54results about How to "High quality and precision" patented technology

The invention discloses a calibration method of a polarization focal plane imaging system and an imaging system, relates to the field of photoelectric imaging and remote sensing detection imaging, and solves the problems of low correction efficiency and difficulty in correcting a system with a changed polarization state in the conventional polarization error correction technology. According to the calibration method, a plurality of coding patterns and corresponding polarization modulation matrixes are obtained based on the collected uniform light field and serve as calibration results. The polarization error correction method comprises the steps of obtaining an observation intensity vector based on a target scene; a corresponding polarization modulation matrix is obtained based on the coding pattern according to a coding polarization modulation matrix lookup table, and then a down-sampling Stokes vector after polarization error correction is obtained; and completing the correction of the polarization error through an imaging reconstruction method. A polarization focal plane imaging system comprises an imaging lens, a DMD digital micromirror array coding module, a focal plane DoFP polarization detector and an imaging reconstruction module. The method is suitable for the fields of remote sensing detection, target identification, environment monitoring and the like.

The application discloses a kind of nnUNet zebra fish juvenile whole brain vascular system segmentation methods based on autonomous data set training, it is related to high-resolution imaging technology, image processing and medical image segmentation field, the method makes full use of zebra fish live transparency and fluorescent label advantage, obtains high-resolution whole brain three-dimensional vascular image data, and constructs high-quality segmentation truth value database by semi-automatic segmentation and artificial correction, training is carried out using nnU-Net deep learning model, realize the three-dimensional automatic segmentation of zebra fish brain vascular system signal.The application method significantly improves the degree of automation and precision of image segmentation, effectively solves the problems of low efficiency, high artificial dependence and poor repeatability of traditional brain vascular segmentation.The method is suitable for large-scale high-throughput data processing, can provide efficient, standardized image processing scheme for zebra fish brain vascular development mechanism and brain vascular disease model research, and has wide application prospect.

The utility model discloses a stainless steel pot trimming equipment, including machine table, rotation device, hold-down gear and cutting device, rotation device includes first frame, driving spindle, driven spindle and first drive mechanism, first frame is fixed connection on machine table, driving spindle is horizontally arranged and rotatablely connected on first frame, driven spindle is fixed on first drive mechanism. One end of the driving rotating shaft is fixedly connected with a first flange plate, the first driving mechanism is connected with the other end of the driving rotating shaft and can drive the driving rotating shaft to rotate, and the driven rotating shafts are used for sleeving stainless steel kettles and have different specifications; the first flange plate and the second flange plate are detachably and fixedly connected through bolts; the pressing device is used for pressing the stainless steel kettle onto the driven rotating shaft; the cutting device is used for cutting stainless steel kettles. The embodiment of the utility model can quickly adapt to the machining requirements of workpieces with different sizes.

This disclosure relates to the technical field of strip steel right-angle edge protection processing equipment. One embodiment of this disclosure provides an edge protection processing device for strip steel production, which includes: a frame and a drive motor. The drive motor is disposed at the bottom of the frame, a feeding assembly is disposed on the frame, a directional sleeve is fixed on the surface of the frame, and a conveying and forming assembly is disposed on the frame. The conveying and forming assembly includes a pair of conveying rollers, both of which are rotatably connected to the frame. Each conveying roller has a transmission gear at its upper end, and the transmission gears mesh with each other. One of the conveying rollers is controlled to rotate by a motor. A first hydraulic cylinder and a second hydraulic cylinder are respectively disposed on the frame. Through the above technical solution, the technical problem of the prior art, which usually involves first transporting the strip steel to the bending area, bending it using a specific mold and pressure equipment, and then pushing it backward after forming before cutting, cannot be completed simultaneously.

This invention discloses an automatic metal surface drilling device, including a drilling platform, a vertical drilling assembly, a coolant nozzle, a deformable support plate, and a moving assembly. The vertical drilling assembly is equipped with a tool changing module, enabling automatic switching between roughing and finishing tools. The coolant nozzle is equipped with a gas-liquid mixing valve that sprays a mixed fluid containing microbubbles, which help to lift waste chips to the surface. The deformable support plate is housed in a sleeve and automatically unfolds after being pushed out to form a rigid support surface, allowing it to reach into the drilled hole to remove residual waste chips. The moving assembly drives the sleeve to switch between machining, chip removal, and unloading stations. This invention combines gas-liquid suspension chip removal with physical chip removal by the support plate, which can thoroughly remove waste chips from the drilled hole, preventing waste chips from scratching the hole wall during finishing. The entire process is automated, effectively improving drilling accuracy and production efficiency, and is suitable for the batch processing needs of high-precision blind holes and deep holes.

