CN104533780B - Hydraulic pump plunger and sliding shoe assembly and machining method thereof - Google Patents
Hydraulic pump plunger and sliding shoe assembly and machining method thereof Download PDFInfo
- Publication number
- CN104533780B CN104533780B CN201410850155.4A CN201410850155A CN104533780B CN 104533780 B CN104533780 B CN 104533780B CN 201410850155 A CN201410850155 A CN 201410850155A CN 104533780 B CN104533780 B CN 104533780B
- Authority
- CN
- China
- Prior art keywords
- plunger
- piston shoes
- transition
- sliding shoe
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title description 13
- 238000003754 machining Methods 0.000 title description 9
- 230000007704 transition Effects 0.000 claims abstract description 85
- 238000013016 damping Methods 0.000 claims abstract description 36
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 18
- 238000001514 detection method Methods 0.000 description 16
- 238000000227 grinding Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 239000011159 matrix material Substances 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 7
- 238000005070 sampling Methods 0.000 description 7
- 238000005538 encapsulation Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000003672 processing method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Abstract
A hydraulic pump plunger and sliding shoe assembly comprises a plunger and a sliding shoe, the plunger and the sliding shoe are in riveting connection, and a close-up fixed structure is arranged in an inner cavity of the sliding shoe so that it can be guaranteed that the plunger and the sliding shoe relatively move and are free of blocking. A plunger outer circle is arranged on the plunger, and an outer circle bottom transition arc is arranged at the lower end of the plunger outer circle. A spherical head neck and a plunger spherical head are arranged above the plunger outer circle, an inner cavity of the plunger is provided with a plunger inner conical face, the upper portion of the plunger inner conical face is communicated with a plunger oil channel through transition of an inside transition conical face, an oil path conical channel is arranged at the top end of the plunger spherical head, and the plunger oil channel is communicated with the oil path conical channel through a plunger damping hole. A sliding shoe inner spherical surface is arranged on the inner side of the close-up fixed structure, a sliding shoe oil channel in the middle of the sliding shoe inner spherical surface is communicated with a sliding shoe conical oil channel through a sliding shoe damping hole, eccentric pressure-bearing cavities of three levels are formed in the periphery of the sliding shoe damping hole, meanwhile, a damping oil channel is arranged on the pressure-bearing cavity of each level, the lower portion of the plunger inner conical face is arranged to be in small conicity, and the oil path conical channel is communicated with the sliding shoe oil channel.
Description
Technical field
The present invention relates to variable piston pump technical field, more particularly to a kind of hydraulic pump plunger slippery boots assembly and its processing side
Method.
Background technology
With developing rapidly for modernization plant equipment, particularly engineering machinery, injection machine, lathe and agricultural machinery etc.
The development in field, the demand of opposed hydraulic pump gradually increase, and how to improve the service life and reliability of pluger type hydraulic pump
Property, those skilled in the art's technical problem urgently to be resolved hurrily is had become with the requirement for meeting actual condition.But face at present
Technical problem be：Plunger is coordinated in installation process without auxiliary location structure with piston shoes, it is difficult to after ensureing that plunger is riveted with piston shoes
Can relative motion it is fluent；Plunger easily pulls cylinder sleeve when plunger cylinder is moved back and forth simultaneously, and then causes operation not smooth, and high
During speed operation, there is centrifugal force, be easily caused cylinder sleeve compressive deformation under effect of inertia；Additionally, only leading between piston shoes and plunger
Oil channel connects off-load, causes the hydraulic pressure force unbalance at its two ends, and then the normal conveying of impact pressure oil, and swash plate is by sliding
Boots promote plunger to produce malleation when pressing oil, and are unfavorable for that piston shoes change running status on swash plate, cause the abrasion of piston shoes.
The content of the invention
Technical problem solved by the invention is to provide a kind of hydraulic pump plunger slippery boots assembly and its processing method, to solve
Shortcoming in certainly above-mentioned background technology.
