CN2744447Y - Laser melting rapid forming device for selected part of metal parts - Google Patents
Laser melting rapid forming device for selected part of metal parts Download PDFInfo
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- CN2744447Y CN2744447Y CN 200420094739 CN200420094739U CN2744447Y CN 2744447 Y CN2744447 Y CN 2744447Y CN 200420094739 CN200420094739 CN 200420094739 CN 200420094739 U CN200420094739 U CN 200420094739U CN 2744447 Y CN2744447 Y CN 2744447Y
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- cylinder
- metal parts
- powder
- laser
- scanning galvanometer
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Abstract
The utility model provides a laser melting rapid forming device for selected part of metal parts, comprising a semiconductor pump YAG laser device or fiber laser device, a beams focusing system, a formed part cylinder and a powder cylinder. The semiconductor pump YAG laser device or fiber laser device is connected with the beams focusing system by light path and is focused and scanned on the formed part cylinder; the formed part cylinder is connected with the powder cylinder through a powder laying drum; the formed cylinder and the powder cylinder are respectively connected with a lifting piston. The powder laying drum is connected with a drive motor which is connected with a computer. The utility model has good beam mode, good mechanical properties of the metal parts being processed, high dimensional accuracy and high surface finish quality.
Description
Technical field
The utility model relates to metal parts processing and forming field, particularly a kind of metal parts precinct laser fusion rapid molding device.
Background technology
At present, the RP technique that is used for directly making metal parts mainly contains two classes: (1) precinct laser sintering SLS (Selective Laser Sintering); (2) laser melting coating is the metalwork straight forming technology of base.
The method that precinct laser sintering SLS (Selective Laser Sintering) makes metal parts comprises that employing low-melting-point metal or organic bonding material are coated on the metal dust surface, during the precinct laser irradiation, low-melting-point metal or adhesives fusing under laser action, and metal dust does not melt, the 3D solid that forms is the metallurgy sintered blank of like powder, there is the certain proportion hole in entity, is generally about 60%, far can not reach 100% density.After the metal parts moulding, need pass through post processing again, generally adopt the method for high temperature sintering or metallic cementation, make profiled member densified.The equipment configuration aspect of this method adopts the CO of 50～200W
2Laser instrument, spot size 0.1～0.7mm, because the power density of laser is not high, industrial difficulty is applied to the sintering of metal dust, is used for the sintering of engineering plastics or organic material powder more.
Laser melting coating is the metalwork straight forming technology of base, the U.S. is referred to as LENS (Laser EngineeredNet Shaping), be referred to as LG (Laser Generating) in Germany, be also referred to as " laser melting coating rapid shaping ", " the nearly shape of laser is made " in China or be called for short " laser fast shaping ".This method adopts a kind of coaxial annular powder jet, high-power Nd:YAG solid state laser or CO
2Laser instrument, the powder convergent point of conveying overlaps with laser action point, moves by workbench or nozzle, obtains the cladding entity of accumulation, and density reaches and is close to 100%, and tissue has the rapid solidification feature, and performance slightly improves than conventional method.What yet this technology was used is high power laser, comprises the CO of multikilowatt
2With the Nd:YAG laser instrument, though can obtain the compact metal entity of metallurgical binding, but because the hot spot in laser action district is bigger, generally about 1mm, so gained metal parts dimensional accuracy and surface smoothness are all poor, can only make rough blank, need further carry out to use after the fine finishining.
Summary of the invention
The purpose of this utility model is exactly in order to solve above-mentioned the deficiencies in the prior art part, and a kind of metal parts precinct laser fusion rapid molding device that can directly produce metal die with higher dimensional precision and surface smoothness, function prototype, the parts that complicated shape or cavity structure are arranged, medical science implant etc. is provided.
The utility model is achieved through the following technical solutions: described a kind of metal parts precinct laser fusion rapid molding device comprises semiconductor pumped YAG laser instrument or optical fiber laser, light beam focusing system, profiled member cylinder and powder cylinder are formed, its interconnected relationship is, described semiconductor pumped YAG laser instrument or optical fiber laser and light beam focusing system light path connection mutually, and focusing scanning is in the profiled member cylinder, described profiled member cylinder is connected with the powder cylinder by shop powder cylinder, described profiled member cylinder and powder cylinder are connected with lifting piston respectively, described shop powder cylinder is connected with drive motors, and drive motors is connected with computer.
