143 results about "Machining vibrations" patented technology

The invention relates to the technical field of vibration monitoring, in particular to a rotating machine vibration protection method and system based on particle swarm optimization, and the method comprises the steps: obtaining a corrected load torque based on a polynomial fitting temperature compensation algorithm in combination with a real-time environment temperature and a sensor output voltage, and synchronously calculating an actually measured vibration amplitude; configuring the number of variational mode decomposition layers according to the real-time rotating speed of the rotor to obtain a preprocessed vibration signal, adjusting the number of independent component analysis iterations according to the load torque, separating the preprocessed vibration signal to obtain independent vibration components, and generating a feature vector; calibrating adaptive resonance theory network parameters based on a particle swarm optimization algorithm, obtaining a normalized feature vector, calculating the similarity with a fault feature template, outputting a diagnosis result, calculating the deviation between an actually measured vibration amplitude and a normal vibration threshold, and performing compensation according to the diagnosis result and the deviation. According to the scheme, the fault diagnosis accuracy of the rotary mechanical vibration protection system is effectively improved through multi-working-condition self-adaptive diagnosis.

The invention discloses a linear friction welding machine vibration compensation control method based on iterative learning, and the method comprises the steps: collecting a vibration signal of an electro-hydraulic servo vibration system of a linear friction welding machine in a welding process, determining a vibration amplitude, frequency and vibration center deviation, and when the vibration amplitude or the center deviation exceeds a preset threshold value, starting the linear friction welding machine; the controller starts vibration compensation control; an electro-hydraulic servo vibration system model is established, the rigidity characteristic and the dynamic load change of the system are comprehensively considered, an iterative learning control law of a controller is designed, and control convergence conditions are analyzed to ensure the stability and the high efficiency of control; based on the output of the controller, the error trend of the vibration signal is predicted in real time in combination with historical iteration data, and a feed-forward control signal is generated through a feed-forward compensation mechanism to adjust the vibration signal error in advance. According to the method, the iterative learning is applied to the vibration compensation control of the linear friction welding machine, so that the precise compensation of the vibration signal is realized.

The invention belongs to the technical field of robot machining vibration suppression, and particularly relates to a two-way electromagnetic type variable-stiffness damper for suppressing robot machining vibration and a kinetic parameter optimization method of the two-way electromagnetic type variable-stiffness damper. The damper comprises an electromagnetic variable-rigidity elastic element and a connecting shaft, the electromagnetic variable-rigidity elastic element comprises a permanent magnet fixedly arranged on the connecting shaft in a sleeving mode and a solenoid coil arranged in the circumferential direction of the permanent magnet, and the solenoid coil is in sliding connection with the connecting shaft; when the solenoid coil is electrified, the generated magnetic field direction is the same as the magnetic field direction of the permanent magnet. The magnetic field intensity in the coil is changed by adjusting the input current in the coil, so that the rigidity of the damper is quickly adjusted in a large range; on the basis, a tool nose frequency response prediction model considering the influence of the additional damper is established, and according to a tool nose frequency response test result of the robot milling system under the multi-pose condition, fixed kinetic parameters of the damper are optimized.

The invention relates to the technical field of numerical control machining, and discloses an end mill tool bit parameter optimization method which comprises the following steps: step 1, collecting cutting force data, cutting temperature data and machining vibration data in a machining process in real time through a sensor group integrated on an end mill tool bit; the sensor group comprises a strain sensor, a temperature sensor and a vibration sensor; 2, the collected cutting force data, cutting temperature data and machining vibration data are subjected to wireless processing; according to the technical scheme, a closed-loop control system is constructed, the feeding speed, the cutting angle and the cutting depth are automatically adjusted according to dynamically-changed cutting force and vibration data, it is ensured that the machining process is always kept within a stable interval, the machining precision and the surface quality of a workpiece are effectively improved, and the machining efficiency is improved. Compared with the technical scheme that fixed preset parameters are adopted for machining in the prior art, the defect that the precision and quality of the workpiece are finally damaged due to process instability caused by the fact that adaptive adjustment cannot be achieved is overcome.

