Spindle Housing

    Initial situation

    The bores of the spindle housing for machining centers are produced in 3 shifts with a fine boring tool. Continuous process monitoring by the operator is due to tight required tolerances and the current machining process needed.

    Material: Grey cast iron (GJL-300)

      Metric Imperial
    Bore-Ø: 121.539 +0.025 4.785 +0.001 in
    Length: 180 mm 7.0866 in


    Requirements

      Metric Imperial
    Surface: Ra 1.2 µm Ra 48 µin
    Concentricity: 0.015 mm 0.0006 in

     

     

    The URMA solution

    Special reaming tool with guide pads

    Multi-edged RX reaming tool with 12 teeth

    The ceramic guide pads assist the reaming insert to keep the required coaxiality.

    The RX reaming tool achieved high process reliability and successfully replaced the current fine boring tool. Manual intervention by the operator is reduced to a minimum which allows an automated production.

    More about special tools

    Cutting data URMA machining

      Metric   Imperial    
    Cutting speed Vc: 120 m/min SFM: 394 ft/min
    Feed per tooth fz:  0.18 mm ipt: 0.007 in
    Number of teeth: 12        
    Feed fv:  680 mm/min ipm: 26.7 in/min
    Radial stock removal ap:  0.15 mm D.O.C.: 0.006 in

    Highlights

    Tool life of 1300 pcs.
    Cycle time reduced by 10 times
    Automated production realized

    Do you have any questions?

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