84 results about "Mechanical products" patented technology

The invention discloses a straight tooth extrusion wheel for internal spline inverted conical teeth and a machining method for the internal spline inverted conical teeth, and belongs to the technical field of mechanical product machining. The method comprises the following steps: broaching a to-be-processed workpiece to form an internal spline straight tooth structure; the straight tooth structure of the internal spline is subjected to inverted conical tooth extrusion machining, and metal allowance generated by extrusion deformation synchronously flows to the tooth side area and the small-diameter area of the internal spline; a straight tooth extrusion tool matched with an inverted conical tooth extrusion tool is adopted, secondary extrusion machining is conducted on the straight tooth area of the internal spline, and metal allowance flowing to the tooth side area of the internal spline is completely transferred to the small-diameter area; and the small-diameter area of the internal spline is machined, a bulge structure formed by the transferred metal allowance is removed, and machining of the reverse taper teeth of the internal spline is completed. Secondary gear burnishing is used, the small-diameter allowance is removed through follow-up machining, and the problem that the machining cost of an original internal spline reverse taper gear is too high is solved.

The invention discloses a mechanical product multi-field simulation and prediction system based on digital twinning, and relates to the technical field of thermal error digital twinning. A main shaft load current, a rotating speed, a bearing temperature, a workpiece surface temperature and a cooling liquid parameter are obtained in real time; rapidly predicting a first thermal error according to the load current and the rotating speed by using a preset multi-layer feed-forward neural network, dynamically calculating a thermal inertia time coefficient in combination with the cooling liquid efficiency and the thermal state of a workpiece, and filtering and extracting a slowly-changing thermal state from the temperature of a main shaft bearing according to the thermal inertia time coefficient, thereby obtaining second thermal error prediction; a fusion weight is generated according to the load current change rate and the thermal inertia time coefficient, weighted fusion is carried out on the two predicted values, and a compensation instruction is output; and by monitoring the stability of the fusion weight, the thermal inertia time is reversely and dynamically adjusted to suppress oscillation. According to the method, high-robustness and self-adaptive accurate compensation of complex thermal errors is realized in field processing with changeable environments and working conditions, and the long-term stability of processing precision is remarkably improved.

The invention discloses a mechanical product overhaul life determination method based on preventive maintenance, and relates to the technical field of mechanical product reliability and maintenance engineering, and the method comprises the following steps: S1, constructing a mechanical product disciplinary cross equation; s3, constructing a mechanical product performance degradation model based on preventive maintenance, and estimating unknown parameters by adopting a maximum likelihood estimation method so as to determine a relationship between a performance degradation amount and time; and S4, estimating parameters of the performance degradation model and finally determining the overhaul life of the mechanical product. According to the method, the influence of preventive maintenance on the mechanical product performance is comprehensively considered, the performance fluctuation and degradation process caused by the maintenance activity is described by constructing the segmented performance degradation function, and the relationship between the performance degradation amount and the time is determined by using the maximum likelihood estimation method; and the finally determined overhaul life of the mechanical product is more accurately applied to an actual engineering scene.

This application provides a method for uncertainty analysis in mechanical product assembly performance simulation. This method considers the impact of various uncertainty factors at different stages of the simulation process on assembly performance, classifying these factors into two categories for quantitative analysis. The first category includes the measurement, modeling, and simulation analysis stages in the early stages of simulation; the uncertainty u or error of these factors can be directly calculated. The second category consists of assembly performance uncertainties caused by external loads, boundary conditions, and nonlinear processes primarily based on geometric error distribution. For this category, this method uses simulation analysis results from a physical digital twin model, combined with the construction of an optimal SVR surrogate model and Sobol global sensitivity analysis, to quantitatively analyze the sensitivity of assembly performance to process parameters. In summary, this method provides guidance for the product assembly process.

