Grooving / Threading / Cut-Off | Cutting Tools - grooving insert specification

Although some threading inserts have only one cutting surface, others have multiple cutters so that work can be moved to a sharp tooth when one tooth wears out. The number of sides and cutting angles are determined by the shape of the threading insert. Circular threading inserts, also known as round or circular threading inserts, are circular devices used in button mills and radius groove turning. Some are adjustable so that unused edge portions can be used once a portion of the edge is worn. Thread cutting diamond-shaped threading inserts have four sides and two acute angles. Triangular threading inserts have three equal sides and three tips, each with a 60° included angle. They are used with indexable machines, just like other multi-toothed products. Trigon threading inserts have a triangular shape that has been modified. These cutters have bowed sides or intermediate angles on the sides to allow for higher included angles at the tips. Square threading inserts have cutting tips that are square in shape and have four equal sides. They are used for thread cutting precision. Threading inserts with two long sides and two short sides are known as rectangular threading inserts. They are used for grooving operations where the cutting edge is located on the short sides. Parallelogram threading inserts and rhombic threading inserts are both four-sided inserts with an angle on the sides for cutting point clearance. Pentagon threading inserts have five equal sides and angles for different types of thread cutting. Hexagonal or hex threading inserts have six sides. Octagonal threading inserts have eight sides and are typically indexable for complex cutting operations. Ball nose, radius tip, and chamfer tip mills are examples of threading inserts. Dogbone threading inserts are also available. These two-edged inserts have a narrow mounting center and a broader cutting feature on both ends, as the name implies. They are frequently used for grooving.