| 摘要 |
PURPOSE:To discriminate the presence or absence of any gouge on each gear from the magnitude in the dded output by intermeshing all multishaft intermeshing gear trains, rotating the same, detecting oscillation signals, extracting gouge signals and adding the gouge signals in synchronization respectively with the reference signals for the respective shafts. CONSTITUTION:The oscillation signal A for the entire part is inputted to a gouge signal extracting part 50, which outputs a gouge signal E. The signal E is inputted to each of adders 61-63. On the other hand, reference signals B-D are inputted respectively separately to the adders 61-63, by which all the gouge signals are subjected to addition in synchronization with the respectively separate reference signals. The added output from the adder to which the reference point signal of the gouged gear is applied has an extremly large increase rate than the added outputs from the other adders. If, therefore, the added output in a specified time is compared with a prescribed level value and whether the value exceeds the same or not is identified, the presence or absence of the gouge is known. If the generating source for the reference point signal applied to the adder exceeding the level value is investigated, it is knwon that the gear attached to such shaft is the gouged gear.
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