CN106623920A - Precise compact type 3D printer powder supply mechanism and transmission method - Google Patents
Precise compact type 3D printer powder supply mechanism and transmission method Download PDFInfo
- Publication number
- CN106623920A CN106623920A CN201610944855.9A CN201610944855A CN106623920A CN 106623920 A CN106623920 A CN 106623920A CN 201610944855 A CN201610944855 A CN 201610944855A CN 106623920 A CN106623920 A CN 106623920A
- Authority
- CN
- China
- Prior art keywords
- splined shaft
- cylinder body
- supplying mechanism
- screw rod
- powder supplying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/10—Formation of a green body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
- B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/30—Platforms or substrates
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention provides a precise compact type 3D printer powder supply mechanism and a transmission method. The precise compact type 3D printer powder supply mechanism comprises a lower cylinder body, a spline assembly, a lead screw and a motor, wherein a supporting part is arranged above the lower cylinder body, the spline assembly comprises a spline shaft and a spline sleeve, the spline sleeve is fixed to the bottom surface of the supporting part, the spline shaft can be inserted into the spline sleeve in an axial motion mode, and one end of the spline shaft extends out of the lower cylinder body. The lead screw comprises a screw rod and a lead screw nut, wherein the lead screw nut is arranged in the lower cylinder body and is fixed to the bottom end of the spline shaft, the screw rod is in threaded connection with the lead screw nut and extends into the spline shaft, and the screw rod is connected with the servo motor. The powder supply mechanism has high linear motion precision through connection and transmission between the lead screw and the spline assembly and meets the transmission precision demand of a 3D printer. In addition, the screw rod extends into the spline assembly, and the powder supply mechanism has the advantage that an arrangement space of a transmission structure is small.
Description
Technical field
The present invention relates to printer powder supplying mechanism technical field, more particularly to a kind of accurate compact 3D printer supplies powder
Mechanism and drive method.
Background technology
3D printer, also known as three-dimensional printer, is a kind of machine of a kind of accumulation manufacturing technology, i.e. RP technique.It
With special wax material, powdery metal or plastics etc. can jointing material, manufacture three-dimensional by printing jointing material from level to level
Object.3D printer drives the kind of drive for coordinating guide rail slide block in print procedure, generally using screw mandrel.This class formation is needed
A series of guide rail and slide block mechanism are installed, it is adaptable to large-scale equipment, possess enough spaces to arrange drive mechanism.
Therefore, the drive mechanism that some sizes are little, insufficient space equipment is difficult with screw mandrel, guide rail is also caused.
Chinese Patent Application No. is 201620147025.9 to disclose a kind of motion of 3D printer, including mounting seat
And X-axis mobile device, Y-axis mobile device, the Z axis mobile device being arranged on.Include fixed seat, screw mandrel and described
The cunning that the axis of guide that the transmission nut that screw mandrel is engaged be arranged in parallel with the screw mandrel, line slideway are engaged with line slideway
Block and bracing frame.It can be seen that although the powder supplying mechanism in this document is able to ensure that the linear motion essence of printhead and print platform
Degree, but it arranges line slideway, slide block etc. and needs larger space so that application apparatus be subject to many limitations.
The content of the invention
It is an object of the invention to overcome the shortcoming of prior art, there is provided a kind of accurate compact 3D printer supplies powder machine
Structure.
The subject matter of solution is that existing printer powder supplying mechanism causes powder supplying mechanism to ensure precision of rectilinear motion
Complex structure, bulky problem.
To solve above-mentioned technical problem, following technical measures are present invention employs:
A kind of accurate compact 3D printer powder supplying mechanism, including lower cylinder body, splined member, screw mandrel and motor, it is described
Lower cylinder body top is provided with support member, and the bottom surface of the support member is plane;The splined member includes splined shaft and spline housing, institute
The bottom surface that spline housing is fixed on the support member is stated, the insertion spline housing that the splined shaft may be axially movable, the flower
Stretch out the lower cylinder body in one end of key axle;The screw mandrel includes screw rod and feed screw nut, and the feed screw nut is located at the lower cylinder
In vivo, the feed screw nut is fixed on the bottom of the splined shaft, and the screw rod is threadedly coupled with the feed screw nut, the spiral shell
Bar is stretched in the splined shaft, and the screw rod is connected with the servomotor.
The present invention can also be further perfect by following technical measures:
Used as further improvement, the plane perpendicular of the relatively described upper cylinder body of the spline housing is arranged.
As further improvement, through hole is provided with the splined shaft, the screw rod is stretched in the through hole, the screw rod with
The splined shaft is coaxial.
