Application of topology optimization technology in machine tool structural design

Topology optimization technology is one of design method which combined with mathematical nonlinear program algorithm and finite element method. This method have been widely used in variety of product design, such as: weight loss design, improved performance, shape design and other product design. Using this method for structural optimization design, not only can significantly reduce development costs and time, but also provide innovative product design concepts. First, according to the machine tool code, configuration code, and the rooted tree this three kind of common machine tool coding system. Integration and re-induction of a new coding system that can describe the motion of the machine tool and characteristics of compoment relationship, and also establishment one by one parametric naming rules. With the concept of modular that can be reversed by the new coding system to establish machine tool geometry configuration. Next, considering the actual vertical 3-axis machine tool type for industry used. Using finite element analysis can define corresponding value for static analysis, modal analysis, or other loadcases. As the results of the analysis, those value can be the baseline of machine tool. According to modular concept can build a simple machine tool geometry configuration which corresponds to the new coding system and machine tool dimension. After the completion of three topology optimization settings, include design variables, objective function and constraints function, then machine tool start to topology optimization iteration. Finally, compare the topology optimization result of structural parameters (for example: mass, stiffness, natural frequency, etc.), as well as the percentage for each part and whole machine. Hope establish the topology optimization design process, then import this process into early development of machine tool structure design.