545results about How to "Prevent deviation" patented technology

The invention provides a digital quantum simulation method, which comprises the following steps of: performing symmetry analysis and subspace decomposition on a target Hamiltonian to obtain an effective Hamiltonian and a symmetry constraint condition; constructing a target unitary operator according to the effective Hamiltonian, and initializing a quantum circuit population of the target unitary operator; calculating entanglement characteristics of each quantum line in the quantum line population, performing structure variation on the quantum line population based on the entanglement characteristics, and performing line fragment crossing in combination with a symmetry constraint condition to obtain a candidate line set; performing line parameter optimization on the candidate line set based on the fidelity gradient to obtain an optimized line set, and extracting gate distribution structure features of the optimized line set; and non-uniform sampling is carried out on the optimized line set based on gate distribution structure characteristics to obtain a sampling line subset, an optimal quantum line is screened out from the sampling line subset based on the deviation between an experimental observation value and a theoretical expected value, and quantum simulation is carried out based on the optimal quantum line.

This invention provides a phased array testing device and method for fillet welds in pipe fittings, belonging to the field of non-destructive testing technology for pressure-bearing components. It can at least partially solve the problems in existing technologies such as difficulties in pre-treatment of fillet welds in confined spaces, inconsistencies in the positions of the pre-treatment zone and the testing zone, and unstable coupling in composite curvature regions. The invention includes: a shared motion platform with an installation interface at its front end, a guide component on one side, and a support component on the other side; a pre-treatment head and a testing head are respectively connected to the shared motion platform through the same installation interface. The pre-treatment head includes a grinding assembly and a limiting structure, and the testing head includes a phased array sensing unit and a coupling structure. By sharing the same installation interface and guiding reference, this invention achieves positional consistency between the pre-treatment zone and the testing zone, improving the feasibility and repeatability of in-service testing in confined spaces.

The utility model relates to the technical field of edge banding machine, disclose a kind of edge banding machine for plastic bag processing, including processing platform, the top middle fixed connection of processing platform has bearing frame, the top both ends of bearing frame are fixedly connected with fixed plate, one side of the fixed plate is penetrated and rotationally connected with driving roller, one end of driving roller is fixedly connected with worm wheel, one side of the fixed plate is penetrated and rotationally connected with transmission rod, one end of transmission rod is fixedly connected with worm, and worm and worm wheel are engaged connection, the other end of transmission rod is penetrated and slidingly connected with rocker, the top of bearing frame is penetrated and slidingly connected with evenly distributed slider. In the utility model, the linkage between driving roller, worm wheel, transmission rod, worm, slider, connecting block, slide bar, connecting rod, slide plate, first gear, second gear and transport roller can meet the demand of plastic bag edge banding width fine control.

The utility model relates to the technical field of die frame switching, in particular to efficient switching equipment for a double-guide-rail linkage type die quick-change die frame. The device comprises a limiting assembly, the limiting assembly comprises side plates, sliding blocks are arranged on the sides, close to each other, of the two side plates in a sliding mode, first guide rails are fixedly arranged on the sides, away from the side plates, of the sliding blocks, and pressing assemblies are arranged on the sides, away from the sliding blocks, of the side plates. According to the device, the mold frame penetrates through the two first guide rails, then a user presses the mold frame downwards till the mold frame is attached to the surface of the supporting block, then the user tightens the fixing screws to fix the two side plates, and when the mold frame is switched, the positions of the two first guide rails can be adjusted according to the size of the mold frame; and the situation that the installation position of the mold frame deviates due to the fact that the two first guide rails cannot be in accurate butt joint with the mold frame is prevented, and the position accuracy of the device for installing the mold frame is improved.

This application discloses a user behavior attribution method and related products. The method constructs a behavior sequence for each user based on multimodal behavior data of multiple users within a preset time window. Based on each user's behavior sequence, corresponding natural language semantic tags are determined, and these tags are converted into corresponding semantic vectors. The semantic vectors of multiple users in the current time window and in historical time windows are clustered to obtain clustering results for the current and historical time windows. The clustering results of the two time windows are compared to determine the semantic drift trajectory of each user group. Based on the semantic drift trajectories of multiple user groups, the contribution of each user group to the fluctuation of preset business indicators is quantified, and the quantification results are generated, along with an attribution report. Compared to the low accuracy of existing user behavior attribution technologies, this application has significant advantages.

