CN109304860B - 3D printer based on cylindrical coordinate system - Google Patents
3D printer based on cylindrical coordinate system Download PDFInfo
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- CN109304860B CN109304860B CN201811057208.1A CN201811057208A CN109304860B CN 109304860 B CN109304860 B CN 109304860B CN 201811057208 A CN201811057208 A CN 201811057208A CN 109304860 B CN109304860 B CN 109304860B
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- 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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
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- 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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
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- 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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/227—Driving means
- B29C64/232—Driving means for motion along the axis orthogonal to the plane of a layer
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- 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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/227—Driving means
- B29C64/241—Driving means for rotary motion
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a 3D printer based on a cylindrical coordinate system, which comprises an annular module, a spray head module, a lifting module, a main body frame and a printer outer cover, wherein the annular module is arranged on the outer side of the main body frame; the annular module is in sliding fit with the support column of the main body frame through a linear bearing, the annular module is fixedly connected with the lifting module through a lifting frame, and the lifting module is fixedly connected with the main body frame through a lifting driving motor fixed on the top cover; under a cylindrical coordinate system, the spray head module needs to perform circumferential rotation motion, radial linear motion and axial lifting motion, wherein the circumferential rotation motion is completed by the driving of the rotary driving slide block of the annular module, the radial linear motion is completed by the matching driving of the radial driving module and the radial driven module of the annular module, and the axial lifting motion is completed by the driving of the lifting module. The 3D printer has the characteristics of compact structure, reasonable design, small volume, relatively large printing range and high stability and printing precision.
Description
Technical Field
The invention relates to the field of 3D printing, in particular to a 3D printer based on a cylindrical coordinate system.
Background
The 3D printing technology is an emerging technology in recent years, is mainly applied to the field of industrial design at present, a model is generally established by computer aided design software, and the model is presented by an additive printing technology, so that the shape processing which cannot be formed by the traditional machining technology can be realized.
Present 3D printer is mainly based on the arm-type printer and the parallel arm structure printer of the XYZ three-direction motion of cartesian coordinate system, and such mechanism needs three sets of drives and slider, and shared volume is great, and the printing range is less relatively, and can produce great additional dynamic load at the in-process of reciprocal printing and lead to part fatigue destruction, mechanism overall stability to descend, and then the influence prints the precision.
Disclosure of Invention
The invention aims to provide a 3D printer based on a cylindrical coordinate system, which is more compact in mechanism and more stable in motion mode.
In order to realize the purpose, the following technical scheme is adopted: the printer comprises an annular module, a spray head module, a lifting module, a main body frame and an outer cover; the main body frame consists of a top cover, a support pillar, a baffle sleeve and a base; the support column is in interference fit with the column cap of the top cover and the column hole of the base; the retaining sleeve penetrates through the supporting column and is in transition fit with the supporting column, the retaining sleeve is in contact with the upper surface of the base, and the retaining sleeve can prevent the supporting rotary driving sliding block from being rotated after the driving rope is accidentally broken, so that the whole annular module is supported, and the spray head module is prevented from colliding with the base; the annular module is fixedly connected with the lifting module through a lifting frame; the annular module is in sliding fit with the support column of the main body frame through a linear bearing; the spray head module is fixedly connected with a radial transmission synchronous belt of the annular module through a spray head elevator sliding rod; the lower end of the lifting module is fixedly connected with the annular platform frame through a lifting frame, and the upper end of the lifting module is fixedly connected with the top cover of the main body frame through a lifting driving motor.
Further, the annular module comprises a rotary driving slide block and an annular platform; the rotary driving sliding block and the annular platform are meshed and connected with the rotary driving wheel through the annular synchronous belt, and the rotary driving sliding block circumferentially positions the annular platform and rotationally drives the annular platform through meshing fit, so that the inertial load can be reduced to a certain extent by driving in such a way, and the reciprocating printing stability and the printing precision of the printer are improved; the annular platform is outer along up end and rotation driving slider contact cooperation, and through this kind of contact cooperation, the annular platform provides ascending holding power to rotation driving slider, can make the printer structure compacter with the integrated annular module of the rotation driving and the radial linear drive of printer on, print the scope bigger relatively.
Further, the rotary driving slider comprises a slider frame, a linear bearing, a rotary driving wheel and a rotary driving motor; linear bearing and the dead eye interference fit of slider frame both sides, linear bearing and main body frame's support column sliding fit can make whole annular module less resistance when going up and down, improve motion efficiency and lift position precision.