The invention relates to semi-automatic material loading and unloading equipment, belongs to the technical field of production material logistics treatment devices, and is used for circulating and conveying materials such as raw materials, tools, semi-finished products and finished products in the production process of mechanical products. Comprising a transferring assembly, a supporting assembly, a sliding rail assembly and the like. The power roller drives the belt to load and unload materials, the electrode drives the transferring assembly and the supporting assembly to slide along the guide rail to carry the materials, and the equipment is good in stability, high in operation efficiency, simple in structure and light in self weight. The material circulation efficiency is improved, the production cost and the labor intensity are reduced, and safety accidents in the carrying process are effectively reduced.

1. Name of the designed product: adjusting screw. 2. Use of the designed product: used in engineering machinery and other mechanical products. 3. Design points of the designed product: in shape. 4. Picture or photo showing the design points: perspective view.

The invention provides a Composer-based pipeline fluid simulation and mechanical motion scene design method. The method comprises the following steps of: simulating a demonstration animation by mechanical structure motion; pipeline fluid flow simulation demonstration animation; and disassembling the simulation demonstration animation by the equipment assembly body. According to the invention, in daily digital design work, an existing digital product model can be conveniently and rapidly utilized to dynamically display the aspects of assembly, principles and the like, such as simulation demonstration of a complex pipeline system operation process and a system principle, simulation demonstration of technological process decomposition of a large-scale product, simulation demonstration of equipment maintenance and the like; and simulating and demonstrating a working scene of a mechanical product.

The present application relates to the field of laser welding, especially to a mechanical product multi-station laser welding machine. The mechanical product multi-station laser welding machine comprises a workbench, a laser, a three-axis module, an inclination mechanism, a laser head, a feeding mechanism and the like; the workbench is internally provided with the laser, the top of the workbench is provided with the three-axis module, the laser head is installed on the three-axis module through the inclination mechanism, and the laser head can adjust the pitch angle under the action of the inclination mechanism. Through the clamping piece, in the process of clamping the workpiece, when one small semicircular block contacts the workpiece, the large semicircular block and the middle semicircular block will automatically rotate until the other small semicircular block contacts the workpiece, and then the large semicircular block and the middle semicircular block stop rotating, so that each small semicircular block clamps the workpiece, so that the workpiece can be fixed more stably, and the fixation of workpieces with different shapes can be adapted.

A cutting insert (1) comprising: a basic body (3), comprising a first area (9), a second surface (11) which is arranged on one of the sides opposite the first surface (9), a first side surface (13) which is connected to the first surface (9) and the second surface (11), a second side surface (15) connected to the first surface (9), the second surface (11) and the first side surface (13), a first recess (17) which leads into the first surface (9), the first side surface (13) and the second side surface (15), and a second recess (19) which leads into the second surface (11), the first side surface (13) and the second side surface (15), a first part (5) with a triangular plate shape, which is arranged in the first recess (17) and has a first cutting edge (21) which is arranged at an intersection of two adjacent surfaces, and a second part (7) with a triangular plate shape, which is arranged in the second recess (19) and has a second cutting edge (23) which is arranged at an intersection of two adjacent surfaces, wherein the first recess (17) has a first floor surface (25) which is arranged away from the first surface (9), a first wall surface (27) which is arranged between the first floor surface (25) and the first surface (9), and a first valley line (29) which is located at an intersection of the first floor surface (25) and the first wall surface (27), the second recess (19) a second floor surface (31) which is arranged away from the second surface (11), a second wall surface (33) which is arranged between the second floor surface (31) and the second surface (11), and a second valley line (35) which is located at an intersection of the second floor surface (31) and the second wall surface (33), and where the first valley line (29) intersects the second valley line (35) in a perspective view onto the first surface (9).

The utility model relates to the technical field of mechanical product detection, and discloses a high-precision detection device for long cylinder radial run-out, which comprises a supporting underframe, a guide rail platform is fixedly connected to the upper surface of the supporting underframe, and a lateral limiting frame is fixedly connected to the left side of the upper surface of the guide rail platform. A drivable bearing supporting device, a measuring meter supporting frame and a limiting bearing supporting device are slidably connected to the upper portion of the guide rail platform through sliding block connecting assemblies, and guide rail locking devices are fixedly connected to the outer side of the limiting bearing supporting device and the outer side of the drivable bearing supporting device through bolts. According to the utility model, through the cooperation of the guide rail platform, the servo motor, the drivable bearing supporting device, the measuring meter supporting frame, the limiting bearing supporting device and other structures, the adaptability of the device is improved, workpieces with different shaft diameters and lengths can be measured, one-machine detection of workpieces with multiple sizes is realized, and the detection efficiency is improved. And the use cost and the occupied space are greatly reduced.

