CN110125415B - Rod remelting direct-writing forming equipment and rod remelting forming method - Google Patents
Rod remelting direct-writing forming equipment and rod remelting forming method Download PDFInfo
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- CN110125415B CN110125415B CN201910453782.7A CN201910453782A CN110125415B CN 110125415 B CN110125415 B CN 110125415B CN 201910453782 A CN201910453782 A CN 201910453782A CN 110125415 B CN110125415 B CN 110125415B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Abstract
The invention relates to the technical field of additive manufacturing, and discloses bar remelting and direct-writing forming equipment and a bar remelting and forming method, wherein the bar remelting and direct-writing forming equipment comprises a feeding system, a pulping system and a forming system, wherein the feeding system is configured to store bars made of mixed solid particles and provide the bars to the pulping system; the pulping system comprises a pulping material cylinder and an extrusion push rod which can extend into the pulping material cylinder and move and rotate relative to the pulping material cylinder, a heating device is arranged at the bottom of the pulping material cylinder and used for heating the local part of a bar material in the pulping material cylinder to form semi-solid slurry, and the extrusion push rod moves along the axial direction of the pulping material cylinder and presses against the bar material to extrude the semi-solid slurry and form the semi-solid slurry to the forming system. The bar material formed by mixing solid particles is used as a raw material, the semi-solid slurry is formed in a local heating mode, the structure is controllable, the forming equipment is simple in structure and low in cost, and the formed part is uniform in structure. The forming method facilitates effective control of the flow behavior of the semi-solid slurry.
Description
Technical Field
The invention relates to the technical field of additive manufacturing, in particular to bar remelting and direct-writing forming equipment and a bar remelting and forming method.
Background
Additive manufacturing technology is a technology for molding parts by using a bondable material such as powdered or filiform metal or plastic and the like in a layer-by-layer printing mode on the basis of a digital model file. The metal additive manufacturing process based on the high-energy beam generally takes the high-energy beam as a heat source, and the printing equipment has a complex structure and high equipment and material cost; meanwhile, the formed part has larger temperature gradient in the high-energy beam scanning forming process, and is easy to cause defects and larger internal stress to tissues.
Patent No. CN106925783A discloses a high-efficiency metal 3D printing device and method, which combines the preparation process of liquid metal slurry with the additive manufacturing and forming process, and adopts the scheme that metal melt is directly fed and continuously sprayed out in the form of liquid flow, a cooling medium is used for rapid cooling during printing, and the printing process is completed through the movement of a printing head and a forming substrate. However, during the forming process, the direct change of the metal from the liquid state to the solid state generates larger solidification shrinkage, so that the formed part has low dimensional precision, the structure cannot be well controlled, and the formed part generates larger internal stress.
Patent No. CN106623840A discloses an alloy semisolid spinning additive manufacturing device, which combines the process of preparing semisolid slurry and the additive manufacturing forming process, omits slurry transfer and directly realizes the forming process on a forming substrate. The method is characterized in that molten metal is injected into a pulping device, semi-solid slurry is obtained through chilling nucleation, and the slurry is stacked on a forming platform moving according to a preset program layer by layer through a spinning pipe, so that semi-solid spinning additive preparation is realized. Although the method consciously adopts the process of manufacturing nucleation by the spinning tube, the preparation of the semi-solid slurry requires a large amount of uniform nucleation cores, and the heat preservation temperature and the heat preservation time need to be accurately controlled to realize the control of the growth behavior of primary particles, and the high-viscosity semi-solid slurry with controllable flow behavior is difficult to prepare only by the chilling action of the smooth region of the spinning tube.
Based on the problems, the rod remelting direct-writing forming equipment is simple in structure, small in internal stress of a formed part, small in solidification shrinkage and capable of improving the forming quality of the formed part.