Furthermore, bearing holes matched with the linear bearings are formed in the left end and the right end of the sliding block frame, holes in the top end of the sliding block frame are used for penetrating through a motor shaft of the rotary driving motor, an arc notch is formed in the upper end of the sliding block frame to prevent the annular platform from being interfered to rotate, and a corresponding notch is not formed in the lower end of the sliding block frame to support the annular platform.
Further, the annular platform comprises an annular platform frame, an annular synchronous belt, a radial driven module and a radial driving module; the annular synchronous belt is tightly attached and fixedly connected to the outer side of the annular platform frame; the radial driven module and the radial driving module are respectively fixed on the annular platform frame, and the radial driven module and the radial driving module are connected into a whole by being meshed with the same synchronous belt.
Furthermore, the annular platform frame main part is an annular metal frame and is equipped with the crossbeam in the diameter position, and annular metal frame surface equipartition screw hole is used for being connected with annular hold-in range, and crossbeam one side has an open slot to be radial spout, and radial spout length surpasss annular platform frame radius length, leaves the motor frame at radial spout opposite side, fixes radial driving motor on the motor frame.
Furthermore, the spray head module comprises a spray head elevator sliding rod, a spray head discharging driving motor, a spray head cavity cover, a spray head cavity and a feeding screw rod; the top end of the spray head elevator sliding block is fixedly connected with the radial transmission synchronous belt; the rod shoulders of the spray head elevator sliding block are arranged at two ends of the radial sliding chute of the annular platform frame, and the weight of the spray head module is borne by the annular platform frame in the structural mode, so that the phenomenon that the radial transmission synchronous belt sags or is broken due to the overweight of the spray head module is avoided; the lower end of a rod of the spray head elevator sliding block penetrates through a radial sliding groove of the annular platform frame to be in threaded connection with the spray head cavity cover; the spray head cavity cover is in threaded connection with the spray head cavity; the nozzle discharging driving motor is fixedly connected with the nozzle cavity cover, a motor output shaft of the nozzle discharging motor is in key connection with the nozzle feeding screw rod, and the nozzle feeding screw rod has a heating function and can melt printing consumables and push out the printing consumables in a rotating mode through the helical blades.
Furthermore, the lifting module comprises a lifting frame, a plane bearing support, a plane bearing, a transmission rope, a turntable and a lifting driving motor; the lower end of the lifting frame is connected with the annular platform frame through a bolt; one end of the transmission rope penetrates through a center hole and a plane shaft at the top end of the lifting frame and then is fixedly connected with the plane bearing support, the lower surface of the plane bearing is fixedly connected with the plane bearing support, and the upper surface of the plane bearing is fixedly connected with the top end of the lifting frame; the other end of the transmission rope is fixedly connected with the rotary table, and the transmission rope can be coiled through the rotation of the rotary table, so that the height of the annular module is increased; the turntable is connected with a lifting driving motor key.
Further, the outer cover comprises a top cover and a side cover; the upper end of the top cover is an arc curved surface, the lower end of the top cover is a cylindrical surface at one end tangent to the curved surface, and a power line interface is reserved on one side of the cylindrical surface; the side cover is a curved surface formed by combining a plurality of sections of curves and rotating, the upper end of the side cover is in smooth transition with the top cover, and the lower end of the side cover is matched with the base.
Compared with the prior art, the invention has the following advantages: the volume is small, the printing range is relatively large, the printing is carried out in a cylindrical coordinate system mode, and the stability and the printing precision are high.
Drawings
FIG. 1 is a three-dimensional schematic of the present invention;
FIG. 2 is a schematic view of the main structure of the present invention;
FIG. 3 is a schematic view of a ring module according to the present invention;
FIG. 4 is a schematic view of a rotary drive slider according to the present invention;
FIG. 5 is a schematic view of a slider frame according to the present invention;
FIG. 6 is a schematic view of the annular platform of the present invention;
FIG. 7 is a schematic view of the annular platform frame construction of the present invention;
FIG. 8 is a schematic view of a radial slave module according to the present invention;
FIG. 9 is a schematic view of a radial active module according to the present invention;
FIG. 10 is a schematic view of the showerhead module of the present invention mated with an annular platform;
FIG. 11 is a schematic structural view of a showerhead module according to the present invention;
FIG. 12 is a schematic view of the lift module of the present invention in cooperation with an annular platform;
FIG. 13 is a schematic view of the body frame and lift module of the present invention in combination;
FIG. 14 is a top plan view of the top cover of the present invention;
FIG. 15 is a side cross-sectional view of the overcap of the present invention;
FIG. 16 is a top view of the base of the present invention;
FIG. 17 is a side cross-sectional view of a base of the present invention;
FIG. 18 is a schematic view of a printer housing according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1, the main structure of the present invention includes an annular module 1, a nozzle module 2, a lifting module 3, a main frame 4 and a printer housing 5, wherein the annular module 1 can complete circumferential rotation driving and radial linear driving of the printer nozzle module 2, the lifting module 3 can complete lifting driving of the printer nozzle module 2, the nozzle module 2 can uniformly eject printing consumables to realize additive forming, the main frame 4 serves as a frame of the printer to support other components and stabilize the overall structure, and the printer housing 5 can protect a workpiece from being contaminated by external sundries during the additive forming process, and also avoid safety accidents.
