MK2120+B Type CNC Internal Cylindrical Grinder - Main Applications and Structural Features
This machine tool is a three-axis (X feed, Z grinding wheel, B indexing axis) CNC internal cylindrical grinder, mainly used for grinding the internal cylindrical holes, internal tapered holes, internal ends, and external ends of workpieces. The grinding cycles are all automatically completed (including automatic feeding, retracting, rough grinding, and fine grinding; automatic wheel correction, and automatic compensation functions).
● Machining centers feature workpiece feeding, B-axis indexing (torque table), and a structure with the worktable (grinding wheel stand) moving left and right. Both the workpiece box feeding and the grinding wheel stand movement are guided by rolling linear guides, all driven by servo motors and ball screw motion. The rotating speeds of the workpiece spindle and the grinding wheel spindle are controlled by variable-frequency drives for stepless speed adjustment. The workpiece clamping is a hydraulic power chuck, and other matching fixtures can be configured according to the specific characteristics of the customer's workpiece.
● The machine tool features a fully enclosed protective cover, a front-mounted rotating control box, and a rear-mounted backpack-type electrical cabinet.
1. Turning Inner Hole Diameter Range: 20-200 mm 2. Turning Inner Hole Depth: 200 mm 3. Workpiece Motor Power: 2.2 kW 4. X-axis Servo Motor Power: 11 Nm 5. Z-axis Servo Motor Power: 11 Nm 6. Grinding Wheel Electric Spindle Power: 7-22 kW 7. B-axis Torque Motor Power: 2.2 kW 8. Grinding Wheel Electric Spindle Speed: 0-24,000 (r/min) Variable Speed 9. Workpiece Speed: 0-600 (r/min) Variable Speed 10. B-axis Positioning Accuracy: ±4 arc seconds 11. X, Z-axis Positioning Accuracy: 5 μm 12. B-axis Repeatability Accuracy: ±2 arc seconds 13. X, Z-axis Repeatability Accuracy: 2 μm 14. X-axis Travel: 250 mm 15. Z-axis Travel: 600 mm 16. X-axis Speed: 6 m/min 17. Z1-axis Speed: 10 m/min 18. Machine Outline Dimensions: 3400×2500×2700 mm 19. Machine Weight: 5800 kg 20. Rated Power: 18 kW 21. Machining Precision: - Inner Hole Roundness: 2 μm - Inner Hole Cylinder: 3 μm - Inner Hole Surface Roughness: Ra0.4 μm
