CN202343945U - Quickly-forming system for selective laser sintering - Google Patents
Quickly-forming system for selective laser sintering Download PDFInfo
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- CN202343945U CN202343945U CN2011205106964U CN201120510696U CN202343945U CN 202343945 U CN202343945 U CN 202343945U CN 2011205106964 U CN2011205106964 U CN 2011205106964U CN 201120510696 U CN201120510696 U CN 201120510696U CN 202343945 U CN202343945 U CN 202343945U
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- 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
Abstract
The utility model relates to a quickly-forming system for selective laser sintering. The quickly-forming system is characterized by comprising an optical fiber laser, a digital scanning vibration mirror, an F theta mirror, a powder paving and conveying system, a forming piston and an air protective cavity; and according to the connection relation, the optical fiber laser is directly connected with the digital scanning vibration mirror; the F theta mirror is fixed to the other end of the digital scanning vibration mirror; a focusing focal point of the F theta mirror is positioned on the surface of a forming cylinder; the powder paving and conveying system is fixed to the upper part of the forming cylinder and the upper surface of the forming cylinder is enclosed by the air protective cavity to form a closed machining space; the forming piston is arranged inside the forming cylinder and is connected with a stepping motor; and the powder paving and conveying system is fixed to a linear guide rail and is connected with the stepping motor. The quickly-forming system has complete functions and can be used for machining metal and non-metal materials, and formed parts are high in dimensional accuracy and high in formability.
Description
Technical field
The utility model relates to the complete Laser Rapid Prototyping System of a cover, not only has been applicable to non-metal powder but also laser fast shaping that be applicable to metal dust.
Background technology
The principle of rapid laser-shaping technique is the three-dimensional entity model that generates with CAD; The 2-D data of the section through delamination software layering, each thin layer is used for the drive controlling laser beam; Optionally Working liquids, powder or sheeting; Process the thin layer that requires shape, accumulation successively forms physical model.Laser fast shaping is divided into following several types: photocuring moulding, laminated solid body manufacturing, selective laser sintering and engineered net forming technique.As a kind of new technique; It and traditional processing pattern are completely different; Do not need machining equipment just can make the very complicated workpiece of shape; Through digitized forming technique, automatically, directly, fast and accurately design philosophy is converted into prototype or the part with certain function.Having wide range of applications of SLM profiled member, as: the biology of the micro element of mechanical field, mould, biological field is implanted part, the radiating element of electronic applications, the Superlight spare of aerospace field, gradient function composite material parts.Advantage such as although rapid laser-shaping technique has that moulding process is simple, part performance is good, stock utilization is high and applicability is wide; But auxiliary equipment and motion control required precision to adding man-hour are quite high; And present Laser Rapid Prototyping System both domestic and external is all very expensive, has had a strong impact on the application and the popularization of rapid laser-shaping technique.
The utility model content
For above-mentioned quick molding method, the utility model patent is applicable to precinct laser sintering.Complicated to traditional rapid prototyping system mechanism structure; Matching requirements are high, defectives such as motion credibility difference, and this patent has carried out optimal design again to whole system; Under the prerequisite of complete realization rapid shaping processing, simplified the complexity of system greatly, made its structure more reasonable.
A kind of precinct laser sintering for quick formation system is characterized in that, comprises optical fiber laser, digital scanning galvanometer, F θ mirror, shop powder feed system, moulding piston and gas shield chamber; Its interconnected relationship is: optical fiber laser directly is connected with the digital scanning galvanometer, and the other end of digital scanning galvanometer is fixed with F θ mirror, and the focusing focus of F θ mirror is at the moulding cylinder surfaces; The top of moulding cylinder is fixed with the shop powder feed system and upper surface is surrounded by the gas shield chamber, forms the processing space of a sealing; The moulding cylinder interior is equipped with the moulding piston; Above-mentioned moulding piston is connected with stepper motor; The shop powder feed system is fixed on the line slideway and is connected with stepper motor.
Further, preheating device is placed in the moulding internal piston.
Further, it is characterized by the shop powder feed system and adopt overhead powder box shop powder feeding structure.
Further, it is closed it is characterized by the gas shield chamber, and air inlet is arranged at the bottom, and opposite side top has gas off-take.
