4 articles
A comprehensive technical guide to the four primary deep hole drilling methods — gun drilling, BTA (single-tube), ejector (double-tube), and trepanning. Detailed process mechanics, specifications, applications, and a selection decision matrix with cost data.
A comprehensive introduction to deep hole drilling: definition, how it differs from conventional drilling, the three main methods (gun drilling, BTA, ejector), key components, achievable tolerances, and industry applications with technical data.
Compare BTA drilling, gun drilling, and ejector drilling for deep hole applications. Detailed analysis of diameter range, feed rate, surface finish, tolerance, chip evacuation, cost per hole, and selection criteria with manufacturer data.
Complete guide to depth-to-diameter (L/D) ratio in deep hole drilling. Maximum achievable ratios by method, correction factors for speeds and feeds, and practical selection criteria.