561 results about "Mechanical products" patented technology

The present invention provides a single component implementing highly precise pulse detection for rotational or liner position detecting apparatuses for jog dials and mechanical products. Focusing on the fact that the phase difference between the magnetic fields in circumferential and radial directions generated by a magnetized ring is precisely 90 degrees, a position detecting apparatus of the present invention includes two Hall elements placed at a distance; a protective film provided on magnetic sensitive portions of the two Hall elements to cover the magnetic sensitive portions; a thin-film magnetic plate placed on the protective film to cover the magnetic sensitive portions of the two Hall elements; and further a processing circuit calculating the sum and difference of the signals from the two Hall elements to generate signals having an accurate phase difference of 90 degrees. The position detecting apparatus can therefore detect the rotation direction and precise rotation angle.

The invention relates to a mechanical product assembly stand which comprises a stand body, wherein an adjusting platform is arranged at one end of the upper part of the stand body; a roll clamping device is arranged on the adjusting platform; a self-enclasping device is arranged at the other end of the stand body; the self enclasping device comprises an installing shell; a first cambered enclasping claw and a second cambered enclasping claw which are used for enclasping a workpiece are oppositely articulated at two sides of the installing shell; a supporting rod for supporting the workpiece is arranged vertically in a sliding way between the two cambered enclasping claws on the installing shell; the first cambered enclasping claw and the second cambered enclasping claw are respectively connected with the supporting rod through articulated connecting rods in a transmission way; and the supporting rod and the cambered enclasping claws form a plane connecting rod structure which converts the vertical movement of the supporting rod into the opposite opening and closing swinging movement of the cambered enclasping claws through the articulated connecting rods. In the invention, because the first cambered enclasping claw and the second cambered enclasping claw are respectively connected with the supporting rod through the articulated connecting rods in a transmission way, after the workpiece is put on the supporting rod, the supporting rod moves downwards under the action of gravity and acts on the two cambered enclasping claws through the connecting rods, and the two cambered enclasping claws enclasp the workpiece.

The invention discloses a human-machine interactive assembly process planning system of the manufacturing field. In the system, an assembly data preprocessing module establishes a corresponding collision detection model corresponding to a CAD geometric model of each part, designates an assembly constraint element, and establishes an assembly relation tree; a virtual assembly simulation module extracts data required by the virtual assembly to establish a virtual assembly simulation scene; an assembly auxiliary analysis module achieves dynamic playback of an assembly procedure, statically displays an assembly track of the part, and computes a distance between the models; an assembly process generation module acquires assembly procedure data from a virtual assembly database, generates an assembly process by reference to entries of a standard assembly process in the database, and divides service positions; an assembly process evaluation module reads an assembly operation action and operation object data, computes the efficiency of the assembly procedure to obtain ergonomic analysis data; and a virtual assembly data management module executes a data maintenance task. The assembly process planning system achieves dynamic assembly and process planning functions of mechanical products in a virtual environment.

The invention discloses a real-time material distribution method in a mechanical product assembling process, which is characterized in that: according to the production plan on the same day, calculating to obtain all required parts; by considering the storage capability, the existing amount, the material lead time and the product cycle time of each part on each station, calculating a material distribution scheme; distributing the parts in time on small batches according to the obtained distribution scheme; simultaneously, tracking the on-site production situation by an MES system in real time; recording manufacturing product situation and the material consumption situation of each station; and timely feeding back production plan information and station inventory information. The method of the invention can realize on-time material distribution, feeds back and adjusts the distribution scheme in time according to real-time working condition, can improve production efficiency and lowers product cost.

The invention belongs to the technical field of mechanical product design, and relates to a convenient bagging garbage can and a using method thereof, in particular to a convenient bagging garbage can widely applicable to public places and outdoor or household use. The convenient bagging garbage can is characterized in that a process of convenient bagging of the garbage can is realized mainly through a connecting rod combination mechanism, a spring contact block mechanism, a gear rack and the like, and a series of problems of insanitation in bag taking, trouble in bag tearing, difficulty in bagging and the like in the garbage can bagging process are solved. Compared with an existing automatic bagging garbage can, the convenient bagging garbage can is simpler and more ingenious in used mechanisms, high in space utilization rate, more convenient in bagging process, high in bagging success rate and widely applicable to public places and outdoor or household use.

The invention discloses low-alloy wear-resistant steel and a manufacturing method thereof. The low-alloy wear-resistant steel comprises the following components in percentage by weight: 0.13-0.50 percent of C, 0.10-0.50 percent of Si, 0.30-1.50 percent of Mn, 0.125-0.40 percent of V, 0.05-0.30 percent of Mo, less than 0.020 percent of P, less than 0.010 percent of S and the balance of Fe and inevitable impurities. The low-alloy wear-resistant steel has the advantages of low cost, series strength, excellent low-temperature toughness and low welding carbon equivalent weight, and can be widely applied to mechanical products with high requirements on strength and wear resistance in engineering, ore mining, buildings, cement production, ports, electric power, metallurgy and the like.

