34194 results about "Machining" patented technology

The invention relates to the technical field of intelligent manufacturing and numerical control machining control, and discloses a machine tool dynamic characteristic sensing and intelligent machining control method and system based on a knowledge graph and a large model, and the method comprises the following steps: extracting frequency domain parameters through a vibration sensor, obtaining vibration displacement in combination with laser displacement, and comparing the vibration displacement with modal data to construct a graph; processing parameters and displacement are synchronously sampled, time sequence characteristics are extracted to generate tensors, dynamic characteristics are predicted and corrected, and frequency response adjustment rotating speed is matched to generate optimized track control parameters which are converted into G code instructions. According to the method, a dynamic characteristic map is constructed by fusing vibration signals and displacement, a sliding window synchronizes processing parameters and vibration data, LSTM extracts joint characteristics, GRU predicts rigidity and damping ratio, an attention mechanism dynamically corrects weight, characteristic coupling analysis and prediction precision is improved, nonlinear modeling captures dominant frequency offset and harmonic distribution, response speed is enhanced, and the method has the advantages of being high in precision and high in precision. Cutting vibration is inhibited, and the process stability is guaranteed.

The invention relates to the technical field of metal forge piece machining, in particular to an irregular metal forge piece heat treatment method and system.The irregular metal forge piece heat treatment method comprises the steps that firstly, temperature compensation partitions are divided according to geometrical characteristics, and stepped preheating is implemented to establish a uniform basic temperature field; then, the heat preservation time of each subarea is independently regulated and controlled in the austenitizing stage, and sufficient transformation of a thick-wall area structure and control over the grain size of a thin-wall area are both considered; in the quenching process, partition strength adjustment is carried out based on a preset cooling map, and cooling parameters are dynamically optimized through real-time feedback; and finally, according to the residual stress distribution, carrying out partition stepped tempering. The heating and cooling uniformity is remarkably improved through partition dynamic temperature management, and the structure difference and thermal stress concentration caused by section sudden change are effectively inhibited; the microstructure is ensured to be uniform and stable through austenitizing control; the hardenability and the deformation resistance are balanced through a differential cooling strategy; and directional reduction of residual stress is achieved through an intelligent tempering mechanism, and the cracking risk is greatly reduced while the comprehensive mechanical property is improved.

Disclosed in the present utility model is a die-cast part machining and grinding device, comprising a machining table. Electric slide rails are mounted on two sides of the upper surface of the machining table; electric sliding blocks are slidably arranged on the electric slide rails; a mounting frame is connected to the top ends of the electric sliding blocks; and a transmission displacement assembly is mounted in the middle of the upper portion of the mounting frame. According to the die-cast part machining and grinding device, when a die-cast part on a bearing table is limited, personnel can first adjust the vertical displacement position of the mounting frame by means of the cooperation between the electric slide rails and the electric sliding blocks, then use the transmission displacement assembly to adjust the transverse displacement position of a grinding piece I so that the grinding piece I can be located above an area to be ground of the die-cast part, and then start a motor II, to make two transmission lead screws I to rotate synchronously by means of the transmission of synchronous wheels and synchronous belts. Since threads of the two transmission lead screws I have opposite preset directions, lead screw slide sleeves II acting with respective transmission lead screws I can move in opposite directions in a transmission state.

The invention relates to the field of wafer processing, and discloses a wafer grinding and polishing adjustment control system based on a tension sensor, which comprises a processing pressure acquisition module for acquiring the gravity of a heavy object, acquiring the tension of an electric cylinder in real time based on the tension sensor, calculating the processing pressure through a formula, and acquiring grinding state parameters of a wafer in real time; the processing pressure stability analysis module comprises a first analysis unit and a second analysis unit; the first analysis unit is used for calculating the accumulated variable quantity of the processing pressure in a preset monitoring period, comparing the accumulated variable quantity with a change threshold value and sending out an alarm signal; the second analysis unit inputs the grinding state parameters into a grinding state model to analyze a grinding state value, and reversely evaluates the state of the grinding disc; the adjusting control module adjusts the pulling force of the electric cylinder based on the first analysis unit and judges whether the grinding disc is replaced based on the second analysis unit. Accurate monitoring and stability control of the machining pressure are achieved, the state of the grinding disc can be effectively evaluated, and the wafer grinding and polishing quality and efficiency are improved.

