How does a centerless grinder achieve grinding?
Centerless grinders are efficient grinding equipment that are widely used in many industrial applications. This equipment uses the principle of rubber or metal wheels for workpiece grinding, and completes the grinding process by rotating on the outer surface of the workpiece. Since the grinding process does not require a clamping center, workpieces of different lengths, irregular diameters, and complex shapes can be processed. At the same time, since the grinding pressure is only concentrated on the surface of the workpiece, deformation of the workpiece body is avoided, so high-precision grinding results can be obtained. It can handle workpieces with complex shapes and is mainly used in automobiles, aviation, engineering machinery, electronics, medical equipment and other fields.
The machine tool itself has high precision and will not be affected by external forces during processing. Therefore, the processed parts have high stability and can meet the work requirements. Using fully automatic CNC technology, through the program control of the CNC system, it can achieve single setting and continuous mass production, reducing manual operations and improving production efficiency. The accuracy can reach less than 0.001mm, which can meet the processing needs of high-precision parts.
The grinding of the centerless grinder is carried out by operating the grinding rod. The structure of the grinding rod is different from that of ordinary grinding machines. It consists of two external cylinders set in spherical sliding sleeves of different sizes, and is connected to the workpiece through the grinding machine spindle. The spherical sliding sleeve of the grinding rod automatically adjusts to the center position of the workpiece, and then gradually moves the grinding rod to grind the surface of the workpiece. Since the workpiece does not need to be centrally clamped, problems such as breakage, deformation, and deformation of the workpiece can be prevented.
The movement of the grinding bar is controlled by tiny signals between the grinding machine spindle and the workpiece. These signals detect the center position of the workpiece and adjust the position and direction of the grinding bar based on that position. This grinding method makes grinding more precise and can meet more precise processing requirements.
The grinding methods of centerless grinders can be divided into two categories, namely feed grinding and retreat grinding. Among them, feed grinding means that during the movement of the workpiece, the grinding wheel and the workpiece remain relatively stationary, and the workpiece is ground at the grinding wheel. Retreat grinding is achieved by making relative motion between the grinding wheel and the workpiece after the workpiece stops moving.