Papers by Keyword: Virtual Prototyping Technology

Abstract: This paper presents the structure and work principle of hydraulic die forging hammer. The mathematic model is established based on momentum theorem which is used to confirm the forging energy and blow number of times. At the same time,it offered the theories reference for the precision control of the run process. The speed, displacement and kinetic energy variety of hammer head were simulated. This research provided the foundation of further controllable and flexible for the forging energy and times.

Abstract: The key factors of NC gear shaper working steadily are directly influenced by the mechanical properties of reduction gearbox of NC gear shaper .The reasons of the reduction gearbox of NC gear shaper producing vibration have been studied in condition of unstable load when it works based on ADAMS . The speed of shafts and the meshing force of gears are obtained from the dynamic simulation analysis by the virtual prototyping technology . It shows that the reduction gearbox of strength of the vibration increases from input shaft to output shaft and the vibration strength which reduction gearbox works in the unstable input speed is greater than that in unstable load torque.

Abstract: This paper primarily focuses on kinematics analysis of a vehicle front suspension system in ADAMS. A specific simulation platform for a front suspension is established based on the virtual prototyping software of MSC.ADAMS. Then the kinematics simulation is done following the analysis of the rationality and defect of change. The simulation results show that the analysis provides a reference for improving the performance of the suspension.

Abstract: Crank-slider type cluster wells pumping unit is a new generation of energy efficient pumping unit whose structure is simple and it is safe to use. Crank torque is one of the key factors affecting the efficiency and efficiency of the pumping unit, which is closely related to its structural parameters. Using ADAMS mechanical system dynamics simulation software to build a virtual prototype of the slider-crank cluster wells pumping unit, taking which as a basis, carried out virtual test aiming to the length of the crank and connecting rod, which was two factors affecting the crank torque. The result of the study has a guiding significance to the structural design and optimization of slider-crank cluster wells pumping unit.

Abstract: Based on the virtual prototyping technology, the involute helical gears of a common single-stage reducer are taken as the research object, the friction dynamic model is established using ADAMS. Considering the influence of the contact friction during the gear meshing process, the simulation analysis is realized. The simulation analysis results are basically in conformity with that of the theoretic calculation. The variations of the relative sliding velocity, the friction coefficient and the friction force during the meshing process are researched, and the relationship between the relative sliding velocity and the friction coefficient is studied. The results show that the friction dynamics research on the involute helical gear meshing can be resolved by Virtual Prototyping Technology, which can provide a new method to study the tribological properties of the gear meshing. The method has a good prospect in practical engineering application.

Abstract: Our country has abundant coal resources, thin seam can reserves 20% of all can be occupied. But , with adverse circumstances, thin coal seam mining has not yet been fully realized automation. Plough is a kind of mining equipment with shallow-frustum, Low mining height, multi circulation.Its simple structure in thin coal seam mining is a unique advantage. Along with the plough development to high-powered, high speed to dig, automation direction, and with its reliable performance problems appear more prominent, it is badly in need of further research and discussion. In order to improve the reliability of plough, expand the scope of use plough, this paper applied the method of virtual prototype of the plough structure strength analysis. Taking a coal company designed BT plough as project object, the joint simulation environment is been established by Pro/E,ANSYS and ADAMS.by using corresponding modal interface technology. At last rigid-flexible coupled model has been formed in ADAM.

Abstract: The method to precise control the motion of basic virtual prototyping technology (VPT) is put forward in this paper. The hydraulic die forging hammer structure, work principle, and the VPT design idea are introduced. The parametric solid parts model and entire assembly model are all designed based on solidworks software. The dynamic state simulation process of hammer is carried on. The result indicated that the dynamic process parameter of hammer was gained. The dynamic state working process of hydraulic die forging hammer is precisely controlled, which provides the foundation to further realize the numerical controlled and flexible of hydraulic die forging hammer.

Abstract: Compression device is the important mechanism of baler. This paper uses the virtual prototyping technology. It analyzes the function of compression device in 9KG-350 high density baler and the three-dimensional digital model of compression device is obtained based on UG package .Then the model is put into ADAMS, and a kinematical simulation analysis is performed. Through the simulation, the whole kinematical process is reflected, gaining the relative kinematical curves of compression device as well. The results can be help in study the design of baler and the structure optimization.

Abstract: This article does research on 4MSC-3000 cotton picker transmission system thorough. It establishes transmission system dynamics model and vibration differential equation, ADAMS virtual prototyping technology is used to do simulation on the transmission system. Kinematics relations and dynamic characteristics of the transmission system are found out. Through the dynamic analysis of the model to solve, we can get kinetic curve of gearbox, each axis, gears and so on. Then provide the necessary theoretical basis for follow-up prototype design.

Abstract: Hydraulic excavator is a typical and complicated engineering machine by combination of mechanical, control and hydraulic system. It is very important for coupling analysis by use of multiple simulation tools. Hydraulic excavator mechanical model was constructed based on Pro/E 4.0. Virtual prototype of hydraulic excavator was finished by use of ADAMS interface function and carried on a lot of kinematics and dynamics simulation analysis. Hydraulic cylinder circuit was derivated based on ADAMS/Hydraulics. Working principle of bucket arm hydraulic cylinder was analyzed. Mechanical and hydraulic simulation of bucket rod hydraulic cylinder was finished. Bucket rod hydraulic cylinder velocity was obtained. Simulation results show coupling simulations have certain theory value and practical significance. They can provide evidence for trial and optimization of physical prototype.