Applications:

1. Pedal manufacturing: CNC machined parts are commonly used in the manufacturing of automotive pedals, including brake pedals, accelerator pedals, etc., used for the driver to control the vehicle's acceleration, deceleration, and other functions.
2. Material selection: Pedals require materials with certain strength and wear resistance, such as aluminum alloys, stainless steel, etc., to meet the requirements of automotive use.

Manufacturing challenges:

1. Complex shapes: Pedals typically have complex shapes and curves that require precise machining, placing certain demands on machining processes and equipment.
2. Surface treatment: Pedals usually require surface treatments such as painting, polishing, etc., to improve their appearance and durability, increasing the manufacturing difficulty.
3. Safety requirements: As important control components of vehicles, pedals have high safety requirements to ensure their stability and reliability during use.

These applications and manufacturing challenges need to be comprehensively considered in the design and manufacturing processes of CNC machined parts to ensure that the pedals meet the quality and performance requirements of the automotive industry.