Technical problem solved by the invention employs the following technical solutions to realize：
Hydraulic pump plunger slippery boots assembly, including plunger and piston shoes, wherein, plunger is riveted with piston shoes, and is arranged on piston shoes
Have for plunger and the closing in fixed structure of piston shoes positioning, be provided with plunger for being installed on outside the plunger in plunger cylinder
Circle, and the cylindrical lower end of plunger is provided with cylindrical bottom transition circular arc with end face transition position, draws during for preventing plunger from moving back and forth
Hinder cylinder sleeve, while remaining on unimpeded；The cylindrical top of plunger is provided with bulb neck and plunger ball, and plunger cavity is provided with post
Plug inner conical surface, plunger inner conical surface top are connected with plunger oil duct by inner transition conical surface transition, and plunger ball top is provided with
Oil circuit tapered channel, plunger oil duct are connected with oil circuit tapered channel by plunger damping hole, pressure oil Jing plunger oil ducts, plunger resistance
Buddhist nun hole and oil circuit tapered channel are transitted in the related channel program structure of piston shoes；Closing in fixed structure is arranged on piston shoes inner chamber, and
Piston shoes Internal Spherical Surface being provided with the inside of closing in fixed structure, and piston shoes Internal Spherical Surface middle setting having piston shoes oil duct, piston shoes oil duct passes through
Piston shoes damping hole is connected with piston shoes taper oil duct, and piston shoes damping hole periphery is provided with one-level pressure-bearing die cavity, two grades of pressure-bearing types
Chamber and three-level pressure-bearing die cavity, while being provided with one-level damping oil duct on one-level pressure-bearing die cavity, are provided with two grades of pressure-bearing die cavities
Two grades of damping oil ducts, are provided with three-stage damping oil duct on three-level pressure-bearing die cavity；Additionally, plunger inner conical surface lower body portions are little
Taper is arranged, and oil circuit tapered channel is connected with piston shoes oil duct, and one-level pressure-bearing die cavity, two grades of pressure-bearing die cavities and three-level pressure-bearing die cavity
It is set for the eccentric, when swash plate promotes plunger to press oil by piston shoes, causes bias, contributes to piston shoes and change operation shape on swash plate
State, reduces the abrasion of piston shoes, eccentricity range 0.5mm～0.6mm.
In the present invention, after plunger is closed up with piston shoes riveting, plunger and piston shoes keep relative motion fluent, are hinged revolution
Angle is -21 °～+21 °, and gap 0.015mm～0.05mm to axial, and riveting stretching resistance is not less than 4500N.
In the present invention, plunger ball is provided with the first annular end face of plunger, the first ring of plunger with bulb neck transition position
Plunger First Transition circular arc is provided between shape end face and plunger ball, by plunger First Transition arc smooth transition, is easy to
Mutual smooth operation after processing of the plunger ball in grinding and guarantee assembling；The first annular end face of plunger and bulb neck
Between be provided with the second transition arc of plunger, by plunger the second transition arc transition, to increase bearing capacity and reduce stress；
And the cylindrical upper end of plunger is provided with the second annular end face of plunger with bulb neck transition position, outside the second annular end face of plunger and plunger
The 3rd transition arc of plunger is provided between circle, by the 3rd transition arc transition of plunger.
In the present invention, plunger inner conical surface lower body portions are arranged for Small Taper, and thin-walled can effectively reduce the used of plunger
Property, in plunger cylinder high-speed cruising, centrifugal force is substantially reduced, effectively reduce the compressive deformation of cylinder sleeve, so as to keep preferable
Design Theory characteristic, the inner transition conical surface preferably ensure that the integral transition of plunger and pressure-bearing mechanical characteristic.
In the present invention, closing in fixed structure include piston shoes transition taper surface, closing in transition inner ring road, close up in lack circle,
Closing in transition arc and piston shoes taper surface, wherein, piston shoes taper surface is arranged on the end face that piston shoes are riveted with plunger, is closed up interior lacking
Circle one end is connected with piston shoes taper surface by closing in transition arc, and the other end is connected with closing in transition inner ring road, piston shoes transition cone
Shape face is arranged on the inside of closing in transition inner ring road；Closing in transition inner ring road and piston shoes transition taper surface can effectively avoid right-hand member closing in
When the deformation that produces piston shoes Internal Spherical Surface is impacted, close up in lack circle and be conducive to deformation of closing up, and can reduce to ball in piston shoes
The impact in face, and closing in transition arc can make plunger after closing in, piston shoes smooth activity in plunger, without clamping stagnation.
