The processability requirement of parts is to be able to manufacture parts with less cost and labor under given process conditions and production levels, and to facilitate assembly. It is necessary to consider various aspects such as production batch size, materials, blank production, processing methods, assembly process, and usage requirements to reasonably design the structure of parts.

The economic requirement of parts is to manufacture parts that meet technical requirements with lower cost and less labor hours. This has a close relationship with the processability of parts, and to a large extent affects the economic efficiency of machinery.

Measures such as reducing material consumption, using less or no surplus blanks, replacing expensive materials with cheap materials, using high-quality and expensive materials only at key parts of the part, and using standard parts as much as possible can be taken to improve the economy of the part.