Locking Screw Axial Thread Deformation for Reusability

The patent inverts the conventional deformation direction of thread teeth. Instead of deforming thread teeth counter to the screwing-in direction (as in prior art), the invention deforms them in the screwing-in direction. This inversion prevents plastic deformation during tightening while maintaining the narrowed cross-sectional profile, thereby preserving both the locking function and reusability across multiple screwing processes.

The patent changes the deformation direction parameter from counter to screwing-in direction to screwing-in direction. This parameter change ensures that the deformed thread tooth does not undergo plastic deformation when the screw is tightened, allowing the locking screw to maintain its braking effect and be reused multiple times while still achieving increased frictional connection through the narrowed cross-sectional profile.

The patent applies preliminary deformation to the thread tooth before the screwing process. By pre-narrowing the cross-sectional profile of the thread tooth in the screwing-in direction, the frictional connection is enhanced from the outset. This preliminary action eliminates the need for complex specially designed matrices during production, as the deformation can be achieved through simpler post-threading processes.

The patent applies deformation locally to only the necessary thread tooth or specific regions of the thread, rather than requiring complex global matrix designs. This localized deformation approach narrows the cross-sectional profile where needed to increase frictional connection, while simplifying the overall production process by avoiding the need for specially designed matrices for the entire thread structure.