556 results about "Workmanship" patented technology

The invention discloses a Solidworks model-based machining program generation method and system, and belongs to the technical field of computer-aided manufacturing, and the method comprises the steps: S1, analyzing the modeling features of each part in a Solidworks model, carrying out the matching analysis of the modeling feature sketch contour and sketch plane normal vector with a feature library, obtaining a machining feature category, and carrying out the recognition of the machining feature category; performing feature grouping according to the processing feature category and the processing direction; s2, identifying and extracting the part size and tolerance marked in the sketch; s3, analyzing a part machining process based on the machining feature category, the part size and the tolerance; s4, the blank type, machining allowance distribution, machining steps and a clamping mode are determined; s5, the three-dimensional space coordinates of the machining contour are converted into machine tool machining coordinates, and machining information is sequenced; s6, the machining path of the part machining technology is calculated; and S7, according to the machining path, combining with an instruction supported by a specific machine tool, performing post-processing to generate a G code.

The invention provides a workpiece machining path compensation method and system based on multi-vision cooperative localization, and relates to the technical field of workpiece machining.The method comprises the steps that a compensation reference coordinate system of a workpiece machining path is established; determining a theoretical machining path of the workpiece according to the CAD model and the process planning of the workpiece, and mapping the theoretical machining path to the compensation reference coordinate system; performing global coarse compensation on the theoretical processing path to generate a global compensation amount and a global compensation path; performing local compensation on the global compensation path according to the local point cloud to obtain a local compensation amount and a local compensation path; according to the cutting parameters of the workpiece, the local compensation path is subjected to flexibility compensation, and the flexibility compensation amount is obtained; under the compensation reference coordinate system, compensation quantity fusion is carried out on the global compensation quantity, the local compensation quantity and the flexibility compensation quantity, and a final compensation path is generated; and executing the final compensation path. According to the method, the execution precision and stability of the machining path and the adaptability to complex machining working conditions are remarkably improved.

The invention discloses a machining method of an eccentric mandrel, and belongs to the technical field of machining. The machining method comprises the machining steps that firstly, a certain process length is reserved for the two ends of a blanked blank; 2, roughly turning reference outer circles at two ends of the blank, and reserving process steps on the outer circle of the middle section of the blank; step 3, milling reference flat parts on the reference excircles at the two ends of the workpiece, and milling symmetrical key grooves on process steps; fourthly, an eccentric hole is drilled in the end face of the workpiece, and a small outer circle corresponding to the eccentric reference is milled; step 5, carrying out top turning on reference small outer circles at the two ends; sixthly, the process step of the workpiece is sleeved with an eccentric sleeve clamp, the eccentric sleeve clamp is supported by a center frame, an inner hole is machined in the eccentric hole, and the inner hole is coaxial with the small outer circles at the two ends and eccentric with the large outer circle; and seventhly, the reserved process length and process steps of the workpiece are removed through finish machining. When a long-shaft eccentric inner hole is machined, clamping and dismounting can be conveniently and rapidly achieved, and damage to a machine tool spindle can be reduced to a certain degree.

The invention discloses a turning machine tool and a turning method, and belongs to the technical field of machining. The workpiece main shaft is connected to the Z-axis guide rail in a sliding mode, and the Z-axis guide rail is fixed to the lathe bed; a rotary carriage and an X-axis guide rail; the X-axis machining tool is connected to the X-axis guide rail in a sliding mode; the rotation center line of the workpiece spindle and the rotation center line of the rotary table are perpendicular and coplanar, the X axis deviates from the rotation center line of the rotary table, and the included angle between the Z axis and the X axis is adjusted by rotating the rotation carriage along the B axis. The turning method comprises the steps that the X-axis and the Z-axis are turned at a fixed angle, the B-axis is located at a fixed position, or the X-axis, the Z-axis and the B-axis are turned in a linkage mode. Multi-axis linkage can be carried out, the spatial position of a tool nose tool is accurately calibrated, high precision and high quality of special-shaped surface machining are ensured, the special-shaped surface machining device is suitable for multi-configuration feature machining of special-shaped surfaces, and high-precision cutting under various process requirements of curved surface turning, milling and the like is achieved.

