CN108160373B - Rod-on-orbit additive manufacturing device - Google Patents

Abstract

The invention discloses an on-orbit additive manufacturing device for a rod piece, which comprises an installation frame and two clamping devices arranged on the installation frame; the two clamping devices are arranged along the vertical direction, and each clamping device comprises a clamping plate assembly for vertically clamping the rod piece; the two first driving devices are respectively used for driving the two clamping devices to move along a first horizontal direction; the two second driving devices are respectively used for driving the two clamping devices to move along a second horizontal direction; the two third driving devices are respectively used for driving the two clamping devices to move along the vertical direction; the first horizontal direction is perpendicular to the second horizontal direction; and the top of the mounting frame is also provided with a spraying device and a spraying driving device, and the spraying driving device is used for driving the spraying device to move in a horizontal plane. The rod on-track additive manufacturing device can realize the manufacturing of truss rods on the space track, particularly the manufacturing of ultra-long rods, and provides conditions for manufacturing truss structures on the space track.

Description

Rod-on-orbit additive manufacturing device

technical field

The invention relates to the technical field of truss manufacturing, in particular to an on-orbit additive manufacturing device for rods.

Background technique

There are a large number of truss structures in orbiting vehicles, which are mainly used for antennas, solar panels, etc.

At present, the launching method of the truss is to design and manufacture a large foldable truss on the ground. After being folded, it is sent to the orbit by a launch vehicle, and is unfolded on the orbit and deformed into a predetermined shape.

This method is limited by the size of the launch vehicle, and it is difficult to achieve the launch of a super-large truss. In addition, the force of the truss in space is very small, and the structural strength can be designed to be small, but in order to withstand the large overload conditions during the rocket launch, the folded truss must have a large strength, resulting in increased structural weight and increased launch. cost. Because the truss needs a large deployment ratio, the structure is often complicated, and failures often occur during deployment, resulting in greater losses.

In addition, the manufacture of trusses on the ground is limited by the working space of the manufacturing equipment, and the size of the workpiece cannot be larger than the size of the equipment, which is not suitable for the manufacture of super-long rods in the truss.

Therefore, how to design a rod-on-orbit additive manufacturing device for manufacturing rods in a truss on a space track to avoid the process of folding and unfolding the truss, so as to avoid the above problems caused by folding, launching, and unfolding the truss, is the present Technical problems that those skilled in the art currently need to solve.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a rod-on-rail additive manufacturing device, comprising a mounting frame and two clamping devices mounted on the mounting frame; the two clamping devices are arranged in a vertical direction, and each The clamping device includes a clamping plate assembly for clamping the rod vertically;

Also includes two sets of first, second and third driving devices, the two first driving devices are respectively used to drive the two clamping devices to move along the first horizontal direction; the two second driving devices are respectively used to drive The two clamping devices move in a second horizontal direction; the two third driving devices are respectively used to drive the two clamping devices to move in a vertical direction; wherein, the first horizontal direction is perpendicular to the second horizontal direction;

A spraying device and a spraying driving device are also installed on the top of the mounting frame, and the spraying driving device is used to drive the spraying device to move in a horizontal plane.

In the rod-on-rail additive manufacturing device provided by the present invention, two clamping devices are arranged on the mounting frame, and each clamping device can be driven by the corresponding driving device along the first horizontal direction and the second horizontal direction. and vertical movement, wherein the first horizontal direction is perpendicular to the second horizontal direction, that is, each clamping device can adjust its spatial position, and at the same time, a spraying device that can move in the horizontal plane is arranged on the top of the mounting frame The device; in this way, after the device is launched into the space orbit, it can realize the on-orbit additive manufacturing of rods on the space orbit, especially the manufacture of ultra-long rods.

