JPH10331035A - Rotor for open-end spinning machine - Google Patents
Rotor for open-end spinning machineInfo
- Publication number
- JPH10331035A JPH10331035A JP14062397A JP14062397A JPH10331035A JP H10331035 A JPH10331035 A JP H10331035A JP 14062397 A JP14062397 A JP 14062397A JP 14062397 A JP14062397 A JP 14062397A JP H10331035 A JPH10331035 A JP H10331035A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- rotor
- yarn
- cylindrical body
- groove
- 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.)
- Granted
Links
Landscapes
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、短繊維群を集束し
つつ連続的に加撚して撚り糸を形成するために使用する
オープンエンド精紡機用ロータに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor for an open-end spinning machine used to form a twisted yarn by continuously twisting a group of short fibers while bundling them.
【０００２】[0002]
【従来の技術】従来、オープンエンド精紡機は、例え
ば、図８に示すような紡糸ユニット１４の供給口１１に
投入したスライバ２０を、紡糸ユニット１４内で回転す
るコーミングローラ１２へ輸送し、該コーミングローラ
１２の外周に備える鋸状刃１２ａで上記スライバ２０を
開繊して短繊維群２１としたあと、該短繊維群２１を輸
送孔１３を介して負圧室１６に導き、該負圧室１６内で
高速回転するロータ１０の紡糸室２に供給するようにな
っていた。2. Description of the Related Art Conventionally, an open-end spinning machine transports a sliver 20 inserted into a supply port 11 of a spinning unit 14 as shown in FIG. 8 to a combing roller 12 rotating in the spinning unit 14, for example. After the sliver 20 is opened by the saw blade 12a provided on the outer periphery of the combing roller 12 to form the short fiber group 21, the short fiber group 21 is guided to the negative pressure chamber 16 through the transport hole 13, and the negative pressure The spinning chamber 2 of the rotor 10 rotating at a high speed in the chamber 16 was supplied.
【０００３】そして、上記ロータ１０の紡糸室２に供給
された短繊維群２１は、旋回気流にのって紡糸室２の繊
維収束溝５に集束されつつ連続的に加撚されて一本の撚
り糸２２となり、該撚り糸２２はロータ１０の開口部に
配設された糸導出孔１５より引き出されるようになって
いた。[0003] The short fiber group 21 supplied to the spinning chamber 2 of the rotor 10 is continuously twisted while being bundled in the fiber converging groove 5 of the spinning chamber 2 by a swirling airflow to form a single strand. The twisted yarn 22 was drawn out from the yarn outlet 15 provided in the opening of the rotor 10.
【０００４】また、短繊維群２１から撚り糸２２を形成
するロータ１０は、テーパ状をした上下内壁面３，４
と、該内壁面３，４同士の交差部近傍に形成された繊維
収束溝５と、底面６とからなる紡糸室２を備えた有底筒
状体１と、該有底筒状体１の底部に接合された回転軸８
とからなり、上記有底筒状体１は比重の小さいアルミニ
ウム合金等の金属により形成したものが使用されてい
た。[0004] The rotor 10 for forming the twisted yarn 22 from the short fiber group 21 has tapered upper and lower inner wall surfaces 3, 4.
And a bottomed cylindrical body 1 having a spinning chamber 2 comprising a fiber converging groove 5 formed near the intersection of the inner wall surfaces 3 and 4 and a bottom surface 6. Rotary shaft 8 joined to the bottom
The bottomed cylindrical body 1 is made of a metal having a small specific gravity, such as an aluminum alloy.
【０００５】しかしながら、近年、糸の生産速度の向上
に伴ってロータ１０の回転速度をさらに高速化しなけれ
ばならず、その結果、従来の金属製ロータ１０では、短
繊維群２１や短繊維群２１とともに投入される葉かすや
実かす、あるいは空気中の砂やホコリといったゴミとの
衝突が激しくなるために、紡糸室２の上下内壁面３，４
や繊維収束溝５が大きく摩耗し、糸品質を大きく低下さ
せてしまうことから短期間の使用で交換しなければなら
ないといった課題があった。However, in recent years, the rotational speed of the rotor 10 has to be further increased in accordance with the improvement of the yarn production speed. As a result, in the conventional metal rotor 10, the short fiber group 21 and the short fiber group 21 The inner and outer walls 3 and 4 of the spinning chamber 2 are intensely collided with garbage such as leaf scum and seeds, or sand and dust in the air.
There is a problem that the fiber converging groove 5 is greatly worn and the yarn quality is greatly reduced, so that the fiber must be replaced after a short use.
【０００６】しかも、従来、３万r.p.m 程度であったロ
ータ１０の回転速度は、８万r.p.m以上の回転速度が要
求されており、このような回転速度でアルミニウム合金
製のロータ１０を高速回転させると回転に伴う応力に耐
えられずロータ１０の有底筒状体１（特に薄肉の開口付
近）が変形するといった課題があった。In addition, the rotation speed of the rotor 10, which has conventionally been about 30,000 rpm, is required to be 80,000 rpm or more. At such a rotation speed, the aluminum alloy rotor 10 is rotated at a high speed. However, there is a problem that the bottomed cylindrical body 1 of the rotor 10 (especially in the vicinity of a thin opening) is deformed and cannot withstand the stress caused by rotation.
【０００７】そこで、ロータ１０を構成する有底筒状体
１の耐摩耗性及び強度を向上させるために、アルミナ、
炭化珪素、窒化珪素、ジルコニア等のセラミックスによ
り形成することが提案されている（特開昭６０−１４６
０２０号公報参照）。Therefore, in order to improve the wear resistance and strength of the bottomed tubular body 1 constituting the rotor 10, alumina,
It has been proposed to be formed from ceramics such as silicon carbide, silicon nitride, zirconia (Japanese Patent Application Laid-Open No. 60-146).
No. 020).
【０００８】[0008]
【発明が解決しようとする課題】ところが、上記セラミ
ック製の有底筒状体１を有するロータ１０において、撚
り糸２２を形成するのに重要な繊維集束溝５の表面状態
については充分な検討がされておらず、糸品質が低下し
たり、糸切れにより稼働効率を高めることができないと
いった課題があった。However, in the rotor 10 having the ceramic bottomed tubular body 1 described above, the surface condition of the fiber focusing groove 5 important for forming the twisted yarn 22 has been sufficiently studied. Therefore, there was a problem that the yarn quality was lowered, and the operating efficiency could not be increased due to yarn breakage.
