| 摘要 |
PURPOSE: To detect and measure chatter and to accurately estimate noise energy amount which can occur during roller operation by allowing a mechanoelectrical converter means to convert a fluctuation in diameter of a roller into an electric signal which his a function of the diameter fluctuation. CONSTITUTION: A roller 10 is attached to a spindle 32 which is allowed to rotate in a housing 34. A fluctuation of in-roller diameter around the roller 10 is converted into the wave form having multiple frequencies, and then sent to a signal detector and an amplifier 36. Then, the wave form is sent from the amplifier 36 to a wave form measurement circuit 38, and displayed (40). Then a signal is sent to a frequency analyzer 42, where complex frequency is converted by the amplifier 36 into spike and displayed (44). Then, the spike from the analyzer 42 is sent to a differential circuit 46, and the spike from the analyzer 42 is converted into a plurality of spikes proportional to the actual effect on roller noise. Then, the spike from the circuit 46 is sent to an addition circuit 50, and all spikes are added together electrically and displayed (52).
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