CN204122756U - A kind of high-efficiency high-accuracy compound increases material manufacturing installation - Google Patents

A kind of high-efficiency high-accuracy compound increases material manufacturing installation Download PDF

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Publication number
CN204122756U
CN204122756U CN201420516347.7U CN201420516347U CN204122756U CN 204122756 U CN204122756 U CN 204122756U CN 201420516347 U CN201420516347 U CN 201420516347U CN 204122756 U CN204122756 U CN 204122756U
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electron
generating
laser
powder
workbench
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魏青松
史玉升
韩昌骏
李帅
唐萍
刘洁
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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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 efficient high-precision compound and increase material manufacturing installation, adopt laser beam and electron beam compound to realize.Device comprises bottom and comprises powder-laying roller, workbench, powder feeding cylinder and working cylinder; Top comprises electron beam generating apparatus, laser beam generating device, base plate, two guide rails, two crossbeams, synchronous pulley and servomotors.Electron beam generating apparatus, laser beam generating device, respectively as an entirety, alternately move in shaped region and scan.In the process of high energy beam and metal dust effect, the metal dust of laser beam flying melted surface profile, ensures that piece surface has good surface quality; Electron beam high speed melt powder inside formation of parts inner chamber, to reach the fastest forming efficiency.The utility model can improve the shortcoming that single forming technique exists, the object of Optimum Synthesis performance.