The invention relates to an anti-vibration cutter bar system for oversized-diameter deep hole trepanning, belongs to the technical field of deep hole machining, and solves the problems of large machining vibration, difficulty in guaranteeing hole shape precision, abnormal wear of a cutter and the like caused by insufficient rigidity and poor guide stability of a cutter bar system during oversized-diameter deep hole trepanning machining in the prior art. The system comprises a boring rod and a modularized trepanning cutter crown, wherein the modularized trepanning cutter crown is combined with the front end of the boring rod through a transmission convex key and a screw; at least one alloy guide key and at least one piece of damping wood are arranged on the outer circle face of the modular trepanning cutter crown, and the alloy guide keys and the damping wood jointly form a composite anti-vibration guide structure. Vibration in the machining process is effectively restrained through the composite anti-vibration guide structure, the dynamic stability of a tool bar system is improved, the tool bar system is particularly suitable for trepanning machining of super-large-diameter deep holes with the diameter larger than 400 mm, the machining requirements of different inner hole diameters can be met by replacing tool crowns of different sizes, and the machining precision and efficiency are improved.

An electromagnetic actuator assembly, integrated within a boring tool, for controlling unwanted machining vibration, comprising an outer tubular oscillating mass made of ferromagnetic material, through which the magnetic flux can pass; an inner stator that comprises an electromagnet assembly, located at the center of the tubular oscillating mass, for applying a controllable magnetic field to the oscillating mass; one or more damping elements, each having one or more springs and / or a damping material with predetermined stiffness and damping properties (such as a polymer or oil); a controller for providing a desired current to the electromagnets of the electromagnet assembly to obtain the controllable magnetic field; a holder for allowing the rotation of the electromagnet assembly to a desired angle, for stimulating the oscillating mass to apply a damping force, based on a combination of the magnetic field and stiffness and damping properties, which is aligned with the direction of the unwanted vibration.

The application provides an oil fume machine vibration testing device and a design method thereof, and relates to the technical field of oil fume machine vibration testing equipment. The design method mainly comprises the following steps: constructing a finite element model of the target oil fume machine vibration testing device; determining whether all the natural frequencies of the finite element model are located outside a preset motor excitation frequency range; if not, modifying the current finite element model to pass the modal checking stage; for the finite element model that passes the modal checking stage, applying a preset virtual load at the motor installation position to perform vibration simulation, and determining whether the maximum displacement is greater than or equal to a predetermined threshold; if not, modifying the current finite element model to pass the stiffness checking stage, and repeating the modal checking stage; iteratively performing the modal checking stage and the stiffness checking stage. Through the embodiments provided in the application, the oil fume machine vibration testing device designed can simulate the vibration of the oil fume machine during operation, and reduce the influence of resonance and forced vibration.

The application discloses a non-Newtonian fluid elastic auxiliary support clamp and belongs to the technical field of machining clamps. The clamp comprises a bottom plate provided with arrayed stepped mounting holes, an elastic auxiliary support assembly, a fixed support assembly and a pressing assembly. The upper section of the mounting hole is a smooth hole, and the lower section is a threaded hole; the elastic auxiliary support assembly comprises a non-Newtonian fluid medium filled in the hole, a compression spring arranged at the bottom and an elastic support nail in the shape of a stepped shaft. The fixed support and the pressing assembly are fixed in the mounting hole through threads. The application utilizes the shear thickening characteristic of the non-Newtonian fluid, and under the action of a milling impact force, the medium is instantaneously solidified to generate rigid support, thereby effectively inhibiting machining vibration and tool relief deformation of the overhanging part of a thin-walled plate part. The application has the advantages of simple structure, low cost, good universality and adaptability to multi-variety and small-batch production.

The invention discloses a dry bulk cargo port rotating machine fault diagnosis method based on a Transform-KAN network, and the method comprises the steps: obtaining an original vibration time sequence signal of a dry bulk cargo port rotating machine with a marked fault type, carrying out the preprocessing of the original vibration time sequence signal, and obtaining a preprocessing time sequence signal; the method comprises the following steps: constructing a Transform-KAN fault diagnosis model, wherein the Transform-KAN fault diagnosis model comprises an input module, a Transform encoder module, a feature aggregation module and a KAN network module; taking the preprocessed time sequence signal as feature data, taking the fault type as label data to obtain a sample data set, and performing model training on the constructed Transform-KAN fault diagnosis model according to the sample data set to obtain an optimal fault diagnosis model; and inputting a to-be-diagnosed rotating machine vibration time sequence signal to the optimal fault diagnosis model so as to realize fault diagnosis of the dry bulk cargo port rotating machine. The technical problems that an existing rotating machine fault diagnosis method is low in diagnosis accuracy, poor in anti-interference capacity, difficult to adapt to harbor severe environments and the like are solved.