The present application relates to the technical field of turbine double-sided array blade processing of an aero-engine, and particularly relates to a turbine double-sided array blade integrated forming electrolytic machining tool and method, through the continuous feeding of the left and right tool cathodes to the direction of the part to be processed at the same time, the double-sided array blade is simultaneously machined; the machining tool comprises a cathode clamping block, a tool cathode, a sealing device and a support seat device; a plurality of electrolyte input channels are arranged on the left and right sides of the support seat, the liquid of the electrolyte input channels passes through the flow blocking cavity of the sealing device, the electrolyte is integrated and then flows into the machining area, then flows to the current collection area arranged in the cathode clamping block through the built-in plastic insulation device of the tool cathode, and finally flows out of the electrolyte output channel. Through the double-sided multi-feature integrated forming electrolytic machining technology, the machining efficiency and machining precision can be improved; the electrolyte flow channel adopting the reverse flow type flow field design can effectively improve the uniformity of the flow field.

This invention relates to the field of welding deformation prevention technology and provides a welding deformation prevention and fixing device for membrane wall tubes. The device includes a welding table with a fixing frame fixedly connected to it. The fixing frame has a fixing mechanism, and the fixing mechanism contains a cooling channel that can be connected to an external water-cooling tank via a water pipe and pump. The device also includes a control system comprising a clamping pressure adaptive control module. This module constructs an adaptive control model based on a reference clamping force, transient instability probability, and current wall tube vibration intensity, outputs a dynamic clamping force setpoint, and controls the fixing mechanism. This invention can dynamically adjust the clamping force of the fixing mechanism according to the transient instability probability and real-time vibration intensity of the membrane wall tube during welding. This makes the clamping force no longer a static preset value but can respond in real time to dynamic changes during welding, effectively addressing the problem of insufficient static constraint force when instantaneous thermal stress or vibration intensification occurs.

The present application belongs to the technical field of mechanical cutting tool manufacturing, and particularly relates to a micro-textured tool based on laser micro-cladding in-situ forming, a preparation method and application thereof. Specifically, the present application successfully prepares a multi-layer coated tool with a micro-textured morphology. The tool has the advantages of micro-texture, laser cladding layer and multi-layer coating structure, and has high hardness, good self-lubricating performance, good toughness, strong coating adhesion and small internal stress of the coating, and will not produce defects such as deformation or micro-cracks of the tool substrate material. In the cutting process, the tool can effectively reduce the cutting force and cutting temperature, reduce tool wear and improve tool life, and can be widely applied to dry cutting and cutting of difficult-to-machine materials, and therefore has good practical application value.

The utility model relates to the technical field of cutter production, provide a kind of hard alloy cutter fine grinding tool, including bottom plate, the bottom plate is provided with polishing part, the bottom plate is provided with clamping assembly, the clamping assembly is used to clamp workpiece to be processed;The polishing part includes installation part and polishing part, one end of the installation part is fixedly connected with one end of polishing part, one side of the polishing part is set as cambered surface, the projection of the cambered surface is towards the recess of workpiece to be processed and is set;The end of the installation part away from polishing part is provided with sliding portion, the sliding portion is slidably arranged on the bottom plate along the length direction of bottom plate, the length direction of the polishing part is parallelly arranged with the length direction of bottom plate, the utility model can improve the processing effect of double-end hard alloy cutter bottom burr.

The invention relates to the technical field of circuit board processing, in particular to a pneumatic vibration main shaft for circuit board processing and a circuit board drilling method. The main shaft comprises a main shaft shell, a floating rotating shaft and a pneumatic vibration assembly. The pneumatic vibration assembly is provided with a first air pressure cavity and a second air pressure cavity which are oppositely arranged in the axial direction of the floating rotating shaft, and a first air path and a second air path which are communicated with the two cavities and can independently control air pressure. By controlling the air pressure of the two air paths, a controlled air pressure difference is formed between the two cavities, so that the floating rotating shaft is driven to generate axial reciprocating vibration. Axial micro-vibration of the drill point is achieved through the pure pneumatic principle, chip removal in the drilling process is effectively promoted, the hole wall quality and the drilling precision are improved, and the system is simple in structure and high in anti-interference capacity.