Description

A kind of high-efficiency high-accuracy compound increases material manufacturing installation
Technical field
The utility model belongs to advanced manufacturing technology field, for a kind of high-efficiency high-accuracy compound increases material manufacturing installation.
Background technology
High energy beam mainly comprises laser beam, electron beam and ion beam etc.High energy beam deposite metal powder manufacturing technology is the advanced technology that can realize nearly full compact metal parts increasing material and manufacture that developed recently gets up.The 3-D graphic making parts in a computer by drawing up is divided into a series of X-Y scheme thin slice, motion mode and the track of high energy beam is controlled again by computer, motion control card etc., produce the process such as phase transformation, fusing by high energy beam heating, successively manufacturing and superposing becomes final 3 d part.This technology overcomes the restriction of conventional fabrication processes, and whole process, without processing waste material, without the need to frock clamp and mould, directly can manufacture a product or mould, therefore be paid close attention to widely.
Can be shaped electron-beam melting (Electron Beam Melting, EBM) various metals material, has high vacuum to protect, and beam energy utilization rate is high, and sweep speed is fast, and can reach 8000m/s, forming efficiency is high.But the accuracy class of overseas equipment formation of parts is ± 0.3mm at present, and domestic equipment only has ± 1mm, and formation of parts precision is low; It spreads, and bisque is thick is not less than 0.06mm, and thickness is also the reason that part forming precision is low comparatively greatly.
Compared with EBM, in selective laser melting (Selective Laser Melting, SLM) forming process, laser beam spot diameter is little, and energy density is high, and the dimensional accuracy of formation of parts is high, and surface roughness is low.Current domestic equipment formation of parts accuracy class is ± 0.1mm, and forming accuracy is high; Paving bisque is thick is 0.02mm, and only have 1/3rd of EBM, thickness is little.But the sweep speed of SLM former is lower, maximum can only reach 70m/s abroad, domestic is then 1m/s, and forming speed is lower, longer to the curring time of heavy parts.Table 1 is the parameter comparison situation of two kinds of forming technologies.
Further raising high energy beam increases the range of application of material manufacturing technology, must overcome forming efficiency at present low, the difficulty of surface quality difference.In forming efficiency, mainly scan rate of vibrating mirror is improved for SLM technology, but galvanometer is mechanical part, by the impact of inertia, acceleration limiting, wants to increase substantially its sweep speed very difficult; And although EBM forming efficiency is high, surface quality and precision are but difficult to the object reaching near-net-shape.
Utility model content
For problems such as the forming efficiency solving above-mentioned single high energy beam increasing material manufacture existence are low, surface quality is poor, the high-efficiency high-accuracy that the utility model provides a kind of laser beam and electron beam compound increases material manufacturing installation, to playing the advantage of respective forming technique, improve the shortcoming that single forming technique exists, Optimum Synthesis performance.
A kind of compound that the utility model provides increases material manufacturing installation, and it is characterized in that, the bottom of this device mainly comprises powder-laying roller, workbench, powder feeding cylinder and working cylinder; Powder-laying roller is placed in the upper surface of workbench, is realized the mobile paving powder in X-Y plane by control system; Powder feeding cylinder and working cylinder unhinderedly can be moved up and down along Z-direction by control system, and the upper surface of two cylinders is no more than the upper surface of workbench;
The top of this device mainly comprises electron beam generating apparatus, laser beam generating device, base plate, two guide rails, two crossbeams, synchronous pulley and servomotors; Have rectangular window in the middle part of base plate, base plate is fixed described two guide rails, be parallel to a pair opposite side of window, a synchronous pulley and servomotor are fixed, Timing Belt and guide rail parallel respectively in described two guide rail sides, by synchronous pulley and servomotor tensioning; Two beam vertical, in guide rail, are coordinated with slide by slide block, and one end of two crossbeams is fixed on Timing Belt; Generating device of laser and electron beam generating apparatus are separately fixed on a crossbeam.
The utility model adopts two kinds of high energy beams to carry out the manufacture of compound increasing material, and especially the efficient high-precision increasing material of laser beam and electron beam compound manufactures.Both are organically combined, can shorten the part forming time, improve forming efficiency by the advantage that the utility model comprehensive utilization laser beam forming accuracy is high and electron beam forming speed is fast; Improve the precision and surface quality that adopt the single shaping of electron beam, improve the combination property of part.In a word, the utility model can shorten the part forming time, improves the surface quality of workpieces adopting the single shaping of electron beam, improves the combination property of part, can promote application and the popularization of the technology and equipment of metallic element Directly rapid fabrication.
Accompanying drawing explanation
Fig. 1 is the device schematic diagram of laser beam and the work of electron beam compound;
Fig. 2 is top integrated moveable mixed sweep device top view;
Fig. 3 is the utility model Prototyping Metal Parts model schematic;
Fig. 4 is laser beam and electron beam scanning area schematic.
Detailed description of the invention
Below in conjunction with accompanying drawing and example, detailed description of the invention of the present utility model is described further.It should be noted that at this, the explanation for these embodiments understands the utility model for helping, but does not form restriction of the present utility model.In addition, if below in described each embodiment of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.
The utility model device can utilize laser beam and electron beam compound to scan metal dust, to reach the object of high-efficiency high-accuracy.Laser beam mainly carries out scanning fusing to the metal dust of boundary profile, ensures that piece surface has good surface quality; Electron beam carries out high speed melt to powder inside, ensures higher forming efficiency.Both can carry out work simultaneously, also can periodically separately work in same process.
The utility model device is divided into two parts.Top is a kind of integrated moveable mixed sweep device, mechanical mechanism and two servomotors such as the generating means of two kinds of high energy beams, crossbeam and guide rail are specifically laid, high energy beam generating means is arranged on different crossbeam respectively, and servomotor drives synchronous pulley to make crossbeam complete accurate movement planar along two guide rails.Two high energy beam generating means are alternately mobile with the form of entirety, as required pre-heating powder, scanning drip molding.During shaping, under the control of control software design, electron beam realizes X respectively and controls to the deflection with Y-direction under the Magnetic control of magnetic deflection field.Laser beam is then under the accurate control of galvanometer, and effects on surface profile scans.Bottom is then shaping table top and formingspace, specifically lays Liao Pu powder mechanism, working cylinder and powder feeding cylinder.
General principle according to this utility model and working condition is described in detail below in conjunction with Fig. 1, Fig. 2.The utility model device is a kind of laser beam and electron beam compound molding device, and its underpart mainly comprises powder-laying roller 1, workbench 2, powder feeding cylinder 3 and working cylinder 4.Powder-laying roller 1 is placed in the upper surface of workbench 2, is realized the mobile paving powder in X-Y plane by control system.Powder feeding cylinder 3 and working cylinder 4 can unhinderedly be moved up and down by control system, and the upper surface of two cylinders can not exceed the upper surface of workbench 2.
Top mainly comprises the parts such as electron beam generating apparatus 7, laser beam generating device 8, base plate 9, guide rail 10, crossbeam 11, synchronous pulley 12 and servomotor 13.Have rectangular window in the middle part of base plate 9, base plate 9 is fixed two guide rails 10, be parallel to a pair opposite side of window, guide rail 10 side fixes a synchronous pulley 12 and servomotor 13 respectively, and Timing Belt is parallel with guide rail 10, by synchronous pulley 12 and servomotor 13 tensioning.Two crossbeams 11 are perpendicular to guide rail 10, and be slidably matched by slide block and guide rail 10, one end of crossbeam 11 is fixed on Timing Belt.Generating device of laser 8 and electron beam generating apparatus 7 are separately fixed on a crossbeam 11.
During the work of the utility model device, high energy beam 6 is produced by electron beam generating apparatus 7, above the central area moving to workbench 2 during duty.During shaped inner structure, electron beam generating apparatus 7 moves to shaped region and scans, and laser beam generating device 8 keeps original position; During profiled surface profile, electron beam generating apparatus 7 gets back to original position, and laser beam generating device 8 moves to shaped region and scans.In the process that metal dust is layered on working cylinder 4 equably, electron beam generating apparatus 7 and laser beam generating device 8 are all in closed condition.After often spreading one deck powder, electron beam generating apparatus 7 is launched little line 6 pairs of metal dusts 5 and is carried out preheating, and the metal dust 5 that the high energy laser beam 6 that laser beam generating device 8 is launched afterwards is irradiated to the surface profile that part is specified melts.When the bisque thick EBM reaching setting in pawnshop scans the thickness of individual layer powder, the electron beam 6 launched by electron beam generating apparatus 7 is started working, and scans the internal structure of specifying.
The detailed process utilizing the utility model device to carry out increasing material manufacture is:
(1) Region dividing is carried out to the surface profile of formation of parts model and internal structure, control the scope of electron beam and working laser beam;
(2) thickness that the paving bisque of setting device is thick, SLM scans individual layer powder and EBM scan the thickness of individual layer powder.The formingspace of device is evacuated, and passes into protective gas;
(3) to be tiled on metallic substrates one deck powder by Pu Fen mechanism, utilize the little line of electron beam to carry out high-velocity scanning, pre-heating powder to the thin layer powder in setting regions;
(4) control laser beam generating device and move to scanning window, the powder in laser beam flying setting regions, form surface profile layer, electron beam generating apparatus keeps initial position motionless.
(5) above-mentioned steps (3) ~ (4) are repeated, until after Pu Fen mechanism spread powder, the EBM just making the bisque of internal structure reach setting scans the thickness of individual layer powder, electron beam generating apparatus setting in motion is to scanning window, electron beam scanning inner structural region, simultaneously laser beam flying surface profile region.After laser beam flying completes, electron beam just carries out remelting to the border in two regions, and remelting peak width is approximately 0.1mm, makes two regions be combined into entirety.
(6) above-mentioned steps (5) is repeated, until the powder in manufacturing direction in inner structural region has scanned.
(7) repave one deck powder and preheating, laser beam starts the surface profile scanning part top, and the border in above-mentioned two regions of remelting, makes them combine simultaneously.Repeat to spread powder scanning until the surface profile (as being highly 0.5mm) on part top machines.
In said process, laser spot diameter scope is 0.05mm-0.1mm, and the diameter of electron beam hot spot is 0.1mm.Due to the difference of accessory size and required precision, the thick and size that is piece surface profile of the paving bisque of device setting can adjust, and the thickness of surface profile should be not less than 0.5mm.Prototyping Metal Parts model as shown in Figure 3, its laser beam and electron beam scanning region are as shown in Figure 4.
The above is preferred embodiment of the present utility model, but the utility model should not be confined to the content disclosed in this embodiment and accompanying drawing.The equivalence completed under not departing from spirit disclosed in the utility model so every or amendment, all fall into the scope of the utility model protection.
The parameter comparison of table 1EBM and SLM

