Abstract
An adaptive table motion control system for a surface-grinding machine using an accelerometer, installed in a magnetic chuck, was developed. Vibration signals generated by grinding action are detected by an accelerometer through a magnetic chuck and a workpiece. The signal is diminished when the grinding wheel leaves the workpiece. When the signal level drops below a preset trigger level, a command is sent to the NC controller of the surface grinding machine to reverse the table motion. Using this control system, the table motion is controlled so that the table stroke can be shifted along the workpiece shape. Thus, machining time can be reduced by 28 to 35%. This system can be used under air cut and spark out grinding.
