162 results about "Ring laser" patented technology

The invention discloses a laser-TIG (Tungsten Inert Gas) hybrid welding and method based on ultrasonic-assisted wire powder coaxial conveying, after entering, a laser beam forms a semicircular Bessel beam through a lens, a metal wire passes through an ultrasonic-assisted device and then introduces vibration into a welding pool, and six powder conveying guide pipes are uniformly distributed around the metal wire; according to the wire core six-way powder channel coaxial device, a semi-circular light beam passes through the wire core six-way powder channel coaxial device and enters a laser head, and finally the effect of coaxially melting a wire powder material through laser is achieved. A TIG welding auxiliary device is added to one side of a molten pool, metallurgical reaction is promoted, and compactness of a welding seam is improved. The device mainly comprises an annular laser beam wire core six-way powder channel simultaneous melting system, an automatic wire feeding system, a powder feeding system, an ultrasonic vibration system, a TIG auxiliary welding system and the like. The welding efficiency can be improved through the wire core six-way powder channel coaxial melting technology, the flowing stability of a molten pool can be promoted through the ultrasonic-assisted technology, and the welding seam forming quality can be improved through laser-TIG composite welding.

This application relates to a laser-plasma composite cladding head and a composite cladding method, and belongs to the field of surface processing of metallic materials. In the laser-plasma composite cladding head of this application, a ring laser beam is split into two half-ring laser beams through an upper roof lens to avoid a tungsten electrode. The two half-ring laser beams pass through a left 45° reflective lens to be coaxial with the tungsten electrode and then are integrated into a complete ring laser beam through a lower roof lens, thereby allowing a coaxial output of the ring laser beam and a plasma beam. This application integrates the advantages of laser cladding and plasma cladding and adopts coaxial compounding and synchronous powder-feeding.

The invention discloses a coaxial composite laser welding method and a welding method of a flat wire motor winding, and relates to the technical field of laser welding, coaxial composite laser beams are adopted to act on the surface of a high-reflection material to form a welding pool, the coaxial composite laser beams comprise an outer ring laser beam and a core laser beam, the outer ring laser beam is a pulse laser beam, and the core laser beam is a core laser beam; the core laser beam is a continuous laser beam, the continuous laser beam forms a main molten pool, the pulse laser beam forms an auxiliary molten pool, and the main molten pool and the auxiliary molten pool have overlapped parts. The continuous laser and the pulse laser are combined, the main molten pool formed by the continuous laser and the auxiliary molten pool formed by the pulse laser are communicated in an overlapped mode, the pulse laser disturbs molten metal in the auxiliary molten pool and drives the molten metal in the main molten pool to achieve the oscillation stirring effect, and the laser energy absorption efficiency of the high-reflection material can be improved; and the energy distribution of the heat source can be optimized by adjusting the energy proportion and the focus point position, the energy state of the heat source is accurately controlled, and zero splashing is achieved.

The invention provides a narrow gap welding device and method based on molten drop coaxial composite ring laser, and is suitable for high-precision narrow gap welding. The device comprises a welding wire melting system, an annular light beam system, a wire feeding system, a water cooling suite, a molten metal control assembly and a gas pressure system. The welding wire melting system heats a metal welding wire through an induction heating coil to generate molten drop jet flow, and the annular light beam system generates a molten pool. The molten drops vertically drop into a molten pool of the narrow-gap workpiece in a jet flow mode through the molten metal control assembly, and a high-quality welding seam is formed. The control system monitors the size of the gap in real time through the laser contour scanner and adjusts the electronic adjustable nozzle so as to control the size and flow of molten drops. The welding wire is melted through the induction heat source to generate molten drops, the problem of strong coupling between the welding wire and laser is successfully solved, heat input in the welding process is remarkably reduced, and therefore deformation and defects in narrow gap welding are reduced.

The utility model discloses a high-order transverse mode controllable space-time mode locking all-fiber laser, which relates to the field of fiber lasers and comprises an annular laser system and a feedback system. The ring laser system comprises a laser diode pumping source, a wavelength division multiplexer, a gain fiber, a high-order transverse mode generation module, a multi-mode output coupler, a saturable absorber, a polarization controller, an isolator and an out-of-cavity coupler. The feedback control system comprises an image acquisition module, an image processing module and a feedback control circuit. Space-time mode locking is achieved based on the all-fiber saturable absorber, and the device has the advantages of being simple in structure, small in environmental influence, good in stability and the like. By inserting the multi-core multimode optical fiber and the conical multimode optical fiber into the all-fiber mode-locked laser, excitation of a high-order transverse mode and screening of the high-order transverse mode are effectively achieved. By externally connecting a feedback control system, the high-order transverse mode output by the laser is selected, and the space-time mode-locked all-fiber laser with controllable output high-order transverse mode is effectively realized.

