CN109630730A - Clutch booster valve body and processing method and plunger type clutch booster - Google Patents
Clutch booster valve body and processing method and plunger type clutch booster Download PDFInfo
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- CN109630730A CN109630730A CN201811390607.XA CN201811390607A CN109630730A CN 109630730 A CN109630730 A CN 109630730A CN 201811390607 A CN201811390607 A CN 201811390607A CN 109630730 A CN109630730 A CN 109630730A
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- valve body
- clutch booster
- main chamber
- wall
- piston
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0221—Valves for clutch control systems; Details thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The present invention relates to clutch booster fields, disclose a kind of clutch booster valve body and processing method and clutch booster, wherein valve body (1) is cast, the middle part of valve body (1) is equipped with the main chamber (3) for main piston (2) sliding, and the inner wall of main chamber (3) offers the mounting groove (4) for installing seal assembly or/and support component；The hardness of the inner wall of main chamber (3) is greater than HV300；Mounting groove (4) is at least 3, including at least a guiding annular groove (6) for being used to install guide ring (7), first fitting groove (9) for being used to install main piston (2) apron and one for installing the second fitting groove (11) of sealing ring (10).The clutch booster have it is easy for installation, will not permeability, the advantages that guide effect is good, long service life.
Description
Technical field
The present invention relates to clutch booster technical fields, more particularly to clutch booster valve body and processing method and column
Plug clutch booster.
Background technique
The patent of invention of Chinese patent notification number CN101858393B discloses a kind of clutch booster, including with edge
The pneumatic cylinder and hydraulic cylinder operating bar of same axis connection stretch out piston from pneumatic cylinder one end and are placed in pistons in pneumatic cylinders side company
Connecing between operating bar piston other side connection plunger stem flange side and pneumatic cylinder, there is spring piston bar to be inserted into hydraulic cylinder internal control
Valve processed is vertically arranged wherein with hydraulic cylinder axis: it is another between two sealing ring of control valve that the connection of spiracle one end is isolated in control valve
End is communicated with the atmosphere by exhaust outlet；Hydraulic cavities are connected to the sealing of piston rod two in hydraulic cylinder with atmospheric pressure cavity isolation spiracle one end
The other end is communicated with the atmosphere between circle.Setting protection gasket and protection gasket, this kind on the outside of two sealing ring of piston rod of hydraulic cylinder
Sealing structure represents sealing structures most in the market.This kind of structure uses between piston rod and the inner wall of hydraulic cylinder
It needs to install protection gasket, makes that gasket is protected to play the role of sealing, but the structure of this kind of valve body needs to guarantee protection gasket
Between installation accuracy, while assemble after protection gasket need to be fixed using retaining ring, assembly trouble, simultaneously because
This kind of structure directing length is shorter, and piston rod will lead to protection gasket in the process of movement, and there are drift angle phenomenons, to can lead
It causes that permeability occurs, shortens the service life of clutch booster, and since clutch booster is using frequently, sealing can be accelerated to tie
The failure of structure.
Summary of the invention
The present invention needs solid using retaining ring for sealing structure installation is complicated between piston rod and cylinder body in the prior art
It is fixed, the defects of guiding length shorter easy generation drift angle permeability, provide clutch booster valve body and processing method and plunger type
Clutch booster.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals:
Clutch booster valve body, valve body are cast, and the middle part of valve body is equipped with the main chamber for master piston slides, main chamber
Inner wall offer the mounting groove for installing seal assembly or/and support component.The valve body uses cast, and cast is compared
In traditional die casting have many advantages, such as it is machinable be heat-treated, while cast dense internal organization does not have stomata, and
And machining allowance is bigger, guarantees that the main chamber inner wall of valve body processable mounting groove, mounting groove out can be mounted directly sealing ring, so
Extra retaining ring is not needed during the installation process to be fixed.
Preferably, the inner wall hardness that main chamber is used to contact with master piston slides is greater than HV300, the hardness of inner wall is larger,
Not easy to wear between the inner wall and main piston of guarantee main chamber, the inner wall of main chamber also can play guiding role for main piston.
