Xue Jun Wang

Study on Elevator Drive System Dynamics Simulation of Rail Transport Conveyer

Rail transport conveyer is special transportation equipment that is widely used in the field of metallurgical industry. It is the key to ensure equipment operation efficiency on a production site. But the low lift system efficiency and poor reliability are difficult technical problems in the enterprise. In this case, rail transport conveyer uses the worm gear and screw nut lifting mechanism. The project carries on rail vehicle lifting system modeling and dynamic simulation study through Solid Edge ST5 and ADAMS, combined with simulation technology, virtual prototype design. Research purpose is in order to match the coefficient of friction between the screw and screw nut better, and to match different speed ratio for the drive gear pair and the lifting mechanism being in empty back to travel and work schedule. Another aim is to match the speed of the lifting speed and walking speed, and to reduce the error probability. Results show that the motor can get better speed matching relation with lifting mechanism through research, further optimizing the structure of lifting system parameters. Through the analysis and structure optimization, we can improve the reliability of rail transport vehicle lift system, and implement efficient fast for copper anode lifting and positioning precision. The ultimate goal is to achieve vertical hanging in electrolytic cell anode plate, and to make electrolytic operation to achieve the best state.

Study on Assembly Design Approach Based on Synchronous Modeling Technology

With the increase demand for product diversity, the best way is to shorten design cycle of product and improve design efficiency. This paper presents an assembly design method of product by means of the use of Solid Edge ST4 3D synchronous modeling technology. In this paper, an industrial manipulator was studied as an example, which was used to account for the design process of assembly design based on synchronous technology and the characteristic of this design method. In the process of design, intelligent assembly technology, top-down assembly technology and synchronous assembly technology are combined with the design of industrial manipulator. The results show that this assembly design method is more convenience to modify design model, can greatly improve design efficiency and accuracy and reduce the iterative design process of similar model, thus greatly improve the product quality.

Research on RFID Technology in Tool Changing of the NC System

In order to avoid the problem of tool destroyed and machine damaged because the NC (numerical control) system appeares tool identification error in the tool changing process, in the paper, the author constructed a based on RFID(radio frequency identification) technology tool changing model of the numerical control system. It can improve the tools high reliability recognition, shorten tool changing process time and reduce the failure rate. it can realize RFID equipment and tool management information system integration that the tag sticked in the tool of the NC system is regarded as information identification basis. The author analyzes automatic tool changing process based on RFID, constructs the system hardware platform and designs software.

Study on the Standardized Design of Belt Conveyor Based on Synchronous Technology

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.

Discrete Element Method Analysis of Mechanical Properties of Railway Ballast during Tamping Process under Different Vibration Frequency

Railway ballast tamping operations is an important work in the line maintenance and repair operations, the selection of tamping parameter is usually dependent on field trials and practical experience, for lack of theoretical basis. This paper creates discrete element analysis model of railway ballast using the discrete element method, the numerical simulations are carried out to study the mechanical properties of railway ballast during tamping process. We focus on the influence of vibration frequency during tamping process; an optimal vibration frequency of the simulation analysis is obtained and compared with the recommended vibration frequency of Plasser & Theurer Company, it is found that the two vibration frequencies accord. This result verifies the correct validity of the discrete element analysis model of railway ballast during tamping process.

The Research of Industrial Robots Design Based on Synchronous Technology

Industrial robots are widely applied in all kinds of automatic production line. It is the most important members in the family of robots. To improve the product quality and the precision of the robots, in addition to control strictly the production techniques and monitor its manufacturing process, the most important is to improve the design level and the design efficiency. In this paper, a new type of automatic four degrees of freedom industrial robots will be studied by using Solid Edge ST4 3 d synchronous modeling technology. In the process of design, synchronous modeling, parallel design, cooperative modeling technique and Top-down Assembly Modeling technology are combined with during the design. The whole product modeling design has included module and subsystem, has accomplished chassis module, and turn arm module and grab module design. The key point in this paper is that synchronous modeling technology is used in the three dimensional modeling the design application, and shows that the technology in different modules and the union between different designers. The results show that all the technical application above can improve the design efficiency, reduce design error and design iterative process, thus greatly improve the product quality and production efficiency

Research on Kinematics Simulation of Turning Conveyor Based on ADAMS

With industrial technology developed, belt conveyor is very important that improve industrial production. Conveyor belt can avoid slippage, run deviation, and in turn. Belt conveyor conveys material fast and improves the efficiency. For realizing flat belt conveyor turning, this article complete plane conveyor to create 3 d model using Solid edge V20, and use dynamic analysis software ADAMS kinematics simulation of plane conveyor virtual prototype. Through a series of parameters setting and correction, we get analysis data and compare simulation results with the theoretical design results. Desired results show that the turning conveyor conveying speed is 0.6 m/s, turning radius is 1500 mm delivery targets within the scope of design to achieve the desired effect. Conveying material: smoke box (length x width x height, mm) 580 x 460 x 460, single weighing 25 kg. Thus, the technologies reduce design errors, shorten the product development cycle, and reduce development costs of new products. So that it improves production manufacture efficiency and product quality for the enterprise.

Study on Kinematics Simulation of Multi-Joint Robotic Gripper Based on ADAMS

The article describes how we can use the virtual prototyping technology validate mechanism design of multi-joint manipulator and its grabbing performance and loading abilities per minute. It completes the three-dimensional model of virtual prototype with Solid Edge ST5, and be imported into ADAMS software. And then the manipulator kinematics simulation is carried out in ADAMS. Using the kinematics simulation technology of ADAMS, we can get the various joints in a working cycle of the displacement characteristic curve, the velocity and acceleration curves of working conditions. This paper introduces how to establish the geometric model of articulated robot virtual prototype model. And some key technology details such as adding a constraint to model are also described. Kinematics simulation analysis of the manipulator with ADAMS software can greatly shorten the design cycle, improve design accuracy and reduce the cost of product development.

Study on the Cyclic Loading Effects to the Railway Ballast

When ballast materials are subjected to cyclic loading, as a result, the change of particles micromechanical properties will lead to ballast degradation, permanent deformations on the railways step by step. In this paper, it presented a coupling discrete particle-flow simulation model of the railway ballast for cyclic tamping loading. Tamping frequency changes from 25HZ to 60HZ in numerical simulation process. Simulation results that the ballast compaction rate increases linearly with frequency up to a characteristic frequency 35HZ and then it declines in inverse proportion to tamping frequency. The aim of this paper is to study on the effects on the railway ballast under cyclic loading. The study shows that the discrete element method is a valid method for investigation of the microscopic properties of railway ballast now, while we have no other better research method.

Design of Belt Conveyor Based on Dual Mode Modeling Approach of CAXA

This paper proposes a dual-mode modeling technology based on software- Computer Aided X Alliance (CAXA), and verifies the method with a belt conveyor as an example. The purpose of dual-mode modeling technology integrating innovation design pattern and engineering design pattern is to achieve a fusion between open design and accuracy design technology. Dual-mode modeling approach breaks single thought constraint owned by traditional parametric modeling, which has a strict relationship like father and son between part elements. By means of design example, this paper described the help that unique three-dimensional sphere functions only owned by CAXA give the solid modeling. This paper took belt conveyor for an example, introduced dual-mode modeling process and verified this approach. Combined with the help of the idea of modular design, this paper has accomplished assembly design of the driving motor module, roller device module and transmission device module. The results show that the design speed under the condition of dual-mode modeling can improve more than one time compared with the traditional methods, design error is greatly reduced and design efficiency is also greatly advanced.