CN103911611B - Selective laser melting power spreading device - Google Patents
Selective laser melting power spreading device Download PDFInfo
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- CN103911611B CN103911611B CN201410070571.2A CN201410070571A CN103911611B CN 103911611 B CN103911611 B CN 103911611B CN 201410070571 A CN201410070571 A CN 201410070571A CN 103911611 B CN103911611 B CN 103911611B
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Abstract
The invention discloses a kind of selective laser melting power spreading device, comprise for splendid attire wait spread powder funneling paving powder storehouse and for regulating the setting device of at least meal outlet place powder pressure size in described funneling paving powder storehouse, selective laser melting power spreading device of the present invention, adopt the paving powder storehouse of funnel structure, vertically arrange with processing platform, compared with power spreading device of the prior art, compact construction is simple, spread powder no-idle running back and forth, the driving energy needed for power spreading device motion can be saved, reduce paving powder energy consumption, improve paving powder efficiency; And bottom powder is as paving powder source in funneling paving powder storehouse, this amount of powder is squeezed, and to act on therefore pressure comparatively large, can improve the compactness spreading powder, and then raising forming parts quality; Also can be applicable to the research of powder flowbility, effectively measure various factors sprawls rear compactness impact on powder.
Description
Technical field
The present invention relates to a kind of metal powder laser fusing shaping technical field, particularly relate to a kind of selective laser melting power spreading device.
Background technology
Metal powder laser fusing shaping system also known as 3D printer, because of its can shaped structure complexity, the metallic element that can directly use and obtain extensive concern, and be predicted to be one of gordian technique that may cause " the third time Industrial Revolution ".Paving powder is an important ring of selective laser melting, paving powder mode is utilized to ensure the levelness of bisque, homogeneity is the solution that metal current powder laser fusing shaping system generally adopts, the compactness of paving powder influential effect powder, and then directly affect forming parts quality, in paving powder process, the compactness of powder is relevant with factors such as the flowing of powder and suffered pressure thereof, power spreading device of the prior art generally comprises for powder storehouse, processing storehouse, recovery bin and paving powder scraper, wherein process at the bottom of the storehouse in storehouse is processing platform, by supplying the rising at the bottom of storehouse, powder storehouse, decline and the moving horizontally of scraper of processing platform realize for powder and paving powder, excess powder is scraped on processing plane, unnecessary powder is then scraped in recovery bin, its defect is: for powder storehouse, processing storehouse and recovery bin three are along same level arranged, one-piece construction space is large, paving powder scraper movement path is long, and scraper to complete once spread powder need move back and forth, produce an idle motion, cause paving powder energy consumption height and inefficient problem, supply metal-powder in powder storehouse to be natural packing state simultaneously, and originate as paving powder for top layer powder in powder storehouse all the time, this part metals powder pressure is little, paving powder compactness is poor, affect forming parts quality.
Therefore, for solving the problem, needing a kind of selective laser melting power spreading device, reduction floor space, reducing paving powder energy consumption, improving the compactness of paving powder efficiency and powder, improve forming parts quality.
Summary of the invention
In view of this, the object of this invention is to provide a kind of selective laser melting power spreading device, floor space is little, can reduce paving powder energy consumption, improve the compactness of paving powder efficiency and powder, improve forming parts quality.
Selective laser melting power spreading device of the present invention, comprise for splendid attire wait to spread powder funneling paving powder storehouse and for regulate comprise funneling paving powder storehouse meal outlet funneling paving powder storehouse inner chamber in the setting device of powder pressure size;
Further, described funneling paving powder storehouse comprises casing and is located at least one adjustment door-plate of described box house; Described casing comprises the coaming plate that surrounding encloses; Described coaming plate comprises at least one pair of parallel side plate be oppositely arranged; Described adjustment door-plate upper end thereof is between these parallel two side plates relatively;
Further, described adjustment door-plate is two and horizontal symmetrical is arranged, and two regulate door-plate to enclose with parallel two relative side plates waits that spreading powder holds room; Two regulate the gap between edge, door-plate lower end to form described meal outlet;
Further, described setting device comprises the screw pair rotated for promoting two adjustment door-plates; The screw mandrel of described screw pair is horizontally disposed with and is rotationally connected with casing along the direction single degree of freedom being parallel to side plate; The nut of screw pair is arranged with regulating door-plate one_to_one corresponding, and the equal single degree of freedom of each nut is slidably connected to casing and is supported in corresponding adjustment doors backboard to waiting to spread the side that powder holds room; The partial threads direction that screw mandrel is positioned at two adjustment door-plate plane of symmetry both sides is contrary;
Further, described screw pair arranges two altogether and symmetrical is arranged in two two ends, edge, adjustment door-plate lower end;
Further, described setting device also comprises the worm couple for driving two screw mandrel synchronous axial system; The worm screw of described worm couple is horizontally disposed with and is rotationally connected with casing along the direction single degree of freedom perpendicular to screw mandrel; The worm gear of worm couple is coaxially fixed on screw mandrel one to one;
Further, one end of described worm screw stretches out in casing outside formation knob and is fixed with inclinometer dial plate;
Further, described nut is fixed with the thimble for supporting corresponding adjustment door-plate;
Further, described funneling paving powder storehouse also comprises two wings being fixed on bottom half; Two wings are parallel regulates the plane of symmetry of door-plate to be symmetrical arranged relatively and relative to two; Described funneling paving powder storehouse also comprises and is connected to adjustment doors backboard to waiting that spreading powder holds extension spring between the side of room and casing;
Further, fillet is led at the edge, lower end of described adjustment door-plate; The outer end of described thimble is bulb.
