JPS63264236A - Manufacture of valve sleeve - Google Patents
Manufacture of valve sleeveInfo
- Publication number
- JPS63264236A JPS63264236A JP10079987A JP10079987A JPS63264236A JP S63264236 A JPS63264236 A JP S63264236A JP 10079987 A JP10079987 A JP 10079987A JP 10079987 A JP10079987 A JP 10079987A JP S63264236 A JPS63264236 A JP S63264236A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical material
- hole
- bottomed
- cylindrical
- valve sleeve
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000000463 material Substances 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 238000005498 polishing Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000010273 cold forging Methods 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract 1
- 238000005482 strain hardening Methods 0.000 abstract 1
- 239000007769 metal material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007730 finishing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 、この発明は、弁スリーブ製造方法に関する。[Detailed description of the invention] Industrial applications , This invention relates to a method for manufacturing a valve sleeve.
従来の技術
従来、孔の内周面に複数の溝が軸方向に沿って形成され
た弁スリーブと、この弁スリーブの溝と対応する溝が外
周面に形成されたロータとを設け、このロータを弁スリ
ーブの孔に嵌合し、ロータを回転させることによりロー
タの溝に連通させる弁スリーブの溝を選択するようにし
た回転弁が存する。Conventional technology Conventionally, a valve sleeve is provided with a plurality of grooves formed along the axial direction on the inner circumferential surface of a hole, and a rotor is provided with grooves formed on the outer circumferential surface corresponding to the grooves of the valve sleeve. There is a rotary valve in which a groove in the valve sleeve is fitted into a hole in a valve sleeve and a groove in the valve sleeve communicates with the groove in the rotor by rotating the rotor.
このような回転弁においては、特開昭６１−２７８４６
７号公報の第１３図、第１５図、第１７図に記載された
ように、弁スリーブの溝は両端が閉塞状態で形成されて
いなければならない。Regarding such rotary valves, Japanese Patent Application Laid-Open No. 61-27846
As described in FIGS. 13, 15, and 17 of Publication No. 7, the groove of the valve sleeve must be formed with both ends closed.
また、特開昭ｆ３１−２７８４６７号公報においては、
複数のパンチ部材を放射方向に進退自在に配列してなる
パンチを筒状の形状に形成された素材に圧入し、この素
材を塑性変形させて弁スリーブを成形している。In addition, in Japanese Patent Application Laid-open No. Sho f31-278467,
A punch formed by arranging a plurality of punch members so as to move back and forth in the radial direction is press-fitted into a cylindrical material, and the material is plastically deformed to form the valve sleeve.
発明が解決しようとする問題点
しかし、弁スリー、ブの溝の開口縁をエツジ状に形成す
ることが困難である。このため、ロータの回転位置によ
っては弁スリーブとロータとの間に流体の漏れが生じる
おそれがある。Problems to be Solved by the Invention However, it is difficult to form the opening edge of the groove of the valve sleeve into an edge shape. Therefore, depending on the rotational position of the rotor, fluid may leak between the valve sleeve and the rotor.
このようなことから、回転するカッタを円筒形の素材の
内周面に接触させ、カッタに対して円筒形の素材を軸方
向に移動させることにより溝を形成する方法があるが、
このような方法は工作時間が長く、また、溝を切削する
ための装置が複雑である。For this reason, there is a method of forming a groove by bringing a rotating cutter into contact with the inner peripheral surface of a cylindrical material and moving the cylindrical material in the axial direction relative to the cutter.
This method requires a long machining time and requires complicated equipment for cutting the grooves.
問題点を解決するための手段
一面開口の孔と、この孔の内周面に軸方向に沿わされて
この孔の開口面側の一端が開放され他端が閉塞された複
数の溝とを有する有底素材を冷間鍛造により形成する有
底素材形成工程と、前記有底素材の底部を除去して筒状
素材を形成する筒状素材形成工程と、
前記溝の開放側の前記筒状素材の端部を一端から一定長
さの範囲にわたり高周波加熱する局部加熱工程と、
前記筒状素材の高周波加熱された局部を内方に変形させ
て環状突部を形成する成形工程と。Means for Solving Problems: A hole having an opening on one side and a plurality of grooves extending along the inner peripheral surface of the hole in the axial direction and having one end open on the opening side of the hole and closed at the other end. a bottomed material forming step of forming a bottomed material by cold forging; a cylindrical material forming step of removing the bottom of the bottomed material to form a cylindrical material; and the cylindrical material on the open side of the groove. a local heating step in which the end portion of the cylindrical material is subjected to high frequency heating over a certain length range from one end; and a forming step in which the high frequency heated local portion of the cylindrical material is deformed inward to form an annular protrusion.