Preferably, mounting groove includes three, respectively for installing the guiding annular groove of guide ring, for installing main piston
First fitting groove of apron and the second fitting groove for installing sealing ring, main piston apron and sealing ring can prevent permeability from rising
It can play the role of double guiding to sealing function, while between the guide ring and main chamber inner wall being arranged, so that apron will not go out
Existing drift angle leads to permeability phenomenon, and oil pressure will not generate pressure to washer, deform washer.
Preferably, further including power-assisted cylinder body, power-assisted cylinder body and valve body are that casting is integrally formed.One casting can guarantee
Size between power-assisted cylinder body and valve body.
The present invention also provides a kind of plunger type clutch booster, including above-mentioned valve body, further include power-assisted cylinder body and after
Valve is moved, is provided with oil inlet in main chamber, the inner wall of main chamber is contacted with master piston slides, and main piston acts on lower edge in oil inlet oil pressure
Main chamber inner wall slides, and is equipped with seal assembly or/and support component in mounting groove.
Preferably, mounting groove includes three, respectively for installing the guiding annular groove of guide ring, for installing main piston
First fitting groove of apron and the second fitting groove for installing sealing ring, guide ring slot position are assembled in the first fitting groove and second
Between slot.
The present invention also provides a kind of processing methods of clutch booster valve body, comprising the following steps: the first step, design
Mold, valve body of casting；Second step, draft clean casting, deburring；Third step processes main chamber using machining, so
Mounting groove is finished out in the inner wall of main chamber afterwards；4th step carries out some or all of progress hardness processing to the inner wall of main chamber；
5th step carries out quality testing.For the present invention in order to solve traditional piston in the process of movement, gasket will receive oil pressure work
Lead to permeability phenomenon with generation drift angle, so the invention devises a kind of novel valve body structure, thus from basic
On solve the permeability phenomenon of piston gasket, extend the service life of valve body.
Preferably, the first step, configuration casting liquid, valve body of casting, the chemical component weight percentage for liquid of casting are as follows: Si:
6.5-7.5%, Mg:0.25-0.45%, Ti:0.08-0.2%, Cu:0-0.1%, Fe:0-0.2%, Mn:0-
0.1%, Pb:0-0.03%, Zn:0-0.1%, Zr:0-0.2%, Sn:0-0.01%, surplus are aluminium, aluminium ingot heating 680
~720 DEG C of meltings form molten aluminum；
Second step will be cast in mold after the refining of casting liquid, slagging-off, degasification, and cooled and solidified is to get valve body；
Valve body is placed in well formula glowing furnace by third step, is warming up to 520~535 DEG C of isothermal holding 5-7h, is then placed in 60 DEG C
To be lauched middle hardening, aging furnace is placed into, 170~180 DEG C of isothermal holding 5-7h is warming up to, comes out of the stove air-cooled, takes out valve body；
Third step, machining processing main chamber, then finish out mounting groove in the inner wall of main chamber；
4th step, valve body machine are put into supersonic wave cleaning machine and clean after adding, the weight proportion of aluminium skimmed milk and clear water is 2:80,
35~45 DEG C of the temperature of cleaning solution scavenging period 7 minutes, takes out valve body, is put into clear water reserviors and impregnates 5 minutes removing cleaning solutions, takes
Valve body out；
5th step, valve body are clamped on hanger, are put into hardening oxidation pond, sulfuric acid concentration (20%~30%), temperature 0-- 3
DEG C, 600~800A of electric current, 20~24V of voltage the time 15-20 minutes, take out valve body, are put into clear water reserviors and impregnate removing in 5 minutes
Hardening oxidation liquid takes out valve body；
Valve body is placed in confining liquid cabinet by the 6th step, and 85~95 DEG C of confining liquid temperature, confining liquid concentration pH value 5.5~
5.8, soaking time 4~6 minutes, it is dry that taking-up is put into boiled water tank, water temperature water boiling, the time 3 minutes or more, takes out air gun and blows
Water removes valve body.Process above devises the production technology of valve body, and the valve body of casting has intensity high, can meet mach
Demand, and anodized ensure that the hardness of main chamber inner wall, to reduce the friction of main piston and inner wall.