The utility model relates to the technical field of tool grinding machines, in particular to a tool grinding machine facilitating online replacement of a grinding wheel, which comprises a machine body, a working turntable, a clamping spindle, a mounting seat, a supporting seat and a spare grinding wheel component. A clamping main shaft for driving a tool to rotate is fixedly mounted on the upper side of the working turntable; and a second sliding table capable of moving the mounting seat up and down and left and right is mounted on the upper side of the rear part of the lathe bed. The grinding wheel replacing device is reasonable and compact in structure, grinding wheels can be automatically replaced according to the grinding process, the grinding requirements of various tools can be met, grinding wheels or grinding wheel combinations of various specifications can be prepared according to the grinding process before the tools are ground, the time for manually replacing the grinding wheels is shortened, and the grinding efficiency is improved. Safety risks existing in the process of manually replacing the grinding wheel are reduced, meanwhile, accurate matching can be achieved in the process of replacing the grinding wheel of the tool grinding machine, and therefore errors of a grinding tool are reduced, and grinding quality is improved.

The present application discloses a method and device, medium, and terminal for determining process parameters of a thin strip continuous casting machine, relating to the field of casting technology. The main purpose is to solve the problems of increased risk of operation errors caused by manual adjustment of the casting machine process parameters in the prior art, as well as the situation of untimely adjustment, which may lead to a decline in product quality. It includes: pre-constructing a full-coupling model of the process parameters of the thin strip continuous casting machine, determining the process parameters required for controlling the casting machine according to the full-coupling model of the process parameters of the thin strip continuous casting machine, and determining the initial value of the process parameters of the casting machine for this casting by optimizing from the process parameters recorded in the historical casting production data. Then, according to the periodic production data of the stable state period and the full-coupling model of the process parameters of the thin strip continuous casting machine, calculate the correction value of the solidification parameter, the correction value of the rolling parameter, the set casting and rolling force, and the set drawing speed, and adjust the initial value of the process parameters of the casting machine based on the above parameters.

The invention relates to the technical field of factory visualization, in particular to an intelligent factory production visualization method and system based on digital twinning, and aims to automatically construct a three-dimensional space model of factory production line layout and equipment structure by fusing laser point cloud and image data and replace manual labeling to realize digital reconstruction of a physical workshop. A deep learning model is utilized to analyze product paths and state changes, exposed nodes are identified, associated equipment is reasoned, intelligent division of the equipment is completed, and manual modeling work is reduced. The behavior rhythm characteristics of the operation parameters are extracted and compared with the historical modes of the equipment sub-models, the rhythm similarity matrix is automatically constructed, the parameter binding relation is determined, and tedious manual configuration is avoided. The scheme has good flexibility and self-adaptive ability, the model can be quickly updated after process change or equipment replacement, it is guaranteed that the digital twin system is synchronous with the actual factory state, and efficient deployment and visual updating are achieved.

The embodiment of the invention discloses a numerical control machine tool adjusting method and device, electronic equipment and a computer readable medium. A specific embodiment of the method comprises the following steps: collecting initial machine tool data of a numerical control machine tool through an edge gateway; workpieces produced by the numerical control machine tool are detected, and workpiece detection data are obtained; binding the initial machine tool data with the workpiece detection data to obtain workpiece production quality data; based on the standard workpiece data information, performing production quality evaluation on the workpiece production quality data to obtain a dimensional deviation ratio and a cutting stability index; in response to the situation that the size deviation ratio and / or the cutting stability index do not reach the preset standard value, correspondingly machined appliance parameter data are searched in a preset technology knowledge base; converting the appliance parameter data into a machine tool execution instruction; and writing into a control system of the numerical control machine tool to process the workpiece. According to the implementation mode, the numerical control machine tool can adjust the parameters in real time according to the quality of the workpiece, and the machining quality and the yield of the workpiece are improved.

The invention discloses a method for detecting tissue evolution in a heating process after quenching of tool steel based on saturation magnetization, resistivity and hardness, and relates to the technical field of metal material detection.The method comprises the steps that heating parameters are set for different types of tool steel, and an actual tempering process is simulated; then, the saturation magnetization intensity, the resistivity and the hardness are measured through professional equipment, and data are obtained through accurate measurement and scientific calculation; and then, sorting the data to establish a database, analyzing by using a multiple linear regression model, and judging an organization evolution stage according to a preset result range. According to the method, the structure evolution of the tool steel can be accurately and comprehensively monitored, the detection accuracy and scientificity are improved, powerful support is provided for quality control and process optimization in the tool steel production process, and the tool steel product performance and production efficiency are effectively improved.

