JPH0228405B2 - - Google Patents
Info
- Publication number
- JPH0228405B2 JPH0228405B2 JP57083596A JP8359682A JPH0228405B2 JP H0228405 B2 JPH0228405 B2 JP H0228405B2 JP 57083596 A JP57083596 A JP 57083596A JP 8359682 A JP8359682 A JP 8359682A JP H0228405 B2 JPH0228405 B2 JP H0228405B2
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- valve
- forged material
- outer periphery
- vertical grooves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000010273 cold forging Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000003672 processing method Methods 0.000 description 6
- 238000005242 forging Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/12—Forming profiles on internal or external surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
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
バルブとして用いられるロータリバルブとその加
工方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary valve mainly used as a control valve of a power steering device and a method of manufacturing the rotary valve.
一般にロータリバルブは、第１図に示すように
スリーブ１とバルブロータ２とから構成され、ロ
ータ２の回転により、スリーブ１の内周に設けた
縦溝（グループ）３Ａ，３Ｂ…と、ロータ２の外
周に設けた縦溝４Ａ，４Ｂ…の対向関係により、
油路を切換えるようになつている。 In general, a rotary valve is composed of a sleeve 1 and a valve rotor 2, as shown in FIG. Due to the opposing relationship of the vertical grooves 4A, 4B... provided on the outer periphery of the
It is designed to switch the oil path.
これらの縦溝３Ａ，３Ｂ…，４Ａ，４Ｂ…は、
油路を形成するため、それぞれの両端は閉じてい
るので、加工が困難である。 These vertical grooves 3A, 3B..., 4A, 4B...
Since each end is closed to form an oil passage, machining is difficult.
しかし、縦溝４Ａ，４Ｂ…のように、バルブロ
ータ２なる軸体の外周に設けられたものは、第２
図Ａに示すように、フライス加工あるいは転造加
工により比較的容易に行なえるのは周知である。 However, the vertical grooves 4A, 4B, etc., which are provided on the outer periphery of the shaft body that is the valve rotor 2, are
As shown in Figure A, it is well known that this can be done relatively easily by milling or rolling.
ところで、縦溝３Ａ，３Ｂ…のようにスリーブ
１の内周に設けられたものは、従来、第２図Ｂに
示すように、内孔５Ａおよびランド５Ｂ，５Ｂの
内径ｄおよびＤをレース加工したのち、縦溝３
Ａ，３Ｂ…をブローチ加工により成形し、最後に
ランド５Ｂ，５Ｂにカラー５Ｃ，５Ｃを嵌合して
いる。これは多くの加工工数を要するので、これ
を解決するため本出願人は特開昭58−41644号で
塑性加工による方法を提案している。 By the way, the vertical grooves 3A, 3B, . After that, vertical groove 3
A, 3B, . . . are formed by broaching, and finally, collars 5C, 5C are fitted to lands 5B, 5B. Since this requires a large number of processing steps, in order to solve this problem, the present applicant proposed a method using plastic working in Japanese Patent Laid-Open No. 58-41644.
それを第３図および第４図について説明する
と、スリーブ１の縦溝３Ａ，３Ｂ…に対応した突
起７Ａ，７Ｂ…を上型８の外周の軸方向に延びる
ように設け、上型８、下型９の間に鍛造素材１０
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鍛造を行つて、スリーブ１の
半加工材１Ａを形成し、次いで突起７Ａ，７Ｂ…
により形成された縦溝３Ａ，３Ｂの開口端１１を
密封するカラー１２をスリーブ１の端部に嵌合す
ることを特徴としている。 To explain this with reference to FIGS. 3 and 4, protrusions 7A, 7B...corresponding to the vertical grooves 3A, 3B... of the sleeve 1 are provided to extend in the axial direction on the outer periphery of the upper mold 8, and the upper mold 8, the lower mold Forged material 10 between die 9
is filled and cold forged by stroking from the valve axis direction using a forging press to form the semi-finished material 1A of the sleeve 1, and then the protrusions 7A, 7B...