Preferably, carrying out hardness treated main chamber inner wall hardness is greater than HV300.
Preferably, mounting groove includes the guiding annular groove for installing guide ring, the first assembly for installing main piston apron
Slot and the second fitting groove for installing sealing ring.
The present invention is due to using above technical scheme, and have following significant technical effect: the present invention abandons biography first
System clutch booster valve body structure, overcomes gasket existing for conventional clutch booster and generates during piston motion
The defect of drift angle, to guarantee that permeability phenomenon will not occur for gasket.And the valve body directly finishes peace in the inner wall of main chamber
Tankage, by the way of assembly pressing by seal assembly and support component pressing in mounting groove, to realize to seal assembly
With the installation of support component, rigging error is not present between each component independently of each other, while also not needing using limit stop ring
It is fixed.
And main chamber inner wall can directly be contacted with piston in the present invention, obviously increase the guiding length of main piston,
It is combined in mounting groove and guide ring is installed, realize double guiding, so as to avoid the generation for leading to permeability due to drift angle phenomenon,
Substantially increase the service life of product.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of valve body.
Fig. 2 is the valve body structure schematic diagram with power-assisted cylinder body.
Fig. 3 is the assembling schematic diagram of clutch booster.
Fig. 4 is the I magnified partial view of Fig. 3.
Fig. 5 is the II magnified partial view of Fig. 3
The toponym that each number designation is referred in attached drawing is as follows: 1-valve body, 2-main pistons, 3-main chambers, 4-peaces
Tankage, 6-guiding annular grooves, 7-guide rings, 8-Piston leather collars, the 9-the first fitting groove, 10-sealing rings, the 11-the second assembly
Slot, 12-power-assisted cylinder bodies, 13-relay valves, 14-oil inlets, 15-air inlets, 16-relay pistons, 17-gas channels,
18-power-assisted chambers, 19-valve assemblies, 20-exhaust outlets, 21-boosting pistons, 22-A chambers, 23-B chambers, 24-C chambers, 28-
Push rod, 26-return gas channels, 30-relay valve bodies.
Specific embodiment
Present invention is further described in detail with embodiment with reference to the accompanying drawing.
Embodiment 1
As shown in Figure 1, clutch booster valve body, valve body 1 is cast, and cast is compared to traditional die casting valve body
1 has the advantages that heat treatment can be used, pore-free, machining allowance is big, this solves above-mentioned technical problem to the present invention and provides base
Plinth condition.The middle part of valve body 1 is equipped with the main chamber 3 slided for main piston 2, and the inner wall of main chamber 3 is offered for installing sealing group
Part and the mounting groove of support component 4.In the present embodiment, mounting groove 4 is annular groove, and annular groove is convenient for machining.In order to guarantee
The inner wall of main chamber 3 can satisfy the demand of piston Yu interior wall friction, and the hardness of the inner wall of main chamber 3 after processing is greater than HV300, this
In 3 inner wall of main chamber reach the part of HV300 and should be at least the face that 2 stroke of main piston is contacted, wherein in the present embodiment in main chamber 3
The processing method that wall hardness is strengthened is anodic oxidation.
Wherein for mounting groove 4 to be provided with slotted general designation on 3 inner wall of main chamber, the number of mounting groove 4 is 3 in the present embodiment
It is a, including guiding annular groove 6, one for being used to install guide ring 7 for installing 9 and of the first fitting groove of 2 apron of main piston
One is used to install the second fitting groove 11 of sealing ring 10, wherein guiding annular groove 6 is provided with the first fitting groove 9 and the second fitting groove
Between 11.Oil inlet 14 is offered on valve body 1, is connected in oil inlet 14 and main chamber 3.The relay valve of relay valve 13 in the present embodiment
The integrated cast molding of the valve body 1 of body 30 and main piston 2.
