CN107208631B - The manufacturing method of hydraulic device and the hydraulic device manufactured by the manufacturing method - Google Patents
The manufacturing method of hydraulic device and the hydraulic device manufactured by the manufacturing method Download PDFInfo
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- CN107208631B CN107208631B CN201580074874.4A CN201580074874A CN107208631B CN 107208631 B CN107208631 B CN 107208631B CN 201580074874 A CN201580074874 A CN 201580074874A CN 107208631 B CN107208631 B CN 107208631B
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- helical gear
- gear
- tooth tip
- pressure chamber
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- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 43
- 230000003746 surface roughness Effects 0.000 claims abstract description 36
- 238000012545 processing Methods 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 7
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 6
- 239000010962 carbon steel Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 17
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000003860 storage Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 description 16
- 230000007423 decrease Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000007789 sealing Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000013316 zoning Methods 0.000 description 6
- 230000004087 circulation Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Oil pressure pump 1 has: a pair of of helical gear 20,25, is respectively provided with rotary shaft, and teeth portion is intermeshed；Main body 3 made of aluminum alloy has with the hydraulic pressure chamber 4 of the state storage gear 20,25 of engagement；Parts of bearings 30,35 supports the rotary shaft 21,22,26,27 of a pair of of helical gear 20,25 and rotates freely the rotary shaft 21,22,26,27 of the pair of helical gear 20,25；And lid 7,8, main body 3 is sealed in a fluid tight manner.The teeth portion of gear 20,25 is made of carbon steel, is had and is included the tooth form of arc sections in tooth tip and bottom of the tooth respectively, and is formed in engaging section from the one end in facewidth direction to the continuous contact line in the other end.Oil pressure pump 1 is after assembling main body 3, gear 20,25, parts of bearings 30,35 and lid 7,8, pass through run-in, processing is removed using the inner peripheral surface 3a of the hydraulic pressure chamber 4 of 20,25 pairs of main bodys 3 of gear, in the run-in, the gear 20,25 that surfaction has been carried out in the way of in the range of becoming 5~20 μm with the surface roughness Rz of tooth tip is removed processing.
Description
Technical field
The present invention relates to a kind of hydraulic device for having intermeshing a pair of of the gear of the flank of tooth, more particularly a kind of uses
Manufacturing method and the hydraulic dress that by the manufacturing method is manufactured of the following helical gear as the hydraulic device of the pair of gear
It sets, the pair of helical gear, which has, to be included respectively the tooth form of arc sections in tooth tip and bottom of the tooth and be formed in engaging section from facewidth side
To one end to the continuous contact line in the other end.
Background technique
It is well known that exist in the hydraulic device suitably rotates a pair of of gear and passes through this using drive motor
The spinning movement of gear sprays the hydraulic pump of the actuation liquid to actuation liquid pressing, or imports the actuation for first passing through pressurization in advance
Liquid rotates the gear and the rotary force of its rotary shaft is used to the fluid pressure motor etc. being used as power.
Moreover, as previous general hydraulic device, it is known to which the hydraulic device comprising following part etc. includes: a)
A pair of of helical gear is respectively provided with the rotary shaft being arranged in a manner of extending outward respectively from both ends of the surface, and teeth portion is intermeshed；
B) main body has both ends opening and is accommodated with the pair of helical gear hydraulic pressure chamber in inside with the state engaged；C) a pair of
Parts of bearings is separately equipped in the pair of helical gear two sides in the hydraulic pressure chamber of main body, supports the pair of helical gear
Rotary shaft and rotate freely the pair of helical gear rotary shaft；D) a pair of of lid, fixation is set in a fluid tight manner respectively
It sets the both ends of the surface in main body and seals the hydraulic pressure chamber.
In addition, in the hydraulic device of such composition, in the axis of the rotary shaft and support of the gear rotary shaft
Between bearing portion part exist appropriateness gap, similarly, the parts of bearings and store the parts of bearings the hydraulic pressure chamber it
Between there is also appropriateness gap.Therefore, under the normal use state of hydraulic device, when the actuation liquid effects of high pressure are in institute
When stating gear, gear is to the mobile gap value of low-pressure side, and the hydraulic pressure chamber inner peripheral surface of low-pressure side is by the gear cutting as a result,.This
Outside, when the actuation liquid effects of high pressure are when gear, the gear comprising the rotary shaft, the main body, the parts of bearings and
The lid globality flexible deformation, gear be pressed against the hydraulic pressure chamber inner peripheral surface of low-pressure side, pass through such flexible deformation
The hydraulic pressure chamber inner peripheral surface of machinable low-pressure side.
In the case, as long as the appropriate surface roughness of hydraulic pressure chamber inner peripheral surface after being cut, i.e. in permissible range
Surface roughness just there is no problem, but become more than permissible range surface roughness in the case where, in addition to generate make an uproar
Other than sound, mechanical efficiency and volumetric efficiency can be also led to the problem of because of leakage to be reduced.
Therefore, in the past usual to carry out run-in after assembling in the field of the hydraulic device, pass through the run-in
Prevent problem as described above.The method of run-in considers that various methods, the method basic as its have as shown in Figure 7
Method, in the method, using the pressure for the on high-tension side actuation liquid for making hydraulic device on one side like that as shown in Fig. 7 in height
Press PHWith low pressure PLBetween increase and decrease in saw blade shape, on one side monitoring act on gear shaft torque aspect.
