Papers by Keyword: CAD System

Abstract: The article is focused on stress analysis in PTC Creo CAD System Simulation. There is provided a methodology for evaluating the results of these analyzes and attention of the pitfalls in their evaluation in the article. The presented methodology is explained in a simple example of beam loaded by force in the middle. In the example will present the procedure how to properly evaluate the results and how to solve problems. The aplications ot the methodoly willbe presented in expamles ot twou project.

Abstract: The paper presents the conception of integration of a robot virtual model with its virtual control system. The system of connections between the virtual world and the control system of a virtual model, proposed in the work, should let for developing the technical approach allowing teaching the manual programming of robots. In the paper attempted to define particular subsystems included in the proposed system for teaching programming of robots. In the work it have been distinguished problems that should be solved in order to properly create the proposed virtual system, and namely problems related to the: creation of a robotic system model in CAD systems, including modelling of a robot and its technological equipment; modelling of functioning of a real system in the applications of the VR (Virtual Reality) class; creation of a robot control system basing on a high level programming language (control application); elaboration of a virtual robot control panel (hardware interface); determination of the appropriate stereoscopic projection system and creation of the interfaces between the particular subsystems.

Abstract: The motion cycle chart of cam mechanisms of ATC was designed, the contour surface equation of globoidal indexing cam and the roller center trajectory equation of plane groove cam were established. Based on the idea of modular design and the SolidWorks, a CAD system of cam mechanisms of ATC was developed by using SolidWorks API and VC++ 6.0. Then the assembly model was built under the circumstance of SolidWorks directly. Meanwhile, the movement of cam mechanisms was simulated so that the reasonableness of the design was verified.

Abstract: . When transporting the large and medium-sized stamping parts on automatic stamping production line, robotic end picking-up device (tooling) needs reasonable clamping positions to ensure smooth precision transmission and safe production. Based on UG platform, this paper has used the secondary development technique to develop a stamping process CAD system on automatic production line for robot manipulation with UG/Open API functions in Visual c++ 6.0 environment, the system can quickly analyze the stamping process and the clamping positions for robots and generate a three-dimensional entity mould, which effectively shorten the production line product development cycle, improve the quality and production efficiency of stamping parts.

Abstract: With globoidal indexing cam mechanism as the object of study, this paper introduces its operating principle, analyzes and calculates its main motion parameters. On the basis of theoretical study, the paper using structured program design method and Visual Basic 6.0 as developing tool analyzes main function modules, such as system parameters input, law of motion, kinematics analysis and pressure angle check, etc. The paper develops globoidal indexing cam mechanism CAD system in simple operation and describes application method of the system and design examples.

Abstract: To avoid the precision decrease of the machining data transferred from CAD to rapid prototyping (RP) system, key techniques of driving RP machine within CAD system were researched. The method of achieving the layers contour scanning data within CAD system was researched; then, the direct driving mode of RP machine was established; finally, tests were conducted on a polystyrene foam cutter machine with example of layer generation. Tests show that the approximate processing to CAD model can be avoided between CAD and RP, and RP machine can be driven and controlled within CAD system.

Abstract: The blade is a complex mechanical structure model which has two processing methods. One is making mold blade using the electrochemical methods and forming the blade molding using precision casting methods. But the cycle of this processing method is long and the process is complex and difficult to control. The second method is cutting the blade directly. The cutting force and the friction between tools and blanks can affect the machining accuracy of the machining. We should timely adjust the cutting parameters and cooling model to improve processing accuracy.

Abstract: The environment of application for overhead crane CAD system has been satisfactory. The fitting hardware and software system should be used, the appropriate development style and usage model should be taken, and the emphases should be put on the development of programming. That’s the most important thing the crane plants should do.

Abstract: The project and techniques of driving rapid prototyping (RP) machine within CAD system were researched to avoid the precision decreasement of the data transfer from CAD to RP system. The method of achieving the layer’s contour scanning data within CAD system was researched; then, the data transfer model of direct integration of CAD and RP was established; finally, tests were conducted on a polystyrene foam cutter machine with example of layer generation. Tests show that the approximate processing to 3D CAD model can be avoided during data transfer between CAD and RP, and RP machine can be driven and controlled within CAD system.

Abstract: This paper develops a set of tri-cone bit CAD system based on UG platform relying on using parametric design idea; studies the systematic structure and development principle of the cone bit CAD system; molds the cone, tooth and tooth slot by using the basic theory of parametric design and feature modeling corresponding to the example, and realizes the assembly of cone and tooth and virtual assembly of three cones. This system interface is simple, intuitive, easy to operate, and has good human-computer interaction and scalability and portability. This paper provides a research base for the developing a more perfect tri-cone bit CAD system on UG.