JPS5841644A - Working method of rotary valve - Google Patents
Working method of rotary valveInfo
- Publication number
- JPS5841644A JPS5841644A JP14067681A JP14067681A JPS5841644A JP S5841644 A JPS5841644 A JP S5841644A JP 14067681 A JP14067681 A JP 14067681A JP 14067681 A JP14067681 A JP 14067681A JP S5841644 A JPS5841644 A JP S5841644A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- valve
- forging
- rotary valve
- rotor
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/20—Making machine elements valve parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Power Steering Mechanism (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は主として動力舵取装置のコントロールパルプと
して用いられるロータリバルブの加工方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for processing rotary valves mainly used as control pulp for power steering devices.
一般にロータリパルプは、第１図に示すように溝（グル
ープ） ３ Ａ 、 ３ Ｂ−・−・と、ロータ２の外
周に設けた縦溝４ Ａ 、 ４ Ｂ ・・・・・・との
連通度を選択して、作動油の切換えを行うものである。In general, rotary pulp has communication between grooves (groups) 3 A, 3 B, etc. and vertical grooves 4 A, 4 B, etc. provided on the outer periphery of the rotor 2, as shown in FIG. The hydraulic oil is switched by selecting the temperature.
このようなロータリバルブを機械加工により形成するに
は、例えばスリーブｌについては、第２図（５）のよう
に、円筒部材５に内径ｄの貫通孔５Ａと、内径りの段差
孔５Ｂ’４例えば、旋盤加工で形成し、数条の縦溝５Ｃ
をブローチ引抜加工により同時成形し、最後に両端の段
差孔５ＢＫ回径のカラー５Ｅｙそれぞれ嵌めて、縦溝５
Ｃの端部な密封する。In order to form such a rotary valve by machining, for example, for the sleeve l, as shown in FIG. For example, it is formed by lathe processing and has several vertical grooves 5C.
are formed at the same time by broach drawing, and finally, the collars 5Ey with the diameter of step holes 5BK at both ends are fitted, and the vertical grooves 5
Seal the end of C.
また、パルプロータ２に関しては、第２図００ように、
円筒材又は円柱材６の外周面に、フライス加工などによ
り、１つ１つ縦？＃６人を溝切りして形成する。Regarding the pulp rotor 2, as shown in Fig. 2 00,
The outer peripheral surface of the cylindrical material or columnar material 6 is cut vertically one by one by milling or the like. #6 Cut grooves and form.
このように、ロータリバルブの加工は、かなり手間のか
かるものモあり、加工時間、加工コストの土から多くの
問題をかかえている。As described above, the processing of rotary valves is quite labor-intensive and poses many problems, including processing time and processing costs.
本発明はかかる問題を解決することを目的とする。The present invention aims to solve this problem.
そのために本発明・は、鍛造用鋼な用いて冷間型鍛造に
Ｊ：リスリーブ、バルブロータの縦溝な軸方向から成型
加工し、次いで加工側の一端部にカラーを嵌めて、スリ
ーブやバルブロータを形成する □加工方法を提供する
。To this end, the present invention uses forging steel and performs cold die forging to form the vertical groove of the valve rotor in the axial direction, and then fits a collar on one end of the processed side to form the sleeve and valve. Form the rotor □Provide a processing method.
以下、本発明によりスリーブ及びバルブロータを加工す
る具体的方法を説明する。Hereinafter, a specific method of machining a sleeve and a valve rotor according to the present invention will be explained.
第３図（ト）、０勺はスリーブを形成する方法であり、
第３図い）の円筒形の下型ｌＯと、この内部に侵入する
円柱形の上型１１とを用意し、上型１１を軸方向から加
圧スライドさせて、図のように鍛造素材１５を成型する
。FIG.
Prepare a cylindrical lower die lO as shown in Fig. 3) and a cylindrical upper die 11 that enters the inside, and press and slide the upper die 11 from the axial direction to form the forging material 15 as shown in the figure. mold.
