What is the definition of precision machining? How is it different from rough machining?

May 04, 2025

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Precision machining is defined as an industrial technology that requires extra attention to detail and requires a variety of knowledge, such as measurement, manufacturing and control, to operate accurately. The following table will help you understand the difference between precision machining and rough machining more quickly:

Rough machining

Rough machining can also be called general machining. Compared with precision machining, it requires less precision and is a common machining method in Taiwan. The techniques can be divided into rough turning, rough planing, rough milling, drilling, rough filing, etc., which will leave obvious machining marks. If you want a beautiful product, you will need additional polishing. Rough machining has a wide range of applications. It is not only used in basic assembly parts in the industrial field, but also in screws and nuts sold in places such as hardware stores for people's livelihood consumption.

Precision machining

Precision machining refers to the process of removing materials and finishing on the workpiece while maintaining fine tolerances. Common ones include CNC lathes, grinding, electrical discharge and wire cutting. Since most of them are processed by inputting data into a program, the error is low and a certain production speed can be maintained. In addition, the parts produced through precision machining are highly refined, which not only improves the quality and durability of the products, but also achieves a customized effect, bringing brand recognition to the company.

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