1258 results about "Mechanical components" patented technology

The invention relates to the field of abrasion morphology determination and abrasion loss calculation, and discloses an abrasion morphology and contact stress analysis and prediction method and system based on a rough contact surface, a medium and equipment, and the method comprises the steps: constructing a dynamic contact model, and obtaining an accurate movement rule and a stress analysis result of a moving mechanical component; constructing a three-dimensional rough surface digital twinborn model conforming to an actual contact surface; establishing a contact stress field multi-physical field analysis model to obtain elastic deformation and a friction heat effect; based on the contact stress distribution and the local wear rate which are obtained in real time, carrying out dynamic reconstruction on the wear morphology, and establishing a nonlinear iteration relation between the wear loss and the contact stress distribution; determining an accurate boundary condition based on an accurate movement rule and a stress analysis result of the moving mechanical component, and constructing a failure criterion based on contact stress gradient mutation and surface roughness evolution; key parameters are calibrated through experiments, and a mapping relation database of wear rate-stress state-morphological characteristics is established so as to carry out friction wear analysis.

The invention discloses a mechanical part pre-deformation clamping process method based on simulation analysis, and relates to the technical field of mechanical manufacturing. The method comprises the following steps that S1, a design drawing, material characteristic parameters, blank size specifications and technical parameters of a clamp system of a to-be-machined part are collected; according to the method, an integrated simulation model of a part, blank and clamp system is constructed, blank key parameters and the constraint relation of all parts are fused, multi-field coupling simulation is combined, the theoretical deformation field pre-judgment precision is greatly improved, reliable data support is provided for pre-deformation design, a target compensation curved surface is generated through a geometric inversion algorithm, and the pre-deformation design precision is improved. By matching with a pre-deformation clamp with an adjusting mechanism, reverse pre-deformation is realized, differences of different batches of blanks are adapted, machining and rebound deformation are effectively counteracted, simulation and process parameters are corrected through a detection result by means of a closed-loop optimization mechanism, machining precision stability is guaranteed, trial cutting cost and rejection rate are reduced, and the method is suitable for machining of various easily-deformed parts.

The invention discloses a chamfering machine for machining mechanical parts, and belongs to the technical field of chamfering machines, the chamfering machine for machining the mechanical parts comprises a fixed rack, and a sliding limiting mechanism is fixedly mounted in the center of the top of the fixed rack; a rotary limiting mechanism is fixedly mounted at the center of the top of the sliding limiting mechanism, a rotary feeding mechanism matched with the rotary limiting mechanism is further fixedly mounted at the top of the fixed rack, and two sets of symmetrically-arranged turning and chamfering mechanisms are slidably mounted on the two sides of the top of the sliding limiting mechanism correspondingly; a servo driving mechanism used for driving the two turning and chamfering mechanisms is installed at the bottom of the sliding limiting mechanism. According to the rotary feeding mechanism simple in design, the left feeding disc and the right feeding disc are controlled by the first servo motor to move, so that the conveying, machining pause and conveying and discharging processes are smoother, the machining pause time is shortened, and meanwhile the overall machining efficiency is improved.

The utility model relates to the technical field of ship mechanical part machining, in particular to a polishing device for ship mechanical part machining, and solves the problem that in the prior art, ship mechanical parts of different shapes and sizes cannot be conveniently adjusted and fixed, so that the polishing effect is poor. A polishing device for ship mechanical part machining comprises a machining table and a polishing machine, the machining table is provided with a sliding groove, the interior of the sliding groove is slidably connected with a mounting block, the top of the mounting block is provided with a bearing plate through a buffering mechanism, the surface of the bearing plate is fixedly connected with four supporting blocks, and the surfaces of the supporting blocks are in threaded connection with screws; a clamping drill is fixedly connected to the surface of the screw rod, a plurality of limiting grooves are formed in the surface of the bearing plate, and limiting rods are arranged in the limiting grooves in a penetrating mode. According to the polishing fixture, clamping and fixing of parts with different shapes and sizes are guaranteed, so that the parts can be normally polished, and the polishing effect of the parts cannot be affected.

