CN204639130U - The equipment of the fusing of a kind of single casing selective laser and milling Compound Machining - Google Patents
The equipment of the fusing of a kind of single casing selective laser and milling Compound Machining Download PDFInfo
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- CN204639130U CN204639130U CN201420788032.8U CN201420788032U CN204639130U CN 204639130 U CN204639130 U CN 204639130U CN 201420788032 U CN201420788032 U CN 201420788032U CN 204639130 U CN204639130 U CN 204639130U
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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
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Abstract
The utility model discloses the equipment of the fusing of a kind of single casing selective laser and milling Compound Machining, comprise selective laser melting forming device and vertical knee-type milling machine device, central control system, vertical knee-type milling machine device is positioned at forming room; Vertical knee-type milling machine device also comprises a magazine, and magazine is positioned at the right side of forming room outside; Laser instrument is positioned at the right side of selective laser melting forming device forming room; Collimator and extender mirror, optical lens, scanning galvanometer are placed in the top of forming room; Optical lens is positioned at forming room top and is embedded in forming room's outer wall, seals combine with forming room outer wall; This equipment improves dimensional accuracy and the surface quality of forming part, thus achieves the combination increasing material manufacture and high accuracy Milling Process; Adopt simultaneously and to prevent in laser processing procedure metal dust and waste heat on the impact of milling cutter by automatic tool changer valve and tool changing mouth closed, ensure that the quality of milling cutter and extend its service life.
Description
Technical field
The utility model relates to and the present invention relates to metal parts 3D printing technique, particularly relates to the equipment of the fusing of a kind of single casing selective laser and milling Compound Machining.
Background technology
Selective laser fusing (Selective Laser Melting, SLM) technology is the cutting edge technology increasing material manufacture also known as " metal 3D printing technique ", utilize the laser focusing bundle of diameter 30 ~ 50 microns, metal or alloy powder constituency is successively melted, be piled into the entity of a metallurgical binding, dense structure, thus obtain almost arbitrary shape, there is the metal function part of complete metallurgical binding.
SLM equipment is primarily of several part composition such as laser instrument, light path system, seal molding room, machine driven system, control system.Its technological process is as follows: first three-dimensional CAD model is carried out the discrete and planning parameters of scanning paths of section, obtains the slicing profile information of controlled controlling laser beam scanning; Secondly, slicing profile information successively called in by computer, and by scanning galvanometer, control laser beam optionally by-line overlap joint scans selection area on bisque, forming surface profile, is not irradiated with a laser the powder in region still in loose shape.After one deck machines, powder cylinder rising micron, formation cylinder reduces the height of slice thickness, and paving is whitewashed and scraped forming platform by powder from powder cylinder, and the powder smelting that laser will newly spread, combines together with last layer.Repeat said process, until forming process completes, obtain the 3-dimensional metal part identical with three-dimensional entity model.
SLM technology forms entity by overlap joint after the powder of deposite metal, and the metal after metal material melting, due to the effect of capillary force, forms the molten road of Proximal surface.Under certain overlapping rate, the final surface of profiled member has a lot of rough striated, and cause the metal parts surface roughness of selective laser melt-forming to be generally Ra15-50 μm, hot spot is larger, and formed precision is poorer, far can not meet actual requirement.Although small light spot can improve formed precision a little, adopt small light spot seriously can reduce shaping efficiency.Existing SLM equipment is difficult to produce the high-precision metal part met the demands, and this seriously constrains the application & development of SLM technology.Therefore, people are finding a kind of high accuracy, high efficiency solving complicated metallic element always and are increasing material manufacture method and equipment.
Summary of the invention
The purpose of this utility model is the shortcoming and defect overcoming above-mentioned prior art, a kind of single casing selective laser is provided to melt the equipment with milling Compound Machining, be the defect overcoming existing SLM technology, realize the high efficiency of complicated metal parts, high accuracy straight forming.
The utility model is achieved through the following technical solutions:
The equipment of the fusing of a kind of single casing selective laser and milling Compound Machining, comprise selective laser melting forming device and vertical knee-type milling machine device, central control system, selective laser melting forming device comprises optical system, paving powder system, forming room 14 and moulding cylinder 18, and selective laser melting forming device and vertical knee-type milling machine device share same central control system.
