CN105297008B - A kind of compound motion powder feeder - Google Patents
A kind of compound motion powder feeder Download PDFInfo
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- CN105297008B CN105297008B CN201510821048.3A CN201510821048A CN105297008B CN 105297008 B CN105297008 B CN 105297008B CN 201510821048 A CN201510821048 A CN 201510821048A CN 105297008 B CN105297008 B CN 105297008B
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
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Abstract
The invention discloses a kind of compound motion powder feeder, it includes cardan shaft, cylinder, powder hopper, sliding block and rotating disk；During work, the cylinder keeps air-tightness, powder in feeding powder hopper is stirred bar and broken up, powder is avoided to form arch structure in powder hopper, the helical runner of cardan shaft bottom pushes powder according to the speed reversion of setting, and enters by powder sinking tube in the powder groove of rotating disk and be gradually filled with powder groove, the sliding block is flattened to the powder in powder groove, rotating disk is rotated with final drive shaft, is suctioned out when the powder in powder groove is turned at the powder inlet of flour extraction pipe by flour extraction pipe, completes powder feeding process.By accurately controlling rotating ratio K between rotating disk and cardan shaft, powder feed amount is set to keep uniform.The present invention is promoted using helical runner and rotating disc type aspirates the compound motion automatic powder feeding system being combined, and is particularly suitable for use in poor fluidity or the powder without mobility, causes powder feed amount uniform and continuously adjustabe by above-mentioned composite motion.
Description
Technical field
The invention belongs to Materialbearbeitung mit Laserlicht and advanced manufacturing technology field, and in particular to a kind of compound motion powder feeder,
It is particularly suitable for poor fluidity or the automatic powder feeding without mobility powder, can meet laser melting coating and laser three-D manufacture skill
The need for art.
Background technology
Laser melting and coating technique is obtained a wide range of applications in the field such as metallurgy, machinery, Aeronautics and Astronautics, and laser melting coating is sent
Powder device is critical equipment therein, at present, and the automatic powder feeding device species used both at home and abroad is more, including：Scrape suction, scraper-type,
Spirally, drum type, capillary type, pneumatic type etc..Although above-mentioned different types of powder feeder respectively has feature, for flowing
Property difference fine powder, aluminium powder, alumina powder give the problem of all having different degrees of.
Powder research shows that the raw interparticle interaction of the relatively difficult labour of the particle more than 100 μm shows preferably stream
Dynamic property；And it is less than 100 μm of powder, their surface area is big, easily produces interparticle interaction, shows as mobility
Difference.The reason for fine powder poor fluidity is and the powder particle because the adhesive attraction that gravitation is produced between adjacent particles is stronger
Adhesive attraction between wall is also stronger；Meanwhile, the adhesive attraction of fine powder can show as interparticle coacervation, adhesion
Effect and cohesion are collectively referred to as cohesiveness, and the reason for powder produces cohesiveness includes：1. it is Van der Waals force under drying regime, quiet
Electric power；2. the bridge joint and capillarity under sucting wet state；3. density is small；4. surface roughness is big etc..
At present, conventional powder feeder is given more than 150 mesh (106 μm) preferable compared with corase meal effect；For the mesh of granularity 200
The fine powder of (75 μm) below, because cohesiveness causes by force its poor fluidity even without mobility, easily makes in powder hopper
Into blocking, also it is difficult to reach satisfied powder feeding effect even if using puddler.Mobility of the powder in powder feeder is also pacified with it
Breath angle is relevant, and the definition of angle of repose is：Be piled into cone when powder is fallen from funnel, the bus of the cone and horizontal plane it
Between angle be referred to as the angle of repose of powder.The angle of repose of 150~300 mesh stainless steel powders and aluminium powder is respectively 36 ° and 60 ° or so,
Angle of repose is bigger, and the mobility of powder is poorer.
