CN115178625A - Method for manufacturing guide pipe sample - Google Patents
Method for manufacturing guide pipe sample Download PDFInfo
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- CN115178625A CN115178625A CN202210804816.4A CN202210804816A CN115178625A CN 115178625 A CN115178625 A CN 115178625A CN 202210804816 A CN202210804816 A CN 202210804816A CN 115178625 A CN115178625 A CN 115178625A
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- catheter
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- 238000000034 method Methods 0.000 title claims abstract description 74
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 64
- 238000005452 bending Methods 0.000 claims abstract description 26
- 239000007787 solid Substances 0.000 claims abstract description 17
- 239000000654 additive Substances 0.000 claims abstract description 14
- 230000000996 additive effect Effects 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 9
- 238000009966 trimming Methods 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000004626 polylactic acid Substances 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 238000013386 optimize process Methods 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
- 238000005070 sampling Methods 0.000 abstract description 12
- 238000000151 deposition Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 environmental Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012384 transportation and delivery Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a method for manufacturing a conduit sample, which comprises the following steps: creating a three-dimensional model of the catheter; constructing a solid process model on the basis of the three-dimensional model of the conduit; manufacturing an entity in an additive mode on the basis of the entity process model; selecting a sample tube with a corresponding size to bend along the center line of the solid by taking the qualified solid as a basis to obtain an initial shape real sample; measuring the prototype by using a measuring device, comparing the measured data with the entity process model, and manually correcting to be qualified to obtain a conduit prototype based on the entity process model; and manually bending and forming the conduit blank by taking the conduit full sample as reference, checking by using a special tool manufactured according to the three-dimensional model of the conduit, analyzing and searching reasons if the two dimensions are not coordinated, and repeating the steps until qualified parts meeting the process requirements or technical requirements are formed by manually bending and forming the conduit full sample. The invention greatly shortens the production period, saves the time for preparing the real sample and improves the sampling precision.
Description
Technical Field
The invention belongs to the field of aviation manufacturing, and particularly relates to manufacturing of an aviation metal conduit sample, which is particularly suitable for manufacturing of a metal conduit which is based on a model and cannot be subjected to numerical control bending forming.
Background
Catheters are important parts of aircraft and engines, and function and importance are similar to human blood vessels. Due to the complexity of the aircraft structure, many conduits for hydraulic, fuel, environmental, oxygen, etc. systems in the engine and aircraft interior are complex in layout, shape and orientation. Although digitalization in the design stage is realized at present, a large number of three-dimensional design technologies are adopted, and full-digital geometric information transmission in the manufacturing process is basically realized, compared with the traditional mode of taking a real sample on a machine after the assembly of an airplane, and the manufacture of a guide pipe formed by bending according to the real sample is greatly improved, a certain amount of guide pipes still exist, because the clamping distance of a numerical control bending process mould cannot be met by two adjacent bent middle straight-line sections and end processing straight-line sections of the guide pipe, or the numerical control bending process is inconvenient to replace the mould when the same guide pipe has a plurality of bends and the bending radius is different, or the guide pipe and a numerical control interference pipe bender in the numerical control bending process cannot be directly manufactured by digital processing.
Taking an airplane conduit as an example, the traditional conduit manufacturing usually adopts a mode of 'sampling before production', the mutual positions of a sampled conduit sample, surrounding parts, finished parts, accessories and a fixed support are coordinated on an airplane, the positions of related system conduits and cables in an area are coordinated, workers usually select small-caliber aluminum pipes with the diameter of phi 6 or phi 8mm and the like to bend along the central line of the conduit trend, the small-caliber aluminum pipes are repeatedly compared, tested and corrected on site to prepare an initial-shaped sample, the trend and the gap of the initial-shaped sample are identified under the condition that other system conduits, cables, finished parts, accessories and the like which are mutually related with the sample are complete, the initial-shaped sample is continuously corrected and re-taken until the trial assembly is qualified, and the sampling work is completed. Therefore, the traditional sampling work needs to be carried out on the airplane, a lot of preparation work is carried out, manual operation is completely relied on, the workload of multiple installation and verification is large, the period is long, the cost is high, the production efficiency and the manufacturing precision are low, the production management of the guide pipe is greatly inconvenient due to the existence of the sampling link, and the development progress of the airplane is passively elongated.