Described vertical knee-type milling machine device is positioned at forming room 14, and vertical knee-type milling machine device also comprises a magazine 20, and magazine 20 is positioned at the right side of forming room outside;
Described optical system comprises laser instrument 5, collimator and extender mirror 4, optical lens 3, the scanning galvanometer 2 that light path successively connects;
Described laser instrument 5 is positioned at the right side of selective laser melting forming device forming room 14; Described collimator and extender mirror 4, optical lens 3, scanning galvanometer 2 are placed in the top of forming room 14;
Described optical lens 3 is positioned at forming room 14 top and is embedded in forming room 14 outer wall, seals combine with forming room 14 outer wall;
Described vertical knee-type milling machine device comprises milling X direction guiding rail 8, milling Z-direction guide rail 9, milling Y-direction guide rail 10, milling spindle 11; Described milling X direction guiding rail 8 is fixed on the rear upper of forming room 14, and described milling Y-direction guide rail 10 links together with milling X direction guiding rail 8, and by driving mechanisms control, it moves in X direction; Described milling Z-direction guide rail 9 links together with milling Y-direction guide rail 10, realizes the movement of Y-direction; Described milling spindle 11 is positioned on milling Z-direction guide rail 9, realizes its motion in Z-direction;
Described paving powder system also comprises powder bottle 1 and a power spreading device 15 be arranged on paving powder guide rail 16; Powder bottle 1 is placed in forming room 14 upper left, and powder bottle 1 also comprises one to the automatic powder feeding passage 7 of power spreading device 15 conveying powder.
Described moulding cylinder 18 is positioned at the bottom of forming room 14, and is controlled its lifting by central control system.
Described vertical knee-type milling machine device has a magazine 20; Magazine 20 comprises chain type knife rest 22, knife rest drive motors 21 and milling cutter 23, and milling cutter 23 is arranged on chain type knife rest 22, and knife rest drive motors 21 drives the motion of chain type knife rest 22.
Described magazine 20 is connected with tool changing mouth 13 by automatic tool changer valve 12 with forming room 14.
Described tool changing mouth 13 is cylindrical channel, and it is opened and is realized by the closed of automatic tool changer valve 12 with closing; When tool changing, automatic tool changer valve 12 is opened, and now tool changing mouth 13 is in opening state; After tool changing terminates, automatic tool changer valve 12 closes, and now tool changing mouth 13 is in closed condition.
Described equipment also comprises oxygen content detector, pressure-detecting device, vacuum extractor, nitrogen gas generating device.
Described milling spindle 11 does 180 ° of rotations along its center.
A manual snap close 6 is provided with between automatic powder feeding passage 7 and powder bottle 1.
Adopt the method for the said equipment processing metal part as follows:
(1), to part three-dimensional CAD model to be processed process, first, select suitable thickness application Magics software to carry out hierarchy slicing according to processing request; Then in units of every 20 layer data, carry out the packing of sheet layer data, tool-information and milling profile information are added to each bag data; Finally planning parameters of scanning paths is carried out to the lamella profile of each bag, after completing, import 3D printer, prepare to process;
(2), start 3D printer, first, industrial computer controls automatic powder feeding passage 7 pairs of power spreading devices 15 and adds powder, closedown automatic powder feeding passage 7 after completing; Open oxygen content detector, pressure-detecting device and vacuum extractor, protective gas is filled with to closing vacuum extractor and open nitrogen gas generating device during-15KPa when gas pressure in forming room 14 reduces, stop when air pressure rises to 20KPa being filled with protective gas, then continue to open vacuum extractor, so move in circles;
Processing is started when oxygen content is reduced to below 0.1% in forming room 14, first, power spreading device 15 is a powder on forming surface upper berth, metal dust 19 thus fusing formation one layer entity, after every shaping one deck, namely power spreading device 15 spreads a powder, and so circulated after 20 layers of powder processing, central control system sends signal, scanning battle array mirror 2 and laser instrument 5 quit work, and power spreading device 15 returns to left side initial position;
(3), vertical knee-type milling machine device starts working, and first, central control system controls milling spindle 11 along guide rail movement to tool changing mouth 13 position according to process data information; Milling spindle 11 first moves along milling X direction guiding rail 8, move along milling Y-direction guide rail 10 again, finally move along milling Z-direction guide rail 9, then the knife rest drive motors 21 in magazine 20 drives chain type knife rest 22 to move, the milling cutter 23 of correspondence is aimed at tool changing mouth 13, automatic tool changer valve 12 is opened, and milling spindle 11 carries out tool changing operation;
After tool changing completes, milling spindle 11 is carried milling cutter 23 secretly and is exited tool changing mouth 13, and automatic tool changer valve 12 closes, and the exchange edge of a knife 13 is closed; Then the metal parts 17 that milling spindle 11 starts having processed under the control of central control system carries out Milling Process, carries out milling and mill the rough part of forming surface to the conformal passage of metal parts 17 inside;
After milling completes, milling spindle 11 returns initial position with milling cutter 23;
(4), be so cycled to repeat above-mentioned steps (two), (three) carry out Laser Processing and Milling Processes, until whole process completes.
