JPH01143303U - - Google Patents
Info
- Publication number
- JPH01143303U JPH01143303U JP3948788U JP3948788U JPH01143303U JP H01143303 U JPH01143303 U JP H01143303U JP 3948788 U JP3948788 U JP 3948788U JP 3948788 U JP3948788 U JP 3948788U JP H01143303 U JPH01143303 U JP H01143303U
- Authority
- JP
- Japan
- Prior art keywords
- check valve
- chuck
- pilot check
- pilot
- pressure
- 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
- 239000012530 fluid Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Gripping On Spindles (AREA)
- Check Valves (AREA)
Description
第１図はチヤツク用流体圧シリンダの断面正面
図、第２図は本考案の実施例のパイロツト逆止弁
の説明図、第３図は同じく別の実施例を示す説明
図、第４図ａは従来の問題点を示す油圧回路図、
ｂは従来のパイロツト逆止弁の説明図、第５図は
従来の解決策の油圧回路図である。
Ｃ……チヤツク用流体圧シリンダ、Ａ，Ｂ……
油室、１……主軸、４……シリンダ、５……ピス
トン、８……固定部、１１……ロータリーバルブ
、１４，１６……パイロツト逆止弁、１８……ボ
ール弁、１９……バネ、２０……ピストン。
Fig. 1 is a cross-sectional front view of the fluid pressure cylinder for chuck, Fig. 2 is an explanatory diagram of a pilot check valve according to an embodiment of the present invention, Fig. 3 is an explanatory diagram showing another embodiment, and Fig. 4 a. is a hydraulic circuit diagram showing conventional problems,
b is an explanatory diagram of a conventional pilot check valve, and FIG. 5 is a hydraulic circuit diagram of a conventional solution. C...Fluid pressure cylinder for chuck, A, B...
Oil chamber, 1...Main shaft, 4...Cylinder, 5...Piston, 8...Fixed part, 11...Rotary valve, 14, 16...Pilot check valve, 18...Ball valve, 19...Spring , 20...piston.
Claims (1)
ツク用流体圧シリンダに組込まれたパイロツト逆
止弁において、ボール弁を閉弁方向に付勢するバ
ネに対抗して、パイロツト圧の供給時前記ボール
弁の偏心位置を押圧する楔状の先端を形成したピ
ストンを設けたことを特徴とするパイロツト逆止
弁。 In a pilot check valve built into a chuck fluid pressure cylinder that switches the gripping pressure of the chuck into two stages, high and low, when the pilot pressure is supplied, the ball is A pilot check valve characterized by being provided with a piston having a wedge-shaped tip that presses an eccentric position of the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3948788U JPH01143303U (en) | 1988-03-25 | 1988-03-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3948788U JPH01143303U (en) | 1988-03-25 | 1988-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01143303U true JPH01143303U (en) | 1989-10-02 |
Family
ID=31265989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3948788U Pending JPH01143303U (en) | 1988-03-25 | 1988-03-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01143303U (en) |
-
1988
- 1988-03-25 JP JP3948788U patent/JPH01143303U/ja active Pending