The utility model provides a kind of fire-fighting spray vertical support pipe quick alignment structure, it is related to pipeline alignment technical field, including support, multiple fixed force are provided on support along length direction, and fixed force is used for for horizontal pipe to pass through and is fixed to horizontal pipe;Infrared emitter is installed in one side of support, for emitting bar light, bar light forms optical path along vertical direction and is irradiated to tee, when rotating tee makes the casting line of its outer wall and vertical optical path coincide, then the side mouth of tee is in vertical state;Fixed force and infrared emitter are all installed on adjusting assembly, adjusting assembly can adjust the height of fixed force and infrared emitter and is fixed after adjustment.The utility model can be in ground assembly stage to tee and be aligned and fixed in unified direction, to ensure vertical support pipe installation consistency, avoid leakage risk caused by secondary tightening, and effectively improve overall installation efficiency.

The utility model discloses a cutting device for foam processing, include: cutting table, the sliding installation of cutting table has the removal crossbeam, be provided with the cutting mechanism for cutting foam on the removal crossbeam, adjusting mechanism, install on the removal crossbeam, be used for adjusting the cutting mechanism position, pressing mechanism, install in the adjusting slide seat lower extreme of adjusting mechanism, be used for positioning to the foam cutting position, the pressing mechanism sets up a pair, and is distributed in the front and back two sides of cutting mechanism, the pressing mechanism includes the pressing telescopic link of installing in the adjusting slide seat lower extreme, the fixed pressing plate of telescopic end of pressing telescopic link, still have the pressing spring of pressing telescopic link on, the both ends of pressing spring respectively with pressing plate, adjusting slide seat corresponding side abut, the utility model discloses reasonable in structure can effectively prevent the foam deviation, improve the cutting accuracy, to better satisfy the use demand.

The application discloses a conductor dancing risk early warning method and system based on multi-dimensional feature data, relates to the technical field of conductor risk early warning, and comprises the following steps: determining a multi-modal dynamic model of a power transmission line by generating each node position based on collected conductor line parameters, decomposing each span conductor through the multi-modal dynamic model, setting a single three-node isoparametric cable unit for each section, and forming an equivalent load vector of the cable unit node according to the force of the cable unit node and the vertical gravity load. The method accurately models the gravity loading density of the unit combined with the influence of the complex external environment by comprehensively defining the line density and the ice correction density, thereby improving the calculation accuracy of the equivalent load vector of the conductor node under the combined loading of the wind load and the gravity.

The present application belongs to the technical field of parameterized modeling, and discloses a tunnel operation area dynamic parameterized modeling method; comprising: collecting measured data of a tunnel operation area; based on the collected measured data, establishing an initial model of the tunnel operation area; dividing the initial model of the tunnel operation area into a plurality of model regions, taking the model regions as nodes to construct an operation area undirected graph; assigning colors to the nodes in the operation area undirected graph; for each model region, determining a corresponding parameter group according to the assigned color, and updating to obtain an overall parameterized model based on the initial model of the tunnel operation area and the corresponding parameter groups of the model regions; namely, the dynamic parameterized modeling result of the entire tunnel operation area, which provides a scientific decision basis for design optimization, construction scheme formulation, risk assessment and operation management of tunnel projects.

The invention belongs to the technical field of metal wire feeding and printing, and relates to a quick-release wire feeding structure suitable for small-diameter metal wires. The wire feeding structure comprises a main body structure frame assembly serving as an installation reference and a force bearing main body of the whole mechanism; the quick-release wire feeding seat assembly is arranged in the main body structure frame assembly, and a through wire feeding channel is formed in the quick-release wire feeding seat assembly; the wire feeding shaft driving assembly is installed in the shaft hole of the main body structure frame assembly and used for driving the metal wire to move along the wire feeding channel; the wire feeding head assembly is installed at the outlet end of the main body structure frame assembly and used for guiding the metal wires; and the quick-release wire feeding seat assembly can be integrally taken out of and loaded into the main body structure frame assembly. The problems that operation and maintenance convenience is poor, and wire feeding stability and reliability are insufficient are solved.

