CN105545725B - A kind of plunger pump plunger and its preparation process with bionical micro-structure surface feature - Google Patents
A kind of plunger pump plunger and its preparation process with bionical micro-structure surface feature Download PDFInfo
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- CN105545725B CN105545725B CN201610035246.1A CN201610035246A CN105545725B CN 105545725 B CN105545725 B CN 105545725B CN 201610035246 A CN201610035246 A CN 201610035246A CN 105545725 B CN105545725 B CN 105545725B
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- plunger
- groove
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- hand helix
- spiral
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention provides a kind of plunger pump plunger and its preparation process with bionical micro-structure surface feature, belongs to hydraulic transmission technology field.The plunger includes left-turn spiral groove and right hand helix groove, opens and is arranged at 1/3 length of plunger external cylindrical surface from plunger end chamfer, and the bionic surface with bionical micro-structure surface feature is formed in plunger external cylindrical surface；Left-turn spiral groove and right hand helix groove are connected by the oil groove mouth opened up at plunger end chamfer with oil pocket in cylinder body, effective lubrication, cooling and sealing oil film can be formed in plunger copper inner room during plunger motion, so as to improve the greasy property and frictional behavior of plunger pair.The present invention processes bionical micro-structure surface feature by the method for lathe turning in plunger external cylindrical surface, has many advantages, such as that process is simple and convenient, of low cost, brief and practical.
Description
Technical field：
The invention belongs to hydraulic transmission technology fields, and in particular to a kind of plunger pump with bionical micro-structure surface feature
With plunger and its preparation process.
Background technology：
In hydraulic drive field, axial plunger pump is widely used due to superior performance.Axial plunger pump
Operation principle is to move back and forth generated volume variation in cylinder body using plunger to carry out oil suction and oil extraction.It is closed in plunger pump
In key building block, lubrication, sealing and the surface of plunger-copper sheathing pair contact situation to the task performance of plunger pump and use the longevity
Life has important influence.Therefore, carrying out rational design to plunger-copper sheathing pair has to pass weight the performance for improving plunger pump
The effect wanted.
Researcher has carried out a large amount of research for some secondary existing problems of axial plunger.Somewhat by change plunger
Or the material of copper sheathing improves the contact performance of plunger pair；Also have improves plunger by processing bionical micro forming in plunger surface
Secondary lubrication and friction and wear characteristic.As Chinese patent CN103867432A discloses a kind of height with bionic non-smooth surface
Press sea water plunger pump piston friction pair, by plunger pair friction surface process through-hole and pit shape cell cube formed it is bionical
Non-smooth surface improves the lubrication property, bearer properties and friction and wear characteristic of plunger pair.It was verified that passing through bionics
Method process biomimetic features in body surface, be conducive to improve its surface property.The present invention passes through bionical shark placoid scale
Diamond-type rib strip structure processes bionical micro-structure surface feature in plunger surface, reach improve plunger pair greasy property and
The effect of frictional behavior.Meanwhile determining the preparation process of the plunger.
Invention content：
The purpose of the present invention is to provide a kind of plunger pump plunger with bionical micro-structure surface feature and its preparations
Technique.It can be effectively improved the lubricity of plungers pump plunger pair while ensureing plunger pair good sealing property by the plunger
Can, to reach the fretting wear reduced between plunger and copper sheathing, extend the purpose of plunger pump service life.Pass through the preparation work
Skill can succinctly, practicably process the required plunger with bionical micro-structure surface feature.The present invention is mainly by imitative
The diamond-type rib strip structure of raw shark placoid scale is processed in plunger surface with bionical micro-structure using the method for lathe turning
The bionic surface of surface characteristics.
A kind of plunger pump plunger with bionical micro-structure surface feature provided by the present invention includes left-turn spiral ditch
Slot 7 and right hand helix groove 8；The left-turn spiral groove 7 and the right hand helix groove 8, from 4 end chamfer of the plunger
It opens and is arranged at 1/3 length of 4 external cylindrical surface of the plunger；The left-turn spiral groove 7 and the right hand helix groove 8
Cross sectional shape be rectangle or semicircle, the width in plunger surface or a diameter of 0.1-0.5mm, left-hand screw angle is β1,
Right-hand screw angle is β2, β1And β2Value range be 20-40 °；The left-turn spiral groove 7 and the right hand helix groove 8
From 4 end face of the plunger, same starting point opens, and the groove of the left-turn spiral groove 7 and the right hand helix groove 8
Starting point is evenly distributed on the whole circumference face of 4 end face of the plunger；The groove starting point is 8,9 or 10, the ditch
Slot starting point is 45 ° or 40 ° with the line in the 4 end face center of circle of the plunger and the angle α of the horizontal center line of 4 end face of plunger circle
Or 36 °.The left-turn spiral groove 7 and the right hand helix groove 8 are formed at 1/3 length of 4 external cylindrical surface of the plunger
Bionic surface with bionical micro-structure surface feature.
