CN104373405B - Servo valve body and machining method of servo valve body - Google Patents
Servo valve body and machining method of servo valve body Download PDFInfo
- Publication number
- CN104373405B CN104373405B CN201410715159.1A CN201410715159A CN104373405B CN 104373405 B CN104373405 B CN 104373405B CN 201410715159 A CN201410715159 A CN 201410715159A CN 104373405 B CN104373405 B CN 104373405B
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- valve body
- oil
- valve
- hole
- valve element
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
Abstract
The invention relates to a servo valve body which comprises a main valve body. A valve element installation bottom hole is formed in the main valve body, valve seat fastening screw holes are symmetrically formed in the two sides of the valve element installation bottom hole, a valve sleeve installation hole is formed in the periphery of the valve element installation bottom hole, and meanwhile grinding undercuts are formed in the bottom of the valve sleeve installation hole and the bottom of the valve element installation bottom hole; a pressure balance channel is formed in the side portion of the grinding undercut in the bottom of the valve element installation bottom hole. A reset spring base is installed in a reset base installation positioning hole in a matched mode; the upper portion of an adjusting screw is matched with a positioning hole in the upper portion of the adjusting screw, the lower portion of the adjusting screw is matched with a positioning hole in the lower portion of the adjusting screw, and internal threads are installed in the adjusting screw for positioning and fastening. Four oil inlet channels are formed in an oil inlet part of the main valve body, four control oil ways are arranged on an oil control part, oil return channels are formed in an oil return part, and the oil inlet channels, the control oil ways and the oil return channels are communicated to synchronously control oil return, pressure oil passes through the main valve body to be conveyed to a variable oil cylinder to control the fixed point stopping position of the oil cylinder, and the effect of controlling the discharge capacity of a hydraulic pump is achieved.
Description
Technical field
The present invention relates to servo-control system technical field, more particularly to a kind of servo valve body and its processing method.
Background technology
Core conversion element of the servo valve as servo-control system, miscellaneous part are all integrated on valve body, valve body
Performance directly affects the precision and stability of whole control system, by valve body is installed on the pump housing, by control pressure oil
And then control hydraulic pump discharge.But in running, the pressure inside and outside die cavity is different, so as to affect the normal fortune of valve body
OK, while adjusting screw coordinates installation unreasonable in valve body endogenous cause of ill up and down, cause to wear and tear up and down and differ, and the oil circuit in valve body is not
Can synchronously realize controlling oil return, and then cause variable oil cylinder to be unable to the fixed point stop position of control cylinder, play control hydraulic pump
The effect of discharge capacity.Additionally, in valve body assembling process, the fit-up gap between each component and size be also it is equal important,
Fit-up gap is excessive, and the noise produced during operation is big, not only causes environmental pollution, and affects the transmission between each component
Performance；Equipment gap is too small, directly results in the damage of valve inner component.
The content of the invention
Technical problem solved by the invention is to provide a kind of servo valve body and its processing method, to solve above-mentioned background
Shortcoming in technology.
Technical problem solved by the invention employs the following technical solutions to realize：
Servo valve body, including valve body, wherein, is provided with valve element and installs bottom outlet, and install bottom outlet both sides in valve element on valve body
The valve seat trip bolt hole for installing fastening valve seat is symmetrically arranged with, and valve pocket installing hole is arranged on valve element and installs outside bottom outlet
Enclose, while installing bottom outlet bottom in valve pocket installing hole and valve element is provided with grinding undercut, for emery wheel surpassed distance during polish, it is anti-
Only sealing produces air pressure, and the sidepiece for installing bottom outlet bottom runby groove in valve element offers balance pressure channel, to balance die cavity
External and internal pressure；Return spring holder cooperation is installed in reset seat mounting-positioning holes, and its head passes through reset seat pin-and-hole Jing valve pockets
The breach of upper setting is withstood on valve element；Adjusting screw top is coordinated with adjusting screw top location hole, under bottom and adjusting screw
Portion's location hole coordinates, and installs female thread positioning fastening by adjusting screw；In valve body, oil circuit is divided into oil-feed, oil-control and oil return three
Individual part, oil-feed part are provided with four oil inlet passages, and oil controlling portion sets up separately and is equipped with four control oil ducts, and oil return part is provided with back
Oily passage, and oil inlet passage, control oil duct connected with drainback passage each other, tetra- oil inlet passages of pressure oil Jing be delivered to valve element with
At the control port of valve pocket composition, then Jing controls oil duct is delivered on the left of servo variable displacement cylinder all the way, and another road Jing controls oil duct
It is delivered on the right side of servo variable displacement cylinder, when pressure oil walks left, the oily Jing right wings on the right side of servoBcylinder are returned and unloaded by drainback passage
Lotus is discharged, and equally, when pressure oil walks right wing, the oily Jing left on the left of servoBcylinder is returned and discharged by drainback passage off-load.
