RU3000 CNC Universal Grinding Machines


RU3000 CNC Universal grinding machines


The grinding machine RU3000 proposal is designed in accordance with the production process of broaches. This grinding machine is constituted by a high quality cast iron monolithic base, with a flat guide and a guide “V” for the movement of the carriage grinding wheel along the axis Z. 
The surfaces are scraped by hand to ensure the maximum precision of linearity and flatness in the different positions of the grinding wheel head.  The contact between the grinding of the carriage and the base is made of special anti-friction plastic material (Turcite). 
The X-axis of the carriage grinding wheel is made of high quality cast iron, normalized. Double prismatic guide, with forced lubrication for perfect alignment. The directional guides have high resistance to lateral forces.  The transverse movement of the grinding head is given by a very high precision of the recirculating ball, driven by a brushless motor of Siemens. Monitoring the position it is detected by a linear encoder Heidenhain controlled by CNC (X axis). The longitudinal movement (Z axis) is given by a recirculating screw preloaded ball. The machine has a double-spindle grinding wheel. The head rotates of 20° and 200° automatically. The locking of the rotation is constituted by a hydraulic clamping. The rotation of the grinding head is from 0° to 140°: 

positioning accuracy - 0.01mm; 
positioning repeatability - 0.005 mm.


Height of centers  400 mm 
Range of grinding wheel diameters for OD grinding  400÷600mm 
Max permissible diameter  800 mm 
Length of grinding zone  3050 mm 
Distance between centers  3100 mm 
Weight admitted between centers  2000 Kg 
Grinding wheel spindle motor power  24+24 kW 
Max speed rotating headstock  300 rpm 
Speed range of the grinding wheel during work  30 ÷ 125 m/sec 
Speed feed Z axis  0 ÷ 3500 mm/min 
Speed feed X axis  0 ÷ 5000 mm/min 
Headstock motor power  5,5 kW