JPH0510461A - Machining method of rotary valve and its valve plug - Google Patents
Machining method of rotary valve and its valve plugInfo
- Publication number
- JPH0510461A JPH0510461A JP18408491A JP18408491A JPH0510461A JP H0510461 A JPH0510461 A JP H0510461A JP 18408491 A JP18408491 A JP 18408491A JP 18408491 A JP18408491 A JP 18408491A JP H0510461 A JPH0510461 A JP H0510461A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- seat
- spherical surface
- valve body
- spherical
- 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
- Taps Or Cocks (AREA)
- Turning (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、弁体が球面または部分
球面からなる着座部をもつ回転弁およびその弁体の加工
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary valve having a seat portion in which a valve body is spherical or partially spherical, and a method of processing the valve body.
【０００２】[0002]
【従来の技術】弁体の着座部が球面または部分球面をし
ている弁としては、シートリングの中心線上と弁体の球
心が一致している同心型（一般のボール弁）と、シート
リングの中心線に対して弁体の球心が偏心している偏心
型とがある。図６は同心型回転弁の従来例を示すもの
で、この回転弁１は、弁本体２の流路３中に貫通孔５を
有する球状の弁体４を内装し、この弁体４を前記弁本体
２の中心線と直交する弁軸６によって回転させることに
より、流路３を開き、その回動角度に応じた流量制御を
行うものである。弁体４の外周面は、球心を流路３の上
流側に内装されたシートリング７の中心線上に一致させ
た球面とされ、シートリング７の着座面８に密接される
ことにより球面着座部４Ａを形成している。図７は偏心
型回転弁の従来例を示すもので、この回転弁１１は、バ
ルブプラグ１２を外側面が球面着座部１３を形成する円
盤状の弁体１２Ａと、弁体１２Ａの背面に一体に突設さ
れた上下一対の腕部１２Ｂ、１２Ｃとで構成し、上側の
腕部１２Ｂを弁軸６に嵌合固定し、下側の腕部１２Ｃを
弁本体２内に突設したスタッド１４で回転自在に軸支し
たもので、着座部１３の球心をプラグの回転中心から偏
心させることにより、通常すなわち全閉時に弁体１２Ａ
の球面着座部１３をシートリング７のシート部８に密接
させ、弁軸６によって弁体１２Ａを回動させると、シー
ト部８から離反させるようにしている。2. Description of the Related Art Valves in which the seat portion of the valve element is spherical or partially spherical include a concentric type (general ball valve) in which the center line of the seat ring and the spherical center of the valve element coincide with each other, and a seat. There is an eccentric type in which the spherical center of the valve element is eccentric with respect to the center line of the ring. FIG. 6 shows a conventional example of a concentric rotary valve. This rotary valve 1 has a spherical valve body 4 having a through hole 5 in a flow passage 3 of a valve body 2 and the valve body 4 is The flow path 3 is opened by rotating the valve body 6 by the valve shaft 6 that is orthogonal to the center line of the valve body 2, and the flow rate is controlled according to the rotation angle. The outer peripheral surface of the valve body 4 is a spherical surface having a spherical center aligned with the center line of the seat ring 7 installed on the upstream side of the flow path 3, and is brought into close contact with the seating surface 8 of the seat ring 7 to allow spherical seating. The portion 4A is formed. FIG. 7 shows a conventional example of an eccentric rotary valve. In this rotary valve 11, a valve plug 12 has a disc-shaped valve body 12A whose outer surface forms a spherical seating portion 13 and a rear surface of the valve body 12A. A pair of upper and lower arm portions 12B and 12C protruding from each other, the upper arm portion 12B is fitted and fixed to the valve shaft 6, and the lower arm portion 12C is protruded into the valve body 2 Is rotatably supported by the valve body 12A by eccentric the ball center of the seat portion 13 from the center of rotation of the plug so that the valve body 12A is normally closed.
The spherical seat portion 13 is brought into close contact with the seat portion 8 of the seat ring 7, and when the valve body 12A is rotated by the valve shaft 6, the spherical seat portion 13 is separated from the seat portion 8.