Specifically, the relative positions of the two clamping devices are adjusted so that the clamping plate assemblies can correspond in the vertical direction, so as to be able to clamp a vertically placed rod at the same time; the two clamping devices are used to clamp a pre-prepared one. After making a rod with a predetermined length on the basis of the prefabricated rod, release the upper clamping device, move it vertically upward, and then clamp the rod, Loosen the clamping device located below, make it move vertically upward, then clamp the rod, and then continue to manufacture the rod through the spraying device. The rod part is continuously sent out, and the length of the manufactured rod is not limited on the space track, so the manufacture of the super-long rod can be realized.

As above, the rod-on-rail additive manufacturing device can realize the manufacture of truss rods on space rails, especially the manufacture of super-long rods, which provides conditions for manufacturing truss structures on space rails and avoids folding trusses from the ground. , The process of launching the truss and then unfolding the truss can greatly reduce the manufacturing cost and launching cost of the truss.

Optionally, the first drive device includes a first drive source and a first screw rod, and two ends of the first screw rod are respectively inserted into the two brackets;

the first screw rod also passes through the clamping device and is threadedly connected with a nut fixed on the clamping device;

The first driving source can drive the first screw rod to rotate, so as to drive the clamping device to move along the first screw rod, and the first screw rod extends along the first horizontal direction.

Optionally, the first driving device further includes more than one support rod, two ends of the support rod are respectively fixed to the two brackets; the support rod is provided with a ball that can slide along the support rod A sliding block, the ball sliding block is fixedly connected with the clamping device.

Optionally, the first drive source is fixedly connected to the bracket;

The two brackets are respectively fixed with sliding blocks, and the second driving device can drive the sliding blocks to move along the second horizontal direction.

Optionally, the second driving device includes a second driving source and two support platforms located at both ends of the first screw rod, the two support platforms are respectively provided with a second screw rod, and the two second screw rods are are parallel to each other and extend along the second horizontal direction;

The two second screw rods respectively pass through the sliding blocks at the corresponding positions, and are threadedly connected with the nuts fixed on the sliding blocks; the second driving source can drive the two second screw rods to rotate synchronously, to drive the two sliding blocks to move synchronously along the second screw rod; the second screw rod extends along the second horizontal direction.

Optionally, the two supporting platforms are also respectively fixed with guide rails parallel to the second screw rod, and the guide rails are used to guide the movement of the sliding block.

Optionally, the third drive device includes a third drive source and a third screw assembly; the third screw assembly includes four third screw rods;

Wherein, the four third screw rods respectively vertically pass through the two ends of the two supporting platforms of the corresponding second driving device, and are threadedly connected with nuts fixed on the supporting platforms;

The third driving source is used to drive the third screw assembly to rotate synchronously, so as to drive the corresponding second driving device to move vertically.

Optionally, the clamping device includes a clamping platform, and the clamping plate assembly is mounted on the clamping platform; the clamping platform has a through hole through which the rod member passes vertically.

Optionally, the splint assembly includes a fixed splint and a movable splint, the fixed splint is located on one side of the through hole, the movable splint is located on the other side of the through hole, and the movable splint is driven by the splint. Driven by the device, the fixed splint can be approached or moved away.

Optionally, the splint drive device includes a splint drive source and a splint screw connected to a driving end of the splint drive source, the splint screw passes through the movable splint, and is fixed to the movable splint. nut threaded connection.

Description of drawings

FIG. 1 is a schematic axonometric view of a specific embodiment of a rod-on-orbit additive manufacturing device provided by the present invention;

Fig. 2 is a front view of the rod-on-rail additive manufacturing device shown in Fig. 1;

Fig. 3 is the left side view of Fig. 2;

Fig. 4 is the top view of Fig. 2;

FIG. 5 shows a schematic structural diagram of a clamping device and its first, second, and third driving devices of a rod-on-orbit additive manufacturing device in a specific embodiment;

Fig. 6 is the left side view of Fig. 5;

Fig. 7 is the top view of Fig. 5;

FIG. 8 shows a schematic structural diagram of a clamping device and its first and second driving devices of a rod-on-orbit additive manufacturing device in a specific embodiment;

FIG. 9 shows a schematic structural diagram of a part of the structure of the third driving device of the rod-on-orbit additive manufacturing device in the specific embodiment;

10 is a schematic structural diagram of the spraying device of the rod-on-rail additive manufacturing device in FIG. 1;

Fig. 11 is the left side view of Fig. 10;

FIG. 12 is a plan view of FIG. 10 .

