CN207205269U - A kind of selective laser fusing and the compound more material shaped devices of wire feed - Google Patents

A kind of selective laser fusing and the compound more material shaped devices of wire feed Download PDF

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Publication number
CN207205269U
CN207205269U CN201720392322.4U CN201720392322U CN207205269U CN 207205269 U CN207205269 U CN 207205269U CN 201720392322 U CN201720392322 U CN 201720392322U CN 207205269 U CN207205269 U CN 207205269U
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silk
feeding head
wire feeding
laser
wire
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宋长辉
彭乔忠
杨永强
林康杰
王迪
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South China University of Technology SCUT
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South China University of Technology SCUT
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

The utility model discloses a kind of fusing of selective laser and the compound more material shaped devices of wire feed;Including can dynamic focusing laser generating system, transport silk material wire feeder and XY spindle guide rail mechanisms;The wire feeding head that XY spindle guides rail mechanism carries wire feeder moves above moulding cylinder according to path planning in XY direction of principal axis;Laser generating system melts SLM as selective laser simultaneously and the thermal source of fusion sediment is carried out to the silk material that wire feeding head exports;Laser generating system changes focal position by dynamic focusing and realizes the melting of silk material and/or powder in Workpiece shaping region.The present apparatus opens up selective laser fusing SLM frontier.By integrating multichannel wire feed lf precipitation equipment on the basis of conventional laser selective melting, compound more material shapings are realized, form new moulding process, the development being melted and molded for selective laser opens new direction and field.

Description

A kind of selective laser fusing and the compound more material shaped devices of wire feed
Technical field
Metal increasing material manufacturing 3D printing technique is the utility model is related to, more particularly to a kind of fusing of selective laser is answered with wire feed Close more material shaped devices.
Background technology
Selective laser fusing is that one kind is based on increasing material manufacturing principle, by the way of being successively superimposed, passes through high power density Laser selectivity the preset metal dust of fusing technology.Specifically, utilize 3D sculpting software on computers first The three-dimensional entity model of part is designed, and is converted into the data format that Slice Software can identify;Secondly by Slice Software Addition and slicing delamination processing are supported to the threedimensional model of acquisition, obtain the cross section profile data of threedimensional model;Then road Footpath planning software is scanned path processing to outline data;The data after the path planning of acquisition are finally imported into selective laser Melting unit, industrial computer is by according to the scanning pattern of every layer of profile, control laser beam constituency successively fusing metal dusty material, by Step stacks the fine and close 3-dimensional metal material object parts of shaping.Its is with the obvious advantage, and selective laser smelting technology uses new manufacture first Theory, belong to Non-mould shaping, i.e., need not manufacture mould, direct disposal molding, greatly reduce spent by die sinking molding when Between.Selective laser, which is melted and molded technology, to be influenceed by part complex topography, have the free forming ability of height.Secondly Using the laser of high-energy-density as thermal source, laser facula concentrates in the range of 20-100um selective laser smelting technology, choosing Globular metallic powder of the fusing particle diameter between 5-50um is selected, the part of the second best in quality surface and high-compactness can be obtained, For surface roughness up to 20-30um, consistency reaches intimate 100%.Other selective laser smelting technology have microcell melting with The characteristics of solidification, because laser beam flying speed is fast, molten metal molten bath is small, so cooled and solidified speed is exceedingly fast, has pole Big degree of supercooling.
But in terms of moulding material, there is strict limitation, current most homogenous material, answering for more materials can not be realized Synthesize shape.But because industrial part can not still meet to the demand of compound more material formings, existing selective laser fusing. Although there is scholar etc. to propose the modes such as selective laser fusing is combined with cladding or selective laser fusing is combined with milling mode, But the powder that these modes namely shape powder cylinder interior to selective laser fusing raw material pollutes especially severe.And swashing Deficiency in terms of light utilization efficiency.
The content of the invention
The shortcomings that the purpose of this utility model is to overcome above-mentioned prior art and deficiency, there is provided a kind of selective laser fusing With the compound more material shaped devices of wire feed.The utility model is using single laser as powder and the thermal source of silk material;Both make By the use of same laser as heating source, the shaping under different situations is realized by dynamic focusing.
