CN115415742A - Manufacturing method of guide pipe welding clamp - Google Patents
Manufacturing method of guide pipe welding clamp Download PDFInfo
- Publication number
- CN115415742A CN115415742A CN202210984182.5A CN202210984182A CN115415742A CN 115415742 A CN115415742 A CN 115415742A CN 202210984182 A CN202210984182 A CN 202210984182A CN 115415742 A CN115415742 A CN 115415742A
- Authority
- CN
- China
- Prior art keywords
- target
- fixture
- manufacturing
- printing
- slice
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 65
- 238000003466 welding Methods 0.000 title claims abstract description 50
- 238000007639 printing Methods 0.000 claims abstract description 62
- 238000000034 method Methods 0.000 claims abstract description 46
- 239000000654 additive Substances 0.000 claims abstract description 30
- 230000000996 additive effect Effects 0.000 claims abstract description 30
- 230000008569 process Effects 0.000 claims description 20
- 238000005516 engineering process Methods 0.000 claims description 19
- 238000000016 photochemical curing Methods 0.000 claims description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 238000003754 machining Methods 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000010891 electric arc Methods 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 238000000638 solvent extraction Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 abstract description 2
- 230000000875 corresponding effect Effects 0.000 description 14
- 238000001723 curing Methods 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The application discloses manufacturing method of pipe welding jig relates to 3D and prints technical field, including the step: calling a target three-dimensional model corresponding to the digital model of the target fixture; extracting target structure characteristic information of the target three-dimensional model; based on the target structure characteristic information, acquiring the position relation of a relevant structure in a target fixture digital model; obtaining the printing direction of the digifax of the target clamp based on the obtained position relation; acquiring a slice file based on the target structure characteristic information; acquiring digital-analog contour information of the target fixture based on the slice file; obtaining a shaping path of the target fixture based on the profile information; the target fixture is formed by additive manufacturing techniques based on the forming path and the printing direction. This application is owing to adopt the direct manufacturing pipe anchor clamps of additive manufacturing technique, can show to shorten anchor clamps manufacturing cycle, is showing the assembly and the size precision that improve anchor clamps.
Description
Technical Field
The application relates to the technical field of 3D printing, in particular to a manufacturing method of a catheter welding clamp.
Background
With the rapid development of computer technology and the wide application of three-dimensional digital definition in the design of airplane products and processes, the trial production speed of airplanes is accelerated, the development period is shorter, and the requirement on manufacturing precision is higher. Particularly, in the development stage of a new airplane, the spatial trend of the guide pipe is in the process of repeated iteration and continuous optimization, and the airplane guide pipe generally has the trend of multi-variety and single-piece production. Aircraft ducts are large in number, most of which are manufactured by welding, and the welding of the ducts usually requires a jig for positioning and welding the ducts.
The traditional pipe welding fixture usually adopts a combined fixture, and needs to design structures such as a support structure, a positioner, a pipe press and the like according to the structure of a pipe, and the final fixture is formed by bolt combination and assembly. The combined clamp has the problems of complex structure, long manufacturing period, combination precision deviation and the like, so that a new method is required to be adopted to finish the rapid manufacturing of the clamp aiming at the rapid manufacturing requirement of the catheter.
Disclosure of Invention
The application mainly aims to provide a manufacturing method of a conduit welding clamp, and aims to solve the problems that a traditional conduit welding combined clamp in the prior art is complex in structure, long in manufacturing period and poor in manufacturing precision.
In order to solve the above technical problem, an embodiment of the present application provides the following technical solutions:
a method of manufacturing a conduit welding jig, comprising:
calling a target three-dimensional model corresponding to a target fixture digital model from a fixture digital model database; the fixture digital-analog database is preset with a plurality of three-dimensional models corresponding to the fixture digital-analog;
extracting target structure characteristic information of the target three-dimensional model;
based on the target structure characteristic information, acquiring the position relationship between a base and a support in a target fixture digifax, the position relationship between the support and a positioner and the position relationship between the support and a pipe press;
obtaining the printing directions of the base, the support, the positioner and the pipe press in the digifax of the target fixture based on the position relation between the base and the support, the position relation between the support and the positioner and the position relation between the support and the pipe press;
based on the target structure characteristic information, carrying out hierarchical slicing on the target fixture digital model by using slicing software to obtain a slicing file;
acquiring slice contour data of the slice file, and acquiring inner and outer contour information of a slice based on the slice contour data;
based on the information of the inner contour and the outer contour of the slice, carrying out inward deviation of the outer contour and outward deviation of the inner contour on the slice contour to form a biased contour path, and adopting a reciprocating short line scanning path for the inner area of the slice to obtain a forming path of each layered slice of the digital model of the target fixture;
forming a target fixture by an additive manufacturing technique based on the forming path and the printing direction.