In the present invention, be provided with piston shoes annular end face outside piston shoes cylindrical with piston shoes transition, and piston shoes annular end face with
The cylindrical junction of piston shoes transition is provided with piston shoes anti-interference deep gouge, for preventing piston shoes from producing interference with platen when loading whole machine.
In the present invention, when plunger pump oil is run, pressure oil Jing plunger oil ducts, plunger damping hole and oil circuit tapered channel
It is transitioned into piston shoes oil duct, piston shoes damping hole and piston shoes taper oil duct and pours one-level pressure-bearing die cavity, and Jing one-levels damping oil duct stream enters
Two grades of pressure-bearing die cavities, then bis- grades of damping oil ducts inflow three-level pressure-bearing die cavities of Jing, final Jing three-stage dampings oil duct off-load, in whole mistake
It is damping off-load in journey, so that component two ends keep hydraulic coupling relative equilibrium, wherein plunger damping hole effectively reduce pressure
The impact of oil, it is ensured that piston shoes are fitted with swash plate.
In the present invention, plunger assembly need to possess the characteristics such as wear-resisting, corrosion-resistant and impact resistance, and according to actually used need
Will, part-structure needs higher machining accuracy, and the dimensional accuracy of plunger ball is -0.005mm～-0.013mm, and plunger is cylindrical
Dimensional accuracy be -0.012mm～-0.02mm, the dimensional accuracy in closing in transition inner ring road is+0.005mm～+0.015mm, its
Remaining body structure surface is required for machining requirements IT6 class precisions.
Hydraulic pump plunger slippery boots assembly processing method, comprises the following steps that：
1st, the preparation of plunger
1) matrix material is chosen, matrix material selects quenched polishing bar, processes using double dynamical main shaft automatic lathe, together
When stay following process surplus in the outer bowlder of processing plunger ball and plunger, obtain plunger base substrate；And in double dynamical main shaft automatic lathe
Production development sampling observation detector is inside installed, critical size is detected, with the machining accuracy for ensureing to produce in batches, effective control is scrapped
Rate；
2) to step 1) in the plunger base substrate that obtains carry out surface gas nitrogen treatment, grinding front surface hardness is not less than
850HV0.2,0.35～0.5mm of depth of penetration；
3) after step 2) in after plunger billet surface gas nitriding is disposed, its two ends is positioned, using form grinder
It is cylindrical with plunger that corase grind cuts plunger ball；
4) after step 3) in after plunger base substrate corase grind cuts and finishes, then grind plunger ball and require to design size；
5) again plunger base substrate two ends are positioned, and it is cylindrical using high-precision peripheral milling fine grinding plunger；
6) after step 5) after center pillar plug fine grinding cylinder finishes, then soft polishing plunger ball is cylindrical with plunger, and round and smooth polishing
Each transition arc, obtains plunger finished product；
7) to step 6) in obtain plunger finished product be sampled detection, sampling observation rate is not less than 5%, and sample detection is complete
Inspection；
8) to step 7) in the qualified plunger finished product of detection carry out cleaning corrosion protection and go magnetic treatment；
9) to step 8) in carry out clean corrosion protection degaussing be disposed plunger finished appearance detection it is qualified after, encapsulation warehouse-in
It is stand-by；
2nd, the preparation of piston shoes
1) matrix material is chosen, matrix material selects free-cutting brass bar, processes using double dynamical main shaft automatic lathe,
Following process surplus is stayed when piston shoes Internal Spherical Surface is processed simultaneously, piston shoes base substrate is obtained；And install in double dynamical main shaft automatic lathe
There is Production development sampling observation detector, detect critical size, with the machining accuracy for ensureing to produce in batches, effective control scrappage；
2) after step 1) in after piston shoes base substrate completion of processing, on piston shoes base substrate grinding piston shoes Internal Spherical Surface will to design size
Ask；
3) after step 2) in after piston shoes Internal Spherical Surface grinding on piston shoes base substrate finishes, piston shoes base substrate is carried out cleaning at corrosion protection
Reason, obtains piston shoes product；
4) to step 3) in obtain piston shoes finished product be sampled detection, sampling observation rate is not less than 5%, and sample detection is complete
Inspection；
5) to step 4) in the qualified piston shoes finished appearance detection of detection it is qualified after, encapsulation warehouse-in is stand-by；
3rd, plunger and piston shoes are assembled
Encapsulation warehouse-in stand-by piston shoes are set on plunger, and carry out shrink process, and axial gap 0.015mm～
0.07mm。
Beneficial effect：Arrange on piston shoes in the present invention by the closing in fixed structure positioned with piston shoes for plunger, to protect
After card plunger and piston shoes riveting can relative motion it is fluent, and the cylindrical lower end of plunger arranged on plunger and the setting of end face transition position
There is cylindrical bottom transition circular arc, for preventing plunger from cylinder sleeve is pulled when moving back and forth, while remaining on unimpeded；Plunger inner conical surface
Lower body portions are arranged for Small Taper, and thin-walled can effectively reduce the inertia of plunger, in plunger cylinder high-speed cruising, drop significantly
Low centrifugal force, effectively reduces the compressive deformation of cylinder sleeve；Piston shoes are connected by damping with plunger, so that component two ends keep hydraulic coupling
Relative equilibrium, and one-level pressure-bearing die cavity, two grades of pressure-bearing die cavities and three-level pressure-bearing die cavity be set for the eccentric, and is pushed away by piston shoes in swash plate
When dynamic plunger is pressed oil, bias is caused, contribute to piston shoes and change running status on swash plate, and then reduce the abrasion of piston shoes.
