helical milling การใช้

• Although the first thoughts that come to mind for most machinists regarding threading are of thread " cutting " processes ( such as tapping, single-pointing, or helical milling ), Smid points out that, when plastic bottles for food, beverages, personal care products, and other consumer products are considered, it is actually plastic molding that is the principal method ( by sheer volume ) of thread generation in manufacturing today.