CN113231637A - 3D forming repair device and forming repair method - Google Patents

Abstract

Translated fromChinese

本发明提供一种3D成型修复装置及成型修复方法，包括成型模块、修复模块、控制模块和工作模块，所述工作模块包括密封外壳和铺粉模块，所述铺粉模块设置于所述密封外壳内，铺粉模块用于对待成型构件进行下料，成型模块对粉料进行烧结成型，修复模块协同修复烧结成型的构件，对其组织存在缺陷处进行熔融或塑性处理从而实现对构件的缺陷部位进行精准的修复，通过激光器烧结熔融成型构件，使得制造成本降低，且其激光器可通过实时建模，调整模型大小减小模型与实际尺寸的误差，从而使得生产的构件达到精度极高程度，而控制模块统筹控制成型模块、修复模块和铺粉模块进行依次工作，而无需进行检测即可进行修复，节省了构件成型步骤。

The present invention provides a 3D molding repairing device and a molding repairing method, comprising a molding module, a repairing module, a control module and a working module, wherein the working module includes a sealing shell and a powder spreading module, and the powder spreading module is arranged in the sealing shell Inside, the powder spreading module is used to unload the component to be formed, the forming module sinters the powder, and the repair module cooperates to repair the sintered component, and melts or plasticizes the defective part of the structure to realize the defect of the component. Perform accurate repairs, sintering and melting the molded components by laser, which reduces the manufacturing cost, and the laser can adjust the size of the model through real-time modeling to reduce the error between the model and the actual size, so that the produced components can reach a very high degree of accuracy, while The control module overall controls the forming module, the repairing module and the powder spreading module to work in sequence, and the repairing can be carried out without detection, thus saving the component forming steps.

Description

3D forming repair device and forming repair method

Technical Field

The invention relates to the technical field of machine manufacturing, in particular to a 3D forming device and a forming method.

Background

The laser sintering molding technology is a layered processing manufacturing technology, a three-dimensional model is formed through computer modeling, then the three-dimensional model is sliced through model slicing software to form a whole set of slices, each slice accurately describes different sections of the model, and the slices are stacked layer by layer through high-energy laser emitted by a laser, so that a complex three-dimensional entity is obtained.

For example, the patent with the application number of '202011576589.1' discloses a 3D printing composite processing method, which adopts laser sintering molding, scans the internal situation of a molded entity through an image recognition component after integral molding, compares the internal situation obtained through scanning with a preset shape, identifies a defect part, grabs the entity through a manipulator, and removes redundant parts by milling, and only can repair the size of the entity but cannot repair the internal defects such as bubbles and cracks, and then probes the inside of the defect part by means of the influence recognition component when the defect part is obtained, so that the step increases the entity molding step, thereby prolonging the working progress.

Disclosure of Invention

Based on this, an object of the present invention is to provide a 3D molding repair apparatus and a molding repair method, so as to save the step of solid molding and achieve self-repair of internal defects of solid tissues without prior calibration.

The invention aims to provide a 3D forming repair device which comprises a forming module, a repair module, a control module and a working module, wherein the working module is used for preparing materials required by a component and comprises a sealing shell and a powder paving module, the powder paving module is used for paving powder forming the cross section of a single-layer component, the powder paving module is arranged in the sealing shell and comprises a workbench, a powder storage cavity, a forming cavity and a powder recovery cavity are sequentially arranged in the workbench, lifting platforms are arranged in the powder storage cavity and the forming cavity, the workbench further comprises a scraper and a driving assembly, and the driving assembly drives the scraper to reciprocate above the powder storage cavity, the forming cavity and the powder recovery cavity.

The forming module comprises a laser and a vibrating mirror, the laser deflection angle of the laser is changed through the vibrating mirror, so that the forming of powder in different areas of the forming cavity is realized, after one layer is finished, the lifting platform in the forming cavity is lowered by one thickness, then the sintering of the next layer is carried out, and further the required three-dimensional component is formed by continuous stacking.

The repair module comprises a mechanical arm, an electrode pen and a guide plate, the electrode pen is fixed on the mechanical arm, the guide plate is arranged on the lifting platform, when the electrode pen is close to one of the conical conductors, the electrode pen, the guide plate and the forming component form a loop, and the defect part with the component is repaired.

The control module comprises a first control module, a second control module and a third control module, the first control module is used for controlling the lifting of the lifting platform, the second control module is used for controlling the laser, and the third control module is used for controlling the mechanical movement of the mechanical arm.