【０００３】[0003]
【発明が解決しようとする課題】上記した同心型の回転
弁１において、球面着座部４Ａの加工方法としては着座
部４Ａの球心が弁体４の軸心と一致しているため、弁体
４をその中心軸周りに回転させて切削刃をモデルにした
がって倣わせるか、あるいは数値制御によって円弧状に
往復移動させることで、容易に所定の球面を得ることが
できる。しかし、同心型の場合は弁体４がシートリング
７と常時摺接しているので、着座部４Ａおよびシート部
８の摩耗が激しく、耐久性に欠けるという問題があっ
た。一方、偏心型回転弁１１の場合は、弁閉止時のみシ
ートリング７と弁体１２Ａとが接触するので、着座部１
３とシート部８の摩耗が少なく耐久性に優れている。し
かしながら、弁体１２Ａの回転中心と球心とに偏心量が
あり、弁体１２Ａの製作にはこの偏心量を精密に弁本体
２側の偏心量と一致させると共に、球心精度をも確保す
る必要があり、極めて高度の加工を必要とするという問
題があった。In the concentric rotary valve 1 described above, as a method of processing the spherical seat portion 4A, the spherical center of the seat portion 4A coincides with the axial center of the valve body 4 A predetermined spherical surface can be easily obtained by rotating 4 around its central axis to cause the cutting blade to follow the model, or by reciprocating in an arc shape by numerical control. However, in the case of the concentric type, since the valve body 4 is always in sliding contact with the seat ring 7, there is a problem that the seat portion 4A and the seat portion 8 are heavily worn and lack durability. On the other hand, in the case of the eccentric rotary valve 11, since the seat ring 7 and the valve body 12A contact each other only when the valve is closed, the seating portion 1
3 and the seat portion 8 are less worn and have excellent durability. However, there is an eccentric amount between the center of rotation of the valve body 12A and the ball center, and when manufacturing the valve body 12A, this eccentric amount is precisely matched with the eccentric amount on the valve body 2 side, and the ball center accuracy is also secured. However, there is a problem in that extremely high-level processing is required.
【０００４】したがって、本発明は上記したような従来
の問題点に鑑みてなされたもので、その目的とするとこ
ろは、同心型の回転弁において、弁体着座部とシートリ
ングのシート部の摩耗が少なく長寿命化と、長期間に亙
って安定したシール性能と得ることができるようにした
回転弁およびその弁体の加工方法を提供することにあ
る。Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is, in a concentric rotary valve, wear of a seat portion of a valve body and a seat portion of a seat ring. The object of the present invention is to provide a rotary valve and a method for processing a valve body thereof, which can obtain a long life and a stable sealing performance over a long period of time.
【０００５】[0005]
【課題を解決するための手段】本発明は上記目的を達成
するためになされたもので、その第１の発明は、球面ま
たは部分球面部を有する弁体の回転運動により、前記球
面または部分球面部の一部によってシートリングの開口
を開閉する回転弁において、前記弁体の着座部は、前記
弁体が開方向に回転する際に、シート閉止位置を過ぎる
点より、回転角度に略比例してシートリングのシート部
から離れるように、後退する形状とされているものであ
る。第２の発明は、上記第１の発明による回転弁におけ
る弁体の加工方法において、弁体をその回転軸周りに回
転させながら、その回転軸と垂直な軸周りに回転する切
削刃によって弁体着座部を球面に加工する際、弁体着座
部のシート閉止位置を過ぎる位置より、前記回転軸周り
の回転と略比例するように、前記切削刃を弁体に対して
前進させるように、同期して送りをかけるようにしたも
のである。The present invention has been made to achieve the above object, and the first invention thereof is that the spherical surface or the partial spherical surface is formed by the rotational movement of the valve body having the spherical surface or the partial spherical surface portion. In the rotary valve that opens and closes the opening of the seat ring by a part of the portion, the seating portion of the valve body is substantially proportional to the rotation angle from the point of passing the seat closed position when the valve body rotates in the opening direction. The shape of the seat ring is such that it recedes away from the seat portion of the seat ring. A second aspect of the present invention is the method for processing a valve element in a rotary valve according to the first aspect of the present invention, wherein the valve element is rotated by a cutting blade that rotates about an axis perpendicular to the rotational axis while rotating the valve element about its rotational axis. When processing the seating portion into a spherical surface, from the position past the seat closing position of the valve body seating portion, so as to be substantially proportional to the rotation around the rotation axis, to advance the cutting blade with respect to the valve body, synchronously Then, it was sent.