The utility model, relative to prior art, has following advantage and effect:
1, power spreading device 15 of the present utility model is funneling roller Pu Fen mechanism, and adopts the device of automatic Loading powder, has and need not shut down, and work is omnidistance can realize the advantage adding powder at any time;
2, the utility model selective laser melting forming device, adopts single casing, only has a moulding cylinder in forming room, not only greatly save space, alleviate the weight of equipment, and significantly can shorten paving powder stroke, this improves the efficiency of about 30% than double-cylinder structure.
3, the utility model selective laser melting forming device, adopts single casing and vertical knee-type milling machine device Compound Machining, and can apply selective laser melting appartus carries out free manufacture on the one hand, can realize precision milling processing again on the other hand with vertical knee-type milling machine device; Carry out Milling Process to the part freely manufactured, this not only substantially increases precision and the surface quality of metal parts, and can save the sequent surface process of profiled member, significantly improves operating efficiency.Larger hot spot can also be adopted in addition to carry out moulding, and then adopt precision cutting to carry out fine finishining, improve dimensional accuracy and the surface quality of forming part, and the part of inner complex passages can be manufactured, this cost and don't can Forming Quality be reduced of significantly saving time again.
4, milling spindle and driving mechanism thereof are placed in forming room by the utility model, and magazine to be placed in outside forming room and to be connected with forming room with automatic tool changer valve by tool changing mouth.When carrying out 3D print procedure, automatic tool changer valve closing tool changing mouth, when milling spindle carries out tool changing operation by tool changing mouth, automatic tool changer valve open.The dust that produces in 3D print procedure and waste heat can be avoided like this to enter tool magazine, cutter is polluted, and reduces quality and the service life of cutter.
Accompanying drawing explanation
Fig. 1 is that the utility model faces structural representation.
Fig. 2 is vertical knee-type milling machine device exchanging knives process schematic diagram of the present utility model.
Fig. 3 is the utility model milling process schematic diagram.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model is more specifically described in detail.
Embodiment
As Figure 1-3.The equipment of the fusing of the utility model single casing selective laser and milling Compound Machining, comprise selective laser melting forming device and vertical knee-type milling machine device, central control system, selective laser melting forming device comprises optical system, paving powder system, forming room 14 and moulding cylinder 18, and selective laser melting forming device and vertical knee-type milling machine device share same central control system.
Described vertical knee-type milling machine device is positioned at forming room 14, and vertical knee-type milling machine device also comprises a magazine 20, and magazine 20 is positioned at the right side of forming room outside;
Described optical system comprises laser instrument 5, collimator and extender mirror 4, optical lens 3, the scanning galvanometer 2 that light path successively connects;
Described laser instrument 5 is positioned at the right side of selective laser melting forming device forming room 14; Described collimator and extender mirror 4, optical lens 3, scanning galvanometer 2 are placed in the top of forming room 14;
Described optical lens 3 is positioned at forming room 14 top and is embedded in forming room 14 outer wall, seals combine with forming room 14 outer wall;
Described vertical knee-type milling machine device comprises milling X direction guiding rail 8, milling Z-direction guide rail 9, milling Y-direction guide rail 10, milling spindle 11; Described milling X direction guiding rail 8 is fixed on the rear upper of forming room 14, and described milling Y-direction guide rail 10 links together with milling X direction guiding rail 8, and by driving mechanisms control, it moves in X direction; Described milling Z-direction guide rail 9 links together with milling Y-direction guide rail 10, realizes the movement of Y-direction; Described milling spindle 11 is positioned on milling Z-direction guide rail 9, realizes its motion in Z-direction;
Described paving powder system also comprises powder bottle 1 and a power spreading device 15 be arranged on paving powder guide rail 16; Powder bottle 1 is placed in forming room 14 upper left, and powder bottle 1 also comprises one to the automatic powder feeding passage 7 of power spreading device 15 conveying powder.Powder bottle 1 is for storing metal dust 19.