In plunger pump work, the left-turn spiral groove 7 and the right hand helix groove 8 are formed with bionical micro-structure
The bionic surface of surface characteristics is always positioned at the inside of the copper sheathing 3, ensure that plunger pair has good leakproofness.Meanwhile
The left-turn spiral groove 7 and the right hand helix groove 8 pass through the oil groove mouth and cylinder body that are opened up at 4 end chamfer of the plunger
2 inner cavities are connected, and when the plunger 4 moves back and forth in the cylinder body 2, the high pressure oil of 2 inner cavity of cylinder body can pass through
The oil groove mouth opened up at 4 end chamfer of the plunger enters the left-turn spiral groove 7 and the right hand helix groove 8, in column
Effective lubrication, cooling and sealing oil film are formed between plug-copper sheathing, so as to improve the lubrication property of plunger pair.
A kind of plunger pump with bionical micro-structure surface feature provided by the present invention is by following preparation with plunger
Prepared by technique：
(1) size of plunger blank is determined according to drawing requirement, then passes through triangle chuck clamping plunger blank, rough turn column
The periphery for filling in blank selects rectangle lathe tool or billmpse tool according to the cross sectional shape of spiral grooves；According to rectangle or semicircle
The groove width of tee section or a diameter of 0.1-0.5mm, determine the amount of feeding of lathe tool, according to the spiral angle β of spiral grooves1
And β2It is 20-40 °, determines the relationship between the feed speed of main shaft and workpiece rotational frequency, then circumferentially gets on the bus in plunger periphery
Left-turn spiral groove 7 and right hand helix groove 8 are cut, then turning goes out spherical surface；Wherein, the depth of spiral grooves is by processing groove
Lathe tool type depending on.
(2) Carburization Treatment is carried out after turning is completed, the thickness of carburizing is 0.7-0.9mm；It quenches plunger after carburizing
Fire processing, increases the hardness on its surface, and quenched hardness is HRC59-64.
(3) after being heat-treated, plunger periphery is ground by plain external grinding machine, grinding allowance is 0.2-
0.3mm ensures that plunger has good concentricity and circularity, and it is 0.1 μm to control plunger surface roughness Ra.
The present invention has following technical characterstic：
1, bionical shagreen is widely used in many fields with its superior resistance reducing performance, and the present invention passes through bionical shark
The diamond-type rib strip structure of fish placoid scale processes bionical micro-structure surface at 1/3 length of plunger external cylindrical surface, ensure that column
The secondary good sealing property of plug.Meanwhile it can be formed between plunger-copper sheathing during piston reciprocation moves and effectively being lubricated, is cold
But with sealing oil film, so as to improve the greasy property and frictional behavior of plunger pair.
2, the present invention processes bionical micro-structure surface feature by the method for lathe turning in plunger external cylindrical surface, has
The advantages that process is simple and convenient, of low cost, brief and practical.Meanwhile the processing method has higher Modulatory character, it can
To process required bionical micro-structure surface feature in plunger external cylindrical surface according to specific demand.
Description of the drawings：
Fig. 1 is plunger main structure diagram of the present invention；
Fig. 2 is the bionical micro-structure surface feature local I enlarged structure schematic diagram of plunger surface of the present invention in Fig. 1；
Fig. 3 is spiral grooves in the present invention in plunger end EDS maps schematic diagram；
Fig. 4 is plunger surface spiral grooves rectangular cross section schematic diagram of the present invention；
Fig. 5 is plunger surface spiral grooves semi-circular schematic diagram of the present invention；
Fig. 6 is that plunger of the present invention is applied to cam-type axial piston pump structural schematic diagram.
In figure：1：Main shaft；2：Cylinder body；3：Copper sheathing；4：Plunger；5：Piston shoes；6：Swash plate；7：Left-turn spiral groove；8：Dextrorotation
Spiral grooves.
