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S7620A internal thread grinding machine


Mainly used for grinding cylindrical, conical, triangular, arc-shaped internal threads

Classification:

Complete set of ball screw processing equipment

Product accessories:

  • Main use
  • CNC system configuration
  • Working accuracy
  • Technical features
  • Main specifications and parameters
    • Commodity name: S7620A internal thread grinding machine

    Mainly used for grinding cylindrical, conical, triangular, arc-shaped internal threads

    It is mainly used for grinding cylindrical, conical, triangular and arc-shaped internal threads.

     

  • Precision pitch error of grinding cylindrical triangular internal thread (pitch within 6mm)

    Adjacent pitch error: 0.003mm

    On 25mm length: 0.005mm

    On 100mm length: 0.006mm

    Thread surface roughness: Ra0.4μm

    the accuracy of grinding circular arc thread:

    Basic lead limit deviation: 0.005mm

    Cumulative error over 25mm: 0.008mm

    Cumulative error over 50mm: 0.009mm

  • • The machine can use single-stroke or double-stroke grinding and is equipped with an automatic wheel dresser.

    • Grinding wheel spindle adopts precision hydrostatic bearing.

    • The machine tool adopts a fully enclosed large enclosure and is equipped with a mist suction device.

    • The workpiece speed is divided into two gears, high and low, and can be stepless speed regulation.

    • Machine tool pitch adjustment using exchange gear.

    • Triangle and arc shape dressing by replacing different dresser.

  • • Maximum chuck diameter: 300mm

    • Maximum workpiece length: 200mm

    • Maximum grindable diameter

    • Arc thread: Φ25-Φ100mm

    • Triangular thread: Φ25-Φ200mm

    • Maximum stroke length of worktable: 440mm

    • Grinding thread pitch

    • Metric thread: 1-24

    • Imperial thread: 3 teeth/h -20 teeth/h

    • Maximum length of grinding thread

    • Cylindrical thread: 125mm

    • Conical thread: 80mm

    • Maximum screw angle that can be ground: 12 ° left, 8 ° right

    • Number of grinding threads: 1, 2, 3, 4

    • Headrest spindle revolutions

    • Working (stepless):0.3-15r/min,0.6-30r/min

    • Fast return: 60r/min,100r/min

    • Lateral movement of grinding wheel rack: 0-60mm

    • One grid of transverse feed handwheel: 0.01mm

    • Maximum rotation speed of grinding wheel spindle: 18000r/min (frequency conversion speed regulation)

    • Grinding wheel size

    • Maximum diameter: Φ100mm

    • Minimum diameter: Φ20mm

    • Machine dimensions (length x width x height):2220mm x 1338mm x 2000mm

    • Machine weight: about 4500kg

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