Description of the drawings
Front views of the Fig. 1 for presently preferred embodiments of the present invention.
Fig. 2 is the plunger sectional view in presently preferred embodiments of the present invention.
Fig. 3 is the plunger ball in presently preferred embodiments of the present invention and bulb neck partial sectional view.
Fig. 4 is the piston shoes sectional view in presently preferred embodiments of the present invention.
Fig. 5 is the piston shoes left view in presently preferred embodiments of the present invention.
Fig. 6 is the piston shoes annular end face in presently preferred embodiments of the present invention and closing in transition inner ring road partial sectional view.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to the hydraulic pump plunger slippery boots assembly of Fig. 1～Fig. 6, including plunger 1, oil circuit tapered channel 1-1, plunger ball 1-
2nd, bulb neck 1-3, inner transition conical surface 1-4, plunger inner conical surface 1-5, cylindrical bottom transition circular arc 1-6, the cylindrical 1-7 of plunger,
Neck transition arc 1-8, plunger oil duct 1-9, plunger damping hole 1-10, plunger First Transition circular arc 1-11, plunger are first annular
End face 1-12, plunger the second transition arc 1-13, plunger the second annular end face 1-14, the 3rd transition arc 1-15 of plunger, piston shoes
2nd, piston shoes annular end face 2-1, the cylindrical 2-2 of piston shoes transition, the interior scarce circle 2-3 of closing in, piston shoes taper surface 2-4, piston shoes oil duct 2-5, cunning
Boots Internal Spherical Surface 2-6, closing in transition inner ring road 2-7, piston shoes anti-interference deep gouge 2-8, one-level pressure-bearing die cavity 2-9, piston shoes damping hole 2-
10th, piston shoes taper oil duct 2-11, two grades of pressure-bearing die cavity 2-12, three-level pressure-bearing die cavity 2-13, one-level damping oil duct 2-14, two grades of resistances
Buddhist nun oil duct 2-15, three-stage damping oil duct 2-16, closing in transition arc 2-17, piston shoes transition taper surface 2-18.