If be illustrated in more details using Fig. 7 to the run-in method, then making the high pressure of hydraulic device first
P of the pressure of the actuation liquid of side in high pressureH1With the P of low pressureLBetween increase and decrease in saw blade shape.When pressure initially reachs PH1When,
The power that gear is pressed against the inner peripheral surface of hydraulic pressure chamber is become maximum, shaft torque also corresponds to this and rises, at this point, utilizing gear
Tooth tip is removed processing to the inner peripheral surface of hydraulic pressure chamber.Therefore, next reach P in the pressure of actuation liquidH1When, by gear pressure
The power for being butted on the inner peripheral surface of hydraulic pressure chamber corresponds to initial removal processing and reduces, and the shaft torque for acting on the gear also drops
It is low, so processing is removed using inner peripheral surface of the decreased power to hydraulic pressure chamber.By this method, by making actuation liquid
Pressure increase and decrease in saw blade shape, and processing is removed to the inner peripheral surface of hydraulic pressure chamber at leisure.
Moreover, if the shaft torque for acting on gear is lower than a reference value, next by the pressure P of high pressureHIt is set as
Than pressure PH1The pressure P of high specified pressureH2, similarly monitored while increasing and decreasing it in saw blade shape and act on gear
Shaft torque.When by pressure from PH1It is increased to PH2When, correspondingly, the power that gear is pressed against the inner peripheral surface of hydraulic pressure chamber is risen,
Shaft torque also rises, and the amount that the power rises is promoted in the removal processing of the inner peripheral surface of hydraulic pressure chamber, hereafter, by making pressure in saw blade shape
Ground increase and decrease, by with it is described it is same in a manner of the removal of the slowly inner peripheral surface of propulsion liquid pressure chamber process, shaft torque slowly reduces
For the state lower than a reference value.
Hereafter it is similarly repeated the pressure P of high pressureHIt is set as the pressure of high specified pressure and makes it in saw on one side
Increase and decrease to knife-like the step of monitoring acts on the shaft torque of gear on one side (circulation), becomes shape of the shaft torque no more than a reference value
When state, it is considered as and removal processing is completed and terminates run-in.
In this way by such run-in of progress, the hydraulic pressure chamber inner peripheral surface of main body can be made to become smooth surface, and
So that the gap between the tooth tip outer surface of gear and hydraulic pressure chamber inner peripheral surface is become minimum, and make the tooth tip outer surface of gear with it is hydraulic
Indoor circumferential surface contiguity, contiguity can prevent liquid from the partial compromise (leak) in this way, as a result, it is possible to prevent
The problem of the problem of stating noise or mechanical efficiency and volumetric efficiency reduce.
In addition, such run-in was the feature in conjunction with hydraulic device in the past and completed various designs, as its an example, mention
Out just like revealed hydraulic device of following patent documents 1 and 2 etc..
Background technology document
Patent document
Patent document 1: Japanese Patent Laid-Open 2003-161270 bulletin
Patent document 2: Japanese Patent Laid-Open 2010-19099 bulletin
Summary of the invention
Problems to be solved by the invention
In addition, previous the pair of gear uses gear of various shapes, one of them has the helical gear of following shape,
That is, have respectively in the tooth form that tooth tip and bottom of the tooth include arc sections, and engaging section be formed with from the one end in facewidth direction to
The continuous contact line in the other end.Moreover, in using the helical gear hydraulic device with such tooth form, it certainly also must be into
The row run-in.In addition, being made of using the main body of the helical gear hydraulic device of such shape aluminium alloy, constitute
The part of the pair of helical gear at least teeth portion is made of carbon steel.
However, the helical gear flank of tooth integrally has smooth curved surface, and the problem of in order to avoid leaking or noise
Problem, being finish-machined to its surface roughness Rz by grinding is 3 μm of even surfaces below, accordingly, there exist following problem,
That is, the removal processability using the tooth tip is poor, when carrying out the run-in, it is difficult to by the inner peripheral surface of the hydraulic pressure chamber
Surface roughness controls within the specified scope, thus what the problem of being unable to improve noise or mechanical efficiency and volumetric efficiency reduced
Problem.
That is, in other words, the contact resistance of tooth tip and hydraulic pressure chamber inner peripheral surface is larger if the removal processability of tooth tip is poor,
Tearing phenomenon so is generated in hydraulic pressure chamber inner peripheral surface, therefore, it is considered that surface roughness deteriorates.Additionally it is believed that working as tooth tip and hydraulic pressure chamber
De- liquid is generated when the contact resistance of inner peripheral surface is larger in the contact portion, it is believed that the situation also secondarily makes surface roughness
Deteriorate.
In order to improve such problem slightly, consider by slowly improving the high pressure P in run-inHSetting pressure and drop
Low contact resistance, but nonetheless, it does not simply fail to solve surface roughness at all, instead since figure must more be repeated
The circulation for increasing and decreasing pressure in saw blade shape, thus lead to the problem of and need the another of long-time run-in.
The present invention is completed in view of the above actual conditions, and its purpose is to provide the hydraulic pressure chamber inner circumferentials after a kind of run-in
The surface roughness in face it is good and can with carried out than the previous short time hydraulic device of run-in manufacturing method and
Hydraulic device.
