99 results about "Composite fabrication" patented technology

The invention discloses an additive and subtractive composite manufacturing process planning method for element runner structure features, which comprises the following steps: S1, analyzing the feature structure of a runner, optimizing the runner for additive and subtractive composite manufacturing, and splitting a multi-runner structure into a plurality of single-runner structures; s2, a machining strategy is set, namely, the single runners are machined one by one in sequence, and a single-runner additive machining strategy is machining along a centroid shaft; s3, developing a collision detection algorithm for flow channel additive and subtractive machining, and circularly solving a machining area segmentation plane by using the collision detection algorithm along a flow channel centroid shaft to obtain a flow channel additive and subtractive alternate area division scheme; s4, generating specific additional material and subtractive material processing procedures; and S5, post-processing to generate a processing code, and importing the processing code into additive and subtractive composite manufacturing equipment for processing. According to the invention, the process planning result without collision and with high processing efficiency can be quickly and efficiently obtained.

A quality control system may include a controller configured to be communicatively coupled with a monitoring assembly including one or more detectors. The controller may implement two or more AI quality control (AIQC) modules associated with two or more process steps for fabricating a composite material, where each of the two or more AIQC modules is associated with a different one of the two or more process steps. A particular AIQC module may receive monitoring data associated with the particular process step for a workpiece, generate quality control data using a particular AI model, and update the particular AI model based on testing data associated with the workpiece from one or more testing tools after at least the particular process step.

The application discloses an arc additive and subtractive composite manufacturing process planning method and system, and specific steps of the method include three-dimensional modeling, slicing and layering, collision interference detection, cutter accessible area correction, interference identification to obtain an initial machining sequence, and process merging optimization to obtain an optimal process planning scheme. Compared with the prior art, the application proposes a cutter accessible area correction method fusing arc additive process characteristics, and realizes initial partitioning of the component without interference. On this basis, process merging optimization is carried out with the optimization target of minimizing the number of additive and subtractive process alternations, and a process planning scheme satisfying the interference-free constraint is obtained. Compared with the prior art, the application effectively solves the technical problems of poor process planning adaptability, process redundancy, high alternation cost, single manufacturing process data acquisition, and lack of real-time monitoring and intelligent control in the arc additive and subtractive composite manufacturing.

The present application relates to the field of intelligent manufacturing, and more particularly to a distributed workshop scheduling method for additive and subtractive hybrid manufacturing. The present application provides a two-stage algorithm, including a batching stage and a scheduling stage. In the batching stage, a balanced height distribution greedy algorithm with two-dimensional interval constraints and space block left-down placement strategy is designed to batch all the workpieces to be produced, determine the workpiece batches, and take the obtained batches as the coding information of the scheduling stage algorithm; in the scheduling stage, a non-dominated sorting genetic algorithm-II with excellent degree strategy driven variable neighborhood search is designed to perform additive and subtractive hybrid manufacturing scheduling, so as to achieve the optimization goal of minimizing the maximum completion time and the total production cost. The present application can realize additive and subtractive hybrid manufacturing scheduling, better utilize resources, maximize production efficiency, and reduce production cost through collaborative work of multiple workshops and load dispersion.

The invention discloses a frozen sand mold multi-mode additive and subtractive material in-situ composite manufacturing method, and belongs to the technical field of additive and subtractive material composite manufacturing. According to the method, on the basis of the water-ice phase change reversible characteristic of the frozen sand mold, a mixture of a sand mold material and water is frozen at low temperature to form an ice crystal network framework, precise material reduction machining is conducted on the frozen sand mold through five-axis numerical control equipment, and laser cladding, magnetic field oriented deposition and hot pressing sintering multi-mode material increase technologies are combined; and in-situ additive forming is achieved on the surface of the cavity after material reduction. By regulating and controlling the temperature gradient or the magnetic field intensity, a middle combination or three-dimensional interlocking structure of the material adding layer and the ice sand base body is achieved, finally sand materials are recycled through the gradient unfreezing and separating technology, and the material utilization rate is increased. The precision limitation of traditional sand mold casting is broken through, the manufacturing cost is reduced compared with a traditional additive and subtractive process, and the method is particularly suitable for the precision manufacturing field of aerospace complex inner runner components, new energy automobile integrated castings and the like.

