CNC-CONTROLLED BUTTON HOLE SEWING MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a general type button hole sewing machine wherein the adjustment of an expanding width by an operator can be easily performed by a simple means. SOLUTION: This button hole sewing machine is equipped with a work clamp having a displacement-driving part (44) which is operated by an air pressure for making the work clamp displace from an initial position of the expanding width to the final position of the expanding width by the length of the expanding width from each other. Only a first work clamp can be displaced with respect to an x-y table (8). The displacement of the first work clamp is limited to an interval between the two stop positions. A control unit (62) stores data for triggering an x driving part (9) in such a manner that the x-y table (8) may be reverse-displaced by one half of the expanding width (d) of a specified length. COPYRIGHT: (C)2004,JPO