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 2100MPa-grade stranded wire and a manufacturing method of the high-strength complex-phase hot-rolled wire rod, after a C-Si-Mn-Cr-Mo high-carbon component system is rolled and spun into a wire rod, the wire rod is subjected to online molten salt strong quenching isothermal treatment, so that the wire rod is firstly subjected to front-section molten salt treatment and is cooled at a cooling speed of greater than or equal to 33 DEG C / s, and enters a bainite phase region from an austenite state; the method comprises the following steps: firstly, carrying out first-stage molten salt treatment to promote transformation of austenite into bainite, then carrying out later-stage molten salt treatment to form a structure mainly comprising bainite, carrying out isothermal tempering on the structure, reserving part of untransformed retained austenite, and finally, carrying out roller way slow cooling to promote transformation of the untransformed retained austenite into martensite, and carrying out tempering, the microstructure of the hot-rolled wire rod comprises a complex-phase structure composed of tempered bainite and tempered martensite, the tensile strength of the hot-rolled wire rod can reach 1435-1485 MPa, the percentage reduction of area of the hot-rolled wire rod is 31%-36%, off-line heat treatment of follow-up machining is avoided, and the risk of wire breakage is reduced.

The invention relates to the technical field of machining, in particular to a flexible clamp for turning a variable-diameter thin-wall cylinder component and a turning method. The flexible clamp comprises a supporting mechanism and a flexible supporting clamp mechanism which are detachably connected, the supporting mechanism comprises a supporting rod, the supporting rod is detachably connected with the flexible supporting clamp mechanism, and the flexible supporting clamp mechanism comprises a plurality of first supporting assemblies arranged in the circumferential direction. The flexible supporting clamp mechanism can be inserted into the variable-diameter cylinder section of the variable-diameter thin-wall cylinder component in the axial direction of the variable-diameter thin-wall cylinder component, and the first supporting assembly is adjusted to extend in the radial direction so that the first supporting assembly can abut against the inner wall of the variable-diameter cylinder section. The flexible supporting clamp mechanism can effectively avoid workpiece deformation caused by lateral component force, and the flexibility of the flexible clamp is improved. In the machining process, the elastic deformation and vibration of the barrel are controlled within a very small range, and the machining precision is remarkably improved.

The invention discloses an adaptability improving system and method based on a new energy aluminum alloy part manufacturing and machining environment, and relates to the technical field of new energy aluminum alloy part manufacturing. The system comprises the following components: a data acquisition module, a digital twin model construction module, a data transmission and processing module, a quality tracing and analysis module and a decision and optimization module. According to the new energy aluminum alloy part manufacturing and processing full-process digital twinborn model, the processing equipment operation parameters, the part processing process data and the processing environment data are comprehensively collected, and the new energy aluminum alloy part manufacturing and processing full-process digital twinborn model is constructed, so that the processing process is accurately simulated and monitored in real time; the system can quickly position environmental factors and processing links which cause quality problems, and generates a processing technology optimization scheme in combination with a decision and optimization module, and the adaptive capacity of new energy aluminum alloy part manufacturing and processing to environmental changes is remarkably improved through a series of measures.

The invention relates to the technical field of machine tool cutter wear monitoring, and particularly provides an integrated multi-dimensional data monitoring system and a monitoring method.The integrated multi-dimensional data monitoring system comprises a multi-dimensional data acquisition module which can acquire multi-dimensional data of the working state of a cutter in real time; the feature information layer and the intelligent analysis layer comprise a multi-source data fusion module, an abnormal state recognition module, a residual life prediction module and a self-adaptive learning module; the decision execution layer comprises an early warning feedback module, a parameter optimization suggestion module and an intervention control module; the knowledge base system comprises a case base module, a rule base module and a model base module, different physical quantities are collected through the multi-dimensional data collection module, full-dimensional sensing of the state of the cutter is achieved in combination with machining features, material information and environment data, multi-sensor collection, physical model construction, feature information integration and intelligent algorithm analysis are combined, and the machining accuracy of the cutter is improved. And comprehensive, real-time and accurate monitoring of various abnormal states of the machine tool cutter is realized.