The utility model relates to the technical field of mechanical part machining, and discloses a punching device for mechanical part machining, which comprises a machining table, the top of the machining table is provided with a collecting groove, and one side of the collecting groove is provided with a movable opening; the first supporting column is arranged at the top of the machining table; the second supporting column is arranged on the top of the machining table. By starting the telescopic rod, the telescopic rod operates to drive the clamping plate to move through the first connecting block, the clamping plate moves to drive the rack to move through the second connecting block, the rack moves to drive the other rack to move through the gear, and the other rack moves to drive the other clamping plate to move through the other second connecting block. The two clamping plates move oppositely to clamp the mechanical part needing to be punched, then the motor is started, the motor operates to drive the threaded rod to rotate, the threaded rod rotates to drive the placing table to move, the placing table moves to drive the mechanical part to move, and therefore the effects of clamping the mechanical part and driving the mechanical part to move are achieved.

The invention discloses a subway tunnel construction segment water seepage detection device, and relates to the technical field of subway tunnel construction segment water seepage detection. The subway tunnel construction duct piece water seepage detection device comprises a frame, the bottom of the frame is fixedly connected with an electric moving part, the bottom of the frame is fixedly connected with an electric steering part, the top of the frame is fixedly connected with an auxiliary mechanism, and the frame is provided with a remote control chip. Power-on starting of the electric moving part can drive the whole part to move, and power-on starting of the electric steering part can change the moving direction of the frame. According to the subway tunnel construction duct piece water seepage detection device, through cooperation of the electric moving component and the steering component, the device can automatically move along the surface of a duct piece, the advancing direction is adjusted, and detection areas at different longitudinal positions are covered; a first mechanical part in the auxiliary mechanism drives the connecting rod to lift, and a second mechanical part drives the detection mechanism to rotate.

The invention discloses a voice-driven mechanical element modeling method and system. A user inputs a natural language instruction containing a design intention into the CAD system through voice, and the natural language instruction is analyzed into a structured operation instruction; meanwhile, selecting a reference model, generating a geometric code corresponding to each surface based on a local geometric attribute corresponding to each surface of the model, and constructing a geometric structure coding matrix; predicting each machining surface in the machining features by using the machining surface prediction network to obtain a sequence formed by all machining surface IDs of the machining features in sequence, and recording the sequence as a machining surface ID sequence; and finally, executing API (Application Program Interface) calling of the CAD platform, and finally obtaining a model of the target mechanical element. According to the method, by connecting the high-level design intention and the bottom-level geometric operation of a designer, the tedious interaction and cognitive burden caused by manual selection and operation of low-level geometric elements (points, edges and surfaces) in traditional direct modeling is avoided, and the design efficiency is remarkably improved.

The invention belongs to the technical field of agricultural robots, and particularly relates to a multi-degree-of-freedom double-arm pear fruit picking robot based on an agricultural machinery and agricultural technology fusion idea, which comprises a walking chassis, a picking system, a fruit collecting system, a visual system, a control system and an endurance system, the walking chassis is mainly used for bearing mechanical parts and picked fruits, walking in a field and providing power for the whole picking robot, the picking system is carried on a picking robot body and mainly used for grabbing recognized pears capable of being picked, and the fruit collecting system is carried on the picking robot body and used for collecting the fruit collected by the fruit collecting system. The picking robot body is used for conveying the picked pears into the fruit collecting box, and the visual system is carried on the picking robot body. The device can adapt to the picking operation of standardized pear garden planting agriculture in different planting modes, is highly integrated and automatic, can effectively improve the pear fruit picking operation efficiency, greatly reduces the dependence on the labor cost, and achieves the intelligent upgrading of agricultural production.

