CN103477081B - The manufacture method of casing and vacuum pump - Google Patents
The manufacture method of casing and vacuum pump Download PDFInfo
- Publication number
- CN103477081B CN103477081B CN201280008904.8A CN201280008904A CN103477081B CN 103477081 B CN103477081 B CN 103477081B CN 201280008904 A CN201280008904 A CN 201280008904A CN 103477081 B CN103477081 B CN 103477081B
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- cylinder
- casing
- buss
- chassis body
- cylinder buss
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- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 230000002093 peripheral Effects 0.000 claims description 36
- 238000007906 compression Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 3
- 230000037237 body shape Effects 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
- 239000011148 porous material Substances 0.000 description 12
- 238000007747 plating Methods 0.000 description 6
- 210000002445 Nipples Anatomy 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241001442589 Convoluta Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- -1 aluminum.Thus Chemical class 0.000 description 1
- 230000000903 blocking Effects 0.000 description 1
- 108091006028 chimera Proteins 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Abstract
The present invention prevents the decline of the durability of vacuum pump by the damage of simple structure suppression rotor and side plate.The present invention includes: the motlten metal be arranged on mould by the cylinder buss forming cylinder chamber, made chassis body shape carries out the operation (step S2) cast, group enters cylinder buss integratedly；And processing runs through cylinder buss and chassis body the operation (step S3) with the air inlet connected in cylinder chamber and steam vent integratedly.
Description
Technical field
The casing of cylinder chamber that the rotary compression component that the present invention relates to include being driven by driving machine carries out sliding
Manufacture method and include the vacuum pump of this casing.
Background technology
It is known that, conventionally, include being arranged on the casing on the driving machines such as electro-motor and in the cylinder chamber of this casing
The vacuum pump of the rotary compression component rotated is carried out by driving machine.In this vacuum pump, by by driving
Machine drives rotary compression component in cylinder chamber, it is possible to realize vacuum, and such as, this vacuum pump is mounted on
In the enging cabin of automobile, be used to vacuum for making brake assistor work (for example, referring to
Patent documentation 1).
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2003-222090 publication
Summary of the invention
The problem that invention is to be solved
Therefore, situation about cannot expand from installation space, it is desirable to this vacuum pump miniaturization, such as, structure
Find out by the cylinder buss forming cylinder chamber is pressed in chassis body, thus realize the rotary shaft side of casing
The scheme of the miniaturization of size upwards.
But, in such an embodiment, processing connects on perisporium air inlet and aerofluxus to be manufactured with cylinder chamber
Hole and implement the cylinder of Surface hardening treatment realized by electroless plating process etc. at the inner surface of this cylinder chamber
Lining, and this cylinder buss is pressed in the hole portion of chassis body.Therefore, after press-in cylinder buss,
Need to carry out the inching that the position making air inlet or steam vent is consistent with the assigned position of chassis body, and
During press-in, the edge part of air inlet or steam vent makes a part for chassis body produce burr sometimes, needs to add
This burr is cleared up in processing, creates the number of working processes and increases such problem.
Therefore, it is an object of the invention to provide the miniaturization achieved on axially and achieve the number of working processes
The manufacture method of the casing reduced and include the vacuum pump of this casing.
Means for solving the above
To achieve these goals, the present invention is the manufacture method of a kind of casing, and described casing includes by driving machine
The rotary compression component driven carries out the cylinder chamber slided, and the manufacture method of described casing is characterised by, bag
Include following operation: be arranged on mould by the cylinder buss forming described cylinder chamber, make chassis body become
The motlten metal of shape casts, and group enters described cylinder buss integratedly；And processing runs through described integratedly
Cylinder buss and described chassis body and with the air inlet connected in described cylinder chamber and steam vent.
According to this composition, owing to, after group enters in chassis body integratedly by cylinder buss, processing and passing through integratedly
Wear this cylinder buss and chassis body and with the air inlet connected in cylinder chamber and steam vent, therefore need not vapour
The adjustment operation of the hole site of cylinder liner and chassis body and the additional processing of chassis body such that it is able to
The minimizing of the number of working processes when realization manufactures.Further, since entered the state of chassis body at cylinder buss by group
Lower manufacture casing, therefore, it is possible to the miniaturization realized in the axial direction of this casing.
