Abstract: Five-axis linkage machining is an important way to achieve complex and smooth surface machining, and it is also a key direction for the integration of advanced technologies in the machine tool industry. As a key machine tool component, the A/C composite swing table is the core functional component of the five-axis linkage machining machine tool, and its performance largely determines the performance of the machine tool itself. The direct drive A/C composite swing table without transmission chain and reduction mechanism designed in this article is an electrical parallel control method based on coaxial control, which uses a servo driver to control two or more direct drive motors, effectively avoiding the problems of insufficient rigidity, clearance and wear in traditional mechanical transmission, and further reducing the cost of machine tools. Through research analysis, case application, and testing verification, the A-axis speed of the swing table was finally achieved at 40 r/min, with a dynamic accuracy of 2". The results show that the electrical parallel control of multiple coaxial direct drive motors can also achieve high-precision and high-speed synchronous control, and has significant advantages in cost and structural optimization.