Method for controlling electronic pattern machine to perform multiple sewing

Abstract

The invention discloses a method for controlling an electronic pattern machine to perform multiple sewing. The method includes the steps that first, key point data in pattern data are established, then, multiple sewing key point data are generated by the key point data, uniform discretization is performed on every segment of basic geometric figure by the multiple sewing key point data, and relative coordinates of pattern points obtained after every segment is subjected to uniform discretization are combined in sequence to generate pattern data; finally, a multiple sewing pattern data file is established by the multiple sewing key point data, the pattern data and a header file, the obtained pattern data file is stored into an electronic control system of the electronic pattern machine, and the electronic control system of the electronic pattern machine controls an X-axis stepping motor and a Y-axis steeping motor to be matched with a spindle servo motor to operate and sew designed patterns according to the pattern data file. The method is high in universality, all types of polygonal multiple sewing problems can be solved, and the method can be used for CNC machine tool cutter feeding path planning.

Description

technical field [0001] The invention relates to a method for controlling an electronic pattern machine to perform multiple seams. Background technique [0002] The electronic pattern machine is an industrial sewing machine with three axes working together. The three axes are the main axis Z that controls the up and down reciprocating movement of the needle and the XY axis that controls the front, back, left, and right movements of the cloth frame in the horizontal plane. During the sewing process, the main shaft reciprocates in the vertical direction at a constant speed according to the set speed: the needle moves from the highest point to the entry point where the needle is about to penetrate the fabric, to the lowest point of the needle, and then to the exit point where the needle just leaves the fabric , and finally reach the highest point. The process of the needle from the cloth exit point to the highest point and then to the cloth entry point is the time period for th...

AI Technical Summary

Problems solved by technology

But in practice it will never be figure 1 In the simple case shown in , there may be a polyline or polygon composed of multiple straight line segments connected end to end, or even a smooth opening or closed curve passing through several points. The above method is not competent, and a special method must be used Basic pattern information and multiple seam control information to automatically generate multiple seam patterns

like figure 2 As shown, the traditional method has a fatal shortcoming that it cannot generate multiple seam key points of concave polygons, which cannot cover all situations, and has great limitations.

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