Although packing auger can give the powder of poor fluidity, during the powder feeding of a pitch, it can produce
" pulsation phenomenon " of the even phenomenon of green powder mass flow discrepancy, i.e. spiral powder feeding.Its reason has two：First reason is to work as spiral
End face when moving to different positions, the position of powder falling circumferentially persistently changes, and easily causes the difference of feed amount, especially
It is that, when the horizontal lateral arrangement of screw rod, helical runner turns to different from the material stock space of barrel formation during different angles, powder
The resistance being subject to has larger difference, shows as powder feeding pulse occur near 65 ° of anglecs of rotation.Second reason is, due to flowing
Property difference powder in pipe " reunions ", " arching " effect it is stronger, under the impetus of helical runner, understand in different rotations
Corner produces random powder falling phenomenon, so as to cause the uneven of powder to give.
Although pure pneumatic powder-feeding method can solve blockage problem of the powder in funnel, its powder give precision compared with
Difference, it is impossible to meet the requirement of laser melting coating.
The powder of poor fluidity is difficult to the development and application that laser melting and coating technique has been had a strong impact on the problem of uniformly giving, because
This, research is suitable for the powder feeder that fine, poor fluidity powder equal and quantitative gives and had important practical significance.
The content of the invention
In order to solve the problem of existing powder feeder is difficult to uniformly give attritive powder, the invention discloses a kind of compound motion
Powder feeder, the device will not go out when giving the powder of the poor fluidities such as tiny alloy steel powder, Al alloy powder, ceramic powders
Existing clogging, powder feeding process stabilization, feed amount is uniform and continuously adjustabe.
The technical scheme is that：A kind of compound motion powder feeder, it is characterised in that：The powder feeder includes promoting
Axle, cylinder, powder hopper, sliding block and rotating disk；
The cylinder includes the upper and lower part of cylinder two；Powder hopper is located in lower shell, and one end of the cardan shaft passes through upper cylinder
Body is extend into lower shell, and puddler is arranged at cardan shaft bottom, and its bottom is provided with helical runner, and puddler and helical runner are located at
In powder hopper；The two ends of communicating pipe are located in upper and lower cylinder respectively, for making the stable gas pressure of upper and lower cylinder consistent；
Flour extraction pipe is installed, the powder inlet of flour extraction pipe and the powder sinking tube of powder hopper are located at sliding block two ends respectively on the lower shell
Top；The two ends of sliding block are respectively powder falling end and inhale powder end, and sliding block is arranged on rotating disk, and the rotation of sliding block and the centre of location are
The central shaft of rotating disk；Powder groove is provided with rotating disk, rotating disk is connected with final drive shaft, can be rotated under final drive shaft drive；
During work, the cylinder keeps air-tightness, and the powder sent into powder hopper is stirred bar and broken up, it is to avoid powder is in powder hopper
Middle formation arch structure, the helical runner of cardan shaft bottom pushes powder according to the speed reversion of setting, and is entered by powder sinking tube
The powder groove of rotating disk is interior and is gradually filled with powder groove, and the sliding block is flattened to the powder in powder groove, and rotating disk is rotated with final drive shaft,
Suctioned out when the powder in powder groove is turned at the powder inlet of flour extraction pipe by flour extraction pipe, complete powder feeding process.
The powder feeding principle of the present invention promotes for helical runner and rotating disc type aspirates the compound motion automatic powder feeding system being combined, special
Not Shi Yongyu poor fluidity or the powder without mobility, cause powder feed amount uniform by above-mentioned composite motion and continuous
It is adjustable.Specifically, the features of the present invention is embodied in the following aspects：
(1) powder feeder includes upper and lower two cylinders, is connected by inter panel；The barrel of upper and lower cylinder can be adopted
With transparent material (such as pmma material), to observe powder feeding process.
(2) the ratio between rotating speed of the powder feeder cardan shaft and rotating disk K needs to be constant, and this is the premise for ensureing uniform powder feeding
Condition, the constant is relevant with the size of cardan shaft lower part helical impeller and the size of rotating disk annular groove.
(3) one end of the cardan shaft can be connected on upper cover with external motor B, and be fixed on propulsion by the shaft shoulder
On axle support base, the puddler on cardan shaft is used to break up powder, it is to avoid powder forms arch structure, cardan shaft bottom in powder hopper
Helical runner according to setting speed reversion push powder.
During powder feeding, powder is quantitatively pushed in the powder sinking tube of powder hopper, and length in reserve is h in the powder sinking tube of powder hopper
Space, the length be h headspace, its effect is that the pulsation automatic powder feeding system of helical runner is changed into continuous uniform
Automatic powder feeding system, and meet following condition：h≥0.5d·tgα；Wherein, d is the interior warp of powder sinking tube, and α is the angle of repose of powder.
