CN106393683A - 3D printer with laser heating function - Google Patents

3D printer with laser heating function Download PDF

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Publication number
CN106393683A
CN106393683A CN201611164990.8A CN201611164990A CN106393683A CN 106393683 A CN106393683 A CN 106393683A CN 201611164990 A CN201611164990 A CN 201611164990A CN 106393683 A CN106393683 A CN 106393683A
Authority
CN
China
Prior art keywords
laser
heating
bundle
printer
light combination
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611164990.8A
Other languages
Chinese (zh)
Inventor
李全贵
普雄鹰
袁晓鑫
王林
马桂殿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING LONGYUAN AUTOMATIC MOLDING SYSTEM Co Ltd
Original Assignee
BEIJING LONGYUAN AUTOMATIC MOLDING SYSTEM Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BEIJING LONGYUAN AUTOMATIC MOLDING SYSTEM Co Ltd filed Critical BEIJING LONGYUAN AUTOMATIC MOLDING SYSTEM Co Ltd
Priority to CN201611164990.8A priority Critical patent/CN106393683A/en
Publication of CN106393683A publication Critical patent/CN106393683A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/36—Process control of energy beam parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/10—Auxiliary heating means
    • B22F12/17—Auxiliary heating means to heat the build chamber or platform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/40—Radiation means
    • B22F12/44—Radiation means characterised by the configuration of the radiation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/40—Radiation means
    • B22F12/44—Radiation means characterised by the configuration of the radiation means
    • B22F12/45—Two or more
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/40—Radiation means
    • B22F12/49—Scanners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Automation & Control Theory (AREA)
  • Ceramic Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention provides a 3D printer with the laser heating function. The printer is characterized in that two laser beams exist in a laser scanning system, one beam is a machining laser beam a, the other beam is a heating laser beam b, the machining laser beam a and the heating laser beam b are combined through a beam combiner (15), are jointly shot into a light inlet hole of a scanning galvanometer (10), and are both focused on a work table powder surface, powder heating and sintering machining of the cross section of a product is achieved through the scanning galvanometer, local high-temperature heating of the laser machining position is achieved layer by layer, machining is carried out while heating is carried out, product heat stress and heat deformation are greatly reduced, and product cracking is removed; gas residue between powder is reduced, and the aims that product precision is improved, the product surface quality is improved, and the product material mechanical performance is improved are achieved.

