CN116690972A - Additive manufacturing printing device suitable for on-orbit manufacturing of ultra-long scale structural member space - Google Patents

Additive manufacturing printing device suitable for on-orbit manufacturing of ultra-long scale structural member space Download PDF

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Publication number
CN116690972A
CN116690972A CN202310408373.1A CN202310408373A CN116690972A CN 116690972 A CN116690972 A CN 116690972A CN 202310408373 A CN202310408373 A CN 202310408373A CN 116690972 A CN116690972 A CN 116690972A
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CN
China
Prior art keywords
axis
printing
roller
platform
passive clamping
Prior art date
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Pending
Application number
CN202310408373.1A
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Chinese (zh)
Inventor
周佐新
石春阳
李林
丁继锋
刘冬
刘金童
郭庆磊
张从发
李潇
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Beijing Institute of Spacecraft System Engineering
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Beijing Institute of Spacecraft System Engineering
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Publication date
Application filed by Beijing Institute of Spacecraft System Engineering filed Critical Beijing Institute of Spacecraft System Engineering
Priority to CN202310408373.1A priority Critical patent/CN116690972A/en
Publication of CN116690972A publication Critical patent/CN116690972A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • B29C64/236—Driving means for motion in a direction within the plane of a layer
    • 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
    • B29C64/245—Platforms or substrates
    • 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
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/379—Handling of additively manufactured objects, e.g. using robots
    • 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
    • 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
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Robotics (AREA)

Abstract

The invention discloses an additive manufacturing printing device suitable for on-orbit manufacturing of an ultra-long structural member space, which comprises the following components: a horizontal-vertical moving printing platform, a printing head, a printing piece extruding platform, an integral frame and a printing piece; the horizontal-vertical movable printing platform is arranged on the integral frame, the printing head is arranged on the horizontal-vertical movable printing platform, and the horizontal-vertical movable printing platform is used for driving the printing head to move in the horizontal and vertical directions; the printing piece extrusion platform is arranged on the integral frame, the printing piece is supported on the printing piece extrusion platform, and the printing piece extrusion platform is used for clamping the printing piece along the Y-axis direction and limiting the printing piece along the X-axis direction; the printing piece can move in a translation manner along the Z-axis direction on the printing piece extrusion platform; the print cooperates with the printhead to achieve in-orbit additive manufacturing. The invention can print the ultra-long scale structural member on the track, and fills the partial gap of the additive manufacturing printer in the technical field of space on-track manufacturing of the ultra-long scale structural member.

Description

Additive manufacturing printing device suitable for on-orbit manufacturing of ultra-long scale structural member space
Technical Field
The invention belongs to the technical field of space on-orbit additive manufacturing and processing, and particularly relates to an additive manufacturing printing device suitable for space on-orbit manufacturing of an ultra-long scale structural member.
Background
The dimensions of structural members required by space on-orbit may be huge, and the common characteristics of the large-scale space structures are huge volume and complex structure, which far exceeds the limit of the carrying capacity of rockets and the envelope size of fairings, all current vehicles cannot meet the requirement of launching the vehicles from earth into orbit in independent units at one time, so that the vehicles need to be sent into orbit by certain technical means. However, if the choice is made to launch the rocket directly from the ground to bring the very long-scale structure into the space orbit, the transportation is also costly and is not affordable for the aerospace field.
At present, the aerospace field can only fold an ultra-long structural member on the ground for a plurality of times and put the structural member into a transport cabin, and then launch the structural member onto a preset orbit through a rocket. However, because the ultra-long structural member needs to be unfolded on the space orbit, the folding mechanism is very complex, and if the astronaut assembles the ultra-long structural member, the astronaut is also unnecessarily dangerous. In order to meet the folding requirement, each component part of the ultra-long-scale structural member needs to be softer, so that the problem that the strength and the rigidity of the ultra-long-scale structural member after being unfolded are poor, and the ultra-long-scale structural member is easy to unstably or fail in a space complex environment is caused.
In summary, if the conventional ground manufacturing on-orbit unfolding or assembling mode is adopted, the future ultra-large space facility construction is difficult to meet the requirement, and the space on-orbit manufacturing technology is an important technical approach for breaking the development of the future large space structure. The space on-orbit manufacturing technology mainly refers to a collection for in-situ manufacturing of target products in a space environment outside the earth by using carrying materials or utilizing external resources.
Disclosure of Invention
In view of the above, in order to solve the current situation that the space on-orbit ultra-long scale structural member field is troublesome, the invention provides an additive manufacturing printing device suitable for the space on-orbit manufacturing of the ultra-long scale structural member, which fills a part of the gap of the additive manufacturing printer in the technical field of the space on-orbit manufacturing of the ultra-long scale structural member, and can solve the problems mentioned in the background art.
The invention is realized by the following technical scheme:
an additive manufacturing printing device suitable for in-orbit manufacturing of an ultra-long scale structural member space, comprising: a horizontal-vertical moving printing platform, a printing head, a printing piece extruding platform, an integral frame and a printing piece;
the horizontal-vertical moving printing platform is arranged on the integral frame, the printing head is arranged on the horizontal-vertical moving printing platform, and the horizontal-vertical moving printing platform is used for driving the printing head to perform horizontal and vertical translational movements in a three-dimensional space coordinate system; the horizontal direction of the movement of the printing head is the X-axis direction, the vertical direction is the Y-axis direction, and the direction perpendicular to the XY plane is the Z-axis direction;
the printing piece extruding platform is arranged on the integral frame, the printing piece is supported on the printing piece extruding platform, and the printing piece extruding platform is used for clamping the printing piece along the Y-axis direction and limiting the printing piece along the X-axis direction; the printing piece can move in a translation manner along the Z-axis direction on the printing piece extrusion platform; the print cooperates with the printhead to achieve in-orbit additive manufacturing.