Disclosure of Invention
The invention aims to provide bar remelting and direct-writing forming equipment and a bar remelting and forming method, which have the advantages of simple structure, controllable structure of formed semisolid slurry, small internal stress of a formed part, small solidification shrinkage and improvement on the forming quality of the formed part.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides bar remelting direct-writing forming equipment, which comprises a feeding system, a pulping system and a forming system, wherein the feeding system is configured to store bars made of mixed solid particles and provide the bars to the pulping system;
the pulping system comprises a pulping material cylinder and an extrusion push rod which can extend into the pulping material cylinder and move and rotate relative to the pulping material cylinder, wherein the bottom of the pulping material cylinder is provided with a heating device for heating the local part of the bar material in the pulping material cylinder to form semi-solid slurry, and the extrusion push rod moves along the axial direction of the pulping material cylinder and pushes against the bar material to extrude the semi-solid slurry;
the molding system can move relative to the pulping system to mold the semi-solid slurry on the molding system.
The device comprises a feeding system, a heating device, a pulping system and a pushing rod, wherein the feeding system is used for storing a bar material formed by mixed solid particles and providing the bar material for the pulping system, the heating device is used for heating the local part of the bar material to form semi-solid slurry, the pushing rod is extruded to press the unmelted bar material along the circumferential direction of the pulping material cylinder so as to extrude and form the semi-solid slurry onto a forming platform, the device takes the bar material formed by the mixed solid particles as a raw material, the semi-solid slurry is formed in a local heating mode, the organization is controllable, the forming process is cleaner, the forming device is simple in structure, the cost is reduced, the formed part is uniform in structure, the organization defect and the internal stress are reduced, the mechanical property of the formed part is improved, the quality of the formed part is obviously improved, and the forming process is simpler and easier due to the matching of the pulping system and the forming system.
As an optimal selection scheme of above-mentioned rod remelting write-through former, feeding system includes head box, conveyor and storage device, the head box is used for keeping in the rod, conveyor sets up the below of head box is used for with in the head box the rod is carried in the storage device, storage device is configured as with the rod adjustment is along vertical direction setting and output.
Can keep in the rod through the raw materials box, carry storage device through conveyor with the rod in the raw materials box in, set up the rod along vertical direction and export through storage device, the rod of being convenient for enters into slurrying system.
As a preferable scheme of the rod remelting direct writing forming device, the material storage device comprises an inner barrel and an outer barrel which are synchronously rotated, a gap is formed between the inner barrel and the outer barrel, the gap is used for accommodating the rod, a discharge hole is formed in a bottom plate between the inner barrel and the outer barrel, and the rod is output from the discharge hole. The bar materials can be arranged in the vertical direction through the gap between the inner barrel and the outer barrel, and the bar materials are output through the discharge port after the bar materials and the discharge port are aligned through the rotation of the inner barrel and the outer barrel.
As a preferred scheme of the bar remelting direct-writing forming equipment, the bottom of the pulping material cylinder is provided with a printing nozzle, and the printing nozzle is provided with the heating device.
As a preferable scheme of the bar remelting direct-writing forming device, a temperature detection device is arranged at the bottom end of the extrusion push rod and used for detecting the temperature of the bar. The temperature detection device is arranged at the bottom of the extrusion push rod, the bar has the property of heat transfer, and the temperature of the bar is detected by the temperature detection device, so that the temperature of the prepared semi-solid slurry is obtained.
The rod remelting direct-writing forming equipment comprises a driving device and a forming platform, wherein the driving device is connected with the pulping system and drives the pulping system to move along a set route.
As a preferred scheme of the bar remelting direct-writing forming equipment, the driving device is a three-axis mechanical arm, and the free end of the three-axis mechanical arm is connected with the pulping system and drives the pulping system to move in the three-dimensional direction. The free end of the three-axis mechanical arm is connected with the pulping system to drive the pulping system to move along the three-dimensional direction, so that a formed part with a complex figure can be formed.
As a preferable solution of the above bar remelting direct writing molding apparatus, the apparatus further includes a molding auxiliary system, the molding auxiliary system includes a position finding control system and a forging device, the position finding control system is configured to adjust a position of the forging device according to a molding path of the semi-solid slurry, and the forging device is configured to forge the semi-solid slurry. The forming auxiliary system enables the formed part to obtain more compact interlayer combination, and the semi-solid slurry is deposited and formed layer by layer.
As a preferable scheme of the remelting direct-writing forming device for the bar, the bar is formed by mixing and pressing at least two solid particles. Through pressing the bar after mixing at least two kinds of solid particles, can heat the part of bar through this bar remelting write-through former, need not directly operate solid particle, the forming process is cleaner.
