A centerless grinder is a type of grinding machine that does not require the positioning of the axis of the workpiece to perform grinding. It is mainly composed of three mechanisms: a grinding wheel, an adjusting wheel and a workpiece support. The grinding wheel actually performs the grinding work. The adjusting wheel Control the rotation of the workpiece, and control the feed speed of the workpiece. As for the workpiece support to support the workpiece during grinding, there are several ways to cooperate with these three parts, except for stopping grinding, which are the same in principle.
The workpiece of the centerless grinder produces a waist drum shape:
①The front and rear guide plates are biased toward the guide wheel, and the workpiece is inclined to enter the grinding area, so that the front end is more ground; when the workpiece is about to be pushed out of the grinding area, the rear end is more ground. The front and rear guides need to be adjusted correctly.
②The front and rear guide plates are lower than the outer surface of the guide wheel when the workpiece enters the grinding area. The front end will be lifted by the guide wheel, causing the workpiece to tilt toward the grinding wheel; when the workpiece exits the grinding area, the workpiece will also be tilted, and the tail will be tilted toward the grinding wheel, so that the two ends of the workpiece are more ground. Waist drum shape. Correctly adjust the front and rear guide plates so that they are not lower than the outer surface of the guide wheel.
③The surface of the guide wheel is trimmed into a convex middle or the surface of the grinding wheel is trimmed into a concave middle, so that the workpiece is ground into a drum shape. The surface is adjusted by two wheels to eliminate the unevenness on the surface of the guide wheel and the grinding wheel.