Described power spreading device 15 adopts funneling idler wheel mechanism, and funnel is positioned at roller top for storing certain metal dust, and roller is used for the paving powder of powder; Metal dust 19 to tile moulding cylinder 18 top for driving power spreading device 15 by paving powder guide rail 16, after the tiling work completing 20 layers of powder, is returned to initial position, turns to Milling Process.
Described moulding cylinder 18 is positioned at the bottom of forming room 14, and is controlled its lifting by central control system.The space of forming room 14 to be the space of Laser Processing be also Milling Process.Described moulding cylinder 18 is positioned at the bottom of forming room 14, shaping for support metal part 17.This moulding cylinder 18 can control high-precision servo motor by general industrial computer (not shown) and be elevated.
Described vertical knee-type milling machine device has a magazine 20; Magazine 20 comprises chain type knife rest 22, knife rest drive motors 21 and milling cutter 23, and milling cutter 23 is arranged on chain type knife rest 22, and knife rest drive motors 21 drives the motion of chain type knife rest 22.Milling cutter 23 can select model and quantity as required; Chain type knife rest 22 carries out shuttling movement by knife rest drive motors 21.
Described magazine 20 is connected with tool changing mouth 13 by automatic tool changer valve 12 with forming room 14; Automatic tool changer valve and tool changing mouth are in closed condition when Laser Processing and Milling Process, only just can open when milling spindle carries out tool changing.
Described tool changing mouth 13 is cylindrical channel, and it is opened and is realized by the closed of automatic tool changer valve 12 with closing; When tool changing, automatic tool changer valve 12 is opened, and now tool changing mouth 13 is in opening state; After tool changing terminates, automatic tool changer valve 12 closes, and now tool changing mouth 13 is in closed condition; This object is to prevent the metallic dust that produces in process and waste heat from producing harmful effect to the accurate milling cutter in magazine.
Described equipment also comprises oxygen content detector, pressure-detecting device, vacuum extractor, nitrogen gas generating device, gas circulating purifying device (not shown).Metal parts 17 start shaping before, carry out deoxygenation program, open oxygen content detector (comprising its reponse system), vacuum extractor will be pumped into the low pressure state of-15KPa in forming room 14, then nitrogen gas generating device starts and is filled with nitrogen, when air pressure rises to 20KPa, close nitrogen and be filled with, continue to start vacuum extractor; Iterative cycles like this, until open procedure when oxygen content is reduced to below 0.1% in forming room 14 and start gas circulating purifying device.In process, gas circulating purification system works always; oxygen content in oxygen content monitoring device Real-Time Monitoring forming room 14; along with shaping carrying out; oxygen content in forming room may produce fluctuation, and when exceeding reliable content range, oxygen content detector sends feedback signal; start vacuum extractor and nitrogen gas generating device; reduce forming room 14 internal gas pressure on the one hand, pass into protection gas on the other hand, object is all reduce oxygen content in forming room 14.
Described milling spindle 11 does 180 ° of rotations along its center.Thus not only can carry out 90 ° when tool changing and be rotated counterclockwise, Milling Process can also be carried out to the piece surface of labyrinth.Vertical knee-type milling machine device can adopt four axle drive systems, and the arbitrary orientation realizing milling cutter 23 arrives and cuts.
A manual snap close 6 is provided with, for powder bottle 1 is arranged on automatic powder feeding passage 7 between automatic powder feeding passage 7 and powder bottle 1.