The invention discloses a brittle material laser cutting thermal stress control method and system, and the method comprises the steps: obtaining real-time temperature distribution through infrared thermal imaging, combining finite element analysis and material characteristic dynamic data, constructing a thermal stress and fracture relation model, carrying out the iterative calculation of a thermal stress out-of-control threshold through a lambda algorithm, and determining a regulation boundary condition. According to the boundary condition, laser parameters are optimized, synchronous cooling airflow is introduced, the temperature gradient is dynamically controlled through an airflow pressure adjusting algorithm, historical data are processed through a convolutional neural network, the optimal laser parameter combination is predicted, in the cutting process, the microcrack diffusion state is monitored in real time, and auxiliary technological parameters are finely adjusted when necessary. The problem of fracture caused by out-of-control thermal stress in laser cutting of the brittle material is effectively solved, the cutting quality and efficiency are improved, and a new technical scheme is provided for precision machining of the brittle material.

The invention discloses a welding fixture for machining a turbine shell, which belongs to the technical field of turbocharger machining and comprises a turntable and adjustable welding clamping mechanisms uniformly distributed in the circumferential direction of the turntable, the adjustable welding clamping mechanism comprises a fixed rack, a movable machine base, an inner supporting type clamping assembly for clamping the turbine shell, an adjustable limiting assembly for positioning the end face of an air inlet of the turbine shell and an adjustable shifting assembly for pushing the turbine shell to rotate. According to the welding clamp for machining the turbine shell, automatic and rapid positioning of the turbine shell can be achieved so that a rocker arm can be welded conveniently, and the welding clamp can adapt to turbine shells of different models.

The invention discloses a robot welding pipeline flange displacement special clamp, and relates to the technical field of ship manufacturing equipment, the clamp comprises a processing table, a welding mechanical arm, a placing mechanism, two groups of pipeline clamping mechanisms, two groups of flange fixing mechanisms, a traction mechanism, a rotating platform and three screw rod sliding tables; the placing mechanism is slidably mounted in the middle of the machining table through the rotating platform, and the two pipeline clamping mechanisms are symmetrically slidably mounted on the two sides of the placing mechanism and can synchronously move and clamp pipelines. The two flange fixing mechanisms are symmetrically arranged on the two sides of the containing mechanism and horizontally move through a lead screw sliding table. The traction mechanism is connected with the machining table through a lead screw sliding table and can lock / unlock the rotating platform and drive the containing mechanism to move. The welding mechanical arm is in linkage with the clamp and can conduct welding along the butt joint axis. Multi-degree-of-freedom posture adjustment of a pipeline and a flange can be achieved, a straight pipe and a 0-90-degree bent pipe are matched, it is guaranteed that welding is in a horizontal butt joint state all the time, and the welding quality and efficiency are improved.

The invention belongs to the technical field of BIM (Building Information Modeling), and particularly relates to a curved surface composite truss design and construction integrated method and device based on the BIM technology. The method comprises the following steps: considering four structural schemes for a building facade, generating a corresponding parameterized structural topology and a three-dimensional structural line model, adding a load, calculating, analyzing and optimizing a cross section, and generating four structural calculation models and building scheme models; the building space effects and the structure force transmission efficiency of the four structure schemes are compared, and the optimal one is selected as an implementation scheme; and forming a full-professional BIM model according to the selected implementation scheme. Building datamation is achieved through the BIM technology, digital delivery of design results is achieved, the link of two-dimensional plotting is reduced, steel structure deepening is further conducted through the BIM model in the construction stage, visual deduction is conducted on key procedures such as steel structure machining, assembling and hoisting, and digital construction is achieved.

The invention provides a control method and system for improving the blanking precision of an injection mold, and relates to the technical field of injection mold machining. The method comprises the steps that temperature, pressure and displacement multi-source data in the die blanking process are collected in real time; calculating a dynamic deformation compensation coefficient and a blanking stress balance factor based on the data, and respectively representing a material nonlinear deformation trend and a cutting edge stress distribution difference; dynamically adjusting blanking speed, pressure gradient and die temperature field parameters according to calculation results; and through a closed-loop feedback mechanism, a control model is iteratively optimized in combination with a workpiece size error, a die wear compensation step is additionally set, and a stress balance factor is dynamically corrected based on the accumulated blanking times and the cutting edge roughness. The system comprises a multi-source data acquisition module, a dynamic parameter calculation module, a self-adaptive control module and a closed-loop feedback module, and full-process cooperative control is realized. Through multi-physics field data coupling analysis, intelligent parameter optimization and a closed-loop feedback mechanism, the problems of insufficient deformation compensation and out-of-control stress balance in a traditional method are solved.