The utility model discloses a double-cylinder EPB (electronic parking brake). The brake comprises a driving mechanism assembly, a shell assembly, a transmission mechanism assembly, a friction plate assembly and a bracket assembly, the driving mechanism assembly comprises a motor and a reduction gear box, and the driving mechanism assembly outputs motor torque through two output ends; the shell assembly serves as an external structure of the brake and accommodates and fixes internal mechanical components. The transmission mechanism assembly comprises two transmission mechanisms which convert motor torque output by the two output ends of the driving mechanism assembly into axial motion to drive a piston to move. The friction plate assemblies comprise an inner friction plate assembly and an outer friction plate assembly which are driven by the piston to clamp the brake disc; the support assembly is connected with the shell assembly through bolts, fixes and supports the brake, and guides and limits path movement of a piston and a friction plate in the braking process.

The invention relates to the technical field of mechanical parts, and discloses a high-bearing engineering plastic worm gear applied to a light truck electric power steering system and a manufacturing process, and the manufacturing process comprises the following steps: pretreatment of a polymer base material, preparation of a composite reinforcing material, preparation of an injection molding raw material, precise injection molding, post-treatment and detection. After a polymer base material is subjected to fluorination activation treatment, the surface energy of the material is reduced, the interfacial compatibility with a composite reinforced material is enhanced, and through the synergistic effect of chemical bonding and physical anchoring formed between matrix resin and a modified reinforcement body, the interfacial layering tendency of engineering plastic and a fiber reinforced phase is overcome, so that stress transmission is more uniform; meanwhile, the functional additive components generate an in-situ synergistic effect in the precise injection molding process, and form a multi-stage enhanced network with matrix resin, so that the worm wheel matrix is endowed with excellent overall bearing strength and fatigue fracture resistance, and the structural integrity under the working conditions of high load and high-frequency steering is ensured.

A friction spacer adapted to be interposed between two mechanical components in order to transfer a force between the two mechanical components, the friction spacer including a flat part having two opposite surfaces defining a thickness, and a plurality of protuberances projecting from at least one of the surfaces, the protuberances of the plurality of protuberances extending from the at least one of the opposite surfaces by a determined average height. The flat part and the protuberances are produced from the same metal material, and the same metal material continuously extends between the flat part and the protuberances.

The invention relates to the technical field of mechanical part surface defect detection, in particular to a mechanical part surface defect detection system and method.The method comprises the steps that an original point cloud data set of the surface of a mechanical part is collected; calculating the normal deviation distance from each sampling point to the surface of the standard CAD model along the local normal vector direction; determining an included angle between a local normal vector and a neighborhood average normal vector of each sampling point; calculating to obtain a point cloud credibility index of the sampling point; constructing a dynamic defect judgment threshold value of the sampling point; comparing the normal deviation distance with a dynamic defect judgment threshold value; marking the sampling points as defect candidate points in response to the condition that the normal deviation distance is greater than a dynamic defect judgment threshold value; if the dynamic defect judgment threshold value is not greater than the dynamic defect judgment threshold value, marking as a non-defect point; performing spatial clustering processing on all the sampling points marked as the defect candidate points to form independent defect areas; according to the method, the inherent contradiction of a traditional fixed threshold value method is solved, and the detection accuracy and reliability are remarkably improved.

The mechanical part polishing device comprises a base, a first support, a second support, an adjustable clamping mechanism and a polishing mechanism, the first support and the second support are arranged at the top of the base respectively, a round pipe to be polished is arranged above the base and located between the first support and the second support, and the adjustable clamping mechanism is arranged on the base. A round rotating seat is rotationally arranged on the first support; the adjustable clamping mechanism is arranged on the round rotating seat and connected with a round pipe to be polished, and the adjustable clamping mechanism comprises two inner supporting blocks, two outer supporting blocks, four sets of telescopic clamping pieces and a driving structure; the grinding mechanism is arranged on the second support and comprises two electric polishing rollers and a pushing adjusting structure. Therefore, the inner surface and the outer surface of the circular pipe mechanical part can be polished at the same time, the circular pipe mechanical part is driven to rotate, the clamping position is switched, it is guaranteed that all areas of the surface of the circular pipe mechanical part can be polished, and the polishing quality and efficiency are guaranteed.