Optionally, before the step of retrieving the target fixture digifax from the fixture digifax database to obtain the structural feature information of the target fixture digifax, the method further includes the steps of:
designing a clamp for clamping a corresponding conduit according to the shape of the conduit to be processed;
obtaining a three-dimensional model of the clamp based on the physical form of the clamp;
and (4) putting the obtained three-dimensional model in a warehouse and archiving to form a digital-analog database of the fixture.
Optionally, the extracting target structure feature information of the target three-dimensional model includes:
partitioning the target three-dimensional model;
and extracting the position parameters of all blocks, wherein each angular point of each block corresponds to a coordinate value, each coordinate value comprises an X-axis value, a Y-axis value and a Z-axis value, and the coordinate value set of all blocks forms the structural characteristic information of the target three-dimensional model.
Optionally, the target holder includes: a base-support structure, a locator and a tube press;
the step of forming a target fixture by additive manufacturing techniques based on the forming path and the printing direction includes:
the base-support structure is printed and formed according to the printing direction, the forming path and a process parameter I by an electric arc additive printing technology;
and printing and forming the positioner and the pipe press according to the preset printing direction, the preset forming path and the preset process parameter II by using a photocuring printing technology.
Optionally, the process parameter I is that in the CMT mode, the layering thickness is 3.5mm to 4mm, the wire feeding speed is 5.5m/min to 6.0m/min, the welding current is 105A to 125A, the welding voltage is 15V to 25V, the forming speed is 8mm/s to 12mm/s, the lapping distance is 2.5mm to 3mm, the dry elongation is 15mm to 20mm, the protective gas is argon, and the flow rate of the protective gas is 25L/min to 30L/min.
Optionally, the printing material of the arc additive printing technology is an ER4043 aluminum alloy wire with the diameter of 1.2mm-1.5 mm.
Optionally, the process parameter ii is: the thickness of the layering layer is 0.05mm-0.1mm, the diameter of the laser plate is 0.1mm-0.25mm, the laser power is 360mW-420mW, and the printing speed is 7800mm/s-8200mm/s.
Optionally, the printing material of the photo-curing printing technology is photosensitive resin.
Optionally, after the step of forming the target fixture by the additive manufacturing technology based on the forming path and the printing direction, the method further includes:
machining the formed base-support structure, locator and tube compressor to finally assemble a catheter welding jig.
A pipe welding fixture is obtained through the manufacturing method of the pipe welding fixture.
Compared with the prior art, the beneficial effects of this application are:
compared with the traditional combined clamp which uses bolts for assembling and forming, the manufacturing method of the guide pipe welding clamp provided by the embodiment of the application directly manufactures the integrally formed guide pipe clamp by adopting an additive manufacturing technology, distinguishes the inner contour and the outer contour by an equidistant offset contour algorithm in the manufacturing process, implements inward deviation of the outer contour and outward deviation of the inner contour to form an offset contour path, and forms an inner area by adopting a reciprocating short line scanning path to further obtain a forming path of each layered slice of a target clamp digital-analog, thereby optimizing the path, avoiding the defect on the planning path, realizing the filling of a printed continuous path and realizing the filling of the printed clamp without gaps, reducing the printing times, saving the printing pause time, improving the printing efficiency, obviously shortening the clamp manufacturing period, realizing the quick delivery and use of the guide pipe clamp, meanwhile, compared with the traditional combined clamp, the additive manufactured guide pipe clamp can obviously improve the assembling and size precision of the clamp, and correspondingly also improves the manufacturing precision of the guide pipe.
Drawings
Fig. 1 is a schematic structural diagram of a catheter welding fixture according to an embodiment of the present disclosure;
FIG. 2 is a pictorial view of a base-support structure for arc additive manufacturing;
FIG. 3 is a pictorial view of a tube press and retainer made by photocuring;
fig. 4 is an illustration of the base-support structure of fig. 2 assembled with tube presses and locators.
