Patent ID: 7971543
Filing Date: 2011-07-05
Classification: D05B,D05C

Abstract:
1. A sewing machine comprising: a needle bar; a needle bar vertical movement mechanism that vertically moves the needle bar; a sewing machine motor that drives the needle bar vertical movement mechanism; an embroidery frame that holds a work cloth; an embroidery frame movement mechanism that moves the embroidery frame; an operation device including an operation member to be operated by a user, the operation device outputting an output signal corresponding to at least an operation state of the operation member, the operation member being an object that is freely-movable in at least two dimensions, and a change in the operation state corresponding to a movement of the operation member within the at least two dimensions; a movement determination device that determines a movement direction and a movement distance of the embroidery frame based on the output signal outputted by the operation device; an embroidery frame movement mechanism control device that drives the embroidery frame movement mechanism to move the embroidery frame according to the movement direction and the movement distance of the embroidery frame determined by the movement determination device; a sewing machine motor control device that controls a rotation speed of the sewing machine motor based on the output signal outputted from the operation device, the embroidery frame movement mechanism and the sewing machine motor being driven in synchronization to form a stitch on the work cloth held by the embroidery frame; and a movement magnification setting device that sets a correlation between the output signal and the movement distance of the embroidery frame as a movement magnification, wherein the movement determination device determines the movement direction and the movement distance of the embroidery frame based on the output signal outputted from the operation device and the movement magnification set by the movement magnification setting device.