This utility model relates to the field of mold technology and discloses a burr relief groove structure inside a mold, including a strip and a lower mold plate. The strip is movably connected to the top of the lower mold plate. Multiple trimming punches are provided inside the lower mold plate. Burr relief grooves are machined around the trimming punches. A floating pin is movably connected inside the lower mold plate. The top of the floating pin is in contact with the bottom of the strip. Equidistant stepping is achieved through positioning holes, floating pins and a feeding mechanism. The lower mold plate provides a precise assembly reference to ensure the positional accuracy of the trimming punches and the strip. The burrs generated by the trimming punches are collected by the burr relief grooves and discharged with the strip, ensuring smooth feeding and stable and efficient operation of the continuous stamping process. The final product is a high-precision stamped part, which can reduce surface defects, improve the appearance quality and dimensional accuracy of the product, and reduce quality problems such as product damage.

The utility model relates to cross -film self -adhesion waterproof roll material technical field, concretely is a kind of cross -film self -adhesion waterproof roll material production equipment, it includes production table, preheating tensioning mechanism, cooling mechanism and sliding block: preheating tensioning mechanism is set in the end of production table;Cooling mechanism is set in the top of workbench;Sliding block is slidably arranged on preheating tensioning mechanism.The utility model is through the setting of winding assembly and preheating tensioning mechanism, motor one is rotated winding by winding roller and is rolled, motor two drives the air in preheating roller to flow quickly to thus accelerate the preheating of preheating roller, spring two and spring three can be according to the size of roll material adjust the position of pressing plate and preheating roller, like this can ensure that roll material keeps flat in production process, avoid the wrinkle, deformation or thickness uneven caused by slackening, to improve the appearance quality and size precision of roll material, and make roll material base material and glue layer heat consistent, avoid the performance difference caused by local overheating or supercooling.

The utility model discloses a kind of double-end punching positioning tool of cylindrical guardrail rail, is related to guardrail auxiliary processing device technical field, including fixed frame and bracket set on fixed frame;Bracket is provided with the supporting groove for the guardrail rail clamping into;The supporting height of supporting groove is consistent with the clamping height of puncher, so that the guardrail rail supported between the two is kept horizontal;Two side walls of supporting groove are oppositely provided with positioning hole, and the diameter of positioning hole is same with the diameter of punching;Positioning pin is detachably installed in positioning hole;When the punching of one end of guardrail rail is completed, punch the other end, overturn guardrail rail, adjust the punching of guardrail rail to make it align with positioning hole, then install positioning pin between the two again.By setting fixed frame and bracket, bracket is provided with supporting groove, positioning hole is set on the two side walls of supporting groove, and positioning pin is detachably installed in positioning hole, solve the problem of error existing in manual visual inspection or measurement, improve guardrail rail processing precision and installation quality.

The invention relates to the technical field of surface coating fluid equipment, in particular to an automatic gluing and stretching device for a photovoltaic frame. The device comprises a rack, a tension system, an automatic gluing system and jacking equipment, wherein the tension system realizes uniform tensioning of a silk screen through a longitudinal stretching module and a transverse stretching module; the automatic gluing system completes efficient gluing through a three-dimensional moving mechanism and a coating assembly and has a cleaning function. And the operation stability and accuracy are ensured through the jacking equipment. The device achieves the effects of improving the production efficiency, ensuring the product quality and reducing the labor cost.

This invention discloses a welding positioning device and its forming method for training missiles. The welding positioning device includes: a missile body welding fixture, a pouring fixture, a tail fin welding fixture, and two centers. Each of the two centers consists of a frustum and a round rod coaxially fixed to the large-diameter end of the frustum. The two centers are respectively used to hold the inner hole of the missile body's central tube and the positioning sleeve. The missile body welding fixture is used to weld and position the missile head and cylindrical section, and the missile head and mounting sleeve. The pouring fixture is used for pouring and forming concrete inside the conical section of the missile body. The tail fin welding fixture is used to weld and position the tail fin and the conical section, and to ensure the relative angle between the tail fin blades and the positional relationship between the blades and the missile body axis. This invention can ensure the welding quality and welding accuracy of the training missile, thereby ensuring coaxiality, symmetry, and straightness.