Description

3D printer with LASER HEATING
Technical field
The present invention relates to a kind of 3D printer with LASER HEATING, belong to material increasing field.
Background technology
3D printing technique obtains that people are extensively cognitive and fast-developing recently, and wherein powder precinct laser sintering technology is mesh Front with fastest developing speed, most active forming technique, the material that current powder precinct laser sintering technology is available for printing has PS powder, Buddhist nun Dragon, resin sand, various metal powder, ceramics, various covered composite yarn powder etc..In process, in order to reduce the course of processing Middle thermal stress and thermal deformation, reduce or eliminate cracking, in order that product obtains required tissue and performance, need to institute's powdering end Heated, usual mode of heating has：By heating devices heat above work top, heated by substrate, but heating-up temperature Generally individually relatively low, in 200 DEG C, we previously describe one kind laser preheated metallic powder in patent CN105880591A Method and device can be heated to very high, this kind of method, as using separate unit laser instrument separate unit scanning galvanometer, need to scan twice, plus The work process time will lengthen, and such as according to two scanning galvanometers of two laser instrument, then equipment cost increases a lot, if improve existing LASER HEATING is realized in the case of being not added with the long process time, improve production efficiency, reduce equipment cost, easy to crack new to some Material (as ceramic material) is developed, and will exert far reaching influence.
Content of the invention
It is an object of the invention to provide a kind of 3D printer with LASER HEATING, this 3D printer can be by processing Laser is realized successively heating, and is to heat to process simultaneously simultaneously, to product thermal stress and thermal deformation are greatly reduced, reduce or Eliminate cracking, reduce gas residue between powder, thus reaching the purpose improving part accuracy, surface quality and mechanical performance.
The above-mentioned purpose of the present invention is realized in：There is provided a kind of 3D printer with LASER HEATING, it includes machine Heater above frame 1, moulding cylinder 2, feeding system 13, power spreading device 11, doffer 6, laser scanning system, work top 18 or substrate heating equipment 4 it is characterised in that：Have two laser in described laser scanning system, a branch of for process laser beam A, a branch of for heating laser bundle b, process laser beam a and heating laser bundle b and converge through light combination mirror 15, inject scanning galvanometer 10 together Incidence hole, and all focus on workbench powder surface, realized in the heating of product section powder and sintering processing by scanning galvanometer.
The laser spot diameter that described processing laser beam a focuses on workbench powder surface is tiny, and heating laser bundle b focuses on Thick in the laser spot diameter on workbench powder surface.
Described processing laser beam a is launched by a laser instrument 8a, and heating laser bundle b is launched by another laser instrument 8b, Two-laser transmitting laser all expand through respective beam expanding lens after directive light combination mirror 15, and directive light combination mirror 15 two bundle laser light Spot diameter is of different sizes.
Described processing laser beam a and heating laser bundle b is produced by same laser instrument, and the laser of this laser instrument transmitting is penetrated Enter spectroscope 16, be divided into two bundle laser, directive light combination mirror 15 after wherein beam of laser expands through beam expanding lens 9a, another beam of laser warp Reflecting mirror 17a and reflecting mirror 17b, beam expanding lens 9b expand after also directive light combination mirror 15, two bundle laser converge through light combination mirror 15, and one Rise and inject scanning galvanometer 10 incidence hole, two bundle laser spot diameter of wherein directive light combination mirror 15 are of different sizes.
It is to heat by control laser output power size, by control that the regulation of described LASER HEATING temperature controls The laser spot diameter size on workbench powder surface for the laser beam focus, realized by controlling scanning galvanometer scanning speed size 's.
The 3D printer with LASER HEATING of the present invention, has following beneficial effect：
The 3D printer of LASER HEATING should be carried, can achieve the localized hyperthermia's heating successively at Laser Processing, and be same Shi Jiare processes simultaneously, and product thermal stress and thermal deformation are not only greatly reduced, and eliminates cracking, reduces gas residue between powder, control The organizational structure of prepared material and performance, are also greatly improved production efficiency, thus reaching raising part accuracy, improve article surface matter Amount, improves the purpose of the product mechanical property of materials.
To the present invention, the 3D printer with LASER HEATING is described further with reference to the accompanying drawings and examples.
Brief description
Fig. 1 is the 3D printer embodiment schematic diagram with heater above work top and substrate heating；
Fig. 2 is the 3D printer embodiment light path schematic diagram with one scanning galvanometer of two laser instrument；
Fig. 3 is the 3D printer embodiment light path schematic diagram with one scanning galvanometer of a laser instrument；
Wherein：
1- frame；2- moulding cylinder；3- moulding cylinder piston；4- substrate heating equipment；
5- substrate；6- doffer；7- processes product；8a- laser instrument a；
9a- beam expanding lens a；10- scanning galvanometer；8b- laser instrument b；9b- beam expanding lens b；
11- power spreading device；12- work top；13- feeding device；15- light combination mirror；
16- spectroscope；17a- reflecting mirror a；17b- the second reflecting mirror b；
Heater above 18- work top；A- laser beam a；B- laser beam b；
Specific embodiment
With reference to shown in Fig. 1, the 3D printer with heater above work top be existing processing PS powder, resin sand, The 3D printer of the materials such as nylon, the 3D printer with substrate heating is the metal dusts such as existing processing aluminium alloy, titanium alloy The 3D printer of material.
With reference to shown in Fig. 2, this embodiment is that two laser instrument produce two bundle laser, and laser beam a is by a laser instrument for processing 8a launches, and heating laser bundle b is launched by another laser instrument 8b, after the laser of two-laser transmitting all expands through respective beam expanding lens Directive light combination mirror 15, converges through light combination mirror 15, injects scanning galvanometer 10 incidence hole together, and this two bundles laser focuses in work top For two diameter difference hot spots, heating laser bundle focal beam spot is relatively large in diameter, and processes laser beam focus spot diameter tiny, in scanning Galvanometer along product cross section profile scanning filling process while, the heating laser of focusing is also carried out to dusty material at processing simultaneously Heating, the regulation of heating-up temperature can control two laser output powers, heating laser bundle spot diameter and scanning by adjusting Speed is realizing.
With reference to shown in Fig. 3, this embodiment is the laser that a laser instrument produces, and by spectroscope 16, is divided into two bundle laser, Directive light combination mirror 15 after wherein beam of laser expands through beam expanding lens 9a, the reflected mirror 17a of another beam of laser and reflecting mirror 17b, expansion Bundle mirror 9b expand after also directive light combination mirror 15, two bundle laser converge through light combination mirror 15, and inject scanning galvanometer 10 incidence hole together, Two bundle laser are focused to two diameter difference hot spots in work top, and heating laser bundle focal beam spot is relatively large in diameter, and processes laser beam Focal beam spot diameter is tiny, while scanning galvanometer is processed along product cross section profile scanning filling, the heating laser of focusing Dusty material at processing is heated simultaneously, realize heating processing simultaneously simultaneously.
Above-described is only the preferred embodiments of the present invention.It should be pointed out that coming for those of ordinary skill in the art Say, on the premise of without departing from the principle of the invention and core concept, some deformation can also be made and improve, be also considered as belonging to this The protection domain of invention.