Used as further improvement, the feed screw nut includes fixed part and same axle portion, the fixed part and the splined shaft
It is fixedly connected, the same axle portion is stretched in the through hole, the same axle portion is provided with screwed hole and is connected with the screw rod.
Used as further improvement, the splined member adopts ball spline component, above the splined shaft work is provided with
Platform, the workbench is fixed on the splined shaft by fixture, and on the fixture y-type seal ring is arranged with.
Used as further improvement, the spline housing includes connecting portion and guide part, the connecting portion and the support member
Bottom surface is fixedly connected, and the guide part stretches out the lower cylinder body.
Used as further improvement, also including shaft coupling, the rotating shaft of the motor is connected by shaft coupling with the screw rod.
Used as further improvement, the lower cylinder body bottom offers connecting hole, plane bearing, institute is provided with the connecting hole
The rotating shaft for stating motor is connected through the plane bearing with the shaft coupling.
Used as further improvement, also including electromagnetic switch, for controlling the scope of the splined shaft movement, the electromagnetism is opened
Pass includes metalwork and induction pieces, and the bottom surface of the feed screw nut is provided with metalwork, the bottom in the lower cylinder body and top point
Induction pieces are not provided with it.
In addition, additionally provide a kind of drive method, using above-mentioned powder supplying mechanism, including controller, the controller with
Powder supplying mechanism connects, and comprises the following steps:
S1, workbench is fixedly connected with the top of the splined shaft;
S2, starts motor and controller, and the motor drives the screw mandrel to rotate;
S3, along the axial movement of screw mandrel, the splined shaft moves together the feed screw nut with feed screw nut;
S4, the workbench is moved up and down in the drive lower edge accommodating cavity of the splined shaft.
Compared with prior art, the present invention has advantages below:
1st, because splined member has the characteristic of high-precision longitudinal axis slip, while screw mandrel also has high-precision transmission special
Property.Therefore, by the connection of screw mandrel and splined member, and transmission therebetween.So that powder supplying mechanism has higher straight line
Kinematic accuracy, meets the transmission accuracy demand of 3D printer.Additionally, screw rod is stretched in splined member, this annexation is big
The arrangement space of drive mechanism is reduced greatly so that screw mandrel can be applied to some spaces with the powder supplying mechanism of splined member composition
In the little equipment of little, size.
2nd, the plane perpendicular of the relatively described support member of the spline housing is arranged so that the spline being coaxially disposed with spline housing
Axle, also the plane perpendicular setting of relative support.Thus it is guaranteed that the vertical precision of splined shaft so that splined shaft is transported vertically
Dynamic vertical range reaches design requirement.
Description of the drawings
Accompanying drawing 1 is the schematic perspective view of accurate compact 3D printer powder supplying mechanism of the invention;
Accompanying drawing 2 is the main sectional view of compact 3D printer powder supplying mechanism accurate shown in accompanying drawing 1;
Accompanying drawing 3 is that splined member shows with the solid of screw mandrel in compact 3D printer powder supplying mechanism accurate shown in accompanying drawing 1
It is intended to;
Accompanying drawing 4 is the schematic perspective view of feed screw nut in compact 3D printer powder supplying mechanism accurate shown in accompanying drawing 2.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail with specific embodiment.
The problem of the main solution of the present invention is to change the drive mechanism that existing screw mandrel coordinates with guide rail, simplifies transmission
Structure and diminution powder supplying mechanism volume.Certainly on the basis of solve problem, the precision of rectilinear motion for ensureing powder supplying mechanism is also needed,
During 3D printer equipment can be applied to.Wherein, the characteristics of being molded according to metal 3D printer, it is desirable to the distance of each feeding
For 0.02mm, repetitive error is in below 0.005mm, therefore the driving member being connected with workbench must have higher linear motion
Range accuracy, and with controllability is high, stable movement.
Fig. 1 and Fig. 2 is refer to, a kind of accurate compact 3D printer powder supplying mechanism includes lower cylinder body 10, splined member
50 and screw mandrel 40, accommodating cavity 13 is provided with the lower cylinder body 10, the splined member 50 is located at the accommodating cavity 13 with screw mandrel 40
It is interior.The top of the lower cylinder body 10 is provided with support member 30, and the bottom surface 31 of the support member is plane, is follow-up splined member 50
Setting is prepared.Wherein, the support member 30 is in hollow housing structure, and the component for facilitating equipment is arranged.
Fig. 2 is refer to, the splined member 50 includes splined shaft 52 and spline housing 51, and the spline housing 51 is fixed on described
The bottom surface 31 of support member.The insertion spline housing 51 that the splined shaft 52 may be axially movable, one end of the splined shaft 52
Stretch out the lower cylinder body 10.By cleverly using splined member 50, the effect driving member of splined shaft 52, and matched spline
Set 51 plays guide effect, eliminates big volume, baroque guide rail, the structure of slide block.