前記筒状素材の内周面を切削又は研磨により仕上げる内
面仕上げ工程とにより弁スリーブを製造する。The valve sleeve is manufactured by an inner finishing step of finishing the inner peripheral surface of the cylindrical material by cutting or polishing.
作用
したがって、有底素材形成工程においては一端が開放さ
れ他端が閉塞された複数の溝を一度に能率的に形成し、
筒状素材形成工程においては有底素材の底部を開口し、
局部加熱工程においては筒状素材の開口面側を加熱して
変形し易くし、成形工程においては筒状素材の高周波加
熱された局部を内方に変形させて環状突部を形成して溝
の開放端を閉塞し、内面仕上げ工程においては筒状素材
の内周面を切削又は研磨することにより溝の縁をエツジ
状に仕上げることが可能となる。Therefore, in the bottomed material forming process, a plurality of grooves with one end open and the other end closed can be efficiently formed at once.
In the cylindrical material forming process, the bottom of the bottomed material is opened,
In the local heating process, the opening side of the cylindrical material is heated to make it easier to deform, and in the forming process, the high-frequency heated local part of the cylindrical material is deformed inward to form an annular protrusion and to form a groove. By closing the open end and cutting or polishing the inner peripheral surface of the cylindrical material in the inner surface finishing step, it is possible to finish the edge of the groove into an edge shape.
実施例 この発明の一実施例を図面に基づいて説明する。Example An embodiment of the present invention will be described based on the drawings.
まず、第２図に示すように、金属材１を形成する。First, as shown in FIG. 2, a metal material 1 is formed.
この金属材ｌは、材料切断工程において断面円形の棒材
を切断することにより形成される。This metal material 1 is formed by cutting a bar having a circular cross section in a material cutting process.
有底素材形成工程においては、まず、金属材１を図示し
ないパンチとダイスとにより塑性変形させ、第３図に示
すようこの金属材１を軸方向に延ばすとともに一面開口
の孔２を形成して有底素材３ａを形成する。さらに、第
４図及び第５図に示すように、外周面に複数の突条４が
形成されたパンチ５を孔２に圧入することにより、第６
図及び・ 第７図に示すように突条４に対応する複数
の溝６が孔２の内周面に形成される。したがって、溝６
の一端は孔２の開口面に開放されているが他端は孔２の
途中で行き止まりとなり閉塞された状態である。In the bottomed material forming process, first, the metal material 1 is plastically deformed using a punch and die (not shown), and as shown in FIG. A bottomed material 3a is formed. Furthermore, as shown in FIGS. 4 and 5, a sixth
As shown in FIGS. 7 and 7, a plurality of grooves 6 corresponding to the protrusions 4 are formed on the inner peripheral surface of the hole 2. Therefore, groove 6
One end is open to the opening surface of the hole 2, but the other end is a dead end in the middle of the hole 2 and is in a closed state.
筒状素材形成工程においては、第８図に示すように、孔
２の内径に一致する外径のパンチ７ａを孔２に貫通させ
て有底素材３ａの底面を剪断して筒状素材３を形成する
。In the cylindrical material forming step, as shown in FIG. 8, a punch 7a having an outer diameter matching the inner diameter of the hole 2 is passed through the hole 2 to shear the bottom surface of the bottomed material 3a to form the cylindrical material 3. Form.
局部加熱工程においては、第９図に示すように。In the local heating step, as shown in FIG.
筒状素材３の溝６の開放端側の端部を一端から一定長さ
の範囲ａにわたり高周波加熱する。The open end side of the groove 6 of the cylindrical material 3 is subjected to high frequency heating over a certain length range a from one end.
そして、第１０図に示すように、成形型７のダイス８に
筒状素材３を嵌合する。すなわち、このダイス８には筒
状素材３の外径に一致する筒状孔９が形成されている。Then, as shown in FIG. 10, the cylindrical material 3 is fitted into the die 8 of the mold 7. That is, this die 8 is formed with a cylindrical hole 9 that matches the outer diameter of the cylindrical material 3.
また、成形型７は、筒状孔９に摺動自在に嵌合されたノ
ックアウト１０と、このノックアウト１ｏの一端に当接
する摺動自在のノックアウトピン１１と、ノックアウト
１０に摺動自在に表金されたカウンターパンチ１２と、
パンチ１３とを有している。カウンターパンチ１２の外
径は筒状素材３の孔２の内径と一致され。The mold 7 also includes a knockout 10 that is slidably fitted into the cylindrical hole 9, a slideable knockout pin 11 that abuts one end of the knockout 1o, and a cover plate that is slidably attached to the knockout 10. counter punch 12,
It has a punch 13. The outer diameter of the counter punch 12 matches the inner diameter of the hole 2 of the cylindrical material 3.