The utility model relates to the technical field of marking machine brackets, in particular to a portable bracket for a marking machine, which aims to solve the technical problem that the marking area and efficiency are limited by the shape of a bracket in the use process due to the irregular characteristics of mechanical products, and comprises a marking machine connecting bracket, the marking machine connecting support is connected to the lower portion of the portable marking machine, the bottom wall of the marking machine connecting support is connected with the positioning support, the length and the width of the positioning support are smaller than those of the surface of a marked workpiece, and the marking head can move in the marking machine connecting support and the positioning support. The shapes of the connecting support and the positioning support of the marking machine are directly machined in a punch forming or bending forming mode, the machining mode is simple, production and machining of products are facilitated, operation is easy during installation, in the using process, when mechanical products with irregular characteristics are marked, marking work can be completed more excellently and rapidly in a limited marking area, and the production efficiency is improved. And interference with other characteristics is avoided.

The invention discloses a reliability evaluation method and device for a ship iterative mechanical product, a medium and a product, and relates to the field of reliability evaluation of ship mechanical products, and the method comprises the steps: obtaining a historical degradation and failure data set of a similar product of a target product; the historical degradation and failure data set is preprocessed; obtaining a degradation trend model of the similar product based on the preprocessed historical degradation and failure data set; acquiring supplementary test data of the target product; based on the supplementary test data, improving the degradation trend model to obtain a target product degradation trend model; and performing reliability evaluation on the target product based on the target product degradation trend model to obtain a multi-dimensional reliability evaluation index of the target product. According to the invention, the reliability evaluation efficiency, accuracy and real-time performance of the ship mechanical product can be improved.

The invention relates to the technical field of assembly task allocation, and discloses a mechanical product assembly task allocation method and system, which are used for solving the problems that when a plurality of available schemes exist during mechanical product assembly task allocation, the optimal scheme cannot be accurately selected, and the schemes cannot be adjusted in real time according to field state changes. Calculating and evaluating all the preliminary task allocation schemes to obtain a qualified task allocation scheme set, calculating a corresponding multi-dimensional normalized margin value for each qualified task allocation scheme in the qualified task allocation scheme set, selecting a final task allocation scheme, performing conflict detection on the final task allocation scheme, and if a conflict exists, determining that the final task allocation scheme does not exist. If yes, correcting the final task allocation scheme to obtain a final corrected task allocation scheme; and if the conflict item does not exist, the final task allocation scheme is directly regarded as the final corrected task allocation scheme, so that the continuity and intelligence of the mechanical product assembly process are effectively improved.

The invention relates to the field of simulation, in particular to a simulation test method and device for a mechanical product, electronic equipment and a storage medium, and the method comprises the steps: obtaining project information of a research and development product from a mechanical product research and development system, and controlling a design end to transmit the project information to a simulation end for display; controlling the simulation end to create a simulation task corresponding to the research and development product based on the project information, and controlling the simulation end to display the simulation task; a simulation report obtained after execution of the simulation task is completed is obtained, and the simulation end is controlled to display the simulation report; controlling the simulation end to transmit a verification result of the simulation report to the design end for display; responding to the test operation of the research and development product based on the verification result in the design end, generating a test task, and controlling the design end to send the test task to the test end for display; and obtaining a test report after the execution of the test task is completed, and displaying the test report at the design end, the test end and the simulation end. According to the invention, the research and development efficiency of mechanical products is improved.