Among them, the one-to-one correspondence between the component names and the reference numerals in Figures 1 to 12 is as follows:

Mounting frame 10, upper fixing frame 11, lower fixing frame 12;

Clamping devices 20, 20a, 20b, clamping platform 21, through holes 211, fixed splint 22, movable splint 23, splint drive source 24, splint screw 25;

The first driving device 30, the first driving source 31, the first screw rod 32, the bracket 33, the support rod 34, the ball sliding block 35, the sliding block 36;

The second driving device 40, the second driving source 41, the supporting platform 42, the supporting plate 421, the supporting frame 422, the second screw rod 43, the guide rail 44;

The third driving device 50, the third driving sources 51a, 51b, the third screw rods 52a, 52b;

Spraying device 60 , extruder 61 , extruder motor 62 , heating wire 63 , first spraying drive source 64 , first spraying guide 65 , second spraying drive source 66 , second spraying guide 67 .

Detailed ways

In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer to FIGS. 1 to 4 . FIG. 1 is a schematic axonometric view of a specific embodiment of the rod-on-orbit additive manufacturing device provided by the present invention; FIG. 2 is a front view of the rod-on-orbit additive manufacturing device shown in FIG. 1 . Figure; Figure 3 is a left side view of Figure 2; Figure 4 is a top view of Figure 2.

In this embodiment, the rod-on-rail additive manufacturing device includes a mounting frame 10. The mounting frame 10 has a substantially rectangular frame structure and includes four legs. The tops of the four legs are fixed by four legs, and the middle is also Four struts are fixedly connected, the four struts at the top form a rectangular frame, and the four struts in the middle also form a rectangular frame, and are parallel to the four struts at the top. The mounting bracket 10 is so arranged to facilitate the installation of other structures of the device. In actual setting, the specific structural form of the mounting frame 10 can be adjusted as required.

Two clamping devices 20 arranged in the vertical direction are mounted on the mounting frame 10 , and each clamping device 20 includes a clamping plate assembly for vertically clamping the rod; generally, the two clamping devices 20 are located on the mounting frame 10 within the frame area.

The rod-on-orbit additive manufacturing device also includes two sets of first driving devices 30, second driving devices 40 and third driving devices 50; wherein, the two sets of first driving devices 30 are respectively used to drive the two clamping devices along the first driving device. When moving in a horizontal direction, the two sets of second driving devices 40 are respectively used to drive the two clamping devices to move in the second horizontal direction, and the two sets of third driving devices 50 are respectively used to drive the two clamping devices to move in the vertical direction.

Wherein, the first horizontal direction and the second horizontal direction are perpendicular to each other; it can be understood that the first horizontal direction, the second horizontal direction and the vertical direction constitute a space Cartesian coordinate system, and the first horizontal direction is defined as the x-axis direction, the second horizontal direction The horizontal direction is defined as the y-axis direction, and the vertical direction is the z-axis direction. For the convenience of understanding, the corresponding coordinate systems shown in the drawings are marked in the drawings.

A spraying device 60 and a spraying driving device are also installed on the top of the mounting frame 10, that is, on the rectangular frame at the top, wherein the spraying driving device is used to drive the spraying device to move in a horizontal plane.

Two clamping devices 20 are provided on the mounting frame 10, and each clamping device 20 can move along the x-axis direction, the y-axis direction and the z-axis direction under the driving of the corresponding driving device, that is to say, each The space position of the clamping device 20 can be adjusted, and at the same time, a spraying device 60 that can move in the horizontal plane is arranged on the top of the mounting frame 10; in this way, after the device is launched to the space rail, it can realize the rod on the space rail on-orbit additive manufacturing, especially the manufacture of very long rods.