If Fig. 2 is vertical knee-type milling machine device exchanging knives process schematic diagram.The exchanging knives process of milling spindle 11 comprise unload cutter and dress cutter.When unloading cutter, first central control system rotates a certain angle according to processed file data message control knife rest drive motors 21, the empty cutter spacing of this milling cutter 23 corresponding is made to aim at tool changing mouth 13, then milling spindle 11 moves along milling X direction guiding rail 8, milling Y-direction guide rail 10 and aims at tool changing mouth 13, milling spindle 11 is rotated counterclockwise 90 ° around its center, and now automatic tool changer valve 12 is opened, and tool changing mouth 13 is opened, milling spindle 1111 stretches into magazine 20 from tool changing mouth 13, completes and unloads cutter action; During dress cutter, first central control system controls to rotate to an angle according to the data message control knife rest drive motor 21 of processed file, make milling cutter 23 to be installed aim at tool changing mouth 13, then milling spindle 11 gos deep into magazine 20 from tool changing mouth 13, completes the action of dress cutter.After completing tool changing action, automatic tool changer valve 12 closes, and tool changing mouth 13 is closed.
If Fig. 3 is milling process schematic diagram.After machining 20 thickness, power spreading device 15 turns back to left side, and laser instrument 5 stops bright dipping, and milling spindle 11 selects corresponding milling cutter 23 according to processed file data message, transports to metal and becomes the surface of part 17 to start to carry out Milling Process according to data message.
The method of the said equipment processing metal part is adopted specifically to realize by following steps:
(1), to part three-dimensional CAD model to be processed process, first, select suitable thickness application Magics software to carry out hierarchy slicing according to processing request; Then in units of every 20 layer data, (also can select other numbers according to processing request) and carry out the packing of sheet layer data, tool-information and milling profile information are added to each bag data; Finally planning parameters of scanning paths is carried out to the lamella profile of each bag, after completing, import 3D printer, prepare to process;
(2), start 3D printer, first, industrial computer controls automatic powder feeding passage 7 pairs of power spreading devices 15 (funneling roller) and adds powder, closedown automatic powder feeding passage 7 after completing; Open oxygen content detector, pressure-detecting device and vacuum extractor, protective gas is filled with to closing vacuum extractor and open nitrogen gas generating device during-15KPa when gas pressure in forming room 14 reduces, stop when air pressure rises to 20KPa being filled with protective gas, then continue to open vacuum extractor, so move in circles;
Processing is started when oxygen content is reduced to below 0.1% in forming room 14, first, power spreading device 15 is a powder on forming surface upper berth, metal dust 19 thus fusing formation one layer entity, after every shaping one deck, namely power spreading device 15 spreads a powder, and so circulated after 20 layers of powder processing, central control system sends signal, scanning battle array mirror 2 and laser instrument 5 quit work, and power spreading device 15 returns to left side initial position;
(3), vertical knee-type milling machine device starts working, and first, central control system controls milling spindle 11 along guide rail movement to tool changing mouth 13 position according to process data information; Milling spindle 11 first moves along milling X direction guiding rail 8, move along milling Y-direction guide rail 10 again, finally move (three axle feedings also can be adopted synchronously to carry out raising the efficiency) along milling Z-direction guide rail 9, then the knife rest drive motors 21 in magazine 20 drives chain type knife rest 22 to move, the milling cutter 23 of correspondence is aimed at tool changing mouth 13, automatic tool changer valve 12 is opened, and milling spindle 11 carries out tool changing operation;
After tool changing completes, milling spindle 11 is carried milling cutter 23 secretly and is exited tool changing mouth 13, and automatic tool changer valve 12 closes, and the exchange edge of a knife 13 is closed; Then the metal parts 17 that milling spindle 11 starts having processed under the control of central control system carries out Milling Process, carries out milling and mill the rough part of forming surface to the conformal passage of metal parts 17 inside;
After milling completes, milling spindle 11 returns initial position with milling cutter 23;
(4), be so cycled to repeat above-mentioned steps (two), (three) carry out Laser Processing and Milling Processes, until whole process completes.
As mentioned above, just the utility model can be realized preferably.
