1. Basic concept of indexable tool

An indexable tool is a tool that clamps a pre-processed polygonal insert with several cutting edges on the tool body by mechanical clamping. When a cutting edge is blunt during use, just 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 clamping

2. Compared with welded tools and integral tools, indexable tools have two characteristics

1) The insert installed on the cutter body has at least two pre-processed cutting edges for use. (Individual special blades cannot be indexed and can only be replaced, such as ball-end blades)

2) The position of the cutting edge on the cutter body remains unchanged after the insert is indexed, and has the same geometric parameters

3. Compared with welded cutting tools, indexable inserts have the following characteristics

1) The blade becomes an independent functional element, and its cutting performance is expanded and improved;

2) The mechanical clamping type avoids the influence and limitation of the welding process, which is more conducive to selecting blades of various materials according to the processing object, and fully exerts its cutting performance, thereby improving the cutting efficiency;

3) The spatial position of the cutting edge is fixed relative to the cutter body, which saves the auxiliary time required for tool changing and tool setting, and improves the utilization rate of the machine tool.

4) 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 it is economical. The development of indexable cutting tools has greatly promoted the progress of cutting tool technology, and at the same time, the specialized and standardized production of indexable cutting tools has promoted the development of the manufacturing process of cutting tools.