CN2761319Y - Fast shaping system for direct manufacturing metal parts - Google Patents

Fast shaping system for direct manufacturing metal parts Download PDF

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Publication number
CN2761319Y
CN2761319Y CN 200420057780 CN200420057780U CN2761319Y CN 2761319 Y CN2761319 Y CN 2761319Y CN 200420057780 CN200420057780 CN 200420057780 CN 200420057780 U CN200420057780 U CN 200420057780U CN 2761319 Y CN2761319 Y CN 2761319Y
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CN
China
Prior art keywords
powder
laser
guide rail
metal parts
axis guide
Prior art date
Application number
CN 200420057780
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Chinese (zh)
Inventor
黄树槐
史玉升
陈国清
鲁中良
Original Assignee
华中科技大学
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Application filed by 华中科技大学 filed Critical 华中科技大学
Priority to CN 200420057780 priority Critical patent/CN2761319Y/en
Application granted granted Critical
Publication of CN2761319Y publication Critical patent/CN2761319Y/en

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Abstract

The utility model discloses a quick shaping system for directly manufacturing metal parts. Both sides of an air shield cavity of the utility model are provided with an air inlet and an air outlet, and upper sides of both ends are provided with a left powder falling device and a right powder falling device provided with metal powder. The powder spraying of the powder falling device is controlled by a motor, and a powder outlet thereof is communicated with the left powder falling device and the right powder falling device. A scraping plate is positioned in the air shield cavity and is controlled by the motor to do the bidirectional movement along the horizontal direction. A laser scanner is positioned between the left powder falling device and the right powder falling device, and the top of the air shield cavity is provided with a laser window. The bottom of the air shield cavity is provided with a working chamber, and the inside of the working chamber is provided with a piston which is controlled by the motor to do the up-and-down movement. Light beams sent by the laser scanner are focused on powder to be processed of the upper surface of the piston through the laser window. The utility model can directly manufacture the metal parts with any complicated shapes, and the metal parts have good mechanical properties of high density, high strength, high precision, etc. The utility model has the characteristics of quick manufacturing speed and low manufacturing cost.