Specifically, the relative positions of the two clamping devices 20 are adjusted so that their splint assemblies can correspond in the vertical (z-axis) direction, so as to be able to clamp a vertical rod at the same time; use two clamping devices 20 Clamp a pre-prepared short piece of rod, and then adjust the position of the spraying device 60. After manufacturing a rod with a predetermined length on the basis of the pre-fabricated rod, release the upper clamping device 20 and move it vertically upward. Then, clamp the rod again, release the clamping device 20 located below, and make it move vertically upward, then clamp the rod again, and then continue to manufacture the rod by the spraying device 60, and so on and so forth, using two clamps In cooperation with the holding device 20, part of the manufactured rod can be sent out continuously. Since the length of the manufactured rod is not limited on the space track, the manufacture of an ultra-long rod can be realized.

As above, the rod-on-rail additive manufacturing device can realize the manufacture of truss rods on space rails, especially the manufacture of super-long rods, which provides conditions for manufacturing truss structures on space rails and avoids folding trusses from the ground. , The process of launching the truss and then unfolding the truss can greatly reduce the manufacturing cost and launching cost of the truss.

Please refer to FIG. 5 to FIG. 9 together. FIG. 5 shows a schematic structural diagram of a clamping device and its first, second, and third driving devices of a rod-on-rail additive manufacturing device in a specific embodiment; FIG. 6 Fig. 5 is a left side view; Fig. 7 is a top view of Fig. 5; Fig. 8 shows a structural schematic diagram of a clamping device and its first and second driving devices of a rod-on-rail additive manufacturing device in a specific embodiment; FIG. 9 shows a schematic structural diagram of a part of the structure of the third driving device of the rod-on-orbit additive manufacturing device in the specific embodiment.

It should be noted that the structures of the first driving device 30 and the second driving device 40 of the two clamping devices 20 are basically the same, which will be described in a unified manner below, and will not be described separately.

In a specific solution, the first driving device 30 includes a first driving source 31 and a first screw rod 32 , wherein two ends of the first screw rod 32 are respectively inserted into the two brackets 33 .

The first screw rod 32 also passes through the clamping device 20 and is threadedly connected with a nut fixed on the clamping device 20 .

The first driving source 31 can drive the first screw rod 32 to rotate. Because the first screw rod 32 is threadedly connected to the nut fixed on the clamping device 20, the rotation of the first screw rod 32 is converted into The movement along the length direction of the first screw rod 32 , that is, the clamping device 20 can move along the first screw rod 32 under the driving of the first driving source 31 , wherein the first screw rod 32 extends along the x-axis direction.

In a specific solution, the clamping device 20 includes a clamping platform 21 , and other structural components such as the clamping plate assembly of the clamping device 20 are installed on the clamping platform 21 .

In the solution shown in the figure, the clamping platform 21 is generally in a square structure. It can be understood that other shapes can also be set as required in actual setting.

In the illustrated solution, the first driving device 30 is provided with a first lead screw 32, specifically, it passes through the middle of the clamping platform 21 and is threadedly connected with the nut fixed on the clamping platform 21, so that the clamping platform 21 can move smoothly in the x-axis direction.

It can be understood that because the first screw rod 32 needs to be rotated under the driving of the first driving source 31 , both ends of the first screw rod 32 are rotatably plugged into the two brackets 33 .

Specifically, a bearing may be provided between the first screw rod 32 and the bracket 33 to make the rotation of the first screw rod 32 more stable.

Because the clamping platform 21 also needs to be provided with other structural components such as a splint assembly, in order to keep it stable during movement in all directions, the first driving device 30 is also provided with one or more support rods 34 to connect with the first screw rod 32. To achieve the support of the clamping device in coordination, in the solution shown in the figure, two support rods 34 are located on both sides of the first screw rod 32 respectively, and are parallel to the first screw rod 32 .