In order to realize the utility model better, the power output of described semiconductor pumped YAG laser instrument or optical fiber laser is 100～200W, and beam quality factor is M2=1.1～2; Described light beam focusing system comprises beam expanding lens, focus lamp and the scanning galvanometer of light path connection successively, and scanning galvanometer is connected with computer; Described light beam focusing system also comprises beam expanding lens, scanning galvanometer and the F θ compound lens of light path connection successively, and scanning galvanometer is connected with computer; Described scanning galvanometer comprises the two galvanometers of X, Y, effective width 24～30mm, response speed＜1 microsecond.
During the utility model work, at first utilize computer to set up the CAD geometrical model, and it is discrete to carry out layering to metal parts; With the metal or alloy powder in the powder cylinder, spread to the profiled member cylinder; Semiconductor pumped YAG laser instrument or optical fiber laser scan the metal or alloy powder, obtain the focal beam spot of 30～50 μ m on laser and metal or alloy powder interaction surfaces, with the metal or alloy powder smelting; By a minute layer scattering, repeat said process, the metal or alloy powder is successively melted, be piled into an entity, obtain forming metal parts.
Principle of the present utility model is as follows: according to formula d=4 λ M
2F/ (π D), wherein: d is a focal beam spot, M
2Be beam quality factor, d and M
2Proportional.Core of the present utility model is the focal beam spot that will obtain 30～50 μ m, so just can reach required power density＞5 * 10
6W/cm
2, could be fusion of metal powder, and have only M
2=1.1～2 just can reach the requirement (laser generator that can reach above-mentioned requirements comprises semiconductor pumped YAG laser instrument and optical fiber laser) of focal beam spot.The focal beam spot of high-quality, high power density laser successively melts the metal or alloy powder, is piled into the entity of a metallurgical binding, dense structure, and entity density reaches 90～100%.Metal parts after the moulding in sealing and be full of in the profiled member cylinder of high purity inert gas and carry out Global Macros, simultaneously in order to guarantee that active element does not produce oxidation, is also needed to carry out the local gas protection.
The utility model has following advantage and effect with respect to prior art:
1, beam mode is good, and the utility model uses semiconductor pumped YAG laser instrument or the optical fiber laser of power at 100～200W, can reach the focal beam spot of 30～50 μ m, and power density reaches 5 * 10
6W/cm
2More than.
2, metal parts satisfactory mechanical property, the utility model adopts focal beam spot that the metal or alloy powder is successively melted, be piled into the entity of a metallurgical binding, dense structure, entity density is near 100%, can prevent the generation of crackle and pore, and make the metal parts after the processing have mechanical performance preferably, have higher intensity and the hardness of congruent material that obtains than smelting process.
3, metal parts dimensional accuracy and surface smoothness height, because the focused spot size that adopts is 30～50 μ m, the surface roughness of processing back metal parts can reach 30～50 μ m, dimensional accuracy can reach 0.1mm, this lays a good foundation for the moulding of precision component, and metal parts promptly can be used as the fabricated part use after through surface finish or blasting treatment.
4, applied widely, the utility model can directly be made the 3D solid member of stainless steel, tool steel, titanium alloy, nickel-base alloy and tool steel, finish the rapid shaping of various complicated shape parts, as metal die, function prototype, the parts that complicated shape or cavity structure are arranged, medical science implant etc.
