CN107639828A - A kind of protective gas EGR suitable for 3D printing - Google Patents
A kind of protective gas EGR suitable for 3D printing Download PDFInfo
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- CN107639828A CN107639828A CN201710939138.1A CN201710939138A CN107639828A CN 107639828 A CN107639828 A CN 107639828A CN 201710939138 A CN201710939138 A CN 201710939138A CN 107639828 A CN107639828 A CN 107639828A
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Abstract
The invention discloses a kind of protective gas EGR suitable for 3D printing,Including forming room,Protect gas locker room and protection gas EGR,Forming room bottom both ends are installed with moulding cylinder and powder cylinder respectively,The protection gas locker room is fixedly mounted on forming room end,And the protection gas EGR is located at the protection gas locker room other end,By carrying out 3D printing in forming room,And during whole printing,The model or raw material of printing are in the environment of protection gas,It can prevent from being influenceed by some compositions in air due to aerial natural cooling by the protection compression ring border of flowing,By forming perfect environmental protection,Prevent from forming flaw,Improve the effect and molding effect of printing,And the protection gas of flowing can take away foreign gas caused by print procedure,It is further advanced by the cooling velocity that flowing protection gas can speed up printing workpiece,Improve the efficiency of printing.
Description
Technical field
The present invention relates to 3D printing technique field, specially a kind of protective gas EGR suitable for 3D printing.
Background technology
3D printing is also known as 3 D-printing, and its scientific name is increasing material manufacturing, refer to by material disposably melt be polymerized to the fast of type
Fast manufacturing technology, it based on mathematical model file, with powdery metal or plastics etc. can jointing material, by successively beating
Print and be superimposed pantostrat mode of different shapes to construct any object of three-dimensional, 3D printing is substantially exactly rapid shaping technique
One of.
The advantages of 3D printing technique is most prominent is without mould, it is not required that machining, can be directly from designed meter
The object of any shape is generated in calculation machine graph data.3D printing technique can process the part that conventional method is difficult to manufacture.Cross
It is exactly a blank to go traditional manufacture method, and unwanted place is cut away, and is that multidimensional is processed, or using mould,
Metal and plastic melt are filled and enter to obtain such part, so processes for the parts of complexity extremely difficult.
Secondly, process cycle is short, precision is high, realizes the near-net-shape of initial workpiece, while solves traditional manufacture die sinking and expend the time
The problem of long.Later stage secondary process amount greatly reduces, and avoids the leakage of data and time span of external processing, while also avoids
The error accumulation of following process process, precision are higher.
In prior art means, vibratile three D of a kind of injector head as Application No. 201610870254.8 is announced is beaten
Printing equipment is put, and by being provided with ultrasonic vibration apparatus inside injector head, has relatively simple structure, moulded products have close
Degree is big, stretching and impact strength are obtained for larger raising, good product quality, indirectly controls the precision of printing；And for example
A kind of 3D printing device that Application No. 201610149166.9 is announced, passes through the water tank, water circulating pump and cold row's head and the tail phase
A temperature control circulation system is even formed, the cold row is arranged at the print area of workbench, the semiconductor thermoelectric and the water tank
It is connected to control the temperature of its internal flow, using constant temperature system, the overall printing effect of model is more smooth, improves printing
Precision.
In existing 3D printing, the precision of printing how is controlled to be presently the most the technological means of core always.3D is beaten
The precision of print influences have a lot, the influence of injector head described above and temperature, and further summary technical scheme and reality
The problem of existing, and the technical scheme being widely used at present is combined, also existing major defect is mainly reflected in shaping
During, existing device typically using in air natural cooling, and this cooling procedure easily by air it is some into
The influence divided, cause 3D printing part that improper cooling procedure occurs, form flaw.
The content of the invention
In order to overcome the shortcomings of prior art, the present invention provides a kind of protective gas suitable for 3D printing and circulates dress
Put, the model or raw material of printing are in protecting in the environment of gas, by the protection compression ring border of flowing can prevent due to
Natural cooling in air and influenceed by some compositions in air, by forming perfect environmental protection, prevent from forming the flaw
Defect, effectively can solve the problems, such as in background technology.