Further, the printing part extrusion platform comprises: the printing piece extruding platform frame, the Z-axis active rolling mechanism, the limit rolling mechanism and the passive clamping mechanism;
the two ends of the printing piece extruding platform frame along the Z-axis direction are opened;
the Z-axis active rolling mechanism is arranged on the bottom surface of the printing part extrusion platform frame and comprises more than one group of active rolling components, and more than two groups of active rolling components are arranged along the Z-axis direction; each active rolling component at least comprises an active sending roller, and the axis of the active sending roller is arranged along the X-axis direction; the printing piece is supported on an active delivery roller along the Z axis, and the active delivery roller is used for pushing the printing piece to move in a translation way along the Z axis;
the limit rolling mechanism comprises more than one group of limit rolling components; each group of limiting rolling components are respectively arranged between two adjacent active delivery rollers; more than two groups of limit rolling assemblies are arranged along the Z-axis direction; each group of limiting rolling assemblies comprises a printing piece fixing clamping bottom plate and at least two roller groups; the horizontal height of the printing piece fixing and clamping bottom plate is smaller than or equal to the highest point of the active feeding roller; at least two roller groups are respectively arranged at two sides of the upper surface of the printing piece fixing and clamping bottom plate, and the distance between the roller groups at two sides is equal to the width of the printing piece; the printing piece is positioned between two roller groups arranged along the X axis, and the roller groups on the two sides are used for limiting the printing piece in the X axis direction;
the passive clamping mechanism comprises a plurality of groups of passive clamping assemblies, and the groups of passive clamping assemblies are arranged in parallel along the Z-axis direction; each group of passive clamping assemblies clamps the printing piece in the Y-axis direction through a passive clamping spring.
Further, each set of passive clamping assemblies includes, in addition to the passive clamping springs: the device comprises a passive clamping mechanism mounting plate, a linear bearing, a linear guide rail, a passive clamping roller bracket, a passive clamping roller optical axis and a passive clamping roller;
the passive clamping mechanism mounting plate is fixed on the top of the printing part extrusion platform frame; two linear bearings are arranged on each passive clamping mechanism mounting plate; the top of the linear bearing extends out of the upper surface of the passive clamping mechanism mounting plate, the bottom of the linear bearing extends out of the lower surface of the top of the printing part extruding platform frame, and the axis of the linear bearing is arranged along the vertical direction;
the top and the bottom of the linear guide rail are both provided with threads, and the middle part is a polished rod; the linear guide rail passes through the linear bearing, the polished rod of the linear guide rail is in sliding fit with the linear bearing, and the linear bearing can perform vertical linear motion along the vertical direction; both ends of the linear guide rail extend out of the linear bearing, and a nut is screwed on the top thread of the linear guide rail and serves as the upper limit of the linear guide rail;
the bottoms of the two linear guide rails on each passive clamping mechanism mounting plate are in threaded connection with the bottom plate of the inverted U-shaped passive clamping roller bracket; each linear guide rail is provided with a passive clamping spring, the passive clamping spring is positioned between the bottom of the linear bearing and the bottom plate of the passive clamping roller bracket, and the passive clamping springs are in a compressed state; a passive clamping roller optical axis is arranged between the two side plates of each passive clamping roller support, the axis of the passive clamping roller optical axis is arranged along the horizontal direction, and the passive clamping roller optical axis can rotate around the axis of the passive clamping roller optical axis; the passive clamping roller is coaxially locked on the optical axis of the passive clamping roller, and the passive clamping roller can synchronously rotate along with the optical axis of the passive clamping roller;
the top of printing piece is contradicted on passive clamping roller of passive fixture, and passive clamping spring is compressed, carries out the centre gripping of Y axle direction to the printing piece through the elasticity that passive clamping spring provided.
Further, the passive clamping mechanism further comprises an angular displacement encoder; the angle displacement encoder is coaxially connected with the end part of the optical axis of any one of the passive clamping rollers through an encoder-passive clamping roller coupler and is used for measuring the rotation angle of the optical axis of the passive clamping roller, namely the rotation angle of the passive clamping roller.
Further, each roller group comprises a limiting roller shaft and a limiting roller;
a slotted hole groove is formed in the printing piece fixing and clamping bottom plate; the bottom of the limiting roller shaft is provided with threads, the bottom of the limiting roller shaft passes through a slotted hole groove of the printing piece fixing and clamping bottom plate and is then fastened on the printing piece fixing and clamping bottom plate through a nut, the position of the limiting roller shaft can be adjusted in the slotted hole groove, and the axis of the limiting roller shaft is arranged along the vertical direction; the top of the limiting roller shaft is a polished rod, the middle part of the limiting roller shaft is provided with a shaft shoulder, and the limiting roller is coaxially sleeved in the middle part of the limiting roller shaft through a bearing after penetrating through the polished rod of the limiting roller shaft, and axial limiting is realized through the shaft shoulder; the limiting idler wheel can rotate relative to the limiting idler wheel shaft.
Further, the active scrolling component comprises: the device comprises a Z-axis stepping motor, a Z-axis planetary gear reducer, a Z-axis stepping motor support, a Z-axis coupler, four roller rotating supports, two roller central shafts, two active feeding rollers, two Z-axis synchronous wheels and a Z-axis synchronous belt, wherein the Z-axis stepping motor is arranged on the Z-axis planetary gear reducer;
the axes of the two roller center shafts are arranged in parallel along the horizontal direction, and each roller center shaft is respectively arranged on the lower bottom plate of the printing piece extrusion platform through two roller rotating supports; the roller center shafts are rotatable, and each roller center shaft is coaxially locked with an active feeding roller;
a motor shaft of the Z-axis stepping motor is coaxially and fixedly connected with the input end of the Z-axis planetary gear reducer; the Z-axis stepping motor and the Z-axis planetary gear reducer which are fixedly connected are fixed on a side plate of the printing part extrusion platform frame through a Z-axis stepping motor support; the output end of the Z-axis planetary gear reducer is coaxially connected with one end of the central shaft of any roller through a Z-axis coupler;
the other end of each roller center shaft is coaxially provided with a Z-axis synchronizing wheel, a Z-axis synchronizing belt which is matched with the gear tooth specification of the Z-axis synchronizing wheel is arranged between the two Z-axis synchronizing wheels, and synchronous rotation of the two active delivery rollers is realized through the Z-axis synchronizing wheels and the Z-axis synchronizing belt, so that synchronous driving of the two active delivery rollers by one motor is realized.