Specific implementation mode：
A kind of plunger pump plunger with bionical micro-structure surface feature provided by the present invention, which includes left-handed
Spiral grooves 7 and right hand helix groove 8；Left-turn spiral groove 7 and right hand helix groove 8 open simultaneously from 4 end chamfer of plunger
It is arranged at 1/3 length of 4 external cylindrical surface of plunger；The cross sectional shape of left-turn spiral groove 7 and right hand helix groove 8 be rectangle or
Semicircle, in the width or a diameter of 0.1-0.5mm, spiral angle β of plunger surface1And β2, β1、β2Value range be
20—40°；The left-turn spiral groove 7 and the right hand helix groove 8 are opened from the same starting point in 4 end face of the plunger, institute
The groove starting point for stating left-turn spiral groove 7 and the right hand helix groove 8 is evenly distributed on the whole circumference of 4 end face of the plunger
On face；The groove starting point is 8,9 or 10, the line in the groove starting point and the 4 end face center of circle of the plunger with it is described
The angle α of the horizontal center line of 4 end face of plunger circle is 45 ° or 40 ° or 36 °.Left-turn spiral groove 7 and right hand helix groove 8 exist
The bionic surface with bionical micro-structure surface feature is formed at 1/3 length of 4 external cylindrical surface of plunger.
As shown in fig. 6, plunger of the present invention includes main shaft 1, cylinder body 2, copper sheathing 3, plunger applied to cam-type axial piston pump
4, piston shoes 5, swash plate 6.The rotation of main shaft 1 drives cylinder body 2 and swash plate 6 to rotate so that plunger 4 moves back and forth in copper sheathing.Fortune
During dynamic, the bionic surface with bionical micro-structure surface feature being arranged at 1/3 length of 4 external cylindrical surface of plunger is always
In copper sheathing, it ensure that plunger has good sealing performance.Meanwhile the high pressure oil of 2 inner cavity of cylinder body can pass through 4 end face of plunger
The oil groove mouth opened up at chamfering enters left-turn spiral groove 7 and right hand helix groove 8, and effective profit is formed between plunger-copper sheathing
Sliding, cooling and sealing oil film, so as to improve the lubrication property and frictional behavior of plunger pair.
A kind of preparation process of plunger pump plunger with bionical micro-structure surface feature provided by the present invention is specific
It is as follows：Process route is：At blanking-numerical control lathe (turning, rectangle or semi-circular cross-section spiral grooves and spherical surface)-heat
Manage (quenching after carbunse)-grinding (outer circle and spherical surface).
Preparation process is as follows：First, the size that plunger blank is determined according to drawing requirement, then passes through triangle
Clamping chuck plunger blank, the periphery of rough turn plunger blank, according to the cross sectional shape of spiral grooves select rectangle lathe tool or
Billmpse tool；According to the groove width or a diameter of 0.1-0.5mm of rectangle or semi-circular cross-section, the amount of feeding of lathe tool, root are determined
According to the angle beta of spiral grooves1And β2It is 20-40 °, determines the relationship between the feed speed of main shaft and workpiece rotational frequency, then exist
The circumferentially upper turning left-turn spiral groove 7 of plunger periphery and right hand helix groove 8, then turning go out spherical surface；Turning completes it
After carry out Carburization Treatment, the thickness of carburizing is 0.7-0.9mm；Quenching treatment is carried out to plunger after carburizing, increases the hard of its surface
Degree, quenched hardness are HRC59-64；After heat treatment, plunger periphery is ground by plain external grinding machine, is ground
Surplus is 0.2-0.3mm, ensures that plunger has good concentricity and circularity, and it is 0.1 μ to control plunger surface roughness Ra
m.Wherein, depending on the depth of groove is by the lathe tool type of processing groove.
Claims (2)
1. a kind of plunger pump plunger with bionical micro-structure surface feature, it is characterised in that the plunger includes left-turn spiral ditch
Slot (7) and right hand helix groove (8)；The left-turn spiral groove (7) and the right hand helix groove (8) are from the plunger (4)
It opens and is arranged at 1/3 length of the plunger (4) external cylindrical surface at section chamfering, and in the plunger (4) external cylindrical surface
1/3 length at form the bionic surface with bionical micro-structure surface feature, the left-turn spiral groove (7) and the dextrorotation
Spiral grooves (8) are connected by the oil groove mouth at the plunger (4) end chamfer with oil pocket in cylinder body, in plunger motion process
In effective lubrication, cooling and sealing oil film can be formed between plunger-copper sheathing；
Rectangular cross-section or the semicircle of the left-turn spiral groove (7) and the right hand helix groove (8), the rectangle or half
The spiral shell of the width of circular cross-section or a diameter of 0.1-0.5mm, the left-turn spiral groove (7) and the right hand helix groove (8)
Swing angle degree distinguish β 1, β 2, the β 1, β 2 value range be 20-40 °；
The left-turn spiral groove (7) and the right hand helix groove (8) are opened from the same starting point in the plunger (4) end face,
And the groove starting point of the left-turn spiral groove (7) and the right hand helix groove (8) is evenly distributed on the plunger (4) end
On the whole circumference face in face；The groove starting point is 8,9 or 10, one of them described groove starting point and the plunger
(4) angle α of the line in the end face center of circle and the horizontal center line of the plunger (4) end face circle is 45 ° or 40 ° or 36 °.