In this composition, it is characterised in that include following operation: use the metal harder than described cylinder buss
Inner peripheral surface overlay film to the described cylinder buss being machined with described air inlet and described steam vent.According to this composition,
Even for the casing during group has entered chassis body integratedly by cylinder buss, it is also possible to simply form hardness
The highest sliding surface.
It addition, it is a feature of the present invention that and include following operation: group enter described cylinder buss operation it
Before, the outer peripheral face of described cylinder buss shapes for preventing the rotation of this cylinder buss and the unit of abjection.
According to this composition, even if cylinder buss uses the metal that thermal coefficient of expansion is different with chassis body, due at vapour
It is pre-formed with on the outer peripheral face of cylinder liner and prevents from rotating and the unit of abjection, therefore, with this cylinder liner of press-in
The method of set is compared, it is possible to prevent rotation and the abjection of cylinder buss simply.
It addition, it is a feature of the present invention that as the unit preventing described rotation and abjection, at described cylinder liner
Forming spiral groove on the outer peripheral face of set.According to this composition, it is possible to make simply and prevent from rotating and the vapour of abjection
Cylinder liner.
It addition, the present invention is a kind of vacuum pump, described vacuum pump includes the casing being installed on driving machine, and
And in this casing, include that the rotary compression component driven by described driving machine carries out the cylinder chamber slided, described
Vacuum pump is characterised by, described casing includes being entered by group integratedly forming institute in cast chassis body
State the cylinder buss of cylinder chamber, and include running through described cylinder buss and described chassis body integratedly and with institute
The air inlet connected in stating cylinder chamber and steam vent.
Invention effect
According to the present invention, owing to, after group enters in chassis body integratedly by cylinder buss, processing and passing through integratedly
Wear this cylinder buss and chassis body and with the air inlet connected in cylinder chamber and steam vent, therefore need not vapour
The adjustment operation of the hole site of cylinder liner and chassis body and the additional processing of chassis body such that it is able to
The minimizing of the number of working processes when realization manufactures.Further, since entered the state of chassis body at cylinder buss by group
Lower manufacture casing, therefore, it is possible to the miniaturization realized in the axial direction of this casing.
Accompanying drawing explanation
Fig. 1 is the use of the synoptic diagram of the brake unit of vacuum pump of the present embodiment.
Fig. 2 is the sidepiece partial sectional view of vacuum pump.
Fig. 3 is the figure of the front side vacuum pump from vacuum pump.
Fig. 4 is the flow chart of the manufacturing step illustrating casing.
Fig. 5 is that preventing of illustrating that cylinder buss outer peripheral face formed rotates and the sidepiece of spiral fluted casing of abjection
Partial sectional view.
Detailed description of the invention
Hereinafter, preferred embodiment illustrate the present invention relates to referring to the drawings.
Fig. 1 is that the vacuum pump 1 embodiments of the present invention related to is used as the general of the brake unit 100 of negative pressure source
Scheme.Front brake 2A that brake unit 100 such as includes being installed on the left and right front-wheel of the vehicles such as automobile,
2B and be arranged on rear brake 3A on the trailing wheel of left and right, 3B.Brake is passed through in these each brakes respectively
Pipe arrangement 9 is connected with master cylinder 4, makes each braking by the oil pressure come from master cylinder 4 conveying via brake pipe arrangement 9
Device works.
It addition, brake unit 100 also includes brake booster (the braking reinforcement dress linked with brake pedal 5
Put) 6, this brake booster 6 is connected in series with vacuum tank 7 and vacuum pump 1 via air line 8.System
Dynamic assistor 6 is the device utilizing the negative pressure in vacuum tank 7 that the legpower of brake pedal 5 carries out reinforcement,
Moved by the piston (not shown) making master cylinder 4 with the least legpower and sufficient braking energy can be produced.
Vacuum pump 1 is configured in the enging cabin of vehicle, is arranged to outside vehicle by the air in vacuum tank 7
Go out, in making this vacuum tank 7, be in vacuum state.Additionally, the range of the vacuum pump 1 for automobile etc.
For example,-60kPa to-80kPa.