Claims (5)

1. a kind of 3D printer with LASER HEATING, it includes frame (1), moulding cylinder (2), feeding system (13), powdering dress Put (11), doffer (6), laser scanning system, heater (18) or substrate heating equipment (4) above work top, its It is characterised by：Have two laser in described laser scanning system, a branch of for processing laser beam (a), a branch of for heating laser bundle B (), processing laser beam (a) and heating laser bundle (b) converge through light combination mirror (15), inject scanning galvanometer (10) incidence hole together, And all focus on workbench powder surface, realized in the heating of product section powder and sintering processing by scanning galvanometer.
2. the 3D printer with LASER HEATING according to claim 1 it is characterised in that：Described processing laser beam A laser spot diameter that () focuses on workbench powder surface is tiny, and heating laser bundle (b) focuses on the laser on workbench powder surface Spot diameter is thick.
3. the 3D printer with LASER HEATING according to claim 1 it is characterised in that：Described processing laser beam A () is launched by a laser instrument (8a), heating laser bundle (b) is launched by another laser instrument (8b), and what two-laser was launched swashs Light all expand through respective beam expanding lens after directive light combination mirror (15), and directive light combination mirror (15) two bundle laser spot diameter sizes not With.
4. the 3D printer with LASER HEATING according to claim 1 it is characterised in that：Described processing laser beam A () and heating laser bundle (b) are produced by same laser instrument, the laser of this laser instrument transmitting injects spectroscope (16), is divided into two Shu Jiguang, wherein beam of laser expand through beam expanding lens (9a) after directive light combination mirror (15), the reflected mirror of another beam of laser (17a, 17b), also directive light combination mirror (15) after beam expanding lens (9b) expands, two bundle laser converge through light combination mirror (15), and inject scanning together Two bundle laser spot diameter of galvanometer (10) incidence hole, wherein directive light combination mirror (15) are of different sizes.
5. the 3D printer with LASER HEATING according to claim 1 it is characterised in that：Described LASER HEATING temperature Adjust control be by control laser output power size, by control heating laser bundle focus on workbench powder surface Laser spot diameter size, realized by controlling scanning galvanometer scanning speed size.
CN201611164990.8A 2016-12-16 2016-12-16 3D printer with laser heating function Pending CN106393683A (en)

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Application Number Priority Date Filing Date Title
CN201611164990.8A CN106393683A (en) 2016-12-16 2016-12-16 3D printer with laser heating function