The invention has the beneficial effects as follows: selective laser melting power spreading device of the present invention, adopt the paving powder storehouse of funnel structure, vertically arrange with processing platform, compared with power spreading device of the prior art, compact construction is simple, spreads powder no-idle running back and forth, can save the driving energy needed for power spreading device motion, reduce paving powder energy consumption, improve paving powder efficiency; And bottom powder is as paving powder source in funneling paving powder storehouse, this amount of powder is squeezed, and to act on therefore pressure comparatively large, can improve the compactness spreading powder, and then raising forming parts quality; Also can be applicable to the research of powder flowbility, effectively measure exit powder pressure size sprawls rear compactness impact on powder.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is by matlab Software on Drawing
image.
Embodiment
Fig. 1 is structural representation of the present invention, Fig. 2 is the vertical view of Fig. 1, as shown in the figure: the selective laser melting power spreading device of the present embodiment, comprise for splendid attire wait to spread powder funneling paving powder storehouse and for regulate comprise funneling paving powder storehouse meal outlet funneling paving powder storehouse inner chamber in the setting device of powder pressure size; The funneling paving powder storehouse inner chamber comprising funneling paving powder storehouse meal outlet refers to that funneling paving powder storehouse inner chamber comprises the part of meal outlet, also can be understood as at least meal outlet place of funneling paving powder storehouse inner chamber; At least meal outlet place in funneling paving powder storehouse is angle of sides adjustable structure, regulate the gradient of this sidewall by setting device and then realize the adjustment of meal outlet place powder pressure size, the angle of this sidewall and vertical plane is less, less to the vertical component of meal outlet place powder, horizontal component is larger, the powder pressure at meal outlet place is increased, otherwise reduces; While regulating meal outlet place powder pressure size, also can realize the adjustment of meal outlet size, and then realize the control of meal outlet place powder mass flow; The selective laser melting power spreading device of the present embodiment also can be applicable to the research of powder flowbility, effectively measures exit powder pressure size sprawls rear compactness impact on powder.
In the present embodiment, described funneling paving powder storehouse comprises casing 1 and is located at least one adjustment door-plate 2 of described casing 1 inside; Described casing 1 comprises the coaming plate 3 that surrounding encloses; Described coaming plate 3 comprises at least one pair of parallel side plate 4 be oppositely arranged; Described adjustment door-plate 2 upper end thereof is between these parallel two side plates 4 relatively; Door-plate 2 is regulated to be obliquely installed, and it is in a certain angle between vertical plane, regulate the hinge of door-plate 2 vertical with these parallel two relative side plates 4, regulate door-plate 2 side along coordinating with zero-clearance between respective side panels 4, form reliable and stable powder and hold space, for the adjustment realizing meal outlet place powder pressure size provides condition, also can be applicable to the research of powder flowbility, effectively measure the impact of compactness after regulating door-plate 2 to sprawl powder in different angle situation.
In the present embodiment, described adjustment door-plate 2 is two and horizontal symmetrical is arranged, and two regulate door-plate 2 to enclose with parallel two relative side plates 4 waits that spreading powder holds room; Two regulate the gap between edge, door-plate 2 lower end to form described meal outlet, by the adjustment regulating the angle of inclination of two adjustment door-plates 2 to realize meal outlet place powder pressure and powder mass flow size, variable range is wide, and meal outlet place powder pressure is evenly distributed, and compactness is good; Also can be applicable to the research of powder flowbility, the size effectively measuring meal outlet sprawls the impact of rear compactness on powder.
