Abstract : This paper proposes a design scheme for a dual-spindle flexible combination machine tool. This scheme utilizes linear motors and electric spindle technology, simplifying the spindle box structure and improving spindle performance. Due to the large number of motion axes and linkage axes, a dual-CPU CNC system with a multi-axis controller as the core and an industrial computer as the system support unit is adopted as the machine's control system. Keywords : Dual-spindle flexible combination machine tool, spindle box, linear motor, electric spindle, multi-axis motion controller. A combination machine tool is a special-purpose machine tool composed of general-purpose and special-purpose components. It typically employs multi-axis, multi-tool, multi-process, and multi-station simultaneous machining. Combination machine tools are characterized by high production efficiency, high degree of specialization and automation, and lower investment compared to flexible machining units, thus they are widely used in mass production. Since the 1980s, foreign countries have begun to focus on the flexibility of large and medium-batch production, vigorously carrying out research on the flexibility of combination machine tools and their automated lines, and successively developing NC slides, NC multi-axis general-purpose components, and interchangeable spindle box type combination machine tools. my country's modular machine tool industry, aiming at international development trends, has successively developed products such as automatic gearbox changing modular machine tools, turret-type modular machine tools, and CNC turret power heads. Technologies such as cross slides, moving spindle boxes, lifting spindle boxes, and rotary spindle heads have been applied to automated production lines. The development and improvement of three-coordinate modular machining units and the application of machining centers on automated production lines have greatly improved the flexibility of these lines. Automatic gearbox changing modular machine tools and turret-type modular machine tools are designed for several fixed machining programs, resulting in low flexibility. Although machining centers, through NC control, can automatically process various workpieces, their single-axis nature leads to low efficiency in machining some workpieces, such as multi-hole machining with varying hole diameters. To adapt to the needs of multi-variety, variable-batch production, this paper proposes a new design scheme. [b][align=center]For more details, please click: Structure and Control of Dual-Spindle Flexible Modular Machine Tools[/align][/b]