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Application Number Priority Date Filing Date Title
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108405860A (en) * 2018-05-17 2018-08-17 中国兵器装备研究院 A kind of dual-beam increasing material manufacturing method and apparatus
CN108994452A (en) * 2018-07-12 2018-12-14 上海航天设备制造总厂有限公司 A kind of multiple beam processes light path system and its method with optical axis
WO2019024077A1 (en) * 2017-08-04 2019-02-07 吴江中瑞机电科技有限公司 Powder sintering 3d printing system and powder supply method thereof
WO2019109203A1 (en) * 2017-12-04 2019-06-13 东莞远铸智能科技有限公司 Heat treatment method for 3d printed workpiece
CN110039047A (en) * 2018-01-13 2019-07-23 西安增材制造国家研究院有限公司 Metal powder laser melts increasing material manufacturing device and its manufacturing process
CN111730861A (en) * 2020-06-30 2020-10-02 北京闻亭泰科技术发展有限公司 3D prints laser processing module based on digital light processing
CN112719304A (en) * 2020-12-29 2021-04-30 武汉惟景三维科技有限公司 Preheating device for selective laser sintering
US20210197281A1 (en) * 2018-11-29 2021-07-01 Hitachi Metals, Ltd. Manufacturing method for additively manufactured body and manufacturing device for additively manufactured body
CN113182533A (en) * 2021-03-19 2021-07-30 中国科学院福建物质结构研究所 Laser heating 3D printing system and control method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104190928A (en) * 2014-08-18 2014-12-10 中国科学院重庆绿色智能技术研究院 Multi-wavelength laser area selection quick forming system and method
CN105764673A (en) * 2013-08-23 2016-07-13 Fit股份公司 Device for producing three-dimensional objects
CN105880591A (en) * 2016-05-10 2016-08-24 北京隆源自动成型系统有限公司 Selective laser forming metal powder preheating method and device
CN206551490U (en) * 2016-12-16 2017-10-13 北京隆源自动成型系统有限公司 The 3D printer heated with laser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105764673A (en) * 2013-08-23 2016-07-13 Fit股份公司 Device for producing three-dimensional objects
CN104190928A (en) * 2014-08-18 2014-12-10 中国科学院重庆绿色智能技术研究院 Multi-wavelength laser area selection quick forming system and method
CN105880591A (en) * 2016-05-10 2016-08-24 北京隆源自动成型系统有限公司 Selective laser forming metal powder preheating method and device
CN206551490U (en) * 2016-12-16 2017-10-13 北京隆源自动成型系统有限公司 The 3D printer heated with laser

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019024077A1 (en) * 2017-08-04 2019-02-07 吴江中瑞机电科技有限公司 Powder sintering 3d printing system and powder supply method thereof
WO2019109203A1 (en) * 2017-12-04 2019-06-13 东莞远铸智能科技有限公司 Heat treatment method for 3d printed workpiece
CN110039047A (en) * 2018-01-13 2019-07-23 西安增材制造国家研究院有限公司 Metal powder laser melts increasing material manufacturing device and its manufacturing process
CN108405860A (en) * 2018-05-17 2018-08-17 中国兵器装备研究院 A kind of dual-beam increasing material manufacturing method and apparatus
CN108994452A (en) * 2018-07-12 2018-12-14 上海航天设备制造总厂有限公司 A kind of multiple beam processes light path system and its method with optical axis
US20210197281A1 (en) * 2018-11-29 2021-07-01 Hitachi Metals, Ltd. Manufacturing method for additively manufactured body and manufacturing device for additively manufactured body
CN111730861A (en) * 2020-06-30 2020-10-02 北京闻亭泰科技术发展有限公司 3D prints laser processing module based on digital light processing
CN112719304A (en) * 2020-12-29 2021-04-30 武汉惟景三维科技有限公司 Preheating device for selective laser sintering
CN113182533A (en) * 2021-03-19 2021-07-30 中国科学院福建物质结构研究所 Laser heating 3D printing system and control method thereof
CN113182533B (en) * 2021-03-19 2023-09-29 中国科学院福建物质结构研究所 Laser heating 3D printing system and control method thereof

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Application publication date: 20170215