An indexable blades is a blade that clamps a pre-processed polygonal insert with several cutting edges on the tool body by mechanical clamping. When a cutting edge becomes blunt during use, you only need to loosen the clamping of the blade and then index or replace the blade so that the new cutting edge enters the working position, and then it can continue to be used after being clamped. Due to the high cutting efficiency and less auxiliary time of the indexable tool, the work efficiency is improved, and the cutter body of the indexable tool can be reused, which saves steel and manufacturing costs, so its economy is good. The development of indexable cutting blades has greatly promoted the progress of cutting tool technology, and at the same time, the specialized and standardized production of indexable cutting blades has promoted the development of the manufacturing process of cutting blades.