In a grinding method for grinding a substantially planar workpiece surface of a workpiece, a grinding machine is used which has a grinding wheel with an abrasive side surface, wherein the grinding wheel can be rotated about a rotational axis by means of a rotational drive and can be fed by means of a feed drive in a feed direction oriented parallel to the rotational axis.To carry out a grinding operation, the workpiece is arranged in a working position, the grinding wheel is set in rotation about the axis of rotation, the abrasive side surface is brought into contact with the workpiece surface by feeding the grinding wheel; and the grinding wheel is fed from a starting position with workpiece contact to generate material removal according to a feed function. The feed of the grinding wheel takes place according to a workpiece-specific feed function depending on a material proportion curve, whereby the material proportion curve represents a distribution of workpiece material in a surface profile depending on a cutting depth measured parallel to the feed direction.

The invention discloses a gear machine tool expert system construction method based on a generative rule, and the method comprises the steps: firstly carrying out the multi-dimensional modeling of a gear and a machine tool through an object-oriented technology, enabling a gear model to distinguish the characteristics of an axis position, a tooth curve and the like through an interface, and enabling a machine tool model to distinguish the machining technology and the precision grade through an interface; secondly, establishing a generation type rule mapping system from geometric, precision, material and functional attributes of the gear to machine tool movement, precision, process and rigidity attributes; finally, an intelligent reasoning system including forward reasoning, reverse verification, conflict coordination and self-learning iteration is constructed, and automatic and accurate matching from gear design requirements to machine tool optimization configuration is achieved. According to the method, the problems of high subjectivity and low efficiency caused by dependence on expert experience in the prior art are solved, and knowledge-driven intelligent decision making is realized.

Provided in the embodiments are a machining monitoring method, a machining monitoring apparatus, a computing device and a computer-readable storage medium. By acquiring first information of a first machining process in real time, retrieving a model in a model library on the basis of the first information, and matching a physical model having second information identical to the first information, the matched physical model characterizes a second relationship between material removal characteristics and specific cutting energy, thereby eliminating the influence of tool types and workpiece materials, and reflecting the machining characteristics of a second machining process; by comparing a first relationship with the second relationship, the differences between the first machining process and the second machining process are obtained to provide monitoring suggestions; and since the first relationship and the second relationship are acquired on the basis of the material removal characteristics and the specific cutting energy, and a monitoring threshold value is generated without using a signal strongly correlated with process conditions to perform learning, the method is well-suited for various machining scenarios.

The application describes a machine tool adapted and arranged to carry out removal and addition of material on a work piece located in a work station, the machine having a first head arranged to remove material from the work piece and at least a second head arranged to process the work piece, each of the first and second heads being arranged to be moveable in at least two axes and preferably in 3, 4 or 5 axes and wherein the machine is arranged to control an environment of the work station. The work station is at least partially sealable. The machine has a clean side and a dirty side. Novel processing heads particularly adapted for use in the new machine tool are disclosed. These may also be retrofitted to CNC machines. The novel heads include heads adapted to carry out two processes simultaneously. Heads adapted to carry out heat and pressure treatment are also disclosed. Use of the processing heads to carry out analysis in manufacturing steps is disclosed as is the provision and use of heads that can carry out analysis as well as processing.

The external thread grinding machine comprises a machine body, a workpiece main shaft, a center frame and a grinding wheel main shaft, a Z-direction sliding plate and an X-direction sliding plate are arranged on the upper end face of the machine body, the workpiece main shaft is installed on the Z-direction sliding plate, and the center frame is installed on the Z-direction sliding plate and used for supporting the outer circle of a workpiece. The grinding wheel spindle is arranged on the X-direction sliding plate, the outer circle of one end of a workpiece can be clamped through the workpiece spindle, then the outer circle of the workpiece is supported by adjusting the center frame, grinding operation of external threads is completed, grinding of a center hole and jacking of a tailstock are not needed, the technological process is optimized, the machining cost is reduced, and the machining efficiency is improved. The invention belongs to the technical field of mechanical design.

