Insert autotaraudeur

Abstract

Abstract 1. Self-tapping insert having an external thread (1), a chamfer (4) at the end of the insert (3), which cuts the external thread (1), and also having notches (5, 10, 12) in the region of the chamfer which form thread-cutting edges which cut an internal thread there in a smooth receiving bore when the insert is tapped, the inset has a bore passing over its entire length having an internal thread (2) and the notches (5, 10, 12) at the front side (7) of the insert end (3) are sealed against the escape of chips into the bore, characterised in that at the front end of the chamfer (4) at least one deformable sealing element (8, 9, 11, 13) is disposed, which seats the notches (5, 10, 12) in the insert direction and the outer edge of which lies on a diameter which is slightly smaller than the external diameter of the external thread (1).

Inventors

• 👤 Bernhard Stöveken

Bibliographic Details