CN106500904B - A kind of air-flow probe manufacturing method based on increasing material manufacturing - Google Patents
A kind of air-flow probe manufacturing method based on increasing material manufacturing Download PDFInfo
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- CN106500904B CN106500904B CN201610878530.5A CN201610878530A CN106500904B CN 106500904 B CN106500904 B CN 106500904B CN 201610878530 A CN201610878530 A CN 201610878530A CN 106500904 B CN106500904 B CN 106500904B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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Abstract
The present invention is small for air-flow probe size, the low feature of intensity requirement, and combine the convenience advantage of increasing material manufacturing labyrinth, disclose a kind of air-flow probe manufacturing method based on increasing material manufacturing, the air-flow probe includes probe precursor, body and airflow duct three parts after probe, wherein probe precursor uses increasing material manufacturing method, then body and airflow duct then select corresponding tubing according to actual needs, it can effectively avoid the precision welding technical problem in conventional air probe machine-building, reduce the difficulty of air-flow probe processing and manufacturing, reduce the cost of manufacture of air-flow probe, manufacturing cost and period are significantly reduced simultaneously, it is convenient to be applied to various forms, air-flow probe manufacturing of various shapes.
Description
Technical field
The present invention relates to fluid measurement technical fields, are more particularly to a kind of air-flow probe manufacturing side based on increasing material manufacturing
Method.
Background technique
Air-flow probe is widely used in field of fluid measurement, according to the difference of probe geometries, can get measured position not
Same parameter, as Pitot tube can measure local incoming flow stagnation pressure, static pressure and velocity amplitude；Five-hole probe then can get local incoming flow stagnation pressure,
Static pressure and speed three-component, about ± 40 ° of speed of incoming flow orientation measurement range；The equally available local incoming flow stagnation pressure of seven-hole probe,
Static pressure and speed three-component, but reachable ± 70 ° of speed of incoming flow orientation measurement range.Generally speaking, the relative complex probe of structure
It can get larger range of incoming flow parameter.Meanwhile in the design of air-flow probe, it is often desired to which probe size minimizes, to reduce
Interference to incoming flow flowing improves measurement accuracy.The seven-hole probe conical probe diameter being widely used at present is in 6mm or so.
The manufacturing method of conventional air probe (such as seven-hole probe) be based on machining, Major Difficulties be conical probe,
The guarantee of welding precision between airflow duct and probe body.Welding precision directly affects the measurement accuracy in air-flow probe later period
And measurement range, therefore the case where the machine-building of air-flow probe usually fails.That which results in air-flow probe manufacturings is difficult,
At high cost and supplier is few.
Summary of the invention
In view of the shortcomings of the prior art and insufficient, small for air-flow probe size, intensity requirement is low feature, purport of the present invention
A kind of air-flow probe manufacturing method based on increasing material manufacturing is being provided, can effectively avoid precision welding technical problem, is reducing air-flow
The difficulty of probe processing and manufacturing, reduces the cost of manufacture of air-flow probe, while manufacturing cost and period is greatly reduced, and facilitates application
In various forms, air-flow probe manufacturing of various shapes.
The technical solution that the present invention is taken by solution its technical problem are as follows:
A kind of air-flow probe manufacturing method based on increasing material manufacturing, the air-flow probe includes body after probe precursor, probe
And airflow duct, wherein the probe precursor uses increasing material manufacturing method, and body and airflow duct are according to practical need after the probe
It asks and selects corresponding tubing, the purpose is to can more reduce cost, while air-flow probe integral strength can be improved.Its feature exists
In the air-flow probe manufacturing method includes the following steps:
SS1. probe precursor models
The probe precursor, including body front end, body ends, airflow hole and mounting hole, wherein
The body front end and body ends appearance profile size are determining according to use demand,
The airflow hole runs through the probe precursor along its length, keeps continual curvature, airflow hole through path
It is several to be determined by air-flow probe geometries,
The mounting hole is located at the body ends, for connecting body after the probe,
According to determining design size to the probe precursor 3D modeling, respectively to the body front end, body ends, gas
Discharge orifice and mounting hole carry out 3D modeling, and export 3D printing drawing formatted file.
In this step, airflow hole is to export stream pressure continuously through the purpose that path keeps continual curvature, is increased simultaneously
Manufacture process can support auxiliary material by residual fraction in airflow hole, and airflow hole helps to support auxiliary through path holding continual curvature
The cleaning of material.