Fig. 2 is the sidepiece partial sectional view of vacuum pump 1, and Fig. 3 is front side (Fig. 2 of the vacuum pump 1 from Fig. 2
In right side) observe the figure of vacuum pump 1 of Fig. 2.But, Fig. 3 illustrates to illustrate cylinder chamber S's
Structure and state after the parts such as pump cover 24, side plate 26 are unloaded.It addition, below, for convenience of description,
The direction the most indicated by an arrow on the top of Fig. 2 and Fig. 3 is the most left up and down as represent vacuum pump 1
Right direction illustrates.It addition, fore-and-aft direction is the most axially, left and right directions is also referred to as width.
As in figure 2 it is shown, vacuum pump 1 includes electro-motor (driving machine) 10 and is made by this electro-motor 10
The pump main body 20 being operated for driving source, these electro-motors 10 and pump main body 20 are linking integratedly
Fixed under state and be bearing on the vehicle body of automobile etc..
Electro-motor 10 has the big of an end (front end) from the casing 11 being shaped generally as drum
The output shaft (rotary shaft) 12 that cause center extends to pump main body 20 side (front side).Output shaft 12 is conduct
Drive the axle of the drive shaft function of pump main body 20, and with the center of rotation X1 extended along the longitudinal direction be
Benchmark rotates.The leading section 12A of output shaft 12 is formed splined shaft, and with in pump main body 20
Rotor 27 axially through axis hole 27A a part on formed spline 27D engaging, output shaft 12
With rotor 27 can link in the way of rotating integrally.
Electro-motor 10 is arranged to: make output shaft 12 in Fig. 3 by the connection of power supply (diagram is slightly)
Arrow R direction (counterclockwise) rotate, thus make rotor 27 to phase centered by center of rotation X1
Equidirectional (arrow R direction) rotates.
Casing 11 includes the chassis body 60 being formed as there is round-ended cylinder shape and blocks this chassis body 60
The lid 61 of opening, the circumference 60A of chassis body 60 bends laterally and is formed.Lid 61 includes circle
Plate portion (wall) 61A, cylindrical portion 61B and bending section 61C also form as one, described plectane portion 61A
The opening being formed as diameter and chassis body 60 is substantially the same, and described cylindrical portion 61B is with this plectane portion 61A's
Periphery connects and embeds in the inner peripheral surface of chassis body 60, and described bending section 61C is to make this cylindrical portion 61B
Periphery bend laterally and formed, plectane portion 61A and cylindrical portion 61B enter in chassis body 60, curved
Pars convoluta 61C abuts with the circumference 60A of chassis body 60 and is fixed.Thus, in electro-motor 10,
Being caved in inner side by an end (front end) of casing 11 and form embedded hole portion 63, pump main body 20 is led to
Cross concavo-convex being fitted together to be installed in embedded hole portion 63.
It addition, the substantial middle of plectane portion 61A be formed through hole 61D that output shaft 12 runs through and
The circular bearing cage 61E extended to the inner side of chassis body 60 around this through hole 61D,
The inner peripheral surface 61F of this bearing cage 61E keeps the front side of above-mentioned output shaft 12 is carried out axle supporting
The foreign steamer of bearing 62.
As in figure 2 it is shown, pump main body 20 includes: be fitted to be formed in the front side of the casing 11 of electro-motor 10
Embedded hole portion 63 in chassis body 22；In being configured in this chassis body 22 and form cylinder chamber S's
Cylinder buss 23；And the pump cover 24 of this chassis body 22 is covered from front side.In the present embodiment, bag
Include chassis body 22 and cylinder buss 23, thus constitute the casing 31 of vacuum pump 1.
Chassis body 22 such as uses the metal material that the heat conductivity such as aluminum are high, as it is shown on figure 3, chassis body 22
It is formed substantially the longest centered by above-mentioned center of rotation X1 from the shape of front side
General rectangular.It is formed with and is arranged on the cylinder chamber S on this chassis body 22 on the top of chassis body 22
The intercommunicating pore 22A of interior connection, in this intercommunicating pore 22A, press-in sucks nipple 30.As in figure 2 it is shown,
This suction nipple 30 is upwardly extending straight tube, and connects at one end 30A of this suction nipple 30
Connect for from external equipment (such as, vacuum tank 7(with reference to Fig. 1)) pipe of supplying negative voltage air or pipeline.
