Process Difficulties and Key Technical Points for Bailey Bridges

Chip Evacuation Issues: The biggest challenge in deep hole drilling. A combination of optimized gun drill geometry, matched high-pressure coolant, and reasonable chip-breaking cutting parameters must be relied upon to form stable, continuous C-shaped chips and ensure smooth evacuation.

Tool Wear and Life Management: Gun drills are expensive. It is necessary to monitor wear, establish a scientific tool change cycle, and balance processing costs with quality risks.

Drill Deflection Problem: Caused by multiple factors such as machine tool accuracy, fixture rigidity, initial workpiece positioning, and tool guiding. Comprehensive assurance must be provided from the rigidity of the process system.

Thermal Deformation Control: Especially when machining multiple holes in long-sized components, local deformation caused by cutting heat must be considered. The drilling sequence and cooling should be arranged reasonably.