CN106021833A - Method for improving pulling-out force of piston assembly - Google Patents
Method for improving pulling-out force of piston assembly Download PDFInfo
- Publication number
- CN106021833A CN106021833A CN201610615917.1A CN201610615917A CN106021833A CN 106021833 A CN106021833 A CN 106021833A CN 201610615917 A CN201610615917 A CN 201610615917A CN 106021833 A CN106021833 A CN 106021833A
- Authority
- CN
- China
- Prior art keywords
- piston shoes
- out force
- pulling
- plunger assembly
- conical surface
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Abstract
The invention discloses a method for improving pulling-out force of a piston assembly, and relates to the field of machining. The method is suitable for improving the pulling-out force of the piston assembly, and it is guaranteed that the puling-out force meets a specified value. According to the method for improving the pulling-out force of the piston assembly, the type and size of a shell nosing part of a sliding shoe part in the piston assembly are adjusted, so that the pull-out force index of a piston and a sliding shoe in the piston assembly subjected to shell nosing is guaranteed.
Description
Technical field:
The present invention relates to field of machining, a kind of method particularly relating to liftout plunger assembly pulling-out force.
Background technology:
The key component plunger assembly of plunger displacement pump is by after plunger spherical outside surface and the cooperation of piston shoes Internal Spherical Surface, by receiving
Mouth processing, makes piston shoes part generation plastic deformation, wraps plunger spherical outside surface.After plunger assembly closes up, need
Meet pulling-out force and be not more than the requirement of certain setting.General piston shoes part closing in position is the face of cylinder, with post
After plug closes up, the material of deformed area is few, causes pulling-out force to tend not to meet index.
Summary of the invention
The present invention is directed to the deficiency of existing structure, it is provided that a kind of method of liftout plunger assembly pulling-out force, increase
Add the material volume of closing in deformed area, improved plunger assembly and pull force value.
Technical solution of the present invention: a kind of method of liftout plunger assembly pulling-out force, it is characterised in that: by changing
Become pattern and the structure at piston shoes part closing in position, increase the material volume of piston shoes deformed area, liftout plunger group
The method of the pulling-out force of part, specifically comprises the following steps that
(1), after being closed up by the plunger assembly using general structure piston shoes, pulling-out force F is tested1, it is accurate to 1N；
(2) pulling-out force F is calculated1With setting F2Difference F3；
(3) the minimal material volume V needing to increase is calculated1
Formula: V1=F3(N)/200(N/mm3),
Wherein 200N/mm3It it is empirical data.
(4) select the desired value of a group of α, L, D, design the piston shoes of the closing in position band conical surface, soft with drawing
Part is drawn.The conical surface and piston shoes axis angle α=16 °～20 °；Conical surface starting point is near Internal Spherical Surface bottom surface, away from ball
Heart distance L=0.1mm～0.2mm.Circle diameter D=(1.4～1.6) × piston shoes spherical diameter DBall, the conical surface with
Piston shoes cylindrical joint rounding R0.1～R0.2
(5) in mapping software, measure the material volume V of increase part2
(6) V is judged2>V1No？If meeting, producing piston shoes by new construction, and closing up；
(7) if being unsatisfactory for, adjustment parameter alpha, the value of L, D, repetition step (4), (5), (6),
Until meeting V2>V1；
(8) process several testpieces with the piston shoes detail of design of new construction, complete to close up by former method, inspection
Survey pulling-out force, determine final structure.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of liftout plunger assembly pulling-out force；
Fig. 2 is piston shoes part original structure schematic diagrams；
Fig. 3 is piston shoes part new construction schematic diagrams.
Detailed description of the invention
In order to preferably implement the present invention, below in conjunction with Figure of description, the present invention is elaborated, please join
Read Figure of description 1, Fig. 2 and Fig. 3.
(1), after general structure piston shoes being used to see that the plunger assembly of Fig. 2 closes up, pulling-out force F is tested1, accurately
To 1N；
(2) pulling-out force F is calculated1With setting F2Difference F3；
(3) the minimal material volume V needing to increase is calculated1
Formula: V1=F3(N)/200(N/mm3),
Wherein 200N/mm3It it is empirical data.
(4) selecting the desired value of a group of α, L, D, the piston shoes of the design band closing in position band conical surface, with drawing
Software is drawn, and sees Fig. 3.The conical surface and piston shoes axis angle α=16 °～20 °；Conical surface starting point on the left of the centre of sphere,
Away from centre of sphere distance L=0.1mm～0.2mm.Circle diameter D=(1.4～1.6) × piston shoes spherical diameter DBall.Cone
Face and piston shoes cylindrical joint rounding R0.1～R0.2.
(5) in mapping software, measure the material volume V of increase part2。
(6) V is judged2>V1No？If meeting, producing piston shoes by new construction, and closing up.
(7) if being unsatisfactory for, adjustment parameter alpha, the value of L, D, repetition step (4), (5), (6),
Until meeting V2>V1。
(8) process several testpieces with the piston shoes detail of design of new construction, complete to close up by former method.Detection
Pulling-out force, determines final structure.