The invention discloses a brake pad cutting device and a cutting method thereof, and relates to the technical field of brake pad cutting, the brake pad cutting device comprises a machine tool, a conveying assembly, a cutting assembly and a fixed-point cutting assembly.By flexibly adjusting the position of a trepanning laser nozzle, the trepanning requirements of different positions on a brake pad are met, and the size of a hole is flexibly adjusted; the electromagnet is started to generate magnetic force with the same polarity as the magnetic block, the magnetic block is pushed to rotate through repulsive force, rotation and positioning of the magnetic block are achieved under cooperation of the check block, the position of the rotating disc is adjusted, and cutting at different positions is achieved; the number of the magnetic blocks can be adjusted according to the number of actually-needed holes by controlling a fifth electric push rod to drive the magnetic blocks with the needed number to move outwards, the positions of an outer ring laser spray head and an inner ring laser spray head are adjusted, and an outer contour and an inner contour are cut on a brake pad raw material. All cutting operations can be completed through one-time positioning, and accumulative errors caused by multiple times of positioning are reduced.

The utility model relates to the technical field of underground drill rigs, in particular to a crawler-type full-hydraulic underground drill rig convenient to position, which comprises a drill rig chassis, a fixing frame is arranged at the top of the drill rig chassis and close to the left end, an adjusting seat is slidably connected to the inner side of the fixing frame, and an adjusting mechanism is mounted on the fixing frame. A lifting frame is arranged above the adjusting seat, a lifting mechanism is arranged at the bottom of the lifting frame, a control mechanism is arranged above the lifting frame and comprises a control frame and a guide frame, a hydraulic motor is arranged at the top of the guide frame, a drill rod is connected to the left side of the hydraulic motor, an annular laser device is arranged on the outer side of the drill rod, and the annular laser device is connected to the left side of the hydraulic motor. Supporting mechanisms are arranged on the front side and the rear side of the drilling machine chassis. According to the drilling machine, the whole drilling machine can be prevented from being adjusted, the adjusting process is rapid and convenient, the drilling position of the drilling rod is positioned and indicated through the annular laser, and the drilling accuracy of the drilling rod is guaranteed.

The embodiment of the invention discloses an adjustable ring laser welding system and method based on intelligent laser-assisted wire filling. According to the method, a laser emitting module is used for emitting a corresponding laser beam to the surface of a welding piece, and the shape of the laser beam is adjustable and annular; the wire filling module is used for conveying welding wires to the welding part; and the feedback module is used for acquiring the temperature and morphology in a molten pool corresponding to a welding part in the welding process to generate corresponding real-time monitoring data, and determining a feedback signal of the laser emission module and a feedback signal of the wire filling module based on the real-time monitoring data. According to the embodiment of the invention, intelligent and self-adaptive adjustment of the welding process can be realized through multi-dimensional information fusion and closed-loop control, the dependence on skills of operators is reduced while the welding quality is improved, and the production efficiency and the product yield are improved.

The invention discloses a method and equipment for detecting a getter of a ring laser based on machine vision, and belongs to the technical field of laser gyroscope detection. According to the method, the thin film image of the getter is collected, the consumption condition of the getter is recognized by combining the color fading property of the getter after the getter reacts with the impurity gas, meanwhile, the getter parameter and the activation parameter of the ring laser are calculated according to the working condition data of the ring laser during standing and working, and the residual gas capacity of the getter is predicted based on the activation parameter. And combining the suction parameters to fit a suction characteristic function of the ring laser, and further predicting the remaining working time of the getter. According to the method, products with unqualified getter allowance can be effectively screened out, and the application reliability of the ring laser in the fields of aviation, spaceflight and the like is improved.