Although the technical improvement and upgrading of the numerical control pipe bender or the purchase of a numerical control pipe bender with higher processing capability is a way, the complexity of the guide pipe still has the possibility that machine tool equipment cannot meet the use requirement, the number of the guide pipes which cannot be directly bent in a numerical control mode and cannot be designed and optimized is not large, and the cost of adopting the method is abnormally high. Therefore, the manual pipe bending mode adopted for the conduit which cannot be bent and formed in a numerical control mode is reasonable, and therefore the optimization of the conduit sampling is important.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for manufacturing a guide pipe full sample so as to solve the problem of low processing efficiency of chamfering of a side wall orifice of a deep-cavity part.
The technical scheme of the invention is as follows:
a method of manufacturing a catheter sample, comprising the steps of:
and 7, manually bending and forming the conduit blank by taking the conduit full sample as a reference, checking by using a special tool manufactured according to the three-dimensional model of the conduit, analyzing and searching reasons if the conduit blank is not coordinated, and repeating the steps 1 to 6 until qualified parts are manually bent and formed according to the conduit full sample.
Further, the construction of the solid process model in the step 2 includes the process supplement design of the part geometry.
Further, the process complement design includes forming allowance and process filling for the part geometry.
Further, the manufacturing of the entity in the step 3 includes adjusting the placing position of the entity process model in the slicing processing software, setting the manufacturing speed, the layer height, the filling density, the temperature and other process parameters, selecting a proper adhesion platform mode and a proper support type, setting the additive manufacturing material type and the attribute, programming a numerical control program, manufacturing in a direct energy deposition or powder bed melting mode, and processing the entity with the appearance characteristics of the entity process model.
Further, the additive manufacturing material is polylactic acid (PLA).
Furthermore, the additive manufacturing temperature is 170-230 ℃, and the process parameter layer height is set to be half of the diameter of the nozzle.
Furthermore, in the step 5, an aluminum tube with the diameter of 6 multiplied by 1 or 8 multiplied by 1mm is selected as the sample tube.
Further, the measuring device in step 6 is a laser measuring machine.
Further, step 7 includes trimming the allowance after the pipe blank is bent and formed and the bending trend is corrected, wherein the trimming allowance includes removing the forming allowance, filling and opening.
The invention has the beneficial effects that:
1. the problems that the clamping distance of a die in a numerical control bending process cannot be met due to two adjacent bent middle straight line sections and an end processing straight line section of a guide pipe, or the die cannot be conveniently replaced in the numerical control bending process due to the fact that a plurality of guide pipes are bent and the bending radii are different, or the guide pipes and a numerical control pipe bender are interfered in the numerical control bending process, and the like, are solved;
2. the problems of time consumption, large workload and high cost of repeatedly sampling the catheter on site are solved;
3. the problem of low manufacturing precision caused by the fact that the traditional catheter sampling completely depends on manual control of the direction and the gap of the catheter is solved.
4. The production period is greatly shortened, the time for preparing the real sample is saved, and the sampling precision is improved.