The utility model is achieved through the following technical solutions:
A kind of fusing of selective laser and the compound more material shaped devices of wire feed, including can dynamic focusing laser system System, moulding cylinder 1;Melt the wire feeder for also including a transport silk material with the compound more material shaped devices of wire feed in the selective laser With XY spindle guide rail mechanisms;The wire feeding head 4 of XY spindle guides rail mechanism carrying wire feeder is above moulding cylinder 1 according to path planning in XY Direction of principal axis moves;
The silk material 10 that the laser generating system melts SLM as selective laser simultaneously and exported to wire feeding head 4 is carried out The thermal source of fusion sediment;Laser generating system changes focal position by dynamic focusing and realizes silk material 10 and/or powder in workpiece The melting of forming area.
The XY spindle guides rail mechanism includes X-axis guide rail and Y-axis guide rail;Wire feeding head is driven by the motor of XY spindle guide rail mechanisms 4 are moved along X-axis guide rail track, and X-axis guide rail is moved along Y-axis guide rail track, and then realize the basis above moulding cylinder 1 of wire feeding head 4 Path planning moves in XY direction of principal axis;Before each fusion sediment, i.e., the multichannel wire feeding head 4 is located at before powdering and powder fusing operation Initial position, in order to avoid hinder powdering and powder selective melting operation.
The wire feeding head 4 is multichannel wire feeding head or single channel wire feeding head;When using multichannel wire feeding head, the rear end of wire feeding head It is placed with multiple delivery pipes of transport unlike material silk material 10, the tapered structure in the inside of wire feeding head 4;The wire feeding head 4 has automatic To silk function, can be carried out every time before shaping along moulding cylinder horizontal plane to silk;Electro-heat equipment is carried on wire feeding head 4, for inciting somebody to action Silk material from delivery pipe is preheated to 600 DEG C~800 DEG C.
The wire feeding head 4 relative to molding flat adjustable angle.Adjustable wire feeding head 4 is in 45 ° relative to molding flat Tilt.
The laser generating system include successively the laser generator 5 of light path connection, mobile microscope group 6, focusing lens 7 and Scanning galvanometer 8, mobile microscope group 6 is finely tuned by dynamic focusing to change focal position.
The wire feeder also includes several rollers for being used to wind unlike material silk material and the extrusion for drawing silk material Machine 9.
A kind of more method of forming materials, it comprises the following steps:
The silk material 10 that laser generating system melts SLM as selective laser simultaneously and exported to wire feeding head 4 melts The thermal source of deposition;Laser generating system changes focal position by dynamic focusing and realizes silk material 10 and/or powder in Workpiece shaping The melting in region, is comprised the following steps that:
Step 1:Powdering layer precinct laser fusion step
When in selective laser fusing SLM shapings, it is melted and molded to selective laser in equipment Computer and imports shaping work The data of part, after completing powdering operation, the focused spot of laser generating system carries out precinct laser scanning in current powdering layer, directly To the selective laser melting (SLM) molding operation for completing current bisque;
Step 2:The fusion sediment step of silk material 10
After the precinct laser scanning shaping of pawnshop bisque terminates, when silk material 10 carries out fusion sediment, silk material 10 is in wire feeding head 4 Inside it is heated to 800 DEG C or more;When laser generating system is to 10 fuse of silk material, change focused spot position, by bearing defocus Mode, increase laser facula covering silk material 10 end, laser contacts and melts with the end of silk material 10 and be stacked on SLM and be currently molded On layer;
Repeat step one and step 2, until completing the processing of whole workpiece, realize more Material claddings shaping of workpiece.
When silk material 10 described in above-mentioned steps two carries out fusion sediment step, pacify in advance according to label order in wire feeding head 4 Silk material is installed, and is heated to 800 DEG C;Moulding cylinder 1 declines the height of a thickness automatically;The material silk according to needed for label is selected Material, and carried out along current shape layer upper surface to silk, then wire feeding head 4 is according to needed for path planning is moved to the current shape layer More material areas, then, the mobile microscope group 6 of dynamic focusing fine setting expand facula area to current shaping by the way of negative defocus The silk material of top carries out radiant heating, and melts the designated area for being stacked on current shape layer;Until wire feeding head 4 is in X/Y plane The silk material fusing that whole current shape layer is completed according to path planning stacks operation;
After the designated area silk material fusing stacking operation for completing current shape layer, if need to be specified to the another of current shape layer When silk material fusing in region stacks, wire feeding head 4 is first moved to initial position, to silk, then XY spindle guides rail mechanism carries wire feeding head 4, complete current another designated area silk material fusing of shape layer according to path planning and stack operation;So circulation, until completing The silk material fusing of all designated areas of current layer stacks operation;
After the silk material fusing stacking operation for completing all designated areas of current layer, wire feeding head 4 returns to initial position;Or into Type cylinder 1 declines height, the powdering of a thickness according to path planning automatically, powdering highly stacked higher than silk material fusing or and its Flush;Laser generator launches laser 13, and the dynamic focusing scanning galvanometer 8 is swept according to current data layer scanning pattern in computer Retouch, focus is in powdering layer, is completed until current layer scans;
Such cycle alternation, so far complete more materials shaping of whole workpiece.
