电动驱动装置

随着时代的前进,现代汽车制造商和供应商在电动机结构组件制造方面正面临新的挑战。下面的示例显示了一个电动机外壳的大小:和变速箱壳体相比,由于电动机外壳体的加工精度对电动机效率发挥绝对的影响力,因此其外壳体的加工必须在极小的公差范围内实现。 

另外,由于其上所属的一些特殊结构,例如:集成的冷却通道,使得电动机壳体的壁厚通常比变速箱箱体的壁厚要薄很多。另外,在某一些电动机外壳体中,压装进去了由钢材料制成的轴承衬套。在加工中产生钢质切屑的过程中,刀具上的特殊保护罩可确保这些切屑不会和铝表面发生接触而造成工件损坏。 

不同外壳体类型的切削加工要求和特征


Procedura di base per la lavorazione del corpo statore 

Sia il processo di lavorazione sia gli stessi utensili vengono realizzati a seconda della situazione dimensionale, dell’impianto industriale e del sistema di serraggio. Questo mantiene le forze di taglio che agiscono sul componente al livello più basso possibile. La suddivisione della lavorazione del foro statore avviene in tre passaggi: prelavorazione, semifinitura e lavorazione di precisione. 

Basic procedure for machining of stator housings
Stator housing external machining

External Machining stator housing

External machining of stator housings for electric motors is a demanding task. These housings, which often come in tubular or pot-shaped designs, are crucial for the efficiency of the electric motor. Several challenges have to be overcome during the process. The thin-walled aluminium housings with integrated ribs for the cooling circuit require the highest precision in terms of diameter accuracy, shape and position tolerances. The concentricity between different diameters is of huge importance.

Pre-machining
  • Helixfräser mit ISO-Wendeschneidplatten

    Helix milling cutter with ISO indexable inserts

    Roughing of outer diameter and surface

    • Coated ISO indexable inserts made of carbide or PCD-tipped indexable inserts
    • Reduced cutting forces
    • Standard product
    • HSK extension for different machining depths

  • ISO BORING TOOL Roughing of outer diameter

    ISO boring tool

    Roughing of outer diameter

    • Multi-stage bell tool for external machining
    • ISO indexable inserts

  • MILLING CUTTER WITH ISO INDEXABLE INSERTS

    Milling cutter with ISO indexable inserts

    Roughing the sealing groove

    • Coated ISO indexable inserts made of carbide
    • Optionally with vibration damper
    • Effective roughing of the sealing grooves

Finish machining
  • PCD MILLING CUTTER WITH SPECIAL CONTOUR

    PCD milling cutter with special contour

    Finishing the sealing groove

    • PCD form cutting edge
    • Perfect geometry of the individual recess contours
    • Optionally with vibration damper
    • Finish machining of all recesses in a single cut

  • PCD MILLING CUTTER WITH SPECIAL CONTOUR Finishing the sealing groove

    Lightweight fine boring tool

    Finishing the outer diameter

    • Adjustable PCD cutting edges
    • Lightweight tool body
    • Up to Ø 260 mm machining diameter


Machining solutions for...

MAPAL Basic, Performance, Expert Line

Further machining solutions

  • Bearing and position bores

    With maximum concentricity and roundness

    read more
  • Außenreibahle mit EA-System

    External machining bearing bore

    External reamer with EA system

    • External machining of the bearing bore

  • Planfräser mit PKD-Fräseinsätzen

    Face milling cutter with PCD milling inserts

    • Creation of defined surface profiles for sealing and contact surfaces (e.g. cross-cut structures)
    • Surface finish Rz < 1


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