A ball sliding block 35 is fixed on the clamping platform 21 , the support rod 34 passes through the ball sliding block 35 , and two ends of the support rod 34 are respectively fixed to the two brackets 33 . In the illustrated solution, the four corners of the clamping platform 21 are fixed with ball sliders 35 . It can be understood that the support rods 34 pass through the two ball sliders 35 on the corresponding side. The ball slider 35 can slide along the support rod 34. In this way, when the first drive source 31 drives the first screw rod 32 to rotate to drive the clamping device 20 to move along the x-axis direction, the clamping device 20 can also smoothly move along the x-axis. The support rod 34 slides.

In this solution, the two support rods 34 only play the role of supporting the clamping device 20 and do not play a driving role. The driving of the clamping device 20 in the x-axis direction depends on the thread of the first screw rod 32 and the nut of the clamping device 20 The connection is realized.

It should be understood that, in actual setting, the above-mentioned support rod 34 can also be replaced with a screw rod structure, which is threadedly connected to the clamping platform 21 and driven synchronously by the first driving source 31 .

In a specific solution, the first driving source 31 is a motor disposed at one end of the first screw rod 32, which has a simple structure and reliable operation. Specifically, the end of the first lead screw 32 is connected with the output shaft of the motor through a coupling.

In a specific solution, an installation support can be provided to fix and install the first driving source 31 , and the installation support can be fixedly connected with the bracket 33 on the same side.

The two brackets 33 are respectively fixed with sliding blocks 36 , and the second driving device 40 can drive the sliding blocks 36 to move along the y-axis direction, thereby driving the clamping device 20 to move along the y-axis direction.

In a specific solution, the second drive device 40 includes a second drive source 41 and a support platform 42 located at both ends of the first screw rod; wherein, the two support platforms 42 are respectively provided with a second screw rod 43, and the two second screw rods 43 They are parallel to each other and extend in the y-axis direction.

The two second screw rods 43 respectively pass through the two sliding blocks 36 fixed to the two brackets 33 , and are threadedly connected to the nuts fixed to the sliding blocks 36 . The second driving source 41 can drive the second screw rod 43 to rotate synchronously. Under the cooperation of the second screw rod 43 and the nut of the sliding block 36 , the two sliding blocks 36 are driven to move synchronously along the second screw rod 43 , thereby driving the two brackets 33 And the clamping device 20 supported between the two brackets 33 moves along the y-axis direction.

In the illustrated scheme, the second drive source 41 is two motors connected to the two second screw rods 43 respectively. It can be understood that, in actual setting, the second drive source 41 can also be provided with only one motor, and the two second screw rods can be connected to each other. 43 are connected together by a linkage part, so that one motor can synchronously drive the two second screw rods 43 to rotate.

It can be understood that both the first drive source 31 and the two brackets 33 can move along the second screw rod 42. In order to make the movement more stable, a guide rail 44 parallel to the second screw rod 42 is fixed on each support platform 42. The guide rail 44 is used to guide the movement of the sliding block 36 , that is, the sliding block 36 is slidably matched with the guide rail 44 .

In a specific solution, the support platform 42 includes a support plate 421 and a support frame 422 fixed on both ends of the support plate 421 . Obviously, the aforementioned guide rails 44 are fixed on the support plate 421 .

It should be pointed out that the basic structures of the third driving devices 50 of the two clamping devices 20 are also described together. The two driving devices are matched together. In the following, for the convenience of understanding, the upper clamping device 20 is referred to as the upper clamping device 20a, and the lower clamping device 20 is referred to as the lower clamping device 20b to illustrate the corresponding third Structure of the drive device 50 .

In a specific solution, the third driving device 50 for driving the upper clamping device 20a to move along the z-axis includes a third driving source 51a and a third screw assembly, wherein the third screw assembly includes four third screw rods 52a, The four third screw rods 52a respectively vertically pass through both ends of the two supporting platforms 42 of the second driving device 40 of the upper clamping device 20, and are threadedly connected with the nuts fixed on the two supporting platforms 42, that is, , corresponding to the two ends of the two supporting platforms 42 of the upper clamping device 20, a third screw rod 52a is inserted vertically respectively, so that the third driving source 51a synchronously drives the four third screw rods 52a to rotate. The rod 52a drives the two supporting platforms 42 to move along the z-axis direction under the cooperation of the threaded pair of the corresponding nut, thereby driving the upper clamping device 20a to move along the z-axis direction.