Further, the printing part extrusion platform frame comprises: four large-sized plate and printing piece extrusion platform reinforcing plates;
the adjacent large plates are all fastened and connected through bolts to form a rectangular frame, and two ends of the rectangular frame along the Z-axis direction are openings; the bottom surface of the rectangular frame is a lower bottom plate of the printing piece extruding platform, the top surface of the rectangular frame is an upper bottom plate of the printing piece extruding platform, and the two side surfaces of the rectangular frame are respectively a left side plate of the printing piece extruding platform and a right side plate of the printing piece extruding platform; the lower bottom plate of the printing part extrusion platform is fixed on the horizontal bottom plate of the integral frame; the right side plate of the printing part extrusion platform, the left side plate of the printing part extrusion platform and the side surface of the upper bottom plate of the printing part extrusion platform are provided with a plurality of size through holes in the Y-axis direction, so that the upper bottom plate of the printing part extrusion platform can be adjusted in the Y-axis direction; the printing piece extrusion platform reinforcing plate is connected to the two adjacent large-scale plates through bolts.
Further, the horizontal-vertical moving printing platform includes: a horizontal direction moving mechanism and a vertical direction moving mechanism;
the horizontal direction moving mechanism includes: an X-axis stepping motor, an X-axis coupler and an X-axis screw sliding table; the X-axis screw sliding table is arranged on a vertical backboard of the integral frame, and a sliding block on the X-axis screw sliding table can perform linear motion along the X-axis direction; the X-axis stepping motor is connected with the X-axis screw sliding table through an X-axis coupler and is used for driving a sliding block of the X-axis screw sliding table to move along the X-axis direction; an X-axis positive limit sensor and an X-axis negative limit sensor are respectively arranged at two limit positions of the sliding block movement of the X-axis screw sliding table, namely at the maximum displacement positions of the X-axis positive direction and the negative direction of the sliding block movement;
the vertical direction moving mechanism includes: a Y-axis stepping motor, a Y-axis coupler and a Y-axis screw sliding table; the Y-axis screw sliding table is arranged on a sliding block of the X-axis screw sliding table, and the sliding block on the Y-axis screw sliding table can perform linear motion along the Y-axis direction; the Y-axis stepping motor is connected with the Y-axis screw sliding table through a Y-axis coupler and is used for driving a sliding block of the Y-axis screw sliding table to move along the Y-axis direction; a Y-axis positive limit sensor and a Y-axis negative limit sensor are respectively arranged at two limit positions of the sliding block movement of the Y-axis lead screw sliding table, namely at the maximum displacement positions of the positive direction and the negative direction of the Y-axis of the sliding block movement; the printing head is arranged on the sliding block of the Y-axis screw sliding table.
Further, the printhead includes: the device comprises a feeding stepping motor, an extruder, an extrusion head, a laser displacement sensor and a printing head-platform connecting piece;
the printing head-platform connecting piece is fixed on the horizontal-vertical movable printing platform, the feeding stepping motor and the extruder are both arranged on the printing head-platform connecting piece, and the feeding stepping motor is connected with the extruder and used for driving the extruder to work; the output end of the extruder is provided with an extrusion head; a laser displacement sensor is mounted on the printhead-platform connection for measuring the distance between the printhead and the printing element.
Further, the integral frame includes: an aluminum alloy frame, a horizontal bottom plate, a vertical back plate and an integral frame reinforcing plate;
the aluminum alloy frame is formed by splicing and fixedly connecting aluminum alloy corner pieces, bolts and ship-shaped nuts; the horizontal bottom plate and the vertical back plate are fixedly connected to the aluminum alloy frame through bolts and ship-shaped nuts; the integral frame reinforcing plate is fixedly connected with two side surfaces of the aluminum alloy frame through bolts and ship-shaped nuts.
The beneficial effects are that:
(1) The invention provides an additive manufacturing printing device suitable for on-orbit manufacturing of an ultra-long structural member space, which aims at solving the problems that the existing on-orbit ultra-long structural member is difficult to directly transport into orbit, needs to be folded on the ground, has poor strength and rigidity after on-orbit unfolding and the like.
(2) The invention designs a limit rolling mechanism and a passive clamping mechanism aiming at an ultra-long scale printing piece; the limiting rollers arranged in a line on the side face of the printing piece can limit the position constraint of the printing piece in the Z-axis direction in a translational mode, and the passive clamping rollers at the top enable the printing piece to be subjected to larger clamping force in the vertical direction. The combination of the two mechanisms can limit the translation of the printing piece in the space along the Z-axis direction only, and completely restrict the other five degrees of freedom, namely the translation along the X-axis and the Y-axis directions and the torsion along the three-axis directions, and can increase the friction between the printing piece and the initiative delivery roller to the greatest extent, so that the translation of the printing piece along the Z-axis direction is more accurate, and the printing precision and the processing quality of on-orbit manufacturing are improved.
(3) The invention provides a Z-axis active rolling mechanism for horizontally pushing out a printing piece, wherein an active sending roller contained in the motion mechanism can rotate along with the driving of a motor, the whole printing piece can be pushed out of a device in the printing process by the friction force of the active sending roller and the printing piece, an ultra-long structural piece can be printed out in the minimum space range, and the structural piece with infinite length can be theoretically printed, so that the requirement of manufacturing the ultra-long printing piece in an on-orbit space is met.
(4) According to the invention, the right side plate of the printing piece extruding platform, the left side plate of the printing piece extruding platform and the side surface of the upper bottom plate of the printing piece extruding platform are provided with a plurality of through holes with sizes in the Y-axis direction, so that the upper bottom plate of the printing piece extruding platform can be adjusted in the Y-axis direction, and the height of the passive clamping mechanism can be further adjusted, thereby adjusting the width and the height of a printing piece; in addition, the invention is suitable for the cross section shapes of various ultra-long scale structural members, and has great engineering guidance significance for the field of space on-orbit additive manufacturing printing devices.
(5) The X-axis positive limit sensor and the X-axis negative limit sensor are respectively arranged at two limit positions of the sliding block movement of the X-axis screw sliding table; two limit positions of the sliding block movement of the Y-axis screw sliding table are respectively provided with a Y-axis positive limit sensor and a Y-axis negative limit sensor; the motion of the printing head can be monitored in place in real time and limited.