The application relates to the technical field of gear machining, in particular to an intelligent hole expanding device and method for gear forging, which comprises a machine base and a pressure head capable of expanding the hole of a gear workpiece, the surface of the pressure head is fixedly connected with sawteeth, further comprises a moving bracket arranged above the machine base and used for supporting the gear workpiece, the top of the moving bracket is provided with an inclined bracket matched with the gear workpiece tooth groove, one end of the inclined bracket is fixedly connected with a plurality of extension cylinders capable of extending into the gear workpiece tooth groove, the inside of the inclined bracket is provided with an oil tank storing silicon oil, the oil tank is communicated with the extension cylinders through a delivery cylinder, the outer surface of the extension cylinder is provided with flexible sheets capable of extending and abutting against the gear workpiece tooth groove, the inside of the delivery cylinder is provided with a driving assembly capable of driving the flexible sheets to extend, and one side of the inclined bracket is provided with an extending assembly capable of driving the silicon oil to flow and providing power for the driving assembly. The flexible sheets can self-adaptively extend and abut against the inner wall of the gear tooth groove to absorb machining vibration.

The utility model relates to a novel brick making machine vibration device, the bottom of a vibration mechanism is fixedly connected with a noise reduction protection supporting mechanism, a connecting mechanism is arranged between a vibration operation table and the noise reduction protection supporting mechanism, the noise reduction protection supporting mechanism comprises four fixing columns, four noise reduction baffles are connected among the outer surface walls of the four fixing columns in a sliding mode, and the noise reduction baffles are connected with the vibration operation table. The number of the connecting mechanisms is four, the four connecting mechanisms are connected to the four fixing columns correspondingly, the upper fixing plate is fixedly connected to the bottom wall of the vibration operation table, the upper limiting barrel is fixedly connected to the bottom wall of the upper fixing plate, the lower fixing plate is fixedly connected to the top faces of the fixing columns, and the lower limiting barrel is fixedly connected to the top wall of the lower fixing plate. Two ends of the connecting spring are respectively clamped in the upper limiting barrel and the lower limiting barrel; effective damping capacity is provided through the arranged connecting mechanism according to the elasticity of the connecting mechanism, the outer surface walls of the fixing columns are shielded and sealed through the noise reduction baffles, and the noise transmission effect is effectively reduced.

The utility model discloses a leakproof device for feeding modified plastic granules, which comprises a modified plastic granule processing machine, a feed pipe is mounted at the top of the modified plastic granule processing machine, a first mounting hose is sleeved on the outer ring of the feed pipe, a connecting pipe is fixedly mounted at the top end of the first mounting hose, and a receiving hopper is welded on the outer ring of the connecting pipe. A second mounting hose is fixedly mounted at the top end of the connecting pipe, and hose clamps are arranged on outer rings of one sides of the first mounting hose and the second mounting hose. By arranging the hose, the hose clamp, the ratchet wheel, the pawl and the like, the hose clamp is prevented from loosening due to machine vibration when a related machine is started; by arranging the first mounting hose, the second mounting hose, the hose clamp and the like, flexible connection at the connecting position is achieved, the situation that according to traditional rigid connection, when a related machine is started, vibration occurs, and consequently the connecting position is staggered is avoided, and the connecting stability is improved.

The utility model relates to the technical field of continuous casting machine vibration, and discloses a vibration device for a metallurgy continuous casting machine, which comprises a mounting base and a vibration rack, one side of the vibration rack is fixedly connected with a mounting rack, the lower end of the mounting rack is fixedly connected with a second sliding cylinder, and the periphery of the upper end of the mounting base is provided with sliding grooves. Four sliding grooves are formed in the lower end of the vibration rack, sliding blocks are slidably clamped to the inner surfaces of the four sliding grooves, buffering bent rods are rotationally connected to the upper ends of the four sliding blocks, the upper ends of the four buffering bent rods are rotationally connected with the four corners of the lower end of the vibration rack correspondingly, and first buffering springs are fixedly connected to one sides of the four sliding blocks; the two sides of the upper end of the installation base are both provided with sliding rods, and the two ends of the two sliding rods are both fixedly connected with first fixing blocks. When the device vibrates a crystallizer, force borne by the vibration rods of the device is minimized, metal fatigue of the device is relieved to the maximum extent, and the service life of the device is prolonged.