A marine garbage cleaning device includes a frame, a conveyor belt is provided on the frame, a pulley is provided at the output end of the conveyor belt, an output wheel is connected to the pulley, a double-headed motor is connected to the output wheel, a front roller is provided at the input end of the conveyor belt, swingable outer swing arms are provided on both sides of the input end of the conveyor belt, and a garbage bin is provided below the output end of the conveyor belt. The beneficial effects of the present invention are: it can realize the automatic collection of marine garbage, greatly improve the efficiency of marine environmental sanitation cleaning, save time and labor, and can reduce the danger of marine garbage disposal, ensure the personal safety of workers, and as a mechanical product, it can help the majority of working people reduce their safety risks and meet the needs of marine garbage disposal in harsh environments.

This invention discloses a method for constructing a knowledge graph from 3D digital model design data for mechanical products. It primarily addresses the problem that existing technologies cannot acquire, represent, and reuse 3D model design data. The implementation scheme is as follows: 1) Integrating and processing the 3D model data; 2) Constructing a knowledge acquisition program to extract a total knowledge set from the 3D model; 3) Representing and constraining the total knowledge set to obtain a processed knowledge set; 4) Instantiating and tree-forming the processed knowledge set to generate feature trees representing functions, structures, and constraints; 5) Analyzing and processing the obtained feature trees to form sets of structure-structure, structure-function, and structure-constraint relationships; 6) Importing the obtained feature trees and relationship sets into triplet form into Neo4j to generate a knowledge graph. This invention can extract, represent, and reuse design data from 3D digital models and can be used for intelligent design of structural schemes for mechanical products.

The invention provides a complex mechanical product demand tracing method based on a demand management model, and the method comprises the steps: firstly analyzing a SysML demand model of a complex mechanical product, and constructing a heterogeneous graph structure with multiple attributes; constructing a heterogeneous graph neural network model based on an HGT architecture, and training the heterogeneous graph neural network model by adopting a training data set containing positive and negative samples and pseudo label data; verifying the correctness of the demand relationship in the SysML demand model of the complex mechanical product by using the trained heterogeneous graph neural network model, and identifying hidden demand association; and when a new demand or relationship is added, dynamically updating the heterogeneous graph neural network model through an incremental learning method. According to the method, automatic verification of the demand relationship and mining of potential association are realized, and the efficiency and reliability of demand management of complex mechanical products are remarkably improved.

A computer-implemented method of designing a 3D modeled object representing a mechanical product. The 3D modeled object has a feature tree and an original value of a set of semantic parameters. The method includes by a user graphically interacting with the 3D representation graphically selecting a semantic point of an outer surface of the 3D modeled object and graphically selecting one or more target 3D positions of the semantic point. The method further includes, automatically, iteratively modifying the value of the set of semantic parameters. Thereby the method obtains an updated value of the set of semantic parameters. The method further includes, automatically by the CAD system, updating the 3D representation of the 3D modeled object based on the updated value of the set of semantic parameters. This provides an improved solution for updating 3D modeled objects based on graphical interactions.

A robot joint component rapid splicing structure comprises a first joint connecting base and a second joint connecting base, two inclined bayonet platform parts are arranged on the upper side of the first joint connecting base, long-strip-shaped clamping inclined faces A are arranged on the opposite sides of the two inclined bayonet platform parts, and the long-strip-shaped clamping inclined faces A are obliquely arranged in the length direction and the width direction; an inclined clamping block platform part is arranged on the lower side of the second joint connecting base, long-strip-shaped clamping inclined faces B are arranged on the two opposite sides of the inclined clamping block platform part and matched with the long-strip-shaped clamping inclined faces A. Two stable limiting side platform faces are further arranged on the two sides of the inclined clamping block platform part. The two stable limiting side platform surfaces are tightly attached to the upper surfaces of the two inclined bayonet platform parts; a pulling locking device is further arranged between the first joint connecting base and the second joint connecting base. According to the utility model, the structure is simple and convenient to splice, convenient to disassemble, assemble, maintain and expand, and high in connection strength and stability, so that the overall performance and reliability of mechanical products are improved.