(4) sliding block is integral planar formula structure, and it is to flatten the powder in rotating disk annular groove, the rotation of sliding block that it, which is acted on,
With the central shaft that the centre of location is rotating disk.
(5) it is fixed with gear powder agglomates on the sliding block, the gear powder agglomates can be rubber, sponge or other elastomeric materials, by
In in the annular powder groove in rotating disk using elasticity gear powder agglomates rather than rigid guide block, it is to avoid fine powder fills to gear powder agglomates gap
Stuck phenomenon is filled out, the reliability of powder feeder is significantly improved.
The composite powder feeding mode that the present invention is promoted using helical runner and rotating disc type is aspirated, by setting cardan shaft and rotating disk
The ratio between rotating speed K, reserve the space length h in powder hopper powder sinking tube, it is to avoid the pulsation phenomenon of conventional helical powder feeder, realize
Helical runner promotes the uniform of powder to give；By integral planar formula slide block structure, and using flexible gear powder agglomates, it is to avoid fine powder
To the filling stuck phenomenon in gear powder agglomates gap, the reliability of powder feeder is significantly improved.The present invention successfully solves poor fluidity
Or the uniform powder feeding problem without mobility powder, the breakthrough of the powder feeding technology is for laser melting coating and the shaping of powder feeding formula laser three-D
Technology all has great importance.
Brief description of the drawings
The outer shape front view for the powder feeder that Fig. 1 provides for present example.
Fig. 2 is the top view of Fig. 1 powder feeders.
Fig. 3 is the powder feeder left view for removing housing.
Fig. 4 is the overall front view of cardan shaft.
Fig. 5 is the rotating disk top view for being provided with sliding block.
Fig. 6 is the front view of sliding block.
Fig. 7 is the top view of sliding block.
Fig. 8 is the upward view of sliding block.
Embodiment
The embodiment to the present invention is described further below in conjunction with the accompanying drawings.Herein it should be noted that for
The explanation of these embodiments is used to help understand the present invention, but does not constitute limitation of the invention.In addition, disclosed below
As long as each of the invention embodiment in involved technical characteristic do not constitute conflict each other and can just be mutually combined.
As shown in Figures 1 to 3, the compound motion powder feeder that present example is provided includes cardan shaft 1, communicating pipe 3, flour extraction pipe
4th, powder hopper 5, cylinder, sliding block 6 and rotating disk 7.
As shown in Fig. 1,3,4, cylinder includes the upper and lower part of cylinder two, and upper shell is by upper cover 51, upper barrel 52 and centre
Cover plate 55 is formed by connecting, and lower shell is made up of inter panel 55, lower barrel 56 and bottom plate 57.Band powder adding cap is provided with upper cover 51
51A powder input port 51B.Tube structure is simply compact, is easy to dismounting；Barrel can be made using transparent material, to facilitate observation
Powder feeding process.All barrel and cover plate junctions install sealing ring additional, and cylinder should keep overall air-tightness.
Cardan shaft 1 is fixed on upper cover 51 by support base 2, and the bottom of cardan shaft 1 is provided with puddler 11, puddler 11
Effect be to break up powder, increase its mobility, the bottom of cardan shaft 1 is provided with helical runner 12, and the effect of helical runner 12 is
Quantitatively push powder.Powder hopper 5 is located in lower shell, and puddler 11 and helical runner 12 are located in powder hopper 5；The one of flour extraction pipe 4
End is located in lower barrel 56, and is fixed on by support base on inter panel 55.
As shown in Fig. 3, Fig. 4 and Fig. 5, rotating disk 7 opens the disk with annular groove 73 in circumferential apertures for centre, positioned at lower shell
Interior, the upper end of final drive shaft 15 passes through bottom plate 57, and is fixedly connected by gland 71 with rotating disk 7, and pacifies on final drive shaft 15
Equipped with spring 72, rotating disk 7 is positioned by gland 71 and spring 72, sliding block 6 is combined with rotating disk 7 using the elastic force of spring 72,
Reduce the abrasion that rotating disk 7 is caused to sliding block 6.