The invention provides a bar remelting and forming method, which adopts the bar remelting and direct-writing forming equipment for preparation and comprises the following steps:
s1, adding the bar made of the mixed solid particles into a feeding system;
s2, conveying the bar material in the feeding system to the pulping system, forming semi-solid slurry on part of the bar material by controlling the heating condition of the heating device, and extruding the semi-solid slurry by controlling the extrusion condition of the extrusion push rod;
and S3, forming the semi-solid slurry on the forming system through the relative movement of the forming system and the pulping system.
According to the bar remelting forming method, the heating condition of the heating device is controlled to enable part of the bar to form semi-solid slurry, the extrusion condition of the extrusion push rod is controlled to extrude the semi-solid slurry and form the semi-solid slurry on the forming system, the flowing behavior of the semi-solid slurry is conveniently and effectively controlled, the semi-solid slurry is small in shrinkage amount in the deposition and solidification processes, the forming precision is high, the formed part is uniform in structure, the structure defects and the internal stress are reduced, the mechanical property of the formed part is improved, and the quality of the formed part is remarkably improved.
The invention has the beneficial effects that:
according to the bar remelting direct-writing forming equipment provided by the invention, a bar formed by mixed solid particles is stored through a feeding system and is provided for a pulping system, a heating device heats the local part of the bar to form semi-solid slurry, an extrusion push rod moves along the circumferential direction of a pulping charging barrel and abuts against the non-molten bar to extrude and form the semi-solid slurry onto a forming platform, the equipment takes the bar formed by the mixed solid particles as a raw material, the semi-solid slurry is formed through a local heating mode, the structure is controllable, the forming process is cleaner, the forming equipment is simple in structure, the cost is reduced, the structure of a formed part is uniform, the structure defects and the internal stress are reduced, the mechanical property of the formed part is improved, the quality of the formed part is obviously improved, and the forming process is simpler due to the matching of the pulping system and the forming system.
According to the bar remelting forming method provided by the invention, the heating condition of the heating device is controlled to enable the part of the bar to form the semi-solid slurry, the extrusion condition of the extrusion push rod is controlled to extrude the semi-solid slurry and form the semi-solid slurry on the forming system, so that the flowing behavior of the semi-solid slurry is effectively controlled, the semi-solid slurry has small shrinkage in the deposition and solidification processes, the forming precision is high, the formed part has uniform tissue, the tissue defect and the internal stress are reduced, the mechanical property of the formed part is improved, and the quality of the formed part is obviously improved.
Drawings
FIG. 1 is a schematic structural diagram of a bar remelting direct-writing forming device provided by the invention;
FIG. 2 is a schematic structural view of a storage device of the feeding system provided by the invention;
FIG. 3 is a schematic structural diagram of a pulping system and a forming system of the bar remelting direct-writing forming device provided by the invention;
FIG. 4 is a schematic structural diagram of a forming system of the rod remelting direct-writing forming device provided by the invention.
In the figure:
1. a feed system; 11. a raw material box; 12. a conveying device; 13. a material storage device; 131. an inner barrel; 132. an outer tub; 133. a base plate; 1331. a discharge port;
2. a pulping system; 21. a pulping material cylinder; 211. an end cap; 22. extruding a push rod; 221. a seal ring; 223. a drive section; 23. a printing nozzle; 24. a heating device;
3. a molding system; 31. a drive device; 32. a forming platform;
4. a degassing device;
5. an atmosphere protecting device; 51. sealing the box body; 52. a gas supply device; 53. a purification system; 511. a first transition bin; 512. a second transition bin;
6. a molding assist system; 61. a position-finding control system; 611. a stepping motor; 612. a dual lever mechanism; 6121. a gear; 6122. a connecting rod; 62. a forging device;
100. and (3) a bar material.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The invention provides a bar remelting direct-writing forming device, fig. 1 is a schematic structural diagram of the bar remelting direct-writing forming device provided by the invention, as shown in fig. 1, the bar remelting direct-writing forming device comprises a feeding system 1, a pulping system 2 and a forming system 3, wherein the feeding system 1 is configured to store bars 100 made of mixed solid particles and provide the bars 100 to the pulping system 2 (see fig. 4); the pulping system 2 comprises a pulping cylinder 21 and an extrusion ram 22 which can extend into the pulping cylinder 21 and move and rotate relative to the pulping cylinder 21. The bottom of the pulping material cylinder 21 is provided with a printing nozzle 23, the printing nozzle 23 is provided with a heating device 24 for locally heating the bar 100 to form semi-solid slurry, and the extrusion push rod 22 moves along the axial direction of the pulping material cylinder 21 to press the bar 100 to extrude the semi-solid slurry. The molding system 3 is movable relative to the slurry making system 2 to mold the semi-solid slurry on the molding system 3.