In the present invention, locating plane is provided with valve body, be that processing technique needs the Set and Positioning for designing to put down
Face.
In the present invention, it is high accuracy coaxial aperture that valve pocket installing hole installs bottom outlet with valve element.
In the present invention, bottom trip bolt hole and sidepiece trip bolt hole is provided with valve body, is that fastening uses are installed.
In the present invention, reset seat fastening female thread and seal groove is provided with reset seat mounting-positioning holes, seals spiral shell
Plug fastens female thread by reset seat and seal groove fit sealing is installed on valve body.
In the present invention, installing locating slot is additionally provided with valve body, for positioning valve.
In the present invention, feedback rod is provided with valve body swinging chute is installed, for adjusting the installation site of feedback rod.
In the present invention, valve body-side is provided with sidepiece and installs locating surface, and its bottom is provided with bottom and installs locating surface, and
Sidepiece is installed locating surface and installs locating surface for orthogonal installation positioning plane with bottom.
In the present invention, valve body need to possess the characteristics such as wear-resisting, corrosion-resistant and impact resistance, and according to actual needs, portion
It is 0mm～+0.005mm that separation structure needs the dimensional accuracy that higher machining accuracy, valve pocket installing hole and valve element install bottom outlet, shape
Shape precision is 0.0025mm, and surface roughness is 0.4 μm；The chi of adjusting screw top location hole and adjusting screw bottom location hole
Very little precision is 0mm～+0.025mm；It is 0.012mm that locating surface and the perpendicularity precision of sidepiece installation locating surface are installed in bottom；Its
Remaining body structure surface is required for machining requirements IT6 class precisions.
Servo valve body base substrate processing method, comprises the following steps that：
1) matrix material is chosen, matrix material is required：Material HT300, dense structure, without the defect for affecting quality, matrix
Material samples hardness for 200～240HBS, and tensile strength is not less than 200N/mm2, casting accuracy press GB/T6414-CT-8 execution；
2) to step 1) the middle matrix material chosen goes deburring, batch seam, shot blasting on surface process, and carry out at artificial aging
Reason, to eliminate internal stress, obtains foundry goods base substrate；
3) by step 2) in the foundry goods base substrate that obtains be machined out, the positioning machining of locating surface black skin is installed with sidepiece
Other machinable design shape faces, install bottom outlet in processing valve pocket installing hole and valve element and stay allowance, and remaining can respectively process knot
Structure completes processing by design clamped one time, obtains valve body；The process equipment for adopting for vertical machining centre, and in vertical machining centre
Production development sampling observation detector is inside installed, valve body critical size is detected, with the machining accuracy for ensureing to produce in batches, effective control
Scrappage；
4) to step 3) in processing obtain valve body be sampled detection, sampling observation rate is not less than 5%, and sample detection is full inspection；
5) in step 4) on the qualified valve body of detection, other are machinable to install the machining of locating surface face positioning with bottom
Design shape face, the process equipment for being adopted is for vertical machining centre, and is provided with Production development sampling observation in vertical machining centre
Detector, detects valve body critical size, and with the machining accuracy for ensureing to produce in batches, effective control scrappage, and sidepiece are installed fixed
Plane and bottom are installed locating surface and position processing for acted as reference mutual mode, to ensure that its perpendicularity each other is required；
6) to step 5) in the valve body of completion of processing be sampled detection, sampling observation rate is not less than 5%, and sample detection is complete
Inspection；
7) to step 6) in the qualified valve body of detection integrally carry out phosphatization corrosion protection process；
8) in step 7) in carry out on the valve body that phosphatization corrosion protection is disposed, bottom outlet is installed to valve pocket installing hole and valve element and is entered
The row top gem of a girdle-pendant cuts with scissors polish, and top gem of a girdle-pendant hinge three steps of technique point are completed, and valve pocket installing hole and valve element are installed bottom outlet and be respectively on the basis of, phase
It is acted as reference mutual between mutually, to ensure its own precision and positional precision each other；
9) to step 8) in the top gem of a girdle-pendant hinge valve body that finishes of polish remove flash removed；
10) to step 9) in go the valve body that flash removed is finished to be sampled detection, sampling observation rate is not less than 5%, sample detection
For full inspection；
11) to step 10) in the qualified valve body of detection carry out cleaning corrosion protection and go magnetic treatment；
12) to step 11) in carry out clean corrosion protection degaussing be disposed valve body outward appearance detection it is qualified after, encapsulation warehouse-in.