【０００９】即ち、繊維集束溝５の上面における面状態
が粗すぎると、紡糸室２の上部内壁面３からの短繊維群
２１の供給や短繊維群２１の加撚作用に悪影響を与え、
撚り糸２２に糸玉ができたり、糸径が変化するなどして
糸品質が低下するとともに、繊維集束溝５の上面に鋭利
なエッジがあると、撚り糸２２が傷付けられ、糸切れが
発生していた。That is, if the surface condition of the upper surface of the fiber focusing groove 5 is too rough, the supply of the short fiber group 21 from the upper inner wall surface 3 of the spinning chamber 2 and the twisting action of the short fiber group 21 are adversely affected.
The yarn quality is degraded due to the formation of a ball on the twisted yarn 22 or a change in the yarn diameter, and if there is a sharp edge on the upper surface of the fiber focusing groove 5, the twisted yarn 22 is damaged and the yarn breaks. Was.
【００１０】また、短繊維群２１とともに投入されたゴ
ミは一旦繊維収束溝５に保持したあと、撚り糸２２中に
混入させて取り除くようになっているが、ゴミを定期的
に撚り糸２２中に混入させて除去することが難しく、そ
の結果、不規則な糸むらができることから糸品質が低下
するとともに、繊維収束溝５の詰まりを招き、糸切れを
発生させるといった恐れがあった。Further, the dust introduced together with the short fiber group 21 is temporarily retained in the fiber converging groove 5 and then mixed into the twisted yarn 22 to be removed. However, it is difficult to remove the yarn, and as a result, irregular yarn unevenness is generated, thereby lowering the yarn quality and causing clogging of the fiber convergence groove 5, which may cause yarn breakage.
【００１１】さらに、セラミックスは脆性材料であるこ
とから、繊維収束溝５の上面と紡糸室２の上部内壁面３
との稜部が鋭利であると、短繊維群２１や該短繊維群２
１とともに投入されたゴミとの衝突により脱粒やチッピ
ングを生じるため、予め面取りを施す必要があるが、こ
の面取り量が多いと繊維収束溝５に過剰の短繊維群２１
が供給されることになり、撚り糸２２に糸玉ができた
り、不規則な糸むらができ、糸品質を低下させたり、糸
切れの原因となる恐れもあった。Further, since ceramic is a brittle material, the upper surface of the fiber converging groove 5 and the upper inner wall surface 3 of the spinning chamber 2 are formed.
And the short fiber group 21 or the short fiber group 2
In this case, it is necessary to be chamfered in advance because the particles collide with the refuse supplied together with the dust 1, causing grain shattering and chipping.
Is supplied, and yarn balls are formed on the twisted yarn 22, irregular yarn unevenness is generated, and there is a possibility that the yarn quality is reduced or the yarn is broken.
【００１２】[0012]
【課題を解決するための手段】そこで、本発明は上記課
題に鑑み、請求項１に係る発明として、短繊維群の投入
と撚り糸の取り出しのための開口を有する紡糸室を備
え、該紡糸室の内壁面に短繊維群を加撚して撚り糸を形
成するための繊維収束溝を備えてなるセラミック製の有
底筒状体と、該有底筒状体の底部に接合した回転軸とか
らなるオープンエンド精紡機用ロータにおいて、上記繊
維収束溝の上面における断面曲線の最大部と最小部との
差を１０μｍ以下とするとともに、上記繊維収束溝の上
面と紡糸室の内壁面との稜部にＲ０．３ｍｍ以下の面取
りを施したことを特徴とするものである。SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a spinning chamber having an opening for feeding a group of short fibers and taking out a twisted yarn. A cylindrical bottomed body made of ceramic having a fiber converging groove for twisting a short fiber group on the inner wall surface to form a twisted yarn, and a rotating shaft joined to the bottom of the bottomed cylindrical body. In the rotor for an open-end spinning machine, the difference between the maximum part and the minimum part of the cross-sectional curve on the upper surface of the fiber convergence groove is 10 μm or less, and the ridge between the upper surface of the fiber convergence groove and the inner wall surface of the spinning chamber. Is chamfered to R 0.3 mm or less.
【００１３】また、請求項２に係る発明として、短繊維
群の投入と撚り糸の取り出しのための開口を有する紡糸
室を備え、該紡糸室の内壁面に短繊維群を加撚して撚り
糸を形成するための繊維収束溝を備えてなるセラミック
製の有底筒状体と、該有底筒状体の底部に接合した回転
軸とからなるオープンエンド精紡機用ロータにおいて、
上記繊維収束溝の下面に、螺旋状のうねりを形成したこ
とを特徴とするものである。According to a second aspect of the present invention, there is provided a spinning chamber having an opening for introducing a short fiber group and taking out a twisted yarn, and twists the short fiber group on the inner wall surface of the spinning chamber to form a twisted yarn. In a rotor for an open-end spinning machine including a ceramic bottomed cylindrical body having a fiber converging groove for forming, and a rotating shaft joined to the bottom of the bottomed cylindrical body,
A spiral undulation is formed on the lower surface of the fiber converging groove.
【００１４】[0014]
【発明の実施の形態】以下、発明の実施形態について説
明する。Embodiments of the present invention will be described below.
【００１５】図１は本発明に係るオープンエンド精紡機
用ロータ１の一部を破断した正面図であり、図２は図１
のＡ部を拡大した断面図である。FIG. 1 is a partially cutaway front view of a rotor 1 for an open-end spinning machine according to the present invention, and FIG.
It is sectional drawing which expanded the A section of FIG.
【００１６】このオープンエンド精紡機用ロータ１０
（以下、ロータと称す。）は、内孔を紡糸室２としたセ
ラミック製の有底筒状体１と、該有底筒状体１の底部に
接合した金属製の回転軸８とからなり、両者は有底筒状
体１の底部に設けたボス７に、回転軸８のフランジ部８
ａをロウ材を用いて焼き嵌めにて接合してある。The rotor 10 for an open-end spinning machine
(Hereinafter, referred to as a rotor) comprises a ceramic bottomed cylindrical body 1 having an inner hole as a spinning chamber 2, and a metal rotating shaft 8 joined to the bottom of the bottomed cylindrical body 1. And a boss 7 provided on the bottom of the bottomed cylindrical body 1 and a flange 8 of a rotating shaft 8.
a was joined by shrink fitting using a brazing material.