The means solved the problems, such as
It is related to a kind of manufacturing method of hydraulic device and by the manufacturing method for solving the present invention of described problem
The manufacturing method of the hydraulic device of manufacture, the hydraulic device manufactures hydraulic device, which has: a pair of of helical gear, point
The rotary shaft that Ju You not be arranged in a manner of extending outward respectively from both ends of the surface, and teeth portion is intermeshed, and the teeth portion has
Have respectively in the tooth form that tooth tip and bottom of the tooth include arc sections, is formed in engaging section from the one end in facewidth direction to the other end
Continuous contact line；
Main body has both ends opening and is accommodated with the pair of helical gear hydraulic pressure chamber in inside with the state engaged,
The hydraulic pressure chamber has the inner peripheral surface of the arc-shaped of the pair of helical gear tooth tip outer surface sliding contact；
A pair of bearings component is separately equipped in the pair of helical gear two sides, support in the hydraulic pressure chamber of the main body
The pair of helical gear rotary shaft and rotate freely the pair of helical gear rotary shaft；And
A pair of of lid is fixed at the both ends of the surface of the main body and the hydraulic pressure chamber is close in a fluid tight manner respectively
Envelope；And
The pair of helical gear at least described teeth portion is made of carbon steel, and the main body is made of aluminium alloy,
The manufacturing method is passed through after by the main body, a pair of of helical gear, a pair of bearings component and a pair of of lid assembling
Run-in is removed processing using hydraulic pressure chamber inner peripheral surface of the pair of helical gear to the main body,
In the run-in, utilization is become the manufacturing method of the hydraulic device with the surface roughness Rz of the tooth tip
Mode in the range of 5~20 μm has carried out the pair of helical gear of surfaction, carries out the removal processing.
In addition, the surface roughness Rz is institute in JIS B 0601,2013 (ISO 4287, Amendment1 (2009))
Defined " maximum height roughness ".
The inventors of the present invention have found following situation in view of described problem, that is, by transporting to helical gear tooth tip, i.e. in adjustment
The surface roughness Rz of the service portion of performance removal processing is modified when turning in the mode in the range of becoming 5~20 μm, is obtained
Obtain appropriate removal processability.On the other hand, as described above, the case where using the helical gear hydraulic device of the shape
Under, in the past in order to avoid leakage problem or noise problem, the helical gear flank of tooth is integrally finish-machined to by surface by grinding
Roughness Rz is 3 μm of even surfaces below.However, according to the opinion that the effort of people through the invention etc. research obtains, Ke Yiming
True following situation, that is, the surface roughness Rz modification by that will reach the tooth tip of removal effect is 5 μm or more, is obtained good
Remove processability, as long as and the tooth tip surface roughness Rz be 20 μm hereinafter, leakage or noise problem would not be generated.
So, in accordance with the invention it is possible to which the removal processability of helical gear tooth tip when making run-in improves, thus
The surface roughness of hydraulic pressure chamber inner peripheral surface after the run-in is good, can be avoided and generates noise or machinery because of run-in
The problem of efficiency and volumetric efficiency reduce, furthermore it is possible to the time required to shortening run-in.
In addition, more preferably, the mode in the range of becoming 5~15 μm to the tooth tip with its surface roughness Rz carries out
Surfaction.
Furthermore it is preferred that be, to it is the pair of it is helical gear at least centered on its axis across-the 1.25 of its tooth tip crest line
The tooth tip region of the angular range of~1.25 degree of degree carries out surfaction.The tooth tip region is the portion for reaching removal elaboration
Point, it is therefore preferable that being at least to be modified to the tooth tip region.It is of course also possible to be modified to other regions, but due to depositing
In noise bigger tendency, thus preferably optionally region appropriate is modified.
In addition, so-called modification refers to improve removal processability and changes surface roughness from original state change
Matter method is not by any restriction, preferably, is modified and assigning numerous streak to surface.As such imparting item
An example of the method for trace can be enumerated and be nuzzled up the method on tooth tip surface using metallic brush.By assigning streak, it is possible to realize good
Ground improves removal processability.
In addition, the streak is preferably to primarily form direction to become the direction intersected with tooth tip crest line, alternatively, being formed
In non-direction random direction.So, which reaches the effect of liquid storage, and prevents the tooth tip and hydraulic pressure chamber of gear
De- liquid on the contact portion of inner peripheral surface, to obtain more good removal processability.
The effect of invention
As described above, according to the present invention, since the removal of helical gear tooth tip when run-in can be made to add
Work improves, thus the surface roughness of the hydraulic pressure chamber inner peripheral surface after the run-in is good, can be avoided because run-in produces
The problem of raw noise or mechanical efficiency and volumetric efficiency reduce, furthermore it is possible to the time required to than previous shortening run-in.
Detailed description of the invention
Fig. 1 is the sectional view for indicating the oil pressure pump and breaking system of one embodiment of the present invention.
Fig. 2 is the sectional view of the arrow A-A direction observation in Fig. 1.
Fig. 3 is the sectional view of the direction the arrow B-B observation in Fig. 2.
Fig. 4 is the explanatory diagram in the region for illustrating to modify the surface of tooth tip in present embodiment.
Fig. 5 is the explanatory diagram for illustrating effect of the invention.
Fig. 6 is the chart for illustrating effect of the invention.