SS2. increasing material manufacturing and support auxiliary material cleaning
The particularity of the probe precursor structure is that probe precursor is slender body, and internal through there is airflow hole,
And increases material manufacturing technology can not directly manufacture inside containing porose structural body, internal gas flow hole needs to use in increasing material manufacturing thus
Support auxiliary material filling, wherein material of main part can use ABS resin (Acrylonitrile Butadiene Styrene), support auxiliary
Material selects water-soluble high-molecular material, such as polyvinyl alcohol (PVA, Polyvinyl alcohol).
The compiling of increasing material manufacturing program is carried out according to the probe precursor 3D modeling data and selected materials, completes increasing material manufacturing
After process, it is filled with support auxiliary material in probe precursor airflow hole, probe precursor need to be immersed in alkaline solution, which is benefit
Be dissolved in alkaline solution with support auxiliary material, and the material of main part then feature immiscible with alkaline solution, will support auxiliary material softening, into one
Step using be less than air-flow bore dia fine wire the support auxiliary material of dissolution is gradually removed, until airflow hole completely through.
SS3. air-flow probe assembles
Airflow duct and probe precursor are tightly connected first, and make airflow hole continuous transition, being used for will be before the probe
Pressure export in body in airflow hole,
Secondly body after probe and probe precursor are passed through into mounting hole assembly connection.
Further, the air-flow probe manufacturing method still further comprises following steps:
SS4. air-flow probe is demarcated
Air-flow probe is installed on caliberating device, changes and comes flow angle and speed of incoming flow, the airflow duct is measured and draws
Pressure, and then calibration matrix is calculated by calibration algorithm.
Preferably, in step SS1, the tip designs of the airflow hole are stepped hole, and the airflow duct is made to protrude into air-flow
After bore end, the probe precursor airflow hole and the airflow duct inner hole can continuous transitions.
Further, the stepped hole is greater than in body front end side close to its internal diameter of the side of body ends
Diameter.
Preferably, the tip designs of the airflow hole are projecting terminal, and projecting terminal outer diameter is slightly larger than the airflow duct
Internal diameter guarantees leakproofness using elasticity tension when connecting the airflow duct with projecting terminal.
Preferably, there is certain angle between the body front end and body ends.
Preferably, the probe precursor is provided at least one airflow hole arranged along its length.
Preferably, probe precursor is impregnated using sodium bicarbonate solution, to remove the support auxiliary material remained in airflow hole.
Preferably, when airflow duct and probe precursor are tightly connected, airflow duct is respectively protruding into each airflow hole first,
And airflow duct and airflow hole are fixed and are sealed using epoxy adhesive.
Preferably, body and probe precursor pass through mounting hole using pin assembly connection after the probe.
Preferably, using photosensitive resin increasing material manufacturing probe precursor.
As seen through the above technical solutions, compared with the existing technology, the present invention is for air-flow probe size is small, intensity requirement
Low feature, and the convenience advantage of increasing material manufacturing labyrinth is combined, propose the air-flow probe manufacturing side based on increasing material manufacturing
Method can effectively avoid precision welding technical problem, reduce the difficulty of air-flow probe processing and manufacturing, reduce being fabricated to for air-flow probe
This, while manufacturing cost and period is greatly reduced, it is convenient to be applied to various forms, air-flow probe manufacturing of various shapes.
Detailed description of the invention
Fig. 1 air-flow probe structure schematic diagram；
One schematic diagram of Fig. 2 probe precursor structure；
Two schematic diagram of Fig. 3 probe precursor structure.
Specific embodiment
It is right below in conjunction with specific embodiment, and referring to attached drawing for the object of the invention, technical solution is more clearly understood
The present invention is further described.It should be noted that as described below is only presently preferred embodiments of the present invention, therefore do not limit
Determine protection scope of the present invention.
Example air-flow probe geometries are seven-hole probe, and shape is broken line type, as shown in Figure 1, before air-flow probe includes probe
20 ° of body angle after 3 three parts of body after body 1, airflow duct 2 and probe, probe precursor and probe.Wherein probe precursor is using increasing material
Manufacturing method, material are photosensitive resin, and body 3 selects outer diameter 12mm, internal diameter 10mm tubing after probe, and airflow duct 2 selects outer diameter
1mm, internal diameter 0.8mm metal capillary tubes.Air-flow probe manufacturing method includes probe precursor modeling, increasing material manufacturing and support auxiliary material
Cleaning, the assembly of air-flow probe, air-flow probe demarcate four steps.