The invention discloses a strong-combination wide-temperature-range wear-resistant composite coating, and relates to the technical field of solid lubricating materials, the composite coating comprises a transition layer, a functional inner layer, a diffusion barrier layer and a functional outer layer which are sequentially formed on the surface of a matrix, the transition layer is a Mo layer and a Mo2N layer, the functional inner layer is a MoAgN layer, the diffusion barrier layer is a Mo2N layer, the functional outer layer is a MoAgN layer, and the functional inner layer is a MoAgN layer. The functional outer layer is a MoAgN layer, and the MoAgN layer comprises a Mo2N phase and an Ag phase. The invention further discloses a preparation method of the composite coating and application of the composite coating in the field of solid lubrication protection. The composite coating is good in film-substrate binding force and low in friction coefficient and wear rate in a wide temperature range, damage to key mechanical parts in the air foil bearing caused by high-temperature lubrication failure can be avoided, and the tribological performance of the bearing parts under the working condition of the wide temperature range is improved.

The invention discloses a welding equipment positioning device for mechanical part machining, and relates to the technical field of machining. The device comprises a case, and a control panel is arranged on the front face of the case; a clamping mechanism is arranged in an inner cavity of the machine box and comprises a fixing ring fixedly connected to the inner cavity of the machine box, a through groove formed in the surface of the fixing ring and a threaded pipe arranged in an inner cavity of the through groove. Single motor driving is adopted to be matched with the self-adaptive switching mechanism, intelligent power distribution is achieved through magnetic ring repulsive force and gear clutch, the economic cost of a multi-motor system is remarkably reduced, the self-adaptive switching mechanism (a cam, a sliding block and a driving rod are linked) enables the clamping plate to be separated from a transmission chain in real time according to the outline of a part, and the clamping efficiency is improved. The device can adapt to irregular surfaces without a sensor, damage to the sensor caused by a high-temperature environment during operation of welding equipment is avoided, and the use reliability and long-term precision stability of the device under complex working conditions are improved.

The invention relates to a bionic rotifer preying wheel disc type composite underwater target collection device and method, the collection device comprises an underwater robot and a bionic collection head, and the underwater robot is provided with a high-definition camera, a foresight sonar, an adjustable highlight LED underwater lighting lamp and a seabed in-situ metal measurement sensor; the bionic collecting head is provided with a bionic roller wheel and a conveying pipeline; the conveying pipeline is of a Venturi tube type conveying structure, and bionic protruding structures are arranged on the surfaces of the bionic roller wheels. The bionic roller wheels are coaxially connected with rotating output shafts of the waterproof driving motors correspondingly, and the waterproof driving motors drive the bionic roller wheels on the two sides of the conveying pipeline to rotate and vibrate relatively. Disturbance on a seabed sedimentary layer and influence on a seabed ecological environment can be reduced, so that collecting mechanical parts are not easy to damage in operation, the service life is prolonged, and the safety and the accuracy are improved; seabed ocean current disturbance is reduced, and an acquisition path is accurately controlled; energy consumption is reduced, jamming is avoided, sampling efficiency is improved, and the application range is widened.