The technical solution adopted for the present invention to solve the technical problems is：A kind of protective gas suitable for 3D printing circulates
Device, including forming room, the forming room include inner chamber, and the intracavity bottom is installed with injector head installation pedestal,
Rail plate is also installed between moulding cylinder and powder cylinder, forming room bottom both ends are installed with moulding cylinder respectively
With powder cylinder；
Also include protection gas locker room and protection gas EGR, the protection gas locker room is fixedly mounted on forming room end
Portion, and the protection gas EGR is located at the protection gas locker room other end；
The protection gas locker room includes protection gas storage tank, and air pressure is installed with inside the protection gas storage tank
Pump, and voltage stabilizing top plate is installed with the top of protection gas storage tank, the pulsometer is directly connected by corrugated conduit with inner chamber
It is logical；
The protection gas EGR includes protection gas circulation pipe, and the protection gas circulation pipe is respectively with protecting gas storage tank
It is directly connected to inner chamber, one-way cock is also installed with inner chamber and the junction of protection gas circulation pipe, in one-way cock
Outside is also installed with secondary pulsometer.
As a kind of preferable technical scheme of the present invention, moulding cylinder and the powder cylinder is by supporting plate and cylinder arm group
Into the supporting plate is fixedly mounted at the top of cylinder arm.
As a kind of preferable technical scheme of the present invention, test specimen fixed base is installed with respectively at the top of two supporting plates
Seat and powder bucket, the test specimen fixed pedestal and powder bucket are slided up and down by cylinder arm.
As a kind of preferable technical scheme of the present invention, the quantity of the injector head installation pedestal is three, three injections
Head installation pedestal is uniformly distributed using moulding cylinder center as symmetrical centre, and numerical control company is mounted in each injector head installation pedestal
Connect port.
As a kind of preferable technical scheme of the present invention, the rail plate is provided with powder-laying roller, and the powder-laying roller includes
Chassis and roller, the roller are embedded in inside rail plate, and the chassis is arranged on roller by rotary shaft.
As a kind of preferable technical scheme of the present invention, the tray bottom is also installed with cycle variable-frequency motor, and
Also be installed with powdering plate at the top of chassis, the powdering plate by roller along rail plate moulding cylinder and powder cylinder it
Between slidably reciprocate.
As a kind of preferable technical scheme of the present invention, the voltage stabilizing top plate includes sealed bolster plate, the sealed bolster plate and
Protection gas storage top tank structure junction is equipped with Airtight gasket, and air pressure lever, the gas are installed with the top of sealed bolster plate
Pressure lever end is also installed with voltage stabilizing gas cylinder.
As a kind of preferable technical scheme of the present invention, the laser interference monitoring device includes catheter lumen, the conduit
Chamber is L-shaped, is installed with light beam isolator and condenser lens respectively at catheter lumen both ends, and on the inside of catheter lumen turning point also
Galvanometer is installed with, the condenser lens passes through inner chamber, and is fixedly mounted on internal chamber wall, the light beam isolator and galvanometer
Between be also installed with beam expanding lens, optical fiber laser, the optical fiber are installed with by suspension on the outside of light beam isolator
Laser beam caused by laser is propagated using two straight lines as symmetry axis is symmetrical, and laser beam is on galvanometer
Angle of reflection is equal, and the pip of two laser beams is symmetrical as symmetrical centre using galvanometer center.
As a kind of preferable technical scheme of the present invention, conduit is fixedly mounted on by triangular support bracket on the inside of the galvanometer
Cavity wall, and the anti-bias snap ring of damping is also equipped between galvanometer and triangular support bracket, in triangular support bracket and the anti-bias card of damping
Rotating ball is also equipped between ring, restraining position ring block is installed on the anti-bias snap ring of damping, the rotating ball is located in spacing ring, described
Damping silica gel cotton is also installed with inside the anti-bias snap ring of damping.
As a kind of preferable technical scheme of the present invention, test specimen ring is also installed with the top of the test specimen fixed pedestal,
Some groups of interference lines are carved with the test specimen ring outside, and the interference line interferes line to be in not arrange equidistantly in annular shape
Row, the interference line arrangement are satisfied by the interference fringe distribution rule of optical-fiber laser.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention by forming room carry out 3D printings, and
And whole printing process and control process are in the closed environment of forming room all the time, and during whole printing,
The model or raw material of printing are in the environment of protection gas, can be prevented due in air by the protection compression ring border of flowing
In natural cooling and influenceed by some compositions in air, by forming perfect environmental protection, prevent from forming flaw, flow
Dynamic protection gas can take away foreign gas caused by print procedure, and in order to protect the workpiece of printing not protected by flowing
The influence of gas, crossed in the protection air-flow communication in moving of reality using stable-pressure device, the gas of flowing is maintained to controllable stream all the time
Between speed and pressure, it can ensure to cause to print to printing unconsolidated workpiece on the premise of flowing protection workpiece is realized
The influence of effect.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is powder-laying roller structural representation of the present invention；
Fig. 3 is moulding cylinder structural representation of the present invention；
Fig. 4 is present invention protection gas locker room structural representation；
Fig. 5 is laser interference monitoring device structural representation of the present invention；；
Fig. 6 is mirror structures schematic diagram of the present invention；.
