電気駆動

自動車メーカーやサプライヤーは、eモーターの製造パーツに関して新たな課題に直面しています。eモーターハウジングの例を見ると、この問題がいかに大きいかが分かります。ギアボックスハウジングと比較して、精度が電動モーターの効率に決定的な影響を与えるので、はるかに狭い許容範囲内で製造せざるをえません。 

さらにeモーターハウジングは、例えば一体型冷却チャネルのような特殊な設計により、ギアボックスハウジングよりもはるかに薄くなっています。これらのハウジングのいくつかにおいては、さらに鋼材のベアリングレースが押し込まれています。ツール内の特殊な保護シールドにより、加工中にスチールの切り屑がアルミニウムの表面に接触して損傷することはありません。 

さまざまなハウジングタイプの機械加工条件&特性


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

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


Other electrified components