this introduction hole, the tap can be more accurately inserted in the axial direction.
【００１０】請求項６及び７の発明は、請求項１記載の
雌ねじ部材をそれぞれナット及びナット以外の機械部品
に限定したものである。The inventions of claims 6 and 7 limit the female screw member according to claim 1 to a nut and mechanical parts other than the nut.
【００１１】[0011]
【発明の実施の形態】上記傾斜ラセン溝をもつ傾斜底
は、鍛造によって形成することができる。この場合の工
具は、ねじ穴形成前の粗材にガイド孔部を形成する大径
部と、該大径部から軸方向に延び傾斜ラセン底を形成す
るテーパ部からなる金型を用いる。なお、ねじ穴となる
下穴は、打抜き、ドリル等により形成する。BEST MODE FOR CARRYING OUT THE INVENTION The inclined bottom having the inclined spiral groove can be formed by forging. In this case, the tool used is a mold having a large-diameter portion that forms a guide hole in the coarse material before the screw hole is formed, and a taper portion that extends in the axial direction from the large-diameter portion and forms an inclined spiral bottom. In addition, the pilot hole used as a screw hole is formed by punching, drilling, or the like.
【００１２】また、上記傾斜ラセン溝をもつ傾斜底の傾
斜ラセン溝は、ねじピッチ分だけのリードをもたせるこ
とが理想的であるが、１〜１．５ピッチの間であれば、
ねじ穴部のラセン溝に連続させた傾斜ラセン溝の形成が
可能である。更に上記傾斜ラセン溝は、３６０°を最大
としてそれより若干小さな角度範囲に形成することが好
ましい。３６０°の場合は、ねじ形成前の粗材の状態で
傾斜ラセン溝が一周してできる段差面が軸平面に一致す
る。傾斜ラセン溝の形成角度範囲が３６０°より小さく
なるのに応じて、前記段差面が周方向に長くなり、傾斜
しただけの底にタップが食いつく場合の角度に近づく。Further, the inclination of the inclined bottom having the inclined spiral groove can be adjusted.
It is ideal that the oblique spiral groove has a lead corresponding to the screw pitch, but if it is between 1 and 1.5 pitches,
It is possible to form an inclined spiral groove continuous with the spiral groove of the screw hole . Further, it is preferable that the inclined spiral groove be formed in an angle range slightly smaller than the maximum 360 °. In the case of 360 °, the step surface formed by making a round of the inclined spiral groove in the state of the coarse material before forming the screw coincides with the axial plane. As the formation angle range of the inclined spiral groove becomes smaller than 360 °, the step surface becomes longer in the circumferential direction, and approaches the angle at which the tap bites into the simply inclined bottom.
【００１３】上記ねじ穴部は転造タップによって形成す
ることができる。該転造タップは、雄ねじの山頂位置が
ガイド孔部の内壁に接する外径のものを用いる。転造タ
ップの雄ねじは、山が谷の位置より始まるタイプでもよ
いし、山の始まり部分がカットされているタイプでもよ
い。上記ねじ穴部は切削タップによって形成することが
できる。該切削タップは、先端の刃の面取り部を傾斜ラ
セン底に合わせた形状にすることが好ましい。また、切
削タップは先端にドリルをもっているタイプでもよい。The screw hole can be formed by a rolling tap. As the rolling tap, one having an outer diameter at which the crest position of the male screw is in contact with the inner wall of the guide hole is used. The external thread of the rolling tap may be of a type in which the peak starts from the position of the valley, or may be of a type in which the starting portion of the peak is cut. The screw hole can be formed by a cutting tap. It is preferable that the cutting tap has a shape in which the chamfered portion of the tip blade is fitted to the inclined spiral bottom. Further, the cutting tap may be of a type having a drill at the tip.
【００１４】上記ガイド穴部は前記傾斜ラセン溝をもつ
傾斜底の開口側にシリンダ状の導入孔をもってもよい。
この導入孔を設ける場合は、先端に雄ねじや刃をもたな
い断面円形の部分をもつタップを用いる。本発明の雌ね
じ部材は、ナットのような機械部品でもよく、エンジン
ボデイのような機体でもよい。The guide hole has the inclined spiral groove.
A cylindrical introduction hole may be provided on the opening side of the inclined bottom.
When this introduction hole is provided, a tap having a circular section without a male screw or blade at the tip is used. The female screw member of the present invention may be a mechanical part such as a nut or a body such as an engine body.