Chassis body 22 is formed the hole portion 22B on the basis of the axle center X2 to extend along the longitudinal direction, should
Hole portion 22B is entered the cylinder buss 23 being formed as cylindric by group.Specifically, by by cylinder buss
To this die casting under 23 states being fixed on mould, cast the machine after this cylinder buss 23 one group being entered
Shell main body 22(casing 31).The center of rotation X1 of the output shaft 12 of axle center X2 and above-mentioned electro-motor 10
Parallel and eccentric relative to center of rotation X1 oblique upper to the left as shown in Figure 2.In this configuration, axle center
X2 is eccentric so that the outer peripheral face 27B of the rotor 27 centered by center of rotation X1 with axle center X2 as base
The inner peripheral surface 23A contact of the accurate cylinder buss 23 formed.
Cylinder buss 23 uses the metal material (be in the present embodiment ferrum) identical with rotor 27 to be formed,
The inner peripheral surface 23A of this cylinder buss 23 such as implements the Surface hardening treatment such as hard chromium plating, in thus making
The hardness of side face (sliding surface) 23A improves.
In the present embodiment, by cylinder buss 23 one group is entered in chassis body 22, it is possible at machine
Cylinder buss 23 is accommodated in the length range in direction, therefore, it is possible to prevent this cylinder buss before and after shell main body 22
23 highlight from chassis body 22 such that it is able to realize the miniaturization of chassis body 22.
It addition, chassis body 22 is formed by heat conductivity material more higher than the heat conductivity of rotor 27.Thus,
Rotor 27 and blade 28 rotate produced heat when driving can be quickly transferred to chassis body 22, thus
Can dispel the heat fully from chassis body 22.
Cylinder buss 23 is formed link above-mentioned chassis body 22 intercommunicating pore (air inlet) 22A and
Opening (air inlet) 23B in cylinder chamber S, has passed through to suck the air of nipple 30 via intercommunicating pore
22A, opening 23B are provided in cylinder chamber S.It addition, at chassis body 22 and cylinder buss 23 times
Portion is provided with steam vent 22C, 23C, and steam vent 22C, 23C run through described chassis body 22 and cylinder buss
23 and will in cylinder chamber S compression air discharge.In the present embodiment, described intercommunicating pore 22A, open
Mouth 23B is configured on identical axle center across cylinder chamber S with steam vent 22C, 23C, for instance, it is possible to logical
Cross the Drilling operation once that the upper surface side from chassis body 22 carries out to be formed.
It is each configured with blocking the side plate 25,26 of the opening of cylinder chamber S in the rear end of cylinder buss 23 and front end.
The internal diameter that the diameter of described side plate 25,26 is set than the inner peripheral surface 23A of cylinder buss 23 is big, described
Side plate 25,26 by wave washer 25A, 26A force and be pushed into respectively cylinder buss 23 front end and after
End.Thus, the inner side of cylinder buss 23 is except being formed and sucking the opening 23B that nipple 30 connects
And beyond steam vent 23C, 22C, it is also formed with the cylinder chamber S sealed.In addition it is also possible to arrange sealing ring
Replace wave washer 25A, 26A.
Rotor 27 it is configured with in cylinder chamber S.The center of rotation X1 that rotor 27 has along electro-motor 10 prolongs
The cylindrical shape stretched, and there is the axis hole 27A of the output shaft 12 inserting the drive shaft as pump main body 20, and
And on the position separated diametrically with this axis hole 27A, multiple gathering sill 27C using by axis hole 27A as
The equiangularly spaced interval in the circumferential at center and arrange.In a part of above-mentioned axis hole 27A, formed
The spline 27D that the splined shaft having and arrange on the leading section 12A of output shaft 12 engages, and rotor 27 He
Output shaft 12 is carried out spline connection.
In the present embodiment, on the front end face of rotor 27, being formed around and this axle at axis hole 27A
Hole 27A compares the columned recess 27F of enlarged diameter, at the output shaft extended in this recess 27F
The front end of 12 is provided with stop nut 70, limits rotor 27 to output shaft 12 by this stop nut 70
Front move.