Intelligent assistance system for worker guidance and quality control of manual activities at industrial manual workstations. In the manufacturing industry, many production processes are carried out at manual workstations. The high quality standards of modern production require employees to have precise knowledge of the process steps to be performed and maintain a consistently high level of concentration. The assistance system is intended to facilitate work at such manual workstations, improve the quality of work results, and thus increase productivity. The invention guides employees step by step through the production process using output devices and uses sensors to check for error-free execution at each step. If an error occurs, the operator is immediately warned and prompted to correct it.

The internal thread turning and grinding combined machining equipment comprises a machine tool body, a workpiece main shaft, an internal thread grinding wheel main shaft, an internal thread grinding wheel main shaft swing angle device and a turning tool device, an X-direction sliding plate and a Z-direction sliding plate are arranged on the machine tool body, and the turning tool device is arranged on the X-direction sliding plate. The turning tool device comprises a tool apron and a deep hole turning tool with one end fixedly connected with the tool apron, the internal thread grinding wheel spindle swing angle device and the turning tool device can be arranged on the X-direction sliding plate, and when an internal thread deep hole part with the large length-diameter ratio is dealt with, the deep hole turning tool and an internal thread grinding wheel spindle are used for achieving the technological process of firstly turning and then grinding; the clamping frequency is reduced, the machining precision is improved, the machining time is shortened, the machining cost is reduced, and the machining efficiency is improved.

The invention belongs to the technical field of carrier conversion equipment, and discloses a carrier conversion machine which comprises a transfer module, a workpiece turnover module and a workpiece taking module which cooperate with one another to achieve precise transfer and turnover operation of workpieces between different carriers and different stations. Automatic transfer of steel sheets and workpieces among multiple stations is achieved, turnover treatment can be achieved after workpiece suction is completed through the design of the workpiece turnover module, the turnover action and the carrying action are combined together through the design, the workpiece turnover module and the workpiece taking module which are arranged at the fixed positions are matched, and the work efficiency is improved. By means of the system, the overturned workpieces can be accurately handed over from the first carrier to the second carrier, the problem that the posture is unstable in the overturning process is effectively solved, the placement precision and the process consistency of the workpieces are greatly improved, dependence on manual operation is further reduced, and key equipment support is provided for achieving a few-person unmanned production line.

The invention discloses an automatic compensable grinding and polishing machining method for a hemispherical harmonic oscillator. The method comprises the steps that a diamond grinding wheel with the first granularity is used for conducting generating method machining on a workpiece according to the first feeding speed; replacing a diamond grinding wheel with a second granularity, performing tool setting to obtain an actual position of machining feeding, and performing generating method machining on the workpiece again according to a second feeding speed from the actual position; the polishing wheel is replaced, tool setting is carried out to obtain the actual position of machining feeding, generating method force control polishing is carried out on the workpiece from the actual position, workpiece in-place measurement is carried out after polishing, compensation polishing is carried out according to the in-place measurement result till the requirement is met, and the hemispherical harmonic oscillator is obtained. The problem of automatic tool changing in the generating method hemispherical harmonic oscillator machining process can be solved, the tolerance requirement for tool manufacturing is lowered, the process time is saved, the machining procedure is completed on the premise of one-time clamping, and the requirement for coaxiality among an inner ball, an outer ball and a supporting rod of a workpiece is met.

The invention provides a gantry numerical control milling machine machining method for self-adaptive intelligent tool path planning, and belongs to the technical field of numerical control milling machines, and the gantry numerical control milling machine machining method comprises the following steps: S1, obtaining three-dimensional model data of a workpiece, carrying out feature recognition and analysis on the three-dimensional model data, and determining to-be-machined features, including a plane, a curved surface, a hole and a groove, of the workpiece; s2, according to the to-be-machined features, in combination with a machining technology knowledge base, a proper tool type, tool size and initial cutting parameters are automatically matched; and S3, based on a self-adaptive algorithm, collecting state information of the gantry numerical control milling machine in the machining process in real time. According to the method, automatic feature recognition is realized through three-dimensional model analysis, manual intervention is reduced, and the processing preparation efficiency is improved; cutters and parameters are matched through a process knowledge base, the reasonability of an initial machining scheme can be ensured, and the trial and error cost is effectively reduced; and through real-time state monitoring and self-adaptive adjustment, the machining process is optimized, and the machining precision and the surface quality can be improved.

