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


Basic procedure for machining of stator housings

The machining process as well as the tools are designed individually depending on the
measurement situation, machine park and clamping setup. In this way, the cutting forces
applied to the component are kept as low as possible. The machining of the stator bore is divided into 3 steps: Pre-machining, Semi-finish machining and Finish machining.
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

Mecanizado de acabado
  • PCD MILLING CUTTER WITH SPECIAL CONTOUR

    Fresas PCD con contorno especial

    Acabado de las ranuras de sellado 

    • Corte de forma PCD 
    • Geometría perfecta de los contornos individuales de las ranuras 
    • Opcionalmente con amortiguador de vibraciones 
    • Mecanizado de acabado de todas las inserciones en un solo corte 

  • PCD MILLING CUTTER WITH SPECIAL CONTOUR Finishing the sealing groove

    Herramienta de taladrado de precisión en construcción ligera

    Acabado del diámetro exterior 

    • Insertos de PCD ajustables 
    • Cuerpo de la herramienta en construcción ligera 
    • Diámetro de mecanizado hasta Ø 260 mm 


Soluciones de mecanizado para…

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


Other electrified components