70results about How to "Shorten the trial production cycle" patented technology

The invention discloses a forming method for a banjo axle housing. The forming method includes the following steps of (S1) blanking, (S2) extrusion of a shaft head, (S3) square pushing, (S4) manufacturing of a process groove, (S5) heating of a workpiece, (S6) radial expansion, (S7) shaping and (S8) upward resetting of a lower press sliding block and taking-out of the workpiece. According to the (S6), a wedge punch penetrates through a central hole of the lower press sliding block, pushes two radial expansion core molds to expand the radial direction of a workpiece central hole and axially squeezes the workpiece synchronously. According to the (S7), two axial shaping core molds are attached, the lower press sliding block moves downwards to enable the axial shaping core molds to be inserted into the position between two radial shaping core molds, an upper press sliding block moves downwards, and the wedge punch is inserted into the position between the two axial shaping core molds to shape the workpiece central hole and axially squeeze a hydraulic cylinder for axial limitation. The forming method integrates heat expansion and shaping, work procedures are reduced, a process chain is shortened, and the outline size accuracy is obviously improved.

The invention discloses a manufacturing process of an intermediate casting of a diesel engine. The manufacturing process is characterized by comprising the following basic steps of: designing the manufacturing process; manufacturing a die; assembling the die; smelting; pouring; opening a box; shaking out; shoveling sand; cutting a feed head; supplementing; coarsely cleaning; spraying; performing shot blasting; performing hogging machining; performing comprehensive MT and UT; remedying defects; thermally processing; spraying; performing shot blasting; roughly machining; inspecting by classification society; and finally inspecting. According to the manufacturing process, PROCAST casting process simulating die software is utilized to perform simulated calculation, the casting process can be optimized based on the simulation result, and thus the inner quality of the casting can meet the technical requirement; and the smelting process, welding process, thermal processing process, formulation of rough processing process, research and development of an inspection route, and other works are accomplished.

The invention belongs to the field of precision casting, and particularly relates to a design method of an internal baffle for a directional solidification blade casting system. The internal baffle is designed in the manner of combining a casting test and ProCAST software simulation analysis, the grow state of a grain structure is virtualized through a CAFE module, and the part subjected to distortion in the growth direction without a baffle blade structure is predicted. Then, a temperature field is analyzed, pre-judgment is carried out on the influence of the internal baffle on the shape of the front edge of solid liquid, the relation between the inclination angle and the diameter of the baffle is measured to determine the size of the baffle, and finally whether the blade grain growth orientation and grain size meet production standards or not is preliminarily evaluated. The casting system is designed, a large number of trial-manufacture expenses can be saved, test sequences are clearer, and the activity of technicians in design of the internal baffle of the directional solidification blade casting system is fully brought into play.

The invention discloses a shrinkage factor design method of a precision casting die for multiple-guide vane groups. According to the shrinkage factor design method, a shrinkage factor is finally set by assuming parameters, assuming shrinkage directions and selecting the magnitude of the shrinkage factor; when a wax pattern die is designed and manufactured, corresponding shrinkage factors are set in three directions L, D and R (refer to the assumed shrinkage directions) greatly different in size, and therefore, the out-of-tolerance problem of the channel area of the casting of a multiple-guide vane group due to the adoption of one single shrinkage factor is solved. The shrinkage factor design method of the precision casting die is suitable for all the multiple-guide vane groups. Offset angles delta alpha 1 and delta alpha 2 are obtained by use of a computing method, and therefore, the out-of-tolerance problem of the channel area is solved, and the design concept and the design method are reasonable. The die is designed and manufactured in one step so that the product development cost is greatly reduced and the product trial production period is shortened. The shrinkage factor design method of the precision casting die for the multiple-guide vane groups can be popularized in engineering application.

The invention relates to machining of high-pressure compressor blisks, in particular to a compensation method for blisk blade profile reverse deformation. The compensation method comprises the following steps that influence of the finish-milling process, the polishing process, the vibration-polishing process and the shot blasting process on blisk blade profile parameters is analyzed, and the change law of the blade profile parameters is obtained; and then reverse deformation compensation is conducted on the blisk blade profile according to the change law of the blade profile parameters, wherein the reverse deformation compensation process comprises the following sub-steps that a finish-milling procedure machining model is corrected firstly, an blisk is machined through a symmetrical milling method according to the corrected digital model secondly, and finally, a polishing procedure, a vibration-polishing procedure and a shot blasting procedure are sequentially conducted. According to the compensation method different from conventional single-procedure deformation control, the four continuous working procedures are integrated by means of deformation coupling characteristics of the different working procedures in a technological system, deformation control in the four working procedures are compounded and overlaid to be converted into the single working procedure of computer numerical control finish-milling, and the final delivery quality of products is improved.

The invention provides a digitally-simulated casting method. The method comprises the following steps: (1) firstly, manufacturing a three-dimensional model of a casting piece by using cartographic software; then introducing the three-dimensional model of the casting piece into casting simulation software to carry out simulated casting; finding out a position on which the casting piece has a defect under the condition that a casting head is not arranged, so as to directly represent a defect position and a defect size; then placing the corresponding casting head and a chilling block on the a three-dimensional model in the casting simulation software to carry out simulated casting again; repeating until the obtained simulated casting piece has no defects; (2) placing the casting head and the chilling block and carrying out actual casting, wherein the size and the position of the casting head and the size and the position of the chilling block are the sizes and the positions of the step (1) when the simulated casting piece without the defect is obtained. According to the digitally-simulated casting method, the trial-manufacturing period of the casting piece can be shortened and the wastes are reduced.

For a defect in the prior art that the milling deformation control on complex integral structural components is overly dependent on artificial experiences, the invention discloses a follow-up forecast method for the milling deformation of complex integral structural components. The method is implemented through carrying out feature modeling on the integral structural component through an analysis technology of deformation in machining (CAE); completing structure analysis and machining simulation by virtue of a finite element technology; then importing analysis and simulation results into a deformation decision support module (DMSS), so that the analysis on deformation data is completed in the module; and finally, providing forecast information for technicians. The method solves the dependence of the milling deformation forecast of complex integral structural components on artificial experiences, has a real-time property, a dynamic property and reliability, reduces the production cost, shortens the trial production and production cycles of products, and improves the production efficiency.

The invention discloses a contactor attraction time qualification rate predicting method based on Monte Carlo simulation, belongs to the technical field of contactor detection and solves the problem of high cost in designing and testing and long designing cycle caused by the fact that samples are needed to be processed and manufactured in a method for testing attraction time parameters in an existing contact designing process. The method includes determining designing values and upper and lower limits of three parameters having influences on attraction time according to a contactor designing file and generating N groups of parameter combinations by adopting an independent identically distributed central limit theorem and utilizing MATLAB; acquiring N groups of attraction time characteristic parameters according to the N groups of parameter combinations; acquiring distribution characteristics of the attraction time parameters; acquiring a contactor attraction time qualification rate of a contactor by utilizing a Simpson law according to the distribution characteristics and attraction time designing parameters of a contactor. The contactor attraction time qualification rate predicting method based on Monte Carlo simulation is suitable for predicating and analyzing the qualification rate of contactor attraction time in a designing link of the contactor so as to provide a basis for a designer of the contactor to correct designing parameters.

The invention provides a style-changed vehicle model vehicle body structure design method based on the trunk door model change. The method includes the following steps that engineering constraint and technological constraint are provided and used for constraining the trunk door model change of a style-changed vehicle model, wherein the engineering constraint comprises the total arrangement requirement identical to that of an original body in white, the vehicle body structure main section requirement identical to that of the original body in white and the trunk door performance requirement after the model is changed, and the technological constraint comprises satisfaction of the stamping and welding technological requirements for vehicle model collineation; whether the engineering constraint and the technological constraint meet the common condition of the original body in white or not is judged; if the engineering constraint and the technological constraint meet the common condition of the original body in white, a first draft of the trunk door model of the style-changed vehicle model is designed and generated; whether it can be guaranteed that the first draft of the trunk door model can be commonly used by the original body in white or not is judged; and if it can be guaranteed that the first draft of the trunk door model can be commonly used by the original body in white, the trunk door model is designed and verified in detail, and the vehicle body structure is developed synchronously.

The purpose of the invention is to provide a cushion block for matching of an automobile door cover. The cushion block is simple in manufacturing and exquisite in structure, can simultaneously meet quantifiable adjustment of fining assembling and adjusting, verifying and data collecting of flatness of an engine cover. The cushion block for matching of the automobile door cover is composed of a base and a body. The bottom surface of the body and the top surface of the base are provided with mutually-matched spiral ladders. The body is supported on the base through the spiral ladders. During using, the cushion block is placed on the lower portion of the automobile door cover, the base is fixed, and by adjusting the relative angle of the base and the body, the spiral ladders of the body and the spiral ladders of the base can be overlapped at the different positions, thus the height of the body is adjusted, and the purpose of adjusting the flatness of the automobile door cover by simulating the thread pitch is achieved. The precision of height adjusting relies on precision of the spiral ladders, and the spiral ladders cannot make contact with the automobile door cover, therefore abrasion of the automobile door cover is less, and even if the top surface of the body is subjected to certain abrasion, the precision of adjusting cannot be affected.

The invention relates to the field of auto pillow production lines, in particular to an auto pillow foaming experiment line which is characterized by comprising a two-component high-pressure foaming machine of a foaming material, a manipulator for adjusting a filling position, a foaming die set for shaping the foaming material, a safety device for safety protection, and an electric control system for controlling operation of the experiment line, wherein the safety device is arranged around the manipulator and the foaming die set; the electric control system is arranged on one side of the safety device; the two-component high-pressure foaming machine comprises a raw material barrel, a feeding pump, a raw material tank, a metering unit, a connecting pipeline, a mixing head control valve bank and a mixing head sequentially connected; the manipulator comprises a base arranged on the ground and a manipulator arm arranged on the base; and the foaming die set comprises a die set support, a die set, a die-sinking and die-assembling air cylinder and a foaming die. The auto pillow foaming experiment line can shorten the trial production period of new products of an auto pillow and reduces the cost.

The invention discloses an application method of straight gear tooth rack cutter CAD (computer-aided design) drafting system. The method includes: establishing a cutter CAD system based on a UG (Unigraphics) platform, and inputting various three-dimension parameters of a straight tooth rack cutter to generate a three-dimensional solid model. Three-dimension parametric technology is analyzed and summarized, and automatic generation of rack cutter three-dimensional models and two-dimensional CAD images, and automatic labeling of the size are achieved by the parametric technology and UG secondary development technology. The problem that calculation in the rack cutter design process is complex and errs easily is solved. Design precision increasing, product design cycle shortening, design cost reduction and design error avoidance are achieved. The application method is applicable to design technology for straight tooth rack cutters special for Swiss MAAG rack cutting machines used to machine gears by generating method.

The invention provides an equipment debugging management and control method and device, electronic equipment and a readable storage medium. The method comprises the following steps: acquiring controldata pre-transmitted to to-be-debugged physical equipment; according to the control parameters in the control data, based on the corresponding relation between the identification information of the components in a three-dimensional model and the identification information in the control data, controlling a target component, corresponding to the first identification, in the three-dimensional modelto execute set operation, and obtaining an operation result after the set operation is executed; and according to the operation result, determining a debugging result for debugging the three-dimensional model, and when the operation result is not in a specified threshold range corresponding to the target component, obtaining a debugging result representing that debugging is unqualified. Accordingto the scheme, the three-dimensional model is subjected to simulation debugging by utilizing the control data pre-transmitted to the entity equipment to be debugged, and the entity debugging is converted into the simulation debugging, so that the accuracy and reliability of the simulation debugging are improved, the trial-manufacture period is shortened, and the debugging cost is reduced.

The invention discloses a railway vehicle in-built side-window frame rounded-corner forming process. The railway vehicle in-built side-window frame rounded-corner forming process only includes the steps of material preparing, plate rolling, flanging, trimming and linear cutting and slicing. The intermediate annealing process in conventional stretch forming is avoided, technology difficulty is greatly lowered, operability is high, fewer and simple dies are used, one die can be used not only as a flanging die but also as a vehicle fixture of the trimming process, the number of the dies is decreased, cost is lowered, and trial production circle of products is greatly shortened; by produced railway vehicle in-built side-window sash rounded parts, scratching brought by possible pulling cracks and stretching in the stretch forming process is avoided, the quality of forming surfaces and the like is high, utilization of materials is high and can reach 85% to 90%, production cost can be decreased by 88.35%, the forming process is suitable for the small batch, multi-product and fast-spaced production mode of rounded parts, and is good in application prospect.

The invention relates to a pipe bulging method and die based on volume expansion force and belongs to the technical field of the production technology of auto spare parts. The pipe bulging method comprises the following steps: filling water in a sealed pipe, cooling to freeze the water, and expanding the pipe into a demanded shape under the guidance of the cavity of the die. With adoption of the pipe bulging method, the sealing requirement of equipment and the requirement of a high pressure liquid source to pipe expansion are lowered, the trial-manufacture period is shortened and the development cost is lowered.

The invention discloses a powder metallurgy mixed material formula modeling and control method based on multiple regression, which comprises the following steps of: preparing an iron-based or copper-based sintering material sample by analyzing a powder metallurgy process, carrying out an optimal selection test on a mixed material formula by adopting an orthogonal test method, and analyzing the influence of the element content of the mixed material on a product quality index; establishing a mathematical model related to the density, hardness and other quality indexes of a powder metallurgy mixed material and a product through a multiple regression analysis method, carrying out F inspection, t inspection, heteroscedasticity diagnosis and multi-collinearity diagnosis on the model, establishing an optimal model of a formula and the product quality indexes, and predicting the product quality indexes through the model; and obtaining the optimal formula of the product quality index through the model. Prediction of the product quality in the powder metallurgy machining process and intelligent optimization design of the material formula are achieved, and certain guiding significance is achieved for preparing the high-performance index, reducing the production cost, shortening the new product trial-manufacturing period and improving the production efficiency.

The present invention relates to a method for recommending a monochromatic fluorescent powder LED ratio and a dispensing amount based on the least square method, which comprises the following steps: color coordinates of monochromatic fluorescent powder are selected; the target color coordinates are calculated according to the color coordinates of monochromatic fluorescent powder; the conversion efficiency per unit volume of monochromatic fluorescent powder is calculated according to the target color coordinates; the volume of monochromatic fluorescent powder is calculated according to the target color coordinates and the conversion efficiency per unit volume of monochromatic fluorescent powder; the mass of monochromatic fluorescent powder is calculated according to the volume of monochromatic fluorescent powder; the mass ratio is calculated according to the mass of monochromatic fluorescent powder; and the dispensing amount is calculated according to the mass ratio. The method providedby the invention adopts the algorithm based on big data, when an enterprise user inputs the relevant material information and product information, the mass ratio of fluorescent powder can be recommended by the method, and the algorithm model can be optimized and iterated by continuously using the data; the method is beneficial to improving the accuracy of ratio, helps an engineer to shorten the cycle of sample and trial production, reduce the production cost and improve the production efficiency and yield.

The invention discloses a universal matrix flexible customized pre-batch prototype car trial-manufacture platform and method thereof. The trial-manufacture platform includes a first dimension, seconddimensions and an intelligent network connection system; the first dimension and the second dimensions are connected by the intelligent network connection system; the first dimension is used for installing and fixing a trial-manufacture vehicle body of a prototype car during trial production; the second dimensions are composed by various supports required for completing a trial production process,and are respectively disposed on both sides of the first dimension; the intelligent network connection system mobilizes the supports required for the trial production process in the second dimensionaccording to the corresponding trial production process to complete the corresponding trial production process. The trial-manufacture platform is composed of two dimensions, can adapt to the line cross requirements of different types of cars, has diversification, high degree of flexibility and versatility, shortens the prototype car trial-manufacture cycle, and reduces costs.