すなわち、下型１０はバルブスリーブ１の外径ＤＯに等
しい内径をもった直円柱状の穴部１０Ａが設けられ、こ
れに対して上型１１は、先端にスリーブ１の内径ｄに等
しい外径をもった小径軸部１１Ａが、また根元にこの小
径軸部１１Ａから拡径した、後述するカラー１２の外径
りと等しい大径軸部１１１］がそれぞれ形成してあり、
さらにこの大径軸部１１１３と小径軸部１１Ａとの段差
面から、所定の長さにわたり小径軸部１１Ａの外周に、
軸方向に延びる突起１１Ｃが設けられる。この突起１１
Ｃはスリーブ１の縦溝３Ａ、３１３−・・に相当１−る
巾と長さをもつ。That is, the lower die 10 is provided with a right cylindrical hole 10A having an inner diameter equal to the outer diameter DO of the valve sleeve 1, whereas the upper die 11 is provided with a hole 10A having an outer diameter equal to the inner diameter d of the sleeve 1 at its tip. A small-diameter shaft portion 11A with a diameter of 11A is formed at the base thereof, and a large-diameter shaft portion 111 whose diameter is expanded from the small-diameter shaft portion 11A and is equal to the outer diameter of a collar 12, which will be described later, is formed.
Further, from the step surface between the large diameter shaft portion 1113 and the small diameter shaft portion 11A, a predetermined length is applied to the outer periphery of the small diameter shaft portion 11A.
A projection 11C extending in the axial direction is provided. This protrusion 11
C has a width and length corresponding to the longitudinal grooves 3A, 313, etc. of the sleeve 1.
このような上型１１と下型 １０とにより、予め略円筒
形にした鍛造素材１５を下型１０に入れ、鍛造プレスに
より上型１１をストロークさせ、第３図（ハ）のような
円筒体１５Ａを冷鍛加工により形成する。Using such an upper die 11 and a lower die 10, a forged material 15 which has been made into a substantially cylindrical shape in advance is put into the lower die 10, and the upper die 11 is stroked by a forging press to form a cylindrical body as shown in FIG. 3(c). 15A is formed by cold forging.
そして、上部の環状溝１５１３にカラー１２を嵌合（圧
入）ｊると、スリーブｌが完成する。When the collar 12 is fitted (press-fitted) into the upper annular groove 1513, the sleeve l is completed.
この場合、スリーブ１の縦溝３Ａ、３Ｂ・・・について
は、上型１１をスリーブ１の軸力向上部から下降させ、
このとき突起１１Ｃが、小径軸部１１Ａの途中までしか
形成されてないので、上型１１が下型１０に密着した時
点で、スリーブ１の下端からｒＬＪだけ離れた位置で突
起１１Ｃの下端が止まり、したがって、スリーブ１に嵌
めるカラー１２は一方のみで済む。In this case, for the longitudinal grooves 3A, 3B, etc. of the sleeve 1, the upper die 11 is lowered from the axial force increasing part of the sleeve 1,
At this time, since the protrusion 11C is formed only halfway up the small diameter shaft portion 11A, the lower end of the protrusion 11C stops at a position rLJ away from the lower end of the sleeve 1 when the upper die 11 comes into close contact with the lower die 10. Therefore, only one collar 12 is required to be fitted into the sleeve 1.
次に、第４図（へ）、０はバルブロータ２を同じように
して冷鍛加工する場合を示し この場合は上記と逆に、
下型１０’の内周に縦溝用突起１６Ａ、及び大径穴１６
Ｂ、小径穴１６ｃを設けておき、上型１１’は単に円
柱状突部１７Ａを設けておいて鍛造プレス成型する。Next, in Fig. 4 (f), 0 shows the case where the valve rotor 2 is cold-forged in the same way, and in this case, contrary to the above,
A vertical groove projection 16A and a large diameter hole 16 are provided on the inner circumference of the lower die 10'.
B. A small diameter hole 16c is provided, and the upper mold 11' is simply provided with a cylindrical protrusion 17A, and then press-formed by forging.
そして、このときも、縦溝４Ａ、４Ｂ・・・は一方が開
口するので、ここにカラー１８を嵌合するのであシ、こ
のようにしてパルプロータ２を形成できる。Also at this time, since one side of the vertical grooves 4A, 4B, . . . is open, the collar 18 is fitted therein, and thus the pulp rotor 2 can be formed.
なお、第５図囚、０３）に示すように、冷鍛加工後、１
１ｍ２０．２１で示すように、スリーブｌの内周及びパ
ルプロータ２の外周を、テーノ１マ切削すれば、チーツ
ヤバルブも容易に形成することができる。上記において
冷鍛加工するための素材としては、例えば、構造用合金
鋼なども用いることができる。In addition, as shown in Figure 5, 03), after cold forging, 1
If the inner periphery of the sleeve l and the outer periphery of the pulp rotor 2 are cut by one millimeter, a cheat valve can be easily formed as shown by 1 m20.21. As the material for cold forging in the above, for example, structural alloy steel can be used.
