PCD countersink drills are ultra-hard cutting tools featuring a high-strength alloy steel body and a welded polycrystalline diamond (PCD) cutting edge. They are widely used for machining countersunk holes, chamfers, and precision countersinking, especially in aerospace and new energy vehicle manufacturing.
These tools excel in processing challenging materials such as carbon fiber composites and aluminum alloys, offering superior wear resistance, high-precision guidance, and efficient composite machining performance.
PCD Countersink Drills' Features & Design
1. Robust Base Material
The tool body is made from high-strength alloy steel, heat-treated to achieve a hardness of HRC 45–50. This ensures excellent impact resistance and stability. The front end can be customized with various angles and guide columns, featuring a pre-drilled hole with a tolerance of ≤ 0.02 mm, ensuring coaxiality and minimizing vibration.
2. Ultra-Hard PCD Cutting Edge
The cutting edge is made of a PCD blank with a diamond content ≥ 85% and a hardness of up to 8000 HV. It offers 8–12 times the wear resistance of conventional carbide tools, making it ideal for abrasive materials like carbon fiber.
3. Customized Edge Geometry
Cutting edges can be designed with specific angles to meet customer requirements. The combination of extreme hardness, sharpness, and a low friction coefficient effectively prevents carbon fiber delamination and aluminum adhesion.
PCD Countersink Drills' Angles & Applications
- 45° Three-Edge Structure: Designed for laminated carbon fiber processing, reduces delamination and improves chip evacuation by 30%.
- 90°: The most versatile option, suitable for chamfering most metals and composites, offering a balance of stability and cost-effectiveness.
- 100°: The aviation industry standard, ideal for rivet holes in Airbus and other major aircraft models.
- 120°/130°: Compatible with American standard countersunk screws (AN/MS), commonly used in automotive chassis and aerospace structures.
- Custom Angles: Such as 60° and 82°, available with specialized tooling.
PCD Countersink Drills' Industry Applications
Aerospace
PCD countersink drills are commonly used in aerospace manufacturing for countersinking holes in carbon fiber skin wings, fuselages, spoilers, and rivet holes in critical components. They meet strict requirements for surface finish, precision, and tight tolerances.
New Energy Vehicles
These tools are used to machine countersunk holes and chamfers in battery packs and module housings, ensuring secure fastening with rivets or bolts. This enhances connection reliability, sealing, and protection, safeguarding internal battery components from external environmental factors.
Customization Options
We offer standard PCD countersink drills in 90°, 100°, and 120° angles, as well as non-standard imperial or U.S. custom angles. Additional options include extended-reach, stepped, and three-edge PCD countersink drills.
Contact us today to discuss your specific machining needs and receive professional tooling solutions.