The present application relates to the technical field of assembly task allocation, and discloses a mechanical product assembly task allocation method and system, which are used to solve the problems that when mechanical product assembly task allocation is performed, multiple available schemes exist, the optimal scheme cannot be accurately selected, and the scheme cannot be adjusted in real time according to the change of the field state, and comprise the following steps: calculating and evaluating qualified task allocation scheme sets in all preliminary task allocation schemes, calculating a corresponding multi-dimensional normalized margin value for each qualified task allocation scheme in the qualified task allocation scheme sets, and selecting a final task allocation scheme; performing conflict detection on the final task allocation scheme, if there is a conflict, modifying the final task allocation scheme to obtain a final modified task allocation scheme; and if there is no conflict item, directly regarding the final task allocation scheme as the final modified task allocation scheme, thereby effectively improving the continuity and intelligence of the mechanical product assembly process.

A cutting insert (1), comprising: a first surface (3) having a corner (9) with a convex-curved shape in an outward direction and a first side (11) and a second side (13) extending each from the corner (9), a second surface (5) which is arranged on one of the sides opposite the first surface (3), and a third surface (7) arranged between the first surface (3) and the second surface (5), wherein an imaginary plane that is orthogonal to a central axis (O1) passing through a center point of the first surface (3) and a center point of the second surface (5), and is arranged between the first surface (3) and the second surface (5), is assumed to be the reference plane, the first surface (3) further has an inclined surface (17) which approaches the reference plane with increasing distance from the corner (9), the inclined surface (17) a first inclined surface (19) which is inclined at a first angle (θ1), a second inclined surface (21) which is arranged further away from the corner (9) than the first inclined surface (19) and is inclined at a second angle (θ2), and a third inclined surface (23) which is arranged further away from the corner (9) than the second inclined surface (21) and is inclined at a third angle (θ3), the first inclined surface (19) has a concave-curved shape in a cross-section orthogonal to an angle bisector (L1) of the corner (9), the second inclined surface (21) is a flat surface, and, in a cross-section that includes the angle bisector (L1) of the corner (9) and is orthogonal to the reference plane, the second angle (θ2) is smaller than the first angle (θ1) and the third angle (θ3), wherein in a top view of the first surface (3) a length (L32) of the third inclined surface (23) in a direction orthogonal to the angle bisector (L1) of the corner (9) is greater than a length (L22) of the second inclined surface (21) in the direction orthogonal to the angle bisector (L1) of the corner (9).

The invention belongs to the technical field of computer vision, and discloses a three-dimensional point cloud registration method based on point-line feature fusion, and the method comprises the steps: firstly completing the three-dimensional point cloud static registration of the surface of a target object through SAC-IA; establishing an initial motion transformation relationship between the three-dimensional point cloud of the 3D model of the target object and the three-dimensional point cloud of the surface of the target object; then, in a dynamic tracking stage, point features extracted through ORB are matched with line segment features extracted through LSD-LBD, coarse registration is achieved in combination with an EPnPL algorithm, mismatching is eliminated through RANSAC, and the robustness of pose estimation is improved; and finally, further optimizing pose estimation by adopting point-to-surface ICP (Inductively Coupled Plasma) in a fine registration stage. The method does not need to depend on manual identification, can complete stable three-dimensional point cloud registration completely based on natural features, and can be widely applied to complex scenes such as mechanical product maintenance and industrial assembly.

The application belongs to the technical field of computer vision, and discloses a three-dimensional point cloud registration method based on point-line feature fusion. The three-dimensional point cloud registration method firstly uses SAC-IA to complete static registration of three-dimensional point clouds on the surface of a target object, and establishes an initial motion transformation relationship from the three-dimensional point clouds of the 3D model of the target object to the three-dimensional point clouds on the surface of the target object. Then, in the dynamic tracking stage, point features extracted by ORB are matched with line segment features extracted by LSD-LBD, coarse registration is realized by combining an EPnPL algorithm, and the robustness of pose estimation is improved by eliminating false matching through RANSAC. Finally, in the fine registration stage, point-to-plane ICP is used to further optimize pose estimation. The method does not need to rely on artificial marking, and can complete stable three-dimensional point cloud registration based on natural features, and can be widely applied to complex scenes such as mechanical product maintenance and industrial assembly.

