Main Applications and Structural Features of Machining Machines

• This machine tool is a two-axis CNC internal cylindrical grinding machine, primarily used for grinding the internal bores, step holes, internal conical holes, internal and external end faces of workpieces. The grinding cycles are all automatically completed, including automatic feed and retract; rough and finish grinding; automatic truing of the abrasive wheel, automatic compensation, and interpolation correction, etc.

• The machine tool layout features a fixed workpiece box, with the worktable (Z-axis) moving longitudinally back and forth, and the grinding wheel slide (X-axis) feeding horizontally. Both X and Z-axis movements are driven by servo motors through ball screw transmission.

• The workpiece head bracket uses high-precision double cylindrical roller bearings, driven by an AC variable frequency motor, allowing for variable speed adjustment of the workpiece rotation. The workpiece box is mounted on the rotating plate of the bridge; it can move horizontally and rotate to accommodate the grinding needs of large diameter workpieces and those with conical shapes.

• This machine tool control system utilizes the German Siemens 828 CNC system. The grinding spindle is equipped with a high-precision mechanical spindle, featuring AC variable frequency motor and infinite speed adjustment for the grinding wheel.

• Machines are equipped with enclosed covers, front-mounted rotating workbench, and rear-mounted backpack-style electrical box.

1. Turning Inner Hole Diameter Range φ50 ~ 800mm 2. Turning Inner Hole Depth 800mm 3. Workpiece Swing Diameter (Outside) φ1000mm 4. Workpiece Motor Power 5KW 5. Grinding Wheel Motor Power 5.5KW 6. X-axis Servo Motor Power 20NM 7. X-axis Travel 250mm 8. X-axis Feeding Speed 5m/min 9. Z-axis Servo Motor Power 30NM 10. Z-axis Travel 1000mm 11. Z-axis Speed 10m/min 12. X, Z-axis Servo Motor Resolution 0.001mm 13. X-axis Positioning Accuracy 0.005mm 14. X-axis Repeatability Accuracy 0.002mm 15. Z-axis Positioning Accuracy 0.01mm 16. Z-axis Repeatability Accuracy 0.004mm 17. Grinding Head Speed (Variable Speed) 1000-6000r/min 18. Workpiece Box Rotation Angle ±10° 19. Workpiece Speed 10-200r/min 20. Total Machine Power 22.8KW 21. Machine Weight 500KG 22. Machine Precision: Inner Hole Roundness 3um, Inner Hole Cylinder 5um, Inner Hole Surface Roughness Ra0.4um