In invention, step 9) turning over all over burr produced by machining and top gem of a girdle-pendant hinge polish is removed using heat energy mode.
Beneficial effect：The present invention opens up balance pressure channel by installing the sidepiece of bottom outlet bottom runby groove in valve element, uses
In the external and internal pressure of balance die cavity, so as to realize the normal operation of valve body；Adjusting screw top is fixed with adjusting screw top simultaneously
Position hole coordinates, and bottom is coordinated with adjusting screw bottom location hole, and installs female thread positioning fastening by adjusting screw, to reduce
Rivet nut is worn and torn the problem for differing up and down；And oil inlet passage, control oil duct are connected each other with drainback passage in valve body, to realize synchronization
Control oil return, control pressure oil are delivered to variable oil cylinder Jing after valve body with the fixed point stop position of control cylinder, play control liquid
The effect of pump displacement；And assemble according to set fit-up gap and size between valve part, not only effectively reduce producing during operation
Raw noise, and the transmission performance of each component can be ensured, and then extend the service life of servo valve body.
Description of the drawings
Front views of the Fig. 1 for presently preferred embodiments of the present invention.
Top views of the Fig. 2 for presently preferred embodiments of the present invention.
Fig. 3 is sectional view at H-H in Fig. 2.
Rearviews of the Fig. 4 for presently preferred embodiments of the present invention
Upward views of the Fig. 5 for presently preferred embodiments of the present invention.
Fig. 6 is sectional view at E-E in Fig. 5.
Fig. 7 is sectional view at F-F in Fig. 5.
Fig. 8 is sectional view at G-G in Fig. 5.
Fig. 9 is presently preferred embodiments of the present invention servo valve body base substrate axonometric drawing.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to the servo valve body of Fig. 1～Fig. 8, including bottom trip bolt hole 2, locating plane 3, sidepiece trip bolt
Hole 4, left control oil duct 1, technique spiro pluging hole 6, right control oil duct 27, oil inlet passage 28, valve seat trip bolt hole 9, sealing
Ring recess 1, valve pocket installing hole 11, valve element install bottom outlet 12, seal groove 2 13, adjusting screw top location hole 14, adjustment spiral shell
Nail bottom location hole 15, sidepiece installs locating surface 16, installing locating slot 17, seal groove 3 18, oil inlet passage 3 19, bottom peace
Set plane 20, drainback passage 21, seal groove 4 22, reset seat fastening female thread 23, right control oil duct 2 24, feedback rod peace
Dress swinging chute 25, oil inlet passage 4 26, seal groove 5 27, balance pressure channel 28, seal groove 6 29, left control oil duct two
30th, seal groove 7 31, square interface 32, adjusting screw install female thread 33, grinding undercut 1, grinding undercut 2 35, reset seat
In pin-and-hole 36, oil inlet passage 5 37, seal groove 8 38, reset seat mounting-positioning holes 39, left screw plug female thread 40 and right screw plug
Screw thread 41.