In the present embodiment, as shown in figure 1, the plunger ball 1-2 arranged on plunger 1 and cunning after plunger 1 is riveted with piston shoes 2
Boots Internal Spherical Surface 2-6 coordinates, and the relative position for limiting plunger 1 and piston shoes 2 by closing up, it is desirable to after riveting is closed up, plunger 1 and sliding
Boots 2 keep relative motion fluent, are hinged angle of revolution for -21 °～+21 °, and gap 0.015mm～0.05mm to axial,
Riveting stretching resistance is not less than 4500N；Plunger 1 is installed in plunger cylinder by the cylindrical 1-7 of plunger, and lower end and end face transition position
Cylindrical bottom transition circular arc 1-6 is designed with, prevents plunger 1 from pulling cylinder sleeve when moving back and forth and bringing not smooth to operation, bulb
Neck 1-3 and the second annular end face of plunger 1-14, should to increase bearing capacity and reduction by neck transition arc 1-8 transition
Power, the first annular end face 1-12 of plunger and bulb neck 1-3 pass through plunger the second transition arc 1-13 transition, and the first ring of plunger
Shape end face 1-12 and plunger ball 1-2 is easy to plunger ball 1-2 by plunger First Transition circular arc 1-11 rounding ofves, the design
The mutual smooth operation after processing and guarantee assembling in grinding, plunger the second annular end face 1-14 and cylindrical 1-7 of plunger
By the 3rd transition arc 1-15 transition of plunger, the inner chamber lower body portions of plunger 1 are designed using Small Taper, and thin-walled can be effective
The inertia of plunger 1 is reduced, in plunger cylinder high-speed cruising, centrifugal force is substantially reduced, is effectively reduced the compressive deformation of cylinder sleeve, from
And preferable Design Theory characteristic is kept, inner transition conical surface 1-4 preferably ensure that the integral transition and pressure-bearing stress of plunger 1
Characteristic；
When 1 pump oil of plunger is run, pressure oil Jing inner chambers and plunger oil duct 1-9, plunger damping hole 1-10 and oil circuit taper
Passage 1-1 is transitioned in the related channel program structure of piston shoes 2, and wherein plunger damping hole 1-10 can effectively reduce rushing for pressure oil
Hit, it is ensured that piston shoes 2 are fitted with swash plate；Piston shoes annular end face 2-1 is designed with piston shoes with the cylindrical 2-2 bound fractions of piston shoes transition to be prevented
Interfere deep gouge 2-8, when preventing from loading whole machine, interference, the piston shoes transition taper surface 2-18 designed by inner chamber, closing in is produced with platen
Transition inner ring road 2-7, the interior circle 2-3, closing in transition arc 2-17 and piston shoes taper surface 2-4 of lacking that close up are closing in fixed structure,
Closing in transition inner ring road 2-7 and piston shoes transition taper surface 2-18 can effectively avoid the deformation produced when right-hand member closes up to ball in piston shoes
Face 2-6 is impacted, and the interior circle 2-3 that lacks that closes up is conducive to deformation of closing up, and can reduce the impact to piston shoes Internal Spherical Surface 2-6 part,
Designed closing in transition arc 2-17 can make the smooth activity in the plunger 1 of piston shoes 2 after closing in of plunger 1, without clamping stagnation, work as component
When loading whole machine work, pressure oil Jing plunger oil duct 1-9, plunger damping hole 1-10, oil circuit tapered channel 1-1, piston shoes oil duct 2-
5th, piston shoes damping hole 2-10 and piston shoes taper oil duct 2-11 pour one-level pressure-bearing die cavity 2-9, and Jing one-levels damping oil duct 2-14 streams
Enter two grades of pressure-bearing die cavity 2-12, then bis- grades of damping oil duct 2-15 of Jing flow into three-level pressure-bearing die cavity 2-13, final Jing three-stage dampings oil
Road 2-16 off-loads, are damping off-loads, so that component two ends keep hydraulic coupling relative equilibrium, and one-level pressure-bearing type in whole process
Chamber 2-9, two grades of pressure-bearing die cavity 2-12 and three-level pressure-bearing die cavity 2-13 are eccentric design, promote plunger force feed in swash plate by piston shoes
When, bias is caused, is contributed to piston shoes and is changed running status on swash plate, reduce the abrasion of piston shoes, scope 0.5mm of eccentric throw d
～0.6mm.
In the present embodiment, plunger assembly need to possess the characteristics such as wear-resisting, corrosion-resistant and impact resistance, and according to actually used need
Will, part-structure needs higher machining accuracy, and the dimensional accuracy of plunger ball 1-2 is -0.005mm～-0.013mm, plunger
The dimensional accuracy of cylindrical 1-7 is -0.012mm～-0.02mm, the dimensional accuracy of closing in transition inner ring road 2-7 be+0.005mm～+
0.015mm, remaining body structure surface are required for machining requirements IT6 class precisions.