In figure：1- forming room；2- laser interference monitoring devices；3- protection gas locker room；5- protects gas EGR；
101- moulding cylinders；102- powder cylinders；103- inner chambers；104- injector head installation pedestals；105- rail plates；106- branch
Fagging；107- cylinder arms；108- test specimen fixed pedestals；109- powder buckets；110- flow liner baffle plates；111- numerical controls connectivity port；
112- powder-laying rollers；113- chassis；114- rollers；115- rotary shafts；116- cycle variable-frequency motors；117- powdering plates；118- test specimens
Ring；119- interferes line；
201- catheter lumens；202- light beam isolators；203- condenser lenses；204- galvanometers；205- beam expanding lens；206- suspensions；
207- optical fiber lasers；208- triangular support brackets；The anti-bias snap ring of 209- dampings；210- rotating balls；211- spacing rings；212- dampings
Silica gel cotton；
301- protects gas storage tank；302- pulsometers；303- voltage stabilizing top plates；304- corrugated conduits；305- sealed bolster plates；
306- Airtight gaskets；307- air pressure levers；308- voltage stabilizing gas cylinders；
501- protects gas circulation pipe；502- one-way cocks；503- level pulsometer.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The explanation of following embodiment is refer to the attached drawing, can be to the specific embodiment implemented to the example present invention.
The direction and position term that the present invention is previously mentioned, for example, " on ", " in ", " under ", "front", "rear", "left", "right", " interior ", "
Outside ", " side " etc., only it is direction and position with reference to annexed drawings.Therefore, the direction and position term used is to illustrate
And understand the present invention, and it is not used to the limitation present invention.
Embodiment：
As shown in Figures 1 to 6, the invention provides a kind of protective gas EGR suitable for 3D printing, including into
Type room 1, protection gas locker room 3 and protection gas EGR 5, the bottom both ends of forming room 1 are installed with moulding cylinder respectively
101 and powder cylinder 102, the protection gas locker room 3 is fixedly mounted on the end of forming room 1, and the protection gas EGR 5 is set
In the other end of protection gas locker room 3.
The forming room 1 includes inner chamber 103, and the bottom of inner chamber 103 is installed with injector head installation pedestal 104,
Print injector head for installing, the quantity of the injector head installation pedestal 104 is three, three injector head installation pedestals 104 with
The center of moulding cylinder 101 is uniformly distributed for symmetrical centre, and numerical control connectivity port is mounted in each injector head installation pedestal 104
111, by forming equidistantly uniform distribution on periphery, uniform printing orientative feature can be realized, is embodied in one
In individual three dimensions, printing injector head is uniformly installed by three directions, can avoid printing from a direction, from three
Printed simultaneously on individual direction, while the time-write interval can be reduced, moreover it is possible to the cooling interval between each level is improved,
Improve actual printing and carve conjunction degree, and positioned at the numerical control connectivity port 111 sprayed in installation pedestal 104, it is directly from inside
The port of connection control is formed, the numerical control line of connection can be avoided to be wound from outside, influences practical operation or the cable of printing
For monitoring and printed product is dawdled, rail plate 105, institute are also installed between moulding cylinder 101 and powder cylinder 102
State moulding cylinder 101 and powder cylinder 102 forms by supporting plate 106 and cylinder arm 107, the supporting plate 106 is fixedly mounted on gas
The top of cylinder arm 107, test specimen fixed pedestal 108 and powder bucket 109 are installed with respectively at two tops of supporting plate 106, it is described
Test specimen fixed pedestal 108 and powder bucket 109 are slided up and down by cylinder arm 107, are respectively intended to carrying printing workpiece and powder,
The former is to adapt to longitudinal height change of 3D printing, is enabled to print injector head all the time in approximately the same plane
Complete printing is completed, the layered characteristic in print procedure can be more conformed to, and be more easy for laser monitoring whole process
All on same plane, conplane variation characteristic only need to be observed in monitoring process, without considering that aspect becomes
Change the influence brought to monitoring effect.