【００１７】また、上記有底筒状体１の紡糸室２は、テ
ーパ状をした上下内壁面３，４と、該上下内壁面３，４
同士の交差部近傍に形成した繊維収束溝５、および底面
６とからなり、高速度で回転する有底筒状体１の紡糸室
２に短繊維群２１が供給されると、回転に伴う旋回気流
により上部内壁面３に沿って繊維収束溝５へ供給、収束
させ、繊維収束溝５の開口部近傍における加撚作用によ
り撚り糸２２を形成するとともに、短繊維群２１ととも
に投入された葉かす、実かす、砂、ホコリといったゴミ
２３は短繊維群２１と分離され、繊維収束溝５内に一旦
保持されるようになっている。The spinning chamber 2 of the bottomed cylindrical body 1 has upper and lower inner wall surfaces 3 and 4 which are tapered.
When the short fiber group 21 is supplied to the spinning chamber 2 of the bottomed tubular body 1 that is composed of the fiber converging groove 5 and the bottom surface 6 formed near the intersection of the two and rotates at a high speed, the rotation associated with the rotation is performed. It is supplied and converged to the fiber convergence groove 5 along the upper inner wall surface 3 by the air flow, and the twisted yarn 22 is formed by the twisting action near the opening of the fiber convergence groove 5, and the leaf residue injected together with the short fiber group 21. Dust 23 such as sand, dust, and dust are separated from the short fiber group 21 and temporarily held in the fiber converging groove 5.
【００１８】このように、本発明は撚り糸２２を形成す
るのに重要な有底筒状体１を、高強度を有し、耐摩耗性
に優れるセラミックスで形成してあることから、短繊維
群２１やゴミ２３との衝突や摺動の繰り返しにおいて
も、紡糸室２を構成する上下内壁面３，４や繊維収束溝
５の摩耗を抑えることができるため、長期間にわたって
品質の良い糸を安定して供給することができる。しか
も、セラミックスは金属に比べ比重が小さいことから、
小さな回転トルクで高速回転させることができ、高速化
に対応したロータ１０とすることができる。As described above, according to the present invention, since the bottomed cylindrical body 1 important for forming the twisted yarn 22 is formed of ceramics having high strength and excellent wear resistance, the short fiber group Even in the case of repeated collision and sliding with the dust 21 and the dust 23, the wear of the upper and lower inner wall surfaces 3, 4 and the fiber convergence groove 5 constituting the spinning chamber 2 can be suppressed, so that a high-quality yarn can be stably maintained for a long period of time. Can be supplied. Moreover, since ceramics have a lower specific gravity than metals,
The rotor 10 can be rotated at a high speed with a small rotation torque, and the rotor 10 can cope with a high speed.
【００１９】また、品質の良い糸を得るためには、撚り
糸２２を形成する繊維収束溝５の上面５ａにおける断面
曲線の最大部と最小部の差を１０μｍ以下とすることが
重要である。即ち、断面曲線の最大部と最小部の差が１
０μｍより大きくなると、紡糸室２の上部内壁面３から
の短繊維群２１の供給や短繊維群２１の加撚作用に悪影
響を与え、撚り糸２２に不規則な糸むらができたり、糸
径が変化するなどして糸品質が大きく低下するととも
に、糸切れを生じ易くなるからである。In order to obtain a high-quality yarn, it is important that the difference between the maximum part and the minimum part of the cross-sectional curve on the upper surface 5a of the fiber converging groove 5 forming the twisted yarn 22 is 10 μm or less. That is, the difference between the maximum part and the minimum part of the sectional curve is 1
When the diameter is larger than 0 μm, the supply of the short fiber group 21 from the upper inner wall surface 3 of the spinning chamber 2 and the twisting action of the short fiber group 21 are adversely affected, so that the twisted yarn 22 may have irregular yarn unevenness or a reduced yarn diameter. This is because the quality of the yarn is greatly reduced due to a change or the like, and the yarn is easily broken.
【００２０】また、繊維収束溝５の上面５ａは焼き放し
面とすることが望ましい。即ち、繊維収束溝５の上面５
ａに研削加工を施すと、その表面に鋭利なエッジができ
る恐れがあり、繊維収束溝５の開口部近傍で加撚される
撚り糸２２を引っ掻いて糸に傷を付けて糸品質を低下さ
せたり、糸切れを生じる恐れがあるからであり、焼き放
し面とすれば、その表面には鋭利なエッジが殆どないこ
とから、引っ掻きによる糸切れや糸品質の低下を防ぐこ
とができる。なお、繊維収束溝５の上面５ａを上記表面
状態とできれば、研削加工を施したものでも良い。Further, it is desirable that the upper surface 5a of the fiber converging groove 5 is a burned surface. That is, the upper surface 5 of the fiber focusing groove 5
When a grinding process is performed on a, a sharp edge may be formed on the surface thereof, and the twisted yarn 22 twisted near the opening of the fiber converging groove 5 may be scratched to damage the yarn, thereby deteriorating the yarn quality. This is because there is a risk of thread breakage, and if the surface is an annealed surface, there is almost no sharp edge on the surface, so that it is possible to prevent thread breakage and deterioration in yarn quality due to scratching. If the upper surface 5a of the fiber converging groove 5 can have the above-mentioned surface state, it may be subjected to grinding.
【００２１】また、紡糸室２の上部内壁面３と繊維収束
溝５の上面５ａとの稜部には、短繊維群２１やゴミ２３
との衝突による脱粒やチッピングを防ぐために曲面状の
面取り部５ｃを設ける必要があるが、その面取り量がＲ
０．３ｍｍより多くなると、過剰の短繊維群２１が繊維
収束溝５に案内されることになり、撚り糸２２に糸玉や
不規則な糸むらができ、糸品質を低下させる原因とな
る。A short fiber group 21 and dust 23 are located on the ridge between the upper inner wall surface 3 of the spinning chamber 2 and the upper surface 5a of the fiber converging groove 5.