The utility model is had the following advantages and effect relative to prior art:
Traditional lf selective melting SLM technologies, it is impossible to realize more Material cladding shapings, shaping every time can only use Same metal dust, it is relatively difficult to the forming parts that have multiple material.The utility model adds multichannel wire feed lf , can be as needed after precipitation equipment, in forming process, realize compound more material shapings.
The utility model application is more extensive.Because conventional laser melts selective melting SLM technologies, answered in more materials Had difficulties on synthesis type, the parts containing multiple material are difficult to be molded, application is not wide, exists compared with big limitation. The present apparatus can realize compound more materials shaping, and the part type of institute's energy machine-shaping greatly increases, and has widened application.
The utility model opens up selective laser fusing SLM frontier.By on the basis of conventional laser selective melting Multichannel wire feed lf precipitation equipment is integrated, compound more material shapings is realized, forms new moulding process, be selective laser The development of melt-forming opens new direction and field.
Brief description of the drawings
Fig. 1 is the fusing of the utility model selective laser and the compound more material shaped device structural representations of wire feed.
Fig. 2 is the more material forming process flow chart of steps of the utility model;
Fig. 3 is wire feeding head dimensional structure diagram.
Label in figure:Moulding cylinder 1;Powder collection cylinder 2;Powdering brush 3;Wire feeding head 4;Laser generator 5;Mobile microscope group 6;It is poly- Focus lens 7;Scanning galvanometer 8;Extruder 9;Silk material 10 (i.e. wire consumptive material);Workpiece 11;Metal dust 12;Laser beam 13;Send Silk fused glass pellet part 14;Another material molten deposition modeling part 15;The metal powder layer 16 newly spread;Selective laser It is melted and molded part 17.
Embodiment
The utility model is more specifically described in detail with reference to specific embodiment.
Embodiment
As shown in Figures 1 to 3.The utility model discloses a kind of fusing of selective laser and the compound more material shapings of wire feed to fill Put, including can dynamic focusing laser generating system, moulding cylinder 1;The selective laser is melted to be filled with the compound more material shapings of wire feed Putting also includes the wire feeder and XY spindle guide rail mechanisms of a transport silk material;XY spindle guides rail mechanism carries the wire feeding head of wire feeder 4 move above moulding cylinder 1 according to path planning in XY direction of principal axis.XY spindle guides rail mechanism can be fixed on sealing moulding room both sides On inwall.
The silk material 10 that the laser generating system melts SLM as selective laser simultaneously and exported to wire feeding head 4 is carried out The thermal source of fusion sediment;Laser generating system changes focal position by dynamic focusing and realizes silk material 10 and/or powder in workpiece The melting of forming area.
The XY spindle guides rail mechanism includes X-axis guide rail and Y-axis guide rail;Wire feeding head is driven by the motor of XY spindle guide rail mechanisms 4 are moved along X-axis guide rail track, and X-axis guide rail is moved along Y-axis guide rail track, and then realize the basis above moulding cylinder 1 of wire feeding head 4 Path planning moves in XY direction of principal axis;Before each fusion sediment, i.e., the multichannel wire feeding head 4 is located at before powdering and powder fusing operation Initial position (i.e. positioned at the left or right of X-axis guide rail), in order to avoid hinder powdering and powder selective melting operation.
The wire feeding head 4 is multichannel wire feeding head or single channel wire feeding head;When using multichannel wire feeding head, the rear end of wire feeding head It is placed with multiple (metal consumptive material) delivery pipes of transport unlike material silk material 10, the tapered structure in the inside of wire feeding head 4;The wire feeding head 4 have automatically to silk function, can be carried out every time before shaping along moulding cylinder horizontal plane to silk;With heating dress on wire feeding head 4 Put, for the silk material from delivery pipe to be preheated into 600 DEG C~800 DEG C.
