| 摘要 |
The invention relates to a ground peg (10) which is made from a steel tube (11) and comprises an upper cylindrical section (12), a lower section (16) that tapers towards the bottom to form a tip (14), and an external thread (26) that extends along at least part of the lower section (16) and is formed from a continuous sheet metal strip (28) welded onto an external surface (32) of the ground peg (10) by means of a continuous or regularly interrupted fillet weld (34). The external thread (26) has a nearly constant pitch (S) and slope (a) relative to a longitudinal axis (40) of the ground peg (10) along the entire length of the external thread (26). The invention further relates to a method for producing such a ground peg. In said method, the external thread (26) is laterally fed to the external surface (32) of the rotating steel tube as an elongate sheet metal strip (28) and is welded onto said external surface (32), the steel tube (11) being moved relative to the feeding point of the sheet metal strip (28) at a regular advance (V) in the longitudinal direction of the steel tube (11). The invention finally relates to a device for producing such a ground peg (10). Said device comprises a mechanism for clamping and rotating the steel tube as well as a mechanism (44) for feeding the sheet metal strip (28) to the external surface (32) of the steel tube (11) such that the sheet metal strip (28) tangentially rests thereagainst. |