The application discloses an electric-thermal comprehensive energy system collaborative frequency modulation method and system, the method comprising: obtaining a frequency deviation parameter in an electric power subsystem and a thermal energy storage state parameter in a thermal power subsystem as a real-time frequency modulation parameter; calculating a frequency deviation change rate and combining the real-time frequency modulation parameter to evaluate a thermal energy storage capacity margin value, generating a composite frequency modulation demand index; generating a multi-time scale frequency modulation task; based on the multi-time scale frequency modulation task, generating an electric-thermal weight distribution value by fusing the frequency deviation change rate and the thermal energy storage capacity margin value; generating an electric-thermal collaborative frequency modulation instruction according to the electric-thermal weight distribution value; and executing the electric-thermal collaborative frequency modulation instruction to control frequency modulation devices in the electric power subsystem and the thermal power subsystem. The application adopts a multi-time scale task decomposition and dynamic weight distribution strategy based on a composite frequency modulation demand index, can realize deep collaboration and optimized control of electric-thermal resources, and improves the frequency modulation performance and operation economy of the comprehensive energy system.

The utility model discloses a kind of piercing equipment of seamless steel pipe processing, it is related to steel pipe processing technical field.The utility model includes drilling pedestal and controller, controller is installed in the surface of drilling pedestal by bolt, through hole is set in drilling pedestal front surface, two opposite surfaces inside through hole are all set with installation groove, two installation grooves inside one surface are all penetrated with two guide grooves, two first electric push rods are welded on the both sides of four guide grooves, two first electric push rods one end commonly welded with mounting plate, mounting plate one surface is welded with rotating sleeve, rotating sleeve inside rotation is installed with rotating block, rotating block one end is welded with mounting frame, second connecting shaft is rotationally installed in mounting frame inside, and friction guide wheel is installed on the peripheral surface of second connecting shaft.The utility model is through rotating rod and friction guide wheel structure, position of rotating friction guide wheel is conveniently rotated when drilling in steel pipe, so that the friction surface of friction guide wheel and steel pipe side surface cross contact, and it is friction fixed.

The technical scheme belongs to the field of cutting and slitting machines, and particularly relates to a cutting device of a cutting and winding machine, which comprises a rack, the rack is provided with a cutting mechanism, the cutting mechanism comprises a first knife roll and a second knife roll which are rotatably arranged relative to the rack, the two knife rolls are tangent and matched, and a paper material passes between the first knife roll and the second knife roll; the strip cutting driving part is used for driving the first knife roll to rotate so as to be matched with the second knife roll to cut the paper material into a plurality of material strips; the pressing adjusting assembly comprises an adjusting rod in threaded fit with the first knife roll, the adjusting rod rotates to drive the first knife roll to move relative to the second knife roll, the slitting driving part drives the first knife roll to rotate, and the paper material is continuously cut into material strips when passing through a channel formed by tangency of the first knife roll and the second knife roll; an adjusting rod of the pressing adjusting assembly accurately controls axial displacement of a first knife roll through thread transmission, stepless adjustment of a paper material channel is achieved, the cutting precision is kept, and the adaptability of paper materials of different thicknesses and the equipment maintenance efficiency are improved.

The utility model discloses a wire harness terminal stable crimping mechanism, which relates to the technical field of wire harness binding and comprises a fixing mechanism, one side of the fixing mechanism is connected with a conveying mechanism, one side of the conveying mechanism is provided with a feeding mechanism, the upper end of the conveying mechanism is provided with a clamping mechanism in a sliding manner, and the clamping mechanism is provided with a clamping mechanism. The wire harness crimping device solves the problems that the existing wire harness crimping needs to be realized while being kept stable, the operation difficulty is high, and the working efficiency is low, realizes the crimping displacement between the guide rail piece and the belt through the arrangement of the feeding structure and the conveying mechanism, and is convenient to operate through the movable crimping arrangement of the rotating plate when in use. The wire harness needs to be aligned with the intersection point of the wire harness positioning bevel opening, then the rotating plate and the belt are driven to move synchronously, when the rotating plate moves to one end of the wire harness positioning bevel opening, the rotating plate is limited by the clamping guide groove, cannot rotate and needs to be kept in a vertical state to conduct downward extrusion and compression joint, and then terminal compression joint of the wire harness can be automatically achieved.

