Case Study Solutions AccuThreadTM 856 Case Study: Industry: Part: Material: Item: Item: 8201 General Machining NPT Joint Cast Steel TMNK0250-NPT TMNK0500-NPT Allied Machine Solution AccuThreadTM 856 • Cycle time (2 holes) = 3.5 minutes • Recommended speed = 281 SFM Previous Tooling Several Step Tool Process • Cycle time (2 holes) = 5 minutes • Tool life = 70 holes per tap and 50 holes per reamer The Advantages The AccuThread 856 thread mills not only reduced the cycle time, but they also improved the hole quality. • Reduced cycle time by 1.5 minutes (30%) • Increased tool life by over 900 holes with minimal wear The Challenge A custom job shop performs various thread mill applications. They produce a 1/4" and 1/2" NPT joint made from cast steel. They use an Okua HMC with flood

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