The rail plate 105 is provided with powder-laying roller 112, and the powder-laying roller 112 includes chassis 113 and roller 114, described
Roller 114 is embedded in inside rail plate 105, and the chassis 113 is arranged on roller 114 by rotary shaft 115, the chassis
113 bottoms are also installed with cycle variable-frequency motor 116, and are also installed with powdering plate 117 at the top of chassis 113, described
Powdering plate 117 is slidably reciprocated between moulding cylinder 101 and powder cylinder 102 by roller 114 along rail plate 105.
Need especially to be further explained powder-laying roller 112 herein, powder-laying roller 112 in the present invention is in fact only
When for printing consumables can be powder just can using obtaining, and in other consumptive materials be without using, why by its
In forming room 1, also for the applicability for improving whole monitoring device.So-called powder-laying roller 112 is exactly to pass through in fact
The driving roller 114 of cycle variable-frequency motor 116 enters line slip inside rail plate 105, so as to drive top chassis 113 and
Powdering plate 117 carries out the motion in cycle, in this process, drives actual powder to be sprayed on the tack coat of 3D printing, real
The successively increase of existing 3D printings.And why powdering carried out by powder-laying roller 112, also for reducing above printing workpiece
Device value volume and range of product, and when printing consumables is non-powder, powder-laying roller 112 is that do not possess any effect.
The protection gas locker room 3 includes protection gas storage tank 301, and the inside of protection gas storage tank 301 is fixedly mounted
There is pulsometer 302, and voltage stabilizing top plate 303 is installed with the top of protection gas storage tank 301, the pulsometer 302 passes through ripple
Line conduit 304 directly connects with inner chamber 103.
The voltage stabilizing top plate 303 includes sealed bolster plate 305, the sealed bolster plate 305 and the inwall of protection gas storage tank 301
Junction is equipped with Airtight gasket 306, and air pressure lever 307, the air pressure lever are installed with the top of sealed bolster plate 305
307 ends are also installed with voltage stabilizing gas cylinder 308, and the tune of overall constant pressure is realized by the effect of voltage stabilizing gas cylinder 308
It is whole, that is, sealed bolster plate 305 will be promoted to protection gas storage tank 301 when protecting the internal pressure of gas storage tank 301 to decline
Direction is moved, and improves actual pressure, and then keep the constancy of actual pressure.
The protection gas EGR 5 includes protection gas circulation pipe 501, the protection gas circulation pipe 501 respectively with protection
Gas storage tank 301 and discharge chamber 402 are directly connected to, and are also installed with one-way cock 502 in the junction of discharge chamber 402,
The outside of one-way cock 502 is also installed with secondary pulsometer 503.
The laser interference monitoring device 2 includes catheter lumen 201, and the catheter lumen 201 is L-shaped, at the both ends of catheter lumen 201
Light beam isolator 202 and condenser lens 203 are installed with respectively, and are also installed with the inside of the turning point of catheter lumen 201
Galvanometer 204, the condenser lens 203 passes through inner chamber 103, and is fixedly mounted on the wall of inner chamber 103, the light beam isolator 202
Beam expanding lens 205 is also installed between galvanometer 204, light is installed with by suspension 206 in the outside of light beam isolator 202
Fibre laser 207.
The light laser 207 produces required monochromatic light source laser, and can produce different wave length according to demand
Monochromatic light source laser, realize the detection of different accuracy, and pass through light beam isolator first after laser generation and carry out impurity light
Filtering, improve the pure property of light source, prevent the interference of magazine light, the laser after filtering by beam expanding lens 205, and
Single beam laser is resolved into by two beam laser by the effect of beam expanding lens 205, basic light source strip is provided for follow-up laser interference
Part, two beam coherent lasers are re-formed afterwards by the direction of propagation of the change light source of galvanometer 204 without changing other any properties,
In this process, can need to be adjusted according to the transmission direction of required light source, and the process of this adjustment and specific knot
Structure feature will be described in detail further below, then with the focusing work after relevant interference light source by condenser lens
With, by two beams be concerned with light source carry out interference be irradiated to printing workpiece on, formed interference fringe can real-time display printing workpiece
Error, and monitoring accuracy can greatly be amplified.And the specific principle of interference of laser be basic physical knowledge herein not
Repeated again.