Description of drawings
Fig. 1 is the structural representation of a kind of metal parts precinct laser fusion rapid molding device of the utility model embodiment one;
Fig. 2 is the structural representation of a kind of metal parts precinct laser fusion rapid molding device of the utility model embodiment two;
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment one
As shown in Figure 1, the utility model adopts the prefocusing mode, comprise the light beam focusing system that laser instrument 1 and beam expanding lens 2, focus lamp 3, scanning galvanometer 4 are formed, profiled member cylinder 5 is connected with powder cylinder 7 by shop powder cylinder 6, and profiled member cylinder 5 and powder cylinder 7 are connected with lifting piston 8.Profiled member cylinder 5, shop powder cylinder 6, powder cylinder 7, lifting piston 8 and corresponding control driver part and calculation mechanism powdered paving system.Wherein, laser instrument 1 semiconductor pumped YAG laser instrument of employing and the power supply of setting up thereof, water-cooling system, 100 watts of laser powers, wavelength 1.06 μ m, beam quality factor M
2=1.5,3～6 millimeters of laser output faculas; Scanning galvanometer 4 adopts the two galvanometers of X, Y, effective width 24～30mm, response speed＜1 microsecond; Focus lamp 3 adopts the lens of Ф 40, focal distance f=500mm.Laser 9 is after laser instrument 1 output, restraint into 24mm through beam expanding lens 2 expansions, line focus mirror 3 is radiated at scanning galvanometer 4 surfaces, focus at distance lens 500mm place then, it is the interaction point of profiled member cylinder 5 inner lasers 9 and metal dust, by the small sway of scanning galvanometer 4, can realize that the plane of focus point is moved.It is the precision lead screw drive of ± 1 μ m that lifting piston 8 adopts precision, realizes the lifting moving of profiled member cylinder 30～50 μ m.Shop powder cylinder 6 is finished the action of shop powder and return automatically by driven by motor under the control of computer, the metal dust in the powder cylinder 7 adopts tool steel dusty material, powder particle size＜10 μ m.Computer through the section of common softwares such as Magics, generates the CAD 3D model of design software by the path of writing at this device scanning galvanometer module parameter then and realizes geometrical model scanning machining control.
Embodiment two
As shown in Figure 2, the utility model adopts the back type of focusing, and light beam focusing system comprises beam expanding lens 2, scanning galvanometer 4 and F θ compound lens 10, and laser instrument 1 adopts optical fiber laser.Wherein, the focal distance f of F θ compound lens 10=160～200mm.Laser 9 after beam expanding lens 2 expands bundle, is radiated at scanning galvanometer 4 surfaces from laser instrument 1 output earlier, focus on through F θ compound lens 10 then, be the interaction point of profiled member cylinder 5 inner lasers 9 and metal dust, by the small sway of scanning galvanometer 4, can realize that the plane of focus point is moved equally.Metal dust in the powder cylinder 7 adopts stainless steel powder powder material, powder particle size＜10 μ m.Other structure is identical with embodiment one.
Embodiment three
Laser instrument 1 semiconductor pumped YAG laser instrument of employing of the present utility model and the power supply of setting up thereof, water-cooling system, 150 watts of laser powers, beam quality factor M
2=1.1; Alloy powder in the powder cylinder 7 adopts nickel-base alloy powder powder material, powder particle size＜10 μ m.Other structure is identical with embodiment one.
Embodiment four
Laser instrument 1 semiconductor pumped YAG laser instrument of employing in the metal parts precinct laser fusion rapid molding device and the power supply of setting up thereof, water-cooling system, 200 watts of laser powers, beam quality factor M
2=2; Alloy powder in the powder cylinder 7 adopts titanium alloy powder material, powder particle size＜10 μ m.Other structure is identical with embodiment one.
As mentioned above, can realize the utility model preferably.
Claims (5)
1, a kind of metal parts precinct laser fusion rapid molding device, it is characterized in that, comprise semiconductor pumped YAG laser instrument or optical fiber laser, light beam focusing system, profiled member cylinder and powder cylinder are formed, its interconnected relationship is, described semiconductor pumped YAG laser instrument or optical fiber laser and light beam focusing system light path connection mutually, and focusing scanning is in the profiled member cylinder, described profiled member cylinder is connected with the powder cylinder by shop powder cylinder, described profiled member cylinder and powder cylinder are connected with lifting piston respectively, described shop powder cylinder is connected with drive motors, and drive motors is connected with computer.
2, a kind of metal parts precinct laser fusion rapid molding device according to claim 1 is characterized in that, the power output of described semiconductor pumped YAG laser instrument or optical fiber laser is 100～200W, and beam quality factor is M
2=1.1～2.