The sleeve 1 is characterized in that a collar 12 that seals the open ends 11 of the vertical grooves 3A and 3B formed by the sleeve 1 is fitted onto the end of the sleeve 1.
しかし、この方法も開口端１１の加工、別部品
であるカラー１２の加工およびカラー１２の開口
端１１への嵌合を要し加工工数が多く、その結果
コスト高を招いている。 However, this method also requires machining of the open end 11, machining of the collar 12 which is a separate component, and fitting of the collar 12 to the open end 11, resulting in a large number of machining steps, resulting in high costs.
本発明は上記従来の問題点を解消することを目
的としている。 The present invention aims to solve the above-mentioned conventional problems.
このために本発明では、まず、外周にバルブス
リーブ内周に形成する縦溝に対応した突起を傾斜
して設けると共に内周に上端部に向けて末広がり
の斜面部を形成した分割成形型を用意し、これを
中空鍛造素材の内周に挿入し、円錐状のハンマを
バルブスリーブ軸方向からストロークさせて、前
記分割成形型の基端を支点として他端を押し拡げ
て、前記突起により中空鍛造素材の内周面に冷間
鍛造を行つて縦溝を形成する。そして、次に中空
鍛造素材の外周に円周溝を切削加工してバルブス
リーブを形成するのである。 For this purpose, in the present invention, first, a split mold is prepared, in which a protrusion corresponding to the vertical groove formed on the inner circumference of the valve sleeve is provided at an angle on the outer periphery, and a sloped part that widens toward the upper end is formed on the inner periphery. Then, this is inserted into the inner periphery of the hollow forged material, and a conical hammer is stroked from the axial direction of the valve sleeve, and the other end is pushed out using the base end of the split mold as a fulcrum, and the hollow forged material is formed by the protrusion. Cold forging is performed on the inner peripheral surface of the material to form vertical grooves. Then, a circumferential groove is cut on the outer periphery of the hollow forged material to form a valve sleeve.
以下、この発明の実施例を図面にもとづいて説
明する。 Embodiments of the present invention will be described below based on the drawings.
第４図Ａにおいて、１３は中空状の鍛造粗材で
あつて、その内、外径は仕上代を残してレース加
工されている。１４Ａ，１４Ｂ…は分割成形型で
あつて下型１５の凹部に嵌つて載置され、鍛造粗
材１３にこの実施例の場合は下方から挿通され
る。この分割成形型１４Ａ，１４Ｂの外周には、
スリーブ１の縦溝３Ａ，３Ｂ…に対応する突起１
６Ａ，１６Ｂ…が設けられるとともに、内周は斜
面部１７Ａ，１７Ｂ…に形成されている。なお、
１８は図示しない鍛造プレスの截頭直円錐状のハ
ンマーであつて、鍛造完了時には第４図Ｂに示す
ように、分割成形型１４Ａ，１４Ｂ…の斜面部１
７Ａ，１７Ｂに全面的に係合するようになつてい
る。 In FIG. 4A, reference numeral 13 is a hollow forged rough material, the inner and outer diameters of which are lathed leaving a finishing allowance. 14A, 14B, . . . are split molds that are fitted into the recesses of the lower mold 15 and placed, and inserted into the forged raw material 13 from below in this embodiment. On the outer periphery of these split molds 14A, 14B,
Protrusions 1 corresponding to longitudinal grooves 3A, 3B... of sleeve 1
6A, 16B... are provided, and the inner periphery is formed into sloped parts 17A, 17B.... In addition,
Reference numeral 18 is a truncated conical hammer of a forging press (not shown), and when forging is completed, as shown in FIG.
7A and 17B.
次に、加工工程を説明する。 Next, the processing steps will be explained.