Before and after rotor 27, the length in direction is set to the length of the cylinder chamber S with cylinder buss 23, i.e.,
And the distance between the inner surface relative to each other of above-mentioned two side plates 25,26 is generally equalized, and rotor
Generally closed off between 27 and side plate 25,26.
It addition, the external diameter of rotor 27 is set to as shown in Figure 3: the outer peripheral face 27B of rotor 27 and cylinder
The part being positioned at right obliquely downward on the inner peripheral surface 23A of lining 23 keeps small gap.Thus, by side
In the cylinder chamber S that plate 25,26 divides, as it is shown on figure 3, at the outer peripheral face 27B of rotor 27 and cylinder liner
The space of crescent shape is constituted between the inner peripheral surface 23A of set 23.
Rotor 27 is provided with multiple (being five the in this example) blade 28 in the space dividing crescent shape.
Blade 28 is formed tabular, and before and after blade 28, the length in direction is in the same manner as rotor 27, is set to
And the distance between the inner surface relative to each other of two side plates 25,26 is generally equalized.These blades 28 with
From the gathering sill 27C being arranged on rotor 27, mode with easy access configures.Each blade 28 is along with turning
The rotation of son 27, highlights along gathering sill 27C, before making blade 28 under the influence of centrifugal force laterally
End abuts with the inner peripheral surface 23A of cylinder buss 23.Thus, the space of above-mentioned crescent shape be divided into by
Two blades adjacent to each other 28,28, the outer peripheral face 27B of rotor 27 and the inner circumferential of cylinder buss 23
Five discharge chambe P that face 23A surrounds.These discharge chambes P is along with the rotor of the rotation with output shaft 12
27 rotations to arrow R direction, rotate to equidirectional, and the volume of these discharge chambes P is attached at opening 23B
Nearly increase, on the other hand, reduces near steam vent 23C.That is, by rotor 27, the rotation of blade 28,
The air being inhaled into a discharge chambe P from opening 23B along with the rotation of rotor 27 carry out rotating same
Time compressed, and from steam vent 23C discharge.In this configuration, including rotor 27 and multiple blade 28,
Thus constitute rotary compression component.
In this configuration, as in figure 2 it is shown, cylinder buss 23 with the axle center X2 of this cylinder buss 23 relative to
The mode of center of rotation X1 oblique upper to the left bias is entered in chassis body 22 by group.Therefore, casing master
In body 22, it is possible to guarantee the biggest space on the direction in opposite direction with cylinder buss 23 bias, and
And circumference along cylinder buss 23 is formed with the expansion connected with steam vent 23C, 22C within this space
Room 33.
Expanding chamber 33 is formed from the lower section of cylinder buss 23 until the top of output shaft 12, along this vapour
The biggest closing space of the circumference of cylinder liner 23, and with the air vent 24A being formed on pump cover 24 even
Logical.Flow into the compressed air in this expanding chamber 33 expand in this expanding chamber 33, disperse and with this expanding chamber
The next door of 33 is collided thus diffuse-reflectance is occurred.Thus, compressed-air actuated sound energy attenuation, therefore, it is possible to the row of realization
Noise during gas and the reduction of vibration.
Pump cover 24 is configured on the side plate 26 of front side via wave washer 26A, and uses bolt 66 to be consolidated
It is scheduled on chassis body 22.As it is shown on figure 3, seal groove 22D is to surround cylinder buss 23 and expanding chamber 33
Mode be formed on the front surface of chassis body 22, in this seal groove 22D, be configured with ring-type sealing
Part 67(Fig. 2).On pump cover 24, the position corresponding with expanding chamber 33 is provided with air vent 24A.
This air vent 24A is outside (outside of vacuum pump 1) for the air being flowed into expanding chamber 33 is discharged to device,
This air vent 24A is provided with for preventing air to the check-valves 29 of adverse current in pump outside device.
It addition, vacuum pump 1 is configured to link electro-motor 10 and pump main body 20, defeated with electro-motor 10
Rotor 27 and blade 28 that shaft 12 links slide in the cylinder buss 23 of pump main body 20.Therefore, will
Pump main body 20 is directed at the center of rotation X1 of the output shaft 12 of electro-motor 10 and carries out assembling is critically important
's.
