SEWING MACHINE

[Problem] To provide a low-cost sewing machine capable of achieving a desired balance between needle thread consumption and bobbin thread consumption.[Means for Resolution] A memory section 92 stores needle thread requirement data having precorrected needle thread requirement and postcorrected needle thread requirement. In a torque control zone, rotating force is imparted to a turning arm 1281 so as to impart a tension on the needle thread according to a torque value, while closing an upstream grip section main body 1241 and while opening a downstream grip section main body 1261. In a first position control zone, the needle thread is drawn according to the postcorrected needle thread requirement, while opening the upstream grip section main body 1241 and while closing the downstream grip section 1261. In a second position control zone, the turning arm 1281 is returned to an initial position, while closing the upstream grip section main body 1241 and while opening the downstream grip section main body 1261. Further, the precorrected needle thread requirement is compared with needle thread consumption in the torque control zone, to correct the postcorrected needle thread requirement.