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Application of CNC Turning Parts in the Automobile Manufacturing Industry

2025-07-31

The application of CNC turning parts in the automotive manufacturing industry is primarily reflected in the following key areas, driving industry upgrades through high-precision, automated machining technologies:

1. Core Engine Components

Crankshafts/Camshafts: Multi-axis turning technology achieves micron-level (±0.002mm) roundness control, reducing engine vibration and noise while improving power efficiency.
Cylinder Blocks/Pistons: Combined turning and milling processes create complex internal surfaces, meeting the high sealing requirements of aluminum alloys.

2. Transmission Parts

Transmission Gears: Turning combined with subsequent grinding processes allows tooth profile errors to be controlled within 0.002mm, significantly improving shifting smoothness.
Drive Shafts: High-rigidity turning solutions address deformation issues associated with slender shafts, achieving straightness of 0.01mm/m.

3. Chassis and Braking System

Steering Knuckle/Wheel Hub: Five-axis turning centers enable multi-angle hole machining in a single clamping operation, achieving a positioning accuracy of ±0.015mm.
Brake Disc: High-speed dry turning achieves a surface roughness of Ra 0.8μm, reducing brake judder.

4. Key Components for New Energy Vehicles

Motor Shaft: Silicon steel sheets are turned using ceramic tools, avoiding magnetic degradation associated with traditional machining.
Battery Housing: Thin-walled aluminum alloy turning processes maintain a wall thickness tolerance of ±0.05mm, meeting lightweighting requirements.

Technology Trends

Intelligent Integration: Real-time optimization of turning parameters is achieved through the Industrial Internet. For example, Tesla uses a vision-guided system to dynamically compensate for positioning errors, increasing machining efficiency by 85%.

Combined Machining: Turning and milling centers now account for 32% of the total, reducing process cycle time by 50%.

Currently, China's automotive manufacturing industry still faces the challenge of relying on imports for core components such as high-end turning machine tool spindles, but local companies such as Huaya CNC have launched innovative solutions such as dual-spindle turning centers.

Shenzhen Perfect Precision Product Co., Ltd.

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