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    MK280 CNC internal grindin machine

    Home - Product - NC internal grinding machine series

    Main USES and structural features of machine tools
    • The machine is a two-axis CNC internal grinder, mainly used for grinding the workpiece's internal hole, step hole, internal taper hole, internal end face and external end face. The grinding cycle is completed automatically, including automatic feed and automatic back; Rough grinding, fine grinding; Automatic dressing grinding wheel, automatic compensation, interpolation correction and other functions.
    • The layout of this machine tool is fixed by workpiece box, the table (Z-axis) reciprocates vertically, and the sand wheel slide (X-axis) gives transverse feed. Both X and Z axes are driven by servo motor to drive ball screw drive.
    • The workpiece head bearing adopts high-precision double cylindrical roller bearing, the motor is driven by ac frequency conversion, and the workpiece speed is stepless regulated. The workpiece box is installed on the rotary plate of the bridge board; It can move and rotate laterally to meet the grinding needs of large aperture workpiece and workpiece with taper.
    • The machine tool control system adopts German Siemens 828 CNC system. Grinding wheel spindle adopts high precision mechanical spindle, electric machine AC frequency conversion, sand wheel speed non-pole adjustment.
    • The machine is equipped with a closed housing, a front rotary operating table, and a backpack-type electrical box.
    Ii. Main specifications and parameters of machine tools

    number name Main technical parameters
    1 Grinding bore diameter range φ50 ~ 800mm
    2 Maximum grinding bore depth 800mm
    3 Maximum turning diameter of workpiece (outside the casing) φlOOOmm
    4 Workpiece motor power 5KW
    5 Grinding wheel motor power 5.5KW
    6 X axis servo motor power 20NM
    7 Maximum X-axis stroke 250mm
    8 X axis feed velocity 5m/min
    9 Z-axis servo motor power 30NM
    10 Maximum Z stroke 1000mm
    11 Z-axis maximum velocity lOm/min
    12 X and Z axis servo motor resolution 0.001mm
    13 X axis positioning accuracy 0.005mm
    14 The X axis weight turned over the locating accuracy 0.002mm
    15 Z axis positioning accuracy 0.01mm
    16 Z axis heavy grip positioning accuracy 0.004mm
    17 Grinding head speed (stepless speed regulation) 1000-6000r/min
    18 Workpiece box turning Angle 士1 0°
    19 The workpiece speed 10-200r/min
    20 Total machine power 22.8KW
    21 Machine weight 500KG
    The machine bed fine degrees
    1 Inner hole roundness 3um
    2 Cylindricity of bore 5um
    3 Inner bore surface roughness Ra0.4um
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