In the theme activity of the industrialized production of machinery and equipment, the sprocket chain is a very key universal basic component. Because of the characteristics of the transmission system of the sprocket chain itself, the sprocket chain suffers from the alternating moment of inertia of the transmission chain and the sliding friction force between the transmission chain and the sprocket chain tooth groove during the operation of the specific transmission system, and the damage is serious. The sprocket chain may have to be replaced several times during the entire life of the mechanical equipment. Therefore, the standardization of the sprocket chain and the standardization of the sprocket chain have become a corresponding measure to ensure the interchangeability of the sprocket chain, simplify the design plan, improve product quality and control costs. Because the chain drive is a non-conjugate point toothing drive system with a positive middle flexible part, the geometry of the sprocket and chain tooth profile curve diagram has a very large selection and coordination ability. 1. Regarding the design specifications of sprocket chains: sprocket chains are generally developed in accordance with the following two levels of design specifications, as follows: (1) The tooth profile of the sprocket chain must ensure that the chain is environmentally friendly, energy-saving, stable and easy to enter and exit the toothing, try to avoid the impact and contact pressure of the chain segment during toothing, and to facilitate production and processing. (2) The sprocket chain is composed of three arcs aa, ab, cd and a parallel line bc, which is commonly called three arc-parallel tooth profile, and the tooth profile is produced and processed by standard CNC blades. Specializing in the production of non-standard sprocket manufacturers 2. The geometric shapes of the sprocket and chain teeth are also very diverse. The geometric shapes of the common sprocket chains are, for example: three-arc linear type, two-arc linear type, two-arc convex tooth type, An arc straight line type, a parallel line tooth profile and a parallel line tooth profile with an offset in the cogging management center. 3. Regarding the sprocket design standards, the key to the general sprocket sprocket design plan should consider three levels of regulations: namely, tooth engagement regulations, application regulations, process performance and precision regulations, and are divided into the following 6 levels in detail: (1) Ensure that the transmission chain can be engaged in and out successfully, and it is not easy to cause diffraction. (2) It has sufficient working capacity to accommodate the extension of the transmission chain's pitch diameter. (3) Possess an effective function angle. (4) The tooth profile curve diagram is consistent with the working condition of the chain transmission. (5) It is beneficial for biting in and avoiding the chain drop due to the vibration of the transmission chain. (6) Good performance in production and processing technology.