The reference numbers in the figures indicate:
100-base, 200-support, 300-positioner, 400-tube press.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B", including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
Referring to fig. 1 to 4, the embodiment of the present application provides a method for manufacturing a catheter welding jig, wherein the catheter welding jig includes a base 100, a support 200, a positioner 300, and a tube pressing device 400, the support 200 is disposed on the base 100 along the tube body of a catheter to be welded, the positioner 300 is disposed on the supports 200 at two ends, and the tube pressing device 400 is disposed on the corresponding support 200 according to a field situation. The manufacturing method of the pipe welding fixture in the embodiment comprises the following steps:
calling a target three-dimensional model corresponding to a target fixture digital-analog from a fixture digital-analog database; the fixture digital-analog database is preset with a plurality of three-dimensional models corresponding to the fixture digital-analog;
extracting target structure characteristic information of the target three-dimensional model;
based on the target structure characteristic information, acquiring the position relationship between a base and a support in a target fixture digifax, the position relationship between the support and a positioner and the position relationship between the support and a pipe press;
obtaining the printing directions of the base, the support, the positioner and the pipe press in the digifax of the target fixture based on the position relation between the base and the support, the position relation between the support and the positioner and the position relation between the support and the pipe press;
based on the target structure characteristic information, slicing the digital model of the target fixture by using slicing software in a layering way to obtain a slicing file;
acquiring slice contour data of the slice file, and acquiring inner and outer contour information of a slice based on the slice contour data;
based on the information of the inner contour and the outer contour of the slice, the outer contour of the slice is deflected inwards, the inner contour of the slice is deflected outwards to form a biased contour path, and the inner area of the slice adopts a reciprocating short line scanning path to obtain a forming path of each layered slice of the digital model of the target fixture;
forming a target fixture by an additive manufacturing technology based on the forming path and the printing direction, wherein the target fixture comprises a pipe pressing device, a positioner and an integrated support and base;
and machining the formed target fixture, assembling the target fixture, and finally obtaining the conduit welding fixture.
It is anticipated that in this embodiment, the target fixture refers to three components of the base-support structure, the positioner 300 and the tube press 400, which are formed by integrally forming the base 100 and the support 200, and the catheter welding fixture refers to the whole fixture formed by assembling the base-support structure, the positioner and the tube press. In the actual implementation process, the base-support structure, the positioner and the pipe pressing device are manufactured firstly, and finally the base-support structure, the positioner and the pipe pressing device are machined and then assembled to form the pipe welding fixture.
Obviously, the support and the base are printed and formed into an integrated structure through an additive manufacturing and forming method, the pipe press and the positioner are formed, the pipe press and the positioner are assembled to the corresponding support, and the pipe welding fixture is finally formed.
The manufacturing method of the catheter welding jig provided in this embodiment is specifically implemented as follows for each step:
with regard to the steps: and (3) calling a target three-dimensional model corresponding to the target fixture digital model from the fixture digital model database: before the step, a clamp digital-analog database is also required to be established, and the specific method for establishing the clamp digital-analog database is
Firstly, designing a clamp for clamping a corresponding conduit according to the shape of the conduit to be processed;
because the use occasions of the conduits to be processed are different, the shape of each conduit to be processed is possibly different according to different use scenes, so that the corresponding clamps for processing the conduit are different, and the corresponding conduit clamps are designed aiming at the conduits with different shapes processed each time so as to be convenient for the direct application in the subsequent production;
secondly, obtaining a three-dimensional model of the clamp based on the physical form of the clamp;
generally, the three-dimensional model can be established by drawing and forming through three-dimensional software, and also can be obtained by scanning a real object through a three-dimensional scanner, and compared with the prior art, the three-dimensional model scanned and formed through the three-dimensional scanner is obviously more accurate in accuracy, shorter in manufacturing cycle and higher in efficiency, so in the embodiment, the three-dimensional scanner is preferably selected to scan and form the three-dimensional model;
finally, the obtained three-dimensional models are sorted and stored in a warehouse and filed to form a clamp digital-analog database;
it can be understood that, in order to be able to quickly retrieve data later, obtain a three-dimensional model of a certain pipe clamp, and finally manufacture the pipe clamp according to the designed model, the above-mentioned object can be quickly achieved by establishing the clamp database, so that the production cycle of clamp manufacture can be effectively reduced.
With regard to the steps: extracting target structure characteristic information of the target three-dimensional model, wherein a specific implementation mode of the method is as follows:
firstly, obtaining a target three-dimensional model to be printed from an established fixture digital-analog database through model processing software;
secondly, traversing and framing the target three-dimensional model by using a target frame with a specific size (such as 4 x 4) by using model processing software, so as to divide the target three-dimensional model into a plurality of unit blocks;
and finally, extracting the position parameters of all the cell blocks, wherein each angular point of each block corresponds to a coordinate value, each coordinate value comprises an X-axis value, a Y-axis value and a Z-axis value, and the coordinate value set of all the blocks forms the structural feature information of the target three-dimensional model.
In anticipation, structural feature analysis is carried out on the target model through model processing software, feature information of the clamp to be machined can be accurately grasped, and therefore the manufacturing of the high-precision tool clamp is facilitated.