Drawings
FIG. 1 is a flow chart of a method of manufacturing a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a three-dimensional model of a catheter in accordance with a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram of a physical process model according to a preferred embodiment of the present invention;
FIG. 4 is a schematic view of an additive manufacturing entity in a preferred embodiment of the invention;
FIG. 5 isbase:Sub>A cross-sectional view taken along A-A of FIG. 4;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;
FIG. 7 is an enlarged view of a portion C of FIG. 5;
FIG. 8 is a schematic illustration of the slicing process in a preferred embodiment of the present invention;
FIG. 9 is a schematic view of a nozzle in accordance with a preferred embodiment of the present invention;
FIG. 10 is a schematic view of a catheter embodiment of the present invention;
FIG. 11 is a diagram illustrating data message delivery according to a preferred embodiment of the present invention;
in the figure: the three-dimensional model of the conduit comprises a three-dimensional model 1 of the conduit, a solid process model 2, a prototype 3, a solid 4, a nozzle 5, a conduit prototype 6, a hole 11, process filling 21, a forming allowance 22, a prototype central line 33, a support 41, a slice layer height 42 and a solid central line 43.
Detailed Description
The present invention will be further described with reference to the following examples, however, the scope of the present invention is not limited to the following examples.
Example 1: taking a certain aircraft conduit part as an example, a PLA material is selected, and the process of selectively extruding and selectively depositing the material through the nozzle 5 by using a heat source to melt the material is described as a method for manufacturing the conduit sample 6, and the flow of the manufacturing method is shown in fig. 1.
Fig. 2 shows a three-dimensional model 1 of a guide pipe, which has a complicated spatial trend and a hole 11, and the measurement of the model and the processing capability of a numerical control pipe bender show that the two adjacent middle straight-line sections and the end processing straight-line sections of the guide pipe cannot meet the clamping distance of a die in the numerical control bending process, so that manual bending is adopted, the manual bending needs a real sample, and the real sample is prepared according to the process flow of fig. 1.
The specific manufacturing method comprises the following steps:
and 7, manually bending and forming a conduit blank by taking the conduit full sample 6 as a reference, checking by using a special tool manufactured by the three-dimensional conduit model 1, if the two dimensions are not coordinated, analyzing and searching reasons, and repeating the steps, wherein the steps are shown in the process flow of fig. 1 until qualified parts meeting the process requirements or technical requirements are manually bent and formed according to the conduit full sample 6.
Step 7 also includes trimming the remaining amount after the catheter blank is bent and shaped and the bending direction is corrected, wherein the trimming of the remaining amount includes removing the forming remaining amount 22, the process filling 21 and the opening 11 until the manufactured catheter conforms to the three-dimensional model of the catheter.
The invention solves the problem that the middle straight line segment is short and cannot meet the requirement of numerical control bending forming; the problems of time consumption, large workload and high cost of repeatedly sampling the catheter on site are solved; the problem of low manufacturing precision caused by the fact that the traditional catheter sampling completely depends on manual control of the direction and the gap of the catheter is solved. The method greatly shortens the production period, saves the time for preparing the real sample and improves the sampling precision.
While there have been shown and described what are at present considered to be the basic principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A method of manufacturing a catheter sample, comprising the steps of:
step 1, establishing a catheter three-dimensional model;
step 2, constructing an entity process model on the basis of the three-dimensional model of the conduit;
3, manufacturing an entity in an additive mode on the basis of the entity process model;
step 4, measuring the entity, comparing the measured data with the entity process model, and re-manufacturing or manually correcting the process parameters which do not meet the process requirements or the technical requirements to be qualified according to the optimized process parameters in the step 2;
step 5, selecting a sample tube with a corresponding size to bend along the center line of the trend of the entity based on the qualified entity to obtain an initial-shaped real sample;
step 6, measuring the prototype by using a measuring device, comparing the measured data with the entity process model, and manually correcting the prototype which does not meet the process requirement or the technical requirement until the prototype is qualified to obtain a conduit prototype based on the three-dimensional model;
and 7, manually bending and forming the conduit blank by taking the conduit full sample as a reference, checking by using a special tool manufactured according to the three-dimensional model of the conduit, analyzing and searching reasons if the conduit blank is not coordinated, and repeating the steps 1 to 6 until qualified parts are manually bent and formed according to the conduit full sample.