【００１５】[0015]
【実施例】本発明の雌ねじ部材を具体的実施例により更
に説明する。図１は、雌ねじ部材に相当するナットを示
している。このナット１０のねじ穴部１１には、ねじ山
１２が谷の位置より径内方向に立上がる起立面１３に連
続してラセン状に形成され、起立面１３の直下の谷の位
置よりラセン溝１４が連続している。起立面１３が立上
がる谷の位置は、ガイド孔部１５の内径を決定し、かつ
ラセン溝１４の底と一致している。ガイド孔部１５の内
壁は、起立面１３から例えば右回りで漸次軸方向に長く
なり一周分にわたって形成されている。The female screw member of the present invention will be further described with reference to specific examples. FIG. 1 shows a nut corresponding to a female screw member. In the screw hole 11 of the nut 10, a screw thread 12 is formed in a helical shape continuously from an upright surface 13 that rises radially inward from the valley position, and a helical groove is formed from the valley position immediately below the upright surface 13. 14 are continuous. The position of the valley where the rising surface 13 rises determines the inner diameter of the guide hole 15 and coincides with the bottom of the spiral groove 14. The inner wall of the guide hole 15 gradually extends in the axial direction, for example, clockwise from the upright surface 13 and is formed for one round.
【００１６】上記構成のナット１０は、図２に示すよう
な加工前の粗材２０より形成する。粗材２０に予め形成
する下穴２１は、前記ガイド孔部１５と、該ガイド孔部
１５と同軸的に下側に延びるねじ形成用下穴部２２とか
らなり、ガイド孔部１５の底は、軸方向にラセン状に延
びかつ軸中心方向に傾斜した傾斜ラセン溝２３をもつ傾
斜底となっている。傾斜ラセン溝２３は、ほぼ一周形成
され、雌ねじ１ピッチ分の段差面２４をもつ。段差面２
４はその一部が前記起立面１３として残るものである。The nut 10 having the above-described structure is formed from a raw material 20 before processing as shown in FIG. The pilot hole 21 formed in advance in the rough material 20 is composed of the guide hole 15 and a screw forming pilot hole 22 extending coaxially downward with the guide hole 15. With a helical groove 23 extending helically in the axial direction and inclined in the axial center direction.
It has a sloping bottom . The inclined spiral groove 23 is formed substantially one round, and has a step surface 24 for one pitch of the female screw. Step surface 2
Reference numeral 4 denotes a part of which remains as the upright surface 13.
【００１７】上記粗材２０のガイド孔部１５だけは、金
型を押しつける鍛造によって形成しも、切削バイトによ
って形成しても、或いは特殊な方法で形成してもよい。
上記下穴２１をもつ粗材２０を転造タップによって雌ね
じを形成する過程を図３乃至図５を用いて説明する。た
だし、図３乃至図５では、ガイド孔部１５が軸方向に長
い場合、すなわち開口側にシリンダ状の導入孔３０をも
つ構成を例にして説明する。Only the guide hole 15 of the coarse material 20 may be formed by forging by pressing a mold, by a cutting tool, or by a special method.
The process of forming the internal thread of the rough material 20 having the prepared hole 21 by the rolling tap will be described with reference to FIGS. However, FIGS. 3 to 5 illustrate an example in which the guide hole 15 is long in the axial direction, that is, a configuration having a cylindrical introduction hole 30 on the opening side.
【００１８】転造タップ３１は、図３に示すように、雄
ねじの山の始まりがカットされた食いつき部３２を有す
る。食いつき部３２をこのような形状とする理由は強度
を向上するためである。転造タップ３１の山頂位置での
外径は、ガイド孔部１５に嵌合可能に設定されている。
転造タップ３１が導入孔３０を介してガイド孔部１５に
嵌合すると、転造タップ３１の先端のフランク３４が傾
斜ラセン溝２３の開口側に近い面に接触する。この場
合、フランク３４の傾斜角θ′は傾斜ラセン溝２３の傾
斜角θ（図５）とほぼ等しいので、例えば転造タップ３
１を回転させると、フランク３４と傾斜ラセン溝２３と
が安定に摺接し、この状態で転造タップ３１をほぼ最大
３６０°回転させる間に、食いつき部３２は傾斜ラセン
溝２３の段差面２４に確実に当接する。そして更に転造
タップ３１を回転させると、転造が行われ、図５に示す
ように、ラセン溝１４が段差面２４の下側より傾斜ラセ
ン溝２３に連続して形成されることになる。As shown in FIG. 3, the rolling tap 31 has a biting portion 32 in which the start of the thread of the external thread is cut. The reason why the biting portion 32 is formed in such a shape is to improve the strength. The outer diameter of the rolling tap 31 at the peak position is set so that it can be fitted into the guide hole 15.