The invention discloses a method for obtaining irregular knowledge used for constructing a mechanical product design knowledge base. Aiming at the requirements for knowledge processing and knowledge base system development in the mechanical product design field, the invention defines the irregular knowledge, discloses a computation module for dividing irregular knowledge granularity by adopting granularity calculation principle, studies mechanical product design irregular knowledge base structure system and basic format, discloses an irregular knowledge base display method based on metadata, and invents a method for obtaining semantic matching, irregular knowledge base in serial data source, and multi-mode irregular knowledge based on irregular example knowledge obtaining of cluster analysis; and on the basis, designs a system frame and a prototype software system for mechanical product design knowledge base system construction and application. The invention can be used to solve the technical problem of treating irregular knowledge in an information processing system such as CAD (computer-aided design), CAM (computer-aided manufacturing), CAE (computer-aided engineering) or PDM (products data management) in manufacturing industry, so as to satisfy the requirements for the deepening development of the manufacturing industry information project technology.

The present invention discloses a mechanical product design two-dimensional knowledge pushing method based on design intents. The mechanical product design two-dimensional knowledge pushing method mainly comprises: establishing a mechanical product design intent database, establishing a design intent acquisition and decomposition method, constructing a design intent attribute table by a rough set theory and performing reduction to obtain the simplest design intent set; establishing a mechanical product design knowledge ontology database; and calculating similarity degrees between intent elements and a compared knowledge ontology in a sequential traversing manner by using an improved similarity degree matching algorithm based on a knowledge ontology concept semantic distance and a concept attribute, sequentially carrying out matching on each intent element, of which the similarity degree is greater than a threshold value, in an intent element set from large to small according to the similarity degrees until completing all the matching, and completing matching of the knowledge ontologies by utilizing a text semantic similarity degree calculating method. The mechanical product design two-dimensional knowledge pushing method can solve the problem of low knowledge intelligent degree of knowledge pushing in the mechanical product design, can improve efficiency of mechanical product design and is suitable for the requirement of the manufacturing information engineering technology for deepening development.

The invention discloses a mechanical product assembly workshop material calling and dispensing management system and method based on an MES system. The system comprises a planning module, a material management module, an andon calling calculating module and a visualization monitoring module. By employing the planning module and the material management module as configuration prerequisites, the andon calling calculating module generates a production line assembly station material calling request according to concrete steps, including calling for the required quantity of material kind and response; meanwhile, the retrieval of materials on that day is connected in real time with tracking assembly station material calling so as to perform better material management. The management system and method can timely and accurately generate material dispensing demands according to real production processes, and perform effective warehouse management on that day so as to create more scientific and effective material dispensing management environment, and to increase an enterprise material dispensing management level.

The invention discloses an apparatus and a process for destructive distillation and cracking of biomass, belonging to the technical field of industrial processing apparatus structures and processes for mechanical products. The apparatus comprises an input part, a reaction vessel part, a control part and a processing output part. Self-balancing of energy in the process of production is realized through utilization of the destructive distillation and cracking process for biological garbage. According to the invention, the destructive distillation and cracking process for biomass has the advantages of short process flow, little equipment and low energy consumption, and the apparatus has the advantages of safe and convenient operation, easy maintenance and repair, etc.

The invention discloses a device which is applied to medical mechanical products for precision surgeries and minimally invasive surgeries and the like and other occasions requiring to realize two compound motion modes (macroscopic motion and fine motion adjustment). The device is composed of a working space adjusting mechanism, a 3-DOF (degree of freedom) fine motion mechanism and a 3-translational-motion parallel mechanism, and can realize the motion output of a 3PUU (three-prismatic-universal-universal) mechanism and a 3UPU (three-universal-prismatic- universal) mechanism. A rack (1) of a main body part and a movable operator platform (22) are connected by three branch chains. The structures of the branch chains are exactly same, in case of taking one branch chain for example, from the rack (1), the branch chain connects a spherical swinging block I (3), a sliding channel I (6), a slide block I (9), a hooke hinge I (13), a linear driver I (16), a hooke hinge IV (19) and the movable operator platform (22) together, thereby realizing the function of the whole device. In the process of realizing the motion output of a 3-DOF parallel mechanism, the linear driver I(16), a linear driver II (17) and a linear driver III (18) are the driving devices of the mechanism, and the linear drive-mode input is realized in a hydraulic or ball-screw mode; in the process of realizing the motion output of the 3-DOF fine motion mechanism, the slide block I (9), a slide block II (10) and a slide block II (11) are the driving devices of the mechanism, and the linear drive-mode input is realized in a ball-screw mode; and in the process of realizing the function of the working space adjusting mechanism, an adjusting nut (23) is the driving device of the mechanism, and the rotary drive-mode input is realized through a servo motor.