1. probe precursor models
Probe precursor 1, including body front end 1.1, body ends 1.2, airflow hole 1.3,1.4 4 part of mounting hole are such as schemed
2, shown in 3,1.1 diameter 6mm of body front end, 1.2 diameter 10mm of body ends are simultaneously assembled with body 3 after probe by mounting hole 1.4
Fixed, penetration probe precursor 1,1.3 tip designs of airflow hole are stepped hole, internal diameter difference to seven airflow holes 1.3 along its length
For 0.8mm and 1mm, after airflow duct 2 protrudes into 1.3 end of airflow hole, probe precursor airflow hole 1.3 and 2 inner hole of airflow duct
It can continuous transition.By the above design size in d solid modeling software CATIA to body front end 1.1, body ends 1.2,
Airflow hole 1.3, the modeling of 1.4 4 part entity of mounting hole, and export 3D printing drawing formatted file.
2. increasing material manufacturing and support auxiliary material cleaning
Increasing material manufacturing process is completed according to 3D printing drawing, support auxiliary material is residual during the increasing material manufacturing of probe precursor 1
It stays in airflow hole 1.3, impregnates probe precursor 1 using sodium bicarbonate solution, while will dissolve using internal diameter 0.4mm fine wire
Support auxiliary material gradually remove, until airflow hole 1.3 completely through.
3. air-flow probe assembles
The assembly of air-flow probe includes the assembly connection of 2 three parts of body 3 and airflow duct after probe precursor 1, probe, first will
Seven airflow ducts 2 are respectively protruding into seven airflow holes 1.3 of probe precursor 1, and are led using epoxy adhesive to air-flow
The connection of pipe 2 and airflow hole 1.3 is fixed and seals, and secondly adopts body 3 after probe by mounting hole 1.4 with probe precursor 1
With pin assembly connection.
4. air-flow probe is demarcated
The calibration of air-flow probe is consistent with tradition machinery manufacture air-flow probe scaling method, i.e., air-flow probe is installed on calibration
Device changes angle and speed of incoming flow, measures the pressure that the airflow duct is drawn, and then calculate calibration square by calibration algorithm
Battle array.
Through the foregoing embodiment, the purpose of the present invention is completely effectively realized.Person skilled in art is understood that
The foregoing is merely one embodiment of the present of invention, are not intended to limit the invention, all within thinking and principle of the invention,
Any modification, equivalent substitution, improvement and etc. done, should be included within the scope of the present invention.
Claims (11)
1. a kind of air-flow probe manufacturing method based on increasing material manufacturing, the air-flow probe include after probe precursor, probe body and
Airflow duct, wherein the probe precursor uses increasing material manufacturing method, and body and airflow duct be according to actual needs after the probe
Select corresponding tubing, which is characterized in that the air-flow probe manufacturing method includes the following steps:
SS1. probe precursor models
The probe precursor, including body front end, body ends, airflow hole and mounting hole, wherein
The body front end and body ends appearance profile size are determining according to use demand,
The airflow hole runs through the probe precursor along its length, continual curvature is kept through path, to guarantee air-flow pressure
Power continuously exports, while facilitating the cleaning that auxiliary material is supported in subsequent step, and airflow hole number is determined by air-flow probe geometries,
The mounting hole is located at the body ends, for connecting body after the probe,
3D modeling is carried out to the probe precursor according to determining design size, respectively to the body front end, body ends, gas
Discharge orifice and mounting hole carry out 3D modeling；
SS2. increasing material manufacturing and support auxiliary material cleaning
According to the probe precursor 3D modeling data, the increasing material of the probe precursor main body is carried out using material of main part ABS resin
Manufacture is filled the airflow hole using support auxiliary material polyvinyl alcohol, after completing increasing material manufacturing process, is filled in probe precursor airflow hole
Support auxiliary material is expired, probe precursor need to be immersed in alkaline solution, it is therefore an objective to be dissolved in alkaline solution using support auxiliary material, and lead
The body material then feature immiscible with alkaline solution, will support auxiliary material softening, further using the thin gold for being less than air-flow bore dia
Belong to silk the support auxiliary material of dissolution is gradually removed, until airflow hole completely through；
SS3. air-flow probe assembles
Airflow duct and probe precursor are tightly connected first, and make airflow hole continuous transition, being used for will be in the probe precursor
Pressure export in airflow hole,
Secondly body after probe and probe precursor are passed through into mounting hole assembly connection.