The invention discloses a safety monitoring method and system for a gas pressure reducer, and belongs to the technical field of mechanical equipment state monitoring, and the method comprises the steps: obtaining the outlet pressure, flow, valve body temperature and vibration signals of the gas pressure reducer, and obtaining multi-source monitoring data; working condition excitation is applied to the gas pressure reducer, changes of the multi-source monitoring data in the excitation period are synchronously collected, and excitation response data are generated; extracting pressure recovery time, vibration spectrum change and temperature change gradient from the excitation response data, and combining the pressure recovery time, the vibration spectrum change and the temperature change gradient into a dynamic feature set; performing coupling response analysis on the dynamic feature set to identify a response mode representing the health state of the internal mechanical part; based on the response pattern, a health status of the gas pressure reducer is quantitatively evaluated, generating a health index. By means of actively applying working condition excitation and carrying out coupling analysis on multi-source response data, the early failure mode of the internal mechanical part can be recognized, and the health state of the internal mechanical part can be quantitatively evaluated.

The invention relates to the technical field of automatic control, and discloses a pressure-sensing precision mechanical part polishing brush system and method.The system comprises a multi-mode pressure sensing module, an elastic feedback execution module, a self-adaptive trajectory planning module and a closed-loop quality control module; establishing a contact pressure distribution model and analyzing pressure balance, and generating local and global pressure compensation instructions according to the pressure balance; an elastic feedback mechanism is driven to dynamically adjust the axial pressure of the brush, and meanwhile, a self-adaptive polishing path containing a pressure compensation weight is planned by combining the morphology data; the feeding speed and the rotating angle are cooperatively adjusted in the polishing process, and precise machining of the complex curved surface is achieved; and finally, the surface roughness is detected through an optical sensor, and technological parameters are optimized in a closed-loop mode. The problems of surface scratches and contour distortion caused by uneven pressure distribution are solved, and the machining quality and consistency of precision parts are improved.

An ultrasonic surgical tool system with a tip capable of simultaneously vibrating in plural modes. The system includes a console capable of supplying a drive signal to the tip that includes plural components. Each component has a frequency characteristic that is based in part on the equivalent of current through the mechanical components of the tip. The frequency components are different from each other. Based on the application of drive signal the tip undergoes non-linear vibrations.

Disclosed herein are techniques for detecting runout of a rotating mechanical component. In example, detection of runout of a rotating mechanical component is performed using an angular position signal generated by a magnetic angular position sensor that is arranged for use in determining an angular position of the rotating mechanical component.

The invention discloses a mechanical part fatigue life prediction and optimization design method, and belongs to the field of mechanical engineering and material science. The comprehensive technical scheme based on multi-environmental-factor dynamic coupling, intelligent global optimization and real-time feedback adaptive adjustment is provided for solving the problems of insufficient consideration of multi-environmental-factor influence, inaccurate life evaluation and low optimization efficiency in the prior art. The method comprises the following steps: firstly, acquiring fatigue damage data of a mechanical part under various environmental factors, and establishing a comprehensive fatigue life prediction model; secondly, realizing global optimization of design parameters of the mechanical part by adopting an intelligent optimization algorithm, and prolonging the fatigue life; meanwhile, in combination with real-time monitoring data, parameters are adjusted and optimized in a self-adaptive mode, and dynamic optimization of mechanical parts in the service process is achieved. The method can significantly improve the accuracy of fatigue life prediction and the service life of the mechanical part, and is suitable for design, operation and maintenance of the mechanical part under complex working conditions.

The utility model relates to the field of aviation mechanical parts, in particular to aviation mechanical part reliability life analysis pressure detection equipment which comprises a workbench and is used for aviation mechanical part life analysis pressure detection. According to the pressure detection equipment for reliability and life analysis of the aviation mechanical part, through the arrangement of the protective cover, the sealing door, the electric heater, the hydraulic cylinder, the hydraulic pump, the connecting sleeve, the pressure sensor, the contact block, the driving signal controller and the display, the aviation mechanical part is placed on the placing plate, and the sealing door is closed; then multiple sets of electric heating devices on the two sides in the protective cover are turned on, the interior is heated through the electric heating devices, then a hydraulic pump switch is turned on, oil pressure is generated in the interior to push a hydraulic cylinder and a contact block at the lower end to press downwards, and therefore pressure detection is conducted on the mechanical parts; and data obtained by a pressure sensor above the contact block is transmitted to a driving signal controller, and then the driving signal controller transmits the data to a display for observation and analysis.

