| 摘要 |
PROBLEM TO BE SOLVED: To provide a release assembly and a method of forming a drilling tool for rock or overburden drilling.SOLUTION: A release assembly (18) is arranged axially between two drilling tool components (14a, 14b). The release assembly includes a release mechanism allowing an initial axial length (L1) to shorten (Ls) when a joint (15) of the drilling tool components (14) provided with connecting threads (20, 21) is turned in an opening direction (Ro). Here, the release assembly has a decreased second axial length (L2) and the friction force in the joint decreases. |
