238results about How to "Modular" patented technology

The invention provides a decision support system for risk assessment and safety management of quantitative / semi-quantitative town gas pipelines with a modularized component type structure. The system comprises an invalidation and failure database module, a risk assessment database module, a dynamic segmentation module, a risk assessment module and a decision support module. Assessment objects comprise pipeline auxiliary equipment such as steel pipes, cast iron pipes, PE pipes, valves, condenser cylinders, compensators and the like in two laying modes of burying and erection. The invalidation, failure and risk assessment database modules provide data support for risk computation; the dynamic segmentation module dynamically divides a pipe network into pipe sections convenient for management; the risk assessment module comprises a plurality of sub modules, and a user can selectively carry out risk computation; and the decision support module provides a decision reference basis for a manager. Based on investigating multiple gas companies, each module is established by combining scientific analysis, and can achieve active and dynamic management for the gas pipelines.

The invention relates to the technical field of navigation systems, in particular to a portable blindman independent navigation system. The portable blindman independent navigation system is a main glasses body, which comprises a glasses framework, pinhole cameras arranged on both sides of the main glasses framework, a GPS (Global Position System) arranged in the middle of the main glasses body, earphones arranged at the tail ends of the glasses framework and embedded hardware systems arranged in lenses of the main glasses body; wherein the embedded hardware systems arranged in the lenses of the main glasses body comprise extension ports, ARM (Advanced RISC Machines, RISC is short for Reduced Instruction-Set Computer) systems, videos, ARM inner cores, DSP (Digital Signal Processor) inner cores, FPGs and Linux real-time operation systems. In the portable blindman independent navigation system, the embedded systems are used for carrying out three-dimensional information extraction on binocular images acquired by the pinhole cameras, a built-in navigation map and GPS information are used for comparison to acquire relevant information of positions, directions, front barriers and the like and converting results into voice signals to inform blindmen.

The invention discloses a large span rail traffic damage examination system in the computer applied technology field, which comprises a data acquisition subsystem and a data processing subsystem. The data acquisition subsystem is responsible to examine the vibration condition during a rail traffic vehicle crossing a large span bridge, and gathers dynamic response signals to transfer the data processing subsystem; the data processing subsystem reads the dynamic response signals of a bridge examined by the data acquisition subsystem, combines the dynamics to analyze and calculate the obtained bridge simulation dynamic response signals so as to realize the damage examination of the bridge, achieve that the operation of the system and the data management of the user through a graphic interface and a database technology, and realize the communication between a local computer and a remote computer through the network technology; the invention is characterized in that the invention is modularization and hierarchy, various functional modules can communicate with each other, the precision of the damage examination of the bridge is increased, the normal use of the bridge structure can not be affected.

The invention relates to a high-temperature micro-nano press mark test device and method in vacuum environment, and belongs to the field of mechanical and electronic integration precise instrument. The device can be used in vacuum environment; the oxidization caused by high-temperature environment on a press head and a test specimen can be prevented; the influence of air flowing on the test specimen heating is weakened; the stable heating temperature of the test specimen is ensured; further, the test analysis on the test specimen micro mechanical properties can be started; the characteristics parameters and the like of material hardness, elasticity modulus, creep properties and thermo-mechanical coupling effects are obtained so as to study the influence rule of variable-temperature and high-temperature environment on the material micro mechanical behaviors, deformation damage mechanisms and micro tissue structure evolution; the material and product design manufacturing, service prediction and reliability evaluation are guided. The structure of the device is compact; the measurement precision is high; the application range is wide; the wide application prospects are realized in the fields of material science, equipment manufacturing, ferrous metallurgy, national defense and military, aerospace and the like. According to the test method provided by the invention, the rich material micro mechanical property test theories and technical systems are combined.

The invention discloses an all-weather high speed railway vehicle-mounted obstacle detection system and method. According to the detection system, a camera lens is connected with a short wave infrared imaging device, a posture adjusting device drives the camera lens and an auxiliary lighting device to intelligently adjust the posture of the camera lens and the posture of the auxiliary lighting device in real time, the short wave infrared imaging device is connected with a vehicle-mounted master control system, the vehicle-mounted master control system is connected with a display device, an alarm device and a storage device, and a train operation monitoring and recording device interface is used for communication between the vehicle-mounted master control system and a train operation monitoring and recording device to obtain train operation and track related information. The detection method mainly comprises the steps of real-time front track image collection, image sequence frame processing, real-time camera lens and auxiliary lighting device orientation adjustment, obstacle detection and notification, and the like. According to the all-weather high speed railway vehicle-mounted obstacle detection system and method, the higher target detail resolution ratio and all-weather operation capacity are achieved, real-time communication can be carried out between the all-weather high speed railway vehicle-mounted obstacle detection system and the train operation monitoring and recording device, information such as front track information and train operation speed is obtained, and the false alarm rate can be effectively lowered.

