Machined Automotive Parts in China

1.Add a Radius to Internal Corners

Adding a small radius to internal corners helps improve machining efficiency and reduce tool stress. Sharp inner edges often lead to tool wear and poor surface finish. By adding a radius equal to one-third of the cavity depth, tool life and dimensional stability of machined automotive parts are significantly improved.

2.Avoid Excessive Part Length or Depth

Keeping the part size within reasonable proportions reduces cutting time and setup complexity. Long or deep automotive components require extra support or special tooling, increasing production cost. For best results, maintain a length-to-diameter ratio within 4:1 to achieve better rigidity and machining accuracy.

3.Increase Wall Thickness for Stability

Thin walls can deform under cutting force, especially during high-speed machining. Increasing the wall thickness slightly enhances dimensional accuracy and minimizes vibration — improving both stability and productivity for machined automotive parts.

4.Use Standard Diameters and Threads

Designing automotive parts with standard diameters, hole sizes, and thread pitches simplifies production and reduces tool change time. Standardization ensures faster processing, lower costs, and consistent repeatability during mass production.

5.Specify Tight Tolerances Only When Necessary

Unnecessarily tight tolerances can greatly increase machining time and inspection costs. Define tolerances based on actual functional needs — for most non-critical machined automotive parts, standard tolerances are precise enough while keeping manufacturing costs under control.

6.Leverage the Machinability of Materials

When designing machined automotive parts, consider materials with good machinability such as aluminum, brass, or mild steel. These materials allow higher cutting speeds, smoother finishes, and longer tool life — all of which contribute to lower manufacturing costs and greater efficiency.