With regard to the steps: based on the target structure characteristic information, acquiring the position relation between a base and a support in a target fixture digital model, the position relation between the support and a positioner and the position relation between the support and a pipe press;
it can be understood that, because the coordinate values of each angular point of each unit block are obtained, based on the coordinate values, the coordinate set of the peripheral outline of the whole target three-dimensional model can be known, and the coordinate sets are marked and displayed on the target three-dimensional model, so that the position relationship between the base and the support, the position relationship between the support and the positioner and the position relationship between the support and the pipe press can be obtained by the coordinate values of each position
And obtaining the printing directions of the base, the support, the positioner and the pipe press in the target fixture digifax based on the position relation between the base and the support, the position relation between the support and the positioner and the position relation between the support and the pipe press.
It can be understood that, because the spatial positions of the supporting seat, the positioner and the pipe press are related to the spatial trend of the guide pipe, the spatial positions of different guide pipes are complex to change, and the number of the supporting seats is different; in order to ensure the forming precision of the additive manufacturing, the direction in which the long edges of a plurality of supports are positioned is determined as the printing direction in the same layer.
With regard to the steps: based on the target structure characteristic information, carrying out hierarchical slicing on the target fixture digital model by using slicing software to obtain a slicing file; the specific implementation process is as follows:
firstly, processing three-dimensional model data of a target fixture digital model by using slicing software to obtain an STL model;
next, loading the STL model into a PC (personal computer) for processing the STL model machine, and reading the STL model;
then, taking a plane parallel to the base as a tangent plane, and carrying out layered interception on the STL model from bottom to top according to a preset thickness;
and finally, the slicing software automatically generates a slicing file according to the intercepted slice.
It can be understood that the STL model is a sealed mesh composed of a plurality of triangles to simulate the shape of an object, a single triangle becomes a triangle patch, three vertices of each triangle patch represent the three-dimensional coordinates of the model at the position, each left storage format is (X, Y, Z), coordinate values X, Y, Z are positive numbers, each triangle patch has a normal vector (N) that can be determined by a right-hand criterion, the normal vector must point to the outer surface of the object, each triangle patch is coterminous with an adjacent triangle patch, but the vertex of one triangle is not on the side of another triangle. The triangular patches can simulate smooth curved surfaces, and when the triangular patches are smaller and the number is larger, the details of the simulated real object are more vivid and visible. The number of triangular patches is positively correlated with the accuracy of the model.
Meanwhile, currently, the STL model has two storage formats, namely an ASCII text format and a Binary (Binary) format, and compared with the ASCII text format, the ASCII text format is more popular and easier to understand, has good readability, can be manually read and written and correct errors, and more importantly, the current slicing algorithm of the STL model in the ASCII text format is more mature, and the programming is simpler, so that the STL model in the embodiment is stored in the ASCII text format;
in addition, the layer thickness parameter of the slices is in an inverse relation with the number of the slices, the thinner the layering is, the more the number of layers is, the better the model forming effect is, and the longer the corresponding printing time consumption is, so that the selection of the preset thickness needs to meet the advantages of good forming effect and low printing time consumption as much as possible.
With regard to the steps: acquiring slice contour data of the slice file, and acquiring inner and outer contour information of a slice based on the slice contour data;
based on the information of the inner contour and the outer contour of the slice, the outer contour of the slice is deflected inwards, the inner contour of the slice is deflected outwards to form a biased contour path, and the inner area of the slice adopts a reciprocating short line scanning path to obtain a forming path of each layered slice of the digital model of the target fixture;
it will be appreciated that after the layered processing is completed, a data set of slice profiles is obtained, and a fill path, i.e., a shaping path, needs to be designed for the slices. The specific implementation mode is as follows:
firstly, analyzing the position relation between each triangular patch and the intercepted slice in the STL model, if the triangular patches and the intercepted slice are intersected, solving all intersecting lines of the slice and the STL model, and then orderly connecting the intersecting lines of all sections to obtain the profile data of the changed slice;
then, based on the profile data of the slice, determining the thickness of the transition layer through an inner and outer profile detection algorithm and a collision detection algorithm;
and finally, a filling area of the transition layer is called an inner contour filling area, a smooth inner contour is generated firstly, a new partition is generated at a gap between the transition layer and the inner contour and added to the contour array, and then path filling is carried out on the inner contour area and the new partition by an equidistant offset contour method to generate a path Gcode file.
It can be understood that the generation of the path needs to consider the order of path printing, the order of path printing of the 3D printing system is determined according to the distance between the path and the printing head, the offset contour path is adopted for filling, the starting point is the end point, and the printer cannot be moved to the next arriving path to close the heating system in the process of closing, so that the repeated opening of the printer can be avoided, the performance of the printer is maintained, and the service life of the printer is prolonged.
Meanwhile, the equidistant bias contour path is that the path is equidistantly inwardly or outwardly shifted by a distance specified by a path distance parameter according to the initial outer contour line, and the process is repeated until the path fills the filling area in the model. The path produced by the offset contour reduces path breakpoints, the printing head runs idle, and the path sharp angle is reduced.