Specifically, the structure and principle of the 3D printer based on the cylindrical coordinate system will be described below with reference to the accompanying drawings.
Fig. 2 shows the arrangement of the main components of the 3D printer based on the cylindrical coordinate system and the matching manner between the components, the main components include an annular module 1, a nozzle module 2, a lifting module 3 and a main body frame 4, the annular module 1 is in sliding fit with a support column 42 of the main body frame 4 through a linear bearing 112, the annular module 1 is fixedly connected with the lifting module 3 through a lifting bracket 31, and the lifting module 3 is fixedly connected with the main body frame through a lifting driving motor 36 fixed on a top cover 41.
Fig. 3 shows a specific structure of the ring module 1, the ring module 1 comprises a rotary driving slider 11 and a ring platform 12, the rotary driving slider 11 and the ring platform 12 are meshed with a rotary driving wheel 113 through an endless timing belt 122, by this engagement, the rotary drive slider 11 circumferentially positions and rotationally drives the annular table 12, the driving in this way can reduce the inertia load to a certain extent, improve the stability and printing precision of the reciprocating printing of the printer, the upper end surface of the outer edge of the annular platform 12 is contacted and matched with the rotary driving slide block 11, through the contact fit, the annular platform 12 provides upward supporting force for the rotary driving slide block 11, and the rotary driving and the radial linear driving of the printer are integrated on one annular module 1, so that the printer mechanism is more compact and has a larger relative printing range.
Fig. 4 shows a specific structure of the rotary drive slider 11, which includes: the sliding block lifting device comprises a sliding block frame 111, a linear bearing 112, a rotary driving wheel 113 and a rotary driving motor 114, wherein the linear bearing 112 is in interference fit with bearing holes on two sides of the sliding block frame 111, the linear bearing 112 is in sliding fit with a supporting column 42 of a main body frame 4, so that the whole annular module has smaller resistance when lifted, the movement efficiency and the lifting position precision are improved, the rotary driving motor 114 is fixedly connected to the central position of the upper end of the sliding block frame 111 through a screw, a motor shaft of the rotary driving motor 114 penetrates through a motor shaft hole reserved in the upper end of the sliding block frame 111 and is in key connection fit with the rotary driving wheel 113 which is positioned right below the motor shaft and between the upper end and the lower end of the sliding block frame 111, and the;
fig. 5 shows a specific shape of the slider frame 111, the holes at the left and right ends of the slider frame 111 are used for matching with the linear bearings 112, the hole at the top end is used for passing through the motor shaft, the upper end is provided with an arc notch to prevent interference with the annular platform 12 for rotation, and the lower end is not provided with a corresponding notch to support the annular platform 12;
fig. 6 shows a specific structure of the annular platform 12, and the annular platform 12 includes: the device comprises an annular platform frame 121, an annular synchronous belt 122, a radial driven module 123 and a radial driving module 124, wherein the annular synchronous belt 122 is fixedly connected to the outer side of the annular platform frame 121 through small bolts and strong glue, the radial driven module 123 and the radial driving module 124 are respectively fixed to the annular platform frame 121, and the radial driven module 123 and the radial driving module 124 are connected into a whole through being meshed with the same synchronous belt;
fig. 7 shows a specific shape of the annular platform frame 121, the main body is an annular metal frame, a cross beam 121 is arranged at a diameter position, threaded holes are uniformly distributed on the outer surface of the annular metal frame for connecting with the annular synchronous belt 122, one side of the cross beam is provided with an open slot which is a radial sliding chute 1211, the length of the radial sliding chute 1211 exceeds the length of the radius of the annular platform frame 121, and a motor frame 1212 for fixing a radial driving motor is arranged at the other side of the radial sliding chute 1211;
fig. 8 shows a specific structure of the radial slave module 123, and the radial slave module 123 includes: the radial driven wheel frame 1231 is fixedly connected with the annular platform frame through threaded connection, the radial driven wheel shaft 1232 penetrates through a shaft hole in the upper end of the radial driven wheel frame 1231 and is in clearance fit with the shaft hole, and the radial driven wheel 1233 is in interference fit with the radial driven wheel shaft 1232 and is in clearance fit with the radial driven wheel frame 1231;
