The MAPAL tool programme for series production of scroll compressors.

Electrified auxiliary units

As a result of electrification in the automotive industry, more and more drive tasks
of the internal combustion engines are being performed by electrified components.
By electrifying the auxiliary units, these components can be used as required and
depending on the load, and thus contribute to reduced energy consumption. They
stand out thanks to their high reliability and low noise emissions as well as excellent
energy efficiency.

Compresor de espiral como equipo secundario

Un ejemplo de un equipo secundario electrificado es el compresor de espiral, que se utiliza como compresor de refrigerante eléctrico en la gestión térmica. Como ejemplo se presentan tres mecanizados específicos en un compresor de espiral de aluminio para su uso en un vehículo eléctrico. 
Sectional view of scroll compressor

CARACTERÍSTICAS 

  • Piezas esenciales Orbit y Fixed Scroll 
  • La precisión de la geometría y el alojamiento es decisiva 
  • Posicionamiento exacto de las espirales entre sí 

REQUISITOS DE MECANIZADO 

  • Alta precisión dimensional de las espirales (≤ 20 μm) 
  • Alta perpendicularidad de los flancos respecto a la superficie base (≤ 20 μm) 
  • Paralelismo y planicidad de ≤ 10 μm 
  • Aspereza superficial (Rz) en el rango de una cifra 
  • Combinación perfecta de máquina y herramienta 

Pasos de mecanizado en el compresor de espiral como equipo secundario:

  • 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

Other electrified components