Fig. 2 is refer to, the screw mandrel 40 includes screw rod 42 and feed screw nut 41, and the feed screw nut 41 is located at the lower cylinder
In body 10, the feed screw nut 41 is fixed on the bottom of the splined shaft 52, the screw rod 42 and the screw thread of the feed screw nut 41
Connection, the screw rod 42 is stretched in the splined shaft 52, and the screw rod 42 is connected with the servomotor 20.By feed screw nut 41
It is fixedly connected with splined shaft 52 so that screw mandrel 40 can drive the linear motion of splined shaft 52, the range accuracy with linear motion
The high and good advantage of transmission stability.
Because splined member 50 has the characteristic of high-precision longitudinal axis slip, while screw mandrel 40 also has high-precision transmission
Characteristic.Therefore, by the connection of screw mandrel 40 and splined member 50, and transmission therebetween.So that powder supplying mechanism have compared with
High precision of rectilinear motion, meets the transmission accuracy demand of 3D printer.Additionally, screw rod 42 is stretched in splined member 50, it is this
Annexation greatly reduces the arrangement space of drive mechanism so that screw mandrel 40 can with the powder supplying mechanism of the composition of splined member 50
Be applied to that some spaces are little, in the equipment that size is little.
Refer to Fig. 2, it is preferred that the plane perpendicular of the relatively described upper cylinder body of the spline housing 51 is arranged.So that and spline
51 splined shafts 52 being coaxially disposed are covered, also the bottom surface 31 of relative support is vertically arranged.Thus it is guaranteed that splined shaft 52 is vertical
Precision so that the vertical range of splined shaft 52 reaches design requirement.
Refer in Fig. 2, the splined shaft 52 and be provided with through hole 53, the screw rod 42 is stretched in the through hole 53, the spiral shell
Bar 42 is coaxial with the splined shaft 52 so that the transmission of the screw mandrel 40 does not interfere with the vertical precision of the splined shaft 52, from
And ensure the range accuracy of the linear motion of splined shaft 52.
Refer to Fig. 2 and Fig. 4, the feed screw nut 41 includes fixed part 411 and with axle portion 412, the fixed part 411 with
The splined shaft 52 is fixedly connected, and the same axle portion 412 is stretched in the through hole 53, and the same axle portion 412 is provided with screwed hole 413
It is connected with the screw rod 42.The same axle portion 412 is stretched in the through hole 53, the relatively described flower of the screw rod 42 is prevented effectively from
The deflection of key axle 52 so that the screw rod 42 is coaxial with the splined shaft 52 in the presence of same axle portion 412.
Fig. 3 is refer to, the splined member 50 adopts ball spline, slided with rotary motion and along y direction, energy
It is enough to be connected to form powder supplying mechanism with the screw mandrel 40, there is structure simplification, stable drive, high precision.The spline housing
51 include connecting portion 511 and guide part 512, and the connecting portion 511 is fixedly connected with the bottom surface 31 of the support member, the guiding
Stretch out the lower cylinder body 10 in portion 512.
Fig. 3 is refer to, the top of the splined shaft 52 is provided with workbench 70, and the workbench 70 is fixed by fixture 32
On the splined shaft 52.Y-type seal ring 33 is arranged with the fixture 32, prevents metal dust etc. from falling into powder supplying mechanism
It is interior.
Fig. 2 and Fig. 3 is refer to, also including shaft coupling 80, the rotating shaft of the motor 20 is by shaft coupling 80 and the screw rod
42 connections.Motor 20 is enabled smoothly to drive screw rod 42 to rotate by shaft coupling 80.The bottom of the lower cylinder body 10 offers
Plane bearing 12 is provided with connecting hole 11, the connecting hole 11, the rotating shaft of the motor 20 is through the plane bearing 12 and institute
State shaft coupling 80 to connect.The plane bearing 12 is capable of the rotating shaft of motor 20 described in effective protection, extends the use longevity of motor 20
Life.
Fig. 3 is refer to, also including electromagnetic switch 60, for controlling the scope of the movement of the splined shaft 52, the electromagnetism is opened
Closing 60 includes metalwork 61 and induction pieces 62, and the bottom surface of the feed screw nut 41 is provided with metalwork 61, in the lower cylinder body 10
Bottom is respectively equipped with induction pieces 62 with top.It is set with the upper limit and lower limit in the moving process of the splined shaft 52 respectively, it is described
Induction pieces 62 are respectively used to control the mobile upper limit of the splined shaft 52 and mobile lower limit.