Description

A kind of rapid forming system of direct manufacturing metal parts
Technical field
The utility model belongs to quick manufacturing field, is specifically related to a kind of rapid forming system of direct manufacturing metal parts.
Background technology
Facts have proved that it is effective adopting RP technique to make the macromolecule part, but being used to make metal parts then exists many technical difficulties.Although some quick forming method can directly be made metal parts at present, but more be to obtain by indirect method.For example: selective laser sintering (Selective Laser Sintering, SLS) method---make metal parts by choosing refractory metal dusty material and low melting point powder material, the metal dust that is about to two kinds of different melting points mixes or certain binding agent of interpolation in metal dust, with less laser power (generally below 100W) melt portions low-melting-point metal powder or binding agent, unfused metal dust forms crude green body around the dusty material bonding of fusing, and then base substrate is carried out post processings formation metal parts such as high-temperature roasting, metallic cementation.Adopt existing method to make complicated metal parts fast, a series of problem such as have that density is low, mechanical performance is relatively poor, cost of manufacture is high, manufacturing process is complicated and fabrication cycle is long.In order to address these problems, selective laser fusing (Selective Laser Melting, the SLM) method that directly to make the high-compactness metal parts have been worked out at present.
The Fraunhofer institute of Germany has just worked out the SLM technology, present German MCP company and F﹠amp in 2002; S company is at production and selling SLM machine, and this equipment that they make all can directly be made metal parts, does not need subsequent treatment such as metallic cementation, and to obtain compactness be 100% workpiece.But what take in the equipment that they make is the mirror-vibrating laser scanning system, per hour can only produce 5cm 2Metal parts, production efficiency is lower; And the machine volume that they make is also bigger, and price is higher.
At present, the domestic report that does not also have the SLM rapid forming system.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, and a kind of rapid forming system of direct manufacturing metal parts is provided.Adopt the utility model can directly produce metal parts any complicated shape, that have good mechanical properties such as high-compactness, high strength and high accuracy.In addition, adopt rapid forming system of the present utility model, can accelerate the manufacturing speed of metal parts, reduce cost of manufacture.
The rapid forming system of a kind of direct manufacturing metal parts that the utility model provides, comprise processing space and laser scanning device, it is characterized in that: the both sides in gas shield chamber are provided with inlet, outlet, it is provided with the left and right powder discharging device that is used for the splendid attire metal dust above two ends, powder discharging device is by its powder delivery of Electric Machine Control, and its meal outlet communicates with left and right powder discharging device; Scraper plate is positioned at the gas shield chamber, makes bidirectional-movement by the Electric Machine Control along continuous straight runs; Laser scanning device is between the left and right powder that falls is put; top in the gas shield chamber is provided with laser window; bottom in the gas shield chamber is provided with working chamber; be provided with the piston by its upper and lower motion of Electric Machine Control in the working chamber, the light beam that laser scanning device sends focuses on the metal powder to be processed of piston upper surface by laser window.
The utility model can directly produce the metal parts of good mechanical properties such as the high density, high strength, high accuracy of any complicated shape.In addition, adopt rapid forming system of the present utility model, can accelerate the manufacturing speed of metal parts, reduce cost of manufacture, economize on the use of funds.Native system is fit to directly make the high desnity metal part.
Description of drawings
Fig. 1 is the structural representation of the utility model SLM rapid forming system.
Fig. 2 is the structural representation of a kind of specific embodiment of powder discharging device among Fig. 1.
Fig. 3 is the structural representation of a kind of specific embodiment of laser scanning device among Fig. 1.
Fig. 4 is the control flow chart of SLM rapid forming system.
The specific embodiment
Below in conjunction with accompanying drawing and example the utility model is described in further detail.
As shown in Figure 1, in the utility model SLM rapid forming system, processing space 9 is made up of left and right powder discharging device 10,11, laser window 13, scraper plate 15, piston 18, gas shield chamber 19, working chamber 20 and laser scanning device 21.Metal dust is equipped with in left and right powder discharging device 10 and 11 inside, and its meal outlet communicates with gas shield chamber 19.As shown in Figure 2, be provided with the impeller 22 of band blade 23 in the left and right powder discharging device 10 or 11, by the rotation of step motor control impeller, when two blades forwarded the exit position to, powder fell into gas shield chamber 19 automatically.Scraper plate 15 is positioned at 19 the insides, gas shield chamber, spreads powder by common electric machine control scraper plate 15 along continuous straight runs of Frequency Converter Control as bidirectional-movement.From left powder discharging device 10 to right powder discharging device 11 or right powder discharging device 11 once spread powder one deck to left powder discharging device 10 every motions; Laser scanning device 21 has a laser window 13 at the top in gas shield chamber 19 between left and right powder discharging device 10 and 11.Be provided with working chamber 20 in the bottom in gas shield chamber 19, be provided with piston 18 in its working chamber 20, piston 18 is vertically moved up and down by independent step motor control.The laser beam that laser scanning device 21 sends acts on the powder to be processed on piston 18 upper surfaces by laser window 13, and protective gas enters from air inlet 12 in the course of work, and 14 discharge from the gas outlet.Whenever process one deck, the distance of piston 18 declines one layer thickness, among the figure, the part workpiece that 16 expressions have been processed; The unnecessary metal dust of 17 expressions.
As shown in Figure 3, above-mentioned laser scanning device 21 is made of X-axis guide rail 1, Y-axis guide rail 2, polariscope 4 and 7, slide block 5, focus lamp 6.X-axis guide rail 1 and Y-axis guide rail 2 are made of screw mandrel, but Y-axis guide rail 2 along continuous straight runs under the control of servomotor is made bidirectional-movement, and X-axis guide rail 1 can be made bidirectional-movement along vertical Y axis rail 2 on horizontal plane under another servomotor control.Slide block 5 can be made bidirectional-movement by screw mandrel on Y-axis guide rail 2, focus lamp 6 and following polariscope 4 are fixed on the slide block 5, and last polariscope 7 is fixed on the upper end of Y-axis guide rail 2.The light beam 8 that laser instrument sends after focus lamp 6 focusing, focuses on the metal dust to be processed that is positioned at piston 18 upper surfaces by laser window 13 after changing traffic directions through last polariscope 7 and following polariscope 4.
The control flow chart of above-mentioned rapid forming system as shown in Figure 4.At first metal dust is preheating to uniform temperature by preheating device; Secondly by the fall metal dust of powder mechanism layer overlay predetermined thickness on processing platform of computer control; Design the solid modelling of metal parts at last with 3D sculpting softwares such as Pro/Engineer, Unigraphic, save as stl file after handling through section software then, the data message of stl file is transported in the SLM rapid forming system machine, under the laser scanning system of drawing ceremony X-Y axle scan mode, by of the track while scan operation of computer control laser according to design, the deposite metal powder is made layer by layer.Because when the system of the ceremony X-Y axle scan mode of taking to draw, laser is stabilized in a concrete numerical value through focusing on the back apart from processing platform, so spot size can not change, laser energy density is stable, guarantees machining accuracy easily; In addition, the hot spot after focusing in the 2-D vibration mirror formula laser scanning system becomes increasing to distal movement more, causes laser energy density to reduce gradually, if do not take indemnifying measure, possiblely will cause slowing down of the lower and process velocity of metal parts precision.Therefore, in order to improve process velocity and to obtain higher metal parts precision, in this rapid forming system, we have taked the laser scanning system of drawing ceremony X-Y axle scan mode.Simultaneously, the power spreading device of fall on we have taked powder mechanism and scraper plate combination, processing space is positioned at wherein, and this makes processing space compact more, has reduced the consumption of protective gas simultaneously, has saved cost.

