| 摘要 |
A sewing record unit of a sewing machine based on sewing time and rotation speed of a main shaft is provided to analyze an operation pattern of an operator easily and to recognize driving time of the sewing machine conveniently. A sewing record unit of a sewing machine comprises the followings: measuring unit of rotation speed measuring rotation speed of a main shaft; a measuring unit(30) of accumulating time; a drawing up unit(31) of the total data corresponding to the total time and a plurality of reference rotation speed; and a displaying unit(41) displaying the total data.
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