The utility model relates to the technical field of production and processing of mechanical products, in particular to a heat dissipation placing rack for mechanical castings. According to the technical scheme, the device comprises a main body supporting, placing and stabilizing seat, a conical main body supporting and connecting column is arranged in the center of the upper end of the main body supporting, placing and stabilizing seat, and a first cylindrical placing matching seat and a second cylindrical placing matching seat are sequentially arranged at the upper end of the main body supporting and connecting column; the first placement matching seat is of an inclined structure inclining towards the upper right portion, the second placement matching seat is of an inclined structure inclining towards the upper left portion, and a spherical placement positioning guide matching column is arranged at the top of the main body supporting connecting column. The mechanical product conveying device has the advantages that machined mechanical products can be stably placed in a matched mode in the using process, rapid heat dissipation and cooling are achieved in the conveying process, the matching stability of the placing positions is better, the placing matching operation is more convenient in the overall using process, and it can be guaranteed that the machining cost of the mechanical products is lower in the producing and machining process.

The utility model relates to the technical field of mechanical parts, in particular to a double-shaft matched limiting combined part. According to the technical scheme, the device comprises a main body matching installation base made of stainless steel materials, and the front face of the main body matching installation base is provided with an arc-shaped first matching limiting connection groove with an upward opening. A fastening avoiding matching groove is formed in the position where the upper end of the main body matching mounting base intersects with the first matching limiting connecting groove, and a main body ventilation safety groove completely penetrating through the lower end of the whole body is formed in the center of the fastening avoiding matching groove; a cylindrical second combined connecting column with the center axis in the front-back direction is arranged on the front face of the main body matching installation base. The utility model has the advantages that the installation is more flexible and convenient, various mechanical products can be matched for use, the main body structure is provided with the ventilation structure, the reliable heat resistance of the main body structure in use is ensured, and the service life is longer in use.

The utility model belongs to the technical field of mechanical product correction tools, and particularly relates to a rapid correction tool which comprises a workbench used for supporting a mechanical product and a plurality of correction assemblies detachably connected to the workbench. The workbench is provided with a plurality of connecting grooves used for being connected with the correcting assemblies. The correction assembly comprises a correction block, a positioning rod transversely and adjustably arranged on the correction block in a penetrating mode and a positioning block arranged at the bottom of the correction block. The positioning block is inserted into the connecting groove to achieve detachable connection between the correcting assembly and the workbench. The positioning tool is used for solving the technical problem that the production efficiency of the mechanical products is low due to the lack of positioning tools suitable for the mechanical products with different shapes and sizes at present.

The application relates to the field of mechanical product structure design and manufacturing, and provides a hexahedral mesh model generation method, CAE software, equipment and medium, which selects candidate cutting surfaces to form a candidate cutting surface set based on geometric data of a geometric model in the CAE software; each candidate cutting surface of the candidate cutting surface set is evaluated; the geometric model is cut according to an evaluation result and based on a preset rule, a swept volume set of the geometric model is obtained, and a hexahedral mesh model of the geometric model is generated according to the swept volume set. The application can automatically evaluate the candidate cutting surfaces in the CAE software, and automatically select the evaluated candidate cutting surfaces for cutting the geometric model. The automatic evaluation and selection of the cutting surfaces improve the efficiency of geometric model cutting and hexahedral mesh generation, reduce the time cost of CAE software simulation pretreatment, improve the simulation efficiency of the mesh model in the CAE, and thus reduce the mechanical product production time cost.

To solve the problem that a clamper is inclined and an insert cannot be accurately fixed.SOLUTION: The cutting tool includes a holder, an insert, a clamp member, and a fixing member. The holder has a bar shape and includes a front end surface, a pocket, a first side surface, a first hole, and a second hole. The clamp member includes a main body and a protrusion. The fixing member includes a shaft portion, a first head portion, and a second head portion. The second head portion is attachable to and detachable from the shaft portion.SELECTED DRAWING: Figure 2