(6) According to the invention, the integral frame reinforcing plates are fixedly connected to the two side surfaces of the aluminum alloy frame through bolts and ship-shaped nuts, so that the integral stress and the structure of the aluminum alloy frame are more stable.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a diagram of a horizontal-vertical motion printing platform according to the present invention;
FIG. 3 is a diagram of a print extrusion platform in accordance with the present invention;
FIG. 4 is a diagram of an overall frame of the present invention;
FIG. 5 is a front view of the present invention in an operative condition;
FIG. 6 is a left side view of the present invention in operation;
1, a horizontal-vertical mobile printing platform; 11. a horizontal direction moving mechanism; 110. an X-axis stepper motor; 111. an X-axis coupler; 112. an X-axis screw sliding table; 113. an X-axis forward limit sensor; 114. an X-axis negative limit sensor; 12. a vertical direction moving mechanism; 120. a Y-axis stepper motor; 121. y-axis coupling; 122. y-axis screw sliding table; 123. y-axis positive limit sensor; 124. y-axis negative limit sensor; 13. a print head; 130. a feeding stepping motor; 131. an extruder; 132. an extrusion head; 133. a laser displacement sensor; 134. a printhead-platform connection; 135. a sensor connection; 2. a print extrusion platform; 20. extruding a printing piece out of the platform frame; 200. extruding a printing piece from a lower bottom plate of the platform; 201. a left side plate of the printing part extrusion platform; 202; extruding a right side plate of the platform by a printing piece; 203. extruding a printing piece from an upper bottom plate of the platform; 204. extruding the printing piece and the platform reinforcing plate; 21. a Z-axis active rolling mechanism; 210. a Z-axis stepper motor; 211. a Z-axis planetary gear reducer; 212. a Z-axis stepping motor support; 213. a Z-axis coupler; 214. the roller rotates the support; 215. a roller center shaft; 216. actively feeding out the roller; 217. a Z-axis synchronizing wheel; 218. a Z-axis synchronous belt; 22. a limit rolling mechanism; 220. the printing piece is fixedly clamped on the bottom plate; 221. limiting the roller shaft; 222. limiting idler wheels; 23. a passive clamping mechanism; 230. a passive clamping mechanism mounting plate; 231. a linear bearing; 232. a linear guide rail; 233. an angular displacement encoder; 234. encoder-passive grip roller coupling; 235. a passive clamping spring; 236. passively clamping the roller bracket; 237. passively clamping the optical axis of the roller; 238. passively clamping the roller; 3. an integral frame; 300. an aluminum alloy frame; 301. a horizontal bottom plate; 302. a vertical back plate; 303. an integral frame reinforcing plate; 4. and printing the piece.
Detailed Description
The invention will now be described in detail by way of example with reference to the accompanying drawings.
The embodiment provides an additive manufacturing printing device suitable for on-orbit manufacturing of an ultra-long scale structural member space, as shown in fig. 1, 5 and 6, comprising: a horizontal-vertical moving printing platform 1, a printing head 13, a printing piece extruding platform 2, an integral frame 3 and a printing piece 4 in a working state;
as shown in fig. 4, the integral frame 3 includes: an aluminum alloy frame 300, a horizontal bottom plate 301, a vertical back plate 302, and an integral frame stiffener 303; the aluminum alloy frame 300 is formed by splicing and fixedly connecting aluminum alloy corner pieces, bolts and ship-shaped nuts; the horizontal bottom plate 301 and the vertical back plate 302 are fixedly connected to the aluminum alloy frame 300 through bolts and ship nuts; the integral frame reinforcing plates 303 are fixedly connected to the two side surfaces of the aluminum alloy frame 300 through bolts and ship-shaped nuts, so that the integral stress and the structure of the aluminum alloy frame 300 are more stable;
as shown in fig. 2, the horizontal-vertical moving printing platform 1 is fixedly connected to the vertical back plate 302 of the integral frame 3 through bolts; the horizontal-vertical movement printing platform 1 includes: a horizontal direction moving mechanism 11 and a vertical direction moving mechanism 12;
the horizontal direction moving mechanism 11 includes: an X-axis stepper motor 110, an X-axis coupler 111 and an X-axis screw sliding table 112; the X-axis screw sliding table 112 is arranged on the vertical back plate 302 of the integral frame 3, and a sliding block on the X-axis screw sliding table 112 can move linearly along the horizontal direction, so that the horizontal direction of the sliding block of the X-axis screw sliding table 112 moves to be the X-axis direction; the X-axis stepping motor 110 is connected with the X-axis screw sliding table 112 through an X-axis coupler 111, and the X-axis stepping motor 110 is used for driving a sliding block of the X-axis screw sliding table 112 to move along the X-axis direction; an X-axis positive limit sensor 113 and an X-axis negative limit sensor 114 are respectively arranged at two limit positions of the sliding block movement of the X-axis screw sliding table 112, namely at the maximum displacement positions of the X-axis positive direction and the negative direction of the sliding block movement;
the vertical direction moving mechanism 12 includes: a Y-axis stepper motor 120, a Y-axis coupler 121 and a Y-axis screw slipway 122; the Y-axis screw sliding table 122 is mounted on the sliding block of the X-axis screw sliding table 112, the sliding block on the Y-axis screw sliding table 122 can move linearly along the vertical direction, so that the vertical direction of the sliding block of the Y-axis screw sliding table 122 moves to be the Y-axis direction, the Y-axis direction is perpendicular to the X-axis direction, and the direction perpendicular to the XY plane is the Z-axis direction; the Y-axis stepper motor 120 is connected with the Y-axis screw sliding table 122 through a Y-axis coupler 121, and the Y-axis stepper motor 120 is used for driving a sliding block of the Y-axis screw sliding table 122 to move along the Y-axis direction; a Y-axis positive limit sensor 123 and a Y-axis negative limit sensor 124 are respectively arranged at two limit positions of the sliding block movement of the Y-axis lead screw sliding table 122, namely at the maximum displacement positions of the positive direction and the negative direction of the Y-axis of the sliding block movement;
the horizontal moving mechanism 11 and the vertical moving mechanism 12 can be selected according to the printing size, and can be all moving executing mechanisms such as a screw sliding table or a synchronous pulley which are currently sold in the market or exist in any published patent or technology and can be matched with the invention;
the printing head 13 is mounted on a sliding block of the Y-axis screw sliding table 122, and the horizontal direction moving mechanism 11 and the vertical direction moving mechanism 12 respectively drive the printing head 13 to execute translational movement in the X-axis direction and the Y-axis direction in a three-dimensional space coordinate system; the print head 13 includes: a feed stepper motor 130, an extruder 131, an extrusion head 132, a laser displacement sensor 133, a printhead-platen connection 134, and a sensor connection 135;
the printing head-platform connector 134 is fixed on a sliding block of the Y-axis screw sliding table 122, the feeding stepper motor 130 and the extruder 131 are both arranged on the printing head-platform connector 134, and the feeding stepper motor 130 is connected with the extruder 131 for driving the extruder 131 to work; an output end of the extruder 131 is provided with an extrusion head 132; a laser displacement sensor 133 is mounted on the printhead-stage connector 134 via a sensor connector 135 for measuring the distance between the printhead 13 and the printing element 4;