The invention discloses a fuel cell air supply system. The fuel cell air supply system comprises a fuel cell pile used for performing power generation through an electrochemical reaction, an air compressor used for conveying air to the fuel cell pile, a motor used for driving the air compressor to work, an electric power conversion apparatus used for regulating the electric power supplied to the motor, a temperature regulation apparatus and a humidity regulation apparatus used for regulating the temperature and humidity of the supplied air to satisfy target parameters, a sensor assembly used for measuring the pressure, temperature, humidity and flow of the supplied air, and the rotary speed of the air compressor, a bypass branch used for discharging the residual air in the flow, a bypass valve used for controlling the starting area of the bypass branch, an air filtering apparatus used for filtering impurities from the supplied air, and a controller used for controlling operation of each module. By taking a negative electrode air inlet system as one integrated body to perform independent consideration and control, air with the most suitable parameters is supplied to the fuel cell pile accurately.

The invention is a kind of generalized, integral and modular IGBT drawing converter model, which includes converting unit set in the drawer structure, a direct current supporting capacitance unit, gate driving circuit and control box, it has generalization, integration and modularity. The integration degree is high, the radiating mode is selectable, and the assembly and maintenance are convenient.

The invention discloses an underwater robot control system and a dynamic positioning method, and provides a modular control system which can achieve both floating and crawling functions and an underwater robot dynamic positioning method based on an adaptive unscented Kalman filtering state observer and a multivariable and multi-modal fast nonsingular terminal sliding mode controller which can improve the stability of underwater robots. An adaptive unscented Kalman filtering algorithm adopted has a better tracking filtering effect under the influence of factors such as external interference, physical characteristics of acceleration and artificial manipulation, has better robustness for uncertain models, and has high state estimation precision. An underwater robot can arrive at a specified place more quickly and steadily within the thrust range of a propeller, and the thrust compensation can be properly reduced in the area near a target location, so that the underwater robot can make small adjustments to ensure the positioning accuracy.

The invention discloses an underwater robot control system for detection and operation. The underwater robot control system comprises a water surface control system and an underwater control system, the water surface control system is placed on a bank side or a mother ship, and the underwater control system is installed on an underwater detection and operation robot; the water surface control system includes a water surface control panel, a water surface communication transceiver, an umbilical cable, and VR glasses; and the underwater control system includes an underwater communication transceiver, an ARM9 main controller, an ARM-M0 alternate controller, an underwater power supply module, a power supply security detection module, a water leakage detection module, a first low voltage powersupply, a communication module, a second low voltage power supply, a download port, a pan-tilt camera, a sensor module, an underwater lamp, a mechanical hand, and a propeller control module. The underwater robot control system for detection and operation has the advantages of multi-function and modularization, and is convenient to install or disassemble; and the water surface control panel has anemergency stop function and is provided with a wirelessly connected tablet computer for mobile monitoring and positioning.

The invention provides a monitor software design method based on a sensor, i.e. monitor software is designed based on a sensor by taking the monitor software hierarchy structure model as the basic. In the design method, the common functions of the monitor software based on the sensor are realized through the component design, and the special functions are distinguished by means of parameters. The efficient development of the monitor software based on the sensor can be realized by configuring the parameters according to the specific needs of users. A monitor software development platform based on the sensor, which is designed according to the above method, mainly comprises a component gallery which can be repetitively used, a data acquisition subsystem, a parameter configuration subsystem and a monitor software assembly subsystem. The design method is verified through the development embodiments of the production enterprises. The results indicate that the method is feasible, and the development efficiency and software quality are obviously improved.

The invention discloses a simulation experiment device system for porous medium microscopic seepage, which mainly comprises a precise injection pump, a high pressure container, a camera acquisition system, a microscope imaging system, a microscopic model simulation device, an automatic metering system, a back pressure control device, and a computer image processing system; the precise injection pump is connected with the microscopic model simulation device through the high pressure container; the camera acquisition system and the microscope imaging system are disposed above the microscopic model simulation device; both the camera acquisition system and the microscope imaging system are connected with the computer image processing system; the microscopic model simulation device is also connected with the automatic metering system through the back pressure control device; a constant temperature control system is disposed below the microscopic model simulation device; the automatic metering system is also independently connected with the computer image processing system. The simulation experiment device system can realize visual observation of the flowing phenomenon of multi-phase fluid in a porous medium, and the interaction between the fluid and the porous medium, realize more thorough automation of the experiment, and provide more accurate experiment data.