The invention provides a method for automatically compiling an assembly process procedure based on CATIA and EXCEL secondary development, and the method comprises the steps: building a standard part library, compiling a procedure template, determining process connection information, selecting drilling and connection working conditions, and finally compiling the procedure according to the determined drilling connection point information. According to the method, by specifying the part drawing number, automatically screening the drilling connection information related to the specified part in the mathematical model and automatically counting the number of the standard parts, the time for selecting, copying, pasting and sorting by technicians is saved, the problems of missing selection, wrong selection and wrong counting of the number of the standard parts are solved, the one-time passing rate of regulation compiling is increased, and the working efficiency is improved. Wait waste in the production process is avoided, and the assembly efficiency is improved.

The invention relates to the technical field of grinding and polishing, and particularly provides a self-adaptive polishing method and a self-adaptive polishing device.The self-adaptive polishing method comprises the steps that a removal function is determined according to grinding and polishing process parameters of a target workpiece; performing iterative calculation according to the removal function and the target removal amount of the target workpiece to obtain corresponding predicted residence time and predicted residual error; wherein the target removal amount is calculated according to the current surface shape of the target workpiece and the target surface shape; under the condition that the predicted residual error does not conform to a preset error range, new grinding and polishing process parameters are set, a new removal function is determined, and the predicted residence time and the predicted residual error corresponding to the new removal function are obtained through calculation; and grinding and polishing the target workpiece according to the predicted residence time. The grinding and polishing precision and the grinding and polishing efficiency are effectively improved, and it is guaranteed that the machining quality of the target workpiece is high.

The invention relates to an intelligent dry-type smoothing machine and a smoothing process thereof, and belongs to the technical field of smoothing machine equipment.The intelligent dry-type smoothing machine comprises a rack, a roller, a fixing clamp and a cleaning mechanism; the roller is rotatably connected to the rack, a material opening is formed in the roller, a material door is arranged at the material opening in an openable and closable mode, and the material opening inwards leads to a smoothing cavity formed in the roller; the fixing clamp is arranged in the smoothing cavity, is fixedly connected to the roller and is used for positioning a workpiece; the cleaning mechanism is used for collecting metal powder scraps in the smoothing cavity. According to the intelligent dry-type smoothing machine, the cleaning mechanism is integrated in the intelligent dry-type smoothing machine, the automatic cleaning function in the smoothing process is achieved, the cleaning efficiency and production efficiency of equipment are remarkably improved, meanwhile, manual intervention and equipment maintenance cost are reduced, the working environment is improved, the reliability of the equipment is improved, and the service life of the equipment is prolonged.

The present application relates to the technical field of numerical control processing, especially to the technical field of numerical control processing of aircraft joint parts and cylindrical parts. A kind of multi-surface numerical control processing technology of joint parts and cylindrical parts includes the following steps: step one, making part bottom plane positioning hole;Step two, fix the positioning clamping device on the machine tool rotary worktable;Step three, joint parts and cylindrical parts rough machining preparation;Step four, joint parts and cylindrical parts rough machining;Step five, machine tool rotation accuracy automatic detection and compensation;Step six, re-determine the processing datum of the part;Step seven, joint parts and cylindrical parts finishing;Step eight, finishing of the double-ear precision groove of the part;Step nine, finishing of the double-ear precision hole of the part;Step ten, fitter cuts off process boss and polishes it.The present application has the following advantages:1, ensures the part processing precision, processing efficiency and processing stability;2, simplifies the process scheme of part processing.

The application discloses a multifunctional metal product processing device, and relates to the technical field of metal product processing, which comprises a machine tool, a flexible clamping assembly is arranged in the machine tool, a multifunctional disc is arranged on the inner cavity side wall of the machine tool, a plurality of telescopic assemblies are arranged on the multifunctional disc, a stable clamping assembly is arranged at one end of the telescopic assembly, and an air pump in communication with the flexible clamping assembly and the stable clamping assembly is arranged at the top end of the machine tool; the flexible clamping assembly comprises a clamping sleeve and a clamping plug-in sleeve, and the clamping sleeve and the clamping plug-in sleeve are telescopically arranged on the side wall of the machine tool; the application solves the clamping problem of special-shaped workpieces through bidirectional flexible clamping, can quickly switch the clamping assembly, adapts to various processing technologies, integrates multiple processing procedures, realizes one-time clamping of workpieces and full-sequence completion, improves processing efficiency and precision, reduces the cost of type change, and adapts to diversified special-shaped metal product processing requirements.