先ず、スリーブ１の内、外径仕上代を残した鍛
造粗材１３を加工し、それを下型１５にセツトさ
れた分割成形型１４Ａ，１４Ｂ…に挿嵌する。 First, the forged rough material 13 of the sleeve 1 with a finishing allowance left on the inner and outer diameters is processed, and then inserted into the split molds 14A, 14B, . . . set in the lower mold 15.
次いで、鍛造プレスにより、ハンマー１８を矢
印のようにバルブ軸方向にストロークし、ハンマ
ー１８の斜面部１９を分割成形型１４Ａ，１４Ｂ
…の上端より次第に斜面部１７Ａ，１７Ｂ…に沿
うように押し込む。すると、分割成形型１４Ａ，
１４Ｂ…はその下端を支点として上端が外方に押
し拡げられ、第４図Ｂに示すように、斜面部１７
Ａ，１７Ｂ…がハンマー１８の斜面部１９に係合
し、その結果、中空状の鍛造粗材１３の内周に
は、突起１６Ａ，１６Ｂ…により縦溝３Ａ，３Ｂ
…が一挙に成形される。なお、このとき、鍛造粗
材１３の外周には、分割成形型１４Ａ，１４Ｂ…
の突起１６Ａ，１６Ｂ…による膨出部２０Ａ，２
０Ｂ…が形成される。最後に、鍛造の完了した鍛
造粗材１３の内、外径を仕上げ、このとき、膨出
部２０を除去して、加工を完了する。なお、縦溝
３Ａ，３Ｂ…のチヤンバも同時に加工できること
は当然である。 Next, by using a forging press, the hammer 18 is stroked in the direction of the valve axis as shown by the arrow, and the slope portion 19 of the hammer 18 is inserted into the divided molds 14A and 14B.
. . . From the upper end, gradually push in along the slope portions 17A, 17B . . . . Then, the split mold 14A,
14B... has its lower end used as a fulcrum and its upper end is pushed outward, and as shown in FIG. 4B, the slope portion 17
A, 17B... engage with the slope part 19 of the hammer 18, and as a result, vertical grooves 3A, 3B are formed on the inner periphery of the hollow forged raw material 13 by the protrusions 16A, 16B...
... are formed all at once. In addition, at this time, on the outer periphery of the forged raw material 13, split molds 14A, 14B...
The bulges 20A, 2 due to the protrusions 16A, 16B...
0B... is formed. Finally, the inner and outer diameters of the forged rough material 13 that have been forged are finished, and at this time, the bulging portion 20 is removed to complete the processing. Note that it is a matter of course that the chambers of the vertical grooves 3A, 3B, . . . can also be processed at the same time.
このように本発明によれば、縦溝を有するバル
ブスリーブを切削加工を要することなく、塑性加
工のみで一体成形できるので、加工方法として極
めて簡潔であつて加工工数及びコストを大幅に低
減できるという効果が得られる。 As described above, according to the present invention, a valve sleeve having vertical grooves can be integrally formed by only plastic working without cutting, so the processing method is extremely simple and the processing man-hours and cost can be significantly reduced. Effects can be obtained.
第５図は本発明の加工によつて得られたスリー
ブ１と、周知の塑性加工により縦溝４Ａ，４Ｂ…
を一体成形したバルブロータ２を組合せてなるロ
ータリバルブである。 FIG. 5 shows the sleeve 1 obtained by the processing of the present invention and the longitudinal grooves 4A, 4B, .
This is a rotary valve that combines a valve rotor 2 which is integrally molded with a valve rotor 2.
第６図は本発明の他の実施例を示すもので、こ
れは、本発明の加工によつて得られたスリーブ１
と、周知の塑性加工により縦溝４Ａ，４Ｂ…を成
形し、開口端２１をカラー２２により閉じたバル
ブロータ２を組合せてなるロータリバルブであ
る。 FIG. 6 shows another embodiment of the present invention, which shows a sleeve 1 obtained by the processing of the present invention.
This rotary valve is constructed by combining a valve rotor 2 with vertical grooves 4A, 4B, .