Claims (1)

1. compound increases a material manufacturing installation, and it is characterized in that, the bottom of this device mainly comprises powder-laying roller, workbench, powder feeding cylinder and working cylinder; Powder-laying roller is placed in the upper surface of workbench, is realized the mobile paving powder in X-Y plane by control system; Powder feeding cylinder and working cylinder can unhinderedly be moved up and down by control system, and the upper surface of two cylinders is no more than the upper surface of workbench;
The top of this device mainly comprises electron beam generating apparatus, laser beam generating device, base plate, two guide rails, two crossbeams, synchronous pulley and servomotors; Have rectangular window in the middle part of base plate, base plate is fixed described two guide rails, be parallel to a pair opposite side of window, a synchronous pulley and servomotor are fixed, Timing Belt and guide rail parallel respectively in described two guide rail sides, by synchronous pulley and servomotor tensioning; Two beam vertical, in guide rail, are coordinated with slide by slide block, and one end of two crossbeams is fixed on Timing Belt; Generating device of laser and electron beam generating apparatus are separately fixed on a crossbeam.
CN201420516347.7U 2014-09-09 2014-09-09 A kind of high-efficiency high-accuracy compound increases material manufacturing installation Active CN204122756U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104190931A (en) * 2014-09-09 2014-12-10 华中科技大学 Method and device for manufacturing efficient and high-precision composite additive
CN104801712A (en) * 2015-04-22 2015-07-29 华南理工大学 Laser and microbeam plasma composite 3D (3-dimensional) printing equipment and method
EP3269473A4 (en) * 2015-03-10 2018-10-31 Tsinghua University Additive manufacturing device utilizing eb-laser composite scan
US10744562B2 (en) 2016-01-25 2020-08-18 General Electric Company Additive manufacturing employing a plurality of electron beam sources

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104190931A (en) * 2014-09-09 2014-12-10 华中科技大学 Method and device for manufacturing efficient and high-precision composite additive
CN104190931B (en) * 2014-09-09 2016-10-05 华中科技大学 A kind of high-efficiency high-accuracy composite wood manufacture method and device
EP3269473A4 (en) * 2015-03-10 2018-10-31 Tsinghua University Additive manufacturing device utilizing eb-laser composite scan
CN104801712A (en) * 2015-04-22 2015-07-29 华南理工大学 Laser and microbeam plasma composite 3D (3-dimensional) printing equipment and method
US10744562B2 (en) 2016-01-25 2020-08-18 General Electric Company Additive manufacturing employing a plurality of electron beam sources

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