【０００６】[0006]
【作用】本発明において、弁体着座部は、弁体が開方向
に回動してシート閉止位置を過ぎると、回転角度に比例
してシートリングのシート部から離反し、摩耗を減ら
す。弁体着座部の加工に際して、弁体着座部のシート閉
止位置を過ぎる位置より切削刃を弁体に対して前進させ
ると、曲率半径が小さくなり、シートリングに対して非
接触部分が形成される。In the present invention, when the valve body rotates in the opening direction and passes the seat closing position, the valve body seating portion separates from the seat portion of the seat ring in proportion to the rotation angle and reduces wear. When processing the valve body seating part, if the cutting blade is advanced with respect to the valve body beyond the seat closing position of the valve body seating part, the radius of curvature becomes smaller and a non-contact portion is formed with respect to the seat ring. .
【０００７】[0007]
【実施例】以下、本発明を図面に示す実施例に基づいて
詳細に説明する。図１(a)、(b)は本発明による回転弁の
全閉状態と、全開状態を示す図、図２は同回転弁の断面
図である。これらの図において、弁装置２０は、弁軸６
の内端に取り付けられ弁本体２内に配設されたバルブプ
ラグ２１を備えている。バルブプラグ２１は、内側がく
りぬかれた球面または部分球面部を有する弁体２２と、
弁体２２の上下面にそれぞれ一体に突設された円筒状の
軸受部２３、２４とで構成され、弁体２２の外周面には
弁軸６の回転方向に長い帯状の球面着座部２５が一段高
くなるように突出形成されると共に、イコールパーセン
ト特性部を形成する開口２６が前記球面着座部２５の一
端部と重なるように形成されている。球面着座部２５の
幅Ｄは、シートリング７のシート部８の内径Ａよりやや
大きく設定（Ｄ＞Ａ）されている。また、球面着座部２
５のうち全閉時においてシート部８に着座しシートリン
グ７を閉鎖する弁閉止領域部Ｉは、球心をバルブプラグ
２１の回転中心０と一致させた球面とされ、開口２６が
設けられた弁開放領域部ＩＩは、シート閉止位置を過ぎ
る点Ｐより、弁体２２の回転角度θに略比例してシート
リング７のシート部８から後退離反するように、曲率半
径が前記弁閉止領域部Ｉより小さく、且つ球心がバルブ
プラグ２１の回転中心０から偏心した球面とされる。し
たがって、シート閉止位置Ｐを過ぎると、シートリング
７との接触面圧が減少し、球面着座部２５の摩耗を軽減
させることができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. 1 (a) and 1 (b) are views showing a fully closed state and a fully opened state of a rotary valve according to the present invention, and FIG. 2 is a sectional view of the rotary valve. In these drawings, the valve device 20 has a valve shaft 6
It has a valve plug 21 attached to the inner end of the valve and arranged in the valve body 2. The valve plug 21 includes a valve body 22 having a spherical surface or a partially spherical surface whose inside is hollowed out,
The upper and lower surfaces of the valve body 22 are integrally formed with cylindrical bearing portions 23 and 24, respectively, and the outer peripheral surface of the valve body 22 has a belt-shaped spherical seat portion 25 that is long in the rotational direction of the valve shaft 6. The protrusion 26 is formed so as to be raised one step higher, and the opening 26 forming the equal percentage characteristic portion is formed so as to overlap with one end of the spherical seat portion 25. The width D of the spherical seat portion 25 is set to be slightly larger than the inner diameter A of the seat portion 8 of the seat ring 7 (D> A). Also, the spherical seat 2
5, the valve closing region I, which is seated on the seat portion 8 and closes the seat ring 7 when fully closed, is a spherical surface whose center coincides with the rotation center 0 of the valve plug 21, and the opening 26 is provided. The valve opening area portion II has a radius of curvature so that the valve opening area portion II is retracted and separated from the seat portion 8 of the seat ring 7 substantially in proportion to the rotation angle θ of the valve body 22 from the point P passing the seat closing position. The spherical surface is smaller than I and the spherical center is eccentric from the rotation center 0 of the valve plug 21. Therefore, after passing the seat closing position P, the contact surface pressure with the seat ring 7 is reduced, and the wear of the spherical seat portion 25 can be reduced.