Compared with the prior art, the invention has the beneficial effects that: sintering and melting a single-layer component through a laser, continuously stacking to form an integral three-dimensional component, reducing the manufacturing cost due to the introduction of the laser, adjusting the size of a model by real-time modeling, and reducing the error between the model and the actual size, so that the produced three-dimensional component reaches a high degree of precision, then controlling a mechanical arm through a set repair module, so that the mechanical arm is close to the formed single-layer component, wherein after an electrode pen is contacted with the component, a guide plate, the component and the electrode pen form a passage, current flows through a defective part of the component, such as an air hole, a crack or an unfused part, because the resistance of the defective part is far greater than that of a normal part, the resistance heat generated when the current flows through the defective part is also far higher than that of the normal part, the defective part carries out in-situ self-heating under the resistance heat to a repairable state, namely, because the in-situ self-heating temperature of metal under the resistance heat exceeds 40 percent of the melting point of the metal, the metal is in a liquid state, and when the temperature is controlled to be close to the melting point of the metal, the metal is in a repairable state, namely the metal has certain plasticity without changing the structure of the metal, so that the repair of the defects of the member, such as air holes, cracks and unfused parts, by laser forming is realized, meanwhile, the defects of the laser forming can be self-repaired by resistance in-situ self-heating, meanwhile, as the current always flows through the formed area, continuous resistance heat can be generated in the formed area, heat lost by heat conduction and heat radiation can be offset by heat accumulation, the workpiece can keep a proper forming temperature in the whole forming process, and the integral microstructure of the workpiece can be optimized; in addition, the heat accumulation effect is equivalent to heat treatment, and the internal stress of the component is effectively eliminated; therefore, the defects of the component can be directly repaired without on-line detection by adding in-situ resistance heat, the steps of solid forming are effectively reduced, the printing progress of the component is accelerated, and meanwhile, the integral microstructure of the component can be optimized and the internal stress can be eliminated due to heat accumulation of the resistance heat.

Further, drive assembly includes that two are on a parallel with workstation length direction and the continuous two-way threaded rod of tip, the both ends of scraper are equipped with the screw hole respectively, threaded connection is in parallel arrangement and the continuous two of tip respectively at the both ends of scraper on the two-way threaded rod, drive assembly still includes synchronous machine, two the input of two-way threaded rod with synchronous machine's output is connected, and the direction of motion that need not to change synchronous machine when synchronous machine drives two-way threaded rod and rotates through the two-way threaded rod that sets up can change the scraper.

Further, the cutting edge of the scraper is arranged at intervals with the tops of the powder storage cavity, the forming cavity and the powder recovery cavity.

Further, the electrode pen comprises a pen holder and a ball, the mechanical arm clamps the pen holder, and the electrode pen is made of one of chromium-zirconium-copper, beryllium-nickel-copper and beryllium-cobalt-copper.

Further, the repair module further comprises a rubber pad, and the rubber pad is arranged between the guide plate and the contact surface of the lifting platform.

Furthermore, a plurality of conical conductors are arranged in the conductors and are electrically connected.

Further, be equipped with air inlet and gas outlet in the seal shell, the air inlet with the gas outlet is located respectively the seal shell both sides, the protective gas by the air inlet gets into the seal shell, by the gas outlet flows, specifically, the protective gas is inert gas.

Another object of the present invention is to provide a 3D molding repair method, which is applied to a 3D molding repair apparatus, and the method includes: preparation of a model, preparation of powder, molding of a component, repair of the component and completion of the component.

Preparation of a model: modeling a component to be molded through a computer, layering the model in sequence by using software to obtain the section of each layer of three-dimensional model, forming an stp format file, and storing the stp format file into the computer.

Preparation of powder: the lifting platform in the powder storage cavity is controlled to rise by the first control module, the powder pile above the lifting platform is pushed to the outside of the powder storage cavity, a certain height difference is formed between the descending of the lifting platform of the forming cavity and the top of the forming cavity, the synchronous motor is controlled to rotate by the first control module, the bidirectional threaded rod is driven to rotate, the scraper is driven to horizontally move, and powder in the powder storage cavity is flatly paved on the guide plate of the forming cavity.

And (3) forming of the member: and processing the stp file by the computer, controlling the second control module by the computer, controlling the laser by the second control module, setting working parameters of the laser, and sintering and molding the powder in the molding cavity to form the single-layer three-dimensional component.