2. the preparation process of the plunger pump plunger described in claim 1 with bionical micro-structure surface feature, feature exist
It is specific as follows in the preparation process：
(1) size of plunger blank is determined according to drawing requirement, then passes through triangle chuck clamping plunger blank, rough turn plunger hair
The periphery of base selects rectangle lathe tool or billmpse tool according to the cross sectional shape of spiral grooves；According to rectangle or semicircle section
The groove width in face or a diameter of 0.1-0.5mm, determine the amount of feeding of lathe tool, according to the spiral angle β 1 and β 2 of spiral grooves
It is 20-40 °, determines the relationship between the feed speed of main shaft and workpiece rotational frequency, it is then left in the circumferentially upper turning of plunger periphery
Rotation spiral grooves (7) and right hand helix groove (8), then turning go out spherical surface；Wherein, the depth of spiral grooves is by processing groove
Lathe tool type depending on；
(2) Carburization Treatment is carried out after turning is completed, the thickness of carburizing is 0.7-0.9mm；Plunger is carried out at quenching after carburizing
Reason, increases the hardness on its surface, and quenched hardness is HRC59-64；
(3) after being heat-treated, plunger periphery is ground by plain external grinding machine, grinding allowance is 0.2-0.3mm, is protected
Demonstrate,proving plunger has good concentricity and circularity, and it is 0.1 μm to control plunger surface roughness Ra.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035246.1A CN105545725B (en) | 2016-01-19 | 2016-01-19 | A kind of plunger pump plunger and its preparation process with bionical micro-structure surface feature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035246.1A CN105545725B (en) | 2016-01-19 | 2016-01-19 | A kind of plunger pump plunger and its preparation process with bionical micro-structure surface feature |
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| Publication Number | Publication Date |
|---|---|
| CN105545725A CN105545725A (en) | 2016-05-04 |
| CN105545725B true CN105545725B (en) | 2018-08-21 |
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| CN201610035246.1A Active CN105545725B (en) | 2016-01-19 | 2016-01-19 | A kind of plunger pump plunger and its preparation process with bionical micro-structure surface feature |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107461314A (en) * | 2017-09-19 | 2017-12-12 | 浙江湖州大新能源科技有限公司 | A kind of internal-suction type is without oily piston brake air pump |
| CN108488066A (en) * | 2018-04-03 | 2018-09-04 | 西南石油大学 | The bionical piston of slush pump spiral |
| CN109097724B (en) * | 2018-09-18 | 2019-09-10 | 华中农业大学 | The preparation method of biomimetic features is strengthened in a kind of carburizing based on pulsed arc |
| CN111659908B (en) * | 2020-06-19 | 2021-08-13 | 重庆郭氏洪伸科技有限公司 | Turning-based cylindrical surface reticulate pattern machining method and system |
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| CN202954965U (en) * | 2012-12-02 | 2013-05-29 | 安徽工业大学 | Plunger with spiral lubricating oil grooves and used for inclined-disc-type axial plunger pump |
| CN103867432A (en) * | 2014-02-24 | 2014-06-18 | 燕山大学 | Plunger friction pair of high-pressure seawater axial plunger pump with bionic non-smooth surface |
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| CN205370958U (en) * | 2016-01-19 | 2016-07-06 | 安徽工业大学 | Plunger for plunger pump with bionical micro -structure surface characteristics |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003343424A (en) * | 2002-05-24 | 2003-12-03 | Mitsubishi Heavy Ind Ltd | Swash plate type fluid pump/motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB752329A (en) * | 1953-12-24 | 1956-07-11 | Lammert Lenting | A piston for a piston engine |
| CN201461934U (en) * | 2009-04-13 | 2010-05-12 | 石家庄金刚内燃机零部件集团有限公司 | Blank of piston pin |
| CN101574769A (en) * | 2009-05-21 | 2009-11-11 | 天津辰龙重工机械有限公司 | Surface treatment method of piston for quartering hammer |
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| CN103867432A (en) * | 2014-02-24 | 2014-06-18 | 燕山大学 | Plunger friction pair of high-pressure seawater axial plunger pump with bionic non-smooth surface |
| CN203867872U (en) * | 2014-05-06 | 2014-10-08 | 浙江科力车辆控制系统有限公司 | Novel oscillating plunger for oil pump |
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