fig. 9 shows a specific structure of the radial active module 124, and the radial active module 124 includes: the radial driving synchronous belt 1241, the radial driving wheel 1242, the radial driving motor 1243 and the radial driving motor set screw 1244, the radial driving motor 1243 is in transition fit with the motor frame 1212 of the annular platform frame 121 and is clamped by the radial driving motor set screw 1244, the radial driving wheel 1242 is in key connection fit with the radial driving motor 1243, and the radial driving synchronous belt 1241 is respectively engaged with and tensioned by the radial driving wheel 1242 and the radial driven wheel 1233;
fig. 10 and 11 show the matching manner of the spray head module 2 and the ring module 1 and the specific structure of the spray head module 2, wherein the spray head module 2 comprises: a spray head elevator sliding rod 21, a spray head discharging driving motor 22, a spray head cavity cover 23, a spray head cavity 24 and a feeding screw rod 25, wherein the top end of the spray head elevator sliding block 21 is connected with a radial transmission synchronous belt 1241 through a bolt, the rod shoulder of the spray head elevator sliding block 21 is arranged at the two ends of a radial sliding chute 1211 of the annular platform frame 121, the weight of the nozzle module 2 is borne by the annular platform frame 121 in the structural form, the phenomenon that the radial transmission synchronous belt 1241 sags or is broken due to the fact that the nozzle module is too heavy is avoided, the lower end of a rod of the nozzle elevator sliding block 21 penetrates through a radial sliding chute 1211 of the annular platform frame 121 to be in threaded connection with the nozzle cavity cover 22, the nozzle cavity cover 22 is in threaded connection with the nozzle cavity 24, the nozzle discharging driving motor 23 is connected with the nozzle cavity cover 22 through bolts, the motor output shaft is in key connection with the nozzle feeding screw rod 25, the nozzle feeding screw rod 25 has a heating function and can melt printing consumables and push the printing consumables out through rotation of spiral blades;
fig. 12 shows the main structure of the lifting module 3 and the way in which the lifting module 3 cooperates with the ring module 1, the lifting module 3 comprising: a lifting frame 31, a plane bearing support 32, a plane bearing 33, a transmission rope 34, a turntable 35 and a lifting driving motor 36, wherein the lower end of the lifting frame 31 is connected with the annular platform frame 121 through a bolt, one end of the transmission rope 34 passes through a central hole and a plane shaft 33 at the top end of the lifting frame 31 and then is fixedly connected with the plane bearing support 32, the lower surface of the plane bearing 33 is fixedly connected with the plane bearing support 32, the upper surface of the plane bearing 33 is fixedly connected with the top end of the lifting frame 31, the structure mode separates the circumferential movement of the annular module 1 and the lifting module 3 by using the plane bearing 33, avoids the increase or twist-off of the internal stress of the transmission rope 34 caused by the rotation of the annular module 1 driving the transmission rope 34 to be twisted, the other end of the transmission rope 34 is fixedly connected with the turntable 35, the transmission rope 34 can be coiled by the rotation of the turntable 35, the height of the annular module 1 is further improved, and the rotary disc 35 is in key connection with a lifting driving motor 36;
fig. 13 shows the main structure of the main body frame 4 and the manner in which the main body frame 4 is fitted to the lifting module 3, and the main body frame 4 includes: the device comprises a top cover 41, a support column 42, a blocking sleeve 43 and a base 44, wherein the support column 42 is in interference fit with a column cap of the top cover 41 and is in interference fit with a column hole of the base 44, the blocking sleeve 43 penetrates through the support column 42 and is in transition fit with the support column 42, the blocking sleeve 43 is in surface contact with the upper surface of the base 44, the blocking sleeve 43 can prevent the rotary driving slide block 11 from being supported after the driving rope 34 is accidentally broken, so that the whole annular module 1 is supported, the spray head module 2 is prevented from colliding with the base 44, a base of a lifting driving motor 35 of the lifting module 3 is fixedly connected with the top cover 41 of a main body frame 4 through a bolt, and the driving rope 34 penetrates through a hole reserved;
fig. 14 and 15 show the specific shape of the top cover 41, the main plane of the top cover 41 is used for placing electrical components and wiring, 4 caps 412 are uniformly distributed on the top cover 41, the cross section of each cap 412 is inverted "concave" and is used for matching with the support column 42, a plurality of preformed holes are distributed on the top cover 41 and are respectively used for penetrating the transmission rope 34 and the fixed lifting drive motor 36, a main line hole 411 is mainly used for penetrating the control line and the drive line of the ring module 1 and the spray head module 2, and a convex edge is arranged on the outer edge of the top cover 41 and is used for supporting the top cover 51 and matching with the side cover 52 in a transition way;