2. A method of manufacturing a catheter master sample according to claim 1, wherein the building of the solid process model in step 2 comprises process-complementary design of the part geometry.
3. A method of manufacturing a catheter version as claimed in claim 2 wherein the process complementary design includes form allowance and process filling of the part geometry.
4. The method of claim 1, wherein the step 3 of manufacturing the solid body comprises adjusting the position of the solid process model in the slicing software, setting the manufacturing speed, layer height, packing density, temperature, etc., selecting a proper adhesion platform mode and support type, setting the additive manufacturing material type and properties, programming a numerical control program, manufacturing by direct energy deposition or powder bed melting, and processing the solid body with the appearance characteristics of the solid process model.
5. A method of manufacturing a catheter sample according to claim 4, wherein the additive manufacturing material is polylactic acid (PLA).
6. A method of manufacturing a real sample of a pipe as claimed in claim 4, wherein the additive manufacturing temperature is 170 to 230 ℃ and the process parameter layer height is set to be half the nozzle diameter.
7. A method of manufacturing a catheter version as claimed in claim 1 wherein in step 5 the sample tube is an aluminium tube of 6 x 1mm or 8 x 1mm diameter.
8. A method of manufacturing a catheter sample according to claim 1, wherein the measuring device in step 6 is a laser measuring machine.
9. A method of manufacturing a catheter version as claimed in claim 3 wherein step 7 further comprises trimming the blank after bending and straightening the bend, the trimming comprising removing the forming stock, process filling and aperturing.
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CN202210804816.4A CN115178625A (en) | 2022-07-08 | 2022-07-08 | Method for manufacturing guide pipe sample |
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CN202210804816.4A CN115178625A (en) | 2022-07-08 | 2022-07-08 | Method for manufacturing guide pipe sample |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116861569A (en) * | 2023-08-25 | 2023-10-10 | 北京星河动力装备科技有限公司 | Rocket engine pipeline assembly and manufacturing method thereof |
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CN105095605A (en) * | 2015-09-15 | 2015-11-25 | 沈阳飞机工业(集团)有限公司 | Simulation method of airplane conduit machining process |
CN106354919A (en) * | 2016-08-26 | 2017-01-25 | 北京星航机电装备有限公司 | Digital and precise formation method for pipeline |
CN113068457B (en) * | 2014-12-24 | 2017-07-28 | 中国人民解放军第五七二0工厂 | Rapid and accurate digital manufacturing method for aviation conduit |
CN110874503A (en) * | 2019-11-22 | 2020-03-10 | 中国航发控制***研究所 | Rapid development method for aero-engine control system product |
CN111036901A (en) * | 2019-12-10 | 2020-04-21 | 西安航天发动机有限公司 | Selective laser melting forming method for multi-material part |
US20200353569A1 (en) * | 2017-10-30 | 2020-11-12 | Cutwork B.V. | An elongate profile, an assembly comprising the elongate profile and a method for producing the elongate profile |
CN112395708A (en) * | 2020-11-27 | 2021-02-23 | 北京宇航***工程研究所 | Pipeline digital reconstruction method based on accurate measurement |
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2022
- 2022-07-08 CN CN202210804816.4A patent/CN115178625A/en active Pending
Patent Citations (8)
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CN103272901A (en) * | 2013-06-17 | 2013-09-04 | 沈阳飞机工业(集团)有限公司 | Method for taking and manufacturing guide tube real samples |
CN113068457B (en) * | 2014-12-24 | 2017-07-28 | 中国人民解放军第五七二0工厂 | Rapid and accurate digital manufacturing method for aviation conduit |
CN105095605A (en) * | 2015-09-15 | 2015-11-25 | 沈阳飞机工业(集团)有限公司 | Simulation method of airplane conduit machining process |
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Cited By (1)
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CN116861569A (en) * | 2023-08-25 | 2023-10-10 | 北京星河动力装备科技有限公司 | Rocket engine pipeline assembly and manufacturing method thereof |
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