Specifically, the third screw rod 52 a passes through the support frame 422 of the support platform 42 .

Similarly, the third driving device 50 for driving the lower clamping device 20b to move along the z-axis includes a third driving source 51b and a third screw assembly provided with four third screw rods 52b, the four third screw rods 52b are respectively The two ends of the two supporting platforms 42 of the second driving device 40 of the lower clamping device 20 vertically pass through, and are threadedly connected with the nuts fixed on the two supporting platforms 42. In this way, the third driving source 51b synchronously drives four The rotation of the third screw rod 52b drives the two supporting platforms 42 to move in the z-axis direction under the cooperation of the third screw rod 52b and the corresponding nut thread pair, thereby driving the lower clamping device 20b to move in the z-axis direction.

Specifically, four upper fixing frames 11 are fixed on the upper frame of the mounting frame 10 , respectively corresponding to the two ends of the two supporting platforms 42 of a second driving device 40 , and fixed on the lower frame of the mounting frame 10 . The four lower fixing frames 12 correspond to the positions of the four upper fixing frames 11 respectively.

The upper clamping device 20a and the lower clamping device 20b are arranged in the vertical direction. After the third driving device 50 is installed as above, the two supporting platforms 42 corresponding to the same second driving device 40 are provided with a pair of upper clamps at both ends. A third screw rod 52a matched with the holding device 20a and a third screw rod 52b matched with the lower clamping device 20b. Specifically, both ends of the third screw rods 52a and 52b at the same position are inserted into the upper screw rods at the corresponding positions. The fixing frame 11 and the lower fixing frame 12, that is to say, between the upper fixing frame 11 and the lower fixing frame 12 at the corresponding positions, a third screw rod 52a which cooperates with the upper clamping device 20a and a third screw rod 52a which cooperate with the lower clamping device 20a are inserted. The third screw rod 52b matched with the device 20b; in order to make the third screw rods 52a, 52b rotate more smoothly and smoothly, bearings are provided between the third screw rods 52a, 52b and the upper fixing frame 11 and the lower fixing frame 12.

In a specific solution, the third driving source 51a corresponding to the upper clamping device 20a is four motors respectively connected to the four third screw rods 52a. During operation, the four motors run synchronously to drive the four third screws The rod 52a rotates synchronously to ensure the levelness and smoothness of the upper clamping device 20a moving along the z-axis direction; the third driving sources 51b corresponding to the lower clamping device 20b are also four and four third screw rods respectively. 52b connected motor.

It can be understood that, in actual setting, the third driving sources 51a and 52b can also be set to other forms.

In a specific solution, the clamping platform 21 is provided with a through hole 211 for the rod to pass through vertically. In this way, after adjusting the relative positions of the upper and lower clamping devices 20, the clamping devices 20 can be clamped vertically. The same rod, obviously, the rod vertically passes through the through holes 211 of the upper and lower clamping platforms 21 .

The splint assembly installed on the clamping platform 21 includes a fixed splint 22 and a movable splint 23, wherein the fixed splint 22 is located on one side of the through hole 211, the movable splint 23 is located on the other side of the through hole 211, and the movable splint 23 is driven by the splint. The drive frame of the device can be close to or away from the fixed clamping plate 22 to clamp rods of different sizes.

The splint drive device includes a splint drive source 24 and a splint screw 25. Specifically, the splint drive source 24 is a motor, one end of the splint screw 25 is connected to the output end of the motor, and the other end is supported by a bracket fixed on the clamping platform 21. , the splint screw 25 and the output end of the motor can be connected through a coupling, and a bearing can be arranged between the splint and the bracket. The splint screw 25 passes through the movable splint 23 and is threadedly connected with a nut fixed to the movable splint 23 .

Driven by the splint drive source 24, the splint screw 25 rotates, and the movable splint 23 can move along the splint screw 25 under the screwing cooperation with the nut fixed to the movable base plate 23, so as to approach or move away from the fixed splint 22 .