It is necessary to provide a curved chamfered portion 5c in order to prevent shedding or chipping due to collision with
If it is more than 0.3 mm, the excess short fiber group 21 will be guided to the fiber converging groove 5, and a yarn ball or irregular yarn unevenness will be formed on the twisted yarn 22, which will cause a decrease in yarn quality.
【００２２】その為、紡糸室２の上部内壁面３と繊維収
束溝５の上面５ａとの稜部には、Ｒ０．３ｍｍ以下の曲
面状をした面取り部５ｃを形成することが必要である。Therefore, it is necessary to form a chamfered portion 5c having a curved shape of 0.3 mm or less at the ridge between the upper inner wall surface 3 of the spinning chamber 2 and the upper surface 5a of the fiber focusing groove 5.
【００２３】一方、図３に繊維収束溝５を拡大した斜視
図を示すように、繊維収束溝５の下面５ｂには螺旋状の
うねり５１を形成することが重要である。On the other hand, as shown in an enlarged perspective view of the fiber focusing groove 5 in FIG. 3, it is important to form a spiral undulation 51 on the lower surface 5b of the fiber focusing groove 5.
【００２４】即ち、短繊維群２１とともに投入されたゴ
ミ２３は一旦繊維収束溝５に保持したあと、詰まりを防
ぐために撚り糸２２に混入させて除去する必要がある
が、繊維収束溝５の下面５ｂに螺旋状のうねり５１を設
けることで繊維収束溝５中のゴミ２３を撚り糸２２中へ
定期的に混入させることができるため、不規則な糸むら
のない品質の良い糸を形成することができるとともに、
繊維収束溝５内にゴミが蓄積することによる糸切れを防
ぐことができる。しかも、繊維収束溝５の上面５ａと同
様に、焼き放し面とすれば鋭利なエッジが殆どなく、引
っ掻きによる糸切れや糸品質の低下を防ぐことができ
る。That is, the dust 23 introduced together with the short fiber group 21 needs to be once held in the fiber converging groove 5 and then mixed and removed with the twisted yarn 22 in order to prevent clogging. By providing the spiral undulations 51 in the ridges, the dust 23 in the fiber converging groove 5 can be periodically mixed into the twisted yarns 22, so that a high quality yarn without irregular yarn unevenness can be formed. With
Thread breakage due to accumulation of dust in the fiber focusing groove 5 can be prevented. Moreover, similar to the upper surface 5a of the fiber converging groove 5, if the surface is an annealed surface, there are almost no sharp edges, so that yarn breakage due to scratching and deterioration in yarn quality can be prevented.
【００２５】ただし、繊維収束溝５の下面５ｂにおい
て、うねり５１を含む断面曲線の最大部と最小部の差が
２μｍより小さいと、繊維収束溝５中のゴミ２３を撚り
糸２２へ連続的に案内することが難しくなるため、繊維
収束溝５の下面５ｂは、うねり５１を含む断面曲線の最
大部と最小部の差が２μｍ以上であることが良い。However, if the difference between the maximum part and the minimum part of the cross-sectional curve including the waviness 51 is smaller than 2 μm on the lower surface 5b of the fiber focusing groove 5, the dust 23 in the fiber focusing groove 5 is continuously guided to the twisted yarn 22. Therefore, the difference between the maximum part and the minimum part of the cross-sectional curve including the waviness 51 is preferably 2 μm or more on the lower surface 5 b of the fiber converging groove 5.
【００２６】なお、本発明において、うねり５１とは周
期的な凹凸を有し、この周期的な凸部を０．５ｍｍ当た
りに２個以上有することを言う。In the present invention, the undulations 51 have periodic irregularities, and have two or more periodic projections per 0.5 mm.
【００２７】また、断面曲線の最大部と最小部の差と
は、有底筒状体１を水平に切断または除去して繊維収束
溝５の上面５ａおよび／または下面５ｂを露出させ、表
面粗さ計にてフィルターを通さず、かつカットオフする
ことなく表面を直径方向にトレースさせた時の断面曲線
を作図し、その最大部と最小部の差のことである。The difference between the maximum part and the minimum part of the sectional curve is determined by cutting or removing the bottomed cylindrical body 1 horizontally to expose the upper surface 5a and / or the lower surface 5b of the fiber converging groove 5, and A cross-sectional curve is drawn when the surface is traced in the diametric direction without passing through a filter and without cutting off with a sag meter, and the difference between the maximum part and the minimum part.
【００２８】また、上部内壁面３の表面粗さが中心線平
均粗さ（Ｒａ）で１μｍより大きくなると、上部内壁面
３に沿って投入された短繊維群２１を繊維収束溝５へ定
期的に供給することができないため、撚り糸２２に不規
則な糸むらができたり、糸径が変化するなどして糸品質
が低下する。When the surface roughness of the upper inner wall surface 3 is larger than 1 μm in center line average roughness (Ra), the short fiber group 21 injected along the upper inner wall surface 3 is periodically transferred to the fiber converging groove 5. The yarn quality is degraded due to irregular yarn unevenness in the twisted yarn 22 and a change in the yarn diameter.
【００２９】従って、上記繊維収束溝５へ連続的に短繊
維群２１を投入するためには、上部内壁面３の表面粗さ
を中心線平均粗さ（Ｒａ）１μｍ以下の滑らかな面とす
ることが良い。Therefore, in order to continuously feed the short fiber group 21 into the fiber converging groove 5, the surface roughness of the upper inner wall surface 3 should be a smooth surface having a center line average roughness (Ra) of 1 μm or less. Good.
【００３０】ところで、このような有底筒状体１を構成
するセラミックスとしては、アルミナ、ジルコニア、炭
化珪素、窒化珪素等を主体とする、曲げ強度３０ｋｇ／
ｍｍ2 以上、破壊靱性値（Ｋ1c）３ＭＰａｍ1/2 以上の
セラミックスにより形成することが望ましく、上記セラ
ミックスからなる有底筒状体１を用いれば、８万r.p.m
程度の高速回転でも使用することができる。The ceramics constituting the bottomed tubular body 1 are mainly composed of alumina, zirconia, silicon carbide, silicon nitride, etc., and have a bending strength of 30 kg / cm.
mm 2 or more and a ceramic with a fracture toughness (K 1c ) of 3 MPam 1/2 or more. If the bottomed cylindrical body 1 made of the above ceramics is used, 80,000 rpm
It can be used even at high rotation speeds.