This invention belongs to the field of additive-subtractive composite manufacturing technology, and discloses a five-axis linkage additive-subtractive composite machine tool and control system. The machine bed base assembly has left and right guide rail seats symmetrically fixed on both sides of its top. The worktable is fixed in the middle of the machine bed between the two guide rail seats. An integral crossbeam is mounted across the top surface of the left and right guide rail seats and can move linearly along the X-axis. Two independent machining units are mounted in parallel along the Y-axis on the integral crossbeam: the subtractive side crossbeam slide plate carries a subtractive slide block and a subtractive electric spindle actuator, and the additive side crossbeam slide plate carries an additive Z-axis slide table and a double-swing additive head. The worktable is divided along the X-axis into a subtractive-specific machining area, a composite machining area, and an additive-specific machining area. The two machining units can operate independently in their respective dedicated areas, or enter the composite machining area at different times to collaboratively complete the additive-subtractive composite machining. This invention combines high structural rigidity with machining flexibility, avoids secondary workpiece clamping errors, and significantly improves machining efficiency and accuracy.

The invention belongs to the technical field of metal explosive cladding manufacturing, and discloses an explosive welding initiating explosive forming mold, an initiating explosive column and an explosive welding method. The mold comprises a pipe body and a cone assembled in the pipe body. The top end of the cone is upward, and a gap is reserved between the bottom face of the cone and the lower end face of the tube body, so that an upper columnar charging cavity and a lower conical energy gathering cavity are formed in the tube body. By means of the simple split design, traditional manual explosive pit digging operation is converted into a standardized process, the energy-gathered initiating explosive column with the highly-consistent shape, size and explosive loading amount is prepared, personal errors are thoroughly eliminated, and repeatability of initiation energy is guaranteed. And meanwhile, the bottom energy gathering cavity structure is beneficial to improving the energy utilization rate, and is particularly suitable for explosive welding of the multi-layer metal plate with the medium thickness. The device has the remarkable technical advantages of simple structure, low cost, time-saving operation, safety, high efficiency, batch production and the like.

The invention relates to the technical field of automobile roof manufacturing, in particular to an automobile roof material composite manufacturing process which comprises a workbench, a gluing roller set and an extrusion roller set, the workbench is used for laying non-woven fabric and comprises symmetrically-arranged main plates, and the opposite sides of the main plates on the two sides are provided with auxiliary plates hinged to the main plates; the gluing roller set is located above the auxiliary plate, the extrusion roller set is arranged below the auxiliary plate, the extrusion roller set and the gluing roller set are correspondingly arranged, the extrusion roller set comprises a first extrusion roller and a second extrusion roller, the first extrusion roller and the second extrusion roller are arranged in a relative rotation mode, and the PU plate and the coating layer are extruded and compounded through the first extrusion roller and the second extrusion roller to form a ceiling base material. Traditional manual stacking is replaced with an automatic means, accurate positioning and efficient compounding of multiple layers of materials are achieved, and therefore the production efficiency is improved, the good attaching degree between the layers of materials is guaranteed, and the stability of the product quality is guaranteed.

The invention provides a high-performance thermoplastic composite material box section structure and a composite manufacturing process thereof. The continuous fiber reinforced thermoplastic resin is used for preparing the box section structure for the first time, the box section structure can be guaranteed to have good impact strength while weight reduction is achieved, and a new thought is provided for preparation of the box section structure. Meanwhile, due to the characteristic that the thermoplastic resin can be repeatedly processed, the connection mode between the inner skin and the outer skin has multiple possibilities, the problems of complex laying, mutual connection and time consumption of repeated curing molding of thermosetting materials are solved, and the manufacturing efficiency is further improved.

The application belongs to copper alloy material for laser additive manufacturing, and particularly relates to a kind of copper plate material for laser composite manufacturing precision forging machine impact resistance wear resistance and preparation method thereof.Copper alloy material is added solid lubricant Ni-M O S2 and wear-resistant hard phase TiB2 copper-based alloy powder, including the following mass percentage components: Ni-M O S2 powder 1%-10%, TiB2 powder 5%-15%, the balance is copper-based alloy powder; Copper-based alloy powder is including the following mass percentage components: 5%-12% Ni, 9%-10% Sn, 4%-5% Fe, 0.2%-1% Al, 0.3%-0.8% Co, 1.2%-5.5% Ti, the balance is copper.The application is cladded after adopting coating material to the surface of base material, with excellent impact resistance, the wear and tear amount within the service life is equal to imported, but the overall manufacturing cost is far lower than imported copper plate;Using composite manufacturing method, while guaranteeing service life, it can reduce enterprise production cost.