In the solution shown in FIG. 8 , the splint drive source 24 is specifically provided with two motors, which are matched with the movable splint 23 through the two splint screw rods 25 . It can be understood that the number is not limited to this.

Please refer to FIGS. 10 to 12 . FIG. 10 is a schematic structural diagram of the spraying device of the rod-on-rail additive manufacturing device in FIG. 1 ; FIG. 11 is a left side view of FIG. 10 ; FIG. 12 is a top view of FIG. 10 .

In a specific solution, the spraying device 60 installed on the top of the mounting frame 10 includes an extruder 61 and an extruder motor 62, wherein the extruder 61 is provided with an electric heating wire 63, and the electric heating wire 63 can heat the material to melt it. Under the action of the extruder motor 62 , the melted material can be extruded with the extrusion head of the extruder 61 .

Specifically, the spraying device 60 can be moved in a horizontal plane under the driving of the spraying driving device to adjust its position with the clamping device 20, so as to extrude the melted material onto the rod clamped by the clamping device 20, so as to Realize the manufacture of rods.

Wherein, the spraying drive device includes the first spraying drive source 64 and the first spraying guide rail 65, the first spraying guide rail 65 extends along the x-axis direction, and the first spraying guide rail 65 can be a screw rod, which is threadedly connected with the spraying device 60. A spraying drive source 64 can specifically be a motor, which can drive the first spraying guide rail 65 to rotate to drive the spraying device 60 to move along the x-axis direction; the spraying drive device also includes a second spraying drive source 66 and a second spraying guide rail 67, the second spraying The spraying guide rail 67 extends along the y-axis direction, and under the driving of the second spraying drive source 66, the spraying device 60 can move along the second spraying guide rail 67, that is, move along the y-axis direction, so that the position of the spraying device 60 in the horizontal plane can be adjusted .

Other structures of the spraying device 60 can be designed with reference to the prior art, which will not be repeated here.

In practical applications, the above-mentioned rod-on-orbit additive manufacturing device can be launched to the space orbit, and the rod can be directly manufactured in the space orbit by using the device, and the truss can be made from the rod. The process of making rods with this device is as follows:

Adjust the positions of the two sets of clamping devices 20, so that both of them clamp a section of prefabricated rods at the same time;

Adjust the position of the spraying device 60 so that the extrusion head of the extruder 61 corresponds to the position of the rod, and preheat the material to the melting temperature. The extruder 61 sprays the melted material on the rod at a certain speed, and the completion of After one layer is sprayed, the two sets of clamping devices 20 move down the distance of one layer synchronously (consistent with the size of the first layer sprayed above), and repeat the spraying and the downward movement until the two sets of clamping devices 20 move to the bottom of the mounting frame 10. lower limit position;

Loosen the upper clamping device 20a, move it to the corresponding initial position, then clamp the rod, release the lower clamping device 20b, move it to the corresponding initial position, and then clamp the rod;

Repeat the first two steps until the set length of rod is complete.

The rod-on-orbit additive manufacturing device provided by the present invention has been described in detail above. The principles and implementations of the present invention are described herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (10)