2. the air-flow probe manufacturing method according to claim 1 based on increasing material manufacturing, which is characterized in that the air-flow is visited
Needle production method still further comprises following steps:
SS4. air-flow probe is demarcated
Air-flow probe is installed on caliberating device, changes and comes flow angle and speed of incoming flow, measures the pressure that the airflow duct is drawn
Power, and then calibration matrix is calculated by calibration algorithm.
3. the air-flow probe manufacturing method according to claim 1 based on increasing material manufacturing, which is characterized in that the airflow hole
Tip designs be stepped hole, after so that the airflow duct is protruded into air-flow bore end, the probe precursor airflow hole and the gas
Conductance pipe orifice can continuous transition.
4. the air-flow probe manufacturing method according to claim 3 based on increasing material manufacturing, which is characterized in that the stepped hole
It is greater than the internal diameter close to body front end side close to its internal diameter of the side of body ends.
5. the air-flow probe manufacturing method according to claim 1 based on increasing material manufacturing, which is characterized in that the airflow hole
Tip designs be projecting terminal, projecting terminal outer diameter be slightly larger than the airflow duct internal diameter, make the airflow duct and stretch out
Guarantee leakproofness using elasticity tension when terminal connects.
6. the air-flow probe manufacturing method according to claim 1 based on increasing material manufacturing, which is characterized in that before the main body
There is certain angle between end and body ends.
7. the air-flow probe manufacturing method according to claim 1 based on increasing material manufacturing, which is characterized in that before the probe
Body is provided at least one airflow hole arranged along its length.
8. the air-flow probe manufacturing method according to claim 1 based on increasing material manufacturing, which is characterized in that use bicarbonate
Sodium solution impregnates probe precursor, to remove the support auxiliary material remained in airflow hole.
9. the air-flow probe manufacturing method according to claim 1 based on increasing material manufacturing, which is characterized in that airflow duct with
When probe precursor is tightly connected, airflow duct is respectively protruding into each airflow hole first, and using epoxy adhesive to gas
Conductance pipe and airflow hole are fixed and seal.
10. the air-flow probe manufacturing method according to claim 1 based on increasing material manufacturing, which is characterized in that the probe
Body and probe precursor pass through mounting hole using pin assembly connection afterwards.
11. the air-flow probe manufacturing method according to claim 1 based on increasing material manufacturing, which is characterized in that using photosensitive
Resin increasing material manufacturing probe precursor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610878530.5A CN106500904B (en) | 2016-10-08 | 2016-10-08 | A kind of air-flow probe manufacturing method based on increasing material manufacturing |
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| CN201610878530.5A CN106500904B (en) | 2016-10-08 | 2016-10-08 | A kind of air-flow probe manufacturing method based on increasing material manufacturing |
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| CN106500904B true CN106500904B (en) | 2019-02-15 |
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| CN108593964B (en) * | 2018-03-22 | 2020-04-21 | 中国科学院工程热物理研究所 | Calibration method of seven-hole airflow probe |
| CN112033660B (en) * | 2020-09-08 | 2021-05-11 | 四川大学 | Stress test analysis method for generator anti-corona system |
| CN114472920B (en) * | 2021-12-31 | 2024-02-02 | 广东中科半导体微纳制造技术研究院 | Processing method of probe for probe card |
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| WO2015119792A1 (en) * | 2014-02-05 | 2015-08-13 | United Technologies Corporation | Integral instrumentation in additively manufactured components of gas turbine engines |
| EP3076185A1 (en) * | 2015-04-02 | 2016-10-05 | Rosemount Aerospace Inc. | Corrosion-resistant heated air data probe |
| CN105987765A (en) * | 2015-03-23 | 2016-10-05 | 罗斯蒙特航天公司 | Air data probes |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US9297714B2 (en) * | 2013-03-05 | 2016-03-29 | Rosemount Aerospace Inc. | Air data probes |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015119792A1 (en) * | 2014-02-05 | 2015-08-13 | United Technologies Corporation | Integral instrumentation in additively manufactured components of gas turbine engines |
| CN105987765A (en) * | 2015-03-23 | 2016-10-05 | 罗斯蒙特航天公司 | Air data probes |
| EP3076185A1 (en) * | 2015-04-02 | 2016-10-05 | Rosemount Aerospace Inc. | Corrosion-resistant heated air data probe |
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