As shown in figures 5-8, sliding block 6 is arranged on rotating disk 7, is the overall structure of the smooth bowknot shape in upper surface, sliding block
6 are used to flatten the powder in the interior annular groove 73 of rotating disk 7, the rotation of sliding block 6 and the central shaft that the centre of location is rotating disk 7.
One end of sliding block 6 is powder falling end, and powder falling end is provided with powder falling the through hole 61A, powder falling through hole 61A and powder hopper 5 of back taper
Powder sinking tube be connected；The other end of sliding block 6 is provided with the suction powder through hole 61B of back taper to inhale powder end thereon, the entrance of flour extraction pipe 4 with
Powder through hole 61B is inhaled to be connected；
The bottom of sliding block 6 is fixed with gear powder agglomates 62A, 62B, and described gear powder agglomates 62A, 62B can be elastic caoutchouc or sponge, gear
Powder agglomates 62A, 62B bottom are extend into rotating disk annular groove 73, using elasticity gear powder agglomates rather than just in the annular groove 73 of rotating disk 7
Property guide pad, it is to avoid fine powder significantly improves the reliability of powder feeder to the filling stuck phenomenon in gear powder agglomates gap.
Air inlet pipe is housed, for inputting inert gas into lower shell on lower shell (such as lower shoe).During communicating pipe 3 passes through
Between cover plate 55, make the stable gas pressure of upper and lower cylinder consistent.
Cylinder be may be mounted on housing 8, and main drive gear is provided with housing 8.
The top of the cardan shaft 1 can be connected with external motor B (being not drawn into figure), be moved under its drive, be turned
Disk 7 can be moved by final drive shaft 15 under the drive of external motor A (not drawn in figure).
The ratio between the rotating speed of cardan shaft 1 and rotating disk 7 K is fixed constant, the present invention it needs to be determined that turn of cardan shaft 1 and rotating disk 7
The ratio between speed K, its method is：If it is V that the lower part helical impeller 12 of cardan shaft 1, which rotates the delivering powder volume often enclosed,2, the annular groove of rotating disk 7
It is V to rotate the delivering powder volume often enclosed1；Then rotating speed (the n of cardan shaft 12) and the rotating speed (n of rotating disk 71) the ratio between K be：η is the compacting rate of powder, and its span is 1.1~1.3.
The present invention is promoted using helical runner 12 and rotating disk 7 aspirates the compound motion automatic powder feeding system being combined, and is solved micro-
The blockage problem easily occurred when fine powder is given, powder feeding process stabilization, powder sending quantity is uniform and continuously adjustabe.
The job step of apparatus of the present invention is as described below：
1. opening powder adding cap 51, powder is added into powder hopper 5；
2. cover powder adding cap 51, it is ensured that the air-tightness of upper and lower cylinder；
3. the feed amount for choosing the powder feeder unit interval is W1(g/min), if in the annular groove of rotating disk 7 powder loose specific weight
For ρ ', then the rotating speed of rotating disk 7 isThe rotating speed of cardan shaft 1η span is 1.1~1.3；
4. connecting air inlet pipe, holding gas flow is L1Liter/min, L1Span be 0.5~15 liter/min；Closed
Upper and lower cylinder in, powder feeding gas enters lower shell under rotating disk 7, from going out at the support base of flour extraction pipe 4 after a segment distance
Tube cell 4 is excluded；
5. opening powder feeder, cardan shaft 1 and rotating disk 7 synchronize compound motion, wherein cardan shaft 1 according to the rotating speed of setting
The puddler 11 of bottom uniformly stirs powder, and the helical runner 12 of the bottom of cardan shaft 1 is inverted, and powder is pushed into falling for powder hopper 5
In tube cell 53, and form a certain amount of powder aggregation；The powder being filled with the powder sinking tube cohesion of powder hopper 5 is pushed to the annular of rotating disk 7
Groove is interior and is gradually filled with annular groove；
6. powder in the annular groove of rotating disk 7 is suctioned out by flour extraction pipe 4 turning at flour extraction pipe 4, and completes powder feeding process.