wherein the printhead 13 may be of a printhead construction currently on the market or in any of the additive manufacturing printing technologies of the disclosed patents and technologies;
as shown in fig. 3, the print extruding platform 2 is fixedly connected to a horizontal bottom plate 301 of the integral frame 3 by bolts, and the print extruding platform 2 includes: the printing part extruding platform frame 20, the Z-axis active rolling mechanism 21, the limit rolling mechanism 22 and the passive clamping mechanism 23;
the print extrusion stage frame 20 includes: four large plate members and a print extrusion platform stiffener 204;
the adjacent large plates are fastened and connected through a plurality of bolts on the left side surface and the right side surface to form a rectangular frame, and two ends of the rectangular frame along the Z-axis direction are openings; the bottom surface of the rectangular frame is a lower bottom plate 200 of the printing piece extruding platform, the top surface of the rectangular frame is an upper bottom plate 203 of the printing piece extruding platform, and the two side surfaces of the rectangular frame are a left side plate 201 of the printing piece extruding platform and a right side plate 202 of the printing piece extruding platform respectively; the printing part extrusion platform lower base plate 200 is fixed on a horizontal base plate 301 of the integral frame 3; the right side plate 202 of the printing piece extrusion platform, the left side plate 201 of the printing piece extrusion platform and the side surface of the upper bottom plate 203 of the printing piece extrusion platform are provided with a plurality of through holes with sizes in the Y-axis direction, so that the upper bottom plate 203 of the printing piece extrusion platform can be adjusted in the Y-axis direction; the printing part extrusion platform reinforcing plate 204 is connected to two adjacent large-scale plates through bolts, so that the whole stress and the structure of the printing part extrusion platform frame 20 are more stable;
the Z-axis active scrolling mechanism 21 includes: more than one set of active scrolling components; the embodiment adopts two groups of active rolling components; the two groups of active rolling components are arranged along the Z-axis direction; the active rolling components all comprise: a Z-axis stepping motor 210, a Z-axis planetary gear reducer 211, a Z-axis stepping motor support 212, a Z-axis coupler 213, four roller rotating supports 214, two roller center shafts 215, two driving feeding rollers 216, two Z-axis synchronizing wheels 217 and a Z-axis synchronizing belt 218;
the axes of the two roller center shafts 215 are arranged in parallel along the X-axis direction, and each roller center shaft 215 is respectively arranged on the lower bottom plate 200 of the printing piece extrusion platform through two roller rotating supports 214, so that the whole Z-axis active rolling mechanism 21 is supported; the roller central shafts 215 are rotatable, each roller central shaft 215 is coaxially provided with an active feeding roller 216, and the active feeding rollers 216 are positioned and installed with the roller central shafts 215 through a boss-groove and are fixedly connected with each other on the end face by bolts;
a motor shaft of the Z-axis stepping motor 210 is coaxially connected with an input end of the Z-axis planetary gear reducer 211, and the motor shaft and the input end are fixedly connected through bolts; the Z-axis stepping motor 210 and the Z-axis planetary gear reducer 211 which are fixedly connected are fixed on the left side plate 201 of the printing part extrusion platform through bolts and a Z-axis stepping motor support 212; the output end of the Z-axis planetary gear reducer 211 is coaxially connected with the end part of any roller central shaft 215, which is closer to the left side plate 201 of the printing part extrusion platform, through a Z-axis coupler 213;
a Z-axis synchronizing wheel 217 is coaxially arranged at the end part of each roller center shaft 215, which is closer to the right side plate 202 of the printing part extrusion platform, a Z-axis synchronizing belt 218 which is matched with the gear tooth specification of the Z-axis synchronizing wheel 217 is arranged between the two Z-axis synchronizing wheels 217, and the synchronous rotation of the two active delivery rollers 216 is realized through the Z-axis synchronizing wheel 217 and the Z-axis synchronizing belt 218, so that the synchronous driving of the two active delivery rollers 216 by one motor is realized;
the limit rolling mechanism 22 comprises more than one group of limit rolling components; the embodiment adopts three groups of limit rolling components; each group of limiting rolling components is respectively arranged between two adjacent active delivery rollers 216; the three groups of limit rolling components are arranged along the Z-axis direction; each group of limiting rolling assemblies comprises a printing piece fixing clamping bottom plate 220 and at least two rolling wheel groups; in the embodiment, four roller groups are adopted, wherein each two roller groups in the four roller groups are a pair, and the two pairs of roller groups are respectively arranged on two sides of the upper surface of the printing part fixing and clamping bottom plate 220; the distance between the two pairs of roller groups is adjusted according to the width of the printing piece 4; each roller set comprises a limit roller shaft 221 and a limit roller 222;
the printing piece fixing and clamping bottom plate 220 is fixedly connected to the printing piece extrusion platform lower bottom plate 200 through bolts, and the horizontal height of the printing piece fixing and clamping bottom plate 220 is smaller than or equal to the highest point of the active feeding roller 216; a slotted hole groove is processed on the printing piece fixing and clamping bottom plate 220; the bottom of the limiting roller shaft 221 is provided with threads, the bottom of the limiting roller shaft 221 passes through a slotted hole groove of the printing piece fixing and clamping bottom plate 220 and is fastened on the printing piece fixing and clamping bottom plate 220 through a nut, the position of the limiting roller shaft 221 can be adjusted in the slotted hole groove, and the axis of the limiting roller shaft 221 is arranged along the vertical direction; the top of the limit roller shaft 221 is a polished rod, the middle part is provided with a shaft shoulder, and the limit roller 222 is coaxially sleeved in the middle part of the limit roller shaft 221 through a bearing after penetrating through the polished rod of the limit roller shaft 221, and axial limit is realized through the shaft shoulder; the limit roller 222 can rotate relative to the limit roller shaft 221; the total number of the limit rollers 222 is not an upper limit, but the total number of the limit rollers 222 is a lower limit to meet the requirement that two or more limit rollers 222 form a two-row structure along the X axis;
the passive clamping mechanism 23 includes: sets of passive gripping assemblies, angular displacement encoders 233, and encoder-passive gripping roller couplers 234; the passive clamping assemblies are arranged in parallel along the Z-axis direction; each set of passive clamping assemblies includes: the passive clamping mechanism comprises a passive clamping mechanism mounting plate 230, a linear bearing 231, a linear guide rail 232, a passive clamping spring 235, a passive clamping roller bracket 236, a passive clamping roller optical axis 237 and a passive clamping roller 238;