第１図はロータリバルブの形状を示す断面図、
第２図Ａはバルブロータの従来の加工方法を示す
断面図、第２図Ｂはスリーブの従来の加工方法を
示す断面図、第３図ＡおよびＢはスリーブの従来
の他の加工方法を示す断面図、第４図ＡおよびＢ
はスリーブに適用した本発明の加工方法の実施例
を示す断面図、第５図と第６図はそれぞれ本発明
の加工方法によるロータリバルブの実施例を示す
断面図である。
１……スリーブ、２……バルブロータ、３Ａ，
３Ｂ……スリーブの縦溝、４Ａ，４Ｂ……バルブ
ロータの縦溝、１３……鍛造粗材、１４Ａ，１４
Ｂ……分割成形型、１６Ａ，１６Ｂ……突起、１
７Ａ，１７Ｂ……斜面部、１８……ハンマー、１
９……ハンマーの斜面部、２０Ａ，２０Ｂ……膨
出部。
Figure 1 is a sectional view showing the shape of a rotary valve.
Fig. 2A is a sectional view showing a conventional processing method for a valve rotor, Fig. 2B is a sectional view showing a conventional processing method for a sleeve, and Figs. 3A and B show another conventional processing method for a sleeve. Cross section, Figure 4 A and B
5 is a sectional view showing an embodiment of the processing method of the present invention applied to a sleeve, and FIGS. 5 and 6 are sectional views each showing an embodiment of a rotary valve according to the processing method of the invention. 1...Sleeve, 2...Valve rotor, 3A,
3B... Vertical groove of sleeve, 4A, 4B... Vertical groove of valve rotor, 13... Forged rough material, 14A, 14
B...Divided mold, 16A, 16B...Protrusion, 1
7A, 17B...Slope part, 18...Hammer, 1
9... Slope portion of hammer, 20A, 20B... Swelling portion.
Claims (1)
に対応した突起を傾斜して設けると共に内周には
上端部に向けて末広がりの斜面部を形成した分割
成形型を、中空鍛造素材の内周に挿入し、円錐状
のハンマをバルブスリーブ軸方向からストローク
させて、前記分割成形型の基端を支点として他端
を押し拡げて、前記突起により中空鍛造素材の内
周面に冷間鍛造を行つて縦溝を形成し、次に中空
鍛造素材の外周に円周溝を切削加工してバルブス
リーブを形成することを特徴とするロータリバル
ブの加工方法。1. A split mold with inclined protrusions corresponding to the vertical grooves formed on the inner periphery of the valve sleeve on the outer periphery, and a sloping part that widens toward the upper end on the inner periphery, is installed on the inner periphery of the hollow forged material. The conical hammer is stroked from the axial direction of the valve sleeve to push and expand the other end using the proximal end of the split mold as a fulcrum, and the protrusion applies cold forging to the inner peripheral surface of the hollow forged material. A method for processing a rotary valve, which comprises: forming a vertical groove by cutting a hollow forged material, and then cutting a circumferential groove on the outer periphery of a hollow forged material to form a valve sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57083596A JPS58199637A (en) | 1982-05-18 | 1982-05-18 | Rotary valve and its working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57083596A JPS58199637A (en) | 1982-05-18 | 1982-05-18 | Rotary valve and its working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58199637A JPS58199637A (en) | 1983-11-21 |
| JPH0228405B2 true JPH0228405B2 (en) | 1990-06-25 |
Family
ID=13806869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57083596A Granted JPS58199637A (en) | 1982-05-18 | 1982-05-18 | Rotary valve and its working method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58199637A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11311929B2 (en) * | 2016-05-24 | 2022-04-26 | Cie Automotive, S.A. | Device for calibrating and lightening the weight of crankshafts |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641861Y2 (en) * | 1976-12-28 | 1981-09-30 |
-
1982
- 1982-05-18 JP JP57083596A patent/JPS58199637A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58199637A (en) | 1983-11-21 |
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