Rapid prototyping system can be divided into the two large divisions: focus on processing part and auxiliary shop powder part.Focus on the processing part and comprise each parts in laser instrument, the light path; Auxiliary shop powder moulding section comprises parts such as powder feeder, Powder spreader, moulding cylinder.The focusing processing part of the utility model patent is adopted comparatively, and universal scheme comprises: optical fiber laser, digital scanning galvanometer and F θ mirror.This scheme light path is simple, need not to carry out complicated light path and regulates, and adopts the vibration mirror scanning mode to process and can realize higher process velocity.The typical structure of the auxiliary shop of tradition powder moulding section is by supplying powder cylinder, moulding cylinder, shop powder mechanism, piston, annular seal space and associated drives parts to form.This kind structural volume is big, many with powder, complex structure, action are loaded down with trivial details.For overcoming above-mentioned deficiency, the utility model has designed the novel auxiliary shop of cover powder formation system.Native system adopts powder box half-sealed structure on the single cylinder, partly is made up of shop powder box, moulding cylinder, piston, leading screw, line slideway and protection cavity etc.Powder box both sides, shop are fixed on the line slideway, under the drive of leading screw, do linear reciprocating motion along the direction of line slideway; Piston base is equipped with heating rod can process preceding preheating; Shop powder box and moulding cylinder upper surface are closed in the protection inside cavity, when the needs gas shield, can charge into protective gas in the process powder is protected.Before the processing and forming, the powder for molding of the capacity of at first in powder box, packing into, the moulding piston rises to top, charges into protective gas after the sealing of protection cavity.Add man-hour, moulding piston decline certain altitude, the shop powder box is accomplished powder feeding and the action of paving above moving to the moulding cylinder under the drive of leading screw; Under the control of computer, the laser instrument bright dipping is carried out the selective sintering moulding to bisque behind the powder of completion shop.After accomplishing the processing and forming of this one deck, the moulding piston layer height that descends again, the shop powder box carries out powder feeding and paves action, and laser instrument carries out selective sintering once more, thereby realizes that fabrication cycles carries out continuously.
The utlity model has following advantage:
1. have only digital galvanometer and two optical element structures of F θ mirror simple in the light path, be convenient to the adjusting of light path.
2. adopt and go up powder box shop powder feeding structure; With traditional powder supplying mechanism with scrape the powder organization's integration together, simplify the structure, saved the powder consumption in the processing; The mechanism that makes script need two motors to drive needs only a motor and just can accomplish, and no longer has the coordination problem of motion.
3. guiding mechanism adopts the line slideway guiding, Stability Analysis of Structures, and kinematic accuracy is high, and bearing capacity is strong.
4. heater is distributed in the moulding piston base, and the powder that needs are heated can evenly heat.
Description of drawings
Fig. 1 a is the rapid prototyping system front view
Fig. 1 b is the rapid prototyping system vertical view
The specific embodiment
At first be necessary to be pointed out that at this present embodiment only is used for the present invention is further specified, can not be interpreted as restriction protection domain of the present invention.
Embodiment one
Shown in Fig. 1 a and Fig. 1 b, this example device comprises with the lower part: laser instrument 1, digital scan galvanometer 2, F θ mirror 3, gas shield chamber 4, support 5, moulding cylinder 6, moulding piston 7, leading screw 1, stepper motor 1, line slideway 10, shop dust feeder 11, leading screw 2 12, stepper motor 2 13.Wherein, laser instrument 1 is the 50W optical fiber laser, wavelength 1064nm, beam quality factor M
2＜1.1, the focal beam spot size is 50 μ m; Digital scanning galvanometer 2 is Raylase series ss-20 [Y] D2 model, and sweep limits is 120mm * 120mm, and the corresponding time is less than 0.6ms.F θ mirror 3 is the lens of 180mm for
focal length.Last powder box powder feeding structure (profile such as Fig. 2) after the shop powder feed system adopt to be optimized, this structure has been avoided leaking of unnecessary powder when guaranteeing that powder flows smoothly, to spread powder effective and with the few purpose of powder thereby reach.The shop powder box uses pitch to drive as the leading screw 2 12 of 2mm, and shop powder speed can reach 20mm/s.It is leading screw one 8 drives of 1mm that moulding piston 7 adopts pitch, can realize accurately moving of 50-100 μ m.In process, model at first carries out hierarchy slicing through special-purpose software, and slice thickness of moulding cylinder decline is spread powder box subsequently and under the drive of leading screw, carried out the powder action of translation shop, and laser instrument carries out the moulding that the constituency machines one deck behind the powder of completion shop.The moulding of the reciprocal complete model of this process.