Preferably, the bar 100 is formed by mixing and pressing at least two solid particles, and the bar 100 can be locally heated by the bar remelting direct-writing forming device without directly operating the solid particles, so that the forming process is cleaner. The solid particles may be metal particles or solid particles made of other materials, in this embodiment, the solid particles are preferably metal particles, and the bar 100 is formed by mixing and pressing at least two kinds of metal particles. In the heating process of the bar 100, the bar 100 mixed with solid particles is rapidly melted by utilizing melting point difference to form a solid-liquid two-phase metal melt suspending high-melting-point solid-phase metal particles, namely semi-solid slurry, which is formed by special organization and fluid property of the semi-solid slurry, the semi-solid slurry has a large number of nucleation cores, the formed part has uniform structure, the organization defect and the internal stress are reduced, the mechanical property of the formed part is improved, the quality of the formed part is obviously improved, and meanwhile, the semi-solid slurry has small shrinkage in the deposition and solidification processes and high forming precision.
The bar remelting direct-writing forming equipment further comprises a forming auxiliary system 6, and the forming auxiliary system 6 is arranged on the slurry making system 2 and used for assisting the semi-solid slurry forming. The forming auxiliary system 6 enables the formed part to obtain more compact interlayer combination, and the semi-solid slurry is deposited and formed layer by layer. The forming auxiliary system 6 includes a locating control system 61 and a forging device 62, the locating control system 61 is configured to automatically adjust the position of the forging device 62 according to the forming path of the semi-solid slurry, and the forging device 62 is configured to perform high-frequency forging on the extruded semi-solid slurry before solidification. Specifically, the locating control system 61 includes a stepping motor 611 and a dual-bar mechanism 612, the dual-bar mechanism 612 includes a gear 6121 and a connecting rod 6122, the end of the connecting rod 6122 is connected with a forging device 62, the gear 6121 is driven by the stepping motor 611 to rotate for a certain angle, the gear 6121 drives the connecting rod 6122 to place the forging device 62 at the tail end of the printing path, and after the material is extruded and deposited on the forming platform 32, the forging device 62 performs high-frequency forging on the position to form a compact formed part. Preferably, the forging device 62 includes a high frequency turbine vibrator and a thermally conductive platen.
Specifically, the feeding system 1 includes a raw material box 11, a conveying device 12, and a storing device 13, the raw material box 11 is used for temporarily storing the rod 100, the conveying device 12 is disposed below the raw material box 11 and is used for conveying the rod 100 in the raw material box 11 into the storing device 13, and the storing device 13 is configured to adjust the rod 100 to be disposed in a vertical direction and output. Can keep in rod 100 through former feed box 11, carry storage device 13 with rod 100 in the former feed box 11 through conveyor 12 in, set up and export rod 100 along vertical direction through storage device 13, be convenient for rod 100 enter into slurrying system 2.
Further, a cover plate capable of being opened and closed is arranged at the bottom of the raw material box 11, and the opening and closing of the cover plate are controlled by a control device to output the bar 100 in the raw material box 11.
Fig. 2 is a schematic structural diagram of the stocker of the feeding system according to the present invention, and as shown in fig. 2, the stocker 13 includes an inner barrel 131 and an outer barrel 132 which are synchronously rotated, and a gap is formed between the inner barrel 131 and the outer barrel 132, and the gap is used for accommodating the rod 100 and shaping the direction of the rod 100. The bottom plate 133 between the inner barrel 131 and the outer barrel 132 is provided with a discharge port 1331, and the rod material 100 is discharged from the discharge port 1331. The rod 100 can be arranged in a vertical direction through the gap between the inner and outer drums 131 and 132, and the rod 100 is discharged from the discharge port 1331 into the pulping barrel 21 after the rod 100 is aligned with the discharge port 1331 of the bottom plate 133 by the synchronous rotation of the inner and outer drums 131 and 132. Since the bar 100 is arranged in the vertical direction, the bar 100 enters the pulping cylinder 21 in the vertical direction when being output from the discharge port 1331, and the conveying is convenient.
