CN105545725A - Plunger piston having bionic microstructural surface feature and used for plunger pump and manufacturing process of plunger piston - Google Patents
Plunger piston having bionic microstructural surface feature and used for plunger pump and manufacturing process of plunger piston Download PDFInfo
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- CN105545725A CN105545725A CN201610035246.1A CN201610035246A CN105545725A CN 105545725 A CN105545725 A CN 105545725A CN 201610035246 A CN201610035246 A CN 201610035246A CN 105545725 A CN105545725 A CN 105545725A
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- plunger
- groove
- plunger piston
- spiral groove
- right hand
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention provides a plunger piston having the bionic microstructural surface feature and used for a plunger pump and a manufacturing process of the plunger piston, and belongs to the technical field of hydraulic transmission. The plunger piston comprises a levogyration spiral groove and a dextrorotation spiral groove, the levogyration spiral groove and the dextrorotation spiral groove start to be formed from the chamfer position of the end face of the plunger piston and are formed in the 1/3 position of the length of the outer cylindrical face of the plunger piston, and a bionic surface having the bionic microstructural surface feature is formed on the outer cylindrical face of the plunger piston; and the levogyration spiral groove and the dextrorotation spiral groove are communicated with an oil cavity in a cylinder body through an oil groove opening formed in the chamfer position of the end face of the plunger piston, an effective lubrication, cooling and sealing oil film can be formed between the plunger piston and a copper sleeve in the motion process of the plunger piston, and therefore the lubricating property and the frictional feature of a plunger piston pair are improved. According to the plunger piston and the manufacturing process, the bionic microstructural surface feature is machined on the outer cylindrical face of the plunger piston through a lathe turning method, and the beneficial effects of being simple in convenient in machining process, low in cost, concise, practical and the like are achieved.
Description
Technical field:
The invention belongs to hydraulic transmission technology field, be specifically related to a kind of plunger pump plunger and the preparation process thereof with bionical micro-structure surface feature.
Background technique:
In hydraulic transmission field, axial piston pump is widely used because having superior performance.The working principle of axial piston pump be utilize plunger to-and-fro motion in cylinder body to produce volume-variation to carry out oil suction and oil extraction.In plunger pump key building block, the lubrication of plunger-copper sheathing pair, sealing and surface contact situation have important impact to the task performance of plunger pump and working life.Therefore, reasonably design is carried out to plunger-copper sheathing pair and have vital effect to improving plunger pump performance.
Some problems that researcher exists for axial plunger pair have carried out large quantifier elimination.Some improves the contact performance of trunk piston set by the material changing plunger or copper sheathing; Also the lubrication and the friction and wear characteristic that improve trunk piston set by processing bionical micro forming at plunger surface is had.As Chinese patent CN103867432A discloses a kind of high pressure sea water plungers pump plunger friction pair with bionic non-smooth surface, by processing the bionic non-smooth surface of through hole and the formation of pit shape cell cube at trunk piston set friction surface, improve the lubrication property of trunk piston set, bearer properties and friction and wear characteristic.Facts have proved, process biomimetic features by bionic method at body surface, be conducive to improving its surface property.The present invention, by the diamond-type rib list structure of bionical shark placoid scale, processes bionical micro-structure surface feature at plunger surface, reaches and improve the greasy property of trunk piston set and the effect of frictional behavior.Meanwhile, the preparation process of this plunger is determined.
Summary of the invention:
The object of the present invention is to provide a kind of plunger pump plunger and the preparation process thereof with bionical micro-structure surface feature.While guarantee trunk piston set good sealing property, effectively can be improved the greasy property of plungers pump plunger pair, thus reach the fretting wear reduced between plunger and copper sheathing, extend the object in plunger pump working life by this plunger.The required plunger with bionical micro-structure surface feature succinctly, practicably can be processed by this preparation process.The present invention mainly by the diamond-type rib list structure of bionical shark placoid scale, utilizes the method for lathe cutting, processes the bionic surface with bionical micro-structure surface feature at plunger surface.