【０００８】前記上側の軸受部２３には前記弁軸６の内
端が嵌合されて溶接等により一体的に接合され、下側の
軸受部２４は弁本体２の内面に突設したスタッド１４に
よって回転自在に軸支されている。そして、前記弁軸６
の外端は、弁本体２の上面開口部２７を閉鎖する蓋体２
８の中心孔２９をパッキン３０を介して貫通し、外部に
突出している。The inner end of the valve shaft 6 is fitted into the upper bearing portion 23 and integrally joined by welding or the like, and the lower bearing portion 24 is provided with a stud 14 protruding from the inner surface of the valve body 2. It is rotatably supported by. And the valve shaft 6
The outer end of the lid 2 closes the upper opening 27 of the valve body 2.
The central hole 29 of No. 8 penetrates through the packing 30 and projects to the outside.
【０００９】図３は上記弁体２１の加工方法を説明する
ための図である。バルブプラグ２１の球面着座部２５の
加工に際しては、まず鋳造等によって製作されたプラグ
素材を準備する。この時点では、軸受部２３、２４の
内、外径および長さは所定の寸法に加工されると共に、
開口２６が所定の形状に形成され、また弁軸６が軸受部
２３に取り付けられている。そして、この半製品からな
るプラグ素材は弁軸６と共に工作機械に取付けられ、弁
軸６の中心線３２を中心として一定速度で回転される。
この回転速度は、２ｒ. ｐ. ｍ程度とされる。球面着座
部２５を切削する切削刃３５は、回転軸３６のアーム部
３７の先端に設けられることにより、回転軸３６に対し
て偏心している。回転軸３６は、その中心線３８が前記
弁軸６の中心線３２と実質的に垂直に交わるように配置
され、５００〜８００ｒ. ｐ. ｍで回転される。FIG. 3 is a diagram for explaining a method of processing the valve body 21. In processing the spherical seat portion 25 of the valve plug 21, first, a plug material manufactured by casting or the like is prepared. At this point, the outer diameter and the length of the bearing portions 23 and 24 are processed to have predetermined dimensions, and
The opening 26 is formed in a predetermined shape, and the valve shaft 6 is attached to the bearing portion 23. The plug material made of this semi-finished product is attached to the machine tool together with the valve shaft 6, and is rotated at a constant speed around the center line 32 of the valve shaft 6.
This rotation speed is about 2 rpm. The cutting blade 35 that cuts the spherical seat 25 is eccentric with respect to the rotary shaft 36 by being provided at the tip of the arm portion 37 of the rotary shaft 36. The rotating shaft 36 is arranged so that its center line 38 intersects with the center line 32 of the valve shaft 6 substantially vertically, and is rotated at 500 to 800 rpm.