Fig. 7 is the explanatory diagram for illustrating basic run-in method.
Specific embodiment
Hereinafter, descriptioning of specific embodiments of the present invention while referring to attached drawing.
Fig. 1 shows the oil pressure pump of one embodiment of the present invention and breaking systems, carry out figure to oil pressure pump with section
Show.In addition, Fig. 2 is the sectional view along arrow A-A direction observation of oil pressure pump shown in FIG. 1, Fig. 3 is equally oil shown in Fig. 2
The sectional view along the observation of the direction arrow B-B of press pump.
[the basic composition of oil pressure pump]
Firstly, being illustrated to the basic composition of the oil pressure pump 1 of this example.As shown in FIG. 1 to 3, which is included in
Inside is formed with the shell 2 of hydraulic pressure chamber 4, a pair of of the helical gear being separately equipped in the hydraulic pressure chamber 4 20,25, a pair of bearings portion
Part 30,35 and a pair of side plates 40,45 etc..
The shell 2 includes: main body 3 is made of aluminium alloy, and being formed from one end facing towards other end has section shape
Shape becomes the hydraulic pressure chamber 4 in the substantially space of 8-shaped；Front cover 7 is situated between and is fixed on the master in a fluid tight manner every sealing element 10
An end face (front end face) for body 3；And end cap 8, it is situated between and is fixed on the another of main body 3 in a fluid tight manner every sealing element 11
One end face (rear end face)；The hydraulic pressure chamber 4 is closed using the front cover 7 and end cap 8.In addition, the hydraulic pressure chamber 4 is for example logical
Boring processing is crossed to process, it is however generally that, surface roughness Rz is 6~12 μm.In addition, the material of front cover 7 and end cap 8 can
To be aluminium alloy identical with main body, it is also possible to other materials.
The gear 20 has the rotary shaft 21,22 being arranged in a manner of extending outward respectively from its both ends of the surface, equally
Ground, the gear 25 have the rotary shaft 26,27 being arranged in a manner of extending outward respectively from its both ends of the surface.These gears
20,25 be the intermeshing helical gear of teeth portion, which, which has, includes the tooth form of arc sections in tooth tip and bottom of the tooth respectively, and has
Have and be formed with the tooth form from the one end in facewidth direction to the continuous contact line in the other end in engaging section, in intermeshing shape
It is inserted under state in the hydraulic pressure chamber 4, hydraulic pressure chamber 4 is divided into high-pressure side and low-pressure side as boundary using the engaging section of the gear 20,25
Two parts.In addition, the teeth portion of the gear 20 of this example becomes dextrorotation, the teeth portion of gear 25 becomes left-handed.
In addition, the end of the rotary shaft 21 of gear 20 is formed as taper, and then threaded portion 21a is formed in its front end, it should
Portion reaches outside, the outer peripheral surface of the rotary shaft 21 and the inner circumferential of through hole 7a by being formed in the through hole 7a of the front cover 7
It is sealed between face by oil seal 9.In addition, the rotary shaft 21 suitably links with drive motor, passed from the drive motor
Graduating power, gear 20 is functioned as driving gear as a result, and gear 25 is functioned as driven gear.These gears 20,
25 are made of carbon steel, and teeth portion carries out grinding after carrying out quenching processing, and the surface roughness Rz of the flank of tooth, which is finished, is
0.8~3 μm.
The side plate 40 is by having two through holes 41,42 and component structure of the section shape as the substantially plate of 8-shaped
At, with inserted respectively in the through hole 41,42 state of rotary shaft 21,26 of the gear 20,25 be disposed in the gear 20,
25 front side.Similarly, the side plate 45 is by having two through holes 46,47 and plate of the section shape as substantially 8-shaped
Component constitute, be disposed in inserting the state of rotary shaft 22,27 of the gear 20,25 respectively in the through hole 46,47
The rear side of the gear 20,25.So, side plate 40,45 respectively becomes the entire end comprising teeth portion for being connected to gear 20,25
The state in face.The side plate 40,45 is made of brass, and surface roughness Rz finishing is by two surfaces by grinding
0.8~3 μm.
The parts of bearings 30 is by having two supported holes 31,32 and component structure of the section shape as substantially 8-shaped
At metal bearing, with inserted respectively in supported hole 31,32 state of rotary shaft 21,26 of gear 20,25 be disposed in it is described
The front side of side plate 40 supports the rotary shaft 21,26 and rotates freely the rotary shaft 21,26.Similarly, the parts of bearings 35
It is the metal bearing by having two supported holes 36,37 and section shape is constituted as the component of substantially 8-shaped, in supported hole
36, the state of 37 rotary shafts 22,27 for inserting gear 20,25 respectively is disposed in the rear side of the side plate 45, supports the rotation
Axis 22,27 and rotate freely the rotary shaft 22,27.The whole material of parts of bearings 30,35 is not particularly limited, but supported hole
31,32,36,37 it at least must be coated with bearing material in inner peripheral surface, or is pressed into the bearing material of tubulose.