The invention discloses a heat exchanger with a corrugated pipe coil structure provided with an internal duct and an external duct, which comprises an inlet, an outlet, a corrugated pipe, a dome, an internal ring bushing, an external ring bushing, a fan and a bracket. When fluid media to be in heat exchange flow in the corrugated pipe in the heat exchanger from the inlet, form a turbulent flow in a pipe wall with a corrugated structure and carry out heat exchange with air in the internal duct and the external duct outside the corrugated pipe via the wall of the corrugated pipe, the fan discharges air in the internal duct and the external duct, and the fluid media are discharged from the outlet after the heat exchange performed in the corrugated pipe in a spiral way. The heat exchanger has the advantages of high heat exchanger effectiveness, simple structural technology, light weight, integration, and the like, and the fluid media in the pipe coil after the heat exchange have even temperature, thereby the heat exchanger can be used for heat exchange of air, liquid and air-liquid mixing substances. When the corrugated pipe adopts resistant materials, the heat exchanger can be used for heat exchange for corrosive liquid media.

The present invention discloses a large-capacity cascades multiphase multi- electrical level power converter without transformer, which belongs to high pressure large-capacity multiphase multi- electrical level frequency conversion technology field, and characterized in that a single-phase main circuit is composed by identical prime power convert unit through cascades; three single-phase main circuits are connected to the three phase electric network through star or triangle shape; the prime power convert unit constitutes 'back to back' AC-DC-AC inverter circuit topology through DC bus capacitance with multiphase inverter by H-type rectifying bridge; different electrical level, types, number of phases and connecting relation of the prime power convert unit can extends various different polyphase converter practical topology circuit, which saves phase-shifting transformer that original absolutely necessarily but volume weight covers more than one third of that of system, which reduces greatly volume and cost of complete appliance. The present invention is capable of realize high performance operation of speed governing system in four quadrant scope, can feedback energy from the electric motor to the electric network when the electric motor brakes, enhances working condition operation efficiency of speed governing system; and communicate electric network side current harmonics small and power factor close to 1.

The invention discloses an ultrasonic automatic detection system of copper and stainless steel dissimilar metal vacuum brazing water connector, a hardware of which consists of a water connector automatic detection system, a single crystal immersion focusing probe and a reference block; the detection device includes an industrial control machine, a motor driver and motors which are controlled by the industrial control machine and an ultrasonic flaw detection instrument which is respectively connected with the single crystal immersion focusing probe and the industrial control machine; the invention is characterized in that: one motor of the detection device drives a transmission shaft which is moved vertically, a probe angle adjuster is arranged on a shaft, the single crystal immersion focusing probe is arranged at the lower end of a probe angle adjuster, the other motor drives a horizontal rotating disk which is provided with the water connector to be detected, the position of the probe in a water connector cavity body can be regulated by the regulation of the probe angle adjuster, and the ultrasonic waves are transmitted for the detection of the brazing quality of the water connector. The invention has the advantages that the probe structure is compact, the detection system realizes the automatic control, the detection sensitivity is high, the operation is simple, and the invention can automatically identify the defect, calculate the area of defect and provide the spreading picture of the detection results of the water connector rapidly, accurately and intuitively.

The invention discloses a wave absorbing device used for eliminating and reducing noise and pulses of hydraulic system fluid. The wave absorbing device used for eliminating and reducing the noise and the pulses of the hydraulic system fluid comprises a cylinder body, a front end cover, a back end cover, inner pipes, gaps relative to the inner pipes, a through hole, damping holes, sound absorption material, damping vibration attenuation material, a sealing ring, an installation screw hole, an anti-skidding bolt and the like. Threads are arranged on the cylinder body, and the front end cover and the back end cover are fixed on the cylinder body. Circular grooves are formed in the front end cover and the back end cover, and inner pipes in different shapes are fixed on the front end cover and the back end cover. Threads are arranged on the back end cover, used for connecting with the cylinder body, and press tightly the front end cover through an inner pipe structure with an outer flanging. The inner pipes are fixed on the end covers in a directly inserted mode, structures such as the gaps and damping holes are arranged on the inner pipes, and through inner pipes with different inner pipes, a cylinder body inner cavity is divided into parts which are communicated through the damping holes. The sound absorption material is formed by non-metal material and attached to the inner side of the cylinder body, vibration attenuation filler is filled in the connection position of the end covers and a shell body, and the wave absorbing device eliminates and reduces the noise and the pressure pulses in different frequency ranges of the hydraulic system fluid and is a wave absorbing device with a wide effective wave absorbing frequency range.