The method has the advantages that offset contour scanning is adopted to scan the contour of the section in a circle-by-circle equidistant and parallel offset to the inside, so that the idle running probability of scanning is reduced, the number of times of sharp corners of scanning is reduced, repeated processing in the same local area is reduced, heat dissipation is easy, and the problems that the formed part is curled, warped and deformed due to different temperatures in different places of the formed part and the like are avoided.
With regard to the steps: forming a target fixture by an additive manufacturing technology based on the forming path and the printing direction, wherein the target fixture comprises a tube press, a positioner and an integrated support and base, and the realization manner in one embodiment is as follows:
firstly: support and base arc vibration material disk integrated into one piece
Specifically, the method comprises the following steps: the electric arc additive manufacturing technology is an advanced digital manufacturing technology which is based on a welding technology, adopts electric arc or plasma arc as a heat source to melt metal welding wires, manufactures three-dimensional metal blanks close to the shape and the size of a product by a line-surface-body according to a layer-by-layer accumulation principle and a three-dimensional digital model, mainly takes the forms of gas metal arc welding, argon tungsten-arc welding, plasma arc welding and the like, and forms a three-dimensional entity by layer-by-layer accumulation through layered slicing and path planning according to the three-dimensional structural model.
Selecting an aluminum alloy material with the thickness of 20mm as a base, determining the size of the base according to the maximum size of a digifax of a target clamp, selecting an aluminum alloy wire (ER 4043 aluminum alloy wire with the diameter of 1.2 mm) as a material for electric arc additive molding of the base according to the structural size characteristics and the layered slicing shape of the base, introducing a Gcode file into a printer, outputting an execution code of the robot according to electric arc additive manufacturing, and printing by using a welding gun by using the robot so as to finish the integral additive molding of the base and the base;
in one embodiment, in performing the arc additive manufacturing process, printing is performed with process parameters of a slice lamination thickness of 3.5mm, a wire feed speed of 5.5m/min, a welding current of 105A, a welding voltage of 15V, a forming speed of 8mm/s, a lap gap of 2.5mm, a dry elongation of 15mm, a shielding gas of argon, and a shielding gas flow rate of 25L/min in CMT mode;
of course, in another embodiment, the process parameters for performing arc additive manufacturing are: the layered thickness is 3.8mm, the wire feeding speed is 5.8m/min, the welding current is 115A, the welding voltage is 20V, the forming speed is 10mm/s, the lapping interval is 2.8mm, the dry elongation is 18mm, the protective gas is argon, and the flow rate of the protective gas is 28L/min;
in yet another embodiment, the process parameters for performing arc additive manufacturing are: the layered thickness is 4mm, the wire feeding speed is 6.0m/min, the welding current is 125A, the welding voltage is 25V, the forming speed is 12mm/s, the lapping interval is 3mm, the dry elongation is 20mm, the protective gas is argon, and the flow rate of the protective gas is 30L/min.
Then, the locator and the pipe press are molded by photocuring printing;
specifically, the photocuring printing technology adopts laser focusing on the surface of a photocuring material, so that the photocuring material is sequentially solidified from point to line and from line to surface, and the three-dimensional entity is formed by stacking layers, wherein the laser beam is approximately used for irradiating the surface of liquid photosensitive resin to solidify a resin layer in a specific area on the surface, and then a part of a part is generated when a first layer is processed; then, covering another liquid resin on the curing layer at a certain distance from the 3d printer lifting platform, scanning the second layer, and simultaneously firmly attaching the second layer of curing layer to the first layer of curing layer to form a three-dimensional entity in a stacking manner. The photosensitive resin is used as a raw material of a photocuring printing technology, and the photosensitive resin is required to be small in volatility, low in viscosity, good in stability, fast in curing and low in shrinkage rate, and has good mechanical properties and thermal stability after curing.