When the rolling tap 31 is fitted into the guide hole 15 via the introduction hole 30, the flank 34 at the tip of the rolling tap 31 comes into contact with a surface near the opening side of the inclined spiral groove 23. In this case, since the inclination angle θ ′ of the flank 34 is substantially equal to the inclination angle θ (FIG. 5) of the inclined spiral groove 23, for example,
1 is rotated, the flank 34 and the inclined spiral groove 23 are in stable sliding contact with each other.
The contact surface surely contacts the step surface 24 of the groove 23. And when the further rotation of the rolling tap 31, rolling is performed, as shown in FIG. 5, so that the spiral groove 14 is formed continuously to the inclined spiral groove 23 from the lower side of the step surface 24.
【００１９】このように本実施例の雌ねじ部材では、製
造過程において、転造タップ３１の食いつき部３２が必
ず段差面２４に当接し、ラセン溝１４が必ず傾斜ラセン
溝２３に連続して形成される。この形状のねじ穴部１１
では、ねじの始り部分から正常なピッチの雌ねじとな
り、雄ねじを挿入した場合に、食込み不良を起こすこと
なく、確実に噛合うものである。As described above, in the female screw member of the present embodiment, in the manufacturing process, the biting portion 32 of the rolling tap 31 always comes into contact with the step surface 24, and the spiral groove 14 always has the inclined spiral.
It is formed continuously with the groove 23. Screw hole 11 of this shape
In this case, a female screw having a normal pitch is formed from the beginning of the screw, and when a male screw is inserted, the female screw is securely engaged without causing a biting defect.
【００２０】また、傾斜ラセン溝２３をほぼ３６０°形
成することにより、殆ど不完全ねじ部をもたない雌ねじ
となる。本発明の雌ねじ部材は、切削タップを用いても
製作することができる。この場合も、切削タップの先端
側の刃の面取り角度を傾斜ラセン溝２３の傾斜角度θに
合わせることにより、確実に切削タップの先端側の刃が
段差面２４に当接し、傾斜ラセン溝２３に連続するラセ
ン溝１４を形成することができる。Further, by forming the inclined spiral groove 23 at approximately 360 °, a female screw having almost no imperfect thread portion can be obtained. The female screw member of the present invention can also be manufactured using a cutting tap. Again, by matching the chamfer angle of the tip end of the blade of the cutting tap the inclination angle θ of the inclined spiral groove 23 ensures that the distal end side of the blade of the cutting tap is in contact with the stepped surface 24, the inclined spiral grooves 23 A continuous spiral groove 14 can be formed.
【００２１】なお、θは６０°前後であるが、勿論、こ
の値に限定するものではない。また、必ずしも形成する
ねじ山の角度に一致させる必要はない。また、傾斜ラセ
ン溝２３は雌ねじの１ピッチ分形成したが、１．５ピッ
チと１ピッチの間であればいずれでも、食いつき部は傾
斜ラセン溝２３にラセン溝１４が連続するように段差面
２４に当接する。Although θ is around 60 °, it is needless to say that the value is not limited to this value. It is not always necessary to match the angle of the thread to be formed. Further, the inclined spiral groove 23 is formed for one pitch of the female screw. However, in any case between 1.5 pitches and 1 pitch, the biting portion has a step surface 24 such that the spiral groove 14 is continuous with the inclined spiral groove 23. Abut.
【００２２】[0022]
【発明の効果】以上述べたように本発明によれば、粗材
の状態で予め形成された傾斜底の傾斜ラセン溝が形成し
ようとする雌ねじのリードに一致し、該傾斜ラセン溝に
連続してラセン溝が形成されるので、不完全ねじ部が殆
ど生じず、雄ねじを常に正常に噛合わせることができ、
食い込み不良の発生を軽減して生産性の向上に寄与す
る。As described above, according to the present invention, in the state of the coarse material, the inclined spiral groove of the inclined bottom formed in advance matches the lead of the female screw to be formed, and is continuous with the inclined spiral groove. Since the spiral groove is formed, almost no incomplete screw portion occurs, and the male screw can always be normally engaged.
This reduces the occurrence of biting defects and contributes to improving productivity.
【図１】 本発明の一実施例に係る雌ねじ部材を示す斜
視図である。FIG. 1 is a perspective view showing a female screw member according to one embodiment of the present invention.
【図２】 上記雌ねじ部材を形成する前の粗材を示す斜
視図である。FIG. 2 is a perspective view showing a rough material before forming the female screw member.