A kind of composite manufacturing method of blade leading edge titanium alloy reinforcing edge hot creep and diffusion connection, titanium alloy reinforcing edge upper and lower thin-walled prefabricated parts are respectively prepared by the way of cutting plate material, titanium alloy reinforcing edge middle layer block prefabricated part is prepared by the way of cutting titanium alloy block material;After being assembled, the upper thin-walled prefabricated part, the core mold, the middle layer block prefabricated part and the lower thin-walled prefabricated part are arranged between the upper and lower molds, and the prefabricated part is bent and attached to the mold by cold pressing, and the titanium alloy reinforcing edge is obtained by composite forming after die closing.The composite method of hot creep and diffusion connection after piece cold pressing is used to process leading edge reinforcing edge once, which can significantly improve the forming efficiency and material utilization rate, shorten the processing cycle, and at the same time, the size precision and forming quality of reinforcing edge can be well controlled.

A quality control system may include a controller configured to be communicatively coupled with a monitoring assembly including one or more detectors. The controller may implement two or more artificial intelligence quality control (AIQC) modules associated with two or more process steps for fabricating a composite material, where each of the two or more AIQC modules is associated with a different one of the two or more process steps. A particular AIQC module may receive monitoring data associated with the particular process step for a workpiece, generate quality control data using a particular AI model, and update the particular AI model based on testing data associated with the workpiece from one or more testing tools after at least the particular process step.

This invention relates to an additive-subtractive composite manufacturing equipment for producing graded functional parts. The equipment comprises two powder feeder assemblies mounted on a process housing, with a laser output position located between them. A powder scraping mechanism and a moving mechanism are located at the upper end of the frame. The powder scraping mechanism is situated in the processing area on the upper table of the frame, and a worktable is housed within a worktable through-hole on the worktable surface. A sealed box is located within the frame, containing a worktable lifting mechanism. The worktable is raised and lowered via this mechanism. A flip-type powder guide sleeve is located on the underside of the powder feeder assembly closer to the moving mechanism, while a fixed powder guide sleeve is located on the underside of the powder feeder assembly furthest from the moving mechanism. After the flip-type powder guide sleeve is flipped open, a cutting device is driven by the moving mechanism to enter the area above the processing zone. This invention enables alternating additive and subtractive processes to complete the additive-subtractive composite machining of parts.

A multifunctional additive-subtractive composite manufacturing apparatus and its method of use are disclosed. The apparatus includes a first-arm robot, a welding torch, a second-arm robot, an additive-subtractive composite processing mechanism, and an additive manufacturing substrate. The additive-subtractive composite processing mechanism includes a frame, three sets of hammer milling composite processing equipment, and two sets of equipment attitude adjustment components. The hammer milling composite processing equipment includes an outer protective cylinder, an elastic coil, an inner isolation cylinder, an iron core hammer rod, a milling drive motor, a quick tool changer, a hammer head, a milling cutter, an electrical control module, a buffer spring, a buffer washer, a hammer rod positioning screw, a laser displacement sensor, a shifting slip ring, and a cam paddle. This invention realizes the combination of additive, subtractive, and additive manufacturing processes, and can perform additive manufacturing of metal components with three-dimensional hammering composite processing, additive manufacturing with cold and hot hammering composite processing, and additive manufacturing with end-face hammering and side milling composite processing. It features good controllability, good processing uniformity, high processing accuracy, and high processing stability.

The invention discloses an additive and subtractive composite manufacturing online monitoring method, which comprises the following steps of: acquiring strain characteristics in an additive and subtractive process by utilizing a monitoring and feedback control system comprising a substrate, a strain gauge, a strain collector, a data processing computer, an additive and subtractive composite forming control system and a motion system; according to the method, real-time monitoring of substrate deformation in the additive and subtractive composite manufacturing process is achieved, whether process adjustment of additive and subtractive composite manufacturing needs to be carried out or not is judged by comparing strain signals with strain signal preset values in a process adjustment database, feedback control is achieved, the local large strain phenomenon in the additive and subtractive manufacturing process can be found in time, and the production efficiency is improved. The method has the advantages of preventing crack defects, monitoring the state of the cutter, optimizing the roughness and dimensional precision of the machined surface, solving the problem of part machining failure caused by hot cracks or low precision in additive and subtractive composite manufacturing, and having wide application prospects and remarkable technical advantages.

