It is a tensioning accessory for tubular device of embroidery machines, belonging to the industrial sector of the components of textile equipment intended to embroider certain areas of articles of clothing, and said tensioning accessory (1) forming a substantially longitudinal rectangular bulkhead (2), affixed through resilient extensions (3) with spring action below and tangentially to the body of the tubular channel (4), creating a spacer gap (5), which can be adjusted according to the necessary tension/stretch to be applied to the type of fabric/garment to be embroidered, adding a functional process for tubular pieces in which only the lining is subjected to tension when pulled, and not the material or article to be embroidered, allowing the application of embroidery in elastic, flexible, fragile and delicate materials.

A sewing machine that sews an embroidery pattern on a sewing object includes an embroidery frame horizontally moving along a direction which a frame surface extends, a needle bar supporting a needle for inserting a thread, and reciprocally moving toward an internal space of the embroidery frame, a memory unit storing image data of the embroidery frame, and embroidery data of the embroidery pattern, and a display unit displaying an image of the embroidery frame, an image of the embroidery pattern within the image of the embroidery frame, and a feature point with a positional relation between the embroidery pattern, and the embroidery frame when actually sewn in accordance with the embroidery data.

A sewing machine that sews an embroidery pattern on a sewing object includes an embroidery frame horizontally moving along a direction which a frame surface extends, a needle bar supporting a needle for inserting a thread, and reciprocally moving toward an internal space of the embroidery frame, a memory unit storing image data of the embroidery frame, and embroidery data of the embroidery pattern, and a display unit displaying an image of the embroidery frame, an image of the embroidery pattern within the image of the embroidery frame, and a feature point with a positional relation between the embroidery pattern, and the embroidery frame when actually sewn in accordance with the embroidery data.

A sewing machine includes a sewing portion, a movement portion, a processor and a memory. The memory is configured to store computer-readable instructions that, when executed by the processor, instruct the processor to perform processes. The processes include acquiring pattern data indicating positions of a plurality of needle drop points to sew a pattern, acquiring a position of a sewing start point of the pattern, performing first correction, performing second correction that uses the acquired position of the sewing start point as a base point, and corrects the pattern data, by changing, by an acquired change amount, the positions of the plurality of needle drop points represented by the pattern data corrected by the first correction, and controlling the sewing portion and the movement portion and sewing the pattern on the sewing object, in accordance with the pattern data corrected by the second correction.

A sewing machine includes a sewing portion, a movement portion, a processor and a memory. The memory is configured to store computer-readable instructions that, when executed by the processor, instruct the processor to perform processes. The processes include acquiring pattern data indicating positions of a plurality of needle drop points to sew a pattern, acquiring a position of a sewing start point of the pattern, performing first correction, performing second correction that uses the acquired position of the sewing start point as a base point, and corrects the pattern data, by changing, by an acquired change amount, the positions of the plurality of needle drop points represented by the pattern data corrected by the first correction, and controlling the sewing portion and the movement portion and sewing the pattern on the sewing object, in accordance with the pattern data corrected by the second correction.

Provided is a sewing machine that enables a user to grasp the position of an interested point that is present inside and outside a stitchwork pattern without relying upon the user's imagination. This sewing machine includes an operation screen that displays, in a screen region, a frame image and a stitchwork image, and receives a user input of an interested point within a stitchwork frame displayed in the screen region. Moreover, the stitchwork frame is horizontally moved until a needle points out a point within the stitchwork frame and corresponding to the interested point input using the operation screen.

Provided is a sewing machine that enables a user to grasp the position of an interested point that is present inside and outside a stitchwork pattern without relying upon the user's imagination. This sewing machine includes an operation screen that displays, in a screen region, a frame image and a stitchwork image, and receives a user input of an interested point within a stitchwork frame displayed in the screen region. Moreover, the stitchwork frame is horizontally moved until a needle points out a point within the stitchwork frame and corresponding to the interested point input using the operation screen.

A method of generating an image that shows an embroidery area in an embroidery frame for computerized embroidery includes: acquiring a first image of a calibration board that has multiple feature points forming a contour approximating an embroidery area defined by the embroidery frame; identifying the feature points of the calibration board in the first image to acquire multiple graphical feature points; acquiring a geometric curved surface that fits the graphical feature points and that includes multiple curved surface points; acquiring a second image in which the embroidery area of the embroidery frame is shown; and performing image correction on the second image based on the geometric curved surface to generate a corrected image.

A method of generating an image that shows an embroidery area in an embroidery frame for computerized embroidery includes: acquiring a first image of a calibration board that has multiple feature points forming a contour approximating an embroidery area defined by the embroidery frame; identifying the feature points of the calibration board in the first image to acquire multiple graphical feature points; acquiring a geometric curved surface that fits the graphical feature points and that includes multiple curved surface points; acquiring a second image in which the embroidery area of the embroidery frame is shown; and performing image correction on the second image based on the geometric curved surface to generate a corrected image.

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.