The invention discloses a method and a system for driving RS422 communication of a CPCI (Compact Peripheral Component Interconnect) bus in a Windows xp system. The system comprises a Windows xp bottom driving program, an inf file, a dll program and a top function test application program, wherein the top test application program is used for calling an API interface function provided by the dll program; the dll program is used for providing the API interface function needed for communication of the top function test application program and the bottom driving program; the inf file is used for providing resource information needed for installing a driving system; the Windows xp bottom driving program comprises a driving program entry function DriverEntry, an AddDevice manager calling function and an IRP dispatch function. The system has the characteristics of modularization and stratification, and supports plug and play; the top function test application program accesses hardware via a specification mode without consideration on control over details of the hardware.

The invention relates to a semi-passive light-weight lower limb exoskeleton. The lower limb exoskeleton comprises a waist assembly and a pair of lower limb motion mechanisms arranged at the two ends of the waist assembly respectively; the waist assembly comprises a first baffle and a second baffle hinged to the first baffle, and the two lower limb motion mechanisms are connected with the first baffle and the second baffle and each comprises a hip joint driving assembly, a thigh assembly, a knee joint assembly, a shank assembly and an ankle assembly which are sequentially arranged on the corresponding waist assembly from top to bottom. Compared with the prior art, the light-weight and submissive design and the semi-passive driving mode are adopted, only the hip joints are driven actively, the knee joints and the ankle joints adopt the passive freedom degree, own energy of the human body is used fully, the gait meets that of the normal human body, the weight and size of the lower limb exoskeleton are obviously reduced, and the semi-passive light-weight lower limb exoskeleton is suitable for lower limb rehabilitation and assisted walk of people with light lower limb dysfunction.

The invention provides a CMMB super-hotpot platform, and the platform comprises a central management server, a database and a client, wherein the central management server, the database and the client communicate with each other. The central management server comprises a finished product warehouse server and a central management layer. The central management layer comprises a content management system, an operation management system, a business supporting system, an advertisement management system, an equipment management system, and a big data system. The platform can achieve the check management of contents, catalogs and an EPG (electronic program guide), also can achieve the management of terminal equipment and users, also can achieve the business supporting functions of product management and charging settlement, builds an end-to-end safety broadcast control system, and meets the implementation demands of multiple business modes which take big data, precise advertisement putting, and O2O.

The invention relates to a frame rate up conversion-oriented motion estimation method which comprises the following steps: dividing a current frame of a video stream into multiple blocks based on the principle of the H.264 / AV variable block, carrying out stationary detection to judge whether each block is stationary or movable, and processing a target block to obtain motion vectors of the target block if the target block is in the state of relative motion. For a high-definition or even ultra high-definition image and a high refresh rate, the invention can effectively ensure the continuity of motion vectors, thereby reducing the blocking effect, video blurring, object halation and the like of the image. The method is concise and effective, thereby facilitating the logical implementation of a large integrated circuit.

The invention provides a short-wave infrared driver vision enhancement system. The short-wave infrared driver vision enhancement system comprises a short-wave infrared transmitting lens, a short-wave infrared imaging device, an integrated data processing device, a control module, a power module and a display device. The short-wave infrared transmitting lens is connected with the short-wave infrared imaging device; the integrated data processing device is connected with the short-wave infrared imaging device through a data transmitting line, and is connected with the display device through a video signal line; the control module is connected with the short-wave infrared imaging device and the integrated data processing device through control lines; the power module provides a power supply required by the system; the short-wave infrared transmitting lens, the short-wave infrared imaging device, the integrated data processing device, the control module, the power module and the display device are all installed in a cab. The short-wave infrared driver vision enhancement system has the advantages that because the short-wave infrared driver vision enhancement system is installed in the cab through the characteristic that short-wave infrared penetrates through glass, the defect that a long-wave infrared vision enhancing system needs installing outside a vehicle because of being not capable of penetrating through glass is overcome, and the requirements for preventing wind, rain and burglary structurally are lowered.