以上のように本発明によれば、ロータリバルブの加工が
容易となシ、生産性が著しく向上してコストダウンがは
かれるという効果がある。As described above, according to the present invention, it is possible to easily process a rotary valve, significantly improve productivity, and reduce costs.
第１図は一般のロータリバルブの断面図、第２図■、（
功はそれぞれスリーブとパルプロータとの従来の加工方
法を示す断面図である。
第３図囚、（ロ）は本発明の方法をスリーブの加工に適
用した場合の断面図、第４図（４）、Φ）は同じくバル
ブロータの加工に適用した場合の断面図、第５図（Ａ）
、 （Ｂ）はスリーブとバルブロータをテーノｆ型パ
ルプにするときの説明図である。
ｌ・・・スＩＪ −フ、 ２・・・パルプロータ、１
０．１０’・・・下型、１１．１１’・・・上型、１２
・・・カラー、１５・・・鍛造素材、ＩＩｃ、１６Ａ・
・・突起。
特許出願人 萱場工業株代会社
語 ！ｎ＋
＼ｒ Ｎ）
）
↓■Figure 1 is a cross-sectional view of a general rotary valve, Figure 2
FIG. 3 is a cross-sectional view showing a conventional processing method for a sleeve and a pulp rotor, respectively. Figures 3 and (b) are cross-sectional views when the method of the present invention is applied to machining sleeves, Figure 4 (4) and Φ) are cross-sectional views when the method of the present invention is also applied to machining valve rotors, and Figure 5 Diagram (A)
, (B) is an explanatory diagram when the sleeve and valve rotor are made of Teno F type pulp. l...S IJ-F, 2...Pulp rotor, 1
0.10'...lower mold, 11.11'...upper mold, 12
...Color, 15...Forged material, IIc, 16A.
··protrusion. Patent applicant: Kayaba Kogyo Co., Ltd. n+ \r N) ) ↓■
Claims (1)
上型もしくは下型の内周または外周の軸方向に延びるよ
うに設け、上型、下型の間に鍛造素材を充填して鍛造プ
レスによりバルブ軸方向からストロークさせて冷間型鍛
造を行い、次いで突起により形成された縦溝の開口端を
密封するカラーをパルプルー夕またはスリーブの端部に
嵌合することを特徴とするロータリバルブの加工方法。A protrusion corresponding to the longitudinal groove of the pulp or sleeve,
It is provided so as to extend in the axial direction of the inner or outer periphery of the upper or lower mold, and the forging material is filled between the upper and lower molds, and the forging press is used to stroke the valve from the axial direction to perform cold die forging. A method for processing a rotary valve, comprising: then fitting a collar that seals the open end of the vertical groove formed by the protrusion onto the end of the pulp luer or sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14067681A JPS5841644A (en) | 1981-09-07 | 1981-09-07 | Working method of rotary valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14067681A JPS5841644A (en) | 1981-09-07 | 1981-09-07 | Working method of rotary valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5841644A true JPS5841644A (en) | 1983-03-10 |
Family
ID=15274159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14067681A Pending JPS5841644A (en) | 1981-09-07 | 1981-09-07 | Working method of rotary valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5841644A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2552348A1 (en) * | 1983-09-23 | 1985-03-29 | Trw Cam Gears Ltd | Method of forming valve sleeve |
| DE3705426A1 (en) * | 1986-02-24 | 1987-08-27 | Tokai Trw & Co | METHOD FOR PRODUCING A ONE-PIECE VALVE SLEEVE |
| EP0352518A2 (en) * | 1988-07-25 | 1990-01-31 | TOKAI TRW & CO., LTD. | Method of manufacturing a single-piece valve sleeve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55119565A (en) * | 1979-03-05 | 1980-09-13 | Kayaba Ind Co Ltd | Rotary valve |
-
1981
- 1981-09-07 JP JP14067681A patent/JPS5841644A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55119565A (en) * | 1979-03-05 | 1980-09-13 | Kayaba Ind Co Ltd | Rotary valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2552348A1 (en) * | 1983-09-23 | 1985-03-29 | Trw Cam Gears Ltd | Method of forming valve sleeve |
| DE3705426A1 (en) * | 1986-02-24 | 1987-08-27 | Tokai Trw & Co | METHOD FOR PRODUCING A ONE-PIECE VALVE SLEEVE |
| EP0352518A2 (en) * | 1988-07-25 | 1990-01-31 | TOKAI TRW & CO., LTD. | Method of manufacturing a single-piece valve sleeve |
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