The utility model discloses a moso bamboo pretreatment device for bamboo chopstick production, and relates to the technical field of bamboo chopstick production. The device comprises a machining frame, a sealing plate and a transmission assembly, the sealing plate is welded to one end of the machining frame, the transmission assembly is installed at the other end of the upper surface of the machining frame, an equidistant adjusting hydraulic rod is welded to one surface of the sealing plate, an equidistant moving plate is welded to one end of the equidistant adjusting hydraulic rod, and an equidistant abutting plate is welded to the upper surface of the equidistant moving plate; the transmission assembly comprises first electric push rods and a transmission motor, the two first electric push rods are welded to the upper surface of the machining frame, bearing plates are welded to the upper surfaces of the two first electric push rods, and the transmission motor is fixedly installed on the bearing plates. Through the structure of the equidistant moving plate, the equidistant abutting plate and the transmission assembly, the moso bamboos can be conveniently moved at equal intervals when the moso bamboos are cut, it is guaranteed that the moso bamboos are driven by the transmission assembly to move at the same distance after each time of cutting, the moso bamboos are positioned, the moso bamboos are made to be the same in cutting length, and bamboo chopsticks can be conveniently machined in the later period.

The present invention provides an elastic wave device capable of suppressing deviations from the conditions for establishing a piston mode. The elastic wave device (100) comprises: a piezoelectric layer (15); a pair of comb-shaped electrodes (21) disposed on the piezoelectric layer (15), each having a plurality of electrode fingers (22), the intersection region (30) of the plurality of electrode fingers (22) intersecting each other comprising an edge region (32) located at the edge of the long side direction of the plurality of electrode fingers (22) and a central region (31) located inside the edge region (32); a first insulating film (16) covering the pair of comb-shaped electrodes (21) disposed on the piezoelectric layer (15); a load film (40) covering the front ends (27) of the plurality of electrode fingers (22) on the first insulating film (16) disposed in the edge region (32) and not disposed in the central region (31); and a second insulating film (17) covering the load film (40) disposed on the first insulating film (16).

The application provides a media information effect attribution and budget intelligent allocation method and system, relates to the technical field of media information, and comprises the following steps: constructing a conversion path by analyzing a user touch sequence and calculating attribution contribution weights of each media channel, and then obtaining an attribution return on investment. Based on this, a budget allocation optimization model is constructed to maximize the overall return, and a target budget scheme is generated for execution. After execution, the conduction effect of budget adjustment is analyzed through a cause-effect tracking map, and feedback is fed back to optimize the attribution weight calculation, so that dynamic closed-loop optimization and accurate effect evaluation of budget allocation are realized.

The utility model relates to the technical field of wood processing, in particular to a planing and drilling integrated device for wood, which comprises a base and a conveyor belt arranged on the upper end face of the base, a planing component is arranged at the upper end of the base, and the planing component comprises four groups of mutually symmetrical adjusting seats arranged at the upper end of the base. When the wood is conveyed to the lower end of the square frame, a conveying belt is closed, a first motor is started, a first ball screw drives a first ball screw sleeve to slide downwards till the wood is located at the middle end of the square frame, a first air cylinder is started to extend, four sets of planing cutters are all attached to the outer wall of the wood, and a second motor is started to drive a second ball screw sleeve to slide; the first air cylinder drives the planing cutters to slide along the surface of wood to grind and cut the wood, the four sets of planing cutters can cut multiple edges of the wood at the same time, the wood processing efficiency is improved, and the wood cutting time is saved.

The application discloses a cloth rectification feeding mechanism of a sewing machine and belongs to the technical field of sewing equipment. The sewing machine comprises a sewing machine table, a cloth adjusting assembly, a cloth rectification assembly and an elastic band feeding mechanism. The cloth adjusting assembly, the rectification feeding mechanism and the elastic band feeding mechanism are all arranged on the sewing machine table. The cloth rectification assembly is located below the cloth adjusting assembly and the elastic band feeding mechanism and cooperates with the elastic band feeding mechanism to make the cloth and the elastic band enter a sewing feeding port synchronously. The cloth adjusting assembly realizes height and front and back position adjustment. The cloth rectification assembly realizes two-stage left and right rectification and double-roller feeding to prevent the cloth from deviating. The elastic band feeding mechanism realizes stable elastic band feeding and limiting guidance. The application can realize automatic synchronous feeding of the cloth and the elastic band, two-stage automatic rectification, flexible position adjustment, high sewing precision, stable operation, strong applicability, and effectively solves the problems of easy deviation, asynchronization and inconvenient adjustment of traditional sewing feeding.