And (3) repairing the component: and the third control module controls the mechanical arm so as to control the electrode pen to be close to and contact with the outer surface of the formed single-layer component, the tip of the electrode pen forms a passage with the guide plate and the single-layer component part, and the defective part of the component is repaired.

And (3) finishing the components: and repeating the forming step of the component and the repairing step of the component until the component is finished.

Further, the single lifting height of the lifting platform is 0.1-3 mm.

Further, the output power of the laser is 500-.

Furthermore, the voltage between the electrode pen and the conical conductor is 5-10V, the current is 1-3000A, the pressure is 1-500N, and the welding speed is 0.1-50 mm/s.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a 3D molding repair device according to the present invention;

FIG. 2 is a schematic cross-sectional view of a stage of the 3D molding repair apparatus according to the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

in the figure: 10. forming a module; 20. a repair module; 30. a control module; 40. a working module; 50. an air inlet; 60. an air outlet; 70. a member;

11. a laser; 12. a galvanometer;

21. a mechanical arm; 22. an electrode pen; 23. a guide plate; 231. a tapered conductor;

41. sealing the housing; 42. a work table; 421. a powder storage cavity; 422. a molding cavity; 423. a powder recovery chamber; 424. a lifting platform; 425. a scraper; 426. a drive assembly; 427. a bidirectional threaded rod; 428. a synchronous machine.

Detailed Description

In order to facilitate a better understanding of the invention, the invention will be further explained below with reference to the accompanying drawings of embodiments. Embodiments of the present invention are shown in the drawings, but the present invention is not limited to the preferred embodiments described above. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1-3, a 3D forming repair device according to a first embodiment of the present invention includes a forming module 10, arepair module 20, acontrol module 30, and a workingmodule 40, where the workingmodule 40 is used to prepare a material required by acomponent 70, and includes a sealed housing 41 and a powder spreading module, the powder spreading module is used to lay powder forming a single-layer cross section of thecomponent 70, the powder spreading module is disposed in the sealed housing 41, the powder spreading module is used to perform blanking on thecomponent 70 to be formed, the forming module 10 performs sintering forming on the powder, therepair module 20 cooperatively repairs the sintering-formedcomponent 70, heats a defective tissue of the component to a repairable state, that is, since a temperature of in-situ self-heating of metal under resistance heat exceeds 40% of a melting point of the metal, the metal is in a liquid state, and when the temperature is controlled to be close to the melting point, the repairable state of the metal is obtained, i.e. it has a certain plasticity without changing its structure, and thecontrol module 30 orchestrates the control of the forming module 10, therepair module 20 and the dusting module to work in sequence.

Further, the powder paving module comprises aworkbench 42, apowder storage cavity 421, amolding cavity 422 and apowder recovery cavity 423 are sequentially arranged in theworkbench 42, liftingplatforms 424 are arranged in thepowder storage cavity 421 and themolding cavity 422, theworkbench 42 further comprises ascraper 425 and adriving component 426, thescraper 425 is positioned above thepowder storage cavity 421, themolding cavity 422 and thepowder recovery cavity 423, thedriving component 426 drives thescraper 425 to reciprocate above thepowder storage cavity 421, themolding cavity 422 and thepowder recovery cavity 423, after thelifting platforms 424 in thepowder storage cavity 421 are lifted for 1.2 thicknesses, powder in thepowder storage cavity 421 is pushed out of thepowder storage cavity 421 by the liftingplatforms 424, thescraper 425 is driven by thedriving component 426 to move horizontally to bring the powder outside thepowder storage cavity 421 into themolding cavity 422, and the powder is spread on theguide plate 23 along with the movement of thescraper 425, and the surplus powder is scraped into thepowder recovery chamber 423 by thescraper 425, so that the powder in thepowder recovery chamber 423 can be reused.

Further, the drivingassembly 426 includes two continuous bidirectional threadedrods 427 parallel to the length direction of the working table 42, two ends of thescraper 425 are respectively provided with a threaded hole, two ends of thescraper 425 are respectively in threaded connection with the two continuous bidirectional threadedrods 427 arranged in parallel and having continuous ends, the drivingassembly 426 further includes asynchronous motor 428, input ends of the two continuous threadedrods 427 are connected with an output end of thesynchronous motor 428, thesynchronous motor 428 drives the bidirectional threadedrods 427 to rotate through the continuous bidirectional threadedrods 427 arranged at the ends, and when the scraper is located at the end of the bidirectional threadedrod 427, thescraper 425 is guided to move reversely through the continuous bidirectional threads arranged at the end, so that the moving direction of thescraper 425 can be changed without changing the rotating direction of thesynchronous motor 428.