Disclosed is an organ chip unit containing pipeline networks. The unit comprises one or more chips containing input pipeline networks, one or more chips containing output pipeline networks, one or more chamber chips, at least two microporous membranes, at least two barrier cells and two encapsulation plates; the input pipeline networks are used for inputting, diverting and diffusing substances; the output pipeline networks are used for diffusing, converging and outputting the substances; the chamber chips contain parenchymal organ tissue; the parenchymal organ tissue is separated from the input and output pipeline networks by the microporous membranes; the barrier cells are located in the input and output pipeline networks and adhere to the microporous membranes; the two encapsulation plates are used for achieving encapsulation. By using the organ chip unit, the process can be simulated that the substances are diverted through various pipeline networks such as vascular / lymphatic / bronchial / glandular secretion networks, then enter the tissue and are subjected to metabolism in the tissue and gradually converged, the advantages of low cost and rapid performance of the chip are ensured,and meanwhile the organ chip unit is more accurate when applied to medicine screening, case studies and physiological analysis.

The invention discloses an electromagnetic reinforced anaerobic digestion gas production system. The system is characterized in that a water heater is communicated with a first heat exchanger in a main reaction tank through a high-temperature water pump, the first heat exchanger is communicated with a temperature regulator, the temperature regulator is communicated with a hydrolytic acidificationtank through an intermediate-temperature water pump, organic wastewater is communicated with a pretreatment tank, the pretreatment tank is communicated with the hydrolytic acidification tank through afeed pump, and the hydrolytic acidification tank is communicated with a main reaction tank through the feed pump; the pretreatment tank, the hydrolytic acidification tank and the main reaction tank are communicated with biogas residues; the hydrolytic acidification tank is communicated with a gas separator through a gas booster pump, the main reaction tank is communicated with the gas separator through the gas booster pump, the gas separator is communicated with a gas storage tank, the gas storage tank is communicated with a methane carrier vehicle, and the gas separator is communicated witha CO2 distribution device; a buffer solution tank is communicated with the hydrolytic acidification tank through a first peristaltic pump, and is communicated with the main reaction tank through a second peristaltic pump; a magnetic field regulator is communicated with a first magnetic field generation device and a second magnetic field generation device respectively.

The invention discloses an embedded real-time network video monitoring system. An audio coder / decoder and a video coder / decoder are used for performing analog-digital conversion to an audio signal and a video signal from an audio and video input module, and the audio signal and the video signal are transmitted to a multimedia DSP processor after the analog-digital conversion. The multimedia DSP processor handles the audio and the video digital signals; after the handling, on the one hand, handling results are memorized in memory equipment, and on the other hand, the handling results are transmitted to corresponding peripheral equipment through a peripheral interface. A CPLD logical controller is respectively connected with the audio and the video coders / decoders, the multimedia DSP processor and the memory equipment so as to realize logical control of the system. The invention has the characteristics of a digital video-audio recorder (DVR) and a digital video-audio server (DVS), and can not only work independently and locally, but also connect the network to form a strong safety-monitoring network. The system has the advantages of high handling speed, rich functional interface, strong expansibility and miniaturized structure, and can be extensively applied to the safety precautions in the fields of bank, telecom, electric power, traffic, water facilities and the like.

The invention discloses a grain sorting mechanism of an integrated circuit test handler. The mechanism at least comprises a circuit flow channel, an air cylinder, a front retaining rod and a rear retaining rod, wherein the front retaining rod and the rear retaining rod act on the circuit flow channel and the air cylinder; the front retaining rod is connected with an L-shaped connecting piece which is fixed on an air cylinder shaft by a screw; the air cylinder shaft is arranged in the cylinder body of the air cylinder; the front retaining rod and the rear retaining rod are provided with a front support and a rear support; an optical axis and an optical axis groove are formed between the front retaining rod and the rear retaining rod; and the front retaining rod is provided with a threaded hole through which a grain sorting pressure block can be fixed on the front retaining rod by a screw. The grain sorting mechanism is driven by a translation air cylinder, so the use cost is reduced effectively.

The present invention one kind of great-power laser diode array pumping cavity for pumping solid laser. The pumping cavity includes one heat rectangular sink with through hole in the center; an insulating ring set in the through hole; several laser diode array stripes and several arced electrodes, which constitute cylinder with high-reflectivity cylindrical inner surface as pumping cavity, mounted onto the inner surface of the insulating ring; positive and negative electrodes connected to one section of arced transition electrode and led beyond the heat sink; and cooling water passage around the through hole and led out via water pipes.

