Grinding machine variable speed control method, the grinding process has three stages, namely the beginning stage, the formal stage and the end stage. The grinding tool rotates at an increasing speed in the initial stage, the grinding tool rotates at a constant speed in the formal stage, and the grinding tool rotates at a reduced speed in the final stage. It is characterized in that: At the beginning of the grinding process, the acceleration that artificially controls the speed of the grinding tool increases from zero to fast. When the speed of the grinding tool rises to half of the formal grinding speed, an inflection point appears in the acceleration change, and the acceleration that controls the speed of the grinding tool is increased by The maximum value decreases from fast to slow until the grinding tool speed reaches the official grinding speed, and the acceleration of the grinding tool speed drops to zero.　　
Using the characteristic of fixed abrasive grinding, according to the relative motion trajectory density distribution between the workpiece and the abrasive tools, reasonably design the abrasive density distribution on the abrasive tool, so that the wear of the abrasive tool during the grinding process does not affect the surface accuracy of the abrasive tool. , So as to significantly improve the surface accuracy of the workpiece, and avoid the trouble of dressing abrasive tools. In plane fixed abrasive grinding, the rotational movement of the abrasive tool is the main movement, and the movement of the workpiece is the auxiliary movement. In most cases, the workpiece is floating on the abrasive tool, and its motion law is unknown. Therefore, it is necessary to analyze the force of the workpiece in order to find the force state and the law of motion. The workpiece is taken as a separate body of the entire grinding system, and the differential equation of the workpiece force balance is established, and the law of movement of the workpiece can be obtained by solving the equation.　

The main engine of the pneumatic grinder is driven by a speed-regulating motor, equipped with a high-power deceleration system, soft start, soft stop, and stable operation. Through the upper and lower grinding discs, the sun wheel, and the star wheel during processing, four directions and coordinated grinding motions are formed to achieve the efficient operation of simultaneous grinding of the upper and lower surfaces. The lower grinding disc can be raised and lowered to facilitate the loading and unloading of the workpiece. Pneumatic sun gear redirection device, accurately control the grinding accuracy and speed of both sides of the workpiece. It is equipped with a correction wheel, which is used to correct the parallel error of the upper and lower grinding discs.　
　
The grinding basket grinder inherits the characteristics that the two processes of the basket grinder dispersing and grinding are realized on one machine and one process. At the same time, it can also be used as a disperser alone (when the dispersing disc is in the working position and the grinding basket is not lowered) . For materials that need to be ground, the function of first dispersing and then grinding can be realized (when the grinding basket is lowered to the working position, the material can be finely ground with high efficiency)

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