The Study Of 3D Soft Profile Simulation System For The Plasma Spraying Of Special Screw

In the thesis, the method of soft profile modeling process of plasma spraying ceramic screw has been developed. In the method, the pitch of screws is used as profile modeling parameter to achieve numerical control sprayer's move. Based on the method, the controlling programs and techniques have been carried out in the thesis. It is significant that the research can promote the spraying efficiency of the ceramic screw.Based on the coding theory of the NC procedure and the characteristic of the NC software's structure, a simple and efficient spring emulation system was developed by using Visual C++ software environment and the O-O technology. This system achieves the computer simulation of NC spraying process; can check the correctness of the spray process and decrease the times of pre-spraying and increase the spring efficiency. As an open and visual 3-D emulation system, this system can also be used in other NC simulation system.In the thesis, the translating of NC codes has been carried out based on the NC characteristics of the codes. For improving the quality of graphics, the display problem of dynamic manufacture process with three-dimension graphics, that is the display algorithm based on the real model of the work piece and sprayer, was discussed in the thesis. By means of a typical screw, the spraying process was simulated in C++ and OpenGL software environments. The result verified the research achievement above.For analyzing the displacement precision, an envelope surface simulation algorithm was used to research the influence of the sprayer fixed height on the machining process of spraying. Here, the concept of compensation of phase angle error was introduced and the normal error after phase compensation was used as a reference data of fixed height precision of the sprayer.