The invention relates to the technical field of motor shell machining, and discloses a cutting device for vibration motor shell machining, which comprises a cutting table, and further comprises an equipment box fixedly connected to the lower part of the cutting table and used for supporting the cutting table; the clamping mechanism is arranged in the equipment box and is used for clamping a machine shell; and the bottom of the cutting machine rotates around the machine shell on the cutting table through a rotating mechanism for cutting. By means of the rotating mechanism, constant initial feeding force is provided through the first tension spring, meanwhile, self-adaption of the cutting process is achieved through a one-way pawl mechanism composed of a deflector rod and a limiting hole with a rectangular bayonet, when the wall thickness is not uniform or casting defects occur, cutting counter-force can push the cutting machine to slightly retreat in the radial direction for buffering, and the cutting effect is good. And when the cutting condition is normal, the mechanism can lock and allow continuous feeding, knife pricking, tipping and even workpiece damage caused by sudden change of cutting force can be greatly avoided, and the mechanism is particularly suitable for machining characteristics of a vibration motor casting shell.

The invention relates to the field of machining, in particular to an angle head and main shaft connecting device with high connecting strength, comprising a power transmission module for transmitting main shaft power to an angle head; the pneumatic control module comprises a stator and a rotor which can rotate relatively, and a closed gas path is formed between the stator and the rotor through a sealing assembly, so that gas pressure is output in a rotating state; and the clamping module comprises a piston assembly controlled by air pressure, a transmission part and a clamping part, and axial movement of the piston assembly is converted into radial locking force of the clamping part through the transmission part. The gear bearing is axially positioned through the bearing baffle ring, so that an axial supporting reference is formed; the stator is fixedly connected with the protective cover, and the rotor is fixedly connected with the piston base and the output disc, so that a stable connecting frame is formed. The connection strength is greatly improved, the angle head self-weight inclination and the machining vibration are effectively eliminated, and the control precision of radial run-out is improved.

The invention discloses an internal expansion type numerical control lathe fixture for a thin-walled cylinder workpiece. The internal expansion type numerical control lathe fixture comprises a chuck body, a fixture body, a positioning cover, an expansion sleeve, a locking block and a locking wrench, the other end of the chuck body is connected with the clamp body; the positioning cover is connected with the clamp body, and the outer surface of the positioning cover makes contact with the outer surface of a workpiece to achieve workpiece positioning. The expansion sleeve is in conical fit with the clamp body, and the expansion sleeve expands to enable the outer surface of the expansion sleeve to make contact with a workpiece so as to abut against and clamp the workpiece; the locking block is connected with the expansion sleeve, the locking block is in threaded connection with the clamp body, and the expansion sleeve is controlled to be expanded and shrunk through rotation of the locking block; and the locking wrench is connected with the locking block. The expansion sleeve is matched with the conical surface of the clamp body, expansion of the expansion sleeve is controlled through threaded connection of the locking block, the thin-wall cylindrical workpiece is clamped by the expansion sleeve, the deformation of the part is reduced, the form and location tolerance of the part is guaranteed, the problem of machining vibration of the thin-wall workpiece is solved, and the machining efficiency and the machining quality of the part are greatly improved.

The application discloses a kind of milling surface topography distribution characteristics analysis methods of aviation structural parts, analysis vibration displacement signal distribution characteristics;Milling surface topography is obtained and the construction of milling surface topography feature distribution curve;Analysis vibration displacement signal distribution characteristics and the relevance of surface topography feature distribution characteristics, with milling surface topography curve time frequency as reference sequence.Overefficient milling experiment, obtain milling surface topography, extract milling transition surface residual feature curve, analyze the time-frequency characteristics of milling transition surface feature distribution curve.Using the relevance analysis between milling vibration displacement signal and surface topography feature, using grey correlation analysis method, assess the close degree of the influence of milling vibration on processing surface topography, and the correlation characteristics of vibration and processing surface topography characteristics are clear.