【００３１】特に、窒化珪素を主体とするセラミックス
は、耐摩耗性に優れるとともに、曲げ強度１４５０ｋｇ
／ｍｍ2 以上、破壊靱性値（Ｋ1c）５．７ＭＰａｍ1/2
以上を有し、かつ比重が３．０〜３．３と小さいため、
高速化に対応したロータ１０を構成するのに好適であ
り、その中でもＳｉ3 Ｎ4 を９０〜９６重量％に対し、
Ｙ2 Ｏ3 、Ｙｂ2 Ｏ3 など希土類酸化物を２〜５重量％
の範囲で含有するとともに、Ａｌ2 Ｏ3 を２〜５重量％
の範囲で含有してなり、平均結晶粒子径が０．１〜１０
μｍで、かつアスペクト比３以上の窒化珪素粒子を６０
％以上、好ましくは７５％以上含む窒化珪素質セラミッ
クスにより形成すれば、曲げ強度６０ｋｇ／ｍｍ2 以
上、破壊靱性値（Ｋ1c）６ＭＰａｍ1/2 以上と高強度、
高靱性を有することから１０万r.p.m 以上の高速回転で
の使用が可能で最適である。In particular, ceramics mainly composed of silicon nitride have excellent wear resistance and a bending strength of 1450 kg.
/ Mm 2 or more, fracture toughness (K 1c ) 5.7 MPam 1/2
Since it has the above and the specific gravity is as small as 3.0 to 3.3,
It is suitable for constructing the rotor 10 corresponding to high speed. Among them, Si 3 N 4 is 90 to 96% by weight.
Y 2 O 3, Yb 2 O 3 , etc. The rare earth oxide 2-5 wt%
And 2 to 5% by weight of Al 2 O 3
And the average crystal particle diameter is 0.1 to 10
60 μm silicon nitride particles having an aspect ratio of 3 or more
% Or more, preferably 75% or more, and a high strength such as a bending strength of 60 kg / mm 2 or more and a fracture toughness (K 1c ) of 6 MPam 1/2 or more.
Since it has high toughness, it can be used at high speeds of 100,000 rpm or more and is optimal.
【００３２】一方、このような図１に示すロータ１０を
製作するには、アルミナ、ジルコニア、炭化珪素、窒化
珪素等のセラミック原料に、各種助剤を所定の範囲内で
含有させたあと、バインダーと溶媒を加えて泥漿を作製
し、該泥漿を型内に充填して鋳込成形法、射出成形法等
の公知のセラミック成形法により成形したあと、得られ
た成形体に切削加工を施して図１に示すような形状の有
底筒状体１を作製する。On the other hand, in order to manufacture the rotor 10 shown in FIG. 1, various auxiliary agents are added to a ceramic raw material such as alumina, zirconia, silicon carbide, silicon nitride or the like within a predetermined range, and then a binder is prepared. And a solvent are added to produce a slurry, and the slurry is filled into a mold and molded by a known ceramic molding method such as a casting method or an injection molding method, and then the obtained molded body is subjected to cutting. A bottomed cylindrical body 1 having a shape as shown in FIG. 1 is manufactured.
【００３３】この時、繊維収束溝５の上面５ａには、切
削加工を施して断面曲線の最大部と最小部の差が１０μ
ｍ以下となるように加工するとともに、繊維収束溝５の
下面５ｂにも切削加工を施して、断面曲線の最大部と最
小部の差が２μｍ以上で、かつ０．５ｍｍ当たりに２個
以上の凸部を有する螺旋状の加工傷を形成する。At this time, the upper surface 5a of the fiber converging groove 5 is subjected to a cutting process so that the difference between the maximum and the minimum of the sectional curve is 10 μm.
m, and the lower surface 5b of the fiber converging groove 5 is also cut so that the difference between the maximum part and the minimum part of the cross-sectional curve is 2 μm or more and two or more pieces per 0.5 mm. A spiral processing flaw having a convex portion is formed.
【００３４】しかるのち、成形体を脱脂したあと、各種
セラミックスを焼結させることができる温度にて焼成す
れば、繊維収束溝５の上面５ａを、断面曲線の最大部と
最小部との差が１０μｍ以下である焼き放し面とするこ
とができるとともに、繊維収束溝５の下面５ｂを、断面
曲線の最大部と最小部との差が２μｍ以上である螺旋状
のうねり５１を備えた焼き放し面とすることができる。Thereafter, if the molded body is degreased and then fired at a temperature at which various ceramics can be sintered, the upper surface 5a of the fiber converging groove 5 has a difference between the maximum part and the minimum part of the sectional curve. The burned-out surface having a diameter of 10 μm or less can be used, and the lower surface 5 b of the fiber converging groove 5 can be a burned-out surface provided with a spiral waviness 51 having a difference between a maximum portion and a minimum portion of a sectional curve of 2 μm or more. It can be.
【００３５】次に、焼成した有底筒状体１の繊維収束溝
５を除く上下内壁面３，４に研削加工を施して中心線平
均粗さ（Ｒａ）１μｍ以下とするとともに、紡糸室２の
上部内壁面３と繊維収束溝５の上面５ａとの稜部にＲ
０．３ｍｍ以下の面取り部５ｃを形成することにより、
セラミック製の有底筒状体１を製作する。Next, the upper and lower inner wall surfaces 3 and 4 of the calcined bottomed cylindrical body 1 except for the fiber converging groove 5 are subjected to grinding so as to have a center line average roughness (Ra) of 1 μm or less and a spinning chamber 2. The ridge between the upper inner wall surface 3 and the upper surface 5a of the fiber focusing groove 5
By forming the chamfered portion 5c of 0.3 mm or less,
A bottomed cylindrical body 1 made of ceramic is manufactured.
【００３６】そして、回転軸８のフランジ部８ａに上記
有底筒状体１のボス７をロウ材を用いて焼嵌めすること
により図１に示す本発明のロータ１０を製作することが
できる。Then, the rotor 10 of the present invention shown in FIG. 1 can be manufactured by shrink-fitting the boss 7 of the bottomed cylindrical body 1 to the flange portion 8a of the rotating shaft 8 using a brazing material.
