Grinding wheel cutting apparatus and cutting method

A rod workpiece cutting method for cutting a rod workpiece with a grinding wheel cutting apparatus, wherein the grinding wheel cutting apparatus comprises a first laser distance sensor, a master controller and a grinding wheel, and the first laser distance sensor is communicatively coupled to the master controller;

• the laser distance sensor is configured to obtain an outer diameter of the rod workpiece;
• the master controller is configured to determine a segment length of a segment to be cut off from the rod workpiece based on the obtained outer diameter, a material density of the rod workpiece and a segment weight;
• the master controller is configured to perform a control to circularly cut the rod workpiece by the grinding wheel, according to the segment length and a preset reserved core diameter;
• the method comprises:
• determining the material density of a to-be-cut rod workpiece and the segment weight according to a user instruction;
• obtaining the outer diameter of the rod workpiece;
• determining the segment length based on the outer diameter, the material density of the rod workpiece and the segment weight;
• circularly cutting the rod workpiece according to the segment length and the preset reserved core diameter;
• obtaining a cut depth of the rod workpiece;
• and
• determining a compensation depth for the next cut based on the obtained cut depth and a prescribed compensation algorithm.