Embodiment 2
As shown in Fig. 2, being in place of the present embodiment and the difference of embodiment 1: in the present embodiment, main chamber 3 being divided for pressure
Chamber 300 and directed cavity 301, the inner wall of directed cavity 301 and 2 sliding contact of main piston make the guiding of main piston 2 to realize
With；The cavity cross-section area of pressure chamber 300 is greater than the area of section of main piston 2, so that oil pressure can pass through main piston and pressure
Gap between power chamber enters at the oil inlet of relay valve 31.Valve body 1 is also connected with power-assisted cylinder body 12 and relay valve body 30, power-assisted
Cylinder body 12 and the casting of relay valve body 30 and valve body 1 are integrally formed, and the valve chamber of relay valve body 30 is connected to main chamber 3, relay valve body 30
Valve chamber be connected to pressure chamber 300.
Embodiment 3
As shown in Figures 1 to 5, a kind of plunger type clutch booster is present embodiments provided, including as described in example 2
Valve body 1 is provided with main piston 2 in main chamber 3, and mounting groove 4 includes three, respectively for install guide ring 7 guiding annular groove 6,
The second fitting groove 11 for installing the first fitting groove 9 of 2 apron of main piston and for installing sealing ring 10 is oriented to annular groove 6
Between the first fitting groove 9 and the second fitting groove 11, it is provided with Piston leather collar 8 in the first fitting groove 9, is set in the second fitting groove 11
It is equipped with sealing ring 10, is oriented in annular groove 6 and guide ring 7 is installed, Piston leather collar 8, guide ring 7 and the independent assembly of sealing ring 10 are kept away
The poor sealing due to caused by rigging error is exempted from.The 301 inner wall sliding contact of directed cavity of main piston 2 and main chamber 3, thus main chamber
3 inner wall plays guiding role, increases the guiding length of piston significantly, so that main piston 2 be avoided to deposit during the motion
The case where drift angle is so as to cause apron permeability, while guide ring 7 plays guiding role to main piston 2, to realize double guiding
The guide effect of piston is further improved, so that the service life of entire valve body 1 and sealing structure greatly promotes.Also one on valve body 1
Body formed have a relay valve body 30, relay valve body 30 be equipped with air inlet 15 with the hydraulic fluid port that is connected to pressure chamber 300, relay valve body 30
Relay piston 16 is provided in valve chamber, the side wall of servo valve chamber 310 offers the gas channels 17 of connection power-assisted chamber 18, and servo is living
The bottom of plug 16 is provided with valve assembly 19, and valve assembly 19 is used to control the connection of air inlet 15 Yu power-assisted chamber 18, and valve is total
19 lower part is provided with exhaust outlet 20.Boosting piston 21 is provided in power-assisted cylinder body 12, boosting piston 21 and main piston 2 are solid
Even.
When depressing clutch pedal, oil pressure is established in master cylinder body and oil liquid is sent to the oil inlet 14 of booster,
Into the pressure chamber 300 of main chamber 3, the main chamber 3 in 2 left side of main piston is named as A chamber 22, a part of oil liquid pushes main piston 2 right
It moves, boosting piston 21 divides power-assisted chamber 18 for B chamber 23 and C chamber 24, is connected with push rod 28, push rod 28 on the right side of boosting piston 21
Couple with clutch separation yoke, drives clutch release fork shaft；When main piston 2 is shifted to the right to servo chamber, sub-fraction oil liquid
Servo valve chamber 310 is entered by the gap between main piston 2 and pressure chamber 300, relay piston 16 is pushed, opens valve assembly
19, so that compressed air reaches B chamber 23 from air inlet 15, allows compressed air into the space on the left of power-assisted the cylinder piston, push away
Dynamic servo-cylinder piston advances forward, and master cylinder piston, push rod 28 is driven to move to right together, increase the power of clutch separation, significantly
The pedal force for alleviating clutch plays the role of power-assisted, while the outside of valve body 1 is provided with return gas channel 26, return gas channel 26
One end be connected to exhaust outlet 20, the other end is connected to C chamber 24, and during boosting piston 21 moves to right, the air of C chamber 24 passes through
Return gas channel 26 is connected to from exhaust outlet 20.Return spring 31 is wherein provided in C chamber 24, one end of return spring 31, which contradicts, to be helped
On power piston 21, the other end is contradicted on the end cap of power-assisted cylinder body 12, and after removing oil pressure, relay piston 16 is removed total to valve
At 19 pressure, 19 return of valve assembly cuts off the connection of air inlet 15 and B chamber 23, while return spring 31 is by boosting piston 21
A left side pushes away, and the air in B chamber 23 is discharged by gas channels 17 from exhaust outlet 20.
