Abstract: A method for manufacturing a thread-forming screw having a shank and a thread formed in one piece with the shank and region-wise circumferentially arranged on the shank, is disclosed. After the formation of the thread on the shank, a plurality of recesses is subsequently stamped into the thread. Then, a plurality of compact cutting elements is welded into the recesses in the thread, where the cutting elements are made of a hard material and have a hardness greater than the hardness of the thread. Additionally, a stamping device for carrying out the method is also disclosed.

Abstract: A screw (11) includes at least one thread (21) arranged on the screw shaft (12); circumferentially surrounding the shaft (12) at least in some regions, and having a thread pilot (22) located in the free region (15) of the shaft (12) and a plurality of recesses (31) provided in the thread (21) and opening radially outwardly, with the recesses (31) each having a first limiting wall (32) adjacent to the thread pilot (22) and a second limiting wall (33) remote from the thread pilot (22), and a plurality of cutting bodies (26) formed of a material having a hardness greater than a hardness of the thread, located in the recesses (31) formed in the thread (21) and having each a longitudinal axis (27) and an outer surface (28) surrounding the axis (27) at a distance therefrom, with the recesses (31) each having a bearing section (34) with a plurality of generatrices extending substantially along a course of the thread (21) for receiving, at least in some regions, the outer surface (28) of a respective cutting body (26

Abstract: A method for manufacturing a thread-forming screw having a shank and a thread formed in one piece with the shank and region-wise circumferentially arranged on the shank, is disclosed. After the formation of the thread on the shank, a plurality of recesses is subsequently stamped into the thread. Then, a plurality of compact cutting elements is welded into the recesses in the thread, where the cutting elements are made of a hard material and have a hardness greater than the hardness of the thread. Additionally, a stamping device for carrying out the method is also disclosed.

Abstract: A screw (11) includes at least one thread (21) arranged on the screw shaft (12); circumferentially surrounding the shaft (12) at least in some regions, and having a thread pilot (22) located in the free region (15) of the shaft (12) and a plurality of recesses (31) provided in the thread (21) and opening radially outwardly, with the recesses (31) each having a first limiting wall (32) adjacent to the thread pilot (22) and a second limiting wall (33) remote from the thread pilot (22), and a plurality of cutting bodies (26) formed of a material having a hardness greater than a hardness of the thread, located in the recesses (31) formed in the thread (21) and having each a longitudinal axis (27) and an outer surface (28) surrounding the axis (27) at a distance therefrom, with the recesses (31) each having a flat bearing section (34) with a plurality of generatices extending substantially along a course of the thread (21) for receiving, at least in some regions, the outer surface (28) of a respective cutting body