The invention discloses a solidification melting zone thermal compensation repairing device and method for adjusting a heat source mode, and belongs to the technical field of metal part repairing. In the traditional Gaussian laser single crystal repairing process, columnar crystal orientation isometric crystal transformation can be induced due to the violent heat dissipation effect on the top of a molten pool and the component supercooling effect of the solidification front edge, new crystal grains preferentially nucleate and grow on the top of the molten pool, and the mixed crystal defect on the top of a repairing layer is caused. The scheme that annular laser is adopted as main laser, a thermal compensation auxiliary laser beam and a zoom laser beam expander are added for cooperative regulation and control is provided, the temperature gradient and the cooling speed of a molten pool are controlled by accurately adjusting a heat source energy distribution mode, the tendency of columnar crystal orientation isometric crystal transformation is restrained, and the quality of the molten pool is improved. And mixed crystal defects at the top of the repair layer are eliminated. Compared with an existing method, the method is large in process window and good in parameter adaptability; the material application range is wide, and the repairing requirements of different alloy systems can be met; equipment adjustment is simple, and industrial application is easy to achieve.

A semiconductor tunable ring laser including a laser cavity having a closed loop optical path, and an optical filter that is arranged within the laser cavity. The optical filter includes a first MZI-based tunable frequency filter section including a 1×3 MMI input splitter providing a first non-zero fraction, T1, of optical radiation at a first optical output port of the 1×3 MMI for wavelength locking and / or power monitoring purposes outside of the laser cavity, a second fraction, T2=(1−T1) / 2, of optical radiation at a second optical output port of the 1×3 MMI, and a third fraction, T3=(1−T1) / 2, of optical radiation at a third optical output port of the 1×3 MMI. A PIC including the semiconductor tunable ring laser, and to an opto-electronic system including such a PIC.

The present invention relates to the technical field of laser welding. Disclosed are a method for establishing a point-ring laser welding heat source model, a system and a medium. A point-ring laser is composed of point light of a central laser body heat source and ring light of an annular laser surface heat source, the point light is used for achieving a weld seam having a high depth-to-width ratio for a welded material, and the ring light is used for achieving auxiliary heating and slow cooling for the welded material. According to the method for establishing a point-ring laser welding heat source model provided in the present invention, the laser power ratio of the point light to the ring light in the model can be regulated and controlled according to any proportion, the defocusing amounts of the point light and the ring light can be separately controlled, and spot parameters such as point light spot diameter and ring light spot diameter can be used for effectively expressing heat flux density distribution. The method for establishing a heat source model provides a powerful reference basis for accurately simulating a temperature field, a stress field and a deformation field of point-ring laser welding. On the basis of regulation and control of a welding path, the present invention can be widely applied to the field of finite element simulation of point-ring laser linear welding and weaving welding.

The invention discloses an SLM printed metal part high-efficiency and high-precision forming quality optimization method based on a point ring laser, which comprises the following steps: S1, dividing a three-dimensional model of a to-be-formed metal part into a core region, a lap joint region and a shell region, and slicing the three-dimensional model of the to-be-formed metal part, obtaining slice information of each slice layer; s2, dynamically adjusting the overlap amount of a transition area according to the geometrical characteristics of the three-dimensional model; and S3, a point ring laser is adopted for sequentially conducting selective laser melting forming on all the slice layers according to the slice information of all the slice layers, and then SLM forming of the to-be-formed metal part is completed. On the basis, the printing quality of the to-be-formed metal part is improved on the basis of ensuring high efficiency and high precision of the SLM printing metal part.

The invention discloses a probing type pipe fitting inner wall welding seam positioning device which comprises a cylindrical shell and a conical shell, the conical shell is arranged at one end of the cylindrical shell, and an annular laser and an optical camera are arranged on the conical shell so as to position a pipeline inner wall welding seam; the cylindrical shell is connected with the right-angle fixing support, and the cylindrical shell is installed through the right-angle fixing support. The optical camera is installed on the conical shell through a camera support, and the camera support is used for adjusting the pitching angle of the optical camera through a C-shaped sliding groove and a camera support positioning pin. According to the probing type pipe fitting inner wall welding seam positioning device, after the angle of the camera is fixed, welding seam detection can be conducted on pipelines within a certain inner diameter range, the C-shaped sliding groove is connected to the tail of the camera so as to adjust the pitching angle of the camera, and the detection range can be adjusted; due to the flexibility, the equipment can be widely applied to pipeline welding seam detection occasions with various inner diameter ranges.