The locator and the pipe press mainly play roles in locating and fixing, printing and manufacturing are carried out by adopting a photosensitive resin photocuring method, and after a Gcode file is led into photocuring printing equipment, printing is carried out by setting printing parameters;
in one embodiment, the process parameters when performing photocured printing are as follows: the thickness of the layered layer is 0.05mm, the diameter of a laser light plate is 0.1mm, the laser power is 360mW, the printing speed is 7800mm/s, the size precision of the photocuring structure is controlled, and the size deviation is controlled to be +/-0.1 mm;
in another embodiment, the process parameters when performing the photocuring printing are as follows: the thickness of the layering layer is 0.75mm, the diameter of the laser light plate is 0.2mm, the laser power is 380mW, the printing speed is 8000mm/s, the size precision of the light curing structure is controlled, and the size deviation is controlled to be +/-0.1 mm;
in yet another embodiment, the process parameters when performing photocured printing are as follows: the thickness of the layering layer is 0.1mm, the diameter of a laser light plate is 0.25mm, the laser power is 420mW, the printing speed is 8200mm/s, the size precision of the photocuring structure is controlled, and the size deviation is controlled to be +/-0.1 mm;
then, after the additive manufacturing of structures such as a support, a positioner, a pipe press and the like is finished, machining corresponding components obtained by electric arc additive manufacturing according to a structure digital model of a guide pipe fixture and the requirement of precision control, removing redundant materials in contact with a contact molded surface area of the guide pipe and a fixed position of the end of the guide pipe, and machining positioning holes and matching holes of the structures of all parts, wherein the machining precision is controlled to be +/-0.05 mm;
and finally, machining the machined integrated base-support structure, the positioner and the pipe press, wherein the machining specifically comprises the following steps: carrying out finish machining on the surface of the base-support structure, changing the surface roughness, removing redundant materials in a molded surface area contacted with the guide pipe, carrying out finish machining on a positioning hole and a matching hole of each part structure, assembling a positioner and a pipe pressing device on a corresponding support in the base-support structure after the finish machining is finished, carrying out tool structure size detection by adopting three coordinates after the assembly is finished, and delivering for use after the detection is qualified.
Visibly, the printing path is formed through an equidistant offset contour algorithm based on an additive manufacturing technology, so that the defect on the planned path is avoided by optimizing the path, the support structure and the clamp body are integrally formed by adopting an electric arc additive manufacturing technology, the high-precision printing and forming of the positioner and the pipe press are completed by adopting a photocuring printing technology, and the pipe welding clamp is finally completed through a small amount of machining, assembling and detecting, so that compared with the traditional combined clamp which is assembled and formed through bolts, the manufacturing period of the clamp can be effectively shortened, and the manufacturing precision of the clamp is improved.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A method of manufacturing a pipe welding jig, comprising:
calling a target three-dimensional model corresponding to a target fixture digital model from a fixture digital model database; the fixture digital-analog database is preset with a plurality of three-dimensional models corresponding to the fixture digital-analog;
extracting target structure characteristic information of the target three-dimensional model;
based on the target structure characteristic information, acquiring the position relation between a base and a support in a target fixture digital model, the position relation between the support and a positioner and the position relation between the support and a pipe press;
obtaining the printing directions of the base, the support, the positioner and the pipe press in the digifax of the target fixture based on the position relation between the base and the support, the position relation between the support and the positioner and the position relation between the support and the pipe press;
based on the target structure characteristic information, carrying out hierarchical slicing on the target fixture digital model by using slicing software to obtain a slicing file;
acquiring slice contour data of the slice file, and acquiring inner and outer contour information of a slice based on the slice contour data;
based on the information of the inner contour and the outer contour of the slice, carrying out inward deviation of the outer contour and outward deviation of the inner contour on the slice contour to form a biased contour path, and adopting a reciprocating short line scanning path for the inner area of the slice to obtain a forming path of each layered slice of the digital model of the target fixture;
forming a target fixture by an additive manufacturing technique based on the forming path and the printing direction.
2. The method for manufacturing a pipe welding jig according to claim 1, further comprising, before the step of retrieving a target jig digifax from a jig digifax database to obtain the structural feature information of the target jig digifax:
designing a clamp for clamping a corresponding conduit according to the shape of the conduit to be processed;
obtaining a three-dimensional model of the clamp based on the real object form of the clamp;
and (4) putting the obtained three-dimensional model in a warehouse and archiving to form a digital-analog database of the fixture.
3. The method of claim 1, wherein the extracting target structural feature information of the target three-dimensional model comprises:
partitioning the target three-dimensional model;
and extracting the position parameters of all the blocks, wherein each angular point of each block corresponds to a coordinate value, each coordinate value comprises an X-axis value, a Y-axis value and a Z-axis value, and the coordinate value set of all the blocks forms the structural feature information of the target three-dimensional model.
4. The method of manufacturing a catheter welding jig of claim 1, wherein the target jig comprises: a base-support structure, a locator and a tube compressor;
the step of forming a target fixture by additive manufacturing techniques based on the forming path and the printing direction includes:
the base-support structure is printed and formed according to the printing direction, the forming path and the process parameter I through an electric arc additive printing technology;
and printing and forming the positioner and the pipe pressing device according to the preset printing direction, the preset forming path and the preset process parameter II by using a photocuring printing technology.
5. The method for manufacturing the pipe welding jig according to claim 4, wherein the process parameters I are that in CMT mode, the layered thickness is 3.5mm to 4mm, the wire feeding speed is 5.5m/min to 6.0m/min, the welding current is 105A to 125A, the welding voltage is 15V to 25V, the forming speed is 8mm/s to 12mm/s, the lapping gap is 2.5mm to 3mm, the dry elongation is 15mm to 20mm, the shielding gas is argon, and the shielding gas flow rate is 25L/min to 30L/min.