In addition, it is similar Arabic numerals that the shape from side, which is arranged, between parts of bearings 30 and side plate 40
The flexible zoning sealing element 50 of the shape of " 3 ", similarly, be equally arranged between parts of bearings 35 and side plate 45 from
The shape of side observation is the flexible zoning sealing element 51 of the shape of similar Arabic numerals " 3 ".The zoning sealing element
Interstitial area between parts of bearings 30 and side plate 40 is divided into high-pressure side and low-pressure side by 50, and zoning sealing element 51 is by parts of bearings 35
Interstitial area between side plate 45 is divided into high-pressure side and low-pressure side, suitably via flow path by the on high-tension side work of the hydraulic pressure chamber 4
Dynamic oil is directed on high-tension side each gap, and side plate 50,51 is not pressed against the end face of gear 20,25 by the actuation oil of the high pressure,
Thus prevent on high-tension side actuation oil from leaking to low-pressure side.
As shown in Figures 2 and 3, in the main body 3, the low-pressure side for being connected to the hydraulic pressure chamber 4 is formed in one side
Be taken into hole (being taken into flow path) 5, and the high pressure for being connected to the hydraulic pressure chamber 4 is similarly formed in another side on the other hand
The squit hole (spraying flow path) 6 of side.Moreover, these, which are taken into hole 5 and squit hole 6, passes through the pair of helical gear with respective axis
20, the mode at the center between 25 axle center is arranged.
So, according to having the above oil pressure pump 1 constituted substantially, the storage of actuation oil will be suitably stored by piping
The actuation oil of slot is connect with the hole 5 that is taken into of oil pressure pump 1, and is suitably suitably connect squit hole 6 with load portion by piping,
Hereafter, when rotating direction shown in arrow of the gear 20 into Fig. 1 and 2, the driven rotation of gear 25 engaged, by described
The actuation oil in the space that the teeth portion of inner peripheral surface 3a in hydraulic pressure chamber 4 and a pair of of helical gear 20,25 clips pass through a pair of of helical gear 20,
25 rotation is transferred to 6 side of squit hole, so that 6 side of squit hole becomes high-pressure side using the engaging section of gear 20,25 as boundary, is taken
Enter 5 side of hole as low-pressure side.Moreover, actuation oil is supplied by the piping from the storage tank to the hole 5 that is taken into for becoming low pressure, and
The actuation oil of high pressure is ejected into the load portion from the squit hole 6 for becoming high pressure.
[aspect of run-in]
Secondly, to by each constituent part of the oil pressure pump 1, i.e. main body 3, front cover 7, end cap 8, gear 20,25, bearing
After component 30,35 and side plate 40,45 are processed into the specification, by these assembling parts and its final adjustment of run-in is carried out
It is illustrated.
Firstly, carrying out following operation, that is, to the tooth tip surface of the gear 20,25 for having been processed into the specification with its table
Surface roughness Rz is modified as 5~20 μm of mode.Specifically, the main shaft that gear 20,25 is mounted on lathe etc. is made
It is rotated around axis center, and metallic brush etc. is compressed and the tooth tip for the rotation of nuzzling up, and is assigned as a result, to the tooth tip surface numerous
Streak and its surface is modified.So, the streak in the direction intersected with tooth tip crest line is assigned.
In addition, as shown in figure 4, the region of surfaction is preferably set as centered on axis 20a, 25a of gear 20,25
It is situated between every the region of the angular range of at least -1.25~1.25 degree of the degree of its tooth tip crest line 20b, 25b.The tooth tip region is to reach
Except the part of elaboration, it is therefore preferable that being at least to be modified to the tooth tip region.It is of course also possible to other regions into
Row modification, but since there are noise bigger tendencies, thus preferably optionally region appropriate is modified.
Next, by the tooth after main body 3, front cover 7, end cap 8, parts of bearings 30,35, side plate 40,45 and surfaction
Wheel 20,25 is assembled like that as shown in Figures 1 to 3, carries out run-in using breaking system 60 after assembling.
Breaking system 60 includes: torque master 63；Drive motor 61 is attached at via the torque master 63
The rotary shaft 21；Pressure gauge 62 is connected to the squit hole 6 of the main body 3 and detects the actuation oil sprayed from the squit hole 6
Pressure；And control device 64, it is detected based on the shaft torque detected by torque master 63 and by the pressure gauge 62
Pressure controls the movement of the drive motor 61.
Specific run-in is actuation oil and oil pressure pump 1 in the appropriate storage tank that will store actuation oil by piping
Be taken into hole 5 connection and will be used to make actuation oil back to the storage tank loopback pipe be connected to squit hole 6 after, utilize institute
Under the control for stating control device 64, drive motor 61 is driven and acts oil pressure pump 1 as shown in Figure 7, is thus carried out
Run-in.
That is, control device 64 monitors the pressure detected by the pressure gauge 62 on one side and is detected by torque master 63
Drive motor 61 is driven on one side and rotates gear 20,25, and increases its rotation speed slowly by shaft torque out.
Start the pump movement of following oil pressure pump 1 as a result, that is, actuation oil is supplied to from the storage tank and is taken into hole 5, it on the other hand, will be through
The actuation oil being overpressurized sprays from squit hole 6 and it is made to flow back into the storage tank；Along with the increasing of the rotation speed of gear 20,25
Add, the pressure of the actuation oil sprayed from squit hole 6 is from the P of initial valueLSlowly rise.