Claims (3)

1, a kind of rapid forming system of direct manufacturing metal parts, comprise processing space and laser scanning device, it is characterized in that: the both sides of gas shield chamber (19) are provided with inlet, outlet (12,14), it is provided with the left and right powder discharging device (10 and 11) that is used to install metal dust above two ends, powder discharging device is by its powder delivery of Electric Machine Control, and its meal outlet communicates with left and right powder discharging device (10 and 11); Scraper plate (15) is positioned at gas shield chamber (19), makes bidirectional-movement by the Electric Machine Control along continuous straight runs; Laser scanning device (21) is positioned at the left and right powder that falls and puts between (10 and 11); be provided with laser window (13) at the top of gas shield chamber (19); be provided with working chamber (20) in the bottom of gas shield chamber (19); be provided with the piston (18) by its vertical motion of Electric Machine Control in the working chamber (20), the light beam that laser scanning device (21) sends focuses on the powder to be processed of piston (18) upper surface by laser window (13).
2, system according to claim 1, it is characterized in that: the structure of described laser scanning device (21) is: X-axis guide rail (1) and Y-axis guide rail (2) are made of screw mandrel, but the former is by servomotor control along continuous straight runs motion down, down in horizontal plane upper edge movement in vertical direction, slide block (5) is positioned at Y-axis guide rail (2) and upward and along the Y-axis guide rail slides the latter by another servomotor control; Focus lamp (6) and following polariscope (4) are fixed on the slide block (5), last polariscope (7) is fixed on the upper end of Y-axis guide rail (2), after the light beam (8) that is sent by laser instrument passes through last polariscope (7) and following polariscope (4) successively and changes traffic direction, pass through focus lamp (6) again and focus on, be radiated on the metal dust to be processed that is positioned at piston (18) upper surface by working window (13) again.
3, system according to claim 1 and 2 is characterized in that: for the impeller (22) of band blade (23), by the rotation of Electric Machine Control impeller, make powder fall into gas shield chamber (19) in the described left and right powder discharging device (10 and 11).
CN 200420057780 2004-12-15 2004-12-15 Fast shaping system for direct manufacturing metal parts CN2761319Y (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1295051C (en) * 2004-12-15 2007-01-17 华中科技大学 Rapid forming system for direct manufacturing metal parts
CN101856724A (en) * 2010-06-13 2010-10-13 华南理工大学 Selective laser melting forming device and method of medical magnesium alloy metal part
CN101479064B (en) * 2006-07-27 2011-08-31 阿卡姆股份公司 Method and device for producing three-dimensional objects
CN102442546A (en) * 2011-09-09 2012-05-09 西北有色金属研究院 Powder spreading device for rapid forming equipment
CN101112798B (en) * 2007-08-22 2012-06-13 姚福来 Arrangement for quickly flattening hard flow materials
CN103084573A (en) * 2011-11-04 2013-05-08 阿尔斯通技术有限公司 Process for production of articles made of gamma-prime precipitation-strengthened nickel-base superalloy by selective laser melting (SLM)
CN103952698A (en) * 2014-05-09 2014-07-30 张百成 Integrated device of selective laser melting powder spreading and atmosphere cyclic protection
CN104284746A (en) * 2012-02-23 2015-01-14 诺沃皮尼奥内股份有限公司 Turbo-machine impeller manufacturing
CN103203664B (en) * 2013-04-11 2015-07-29 温州大学 A kind of endoporus finishing method of selective laser melting Prototyping Metal Parts
CN105328913A (en) * 2015-11-30 2016-02-17 天津清研智束科技有限公司 Powder laying device and additive manufacturing device
CN106041073A (en) * 2016-06-03 2016-10-26 施卫东 Metal additive manufacturing method and device adopting plasma beam deposition direct shaping
CN108515182A (en) * 2013-02-14 2018-09-11 瑞尼斯豪公司 Selective laser curing apparatus and method