【００３７】なお、有底筒状体の形状としては、図１に
示したものだけに限定されるものではなく、例えば、図
４に示すようなテーパ状をした上部内壁面３３と底面３
４、および上部内壁面３３と底面３４との交差部近傍に
形成された繊維収束溝３５とからなる紡糸室３２を有す
る有底筒状体３１など、さまざまな形状の有底筒状体を
備えたロータに適用できるものである。The shape of the bottomed cylindrical body is not limited to that shown in FIG. 1, but may be, for example, a tapered upper inner wall surface 33 and a bottom surface 3 shown in FIG.
4, and a bottomed tubular body having various shapes such as a bottomed tubular body 31 having a spinning chamber 32 composed of a fiber converging groove 35 formed near the intersection of the upper inner wall surface 33 and the bottom surface 34. The present invention can be applied to a rotor that has been used.
【００３８】（実施例１）図１に示すロータ１０を用意
し、繊維収束溝５の上面５ａを焼き放し面とし、断面曲
線の最大部と最小部の差をそれぞれ変化させたものをそ
れぞれ４個ずつ試作し、稼働効率について実験を行っ
た。Example 1 A rotor 10 shown in FIG. 1 was prepared, the upper surface 5a of the fiber converging groove 5 was used as a burned-out surface, and the difference between the maximum part and the minimum part of the cross-sectional curve was changed. Trials were manufactured one by one and experiments were conducted on the operating efficiency.
【００３９】本実験ではロータ１０を構成する有底筒状
体１を、窒化珪素質セラミックスにより形成し、クロム
鋼からなる回転軸８を焼嵌めにより接合したロータ１０
を使用した。In this experiment, the bottomed cylindrical body 1 constituting the rotor 10 was formed of silicon nitride ceramics, and the rotating shaft 8 made of chrome steel was joined by shrink fitting.
It was used.
【００４０】なお、上記窒化珪素質セラミックスは、Ｓ
ｉ3 Ｎ4 ９０重量％に対し、Ｙ2 Ｏ3 を５重量％と、Ａ
ｌ2 Ｏ3 を５重量％の範囲でそれぞれ含有しなり、平均
結晶粒子径が０．５μｍで、かつアスペクト比３以上の
窒化珪素粒子を８０％含んだものを使用した。また、上
記窒化珪素質セラミックスの特性は、ＪＩＳ Ｒ １６
０１による４点曲げ強度８５ｋｇ／ｍｍ2 、破壊靱性値
（Ｋ1c）６ＭＰａｍ1/ 2 で、比重は３．２であった。The above silicon nitride ceramics are
5% by weight of Y 2 O 3 with respect to 90% by weight of i 3 N 4
l containing respectively become the 2 O 3 in the range of 5 wt%, were used as the average crystal grain size of 0.5 [mu] m, and including an aspect ratio of 3 or more silicon nitride particles 80%. The characteristics of the silicon nitride ceramics are described in JIS R 16
01 4-point by bending strength 85 kg / mm 2, in fracture toughness (K 1c) 6MPam 1/2 , a specific gravity of 3.2.
【００４１】また、本実験において、いずれのロータ１
０も上下内壁面３，４を中心線平均粗さ（Ｒａ）０．８
μｍとするとともに、繊維収束溝５の下面５ｂを螺旋状
のうねり５１を有する焼き放し面とし、かつ繊維収束溝
５の上面５ａと紡糸室２の上部内壁面３との稜部にＲ
０．１ｍｍの面取り部５ｃを形成した。In this experiment, any rotor 1
Center line average roughness (Ra) 0.8
μm, the lower surface 5b of the fiber focusing groove 5 is an annealed surface having a spiral undulation 51, and R is formed on the ridge between the upper surface 5a of the fiber focusing groove 5 and the upper inner wall surface 3 of the spinning chamber 2.
A chamfered portion 5c of 0.1 mm was formed.
【００４２】そして、使用する糸として綿１００％、紡
出番手１０S の太番手糸を使用し、ロータ１０を６万r.
p.m 程度の回転速度で回転させた時の糸切れによる稼働
効率の低下を測定した。The yarn to be used is made of 100% cotton and a spun yarn of 10 S thick yarn, and the rotor 10 is set at 60,000 rpm.
A decrease in operating efficiency due to yarn breakage when rotated at a rotation speed of about pm was measured.
【００４３】なお、稼働効率とは１２時間を基準時間と
し、この基準時間に対して実際に精紡機を稼働させるこ
とができた累積時間の割合のことである。The operating efficiency is a ratio of the accumulated time during which the spinning machine can be actually operated to the reference time of 12 hours.
【００４４】結果は図５に示す通りである。The results are as shown in FIG.
【００４５】この結果、断面曲線の最大部と最小部の差
が１０μｍより大きいものは、稼働効率にバラツキがあ
り、また、平均した稼働効率も悪かった。As a result, when the difference between the maximum part and the minimum part of the cross-sectional curve was larger than 10 μm, the operating efficiency varied, and the average operating efficiency was poor.
【００４６】これに対し、繊維収束溝５の上面５ａを焼
き放し面とするとともに、断面曲線の最大部と最小部の
差を１０μｍ以下とすれば、稼働効率の平均値を８０％
以上とでき、優れていた。On the other hand, if the upper surface 5a of the fiber converging groove 5 is an annealed surface and the difference between the maximum and the minimum of the cross-sectional curve is 10 μm or less, the average value of the operating efficiency is 80%.
Above, it was excellent.
【００４７】（実施例２）次に、繊維収束溝５の上面５
ａと紡糸室２の上部内壁面３との稜部における面取り量
を異ならせたロータ１０をそれぞれ４個ずつ試作し、実
施例１と同様の条件にて稼働効率を測定した。(Example 2) Next, the upper surface 5 of the fiber focusing groove 5
Four rotors 10 each having a different chamfer amount at the ridge portion between a and the upper inner wall surface 3 of the spinning chamber 2 were prototyped, and the operating efficiency was measured under the same conditions as in Example 1.
