DEEP HOLE DRILLING & BORING
Deep Hole Drilling
Deep hole drilling is a method designed to achieve depth-to-diameter ratios of 10:1 or greater. Specialized deep hole drilling machines and tools, like gundrills or BTA (Boring and Trepanning Association) drills, are used to ensure precision and accuracy at such depths. Deep hole drilling allows for:
- High-accuracy hole creation with minimal deviation along the length.
- Improved surface finish, often eliminating the need for secondary processes.
- Efficient chip evacuation through high-pressure coolant flow, preventing clogging and heat build-up.
Deep Hole Boring
Deep hole boring is typically employed to enlarge or finish existing holes with high precision. It’s used when the hole diameter needs to be increased or refined with exacting tolerances and surface finishes. Unlike deep hole drilling, which creates the initial hole, boring is used for:
- Increasing diameter accuracy and improving roundness.
- Enhancing surface finish to achieve a smooth, polished result.
- Achieving precise dimensional control, often with multiple passes for quality and accuracy.
These methods are crucial in producing parts where performance and reliability depend on precision-engineered holes, such as hydraulic cylinders, firearm barrels, oil drilling equipment, and engine blocks.