CN201862880U - Electrical discharge machining fixture for square holes of valve bushes in electro-hydraulic servo valves - Google Patents
Electrical discharge machining fixture for square holes of valve bushes in electro-hydraulic servo valves Download PDFInfo
- Publication number
- CN201862880U CN201862880U CN2010205962397U CN201020596239U CN201862880U CN 201862880 U CN201862880 U CN 201862880U CN 2010205962397 U CN2010205962397 U CN 2010205962397U CN 201020596239 U CN201020596239 U CN 201020596239U CN 201862880 U CN201862880 U CN 201862880U
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- valve pocket
- hole
- matrix
- inner chamber
- valve
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Abstract
The utility model relates to an electrical discharge machining fixture for square holes of valve bushes in electro-hydraulic servo valves. The electrical discharge machining fixture comprises a valve bush substrate (1), a first positioning shaft (2), a second positioning shaft (3) and a tightening nut (4), the valve bush substrate (1) is a hollow column, a valve bush (5) can freely penetrate through the hollow column, a long and narrow perforated hole (13) which is perpendicular to an axis of an inner cavity (10) of the valve bush substrate (1) and communicated with the inner cavity (10) is arranged in the middle of the outer wall of the valve bush substrate (1), the valve bush (5) is sleeved on a front-section shaft of a shaft lever (21) of the first positioning shaft (2), one end of the valve bush (5) is abutted onto a step surface (210) of the shaft lever (21), the second positioning shaft (3) is inserted in the inner cavity (10) from the other side (12) of the valve bush substrate (1), a front-section shaft of the second positioning shaft (3) is inserted in a through hole (50) of the valve bush (5), and a step surface of the second positioning shaft (3) is abutted to the other end of the valve bush (5). The electrical discharge machining fixture is fine in operability, high in positioning precision, fine in repeatability and long in service life.
Description
Technical field
The utility model relates to a kind of clamping tool for machine work of accurate finding, particularly relates to the electrical spark working clamping apparatus of the square hole of valve pocket in a kind of electrohydraulic servo valve.
Background technology
Electrohydraulic servo valve has experienced 50 years in the development of international professional domain, and the occasion of application also more and more widely.Yet the research of servo valve also is in a relatively backward state at home, particularly the machining manufacture view of strength member is more outstanding, difficulty of processing with housing square edged orifice is comparatively obvious again among numerous parts, and there is following defective in present domestic like product machining:
Earlier cut out profile, stay a small amount of surplus, grind at last and guarantee designing requirement (as four sides or two coplane degrees, fineness), mainly finish by manpower by the line cutting.Roughing (line cutting) coplane degree instability, fineness are poor, and four corner angle circularity big (radius that is equivalent to the line cutting approximately), need the research mill to revise, and bring very burden for fine finishining (grinding).Characteristics: workload strengthens, and must cause inefficiency, processing cost increase, output to reduce, and can not satisfy the existing market demand.
Summary of the invention
Technical problem to be solved in the utility model provides that a kind of operability is good, positioning accuracy is high, the electrical spark working clamping apparatus of the square hole of valve pocket in the required electrohydraulic servo valve in the valve pocket mechanical processing process of good reproducibility, long service life.
The technical scheme that its technical problem that solves the utility model adopts is: the electrical spark working clamping apparatus that the square hole of valve pocket in a kind of electrohydraulic servo valve is provided, described valve pocket contains axially extending bore, described anchor clamps comprise the valve pocket matrix, first locating shaft, second locating shaft and one is pieced together jack panel, described valve pocket matrix is that inner chamber can make the freely through hollow cylinder of valve pocket, one side of this inner chamber one-level shoulder hole that segmentum laterale is big for medial segment is little, also big and this segmentum laterale is the one-level shoulder hole of screwed hole to the opposite side of this inner chamber for the little segmentum laterale of medial segment, the outer wall of described valve pocket matrix middle part offer one with its inner chamber axis normal and the long and narrow perforation that is communicated with inner chamber, the length of described long and narrow perforation is greater than the spacing distance of some square holes on the valve pocket;
The head of described first locating shaft has terminal pad, its axostylus axostyle is the through-hole diameter coupling of leading portion shaft diameter and valve pocket and the back segment shaft diameter one-level stairstepping greater than the valve pocket external diameter, and its axostylus axostyle its head terminal pad in the inner chamber that inserts valve pocket matrix one side is fixed on the step surface of valve pocket matrix inner chamber;
Through-hole diameter that described second locating shaft is leading portion shaft diameter and valve pocket coupling and back segment shaft diameter are greater than the one-level stairstepping of valve pocket external diameter;
Described assembly jack panel can spin with the screwed hole of valve pocket matrix, put into the inner chamber of valve pocket matrix and be enclosed within the axostylus axostyle leading portion axle of first locating shaft at valve pocket, only be against on the step surface of axostylus axostyle up to valve pocket one end, second locating shaft inserts the inner chamber of valve pocket matrix and its leading portion axle inserts in the through hole of valve pocket when its step surface only is against the other end of valve pocket from the opposite side of valve pocket matrix, and the screwed hole of described assembly jack panel and valve pocket matrix spins and replaces rear end at second locating shaft.