the passive clamping mechanism mounting plate 230 is positioned and mounted on the upper bottom plate 203 of the printing part extrusion platform through a boss-groove, and is fixedly connected through bolts; two linear bearings 231 are mounted on each passive clamping mechanism mounting plate 230; each linear bearing 231 passes through a positioning hole on the passive clamping mechanism mounting plate 230 and is fixedly connected to the passive clamping mechanism mounting plate 230 through a bolt, the top of each linear bearing 231 extends out of the upper surface of the passive clamping mechanism mounting plate 230, the bottom of each linear bearing 231 extends out of the lower surface of the upper bottom plate 203 of the printing part extrusion platform, and the axis of each linear bearing 231 is arranged along the vertical direction; the top and the bottom of the linear guide rail 232 are both provided with threads, and the middle part is a polished rod; the linear guide rail 232 passes through the linear bearing 231, and the polished rod of the linear guide rail 232 is in sliding fit with the linear bearing 231, so that the linear bearing 231 can perform up-and-down linear motion along the vertical direction; both ends of the linear guide rail 232 extend out of the linear bearing 231, and a nut is screwed on the top thread of the linear guide rail 232 and serves as the upper limit of the linear guide rail 232; the bottoms of the two linear guide rails 232 on each passive clamping mechanism mounting plate 230 are in threaded connection with the bottom plate of the inverted U-shaped passive clamping roller bracket 236; each linear guide rail 232 is provided with a passive clamping spring 235, the passive clamping spring 235 is positioned between the bottom of the linear bearing 231 and the bottom plate of the passive clamping roller bracket 236, and the passive clamping spring 235 is in a compressed state; a passive clamping roller optical axis 237 is arranged between the two side plates of each passive clamping roller bracket 236, the passive clamping roller optical axis 237 is axially limited by a clamp spring, the axis of the passive clamping roller optical axis 237 is arranged along the horizontal direction, and the passive clamping roller optical axis 237 can rotate around the axis of the passive clamping roller optical axis 237; the passive clamping roller 238 is coaxially locked on the passive clamping roller optical axis 237, and the passive clamping roller 238 can synchronously rotate along with the passive clamping roller optical axis 237; in this embodiment, the number of the bottom plates 203 of the passive clamping mechanism 23 on the printing part extrusion platform is seven;
the angular displacement encoder 233 is coaxially connected to the end of any one of the passive clamping roller optical axes 237 through an encoder-passive clamping roller coupling 234, and is used for measuring the rotation angle of the passive clamping roller optical axis 237, namely the rotation angle of the passive clamping roller 238;
the strip-shaped printing piece 4 is arranged in the printing piece extrusion platform frame 20 and is arranged along the Z-axis direction, the bottom surface of the printing piece 4 is supported on the active feeding roller 216, and the printing piece 4 is positioned between two rows of limit rollers 222 arranged along the X-axis; the top of the printing member 4 abuts against the passive clamping roller 238 of the passive clamping mechanism 23, the passive clamping spring 235 is compressed, and clamping of the printing member 4 in the Y-axis direction is achieved by the elastic force provided by the passive clamping spring 235.
Working principle: as shown in fig. 5 and 6, an additive manufacturing printing device suitable for on-orbit manufacturing of an ultra-long structural member space needs a section of printed and formed printing piece 4 as a reference for continuous printing in working;
by manually pushing the printing part 4 into the printing part extruding platform 2, as the two linear guide rails 232 in each set of passive clamping mechanisms 23 are respectively provided with a passive clamping spring 235, the distance between the lowest end of the passive clamping roller 238 at the top and the active sending roller 216 is smaller than the height of the printing part 4, and the distance between the limiting rollers 222 on two sides in the three sets of limiting rolling mechanisms 22 is slightly smaller than the width of the printing part 4; because the printing piece 4 has certain elasticity, and after the printing piece 4 is pushed into the printing piece extrusion platform 2, the limit rollers 222, the passive clamping rollers 238 and the active sending rollers 216 on two sides are tightly attached to the outer surface of the printing piece 4, so that the printing piece 4 can be subjected to larger clamping force and rolling friction force in two directions of horizontal and vertical, and the limit rollers 222 on one side are arranged in a straight line along the Z-axis direction, so that the printing piece 4 has a guiding effect, and the effect is enough to ensure that the printing piece 4 cannot slightly float or twist in the X-axis and Y-axis directions and twist in the Z-axis direction; the Z-axis stepping motor 210 is driven to rotate through electric control, the roller central shaft 215 is driven to synchronously rotate with the active feeding roller 216, meanwhile, the Z-axis synchronous wheel 217 at the other end of the roller central shaft 215 is driven to rotate, and the other active feeding roller 216 can be driven to synchronously rotate through belt transmission of the Z-axis synchronous belt 218;
because the printing piece 4 is subjected to larger clamping force and rolling friction force in the horizontal direction and the vertical direction, the printing piece 4 carries out accurate translational movement along with the rotation of the active rolling mechanism 21 under the drive of the Z-axis stepping motor 210, and finally the printing piece 4 reaches a preset position and starts printing; in the printing process, one end of the additive manufacturing of the printing piece 4 is continuously printed, and meanwhile, the whole printing piece 4 is pushed out layer by the Z-axis active rolling mechanism 21 according to a digital model printing route; the cross-sectional shape of the printing member 4 is not limited, but in this embodiment, the cross-section of the printing member 4 is triangular, but may be any other cross-sectional shape that can be pushed out, limited, and clamped by the Z-axis active rolling mechanism 21, the limiting rolling mechanism 22, and the passive clamping mechanism 23, respectively, during actual printing.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An additive manufacturing printing device suitable for in-orbit manufacturing of an ultra-long scale structural member space, comprising: a horizontal-vertical moving printing platform, a printing head, a printing piece extruding platform, an integral frame and a printing piece;
the horizontal-vertical moving printing platform is arranged on the integral frame, the printing head is arranged on the horizontal-vertical moving printing platform, and the horizontal-vertical moving printing platform is used for driving the printing head to perform horizontal and vertical translational movements in a three-dimensional space coordinate system; the horizontal direction of the movement of the printing head is the X-axis direction, the vertical direction is the Y-axis direction, and the direction perpendicular to the XY plane is the Z-axis direction;
the printing piece extruding platform is arranged on the integral frame, the printing piece is supported on the printing piece extruding platform, and the printing piece extruding platform is used for clamping the printing piece along the Y-axis direction and limiting the printing piece along the X-axis direction; the printing piece can move in a translation manner along the Z-axis direction on the printing piece extrusion platform; the print cooperates with the printhead to achieve in-orbit additive manufacturing.
