Research And Implementation Of Solid-based Simulation System Of Noncircular Surface Grinding

With the wide application of computer technology in manufacturing, numerical control(NC) machining simulation technique, which is an important component of Computer-Aided Design(CAD) and Computer-Aided Manufacturing(CAM), has been the key approach to shorten production cycle and improve production efficiency. Under the support of JiangSu province key scientific and technological project, this dissertation does research on NC code preprocess and solid-based verification simulation in noncircular surface NC grinding.First, the paper researches the format and semantic features of ISO APT in detail, next, applies regular expression to describe the definition of APT's tokens and uses context-free grammar to describe APT's syntax rules, last, designs the intermediate code format which keeps on the source code semantic and designs a complete module to check lexical and syntax errors of NC code by using modern compiling techniques. On the other side, based on research on noncircular surface grinding features, this deissertation designs the data structure of simulation driver, then, applies interpolation theory to design the grinding motion simulation module and researches all sorts of cases on constructing the solid swept of grinding wheels in the process of noncircular surfaces grinding, finally, designs NC codes verification simulation module by using Design Model-Based Verification technique.According to all researches above and practical application, a noncircular surface grinding simulation system, which carries out NC code preprocess and verification simulation, has been developed on the basis of ACIS and HOOPS platform.