CN209273973U - A kind of 3 D-printing seam construction for integral component - Google Patents
A kind of 3 D-printing seam construction for integral component Download PDFInfo
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- CN209273973U CN209273973U CN201822001069.2U CN201822001069U CN209273973U CN 209273973 U CN209273973 U CN 209273973U CN 201822001069 U CN201822001069 U CN 201822001069U CN 209273973 U CN209273973 U CN 209273973U
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- 238000007639 printing Methods 0.000 title claims abstract description 48
- 238000010276 construction Methods 0.000 title claims abstract description 16
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- 230000008569 process Effects 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 10
- 230000004927 fusion Effects 0.000 abstract description 9
- 238000005498 polishing Methods 0.000 abstract description 5
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- 229910052751 metal Inorganic materials 0.000 description 6
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Abstract
The utility model is a kind of 3 D-printing seam construction for integral component, comprising: technique backing plate and at least two integral components；It is connected between at least two integral components, and the junction of at least two integral components is provided with groove；Technique backing plate is set to the lower section of groove, and the groove of technique backing plate connection integral component, and the connecting portion of technique backing plate and groove reserves specific interval so that groove not with technique pad contact.The utility model is that surplus has been stopped in the deformation of technique backing plate in the forming connection procedure for prevent integral component, make to connect the generation that groove bottom end is merged with the sufficiently combination of connection increasing material position to prevent incomplete fusion defect again, and it may insure in machining removal technique backing plate process, technique backing plate completely removes completely, reduces difficulty for subsequent handling polishing infiltration and saves activity time.
Description
Technical field
The utility model relates to 3 D-printing fields, more particularly to a kind of 3 D-printing seam knot for integral component
Structure.
Background technique
In past half a century, current increasing material has been achieved in the fusion of laser technology, computer technology, new material technology
The brand-new epoch of (3D printing) technology of manufacture.It is different from tradition casting, forging needs after die forming blank again cutting processing subtracts material system
It makes, increasing material manufacturing is the direct net forming technique of no mold, is based on CAD, by material or successively solid
Change, deposition, or successively tired folded, block group welding is connected to become integrally-built emerging manufacturing technology.
Traditional forge piece keeps its thermal stress uneven due to its shape, construction, and easy cracked, slight crack even forms crack,
3 D-printing can repair the defect of this forge piece with the advantage of its characteristic.In addition to this, three-dimensional printing technology is also
Drip molding can be attached, process is simple, and postprocessing working procedures are simple, and cost is relatively low.
Patent document CN106271364A, it discloses " a kind of local route repair method based on 3 D-printing ", patent text
A kind of local route repair method based on 3 D-printing is described in offering, the specific steps are as follows: obtain standard workpiece data model；It is right
Workpiece to be repaired is scanned, and establishes workpiece data model to be repaired according to scan data；By workpiece data model to be repaired and standard
Workpiece data model carries out analysis comparison, extracts defect areas；Defect areas is analyzed, calculate can by defect areas from
The cut surface separated in workpiece main body to be repaired；Workpiece to be repaired is cut according to cut surface；According to cut surface and standard workpiece data mould
Type generates the patch formation model that can repair workpiece main body to be repaired；Hierarchical diagram is generated according to patch formation model；With the cutting on workpiece to be repaired
Face is bottom surface, carries out printing reparation to workpiece main body to be repaired according to hierarchical diagram.This method high degree relies on data model, logarithm
Mould data error or printing fact cannot adapt to completely, and without surplus between workpiece to be repaired and patch formation model, when post-processing, easily
It is easy that workpiece to be repaired is caused to consume.
Utility model content
In order to solve the above-mentioned technical problem and its one of, the utility model provides a kind of three-dimensional for integral component and beats
Print seam construction.
3 D-printing seam construction provided by the utility model for integral component, comprising: technique backing plate and at least two
A integral component；It is connected between at least two integral components, and the junction of at least two integral components is provided with
Groove；The technique backing plate is set to the lower section of the groove, and the technique backing plate connects integral component, the technique backing plate
Between the integral component reserve specific interval so that the groove not with the technique pad contact.