The utility model relates to press machine stamping die equipment, which relates to the technical field of filter stamping processing, and comprises a base, a press machine body fixed above the base, an operating handle arranged on the press machine body, a transmission device, a stamping head and a die arranged above the base, a forming cavity is formed in the mold, a lower forming plate, an upper forming plate and a punching plate are sequentially arranged in the forming cavity from bottom to top, a plurality of punch forming rods are fixed below the punching plate, and punching holes matched with the punch forming rods are formed in the lower forming plate and the upper forming plate; an ejection hole is formed in the bottom of the mold from bottom to top. The method has the effect of improving the processing efficiency and the yield of the filter sheet.

This utility model discloses a trimming and cutting device for particleboard production, including a U-shaped bottom hollow frame, sponge rollers rotatably mounted at the front and rear positions inside the U-shaped bottom hollow frame via bearing seats, a drive shaft rotatably mounted on one inner wall of the U-shaped bottom hollow frame, and an external spline shaft rotatably mounted on the inner wall of the U-shaped bottom hollow frame below the drive shaft. A left cutting disc is fixed to one end of the external spline shaft near the inner wall of the U-shaped bottom hollow frame. A three-gear speed-increasing transmission structure is installed between the drive shaft and the external spline shaft. This utility model controls the positions of the L-shaped shaft carrier, T-shaped hollow bushing, internal spline shaft, and right cutting disc via a control panel and an X-axis lead screw electric module. After adjustment, the motor transmits power to the external spline shaft and internal spline shaft, causing the left and right cutting discs to rotate synchronously. The operator manually pushes the particleboard until the left and right cutting discs synchronously trim the edges of the particleboard.

This application provides a method for processing an optical component with a light-reflecting cavity, comprising the steps of: processing a first coated component and a second coated component; processing two plates having the same reference surface on the same disc, positioning them using the reference surface, and processing the two plates respectively to obtain a third coated component and a fourth coated component; providing an assembly fixture to position the first coated component and the third coated component, fixing the bottom surface of the third coated component to the surface of the first coated component; positioning the second coated component using the assembly fixture, and bonding the surface of the second coated component to the third coated component and the fourth coated component. This method solves the problem that the processing of optical components in the prior art is difficult to achieve high-standard quality requirements.

The application belongs to the technical field of laser cutting, and particularly relates to a steel structure profile laser cutting device, which comprises a workbench and a laser cutting head. An feeding assembly for clamping and conveying profiles is arranged on the workbench. The feeding assembly drives the profiles to move horizontally and rotate, so that the profiles move relatively with the laser cutting head. A work-type adaptive slag blocking mechanism is arranged on the workbench. The work-type adaptive slag blocking mechanism comprises a rectangular frame. The work-type adaptive slag blocking mechanism is used to fundamentally eliminate the situation that the laser beam needs to melt the solidified slag during subsequent cutting, so that the laser energy can directly and stably act on the profile surface, and the problems of rough section, slag hanging at the bottom and the like caused by slag scattering and surface state mutation are effectively avoided.

The invention relates to an attached photoelectric health monitoring device and method based on a photoelectric detector, and the device comprises an ultrathin flexible substrate which is made of Parylene-C; the S-shaped interconnection electrode is formed on the ultrathin flexible substrate; the perovskite photoelectric detection layer with the two-dimensional Ruddlesden-Popper structure is regionally deposited on the snakelike interconnected electrode, and the general formula of the perovskite photoelectric detection layer is (PEA) 2 (MA) < n > < 1 > Pb < n > I < 3 > < n > < 1 >; the LED light source is arranged on the ultrathin flexible substrate, and the LED light source and the two-dimensional Ruddlesden-Popper structure perovskite photoelectric detection layer are located on the same plane to form a reflective detection mode; and the packaging layer covers the two-dimensional Ruddlesden-Popper structure perovskite photoelectric detection layer and the LED light source, the material of the packaging layer is Parylene-C, and the packaging layer and the ultrathin flexible substrate jointly form a symmetrical double-layer packaging structure. Compared with the prior art, the invention has the advantages of high fitness and comfort, high sensitivity, quick response, high environmental stability and mechanical durability, low power consumption, high signal-to-noise ratio, high signal quality and detection precision and the like.

This utility model belongs to the field of automotive charging gun manufacturing technology, specifically disclosing a pneumatic wire cutting machine for automotive charging gun production. The pneumatic wire cutting machine includes a lower shearing blade and an upper shearing blade internally. A fixing block is fixedly connected to the surface of the pneumatic wire cutting machine. A transmission groove is formed inside the fixing block, and a disc is rotatably connected inside the transmission groove. The surface of the disc is provided with teeth, and two arc-shaped grooves are formed on the surface of the disc. Transmission blocks are slidably connected inside both arc-shaped grooves. Through the cooperation of the arc-shaped clamping plate and the transmission rod, the cable can be accurately positioned and firmly fixed at the preset cutting position, ensuring that all cut cables have consistent lengths, smooth cut surfaces, and no burrs. This greatly improves the product quality consistency and pass rate of charging gun production, reduces operation time, lowers labor intensity, and increases production efficiency.