3, a kind of metal parts precinct laser fusion rapid molding device according to claim 1 is characterized in that, described light beam focusing system comprises beam expanding lens, focus lamp and the scanning galvanometer of light path connection successively, and scanning galvanometer is connected with computer.
4, a kind of metal parts precinct laser fusion rapid molding device according to claim 1 is characterized in that, described light beam focusing system comprises beam expanding lens, scanning galvanometer and the F θ compound lens of light path connection successively, and scanning galvanometer is connected with computer.
5, a kind of metal parts precinct laser fusion rapid molding device according to claim 1 is characterized in that, described scanning galvanometer comprises the two galvanometers of X, Y, effective width 24～30mm, response speed＜1 microsecond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420094739 CN2744447Y (en) | 2004-11-05 | 2004-11-05 | Laser melting rapid forming device for selected part of metal parts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420094739 CN2744447Y (en) | 2004-11-05 | 2004-11-05 | Laser melting rapid forming device for selected part of metal parts |
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| CN2744447Y true CN2744447Y (en) | 2005-12-07 |
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| CN 200420094739 Expired - Fee Related CN2744447Y (en) | 2004-11-05 | 2004-11-05 | Laser melting rapid forming device for selected part of metal parts |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402196C (en) * | 2005-12-21 | 2008-07-16 | 北京工业大学 | Metal powder laser micro shaping gas protection device |
| CN102116933A (en) * | 2011-02-28 | 2011-07-06 | 许小曙 | Laser scanning method for selective laser firing |
| CN103071797A (en) * | 2013-01-23 | 2013-05-01 | 西安铂力特激光成形技术有限公司 | Large-format selective laser melting (SLM) equipment of multi- galvanometer |
| CN104550952A (en) * | 2014-12-19 | 2015-04-29 | 江苏大学 | Rapid laser printing device and method for water pump shell |
| CN104889395A (en) * | 2015-06-25 | 2015-09-09 | 武汉大学 | Nanosecond-picosecond-femtosecond laser technology based metal product 3D printing method |
| CN104959605A (en) * | 2015-07-27 | 2015-10-07 | 中南大学 | Selective laser cladding equipment for preparation of magnesium alloy artificial bone |
-
2004
- 2004-11-05 CN CN 200420094739 patent/CN2744447Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402196C (en) * | 2005-12-21 | 2008-07-16 | 北京工业大学 | Metal powder laser micro shaping gas protection device |
| CN102116933A (en) * | 2011-02-28 | 2011-07-06 | 许小曙 | Laser scanning method for selective laser firing |
| CN103071797A (en) * | 2013-01-23 | 2013-05-01 | 西安铂力特激光成形技术有限公司 | Large-format selective laser melting (SLM) equipment of multi- galvanometer |
| CN104550952A (en) * | 2014-12-19 | 2015-04-29 | 江苏大学 | Rapid laser printing device and method for water pump shell |
| CN104889395A (en) * | 2015-06-25 | 2015-09-09 | 武汉大学 | Nanosecond-picosecond-femtosecond laser technology based metal product 3D printing method |
| CN104889395B (en) * | 2015-06-25 | 2017-01-18 | 武汉大学 | Nanosecond-picosecond-femtosecond laser technology based metal product 3D printing method and system |
| CN104959605A (en) * | 2015-07-27 | 2015-10-07 | 中南大学 | Selective laser cladding equipment for preparation of magnesium alloy artificial bone |
| CN104959605B (en) * | 2015-07-27 | 2017-10-10 | 中南大学 | A kind of selective laser cladding equipment for preparing magnesium alloy artificial bone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Dongguan Trump Opto-Electronic Co., Ltd. Assignor: South China University of Technology Contract fulfillment period: 2006.9.30 to 2012.9.30 Contract record no.: 2009440000092 Denomination of utility model: Laser melting rapid forming device for selected part of metal parts Granted publication date: 20051207 License type: Exclusive license Record date: 20090109 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.9.30 TO 2012.9.30; CHANGE OF CONTRACT Name of requester: DONGGUAN CITY CHUANGPU PHOTOELECTRICITY TECHNOLOGY Effective date: 20090109 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051207 Termination date: 20131105 |