Preferably, the groove is double V-groove, and the double V-groove bottom is opening setting.
Preferably, the angle between the extended line of the two sidewalls of the double V-groove is 75 ° to 90 °.
Preferably, the specific interval reserved between the technique backing plate and the integral component is 2mm to 3mm.
Preferably, at the technique backing plate and the integral component joint face, along craftwork pad edges of boards edge at interval of 30mm extremely
100mm has a pad formed in a manner of spot welding.
Preferably, the technique backing plate covers the groove between two parties.
The utility model has the advantages that compared with prior art
Using the 3 D-printing seam construction described in the utility model for integral component, by by the waiting of integral component
It is processed into groove at seam, and technique backing plate is preset into the lower section that certain distance is set to groove, the setting of the structure is so that three-dimensional
When printing process progress joint treatment, due to presetting certain distance between technique backing plate and integral component, in laser printing process
In, laser printing powder is directly fallen in the gap between technique backing plate and integral component when beginning, is scanned according to laser printing
The setting of route due to temperature etc., not will do it complete cladding when this layer of laser printing powder carries out laser melting coating, with
The planning of scan path, laser printing powder starts successively to accumulate after laser melting coating, since cladding layer is not when arriving groove
It just has begun to be formed, when laser printing to cut, laser printing powder can merge completely with the edge of cut, this structure
Design can make the connection edge of integral component not stay the gap dead angle that can not carry out 3 D-printing, prevent incomplete fusion defect
It generates, is had excellent performance, will not be generated in the connecting portion that the seam crossing of integral component is formed using structure described in the utility model
Incomplete fusion defect, and the test result of permeability test is excellent.In addition, using technical solution described in the utility model, due to technique
Junction surplus between backing plate and integral component goes out the printing powder of specific interval, also reduces work for technique backing plate removing step
It measures, it can be ensured that technique backing plate is completely removed.
Detailed description of the invention
Fig. 1 is that the integral component of one embodiment of the utility model prints pre-structure schematic diagram；
Fig. 2 is the technique backing structure schematic diagram of one embodiment of the utility model；
Fig. 3 is the specific interval schematic diagram of one embodiment of the utility model；
Fig. 4 is that structural schematic diagram is completed in the connection of one embodiment of the utility model.
Wherein, 1 is technique backing plate, and 2 be integral component, and 3 is increase material join domain, and 4 be groove, and 5 be specific interval, and 6 are
Increasing material join domain after connection.
Specific embodiment
Illustrate specific embodiment according to the present utility model with reference to the accompanying drawing.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the utility model is not limited to following
The limitation of disclosed specific embodiment.
The utility model provides a kind of 3 D-printing seam construction for integral component, as shown in Figure 1, comprising: technique
Backing plate 1 and at least two integral components 2；It is connected between at least two integral components 2, and the connection of at least two integral components 2
Place is provided with groove 4；Technique backing plate 1 is set to the lower section of groove 4, and technique backing plate 1 connects integral component 2, technique backing plate 1 with
Specific interval 5 is reserved between integral component 2, so that groove 4 is not contacted with technique backing plate 1.
Using above-mentioned technical proposal, integral component 2 is set as groove 4 to seam crossing, and technique backing plate 1 presets a spacing
From the lower section for being set to groove 4, when the setting of the structure is so that 3 D-printing process carries out joint treatment, laser printing powder can
To directly fall on technique backing plate 1, due to reserving certain distance between technique backing plate 1 and component, laser printing powder is swashed
When light cladding, laser powder when starting on technique backing plate 1 not will do it complete cladding, with the progress of scanning, laser printing
Powder starts successively to accumulate after laser melting coating, to be formed since cladding layer just has begun when not arriving groove 4, work as laser printing
When to cut, laser printing powder can merge completely with the edge of cut structure, this structure designs the connection that can make component
Edge does not stay the gap dead angle that can not carry out 3 D-printing, prevents the generation of incomplete fusion defect.