Example：
If for example, helical runner 12 rotates the delivering powder volume V often enclosed2=10 π mm3, the annular groove 73 of rotating disk 7 rotates often
The delivering powder volume V of circle1=924 π mm3, η=1.1, then the ratio between rotating speed of cardan shaft 1 and rotating disk 7 K=n2/n1For 101.6.If
The rotating speed n of rotating disk1For 0.7 turn/min, corresponding propulsion rotating speed n2For 71 turns/min；If the loose specific weight of powder is 1.5g/
cm3, then the feed amount W of powder feeder unit interval2=3g/min；
Puddler 11 on cardan shaft 1 is used to break up powder, it is to avoid powder forms arch structure, cardan shaft bottom in powder hopper
Helical runner 12 according to setting speed invert.
During powder feeding, powder is quantitatively pushed in the powder sinking tube 53 of powder hopper 5 by helical runner 12, the powder falling of powder hopper 5
Length in reserve is h space in pipe 53, and the length is h headspace, and its effect is by the pulsation powder feeding of helical runner 12
Mode is changed into the automatic powder feeding system of continuous uniform, and meets following condition：H >=0.5dtg α, wherein, d is interior for powder sinking tube 53
Through α is the angle of repose of powder.The powder of usual poor fluidity can be assembled in headspace, just can after headspace is filled up
Continue downwards to transmit powder；If the angle of repose of powder is 60 °, if the interior of powder sinking tube 53 through d is 10mm, length is reserved in powder sinking tube
H >=8.6 are spent, the present embodiment h actual span is 10~15mm.
Alloy powder is pushed into the powder sinking tube 53 under powder hopper 5 by puddler 11 and helical runner 12 on cardan shaft 1, by
After aggregation in powder sinking tube 53 is stopped, by the effect of sliding block 6, it is uniformly distributed in the annular groove 73 of rotating disk 7.In annular groove 73
Alloy powder rotated with rotating disk 7, and from the powder falling end motion of sliding block 6 to powder end is inhaled, because the air pressure in lower barrel 56 is higher than
External atmosphere pressure, again with the presence of gear powder agglomates 62A, 62B, alloy powder will pass through flour extraction pipe support base in the presence of draught head
41, exported from flour extraction pipe 4, complete powder feeding process.
The present invention uses the compound motion that the ratio between rotating speed K is promoted for the helical runner of constant and rotating disc type suction is combined to send
Powder mode, the problem of powder for solving poor fluidity is difficult to uniformly give, device is giving tiny alloy steel powder, aluminium conjunction
Powder feeding process stabilization during the powder of poor fluidity such as bronze end, ceramic powders, precision is high, feed amount is uniform and continuously adjustabe.
Described above is presently preferred embodiments of the present invention, but the present invention should not be limited to the embodiment and accompanying drawing institute
Disclosure.So every do not depart from the lower equivalent or modification completed of spirit disclosed in this invention, guarantor of the present invention is both fallen within
The scope of shield.
Claims (10)
1. a kind of compound motion powder feeder, it is characterised in that：The powder feeder includes cardan shaft (1), cylinder, powder hopper (5), sliding block
And rotating disk (7) (6)；
The cylinder includes the upper and lower part of cylinder two；Powder hopper (5) is located in lower shell, and one end of the cardan shaft (1) is through upper
Cylinder is extend into lower shell, and puddler (11) is arranged at cardan shaft (1) bottom, and its bottom is provided with helical runner (12), puddler
(11) it is located at helical runner (12) in powder hopper (5)；The two ends of communicating pipe (3) are located in upper and lower cylinder respectively, for making,
The stable gas pressure of lower shell is consistent；
Flour extraction pipe (4), the powder inlet of flour extraction pipe (4) and powder sinking tube (53) the difference position of powder hopper (5) are installed on the lower shell
Top in sliding block (6) two ends；The two ends of sliding block (6) are respectively powder falling end and inhale powder end, and sliding block (6) is arranged on rotating disk (7),
The rotation of sliding block (6) and the central shaft that the centre of location is rotating disk (7)；Powder groove, rotating disk (7) and final drive shaft are provided with rotating disk (7)
(15) connect, can be rotated under final drive shaft (15) drive；
During work, the cylinder keeps air-tightness, and the powder sent into powder hopper (5) is stirred bar (11) and broken up, it is to avoid powder exists
Arch structure is formed in powder hopper (5), the helical runner (12) of cardan shaft bottom pushes powder according to the speed reversion of setting, and passes through
Powder sinking tube (53) enters in the powder groove of rotating disk (7) and is gradually filled with powder groove, and the sliding block (6) carries out whole to the powder in powder groove
Flat, rotating disk (7) is rotated with final drive shaft (15), the powder in powder groove is gone out powder when turning at the powder inlet of flour extraction pipe (4)
Manage (4) to suction out, the ratio between rotating speed by controlling cardan shaft (1) and rotating disk (7) K makes powder feed amount keep uniform, completes powder feeding
Process.