Described positioning fixture comprises the alignment pin that radially is located at valve pocket matrix middle part and the pin-and-hole vertical with long and narrow perforation and inserts described pin-and-hole, also comprises a location device.
Beneficial effect
Adopted the electrical spark working clamping apparatus of the square hole of valve pocket in the electrohydraulic servo valve of the present invention, convenient mounting and clamping, simple wherein, resetting and rotating accuracy height are convenient to automation, and efficient height, cost are low.The housing square edged orifice of being processed is correct, and high conformity has improved working (machining) efficiency greatly, has reduced the requirement to workman's technical merit
Description of drawings
Fig. 1 is the structural representation of valve pocket;
Fig. 2 does not clamp the profile of valve pocket for the electrical spark working clamping apparatus of the square hole of valve pocket in the electrohydraulic servo valve of the present invention;
Fig. 3 is the profile of spark machined clamp clamps valve pocket of the square hole of valve pocket in the electrohydraulic servo valve of the present invention.
Among the figure: 1-valve pocket matrix, 2-first locating shaft, 3-second locating shaft, 4-piece together jack panel, 5-valve pocket,
10-inner chamber, the long and narrow perforation of 13-, 120-screwed hole, 20-head, 21-axostylus axostyle, 210-step surface, 50-through hole
The specific embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
As shown in Figure 1, the electrical spark working clamping apparatus of the square hole of valve pocket in a kind of electrohydraulic servo valve, described valve pocket 5 contain axially extending bore 50, radially be arranged on location taper hole 53 in the valve pocket, with valve pocket main shaft symmetry and radially that be provided with and a prescription hole 51,52 that be communicated with axially extending bore 50.Because the quality of the square hole crudy of valve pocket 5 is the quality of the properties of product of the whole electrohydraulic servo valve of influence directly, the required precision that is exactly square hole in addition is than higher, difficulty of processing is very big, therefore just very high to the requirement of the processing method of square hole and machining tool, that is to say that electric spark is worn the requirement of square hole anchor clamps itself is very high.
As Fig. 2, shown in 3, the electrical spark working clamping apparatus of the square hole of valve pocket comprises valve pocket matrix 1 in the described electrohydraulic servo valve, first locating shaft 2, second locating shaft 3 and one is pieced together jack panel 4, wherein, described valve pocket matrix 1 can make valve pocket 5 freely through hollow cylinders for inner chamber, one side 11 of this inner chamber 10 is the big one-level shoulder hole of the little segmentum laterale of medial segment, also big and this segmentum laterale is the one-level shoulder hole of screwed hole 120 to the opposite side 12 of this inner chamber 10 for the little segmentum laterale of medial segment, the outer wall of described valve pocket matrix 1 middle part offer one with its inner chamber 10 axis normal and the long and narrow perforation 13 that is communicated with inner chamber 10, the length of described long and narrow perforation 13 is greater than some square holes 51 on the valve pocket 5,52 spacing distance;
The head 20 of described first locating shaft 2 has terminal pad, its axostylus axostyle 21 mates the one-level stairstepping of back segment shaft diameter greater than valve pocket 5 external diameters for through hole 50 diameters of leading portion shaft diameter and valve pocket 5, and its axostylus axostyle 21 its head 20 terminal pads in the inner chamber 10 that inserts valve pocket matrix 1 one sides 11 are fixed on the step surface of valve pocket matrix 1 inner chamber;
Described second locating shaft 3 mates the one-level stairstepping of back segment shaft diameter greater than valve pocket 5 external diameters for through hole 50 diameters of leading portion shaft diameter and valve pocket 5;
Described assembly jack panel 4 can spin with the screwed hole 120 of valve pocket matrix 1, put into the inner chamber 10 of valve pocket matrix 1 and be enclosed within the axostylus axostyle 21 leading portion axles of first locating shaft 2 at valve pocket 5, only be against up to valve pocket 5 one ends on the step surface 210 of axostylus axostyle 21, second locating shaft 3 inserts the inner chamber 10 of valve pocket matrixes 1 and its leading portion axle inserts in the through hole 50 of valve pocket 5 when its step surface only is against the other end of valve pocket 5 from the opposite side 12 of valve pocket matrix 1, and the screwed hole 120 of described assembly jack panel 4 and valve pocket matrix 1 spins and replaces rear end at second locating shaft 3.