In the present embodiment, hydraulic pump plunger slippery boots assembly processing method, comprises the following steps that：
1st, the preparation of plunger 1
1) matrix material is chosen, matrix material selects quenched polishing bar, processes using double dynamical main shaft automatic lathe, together
When stay following process surplus when the cylindrical 1-7 of plunger ball 1-2 and plunger is processed, obtain plunger base substrate；And in double dynamical main shaft certainly
Production development sampling observation detector is installed in motor-car bed, critical size is detected, with the machining accuracy for ensureing to produce in batches, is effectively controlled
Scrappage processed；
2) to step 1) in the plunger base substrate that obtains carry out surface gas nitrogen treatment, grinding front surface hardness is not less than
850HV0.2,0.35～0.5mm of depth of penetration；
3) after step 2) in after plunger billet surface gas nitriding is disposed, its two ends is positioned, using form grinder
Corase grind cuts the plunger ball 1-2 and cylindrical 1-7 of plunger；
4) after step 3) in after plunger base substrate corase grind cuts and finishes, then grind plunger ball 1-2 and require to design size；
5) again plunger base substrate two ends are positioned, and using the cylindrical 1-7 of high-precision peripheral milling fine grinding plunger；
6) after step 5) center pillar is justified after 1-7 fine grindings finish beyond the Great Wall, then soft polishing plunger ball 1-2 and the cylindrical 1-7 of plunger, and
It is round and smooth to polish each transition arc, obtain plunger finished product；
7) to step 6) in obtain plunger finished product be sampled detection, sampling observation rate is not less than 5%, and sample detection is complete
Inspection；
8) to step 7) in the qualified plunger finished product of detection carry out cleaning corrosion protection and go magnetic treatment；
9) to step 8) in carry out clean corrosion protection degaussing be disposed plunger finished appearance detection it is qualified after, encapsulation warehouse-in
It is stand-by；
2nd, the preparation of piston shoes 2
1) matrix material is chosen, matrix material selects free-cutting brass bar, processes using double dynamical main shaft automatic lathe,
Following process surplus is stayed when piston shoes Internal Spherical Surface 2-6 is processed simultaneously, piston shoes base substrate is obtained；And pacify in double dynamical main shaft automatic lathe
Detector is inspected by random samples equipped with Production development, critical size is detected, with the machining accuracy for ensureing to produce in batches, effective control scrappage；
2) after step 1) in after piston shoes base substrate completion of processing, grind piston shoes Internal Spherical Surface 2-6 on piston shoes base substrate to designing chi
Very little requirement；
3) after step 2) in after piston shoes Internal Spherical Surface 2-6 grinding on piston shoes base substrate finishes, carry out cleaning to piston shoes base substrate anti-
Erosion is processed, and obtains piston shoes product；
4) to step 3) in obtain piston shoes finished product be sampled detection, sampling observation rate is not less than 5%, and sample detection is complete
Inspection；
5) to step 4) in the qualified piston shoes finished appearance detection of detection it is qualified after, encapsulation warehouse-in is stand-by；
3rd, plunger 1 and piston shoes 2 are assembled
Encapsulation warehouse-in stand-by piston shoes 2 are set on plunger 1, and carry out shrink process, and axial gap 0.015mm～
0.07mm。
The ultimate principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (6)
1. hydraulic pump plunger slippery boots assembly, including plunger and piston shoes, it is characterised in that plunger is riveted with piston shoes, and on piston shoes
It is provided with for plunger and the closing in fixed structure of piston shoes positioning, on plunger, is provided with the plunger for being installed in plunger cylinder
It is cylindrical, and the cylindrical lower end of plunger is provided with cylindrical bottom transition circular arc with end face transition position；The cylindrical top of plunger is provided with bulb
Neck and plunger ball, plunger cavity are provided with plunger inner conical surface, plunger inner conical surface top by inner transition conical surface transition with
Plunger oil duct is connected, and plunger ball top is provided with oil circuit tapered channel, and plunger oil duct is by plunger damping hole and oil circuit taper
Channel connection；Closing in fixed structure is arranged on piston shoes inner chamber, and on the inside of closing in fixed structure is provided with piston shoes Internal Spherical Surface, and slides
Boots Internal Spherical Surface middle setting has piston shoes oil duct, and piston shoes oil duct is connected with piston shoes taper oil duct by piston shoes damping hole, and in piston shoes
Damping hole periphery is provided with one-level pressure-bearing die cavity, two grades of pressure-bearing die cavities and three-level pressure-bearing die cavity, while on one-level pressure-bearing die cavity
One-level damping oil duct is provided with, two grades of damping oil ducts is provided with two grades of pressure-bearing die cavities, on three-level pressure-bearing die cavity, is provided with three-level
Damping oil duct；Additionally, plunger inner conical surface lower body portions are arranged for Small Taper, oil circuit tapered channel is connected with piston shoes oil duct,
And one-level pressure-bearing die cavity, two grades of pressure-bearing die cavities and three-level pressure-bearing die cavity are set for the eccentric, eccentricity range 0.5mm～0.6mm；Receive
Mouth fixed structure includes piston shoes transition taper surface, closing in transition inner ring road, close up interior scarce circle, closing in transition arc and piston shoes taper
Face, wherein, piston shoes taper surface is arranged on the end face that piston shoes are riveted with plunger, and interior circle one end that lacks of closing up is by closing in transition arc
It is connected with piston shoes taper surface, the other end is connected with closing in transition inner ring road, and piston shoes transition taper surface is arranged on closing in transition inner ring
On the inside of road.