When rising when the pressure of the actuation oil sprayed from squit hole 6, i.e. by the pressure that pressure gauge 62 detects, gear 20,
25 are pushed and are pressed against the inner peripheral surface 3a of hydraulic pressure chamber 4 to being taken into 5 side of hole, the shaft torque detected by torque master 63 also with
This correspondingly rises, at this point, the tooth tip using gear 20,25 is removed processing to the inner peripheral surface 3a of hydraulic pressure chamber 4.
Moreover, control device 64, which is worked as, reaches initial setting pressure P by the pressure that pressure gauge 62 detectsH1When, make to drive
Motor 61 stops and makes the pressure reduction of the actuation oil of squit hole 6 to initial value PL.Hereafter, control device 64 monitor on one side by
Pressure that the pressure gauge 62 detects and the shaft torque detected by torque master 63 control drive motor 61 on one side,
Make the actuation oil pressure of 6 side of squit hole in the P of high pressureH1With the P of low pressureLBetween increase and decrease in saw blade shape.
So, by making the actuation oil pressure of 6 side of squit hole in the P of high pressureH1With the P of low pressureLBetween be in saw blade shape
Ground increase and decrease, is removed processing to the inner peripheral surface 3a of hydraulic pressure chamber 4 at leisure using the tooth tip of gear 20,25, in 6 side of squit hole
Actuation oil pressure reaches PH1When, the shaft torque detected by torque master 63 also slowly reduces, and gets lower than preset
A reference value.
So, the actuation oil pressure in 6 side of squit hole reaches PH1When, if the axis detected by torque master 63
Torque, the shaft torque for acting on gear 20,25 are lower than a reference value, then the pressure of high pressure is set as than pressure by control device 64
Power PH1The pressure P of high specified pressureH2, increase and decrease it in saw blade shape, monitor detected by torque master 63 on one side
Shaft torque out.When by pressure from PH1It is increased to PH2When, correspondingly, gear is pressed against to the power of the inner peripheral surface of hydraulic pressure chamber
Rise, shaft torque also rises, and the power ascending amount is promoted in the removal processing of the inner peripheral surface 3a of hydraulic pressure chamber 4, hereafter, by making squit hole
The actuation oil pressure of 6 sides increases and decreases in saw blade shape, by with it is described it is same in a manner of, the slowly inner peripheral surface 3a of propulsion liquid pressure chamber 4
Removal processing, the shaft torque for acting on gear 20,25 slowly reduce and become the state lower than a reference value.
Hereafter control device 64 is similarly repeated the pressure P of high pressureHIt is set as the pressure P of high specified pressureHnOne
While it is made to increase and decrease the step of monitoring acts on the shaft torque of gear on one side (circulation) in saw blade shape, passing through the circulation shaft torque
When as the state for being no more than a reference value, it is considered as and removal processing is completed and terminates run-in.
So, in this example, the effect that performance removal is processed to the tooth tip of gear 20,25, i.e. in run-in
The surface roughness Rz in portion is modified in the mode in the range of becoming 5~20 μm, thus obtains good removal processability,
Compared with the surface roughness Rz of tooth tip is previous within 3 μm, the inner peripheral surface 3a of the hydraulic pressure chamber 4 can be made to become smooth
Surface, and the gap between the tooth tip outer surface of gear 20,25 and the inner peripheral surface 3a of hydraulic pressure chamber 4 is made to become minimum, make gear
20, the inner peripheral surface 3a of 25 tooth tip outer surface and hydraulic pressure chamber 4 touches, and in this way by contiguity, can prevent liquid from letting out from the part
It leaks (leak), the problem of as a result, it is possible to prevent the noise or the problem of mechanical efficiency and volumetric efficiency reduce, thus
It can be to complete run-in than the previous short time.
In addition, in the past due in order to prevent because removal processing cause hydraulic pressure chamber 4 inner peripheral surface 3a it is coarse due to by the pressure of high pressure
Power PHSlowly improve, thus must be by run-in when iterative cycles be set as multiple circulations, needed the time required to run-in
150 minutes or so are wanted, but such as this example in this way, by the tooth tip to gear 20,25 with its surface roughness Rz as 5~20 μm
Mode is modified, and can be realized good removal processability, thus with completion run-in in 90 minutes or so.So,
In accordance with the invention it is possible to which break-in period is cut down 4 at left and right, so as to seek its efficient activity.
Moreover, efficient run-in can not only be carried out in this way according to this example, additionally it is possible to which obtaining has i.e.
Just the oil pressure pump 1 of same quietness compared with the past also in no way inferior.In Fig. 5 and Fig. 6, in compared with comparative example, table
Show the quietness of the oil pressure pump of embodiment.Fig. 5 indicates the oil for making embodiment 1 and 2 and comparative example 1 and 2 using noisemeter measurement
Noise when press pump operates respectively in such a way that the actuation oil pressure of its 6 side of squit hole becomes 1MPa, 10MPa, 14MPa is resulting
As a result, Fig. 6 is by the resulting figure of result pictorialization.
The oil pressure pump of embodiment 1 is changed in such a way that its surface roughness Rz becomes 5 μm to the tooth tip of gear 20,25
Matter, the oil pressure pump of embodiment 2 are modified in such a way that its surface roughness Rz becomes 20 μm to the tooth tip of gear 20,25,
The run-in was completed with 90 minutes or so.On the other hand, the oil pressure pump of comparative example 1 is to the tooth tip of gear 20,25 with it
Surface roughness Rz is modified as 25 μm of mode, hereafter, completes the run-in, comparative example 2 with 90 minutes or so
Oil pressure pump be previous oil pressure pump, the surfaction of the tooth tip without gear 20,25, in addition, with item as in the past
Part carries out run-in, and run-in needs about 150 minutes or so.