The invention discloses a loading force direction self-balanced loading device and a force direction self-controlled numerical control knife rest static rigidity test platform, belonging to the field of test of basic performance parameters of functional parts of numerical control machine tools. The loading device is fixedly arranged on a test bed rack, and the loading force direction is always perpendicular to a cutter bar by virtue of self-balance of a ball pair and does not deviate; single-point centralized loading of the force is realized, and the accuracy of the loading position is guaranteed; according to the test device, the ground is taken as the reference, a designed cutter head bearing plate is selected as a measuring point, the measuring point and the load point are positioned on the same vertical line, and the test error caused by deformation of other functional parts of the machine tool is overcome. The device and the test scheme have the greatest advantages that the accuracy of the direction and position of the loading force is guaranteed. The loading device also can be applied to the static rigidity test of other functional parts of the machine tool and other mechanical products.

The invention relates to a method for quickly designing mechanical products based on virtual instruments and reverse engineering. The method comprises the following steps of: acquiring the point cloud data through a prototype product model at first, obtaining a prototype product curved surface model through utilizing an imageware software according to the obtained point cloud data, utilizing CATIA software to form a prototype product solid model of the curved surface model, using a parametrization design to obtain a new product solid model, analyzing and computing the new model through utilizing ANSYS software so as to obtain a new product model which satisfies requirements, and finally, storing the model into a database and quickly forming through a quick forming machine. The method consists of a prototype product model data acquiring part, a data processing, analyzing and managing part with a computation and analysis software and a quick forming part. The data acquiring part is an optical measuring instrument, data measurement and acquisition can be realized through scanning, and the point cloud data of the model can be obtained.

The invention relates to a tolerance unified modeling method for a mechanical product, which adopts technologies of graph theory, vectors and characteristics, etc., and implements part tolerance element modeling, part tolerance modeling, assembly fit tolerance modeling and assembly body tolerance modeling layer by layer from bottom to top according to an assembly decomposition structure of the product, thereby realizing the unified modeling of product tolerances. The tolerance unified modeling method of the invention is characterized in that: the part tolerance element model is firstly established; each part tolerance element modeling built by extended directed graphs is adopted, and all the part tolerance element modeling are adopted to establish the part tolerance element models by a summation operation of the extended directed graphs; and each assembly fit tolerance modeling built by the extended directed graphs is adopted to establish a produc tolerance unified modeling. The tolerance unified modeling method for the mechanical product has the advantages of realizing the unified modeling of a dimension tolerance, a shape tolerance, a position tolerance and an assembly matching tolerance of the mechanical product. First, the diversity and the ambiguity of the tolerance models are eliminated; second, an assembly dimension chain and error accumulation analysis can be established conveniently.

The invention provides a management system of numerical control machining tool typical parts of complex parts of an airplane and a method. The system comprises a semantics model defining module facing to the three-dimensional parameterization of the typical parts, a typical parts storeroom management module and a semantics model explaining module. The method comprises the processes of defining, memorizing and explaining the semantics model. The invention can effectively manage the parts type and the assembled parts type typical parts of the numerical control machining tool of the complex parts of the airplane, provides support to quickly design the numerical control machining tool, and can be popularized and applied to the design field of the other mechanical products.

The invention provides an involute cylindrical gear system transmission accuracy reliability determining and controlling method and belongs to the technical field of mechanical product design. According to the national standard, the involute cylindrical gear system transmission accuracy reliability determining and controlling method can help an enterprise to forecast failure probability of a gear system and make a reasonable improved plan to improve product reliability through detection of original errors of the gear system and analysis and control of transmission accuracy reliability of an involute cylindrical gear system, thereby saving cost and preventing resource waste and failure occurrence.

The invention relates to a water-based coating for the surface of a mechanical product and belongs to the technical field of painting. The coating comprises a water-based primer coat layer and a water-based top coat layer, the water-based primer coat used in the water-based primer coat layer comprises the following components in percentage by mass: 30-40% of epoxy-ester emulsion, 10-15% of pigment, 10-15% of environment-protecting anti-rust pigment, 15-20% of filler, 3-4% of assistant and 13-22% of de-ionized water; the water-based top coat used in the water-based top coat layer comprises the following components in percentage by mass: 55-65% of hydroxyl acrylic emulsion, 4-25% of pigment, 5-15% of filler, 2.5-3.5% of assistant and 10.5-12.6% of de-ionized water. The coating product is water-based and environment-friendly, has very high drying speed and high gloss of the top coat, also has excellent chemical property and excellent weather resistance, and the corrosion resistance of the coating in combination with the primer coat and the top coat is more than 2000h.

The invention discloses a radiating paint, and a preparation method and an application of the radiating paint. The radiating paint comprises the following components: nano alloy powder, polyvinyl butyral, organic solvent, and cross linking agent. The invention further discloses a preparation method of the radiating paint, and an application of the radiating paint in reducing temperature of electronic products and/or mechanical products, and components of the electronic and/or mechanical products. The radiating paint has high radiance; and within the temperature range from 0 EDG C to 200 DEG C, the emissivity of wavelength of 1micro m is 0.91-0.95, and the emissivity of wavelength of 8micro m-14micro m is 0.92-0.98. The coefficient of heat conductivity of the radiating coat is 143W/m. DEG C, so the paint has excellent heat conducting property. According to the radiation application effect tests, the radiating effect of the radiators is greatly enhanced by the radiating paint, so the electronic products or components of the products are prevented from each danger caused by the excess temperature.