Embodiment 4
It is in place of the present embodiment and the difference of embodiment 3, the outer surface of main piston 2 also passes through hardness processing, to protect
It demonstrate,proves 3 inner wall of main chamber and main piston 2 is not in wear phenomenon.
Embodiment 5
Present embodiment discloses the processing methods of valve body 1 in embodiment 1.
The following steps are included: the first step, designs mold, valve body 1 of casting；Second step, draft clean casting, are gone
Burr, roughing processing；Third step processes main chamber 3 using machining, then finishes out mounting groove 4 in the inner wall of main chamber 3；
4th step carries out some or all of progress hardness processing to the inner wall of main chamber 3；5th step carries out quality testing.The above are add
The main work step of work, specifically are as follows:
The first step, configuration casting liquid, valve body 1 of casting, the chemical component weight percentage for liquid of casting are as follows: Si:6.5-
7.5%, Mg:0.25-0.45%, Ti:0.08-0.2%, Cu:0-0.1%, Fe:0-0.2%, Mn:0-0.1%, Pb:
0-0.03%, Zn:0-0.1%, Zr:0-0.2%, Sn:0-0.01%, surplus are aluminium, and aluminium ingot heats 680~720 DEG C and melts
Refining forms molten aluminum；
Second step will be cast in mold after the refining of casting liquid, slagging-off, degasification, and cooled and solidified is to get valve body 1；
Valve body 1 is placed in well formula glowing furnace by third step, is warming up to 520~535 DEG C of isothermal holding 5-7h, is then placed in 60
DEG C to be lauched middle hardening, aging furnace is placed into, 170~180 DEG C of isothermal holding 5-7h is warming up to, comes out of the stove air-cooled, takes out valve body 1,
Guarantee the integral strength of valve body 1,
Third step, machining processing main chamber 3, then finish out mounting groove 4, the number of mounting groove 4 in the inner wall of main chamber 3
It is three, respectively for installing the guiding annular groove 6 of guide ring 7, the first fitting groove 9 for installing 2 apron of main piston and using
In the second fitting groove 11 of installation sealing ring 10, annular groove 6 is oriented between the first fitting groove 9 and the second fitting groove 11；
4th step, 1 machine of valve body are put into supersonic wave cleaning machine and clean after adding, the weight proportion of aluminium skimmed milk and clear water is 2:
80,35~45 DEG C of the temperature of cleaning solution scavenging period 7 minutes, takes out valve body 1, is put into clear water reserviors and impregnates the cleaning of removing in 5 minutes
Liquid takes out valve body 1；
5th step, valve body 1 are clamped on hanger, are put into hardening oxidation pond, sulfuric acid concentration (20%~30%), temperature 0--
3 DEG C, 600~800A of electric current, 20~24V of voltage, the time 15-20 minutes, valve body 1 is taken out, clear water reserviors is put into and impregnates 5 minutes clearly
Except hardening oxidation liquid, valve body 1 is taken out；The announcement guarantees the hardness of 1 inner wall of valve body, to guarantee that the inner wall of main chamber 3 can and be led
2 sliding contact of piston, it is not easy to wear；
Valve body 1 is placed in confining liquid cabinet by the 6th step, and 85~95 DEG C of confining liquid temperature, confining liquid concentration pH value 5.5~
5.8, soaking time 4~6 minutes, it is dry that taking-up is put into boiled water tank, water temperature water boiling, the time 3 minutes or more, takes out air gun and blows
Water removes valve body 1.Guarantee the antiseptic property of valve body 1.