【００１０】この場合、切削刃３５の回転半径、すなわ
ち回転軸３６の中心までの距離ｒ（例えば１８ｍｍ）
と、球面着座部２５の幅Ｄおよびシートリング７の内径
Ａ（図２）は、
Ａ＜Ｄ＜２ｒ
の関係を満足するように設定される。球面着座部２５の
弁閉止領域部Ｉの切削加工に際しては、バルブプラグ２
１を弁軸６の中心線周りに低速で回転送りさせ、回転軸
３６をその中心線３８周りに回転させながら所定量前進
させると、切削刃３５が弁閉止領域部Ｉを切削し、球心
が弁体２２の中心線３２に一致する所定の球面が得られ
る。球面の大きさは切削刃３５の前進移動量で決定さ
れ、移動量が少ない場合、バルブプラグ２１の回転中心
から切削刃３５までの距離が大きいため、大きな半径の
球面となり、移動量が大きい場合、切削刃３５がバルブ
プラグ２１に近づくため小さな半径の球面となる。弁開
放領域部ＩＩの切削に際しては、上記した通り弁開放領
域部ＩＩの球心が中心線３２から偏心していることか
ら、球面着座部２５の弁閉止時位置Ｐを過ぎる点より、
前記弁体回転軸（３２）周りの回転と略比例するよう
に、前記切削刃３５０を弁体２１に対して前進させ、弁
体２１の回転と回転軸３６の送りを同期させる。In this case, the radius of rotation of the cutting blade 35, that is, the distance r to the center of the rotary shaft 36 (for example, 18 mm)
And the width D of the spherical seat portion 25 and the inner diameter A (FIG. 2) of the seat ring 7 are set so as to satisfy the relationship of A <D <2r. When cutting the valve closing region I of the spherical seat 25, the valve plug 2
When 1 is rotated and fed around the center line of the valve shaft 6 at a low speed, and the rotating shaft 36 is rotated about its center line 38 and moved forward by a predetermined amount, the cutting blade 35 cuts the valve closing region portion I and As a result, a predetermined spherical surface is obtained whose point coincides with the center line 32 of the valve body 22. The size of the spherical surface is determined by the amount of forward movement of the cutting blade 35. When the amount of movement is small, the distance from the center of rotation of the valve plug 21 to the cutting blade 35 is large, resulting in a spherical surface with a large radius, and when the amount of movement is large. Since the cutting blade 35 approaches the valve plug 21, it becomes a spherical surface having a small radius. When cutting the valve opening region II, since the spherical center of the valve opening region II is eccentric from the center line 32 as described above, from the point of passing the valve closing position P of the spherical seat 25,
The cutting blade 350 is advanced with respect to the valve body 21 so as to be substantially proportional to the rotation around the valve body rotation axis (32), and the rotation of the valve body 21 and the feed of the rotation shaft 36 are synchronized.
【００１１】このような球面着座部２５の切削加工に際
してはＮＣ旋盤などの加工機械が使用され、パルブプラ
グ２１や切削刃３５の移動、位置決めをするのにパルス
モータやサーボモータが用いられる。また、パルブプラ
グ２１や切削刃３５の位置は、加工手順にしたがってシ
ーケンスコントローラから送られる信号によって決定さ
れる。バルブプラグ２１の回転位置および切削刃３５の
軸方向の位置（θ、ｘ）は、図４の関係を保ちながら、
時間と共に変化する。すなわち、バルブプラグ２１の回
転と切削刃３５の回転と切削刃３５の移動は、同期して
いる。A machining machine such as an NC lathe is used for cutting the spherical seat portion 25, and a pulse motor or a servomotor is used for moving and positioning the valve plug 21 and the cutting blade 35. Further, the positions of the valve plug 21 and the cutting blade 35 are determined by the signal sent from the sequence controller according to the processing procedure. The rotational position of the valve plug 21 and the axial position (θ, x) of the cutting blade 35 maintain the relationship shown in FIG.
It changes over time. That is, the rotation of the valve plug 21, the rotation of the cutting blade 35, and the movement of the cutting blade 35 are synchronized.
