Case Study Solutions Opening Drill® Case Study: Industry: Part: Material: Item: Depth: Diameter: 6509 Heavy Equiptment Staked Plates A36 101.7 mm 78 mm OP3-1S-CV50 Allied Machine Solution Opening Drill® • 288 RPM • 300 SFM • 0.006 IPR • Tool life = 30 minutes of cut time • Cycle time = 2 minutes and 18 seconds Previous Tooling Kennametal Twin Head Boring Bars (2 passes) • 528 and 790 RPM • 430 and 715 SFM • 0.015 and 0.012 IPR • Insert life = approximately 20 minutes • Cycle time = 4 minutes The Advantages The Opening Drills effectively reduced cycle time and increased tool life, accomplishing the customer’s goals for this operation. • Machine time savings = 42.5% ($200/hr) • Increased tool life by 50% The Challenge The customer manufactures steel lift arms for the heavy eq

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