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Considering the importance of the reasonable injection molding technology.Based on the application of moldflow in injection molding of the helmet .By adjusting the mold temperature, melt temperature, injection time, packing pressure, hold time and so on the injection molding process parameters to develop appropriate technology methods to get the best injection molding parameters.

The fundamental principle of three dimensional Element-free Galerkin has been briefly investigated in this paper, and built forming mode of steel ball cold forging, Element-free Galerkin method successfully applied to the simulation analysis of steel ball cold forging forming process in the LS-DYNA simulation software. In comparison to Finite Element Method and experiment data, Proved Element-free Galerkin method was feasible in metal plastic forming process, and in the large deformation simulation was more accurate than the finite element method, Element-free Galerkin method has more obvious advantages after altering the impact factors.

With the development of mechanical industry, more and more standard parts have been used in all kinds of large assembly process. The same kinds but different types of standard parts are used, making it boring and difficult to build standard parts. Therefore, this article describes a rapid modeling method of standard parts Based on UG Part Families and Excel database. According to the concrete examples, the procedures for establishing the standard parts library were presented. The method is simple and practical, no secondary development is needed and the design efficiency is increased.

CBN cutting tool is used to cut hardened GCr15 bearing steel. Based on the surface roughness under different cutting parameters, people built the prediction model of surface roughness by Linear Regression algorithm, and carried on the significance test of it, the results show that the surface roughness forecast model set up by linear regression algorithm has a certain reliability and its linear regression equation is significant; among the cutting parameters, cutting speed and feed rate make great impact to the surface roughness and back engagement of the cutting edge has little impact to the surface roughness of test specimen.

Belt conveyor is widely used in a variety of automated production lines and bulk material transportation is one of the most important applications. In order to improve the accuracy of the belt conveyors, it is need not only to strictly control the production crafts, more importantly, to improve the rationality of the structure and design level. Running deviation and adjusting deviation problem are important issues to be considered in a belt conveyor design process. In this study, the 3D synchronous technology of Solid Edge ST4 will be applied in the design of the belt conveyor to design a new type of anti-deviation structure. In the design process, we combine the synchronous technology with modular technology and top-down assembly modeling techniques to confirm the subject and adjust deviation. The key is the application of synchronous technology in 3D design and the new structure in Running Deviation and Adjusting Deviation. It turned out that the application of above technology can reduce design errors and avoids the repeated design, thus greatly improving the efficiency of the engineer's design. Meanwhile, the study of running deviation can make the structure of adjusting deviation come true.

Belt conveyor is widely used in all kinds of automatic production line and bulk material delivery is its important applications. In order to improve the operation accuracy of the belt conveyor, in addition to strictly control the production process, tracking the manufacturing process, the most important thing is to improve the design level and design efficiency. The research used Solid Edge ST4 three-dimensional synchronous modeling technology to complete 3 d model design of belt conveyer, at the same time for the standardization of belt conveyor design research. Standardized design uses synchronous modeling, modular design technology, top-down assembly modeling technology complete standardization process from scheme design to detail design. According to the structure characteristics of belt conveyor, the integral reasonable structure is divided into several modules, modules are related by key parameters. When you modify the parameters related to realize the automatic modification of model of the structure, the standardization of product design is promoted. Research focuses on synchronous modeling technology in three dimensional modeling design and application of a belt conveyor design standardization implementation, validating the fusion of synchronous modeling technology in different design module. Through the module assembly process, within the scope of certain and realize module exchange, so as to realize the belt conveyor series, universal design. To realize the standardization of structure design can reduce repeated design and design errors, thus greatly improve the engineer design efficiency.

This paper established a model of mechanical arm of hot extruding and upsetting machine. According to design requirements of mechanical arm of hot upsetting extruding machine, established the 3D model of parts and the parts assembly by using 3D modeling software SolidWorks. This design realizes cyclical movement of mechanical arm that 120° level rotation and up-downswing 15° by incomplete gear mechanism and cam mechanism, and verified the feasibility of designing the project by SolidWorks.

Established the 3D model of the automatic feeding punch mechanism in SolidWorks and imported it into ADAMS to make dynamic simulation. Kinetic curves of the actuating mechanism were measured. These curves show the cooperation between the pressing mechanism and the feeding mechanism is well. The transmission angle and working length were measured. Calculated the coefficient of travel speed variation is 1.77 and the required power is 1.7KW. Finally, choose the type Y100L1-4(2.2KW) motor in the given resistance. The results show the mechanism can fulfill the anticipative design requirements and successfully verify the feasibility of the design project.