The invention relates to the technical field of mechanical part design, and discloses a flange bolt connection layout optimization design method and related equipment.The method comprises the steps that flange basic parameters are obtained, and a rigidity calculation model is constructed based on the flange basic parameters; bolt margin parameters are determined through sealing surface pressure distribution based on a rigidity calculation model; bolt spacing parameters are determined through pressure distribution changes based on a rigidity calculation model; and performing parametric modeling and simulation checking on the determined bolt edge distance parameters and bolt spacing parameters by taking the pressure distribution change rate as a checking parameter to obtain a design result, and completing flange bolt connection layout optimization design through the design result. According to the method, discrete experience is upgraded into a continuous scientific model, the design reliability is remarkably improved, static strength design of a traditional empirical formula is replaced, and therefore the sealing reliability is remarkably improved, the method adapts to complex working conditions, and the design period is greatly shortened.

The utility model discloses a space-adjustable part clamping device, which relates to the technical field of mechanical part processing and comprises a case body, a workbench horizontally arranged on the case body, insertion blocks symmetrically arranged above the middle of the workbench in a sliding manner, second clamping blocks arranged on the insertion blocks, and movable seats symmetrically arranged on the workbench and used for getting close to each other or getting away from each other. A cylinder is arranged on the side portion of the second supporting seat, the telescopic shaft end of the cylinder is connected with the side portion of a movable plate, the movable plate is connected with a third supporting seat, and a first clamping block is arranged on the side portion of the third supporting seat. According to the space-adjustable part clamping device, the two first clamping blocks close to each other are used for conducting center positioning and clamping on cylindrical or shaft parts with large sizes, the insertion block and the second clamping block are arranged, the relative position of the insertion block on the workbench can be adjusted, and therefore the space-adjustable part clamping device can adapt to parts with different diameters or sizes.

The utility model relates to the field of polishing devices, in particular to a mechanical part machining and polishing device which comprises a bearing table, a clamping and fixing assembly and a polishing assembly. Sliding clamping and fixing assemblies used for flexibly clamping mechanical parts are symmetrically arranged at the two ends of the upper portion of the bearing table, and sliding grinding assemblies used for grinding the mechanical parts at multiple angles are symmetrically arranged at the edges of the two sides of the upper portion of the bearing table. A part is placed on the bearing table, the clamping and fixing assembly is adjusted according to the size condition of the part and fixes and clamps the part, then the grinding assembly is adjusted according to the position, needing to be ground, of the part, grinding treatment is conducted on the part from different angles, and in the grinding process, the grinding efficiency is greatly improved. The clamping and fixing assembly can flexibly adjust the orientation of the part, different faces of the part can be conveniently polished, the workpiece can be rapidly and accurately clamped through the clamping structure capable of being flexibly adjusted, rapid fixing of the workpiece is achieved, the time needed for replacing and adjusting the clamping mode is shortened, and the production efficiency is improved.

The invention relates to the technical field of machining, and discloses a high-precision machining control method and system based on deep learning, and the method comprises the steps: collecting the operation data of a machine tool in real time through a multi-sensor array, and carrying out the data preprocessing; extracting a minimum feature subset most relevant to energy consumption from machine tool operation data by using an information bottleneck principle; constructing a lightweight energy consumption prediction model based on a sparse Bayesian learning method; the processing track is decomposed into two levels of macroscopic path planning and microcosmic speed planning, and linkage adjustment of the macroscopic path planning and the microcosmic speed planning is achieved through a collaborative optimization algorithm; an improved Transform deep learning architecture is adopted to process historical trajectory data, key points and modes in a trajectory are identified through a self-attention mechanism, and trajectory parameters are dynamically adjusted; energy conservation and emission reduction in the mechanical part machining process are achieved by bringing the energy consumption index into the trajectory optimization target, and energy consumption is reduced.