The invention discloses a machine vibration energy collecting device based on a magnet-friction nanometer generator. The machine vibration energy collecting device comprises a bottom plate, a friction nanometer power generation unit, a load bearing plate, a permanent magnet and an elastic supporting plate. The first electrode is arranged on the bottom plate; the friction layer is of a flexible structure; the friction layer is provided with two oppositely-arranged load bearing plates, and one ends of the two load bearing plates are fixed to the bottom plate through elastic supporting plates correspondingly. The two load bearing plates are respectively provided with a permanent magnet, and the same-name magnetic poles of the two permanent magnets are oppositely arranged; the friction layer forms a structure with the two ends elastically supported and the middle arched upwards under the action of the elastic supporting force of the elastic supporting plate, the gravity of the load bearing plate and the gravity and repulsive force of the permanent magnets. The machine vibration energy collecting device based on the magnet-friction nanometer generator has the advantages of being simple in structure and high in power generation efficiency, and it is ensured that vibration energy is effectively and continuously captured.

The invention relates to the technical field of automatic control, in particular to an anti-falling device guide rail machining control system. The method comprises the steps that a multi-source data sensing unit collects guide rail morphology data, machining vibration data and environment data based on a multi-sensor network module, and machining state joint characterization is achieved through a Kalman filtering algorithm; the defect real-time early warning unit is used for identifying processing abnormity and size out-of-tolerance in a layered manner based on a cascade detection module, and quantifying defect risks in combination with a dynamic tolerance model so as to realize real-time early warning; the process optimization unit integrates macroscopic parameters and microscopic states based on a feature fusion module, and generates optimal cutting parameters through a self-adaptive optimization framework; the dynamic compensation control unit corrects the machining track in real time based on a path compensation module, and the critical dimension precision is ensured through a multi-objective optimization algorithm; and the quality tracing unit records process data based on the full-cycle data link module, evaluates equipment performance degradation and part life through a survival analysis model, and drives maintenance and calibration.

The utility model relates to a high-stability machining clamp which comprises a base plate, a fixed jaw plate and a movable jaw plate capable of moving back and forth relative to the fixed jaw plate are arranged on the base plate, transverse sliding grooves are formed in the clamping end face of the fixed jaw plate in a left-right spaced mode, and the movable jaw plate can move back and forth relative to the fixed jaw plate. Auxiliary limiting plates are arranged on the two transverse sliding grooves in a left-right sliding mode, and a first locking assembly capable of synchronously locking the two auxiliary limiting plates is further arranged on the fixed jaw plate. The limiting position can be flexibly adjusted according to the outline of the workpiece through the left and right transverse sliding grooves formed in the fixed jaw plate and the sliding type auxiliary limiting plate, and the inclusiveness of the clamp to the special-shaped workpiece is expanded; the auxiliary limiting plate and the fixed jaw form multi-point cooperative clamping, local stress is dispersed, workpiece displacement caused by machining vibration is effectively restrained, and the clamping rigidity is remarkably improved; and meanwhile, synchronous locking of the auxiliary limiting plates on the two sides is achieved through the first locking assembly, traditional tedious operation of adjusting one by one is avoided, and the adjusting time is shortened.

The utility model belongs to the technical field of floor forming machines, and particularly relates to a floor forming machine vibration box bearing lubricating structure which comprises a vibration box body, and the vibration box body comprises a box body and a vibration assembly. The vibration assembly comprises a transmission shaft and an eccentric block assembly, lubricating oil is arranged in the box body, an open type oil channel is formed in the upper portion of the box body, a guide hole is formed in the open type oil channel, the open type oil channel is communicated with a bearing hole through the guide hole, and the open type oil channel is higher than the bearing hole. The utility model provides a bearing lubricating structure for a vibration box of a floor forming machine, which can realize lubrication of lubricating oil, and can realize real-time synchronous lubrication as long as the vibration box works, so that the timeliness of lubrication is realized, the cooling of a bearing is facilitated, and the service life of the bearing is prolonged.