The wire feeding head 4 relative to molding flat adjustable angle.Typically adjust wire feeding head 4 is in relative to molding flat 45 ° of inclinations.
The laser generating system include successively the laser generator 5 of light path connection, mobile microscope group 6, focusing lens 7 and Scanning galvanometer 8, mobile microscope group 6 is finely tuned by dynamic focusing to change focal position.
The wire feeder also includes several rollers for being used to wind unlike material silk material and the extrusion for drawing silk material Machine 9.
The more method of forming materials of the utility model, can be achieved by the steps of:
The silk material 10 that laser generating system melts SLM as selective laser simultaneously and exported to wire feeding head 4 melts The thermal source of deposition;Laser generating system changes focal position by dynamic focusing and realizes silk material 10 and/or powder in Workpiece shaping The melting in region, is comprised the following steps that:
Step 1:Powdering layer precinct laser fusion step
When in selective laser fusing SLM shapings, it is melted and molded to selective laser in equipment Computer and imports shaping work The data of part, after completing powdering operation, the focused spot of laser generating system carries out precinct laser scanning in current powdering layer, directly To the selective laser melting (SLM) molding operation for completing current bisque;
Step 2:The fusion sediment step of silk material 10
After the precinct laser scanning shaping of pawnshop bisque terminates, when silk material 10 carries out fusion sediment, silk material 10 is in wire feeding head 4 Inside it is heated to 800 DEG C or more;When laser generating system is to 10 fuse of silk material, change focused spot position, by bearing defocus Mode, increase laser facula covering silk material 10 end, laser contacts and melts with the end of silk material 10 and be stacked on SLM and be currently molded On layer;
Repeat step one and step 2, until completing the processing of whole workpiece, realize more Material claddings shaping of workpiece.
When silk material 10 described in above-mentioned steps two carries out fusion sediment step, pacify in advance according to label order in wire feeding head 4 Silk material is installed, and is heated to 800 DEG C;Moulding cylinder 1 declines the height (such as Fig. 2 b) of a thickness automatically;According to needed for label is selected Material silk material (is placed on the bottom of wire feeding head 4) in the selected silk material of the rotation in situ of wire feeding head 4, and along current shape layer upper table Face is carried out to silk, then the more material areas according to needed for path planning is moved to the current shape layer of wire feeding head 4, then, dynamic The mobile microscope group 6 of fine setting is focused on by the way of negative defocus, expansion facula area carries out radiation to the silk material of current shaping top and added Heat, and melt the designated area (such as Fig. 2 c) for being stacked on current shape layer;Until wire feeding head 4 in X/Y plane according to path planning The silk material fusing for completing whole current shape layer stacks operation;
After the designated area silk material fusing stacking operation for completing current shape layer, if need to be specified to the another of current shape layer When silk material fusing in region stacks, wire feeding head 4 is first moved to initial position, to silk, then XY spindle guides rail mechanism carries wire feeding head 4, complete current another designated area silk material fusing of shape layer according to path planning and stack operation (Fig. 2 d);So circulation, directly Operation is stacked to the silk material fusing for completing all designated areas of current layer;
After the silk material fusing stacking operation for completing all designated areas of current layer, wire feeding head 4 returns to initial position;Or into Type cylinder 1 declines height, the powdering of a thickness according to path planning automatically, powdering highly stacked higher than silk material fusing or and its Flush;Laser generator launches laser 13, and the dynamic focusing scanning galvanometer 8 is swept according to current data layer scanning pattern in computer Retouch, focus is in powdering layer, and (Fig. 2 f) is completed until current layer scans;
Such cycle alternation, so far complete more materials shaping of whole workpiece.
Laser 13 to avoid scanning galvanometer from launching interferes with wire feeding head 4, and multichannel wire feeder is total in vertical direction It is to tilt 45 °, before wire feeding head 4 is relevant with four points of quadrants where it is molded in XY directions, and wire feeding head 4 is always in path Side.Wire feeding head 4 is in path planning, it then follows same quadrant priority principle, it then follows by center to surrounding principle.
Wire feeding head 4 can rotate in the x, y direction, be adjusted to suitable angle.In each point of quadrant, wire feeding head 4 is therefrom The heart moves to surrounding, the front for making wire feeding head 4 be always positioned at path by ajusting angle.