【００１２】図５は球面着座部２５の表面に生じる切削
痕を示す図である。この切削痕４０は、バルブプラグ２
１の回転中心３２と回転軸３６の中心３８とが互いに交
わっていれば、切削刃３５で弁閉止領域部Ｉを均等に切
削するため、かすれたり、切れたりしている部分のない
奇麗な網目模様（クロスハッチ）となる。したがって、
この模様を視認検査するだけで、正確な球面が得られた
か否かを判別でき、特別な真球度を検査する必要がな
い。また、バルブプラグ２１の回転中心３２と回転軸３
６の回転中心３８とは、球面切削であるため必ずしも直
交している必要はなく、左右もしくは前後方向に傾いて
いてもかまわないが、互いに実質的に交わることが、真
球の弁閉止領域部Ｉを得る上で必要である。また、弁閉
止領域部Ｉの切削において、切削刃３５の刃先の切削部
は、従来の円弧状往復移動と異なり、単に回転するだけ
であるため、正確に常に同一部分で切削し、送り込みに
よっても変わることがない。したがって、真球面を得る
上で特別の補正制御を行う必要がない。一方、弁開放領
域部ＩＩの切削加工は、弁開放領域部ＩＩの偏心量が関
係なくなる（シートリング７のシート部８から離反する
ため）ので、精密に弁体側の偏心量と一致させる必要が
なくなり、高度の加工を必要としない。FIG. 5 is a diagram showing cutting marks formed on the surface of the spherical seat portion 25. The cutting marks 40 are formed on the valve plug 2
If the rotation center 32 of 1 and the center 38 of the rotation shaft 36 intersect each other, the cutting blade 35 cuts the valve closing region I evenly, so that there is no neat or broken portion and a beautiful mesh. It becomes a pattern (cross hatch). Therefore,
Only by visually inspecting this pattern, it is possible to determine whether or not an accurate spherical surface is obtained, and it is not necessary to inspect a special sphericity. Further, the rotation center 32 of the valve plug 21 and the rotation shaft 3
The rotation center 38 of 6 does not necessarily need to be orthogonal to each other because it is a spherical cutting, and it may be inclined in the left-right direction or the front-rear direction. It is necessary to obtain I. Further, in the cutting of the valve closing region I, the cutting portion of the cutting edge of the cutting blade 35 simply rotates, unlike the conventional arcuate reciprocating movement. It never changes. Therefore, it is not necessary to perform special correction control for obtaining a true spherical surface. On the other hand, when cutting the valve opening region II, the eccentric amount of the valve opening region II becomes irrelevant (because it separates from the seat portion 8 of the seat ring 7), so it is necessary to precisely match the eccentric amount on the valve body side. No more advanced processing required.
【００１３】[0013]
【発明の効果】以上説明したように本発明に係る回転弁
によれば、弁体の球面着座部を弁閉止時のみシートリン
グのシート部と接触させるように構成したので、着座部
とシート部の摩耗を減少させることができ、弁の長寿命
化を図ることができる。また、本発明による弁体の加工
方法によれば、球面着座部の弁閉止領域部を高い真球度
を以て加工形成することができる。As described above, according to the rotary valve of the present invention, the spherical seat portion of the valve body is configured to contact the seat portion of the seat ring only when the valve is closed. Wear of the valve can be reduced and the life of the valve can be extended. Further, according to the method for processing a valve element of the present invention, the valve closing region of the spherical seating portion can be processed and formed with high sphericity.
【図１】(a)、(b)は本発明による回転弁の全閉状態と、
全開状態を示す図である。1A and 1B show a fully closed state of a rotary valve according to the present invention,
It is a figure which shows a fully open state.
【図２】同回転弁の断面図である。FIG. 2 is a sectional view of the rotary valve.
【図３】弁体の加工方法を説明するための図である。FIG. 3 is a diagram for explaining a method of processing a valve body.
【図４】バルブプラグの回転位置と切削刃の軸方向の位
置を示す図である。FIG. 4 is a diagram showing the rotational position of the valve plug and the axial position of the cutting blade.
【図５】球面着座部の表面に生じる切削痕を示す図であ
る。FIG. 5 is a diagram showing cutting marks generated on the surface of a spherical seat portion.
【図６】同心型回転弁の従来例を示す断面図である。FIG. 6 is a sectional view showing a conventional example of a concentric rotary valve.
【図７】偏心型回転弁の従来例を示す断面図である。FIG. 7 is a sectional view showing a conventional example of an eccentric rotary valve.