The invention discloses a full-automatic welding device for automobile brake machining, which belongs to the technical field of brake welding and comprises a welding mechanism for welding a brake pad inner ring and a brake pad outer ring. The welding mechanism is provided with a front feeding mechanism used for feeding the inner rings of the brake pads and a rear feeding mechanism used for feeding the outer rings of the brake pads. A full-automatic feeding mechanism, a full-automatic clamping mechanism, a full-automatic welding mechanism and a full-automatic discharging mechanism are adopted, continuous welding operation of the inner ring and the outer ring of the brake pad is achieved through rotating disc type indexing conveying, manual intervention is remarkably reduced, the production efficiency is improved, and the large-batch production requirement is met; through cooperation of the cambered surface block and the clamping module driven by the spring, automatic clamping and loosening of the inner ring and the outer ring of the brake pad are achieved, it is guaranteed that a workpiece is accurately positioned in the welding process, displacement or loosening is avoided, and therefore the welding precision and the product consistency are improved.

The invention relates to the field of machining, and discloses an adjustable wood-working machining multifunctional clamping and positioning method which comprises the following steps: S1, acquiring three-dimensional space position information of a workpiece through laser scanning, and generating point cloud data containing a texture trend; s2, analyzing geometrical characteristics and mechanical characteristics of the workpiece based on the point cloud data, generating a clamping position distribution instruction and matching a clamping mode; s3, a grading pressure threshold value is set according to the wood density grade, and cooperative force application control of multiple clamping arms is dynamically adjusted based on distributed pressure feedback; and S4, fusing the vibration spectrum and the visual displacement data to monitor the position offset of the workpiece in real time. Through a dynamic pressure balancing strategy, according to wood density grading, pressure threshold values are set, gradient pressure control is conducted on hardwood, slope changes are limited, pre-pressing relaxation time is configured for cork wood, multiple clamping arms are adjusted in real time to cooperatively apply force through distributed feedback, and the structural integrity of wood of different densities is guaranteed.

The invention discloses an automobile tubular part inner wall supporting type laser welding device and technology, and relates to the technical field of automobile tubular part machining, the automobile tubular part inner wall supporting type laser welding device comprises a pipe welding base, an inner wall self-adaption supporting unit and a vertical displacement adjusting assembly, radial guide bases are connected to the two sides of the pipe welding base, and a synchronous servo motor is installed on the outer side of the pipe welding base; an internal driving screw rod and a guide sliding rod drive a stroke frame and a bearing supporting plate to achieve radial positioning of the supporting unit, the inner wall self-adaptive supporting unit comprises a driving cabin and a synchronous power source, transmission is achieved through a lead screw, a transmission fluted disc and a vortex transmission cylinder, a sliding adjusting sleeve is pushed, a supporting rod drives an arc face attaching lining plate to open and attach to the inner wall of the tubular part, and the tubular part is fixed. A vertical displacement adjusting assembly is arranged in a frame supporting beam, a variable frequency motor and a fine adjustment motor drive a guide screw rod and a screw rod correspondingly, alignment of a laser welding head is adjusted, a welding slag collecting groove in the center of a base and a detachable storage box are convenient to remove slag, and the welding machine is suitable for welding of tubular parts of multiple specifications.

The invention belongs to the technical field of piston rod machining equipment, particularly relates to a hydraulic oil cylinder piston rod machining device and a method thereof, and aims to solve the problem that an existing hydraulic oil cylinder piston rod machining device cannot integrally grind and polish a piston rod at a time. The bottom of the bearing platform is fixedly connected with the upper side of the base, the upper side of the base is fixedly connected with four symmetrical stand columns, and the upper sides of the four stand columns are fixedly connected with the same top plate. According to the hydraulic oil cylinder piston rod machining device and method, when the piston rod body is ground and polished through the device, fixing points, at the two ends of the piston rod body, of the clamp are switched; and therefore, when the device grinds and polishes the piston rod body, the whole piston rod body can be polished without halting, taking down the piston rod body and then fixing the piston rod body, the machining efficiency of the device on the piston rod body is remarkably improved, and the yield of the device is improved.

