CN101450442B - Press-fitting tool between the nozzle of electro-hydraulic servo valve and nozzle shell - Google Patents
Press-fitting tool between the nozzle of electro-hydraulic servo valve and nozzle shell Download PDFInfo
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- CN101450442B CN101450442B CN2007101715158A CN200710171515A CN101450442B CN 101450442 B CN101450442 B CN 101450442B CN 2007101715158 A CN2007101715158 A CN 2007101715158A CN 200710171515 A CN200710171515 A CN 200710171515A CN 101450442 B CN101450442 B CN 101450442B
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- nozzle
- nozzle body
- locating piece
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- head
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Abstract
The invention discloses force-fit tooling used between a nozzle and a nozzle shell of an electrohydraulic servo valve. The head part of the nozzle is conical, and the bottom part of the nozzle is a plane; the center of the upper end face of the nozzle shell is provided with a cavity accommodating the nozzle; the tooling comprises a base, a positioning block and a press head; the nozzle shell is arranged in a big cavity of the positioning block, and the nozzle is arranged in the part of the positioning block, which is used as a guide channel of the nozzle; and the press head is sleeved on the nozzle, and the head part of the press head applies downward force to make the nozzle enter the cavity of the nozzle shell. The whole tooling has the advantages of simple structure, low manufacturing cost, consideration to adjustability as well as high positioning accuracy, strong operability and strong practicability, so that the force fit between the nozzle and the nozzle shell is convenient; and the tooling also has the advantages of being conveniently operated by a worker, improving processing efficiency, reducing processing time and saving processing cost.
Description
Technical field
The present invention relates to a kind of assembly tooling, relate in particular to the frock that is press-fitted between a kind of nozzle that is used for electrohydraulic servo valve and the nozzle body.
Background technology
Electrohydraulic servo valve is a kind of high accuracy that is used for electrohydraulic control system, the electro-hydraulic servo control assembly with very high dynamic response, and it can be used for the hydraulic control system of accurate displacement, speed, power and acceleration.Nozzle assembly is the core Control Component of electrohydraulic servo valve, and it is press-fitted the quality of assembling to the precision of prestage and even whole servo valve, every important performance characteristic decisive role all.The various assemblings adopted of past be press-fitted all have complicated operation, the axiality positioning accuracy is not enough, the part after being press-fitted easily produces shortcomings such as diastrophic.
Summary of the invention
The objective of the invention is to solve the problems referred to above that prior art exists, the frock that is press-fitted between a kind of easy to operate, nozzle that the location is used for electrohydraulic servo valve reliably and the nozzle body is provided.
The objective of the invention is to be achieved: be press-fitted frock between a kind of nozzle that is used for electrohydraulic servo valve and the nozzle body by following technical scheme, the head end centre of described nozzle is an arc surface for the both sides, plane, the upper surface central authorities of described nozzle body are provided with a cavity that is used to settle nozzle, described frock comprises a base, a positioning block and a pressure head, wherein
The upper surface of described base is provided with a groove;
Described locating piece is inlaid in the groove of base, its end face central authorities are provided with a up-small and down-big one-level shoulder hole, the diameter of the macropore of this shoulder hole and the external diameter of nozzle body coupling are in order to the arrangement nozzle body, and the external diameter of hole diameter and nozzle coupling is in order to the guide channel of nozzle;
Described pressure head is a T shape bar, and its bar portion diameter is identical with the outer surface diameter of nozzle, and the lower surface of this bar portion is one to be provided with a groove with the arc surface of the head end of nozzle coupling and in the central authorities of this end face;
Described nozzle body is placed in the macropore inner chamber of locating piece, and described nozzle is placed in the guide channel as nozzle of locating piece, and described pressure head is sleeved on the nozzle, applies downward power at the head of pressure head nozzle is entered in the inner chamber of nozzle body.
Be press-fitted frock between above-mentioned nozzle that is used for electrohydraulic servo valve and the nozzle body, wherein, be matched in clearance between the internal chamber wall of the macropore of described locating piece and the nozzle body outer surface, gap value is 0.001～0.002mm, and the minor diameter endoporus of described locating piece is all coaxial with nozzle and nozzle body.