This utility model relates to an auxiliary device for conveying bearing rings in bearing production. The adjusting rod can slide left and right along the support member, and the guide plate can slide back and forth along the first sliding member. Combined with the positioning function of the elastic positioning component, the distance and position between the two guide plates can be flexibly adjusted to adapt to bearing rings of different diameters and thicknesses. The auxiliary device does not need to be frequently replaced, which reduces equipment costs and improves production efficiency. The adjusting rod and the first sliding member are hinged, allowing the guide plate to rotate around the hinge point to adjust the angle, thereby forming a figure-eight structure between the two guide plates. This figure-eight structure can automatically gather the bearing rings towards the centerline or a specified direction during the conveying process, preventing the bearing rings from deviating or scattering, ensuring stable conveying posture, and providing a precise positioning basis for subsequent processing, inspection and other processes.

This utility model provides a pneumatic lifting device for electronic trays, including a tray positioning assembly, a drive assembly, and a handling robot. The tray positioning assembly inserts a central positioning cone into the center hole of the tray, and, in conjunction with a pressure plate, clamps the tray to achieve precise vertical positioning. The drive assembly uses a downward-pressing cylinder to drive the limit plate to rise and fall, with linear bearings ensuring stability. The handling robot uses a rotary cylinder, a gripper cylinder, and a synchronous belt mechanism to achieve 45-degree rotation and extend / retract the fork, completing the tray gripping and handling. This device has a compact structure, high positioning accuracy, and strong adaptability, significantly improving the efficiency and stability of automated production, and is suitable for various electronic trays.

This utility model provides a coaxial cable welding clamp, relating to the field of electrical welding technology. It includes a support base, with a vertical bearing fixedly connected to the top of the support base. A rotating shaft is rotatably connected to the inner wall of the vertical bearing, and both ends of the rotating shaft are provided with external threads. Sliding seats are fixedly connected to both ends of the support base. In this utility model, two cables to be joined are passed through the inside of a joining sleeve. By tightening the screw with a wrench, the inner clamping plate is moved towards the axis, thereby clamping the cable ends. Rotating the handle causes the rotating shaft to actuate via the external threads, moving the two sliding blocks towards each other, bringing the two cable ends closer together and joining them. The welding process of the two cables can then be completed using welding equipment, achieving the effect of quickly positioning two cables on the same axis.

This utility model relates to the field of coal mine electromechanical transportation technology, specifically disclosing a self-adjusting anti-deviation conveyor device for coal mine electromechanical transportation. It includes: a conveyor belt; an anti-deviation mechanism mounted on the conveyor belt to prevent deviation during transport; and a feeding mechanism mounted on the conveyor belt to crush materials during transport. Through the anti-deviation mechanism, the device can concentrate the transported coal using clamps and baffles, preventing deviation during transport. Additionally, operators can adjust the transport space using a telescopic rod within the adjusting plate, improving the stability of the transport process. The feeding mechanism allows the device to feed materials through a feeding cylinder, which enters the crushing chamber where the coal is crushed, facilitating transport.

The application relates to the technical field of aluminum alloy structure design, and discloses an aluminum alloy net shell structure design method and system based on a genetic algorithm. The method receives design requirement parameter input by a user, including span, height and load conditions of the net shell structure; divides the net shell structure into multiple design units corresponding to nodes or rod pieces; obtains historical performance data of aluminum alloy material, such as strength, rigidity and durability, from a database; determines the importance level and constraint level of each design unit based on the above data; generates an initial population containing multiple design schemes by using a genetic algorithm; iteratively executes selection, crossover and mutation operations to optimize the design individual; collects structure response data such as stress, strain and displacement in real time in the iteration; confirms whether a preset constraint condition is violated based on the data, and adjusts the genetic algorithm parameter if the constraint condition is violated; and outputs an optimal design result and generates a structure analysis image for the user to view.

The application discloses a panel laminating device for electronic display screen production and relates to the technical field of display screen lamination.The panel laminating device comprises a base, a vacuum laminating machine is fixedly installed at the top of the base, a pneumatic cylinder driving device is arranged in the vacuum laminating machine, a laminating pressing plate is fixedly installed at the output end of the pneumatic cylinder driving device, a linear driving module is fixedly installed at the top of the base, and a carrying sliding table is fixedly installed at the moving end of the linear driving module.The panel laminating device can complete the distance calibration and positioning of four groups of display screen panels at one time through the right-angle positioning function of the cross-shaped baffle, can adapt to the synchronous lamination operation demand of multiple groups of display screen panels, and can shorten the time consumption of single-batch positioning.

