12results about How to "Optimize geometry" patented technology

This invention provides a pre-rotating air inlet ring, a centrifugal fan, and a range hood, belonging to the field of kitchen appliance technology. The pre-rotating air inlet ring includes an outer fixed ring, an inner fixed ring, and multiple blades; the outer and inner fixed rings are concentric and coaxially arranged; multiple blades are distributed between the outer and inner fixed rings, with the inner end of each blade fixedly connected to the inner fixed ring and the outer end fixedly connected to the outer fixed ring; the extension direction of the blades forms an acute angle with the perpendicular line to the axis of the outer fixed ring, i.e., the pre-rotation angle; the annular area is divided into three fan-shaped areas with successively increasing pre-rotation angles (α1<α2<α3) and successively decreasing blade spacing angles (β1>β2>β3). This achieves differentiated and gradient guidance of the inlet airflow in the circumferential direction.

The utility model relates to the technical field of automobile covering part flanging processing, and discloses an automobile covering part side flanging rotating die, which solves the problems in the background technology, and is characterized in that the rear wall of a lower die holder is fixedly connected with a sliding seat, an air pressure driver is fixedly arranged on the sliding seat, and the telescopic end of the air pressure driver is fixedly connected with a gear box; the bottom of the gearbox is slidably connected with the sliding seat, a servo motor and a driving wheel are mounted in the gearbox, the output end of the servo motor is fixedly connected to the driving wheel, one side of the driving wheel is meshed with a first driven wheel, the other side of the driving wheel is meshed with a second driven wheel, and one side of the second driven wheel is meshed with a third driven wheel. The first driven wheel and the third driven wheel are fixedly connected with a pair of wheel discs respectively, flanging pieces are fixedly connected to the disc faces of the two wheel discs respectively, pre-flanging releases partial elastic deformation in advance, the springback amount after final flanging is obviously reduced, the geometrical shape of materials is optimized, and the follow-up forming process is more stable.

A laser cutting method for producing n trimmed sub-blanks from a master blank made of metallic material, where n is an integer strictly greater than 1, the laser cutting method comprising the following steps: - Op1 / Positioning the master blank on a cutting table, the cutting table comprising n strips arranged to move relative to each other in a transverse direction; - Op2 / Clamping at least a portion of the master blank to the cutting table; - Op3 / Cutting n undragged sub-blanks from the master blank in a longitudinal cutting direction using a laser source; - Op4 / Separating the n strips of the cutting table from each other in a transverse direction; - Op5 / Releasing the clamps; - Op6 / Clamping the n undragged sub-blanks to the n strips; - Op7 / Laser trimming the n undragged sub-blanks to form n trimmed sub-blanks; - Op8 / Releasing the clamps; - Op9 / Unloading the n trimmed sub-blanks from the cutting table.

The utility model discloses a pneumatic extinguisher impeller with novel three-dimensional structure blades, relates to the technical field of pneumatic extinguishers, and solves the problems that the original impeller blade configuration and volute structure cause certain loss of internal gas flow, the gas flow rate at an outlet is influenced, and the gas flow rate is influenced. The backpack type pneumatic extinguisher comprises an impeller body, arc-shaped blades are arranged in the impeller body, through holes are formed in the positions, between the blades, of the impeller body, the size parameters of the blades of the impeller are improved, and the size parameters comprise the size on the horizontal plane and the size perpendicular to the plane of the impeller; the geometric configuration of the impeller blade is improved, and the geometric parameters of the impeller blade and the volute are integrally optimized; the energy loss caused by gas flowing in the pneumatic extinguisher is improved, and the working efficiency of the impeller of the pneumatic extinguisher is improved.

The present application provides an evaluation method for cutting a crystal ingot. The evaluation method includes the following steps. A plurality of sampling points are set on a test piece of the crystal ingot. Then, a plurality of observation planes are set. Each observation plane is formed by at least two adjacent sampling points. After that, the average value of the measured values of the sampling points included in each observation plane is calculated. And the observation plane corresponding to the minimum average value is taken as the reference plane for cutting the crystal ingot.

The application discloses a kind of parameterized modeling-based optimization design method and system of centrifugal fan volute profile, belong to industrial centrifugal fan design field.The method includes: firstly, volute profile away from volute tongue side is constructed, determine the width of two circular arcs away from volute tongue side of volute;Second volute tongue profile parameterization constraint, define volute tongue opening degree β, volute tongue radius R, volute tongue center and impeller center distance D key parameter, volute tongue geometry is controlled by three parameters independently;Finally, profile fusion and optimization, adopt single circular arc to connect volute profile away from volute tongue side and volute tongue profile tangentially, avoid geometric over definition problem, complete overall modeling.By improving the degree of freedom of volute tongue area, effectively reduce the flow separation and impeller interference at volute tongue, optimize the uniformity of volute internal flow field.