This invention discloses a high-alloy high-performance rotary guide component and its manufacturing method, belonging to the field of stainless steel technology. It solves the problems of poor microstructure uniformity and inability to simultaneously achieve mechanical properties and stress corrosion resistance in existing rotary guide components. The manufacturing method includes: smelting molten steel; preparing ingots; forging the ingots into steel billets using a high-speed forging machine after they are tapped from the furnace; heating and holding the steel billets; forging the steel billets into intermediate billets using a radial forging machine; water cooling the intermediate billets; forging the water-cooled intermediate billets a second time using a radial forging machine, followed by air cooling to obtain finished steel billets; straightening, machining, and shot peening of the finished steel billets to obtain rotary guide components; the composition of the rotary guide components, by mass percentage, includes: 18.00% ≤ Cr < 28.00%, 3.00% ≤ Mo ≤ 6.00%, 14.00% ≤ Ni ≤ 20.00%, 3.00% ≤ Mn ≤ 8.00%, Si ≤ 0.4%, Nb ≤ 0.25%, P ≤ 0.025%, S ≤ 0.02%, C ≤ 0.03%, N ≥ 0.3%, with the balance being Fe and other unavoidable impurities. The rotary guide components of this invention have fine and uniform grains and excellent mechanical and corrosion resistance.

This utility model relates to the field of steel strip production, and particularly to an edge burr removal device for steel strip production. It includes a support frame with a protective cover mounted on it. The protective cover has a conveying assembly for transporting the steel strip. Inside the protective cover is a scraping assembly for removing edge burrs from the steel strip. The scraping assembly includes mounting boxes symmetrically installed inside the protective cover. This edge burr removal device for steel strip production can adaptively adjust the scraper position in real time according to the edge condition of the steel strip and the wear of the scraper blade. Combined with a stable conveying assembly, it achieves continuous, efficient, and precise burr removal, significantly improving the surface quality and dimensional accuracy of the steel strip and reducing the product defect rate. The height of the scraping assembly can be flexibly and precisely adjusted by adjusting the assembly, allowing the device to adapt to steel strips of different thicknesses, enhancing its versatility. Simultaneously, stable operation reduces equipment wear, lowers equipment replacement and maintenance costs for enterprises, and improves equipment utilization.

This utility model relates to the field of ceramic sintering technology and discloses an alumina ceramic substrate sintering kiln, including a base and a sintering kiln body. The top of the base is provided with a shelf for placing alumina ceramic substrates, and the shelf can move in and out of the base along the top side of the base. Two limiting rails are fixedly installed on the top side of the base corresponding to the shelf, and the limiting rails serve as the moving path of the shelf. Multiple sets of baffles are provided at the openings on both sides of the sintering kiln body to minimize the heat loss from the kiln. This alumina ceramic substrate sintering kiln can heat and sinter the alumina ceramic substrate from the bottom through heat transfer holes, thereby avoiding uneven heating of the bottom side of the substrate. Furthermore, through the transverse and longitudinal through holes that are interconnected with the heat transfer holes, a three-dimensional heat convection channel can be formed to further optimize the heat distribution, ensure that each substrate layer is heated evenly, and improve the overall sintering quality and forming accuracy.

The application discloses a kind of based on CatBoost regression model's chlorine ion diffusion coefficient prediction method.The method first collects measured sample data and carries out data cleaning, ensure the quality of data.Subsequently, by LASSO regression feature selection method, the feature that has significant contribution to target value is screened out, and the optimal feature coefficient is selected using cross validation.Then, define regression model evaluation function.Then, using CatBoost regression model is trained, and the hyperparameter is optimized by grid search, and the best model parameter is obtained.Prediction is carried out on training set and test set, and model evaluation index is calculated and output, finally, fitting effect diagram and residual plot are drawn, show the prediction ability and error distribution of model.By combining LASSO feature selection and CatBoost regression model, the application improves the prediction accuracy and stability of chlorine ion diffusion coefficient, and can effectively handle complex regression problems.