The inner side of galvanometer 204 is fixedly mounted on the inwall of catheter lumen 201 by triangular support bracket 208, passes through gusseted
The support that frame 208 is stablized, there is stable supporting construction basis, and between galvanometer 204 and triangular support bracket 208 also
The anti-bias snap ring 209 of damping is installed, there is provided the installation attachment position of galvanometer 204, in triangular support bracket 208 and the anti-bias snap ring of damping
Rotating ball 210 is also equipped between 209, can be realized by the corrective action of rotating ball 210 360 ° without dead angle adjust, and
In practical operation, 360 ° of adjustment in plane, and 180 ° of regulations in plane can only be realized, that is, launch in galvanometer 204
Any regulation on face, restraining position ring block 211 is installed on the anti-bias snap ring 209 of damping, limit is fixed after corrective action is completed
Position, prevents to loosen, and the rotating ball 210 is located in spacing ring 211, also fixed peace inside the anti-bias snap ring 209 of damping
Equipped with damping silica gel cotton 212, the antijamming capability of raising galvanometer 204.
The condenser lens 203 and the center of moulding cylinder 101 the light beam isolator 202, expand on same straight line
The center of mirror 205 and galvanometer 204 is on same straight line, and laser beam is with two caused by the optical fiber laser 207
Straight line is propagated for symmetry axis is symmetrical, and angle of reflection of the laser beam on galvanometer 204 is equal, two laser beams
Pip is symmetrical as symmetrical centre using the center of galvanometer 204, has symmetrical coherent source.
The top of test specimen fixed pedestal 108 is also installed with test specimen ring 118, the test specimen ring 118 and condenser lens
203 centers are on same straight line, and test specimen ring 118, condenser lens 203 and the three of moulding cylinder 101 are centrally located at same
On straight line, some groups of interference lines 119 are carved with the outside of test specimen ring 118, and the interference line 119 is interfered in annular shape
For line 119 in not arranging equidistantly, the interference line 119 arranges the interference fringe distribution rule for being satisfied by optical-fiber laser, will set
Fixed interference line 119 is contrasted as the interference fringe formed in actual interventional procedures, benchmark as a comparison, is advantageous to reality
Border judges the degree of error occurs in actual print procedure, finer to distinguish the order of magnitude for actually occurring error.
In summary, the main characteristic of the invention lies in that：The present invention in forming room by carrying out 3D printing, and entirely
Print procedure and control process are in the closed environment of forming room all the time, and during whole printing, printing
Model or raw material be in protect gas environment in, by the protection compression ring border of flowing can prevent due to it is aerial from
So cool down and influenceed by some compositions in air, by forming perfect environmental protection, prevent from forming flaw, improve printing
Effect and molding effect, and flow protection gas foreign gas caused by print procedure can be taken away and in order to protect
Protect the workpiece of printing is not influenceed by flowing protection gas, is crossed using stable-pressure device in the protection air-flow communication in moving of reality, all the time will
The gas of flowing is maintained between controllable flow velocity and pressure, and can ensure will not be right on the premise of flowing protection workpiece is realized
Print the influence that unconsolidated workpiece causes printing effect.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Claims (10)
1. a kind of protective gas EGR suitable for 3D printing, including forming room (1), the forming room (1) includes inner chamber
(103), inner chamber (103) bottom is installed with injector head installation pedestal (104), in moulding cylinder (101) and powder cylinder
(102) rail plate (105) is also installed between；Forming room (1) the bottom both ends are installed with moulding cylinder respectively
And powder cylinder (102) (101), it is characterised in that：
Also include protection gas locker room (3) and protection gas EGR (5), protection gas locker room (3) is fixedly mounted on into
Type room (1) end, and the protection gas EGR (5) is located at protection gas locker room (3) other end；
Protection gas locker room (3) includes protection gas storage tank (301), the internal fixed peace of protection gas storage tank (301)
Equipped with pulsometer (302), and voltage stabilizing top plate (303), the pulsometer are installed with the top of protection gas storage tank (301)
(302) directly connected with inner chamber (103) by corrugated conduit (304)；
It is described protection gas EGR (5) include protection gas circulation pipe (501), it is described protection gas circulation pipe (501) respectively with guarantor
Shield gas storage tank (301) and inner chamber (103) is directly connected to, also solid in inner chamber (103) and the junction of protection gas circulation pipe (501)
Dingan County is equipped with one-way cock (502), and secondary pulsometer (503) is also installed with the outside of one-way cock (502).
A kind of 2. protective gas EGR suitable for 3D printing according to claim 1, it is characterised in that：It is described into
Type cylinder (101) and powder cylinder (102) form by supporting plate (106) and cylinder arm (107), the fixed peace of the supporting plate (106)
At the top of cylinder arm (107).