Instance implements two
Powder for molding adopts the silica sand powder particle that is coated with phenolic resins, and the average grain diameter of this powder is about 100 μ m.This instance peace following steps are carried out: in the dust feeder 11 of shop, add the powder particle of capacity, it is enclosed in the gas shield chamber 4.The threedimensional model that needs moulding is input to control carries out hierarchy slicing in the software and handle, according to the slice thickness computer control moulding piston 7 corresponding height that descends.Because diameter of particle own is bigger, the lift height of therefore setting is that 0.2mm computer control subsequently shop dust feeder 11 is spread the powder action in this example.After accomplishing above-mentioned action, thereby computer sees the signal bright dipping off for laser instrument 1 and control figure scanning galvanometer 2 carries out the machine-shaping that one deck is accomplished in selectivity processing according to the layering profile.Said process carries out until whole threedimensional model completion of processing repeatedly, thereby it is in kind to obtain needed 3 d part.
Claims (4)
1. a precinct laser sintering for quick formation system is characterized in that, comprises optical fiber laser, digital scanning galvanometer, F θ mirror, shop powder feed system, moulding piston and gas shield chamber; Its interconnected relationship is: optical fiber laser directly is connected with the digital scanning galvanometer, and the other end of digital scanning galvanometer is fixed with F θ mirror, and the focusing focus of F θ mirror is at the moulding cylinder surfaces; The top of moulding cylinder is fixed with the shop powder feed system and upper surface is surrounded by the gas shield chamber, forms the processing space of a sealing; The moulding cylinder interior is equipped with the moulding piston; Above-mentioned moulding piston is connected with stepper motor; The shop powder feed system is fixed on the line slideway and is connected with stepper motor.
2. a kind of precinct laser sintering for quick formation according to claim 1 system is characterized by preheating device and is placed in the moulding internal piston.
3. a kind of precinct laser sintering for quick formation according to claim 1 system is characterized by the shop powder feed system and adopts overhead powder box shop powder feeding structure.
4. a kind of precinct laser sintering for quick formation according to claim 1 system, it is closed it is characterized by the gas shield chamber, and air inlet is arranged at the bottom, and opposite side top has gas off-take.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205106964U CN202343945U (en) | 2011-12-08 | 2011-12-08 | Quickly-forming system for selective laser sintering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205106964U CN202343945U (en) | 2011-12-08 | 2011-12-08 | Quickly-forming system for selective laser sintering |
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| Publication Number | Publication Date |
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| CN202343945U true CN202343945U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205106964U Expired - Fee Related CN202343945U (en) | 2011-12-08 | 2011-12-08 | Quickly-forming system for selective laser sintering |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071798A (en) * | 2013-01-23 | 2013-05-01 | 西安铂力特激光成形技术有限公司 | Linear guide rail type SLM (Selective Laser Melting) molding equipment |
| CN103111756A (en) * | 2013-02-05 | 2013-05-22 | 余振新 | Laser optical path guiding system of laser sinter molding equipment |
| CN103658646A (en) * | 2013-12-10 | 2014-03-26 | 华南理工大学 | Two-way powder spreading device of SLM equipment and powder spreading method |
| CN103817328A (en) * | 2014-02-21 | 2014-05-28 | 西安交通大学 | Device for improving quality of sintering forming piece in metal powder laser selection area |