In the present embodiment, on valve body, all seal grooves are used to mounting O-shaped sealing ring, prevent the pressure oil after assembling
Reveal；The Set and Positioning plane that locating plane 3 is designed for processing technique needs；Bottom trip bolt hole 2 and sidepiece are tight
Gu screw hole 4 is installation fastening uses；After technique spiro pluging hole 6, left screw plug female thread 40 and right screw plug female thread 41 are used for assembling
Channel blockage, belong to assembly technology structure；Valve seat trip bolt hole 9 is the peace for installing 12 symmetric design of bottom outlet with regard to valve element
Dress screw thread, the installation for valve seat are fastened；Adjusting screw installs female thread 33, adjusting screw top location hole 14 and adjusting screw
The through hole of bottom location hole 15 is used for mounting and adjusting screw, and adjusting screw top is coordinated with adjusting screw top location hole 14,
Bottom is coordinated with adjusting screw bottom location hole 15, and installs the positioning fastening of female thread 33, seal groove two by adjusting screw
13 is sealing structure；It is high accuracy coaxial aperture that valve pocket installing hole 11 and valve element install bottom outlet 12, and is had more in respective bottom design
Journey groove 2 35 and grinding undercut 1, for emery wheel surpassed distance during polish, valve pocket installing hole 11 is used for the cooperation of valve pocket and installs, valve
Core loads valve element and installs in bottom outlet 12 after passing through valve seat and valve pocket interstitial hole, in order to prevent sealing from producing air pressure, in grinding undercut one
34 sidepiece offers balance pressure channel 28, balances the external and internal pressure of die cavity；Return spring holder cooperation is installed on reset seat peace
In dress location hole 39, its head passes through the breach designed on reset seat pin-and-hole 36 and valve pocket to withstand on the counter structure of spool design
On, sealing plug fastens female thread 23 by reset seat and 8 38 fit sealing of seal groove is installed on valve body；Oil circuit is divided into
Oil-feed, three parts of oil-control and oil return, oil-feed part Jing oil inlet passages 3 19, oil inlet passage 4 26, oil inlet passage 28 and oil-feed
Passage 5 37 is delivered at the control port of valve element and valve pocket composition, and then Jing is left all the way controls oil duct 1 and left control oil duct
2 30 are delivered on the left of servo variable displacement cylinder, and another right control oil ducts 27 of road Jing and right control oil duct 2 24 are delivered to servo variable displacement
On the right side of cylinder, when pressure oil walks left, the oily Jing right wings on the right side of servoBcylinder are returned and are discharged by 21 off-load of drainback passage, equally,
When pressure oil walks right wing, the oily Jing left on the left of servoBcylinder is returned and is discharged by 21 off-load of drainback passage；Sidepiece installs positioning
Face 16 and bottom are installed locating surface 20 and install positioning plane for orthogonal, be additionally provided with installing locating slot 17, use on valve body
In positioning valve；The feedback rod arranged in valve body installs swinging chute 25, for adjusting the installation site of feedback rod.
In the present embodiment, the valve body need to possess the characteristics such as wear-resisting, corrosion-resistant and impact resistance, and according to actually used need
Will, part-structure need the dimensional accuracy that higher machining accuracy, valve pocket installing hole 11 and valve element install bottom outlet 12 be 0mm～+
0.005mm, form accuracy are 0.0025mm, and surface roughness is 0.4 μm；Under adjusting screw top location hole 14 and adjusting screw
The dimensional accuracy of portion's location hole 15 is 0mm～+0.025mm；Locating surface 20 is installed in bottom and sidepiece installs the vertical of locating surface 16
Degree precision is 0.012mm；Remaining body structure surface is required for machining requirements IT6 class precisions.
Servo valve body base substrate shown in Figure 9, is carried out in strict accordance with servo valve body base substrate schematic diagram in process
Processing, comprises the following steps that：
1) matrix material is chosen, matrix material is required：Material HT300, dense structure are not allow for pore, loose, slag inclusion
Deng the defect for affecting quality, matrix material samples hardness for 200～240HBS, and tensile strength is not less than 200N/mm2, casting essence
Degree presses GB/T6414-CT-8 execution；
2) to step 1) the middle matrix material chosen goes deburring, batch seam, shot blasting on surface process, and carry out at artificial aging
Reason, to eliminate internal stress, obtains foundry goods base substrate；
3) by step 2) in obtain foundry goods base substrate be machined out, with sidepiece install 16 black skin localization machine of locating surface add
Other machinable design shape faces of work, install bottom outlet 12 in processing valve pocket installing hole 11 and valve element and stay allowance, and remaining respectively may be used
Processing structure completes processing by design clamped one time, obtains valve body；The process equipment for adopting is for vertical machining centre, and adds vertical
It is intracardiac in work that Production development sampling observation detector is installed, valve body critical size is detected, with the machining accuracy for ensureing to produce in batches, is had
Effect control scrappage；
4) to step 3) in processing obtain valve body be sampled detection, sampling observation rate is not less than 5%, and sample detection is full inspection；