Further, the cutting edge of thescraper 425 and the tops of thepowder storage cavity 421, themolding cavity 422 and thepowder recovery cavity 423 are arranged at intervals, and the cutting edge of thescraper 425 is prevented from being blocked by larger particles at the tops of thepowder storage cavity 421, themolding cavity 422 and thepowder recovery cavity 423 through thescraper 425 arranged above thepowder storage cavity 421, themolding cavity 422 and thepowder recovery cavity 423 at intervals, so that abnormality is further caused.

Further, when thescraper 425 works, the control module controls 30 to control thelifting platform 424 in thepowder storage cavity 421 to rise by 1.2 thicknesses, correspondingly, thelifting platform 424 in themolding cavity 422 descends by one thickness, then thesynchronous motor 428 drives the bidirectional threadedrod 427 to rotate to drive thescraper 425 to move horizontally, the powder pile above thepowder storage cavity 421 is pushed to theguide plate 23 in themolding cavity 422 and is paved, since the molded powder is fine powder, when thescraper 425 scrapes the powder pile, a flat surface is formed, and the surplus powder is pushed into thepowder recovery cavity 423, when thescraper 425 moves to the end of the bidirectional threadedrod 427, the bidirectional threadedrod 427 continues to rotate to drive the scraper to the initial position, and after the laser sintering of thelayer 425 is completed, the powder paving module repeats the steps.

Further, the molding module 10 includes a laser 11 and a vibratingmirror 12, the vibratingmirror 12 changes the laser deflection angle of the laser 11 to realize powder molding of different areas of themolding cavity 422, after one layer is completed, the lifting table 424 in themolding cavity 422 descends by a thickness, and then the next layer is sintered, and further the required three-dimensional members 70 are formed by continuous stacking.

Further, therepair module 20 includes a robot arm 21, anelectrode pen 22 and aguide plate 23, theelectrode pen 22 is fixed on the robot arm 21, theguide plate 23 is disposed on the elevatingplatform 424, when theelectrode pen 22 is close to one of theconical conductors 231, theelectrode pen 22, theguide plate 23 and the moldedmember 70 form a loop, and the defective portion of themember 70 is repaired.

Therepair module 20 further includes a rubber pad disposed between the contact surfaces of theguide plate 23 and thelifting platform 424, when theguide plate 23, themember 70 and theelectrode pen 22 form a passage, a current flows through the inside of themember 70, and a defect inside themember 70 causes a resistance at the position to be larger than that in a normal area, that is, when the current flows into the defect portion of themember 70, the resistance heat generated by the defect portion is much higher than that in the normal area, and pulse current is continuously applied to refine grains at the defect portion of themember 70, so as to reduce the resistance, and the grain thickness of the defect portion and that of the normal area are equal to each other, thereby completing the repair.

Further, theelectrode pen 22 comprises a pen holder and a ball, the mechanical arm 21 clamps the pen holder, and theelectrode pen 22 is made of one of chromium zirconium copper, beryllium nickel copper and beryllium cobalt copper.

Control module 30 includes first control module, second control module and third control module, first control module is used forcontrol elevating platform 424's lift, second control module is used for controlling laser instrument 11, the third control module is used for controlling the mechanical motion of arm 21, and first control module through setting up is to elevatingplatform 424 lift control, second control module control laser instrument 11 and the motion ofmirror 12, third control module control arm 21, many-sided combined action, improvement production efficiency.

Further, agas inlet 50 and agas outlet 60 are arranged in the sealed housing 41, thegas inlet 50 and thegas outlet 60 are respectively arranged on two sides of the sealed housing 41, and the shielding gas enters the sealed housing 41 from thegas inlet 50 and flows out from thegas outlet 60, specifically, the shielding gas is an inert gas.

A second embodiment of the present invention provides a 3D molding repair method, where the 3D molding repair method is applied to a 3D molding repair device, and the method includes: preparation of a model, preparation of powder, molding of a component and repair of the component.

Preparation of a model: modeling is carried out on thecomponent 70 to be molded through a computer, then the models are layered in sequence through software, the section of each layer of the three-dimensional model is obtained, an stp format file is formed, and the stp format file is stored in the computer.

Preparation of powder: the first control module controls thelifting platform 424 in thepowder storage cavity 421 to lift, thelifting platform 424 pushes the powder pile above thelifting platform 424 to the outside of thepowder storage cavity 421, meanwhile, thelifting platform 424 of the formingcavity 422 descends to form a certain height difference with the top of the formingcavity 422, and the first control module controls thesynchronous motor 428 to rotate, so that the bidirectional threadedrod 427 is driven to rotate, thescraper 425 is driven to horizontally move, and the powder in thepowder storage cavity 421 is flatly paved on theguide plate 23 of the formingcavity 422.

And (3) forming of the member: the computer processes the stp file, controls the second control module through the control unit, controls the laser 11 through the second control module, sets working parameters of the laser 11, and performs sintering molding on the powder in themolding cavity 422 to form thecomponent 70.

And (3) repairing the component: the third control module controls the mechanical arm 21, so that theelectrode pen 22 is controlled to be close to and contact with the defect part of the formedmember 70, the tip end of theelectrode pen 22 forms a passage with theguide plate 23 and the formedmember 70, and the local defect part of themember 70 is repaired.

And (3) finishing the components: the forming step of the component and the repairing step of the component are repeated until thecomponent 70 is completed.

Further, the single lifting height of thelifting platform 424 is 0.1-1 mm.

Further, the output power of the laser 11 is 500-.

Further, the voltage between theelectrode pen 22 and the taperedconductor 231 is 5-10V, the current is 1-3000A, the pressure is 1-500N, and the welding speed is 0.1-50 mm/s.

A 3D molding repair apparatus provided by a third embodiment of the present invention: theguide plate 23 is provided therein with a plurality ofconical conductors 231, and the plurality ofconical conductors 231 are electrically connected.

A 3D molding repair method provided by a fourth embodiment of the present invention:

and (3) repairing the component: the third control module controls the mechanical arm 21, so that theelectrode pen 22 is controlled to be close to and contact with the defect part of the formedmember 70, the tip of theelectrode pen 22 forms a passage with one of the conical conductors in theguide plate 23 and the formedmember 70, and the local defect part of themember 70 is repaired.

In order to better understand the technical content of the invention, the specific scheme is specifically shown as follows:

a three-dimensional model is created through a computer, firstly, iron powder is used as a production material of thecomponent 70, the drying treatment is carried out at the temperature of 100 ℃ and the temperature of 200 ℃, the treatment time is more than 1.5 hours, after the drying is finished, the powder is stored in thepowder storage cavity 421, and then the sealing shell 41 is filled with protective gas, wherein in the embodiment, argon is used as the protective gas.

And setting parameters of the second control module, including laser power, scanning speed, spot size and the like.

Parameters of the third control module are set, including welding current, electrode pressure, welding speed, etc.

The parameters of the first control module are set, thelifting platform 424 in thepowder storage cavity 421 rises once when one layer is laid, meanwhile, thelifting platform 424 in the formingcavity 422 descends once, thescraper 425 scrapes back and forth once, the thickness of thelifting platform 424 rising each time is 0.24mm, and the descending height is 0.2 mm.

The laser beam scans a specific area under the regulation and control of the second control module and thegalvanometer 12, after powder in an annular area sintered by the base layer is melted, cooled and solidified, the lifting table 424 in thepowder storage cavity 421 rises once, the lifting table 424 in themolding cavity 422 descends once, thescraper 425 scrapes back and forth once, and then the next sintering is carried out for circular operation.

When the forming module 10 is paused once every sintering layer, the third control module controls therepair module 20 to start repairing thecomponent 70, theguide plate 23 is electrified, thecomponent 70 is positioned on theguide plate 23, theelectrode pen 22 is contacted with the outer surface of thecomponent 70 under the control of the mechanical arm 21 to form a passage with the defective part of thecomponent 70 and theguide plate 23, thecomponent 70 is heated to a repairable state by the electrothermal effect generated by the contact surface and the adjacent area of thecomponent 70, and because the contact resistance of the defective part of the component is far greater than that of the normal part, the resistance heat is far greater than that of the normal area, namely, the defect of the formingcomponent 70 is accurately repaired, and simultaneously, thewhole component 70 is subjected to heat treatment to eliminate the internal stress of the component.

And then, after the repairing is finished, the forming module 10 and the repairingmodule 20 circulate the work, and after thecomponent 70 is cooled for a certain time, the sealing shell 41 is opened, and the formedcomponent 70 is taken out.

The above-described embodiments describe the technical principles of the present invention, and these descriptions are only for the purpose of explaining the principles of the present invention and are not to be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims (10)

1. The utility model provides a 3D shaping prosthetic devices, includes shaping module, repair module, control module and work module, its characterized in that: the working module is used for forming materials required by a component and comprises a sealing shell and a powder laying module, the powder laying module is used for laying powder forming the section of a single-layer forming component, the powder laying module is arranged in the sealing shell and comprises a working table, a powder storage cavity, a forming cavity and a powder recovery cavity are sequentially arranged in the working table, lifting tables are arranged in the powder storage cavity and the forming cavity, the working table further comprises a scraper and a driving assembly, and the driving assembly drives the scraper to reciprocate above the powder storage cavity, the forming cavity and the powder recovery cavity;

the molding module comprises a laser and a vibrating mirror, and the vibrating mirror is used for changing the laser deflection angle of the laser so as to realize the molding of powder in different areas of the molding cavity and form a three-dimensional molding member;

the repairing module comprises a mechanical arm, an electrode pen and a guide plate, the electrode pen is fixed on the mechanical arm, the guide plate is arranged on the lifting table, when the electrode pen is close to the guide plate, the electrode pen, the guide plate and a forming component form a loop, and current flows through the forming component to repair the part of the forming component with defects;

the control module comprises a first control module, a second control module and a third control module, the first control module is used for controlling the lifting of the lifting platform, the second control module is used for controlling the laser, and the third control module is used for controlling the mechanical movement of the mechanical arm.

2. The 3D contoured repair device according to claim 1, wherein: the drive assembly comprises two bidirectional threaded rods parallel to the length direction of the workbench and continuous in end, threaded holes are formed in two ends of the scraper respectively, the two ends of the scraper are in threaded connection with two bidirectional threaded rods in parallel and continuous in end respectively, the drive assembly further comprises a synchronous motor, and the input end of each bidirectional threaded rod is connected with the output end of the synchronous motor.

3. The 3D contoured repair device according to claim 2, wherein: the cutting edge of the scraper is arranged at intervals with the tops of the powder storage cavity, the forming cavity and the powder recovery cavity.

4. The 3D contoured repair device according to claim 1, wherein: the repairing module further comprises a rubber pad, and the rubber pad is arranged between the guide plate and the contact surface of the lifting platform.

5. The 3D contoured repair device according to claim 1, wherein: the conductor is internally provided with a plurality of conical conductors which are electrically connected.

6. The 3D contoured repair device according to claim 1, wherein: the electrode pen comprises a pen holder and a ball, and the mechanical arm clamps the pen holder.

7. The 3D contoured repair device according to claim 1, wherein: the air inlet and the air outlet are arranged in the sealed shell, the air inlet and the air outlet are respectively arranged on two sides of the sealed shell, and the protective gas enters the sealed shell from the air inlet and flows out from the air outlet.

8. The 3D contoured repair device according to claim 5, wherein: the protective gas is inert gas.

9. A3D forming repair method is applied to a 3D forming repair device and is characterized in that: the method comprises the following steps:

s1: modeling a component to be molded through a computer, layering the models in sequence by using software to obtain the section of each layer of three-dimensional model, forming an stp format file, and storing the stp format file in the computer;

s2: preparation of powder: the first control module controls the lifting platform in the powder storage cavity to rise and push the powder pile above the lifting platform to the outside of the powder storage cavity, meanwhile, the lifting platform of the forming cavity descends to form a height difference with the top of the forming cavity, and the first control module controls the synchronous motor to rotate so as to drive the bidirectional threaded rod to rotate, drive the scraper to horizontally move and enable the powder in the powder storage cavity to be flatly laid on the guide plate of the forming cavity;

s3: and (3) forming of the member: the computer processes the stp file, the second control module is controlled by the computer, the second control module controls the laser, working parameters of the laser are set, and powder in the forming cavity is sintered and formed to form a single-layer three-dimensional component;

s4: and (3) repairing the component: the third control module controls the mechanical arm so as to control the electrode pen to be close to and contact with the outer surface of the formed single-layer component, the tip of the electrode pen forms a passage with the guide plate and the single-layer component part, and the defect part of the component is repaired;

s5: and (3) finishing the components: repeat S3 and S4 until the building block is complete.

10. The 3D molding repair method of claim 7, wherein: the single lifting height of the lifting platform is 0.1-3 mm;

the output power of the laser is 500-;

the voltage between the electrode pen and the conical conductor is 5-10V, the current is 1-3000A, the pressure is 1-500N, and the welding speed is 0.1-50 mm/s.

Images