The present application relates to the technical field of machining tools, in particular to a numerical control machining tool for long shaft parts, comprising a tool main body, two sets of clamping assemblies, two sets of connecting assemblies, a driving assembly and two sets of pushing assemblies. At least one set of the connecting assemblies is arranged to slide along the axial direction. An elastic member one is arranged between the connecting assembly and the clamping assembly, and the elastic member one is stretched by moving the connecting assembly to apply an axial tension to the part. The pushing assembly is arranged in the clamping assembly and comprises a pushing member and a driving member one, and is used to abut against the end face of the part. The present application further comprises an auxiliary assembly and a limiting assembly. When the clamping assembly is released to avoid the end machining tool, the limiting assembly locks the position of the pushing member, and cooperates with the auxiliary assembly to assist the fixing of the part in the radial and axial directions. The axial stretching mechanism effectively compensates for the thermal deformation of the long shaft part and suppresses the machining vibration.

The utility model discloses a numerical control machine tool loading module which comprises a base frame, and a balance support is connected with the base frame in a hinged mode through a middle hinge portion. One end of the balance bracket is provided with a front pull rod hinging part, and the other end is provided with a rear pull rod hinging part; the balancing weight is hinged to the balance support through the rear pull rod hinge part. A rotary actuator capable of sliding up and down is arranged on the surface of the base frame and hinged to the balance support through a front pull rod hinge part. According to the utility model, the weight of the rotary actuator and related structural members is balanced through the balancing weight, so that the weight of the rotary actuator is loaded at a moderate numerical value which is slightly heavier than the weight of the balancing weight, and the rotary actuator is pressed on a product in a suspended posture for milling, grinding and polishing. In the machining process, surface defects, caused by machining vibration, of a product are avoided between the rotary actuator and the workpiece, and the good surface machining effect is achieved, especially in the aspects of grinding and polishing of hard and brittle materials.

The invention belongs to the technical field of aero-engine complete machine vibration control, and particularly relates to a broadband vibration absorber and a multi-fulcrum shared bearing structure, and the broadband vibration absorber comprises a shell, a baffle and a lamination group; the shell is detachably connected with the lamination group, and an annular cavity is formed inside; the lamination group is mounted in the annular cavity in the radial direction of the annular cavity, and comprises bolts, and a metal rubber ring I, an arc-shaped metal lamination I, a metal rubber ring II, an arc-shaped metal lamination II, a metal rubber ring III, an arc-shaped metal lamination III, a metal rubber ring IV, an arc-shaped metal lamination IV and a metal rubber ring V which are stacked and penetrated by the bolts. Under the condition that the radial rigidity of the main force bearing structure is guaranteed, high-frequency mechanical vibration which is uploaded to the outer casing from the two rotors along the force transmission route is absorbed through the metal lamination and metal rubber sheet combined structure which are arranged on the main force transmission route and have different sizes, and the whole machine vibration response level reflected in the outer casing can be remarkably reduced.

This utility model relates to the field of grinding machine technology, specifically disclosing a grinding machine vibration damping device and a grinding machine, including a vibration damping seat, which includes a pad body and an annular damping pad connected to the bottom of the pad body; and a connecting seat, which includes a central block, a threaded ring connected to the bottom of the central block and threadedly engaged with the pad body, a lever connected to the outer wall of the central block, a reinforcing ring connected to the bottom of the lever, and a rubber washer connected to the top of the central block; in this utility model, the elastic deformation of the annular damping pad can effectively absorb the vibration generated by the grinding machine during operation, reducing the impact of vibration on the grinding machine's machining accuracy and service life. The height of the connecting seat can be adjusted, and after adjustment, the adjusting screw of the stabilizing component can easily adjust the distance between the wedge block and the threaded ring, thereby adjusting the connection tightness between the connecting seat and the vibration damping seat and improving the working stability of the vibration damping device.

The invention relates to an innovative drilling and detecting integrated tool for the field of civil aircraft transmission gear shaft assembly cross hole finish machining, and the core of the tool is that a high-rigidity positioning system and a modular functional framework are constructed by integrating a gear shaft flexible supporting module and a cross hole one-time drilling, reaming and detecting composite process; the problem of machining vibration caused by insufficient supporting rigidity of a traditional tool and the problem of high manufacturing cost caused by poor mold universality are effectively solved, meanwhile, the multi-link error accumulation effect is remarkably reduced by means of the integrated design of the drilling and inspection procedure, the technological breakthrough that the machining period is shortened, and the one-time inspection qualification rate is increased is achieved, and the production efficiency is improved. According to the scheme, through standardized module design, a reproducible industrial solution is provided for precise manufacturing of the cross hole of the aircraft cabin door gear shaft assembly, and the machining efficiency and precision bottlenecks of structural parts of the type in the aeronautical manufacturing field are broken through through process innovation; and a technical path with demonstration significance is provided for tool technology upgrading in the high-end equipment manufacturing industry.