The invention discloses an O-band harmonic mode-locked laser based on double-pumping nonlinear polarization evolution, which comprises a first pumping source, a second pumping source, a first wavelength division multiplexer, a second wavelength division multiplexer, a gain fiber, a first polarization controller, a polarization dependent isolator, a second polarization controller and a coupler, which form a bidirectional pumping ring laser resonant cavity. Wherein the first polarization controller and the second polarization controller are arranged on the two sides of the polarization dependent isolator respectively to form a nonlinear polarization evolution mode locking structure together. By improving the power of the double pumping sources and adjusting the polarization state in the cavity, switching from fundamental frequency mode locking to multi-order harmonic mode locking can be achieved, the highest order can reach 33, the repetition frequency upper limit of an O-band all-fiber mode-locked laser is broken through, and the all-fiber mode-locked laser has the advantages of being compact in structure, high in damage threshold, low in cost and easy to integrate all fibers and is suitable for the field of optical communication and the like.

The invention provides a multi-focus point ring light spot generation system and a laser welding method, and belongs to the technical field of laser machining. The system comprises an annular light source, a first collimating lens, an annular light beam generation module and a first reflecting mirror which are sequentially arranged at intervals along a first linear direction, and a point light source, a second collimating lens, a first focusing mirror, a multi-curvature hollow reflecting mirror and a second focusing mirror which are sequentially arranged at intervals along a second linear direction, the center of the multi-curvature hollow reflecting mirror and the center of the second focusing mirror are provided with through holes for light beams emitted by the point light source to penetrate through, and the mirror surface curvature of the multi-curvature hollow reflecting mirror is adjustable. The technical problems of high processing cost and poor deep welding stability caused by structural limitation of a point ring laser in the prior art can be solved.

The utility model discloses a ring piece rapid roundness correction device which comprises a base, a first round rod arranged on the base, a first sliding sleeve sleeved on the first round rod, a height adjusting mechanism arranged on the first sliding sleeve, a second sliding sleeve fixed on one side of the first sliding sleeve, a second round rod arranged in the second sliding sleeve in a penetrating mode, and a third sliding sleeve sleeved on the other end of the second round rod. A fourth sliding sleeve is fixed to one side of the third sliding sleeve, the lower end of a third round rod penetrates into the fourth sliding sleeve, a transverse sleeve is fixed to the top end of the third round rod, the rear end of a fourth round rod penetrates into the transverse sleeve, a laser base is hinged to the front end of the fourth round rod, and the laser base and the fourth round rod can be fixed after a screw on a hinge point of the laser base is tightened. And a large circular ring laser is fixed on the laser seat. The rapid roundness correction device for the ring piece can project a standard large circular ring, and can match the large circular ring to the inner ring and the outer ring of the ring piece by adjusting the height and the position of the large circular ring laser, so that the roundness of the ring piece can be rapidly corrected by referring to the standard large circular ring.

The present invention discloses a tower crane verticality detection method, including the steps of installation, remote control transposition, laser measurement, etc., and also discloses a detection device applied to the above detection method, including an annular laser target placed on the tower crane base and an annular fixture installed on the tower crane, the upper surface of the annular laser target is provided with scale lines, the bottom of the annular fixture is provided with an annular beveled tooth groove, and the annular fixture is provided with an annular sliding cavity. The present invention realizes multi-directional and multi-point detection by adopting annular mobile control detection, improves the measurement accuracy, and can quickly fix the annular fixture by isobaric clamping, so that the annular fixture can rise with the tower crane without additional lifting, and can quickly disassemble and assemble the laser detector for verticality detection through a detachable structure, the operation is simpler, the vertical angle can be quickly obtained by the position of the laser point on the annular laser target, and detection can be performed continuously without correction, which reduces the threshold for use.

The application discloses a rare earth ion doped lithium niobate micro-ring laser and a preparation method thereof, and utilizes femtosecond laser direct writing combined with chemical mechanical polishing technology to prepare a micro-ring and a coupling waveguide shape on the surface of a lithium niobate film doped with rare earth ions, and further realizes a micro-ring laser on a lithium niobate sheet. The application can realize low-cost mass production of the micro-ring laser on the sheet, and has important significance in optical communication, photonic integrated circuit, precision measurement and large-scale sensing and the like. Meanwhile, the laser based on the thin film lithium niobate micro-ring can generate multi-mode laser near multiple wave bands, and is a multi-wave channel light source with wide application prospect in optical communication and biosensors.