Additionally provide a kind of drive method, using above-mentioned powder supplying mechanism, including controller, the controller with supply powder machine
Structure connects, and comprises the following steps:
S1, workbench 70 is fixedly connected with the top of the splined shaft 52;
S2, starts motor 20 and controller, and the motor 20 drives the screw mandrel 40 to rotate;
S3, along the axial movement of screw mandrel 40, the splined shaft 52 moves together the feed screw nut 41 with feed screw nut 41;
S4, the workbench 70 is moved up and down in the drive lower edge accommodating cavity 13 of the splined shaft 52.
Wherein, in step 4, when the splined shaft 52 is moved to the upper limit or lower limit, the electromagnetic switch 60 will work,
The induction pieces 62 are sensed after metalwork 61, connect controller so that controller controls the motor 20 and stops operating.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (10)
1. a kind of accurate compact 3D printer powder supplying mechanism, it is characterised in that:Including lower cylinder body, splined member, screw mandrel and
Motor, the lower cylinder body top is provided with support member, and the bottom surface of the support member is plane;The splined member include splined shaft and
Spline housing, the spline housing is fixed on the bottom surface of the support member, the insertion that the splined shaft the may be axially movable spline
Set, the lower cylinder body is stretched out in one end of the splined shaft;The screw mandrel includes screw rod and feed screw nut, and the feed screw nut is located at
In the lower cylinder body, the feed screw nut is fixed on the bottom of the splined shaft, and the screw rod connects with feed screw nut's screw thread
Connect, the screw rod is stretched in the splined shaft, the screw rod is connected with the servomotor.
2. accurate compact 3D printer powder supplying mechanism according to claim 1, it is characterised in that the spline housing phase
The plane perpendicular of the upper cylinder body is arranged.
3. accurate compact 3D printer powder supplying mechanism according to claim 1, it is characterised in that in the splined shaft
Through hole is provided with, the screw rod is stretched in the through hole, the screw rod is coaxial with the splined shaft.
4. accurate compact 3D printer powder supplying mechanism according to claim 3, it is characterised in that the feed screw nut
Including fixed part and same axle portion, the fixed part is fixedly connected with the splined shaft, and the same axle portion is stretched in the through hole, institute
State same axle portion and be provided with screwed hole and be connected with the screw rod.
5. accurate compact 3D printer powder supplying mechanism according to claim 1, it is characterised in that the splined member
Using ball spline component, workbench is provided with above the splined shaft, the workbench is fixed on the flower by fixture
On key axle, on the fixture y-type seal ring is arranged with.
6. accurate compact 3D printer powder supplying mechanism according to claim 1, it is characterised in that the spline housing bag
Connecting portion and guide part are included, the connecting portion is fixedly connected with the bottom surface of the support member, the guide part stretches out the lower cylinder
Body.
7. accurate compact 3D printer powder supplying mechanism according to claim 1, it is characterised in that also including shaft coupling
Device, the rotating shaft of the motor is connected by shaft coupling with the screw rod.
8. accurate compact 3D printer powder supplying mechanism according to claim 7, it is characterised in that the lower cylinder body bottom
Portion offers connecting hole, is provided with plane bearing in the connecting hole, the rotating shaft of the motor through the plane bearing with it is described
Shaft coupling connects.
9. accurate compact 3D printer powder supplying mechanism according to claim 1, it is characterised in that also open including electromagnetism
Close, for controlling the scope of the splined shaft movement, the electromagnetic switch includes metalwork and induction pieces, the feed screw nut's
Bottom surface is provided with metalwork, and the bottom in the lower cylinder body is respectively equipped with induction pieces with top.
10. a kind of drive method, it is characterised in that usage right requires the powder supplying mechanism in 1 to 9 any one, including control
Device, the controller is connected with powder supplying mechanism, comprises the following steps:
S1, workbench is fixedly connected with the top of the splined shaft;
S2, starts motor and controller, and the motor drives the screw mandrel to rotate;
S3, along the axial movement of screw mandrel, the splined shaft moves together the feed screw nut with feed screw nut;
S4, the workbench is moved up and down in the drive lower edge accommodating cavity of the splined shaft.
Priority Applications (1)
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CN201610944855.9A CN106623920B (en) | 2016-10-26 | 2016-10-26 | A kind of the compact 3D printer powder supplying mechanism and drive method of precision |
Applications Claiming Priority (1)
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CN201610944855.9A CN106623920B (en) | 2016-10-26 | 2016-10-26 | A kind of the compact 3D printer powder supplying mechanism and drive method of precision |
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CN106623920A true CN106623920A (en) | 2017-05-10 |
CN106623920B CN106623920B (en) | 2019-08-13 |
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