Sleeve for a drilling insert and method for manufacturing the same
The drill bit assembly with a separately mounted sleeve featuring helically wrapped lands and flutes addresses inefficiencies in energy transfer and fracture risk, enhancing drilling efficiency and durability in hard materials.
Patent Information
- Application Number
- PCT/US2025/045661
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-07-14
- Filing Date
- 2025-09-10
- Publication Date
- 2026-03-19
AI Technical Summary
Existing drill bit assemblies face inefficiencies in energy transfer and increased risk of fracture due to the inclusion of a sleeve that attenuates impact energy and is prone to stress, particularly when used for drilling hard materials like concrete with rebar.
A drill bit assembly design featuring a sleeve that is separately mounted on the drilling insert, with multiple segments secured together and helically wrapped lands forming flutes, allowing for efficient energy transfer and reduced stress by minimizing the mass through which impacts propagate.
The design enhances energy transfer efficiency and extends the lifespan of the sleeve and flutes by providing a direct path for impacts, reducing stress and fracture risk, thereby improving drilling performance in hard materials.