【００４８】なお、本実験では、ロータ１０を構成する
有底筒状体１を実施例１と同様の窒化珪素により形成
し、繊維収束溝５の上面５ａを、断面曲線の最大部と最
小部の差が５μｍである焼き放し面とするとともに、繊
維収束溝５の下面５ｂを、螺旋状のうねり５１を有する
焼き放し面とし、かつ繊維収束溝５を除く紡糸室２の上
下内壁面３，４を中心線平均粗さ（Ｒａ）０．８μｍと
したものを使用した。In this experiment, the bottomed cylindrical body 1 constituting the rotor 10 was formed of the same silicon nitride as that of the first embodiment, and the upper surface 5a of the fiber converging groove 5 was adjusted to the maximum and minimum portions of the sectional curve. And the lower surface 5b of the fiber converging groove 5 is a burned surface having a spiral undulation 51, and the upper and lower inner wall surfaces 3 of the spinning chamber 2 excluding the fiber converging groove 5 are formed. 4 was used with a center line average roughness (Ra) of 0.8 μm.
【００４９】繊維収束溝５の上面５ａと紡糸室２の上部
内壁面３との稜部における面取り量及び結果は図６に示
す通りである。FIG. 6 shows the amount of chamfering at the ridge between the upper surface 5a of the fiber converging groove 5 and the upper inner wall surface 3 of the spinning chamber 2 and the results.
【００５０】この結果、繊維収束溝５の上面５ａと紡糸
室２の上部内壁面３との稜部における面取り量がＲ０．
４ｍｍ以上となると、稼働効率の低下が見られた。As a result, the chamfer amount at the ridge between the upper surface 5a of the fiber converging groove 5 and the upper inner wall surface 3 of the spinning chamber 2 is R0.
When it was 4 mm or more, a decrease in operating efficiency was observed.
【００５１】従って、繊維収束溝５の上面５ａと紡糸室
２の上部内壁面３との稜部における面取り量はＲ０．３
ｍｍ以下とすれば良いことが判る。Therefore, the chamfer amount at the ridge between the upper surface 5a of the fiber converging groove 5 and the upper inner wall surface 3 of the spinning chamber 2 is R0.3.
It can be seen that the distance should be set to be equal to or less than mm.
【００５２】（実施例３）さらに、図１に示すロータ１
０を用意し、繊維収束溝５の下面５ｂに螺旋状のうねり
５１を形成したものと、うねり５１のないものをそれぞ
れ４個ずつ試作し、実施例１と同様の条件にて稼働効率
を測定を行った。(Embodiment 3) The rotor 1 shown in FIG.
No. 0, four spiral undulations 51 were formed on the lower surface 5b of the fiber converging groove 5, and four ridges without the undulations 51 were prototyped, and the operating efficiency was measured under the same conditions as in Example 1. Was done.
【００５３】本実験では、ロータ１０を構成する有底筒
状体１を実施例１と同様の窒化珪素により形成し、繊維
収束溝５の上面５ａを、断面曲線の最大部と最小部の差
が１０μｍである焼き放し面とするとともに、繊維収束
溝５の上面５ａと紡糸室２の上部内壁面３との稜部にＲ
０．１ｍｍの面取り部５ｃを形成し、かつ繊維収束溝５
を除く紡糸室２の上下内壁面３，４を中心線平均粗さ
（Ｒａ）０．８μｍとしたものを使用した。In this experiment, the bottomed cylindrical body 1 constituting the rotor 10 was formed of the same silicon nitride as that of the first embodiment, and the upper surface 5a of the fiber converging groove 5 was formed by the difference between the maximum and the minimum of the sectional curve. Is 10 μm, and R is formed on the ridge between the upper surface 5 a of the fiber converging groove 5 and the upper inner wall surface 3 of the spinning chamber 2.
Forming a chamfered portion 5c of 0.1 mm;
The upper and lower inner wall surfaces 3, 4 of the spinning chamber 2 except for the center line average roughness (Ra) were 0.8 μm.
【００５４】結果は図７に示す通りである。The results are as shown in FIG.
【００５５】この結果、繊維収束溝５の下面５ｂに螺旋
状のうねり５１を形成したものは、螺旋状のうねり５１
のないものに比べ、稼働効率を大幅に高めることができ
た。As a result, the helical undulation 51 formed on the lower surface 5b of the fiber converging groove 5 is a helical undulation 51.
The operating efficiency was greatly improved compared to the case without the system.
【００５６】[0056]
【発明の効果】以上のように、本発明によれば、短繊維
群の投入と撚り糸の取り出しのための開口を有する紡糸
室を備え、該紡糸室の内壁面に短繊維群を加撚して撚り
糸を形成するための繊維収束溝を備えてなるセラミック
製の有底筒状体と、該有底筒状体に接合した回転軸とか
らなるオープンエンド精紡機用ロータにおいて、上記繊
維収束溝の上面における断面曲線の最大部と最小部の差
を１０μｍ以下とし、上記繊維収束溝の上面と紡糸室の
内壁面との稜部に面取りを施すとともに、上記繊維収束
溝の下面に螺旋状のうねりを形成することにより、短繊
維群や実かす、葉かす、砂、ホコリといったゴミとの摺
動や衝突において、大きく摩耗したり、あるいは脱粒や
チッピングを生じることがなく、長期間にわたって品質
の良い糸を安定して製造することがきるとともに、糸切
れを少なくできることから稼働効率を大幅に向上させる
ことができる。As described above, according to the present invention, there is provided a spinning chamber having an opening for feeding the short fiber group and taking out the twisted yarn, and twisting the short fiber group on the inner wall surface of the spinning chamber. In a rotor for an open-end spinning machine comprising a ceramic bottomed cylindrical body having a fiber converging groove for forming a twisted yarn, and a rotating shaft joined to the bottomed cylindrical body, the fiber converging groove The difference between the maximum portion and the minimum portion of the cross-sectional curve on the upper surface of the fiber is set to 10 μm or less, and the ridge between the upper surface of the fiber convergence groove and the inner wall surface of the spinning chamber is chamfered. By forming undulations, in the event of sliding or collision with dust such as staple fibers, refuse, leaf residue, sand, dust, etc. Stabilize good yarn With Kill be produced, it is possible to greatly improve the operation efficiency because it can reduce the yarn breakage.
【図１】本発明に係るオープンエンド精紡機用ロータの
一実施形態を示す一部を破断した正面図である。FIG. 1 is a partially cutaway front view showing an embodiment of a rotor for an open-end spinning machine according to the present invention.