Wherein relay valve body 30 and the integrated cast molding of valve body 1, when assembly, it is only necessary to by main piston 2, relay piston 16 etc.
Component is installed to corresponding position, has many advantages, such as that easy for installation, assembly precision is high.
Embodiment 6
It is in place of the present embodiment and the difference of embodiment 5, valve body 1 is also integrally cast with power-assisted cylinder body 12.
In short, the foregoing is merely presently preferred embodiments of the present invention, it is all according to equalization made by scope of the present invention patent
Variation and modification, shall all be covered by the patent of the invention.
Claims (10)
1. clutch booster valve body, it is characterised in that: valve body (1) is cast, and the middle part of valve body (1), which is equipped with, is used for main piston
(2) main chamber (3) slided, the inner wall of main chamber (3) offer the mounting groove (4) for installing seal assembly or/and support component.
2. clutch booster valve body according to claim 1, it is characterised in that: main chamber (3) include pressure chamber (300) and
Directed cavity (301), the side of directed cavity (301) and main piston (2) sliding contact, the cavity cross-section area of pressure chamber (300) are big
Area of section in main piston (2).
3. clutch booster valve body according to claim 1, it is characterised in that: main chamber (3) is used for sliding with main piston (2)
The inner wall hardness of dynamic contact is greater than HV300.
4. clutch booster valve body according to claim 4, it is characterised in that: mounting groove (4) is at least three, at least
Including a guiding annular groove (6) for being used to install guide ring (7), one for installing the first fitting groove of main piston (2) apron
(9) and one for installing the second fitting groove (11) of sealing ring (10).
5. clutch booster valve body according to claim 1, it is characterised in that: valve body (1) is also connected with power-assisted cylinder body
(12) it is integrally formed with relay valve body (30), power-assisted cylinder body (12) or/and relay valve body (30) with valve body (1) casting.
6. a kind of plunger type clutch booster, it is characterised in that: including valve body described in claims 1 or 2 or 3 or 4 (1), also
It including power-assisted cylinder body (12) and relay valve (13), is provided in main chamber (3) oil inlet (14), the inner wall and main piston of main chamber (3)
(2) sliding contact, main piston (2) slide under the effect of oil inlet (14) oil pressure along main chamber (3) inner wall, installation in mounting groove (4)
There are seal assembly or/and support component.
7. a kind of plunger type clutch booster according to claim 6, it is characterised in that: the outer wall of main piston (2) it is hard
Degree is greater than HV300.
8. a kind of plunger type clutch booster according to claim 6, it is characterised in that: mounting groove (4) includes three, point
It Wei not be for installing the guiding annular groove (6) of guide ring (7), the first fitting groove (9) for installing main piston (2) apron and being used for
Second fitting groove (11) of sealing ring (10) is installed, guiding annular groove (6) be located at the first fitting groove (9) and the second fitting groove (11) it
Between, it is provided with Piston leather collar (8) in the first fitting groove (9), is provided with sealing ring (10) in the second fitting groove (11), be oriented to annular groove
(6) guide ring (7) are installed in.
9. a kind of processing method of clutch booster valve body, it is characterised in that: valve body is claims 1 or 2 or 3 or 4 or 5 institutes
Any valve body stated, the processing method of valve body is the following steps are included: the first step, designs mold, casting valve body (1)；Second step pulls out
Mould cleans casting, deburring；Third step processes main chamber (3) using machining, then in the inner wall finishing of main chamber (3)
Work goes out mounting groove (4)；4th step carries out some or all of progress hardness processing to the inner wall of main chamber (3)；5th step carries out
Quality testing.