Embodiment
With a DBallForOutside diameter d isAs a example by material is the piston shoes of QAl10-4-4,
This plunger assembly pulling-out force F2=1000N, elaboration specific implementation method:
(1), after original structure piston shoes being used to see that the plunger assembly of Fig. 2 closes up, pulling-out force F is tested1=1000N；
(2) pulling-out force F is calculated1With setting F2Difference F3；
F3=F2-F1=1000-600=400N
(3) the minimal material volume V1 needing to increase is calculated.
Formula: V1=F3(N)/200(N/mm3)=400/200=2mm3,
Wherein 200N/mm3It it is empirical data.
(4) selecting the desired value of a group of α, L, D, the piston shoes of the design band closing in position band conical surface, with drawing
Software is drawn, and sees Fig. 3.The conical surface and piston shoes axis angle α=16 °；Conical surface starting point is on the left of the centre of sphere, away from ball
Heart distance L=0.1mm.Circle diameter D=1.45 × DBall=4.93mm.The conical surface and piston shoes cylindrical joint rounding
R0.1。
(5) in mapping software, measure the material volume V of increase part2=1.4471mm3。
(6) V is judged2≯V1, it is unsatisfactory for requirement.
(7) desired value of Selecting All Parameters α, L, D again, α=16 °, L=0.1mm, D=1.55 × DBall=5.27mm, the conical surface and piston shoes cylindrical joint rounding R0.1.
(8) in mapping software, measure the material volume V of increase part2'=3.3426mm3。
(9) V is judged2＞ V1, parameter is suitable.
(10) process several testpieces with the piston shoes detail of design of new construction, complete to close up by former method.
Detection pulling-out force, determines final structure.
Claims (2)
1. the method for a liftout plunger assembly pulling-out force, it is characterised in that: close up by changing piston shoes part
The pattern at position and structure, increase the material volume of piston shoes deformed area, the side of the pulling-out force of liftout plunger assembly
Method；Specifically comprise the following steps that
(1), after being closed up by the plunger assembly using general structure piston shoes, pulling-out force F is tested1, it is accurate to 1N；
(2) pulling-out force F is calculated1With setting F2Difference F3；
(3) the minimal material volume V needing to increase is calculated1
Formula: V1=F3(N)/200(N/mm3),
(4) select the desired value of a group of α, L, D, the piston shoes of the design closing in position band conical surface, use mapping software
Draw, the conical surface and piston shoes axis angle α=16 °～20 °；Conical surface starting point is near Internal Spherical Surface bottom surface, away from the centre of sphere
Distance L=0.1mm～0.2mm, circle diameter D=(1.4～1.6) × piston shoes spherical diameter DBall；The conical surface and cunning
Boots cylindrical joint rounding R0.1～R0.2
(5) in mapping software, measure the material volume V of increase part2
(6) V is judged2>V1No？If meeting, producing piston shoes by new construction, and closing up
(7) if being unsatisfactory for, adjustment parameter alpha, the value of L, D, repetition step (4), (5), (6), directly
To meeting V2>V1
(8) process several testpieces with the piston shoes detail of design of new construction, complete to close up by former method, detection
Pulling-out force, determines final structure.
The method of a kind of liftout plunger assembly pulling-out force the most as claimed in claim 1, it is characterised in that: institute
In processing plunger assembly, piston shoes part material is aluminium bronze or tin bronze, and piston shoes Internal Spherical Surface diameter is less than Φ 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610615917.1A CN106021833A (en) | 2016-07-29 | 2016-07-29 | Method for improving pulling-out force of piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610615917.1A CN106021833A (en) | 2016-07-29 | 2016-07-29 | Method for improving pulling-out force of piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106021833A true CN106021833A (en) | 2016-10-12 |
Family
ID=57115337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610615917.1A Pending CN106021833A (en) | 2016-07-29 | 2016-07-29 | Method for improving pulling-out force of piston assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106021833A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019027A (en) * | 2014-06-30 | 2014-09-03 | 徐州徐工液压件有限公司 | Plunger pump as well as plunger motor and nosing-free reverse-package plunger piston shoe assembly thereof |
-
2016
- 2016-07-29 CN CN201610615917.1A patent/CN106021833A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019027A (en) * | 2014-06-30 | 2014-09-03 | 徐州徐工液压件有限公司 | Plunger pump as well as plunger motor and nosing-free reverse-package plunger piston shoe assembly thereof |
Non-Patent Citations (3)
| Title |
|---|
| SHUO LIN 等: "Tribo-dynamic Model of Slipper Bearings", 《APPLIED MATHEMATICAL MODELING》 * |
| 徐绳武: "《柱塞式液压泵》", 31 July 1985, 机械工业出版社 * |
| 王文全 等: "柱塞泵组合件强度稳定性试验研究", 《计量与测试技术》 * |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161012 |