2. hydraulic pump plunger slippery boots assembly according to claim 1, it is characterised in that plunger and piston shoes keep relative motion
It is fluent, angle of revolution is hinged for -21 °～+21 °, and gap 0.015mm～0.05mm to axial, rivet stretching resistance not low
In 4500N.
3. hydraulic pump plunger slippery boots assembly according to claim 1, it is characterised in that plunger ball and bulb neck transition
Place is provided with the first annular end face of plunger, is provided with plunger First Transition circle between the first annular end face of plunger and plunger ball
Arc, is provided with the second transition arc of plunger between the first annular end face of plunger and bulb neck.
4. hydraulic pump plunger slippery boots assembly according to claim 1, it is characterised in that the cylindrical upper end of plunger and bulb neck
Transition position is provided with the second annular end face of plunger, the second annular end face of plunger and plunger it is cylindrical between be provided with the 3rd transition of plunger
Circular arc.
5. hydraulic pump plunger slippery boots assembly according to claim 1, it is characterised in that be provided with piston shoes annular outside piston shoes
End face is cylindrical with piston shoes transition.
6. hydraulic pump plunger slippery boots assembly according to claim 5, it is characterised in that piston shoes annular end face and piston shoes transition
Cylindrical junction is provided with piston shoes anti-interference deep gouge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850155.4A CN104533780B (en) | 2014-12-30 | 2014-12-30 | Hydraulic pump plunger and sliding shoe assembly and machining method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850155.4A CN104533780B (en) | 2014-12-30 | 2014-12-30 | Hydraulic pump plunger and sliding shoe assembly and machining method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104533780A CN104533780A (en) | 2015-04-22 |
| CN104533780B true CN104533780B (en) | 2017-03-22 |
Family
ID=52849369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410850155.4A Expired - Fee Related CN104533780B (en) | 2014-12-30 | 2014-12-30 | Hydraulic pump plunger and sliding shoe assembly and machining method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104533780B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020203679A1 (en) | 2020-03-23 | 2021-09-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Slide shoe for a piston of an axial piston machine |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215685B (en) * | 2015-09-22 | 2017-07-21 | 宁波市鄞州欧姆柯液压机电有限公司 | The preparation method of plunger piston slippery boots assembly |
| CN107781157B (en) * | 2017-10-24 | 2018-11-16 | 徐州工业职业技术学院 | A kind of hydraulic pump plunger reducing flow pulsation |
| CN110608165A (en) * | 2018-06-15 | 2019-12-24 | 郑州奥特科技有限公司 | Plunger assembly, lubricating pump, plunger and plunger machining method |
| CN112222788A (en) * | 2020-10-23 | 2021-01-15 | 江苏远业液压机械有限公司 | Plunger piston shoe machining method |
| CN112894271B (en) * | 2020-12-29 | 2023-02-28 | 沈阳黎明航空零部件制造有限公司 | Processing technology of filter shell |
| CN113236551A (en) * | 2021-05-11 | 2021-08-10 | 北京中金泰达电液科技有限公司 | Plunger piston shoe assembly and plunger pump |
| CN114382671B (en) * | 2021-10-29 | 2023-08-08 | 中国航发西安动力控制科技有限公司 | Selection and matching method of plunger assembly with retainer ring |
| CN115095497B (en) * | 2022-07-11 | 2023-04-07 | 济南博尔动力设备有限公司 | Plunger pump |
| CN115533673A (en) * | 2022-09-19 | 2022-12-30 | 宁波博曼特工业有限公司 | Hydraulic pump plunger ball head polishing equipment and polishing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979879A (en) * | 2010-10-20 | 2011-02-23 | 江苏欧盛液压科技有限公司 | Novel plunger sliding shoe component |
