The traditional synchronous fixture used as assembly equipment in Guangdong Machinery Processing Factory moves the parts to the fixture center to ensure that the parts are placed in a fixed position after being taken out from the conveyor or from the equipment tray. However, in some applications, when the parts are forced to move to the center line, it may cause damage to the parts or equipment. When parts are fragile and small vibrations may lead to scrap, or when their position is specified by the machine spindle or mold, or when the tolerance requirements are very precise, it is better to let the fixture adapt to the position of the part instead of the other way around. For these tasks, Zaytran of Elyria, Ohio, USA, has developed non-synchronized Western-style compliant fixtures with general functional data. Because the clamping force and the synchronization device are independent, the synchronization device can be replaced with a precision sliding device without affecting the clamping force. The clamp specifications range from 0.2 inch stroke and 5 pounds of clamping force to 6 inches of stroke and 400 inches of clamping force. Guangdong Machinery Processing Factory is characterized by modern production in that batches have become smaller and smaller and the various specifications of the products have changed the most. Therefore, in the final stage of production, assembly is particularly fragile due to changes in production plans, batch sizes, and product designs. This situation is forcing many companies to devote more efforts to extensive rationalization reforms and assembly automation as mentioned earlier. Although the development of flexible fixtures quickly lags behind the development of flexible transportation processing devices, such as the development of industrial robots, they still try to increase the flexibility of fixtures. In fact, the special investment in production equipment, an important device of the fixture, has strengthened the economic support for making the fixture more flexible. According to their flexibility, the fixtures can be divided into special fixtures, modular fixtures, standard fixtures, and highly flexible fixtures. Flexible fixtures are characterized by their high adaptability to different workpieces and low replacement costs. The flexible fixture with changeable structure is equipped with parts that can change the structure arrangement (such as needle-shaped cheeks, multi-piece parts and sheet-shaped cheeks), non-special clamping or clamping elements for standard workpieces (for example: start standard clamp Holding fixtures and fixture kits with movable elements), or equipped with ceramic or hardened intermediary materials (such as: fluid particle bed fixtures and thermal fixture clamping fixtures). In order to produce, the parts need to be fastened in the fixture, which requires a clamping effect. There are several steps that have nothing to do with the flexibility of the fixture: The Guangdong Machinery Processing Factory determines the required position of the workpiece in the fixture according to the basic part to be processed and the characteristics of the work, and then must select a combination of several stable planes. These stable planes constitute the workpiece to be fixed in the fixture at a certain position The clamping-like contour structure balances all forces and moments, and ensures that it is close to the work characteristics of the workpiece. Finally, the required positions of removable or standard fixture components must be calculated, adjusted, and assembled so that the workpiece is firmly clamped in the fixture. According to such a program, the contour structure of the fixture and the planning and recording process of the assembly can be automatically controlled. The structural modeling task is to produce a combination of several stable planes, so that the clamping forces on these planes will stabilize the workpiece and the fixture. Conventionally, this task can be accomplished in a man-machine dialogue, that is, almost completely automated. The advantage of one-man-machine dialogue, which is to determine the structure of the fixture in an automated manner, is that fixture design can be organized and planned, reducing the number of designers required, shortening the research cycle and better configuring the working conditions. In short, it can successfully achieve a significant improvement in fixture production efficiency and benefits. The Guangdong Machinery Processing Plant can successfully save up to 60% of time after completing the first assembly after fully preparing the structure plan and a batch of materials. Therefore, the purpose of the fixture mechanism modeling process is to generate suitable programming files.