This invention relates to the field of corrugated pipe processing technology, specifically disclosing a circumferential cutting device for corrugated pipe processing. The device includes a main body with an inlet and an outlet at both ends. A fixing plate is mounted on the outer wall of the main body near the inlet, and a cleaning mechanism is located at the bottom of the fixing plate. Two rotating frames are mounted on the outer wall of the main body near the outlet, one of which has a detection mechanism. A traction mechanism is also located at the end of the main body near the outlet. In this invention, before the corrugated pipe enters the main body for circumferential cutting, the cleaning mechanism automatically cleans impurities adhering to the outer wall of the corrugated pipe. This prevents impurities from affecting the visual positioning system's recognition, thus avoiding a decrease in the cutting efficiency of the device. This improves the cutting quality and accuracy of the corrugated pipe, thereby simultaneously enhancing the reliability of the main body.

This utility model discloses a sliding guide centering device for a high-speed wire rod finishing mill, belonging to the field of high-speed wire rod production technology. It is installed on the roll box panel of the guide seat and includes a first slide rail, a second slide rail, a third slide rail, a first centering clamping plate, a second centering clamping plate, and a third centering clamping plate. The first centering clamping plate is slidably connected to the first slide rail via a first slider, the second centering clamping plate is slidably connected to the second slide rail via a second slider, and the third centering clamping plate is slidably connected to the third slide rail via a third slider. The first centering clamping plate includes a first square plate and a first centering portion in the shape of an isosceles trapezoid. The second centering clamping plate includes a second square plate and two second centering portions in the shape of isosceles triangles. The third centering clamping plate includes a third triangular plate and a third centering portion in the shape of an isosceles trapezoid. All three centering clamping plates can be moved left and right and their positions can be finely adjusted forward and backward. This utility model solves the problem of unstable centering of the sliding guide in existing high-speed wire rod finishing mills.

The invention belongs to the technical field of radars, and particularly relates to a phased array radar based on a multi-phase oscillator, a positioning method, a system and application. The phased array radar comprises an array antenna, a multi-phase oscillator, a gate and a signal receiver. Wherein the array antenna is composed of a plurality of antenna units; the multi-phase oscillator comprises a plurality of injection nodes with equal phase difference. And the gating device is used for sequentially connecting each antenna unit to one injection node of the multi-phase oscillator according to a preset optimal phase difference. And the signal receiver is connected with the output end of the multi-phase oscillator and is used for demodulating an echo signal output by the multi-phase oscillator. The antenna units and the injection nodes are distributed by adjusting the gating logic of the gating device, and then beam forming is carried out on echo signals so as to change the direction of the azimuth angle of the echo signals. According to the invention, the problems of large circuit overhead, high design difficulty and insufficient noise and sensitivity of the existing phased array radar are solved.

The utility model discloses a mould structure capable of solving gas marks at a sprue, which comprises an upper mould base and a lower mould base, a guide mechanism is connected between the upper mould base and the lower mould base, the upper side of the lower mould base is fixedly connected with a fixed mould, the lower side of the upper mould base is fixedly connected with a movable mould, both the fixed mould and the movable mould are provided with cavities, and the cavities are communicated with the guide mechanism. A pouring hole is formed in the upper die base, and the upper side of the upper die base is fixedly connected with a pouring guide pipe communicated with the pouring hole. According to the utility model, smooth discharge of gas can be ensured, gas marks caused by retention and accumulation of the gas are avoided, the appearance quality and the molding precision of an injection product are effectively improved, the flowability of molten plastic can be improved, and the pouring smoothness of the mold is effectively improved.

The invention belongs to the technical field of laser cutting, and particularly relates to a high-precision three-dimensional laser cutting machine which comprises a placing frame, a moving assembly arranged on the upper side wall of the placing frame, and a laser cutting head connected to the moving end of the moving assembly, and the clamping assembly is arranged on the upper side wall of the containing frame and located on the left side of the laser cutting head, the clamping end of the clamping assembly is connected with a square pipe, and the square pipe is located below the laser cutting head. When the three-dimensional laser cutting machine is used for cutting the square pipe, the inner walls of the edges and corners of the pipe are coated with the heat absorption coating in advance, redundant laser energy gathered at the edges and corners can be effectively absorbed, the phenomena of local heat concentration, overburning and melting collapse are reduced, meanwhile, damage of laser reflection to a cutting head and a light path is reduced, the problems of notch burrs and slag adhering are solved, and the service life of the cutting head is prolonged. And the square tube corner angle cutting section quality and size precision are improved.