Indexable inserts for milling

Cutting inserts (or cutting blades) are indexable/replaceable cutting tools used in the machining of metals, plastics and other materials. They are most commonly used in lathes, milling machines, drilling machines and other machine tools. Indexable cutting inserts offer a major advantage over other cutting tools. When one edge is worn, the insert rotates to a sharp edge. This eliminates the need for sharpening. They are designed to provide high precision and efficiency in cutting, and can be easily replaced, reducing downtime in production.

Typical Features:
1. Material: They are usually made of carbide, ceramic, CBN (cubic boron nitride) or PKD (polycrystalline diamond).
2. Shapes: They can have different shapes, such as triangular, square, circular or diamond, with the shape affecting stability and application.
3. Coatings: The surface of the cutting inserts is often coated with thin layers of nitrides, carbides or oxides to increase resistance to wear, heat and oxidation.
4. Clamping: The inserts are fixed in the holders using screws, wedges or springs, which allows them to be easily replaced.

Advantages:
• Efficiency: They allow fast machining and reduce maintenance time.
• Accuracy: They provide consistent machining quality.
• Versatility: They can be used on a variety of materials and applications.

Applications:
• Turning: For longitudinal, face or thread turning.
• Milling: For example for face milling or flute milling.
• Drilling: When used on special drilling heads.

Indexable insert standard

To avoid making wrong decisions, indexable inserts are covered by an international standard. This ISO standard specifies the size, shape, clamping, material properties and coating. Based on the ISO designation for indexable inserts, the operator can select the appropriate indexable insert for a specific type of machining.

The ISO code can be up to twelve digits long. The first and seventh digits are mandatory. The eighth and ninth digits indicate optional data that is used as required. The tenth to twelfth digits represent optional data from the manufacturer and are located after the ISO code, separated by a dash.

  

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