Fig. 3 is a schematic structural diagram of a slurrying system and a forming system of a bar remelting direct-writing forming device provided by the invention, and fig. 4 is a schematic structural diagram of a forming system of a bar remelting direct-writing forming device provided by the invention, as shown in fig. 3 and fig. 4, a printing nozzle 23 is arranged at the bottom of a slurrying cylinder 21, a heating device 24 is arranged on the printing nozzle 23, preferably, the heating device 24 is high-frequency electromagnetic induction heating, the cost is low, and a heating coil is integrated at the head of the printing nozzle 23. The heating coil is a variable-diameter coil, is designed according to different performances of printing materials, and controls the uniformity of magnetic induction lines passing through materials, so that the influence of a skin effect is reduced. Preferably, the printing nozzle 23 is made of ceramic material, and the diameter of the discharge hole is 0.5mm-2mm, and the printing nozzle is replaced according to the precision requirement of the workpiece. The print nozzle 23 is arranged to shape the output of the semi-solid slurry. Preferably, different shapes of semi-solid slurry are extruded by installing different shapes of printing nozzles 23 at the bottom of the slurry cylinder 21.
The top cover of the pulping material cylinder 21 is provided with an end cover 211, when feeding, the end cover 211 is taken down, the bar 100 is placed into the pulping material cylinder 21 through a feeding port at the top of the pulping material cylinder 21, and after feeding is finished, the end cover 211 is sealed at the feeding port. The end cover 211 is arranged to seal the pulping cylinder 21 and facilitate the addition of the bar 100.
The bar remelting direct-writing forming equipment also comprises a degassing device 4, wherein the degassing device 4 is communicated with the pulping material cylinder 21 and is used for removing gas in the pulping material cylinder 21. The degassing device 4 is arranged to form a negative pressure environment in the pulping material cylinder 21 and prevent the semi-solid pulp from reacting with the environment. Preferably, the degassing device 4 is connected to the end cover 211 of the pulping cylinder 21 through a pipeline and is communicated with the inside of the pulping cylinder 21, in the embodiment, the degassing device 4 is a vacuum pump, and the inside of the pulping cylinder 21 forms a negative pressure environment by pumping air into the pulping cylinder 21.
The top end of the extrusion ram 22 is provided with a driving part 223 for driving the extrusion ram 22 to move in the axial direction of the pulp cylinder 21. Further, the bottom end of the extrusion push rod 22 is provided with a sealing ring 221 with an exhaust hole, and the sealing ring 221 divides the pulping cylinder 21 into two cavities. The sealing ring 221 is abutted against the inside of the pulping material cylinder 21, and the upper and lower cavities of the sealing ring 221 of the extrusion push rod 22 can be pumped into negative pressure environments through the degassing device 4.
The bottom end of the extrusion ram 22 is provided with a temperature detection device for detecting the temperature of the rod 100. The temperature detection device is arranged at the bottom of the extrusion push rod 22, the bar 100 has the property of heat transfer, and the temperature of the bar 100 is detected by the temperature detection device, so that the temperature of the prepared semi-solid slurry is obtained. Specifically, the temperature detection device includes a temperature controller and a temperature sensor. The temperature sensor probe is flat and integrated at the bottom end of the extrusion push rod 22. By monitoring the temperature of the bar 100, the temperature data is uploaded to the central controller, and the current of the magnetic induction heating device 24 is adjusted, so that the temperature is adjusted.
The extrusion ram 22 is provided with a pressure detection device for detecting the pressure of the extrusion ram 22. Preferably, the pressure detecting device is a pressure sensor, and the pressure of the extruding push rod 22 is detected by the pressure sensor, so as to reflect the viscosity state of the semi-solid slurry in the pulping cylinder 21, thereby feedback-adjusting the heating condition of the heating device 24, so that the viscosity state of the semi-solid slurry is controllable, and finally the extrusion of the semi-solid slurry is realized.