The invention discloses a three-dimensional curved surface pattern layering processing method based on parameterized segmentation, and aims to solve the problem of high-precision pattern processing on the surface of a curved surface by using a laser scanning galvanometer. The method comprises the following steps: firstly, importing a three-dimensional model, and carrying out parameterization processing to obtain a two-dimensional parameter domain; positioning a to-be-processed plane pattern in the two-dimensional parameter domain to form a complete two-dimensional geometric grid covering a pattern area, generating a three-dimensional pattern grid attached to a curved surface, and calculating a center normal vector of the three-dimensional pattern grid; then, generating an equidistant plane group on the surface of the curved surface, and calculating an intersection line of the plane and the three-dimensional pattern grid as a laser scanning track; and the five-axis linkage platform-galvanometer system is started for machining. Through the parameterization domain, distortion of curved surface pattern machining is effectively solved, machining uniformity is improved, and the method is particularly suitable for laser machining of large-scale or high-complexity curved surface patterns.

The invention belongs to the technical field of five-axis linkage numerical control machining, and particularly relates to a five-axis linkage numerical control machining dynamic error compensation system based on an industrial control system, which comprises a split-axis error detection module, a dynamic compensation model construction module, an industrial control real-time compensation execution module, an RTCP dynamic calibration unit and a self-adaptive learning optimization module. According to the invention, a real-time residual error monitoring and feedback mechanism is introduced to establish data connection with an original adaptive optimization module, so that parameter adaptive adjustment based on an actual compensation effect is realized, and the adaptability and compensation precision of the system under a complex dynamic processing condition are enhanced.

The invention discloses a preparation method of a high-homogeneity and high-stability copper target material, which comprises the following steps of: 1, cutting off a riser of a high-purity copper cast ingot, and turning to obtain a pretreated high-purity copper cast ingot; secondly, the pretreated high-purity copper ingot is heated and subjected to heat preservation in a furnace and then forged to obtain a forged copper blank; thirdly, the forged copper blank is subjected to room-temperature circumferential rolling treatment, and a rolled copper blank is obtained; fourthly, the rolled copper blank is subjected to two-stage annealing heat treatment, and a copper target blank is obtained; and 5, machining, cleaning and packaging to obtain the high-homogeneity and high-stability copper target material. According to the method, the high-purity copper cast ingot is sequentially subjected to pretreatment, forging, room-temperature circumferential rolling, two-stage annealing, machining, cleaning and packaging, preparation of the high-quality copper target material which is uniform in structure, controllable in crystal orientation and excellent in heat stability is achieved, the sputter coating quality is improved, and the method is easy to operate, high in controllability, high in production efficiency and suitable for industrial production. Meanwhile, raw materials and production cost are saved, and the method is suitable for large-scale popularization and application.

The invention belongs to the technical field of tool magazines, particularly relates to a disc type tool magazine with a chain type radial servo chain, and provides the following scheme aiming at the problems that when a tool sleeve is replaced, cuttings and cooling liquid can be carried to enter movable parts such as a locking mechanism in the tool sleeve, so that the mechanism is inflexible in action and blocked, and normal grabbing, releasing and locking of the tool are influenced. Comprising a base body, one side of the base body is fixedly connected with a disc, an index plate is arranged on the base body, and an assembly part is arranged on one side of the base body; and the driving circular pipe is arranged on one side of the assembly part. According to the disc type tool magazine with the chain type radial servo chain, the problem of mechanism clamping stagnation caused by invasion of cuttings and cooling liquid is fundamentally solved through the pre-cleaning module and the positioning auxiliary module, pollution prevention is deeply integrated into the tool changing process, the high tool changing efficiency is maintained while the cleaning effect is ensured, and the tool changing efficiency is improved. And the reliability and the service life of the tool magazine in high-speed machining are remarkably improved.

The invention discloses an intelligent scheduling and collaborative operation system and method based on aluminum alloy part manufacturing and machining, and relates to the technical field of aluminum alloy part manufacturing and machining. The system comprises the following components: a data acquisition and transmission module, which is used for arranging a plurality of sensors in each link of aluminum alloy part casting to acquire material performance and processing parameter data, encrypting and transmitting the data to a processing center, and carrying out data cleaning, format conversion and normalization preprocessing; through cooperative operation of machine learning and a fluid dynamics simulation technology, real-time, accurate and intelligent regulation and control are carried out on the whole aluminum alloy casting process, the machine learning analysis module can monitor material performance in real time and pre-judge the future change trend of the material performance, the fluid dynamics simulation module can deeply analyze casting defect generation roots, and the casting defect generation quality is improved. And the defects of air holes and shrinkage porosity can be prevented in advance, stable product performance is ensured, and the strict requirements of automobile parts and the like for high-quality aluminum alloy products are met.