【図３】 本発明の雌ねじ部材を転造により製造する場
合のタップを示す図である。FIG. 3 is a diagram showing taps when the female screw member of the present invention is manufactured by rolling.
【図４】 上記雌ねじ部材の製造において転造前の粗材
を示す断面図である。FIG. 4 is a cross-sectional view showing a rough material before rolling in the production of the female screw member.
【図５】 上記雌ねじ部材の転造後の形状を示す断面図
である。FIG. 5 is a cross-sectional view showing a shape after rolling of the female screw member.
【図６】 従来の雌ねじ部材の製造において転造前の粗
材を示す断面図である。FIG. 6 is a cross-sectional view showing a rough material before rolling in manufacturing a conventional female screw member.
【図７】 上記従来の雌ねじ部材の転造後の形状を示す
断面図である。FIG. 7 is a cross-sectional view showing a shape after rolling of the conventional female screw member.
１０はナット（雌ねじ部材）、１１はねじ穴部、１２は
ねじ山、１３は起立面、１４はラセン溝、１５はガイド
孔部、２０は粗材、２１は下穴、２２はねじ形成用下穴
部、２３は傾斜斜ラセン溝、２４は段差面、３１は転造
タップである。10 is a nut (female screw member), 11 is a screw hole, 12 is a screw thread, 13 is an upright surface, 14 is a spiral groove, 15 is a guide hole, 20 is a coarse material, 21 is a pilot hole, and 22 is a screw formation. A pilot hole, 23 is an inclined oblique spiral groove , 24 is a step surface, and 31 is a rolling tap.
Claims (7)
部と該ガイド孔部と同軸的に該開口と遠ざかる方向に延
びるねじ穴部とからなるねじ穴をもつ雌ねじ部材であっ
て、 該ガイド孔部の底は軸方向にラセン状に延びかつ軸中心
方向に傾斜した傾斜ラセン溝をもつ傾斜底となり、 該傾斜ラセン溝は該ねじ穴部のラセン溝に連続している
ことを特徴とする雌ねじ部材。1. A female screw member having a screw hole comprising a large-diameter guide hole located on an opening side and a screw hole extending coaxially with the guide hole in a direction away from the opening. bottom of the hole portion is an inclined bottom with inclined spiral grooves inclined axially extending and axially center direction in a spiral, the inclined spiral grooves, characterized in that in succession spiral groove of the screw hole Female screw member.
よって形成されたものである請求項１記載の雌ねじ部
材。2. The female screw member according to claim 1, wherein the inclined bottom having the inclined spiral groove is formed by forging.
されたものである請求項１記載の雌ねじ部材。3. The female screw member according to claim 1, wherein said screw hole is formed by a rolling tap.
されたものである請求項１記載の雌ねじ部材。4. The female screw member according to claim 1, wherein said screw hole is formed by a cutting tap.
つ傾斜底の開口側にシリンダ状の導入孔をもつ請求項１
記載の雌ねじ部材。5. The guide hole portion also has the inclined spiral groove.
2. A cylinder-shaped introduction hole on the opening side of the inclined bottom.
The internal thread member as described in the above.
る。6. The female screw member according to claim 1, wherein the female screw member is a nut.
の機械部品である。7. The female screw member according to claim 1, which is a mechanical part other than the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35075796A JP3284069B2 (en) | 1996-12-27 | 1996-12-27 | Female thread member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35075796A JP3284069B2 (en) | 1996-12-27 | 1996-12-27 | Female thread member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10184642A JPH10184642A (en) | 1998-07-14 |
| JP3284069B2 true JP3284069B2 (en) | 2002-05-20 |
Family
ID=18412664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35075796A Expired - Fee Related JP3284069B2 (en) | 1996-12-27 | 1996-12-27 | Female thread member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3284069B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3677402B2 (en) * | 1998-11-12 | 2005-08-03 | 株式会社杉浦製作所 | Manufacturing method of male screw member |
| JP3737001B2 (en) * | 1999-09-30 | 2006-01-18 | 株式会社杉浦製作所 | Screwing unit of female screw member and male screw member |
| JP3676630B2 (en) * | 1999-09-24 | 2005-07-27 | 株式会社杉浦製作所 | nut |
| JP2007187305A (en) * | 2005-12-14 | 2007-07-26 | Ricoh Co Ltd | Prepared hole shape for tapping screws |
| KR102306148B1 (en) * | 2021-03-18 | 2021-09-28 | 주식회사 동화특수강 | Fire-fighting radiation gutters |
-
1996
- 1996-12-27 JP JP35075796A patent/JP3284069B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10184642A (en) | 1998-07-14 |
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