The application discloses a powder laying type multi-laser additive and subtractive composite manufacturing method, which comprises the following steps: forming a part shape contour on powder by using a forming laser; performing in-situ scanning on the part shape contour by using an ultrafast laser; according to a pre-tested subtractive thickness h, controlling the overall lifting of a substrate by h, and lifting the position where the part shape is not cut to the effective focal length range of the ultrafast laser; after one or more times of scanning on the current layer by using the ultrafast laser, the bottom lifting mechanism of the forming bin drives the substrate to be lifted by h again, and the part shape contour is subtracted by using the ultrafast laser again, and the above steps are repeated until the total height h of the substrate is greater than the additive height H t , and the subtractive process is ended; the bottom lifting mechanism of the forming bin drives the substrate to be lowered by h again n +H, the powder scraper lays the metal powder with the thickness of H on the substrate, and the additive process of the next layer is performed until the whole part printing process is ended. The application achieves the purpose of the multi-laser additive and subtractive composite manufacturing for compensating the height.

The utility model discloses a copper clad steel strip hot compound device relates to the technical field of hot compound manufacturing of composite board, in order to solve the problem of the performance of composite board caused by oxide formation, the device includes the protective atmosphere room, and the both ends of protective atmosphere room are provided with the open feed inlet and discharge port respectively, and the feed inlet is used to provide copper band and preheated steel strip, and the discharge port is equipped with the hot rolling roller group for hot pressing copper band and steel strip, the inner chamber of protective atmosphere room is communicated with the gas pipe group, and the gas pipe group is used for the supplementary ammonia decomposition gas and nitrogen into the protective atmosphere room, and the cooling water pipe group is located in the inner chamber of protective atmosphere room, and the circulating cooling water is passed into the cooling water pipe group, so setting, can effectively isolate oxygen in air, avoids the oxidation reaction of the surface of preheated steel strip in the composite process, thereby the performance of composite board is improved significantly.

The application provides a large heat dissipation structure integrated manufacturing tool and method, and belongs to the field of laser processing manufacturing. According to the size of a laser selective melting forming device, under the premise of ensuring the integrity of a special structure of a part, a region with low laser welding difficulty is selected for cutting, and then segmented laser selective melting forming manufacturing is carried out, and then laser welding is carried out, so that the composite manufacturing of a large-size part is realized through multiple laser processes. In the laser selective melting forming process, the welding area is reserved with an excess amount and an arc starting and collecting plate is designed, the excess amount is removed after welding, and the consistency of the weld quality is ensured. In the welding process, the welding gun posture and welding parameters are optimized, the contamination of spatter on the gun head is improved, and the stability of the welding molten pool is improved. After the laser selective melting forming and the laser welding, heat treatment is carried out on the part, a special tool is used, welding thermal stress is eliminated, and the deformation of the part in the heat treatment process is reduced.

The application belongs to the field of additive manufacturing, and specifically discloses a 3D printing and mechanical processing composite manufacturing system and a workpiece manufacturing method. The composite manufacturing system comprises a servo turntable, a first mechanical arm, an additive manufacturing module integrated at the tail end of the first mechanical arm for forming a solid member on the servo turntable, the additive manufacturing module comprising a direct writing forming nozzle and at least one fused deposition forming nozzle, a second mechanical arm, a subtractive and detection module integrated at the tail end of the second mechanical arm for 3D scanning and milling processing of the solid member, the subtractive and detection module comprising a 3D scanning device and a mechanical milling device, and a control module electrically connected with the servo turntable, the first mechanical arm, the additive manufacturing module, the second mechanical arm and the subtractive and detection module. The application can solve the technical problem that heat-sensitive non-metallic members are difficult to balance between efficient forming and high-precision processing, effectively improves the functional integration level of the equipment, and simplifies the manufacturing process of multifunctional members.

The application discloses a kind of complex inner flow channel of engine cylinder body additive-subtractive composite manufacturing method, comprising the following steps, step 1, by additive manufacturing, engine cylinder body is printed to the preset height of complex inner flow channel, the printing work of base body is completed;Step 2, carry out subtractive work on base body, obtain one part structure of complex inner flow channel;Step 3, independently carry out additive-subtractive composite manufacturing outside cylinder body, another part structure of complex inner flow channel is manufactured into shape;Step 4, the one part structure of complex inner flow channel in step 2 is aligned with the another part structure of complex inner flow channel in step 3, welding is completed to manufacture the complex inner flow channel of engine cylinder body.Achieve different flow channel manufacturing without changing additive manufacturing direction, and the purpose that inner surface can be complete inner surface processing.