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1295051C (en) * 2004-12-15 2007-01-17 华中科技大学 Rapid forming system for direct manufacturing metal parts
CN101479064B (en) * 2006-07-27 2011-08-31 阿卡姆股份公司 Method and device for producing three-dimensional objects
CN101112798B (en) * 2007-08-22 2012-06-13 姚福来 Arrangement for quickly flattening hard flow materials
CN101856724A (en) * 2010-06-13 2010-10-13 华南理工大学 Selective laser melting forming device and method of medical magnesium alloy metal part
CN101856724B (en) * 2010-06-13 2012-07-18 华南理工大学 Selective laser melting forming device and method of medical magnesium alloy metal part
CN102442546A (en) * 2011-09-09 2012-05-09 西北有色金属研究院 Powder spreading device for rapid forming equipment
CN103084573B (en) * 2011-11-04 2015-10-21 阿尔斯通技术有限公司 The process of the article be made up of γ ' precipitation strength nickel based super alloy is produced by SLM
CN103084573A (en) * 2011-11-04 2013-05-08 阿尔斯通技术有限公司 Process for production of articles made of gamma-prime precipitation-strengthened nickel-base superalloy by selective laser melting (SLM)
US9844812B2 (en) 2011-11-04 2017-12-19 Ansaldo Energia Ip Uk Limited Process for the production of articles made of a gamma-prime precipitation-strengthened nickel-base superalloy by selective laser melting (SLM)
US9903207B2 (en) 2012-02-23 2018-02-27 Nuovo Pignone Srl Turbo-machine impeller manufacturing
CN104284746A (en) * 2012-02-23 2015-01-14 诺沃皮尼奥内股份有限公司 Turbo-machine impeller manufacturing
CN108515182A (en) * 2013-02-14 2018-09-11 瑞尼斯豪公司 Selective laser curing apparatus and method
CN103203664B (en) * 2013-04-11 2015-07-29 温州大学 A kind of endoporus finishing method of selective laser melting Prototyping Metal Parts
CN103952698B (en) * 2014-05-09 2016-02-24 张百成 A kind of selective laser melting paving powder and atmosphere recycling-guard integrated apparatus
CN103952698A (en) * 2014-05-09 2014-07-30 张百成 Integrated device of selective laser melting powder spreading and atmosphere cyclic protection
CN105328913A (en) * 2015-11-30 2016-02-17 天津清研智束科技有限公司 Powder laying device and additive manufacturing device
CN106041073A (en) * 2016-06-03 2016-10-26 施卫东 Metal additive manufacturing method and device adopting plasma beam deposition direct shaping

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C25 Abandonment of patent right or utility model to avoid double patenting
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Effective date of abandoning: 20041215