10. a kind of processing method of clutch booster valve body according to claim 9, it is characterised in that: the first step is matched
Casting liquid is set, is cast valve body (1), the chemical component weight percentage for liquid of casting are as follows: Si:6.5-7.5%, Mg:0.25-
0.45%, Ti:0.08-0.2%, Cu:0-0.1%, Fe:0-0.2%, Mn:0-0.1%, Pb:0-0.03%, Zn:0-
0.1%, Zr:0-0.2%, Sn:0-0.01%, surplus are aluminium, and aluminium ingot heats 680~720 DEG C of meltings and forms molten aluminum；
Second step will be cast in mold after the refining of casting liquid, slagging-off, degasification, and cooled and solidified is to get valve body (1)；
Valve body (1) is placed in well formula glowing furnace by third step, is warming up to 520~535 DEG C of isothermal holding 5-7h, is then placed in 60 DEG C
To be lauched middle hardening, aging furnace is placed into, 170~180 DEG C of isothermal holding 5-7h is warming up to, comes out of the stove air-cooled, is taken out valve body (1)；
Third step, machining processing main chamber (3), then finish out mounting groove (4) in the inner wall of main chamber (3)；
4th step, valve body (1) machine are put into supersonic wave cleaning machine and clean after adding, the weight proportion of aluminium skimmed milk and clear water is 2:80,
35~45 DEG C of the temperature of cleaning solution scavenging period 7 minutes, is taken out valve body (1), is put into clear water reserviors and impregnates 5 minutes removing cleaning solutions,
It takes out valve body (1)；
5th step, valve body (1) are clamped on hanger, are put into hardening oxidation pond, sulfuric acid concentration (20%~30%), temperature 0-- 3
DEG C, 600~800A of electric current, 20~24V of voltage the time 15-20 minutes, take out valve body (1), are put into clear water reserviors and impregnate 5 minutes clearly
Except hardening oxidation liquid, take out valve body (1)；
Valve body (1) is placed in confining liquid cabinet by the 6th step, and 85~95 DEG C of confining liquid temperature, confining liquid concentration pH value 5.5~
5.8, soaking time 4~6 minutes, it is dry that taking-up is put into boiled water tank, water temperature water boiling, the time 3 minutes or more, takes out air gun and blows
Water removes valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811390607.XA CN109630730A (en) | 2018-11-21 | 2018-11-21 | Clutch booster valve body and processing method and plunger type clutch booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811390607.XA CN109630730A (en) | 2018-11-21 | 2018-11-21 | Clutch booster valve body and processing method and plunger type clutch booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109630730A true CN109630730A (en) | 2019-04-16 |
Family
ID=66068699
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811390607.XA Pending CN109630730A (en) | 2018-11-21 | 2018-11-21 | Clutch booster valve body and processing method and plunger type clutch booster |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111015083A (en) * | 2019-11-14 | 2020-04-17 | 浙江格雷特科技股份有限公司 | Processing technology of clutch booster shell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4274521A (en) * | 1978-03-23 | 1981-06-23 | Benditalia S.P.A. | Synchronized hydropneumatic control of clutch and gearbox |
| CN2905574Y (en) * | 2005-12-01 | 2007-05-30 | 陆奇文 | Diaphragm type gas-liquid jointed brake device |
| CN101445879A (en) * | 2009-01-13 | 2009-06-03 | 周岳建 | Method for producing water meter casing by using corrosion-resisting aluminum casting alloy and products thereof |
| CN101761593A (en) * | 2010-01-13 | 2010-06-30 | 蒋伟荣 | Internal recycle booster |
-
2018
- 2018-11-21 CN CN201811390607.XA patent/CN109630730A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4274521A (en) * | 1978-03-23 | 1981-06-23 | Benditalia S.P.A. | Synchronized hydropneumatic control of clutch and gearbox |
| CN2905574Y (en) * | 2005-12-01 | 2007-05-30 | 陆奇文 | Diaphragm type gas-liquid jointed brake device |
| CN101445879A (en) * | 2009-01-13 | 2009-06-03 | 周岳建 | Method for producing water meter casing by using corrosion-resisting aluminum casting alloy and products thereof |
| CN101761593A (en) * | 2010-01-13 | 2010-06-30 | 蒋伟荣 | Internal recycle booster |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111015083A (en) * | 2019-11-14 | 2020-04-17 | 浙江格雷特科技股份有限公司 | Processing technology of clutch booster shell |
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