The utility model discloses a workpiece rotating device, including floor, the upper end fixed mounting of floor has the interface board, the upper end fixed mounting of interface board has the foot bolt, the upper end center fixed connection of foot bolt has the rodless cylinder, and the both sides fixed connection of rodless cylinder has the slide rail, the inside fixed of slide rail has and inserts the mouth, the upper end fixed connection of slide rail has the sliding block, and the inside fixed mounting of sliding block has the lock nail seat, the inside fixed mounting of lock nail seat has the fixed nail, the upper fixed mounting of sliding block has the receiving station, to solve the hosiery setting machine that the above -mentioned background art proposes is the equipment that is used specially for this craft, but the mechanism of setting machine mobile die carrier is the long strip shape structure, and the space is big to the longitudinal occupation, and the workpiece passes through the chain structure and drives the die carrier to move, and the chain structure is relatively complex, when the chain damage needs the maintenance, and the cost is higher, lead to the problem of hosiery production and maintenance cost increase.

The present invention relates to the technical field of large-scale marine equipment manufacturing, and discloses a manufacturing process for a large-scale pile gripper gantry walk, comprising the following steps: machining, making independent segments, staged closure, and large frame closure. The making of independent segments includes making shoulder beams, columns, connecting beams, and drive seat frames. The present invention simultaneously adopts the method of individual segmentation and sheet segmentation during manufacturing, which is more reasonable for occupying existing sites, has a simpler process, is more convenient for welding operations, and has high production operation efficiency. The welding process is reasonably controlled to avoid the influence of welding heat on welding deformation, reduce the difficulty of controlling the straightness, horizontality, and verticality of the structure, and effectively improve the precision of equipment manufacturing. During manufacturing, some steps that require machining are moved forward, avoiding exceeding the limit range of the machining equipment due to the size and weight of the structure, and saving a large amount of machining costs accumulated in the final construction period.

The application discloses a heat radiator profile cutting and rotating processing integrated process and relates to the heat radiator profile processing technical field.The process comprises the following steps: S1, feeding; S2, clamping and positioning; S3, cutting; S4, reference detection and compensation; S5, boss processing; and S6, unloading.The cutting, reference detection and compensation and boss processing are integrated in the same station, the double steel saws are arranged in series, the non-contact sensor is used for on-line detection of the cutting end face, the rotating reference and the sawing starting position are compensated in real time, the profile cutting and the high-precision processing of the end boss are completed once clamping is achieved, the transfer link in the traditional segmented processing is eliminated, the workpiece bump damage is avoided, the processing precision and the good product rate are obviously improved through the closed-loop control mechanism, and the flexible processing of various boss shapes such as the circular shape and the polygonal shape can be adapted.

This process is used for machining conical wooden workpieces with longitudinal sides that are angled to each other and curved along their length. A first planing tool is used to plane one longitudinal side along the curve of that side, while a second planing tool is used to plane the opposite longitudinal side (in the direction of travel) along this same curve, overlapping the two planes to achieve the desired taper. This is accomplished by adjusting the position of the second planing tool relative to the first, perpendicular to the workpiece's direction of travel, as the workpiece passes through the machine. The longitudinal sides of the workpiece are planed in such a way that they retain their curve after the planing process. Because the machining process follows the curvature of the workpiece, minimal wood waste is generated, resulting in optimal wood yield.

The utility model relates to the field of jigs, in particular to a jig platform leveling device. The utility model provides a jig platform leveling device which comprises an installation bottom plate, locking blocks, ball screws, adjusting blocks and a jig plate, the bottom of the installation bottom plate is connected with the locking blocks distributed front and back in a bilateral symmetry mode, the outer side faces of the locking blocks are connected with the ball screws in a threaded mode, and the adjusting blocks distributed front and back are connected in the installation bottom plate in a bilateral symmetry and sliding mode. The inner ends of the ball head screws are in contact fit with the adjusting blocks, and a jig plate is placed on the mounting bottom plate. Through the combination of the lifting devices with the four independent corners and the ball head screws, the jig platform achieves accurate fine adjustment of the height, the levelness error is controlled within an extremely small range, and it is ensured that machining and detection work meets the high-precision requirement, so that the product quality and the process stability are improved, and the production efficiency is improved. And an operator can quickly and independently adjust each corner only by rotating the ball head screw, and complicated tools or professional skills are not needed, so that the leveling process is simplified.