Therefore, in the present embodiment, electro-motor 10 is formed in the end side of casing 11 with output shaft
Embedded hole portion 63 centered by the center of rotation X1 of 12.On the other hand, as in figure 2 it is shown, at chassis body
The back side of 22, is integrally formed with the fitting portion 22F of rearwardly projecting cylindrical shape around cylinder chamber S.
This fitting portion 22F is formed in the way of concentric with the center of rotation X1 of the output shaft 12 of electro-motor 10, and
And the embedded hole portion 63 with electro-motor 10 that is formed carries out concavo-convex chimeric external diameter.Thus, at this knot
In structure, only by the embedded hole portion 63 that the fitting portion 22F of chassis body 22 is embedded electro-motor 10,
Just center can be made simply to be directed at, it is possible to easily to carry out electro-motor 10 and the group of pump main body 20
Pretend industry.It addition, on the back side of chassis body 22, it is formed around seal groove 22E at fitting portion 22F,
Ring-type seal member 35 it is configured with in this seal groove 22E.
It follows that the manufacture method of the casing 31 included by above-mentioned vacuum pump 1 is illustrated.Fig. 4 is
The flow chart of the manufacturing step of casing 31 is shown.
First, on the outer peripheral face for the cylinder buss 23 of casing 31 forming spiral groove (prevent rotate and
The unit of abjection) (step S1).Specifically, as it is shown in figure 5, at the outer peripheral face 23D of cylinder buss 23
Shape multiple groove portion 23E spirally extended.This groove portion 23E is for fashionable molten by group at cylinder buss 23
Melt in metal invades this groove portion 23E as holder function, thus prevent the rotation of cylinder buss 23
And abjection.Groove portion 23E is preferably formed into and is closed by end 23F but it also may change between this groove portion 23E
Spacing.This groove portion 23E spirally extended can be by the card that cylinder buss 23 is maintained at lathe
Make cutter (lathe tool) abut with the outer peripheral face 23D of this cylinder buss 23 under state on dish to shape simply.
It addition, by the amount of feeding adjusting cylinder buss 23, it is possible to simply change the spacing of groove portion 23E.It addition,
In this embodiment, from the viewpoint of shaping simply, to become on the outer peripheral face 23D of cylinder buss 23
The situation of the groove portion 23E that shape spirally extends is an example is illustrated, but is not limited to this, such as,
Can also carry out the outer peripheral face 23D of cylinder buss 23 applying the concavo-convex processing such as recess.
It follows that cast chassis body 22(step S2 when group enters cylinder buss 23).Concrete and
Speech, is fixed on cylinder buss 23 in die-casting mold (not shown), pours into a mould in this condition in mould
The motlten metals such as aluminum.Thus, the chassis body 22 after cylinder buss 23 one group is entered by casting.
It follows that cylinder buss 23 and chassis body 22 are carried out machining (step S3) integratedly.Tool
For body, using the intercommunicating pore 22A of the chassis body 22 as air inlet, the opening 23B mono-of cylinder buss 23
Carry out hole machined body, and by the steam vent 22C of chassis body 22, the steam vent 23C of cylinder buss 23
Carry out hole machined integratedly.In the present embodiment, due to these intercommunicating pores 22A, opening 23B and steam vent
22C, 23C are configured on identical axle center across cylinder chamber S, therefore by above chassis body 22
The Drilling operation that side is carried out can form this some holes and opening.Additionally, carried out these hole machined it
After, the burr produced around intercommunicating pore 22A, opening 23B and steam vent 22C, 23C is carried out clearly
Reason.
The sliding surface slided as rotor 27 and blade 28 due to the inner peripheral surface 23A of cylinder buss 23 plays merit
Can, it is therefore desirable to shape the internal diameter of cylinder buss 23 accurately.In the present embodiment, due to by cylinder
Lining 23 groups enters in chassis body 22, therefore this cylinder buss 23 melted with high temperature in the operation of casting
Metal contacts and thermal expansion occurs, and thermal contraction occurs during cooling.Thus, cylinder buss 23
Internal diameter likely produces deviation according to each individuality.Therefore, the cylinder buss 23 entered by group by cutting
Inner peripheral surface 23A make the internal diameter of this cylinder buss 23 meet given size exactly.
