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BUTTONHOLE SEWING MACHINE FOR MAKING BUTTONHOLE SEAM HAVING SEAM END SECTION OF VARIOUS SHAPES IN WORK PIECE HAVING EFFECTS OF ALLOWING BUTTONHOLE PARAMETERS TO BE USED AS MIRROR-REVERSION TYPE BUTTONHOLE, PROGRAM CONVERSION TO BE QUICKLY AND EASILY ACHIEVED, MACHINE SHUTDOWN AND ERRORS CAUSED BY WRONG PROGRAMMING TO BE REMARKABLY REDUCED
BUTTONHOLE SEWING MACHINE FOR MAKING BUTTONHOLE SEAM HAVING SEAM END SECTION OF VARIOUS SHAPES IN WORK PIECE HAVING EFFECTS OF ALLOWING BUTTONHOLE PARAMETERS TO BE USED AS MIRROR-REVERSION TYPE BUTTONHOLE, PROGRAM CONVERSION TO BE QUICKLY AND EASILY ACHIEVED, MACHINE SHUTDOWN AND ERRORS CAUSED BY WRONG PROGRAMMING TO BE REMARKABLY REDUCED
PURPOSE: A buttonhole sewing machine for making a buttonhole seam having a seam end section of various shapes in a work piece is provided. It allows buttonhole parameters to be used as a mirror-reversion type buttonhole, program conversion to be quickly and easily achieved, machine shutdown and errors caused by wrong programming to be remarkably reduced, thus achieving high operational reliability. CONSTITUTION: The buttonhole sewing machine comprises: a base plate(1), an upper arm(2), and a standard(3) for coupling the base plate and arm; a needle bar(7) with a needle(8) disposed within the arm to be reciprocatingly driven in z directions by a driving motor(5); a table capable of being displaceable in y directions by a y driving motor(18); a work piece clamp(21) for clamping a work piece on the table; a driving motor(14) for producing a motion of an x direction; and a control system for controlling the driving motor(5,14,18). The control system contains: input equipment for feeding buttonhole parameters; and a computer for calculating sewing data that determine the respective buttonhole geometry from the buttonhole parameters, a memory for storing the computed sewing data and a key to be shifted into two key statuses.
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