A kind of 3. protective gas EGR suitable for 3D printing according to claim 2, it is characterised in that：At two
Test specimen fixed pedestal (108) and powder bucket (109), the test specimen fixed pedestal are installed with respectively at the top of supporting plate (106)
(108) slided up and down with powder bucket (109) by cylinder arm (107).
A kind of 4. protective gas EGR suitable for 3D printing according to claim 1, it is characterised in that：The spray
The quantity for penetrating an installation pedestal (104) is three, and three injector head installation pedestals (104) are symmetrical using moulding cylinder (101) center
Center is uniformly distributed, and numerical control connectivity port (111) is mounted on each injector head installation pedestal (104).
A kind of 5. protective gas EGR suitable for 3D printing according to claim 1, it is characterised in that：The cunning
Dynamic guide rail (105) is provided with powder-laying roller (112), and the powder-laying roller (112) includes chassis (113) and roller (114), the roller
(114) embedded rail plate (105) is internal, and the chassis (113) is arranged on roller (114) by rotary shaft (115).
A kind of 6. protective gas EGR suitable for 3D printing according to claim 5, it is characterised in that：The bottom
Disk (113) bottom is also installed with cycle variable-frequency motor (116), and is also installed with powdering plate at the top of chassis (113)
(117), the powdering plate (117) by roller (114) along rail plate (105) in moulding cylinder (101) and powder cylinder (102)
Between slidably reciprocate.
A kind of 7. protective gas EGR suitable for 3D printing according to claim 1, it is characterised in that：It is described steady
Coping (303) includes sealed bolster plate (305), and the sealed bolster plate (305) and protection gas storage tank (301) inwall junction are equal
Provided with Airtight gasket (306), air pressure lever (307), the air pressure lever are installed with the top of sealed bolster plate (305)
(307) end is also installed with voltage stabilizing gas cylinder (308).
A kind of 8. protective gas EGR suitable for 3D printing according to claim 1, it is characterised in that：It is described to swash
Interference of light monitoring device (2) includes catheter lumen (201), and the catheter lumen (201) is L-shaped, solid respectively at catheter lumen (201) both ends
Dingan County is equipped with light beam isolator (202) and condenser lens (203), and is also installed with the inside of catheter lumen (201) turning point
Galvanometer (204), the condenser lens (203) passes through inner chamber (103), and is fixedly mounted on inner chamber (103) wall, the light beam diaphragm
From beam expanding lens (205) is also installed between device (202) and galvanometer (204), pass through suspension on the outside of light beam isolator (202)
(206) optical fiber laser (207) is installed with, laser beam is with two straight lines caused by the optical fiber laser (207)
Propagated for symmetry axis is symmetrical, and angle of reflection of the laser beam on galvanometer (204) is equal, two laser beams it is anti-
Exit point is symmetrical as symmetrical centre using galvanometer (204) center.
A kind of 9. protective gas EGR suitable for 3D printing according to claim 8, it is characterised in that：It is described to shake
Catheter lumen (201) inwall is fixedly mounted on by triangular support bracket (208) on the inside of mirror (204), and in galvanometer (204) and triangle branch
The anti-bias snap ring of damping (209) is also equipped between support (208), triangular support bracket (208) and the anti-bias snap ring of damping (209) it
Between be also equipped with rotating ball (210), on the anti-bias snap ring of damping (209) install restraining position ring block (211), the rotating ball (210)
It is located in spacing ring (211), damping silica gel cotton (212) is also installed with inside the anti-bias snap ring of damping (209).
A kind of 10. protective gas EGR suitable for 3D printing according to claim 1, it is characterised in that：It is described
Test specimen ring (118) is also installed with the top of test specimen fixed pedestal (108), some groups are carved with the outside of the test specimen ring (118)
Interference line (119), the interference line (119) interfere line (119) to be in not arrange equidistantly in annular shape, the interference
Line (119) arranges the interference fringe distribution rule for being satisfied by optical-fiber laser.
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| CN201710939138.1A CN107639828A (en) | 2017-10-11 | 2017-10-11 | A kind of protective gas EGR suitable for 3D printing |
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| CN105252004A (en) * | 2015-10-19 | 2016-01-20 | 华南理工大学 | Smoke dust detection and purifying method and device applied in 3D printing sealed cabin |
| JP2017177557A (en) * | 2016-03-30 | 2017-10-05 | キヤノン株式会社 | Three-dimensional molding device |
| CN106546604A (en) * | 2016-11-02 | 2017-03-29 | 山西大学 | A kind of bronze surface and Sub-surface defect detection method and system |
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