After shaping terminates, wire feeding head 4 is kept in the center, pass hull closure, is taken out workpiece and is completed forming operation.
As described above, it can preferably realize the utility model.
Embodiment of the present utility model is simultaneously not restricted to the described embodiments, and other are any without departing from of the present utility model Spirit Essence with made under principle change, modification, replacement, combine, simplification, should be equivalent substitute mode, be included in Within the scope of protection of the utility model.

Claims (7)

1. a kind of fusing of selective laser and the compound more material shaped devices of wire feed, including can dynamic focusing laser generating system, Moulding cylinder (1);It is characterized in that:The selective laser, which is melted, also includes a transport silk material with the compound more material shaped devices of wire feed Wire feeder and XY spindle guide rail mechanisms;The wire feeding head (4) of XY spindle guides rail mechanism carrying wire feeder root on moulding cylinder (1) Moved according to path planning in XY direction of principal axis;
The laser generating system melts SLM and silk material (10) progress to wire feeding head (4) output as selective laser simultaneously The thermal source of fusion sediment;Laser generating system changes focal position by dynamic focusing and realizes silk material (10) and/or powder in work The melting of part forming area.
2. selective laser fusing and the compound more material shaped devices of wire feed according to claim 1, it is characterised in that the XY Spindle guide rail mechanism includes X-axis guide rail and Y-axis guide rail;Wire feeding head (4) is driven along X-axis guide rail rail by the motor of XY spindle guide rail mechanisms Mark is moved, and X-axis guide rail is moved along Y-axis guide rail track, and then realizes wire feeding head (4) above moulding cylinder (1) according to path planning Moved in XY direction of principal axis;Before each fusion sediment, i.e., the wire feeding head (4) is located at initial position before powdering and powder fusing operation, In order to avoid hinder powdering and powder selective melting operation.
3. selective laser fusing and the compound more material shaped devices of wire feed according to claim 2, it is characterised in that described to send Silk head (4) is multichannel wire feeding head or single channel wire feeding head;When using multichannel wire feeding head, the rear end of wire feeding head is placed with multiple fortune Send unlike material silk material (10) delivery pipe, the internal tapered structure of wire feeding head (4);The wire feeding head (4) has automatically to silk work( Can, it can be carried out every time before shaping along moulding cylinder horizontal plane to silk;Electro-heat equipment is carried on wire feeding head (4), for that will come from The silk material of delivery pipe is preheated to 600 DEG C~800 DEG C.
4. selective laser fusing and the compound more material shaped devices of wire feed according to claim 3, it is characterised in that described to send Silk head (4) relative to molding flat adjustable angle.
5. selective laser fusing and the compound more material shaped devices of wire feed according to claim 3, it is characterised in that described to send Silk head (4) is relative to molding flat in 45 ° of inclinations.
6. selective laser fusing and the compound more material shaped devices of wire feed, its feature according to any one of claim 1 to 5 It is, the laser generating system includes the laser generator (5) of light path connection, mobile microscope group (6), focusing lens (7) successively And scanning galvanometer (8), mobile microscope group (6) is finely tuned by dynamic focusing to change focal position.
7. selective laser fusing and the compound more material shaped devices of wire feed according to claim 6, it is characterised in that described to send Silk mechanism also includes several rollers for being used to wind unlike material silk material and the extruder (9) for drawing silk material.
CN201720392322.4U 2017-04-14 2017-04-14 A kind of selective laser fusing and the compound more material shaped devices of wire feed Active CN207205269U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106944622A (en) * 2017-04-14 2017-07-14 华南理工大学 A kind of selective laser fusing is combined many material shaped devices and forming method with wire feed
CN111992719A (en) * 2020-11-02 2020-11-27 西安欧中材料科技有限公司 Efficient additive manufacturing system and preparation method for steel-titanium composite material fuse wire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106944622A (en) * 2017-04-14 2017-07-14 华南理工大学 A kind of selective laser fusing is combined many material shaped devices and forming method with wire feed
CN111992719A (en) * 2020-11-02 2020-11-27 西安欧中材料科技有限公司 Efficient additive manufacturing system and preparation method for steel-titanium composite material fuse wire
CN111992719B (en) * 2020-11-02 2021-02-23 西安欧中材料科技有限公司 Efficient additive manufacturing system and preparation method for steel-titanium composite material fuse wire

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