In a sewing machine, an arm includes, on one side thereof in a first direction, a head. A needle bar is disposed at the head to reciprocally move in a second direction. A feed mechanism feeds a workpiece from one side toward the other side of the head in a third direction. The projection unit disposed at the head projects a projection image toward a bed. The projection unit includes an emitter for projecting image light of the projection image. The photographing unit disposed at the head captures a photographing target. The photographing unit includes an incident portion on which light reflected by the photographing target is incident. The emitter and the incident portion are disposed further toward the one side of the arm in the first direction than the needle bar, and further toward the one side of the head in the third direction than the needle bar.

A sewing machine sews a sewing pattern on a work cloth. The sewing machine includes a storage portion configured to store pattern data used for sewing the sewing pattern on the work cloth, and a projector configured to project an image. The sewing machine generates, on the basis of the pattern data, a projection image that includes a pattern object and a peripheral object. The pattern object represents the sewing pattern. The peripheral object is disposed adjacent to an outer edge of the pattern object and surrounds the pattern object. The sewing machine controls the projector and projecting the generated projection image toward a top surface of a bed portion on which the work cloth is placed.

A sewing machine includes a sewing pitch setup unit configured to set up a given sewing pitch; a movement detection unit configured to detect a movement of a material to be sewn; a control unit configured to calculate a movement speed of the material on the basis of a movement amount of the material detected by the movement detection unit and to calculate a rotational rate for a sewing machine motor for operating a needle on the basis of the movement speed and the given sewing pitch; and an informing component configured to inform of magnitude of the rotational rate relative to a maximum rotational rate for the sewing machine motor.

The invention discloses an embroidery machine and a thread clamping device, including an embroidery machine body, a machine head, an embroidery frame, and a thread clamping device on the embroidery machine body. The thread clamping device comprises a thread clamping device mounting seat, corresponding thread regulator components, and functional buttons, or indicator lights and functional buttons in the functional area, for controlling the embroidery frame or/and the machine head on the thread clamping device mounting seat. As the thread clamping device is typically positioned above the machine head in a corresponding configuration, the embroidery frame and machine head can be controlled and adjusted via functional buttons on the thread clamping device corresponding to the machine head during embroidery machine operation observation. The invention simplifies operation, alleviates operator burden, and enhances work efficiency. With a simple structure and ease of use, the invention boasts high practical value and broad market prospects.

A sewing machine includes a bed including a bed surface, a needle bar, a presser bar, a projector, and a controller. A movement detector is attachable to the presser bar. The controller is configured to perform a sewing control of, in a state where the movement detector is attached to the presser bar, controlling an up-down reciprocating speed of the needle bar based on a signal output from the movement detector. The signal corresponds to a movement amount of a sewing workpiece located in a detection region. The controller is configured to perform a projection of, during performing the sewing control, controlling the projector to project an image toward the bed surface.