Page 10 - SolutionsForElectricalVehicle_mm_inch_2021

Rotor

Turning

The rotor consists of many stacked plates of electric steel.

Lamination sheets are used instead of a solid body to reduce
current loss. The surface must be completely clean of chips,

oil, water, dust or dirt, and coolant fluid cannot be used,
only air. This is a challenge as a lot of heat is generated
on the cutting area and the fragmented chips stick
to the surface. Surface finish requirements for this

interrupted turning operation remain strict.

ISCAR has overcome these challenges by developing a

combined tool with coolant holes both on top and bottom
of the cutting edge to cool and blow away the chips. The
two round inserts are positioned for semi-finish and finish

operations, generating an Ra 1.9. surface quality.

10 ISCAR