5) in step 4) on the qualified valve body of detection, other can be processed to install the machining of 20 face of locating surface positioning with bottom
Design shape face, the process equipment for being adopted is for vertical machining centre, and is provided with Production development in vertical machining centre and takes out
Inspection detector, detects valve body critical size, and with the machining accuracy for ensureing to produce in batches, effective control scrappage, and sidepiece are installed
Locating surface 16 and bottom are installed locating surface 20 and position processing for acted as reference mutual mode, to ensure that its perpendicularity each other will
Ask；
6) to step 5) in the valve body of completion of processing be sampled detection, sampling observation rate is not less than 5%, and sample detection is complete
Inspection；
7) to step 6) in the qualified valve body of detection integrally carry out phosphatization corrosion protection process；
8) in step 7) in carry out on the valve body that phosphatization corrosion protection is disposed, bottom outlet is installed to valve pocket installing hole 11 and valve element
12 carry out the top gem of a girdle-pendant cuts with scissors polish, and top gem of a girdle-pendant hinge three steps of technique point are completed, and valve pocket installing hole 11 and valve element are installed bottom outlet 12 and be respectively certainly
On the basis of, it is acted as reference mutual each other, to ensure its own precision and positional precision each other；
9) to step 8) in the top gem of a girdle-pendant hinge valve body that finishes of polish remove flash removed；
10) to step 9) in go the valve body that flash removed is finished to be sampled detection, sampling observation rate is not less than 5%, sample detection
For full inspection；
11) to step 10) in the qualified valve body of detection carry out cleaning corrosion protection and go magnetic treatment；
12) to step 11) in carry out clean corrosion protection degaussing be disposed valve body outward appearance detection it is qualified after, encapsulation warehouse-in.
In the present embodiment, step 9) turning over all over hair produced by machining and top gem of a girdle-pendant hinge polish is removed using heat energy mode
Thorn.
The ultimate principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (9)
1. servo valve body, including valve body, it is characterised in that is provided with valve element on valve body and installs bottom outlet, and installs bottom outlet in valve element
Both sides are symmetrically arranged with the valve seat trip bolt hole for installing fastening valve seat, and valve pocket installing hole is arranged on valve element and installs bottom outlet
Periphery, while installing bottom outlet bottom in valve pocket installing hole and valve element is provided with grinding undercut, and installs bottom outlet bottom runby in valve element
The sidepiece of groove offers balance pressure channel；Return spring holder cooperation is installed in reset seat mounting-positioning holes, and its head is passed through
The breach arranged on reset seat pin-and-hole Jing valve pockets is withstood on valve element；Match somebody with somebody with adjusting screw top location hole on adjusting screw top
Close, bottom is coordinated with adjusting screw bottom location hole, and female thread positioning fastening is installed by adjusting screw；Oil circuit point in valve body
For oil-feed, three parts of oil-control and oil return, oil-feed part is provided with four oil inlet passages, and oil controlling portion sets up separately and is equipped with four control oil
Road, oil return part are provided with drainback passage, and oil inlet passage, control oil duct are connected each other with drainback passage, pressure oil Jing tetra-
Oil inlet passage is delivered at the control port of valve element and valve pocket composition, and then Jing controls oil duct is delivered to a servo variable displacement cylinder left side all the way
Side, another road Jing controls oil duct are delivered on the right side of servo variable displacement cylinder, the oily Jing right wings when pressure oil walks left, on the right side of servoBcylinder
Return and simultaneously discharged by drainback passage off-load, equally, when pressure oil walks right wing, the oily Jing left on the left of servoBcylinder return and by time
Oily passage off-load is discharged.
2. servo valve body according to claim 1, it is characterised in that be provided with locating plane on valve body.
3. servo valve body according to claim 1, it is characterised in that it is coaxial that valve pocket installing hole installs bottom outlet with valve element
Hole.
4. servo valve body according to claim 1, it is characterised in that be provided with bottom trip bolt hole and sidepiece on valve body
Trip bolt hole.
5. servo valve body according to claim 1, it is characterised in that be provided with reset seat in reset seat mounting-positioning holes tight
Gu female thread and seal groove, sealing plug fastens female thread by reset seat and seal groove fit sealing is installed on valve body
On.
6. servo valve body according to claim 1, it is characterised in that be additionally provided with installing locating slot on valve body.
7. servo valve body according to claim 1, it is characterised in that be provided with feedback rod in valve body and install swinging chute.
8. servo valve body according to claim 1, it is characterised in that valve body-side is provided with sidepiece and installs locating surface, its
Bottom is provided with bottom and installs locating surface, and sidepiece is installed locating surface and installs positioning with bottom installation locating surface for orthogonal
Plane.