The invention relates to the field of valve machining, in particular to an inner wall grinding device for valve machining. The inner wall grinding device for valve machining comprises a workbench. The horizontal moving assembly is correspondingly installed in two moving grooves formed in the top of the workbench, and the horizontal moving assembly can move in a reciprocating mode in the length direction of the moving grooves; and the grinding piece is arranged above the horizontal moving assembly, and after the horizontal moving assembly drives the grinding piece to stretch into the inner cavity of the valve, the grinding piece can conduct grinding operation on the inner wall of the valve. According to the inner wall grinding device for valve machining, a first electric push rod in a contraction piece drives an adjusting rod to move, the included angle of a contraction rod is changed in cooperation with a traction rod, an abutting piece and a grinding piece can be driven to expand or contract in the radial direction, the radial opening amplitude of a mounting plate is flexibly adjusted, and the inner wall grinding device can meet the grinding requirements of valves with different inner diameter specifications; the polishing assembly does not need to be replaced frequently, and operation cost and time cost are reduced.

According to the embodiment of the invention, the industrial robot technology is applied to the rolling forming process of the variable cross-section part, and the rolling path can be dynamically adjusted according to the variable cross-section characteristics of the part, so that efficient machining is realized. According to the technology, the limitation of an existing technology in complex geometrical shape machining is broken through and solved, and an industrial robot can conduct high-quality and high-precision rolling forming on the variable cross-section part of a complex structure under the condition that the industrial robot does not depend on a mold. In addition, by combining the flexible path control capability of a robot, the forming precision of the variable cross-section part is remarkably improved, and compared with a raw material, the mechanical property loss of a bending area material of the part obtained after forming through the technology is smaller than 30%.

The invention discloses a horizontal eight-axis five-linkage turning and milling composite machine tool based on a hybrid robot, and belongs to the technical field of high-end equipment manufacturing. According to the technical scheme, the horizontal eight-axis five-linkage turning and milling composite machine tool based on the hybrid robot comprises a machine tool body, and a tool turret mechanism, a workpiece fixing mechanism and a hybrid robot mechanism are sequentially arranged on the side of the machine tool body from bottom to top; the tool turret mechanism comprises a left lower tool turret assembly and a right lower tool turret assembly which are symmetrically arranged on the two sides of the machine tool body. Eight-axis five-linkage machining is achieved through cooperative movement of the symmetrical tool turret assembly and the lifting control mechanism, the self-adaptive supporting assembly and the hybrid robot mechanism are combined, and the problems that a traditional machine tool is insufficient in linkage capacity, poor in workpiece supporting stability and low in automatic cooperative efficiency are solved; the multi-axis linkage machining center has the advantages of being high in machining efficiency, high in supporting stability, excellent in multi-axis linkage precision and outstanding in automatic cooperation capacity.

The invention provides a hydraulic turnover machining clamp for a vertical machining center, belongs to the technical field of machining clamps, and solves the technical problems that an existing machining clamp cannot turn over and cannot be adjusted at multiple angles and the like. Comprising an arc-shaped overturning machine frame and a hydraulic driving mechanism, an overturning mechanism is arranged on the arc-shaped overturning machine frame in a sliding mode, an overturning worm is rotationally arranged below the arc-shaped overturning machine frame and is in transmission connection with the hydraulic driving mechanism, and the overturning mechanism is provided with two fixing base mechanisms arranged in a left-right symmetry mode and two lifting fixing mechanisms arranged in a front-back symmetry mode. A double-shaft hydraulic push rod is arranged between the two fixing seat mechanisms, rotating mechanisms are arranged at the upper ends of the fixing seat mechanisms, and clamping mechanisms are arranged on the rotating mechanisms. According to the multi-face turning and clamping device, stable hydraulic turning and multi-angle adjustment can be achieved, multi-face machining is facilitated, accurate positioning can be achieved, the machining precision can be guaranteed, rotating face changing and stable clamping can be achieved, manual assembly errors are reduced, and the efficient and accurate part machining requirements are met.