パンチ１３の外径は筒状孔９の内径に一致されている。The outer diameter of the punch 13 matches the inner diameter of the cylindrical hole 9.
そして、パンチ１３の端面には加圧面１４が形成されて
いる。したがって、成形工程においては、第１１図に示
すように、パンチ１３をダイス８の筒状孔９に嵌合し、
加圧面１４により筒状素材３の端面を押圧する。この抑
圧部分は局部加熱工程において加熱され、カウンターパ
ンチ１２は筒状素材３の下部の非加熱部とこの非加熱部
と加熱部との境界部付近まで孔２に嵌合されているため
、加熱部分が内方に変形されることによって環状突部１
５が形成され、この環状突部１５により溝６の上端部が
閉塞される。そして、外力を加えてノックアウトビン１
１を上方へ突き上げ、ノックアウト１０により筒状素材
３をダイス８から排出させる。排出された筒状素材３は
第１２図に示す通りである。A pressing surface 14 is formed on the end surface of the punch 13. Therefore, in the forming process, as shown in FIG. 11, the punch 13 is fitted into the cylindrical hole 9 of the die 8,
The end face of the cylindrical material 3 is pressed by the pressing surface 14 . This suppressed portion is heated in the local heating step, and the counter punch 12 is fitted into the hole 2 up to the lower non-heated portion of the cylindrical material 3 and the boundary between this non-heated portion and the heated portion, so that the counter punch 12 is heated. The annular protrusion 1 is formed by deforming the part inward.
5 is formed, and the upper end of the groove 6 is closed by this annular protrusion 15. Then, by applying an external force, the knockout bin 1 is
1 is pushed upward, and the cylindrical material 3 is ejected from the die 8 by the knockout 10. The discharged cylindrical material 3 is as shown in FIG.
内面仕上げ工程においては、第１３図及び第１４図に示
すように、孔２の軸心から溝６の底面までの半径より小
さな半径をもって孔２の内周面及び環状突部１５を切削
する。これにより、溝・Ｓの縁をエツジ状に維持した弁
スリーブ１６を形成することができる。In the inner surface finishing process, as shown in FIGS. 13 and 14, the inner circumferential surface of the hole 2 and the annular protrusion 15 are cut with a radius smaller than the radius from the axis of the hole 2 to the bottom surface of the groove 6. Thereby, the valve sleeve 16 can be formed in which the edges of the grooves S are maintained in an edge shape.
発明の効果
この発明は上述のように構成したので、有底素材形成工
程においては一端が開放され他端が閉塞された複数の溝
を一度に能率的に形成することができ、筒状素材形成工
程においては有底素材の底部を開口し、局部加熱工程に
おいては筒状素材の開口面側を加熱して変形し易くする
ことができ、成形工程においては筒状素材の高周波加熱
された局部を内方に変形させて環状突部を形成して溝の
開放端を閉塞し、内面仕上げ工程においては筒状素材の
内周面を切削又は研磨することにより溝の縁をエツジ状
に仕上げることができ、さらに、加工時間を短縮するこ
とができる等の効果を有する。Effects of the Invention Since the present invention is configured as described above, a plurality of grooves with one end open and the other end closed can be efficiently formed at the same time in the bottomed material forming process, and a cylindrical material can be formed. In the process, the bottom of the bottomed material is opened, and in the local heating process, the open side of the cylindrical material is heated to make it easier to deform.In the forming process, the high-frequency heated local part of the cylindrical material is heated. The open end of the groove is closed by deforming it inward to form an annular protrusion, and in the internal finishing process, the edge of the groove can be finished into an edge shape by cutting or polishing the inner peripheral surface of the cylindrical material. Furthermore, it has effects such as being able to shorten processing time.