This invention discloses a laser cladding titanium alloy coating on an aluminum alloy substrate and its preparation method. The invention uses a self-developed small-beam, high-energy ring laser to replace the traditional laser, enabling effective metallurgical bonding between the aluminum alloy substrate and molten titanium alloy powder to form a fusion layer. This fusion layer then facilitates the successful preparation of a high-performance titanium alloy coating on the aluminum alloy surface. The prepared laser cladding coating exhibits a dense overall structure, free from defects such as cracks and pores. The aluminum alloy substrate remains undeformed, demonstrating high interfacial bonding strength and excellent wear and corrosion resistance. It effectively resists the attack of chloride ions from atmospheric and marine environments on the aluminum alloy substrate, thereby significantly extending the service life of aluminum alloy components. This invention overcomes the challenge of preparing titanium alloy coatings on aluminum alloy surfaces using laser cladding, and also provides a new approach and theoretical basis for metal protection, showing promising application prospects.

A system and method for generating ultra-short pulses intended to be inserted into a ring laser with a regulator of a pulsed signal of a certain intensity, the system includes an optical attenuator that allows the intensity of the pulsed signal to be adjusted at the input of an optical guide section, and a distributed amplification device inserted in the optical guide that make it possible to manage the power of the signal therein, so that it propagates as solitons or as self-similar pulses without suffering unwanted distortions despite the increase in the length of the laser cavity, increasing the power of the pulsed signal and making it possible to exceed the usual power limits of this type of laser.

The invention is suitable for the technical field of laser processing, and provides a welding method and a laser device.According to the welding method, a flat nail is welded to a cover plate of a battery cell through annular laser beams emitted by the laser device, the annular laser beams comprise the first laser beam and the second laser beam, the first laser beam is a center point laser beam, and the second laser beam is a center point laser beam; the second laser beam is a hollow ring laser beam, and the first laser beam is located in the second laser beam; the first laser beam and the second laser beam emit light periodically and synchronously, and the peak pulse width of the second laser beam is larger than that of the first laser beam. According to the embodiment, the surface cracking probability of the flat nail can be reduced, the number of cracks generated in the welding process is reduced, and the welding quality is improved.

The present invention discloses a calibration method for a ring laser gyro based on the zero position signal of a circular grating encoder, which relates to the field of measurement and control technology and instruments. By establishing a measurement model of the ring laser gyro; using the measurement data of the ring laser gyro and the zero position signal of the circular grating encoder collected respectively when the turntable is stationary and when the turntable rotates uniformly forward and backward, the offset coefficient, scale factor and angular increment value of the measurement model of the ring laser gyro are calibrated. Based on the zero position signal of the circular grating encoder and the principle of circumferential closure, the scale factor in the measurement model of the ring laser gyro is calibrated, thereby calibrating the ring laser gyro. The present invention can be applied to the precise measurement and calibration of the dynamic motion parameters of the turntable.

The invention relates to the field of welding technology, and more specifically to a collimated annular galvanometer laser welding method; the method comprises the following steps: inserting a laser output point light source into a QBH interface of a welding converter, and introducing the point light source into the welding converter; the laser output point light source is converted into a parallel light beam through a collimation module in the welding converter and incident on an X / Y reflective lens of a digital galvanometer; the light is transmitted to a focusing field lens through reflection of the X / Y lens, so as to converge into a point ring light spot on the surface of a material to be welded; the X / Y lens is driven to move, and the focused point ring light spot moves accordingly, so as to complete the welding of the material; the invention has the beneficial effects of: by converting an ordinary point light spot into a point ring laser, welding spatter can be effectively reduced, the welding yield rate can be improved, and a good weld appearance can be obtained, and the cost is relatively low, and the invention can be widely used in the precision welding of lithium battery top covers, shells, battery cells, modules and other types of metal materials.

The present invention provides a method and system for calibrating a circular grating encoder based on a ring laser gyroscope. The method specifically includes the following steps: S1: Obtain the angular increment measurement value RNi of the ring laser gyroscope and the angular displacement measurement value OMi of the circular grating encoder synchronously measured under the trigger of a synchronization signal, where i = 0, 1, …, N; S2: Taking the angular displacement measurement value OMi of the circular grating encoder as the zero point, calculate the angular displacement value RMj of the ring laser gyroscope, where j = 1, …, n; S3: Calculate the error based on the angular displacement measurement value OMi of the circular grating encoder and the angular displacement value RMj of the ring laser gyroscope, and establish a measurement model of the circular grating encoder according to the error calculation result.