The invention particularly relates to a grinding force closed-loop control and flutter suppression system for crankshaft variable stiffness machining, and aims to solve the problems of unstable grinding force, flutter and surface defects caused by time-varying stiffness characteristics of a crankshaft due to a multi-crank throw and cantilever supporting structure. The system comprises a grinding force detection module, a control module and an execution module. The grinding force detection module is arranged in a grinding wheel and crankshaft contact area and collects grinding force signals in real time. The control module receives an actual grinding force signal, compares the actual grinding force signal with a target value, and outputs a compensation instruction and a suppression instruction; the compensation instruction is generated by adopting a self-adaptive PID or fuzzy PID algorithm based on force deviation, and the grinding wheel feeding speed or the main shaft rotating speed is dynamically adjusted to stabilize the grinding force; and extracting a high-frequency component of the force signal as a flutter feature, identifying a flutter bud through time-frequency analysis, and generating an anti-phase displacement instruction to suppress flutter. The execution module adjusts feeding or rotating speed according to the compensation instruction and adjusts radial displacement of the crankshaft or the grinding wheel according to the suppression instruction.

The invention discloses a digital manufacturing method and system for a bracket node in a steel structure column, and relates to the related field of digital manufacturing of building components, and the method comprises the steps: collecting three-dimensional point cloud data of a bracket node connection region in a target steel structure column; stress concentration analysis is conducted in the vertical direction and the horizontal direction, and a key welding point set and a bolt hole site set are marked; lightweight design parameters of the bracket supporting structure are introduced, load stability analysis is conducted, and first assembly parameters are configured; traversing M bracket nodes in the target steel structure column to obtain a first assembly parameter to an Mth assembly parameter, and configuring a digital manufacturing instruction sequence in combination with the three-dimensional point cloud data; and inputting the data into a numerical control machining center, and driving multi-axis linkage equipment to manufacture and manage the bracket node. The technical problems that existing bracket joint manufacturing is low in efficiency and insufficient in precision and stability are solved, and the technical effects that the manufacturing efficiency is improved, the manufacturing precision and stability are improved, and powerful support is provided for energy-saving building material production are achieved.

The invention discloses laser cutting equipment for intelligent manufacturing, and particularly relates to the technical field of laser cutting, the laser cutting equipment comprises an equipment main body and a laser cutter, and further comprises a first support and a second support, and the upper ends of the first support and the second support are provided with a plurality of first supporting strips and second supporting strips correspondingly; the multiple first supporting strips and the multiple second supporting strips are arranged in a staggered mode, a first driving mechanism used for driving the first supports and the second supports to move face to face or back to back is arranged in the equipment body, and a mounting base, a second driving mechanism driving the mounting base to move and a shell movably arranged on the mounting base are arranged in the equipment body. A plurality of cleaning units are arranged in the shell, and each cleaning unit comprises a cleaning wheel which can elastically abut against the upper portion of the corresponding supporting strip in a pressing mode. According to the device, slag on the supporting strip is automatically cleaned, the cleaning efficiency is greatly improved, the influence of the slag on subsequent machining is avoided, and the problem that the cutting precision is influenced due to high-temperature deformation of the supporting part is effectively prevented.

The invention discloses a positioning and clamping fixture for automobile frame welding, and relates to the technical field of automobile manufacturing equipment.The positioning and clamping fixture comprises a workbench, a welding angle adjusting mechanism is arranged at the top of the workbench, and a thermal deformation dynamic compensation positioning and clamping mechanism is arranged at the top of the welding angle adjusting mechanism; a PLC is installed on the top of the workbench. According to the positioning and clamping fixture for automobile frame welding, through the arrangement of the thermal deformation dynamic compensation positioning and clamping mechanism, position deviation caused by thermal deformation is corrected in real time, out-of-tolerance of the size precision of a frame welding part is avoided, subsequent correction processing links are reduced, the production cost is reduced, and the problems that an existing fixture adopts a fixed rigid clamping and positioning structure, and the machining efficiency is high are solved. The problems that position deviation caused by thermal deformation cannot be corrected in real time, the size precision of a frame welding part is out of tolerance, additional correction machining is needed in the follow-up assembling process, and the production cost is increased are solved.