The invention discloses a composite manufacturing method based on interlayer alternate additive polishing, and belongs to the technical field of additive manufacturing and surface finishing composite processes, the method comprises the following steps: sequentially depositing a kth layer and a (k + 1) th layer of additive layer on a substrate or a formed body, and carrying out in-situ polishing treatment on the (k + 1) th layer of exposed surface, by controlling the quantitative relation between the polishing depth and the thickness of an additional material layer, the ratio of the additional material to the polishing energy density and the included angle of a scanning path, the next additional material layer is preheated in combination with polishing waste heat, the interlayer temperature gradient is controlled, the steps are executed circularly till a workpiece is completed, and meanwhile a polishing skipping mechanism is arranged for a supporting structure layer and an initial layer; and the polishing energy is adaptively adjusted through real-time monitoring of the surface roughness. According to the method, the limitation that traditional additive manufacturing and post-treatment are disjointed is broken through, interlayer defect real-time repair and residual stress regulation are achieved, the surface quality and density of the component can be remarkably improved, the surface roughness is reduced, and the manufacturing efficiency is improved.

This invention relates to the field of high-temperature alloy additive and subtractive manufacturing technology, and more specifically to a method and system for additive and subtractive manufacturing allowance planning and code generation based on deformation stress prediction. The method includes the following steps: S1, acquiring deformation distribution data, key point deformation data, residual stress distribution data, and residual stress layer thickness data of the component during high-temperature alloy additive manufacturing; S2, setting an accuracy threshold to identify out-of-tolerance areas, and determining the removal allowance based on the stress layer thickness; S3, establishing an optimization model to minimize deformation and stress layer thickness, and solving for the dynamic sequence of additive parameters in the height direction; S4, generating a basic subtractive manufacturing path, adjusting cutting parameters, and achieving a smooth transition; S5, implementing additive and subtractive manufacturing based on the dynamic sequence and code. This invention achieves minimized control of component deformation and residual stress, and improves processing accuracy and performance by predicting deformation and residual stress data and dynamically optimizing additive and subtractive manufacturing process parameters and processing paths.

A quality control system may include a controller configured to be communicatively coupled with a monitoring assembly including one or more detectors. The controller may implement two or more artificial intelligence quality control (AIQC) modules associated with two or more process steps for fabricating a composite material, where each of the two or more AIQC modules is associated with a different one of the two or more process steps. A particular AIQC module may receive monitoring data associated with the particular process step for a workpiece, generate quality control data using a particular AI model, and update the particular AI model based on testing data associated with the workpiece from one or more testing tools after at least the particular process step.

The invention discloses modularized quick-change type all-solid-phase additive-equal-subtractive integrated machining equipment and method, and relates to the field of additive-equal-subtractive composite manufacturing, and the modularized quick-change type all-solid-phase additive-equal-subtractive integrated machining equipment comprises a machine tool body, a quick tool changing device, an execution assembly and a wire feeding device. The quick tool changing device is installed on one side of the machine tool body. The execution assembly comprises a spindle and a cooling device, the spindle is connected to the machine tool body and vertically moves relative to the machine tool body, and the cooling device is arranged on the back face of the spindle. The wire feeding device is located on the other side of the machine tool body. An XYZ-direction moving platform and a double-shaft rotary table are arranged on the machine tool body. Solid-phase additive manufacturing, solid-phase material modification treatment and subtractive forming functions are integrated into one device, full-process and full-solid-phase integrated manufacturing is achieved, the mechanical property and forming precision of parts can be remarkably improved, and the device is particularly suitable for integrated, high-performance, low-cost and high-efficiency manufacturing scenes and has wide application prospects. And the application of non-weldable materials such as high-strength aluminum alloy in the high-end manufacturing field such as aerospace can be effectively expanded.

The invention relates to the technical field of functional glass materials and composite manufacturing, in particular to magnetic glass as well as a preparation method and application thereof. The preparation method of the magnetic glass comprises the following steps: S1, glass pretreatment; s2, sealing the bottom of the glass; s3, substrate pretreatment; s4, electrolyte preparation and electro-deposition, wherein electrolyte comprises magnetic metal salt, a complexing agent and a dispersing agent, and electro-deposition is conducted through a three-electrode system; s5, post-treatment: carrying out heat treatment and surface modification; s6, bonding a magnetic film; and S7, an MI process is carried out, wherein a texture mold is adopted, and a micro-nano imprinting technology is adopted. On the basis of combination of electro-deposition and an MI process, the magnetic glass with a large area and a uniform magnetic adsorption function is prepared, and meanwhile it is ensured that the sealing performance, the heat preservation performance and the structural strength of a door body are not affected.

