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Electrification in the Automotive Industry

Electrification in the Automotive Industry

Electrification in the Automotive Industry

The automotive industry is on the brink of colossal changes. Marat Faingertz of ISCAR looks into the impact of this trend on the metalworking industry, and how new machining requirements can be addressed.

Public awareness of global warming, together with a pressing concern to create and maintain a clean environment, has led to a series of legislations worldwide that is forcing automakers to decrease CO2 emissions. Apart from improving fuel consumption, downsizing engines, and making lighter vehicles, automakers must turn to new technologies in order to cope with these emission limitations.

A rapid increase in battery electric vehicle (BEV) development, manufacture, and implementation, shows that electric vehicles are not only the future but are, in fact, the present. The automotive industry is on the brink of colossal changes and soon our perception of cars and transportation may alter completely.

ISCAR, a company with many years of experience in the production of metal cutting tools, offers unique, cutting-edge solutions for the new BEV Industry. As a leader in providing productive and cost-effective machining solutions, ISCAR strives to stay up to date with all the new trends and technologies and be a part of a brighter, greener future.

The following is a list of some of the common component machining processes in the BEV industry and some of the leading possible machining solutions and recommendations for each part.

Stator Housing Machining

One of the most notable trends of the electric vehicle powertrain is its simplicity. There are far fewer moving parts compared to the traditional internal combustion engine (ICE), therefore, manufacturing time and cost dramatically drop when producing BEVs. 

One of the main components of an electric motor is the motor (stator) housing made from aluminium. A special approach is needed to achieve this part’s critical key characteristics of lightweight, durability, ductility, surface finish and precision, including geometrical tolerances. The partially hollow form represents an additional challenge and maintaining low cutting forces is essential for roughness and cylindricity requirements.

ISCAR’s complete machining solution for this process has facilitated the transformation from the standard costly lathe-based process to an economical machining centre. Our aim is to reduce scrapped parts and reach an optimal CPK ratio (Process Capability Index—a producer’s capability to produce parts within the required tolerance).

Main Diameter Reaming

The most challenging operation in machining the aluminium stator housing is the main diameter boring and reaming. Because of the trend to use low power machines, the tool’s large diameter and long overhang require creative thinking to minimise weight and spindle load while maintaining rigidity. Exotic materials such as titanium and carbon fibre are used for the tool body, as well as the welded frame design.

The use of Finite Element Method (FEM) helps resolve the obstacles associated with this challenging application by enabling the consideration of many parameters, such as cutting forces, displacement field during machining, natural frequency, and maximum deformation.

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