2. An additive manufacturing printing apparatus adapted for in-orbit fabrication of an ultra-long scale structural member space according to claim 1, wherein said print extrusion platform comprises: the printing piece extruding platform frame, the Z-axis active rolling mechanism, the limit rolling mechanism and the passive clamping mechanism;
the two ends of the printing piece extruding platform frame along the Z-axis direction are opened;
the Z-axis active rolling mechanism is arranged on the bottom surface of the printing part extrusion platform frame and comprises more than one group of active rolling components, and more than two groups of active rolling components are arranged along the Z-axis direction; each active rolling component at least comprises an active sending roller, and the axis of the active sending roller is arranged along the X-axis direction; the printing piece is supported on an active delivery roller along the Z axis, and the active delivery roller is used for pushing the printing piece to move in a translation way along the Z axis;
the limit rolling mechanism comprises more than one group of limit rolling components; each group of limiting rolling components are respectively arranged between two adjacent active delivery rollers; more than two groups of limit rolling assemblies are arranged along the Z-axis direction; each group of limiting rolling assemblies comprises a printing piece fixing clamping bottom plate and at least two roller groups; the horizontal height of the printing piece fixing and clamping bottom plate is smaller than or equal to the highest point of the active feeding roller; at least two roller groups are respectively arranged at two sides of the upper surface of the printing piece fixing and clamping bottom plate, and the distance between the roller groups at two sides is equal to the width of the printing piece; the printing piece is positioned between two roller groups arranged along the X axis, and the roller groups on the two sides are used for limiting the printing piece in the X axis direction;
the passive clamping mechanism comprises a plurality of groups of passive clamping assemblies, and the groups of passive clamping assemblies are arranged in parallel along the Z-axis direction; each group of passive clamping assemblies clamps the printing piece in the Y-axis direction through a passive clamping spring.
3. An additive manufacturing printing apparatus adapted for in-orbit fabrication of an ultra-long scale structural member space according to claim 2, wherein each set of passive clamping assemblies comprises, in addition to the passive clamping springs: the device comprises a passive clamping mechanism mounting plate, a linear bearing, a linear guide rail, a passive clamping roller bracket, a passive clamping roller optical axis and a passive clamping roller;
the passive clamping mechanism mounting plate is fixed on the top of the printing part extrusion platform frame; two linear bearings are arranged on each passive clamping mechanism mounting plate; the top of the linear bearing extends out of the upper surface of the passive clamping mechanism mounting plate, the bottom of the linear bearing extends out of the lower surface of the top of the printing part extruding platform frame, and the axis of the linear bearing is arranged along the vertical direction;
the top and the bottom of the linear guide rail are both provided with threads, and the middle part is a polished rod; the linear guide rail passes through the linear bearing, the polished rod of the linear guide rail is in sliding fit with the linear bearing, and the linear bearing can perform vertical linear motion along the vertical direction; both ends of the linear guide rail extend out of the linear bearing, and a nut is screwed on the top thread of the linear guide rail and serves as the upper limit of the linear guide rail;
the bottoms of the two linear guide rails on each passive clamping mechanism mounting plate are in threaded connection with the bottom plate of the inverted U-shaped passive clamping roller bracket; each linear guide rail is provided with a passive clamping spring, the passive clamping spring is positioned between the bottom of the linear bearing and the bottom plate of the passive clamping roller bracket, and the passive clamping springs are in a compressed state; a passive clamping roller optical axis is arranged between the two side plates of each passive clamping roller support, the axis of the passive clamping roller optical axis is arranged along the horizontal direction, and the passive clamping roller optical axis can rotate around the axis of the passive clamping roller optical axis; the passive clamping roller is coaxially locked on the optical axis of the passive clamping roller, and the passive clamping roller can synchronously rotate along with the optical axis of the passive clamping roller;
the top of printing piece is contradicted on passive clamping roller of passive fixture, and passive clamping spring is compressed, carries out the centre gripping of Y axle direction to the printing piece through the elasticity that passive clamping spring provided.
4. An additive manufacturing printing device adapted for in-orbit fabrication of ultra-long scale structural members according to claim 3, wherein said passive clamping mechanism further comprises an angular displacement encoder; the angle displacement encoder is coaxially connected with the end part of the optical axis of any one of the passive clamping rollers through an encoder-passive clamping roller coupler and is used for measuring the rotation angle of the optical axis of the passive clamping roller, namely the rotation angle of the passive clamping roller.
5. An additive manufacturing printing device suitable for in-orbit manufacture of ultra-long scale structural members according to any one of claims 2-4, wherein each roller set comprises a limit roller shaft and a limit roller;
a slotted hole groove is formed in the printing piece fixing and clamping bottom plate; the bottom of the limiting roller shaft is provided with threads, the bottom of the limiting roller shaft passes through a slotted hole groove of the printing piece fixing and clamping bottom plate and is then fastened on the printing piece fixing and clamping bottom plate through a nut, the position of the limiting roller shaft can be adjusted in the slotted hole groove, and the axis of the limiting roller shaft is arranged along the vertical direction; the top of the limiting roller shaft is a polished rod, the middle part of the limiting roller shaft is provided with a shaft shoulder, and the limiting roller is coaxially sleeved in the middle part of the limiting roller shaft through a bearing after penetrating through the polished rod of the limiting roller shaft, and axial limiting is realized through the shaft shoulder; the limiting idler wheel can rotate relative to the limiting idler wheel shaft.