| CN202250585U (en) * | 2011-09-13 | 2012-05-30 | 龙工（上海）桥箱有限公司 | Piston shoe for hydraulic motor |
| CN102926987A (en) * | 2012-11-28 | 2013-02-13 | 无锡威孚精密机械制造有限责任公司 | Slipper used for plunger type hydraumatic pump |
| CN202991438U (en) * | 2012-11-28 | 2013-06-12 | 无锡威孚精密机械制造有限责任公司 | Plunger-type oil hydraulic pump purpose sliding shoe |
| GB2502623A (en) * | 2012-06-01 | 2013-12-04 | Rolls Royce Engine Control Systems Ltd | Piston device with mechanism to secure piston to slipper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5198780B2 (en) * | 2007-03-22 | 2013-05-15 | 公益財団法人相模中央化学研究所 | Amide compound and method for producing the same |
-
2014
- 2014-12-30 CN CN201410850155.4A patent/CN104533780B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979879A (en) * | 2010-10-20 | 2011-02-23 | 江苏欧盛液压科技有限公司 | Novel plunger sliding shoe component |
| CN202250585U (en) * | 2011-09-13 | 2012-05-30 | 龙工（上海）桥箱有限公司 | Piston shoe for hydraulic motor |
| GB2502623A (en) * | 2012-06-01 | 2013-12-04 | Rolls Royce Engine Control Systems Ltd | Piston device with mechanism to secure piston to slipper |
| CN102926987A (en) * | 2012-11-28 | 2013-02-13 | 无锡威孚精密机械制造有限责任公司 | Slipper used for plunger type hydraumatic pump |
| CN202991438U (en) * | 2012-11-28 | 2013-06-12 | 无锡威孚精密机械制造有限责任公司 | Plunger-type oil hydraulic pump purpose sliding shoe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020203679A1 (en) | 2020-03-23 | 2021-09-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Slide shoe for a piston of an axial piston machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104533780A (en) | 2015-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104533780B (en) | Hydraulic pump plunger and sliding shoe assembly and machining method thereof | |
| US10661358B2 (en) | Tool head for a modular shank tool | |
| CN104999380B (en) | Abrasive Flow burnishing device is used in a kind of mould processing | |
| CN103143667B (en) | Production method of formation of gear and gear manufactured according to same | |
| CN104723045A (en) | Machining process and tool for shaft with inner step hole with large depth-diameter ratio | |
| EP3148733B1 (en) | Method of manufacturing a component of a turbomachine | |
| US20180361476A1 (en) | Designing and manufacturing method for powder injection molding piston ring | |
| CN104373405B (en) | Servo valve body and machining method of servo valve body | |
| CN105499938A (en) | Sliding bearing machining process | |
| CN103084807B (en) | sliding bearing processing technology | |
| CN205685186U (en) | A kind of centrifugal impeller abrasive Flow fixture | |
| CN106112796A (en) | A kind of double end internal grinding electro spindle | |
| CN104454328B (en) | Motor plunger component and machining method thereof | |
| CN204371652U (en) | Hydraulic pump plunger slippery boots assembly | |
| CN109926533A (en) | A kind of precision plastic forming method of bevel gear | |
| CN102059509A (en) | Processing method of double-section drive axle space ring | |
| CN103335018A (en) | Inner-ring small-flange separation type conical roller bearing and assembling method thereof | |
| CN101504037A (en) | Low-noise accurate miniature iron shot manufacturing process | |
| CN204171179U (en) | A kind of shaping mould of dust cap | |
| CN204819139U (en) | Grinding machine quill structure | |
| CN102922216A (en) | Method and device for surface precision truing of inner hole of bearing bush | |
| CN203542352U (en) | Superhard grinder for hole machining | |
| CN204320933U (en) | A kind of stretching die of dust cap | |
| CN111033037B (en) | Manufacturing method, plunger blank, plunger and axial plunger type machine with plunger | |
| CN202824416U (en) | Bearing bush extrusion reshaping mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |