Thin-wall curved surface component forming machine tool and artificial intelligence system

Abstract

The invention relates to the technical field of metal part forming machining, in particular to a thin-wall curved surface component forming machine tool and an artificial intelligence system. The forming machine tool comprises a machine tool body as well as an extrusion rod assembly, a mold and an ejector rod which are arranged on the machine tool body from top to bottom, the die comprises an outer cylinder die, a lower concave die and an upper concave die, the lower concave die and the upper concave die are arranged in the outer cylinder die, a center through hole and a plurality of axial through holes are formed in the upper concave die, and the metal thin-wall cylinder is placed between the upper concave die and the lower concave die. The inner side and the outer side of the metal thin-wall cylinder are respectively an inner metal filling space and an outer metal filling space which are used for filling metal; the extrusion rod assembly is used for driving the upper female die and the lower female die to be closed, a formed metal thin-wall spherical shell is obtained, and internal metal and external metal conduct back pressure follow-up. And the ejector rod penetrates through a central bottom hole of the lower concave mold and is used for opening the mold and ejecting the formed metal thin-wall spherical shell. The method has the advantages of high yield, few microcosmic wrinkles and cracks, long fatigue life and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of metal part forming and processing, and in particular to a thin-walled curved surface component forming machine tool and an artificial intelligence system. Background Art

[0002] Molds have been widely used before the industrial age, including mechanical jigs, woodworking jigs, welding jigs, jewelry jigs, and other fields. Certain types of jigs are also called "molds" or "accessories", and their main purpose is to repeat and accurately reproduce a part. Thin-walled metal balls are a type of material with the characteristics of light weight, large specific surface area, and high specific mechanical properties. They are widely used in aerospace, medicine, atomic energy, automobiles, high-speed rail, construction, electrochemistry and other fields. The manufacturing method of thin-walled metal balls mainly includes hydraulic expansion forming. The main steps of hydraulic expansion forming are: blanking, bending, assembly welding, liquid filling and expansion. The method used to prepare thin-walled metal balls has the advantages of high material utilization and is convenient for on-site assembly and welding. However, the hydraulic expansion forming method has the technical problems of long time and process, easy cracking of welds during liquid filling and expansion, and difficulty in ensuring the quality of the inner and outer surfaces of thin walls. This technical problem needs to be solved urgently. Summary of the invention

[0003] In response to the above problems, the purpose of the present invention is to provide a thin-walled curved surface component forming machine tool and an artificial intelligence system to reduce the preparation process of thin-walled metal balls and improve the quality of the finished product.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An embodiment of the present invention provides a thin-walled curved surface component forming machine tool, comprising a machine tool body, and further comprising an extrusion rod assembly, a mold, and an ejector rod arranged on the machine tool body from top to bottom;

[0006] The mold includes an outer cylinder mold and a lower concave mold and an upper concave mold arranged in the outer cylinder mold, wherein the upper concave mold and the outer cylinder mold are slidably matched, and the metal thin-walled cylinder to be extruded is placed between the upper concave mold and the lower concave mold, and the space between the metal thin-walled cylinder and the outer cylinder mold is an external metal filling space, and the inner side of the metal thin-walled cylinder is an internal metal filling space; the upper concave mold is provided with a central through hole and multiple axial through holes surrounding the central through hole, the internal metal filling space and the central through hole of the upper concave mold are filled with internal metal, and the external metal filling space and the multiple axial through holes of the upper concave mold are filled with external metal;

[0007] The extrusion rod assembly is used to drive the upper concave mold and the lower concave mold to close the mold. The metal thin-walled cylinder is extruded inside the upper and lower concave molds to form a metal thin-walled spherical shell. The inner metal and the outer metal are respectively back-pressure-followed on the inner and outer sides of the metal thin-walled cylinder.

[0008] The ejector rod passes through the central bottom hole of the lower concave mold, and the ejector rod is used for mold opening and ejecting the formed thin-walled metal spherical shell.

[0009] In a possible implementation manner, the extrusion rod assembly includes an inner extrusion rod, a middle cylinder extrusion rod, and an outer cylinder extrusion rod that are coaxially nested and slidably matched from inside to outside in sequence. Among them, the middle cylinder extrusion rod is used to drive the upper concave mold to descend and extrude the thin-walled metal cylinder. During the deformation process of the thin-walled metal cylinder, the internal metal is extruded from the central through hole of the upper concave mold into the inner space of the middle cylinder extrusion rod, and the external metal is extruded from the multiple axial through holes of the upper concave mold into the outer space of the middle cylinder extrusion rod.

[0010] The inner extrusion rod and the outer cylinder extrusion rod are respectively used for back pressure follow-up of the internal metal and the external metal.

[0011] In a possible implementation manner, both the lower concave mold and the upper concave mold have hemispherical cavities.

[0012] Both end faces of the thin-walled metal cylinder are inner concave conical surfaces that are recessed inward. The outer edges of the inner concave conical surfaces are tangent to the inner surfaces of the hemispherical cavities of the upper concave mold and the lower concave mold.

[0013] During the extrusion molding process, both ends of the thin-walled metal cylinder are bent along the inner surfaces of the hemispherical cavities of the lower concave mold and the upper concave mold respectively.

[0014] In a possible implementation manner, the internal metal includes a metal upper rotating part and a metal lower rotating part that are symmetrically arranged up and down. Among them, a positioning column inserted into the central through hole of the upper concave mold is provided at the top of the metal upper rotating part; a positioning groove for positioning with the ejector rod is provided at the bottom of the metal lower rotating part.

[0015] In a possible implementation manner, both the metal upper rotating part and the metal lower rotating part include a cylindrical rotating body and a hemispherical body. Among them, the cylindrical rotating body is accommodated in the thin-walled metal cylinder, and the hemispherical body is accommodated in the upper concave mold or the lower concave mold.

[0016] In a possible implementation manner, the external metal includes a metal cylinder and multiple metal cylinders. Among them, the metal cylinder is located in the external metal filling space, and the multiple metal cylinders are respectively inserted into the multiple axial through holes of the upper concave mold.

[0017] In a possible implementation manner, the melting points of both the internal metal and the external metal are lower than the melting point of the thin-walled metal cylinder.

[0018] In a possible implementation manner, both the internal metal and the external metal are aluminum alloys, and the thin-walled metal cylinder is a superalloy.

[0019] In one possible implementation, the forming method of the thin-walled curved surface component forming machine tool includes the following steps:

[0020] Step S1: The outer cylinder mold and the lower concave mold are installed in place, a thin-walled metal cylinder is placed on the lower concave mold, the inner metal filling space and the outer metal filling space are filled with inner metal and outer metal, and the upper concave mold is placed;

[0021] Step S2: the extrusion rod assembly descends, the middle cylinder extrusion rod presses the upper concave mold, and the inner extrusion rod and the outer cylinder extrusion rod make the inner metal filling space and the outer metal filling space in a high pressure state;

[0022] Step S3: The middle cylinder extrusion rod drives the upper concave die to descend and extrude the metal thin-walled cylinder. The two ends of the metal thin-walled cylinder are bent and deformed in the upper concave die and the lower concave die respectively. As the volume of the internal metal filling space decreases, the inner metal is extruded from the central through hole of the upper concave die into the inner space of the middle cylinder extrusion rod. As the volume of the external metal filling space decreases, the outer metal is extruded from the multiple axial through holes of the upper concave die into the outer space of the middle cylinder extrusion rod.

[0023] The inner extrusion rod and the outer cylinder extrusion rod respectively perform back pressure follow-up on the inner metal and the outer metal.

[0024] Step S4: the upper concave mold is lowered to close the mold with the lower concave mold, and the metal thin-walled cylinder is extruded into a metal thin-walled spherical shell, the outer metal is extruded into an outer metal molded component, and the inner metal is extruded into an inner metal molded component. The inner metal molded component is a connected structure of the inner portion of the metal thin-walled spherical shell and the inner portion of the middle cylinder extrusion rod;

[0025] Step S5: the extrusion rod assembly rises to release the high pressure;

[0026] Step S6: The ejector rod lifts the internal metal forming component, the metal thin-walled spherical shell and the upper concave mold to above the outer cylinder mold;

[0027] Step S7: isolating the portion of the internal metal forming component located outside the metal thin-walled spherical shell and separating the upper concave mold;

[0028] Step S8: heat treating the metal thin-walled spherical shell containing a portion of the internal metal molded component, so that the internal metal molded component is melted and flows out of the metal thin-walled spherical shell;

[0029] Step S9: Perform material science and mechanical analysis on the metal thin-walled spherical shell.

[0030] Another aspect of the present invention provides an artificial intelligence system for controlling the thin-walled curved surface component forming machine tool. The artificial intelligence system comprises:

[0031] An artificial intelligence multi-modal large model for forming quality specialty, used for extrusion path planning of a forming machine tool for thin-walled curved surface components;

[0032] A heat treatment module, used for heat treatment control of a metal thin-walled spherical shell;

[0033] A testing module, used for testing the mechanical properties and material characteristics of a metal thin-walled spherical shell;

[0034] A test data acquisition module, used for acquiring the test data of the testing module;

[0035] A machine learning module, used for perceiving the test data acquired by the test data acquisition module and the temperature curve of the heat treatment module, predicting the forming quality from a metal thin-walled cylinder to a metal thin-walled spherical shell through an extrusion simulation module, and controlling the forming process movement of the forming machine tool for thin-walled curved surface components and the process temperature curve of the heat treatment module.

[0036] The advantages and positive effects of the present invention are as follows: The present invention provides a forming machine tool for thin-walled curved surface components. During the process of forming a metal thin-walled cylinder into a metal thin-walled spherical shell, the inner wall and outer wall of the metal thin-walled cylinder synchronously follow the back pressure, having the advantages of high product yield, few microscopic fold cracks, high fatigue life, etc. In the final stage of forming a metal thin-walled cylinder into a metal thin-walled spherical shell, the ejector rod effectively controls the relative sliding speed space vector between the metal thin-walled spherical shell and the mold. After the metal thin-walled spherical shell is formed, the axis of the installation through hole of the metal thin-walled spherical shell is coaxial with the extrusion movement axis, having the advantages of high product yield, few microscopic fold cracks, high fatigue life, etc., effectively reducing the error of the final forming surface, making the surface of the metal thin-walled spherical shell smoother, and improving the extrusion surface quality.

[0037] The present invention can effectively and continuously optimize the forming quality through an artificial intelligence system, and the high-pressure control of the inner metal filling and outer metal filling effectively improves geometric tolerances such as the sphericity of the product. There is no weld, effectively improving the product life and reliability.

[0038] Other features and advantages of the present invention will be described in the subsequent specification, and, in part, will become apparent from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the written specification and the drawings.

[0039] The technical solutions of the present invention will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0040] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0041] Figure 1 This is the axial sectional view before extrusion forming of a thin-walled curved surface component forming machine tool of the present invention;

[0042] Figure 2 is Figure 1 the partial enlarged view at position A in

[0043] Figure 3 This is the exploded view before extrusion forming of a thin-walled curved surface component forming machine tool of the present invention;

[0044] Figure 4 This is the axial sectional view after extrusion forming of a thin-walled curved surface component forming machine tool of the present invention;

[0045] Figure 5 is Figure 4 the partial enlarged view at position B in

[0046] Figure 6 This is the exploded view after extrusion forming of a thin-walled curved surface component forming machine tool of the present invention;

[0047] Figure 7 This is the control flow block diagram of an artificial intelligence system in another embodiment of the present invention.

[0048] In the figure: 1 - outer cylinder mold, 2 - lower concave mold, 121 - inner concave cone surface, 3 - ejector rod, 4 - outer cylinder extrusion rod, 5 - middle cylinder extrusion rod, 6 - inner extrusion rod, 7 - upper concave mold, 8 - metal cylinder, 9 - metal upper rotating part, 10 - metal cylinder, 11 - metal lower rotating part, 12 - metal thin-walled cylinder, 13 - external metal forming component, 14 - internal metal forming component, 15 - metal thin-walled spherical shell, 151 - installation through hole. Detailed implementation manners

[0049] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0050] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0051] See Figures 1 to 6As shown in the figure, an embodiment of the present invention provides a forming machine tool for thin-walled curved surface components, which includes a machine tool body, an extrusion rod assembly, a mold, and an ejector rod 3 arranged on the machine tool body from top to bottom; the mold includes an outer cylinder mold 1, a lower concave mold 2 and an upper concave mold 7 arranged inside the outer cylinder mold 1, wherein the upper concave mold 7 is slidably matched with the outer cylinder mold 1, and the metal thin-walled cylinder 12 to be extruded and formed is placed between the upper concave mold 7 and the lower concave mold 2, and there is an external metal filling space between the metal thin-walled cylinder 12 and the outer cylinder mold 1, and the inner side of the metal thin-walled cylinder 12 is an internal metal filling space; the upper concave mold 7 is provided with a central through hole and a plurality of axial through holes surrounding the central through hole, the internal metal filling space inside the metal thin-walled cylinder 12 and the central through hole of the upper concave mold 7 are filled with internal metal, and the external metal filling space outside the metal thin-walled cylinder 12 and the plurality of axial through holes of the upper concave mold 7 are filled with external metal; the extrusion rod assembly is used to drive the upper concave mold 7 and the lower concave mold 2 to close the mold, and the metal thin-walled cylinder 12 is extruded and formed into a metal thin-walled spherical shell 15 on the inner sides of the upper concave mold 7 and the lower concave mold 2, and the internal metal and the external metal perform back pressure follow-up on the inner and outer sides of the metal thin-walled cylinder 12 respectively; the ejector rod 3 penetrates the central bottom hole of the lower concave mold 2, and the ejector rod 3 is used to open the upper concave mold 7 and eject the formed metal thin-walled spherical shell 15.

[0052] See Figure 1 and Figure 3 As shown in the figure, in an embodiment of the present invention, the extrusion rod assembly includes an inner extrusion rod 6, a middle cylinder extrusion rod 5, and an outer cylinder extrusion rod 4 that are coaxially nested and slidably matched with each other from inside to outside. Among them, the middle cylinder extrusion rod 5 is used to drive the upper concave mold 7 to descend and extrude the metal thin-walled cylinder 12. During the deformation process of the metal thin-walled cylinder 12, the internal metal is extruded from the central through hole of the upper concave mold 7 into the inner space of the middle cylinder extrusion rod 5, and the external metal is extruded from the plurality of axial through holes of the upper concave mold 7 into the outer space of the middle cylinder extrusion rod 5; the inner extrusion rod 6 and the outer cylinder extrusion rod 4 are respectively used to perform back pressure follow-up on the internal metal and the external metal, so as to control the inner and outer surface qualities of the metal thin-walled cylinder 12.

[0053] Specifically, the outer cylinder extrusion rod 4, the middle cylinder extrusion rod 5, and the inner extrusion rod 6 are all servo high-pressure hydraulic controlled for lifting movement, and the extrusion pressure thereof is controllable from 0 to 11 GPa. The extrusion forming principle is that severe plastic deformation (SPD), as a new plastic deformation method, can introduce a large strain during the deformation process. It is very difficult to achieve a true strain greater than 1 in traditional plastic deformation. The outer cylinder extrusion rod 4 is used to control the high-pressure state of the external metal filling space, the middle cylinder extrusion rod 5 is used to control the up and down movement of the upper concave mold 7, and the inner extrusion rod 6 is used to control the high-pressure state of the internal metal filling space.

[0054] In an embodiment of the present invention, the lower concave mold 2 and the upper concave mold 7 both have hemispherical concave cavities; both end faces of the thin-walled metal cylinder 12 are inner concave conical surfaces 121 that are recessed inwardly, and the outer edges of the inner concave conical surfaces 121 are tangent to the inner surfaces of the hemispherical concave cavities of the upper concave mold 7 and the lower concave mold 2. Refer to Figure 2 as shown; during the extrusion molding process, both ends of the thin-walled metal cylinder 12 are bent along the inner surfaces of the hemispherical concave cavities of the lower concave mold 2 and the upper concave mold 7. Specifically, the angle between the inner concave conical surface 121 at both ends of the thin-walled metal cylinder 12 and the end plane of the lower concave mold 2 or the upper concave mold 7 is a, and in this embodiment, a = 7.9°.

[0055] Refer to Figure 1 and Figure 3 as shown, in an embodiment of the present invention, the internal metal includes a metal upper rotating part 9 and a metal lower rotating part 11 that are symmetrically arranged up and down, wherein a positioning column is provided at the top of the metal upper rotating part 9 and is inserted into the central through hole of the upper concave mold 7; a positioning groove for positioning with the ejector rod 3 is provided at the bottom of the metal lower rotating part 11. The ejector rod 3 is cylindrical, and in the initial position, the ejector rod 3 penetrates the central bottom hole of the lower concave mold 2, and the upper end of the ejector rod 3 extends into the positioning groove at the bottom of the metal lower rotating part 11. The outer cylinder mold 1 and the lower concave mold 2 are stationary relative to the ground, and the ejector rod 3 can move up and down to eject the molded material in the mold.

[0056] Specifically, both the metal upper rotating part 9 and the metal lower rotating part 11 include a cylindrical rotating body and a hemispherical body, wherein the cylindrical rotating body is accommodated in the thin-walled metal cylinder 12, and the hemispherical body is accommodated in the upper concave mold 7 or the lower concave mold 2.

[0057] Refer to Figure 1 as shown, in an embodiment of the present invention, the external metal includes a metal cylinder 10 and a plurality of metal cylinders 8, wherein the metal cylinder 10 is located in the external metal filling space, and the plurality of metal cylinders 8 are respectively inserted into a plurality of axial through holes of the upper concave mold 7. Preferably, four axial through holes are evenly distributed on the upper concave mold 7, and the four metal cylinders 8 are respectively inserted into the four axial through holes.

[0058] Furthermore, the melting points of both the internal metal and the external metal are lower than the melting point of the thin-walled metal cylinder 12. In this embodiment, both the internal metal and the external metal are aluminum alloys, preferably aluminum alloy grade 4047, and its melting point is 575 °C. The thin-walled metal cylinder 12 is a superalloy, preferably grade GH99, and the heat treatment temperature is 753 °C - 758 °C for 7 hours.

[0059] Refer to Figures 4 to 6As shown, in this embodiment of the present invention, a thin-walled metal spherical shell 15 is provided with a pair of coaxial mounting holes 151 arranged along the central axis of the thin-walled metal sphere. The two mounting holes 151 are coaxial cylindrical holes. The lower mounting hole 151 is positioned with the ejector rod 3, effectively improving the precision of the final molding. The smooth surface of the thin-walled metal spherical shell 15 enhances the extrusion surface quality.

[0060] The present invention provides a thin-walled curved surface component forming machine tool, and a thin-walled curved surface component forming method thereof, comprising the following steps:

[0061] Step S1: The outer cylinder mold 1 and the lower concave mold 2 are installed in place, a metal thin-walled cylinder 12 is placed on the lower concave mold 2, the inner metal filling space and the outer metal filling space are filled with inner metal and outer metal, and the upper concave mold 7 is placed. Figure 1 As shown;

[0062] Step S2: the extrusion rod assembly descends, the middle tube extrusion rod 5 presses the upper concave mold 7, and the inner extrusion rod 6 and the outer tube extrusion rod 4 make the inner metal filling space and the outer metal filling space in a high pressure state;

[0063] Step S3: the middle cylinder extrusion rod 5 drives the upper concave die 7 to descend and extrude the metal thin-walled cylinder 12. The two ends of the metal thin-walled cylinder 12 are bent and deformed in the upper concave die 7 and the lower concave die 2 respectively; as the volume of the internal metal filling space decreases, the internal metal is extruded from the central through hole of the upper concave die 7 to the inner space of the middle cylinder extrusion rod 5; as the volume of the external metal filling space decreases, the external metal is extruded from the multiple axial through holes of the upper concave die 7 to the outer space of the middle cylinder extrusion rod 5, and the inner extrusion rod 6 and the outer cylinder extrusion rod 4 perform back pressure follow-up on the internal metal and the external metal respectively.

[0064] Step S4: The upper concave mold 7 is lowered to close the mold with the lower concave mold 2, and the metal thin-walled cylinder 12 is extruded into a metal thin-walled spherical shell 15, the outer metal is extruded into an outer metal molded component 13, and the inner metal is extruded into an inner metal molded component 14. The inner metal molded component 14 is a connected structure including a portion located inside the metal thin-walled spherical shell 15 and a portion located inside the middle cylinder extrusion rod 5, see Figure 4 and Figure 6 As shown;

[0065] Step S5: the extrusion rod assembly rises to release the high pressure;

[0066] Step S6: The ejector rod 3 lifts the inner metal forming component 14, the metal thin-walled spherical shell 15 and the upper concave mold 7 to above the outer cylinder mold 1;

[0067] Step S7: isolating the portion of the internal metal forming component 14 located outside the metal thin-walled spherical shell 15 and separating the upper concave mold 7;

[0068] Step S8: Heat-treat the thin-walled metal spherical shell 15 containing part of the internal metal forming member 14, and the internal metal forming member 14 melts and flows out of the thin-walled metal spherical shell 15;

[0069] Step S9: Conduct material science and mechanics analysis on the thin-walled metal spherical shell 15.

[0070] In the process of forming a thin-walled cylinder into a thin-walled spherical shell, the deformation instability leading to surface micro-fold cracks is the core point of the key technology. In the embodiment of the present invention, during the process of forming the thin-walled metal cylinder 12 into the thin-walled metal spherical shell 15, the inner wall and the outer wall of the thin-walled metal cylinder 12 follow the back pressure synchronously, having the advantages of high product yield, few micro-fold cracks, high fatigue life, etc. In the final stage of forming the thin-walled metal cylinder 12 into the thin-walled metal spherical shell 15, the ejector rod 3 effectively controls the spatial vector of the relative sliding speed between the thin-walled metal spherical shell 15 and the mold. After the thin-walled metal spherical shell 15 is formed, the axis of the mounting through hole 151 of the thin-walled metal spherical shell 15 is coaxial with the extrusion movement axis, having the advantages of high product yield, few micro-fold cracks, high fatigue life, etc.

[0071] Based on the above design concept, another embodiment of the present invention provides an artificial intelligence system, which is applied to the control of the thin-walled curved surface member forming machine tool in the above embodiment.

[0072] See Figure 7 As shown in the figure, the artificial intelligence system includes:

[0073] A professional artificial intelligence multi-modal large model for forming quality, used for the extrusion path planning of the thin-walled curved surface member forming machine tool; specifically including the forming process motion control of the outer cylinder extrusion rod 4, the middle cylinder extrusion rod 5 and the inner extrusion rod 6;

[0074] A heat treatment module, used for heat treatment control of the thin-walled metal spherical shell 15;

[0075] A testing module, used for testing the mechanical properties and material characteristics of the thin-walled metal spherical shell 15;

[0076] A test data acquisition module, used for acquiring the test data of the testing module;

[0077] A machine learning module, used for perceiving the test data collected by the test data acquisition module and the temperature curve of the heat treatment module, predicting the forming quality from the thin-walled metal cylinder 12 to the thin-walled metal spherical shell 15 through the extrusion simulation module, and controlling the forming process motion of the thin-walled curved surface member forming machine tool and the process temperature of the heat treatment module.

[0078] In an embodiment of the present invention, the test module includes a mechanical property test acquisition unit and a material property test acquisition unit. The mechanical property test acquisition unit is used to acquire the mechanical properties of the thin-walled metal spherical shell 15, and the material test acquisition unit is used to acquire the material properties of the thin-walled metal spherical shell 15.

[0079] The heat treatment module includes a heating control unit and a thermal sensor unit. The thermal sensor unit is used to detect the heat treatment temperature information, and the heating control unit controls the heat treatment temperature according to the heat treatment temperature information detected by the thermal sensor unit.

[0080] The professional artificial intelligence multimodal large model for forming quality uses advanced technologies such as artificial intelligence, machine learning, deep learning, forming process, embodied intelligence, and big data to empower the quality planning of the forming of thin-walled cylinders to thin-walled curved surfaces, improving production quality and efficiency.

[0081] The reward function of machine learning (especially reinforcement learning) is the core mechanism to guide intelligence. The quality control unit, efficiency and qualified rate control unit are the core goals to evaluate the forming process of the forming machine tool. By quantitatively evaluating the behavior and state value, the intelligent agent is guided to optimize the strategy in the reward direction. The machine learning of the present invention can continuously optimize the forming process of the forming machine tool. The reward function guides production according to the production goals of customers. Balanced incentives: the qualified rate, efficiency, and scrap rate are balanced with each other. The reward and punishment function of machine learning is the material and mechanical test indexes, and the variables of machine learning are deformation extrusion control and back pressure control.

[0082] In an embodiment of the present invention, the test of the test module includes but is not limited to the operation of the thin-walled metal spherical shell 15 under extreme high temperature and complex stress environments.

[0083] Mechanical property tests (room temperature and high temperature mechanical properties)

[0084] Tensile test: Determine the tensile strength, yield strength and elongation of the thin-walled part, and simulate the actual stress state.

[0085] Hardness test: Evaluate the surface and internal hardness distribution of the material, and commonly use Vickers or Rockwell hardness testers.

[0086] High temperature creep and rupture properties: Test the deformation and fracture characteristics of the material under long-term high temperature load through a high temperature creep and rupture testing machine to ensure the stability of the part during service.

[0087] Microstructure analysis test (metallographic structure observation)

[0088] Use a metallurgical microscope or scanning electron microscope (SEM) to analyze the grain size, phase distribution (such as γ' strengthening phase) and precipitate morphology to evaluate the material uniformity.

[0089] Key point: During the forming process of the thin-walled metal spherical shell 15, grain distortion may occur due to processing, and the process needs to be optimized by recrystallization control.

[0090] Defect detection: Detect microscopic defects such as microcracks and pores, and analyze crystal orientation by electron backscatter diffraction (EBSD) to avoid failure in stress concentration areas.

[0091] Special test for high-temperature performance: Oxidation resistance and corrosion resistance. Simulate the high-temperature oxidation environment (such as gas corrosion), and evaluate the stability of the oxide film on the material surface through thermogravimetric analysis (TGA) or cyclic oxidation test.

[0092] Thermal fatigue performance detection: Test the thermal fatigue resistance of parts under alternating temperature loads to simulate actual working conditions.

[0093] Nondestructive testing (NDT) technology (internal defect detection)

[0094] Ultrasonic testing: Suitable for detecting internal cracks, delamination and other defects in thin-walled parts, with high sensitivity and no need to damage the sample.

[0095] X-ray testing: Identify volumetric defects such as pores and inclusions through imaging technology, suitable for thin-walled parts with complex geometries.

[0096] Infrared thermal imaging: Quickly scan the surface temperature distribution to indirectly reflect the uniformity of the internal structure of the material.

[0097] Surface integrity assessment: Use penetrant testing (PT) or magnetic particle testing (MT) to check surface microcracks to ensure no damage caused by processing or service.

[0098] Dimensional and morphological accuracy detection: Conduct three-dimensional scanning or laser measurement on the wall thickness uniformity and contour accuracy of thin-walled parts to ensure compliance with design requirements and avoid local stress concentration caused by forming process errors.

[0099] The detection of thin-walled parts made of superalloys requires multi-dimensional evaluation of mechanical properties, microstructure, high-temperature performance and nondestructive testing. The introduction of modern detection technologies (such as ICP-MS, SEM, ultrasonic imaging) has improved efficiency and accuracy. Considering the particularity of thin-walled parts, special attention should be paid to the control of microscopic defects and the verification of long-term stability under high-temperature environments. Use advanced equipment and technical teams to achieve full-process quality control.

[0100] An artificial intelligence system provided by the present invention uses forming analysis software, preferably DEFORM-3D: This is a process simulation system based on the finite element analysis method, specially used for the simulation of metal three-dimensional forming and its related forming processes and heat treatment processes. It has excellent accuracy and stability, can simulate large deformations and thermal characteristics, and is suitable for the analysis of various material properties during the metal forming process.

[0101] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A thin-walled curved surface component forming machine tool, comprising a machine tool body, characterized in that, It further includes an extrusion rod assembly, a die and an ejector rod (3) which are arranged on the machine tool body from top to bottom; The die includes an outer cylinder die (1), a lower concave die (2) and an upper concave die (7) arranged in the outer cylinder die (1). The upper concave die (7) is slidably matched with the outer cylinder die (1). The metal thin-walled cylinder (12) to be extruded is placed between the upper concave die (7) and the lower concave die (2). There is an external metal filling space between the metal thin-walled cylinder (12) and the outer cylinder die (1), and an internal metal filling space inside the metal thin-walled cylinder (12). The upper concave die (7) is provided with a central through hole and a plurality of axial through holes surrounding the central through hole. The internal metal filling space and the central through hole of the upper concave die (7) are filled with internal metal, and the external metal filling space and the plurality of axial through holes of the upper concave die (7) are filled with external metal; The extrusion rod assembly is used to drive the upper concave die (7) and the lower concave die (2) to close the mold. The metal thin-walled cylinder (12) is extruded into a metal thin-walled spherical shell (15) inside the upper concave die (7) and the lower concave die (2). The internal metal and the external metal respectively perform back pressure follow-up on the inner and outer sides of the metal thin-walled cylinder (12); The ejector rod (3) penetrates the central bottom hole of the lower concave die (2). The ejector rod (3) is used for opening the mold and ejecting the formed metal thin-walled spherical shell (15).

2. The thin-walled curved surface component forming machine tool according to claim 1, wherein The extrusion rod assembly includes an inner extrusion rod (6), a middle cylinder extrusion rod (5) and an outer cylinder extrusion rod (4) which are coaxially nested and slidably matched with each other from inside to outside. The middle cylinder extrusion rod (5) is used to drive the upper concave die (7) to descend and extrude the metal thin-walled cylinder (12). During the deformation process of the metal thin-walled cylinder (12), the internal metal is extruded from the central through hole of the upper concave die (7) into the inner space of the middle cylinder extrusion rod (5), and the external metal is extruded from the plurality of axial through holes of the upper concave die (7) into the outer space of the middle cylinder extrusion rod (5); The inner extrusion rod (6) and the outer cylinder extrusion rod (4) are respectively used for performing back pressure follow-up on the internal metal and the external metal.

3. The thin-walled curved surface component forming machine tool according to claim 2, characterized in that Both the lower concave die (2) and the upper concave die (7) have hemispherical concave cavities; Both end faces of the metal thin-walled cylinder (12) are inner concave conical surfaces (121) sunken inward. The outer edges of the inner concave conical surfaces (121) are tangent to the inner surfaces of the hemispherical concave cavities of the upper concave die (7) and the lower concave die (2); During the extrusion molding process, both ends of the metal thin-walled cylinder (12) are bent along the inner surfaces of the hemispherical concave cavities of the lower concave die (2) and the upper concave die (7).

4. The thin-walled curved surface component forming machine tool according to claim 2, characterized in that The internal metal includes a metal upper rotating part (9) and a metal lower rotating part (11) which are symmetrically arranged up and down. The top of the metal upper rotating part (9) is provided with a positioning column inserted into the central through hole of the upper concave die (7). The bottom of the metal lower rotating part (11) is provided with a positioning groove for positioning with the ejector rod (3).

