| 摘要 |
A slug float detecting device comprising: a proximity member affixed on a stripper plate of press; an eddy-current sensor affixed on a lower die to measure clearance t for each increment of a crank angle; a memory device for storing a stripper motion that represents the relation between clearance t and the crank angle; and a calculating means for comparing the strip motion stored in the memory means with the stripper motion of the current stroke to detect a change, thus issuing abnormality warning signal to the press when said change is out of a specified range.
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