６ 弁軸 ２１ バルブプラグ ２２ 弁体 ２３、２４ 軸受部 ２５ 球面着座部 ２６ 開口 ３２ 弁軸の中心線 ３５ 切削刃 ３６ 回転軸 ３８ 回転軸の中心線 6 valve shaft 21 valve plug 22 valve body 23, 24 Bearing part 25 Spherical seat 26 openings 32 Center line of valve shaft 35 cutting blade 36 rotation axis 38 Center line of rotation axis
Claims (2)
転運動により、前記球面または部分球面部の一部によっ
てシートリングの開口を開閉する回転弁において、 前記弁体の着座部は、前記弁体が開方向に回転する際
に、シート閉止位置を過ぎる点より、回転角度に略比例
してシートリングのシート部から離れるように、後退す
る形状とされていることを特徴とする回転弁。1. A rotary valve in which a seat ring opening is opened and closed by a part of the spherical surface or the partial spherical surface portion by a rotational movement of a valve body having a spherical surface or a partial spherical surface portion, wherein the seating portion of the valve element is the valve. A rotary valve, wherein when the body rotates in the opening direction, the rotary valve is shaped so as to recede from the seat closing position so as to move away from the seat portion of the seat ring substantially in proportion to the rotation angle.
加工方法において、弁体をその回転軸周りに回転させな
がら、その回転軸と垂直な軸周りに回転する切削刃によ
って弁体着座部を球面に加工する際、弁体着座部のシー
ト閉止位置を過ぎる位置より、前記回転軸周りの回転と
略比例するように、前記切削刃を弁体に対して前進させ
るように、同期して送りをかけるようにしたことを特徴
とする弁体の加工方法。2. The method for processing a valve element in a rotary valve according to claim 1, wherein the valve element is seated by a cutting blade that rotates about an axis perpendicular to the axis of rotation while rotating the valve element about its axis of rotation. When processing the portion into a spherical surface, from the position beyond the seat closing position of the valve seat sitting portion, so as to be substantially proportional to the rotation around the rotation axis, to advance the cutting blade with respect to the valve body, synchronized, A method for processing a valve body, which is characterized in that the feeding is performed by feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3184084A JP2587329B2 (en) | 1991-06-28 | 1991-06-28 | Processing method of rotary disc valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3184084A JP2587329B2 (en) | 1991-06-28 | 1991-06-28 | Processing method of rotary disc valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0510461A true JPH0510461A (en) | 1993-01-19 |
| JP2587329B2 JP2587329B2 (en) | 1997-03-05 |
Family
ID=16147120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3184084A Expired - Lifetime JP2587329B2 (en) | 1991-06-28 | 1991-06-28 | Processing method of rotary disc valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2587329B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014098489A (en) * | 2004-06-29 | 2014-05-29 | Fisher Controls International Llc | Fluid valve control members having sealing outer surfaces |
| CN105598472A (en) * | 2016-02-01 | 2016-05-25 | 球豹阀门有限公司 | Spherical surface and chamfering integrated lathe turning device for sphere of spherical valve |
| JP2017194130A (en) * | 2016-04-21 | 2017-10-26 | 前澤工業株式会社 | Non-slide valve and assembly method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5368440A (en) * | 1976-11-26 | 1978-06-17 | Royal Industries | Valve |
| JPS6362973A (en) * | 1986-08-29 | 1988-03-19 | Asahi Kogyo Kk | Valve |
| JPH02127864U (en) * | 1989-03-30 | 1990-10-22 |
-
1991
- 1991-06-28 JP JP3184084A patent/JP2587329B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5368440A (en) * | 1976-11-26 | 1978-06-17 | Royal Industries | Valve |
| JPS6362973A (en) * | 1986-08-29 | 1988-03-19 | Asahi Kogyo Kk | Valve |
| JPH02127864U (en) * | 1989-03-30 | 1990-10-22 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014098489A (en) * | 2004-06-29 | 2014-05-29 | Fisher Controls International Llc | Fluid valve control members having sealing outer surfaces |
| CN105598472A (en) * | 2016-02-01 | 2016-05-25 | 球豹阀门有限公司 | Spherical surface and chamfering integrated lathe turning device for sphere of spherical valve |
| JP2017194130A (en) * | 2016-04-21 | 2017-10-26 | 前澤工業株式会社 | Non-slide valve and assembly method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2587329B2 (en) | 1997-03-05 |
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