As shown in fig. 3, the forming system 3 includes a driving device 31 and a forming platform 32, the driving device 31 is connected to the slurrying system 2 and drives the slurrying system 2 to move along a set route to form the semi-solid slurry on the forming platform 32, the device is high in safety, and complexity and forming quality of the formed part are achieved.
Preferably, the forming platform 32 is provided with a heating component, which can heat the forming platform 32, so that the formed part formed on the forming platform 32 can obtain a more compact structure, the interlayer bonding strength of the formed part is greatly improved, and the performance of the formed part is remarkably improved. The structure and heating mode of the heating component belong to the prior art, and are not described herein again.
Preferably, the driving device 31 is a three-axis mechanical arm, and a free end of the three-axis mechanical arm is connected to the pulping system 2 and drives the pulping system 2 to move along a three-dimensional direction. The free end of the three-axis mechanical arm is connected with the pulping system 2 to drive the pulping system 2 to move along the three-dimensional direction, so that the forming freedom degree is improved, and the complexity and the forming quality of a formable part are greatly improved.
Preferably, the bar remelting and direct-writing forming equipment further comprises an atmosphere protection device 5, the atmosphere protection device 5 comprises a closed box body 51, a gas supply device 52 and a purification device, and the pulping system 2 and the forming system 3 are both arranged in the closed box body 51. The first transition bin 511 and the second transition bin 512 are arranged outside the closed box body 51, the first transition bin 511 is arranged at the upper part of the closed box body 51 and used for adding the bar material 100, and the second transition bin 512 is arranged at the lower part of the closed box body 51 and used for taking out the formed part printed and formed on the forming platform 32. The volume of the second transition bin 512 is smaller than that of the first transition bin 511, and the second transition bin 512 is smaller in volume, so that the atmosphere in the closed box body 51 can be maintained and the service life of the purification system 53 can be prolonged when the formed part is taken out every time.
The gas supply device 52 communicates with the hermetic container 51 and supplies the hermetic container 51 with a shielding gas, and specifically, the gas supply device 52 supplies the hermetic container 51 with an inert gas. The purge system 53 is in communication with the enclosure 51, and is configured to cyclically purge the gas in the enclosure 51. This atmosphere protection device 5 can seal the forming process, provides inert gas in to the seal box through gas supply arrangement 52, protects the forming process, and clean system 53's setting realizes the gas circulation purification in the seal box 51, improves the cleanliness factor in the seal box 51, and then guarantees the shaping quality of formed part.
The invention also provides a bar remelting and forming method, which adopts the bar remelting and direct-writing forming equipment for preparation and comprises the following steps:
s1, adding the bar 100 made of mixed solid particles into the feeding system 1.
The bar 100 made of mixed solid particles is added into the raw material box 11 of the feeding system 1, the output of the bar 100 is controlled by the control device of the raw material box 11, the conveying device 12 rotates, and the bar 100 is conveyed to the storing device 13 to be used. The purification system 53 is turned on to perform a circulating purification treatment of the gas in the sealed box 51, and the gas supply device 52 is turned on to introduce an inert gas into the entire work system and the sealed box 51, thereby assisting the gas circulating treatment by the purification system 53.
S2, the bar material 100 in the feeding system 1 is fed into the pulping system 2, the heating condition of the heating device 24 is controlled to form the semi-solid slurry on the part of the bar material 100, and the extrusion condition of the extrusion push rod 22 is controlled to extrude the semi-solid slurry.
When the drive device 31 moves the pulping system 2 to the discharging position of the feeding system 1, the sealed end cover 211 is opened, the inner barrel 131 and the outer barrel 132 of the storage device 13 synchronously rotate, after the bar material 100 is aligned with the discharging port 1331 on the bottom plate 133, the bar material 100 is output from the discharging port 1331 and enters the pulping barrel 21 of the pulping system 2, the end cover 211 is sealed, the heating device 24 and the degassing device 4 start to work, when the temperature detected by the temperature sensor reaches the preset temperature, the extrusion push rod 22 starts to work, the extrusion push rod 22 moves along the axis of the pulping barrel 21 and rotates around the axis, and the semi-solid pulp reaching the proper rheological property is extruded. The heating temperature and the heating time are controlled by the heating device 24 so as to effectively control the fluidity of the semi-solid slurry. The pressure of the extrusion push rod 22 is detected by the pressure detection device, so that the viscosity state of the semi-solid slurry in the pulping material cylinder 21 is reflected, the heating condition of the heating device 24 can be fed back and adjusted, the viscosity state of the semi-solid slurry is controllable, and the viscosity state of the semi-solid slurry meets the extrusion condition.
