CN203926207U - A kind of piston assembly with surface micro-moulding structure - Google Patents
A kind of piston assembly with surface micro-moulding structure Download PDFInfo
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- CN203926207U CN203926207U CN201420332277.XU CN201420332277U CN203926207U CN 203926207 U CN203926207 U CN 203926207U CN 201420332277 U CN201420332277 U CN 201420332277U CN 203926207 U CN203926207 U CN 203926207U
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Abstract
The utility model relates to a kind of piston assembly with surface micro-moulding structure, comprise the piston assembly being formed by piston rod and piston, described piston and piston rod at right angle setting, be processed with some micron order pits on the cylndrical surface of described piston, the distance between adjacent pit equates.The utility model by offering micron order pit on piston, can be as micro-storage pool of lubricant oil or the nail collection slot of abrasive dust, for boundary lubrication provides lubricated or provides lubricated for the friction surface just starting, hold because the abrasive dust that boundary lubrication or dry friction produce, thereby reduce wear, increase the service life.
Description
Technical field
The utility model relates to oil hydraulic cylinder technical field, relates in particular to a kind of for the piston rod on oil hydraulic cylinder.
Background technique
Oil hydraulic cylinder by hydraulic energy change mechanical energy into, the do straight reciprocating motion hydraulic actuator of (or oscillating motion).Its simple in structure, reliable operation.While realizing to-and-fro motion with it, can remove speed reducer from, and there is no drive gap, motion steadily, is therefore used widely in the hydraulic system of various machineries.The pressure reduction on oil hydraulic cylinder ouput force and piston effective area and both sides thereof is directly proportional; Oil hydraulic cylinder is comprised of cylinder barrel and cylinder cap, piston and piston rod, seal arrangement, damping device and venting gas appliance substantially.
Surface micro-moulding technology is to process at surface of friction pair the microscopic appearance that rule distributes, and to improve friction and wear behavior, this technology starts from the people's such as Hamilton in the later stage sixties 20th century research.But at present, also technique is not applied on piston, in order to form hydrodynamic lubrication, improves lubrication effect.
Model utility content
The purpose of this utility model is in order to overcome the deficiencies in the prior art, and a kind of piston assembly with surface micro-moulding structure is provided, and in order to form dynamic pressure, supports, and realizes texturing.
The utility model is to be achieved through the following technical solutions:
With a piston assembly for surface micro-moulding structure, comprise the piston assembly being formed by piston rod and piston, described piston and piston rod at right angle setting, be processed with some micron order pits on the cylndrical surface of described piston, and the distance between adjacent pit equates.
As optimal technical scheme of the present utility model, described pit is cylindrical or conical or hemisphere.
As optimal technical scheme of the present utility model, the diameter D of described pit is 50 μ m, and height H is 30 μ m.
Compared with prior art, the beneficial effects of the utility model are: the utility model by offering micron order pit on piston, can be as micro-storage pool of lubricant oil or the nail collection slot of abrasive dust, for boundary lubrication provides lubricated or provides lubricated for the friction surface just starting, hold because the abrasive dust that boundary lubrication or dry friction produce, thereby reduce wear, increase the service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is embodiment one pit schematic diagram;
Fig. 3 is embodiment two pit schematic diagram;
Fig. 4 is embodiment three pit schematic diagram.
In figure: 1-piston rod; 2-piston; 3-pit.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 1 is structural representation of the present utility model.
Described a kind of piston assembly with surface micro-moulding structure, comprise the piston assembly being formed by piston rod 1 and piston 2, described piston 2 and piston rod 1 at right angle setting, on the cylndrical surface of described piston 2, be processed with some micron order pits 3, can be as micro-storage pool of lubricant oil or the nail collection slot of abrasive dust, for boundary lubrication provides, lubricate or for the friction surface just starting provides lubricated, hold because the abrasive dust that boundary lubrication or dry friction produce.Distance between adjacent pit 3 equates.The geometric parameter of pit 3 is important to its performance impact, and the geometric parameter of micro forming mainly contains the geometrical shape of micro asperities and the distribution of micro asperities, and its frictional force, bearing capacity, antiwear property are had to very large impact.In processing micro forming, adopt laser surface micro-moulding technology, the speed of manufacturing processing micro forming is fast, environmentally safe and the good control ability to the shape and size of micro forming.
Embodiment one:
Refer to Fig. 2, described pit 3 is cylindrical, and the diameter D of described cylindrical pit 3 is 50 μ m, and height H is 30 μ m.
Embodiment two:
Refer to Fig. 3, described pit 3 is conical, and the diameter D of described conic shaped 3 is 50 μ m, and height H is 30 μ m.
Embodiment three:
Refer to Fig. 4, described pit 3 is hemisphere, and the diameter D of described hemispherical dimples 3 is 50 μ m, and height H is 30 μ m.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. the piston assembly with surface micro-moulding structure, comprise the piston assembly being formed by piston rod (1) and piston (2), described piston (2) and piston rod (1) at right angle setting, it is characterized in that: on the cylndrical surface of described piston (2), be processed with some micron order pits (3), the distance between adjacent pit (3) equates.
2. a kind of piston assembly with surface micro-moulding structure according to claim 1, is characterized in that: described pit (3) is cylindrical or conical or hemisphere.
3. a kind of piston assembly with surface micro-moulding structure according to claim 2, is characterized in that: the diameter D of described pit (3) is 50 μ m, and height H is 30 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332277.XU CN203926207U (en) | 2014-06-21 | 2014-06-21 | A kind of piston assembly with surface micro-moulding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332277.XU CN203926207U (en) | 2014-06-21 | 2014-06-21 | A kind of piston assembly with surface micro-moulding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926207U true CN203926207U (en) | 2014-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420332277.XU Expired - Fee Related CN203926207U (en) | 2014-06-21 | 2014-06-21 | A kind of piston assembly with surface micro-moulding structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN203926207U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539334A (en) * | 2020-10-27 | 2021-03-23 | 清华大学 | Surface micro-concave texture with dip angle |
| CN114320652A (en) * | 2022-03-03 | 2022-04-12 | 潍柴动力股份有限公司 | Piston and design method of piston |
-
2014
- 2014-06-21 CN CN201420332277.XU patent/CN203926207U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539334A (en) * | 2020-10-27 | 2021-03-23 | 清华大学 | Surface micro-concave texture with dip angle |
| CN114320652A (en) * | 2022-03-03 | 2022-04-12 | 潍柴动力股份有限公司 | Piston and design method of piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20160621 |