The invention belongs to the technical field of mechanical part composite manufacturing, and provides a metal and engineering plastic composite method which comprises the following steps: providing a metal piece; providing an engineering plastic part; coating an adhesive on the surface of the combination part and / or the surface of the main body part; the threaded connecting part and the threaded hole are screwed and pre-fixed into an integrated assembly; and the edge of the joint part is rolled and riveted. According to the method, a special adhesive is coated, uniform pre-tightening force is generated through screw-thread fit screwing, so that the bonding surfaces of the metal part and the engineering plastic part are tightly attached, a mechanical interlocking foundation is established, and finally, the edge of the metal part is plastically deformed through a rolling riveting technology, and the engineering plastic part is completely wrapped with the edge of the metal part. Through the synergistic effect of all the composite technologies, the production cost and the equipment threshold can be remarkably reduced while the bonding strength and the long-term stability of the bonding surface are ensured, and the method is particularly suitable for multi-variety and small-batch manufacturing of parts such as high-performance valve clacks which have strict requirements for reliability and economical efficiency.

The application provides a composite manufacturing method for printing functional devices in a space environment, and the method comprises the following steps: slicing, moving a printing platform to a target position, supplying paving material, light curing forming, performing microstructure processing on a green ceramic substrate based on laser engraving, filling metal conductive material, controlling the printing platform to descend by one layer thickness, returning to step 2, and performing composite multi-material fine printing of the next printing layer, and continuously circulating in this way, so as to finally form a functional device with a complex structure. The application provides a new composite manufacturing method combining a light curing process, a laser manufacturing process and an inkjet / extrusion process, solves the printing problem of mixed manufacturing functional devices in a space environment, realizes high-precision on-orbit manufacturing of complex functional devices in a microgravity environment, and finally meets the demand of on-orbit application.

The application provides an electric heating glass micro-nano additive-subtractive composite manufacturing method, which comprises the following steps: pretreating the surface of a glass substrate, depositing a copper film on the pretreated glass substrate to prepare a copper-clad glass substrate; printing a designed electrode pattern on the copper-clad glass substrate by taking photoresist as a mask pattern forming material; performing solidification treatment after printing; etching the copper film by taking the solidified photoresist pattern as a mask to obtain a designed mask electrode pattern; removing the photoresist, cleaning and drying the copper-clad glass substrate; taking the etched copper conductive pattern as a seed layer to plate a metal layer on the seed layer; performing post-treatment on the formed transparent electric heating glass after plating the metal layer; and coating a protective layer on the surface of the post-treated transparent electric heating glass. The application can realize low-cost, high-efficiency and batch manufacturing of large-size and high-performance metal mesh transparent electric heating glass.

The application discloses a composite part additive-subtractive forming method and equipment, and relates to the technical field of composite part composite manufacturing. The forming method comprises the following steps: step 1, shape feature decomposition of target forming; step 2, determination of forming strategies of each feature obtained by the decomposition in step 1; step 3, determination of material deformation and material allowance according to part performance and process; step 4, determination of process parameters and forming paths of each scheme; and step 5, execution of numerical control codes by the composite part additive-subtractive forming device to complete part forming. The forming method is matched with the forming equipment of the application, additive manufacturing is mainly used, and traditional manufacturing is used as auxiliary, so that the limit of current single material and single forming process in aspects of forming performance, forming precision and forming efficiency is broken, and the forming method is suitable for in-situ synchronous composite forming of multiple materials and multiple processes.

This invention discloses a method for generating and controlling transition paths in additive and subtractive manufacturing processes, comprising: acquiring a workpiece model and determining the timing of additive and subtractive alternation; extracting the contour features of the alternating interface slices; calculating the maximum allowable overhang angle based on process parameters and determining whether an overhang structure is formed; performing spatial mapping analysis on the blank allowance after subtraction, and calculating the number of transition support layers and generating transition support path segments when the local blank allowance is insufficient to support the molten pool; generating an interface preheating scanning path when there is a risk of thermal stress concentration; and finally reconstructing the original additive and subtractive machining path and generating machining code. Using this invention, without changing the part design model, smooth process transitions are achieved through path-level dynamic insertion of transition segments, thereby improving interface bonding quality and forming stability.