1 Introduction: Grinding machines used in standard machining, grinding wheel motors are operated according to the traditional starting circuit. After the motor starts, it runs at the rated speed. Because the grid voltage has a certain fluctuation of the grinding machine, the grinding load of the grinder workpiece grinder changes the grinding machine, which will affect the motor grinding machine speed error. The standard grinding wheel motor starting circuit generally has only one processing speed, which is difficult to adapt to different workpiece size grinders. Different grinding machines are required to process the relative linear velocity, so that the precision of the machining of the workpiece grinding machine is difficult to guarantee. Therefore, from the aspects of improving processing quality processing efficiency and saving energy, the frequency conversion speed regulation technology is applied to the grinding machine, and the satisfactory grinding machine effect can be received. There are many kinds of grinding machines processed by grinding machines in the machining industry. The size and size of the workpieces are different, and the machining accuracy is required to be different. Relative grinding machines require different grinding wheel speeds in the spindle grinding machine. It is difficult to adjust the spindle grinding machine speed to meet the workpiece grinding line speed. Moreover, due to the bending stress of the grinding machine generated by the shaft machining process, the grinding wheel will produce different grinding wheel torques, which will result in different grinding wheel output speed/torque change, and the corresponding grinding machine will produce vibration knife pattern/burning paste, etc. The grinding accuracy is difficult to guarantee, resulting in low production efficiency and low quality. With the development of power electronics technology grinding machines, frequency conversion speed technology grinding machines are becoming more and more popular, and the application of frequency converter grinding machines in the machining industry receives good grinding results. Inverter grinding machine stepless speed regulation, soft start, constant torque output, great grinding machine meets the requirements of mechanical processing equipment for constant speed / constant torque grinding machine. 2. Grinding machine processing grinding machine load characteristics: According to the size of the grinding machine of different grinding rod shaft type, the grinding speed of the main grinding wheel motor is equal to the rotation speed of the grinding wheel output grinding machine. The size of the grinding force grinder depends on the output torque of the grinding wheel motor grinding machine. Drive the workpiece rotary grinding machine spindle motor grinding machine high-speed section, relative to the grinding wheel output speed, the diameter of the workpiece of the grinding machine is small, the grinding feed is less; when processing large diameter, long-axis workpiece, the workpiece rotates the grinding machine motor low speed section, the grinding wheel advances When the amount is large, the grinding force of the grinding wheel is also increased, and the motor is difficult to operate at constant torque/constant speed. Changes in the speed grinder produce changes in the grinding machine such as vibrating knife/burning grain/machining accuracy. The variable frequency speed motor grinding machine has stepless speed regulation, and the constant torque output can make up for the above defects. 3. Inverter grinding machine selection: According to the characteristics of the grinding machine of the system, considering the investment cost of the equipment required for the machining of the grinding machine, the selection of the grinding machine with automatic torque lifting function vector inverter. Taking the SANCH-S2000 series as an example, the 18.5KW/15KW grinding machine inverter is selected according to the grinding wheel motor power. The 15KW is taken as an example. The rated voltage is three-phase 380V, the output current is 32A, the frequency control is 0.5-400HZ, and the speed control is 0.1%. Load capacity 150% / 60S. With automatic torque boosting, flexible PWM control for lower noise operation, more than 10 stages of grinding speed control. Outdoor Lighting,Outdoor Led Shoebox Light,Outdoor Small Led Area Light,Outdoor Led Wall Light Fuonce Lighting , https://www.fuonce.com Previous page 1 2 Next page