Scroll compressor

Scroll-Spiral EN AW-4032 (AlSi12,5) & EN-GJS-400-15

Initial situation at the customer

Scroll compressor

  • Frequent customer complaints about fluctuations in component quality for machined thin-walled parts
  • Pilot run status of scroll parts made of cast iron

Special features of this solution

  • Frequent customer complaints about fluctuations in component quality for machined thin-walled parts
  • Pilot run status of scroll parts made of cast iron

Aluminium scroll

  • Milling - Roughing

    Milling – Roughing

    Solid carbide step milling cutter

    • Coated solid-carbide stepped end milling cutter
    • Special coolant supply and geometry facilitate optimal premachining of the scroll compressor

  • Milling - Finishing

    Milling - Finishing

     Milling - Finishing

    • Coated solid-carbide form cutter with step for edge breaking
    • High-precision finishing machining of the scroll contours

Cast scroll

  • Milling - Roughing

    Milling – Roughing

    OptiMill-Uni-Wave

    • Standard milling cutter
    • Wave serration and five cutting edges enable maximum economic efficiency and secure chip removal during pre-machining

  • Milling - Finishing

    Milling – Finishing

    Solid carbide form milling cutter 

    • Solid-carbide form cutter with step for edge breaking
    • Reliable finish machining for precise part contours

Processing steps on the scroll compressor

  • The combination tool finishes the recesses for the sealing grooves.

    Recesses for sealing elements

    • Pre-machining and finish machining of the recesses is carried out with double-edged PCD boring tools
    • Combination tool enables the machining of the connection bore
    • Distribution of the cut reduces cutting forces and ensures optimal chip formation

  • The boring tool with two stages machines the bearing bore of the scroll compressor.

    Precise bearing bore

    • Pre-machining is carried out by circular milling with a triple-fluted PCD milling cutter
    • Finish machining with double edge PCD boring tool with two stages and distribution of the cut to reduce the cutting forces

  • Machining of the high-precision spiral shapes with a milling cutter made of solid carbide.

    High precision spiral shapes

    • Pre-machining and finish machining with solid carbide milling cutters
    • Extremely sharp cutting edges ensure high dimensional accuracy

MEASUREMENT SERIES FLATNESS PROFILE IN PRE-SERIES

Advantages

  • Thanks to consistent component quality, customer complaints are avoided and costs are reduced considerably
  • Clear competitive advantage thanks to the cooperation with MAPAL and its years of experience and specialisation in motor vehicles
  • Intense supervision of series production enables reliable end-to-end machining of aluminium and cast iron

MEASUREMENT SERIES PERPENDICULARITY PROFILE IN PRE-SERIES