And S3, forming the semi-solid slurry on the forming system 3 through the relative movement of the forming system 3 and the pulping system 2.
After the bar 100 is heated to a proper temperature, the extrusion push rod 22 and the driving device 31 start to work, deposition molding starts on the molding platform 32 preheated to a certain temperature, the molding auxiliary system 6 starts to work in the molding process, and the forging device 62 starts to forge the semi-solid slurry while extruding the semi-solid slurry until printing is finished. The forming auxiliary system 6 can enable the formed part to obtain a more compact structure, greatly improve the interlayer bonding strength of the formed part, and obviously improve the performance of the formed part.
During the extrusion of the semi-solid slurry, the slurry making system 2 is driven by the driving device 31 to move along a set route to form the semi-solid slurry on the forming platform 32.
Upon completion of printing by molding system 3, and returning to zero, heating device 24 is deactivated and extrusion ram 22 extrudes residual melt from the scrap region of molding platform 32. After the system is reset, the formed part can be taken out through the second transition bin 512 of the closed box body 51.
According to the bar remelting forming method, the heating condition of the heating device 24 is controlled to enable the local heating of the bar 100 to form semi-solid slurry, the extrusion condition of the extrusion push rod 22 is controlled to extrude the semi-solid slurry, the driving device 31 drives the pulping system 2 to move along a set route, so that the semi-solid slurry is formed on the forming platform 32, the flowability of the semi-solid slurry is effectively controlled, the semi-solid slurry is small in shrinkage amount in the deposition and solidification processes, the forming precision is high, the formed part is uniform in structure, the tissue defects and the internal stress are reduced, the mechanical property of the formed part is improved, and the quality of the formed part is remarkably improved. Through the relative motion of pulping system 2 and triaxial arm, improved the shaping degree of freedom, improved the complexity and the shaping quality of formed part greatly.
In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are based on the orientations and positional relationships shown in the drawings and are used for convenience in description and simplicity in operation, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be constructed in a particular operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A rod remelting direct-write forming apparatus, comprising a feed system (1), a pulping system (2) and a forming system (3), the feed system (1) being configured to store a rod (100) made of mixed solid particles and to provide the rod (100) to the pulping system (2);
the pulping system (2) comprises a pulping material cylinder (21) and an extrusion push rod (22) which can extend into the pulping material cylinder (21) and move and rotate relative to the pulping material cylinder (21), a heating device (24) is arranged at the bottom of the pulping material cylinder (21) and is used for heating the local part of the bar material (100) in the pulping material cylinder (21) to form semi-solid slurry, and the extrusion push rod (22) moves along the axial direction of the pulping material cylinder (21) and presses against the bar material (100) to extrude the semi-solid slurry;
the forming system (3) can move relative to the pulping system (2) to form the semi-solid slurry on the forming system (3);
the bar remelting direct-writing forming device further comprises a forming auxiliary system (6), wherein the forming auxiliary system (6) comprises a positioning control system (61) and a forging device (62), the positioning control system (61) is configured to adjust the position of the forging device (62) according to the forming path of the semi-solid slurry, and the forging device (62) is configured to forge the semi-solid slurry;
one end of the locating control system (61) is connected with the pulping system (2), the other end of the locating control system is connected with the forging device (62), and the forging device (62) is arranged outside the pulping system (2).
2. The rod remelting direct-writing forming apparatus according to claim 1, wherein the feeding system (1) comprises a raw material box (11), a conveying device (12), and a storing device (13), the raw material box (11) is used for temporarily storing the rods (100), the conveying device (12) is arranged below the raw material box (11) and is used for conveying the rods (100) in the raw material box (11) into the storing device (13), and the storing device (13) is configured to adjust the rods (100) to be arranged in a vertical direction and output.