In the present embodiment, described setting device comprises the screw pair rotated for promoting two adjustment door-plates 2; The screw mandrel 5 of described screw pair is horizontally disposed with and is rotationally connected with casing 1 along the direction single degree of freedom being parallel to side plate 4; The nut 6 of screw pair is arranged with regulating door-plate 2 one_to_one corresponding, and the equal single degree of freedom of each nut 6 is slidably connected to casing 1 and is supported in corresponding adjustment door-plate 2 and waits dorsad to spread the side that powder holds room; The partial threads direction that screw mandrel 5 is positioned at two adjustment door-plate 2 plane of symmetry both sides is contrary; Utilize the gearing-down of screw pair and auto-lock function more conveniently can realize regulating adjustment and the location at door-plate 2 angle of inclination, use properties is good.
In the present embodiment, described screw pair arranges two altogether and symmetrical is arranged in two two ends, edge, adjustment door-plate 2 lower end, do not hinder the flowing of powder, and make two adjustment door-plate 2 uniform force, wider paving powder width can be adapted to, make adjustment door-plate 2 Stability Analysis of Structures, avoid regulating door-plate 2 to be out of shape, ensure to regulate the zero-clearance matching property between door-plate 2 and coaming plate 3.
In the present embodiment, described setting device also comprises the worm couple for driving two screw mandrel 5 synchronous axial system; The worm screw 7 of described worm couple is horizontally disposed with and is rotationally connected with casing 1 along the direction single degree of freedom perpendicular to screw mandrel 5; The worm gear 8 of worm couple is coaxially fixed on screw mandrel 5 one to one; Rotary worm 7 can realize the synchronization control of two screw pairs, and produces secondary speed-reducing and self-locking, can realize regulating the fine setting at door-plate 2 angle of inclination and improving the positioning precision regulating door-plate 2.
In the present embodiment, one end of described worm screw 7 stretches out in casing 1 outside and forms knob and be fixed with inclinometer dial plate, may correspond to inclinometer dial plate and the starting position of worm screw 7 and meal outlet initial opening corresponding are with it set, and the change curve of worm screw 7 corner and meal outlet aperture is drawn by computing, make to read meal outlet opening value accurately by inclinometer dial plate and operate worm screw 7 external part control meal outlet to reach target aperture.
In the present embodiment, described nut 6 is fixed with the thimble 9 for supporting corresponding adjustment door-plate 2, by to thimble 9 with regulate the structure of door-plate 2 contact jaw to carry out appropriate design meal outlet aperture to be moved with nut 6 forms regular change, be convenient to fine setting and the accurately control of meal outlet aperture.
In the present embodiment, described funneling paving powder storehouse also comprises two wings 10 be fixed on bottom casing 1; Two wings 10 are parallel regulates the plane of symmetry of door-plate 2 to be symmetrical arranged relatively and relative to two; Described funneling paving powder storehouse also comprise be connected to regulate door-plate 2 to wait dorsad spreading powder holds extension spring 11 between the side of room and casing 1; Arrange two wings 10 to make all can carry out paving powder in whole power spreading device reciprocatory movement, without idle running, paving powder can be made full use of and drive energy, improve paving powder efficiency.
In the present embodiment, fillet is led at the edge, lower end of described adjustment door-plate 2; The outer end of described thimble 9 is bulb, and namely the outer end of thimble 9 is and the one end regulating door-plate 2 to contact regulate edge, door-plate 2 lower end fillet radius to be r
1, thimble 9 outer end Probe-radius is r
2, regulate door-plate 2 to be variable θ with the angle of vertical plane, regulate door-plate 2 to be c by the distance backed down, the variable quantity c of thimble 9 movement
x, regulate door-plate 2 by the initial distance c backed down
1, thimble 9 medullary ray and the vertical range h regulating door-plate 2 hinge, regulate door-plate 2 thickness δ, the angle that worm screw 7 is rotated is variable
the number of teeth z of worm screw 7
1the number of teeth z of worm gear 8
2, two regulate the distance a between door-plate 2 hinge, the minimum effective clearance b of meal outlet during flow of powder, the pitch P of screw mandrel 5, regulate door-plate 2 total length to deduct 2r
1for L, there is following relational expression:
By
By
Example:
By matlab Software on Drawing
as Fig. 3:
As shown in Figure 3, inclinometer dial plate rotates different angles can obtain corresponding flow of powder gap b value, and the linear lag is good.As following table:
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (7)
1. a selective laser melting power spreading device, is characterized in that: comprise for splendid attire wait to spread powder funneling paving powder storehouse and for regulate comprise funneling paving powder storehouse meal outlet funneling paving powder storehouse inner chamber in the setting device of powder pressure size; Described funneling paving powder storehouse comprises casing and is located at two adjustment door-plates of described box house; Described casing comprises the coaming plate that surrounding encloses; Described coaming plate comprises at least one pair of parallel side plate be oppositely arranged; Described adjustment door-plate upper end thereof is between these parallel two side plates relatively; Described adjustment doors plate level is symmetrical arranged, and two regulate door-plate to enclose with parallel two relative side plates waits that spreading powder holds room; Two regulate the gap between edge, door-plate lower end to form described meal outlet; Described setting device comprises the screw pair rotated for promoting two adjustment door-plates; The screw mandrel of described screw pair is horizontally disposed with and is rotationally connected with casing along the direction single degree of freedom being parallel to side plate; The nut of screw pair is arranged with regulating door-plate one_to_one corresponding, and the equal single degree of freedom of each nut is slidably connected to casing and is supported in corresponding adjustment doors backboard to waiting to spread the side that powder holds room; The partial threads direction that screw mandrel is positioned at two adjustment door-plate plane of symmetry both sides is contrary.