fig. 16 and 17 show the specific shape of the base 44, the central plane of the base 44 has a higher flatness and a lower roughness for serving as a support platform for printing and forming, 4 column holes 441 are uniformly distributed on the base 44, the column holes 441 are used for inserting and interference-fitting the support columns 42, an annular cutting groove is formed on the outer edge of the base 44 as a side cover slot 442, and the side cover 52 can be inserted into and transition-fitted with the side cover slot 442;
fig. 18 shows a specific structure of the outer cover 5, the outer cover 5 includes a top cover 51 and a side cover 52, the top cover 51 has an arc curved surface at its upper end, the lower end is a cylindrical surface at one end tangent to the curved surface, a power line interface 511 is left at one side of the cylindrical surface, the side cover 52 has a curved surface with a multi-segment curved surface combined and rotationally formed, the upper end of the side cover 52 is in smooth transition with the top cover 51, and the lower end of the side cover 52 is matched with the base 44.
The specific mode of the rotary driving is as follows: the rotary driving motor of the rotary driving slider drives the rotary driving wheel, the whole annular platform is driven to rotate due to the fact that the rotary driving wheel is meshed with the annular synchronous belt of the annular platform, and the spray head module is combined with the annular platform, so that rotary driving of the spray head module is completed;
the specific mode of radial linear driving is as follows: the radial driven module and the radial driving module of the annular platform are matched, the radial driving motor drives the radial driving wheel to rotate, the radial driving wheel is meshed with the radial transmission synchronous belt, so the radial transmission synchronous belt linearly moves along the radial direction, and the spray head module is connected to the radial transmission synchronous belt through a bolt, so that the radial linear driving of the spray head module is completed;
the specific way of lifting drive is: through the lift module lift driving motor drives the carousel rotates, the carousel rotates to receive around the driving rope, the plane bearing holds in the palm receives the ascending pulling force of driving rope to with the pulling force transmission to the lift lifting frame, the lift lifting frame drives whole annular module upward movement, and in a similar way, when the lift driving motor reverses, the carousel emits the driving rope, whole annular module downstream, the shower nozzle module with the combination of annular platform is accomplished from this right the lift drive of shower nozzle module.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (6)
1. The utility model provides a 3D printer based on cylindrical coordinate system which characterized in that: the printer comprises an annular module, a spray head module, a lifting module, a main body frame and an outer cover; the main body frame consists of a top cover, a support pillar, a baffle sleeve and a base; the support column is in interference fit with the column cap of the top cover and the column hole of the base; the blocking sleeve penetrates into the supporting column and is in transition fit with the supporting column, and the blocking sleeve is in contact with the upper surface of the base; the annular module comprises a rotary driving slide block and an annular platform; the rotary driving sliding block and the annular platform are meshed and connected with the rotary driving wheel through an annular synchronous belt; the upper end surface of the outer edge of the annular platform is in contact fit with the rotary driving slide block; the annular platform comprises an annular platform frame, an annular synchronous belt, a radial driven module and a radial driving module; the annular synchronous belt is tightly attached and fixedly connected to the outer side of the annular platform frame; the radial driven module and the radial driving module are respectively fixed on the annular platform frame, and the radial driven module and the radial driving module are connected into a whole by being meshed with the same synchronous belt; the annular platform frame main body is an annular metal frame, a cross beam is arranged at the diameter position of the annular metal frame, threaded holes are uniformly distributed in the outer surface of the annular metal frame and are used for being connected with an annular synchronous belt, an open slot is formed in one side of the cross beam and is a radial sliding groove, the length of the radial sliding groove exceeds the length of the radius of the annular platform frame, a motor frame is reserved on the other side of the radial sliding groove, and a radial driving motor is fixed on the motor frame; the annular module is fixedly connected with the lifting module through a lifting frame; the annular module is in sliding fit with the support column of the main body frame through a linear bearing; the spray head module is fixedly connected with a radial transmission synchronous belt of the annular module through a spray head elevator sliding rod; the lower end of the lifting module is fixedly connected with the annular platform frame through a lifting frame, and the upper end of the lifting module is fixedly connected with the top cover of the main body frame through a lifting driving motor.