6. An additive manufacturing printing apparatus adapted for in-orbit fabrication of an ultra-long scale structural member space according to any one of claims 2-4, wherein said active rolling element comprises: the device comprises a Z-axis stepping motor, a Z-axis planetary gear reducer, a Z-axis stepping motor support, a Z-axis coupler, four roller rotating supports, two roller central shafts, two active feeding rollers, two Z-axis synchronous wheels and a Z-axis synchronous belt, wherein the Z-axis stepping motor is arranged on the Z-axis planetary gear reducer;
the axes of the two roller center shafts are arranged in parallel along the horizontal direction, and each roller center shaft is respectively arranged on the lower bottom plate of the printing piece extrusion platform through two roller rotating supports; the roller center shafts are rotatable, and each roller center shaft is coaxially locked with an active feeding roller;
a motor shaft of the Z-axis stepping motor is coaxially and fixedly connected with the input end of the Z-axis planetary gear reducer; the Z-axis stepping motor and the Z-axis planetary gear reducer which are fixedly connected are fixed on a side plate of the printing part extrusion platform frame through a Z-axis stepping motor support; the output end of the Z-axis planetary gear reducer is coaxially connected with one end of the central shaft of any roller through a Z-axis coupler;
the other end of each roller center shaft is coaxially provided with a Z-axis synchronizing wheel, a Z-axis synchronizing belt which is matched with the gear tooth specification of the Z-axis synchronizing wheel is arranged between the two Z-axis synchronizing wheels, and synchronous rotation of the two active delivery rollers is realized through the Z-axis synchronizing wheels and the Z-axis synchronizing belt, so that synchronous driving of the two active delivery rollers by one motor is realized.
7. An additive manufacturing printing apparatus adapted for in-orbit fabrication of an ultra-long scale structural member space according to any one of claims 2-4, wherein said print extrusion platform frame comprises: four large-sized plate and printing piece extrusion platform reinforcing plates;
the adjacent large plates are all fastened and connected through bolts to form a rectangular frame, and two ends of the rectangular frame along the Z-axis direction are openings; the bottom surface of the rectangular frame is a lower bottom plate of the printing piece extruding platform, the top surface of the rectangular frame is an upper bottom plate of the printing piece extruding platform, and the two side surfaces of the rectangular frame are respectively a left side plate of the printing piece extruding platform and a right side plate of the printing piece extruding platform; the lower bottom plate of the printing part extrusion platform is fixed on the horizontal bottom plate of the integral frame; the right side plate of the printing part extrusion platform, the left side plate of the printing part extrusion platform and the side surface of the upper bottom plate of the printing part extrusion platform are provided with a plurality of size through holes in the Y-axis direction, so that the upper bottom plate of the printing part extrusion platform can be adjusted in the Y-axis direction; the printing piece extrusion platform reinforcing plate is connected to the two adjacent large-scale plates through bolts.
8. An additive manufacturing printing apparatus adapted for in-orbit fabrication of an ultra-long scale structural member space according to any one of claims 1-4, wherein said horizontal-vertical moving printing platform comprises: a horizontal direction moving mechanism and a vertical direction moving mechanism;
the horizontal direction moving mechanism includes: an X-axis stepping motor, an X-axis coupler and an X-axis screw sliding table; the X-axis screw sliding table is arranged on a vertical backboard of the integral frame, and a sliding block on the X-axis screw sliding table can perform linear motion along the X-axis direction; the X-axis stepping motor is connected with the X-axis screw sliding table through an X-axis coupler and is used for driving a sliding block of the X-axis screw sliding table to move along the X-axis direction; an X-axis positive limit sensor and an X-axis negative limit sensor are respectively arranged at two limit positions of the sliding block movement of the X-axis screw sliding table, namely at the maximum displacement positions of the X-axis positive direction and the negative direction of the sliding block movement;
the vertical direction moving mechanism includes: a Y-axis stepping motor, a Y-axis coupler and a Y-axis screw sliding table; the Y-axis screw sliding table is arranged on a sliding block of the X-axis screw sliding table, and the sliding block on the Y-axis screw sliding table can perform linear motion along the Y-axis direction; the Y-axis stepping motor is connected with the Y-axis screw sliding table through a Y-axis coupler and is used for driving a sliding block of the Y-axis screw sliding table to move along the Y-axis direction; a Y-axis positive limit sensor and a Y-axis negative limit sensor are respectively arranged at two limit positions of the sliding block movement of the Y-axis lead screw sliding table, namely at the maximum displacement positions of the positive direction and the negative direction of the Y-axis of the sliding block movement; the printing head is arranged on the sliding block of the Y-axis screw sliding table.
9. An additive manufacturing printing apparatus adapted for in-orbit fabrication of an ultra-long scale structural member space according to any one of claims 1-4, wherein said printhead comprises: the device comprises a feeding stepping motor, an extruder, an extrusion head, a laser displacement sensor and a printing head-platform connecting piece;
the printing head-platform connecting piece is fixed on the horizontal-vertical movable printing platform, the feeding stepping motor and the extruder are both arranged on the printing head-platform connecting piece, and the feeding stepping motor is connected with the extruder and used for driving the extruder to work; the output end of the extruder is provided with an extrusion head; a laser displacement sensor is mounted on the printhead-platform connection for measuring the distance between the printhead and the printing element.
10. An additive manufacturing printing apparatus adapted for in-orbit fabrication of an ultra-long scale structural member space according to any one of claims 1-4, wherein said unitary frame comprises: an aluminum alloy frame, a horizontal bottom plate, a vertical back plate and an integral frame reinforcing plate;
the aluminum alloy frame is formed by splicing and fixedly connecting aluminum alloy corner pieces, bolts and ship-shaped nuts; the horizontal bottom plate and the vertical back plate are fixedly connected to the aluminum alloy frame through bolts and ship-shaped nuts; the integral frame reinforcing plate is fixedly connected with two side surfaces of the aluminum alloy frame through bolts and ship-shaped nuts.
CN202310408373.1A 2023-04-17 2023-04-17 Additive manufacturing printing device suitable for on-orbit manufacturing of ultra-long scale structural member space Pending CN116690972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310408373.1A CN116690972A (en) 2023-04-17 2023-04-17 Additive manufacturing printing device suitable for on-orbit manufacturing of ultra-long scale structural member space

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310408373.1A CN116690972A (en) 2023-04-17 2023-04-17 Additive manufacturing printing device suitable for on-orbit manufacturing of ultra-long scale structural member space

Publications (1)

Publication Number Publication Date
CN116690972A true CN116690972A (en) 2023-09-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310408373.1A Pending CN116690972A (en) 2023-04-17 2023-04-17 Additive manufacturing printing device suitable for on-orbit manufacturing of ultra-long scale structural member space

Country Status (1)

Country Link
CN (1) CN116690972A (en)

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