Case Study Solutions Opening Drill® Case Study: Industry: Part: Material: Holder: Insert: Depth: Diameter: 6510 Marine/Shipbuilding Swing Arm Assembly A36 Structural Steel 3.000" 3.0" OP-05T308 OP3-1S-SS1.5 Allied Machine Solution Opening Drill® • 716 RPM • 600 SFM • 0.0045 IPR • 3.22 IPM • Cycle time = 56 seconds • Tool life = 100 holes Previous Tooling 2 Tool Process Komet Indexable Drill • 636 RPM • 500 SFM • 0.004 IPR • 2.54 IPM • Cycle time = 1 minute and 11 seconds • Tool life = 75 holes Ingersoll Indexable Roughing Mill • Opened the hole to 3.2” The Advantages The Opening Drill successfully in reduced the cycle time and lowered the overall cost of production. • Reduced cycle time by 22.5% • Cost per hole savings = $2.14 • Overall

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