A kind of plunger pump plunger with bionical micro-structure surface feature provided by the present invention comprises left-turn spiral groove 7 and right hand helix groove 8; Described left-turn spiral groove 7 and described right hand helix groove 8, open from described plunger 4 end chamfer and be arranged on 1/3 length place of described plunger 4 external cylindrical surface; The sectional shape of described left-turn spiral groove 7 and described right hand helix groove 8 is rectangle or semicircle, and its width at plunger surface or diameter are 0.1-0.5mm, and left hand screw angle is β
1, right-hand screw angle is β
2, β
1and β
2span be 20-40 °; Described left-turn spiral groove 7 and described right hand helix groove 8 open from the same starting point of described plunger 4 end face, and the groove starting point of described left-turn spiral groove 7 and described right hand helix groove 8 is evenly distributed on the whole circumferential surface of described plunger 4 end face; Described groove starting point is 8,9 or 10, and the angle α of the horizontal center line of the line in described groove starting point and the described plunger 4 end face center of circle and described plunger 4 end face circle is 45 ° or 40 ° or 36 °.Described left-turn spiral groove 7 and described right hand helix groove 8 form the bionic surface with bionical micro-structure surface feature at 1/3 length place of described plunger 4 external cylindrical surface.
When plunger pump works, described left-turn spiral groove 7 and described right hand helix groove 8 form the inside that the bionic surface with bionical micro-structure surface feature is positioned at described copper sheathing 3 all the time, ensure that trunk piston set has good sealing.Simultaneously, the oil groove mouth that described left-turn spiral groove 7 and described right hand helix groove 8 are offered by described plunger 4 end chamfer place and cylinder body 2 intracavity inter-connection, when described plunger 4 moves back and forth in described cylinder body 2, the oil groove mouth that the high pressure oil of cylinder body 2 inner chamber can be offered by described plunger 4 end chamfer place enters described left-turn spiral groove 7 and described right hand helix groove 8, between plunger-copper sheathing, form effective lubrication, cooling and sealing oil film, thus improve the lubrication property of trunk piston set.
A kind of plunger pump plunger with bionical micro-structure surface feature provided by the present invention is prepared by following preparation process:
(1) according to the size of drawing requirement determination plunger blank, then by triangle clamping chuck plunger blank, the periphery of rough turn plunger blank, the sectional shape according to spiral grooves selects rectangle lathe tool or billmpse tool; Be 0.1-0.5mm according to the groove width of rectangle or semi-circular cross-section or diameter, determine the amount of feed of lathe tool, according to the spiral angle β of spiral grooves
1and β
2be 20-40 °, determine the relation between the feed speed of main shaft and workpiece rotational frequency, then turning left-turn spiral groove 7 and right hand helix groove 8 in plunger periphery circumference, then turning goes out spherical surface; Wherein, the degree of depth of spiral grooves is determined by the lathe tool type of processing groove.
(2) turning carries out Carburization Treatment after completing, and the thickness of carburizing is 0.7-0.9mm; After carburizing, coupled columns fills in row Quenching Treatment, increases the hardness on its surface, and the hardness after quenching is HRC59-64.
(3) after heat treatment, by plain external grinding machine coupled columns beyond the Great Wall disc carry out grinding, grinding allowance is 0.2-03mm, ensures that plunger has good coaxality and circularity, and to control plunger surface roughness Ra be 0.1 μm.
The present invention has following technical characterstic:
1, bionical shagreen is widely used in a lot of field with its superior resistance reducing performance, the present invention is by the diamond-type rib list structure of bionical shark placoid scale, process bionical micro-structure surface at 1/3 length place of plunger external cylindrical surface, ensure that trunk piston set good sealing property.Meanwhile, effective lubrication, cooling and sealing oil film can be formed in the process of plunger reciprocates, thus improve greasy property and the frictional behavior of trunk piston set between plunger-copper sheathing.
2, the present invention processes bionical micro-structure surface feature by the method for lathe cutting at plunger external cylindrical surface, has the advantages such as course of working is simple and convenient, with low cost, brief and practical.Meanwhile, this processing method has higher Modulatory character, can process required bionical micro-structure surface feature according to specific demand at plunger external cylindrical surface.