9. servo valve body processing method, it is characterised in that comprise the following steps that：
1) matrix material is chosen, matrix material is required：Material HT300, dense structure, without the defect for affecting quality, matrix material
Sampling hardness is 200～240HBS, and tensile strength is not less than 200N/mm2, casting accuracy press GB/T6414-CT-8 execution；
2) to step 1) the middle matrix material chosen goes deburring, batch seam, shot blasting on surface process, and artificial aging process is carried out,
To eliminate internal stress, foundry goods base substrate is obtained；
3) by step 2) in the foundry goods base substrate that obtains be machined out, with sidepiece install the machining of locating surface black skin positioning other
Machinable design shape face, installs bottom outlet in processing valve pocket installing hole and valve element and stays allowance, and remaining can respectively be processed structure and press
Design clamped one time completes processing, obtains valve body；The process equipment for adopting is for vertical machining centre, and pacifies in vertical machining centre
Detector is inspected by random samples equipped with Production development；
4) to step 3) in processing obtain valve body be sampled detection, sampling observation rate is not less than 5%, and sample detection is full inspection；
5) in step 4) on the qualified valve body of detection, locating surface face positioning is installed with bottom and machines other machinable designs
Shape face, the process equipment for being adopted is for vertical machining centre, and is provided with Production development sampling observation detection in vertical machining centre
Instrument, and sidepiece installs locating surface and bottom is installed locating surface and positions processing for acted as reference mutual mode；
6) to step 5) in the valve body of completion of processing be sampled detection, sampling observation rate is not less than 5%, and sample detection is full inspection；
7) to step 6) in the qualified valve body of detection integrally carry out phosphatization corrosion protection process；
8) in step 7) in carry out on the valve body that phosphatization corrosion protection is disposed, installing bottom outlet to valve pocket installing hole and valve element carries out the top gem of a girdle-pendant
Hinge polish, top gem of a girdle-pendant hinge three steps of technique point are completed, and valve pocket installing hole and valve element are installed bottom outlet and be respectively on the basis of, mutually it
Between be acted as reference mutual, to ensure its own precision and positional precision each other；
9) to step 8) in the top gem of a girdle-pendant hinge valve body that finishes of polish remove flash removed；
10) to step 9) in go the valve body that flash removed is finished to be sampled detection, sampling observation rate is not less than 5%, and sample detection is complete
Inspection；
11) to step 10) in the qualified valve body of detection carry out cleaning corrosion protection and go magnetic treatment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410715159.1A CN104373405B (en) | 2014-11-29 | 2014-11-29 | Servo valve body and machining method of servo valve body |
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| CN201410715159.1A CN104373405B (en) | 2014-11-29 | 2014-11-29 | Servo valve body and machining method of servo valve body |
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| CN104373405A CN104373405A (en) | 2015-02-25 |
| CN104373405B true CN104373405B (en) | 2017-03-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340425A (en) * | 2018-11-06 | 2019-02-15 | 张林安 | A kind of processing technology of valve body structure |
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|---|---|---|---|---|
| CN110307386B (en) * | 2019-07-17 | 2021-04-20 | 江西艾芬达暖通科技股份有限公司 | Dynamic balance temperature control valve |
| CN110440033B (en) * | 2019-08-15 | 2021-04-13 | 奥工阀门有限公司 | Single-control double-circuit linkage adjustable delay hydraulic valve |
| CN114227521A (en) * | 2021-12-27 | 2022-03-25 | 德阳上川科技有限公司 | Ultra-precise machining process for aluminum alloy die-casting gearbox valve sleeve |
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| CN101324280A (en) * | 2007-06-15 | 2008-12-17 | Smc株式会社 | Manifold-type solenoid valve apparatus having stop valve |
| CN201225418Y (en) * | 2008-07-07 | 2009-04-22 | 南通华东液压铸业有限公司 | Double-proportion valve |
| CN102192341A (en) * | 2010-03-16 | 2011-09-21 | 宝得工厂有限公司 | Valve assembly |
| CN204327625U (en) * | 2014-11-29 | 2015-05-13 | 南京萨伯工业设计研究院有限公司 | Servo valve body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109340425A (en) * | 2018-11-06 | 2019-02-15 | 张林安 | A kind of processing technology of valve body structure |
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