図面はこの発明の一実施例を示すもので、第１図は工程
図、牽２図は円柱形の金属材を示す側面図、第３図は溝
形成前の有底素材を示す縦断側面図、第４図は冷間鍛造
に使用するパンチの側面図、第５図はその端面図、第６
図は溝が形成された筒状素材を示す縦断側面図、第７図
はその端面図、第８図は筒状素材を示す縦断側面図、第
９図は筒状素材の加熱範囲を示す縦断側面図、第１０図
は成形型の縦断側面図、第１１図は成形型及び筒状素材
の縦断側面図、第１２図は成形工程を経た筒状素材の縦
断側面図、第１３図は弁スリーブを示す縦断側面図、第
１４図は第１３図におけるＡ−Ａ線部の断面図である。
２・・・孔、３ａ・・・有底素材、３・・・筒状素材、
６・・・溝、１５・・・環状突部
一篤Ｚ図 ３ａ図
３７図
、￥）、ＩＺ図
Ｚ
３皿昆
１）３図The drawings show one embodiment of the present invention; Fig. 1 is a process diagram, Fig. 2 is a side view showing a cylindrical metal material, and Fig. 3 is a vertical sectional side view showing a bottomed material before grooves are formed. , Figure 4 is a side view of the punch used for cold forging, Figure 5 is its end view, and Figure 6 is its end view.
The figure is a longitudinal side view showing a cylindrical material with grooves formed therein, Fig. 7 is an end view thereof, Fig. 8 is a longitudinal side view showing the cylindrical material, and Fig. 9 is a longitudinal cross-sectional view showing the heating range of the cylindrical material. 10 is a vertical side view of the mold, FIG. 11 is a vertical side view of the mold and the cylindrical material, FIG. 12 is a vertical side view of the cylindrical material after the molding process, and FIG. 13 is the valve. FIG. 14 is a longitudinal side view showing the sleeve, and is a sectional view taken along line A-A in FIG. 13. 2... Hole, 3a... Bottomed material, 3... Cylindrical material,
6...Groove, 15...Annular protrusion Itsu Z diagram 3a figure 37 figure, ¥), IZ figure Z 3 plates 1) 3 figure
Claims (1)
この孔の開口面側の一端が開放され他端が閉塞された複
数の溝とを有する有底素材を冷間鍛造により形成する有
底素材形成工程と、 前記有底素材の底部を除去して筒状素材を形成する筒状
素材形成工程と、 前記溝の開放側の前記筒状素材の端部を一端から一定長
さの範囲にわたり高周波加熱する局部加熱工程と、 前記筒状素材の高周波加熱された局部を内方に変形させ
て環状突部を形成する成形工程と、前記筒状素材の内周
面を切削又は研磨により仕上げる内面仕上げ工程とより
なることを特徴とする弁スリーブ製造方法。[Scope of Claims] A bottomed hole having a hole opening on one side and a plurality of grooves extending along the inner peripheral surface of the hole in the axial direction and having one end open on the opening side of the hole and closed at the other end. a bottomed material forming step of forming the material by cold forging; a cylindrical material forming step of removing the bottom of the bottomed material to form a cylindrical material; and an end of the cylindrical material on the open side of the groove. a local heating step of high-frequency heating the part over a certain length range from one end; a forming step of forming an annular protrusion by deforming the high-frequency heated local part of the cylindrical material inwardly; A method for manufacturing a valve sleeve, comprising an inner surface finishing step of finishing the inner peripheral surface by cutting or polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10079987A JPS63264236A (en) | 1987-04-23 | 1987-04-23 | Manufacture of valve sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10079987A JPS63264236A (en) | 1987-04-23 | 1987-04-23 | Manufacture of valve sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63264236A true JPS63264236A (en) | 1988-11-01 |
| JPH0575494B2 JPH0575494B2 (en) | 1993-10-20 |
Family
ID=14283448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10079987A Granted JPS63264236A (en) | 1987-04-23 | 1987-04-23 | Manufacture of valve sleeve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63264236A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03176275A (en) * | 1989-12-04 | 1991-07-31 | Nippon Seiko Kk | Valve sleeve and its manufacture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5973141A (en) * | 1982-10-18 | 1984-04-25 | Toyota Motor Corp | Production of valve body |
| JPS60210339A (en) * | 1984-04-05 | 1985-10-22 | Jidosha Kiki Co Ltd | Production of valve sleeve |
| JPS60213331A (en) * | 1984-04-05 | 1985-10-25 | Jidosha Kiki Co Ltd | Production of valve sleeve |
-
1987
- 1987-04-23 JP JP10079987A patent/JPS63264236A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5973141A (en) * | 1982-10-18 | 1984-04-25 | Toyota Motor Corp | Production of valve body |
| JPS60210339A (en) * | 1984-04-05 | 1985-10-22 | Jidosha Kiki Co Ltd | Production of valve sleeve |
| JPS60213331A (en) * | 1984-04-05 | 1985-10-25 | Jidosha Kiki Co Ltd | Production of valve sleeve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03176275A (en) * | 1989-12-04 | 1991-07-31 | Nippon Seiko Kk | Valve sleeve and its manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0575494B2 (en) | 1993-10-20 |
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