Adopted the frock that is press-fitted between nozzle that is used for electrohydraulic servo valve of the present invention and the nozzle body, this frock has accomplished to make things convenient for workpiece to install, improved working (machining) efficiency, and in being press-fitted process, guaranteed the axiality of nozzle body and nozzle preferably, make workpiece be not easy to produce flexural deformation, kept simultaneously repeatedly using the whole frock in back also to keep the characteristics of fine precision equally.Whole frock simple in structure, simple to operation do not need heat and professional knowledge.
Description of drawings
Fig. 1 is the nozzle of electrohydraulic servo valve and the structural representation that is press-fitted frock between the nozzle body of being used for of the present invention;
Fig. 2 is the nozzle of electrohydraulic servo valve and the user mode figure that is press-fitted frock between the nozzle body of being used for of the present invention.
The specific embodiment
Provide the specific embodiment of the present invention below in conjunction with accompanying drawing:
See also Fig. 1, electrohydraulic servo valve comprises nozzle 1 and nozzle body 2, and the head of nozzle 1 is the plane for the taper shape bottom; The upper surface central authorities of this nozzle body 2 are provided with a cavity 20 that is used to settle nozzle 1,
Of the present inventionly be used for the nozzle of electrohydraulic servo valve and the frock that is press-fitted between the nozzle body comprises a base 31, a positioning block 32 and a pressure head 33, wherein, the upper surface of base 31 is provided with a groove 310; Locating piece 32 is inlaid in the groove 310 of base 31, its end face central authorities are provided with a up-small and down-big one-level shoulder hole, macropore 321 diameters of this shoulder hole and the external diameter of nozzle body 2 coupling, arrangement in order to nozzle body 2, between big 321 internal chamber wall of this locating piece and nozzle body 2 outer surfaces is matched in clearance, gap value is 0.001～0.002mm, and the external diameter of the diameter of aperture 322 and nozzle 1 coupling, in order to the guide channel of nozzle 1, the aperture 322 of this locating piece is coaxial with nozzle body 2 with nozzle 1; Pressure head 33 is a T shape bar, its bar portion 331 diameters are identical with the outer surface diameter of nozzle 1, the lower surface of this bar portion 311 is one to be provided with a groove 332 with the arc surface of the head end of nozzle 1 coupling and in the central authorities of this end face, this groove 332 can not contact the centre of the lower surface of pressure head 33 with the mid-plane of the head end of nozzle 1, and the cell wall end face of groove 332 is contacted with the arc surface on nozzle 1 head both sides, pressure head 33 active forces are acted on the sidewall of nozzle 1, do not allow to be pressed onto the mid-plane of the head end of nozzle 1, in order to avoid nozzle 1 distortion.
Locating piece 32 materials are round steel, hardness ratio is higher, repeatedly use the purpose that can also keep original precision to reach, each surface requirements roughness of locating piece 32 is Ra1.6, the aperture 322 that the guide channel of the macropore 321 of nozzle body 2 and nozzle 1 is installed will keep higher axiality, to prevent because the deformed damaged of the part that coaxiality error causes.
Nozzle body to be press-fitted 2 is packed in the macropore 321 of locating piece 32, then locating piece 32 is installed on the base 31, being placed in the aperture 322 as guide channel of locating piece 32 with nozzle body 2 corresponding nozzles 1, will check whether nozzle 1 is complied with guide channel and kept coaxial with nozzle body 2 this moment, with pressure head 33 clampings on forcing press, to install locating piece 32 bases 31 and be placed on the press platform, slowly pressing and move down pressure head 33 at the head 333 of pressure head 33 enters in the cavity 20 of nozzle body 2 nozzle 1.