By Fig. 5 and Fig. 6 it is found that the tooth tip to gear 20,25 is become in the range of 5~20 μm with its surface roughness Rz
The oil pressure pump for the embodiment 1 and 2 that mode is modified all has and the same peace and quiet below of previous oil pressure pump (comparative example 2)
Property.On the other hand, the comparative example 1 tooth tip of gear 20,25 modified in such a way that its surface roughness Rz becomes 25 μm
Oil pressure pump, noise becomes especially big compared with the oil pressure pump of previous oil pressure pump (comparative example 2) and embodiment 1 and 2.
As described above, the surface of the inner peripheral surface 3a of the hydraulic pressure chamber 4 of the oil pressure pump 1 manufactured by the manufacturing method of this example is thick
Rugosity is good, the time required to capable of shortening run-in, and after run-in, will not generate noise or mechanical efficiency and
The problem of volumetric efficiency reduces.
More than, one embodiment of the present invention is illustrated, but the specific aspect that the present invention can take is not
By its any restriction.
For example, more preferably, become with its surface roughness Rz 5~15 μm of range to the tooth tip of the gear 20,25
Interior mode carries out surfaction.
In addition, being situated between at least centered on its axis 20a, 25a every its tooth tip rib in upper example to the gear 20,25
The tooth tip region of the angular range of -1.25~1.25 degree of the degree of line 20b, 25b carries out surfaction, certainly, comprising to other areas
The aspect that domain is modified, but since there are noise bigger tendencies, thus preferably optionally region appropriate is changed
Matter.
In addition, the method for surfaction includes various methods, such as can also be by using the tool other than metallic brush
Processing or particle shot-peening etc. are modified.
In addition, the streak can also be formed in non-directive in the case where carrying out surfaction by assigning streak
Random direction on.
It also include that oil pressure is electronic in addition, instantiating oil pressure pump in upper example as hydraulic device, being certainly not limited to this
Machine etc. utilizes other hydraulic devices.In addition, instantiating and being arranged between gear 20,25 and parts of bearings 30,35 in upper example
Side plate 40,45 and the case where zoning sealing element 50,51, be also possible to without side plate 40,45 or zoning sealing element 50,51
Hydraulic device.
In addition, to gear 20 using the helical gear of dextrorotation, using left-handed helical gear to gear 25, certainly in upper example
It is not limited to this, left-handed helical gear can also be used to gear 20, the helical gear of dextrorotation is used to gear 25.
Industrial utilizability
The present invention can be applied preferably in the field of hydraulic device.
Description of symbols
1 oil pressure pump
2 shells
3 main bodys
3a inner peripheral surface
4 hydraulic pressure chambers
5 are taken into hole
6 squit holes
7 front covers
8 end caps
20,25 (spiral) gear
21,22,26,27 rotary shaft
30,35 parts of bearings
40,45 side plate
60 breaking systems
61 drive motors
62 pressure gauges
63 torque masters
64 control devices
Claims (10)
1. a kind of manufacturing method of hydraulic device, the hydraulic device have: a pair of of helical gear is respectively provided with from both ends of the surface
The rotary shaft that the mode extended outward respectively is arranged, and teeth portion is intermeshed, and the teeth portion has respectively in tooth tip and tooth
Bottom includes the tooth form of arc sections, is formed in engaging section from the one end in facewidth direction to the continuous contact line in the other end；
Main body is open with both ends and is accommodated with the pair of helical gear hydraulic pressure chamber in inside with meshing state, described
Hydraulic pressure chamber has the arc-shaped inner peripheral surface with the pair of helical gear tooth tip outer surface sliding contact；
A pair of bearings component is separately equipped in the pair of helical gear two sides in the hydraulic pressure chamber of the main body, supports institute
It states a pair of helical gear rotary shaft and rotates freely the pair of helical gear rotary shaft；And
A pair of of lid is fixed at the both ends of the surface of the main body and the hydraulic pressure chamber is close in a fluid tight manner respectively
Envelope；And
The pair of helical gear at least described teeth portion is made of carbon steel, and the main body is made of aluminium alloy,
After by the main body, a pair of of helical gear, a pair of bearings component and a pair of of lid assembling, by run-in, institute is utilized
It states a pair of of helical gear and processing is removed to the hydraulic pressure chamber inner peripheral surface of the main body；The feature of the manufacturing method of the hydraulic device
It is:
In the run-in, by with the surface roughness Rz of the tooth tip become 5~20 μm in the range of in the way of into
The pair of helical gear of surfaction of having gone carries out the removal and processes,
Wherein, the surface roughness Rz is maximum height roughness.
2. the manufacturing method of hydraulic device according to claim 1, it is characterised in that: to it is the pair of it is helical gear at least
Surface is carried out across the tooth tip region of the angular range of -1.25~1.25 degree of degree of its tooth tip crest line centered on its axis to change
Matter.
3. the manufacturing method of hydraulic device according to claim 1 or 2, it is characterised in that: the pair of helical gear table
Face modification is executed and assigning numerous streak to surface.