【図２】図１のＡ部を拡大した断面図である。FIG. 2 is an enlarged sectional view of a portion A in FIG. 1;
【図３】図１のオープンエンド精紡機用ロータのうち、
繊維収束溝を拡大した斜視図である。FIG. 3 shows the rotor for the open-end spinning frame shown in FIG.
It is the perspective view which expanded the fiber convergence groove.
【図４】本発明に係るオープンエンド精紡機用ロータの
他の実施形態にうち、有底筒状体のみを示す一部を破断
した正面図である。FIG. 4 is a front view of another embodiment of the rotor for an open-end spinning machine according to the present invention, in which only a bottomed cylindrical body is partially broken away.
【図５】繊維収束溝の上面における断面曲線の最大部と
最小部との差を変化させた時の稼働効率を示すグラフで
ある。FIG. 5 is a graph showing operating efficiency when the difference between the maximum part and the minimum part of the cross-sectional curve on the upper surface of the fiber converging groove is changed.
【図６】繊維収束溝の上面と紡糸室の上部内壁面との稜
部における面取り量を異ならせた時の稼働効率を示すグ
ラフである。FIG. 6 is a graph showing the operating efficiency when the amount of chamfering at the ridge between the upper surface of the fiber converging groove and the upper inner wall surface of the spinning chamber is varied.
【図７】繊維収束溝の下面に螺旋状のうねりを設けたも
のとうねりのないものの稼働効率を示すグラフである。FIG. 7 is a graph showing the operating efficiency of a case where a spiral undulation is provided on the lower surface of a fiber converging groove and a case where there is no undulation.
【図８】一般的なオープンエンド精紡機を示す概略図で
ある。FIG. 8 is a schematic view showing a general open-end spinning machine.
１：有底筒状体 ２：紡糸室 ３：上部内壁面 ４：下部内壁面 ５：繊維収束溝 ５ａ：上面 ５ｂ：下面 ５ｃ：面取り部 ６：底面 ７：ボス ８：回転軸 １０：オープンエンド精紡機用ロータ 1: bottomed cylindrical body 2: spinning chamber 3: upper inner wall surface 4: lower inner wall surface 5: fiber converging groove 5a: upper surface 5b: lower surface 5c: chamfered portion 6: bottom surface 7: boss 8: rotating shaft 10: open end Spinner rotor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松岡 徹 鹿児島県国分市山下町１番１号 京セラ株 式会社鹿児島国分工場内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toru Matsuoka 1-1, Yamashita-cho, Kokubu-shi, Kagoshima Inside the Kyocera Corporation's Kagoshima Kokubu Plant
Claims (2)
の開口を有する紡糸室を備え、該紡糸室の内壁面に短繊
維群を加撚して撚り糸を形成するための繊維収束溝を備
えてなるセラミック製の有底筒状体と、該有底筒状体の
底部に接合した回転軸とからなるオープンエンド精紡機
用ロータにおいて、上記繊維収束溝の上面における断面
曲線の最大部と最小部の差を１０μｍ以下とするととも
に、上記繊維収束溝の上面と紡糸室の内壁面との稜部に
Ｒ０．３ｍｍ以下の面取りを施したことを特徴とするオ
ープンエンド精紡機用ロータ。1. A spinning chamber having an opening for feeding a short fiber group and taking out a twisted yarn, and a fiber converging groove for twisting the short fiber group to form a twisted yarn on an inner wall surface of the spinning chamber. In a rotor for an open-end spinning machine comprising a ceramic bottomed cylindrical body provided and a rotating shaft joined to the bottom of the bottomed cylindrical body, a maximum part of a cross-sectional curve on an upper surface of the fiber converging groove is provided. A rotor for an open-end spinning machine, characterized in that the difference between the minimum portions is 10 μm or less, and the ridge between the upper surface of the fiber converging groove and the inner wall surface of the spinning chamber is chamfered to 0.3 mm or less.
の開口を有する紡糸室を備え、該紡糸室の内壁面に短繊
維群を加撚して撚り糸を形成するための繊維収束溝を備
えてなるセラミック製の有底筒状体と、該有底筒状体の
底部に接合した回転軸とからなるオープンエンド精紡機
用ロータにおいて、上記繊維収束溝の下面に螺旋状のう
ねりを形成したことを特徴とするオープンエンド精紡機
用ロータ。2. A spinning chamber having an opening for feeding a short fiber group and taking out a twisted yarn, and a fiber converging groove for twisting the short fiber group to form a twisted yarn on an inner wall surface of the spinning chamber. In a rotor for an open-end spinning machine comprising a ceramic bottomed cylindrical body provided and a rotating shaft joined to the bottom of the bottomed cylindrical body, a spiral undulation is formed on the lower surface of the fiber converging groove. A rotor for an open-end spinning machine, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14062397A JP3537636B2 (en) | 1997-05-29 | 1997-05-29 | Open-end spinning machine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14062397A JP3537636B2 (en) | 1997-05-29 | 1997-05-29 | Open-end spinning machine rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10331035A true JPH10331035A (en) | 1998-12-15 |
| JP3537636B2 JP3537636B2 (en) | 2004-06-14 |
Family
ID=15273017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14062397A Expired - Fee Related JP3537636B2 (en) | 1997-05-29 | 1997-05-29 | Open-end spinning machine rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3537636B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3626870A1 (en) | 2018-09-20 | 2020-03-25 | Saurer Spinning Solutions GmbH & Co. KG | Spinning rotor and holder for rotating a rotor socket of a spinning rotor, method for producing a press-fit connection between a rotor socket and a holder |
-
1997
- 1997-05-29 JP JP14062397A patent/JP3537636B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3626870A1 (en) | 2018-09-20 | 2020-03-25 | Saurer Spinning Solutions GmbH & Co. KG | Spinning rotor and holder for rotating a rotor socket of a spinning rotor, method for producing a press-fit connection between a rotor socket and a holder |
| DE102018007453A1 (en) * | 2018-09-20 | 2020-03-26 | Saurer Spinning Solutions Gmbh & Co. Kg | Holder for rotating a rotor cup of a spinning rotor, spinning rotor and method for producing a press connection between a rotor cup and a holder |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3537636B2 (en) | 2004-06-14 |
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