Take a automobile bumper for example, analysis of effect of process parameters on warpage of a automobile bumper, including melt temperature, injection time, cooling time and packing pressure, on the warpage of the automobile bumper were analyzed by means of Moldflow software. The results show the warpage decrease of the increase of the injection time, the cooling time and the packing pressure, but when the packing pressure reached 45MPa, the warpage slightly increased; the melt temperature should be picked out by the characteristics of the plastics material.

A mechanical arm of hot extruding and upsetting machine 3D model was established by using SolidWorks and imported into ADAMS. The mechanical arm was simulated in ADAMS and the simulation results showed that the model of mechanical arm could meet all the design requirements well, and the kinematics simulation results could offer the references to design the mechanical arm of hot extruding and upsetting machine.

Established the model of automatic feed punching mechanism by using 3D modeling software SolidWorks, we finished the 3D model of parts and parts assembly according to the design automatic feed punching mechanism’s requirements. This design based on the double-crank seven-bar mechanism as pressing mechanism and cam mechanism as feeding mechanism, completed the combination of pressing mechanism and feeding mechanism and the automation of the mechanism.

Established the model of multifunctional office chair for fitness, using 3D modeling software Solidworks, finished the 3D model of parts and parts assembly according to the design requirements of multifunctional office chair, visually and efficientlly. Importantly, this chair is the combination of fitness and massage function. So it is practical and cnvenient to the office crowd.

Variations in high pressure common rail (HPCR) system characteristic parameters influence injection characteristics and lead to fluctuation of fuel injection quantity (FIQ). The fuel injection quantity fluctuation (FIQF) has adverse affects both on coherence and stability of HPCR system. Numerical simulation model of HPCR has been developed and its accuracy has been validated by experimental results. Influence law and generation mechanism of FIQF caused by variations of different parameters such as fuel return pressure, solenoid reset force, control valve lift, fuel return orifice (A orifice) diameter, fuel inlet orifice (Z orifice) diameter, injector needle lift, needle pre-tightening force and injector flow coefficient in entire operating conditions have been analyzed.

Contact force is a complicated force in practical problem. By using the powerful function of ADAMS in dynamics analysis, we can solve it in a comparatively accurate way. Since a number of parameters are involved in the simulation in ADAMS, the initialization of them has a great influence on the simulation. Aiming at the contact force between wheels of wheel chair and ground, the value of the parameters was calculated and analyzed in this paper. The main research object in this paper is the parameter of the ADAMS/Solver. The result of the dynamics simulation is also used to test whether the parameters are defined properly or not. With this method, we find a better way to define the parameters in ADAMS.

Established the model of dual-purpose move-assistant device of wheelchair and crutch, using 3D modeling software SolidWorks, finished the 3D model of parts and parts assembly according to the design requirements of dual-purpose move-assistant device of wheelchair and crutch. Verified the accuracy of designing the project. With the software to carry on a 3D model design can save work time and economize the design budget, providing the theoretical feasibility of realizing the dual-purpose move-assistant device of wheelchair and crutch.

Experimental study on surface finish of high speed mill of hardened 45 steel was carried out with PCBN tool. Cutting parameters studied include different cutting depth, cutting speed and feeding speed. Surface finish after cutting were measured and compared with that of grinding. Experimental results showed that for high speed milling of hardened 45 steel, the surface finish can be very fine, different cutting parameters all have explicit effect on surface finish.

The influence of negative chamfers of PCBN milling cutters on cutting process of high speed cutting is studied based on finite element analysis. The milling speed, axial cutting depth and feed speed are all set fixed, while the negative chamfer angle varies. Cutting tool stress, deformation force, and cutting temperature are obtained for cutting process under different negative chamfering Angle,thus providing basis for the selection of tool parameters in practical production.

This paper establishes the finite element model of main spindle in the test rig for high-speed railway bearing. Utilizing the finite element analysis software ANSYS, the modal analysis for spindle is carried on. Preliminary determination is that spindle resonance occurs. Structural optimization is carried out by increasing first natural frequency and reducing weight of main spindle in order to avoid resonance. The results showed that the position of support bearings is determined. The first natural frequency is increased by reducing spindle weight. The dynamic performance of the spindle is improved, avoiding the resonance region effectively.

In order to find optimal cutting parameters of carbon steel C45, the optimizing experiment of the cutting parameters in High-Speed Machining based on Taguchi method is presented in this paper. High-Speed milling experiments were designed with high-speed machining tool and surface roughness tester as the equipment. The cutting speed, the feed per tooth and the cutting depth were selected as the cutting parameters while the surface roughness was taken as the criterion. The mean surface roughness and SNR of every factor at different levels was obtained. The effects of these parameters on the surface roughness have been researched by means of the analysis of variance, and then the optimal cutting parameters were found.

With the rapid development of society, the demand for steel production is increasing, and the demand of the bar’s quality is getting higher and higher. However, what is constraining the production efficiency of the Bar industry is that the development of NDT of surface crack on the bar is unpleasant. This paper presents a new NDT method which is machine vision-based and fully automatic, and designs an application system which is more viable and practical. The bar non-destructive crack detection system use the Industrial Control Computer as Master Parts. Combine with the CCD image acquisition and the PLC control of the pipeline as a whole. This system utilizes Testing Technology of Fluorescent Magnetic particle, realize machine recognition through the Digital Image Processing Technology. What’s more, this system use the set method of adaptive threshold based on probability of detection and false alarm probability in machine recognition. It has a significant and Practical significance for reducing the computation of the system, improving the processing speed of this system, and meeting the needs of the entire system in real-time requirements.

A new type of pastry slicer which could alter pastry thickness expediently was designed by using SolidWorks and ADAMS. In the first place, the pastry slicer 3D model was established by SolidWorks and imported into ADAMS by the nicer interface between SolidWorks and ADAMS. In the second place, the pastry slicer 3D model was simulated in ADAMS. The dynamics simulation result showed that the pastry slicer could fulfil the anticipative design requirements. The simulation analysis results could be regard as the design reference for the new type of pastry slicer, and the virtual prototype could be used to do a deeper analysis according to different requirements.

This paper introduced a project of reinforced concrete chimney with a height of 90 meters, which does not stop construction at nearly 200 degree Celsius, increased the height of the chimney with 10 meters. Reasonable structural measures were promoted to ensure the normal pouring of concrete chimneys. Compared with the normal condition, this measure is economical, low investment, feasible, etc. It provides far-reaching significance that increasing the height of the reinforced concrete chimney at the high temperature state.

As the core equipment of the metallurgy, cement, chemical production enterprises, the mechanics status analysis of rotary kiln cylinder is paid close attention on engineering site because of its frequent damage and expensive maintenance cost. With two supporting the lime rotary kiln was studied in the paper, the cylinder shell, kiln lining and materials were looked as a whole system, the cylinder and kiln lining were modeled with lamination and partition, the various factors to stress of the kiln cylinder were researched, such as the cylinder axial thickness, the cylinder axial materials and materials in it, the finite element software ANSYS was used to analyze the structure stress and thermal stress distribution status of cylinder, the analysis results are helpful for the design and optimization of rotary kiln cylinder.

The representation method of rolling bearings knowledge and general structure of knowledge base system are put forward by researching on the knowledge characteristics of rolling bearings fields. A knowledge base system of rolling bearings that is propitious to the knowledge’s acquirement, abstraction, storage, share, application and innovation is built by combining with the technology of knowledge based engineering and expert system, which provides support for intelligent design of rolling bearings.

Metallurgical industry factory building is usually high. Under the action of wind load and horizontal crane force, large moment will be induced at the column base. That is to say, the moment acting on the foundation is large. The embedded depth is relatively deep and the size of factory building foundation is relatively big. In the case of foundations based on the natural rock, if the routine design code adopted, the high capacity of the rock can not be fully utilized. The use of bolt at the bottom surface of the foundation integrates the foundation and the natural rock, hence reduces the foundation size and embedded depth to save the investment.

Laser Surface Texturing (LST) is an advanced method of surface micro-texturing technology. The aim of this paper is to investigate the influence of laser surface texturing distribution patterns on lubricant characteristics for laser texturing surfaces against cylindrical under conditions of film lubrication. The laser texturing surfaces are processed with power levels under YAG laser. Under conditions of constant depth and area coverage ratio of LST,patterns of the texture distribution and the sliding orientation relative to the texture were systematically varied. The experimental results suggested that 20° circumferential interval can increase the load-carrying ability of lubricating film.