4. the manufacturing method of hydraulic device according to claim 3, it is characterised in that: the formation direction of the streak becomes
The direction intersected with tooth tip crest line.
5. the manufacturing method of hydraulic device according to claim 3, it is characterised in that: the streak is formed in non-directive
Random direction on.
6. a kind of hydraulic device, has: a pair of of helical gear is respectively provided in a manner of extending outward respectively from both ends of the surface
The rotary shaft of setting, and teeth portion is intermeshed, and the teeth portion has respectively in the tooth form that tooth tip and bottom of the tooth include arc sections,
It is formed in engaging section from the one end in facewidth direction to the continuous contact line in the other end；
Main body is open with both ends and is accommodated with the pair of helical gear hydraulic pressure chamber in inside with the state engaged, should
Hydraulic pressure chamber has the arc-shaped inner peripheral surface with the pair of helical gear tooth tip outer surface sliding contact；
A pair of bearings component is separately equipped in the pair of helical gear two sides in the hydraulic pressure chamber of the main body, described in support
A pair of helical gear rotary shaft and rotate freely the pair of helical gear rotary shaft；And
A pair of of lid is fixed at the both ends of the surface of the main body and the hydraulic pressure chamber is close in a fluid tight manner respectively
Envelope；
It is characterized by: the pair of helical gear at least described teeth portion is made of carbon steel, the main body is made of aluminium alloy, and
And
In the run-in after the assembling of the hydraulic device, utilizing becomes 5~20 μ with the surface roughness Rz of the tooth tip
Mode in the range of m has carried out the pair of helical gear of surfaction, goes to the hydraulic pressure chamber inner peripheral surface implementation of the main body
Except processing,
Wherein, the surface roughness Rz is maximum height roughness.
7. hydraulic device according to claim 6, it is characterised in that: helical gear be at least with its axis to the pair of
Center carries out surfaction across the tooth tip region of the angular range of -1.25~1.25 degree of degree of its tooth tip crest line.
8. hydraulic device according to claim 6 or 7, it is characterised in that: the pair of helical gear surfaction passes through
Numerous streak is assigned to surface and is executed.
9. hydraulic device according to claim 8, it is characterised in that: the formation direction of the streak becomes and tooth tip crest line
The direction of intersection.
10. hydraulic device according to claim 8, it is characterised in that: the streak is formed in non-direction random side
Upwards.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/053056 WO2016125263A1 (en) | 2015-02-04 | 2015-02-04 | Method for manufacturing hydraulic device, and hydraulic device manufactured using this manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107208631A CN107208631A (en) | 2017-09-26 |
| CN107208631B true CN107208631B (en) | 2019-03-12 |
Family
ID=54784382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580074874.4A Expired - Fee Related CN107208631B (en) | 2015-02-04 | 2015-02-04 | The manufacturing method of hydraulic device and the hydraulic device manufactured by the manufacturing method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5830200B1 (en) |
| CN (1) | CN107208631B (en) |
| WO (1) | WO2016125263A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101863040B1 (en) * | 2016-06-07 | 2018-06-04 | 한국생산기술연구원 | Aging Method for Gear Motor |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55101786A (en) * | 1979-01-26 | 1980-08-04 | Kayaba Ind Co Ltd | Construction of body bore in gear pump or motor |
| JPH11210644A (en) * | 1998-01-30 | 1999-08-03 | Shimadzu Corp | Gear pump motor |
| JP4075359B2 (en) * | 2001-11-22 | 2008-04-16 | 株式会社島津製作所 | Gear pump or motor |
| CN2688931Y (en) * | 2004-03-26 | 2005-03-30 | 程安强 | Pin axial high-pressure gearing pumps |
| JP2007177709A (en) * | 2005-12-28 | 2007-07-12 | Ntn Corp | Gear pump |
| CN201027644Y (en) * | 2007-03-06 | 2008-02-27 | 徐福刚 | Hydraulic gear pump |
| JP4872845B2 (en) * | 2007-07-27 | 2012-02-08 | 株式会社豊田自動織機 | Gear pump |
| ITMI20071608A1 (en) * | 2007-08-03 | 2009-02-04 | Luigi Carlo Arienti | "WORK PROCEDURE FOR THE REALIZATION OF THE PUMP PACK AND HYDRAULIC VOLUMETRIC MOTORS." |
| DE102010055682A1 (en) * | 2010-12-22 | 2012-06-28 | Robert Bosch Gmbh | Housing of an external gear machine and external gear machine |
| CN202833122U (en) * | 2012-07-31 | 2013-03-27 | 东莞市神煜机械有限公司 | Single-action gear pump |
| JP3189138U (en) * | 2013-11-27 | 2014-02-27 | 住友精密工業株式会社 | Hydraulic device |
-
2015
- 2015-02-04 CN CN201580074874.4A patent/CN107208631B/en not_active Expired - Fee Related
- 2015-02-04 JP JP2015528748A patent/JP5830200B1/en not_active Expired - Fee Related
- 2015-02-04 WO PCT/JP2015/053056 patent/WO2016125263A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016125263A1 (en) | 2016-08-11 |
| CN107208631A (en) | 2017-09-26 |
| JPWO2016125263A1 (en) | 2017-04-27 |
| JP5830200B1 (en) | 2015-12-09 |
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