6. A method of manufacturing a catheter welding jig according to claim 4, wherein the printing material of the arc additive printing technique is ER4043 aluminium alloy wire of diameter 1.2mm-1.6 mm.
7. The method for manufacturing the pipe welding jig according to claim 4, wherein the process parameters II are as follows: the thickness of the layering layer is 0.05mm-0.1mm, the diameter of the laser light plate is 0.1mm-0.25mm, the laser power is 360mW-420mW, and the printing speed is 7800mm/s-8200mm/s.
8. The method of claim 4, wherein the printing material of the photo-curing printing technique is a photosensitive resin.
9. The method of manufacturing a catheter welding jig of claim 4, further comprising, after the step of forming a target jig by an additive manufacturing technique based on the forming path and the printing direction:
machining the formed base-support structure, the locator and the tube press to finally assemble a catheter welding jig.
10. A pipe welding jig obtained by the method for manufacturing a pipe welding jig according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210984182.5A CN115415742A (en) | 2022-08-17 | 2022-08-17 | Manufacturing method of guide pipe welding clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210984182.5A CN115415742A (en) | 2022-08-17 | 2022-08-17 | Manufacturing method of guide pipe welding clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115415742A true CN115415742A (en) | 2022-12-02 |
Family
ID=84199298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210984182.5A Pending CN115415742A (en) | 2022-08-17 | 2022-08-17 | Manufacturing method of guide pipe welding clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115415742A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115841484A (en) * | 2022-12-30 | 2023-03-24 | 武汉誉城千里建工有限公司 | Steel structure welding quality detection system based on three-dimensional laser scanning |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104175556A (en) * | 2014-07-26 | 2014-12-03 | 河北工业大学 | Rapid forming method based on double-forming head |
| CN108544758A (en) * | 2018-03-12 | 2018-09-18 | 中南大学 | A kind of spiral profile biasing filling optimization method and system |
| CN108723549A (en) * | 2018-05-28 | 2018-11-02 | 河海大学常州校区 | A kind of electric arc increasing material manufacturing method |
| CN109079136A (en) * | 2018-07-25 | 2018-12-25 | 沈阳精合数控科技开发有限公司 | A kind of 3D printing method |
| US20190009475A1 (en) * | 2017-07-05 | 2019-01-10 | Wematter Ab | Method for calculating a path in additive manufacturing |
| EP3431211A1 (en) * | 2017-07-20 | 2019-01-23 | General Electric Company | Method for manufacturing a hybrid article |
| WO2019062143A1 (en) * | 2017-09-30 | 2019-04-04 | 浙江大学 | Three-dimensional printing method |
| CN110605391A (en) * | 2019-09-09 | 2019-12-24 | 江西宝航新材料有限公司 | 3D printing additive manufacturing method of pot-shaped thin-walled workpiece |
| CN110625219A (en) * | 2019-09-04 | 2019-12-31 | 上海工程技术大学 | Electric arc additive manufacturing process for thick-wall aluminum alloy structural parts with different thicknesses |
| CN110695491A (en) * | 2019-09-24 | 2020-01-17 | 浙江大学 | Elbow posture-changing surfacing printing method |
| CN110918988A (en) * | 2019-11-05 | 2020-03-27 | 中航迈特粉冶科技（北京）有限公司 | Laser scanning path planning method and additive manufacturing method |
| CN111299577A (en) * | 2020-02-29 | 2020-06-19 | 华中科技大学 | SLM forming method and product based on intelligent scanning path planning |
| CN113369765A (en) * | 2021-05-19 | 2021-09-10 | 北京航空航天大学 | Clamp and device for electron beam welding and laser additive manufacturing composite connection |
| CN113601833A (en) * | 2021-08-04 | 2021-11-05 | 温州科技职业学院 | FDM three-dimensional printing control system |
| CN114749750A (en) * | 2021-12-31 | 2022-07-15 | 上海工程技术大学 | Forming control method for brazing joint of 3D printed product |
-
2022
- 2022-08-17 CN CN202210984182.5A patent/CN115415742A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104175556A (en) * | 2014-07-26 | 2014-12-03 | 河北工业大学 | Rapid forming method based on double-forming head |
| US20190009475A1 (en) * | 2017-07-05 | 2019-01-10 | Wematter Ab | Method for calculating a path in additive manufacturing |
| EP3431211A1 (en) * | 2017-07-20 | 2019-01-23 | General Electric Company | Method for manufacturing a hybrid article |
| WO2019062143A1 (en) * | 2017-09-30 | 2019-04-04 | 浙江大学 | Three-dimensional printing method |