5. The thin-walled curved surface component forming machine tool according to claim 4, characterized in that, The metal upper rotating part (9) and the metal lower rotating part (11) both include a cylindrical rotating body and a hemispherical body, wherein the cylindrical rotating body is accommodated in the metal thin-walled cylinder (12), and the hemispherical body is accommodated in the upper concave mold (7) or the lower concave mold (2).

6. The thin-walled curved surface component forming machine tool according to claim 2, characterized in that, The external metal comprises a metal cylinder (10) and a plurality of metal columns (8), wherein the metal cylinder (10) is located in the external metal filling space, and the plurality of metal columns (8) are respectively inserted into a plurality of axial through holes of the upper concave mold (7).

7. The thin-walled curved surface component forming machine tool according to claim 2, wherein, The melting points of the inner metal and the outer metal are both lower than the melting point of the metal thin-wall cylinder (12).

8. The thin-walled curved surface component forming machine tool according to claim 7, characterized in that, The inner metal and the outer metal are both aluminum alloys, and the metal thin-walled cylinder (12) is a high-temperature alloy.

9. The thin-walled curved surface component forming machine tool according to any one of claims 2-8, characterized in that, The forming method of the thin-walled curved surface component forming machine tool comprises the following steps: Step S1: The outer cylinder mold (1) and the lower concave mold (2) are installed in place, a metal thin-walled cylinder (12) is placed on the lower concave mold (2), the inner metal filling space and the outer metal filling space are filled with inner metal and outer metal, and the upper concave mold (7) is placed; Step S2: the extrusion rod assembly descends, the middle cylinder extrusion rod (5) presses the upper concave mold (7), and the inner extrusion rod (6) and the outer cylinder extrusion rod (4) make the inner metal filling space and the outer metal filling space in a high pressure state; Step S3: the middle cylinder extrusion rod (5) drives the upper concave die (7) to descend and extrude the metal thin-walled cylinder (12), and the two ends of the metal thin-walled cylinder (12) are bent and deformed in the upper concave die (7) and the lower concave die (2) respectively; as the volume of the internal metal filling space decreases, the internal metal is extruded from the central through hole of the upper concave die (7) into the inner space of the middle cylinder extrusion rod (5); as the volume of the external metal filling space decreases, the external metal is extruded from the multiple axial through holes of the upper concave die (7) into the outer space of the middle cylinder extrusion rod (5). The inner extrusion rod (6) and the outer cylinder extrusion rod (4) respectively perform back pressure follow-up on the inner metal and the outer metal. Step S4: the upper concave mold (7) is lowered to close the mold with the lower concave mold (2), the metal thin-walled cylinder (12) is extruded into a metal thin-walled spherical shell (15), the outer metal is extruded into an outer metal molded component (13), and the inner metal is extruded into an inner metal molded component (14), the inner metal molded component (14) is a connected structure of the inner part of the metal thin-walled spherical shell (15) and the inner part of the middle cylinder extrusion rod (5); Step S5: the extrusion rod assembly rises to release the high pressure; Step S6: The ejector rod (3) lifts the internal metal forming component (14), the metal thin-walled spherical shell (15) and the upper concave mold (7) to the top of the outer cylinder mold (1); Step S7: isolating the portion of the internal metal forming component (14) located outside the metal thin-walled spherical shell (15), and separating the upper concave mold (7); Step S8: heat-treating the metal thin-walled spherical shell (15) containing a portion of the internal metal forming component (14) so that the internal metal forming component (14) melts and flows out of the metal thin-walled spherical shell (15); Step S9: Conduct material science and mechanics analysis on the thin-walled metal spherical shell (15).

10. An artificial intelligence system, characterized in that, Applied to the control of the thin-walled curved surface component forming machine tool as described in Claim 9, the artificial intelligence system includes: A professional artificial intelligence multi-modal large model for forming quality, used for the extrusion path planning of the thin-walled curved surface component forming machine tool; A heat treatment module, used for heat treatment control of the thin-walled metal spherical shell (15); A testing module, used for testing the mechanical properties and material characteristics of the thin-walled metal spherical shell (15); A testing data acquisition module, used for acquiring the testing data of the testing module; A machine learning module, used for perceiving the testing data acquired by the testing data acquisition module and the temperature curve of the heat treatment module, predicting the forming quality from the thin-walled metal cylinder (12) to the thin-walled metal spherical shell (15) through the extrusion simulation module, and controlling the forming process movement of the thin-walled curved surface component forming machine tool and the process temperature of the heat treatment module.

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