The invention discloses a machining device and method based on point ring laser, relates to the technical field of additive manufacturing, and can improve the additive manufacturing forming efficiency and the mechanical property of a machined component. According to the scheme, an ultrafast laser source is used for generating ultrafast laser, an optical fiber laser source is used for generating optical fiber laser, a spatial light modulator is arranged on an emergent light path of the optical fiber laser and used for modulating light spots of the optical fiber laser into points and / or rings, and modulated optical fiber laser is obtained; the beam combining assembly is used for controlling the ultrafast laser and the modulated fiber laser to generate a composite beam, and the scanning assembly is used for controlling the composite beam to scan raw materials according to a scanning path to generate a molten pool for additive manufacturing so as to perform additive manufacturing based on the molten pool.

The application discloses a Fourier domain mode locked laser based on a laser dynamic establishment process and a control method, and comprises a ring laser cavity which is composed of an optical amplifier, a first isolator, a second isolator, an adjustable filter, a delay optical fiber, a coupler and a polarization controller or an optical amplifier, a first isolator, a second isolator, an adjustable filter, a delay optical fiber, a coupler, an intensity modulator and a polarization controller. When the dispersion amount in the ring laser cavity exceeds the bandwidth range of the adjustable filter, the optical amplifier or the intensity modulator is controlled to restart, so that the laser signal is restarted instead of the signal in the continuous gain cavity, the residual dispersion in the cavity is resisted, high coherent swept laser output is realized, any dispersion compensation technology is not needed, the scheme is simple, the requirements of the devices used for the laser are low, environment control technology is not needed, the scheme has strong robustness, the cost is reduced, and the Fourier domain mode locked laser can be applied to any waveband.

The application discloses an optical glass lens testing equipment, and belongs to the technical field of optical detection. The optical glass lens testing equipment comprises a testing seat, a testing disc is arranged on the testing seat, an opening is formed in one end of the testing disc, an optical glass lens feeding disc is arranged at the opening, an inner disc body is arranged on the testing disc, the inner disc body is connected with a testing turntable through a rotating piece, and the testing turntable is connected with a suction self-rotation piece for driving the optical glass lens to rotate through a plurality of connecting support pieces. The optical glass lens is driven to revolve around a circle by the testing turntable, and the self-rotation is driven by a self-rotation gear ring, so that the detection of the optical glass lens is simultaneously completed in the moving process. The geometric center of the lens is vertically irradiated by a light emitter, and whether the light signal is received by a ring laser receiver is used to directly judge the offset between the geometric center and the optical center, so that the detection of the optical glass lens is achieved, and the detection precision is high, and the detection efficiency is significantly improved.

The invention relates to traction-type trenchless pipeline repair intelligent equipment which comprises a conical guide head and a circular repair part which are detachably connected through a first connecting part and a second connecting part. The conical surface of the guide head is provided with an annular laser emitter to detect the internal environment and damage position of the pipeline, the large end is provided with a servo motor, a transmission shaft is connected with a spiral push rod, and an inclined block at the end of the push rod is inserted into a guide hole of a sealing stop block of the repair part. The outer surface of the repairing part is provided with two groups of sealing stoppers, the side nozzle is connected with a repairing liquid high-pressure pump, the stoppers and the outer surface of the repairing part form a groove, a wound expansion ring is arranged in the groove, the volume of two ends of the expansion ring is adjusted through threaded connecting rods, and the inner wall is in contact with the inclined block. The equipment ensures that the coiled material is attached to the inner wall of the pipeline through primary repair of the repair liquid, secondary repair of the expansion ring coiled material and fine adjustment of the inclined block.

The utility model discloses a metal C-shaped ring laser cutting machine, which belongs to the technical field of laser cutting machines and is characterized by comprising a bottom table, the top of the bottom table is in bolted connection with a machine table, and the bottom table, the machine table, a hollow bearing plate, a fixed prevention assembly, a displacement rack, a laser cutting machine body, an absorption assembly and a purification assembly are arranged. A metal material for cutting the metal C-shaped ring is placed on the top of the hollow bearing plate, then the positioning and preventing assemblies located on the two sides of the interior of the machine table are started to position and abut against the two sides of the metal material, and then the laser cutting machine body located on the front side of the displacement rack is started to cut the metal material. During cutting, chipping particles and poisonous gas can be generated, the chipping particles can fall on the top of a hollow bearing plate, a slag suction fan in starting is matched with a suction hopper to suck the chipping particles on the top of the hollow bearing plate, and then the chipping particles are discharged into a collecting bag through a discharging pipe to be collected.