In conjunction with above embodiment, as shown in Figure 1, in the present embodiment, two for need to carrying out 3 D-printing connection are complete
The edge of component 2 be regular rectilinear, certainly, in other embodiments, the edge to be connected of integral component 2 also will appear bending or
Irregularly, situations such as discontinuous lines.Therefore, two integral components 2 need respectively along edge finished edge 4 to be connected, and
It inwardly polishes along surface to be connected, with surface smoothness of one or two of integral component 2 to join domain of uniting, it is difficult to reduce printing
Degree.In the present embodiment, the groove 4 of two integral components 2 relative to when at V-type, and along surface to be connected inwardly polish away from
From for 1cm.As shown in Fig. 2, technique backing plate 1 is strip rectangle.When in use, as shown in figure 3, the groove 4 of two integral components 2
Opposite to be not attached to, technique backing plate 1 is padded on two integral components 2 to join domain lower section, and sky reserves specific range.
Using above-mentioned technical proposal, early-stage preparations are done in the connection between multiple integral components 2, the groove 4 being ground
It is flat and smooth, high unity, and be undertaken in by technique backing plate 1 under the part for needing to increase material connection, therefore convenient for increasing material connection
The accumulation fusion of powder is printed in region 3,3 D-printing material merges completely with the printing of the junction of 2 material of integral component, can
Polishing permeable work amount is post-processed after reducing forming connection, prevents the generation of incomplete fusion defect.Between technique backing plate 1 and groove 4
The specific interval 5 that reserves of connecting portion, stopped surplus for the deformation of technique backing plate 1 in prevention forming connection procedure, can be with
Ensure in machining removal 1 process of technique backing plate, technique backing plate 1 completely removes, and reduces for subsequent handling polishing infiltration
Difficulty saves time and cost of labor.
Based on the above technical solution, further, as a preferred embodiment, groove 4 is double V-groove, and V-type slope
Mouth bottom is opening setting, that is, the junction of two integral components 2 is oppositely arranged, and by being machined, is become
The double V-groove structure of bottom opening, the angle between double V-groove can be 75 ° to 90 °, preferably by double V-groove in the present embodiment
Between angle be set as 80 °.
In the present embodiment, as shown in Figure 1, Figure 3, the regular rectilinear edge of two integral components 2 connects early period in printing,
It is processed into groove 4, two grooves 4 are opposite V-shaped, and the angle between double V-groove is 80 °.In other alternative embodiments, V
Angle between type groove can also be 75 ° to 90 °.When printing, the groove 4 of two integral components 2 is opposite but is not attached to, two
The bottom surface that groove 4 extends is connected by technique backing plate 1, and printing powder, successively fusion bonds between double V-groove, complete up to completing two
The connection of whole component 2.
By adopting the above technical scheme, double V-groove not only unite one or two of integral component 2 connect edge physical state, reduce
Difficulty is printed, meanwhile, it stitches small between the double V-groove combination of two integral components 2,3 D-printing powder can be saved.Not only such as
This, the angle of double V-groove is optional between 75 ° to 90 °, it is contemplated that the depth information of integral component 2 meets practical application.
Based on the above technical solution, further, as a preferred embodiment, as shown in figure 3, technique backing plate 1 with
The reserved specific interval 5 of the connecting portion of groove 4 is 2mm to 3mm.In the present embodiment, technique backing plate 1 and two integral components
The specific interval 5 of double V-groove combination between 2 increased between material join domain 3 is preferably 3mm.
By adopting the above technical scheme, when connection printing, increasing material join domain 3 that 3 D-printing powder is combined in double V-groove
Interior layer-by-layer fusion bonding, and since reserved specific interval 5 is 3mm, printing powder exceeds outside the connection of two integral components 2
It is connect with technique backing plate 1 (as shown in Figure 3), is at this time to beat in the reserved interval 3mm after the completion of connection printing (as shown in Figure 4)
Powder is printed, therefore, when removing technique backing plate 1, the 3mm printing powder of even damage excess thickness need to be only eliminated, will not damage
Consume the original structure of integral component 2.In addition, by adopting the above technical scheme, the V-type slope between technique backing plate 1 and two integral components 2
The specific interval 5 of mouth combination increased between material join domain 3 is that 3mm is adapted to existing 3D printing equipment, and polishes post-processing
In margin range, while guaranteeing that technique backing plate 1 is fully apparent from, raw material is utmostly saved.