Accompanying drawing illustrates:
Fig. 1 is the main TV structure schematic diagram of plunger of the present invention;
Fig. 2 is plunger surface of the present invention bionical micro-structure surface feature local I structure for amplifying schematic diagram in Fig. 1;
Fig. 3 is that spiral grooves in the present invention is at 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 representation.
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: right hand helix groove.
Embodiment:
A kind of plunger pump plunger with bionical micro-structure surface feature provided by the present invention, this plunger comprises left-turn spiral groove 7 and right hand helix groove 8; Left-turn spiral groove 7 and right hand helix groove 8, open from plunger 4 end chamfer and be arranged on 1/3 length place of plunger 4 external cylindrical surface; The sectional shape of left-turn spiral groove 7 and right hand helix groove 8 is rectangle or semicircle, and its width at plunger surface or diameter are 0.1-0.5mm, and spiral angle is β
1and β
2, β
1, β
2span be 20-40 °; Described left-turn spiral groove 7 and described right hand helix groove 8 open from the same starting point of described plunger 4 end face, and the groove starting point of described left-turn spiral groove 7 and described right hand helix groove 8 is evenly distributed on the whole circumferential surface of described plunger 4 end face; Described groove starting point is 8,9 or 10, and the angle α of the horizontal center line of the line in described groove starting point and the described plunger 4 end face center of circle and described plunger 4 end face circle is 45 ° or 40 ° or 36 °.Left-turn spiral groove 7 and right hand helix groove 8 form the bionic surface with bionical micro-structure surface feature at 1/3 length place of plunger 4 external cylindrical surface.
As shown in Figure 6, plunger of the present invention is applied to cam-type axial piston pump and comprises main shaft 1, cylinder body 2, copper sheathing 3, plunger 4, piston shoes 5, swash plate 6.Main shaft 1 rotates and drives cylinder body 2 and swash plate 6 to rotate, and plunger 4 is moved back and forth in copper sheathing.In movement process, the bionic surface with bionical micro-structure surface feature that 1/3 length place of plunger 4 external cylindrical surface is arranged, all the time in copper sheathing, ensure that plunger has good sealability.Simultaneously, the oil groove mouth that the high pressure oil of cylinder body 2 inner chamber can be offered by plunger 4 end chamfer place enters left-turn spiral groove 7 and right hand helix groove 8, between plunger-copper sheathing, form effective lubrication, cooling and sealing oil film, thus improve lubrication property and the frictional behavior of trunk piston set.
A kind of preparation process with the plunger pump plunger of bionical micro-structure surface feature provided by the present invention is specific as follows: operation route is: blanking-numerical control lathe (cylindrical turning, rectangle or semi-circular cross-section spiral grooves and spherical surface)-heat treatment (quenching after carbunse)-grinding (cylindrical and spherical surface).
Preparation process's concrete steps are as follows: first, according to the size of drawing requirement determination plunger blank, then by triangle clamping chuck plunger blank, and the periphery of rough turn plunger blank, the sectional shape according to spiral grooves selects rectangle lathe tool or billmpse tool; Be 0.1-0.5mm according to the groove width of rectangle or semi-circular cross-section or diameter, determine the amount of feed of lathe tool, according to the angle beta of spiral grooves
1and β
2be 20-40 °, determine the relation between the feed speed of main shaft and workpiece rotational frequency, then turning left-turn spiral groove 7 and right hand helix groove 8 in plunger periphery circumference, then turning goes out spherical surface; Carry out Carburization Treatment after turning completes, the thickness of carburizing is 0.7-0.9mm; After carburizing, coupled columns fills in row Quenching Treatment, increases the hardness on its surface, and the hardness after quenching is HRC59-64; After heat treatment, by plain external grinding machine coupled columns beyond the Great Wall disc carry out grinding, grinding allowance is 0.2-03mm, ensures that plunger has good coaxality and circularity, and to control plunger surface roughness Ra be 0.1 μm.Wherein, the degree of depth of groove is determined by the lathe tool type of processing groove.
