Papers by Keyword: Virtual Machining

Abstract: Analysis of the features of Mastercam, Solidworks and Vericut software and their respective advantages, Proposed by Solidworks, MastercamX and VERICUT three software are combined as the optimization platform to build the NC machining program integrated modeling, assembly, processing, simulation and Optimization in one. Author take rub a drum processing for an example, in the Solidworks modeling, assembly, in the Mastercam X programming and generate the NC program, through VERICUT for the simulation and optimization of NC program, Examples show the rationality of optimization, avoiding the collision, the production and processing of the interference, the over cut phenomenon, Three software effectively combined, play a very high efficiency, improve the using efficiency of NC machine tool, has the certain reference significance to the actual production.

Abstract: Logarithmic spiral bevel gear is the spiral bevel gear whose tooth line is logarithmic spiral line. It helixes angle along the direction of tooth length equal everywhere. Due to the high-tooth spiral bevel gear has significant advantages of high transmission stability, these gear are more widely used in our country, especially in the transport sector. But compared to general spiral bevel gear, its complexity space meshing theory leads that it is different to process. In order to ensure that machining process is reasonable and achievable, we show that how to create tools, geometry and procedures and calculate the tool path simulation based on Siemens UG CAM.

Abstract: The present paper work shows the efforts of the research group from University of Oradea on the introduction into the educational program at all the levels (bachelor, master and PhD) of the newest method of the machine tool study. By these methods is need to understand the educational stages ( engineering for constructive parts, the machining on CNC milling centre up to 5 axes simultaneous, machining of very complexes parts, the programming of the CNC units, the using of the most advanced CAM software, the programming of the robots into the flexible manufacturing cell, etc.). On the other hand we include here the research activity about the improvement of the performances of the entire flexible cell from University of Oradea laboratory by increasing of the technological experiences. It is necessary to mention that the UO-01 flexible manufacturing cell, based on the horizontal milling centre TMA-AL 550, both were developed by own efforts (retrofitting) at University of Oradea in our faculty (Faculty of Management and Technological Engineering) having the contribution of our research group. The entire concept of these new methods is based on virtual simulation into the 3D space of the functioning in real time of all the components at every technological case. For these targets all the components were modeled at 1:1 ratio in 3D space, including the movements of their movable parts.

Abstract: This paper designs the virtual online platform of high precision machinery processing. And we use it to forecast the safety coefficient k and lift coefficient of auto machining process, and based on the safety coefficient and the lift coefficient we improve the automobile working procedure real-time, and obtain a reasonable body safety structure and external driving performance of the structure, which achieves good comprehensive design effect. At the end of this paper, we apply the system in the online virtual platform of computer higher occupation education. According to the cycle mechanism of the lift coefficient, we design the teaching task of cultivating innovative talents, and arrange the teaching tasks of applied science. It provides the theory reference for research on the higher occupation school personnel training.

Abstract: With the help of the computer simulation technology, the virtual machining simulation system of NC machine tool was built based on the integrated simulation module of the UG NX software. Through setting the NC machine parameter of the virtual machining system, the machining process simulation of the typical parts in virtual environment was completed, which implements the collision and interference checking in the process of NC machining and verifies the correctness of NC programs. Finally, the simulation results prove that the assembly modeling method of virtual simulation system for the NC machining is feasible, and the simulation of machining process can effectively determine the mutual interference problem of the machining system, which lays the foundation for effectively preventing the collision accident.

Abstract: Because the multi-frame component has thin walls, variable wall thickness and a high reconciliation precision request, the design restrains are many, and the variable is big, the manufacture restrains must be considered in the design stage. In this study, a method called “house-building frame modeling” is introduced firstly, and the finite element model of the milling distortion analysis is established for the multi-frame components by the method, and the prediction analysis of the milling distortion under different milling conditions is carried out, by means of 3-D finite element simulation technology. Comparing the simulation results and the measurement ones of the milling distortion, the proposed model is modified; the modeling method and prediction method are proved to be effective. Software system is developed specially for the modeling and the distortion prediction for multi-frame part. By using of the software, a platform structure with 192 frames is analyzed and its milling distortion is predicted successfully. reference on the purpose of optimizing milling coefficient.

Abstract: Adopt software Proe 5.0 to create model and processing technology planning of integral impeller, This paper is to establish an NC processing plan integrated with modeling, programming, simulation and optimization, taking the integral impeller as an example and combining the CAM system of software Proe 5.0 and 5-axis simulation module Vericut7.15. By the above plan, the more proper NC processing method can be got, the processing technology will be improved, and processing cost will decrease. By this plan, users can prolong the service life of the cutter, improve the surface quality, shorten the production cycle and enhance the utilization rate and productivity of the lathe. establish detailed machining plan, perform 5-axis linkage CNC programming and generate NC program for integral impeller. Modify and optimize the error existed in the NC program generated by Proe 5.0 under Vericut 7.15 environment. Achieve virtual machining of impeller parts and provide method and basis for actual machining on machine by combination of Vericut 7.15 and Proe 5.0.

Abstract: In this paper, the concept, development status and trend of NC machining simulation technology were reviewed and its four key technologies were emphatically introduced, which were geometric modeling technology, NC code translation, entity collision detection and the material removal process simulation respectively.

Abstract: Based on the gear generation principle, taking the professional software as the tool, the problem of virtual hobbing simulation on involute helical gears was studied, and virtual hobbing simulation of hobbing on the whole gear was completed by using macros of CATIA V5. The validity of this method was validated through analyzing the tooth surface accuracy error of the model which was below 1µm between the virtual tooth surface and the theoretical tooth surface and the possible factors affected the tooth surface accuracy during manufacturing was also carried on the discussion. It offers a fictitious three-D platform for studying the principle of gear cutting machine's error as well as the finite element analysis between the ideal tooth surface and the erroneous tooth surface.

Abstract: As to spiral groove grinding, convertionally was based on envelope theory, a formed wheel was needed to be designed and manufactured, and then this wheel was used to grind the specified spiral groove. This paper tried to find the other way to manufacture the specified spiral groove with common disc wheel or dish wheels. A generic model for groove grinding is presented in this paper. With the model, the groove geometries can be calculated under certain grinding parameters. The relations between the grinding parameter and groove geometries were studied numreically. A test was done and the results proved the model is correct. This technology make the spiral groove virtual machining possible. The technology is also a real DFM (Design For Manufacture), because the design process for spiral groove is the process for selecting manufacure parameters.