Based on the above technical solution, further, as a preferred embodiment, technique backing plate 1 and integral component 2 connect
There is a pad formed in a manner of spot welding at junction, along 1 edge of technique backing plate at interval of 30mm to 100mm.In the present embodiment
In, technique backing plate 1 is attached in a manner of spot welding with integral component 2, interval can be depending on the circumstances or the needs of the situation changed in spot welding mode
Distance, such as 50mm, 80mm etc. preferably use the interval 100mm, make the spot welding of technique backing plate 1 Yu integral component 2 in the present embodiment.
Certainly, other than above-mentioned spot welding range, in order to facilitate the removal of technique backing plate 1, spot welding interval also can choose 120mm.In addition,
The connection type of technique backing plate 1 and integral component 2 is also an option that the modes such as laser welding, mechanical arm fixation.
By adopting the above technical scheme, technique backing plate 1 is connect with the spot welding of integral component 2 can play process for stabilizing backing plate 1
Effect, be convenient for subsequent 3D printing joint treatment when, technique backing plate 1 will not move, convenient for when joint treatment 3D printing it is normal
Operation.
Based on the above technical solution, further, as a preferred embodiment, technique backing plate 1 covers groove between two parties
4。
In the present embodiment, as shown in figure 3, technique backing plate 1 covers the double V-groove group of two integral components 2 between two parties.Even
When taking print, the integral component 2 of the connection of technique backing plate 1 and balanced load two sides that cover between two parties makes its stabilization, does not shake, subtracts
Small 3 D-printing difficulty.
By adopting the above technical scheme, covering crackle keeps 3 D-printing process more firm to technique backing plate 1 between two parties, prevents complete
Component 2 is slid in print procedure.
Needle further provides the specific preparation process of the 3 D-printing seam construction for integral component below and three-dimensional is beaten
The treatment of juncture of print.
In the present embodiment, integral component 2 needs to carry out 3 D-printing connection, root using the titanium alloy material of TA15 model
According to the above-mentioned 3 D-printing seam construction for integral component, firstly, using nC vertical milling machine along integral component 2 to even
The place of connecing is milled into groove 4；Polished shown in integral component 2 and technique backing plate 1(Fig. 2 using rotary file), remove its surface oxidation
Layer and groove 4 and 4 surrounding 10mm range inner surface journey metal silvery white of groove, to degrease, sweat stain and oxide skin residual.
Groove 4 between two integral components 2 after above-mentioned machining processes is oppositely arranged, double V-groove, and slope are formed
4 bottoms of mouth are not connected to, and the angle of double V-groove is in 80 degree, and 4 surface of groove connects knife mark without obvious.
Technique for fixing backing plate 1 and integral component 2, and make to preset 3mm distance between technique backing plate 1 and integral component 2, pass through
The mode of spot welding is a solder joint at interval of 50mm along the edge of technique backing plate 1, and technique backing plate 1 and integral component 2 is fixed.
By 4 Length x Width of in-site measurement groove and corner position data, groove 4 three is established on CATIA modeling software
Dimension mould.According to the three-dimensional digital-to-analogue of foundation, scan path is designed, scan path is according to integral component in the present embodiment
The length route at 2 edges to be connected is set as " bending " font, and printed material selects the titanium alloy of the TA15 model of same material
Metal powder.
When 3 D-printing connects integral component 2, in 3 D-printing closed bin, integral component 2 is placed in 3 D-printing
On the substrate of workbench, in oxygen content≤80ppm, laser spot diameter 8mm, laser power 7kw, laser scanning speed
1000mm/min-1200 mm/min, with negative overlapped laser lap, under the process conditions of the slicing layer thickness of 0.7mm, printing
Carry out powder connection of the nozzle according to the print path of setting to two integral components 2.
When printing, since 4 contact area of groove is big, metal powder fuses bonding in time, and two integral components 2 are connected
It connects.Nozzle not only send metal powder between the groove 4 for opening integral component 2, meanwhile, it also send to integral component 2 and craftwork pad
In specific interval 5 between plate 1.