Described positioning fixture comprises the alignment pin 70 that radially is located at valve pocket matrix 1 middle part and the pin-and-hole 14 vertical with long and narrow perforation 11 and inserts described pin-and-hole 14, also comprises a location device.
The good anchor clamps of the present invention of device are placed on location and centering on the corresponding spark-erosion machine tool workbench, cooperate the electrospark electrode anchor clamps to carry out electric-spark drilling.Earlier carry out a break-through with the roughing electrode, with a smart electrode prescription hole 51,52 of the side of putting on earlier, after putting on valve pocket matrix 1 is rotated 180 degree, prescription holes 51,52 of the side of wearing again then, promptly finish electric spark after having worn and wear the square hole operation, valve pocket 5 can change next procedure over to and continue processing.
Claims (2)
1. the electrical spark working clamping apparatus of the square hole of valve pocket in the electrohydraulic servo valve, described valve pocket (5) contains axially extending bore (50), described anchor clamps comprise valve pocket matrix (1), first locating shaft (2), second locating shaft (3) and one is pieced together jack panel (4), it is characterized in that: described valve pocket matrix (1) can make the freely through hollow cylinder of valve pocket (5) for inner chamber, one side (11) of this inner chamber (10) is the big one-level shoulder hole of the little segmentum laterale of medial segment, also big and this segmentum laterale is the one-level shoulder hole of screwed hole (120) to the opposite side (12) of this inner chamber (10) for the little segmentum laterale of medial segment, the outer wall of described valve pocket matrix (1) middle part offer one with its inner chamber (10) axis normal and the long and narrow perforation (13) that is communicated with inner chamber (10), the length of described long and narrow perforation (13) is greater than some square holes (51) on the valve pocket (5), (52) spacing distance;
The head (20) of described first locating shaft (2) has terminal pad, its axostylus axostyle (21) is through hole (50) the diameter coupling of leading portion shaft diameter and valve pocket (5) and the back segment shaft diameter one-level stairstepping greater than valve pocket (5) external diameter, and its axostylus axostyle (21) its head (20) terminal pad in the inner chamber (10) that inserts valve pocket matrix (1) one side (11) is fixed on the step surface of valve pocket matrix (1) inner chamber;
Described second locating shaft (3) is through hole (50) the diameter coupling of leading portion shaft diameter and valve pocket (5) and the back segment shaft diameter one-level stairstepping greater than valve pocket (5) external diameter;
Described assembly jack panel (4) can spin with the screwed hole (120) of valve pocket matrix (1), put into the inner chamber (10) of valve pocket matrix (1) and be enclosed within axostylus axostyle (21) the leading portion axle of first locating shaft (2) at valve pocket (5), only be against up to valve pocket (5) one ends on the step surface (210) of axostylus axostyle (21), second locating shaft (3) inserts the inner chamber (10) of valve pocket matrix (1) and its leading portion axle inserts in the through hole (50) of valve pocket (5) when its step surface only is against the other end of valve pocket (5) from the opposite side (12) of valve pocket matrix (1), and the screwed hole (120) of described assembly jack panel (4) and valve pocket matrix (1) spins and replaces rear end in second locating shaft (3).
2. the electrical spark working clamping apparatus of the square hole of valve pocket in a kind of electrohydraulic servo valve according to claim 1, it is characterized in that: described positioning fixture comprises and radially is located at valve pocket matrix (1) middle part and the pin-and-hole (14) vertical with long and narrow perforation (11) and inserts the alignment pin (70) of described pin-and-hole (14), also comprises a location device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205962397U CN201862880U (en) | 2010-11-08 | 2010-11-08 | Electrical discharge machining fixture for square holes of valve bushes in electro-hydraulic servo valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205962397U CN201862880U (en) | 2010-11-08 | 2010-11-08 | Electrical discharge machining fixture for square holes of valve bushes in electro-hydraulic servo valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201862880U true CN201862880U (en) | 2011-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205962397U Expired - Fee Related CN201862880U (en) | 2010-11-08 | 2010-11-08 | Electrical discharge machining fixture for square holes of valve bushes in electro-hydraulic servo valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201862880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598590A (en) * | 2017-11-02 | 2018-01-19 | 中国航天科技集团公司烽火机械厂 | A kind of accurate frock for processing valve pocket hole and a kind of valve pocket process equipment |
-
2010
- 2010-11-08 CN CN2010205962397U patent/CN201862880U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598590A (en) * | 2017-11-02 | 2018-01-19 | 中国航天科技集团公司烽火机械厂 | A kind of accurate frock for processing valve pocket hole and a kind of valve pocket process equipment |
| CN107598590B (en) * | 2017-11-02 | 2023-08-25 | 四川航天烽火伺服控制技术有限公司 | Precise tool for machining valve sleeve hole and valve sleeve machining equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20131108 |