2. selective laser melting power spreading device according to claim 1, is characterized in that: described screw pair arranges two altogether and symmetrical is arranged in two two ends, edge, adjustment door-plate lower end.
3. selective laser melting power spreading device according to claim 2, is characterized in that: described setting device also comprises the worm couple for driving two screw mandrel synchronous axial system; The worm screw of described worm couple is horizontally disposed with and is rotationally connected with casing along the direction single degree of freedom perpendicular to screw mandrel; The worm gear of worm couple is coaxially fixed on screw mandrel one to one.
4. selective laser melting power spreading device according to claim 3, is characterized in that: one end of described worm screw stretches out in casing outside and forms knob and be fixed with inclinometer dial plate.
5. selective laser melting power spreading device according to claim 4, is characterized in that: described nut is fixed with the thimble for supporting corresponding adjustment door-plate.
6. selective laser melting power spreading device according to claim 5, is characterized in that: described funneling paving powder storehouse also comprises two wings being fixed on bottom half; Two wings are parallel regulates the plane of symmetry of door-plate to be symmetrical arranged relatively and relative to two; Described funneling paving powder storehouse also comprises and is connected to adjustment doors backboard to waiting that spreading powder holds extension spring between the side of room and casing.
7. selective laser melting power spreading device according to claim 6, is characterized in that: fillet is led at the edge, lower end of described adjustment door-plate; The outer end of described thimble is bulb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410070571.2A CN103911611B (en) | 2014-02-27 | 2014-02-27 | Selective laser melting power spreading device |
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|---|---|---|---|
| CN201410070571.2A CN103911611B (en) | 2014-02-27 | 2014-02-27 | Selective laser melting power spreading device |
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| CN103911611A CN103911611A (en) | 2014-07-09 |
| CN103911611B true CN103911611B (en) | 2016-03-23 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451669B (en) * | 2014-12-15 | 2017-01-25 | 华中科技大学 | Follow-up falling-type powder laying device |
| CN105127423B (en) * | 2015-09-07 | 2017-07-28 | 苏州西帝摩三维打印科技有限公司 | Selective laser melting 3 D-printing equipment |
| CN105386039B (en) * | 2015-11-13 | 2017-12-01 | 上海工程技术大学 | A kind of pressuring flat device for being used to adjust the preset powder layer thickness of laser melting coating |
| CN107055106B (en) * | 2016-12-19 | 2019-05-24 | 重庆紫竹桦苑建材有限公司 | Brick stacking machine |
| CN108723367B (en) * | 2018-06-18 | 2020-08-28 | 安徽太极计算机有限公司 | Selective laser melting system |
| CN109225729B (en) * | 2018-11-12 | 2023-10-03 | 中信戴卡股份有限公司 | Tool for wheel spraying reinforcement |
| CN114734064B (en) * | 2022-06-10 | 2022-08-26 | 航宇新材料智能制造研究院(山西)有限公司 | Vibration powder spreading device of selective melting forming equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100362132C (en) * | 2004-12-24 | 2008-01-16 | 西北工业大学 | Adjustable powder feeder |
| CN101158040B (en) * | 2007-11-09 | 2010-06-02 | 燕山大学 | Coaxial powder feeding apparatus |
| CN101513701B (en) * | 2009-04-07 | 2013-12-18 | 康术森 | High accuracy compulsory powder feeding device applied to welding cladding machine |
| CN103276390B (en) * | 2013-05-31 | 2015-09-30 | 重庆大学 | Metal powder laser fusing shaping system power spreading device |
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