| CN104142574A (en) * | 2014-06-30 | 2014-11-12 | 湖南华曙高科技有限责任公司 | Laser scanning device and method for making three-dimensional object |
| CN104439240A (en) * | 2013-09-18 | 2015-03-25 | 江苏永年激光成形技术有限公司 | Laser forming manufacturing integration platform device |
| CN104722758A (en) * | 2015-03-04 | 2015-06-24 | 西安交通大学 | Device for improving density of part directly formed through selective laser melting process |
| CN104890240A (en) * | 2015-05-23 | 2015-09-09 | 哈尔滨工业大学 | Nanopowder laser selective melting additive manufacturing system and method |
| CN105039970A (en) * | 2015-07-02 | 2015-11-11 | 西安交通大学 | Dual-beam laser selective melting and moulding equipment with exchangeable powder cylinder |
| CN105414545A (en) * | 2016-01-08 | 2016-03-23 | 江苏永年激光成形技术有限公司 | Slm round working cylinder |
| TWI564099B (en) * | 2014-12-24 | 2017-01-01 | 財團法人工業技術研究院 | Composite beam generator and powder melting or sintering method using the same |
| CN107350471A (en) * | 2017-06-01 | 2017-11-17 | 南京理工大学 | A kind of new powdering system for selective laser fusing former |
-
2011
- 2011-12-08 CN CN2011205106964U patent/CN202343945U/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071798B (en) * | 2013-01-23 | 2015-11-18 | 西安铂力特激光成形技术有限公司 | Linear guide rail type selective laser melting SLM former |
| CN103071798A (en) * | 2013-01-23 | 2013-05-01 | 西安铂力特激光成形技术有限公司 | Linear guide rail type SLM (Selective Laser Melting) molding equipment |
| CN103111756A (en) * | 2013-02-05 | 2013-05-22 | 余振新 | Laser optical path guiding system of laser sinter molding equipment |
| CN103111756B (en) * | 2013-02-05 | 2015-09-09 | 余振新 | The laser optical path guidance system of laser sintering and moulding equipment |
| CN104439240A (en) * | 2013-09-18 | 2015-03-25 | 江苏永年激光成形技术有限公司 | Laser forming manufacturing integration platform device |
| CN104439240B (en) * | 2013-09-18 | 2017-01-11 | 江苏永年激光成形技术有限公司 | Laser forming manufacturing integration platform device |
| CN103658646A (en) * | 2013-12-10 | 2014-03-26 | 华南理工大学 | Two-way powder spreading device of SLM equipment and powder spreading method |
| CN103658646B (en) * | 2013-12-10 | 2016-08-17 | 华南理工大学 | A kind of selective laser fusing SLM device two-way powder laying device and paving powder method |
| CN103817328A (en) * | 2014-02-21 | 2014-05-28 | 西安交通大学 | Device for improving quality of sintering forming piece in metal powder laser selection area |
| CN103817328B (en) * | 2014-02-21 | 2016-07-06 | 西安交通大学 | Improve the device of metal powder laser constituency sintering forming element quality |
| CN104142574A (en) * | 2014-06-30 | 2014-11-12 | 湖南华曙高科技有限责任公司 | Laser scanning device and method for making three-dimensional object |
| TWI564099B (en) * | 2014-12-24 | 2017-01-01 | 財團法人工業技術研究院 | Composite beam generator and powder melting or sintering method using the same |
| US9636775B2 (en) | 2014-12-24 | 2017-05-02 | Industrial Technology Research Institute | Composite beam generator and powder melting or sintering method using the same |
| CN104722758A (en) * | 2015-03-04 | 2015-06-24 | 西安交通大学 | Device for improving density of part directly formed through selective laser melting process |
| CN104890240A (en) * | 2015-05-23 | 2015-09-09 | 哈尔滨工业大学 | Nanopowder laser selective melting additive manufacturing system and method |
| CN105039970A (en) * | 2015-07-02 | 2015-11-11 | 西安交通大学 | Dual-beam laser selective melting and moulding equipment with exchangeable powder cylinder |
| CN105414545A (en) * | 2016-01-08 | 2016-03-23 | 江苏永年激光成形技术有限公司 | Slm round working cylinder |
| CN105414545B (en) * | 2016-01-08 | 2018-04-20 | 江苏永年激光成形技术有限公司 | SLM circular work cylinders |
| CN107350471A (en) * | 2017-06-01 | 2017-11-17 | 南京理工大学 | A kind of new powdering system for selective laser fusing former |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20121208 |