B - Operations – Transporting – 30 – B
Patent
B - Operations, Transporting
30
B
B30B 15/00 (2006.01) B21D 28/20 (2006.01)
Patent
CA 2080870
Abstract of the Disclosure A method and apparatus for controlling punch press noise in which the noise level produced is monitored by a detector and the press ram velocity is modified in real time to keep the noise level within preset limits. a time weighted average noise level is also controlled by varying the ram velocity for punching operations over a period of operation to maintain a projected time weighted average within a preset limit.
Hunter James R.
Schorn Gerard J.
Macrae & Co.
Murata Machinery Limited
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