Research On The Open CNC System Of Shirt Sleeve Slit Sewing Machine Based On TwinCAT

Shirt sleeve slit stitching has been one of the most basic garment sewing processbut also the most complex one, at present only a few companies abroad has developedautomatic CNC sleeve vents hem machine which takes numerical control technologyas core. Therefore do researches on numerical control system of sleeve hem machine’skey part is rather meaningful.With the high development of numerical control technology and technologiesrelated with numerical control are getting perfect; the openness of CNC system hasbeen higher and higher. Open numerical control system has dealt with sealingproblems of traditional CNC system by its advantages such as openness, popularity,high compatibility and so on; Now open CNC system is very applicable for advancedindustrial automatic manufacture, and has already become the development directionof future CNC system.This paper analyzed the three control schemes of open CNC system, and finallytakes IPC platform and combines PROFIBUS filedbus software control scheme.Using German BECKHOFF company’s TwinCAT industrial control software todevelop the sewing CNC system of sleeve hem machine.Firstly, it analyzed the sleeve hem machine working principle and mechanicalstructure, and select system hardware on basis of that; Combining with filedbustechnology to put up the CNC system hardware platform.Then, according to sleeve hem machine’s function character and systemhardware platform, adopting the modular design idea on the CNC system, dividing thesystem functional modular into PC management software and programming ofsinglechip control software.Next, to develop the singlechip control software on basis of TwinCAT controlplatform, it mainly contains compilation of soft PLC program, configuration andallocation of the system, and realizes the function of control system software.Finally, using VC++to develop the PC program of CNC system. According tothe ADS-DLL interface supplied by TwinCAT to realize the communication withVC++, design the main function modular of PC, and preliminary design theman-machine interface which conform to requirements related to the system.