The invention discloses a casting grinding, clamping and supporting device, relates to the technical field of casting machining, and aims to solve the problems of poor adaptive capacity, low cooperative control precision, lack of real-time monitoring and weak adaptability in the prior art. The device comprises a casting information sensing module, a clamping parameter decision-making module, a supporting posture regulation and control module, a grinding collaborative adaptation module, a real-time monitoring feedback module and a central control module, clamping and supporting parameters are decided through sensing casting information and an intelligent algorithm, synchronous adaptation with grinding movement is achieved, the parameters are dynamically corrected in combination with real-time monitoring feedback, full-process closed-loop control is formed, and the grinding efficiency is improved. The casting polishing device can adapt to polishing of various castings without replacing mechanical assemblies, the polishing precision, stability and machining efficiency are effectively improved, and the casting polishing device is suitable for various casting polishing scenes.

The utility model relates to the technical field of grabbing assemblies, and discloses a grabbing assembly for mechanical parts, which comprises a base, a steering mechanism is mounted at the top end of the base, a connecting arm is fixedly connected to the front end of the steering mechanism, a driving device is mounted at the front end of the connecting arm, a mounting column is mounted at the bottom of the driving device, and the mounting column is fixedly connected with the steering mechanism. And a rotating column is rotationally connected to the interior of the mounting column. According to the grabbing assembly for the mechanical parts, a worker inserts a connecting column into a rotating column, aligns an inserting rod to an inserting groove and rotates the rotating column, so that the rotating column drives a pushing block and the inserting rod to move, and when the pushing block makes contact with the thick end of an arc-shaped block, the arc-shaped block extrudes the pushing block, so that the pushing block pushes the inserting rod to be inserted into the inserting groove; in this way, the purpose of installation is achieved, a worker can conveniently replace an adaptive grabbing device to grab different mechanical parts, and meanwhile the worker can conveniently overhaul and maintain the grabbing device.

The utility model discloses a multifunctional machining center which comprises a machining case, a supporting frame body, a machining assembly and a machining platform, a supporting table is arranged on the top of the machining platform, a fixed bottom box is arranged on the top of the supporting table, a first adjusting screw is arranged in the middle of the fixed bottom box, a first moving pipe is arranged on the first adjusting screw, and a second moving pipe is arranged on the second adjusting screw. A connecting column is arranged between the outer side of the first moving pipe and the fixed bottom box, connecting side blocks are arranged at the end of the connecting column, a fixed side plate is arranged between the connecting side blocks, two first fixed bins are symmetrically arranged in the end, close to the top, of the fixed side plate, and a second adjusting screw rod is arranged in the middle of each first fixed bin; a second moving pipe is arranged on the second adjusting screw rod, a positioning side plate is arranged on one side of the second moving pipe, and two second adjusting knobs are arranged on one side of the fixing side plate. According to the utility model, the positioning side plates, the clamping plates and other parts are matched for use, so that mechanical parts can be conveniently positioned and fixed, and the machining work is facilitated.

This invention relates to a wear-resistant shovel blade for engineering machinery and its preparation method, belonging to the field of engineering machinery parts manufacturing technology. The specific preparation method involves: after rolling, quenching, and high-temperature tempering, the shovel blade material undergoes carburizing treatment using ion plating. Then, a W transition layer and a WTiTaB boride gradient coating with varying composition are prepared using magnetron sputtering. This invention combines the WTiTaB boride gradient coating, physical vapor deposition, and carburizing technology, which can mitigate the difference in physical properties between the boride coating and the substrate material of the shovel blade, improve the surface hardness and support of the substrate material, and result in high surface hardness, core toughness, and excellent tribological properties. Compared with traditional carburizing processes, the surface hardness is increased by nearly three times, the surface treatment time is shortened by more than 90%, and the wear rate is reduced by 78-83%.