3. The rod material remelting and direct-writing forming device according to claim 2, wherein the storing device (13) comprises an inner barrel (131) and an outer barrel (132) which are synchronously arranged in a rotating manner, a gap is formed between the inner barrel (131) and the outer barrel (132) and is used for accommodating the rod material (100), a discharge hole (1331) is formed in a bottom plate (133) between the inner barrel (131) and the outer barrel (132), and the rod material (100) is output from the discharge hole (1331).
4. The rod remelting direct-writing forming apparatus according to claim 1, wherein a printing nozzle (23) is arranged at the bottom of the pulping cylinder (21), and the heating device (24) is arranged on the printing nozzle (23).
5. The rod remelting direct-writing forming apparatus according to claim 1, wherein a temperature detecting device is provided at the bottom end of the extrusion push rod (22) for detecting the temperature of the rod (100).
6. The rod remelting direct-writing forming apparatus according to claim 1, wherein the forming system (3) comprises a driving device (31) and a forming platform (32), and the driving device (31) is connected with the pulping system (2) and drives the pulping system (2) to move along a set route.
7. The rod remelting direct-writing forming apparatus according to claim 6, wherein the driving device (31) is a three-axis mechanical arm, and a free end of the three-axis mechanical arm is connected to the pulping system (2) and drives the pulping system (2) to move in a three-dimensional direction.
8. The apparatus according to claim 1, wherein the rod (100) is formed by mixing at least two solid particles and pressing the mixture.
9. A rod remelting forming method characterized by being produced by the rod remelting direct-writing forming apparatus according to any one of claims 1 to 8, comprising the steps of:
s1, adding the bar (100) made of the mixed solid particles into the feeding system (1);
s2, conveying the bar material (100) in the feeding system (1) into the pulping system (2), forming a semi-solid slurry on the local part of the bar material (100) by controlling the heating condition of the heating device (24), and extruding the semi-solid slurry by controlling the extrusion condition of the extrusion push rod (22);
s3, forming the semi-solid slurry on the forming system (3) through the relative movement of the forming system (3) and the pulping system (2).
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| CN201910453782.7A CN110125415B (en) | 2019-05-28 | 2019-05-28 | Rod remelting direct-writing forming equipment and rod remelting forming method |
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| CN110125415B true CN110125415B (en) | 2022-02-18 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106591824A (en) * | 2015-10-15 | 2017-04-26 | 中国航空工业集团公司北京航空制造工程研究所 | Manufacturing machine and method of titanium alloy parts |
| CN106965421A (en) * | 2017-04-29 | 2017-07-21 | 梁福鹏 | A kind of 3 D-printing method |
| CN107138733A (en) * | 2017-07-10 | 2017-09-08 | 山东科技大学 | Ultrasonic vibration atomization prepares device, method and the 3D printing system of metal dust |
| CN107414076A (en) * | 2016-11-26 | 2017-12-01 | 梁福鹏 | A kind of fused raw material generation method and its equipment for 3 D-printing |
| CN109128681A (en) * | 2018-09-26 | 2019-01-04 | 刘军发 | A kind of electrode induction melting increasing material manufacturing apparatus and method for |
| CN109201982A (en) * | 2017-09-29 | 2019-01-15 | 中国航空制造技术研究院 | A kind of forming device and manufacturing process based on vacuum induction heating |
-
2019
- 2019-05-28 CN CN201910453782.7A patent/CN110125415B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106591824A (en) * | 2015-10-15 | 2017-04-26 | 中国航空工业集团公司北京航空制造工程研究所 | Manufacturing machine and method of titanium alloy parts |
| CN107414076A (en) * | 2016-11-26 | 2017-12-01 | 梁福鹏 | A kind of fused raw material generation method and its equipment for 3 D-printing |
| CN106965421A (en) * | 2017-04-29 | 2017-07-21 | 梁福鹏 | A kind of 3 D-printing method |
| CN107138733A (en) * | 2017-07-10 | 2017-09-08 | 山东科技大学 | Ultrasonic vibration atomization prepares device, method and the 3D printing system of metal dust |
| CN109201982A (en) * | 2017-09-29 | 2019-01-15 | 中国航空制造技术研究院 | A kind of forming device and manufacturing process based on vacuum induction heating |
| CN109128681A (en) * | 2018-09-26 | 2019-01-04 | 刘军发 | A kind of electrode induction melting increasing material manufacturing apparatus and method for |
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