2. The 3D printer based on the cylindrical coordinate system as claimed in claim 1, wherein: the rotary driving sliding block comprises a sliding block frame, a linear bearing, a rotary driving wheel and a rotary driving motor; the linear bearing is in interference fit with bearing holes on two sides of the sliding block frame, and the linear bearing is in sliding fit with a support column of the main body frame.
3. The 3D printer based on the cylindrical coordinate system as claimed in claim 2, wherein: bearing holes matched with the linear bearings are formed in the left end and the right end of the sliding block frame, holes in the top end of the sliding block frame are used for penetrating through a motor shaft of the rotary driving motor, an arc notch is formed in the upper end of the sliding block frame to prevent the annular platform from being interfered to perform rotary motion, and a corresponding notch is not formed in the lower end of the sliding block frame to support the annular platform.
4. The 3D printer based on the cylindrical coordinate system as claimed in claim 1, wherein: the spray head module comprises a spray head elevator sliding rod, a spray head discharging driving motor, a spray head cavity cover, a spray head cavity and a feeding screw rod; the top end of the spray head elevator sliding block is fixedly connected with the radial transmission synchronous belt; the rod shoulders of the nozzle elevator sliding block are arranged at two ends of a radial sliding chute of the annular platform frame; the lower end of a rod of the spray head elevator sliding block penetrates through a radial sliding groove of the annular platform frame to be in threaded connection with the spray head cavity cover; the spray head cavity cover is in threaded connection with the spray head cavity; the spray head discharging driving motor is fixedly connected with the spray head cavity cover, and a motor output shaft of the spray head discharging motor is in key connection with the spray head feeding screw rod.
5. The 3D printer based on the cylindrical coordinate system as claimed in claim 1, wherein: the lifting module comprises a lifting frame, a plane bearing support, a plane bearing, a transmission rope, a turntable and a lifting driving motor; the lower end of the lifting frame is connected with the annular platform frame through a bolt; one end of the transmission rope penetrates through a central hole and a plane shaft at the top end of the lifting frame and then is fixedly connected with the plane bearing support, the lower surface of the plane bearing is fixedly connected with the plane bearing support, and the upper surface of the plane bearing is fixedly connected with the top end of the lifting frame; the other end of the transmission rope is fixedly connected with the turntable; the turntable is connected with a lifting driving motor key.
6. The 3D printer based on the cylindrical coordinate system as claimed in claim 1, wherein: the outer cover comprises a top cover and a side cover; the upper end of the top cover is an arc curved surface, the lower end of the top cover is a cylindrical surface at one end tangent to the curved surface, and a power line interface is reserved on one side of the cylindrical surface; the side cover is a curved surface formed by combining a plurality of sections of curves and rotating, the upper end of the side cover is in smooth transition with the top cover, and the lower end of the side cover is matched with the base.
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| CN201811057208.1A CN109304860B (en) | 2018-09-11 | 2018-09-11 | 3D printer based on cylindrical coordinate system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162990A (en) * | 2014-07-29 | 2014-11-26 | 上海建工集团股份有限公司 | Building 3D printing device and method based on polar coordinate positioning |
| CN104842557A (en) * | 2015-04-16 | 2015-08-19 | 中国矿业大学 | Five-freedom-degree rapid forming processing apparatus |
| CN207256877U (en) * | 2017-06-15 | 2018-04-20 | 深圳市普伦特科技有限公司 | 3d printer |
| WO2018080331A1 (en) * | 2016-10-28 | 2018-05-03 | Instituto Superior Técnico | Modular additive manufacturing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162990A (en) * | 2014-07-29 | 2014-11-26 | 上海建工集团股份有限公司 | Building 3D printing device and method based on polar coordinate positioning |
| CN104842557A (en) * | 2015-04-16 | 2015-08-19 | 中国矿业大学 | Five-freedom-degree rapid forming processing apparatus |
| WO2018080331A1 (en) * | 2016-10-28 | 2018-05-03 | Instituto Superior Técnico | Modular additive manufacturing system |
| CN207256877U (en) * | 2017-06-15 | 2018-04-20 | 深圳市普伦特科技有限公司 | 3d printer |
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