Claims (4)
1. there is a plunger pump plunger for bionical micro-structure surface feature, it is characterized in that this plunger comprises left-turn spiral groove (7) and right hand helix groove (8), described left-turn spiral groove (7) and described right hand helix groove (8) open from described plunger (4) section chamfering and are arranged on 1/3 length place of described plunger (4) external cylindrical surface, and form the bionic surface with bionical micro-structure surface feature at 1/3 length place of described plunger (4) external cylindrical surface, described left-turn spiral groove (7) is connected with oil pocket in cylinder body by the oil groove mouth at described plunger (4) end chamfer place with described right hand helix groove (8), effective lubrication can be formed between plunger-copper sheathing in plunger motion process, cooling and sealing oil film.
2. the plunger pump plunger with bionical micro-structure surface feature according to claim 1, the cross section that it is characterized in that described left-turn spiral groove (7) and described right hand helix groove (8) is rectangle or semicircle, the width of described rectangle or semi-circular cross-section or diameter are 0.1-0.5mm, the spiral angle β respectively of described left-turn spiral groove (7) and described right hand helix groove (8)
1, β
2, described β
1, β
2span be 20-40 °.
3. the plunger pump plunger with bionical micro-structure surface feature according to claim 1, it is characterized in that described left-turn spiral groove (7) and described right hand helix groove (8) open from the same starting point of described plunger (4) end face, and the groove starting point of described left-turn spiral groove (7) and described right hand helix groove (8) is evenly distributed on the whole circumferential surface of described plunger (4) end face; Described groove starting point is 8,9 or 10, and the angle α of the horizontal center line of the line in described groove starting point and described plunger (4) the end face center of circle and described plunger (4) end face circle is 45 ° or 40 ° or 36 °.
4. the preparation process with the plunger pump plunger of bionical micro-structure surface feature according to claim 1, is characterized in that this preparation process is specific as follows:
(1) according to the size of drawing requirement determination plunger blank, then by triangle clamping chuck plunger blank, the periphery of rough turn plunger blank, the sectional shape according to spiral grooves selects rectangle lathe tool or billmpse tool; Be 0.1-0.5mm according to the groove width of rectangle or semi-circular cross-section or diameter, determine the amount of feed of lathe tool, according to the spiral angle β of spiral grooves
1and β
2be 20-40 °, determine the relation between the feed speed of main shaft and workpiece rotational frequency, then turning left-turn spiral groove (7) and right hand helix groove (8) in plunger periphery circumference, then turning goes out spherical surface; Wherein, the degree of depth of spiral grooves is determined by the lathe tool type of processing groove;
(2) turning carries out Carburization Treatment after completing, and the thickness of carburizing is 0.7-0.9mm; After carburizing, coupled columns fills in row Quenching Treatment, increases the hardness on its surface, and the hardness after quenching is HRC59-64;
(3) after heat treatment, by plain external grinding machine coupled columns beyond the Great Wall disc carry out grinding, grinding allowance is 0.2-03mm, ensures that plunger has good coaxality and circularity, and to control plunger surface roughness Ra be 0.1 μm.
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 |
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| 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 true CN105545725A (en) | 2016-05-04 |
| CN105545725B CN105545725B (en) | 2018-08-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109097724A (en) * | 2018-09-18 | 2018-12-28 | 华中农业大学 | The preparation method of biomimetic features is strengthened in a kind of carburizing based on pulsed arc |
| CN111659908A (en) * | 2020-06-19 | 2020-09-15 | 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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| 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 |
| CN109097724A (en) * | 2018-09-18 | 2018-12-28 | 华中农业大学 | The preparation method of biomimetic features is strengthened in a kind of carburizing based on pulsed arc |
| CN111659908A (en) * | 2020-06-19 | 2020-09-15 | 重庆郭氏洪伸科技有限公司 | Turning-based cylindrical surface reticulate pattern machining method and system |
| 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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| CN105545725B (en) | 2018-08-21 |
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