As shown in figure 4, printing connection complete after integral component 2 as monomer members, be not necessarily to and other component into
Row assembling, directly progress annealing operation.Annealing includes stress relief annealing process and school shape annealing operation.
Stress relief annealing process.Element heats after connection is repaired keep the temperature 2 hours to 650 degrees Celsius, then natural
It is cooling.
The technique backing plate 1 of component after being repaired connection using nC vertical milling machine is removed.When operation, technique backing plate 1 with
It is therefore 3mm will not cause to consume to this body structure of component that specific interval 5 is reserved between integral component 2.
Component after connection is subjected to polishing infiltration.
Firstly, the component after connection is polished fairing, until surface journey metal silvery white and being visible by naked eyes crackle.
Secondly, carrying out penetrating inspection to the increasing material join domain 6 after connection.
When penetrating inspection, the polishing surface of the increasing material join domain 6 after connection is sprayed at using metal defect detection bleeding agent, etc.
To ten minutes, using cleaning agent clean the surface penetrating fluid, it then is sprayed at flaw detection surface using imaging agent, is sent out to surface imaging liquid
After dry, surface journey is white and is qualification without penetrating fluid imaging.
School shape annealing operation.Element heats after connection is repaired keep the temperature 1 hour to 750 degrees Celsius, then naturally cold
But.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of 3 D-printing seam construction for integral component characterized by comprising technique backing plate and at least two complete
Whole component；
It is connected between at least two integral components, and the junction of at least two integral components is provided with groove；
The technique backing plate is set to the lower section of the groove, and the technique backing plate connects integral component, the technique backing plate
The prepared separation between the integral component so that the groove not with the technique pad contact.
2. the 3 D-printing seam construction described in accordance with the claim 1 for integral component, which is characterized in that the groove is
Double V-groove, the double V-groove bottom are opening setting.
3. being used for the 3 D-printing seam construction of integral component according to claim 2, which is characterized in that the V-type slope
Angle between the extended line of the two sidewalls of mouth is 75 ° to 90 °.
4. the 3 D-printing seam construction described in accordance with the claim 1 for integral component, which is characterized in that the craftwork pad
2mm is divided into 3mm between reserving between plate and the integral component.
5. according to any 3 D-printing seam construction for integral component of Claims 1-4, which is characterized in that institute
It states at technique backing plate and the integral component joint face, have at interval of 30mm to 100mm one with spot welding side along craftwork pad edges of boards edge
The pad that formula is formed.
6. the 3 D-printing seam construction described in accordance with the claim 1 for integral component, which is characterized in that the craftwork pad
Plate covers the groove between two parties.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822001069.2U CN209273973U (en) | 2018-11-30 | 2018-11-30 | A kind of 3 D-printing seam construction for integral component |
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| CN201822001069.2U CN209273973U (en) | 2018-11-30 | 2018-11-30 | A kind of 3 D-printing seam construction for integral component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230124A (en) * | 2019-12-31 | 2020-06-05 | 南京晨光集团有限责任公司 | Connecting method and device for large-size light-weight 3D printing metal structure |
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2018
- 2018-11-30 CN CN201822001069.2U patent/CN209273973U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230124A (en) * | 2019-12-31 | 2020-06-05 | 南京晨光集团有限责任公司 | Connecting method and device for large-size light-weight 3D printing metal structure |
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Address after: 102206 101, 204, 205, building 5, No. 97, Changping Road, Shahe Town, Changping District, Beijing Patentee after: Xinjinghe Laser Technology Co.,Ltd. Address before: 102206 101, 204, 205, building 5, No. 97, Changping Road, Shahe Town, Changping District, Beijing Patentee before: XINJINGHE LASER TECHNOLOGY DEVELOPMENT (BEIJING) Co.,Ltd. |
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Address after: Room 201, 2nd Floor, No. 5999 Wuxing Avenue, Zhili Town, Wuxing District, Huzhou City, Zhejiang Province, 313000 (self declared) Patentee after: Xinjinghe Laser Technology Co.,Ltd. Address before: 102206 101, 204, 205, building 5, No. 97, Changping Road, Shahe Town, Changping District, Beijing Patentee before: Xinjinghe Laser Technology Co.,Ltd. |
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