1. A rod-on-rail additive manufacturing device, characterized in that it comprises a mounting frame (10) and two clamping devices (20) mounted on the mounting frame (10); the two clamping devices (20) Arranged in the vertical direction, each of the clamping devices (20) includes a clamping plate assembly for clamping the rod vertically; It also includes two sets of first, second and third driving devices, wherein the two first driving devices (30) are respectively used to drive the two clamping devices (20) to move along the first horizontal direction; The driving devices (40) are respectively used to drive the two clamping devices (20) to move in the second horizontal direction; the two third driving devices (50) are respectively used to drive the two clamping devices (20) to move in the vertical direction. moving in a straight direction; wherein, the first horizontal direction is perpendicular to the second horizontal direction; A spraying device (60) and a spraying driving device are also installed on the top of the mounting frame (10), and the spraying driving device is used to drive the spraying device (60) to move in a horizontal plane; The spraying device (60) comprises an extruder (61) provided with an electric heating wire (63) and an extruder motor (62), the electric heating wire (63) is used for melting materials, and the extruder motor is used for melting the material. Under the action of (62), the extruder (61) extrudes the melted material to the clamped prefabricated rod to manufacture the rod. 2 . The on-orbit additive manufacturing device for rods according to claim 1 , wherein the first driving device ( 30 ) comprises a first driving source ( 31 ) and a first lead screw ( 32 ), and the Both ends of the first screw rod (32) are respectively inserted into the two brackets (33); The first screw rod (32) also passes through the clamping device (20) and is threadedly connected with a nut fixed on the clamping device (20); The first driving source (31) can drive the first screw rod (32) to rotate, so as to drive the clamping device (20) to move along the first screw rod (32). (32) extending along the first horizontal direction. 3. The on-orbit additive manufacturing device for rods according to claim 2, wherein the first driving device (30) further comprises one or more support rods (34), wherein the The two ends are respectively fixed to the two brackets (33); the support rod (34) is provided with a ball slider (35) capable of sliding along the support rod (34), and the ball slider (35) It is fixedly connected with the clamping device (20). 4. The on-rail additive manufacturing device for rods according to claim 2, wherein the first driving source (31) is fixedly connected to the bracket (33); The two brackets (33) are respectively fixed with sliding blocks (36), and the second driving device (40) can drive the sliding blocks (36) to move along the second horizontal direction. 5. The on-orbit additive manufacturing device for rods according to claim 4, wherein the second driving device (40) comprises a second driving source (41) and a second driving source (41) located on the first lead screw (32) Two support platforms (42) at both ends, the two support platforms (42) are respectively provided with second screw rods (43), and the two second screw rods (43) are parallel to each other and extend along the second horizontal direction ; The two second screw rods (43) respectively pass through the sliding blocks (36) at corresponding positions, and are threadedly connected with nuts fixed on the sliding blocks (36); the second driving source (41) The two second screw rods (43) can be driven to rotate synchronously, so as to drive the two sliding blocks (36) to move synchronously along the second screw rods (43); the second screw rods (43) move along the The second horizontal direction extends. 6. The rod-on-rail additive manufacturing device according to claim 5, wherein the two support platforms (42) are respectively fixed with guide rails (44) parallel to the second screw rods (43) ), the guide rail (44) is used to guide the movement of the sliding block (36). 7. The on-orbit additive manufacturing device for rods according to claim 5, wherein the third driving device (50) comprises a third driving source and a third screw assembly; the third screw assembly Including four third screw rods; Wherein, the four third screw rods respectively vertically pass through the two ends of the two supporting platforms (42) of the corresponding second driving device (40), and are fixed with the supporting platforms (42). 42) threaded connection of the nut; The third driving source is used to drive the third screw assembly to rotate synchronously, so as to drive the corresponding second driving device (40) to move vertically. 8. The rod-on-rail additive manufacturing device according to any one of claims 1-7, wherein the clamping device (20) comprises a clamping platform (21), and the clamping plate assembly is mounted on the The clamping platform (21) is provided; the clamping platform (21) has a through hole (211) through which the rod member passes vertically. 9. The on-rail additive manufacturing device for rods according to claim 8, wherein the splint assembly comprises a fixed splint (22) and a movable splint (23), and the fixed splint (22) is located in the passageway. One side of the hole (211), the movable splint (23) is located on the other side of the through hole (211), and the movable splint (23) can be close to or away from the fixed plate under the driving of the splint driving device splint (22). 10 . The on-rail additive manufacturing device for rods according to claim 9 , wherein the clamping plate driving device comprises a clamping plate driving source ( 24 ) and a clamping plate connected with a driving end of the clamping plate driving source ( 24 ). 11 . A lead screw (25), the splint lead screw (25) passes through the movable splint (23) and is threadedly connected with a nut fixed on the movable splint (23).

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