| 摘要 |
PROBLEM TO BE SOLVED: To easily analyze a working pattern of an operator by recognizing the driving time of a sewing machine for each rotation speed. SOLUTION: The sewing recorder of the sewing machine includes: rotation speed measuring means 29 for measuring the rotation speed of a sewing machine main shaft; cumulative time calculation means 30 for accumulating a time during which the measured rotation speeds exceed reference rotation speeds, for each of the plurality of reference rotation speeds set beforehand, and calculating the cumulative times for the respective reference rotation speed; cumulative data preparation means 31 for preparing cumulative data for associating the plurality of reference rotation speeds with the calculated cumulative times; and cumulative data display means 41 for displaying the cumulative data. COPYRIGHT: (C)2009,JPO&INPIT
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