It follows that use than cylinder buss 23(ferrum) the harder metal inner peripheral surface 23A to cylinder buss 23
The surface carrying out overlay film processes (step S4).Specifically, the inner peripheral surface 23A of cylinder buss 23 is implemented
Hard chromium plating.In this case, by the chassis body in addition to the inner peripheral surface 23A of cylinder buss 23
After 22 cover, this chassis body entirety immerses in chrome-plating bath, thus this inner peripheral surface 23A implements hard plating
Chromium.After the drying inner peripheral surface 23A is polished grinding etc., so that the internal diameter of cylinder buss 23 accords with exactly
Close given size.
Finally, cylinder buss 23 is covered (step S5), and plating is implemented on the surface of chassis body 22
Trivalent zinc processes (step S6) and terminates.
As it has been described above, according to present embodiment, including the rotor 27 and the blade 28 that are driven by electro-motor 10
Carry out in the manufacture method of the casing 31 of cylinder chamber S slided, including following operation: cylinder chamber S will be formed
Cylinder buss 23 be arranged on mould, the aluminum motlten metal making chassis body 22 shape casts,
Group enters cylinder buss 23 integratedly；And processing run through integratedly cylinder buss 23 and chassis body 22 and with
Intercommunicating pore 22A, opening 23B and steam vent 22C, 23C of connection in cylinder chamber S, therefore, it is possible to processing
Run through integratedly by the cylinder buss 23 chassis body 22 after group enters integratedly and with connect in cylinder chamber S
Intercommunicating pore 22A, opening 23B and steam vent 22C, 23C.Therefore, there is no need to carry out at press-in cylinder liner
The adjustment operation of hole site between the cylinder buss 23 and the chassis body 22 that produce in the operation of set, casing
The additional processing of main body 22, compared with the method for press-in cylinder buss, it is possible to realize the number of working processes when manufacturing
Minimizing.Further, since manufacture casing 31 when cylinder buss 23 is entered chassis body 22 by group,
Therefore, it is possible to the miniaturization realized in the axial direction of this casing 31.
It addition, according to present embodiment, due to the cylinder buss 23 being machined with opening 23B and steam vent 23C
Inner peripheral surface 23A implement hard chromium plating process, therefore entered machine even for by cylinder buss 23 group integratedly
Casing 31 in shell main body 22, it is also possible to simply form the sliding surface that hardness is the highest.
It addition, according to present embodiment, before being included in the operation that group enters cylinder buss 23, at cylinder buss
The operation of the unit preventing the rotation of this cylinder buss 23 and abjection is shaped on the outer peripheral face 23D of 23, therefore,
Even if cylinder buss 23 uses the metal that thermal coefficient of expansion is different with chassis body 22, with press-in cylinder buss
Method compare, it is also possible to simplify prevent the rotation of cylinder buss 23 and the structure of abjection.
It addition, according to present embodiment, as preventing from rotating and the unit of abjection, outside cylinder buss 23
The groove portion 23E of forming spiral shape on side face 23D, prevents from rotating and the cylinder of abjection therefore, it is possible to make simply
Lining 23.
It addition, according to present embodiment, include the casing 31 that is installed on electro-motor 10 and
Include in this casing 31 that the rotor 27 driven by electro-motor 10 and blade 28 carry out the cylinder chamber S slided
Vacuum pump 1 in, casing 31 includes being entered in cast chassis body 22 by group integratedly and forming cylinder
The cylinder buss 23 of room S, and include running through cylinder buss 23 and chassis body 22 and cylinder chamber integratedly
Intercommunicating pore 22A, opening 23B and steam vent 22C, 23C of connection in S, therefore, it is possible to realize casing 31
To rotating axial miniaturization, and compared with the method for press-in cylinder buss, it is possible to realize when manufacturing
The minimizing of the number of working processes.
Above, the optimal embodiment being used for implementing the present invention is described, but on the invention is not restricted to
The embodiment stated, and various deformation and change can be carried out by technological thought based on the present invention.
