High-efficiency grinding of CNC universal grinder includes ultra-high speed grinding, high-efficiency deep grinding, slow-feed grinding and abrasive belt grinding. In ultra-high speed grinding, the linear speed of the grinding wheel is more than 150m/s, the number of abrasive grains in the grinding area increases per unit time, and the thickness of the grinding debris cut by each abrasive grain becomes smaller, and each abrasive grain is cut during ultra-high speed grinding. The thickness is thin. Ultra-high-speed grinding can grind hard and brittle materials, and also has good grinding performance for hard materials such as high plasticity. At the same time, ultra-high speed grinding shortens the processing time, thereby reducing energy consumption and reducing noise pollution.
In the high-efficiency deep grinding technology of the CNC universal grinder, the grinding wheel has a speed of 100-250 m/s, a feed speed of 0.5-10 m/min, and a depth of cut of 0.1-30 mm. Through a grinding stroke, the rough finishing process consisting of multiple processes such as turning, milling and grinding can be completed at the same time, and the metal removal rate is much higher than that of the ordinary grinding process, and the surface quality can also reach the ordinary grinding level.
The slow-feed grinding of the CNC universal grinder is to increase the grinding depth, reduce the feed speed, form a large contact area between the grinding wheel and the workpiece, and achieve a high metal wear rate. Slow feed grinding is a processing method that can quickly remove large amounts of material and machine precision parts.
The belt grinding process of the CNC universal grinder is to place the annular belt on the outer circumference of the contact wheel and the tensioning wheel. In the tension state, a method of grinding the surface of the workpiece by contacting the surface of the high-speed rotating abrasive belt with the machined surface of the workpiece and generating a relative frictional motion under a certain pressure.