| CN108544758A (en) * | 2018-03-12 | 2018-09-18 | 中南大学 | A kind of spiral profile biasing filling optimization method and system |
| CN108723549A (en) * | 2018-05-28 | 2018-11-02 | 河海大学常州校区 | A kind of electric arc increasing material manufacturing method |
| CN109079136A (en) * | 2018-07-25 | 2018-12-25 | 沈阳精合数控科技开发有限公司 | A kind of 3D printing method |
| CN110625219A (en) * | 2019-09-04 | 2019-12-31 | 上海工程技术大学 | Electric arc additive manufacturing process for thick-wall aluminum alloy structural parts with different thicknesses |
| CN110605391A (en) * | 2019-09-09 | 2019-12-24 | 江西宝航新材料有限公司 | 3D printing additive manufacturing method of pot-shaped thin-walled workpiece |
| CN110695491A (en) * | 2019-09-24 | 2020-01-17 | 浙江大学 | Elbow posture-changing surfacing printing method |
| CN110918988A (en) * | 2019-11-05 | 2020-03-27 | 中航迈特粉冶科技（北京）有限公司 | Laser scanning path planning method and additive manufacturing method |
| CN111299577A (en) * | 2020-02-29 | 2020-06-19 | 华中科技大学 | SLM forming method and product based on intelligent scanning path planning |
| CN113369765A (en) * | 2021-05-19 | 2021-09-10 | 北京航空航天大学 | Clamp and device for electron beam welding and laser additive manufacturing composite connection |
| CN113601833A (en) * | 2021-08-04 | 2021-11-05 | 温州科技职业学院 | FDM three-dimensional printing control system |
| CN114749750A (en) * | 2021-12-31 | 2022-07-15 | 上海工程技术大学 | Forming control method for brazing joint of 3D printed product |
Non-Patent Citations (2)
| Title |
|---|
| 刘少岗等: "《3D打印先进技术及应用》", 30 November 2020, 机械工业出版社, pages: 13 - 37 * |
| 杨钦杰等: "熔融沉积 3D打印设备研究进展", 《中国塑料》, vol. 36, no. 2, pages 298 - 302 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115841484A (en) * | 2022-12-30 | 2023-03-24 | 武汉誉城千里建工有限公司 | Steel structure welding quality detection system based on three-dimensional laser scanning |
| CN115841484B (en) * | 2022-12-30 | 2023-04-25 | 武汉誉城千里建工有限公司 | Steel structure welding quality detection system based on three-dimensional laser scanning |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110666170B (en) | Support structure design method for complex part SLM forming | |
| US10814439B2 (en) | Turbomachine repair using additive manufacturing | |
| CN110640146B (en) | Modular material-increasing and material-decreasing composite repair method for defect area of part surface | |
| EP2946255B1 (en) | Object production using an additive manufacturing process | |
| JP5100249B2 (en) | Information processing method, information processing apparatus, and program | |
| US20110156304A1 (en) | Die Tool Production Methods Utilizing Additive Manufacturing Techniques | |
| CN106624826B (en) | A kind of microplasma 3D printing and milling combined-machining equipment and method | |
| CN109579733B (en) | Method for rapidly measuring and calculating laser 3D printing forming dimensional precision | |
| JPH09150228A (en) | Manufacture of metallic plate laminated metallic mold | |
| CN115415742A (en) | Manufacturing method of guide pipe welding clamp | |
| Korbi et al. | CAD/tolerancing integration: a new approach for tolerance analysis of non-rigid parts assemblies | |
| He et al. | High-accuracy and high-performance WAAM propeller manufacture by cylindrical surface slicing method | |
| CN109128162B (en) | Method for processing metal workpiece embedded into prefabricated part | |
| CN111496462A (en) | Tool assembly for magnetically aligning components in an additive manufacturing machine | |
| CN108481735B (en) | Structural member overall dimension control method and device based on self-adaptive layered slicing | |
| CN1202924C (en) | Method and device for manufacturing metal mold | |
| CN113560603A (en) | Machining method of bent steel pipe forming die based on 3D printing | |
| Glozer et al. | Laminate tooling for injection moulding | |
| CN116532697A (en) | Composite skin thickness self-adaptive compensation processing method | |
| CN116586717A (en) | Rocket storage tank additive manufacturing method and system | |
| CN112241810B (en) | In-situ deburring path generation method for aircraft blade ceramic core based on local point cloud matching | |
| JP2009211255A (en) | Die working data changing method | |
| CN206415887U (en) | A kind of microplasma 3D printing and milling combined-machining equipment | |
| JPS63119987A (en) | Designing method and manufacturing system for clamping jig | |
| CN110722230B (en) | Part machining method based on electric spark machining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |