Papers by Author: W.T. Li

Abstract: UG Open/Grip and Open/API hybrid programming approach allows accurate modeling of copy milling cutters, avoiding modeling in the software caused by inefficient and poor accuracy flaws. This paper uses all parameters design of UG-based hybrid programming, forming a series of three-dimensional entity of copy milling cutters rapidly by modifying the basic parameters of the copy milling cutters, which can greatly improve the design efficiency of a series copy milling cutters.

Abstract: . Large automobile cover die with complex characteristics and high hardness after quenching is mainly applied hard milling. In processing, large tool vibration, short cutting-life and much time-consuming increase the die manufacturing cost. In this paper, the relationships of cutting speed with achining efficiency and thickness with tool life are considered in the optimization method. The optimization method based on VERICUT uses the relationships to improve machining efficiency and tool life, thus reduce the large automobile cover die processing costs. The simulation and the optimization laid the foundation for the follow-up physical simulation and experiment.

Abstract: Cutting force can response changes in cutting process deeply, so it is important for studying cutting force on revealing the milling mechanism. For this reason, based on the support of finite element theory, a mesh adaptation method is used to establish the simulation model on die tool Cr12MoV during high-speed milling by simulation software ThirdWave, and the effects of different cutting conditions on cutting force are studied by simulation method, which has verified the simulation results by experiments. The results of research also have certain reference significance on the optimization of cutting process and hard milling mechanism.

Abstract: According to the process characteristics of shell ring, the cutting parameters have been optimized by adopting appropriate boundary conditions at different machining stages and the optimal cutting parameters have been achieved. The objective function and constraints boundary have been stored into the database, which form basic data structures of database. Cutting parameters have been obtained for new type tools using rule-based reasoning approach. According to the characteristics of large number of changing tool for shell ring, tool life prediction is designed, which is very favorable for large shell ring processing. In addition, on-site processing recorded video will be added to the database by multi-media technology, which achieves the diversity of data structure.