This application discloses a stylus charging dock for simultaneously charging multiple styluses, comprising a substrate body, multiple charging ports, a circuit board, and a power input port. The charging ports are spaced apart on a first surface of the substrate body, and each charging port has at least one charging terminal. The circuit board is disposed on a second surface of the substrate body and is electrically connected to the charging ports. The power input port is disposed on the circuit board and is electrically connected to the charging ports via the circuit board.

The invention belongs to the technical field of wind power generation, and particularly relates to a wind turbine generator state evaluation method and a related device, and the method comprises the steps: obtaining an electromagnetic transient response signal of a to-be-evaluated wind turbine generator; performing empirical mode decomposition on the electromagnetic transient response signal of the wind turbine generator to be evaluated to obtain a plurality of image forming model components; performing feature extraction on each image forming model component, and performing normalization processing to obtain a feature vector; classifying the feature vectors by using a pre-constructed state classification model to obtain a state evaluation result of the to-be-evaluated wind turbine generator; wherein the pre-constructed state classification model is a pre-trained support vector machine; according to the method, the fault features in the electromagnetic transient response signals of the wind turbine generator can be effectively extracted, and the accuracy and robustness of state evaluation are improved; meanwhile, non-linear and non-stationary signals can be decomposed in a self-adaptive mode, the time domain features of the signals are reserved, and the information amount and accuracy of state evaluation are improved.

The application discloses a kind of video conference immersive interaction methods and systems based on multidimensional perception.It belongs to computer vision and virtual reality technical field, including: real-time audio and video stream and user behavior signal are extracted, key business elements and action patterns are identified, and dynamic environment adjustment parameters are generated;According to the parameters, an initial virtual space model is constructed and the business elements are mapped to the corresponding three-dimensional coordinate position, when the matching degree of business elements and perception data is lower than the preset threshold, the virtual space representation is corrected by recursive grid optimization algorithm;From the corrected space representation, the interactive hot spot area is extracted, and the attention mechanism is used to weight and integrate the line-of-sight vector and gesture trajectory, to generate real-time interaction mapping;Finally, the mapping drives the rendering engine to synchronously update the visual and auditory presentation of the virtual space, and pushes the immersive conference picture to all participating terminals.The application significantly improves the interaction accuracy and collaborative efficiency of virtual conference space.

The invention relates to the technical field of machining and positioning tool equipment, in particular to a grinding and fixing chuck for a direct-drive electric spindle, which comprises a three-jaw chuck, a supporting ring is sleeved on the side surface of the three-jaw chuck, the three-jaw chuck is rotatably connected with the supporting ring through an annular slide rail, and an electric guide rail is arranged below the middle of the supporting ring. An annular auxiliary chuck is arranged in front of the three-jaw chuck, and the bottom of the auxiliary chuck is in sliding connection with the electric guide rail through a sliding block. According to the grinding fixing chuck for the direct-drive electric spindle, through double fixing and dynamic supporting of the auxiliary chuck and the three-jaw chuck, vibration and center line position deviation of the electric spindle in the grinding process are effectively restrained, and the grinding precision and quality are improved; due to the linkage design of the scrap removing plate and the auxiliary supporting roller, grinding scraps and dust on the surface of the main shaft can be automatically removed in the supporting process, the grinding safety is improved, the grinding quality is further improved, and the workload is reduced for follow-up motorized main shaft cleaning work.

The present application relates to magnesium alloy rod processing equipment technical field, specifically for magnesium alloy rod peeling processing device, including horizontal lathe, the horizontal lathe is provided with auxiliary disc and thimble, further including at least two interval arrangement in the same straight line support assembly, each support assembly is arranged between the auxiliary disc and thimble, each support assembly includes support frame, arc-shaped support plate and at least three steel balls, the lower end of the support frame is fixedly connected to the horizontal lathe, the arc-shaped support plate is arc-shaped and is in the upper opening structure, and the upper end of the corresponding support frame is connected to the inner side of the corresponding arc-shaped support plate, and each steel ball is uniformly distributed, and is rotatably connected to the corresponding arc-shaped support plate. The present application can improve the current magnesium alloy rod clamping machining mode, the problem that the magnesium alloy rod may appear axial deviation, leading to the problem of increased peeling size error.