2. compound motion powder feeder according to claim 1, it is characterised in that：The cylinder it is specific by upper cover (51),
Upper barrel (52), inter panel (55), lower barrel (56) and bottom plate (57) are constituted, upper cover (51), upper barrel (52) and centre
Cover plate (55) connects and composes the upper shell, and inter panel (55), lower barrel (56) and bottom plate (57) connect and compose the lower cylinder
Body.
3. compound motion powder feeder according to claim 1, it is characterised in that：The rotating disk (7) is the circle of central aperture
Disk, one end of final drive shaft (15) is passed through by the hole, and one end of the axle is provided with gland (71)；The powder groove on rotating disk (7)
For annular groove (73), its bottom is provided with spring (72)；Rotating disk (7) is positioned by gland (71) and spring (72), utilizes spring
Elastic force combine sliding block (6) and rotating disk (7).
4. compound motion powder feeder according to claim 1, it is characterised in that：Reserved in the powder sinking tube (53) of powder hopper (5)
Length is h space, and the length is h headspace, meets following condition：H >=0.5dtg α, wherein, d is powder sinking tube
(53) interior warp, α is the angle of repose of powder.
5. compound motion powder feeder according to claim 2, it is characterised in that：Flour extraction pipe (4) is worn from inter panel (55)
Go out, flour extraction pipe support base (41) is arranged on inter panel (55), and bottom plate (57) is connected with housing (8), be provided with housing (8)
Transmission mechanism.
6. compound motion powder feeder according to claim 1, it is characterised in that：The sliding block (6) is integral planar formula knot
Structure, its powder falling end is provided with back taper powder falling through hole (61A), inhales powder end and is provided with back taper suction powder through hole (62B), sliding block (6) two ends
Bottom be respectively equipped with gear powder agglomates, the bottom of the gear powder agglomates is extend into the powder groove of rotating disk (7).
7. compound motion powder feeder according to claim 6, it is characterised in that：It is described gear powder agglomates by rubber, sponge or
Other elastomeric soft materials are made；The sliding block (6) is the overall structure of the smooth bowknot shape in upper surface.
8. compound motion powder feeder according to claim 1, it is characterised in that：Upper barrel (52) and lower barrel (56) are used
Transparent material is made.
9. according to any described compound motion powder feeder in claim 1 to 8, it is characterised in that：The cardan shaft (1) is with turning
The ratio between the rotating speed of disk (7) K is fixed constant.
10. according to any described compound motion powder feeder in claim 8, it is characterised in that：The ratio between rotating speed K determination method
For：If it is V that cardan shaft (1) lower part helical impeller (12), which rotates the delivering powder volume often enclosed,2, the powder groove of rotating disk (7), which is rotated, often to be enclosed
Delivering powder volume be V1；The then rotating speed n of cardan shaft (1)2With the rotating speed n of rotating disk (7)1The ratio between K be：Its
Middle η is the compacting rate of powder, and its span is 1.1~1.3.
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| CN201510821048.3A CN105297008B (en) | 2015-11-22 | 2015-11-22 | A kind of compound motion powder feeder |
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| CN201510821048.3A CN105297008B (en) | 2015-11-22 | 2015-11-22 | A kind of compound motion powder feeder |
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| CN105297008B true CN105297008B (en) | 2017-08-25 |
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Effective date of registration: 20180314 Address after: 436070 Ezhou city Gedian Development Zone No. 1 Industrial Zone entrepreneurship service center in Hubei Patentee after: Wuhan Hanhai Intelligent Laser Engineering Co. Ltd. Address before: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 1037 Patentee before: Huazhong University of Science and Technology |