According to the manufacturing method of the V-shaped waveguide tube, blanks of the V-shaped waveguide tube comprise a rectangular flange blank, a rectangular V-shaped tube body blank and a rectangular V-shaped cover plate blank, the rectangular V-shaped tube body blank and the rectangular V-shaped cover plate blank are convenient to clamp for rough machining and finish machining, machining of the V-shaped tube body is completed through the three-stage process of rough machining, aging treatment and finish machining, the two ends of the V-shaped pipe body are blocked in the rough machining process and the finish machining process, and the deformation amount of an inner cavity in the machining process and the deformation amount of the inner cavity in the follow-up welding process are reduced; in the finish machining process, low-temperature alloy is injected into an inner cavity of the V-shaped waveguide tube, the strength and vibration resistance of the V-shaped tube are improved, machining vibration is effectively restrained, the V-shaped tube can be prevented from being clamped and deformed in the machining process, rapid positioning and clamping are achieved through clamping of the V-shaped positioning base and the supporting base, and therefore the machining efficiency is improved.

The utility model discloses a turnover type adsorbent particle classificator, and aims to solve the problems that most enterprises in the existing hemoperfusion device industry adopt manual operation, and no mature machine equipment is used for completing batch production and automatic production of adsorbent particle damage, adhesion and the like, and the turnover type adsorbent particle classificator comprises an outer frame, a discharging mechanism is connected to the interior of the outer frame, a turnover mechanism is connected to one side of the lower portion of the discharging mechanism, a rotary turnover structure and a vibration structure are arranged at the lower end of the turnover mechanism, the turnover mechanism is used for screening out unqualified adsorbent particles with damage, adhesion and the like, and a collecting table is connected to one side of the lower end of the turnover mechanism. Adsorbent particles which are uniform and consistent in size are equivalently transferred through the screw rod, and damaged, irregular, adhered, unround and inconsistent-size adsorbent particles are further screened out in cooperation with the flat plate with a certain inclination, the turnover mechanism, vibration of the vibration machine and the like.

The invention relates to the technical field of high-end intelligent manufacturing and numerical control machining, and discloses a five-axis machining collaborative optimization method and system based on physical process decomposition and residual correction, and the method comprises the steps: obtaining geometric and physical data of a machining task; a mixed agent model composed of a basic physical model and a residual error correction network is constructed, the basic physical model rapidly estimates a reference value of a processing physical quantity based on a physical mechanism, and the residual error correction network learns and predicts a residual error between the reference value and a real value; and finally, by taking the mixed agent model as a core evaluation engine, collaboratively optimizing tool nose path NURBS parameters, tool shaft attitude NURBS parameters and variable feed rate function parameters in a unified differentiable optimization framework so as to minimize machining vibration and cutting force fluctuation and improve machining efficiency. According to the method, the reliability of the physical model and the flexibility of the data-driven model are fused, and the problems that in the prior art, pure physical simulation is low in speed, and pure AI model data is high in dependence and poor in interpretability are solved.

The utility model relates to the technical field of damping and buffering devices, and discloses a cement block forming machine vibration table damping and buffering device which comprises a steel platform, a vibration table top is fixedly installed at the top of the steel platform, and a vibration motor is fixedly installed at the bottom of the steel platform. The bottom of the steel platform is provided with a crossed inclined damping buffering mechanism and a lateral limiting mechanism. According to the damping and buffering device for the vibration table of the cement block forming machine, through the arranged crossed and inclined damping and buffering mechanism, in the using process, four spiral springs are symmetrically arranged at the inclination angle of 75 degrees, the vertical damping and buffering capacity can be kept, meanwhile, transverse displacement of the table top of the vibration table is restrained, and under cooperation of a lateral limiting mechanism, the vibration table top is prevented from being damaged. The vibration table top can only move up and down under vibration, relative displacement between a mold and the top of the vibration table top can be avoided, the situation of size deviation of building blocks is avoided, and the rejection rate of cement building blocks is reduced.