Symbol description
1: vacuum pump
10: electro-motor (driving machine)
12: output shaft (rotary shaft)
22: chassis body
22A: intercommunicating pore (air inlet)
22B: hole portion
22C: steam vent
23: cylinder buss
23A: inner peripheral surface
23B: opening (air inlet)
23C: steam vent
23D: outer peripheral face
23E: groove portion (helicla flute)
23F: end
24: pump cover
27: rotor (rotary compression component)
28: blade (rotary compression component)
31: casing
S: cylinder chamber
Claims (5)
1. a manufacture method for casing, described casing includes that the rotary compression component driven by driving machine is carried out
The cylinder chamber slided, the manufacture method of described casing is characterised by, including following operation:
The cylinder buss forming described cylinder chamber is arranged on mould, makes what chassis body shaped to melt
Metal casts, and group enters described cylinder buss integratedly；And
Process run through described cylinder buss and institute from the side of described chassis body by a Drilling operation
State chassis body and with the air inlet connected in described cylinder chamber and steam vent,
Wherein,
Described cylinder buss is entered described in the way of the axle center of this cylinder buss is eccentric relative to center of rotation by group
In chassis body,
Described air inlet and described steam vent are to be configured on identical described axle center across described cylinder chamber
Mode is processed.
2. the manufacture method of casing as claimed in claim 1, it is characterised in that include following operation: make
With the metal harder than described cylinder buss, to the described cylinder being machined with described air inlet and described steam vent
The inner peripheral surface of lining carries out overlay film.
3. the manufacture method of casing as claimed in claim 1 or 2, it is characterised in that include following work
Sequence: before group enters the operation of described cylinder buss, shapes on the outer peripheral face of described cylinder buss and is used for preventing
Stop rotation and the unit of abjection of this cylinder buss.
4. the manufacture method of casing as claimed in claim 3, it is characterised in that as preventing described rotation
With the unit of abjection, forming spiral groove on the outer peripheral face of described cylinder buss.
5. a vacuum pump, it is characterised in that described vacuum pump includes being installed on driving machine, utilization
The casing that any one manufacture method described in described Claims 1 to 4 produces, and include in this casing
The rotary compression component driven by described driving machine carries out the cylinder chamber slided.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011028481A JP2012167590A (en) | 2011-02-14 | 2011-02-14 | Process for manufacturing casing, and vacuum pump |
| JP2011-028481 | 2011-02-14 | ||
| PCT/JP2012/053138 WO2012111561A1 (en) | 2011-02-14 | 2012-02-10 | Process for manufacturing casing, and vacuum pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103477081A CN103477081A (en) | 2013-12-25 |
| CN103477081B true CN103477081B (en) | 2016-11-30 |
Family
ID=
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6318195A (en) * | 1986-07-10 | 1988-01-26 | Toyota Autom Loom Works Ltd | Manufacture for cylinder block in slide vane type rotary compressor |
| JP2001170755A (en) * | 1999-12-15 | 2001-06-26 | Tp Kogyo Kk | Cast iron member for inserting, inserted product using same and method of manufacturing cast iron member for inserting |
| WO2004111460A1 (en) * | 2003-06-11 | 2004-12-23 | Matsushita Electric Industrial Co., Ltd. | Vane rotary pneumatic pump |
| JP2008196346A (en) * | 2007-02-09 | 2008-08-28 | Mazda Motor Corp | Sliding member and its manufacturing method |
| JP2009091973A (en) * | 2007-10-09 | 2009-04-30 | Denso Corp | Vacuum pump |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6318195A (en) * | 1986-07-10 | 1988-01-26 | Toyota Autom Loom Works Ltd | Manufacture for cylinder block in slide vane type rotary compressor |
| US4776074A (en) * | 1986-07-10 | 1988-10-11 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Rotary slide vane compressor |
| JP2001170755A (en) * | 1999-12-15 | 2001-06-26 | Tp Kogyo Kk | Cast iron member for inserting, inserted product using same and method of manufacturing cast iron member for inserting |
| WO2004111460A1 (en) * | 2003-06-11 | 2004-12-23 | Matsushita Electric Industrial Co., Ltd. | Vane rotary pneumatic pump |
| JP2008196346A (en) * | 2007-02-09 | 2008-08-28 | Mazda Motor Corp | Sliding member and its manufacturing method |
| JP2009091973A (en) * | 2007-10-09 | 2009-04-30 | Denso Corp | Vacuum pump |
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