Embodiment of the present utility model is not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present utility model and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (9)
1. the equipment of a single casing selective laser fusing and milling Compound Machining, comprise selective laser melting forming device and vertical knee-type milling machine device, central control system, selective laser melting forming device comprises optical system, paving powder system, forming room (14) and moulding cylinder (18); It is characterized in that:
Described vertical knee-type milling machine device is positioned at forming room (14); Vertical knee-type milling machine device also comprises a magazine (20), and magazine (20) is positioned at the right side of forming room outside;
Described optical system comprises laser instrument (5), collimator and extender mirror (4), optical lens (3), the scanning galvanometer (2) that light path successively connects;
Described laser instrument (5) is positioned at the right side of selective laser melting forming device forming room (14); Described collimator and extender mirror (4), optical lens (3), scanning galvanometer (2) are placed in the top of forming room (14);
Described optical lens (3) is positioned at forming room (14) top and is embedded in forming room (14) outer wall, seals combine with forming room (14) outer wall;
Described vertical knee-type milling machine device comprises milling X direction guiding rail (8), milling Z-direction guide rail (9), milling Y-direction guide rail (10), milling spindle (11); Described milling X direction guiding rail (8) is fixed on the rear upper of forming room (14), and described milling Y-direction guide rail (10) and milling X direction guiding rail (8) link together, and by driving mechanisms control, it moves in X direction; Described milling Z-direction guide rail (9) and milling Y-direction guide rail (10) link together, and realize the movement of Y-direction; Described milling spindle (11) is positioned on milling Z-direction guide rail (9), realizes its motion in Z-direction.
2. single casing selective laser according to claim 1 fusing and the equipment of milling Compound Machining, is characterized in that: described paving powder system also comprises powder bottle (1) and a power spreading device (15) be arranged on paving powder guide rail (16); Powder bottle (1) is placed in forming room (14) upper left, and powder bottle (1) also comprises one to the automatic powder feeding passage (7) of power spreading device (15) conveying powder.
3. the equipment of single casing selective laser according to claim 1 fusing and milling Compound Machining, it is characterized in that: described moulding cylinder (18) is positioned at the bottom of forming room (14), and is controlled its lifting by central control system.
4. single casing selective laser according to any one of claim 1 to 3 fusing and the equipment of milling Compound Machining, is characterized in that: described vertical knee-type milling machine device has a magazine (20); Magazine (20) comprises chain type knife rest (22), knife rest drive motors (21) and milling cutter (23), milling cutter (23) is arranged on chain type knife rest (22), and knife rest drive motors (21) drives the motion of chain type knife rest (22).
5. single casing selective laser according to claim 4 fusing and the equipment of milling Compound Machining, is characterized in that: described magazine (20) is connected with tool changing mouth (13) by automatic tool changer valve (12) with forming room (14).
6. single casing selective laser according to claim 5 fusing and the equipment of milling Compound Machining, is characterized in that:
Described tool changing mouth (13) is cylindrical channel, and it is opened and is realized by the closed of automatic tool changer valve (12) with closing; When tool changing, automatic tool changer valve (12) is opened, and now tool changing mouth (13) is in opening state; After tool changing terminates, automatic tool changer valve (12) closes, and now tool changing mouth (13) is in closed condition.
7. single casing selective laser according to claim 4 fusing and the equipment of milling Compound Machining, is characterized in that: described equipment also comprises oxygen content detector, pressure-detecting device, vacuum extractor, nitrogen gas generating device.
8. single casing selective laser according to claim 4 fusing and the equipment of milling Compound Machining, is characterized in that: described milling spindle (11) does 180 ° of rotations along its center.
9. single casing selective laser according to claim 2 fusing and the equipment of milling Compound Machining, is characterized in that: be provided with a manual snap close (6) between described automatic powder feeding passage (7) and powder bottle (1).
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| CN104493491A (en) * | 2014-12-12 | 2015-04-08 | 华南理工大学 | Equipment and method for single-cylinder type selective laser melting and milling composite processing |
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| CN104493491A (en) * | 2014-12-12 | 2015-04-08 | 华南理工大学 | Equipment and method for single-cylinder type selective laser melting and milling composite processing |
| CN105414981A (en) * | 2015-12-23 | 2016-03-23 | 华中科技大学 | Electric arc adding and milling device |
| CN105945578A (en) * | 2016-05-17 | 2016-09-21 | 西安智熔金属打印系统有限公司 | Electronic beam composite added material manufacturing device |
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