Above described only be to be used for illustrating the present invention, and be not to be used as limitation of the invention, the present invention can also change and more mode, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (1)
1. be press-fitted frock between nozzle that is used for electrohydraulic servo valve and the nozzle body, the head end centre of described nozzle is an arc surface for the both sides, plane, the upper surface central authorities of described nozzle body are provided with a cavity that is used to settle nozzle, described frock comprises a base, a positioning block and a pressure head, it is characterized in that the upper surface of described base is provided with a groove;
Described locating piece is inlaid in the groove of base, its end face central authorities are provided with a up-small and down-big one-level shoulder hole, the diameter of the macropore of this shoulder hole and the external diameter of nozzle body coupling are in order to the arrangement nozzle body, and the external diameter of hole diameter and nozzle coupling is in order to the guide channel of nozzle; Described pressure head is a T shape bar, and its bar portion diameter is identical with the outer surface diameter of nozzle, and the lower surface of this bar portion is one to be provided with a groove with the arc surface of the head end of nozzle coupling and in the central authorities of this end face; Described nozzle body is placed in the macropore inner chamber of locating piece, and described nozzle is placed in the guide channel as mouth of locating piece, and described pressure head is sleeved on the nozzle, applies downward power at the head of pressure head nozzle is entered in the inner chamber of nozzle body; Be matched in clearance between the internal chamber wall of the macropore of described locating piece and the nozzle body outer surface, gap value is 0.001～0.002mm, and the minor diameter endoporus of described locating piece is all coaxial with nozzle and nozzle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101715158A CN101450442B (en) | 2007-11-30 | 2007-11-30 | Press-fitting tool between the nozzle of electro-hydraulic servo valve and nozzle shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101715158A CN101450442B (en) | 2007-11-30 | 2007-11-30 | Press-fitting tool between the nozzle of electro-hydraulic servo valve and nozzle shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101450442A CN101450442A (en) | 2009-06-10 |
| CN101450442B true CN101450442B (en) | 2011-12-21 |
Family
ID=40733024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101715158A Expired - Fee Related CN101450442B (en) | 2007-11-30 | 2007-11-30 | Press-fitting tool between the nozzle of electro-hydraulic servo valve and nozzle shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101450442B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858344B (en) * | 2010-06-01 | 2013-06-19 | 云南大红山管道有限公司 | Method and tool for mounting main pump inlet one-way valve seat |
| CN102528423B (en) * | 2011-12-23 | 2015-04-29 | 江苏日盈电子股份有限公司 | Nozzle press mounting worktable |
| CN102699865A (en) * | 2012-06-11 | 2012-10-03 | 卓越（苏州）自动化设备有限公司 | Self-centering press fitting tool |
| CN103600218B (en) * | 2013-08-12 | 2015-10-14 | 九牧厨卫股份有限公司 | A kind of spraying shell assembles spraying core apparatus automatically |
| CN105014376B (en) * | 2015-08-10 | 2017-05-24 | 广西玉柴机器股份有限公司 | Auxiliary assembling device of engine piston cooling spray hook and assembling method of auxiliary assembling device |
| CN106644417A (en) * | 2015-10-28 | 2017-05-10 | 北京实验工厂 | Servo valve orifice part jet quality checking method and servo valve orifice part jet quality testing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1830616A (en) * | 2005-03-11 | 2006-09-13 | 罗伯特·博世有限公司 | Apparatus of assemble and disassemble fuel injection valve |
| CN101011820A (en) * | 2006-01-30 | 2007-08-08 | 弗莱斯纳有限责任公司 | Tool for mounting a bar shape sealing element or O-ring in a mounting groove of a jet beam |
-
2007
- 2007-11-30 CN CN2007101715158A patent/CN101450442B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1830616A (en) * | 2005-03-11 | 2006-09-13 | 罗伯特·博世有限公司 | Apparatus of assemble and disassemble fuel injection valve |
| CN101011820A (en) * | 2006-01-30 | 2007-08-08 | 弗莱斯纳有限责任公司 | Tool for mounting a bar shape sealing element or O-ring in a mounting groove of a jet beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101450442A (en) | 2009-06-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20111221 Termination date: 20131130 |