The invention relates to a CAN bus-based electric vehicle power supply control method. A high-power DC-DC digital parallel control system comprises a micro control unit and electronic control units. The method comprises the following steps that the micro control unit sets one electronic control unit which is qualified as a host to be the host and the rest electronic control units which are qualified as slaves to be the slaves; the micro control unit monitors the working state of the host and the slaves, and performs processing regulation in real time; the host generates reference current Ir according to target voltage Vr from the micro control unit and system feedback voltage Vf and sends the reference current Ir to each slave, and the host and the slaves regulate PWM output according to the reference current Ir and corresponding feedback current so as to realize constant voltage output or constant current output. A digital parallel connection strategy for multiple modules is realized through a CAN bus, thus the defects of complexity and susceptibility to influence of multiple module connection achieved by hardware in the prior art are overcome, and the flexibility and expansibility of the system are improved.

The invention relates to a control system and an operation method of a transient electromagnetic signal acquisition instrument of a handheld pseudo random. The control system comprises a central control and processing module, a signal conversion module, a data memory module, a synchronous module and a touch liquid crystal display module, wherein the core of the central control and processing module is an FPGA (Field-Programmable Gate Array) and is used for completing system control and data processing; the signal conversion module is used for converting a received analog signal to a digital signal; the data memory module is used for recording acquired electromagnetic data and a computed result; the synchronous module is used for synchronizing the acquisition instrument and a transmitter; and the touch liquid crystal display module is used for realizing the work mode of the system and the set of parameters and displaying the acquired data and the computed result. The control system is installed on the handheld electromagnetic signal acquisition instrument and has the advantages of small size, high data processing speed and low power consumption, the operation method of the system is simple and convenient, the acquisition of electromagnetic signals of the pseudo random and transient electromagnetic signals can be realized, and various exploration parameters can be obtained on site.

The invention discloses an internet technology based resistance welding machine remote monitoring system. The internet technology based resistance welding machine remote monitoring system comprises field data collection units, a server data communication service unit, a website service unit and a data file storage unit; each field is provided with a field data collection unit which collects data of a field resistance welding machine device through a wireless networking mode, is communicated with the server data communication service unit through the internet, transmits the correct field data to the website service unit to realize each data function of the website and receives a remote control instruction of the website service unit; and all the data are synchronously transmitted and storedin the data file storage unit. The internet technology based resistance welding machine remote monitoring system solves the present problems such as single field welding management and control means,poor system expansibility, difficult centralized management and control and low welding data utilization rate.

The invention provides a linear type intersected belt type sorting machine. The linear type intersected belt type sorting machine comprises a sorting machine frame, sorting road junctions and a machine body running on guide tracks, wherein the two parallel guide tracks are mounted on two inner sides of the sorting machine frame; the machine body comprises chain plate shells, a miniature electric drum, a common drum, a supporting plate, tensioning bolts, lateral wheels, supporting wheels and a belt driven by the miniature electric drum; the miniature electric drum is mounted on the chain plate shell at one end of the machine body; the common drum is mounted on the chain plate shell at the other end of the machine body; the lateral wheels and the supporting wheels are mounted on the outer sides of the chain plate shells; the supporting wheels roll on the guide tracks; and two ends of the supporting plate are respectively connected with the chain plate shells by bolts. Parcel loading amount of the unit length of the sorting machine can be increased, the components cannot be worn easily, noises are small, the structure is simple, the sorting machine is convenient to repair, the frame is short, and the turning radius in a vertical plane is small.

The invention relates to an ultrafine EDM (Elctron Discharge Machining) machine tool which comprises a machine tool main body mounted on a machine tool base. A top connecting plate and a fixing plate are mounted on the machine tool main body and characterized in that a linear guiding rail is arranged on the fixing plate, a servo motor is mounted on the upper end surface of the top connecting plate and connected with a servo motor transmission shaft which penetrates through the top connecting plate and is connected with a slipway fixed at the upper end of the connecting block, the connecting block is arranged on the linear guiding rail and can slide up and down along the vertical direction relative to the linear guiding rail, the fixing plate is mounted below the connecting plate, a rotary main shaft is fixedly mounted at the lower end of the connecting block, a working liquid tank is arranged on the machine tool base below the rotary main shaft, and a monitoring camera head is mounted on the machine tool main body above the working liquid tank. The invention has the advantages of ultrafineness, high performance, modulation, easy operation and maintenance, and the like and can machine fine holes at a small scale.