Emuge Punch Tap technology, also called helical cold-forming of threads, constitutes the fourth method for the production of internal threads besides tapping, cold-forming of threads, and thread milling. This patented method was developed in cooperation between Audi AG and Emuge and is now available in North America.
The Punch Tap was developed to significantly reduce the cycle time associated with threading aluminum castings. Emuge not only created a new type of tool for helical thread-forming but also a completely new technology for machining threads. Thanks to entirely new kinematics with a significantly shorter tool path, the new process produces internal threads at a reduced energy consumption and is faster by approximately 75 percent compared to the conventional threading technology. See this new technology in action at IMTS 2018, Booth 431536.
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