The invention discloses an Ansys thermosetting coupling analysis method for a brake disc based on Spaceclaim, relates to the technical field of brake disc thermosetting coupling simulation, and aims at solving the problems that an existing racing car brake disc thermosetting coupling analysis method is complex in working condition, large in calculation amount and not easy to operate. The method is technically characterized by comprising the steps that firstly, a brake disc and friction plate model is established and imported into finite element analysis software Ansys, materials are selected for the brake disc and the friction plate, material attributes are input, and the step number and time are set; 2, boundary conditions are applied, force generated by braking is regarded as a linear process, and braking force is applied; step 3, repairing the distorted grid; 4, defining a contact surface as friction, a formula as a generalized Lagrangian method, updating rigidity as each iteration, and the rest as program control, setting a connection mode as geometry-ground, and a type as revolution; and 5, temperature distribution and deformation quantity are obtained through thermosetting coupling analysis.

The present application relates to the field of industrial internet, and provides a federated learning method and system for training of an industrial internet edge sensor device. The method comprises: distributing global model parameters and aggregated momentum to a selected subset of edge sensor devices, and initializing to obtain local model parameters and local momentum; dividing the local model parameters into multiple parameter blocks, performing momentum updating on the current batch gradient through a momentum accumulation algorithm to obtain a momentum matrix; performing orthogonalization processing on the momentum matrix through a Newton-Schulz iteration algorithm to obtain an orthogonalization matrix; performing momentum gradient alignment scoring on the multiple parameter blocks to obtain a smooth alignment score; performing weighted updating on the orthogonalization matrix to obtain updated parameter blocks; and aggregating the parameter block increments and the updated momentum by the server to obtain updated global model parameters and updated global aggregated momentum. The present application reduces the communication frequency and improves the training efficiency of the edge sensor device.

The utility model discloses a novel truss structure with node rings. The novel truss structure comprises an upper truss structure and a double-row column supporting structure, the upper truss structure comprises an upper chord member, a lower chord member, inclined legs, transverse pull rods, web members and node rings; the inclined legs are located between the upper chords and the lower chords, one ends of the inclined legs are connected to the joints of the lower chords and the stand columns, and the other ends of the inclined legs are connected to one fourth or three fourths of the upper chords on the same side; the upper end of the transverse pull rod is connected to the joint of the upper chord and the inclined leg, and the lower end of the transverse pull rod is connected to the middle top of the lower chord; the three node rings are respectively arranged at the joint points of the upper chord, the inclined legs, the transverse pull rods and the web members on the left side and the right side of the upper truss structure and the joint points of the transverse pull rods, the web members and the lower chord members in the middle of the upper truss structure in a surrounding manner. A traditional steel structure factory building beam is replaced by the novel truss with the node ring, and the problems that a traditional beam is insufficient in bearing capacity and large in deformation can be effectively solved.

The application discloses a method for manufacturing photovoltaic BC cells by using inkjet printing hot melt ink, which comprises the following steps: step 1, silicon wafer pretreatment; step 2, hot melt ink preparation; step 3, inkjet printing equipment debugging; step 4, P area mask manufacturing; step 5, etching back process for manufacturing P area; step 6, removing P area mask; step 7, N area mask manufacturing; step 8, etching back process for manufacturing N area; step 9, high-temperature activation and doping optimization; and step 10, subsequent processing. The method can overcome the problems of complex process, high cost and poor mask stability in the prior art, and achieve the goals of simplifying the process, reducing the cost, improving the cell performance and production efficiency.

The invention belongs to the technical field of electro-catalytic materials, and particularly relates to a transition metal-based heterojunction nano array electrode material and a preparation method and application thereof. The transition metal-based heterojunction nano array electrode material provided by the invention is prepared by three steps: firstly, placing a current collector in a mixed solution of transition metal salt and an organic ligand for reaction to obtain a metal-organic ligand precursor array material; then, the precursor array material is placed in a solution containing oxometallate to be treated; and finally, carrying out high-temperature gas-solid reaction with a selenium / tellurium source. The material can be used as an electro-catalytic material, shows excellent catalytic activity and stability in sulfide oxidation reaction (SOR), and provides an efficient and green solution for sulfur-containing wastewater treatment.

The present application relates to the technical field of turbine blade profile, and discloses a turbine blade geometric parameter optimization method and device and electronic equipment, the method comprises: obtaining the geometric parameter of target turbine blade and the preset parameter of preset turbine blade model;According to the geometric parameter of target turbine, the target blade model of target turbine is generated;According to the geometric parameter of target turbine blade, the target parameter of target blade model and the preset parameter of turbine blade model, the deviation optimization function between the target blade model of target turbine and the preset turbine blade model is generated;According to the deviation optimization function, the geometric parameter of target turbine blade is optimized.The present application does not need manual adjustment of the geometric parameter of turbine blade, but through the deviation optimization function, the geometric parameter of target turbine blade is automatically optimized, and then the geometric parameter of turbine blade is efficiently and accurately optimized.