The preface rapid development as economy, of shape structure product use more and more general, contain of shape structure product is worn tremendous market business chance and development foreground. According to its the market demand of structural product and technology develop way, the design gives advanced full automatic profiled bar is cut machine, replace original treatment method, will twice improves productivity, this is me research is full automatic profiled bar cuts the import that sends makings orgnaization. In the production of our country and abroad and research, send stuff kind automatically to have a lot of kinds, but in these products, existing a few problems. Like manipulator from transverse (flank) send makings, the structure is complex, assemble, make, maintenance is difficult, the price is high, do not agree with our country profiled bar is cut machine send the demand of makings. Additionally an independent drive can move type conveyer, come through lying between makings orgnaization to carry work book the position, the configuration of a such orgnaizations has limitation, cannot apply at our country profiled bar to cut confidential to beg. In industrial production a lot of workshop use steel structure or light-duty steel structure, and in steel structure workshop in building, of workshop advocate frame and auxiliary frame etc is come by profiled bar framework, dosage is very big, market demand is very high. And in the manufacturing process in profiled bar, the automation standard that its produce equipment still lies a primary level, need is more go finishing artificially. To change this one current situation, according to the manufacturing characteristic of profiled bar, the article uses Xi Menzi firm but the control system that program controller designs forming machine of a kind of profiled bar, use feeling screen to regard as go up a machine through communication cable of the wire that string together a mouth controls PLC and transducer directly, undertake to forming machine of homebred profiled bar automation is transformed. 1, on the rolled steel market with current principle of job of profiled bar forming machine, forming machine of C profiled bar is a roller producible the odd roll into of a variety of norms C finished product aircrew. This machine basically holds work or material rest, entire flat plant, punching unit by passivity, station of device, hydraulic pressure, computer is cut off to control a system to wait for composition after shaping. This machine is used fly automatically curium punching, the operation is handy wait for a characteristic. It is good that the finished product of C profiled bar of roller make friends has forming machine of profiled bar of C of the machine that press tile to pull a turn goodly to press function flatness, full automatic fixed length cut, automatic punching, automation rate is high, installation is quick and convenient, the product can serve as large and medium-sized civil architectural main body gets industry force structure, the roofing that spends canopy like library of workshop, storehouse, engine, hangar, exhibition, cinema, stadium house, market bearings load and wall are smooth prop up. C profiled bar fetterses the working principle that its apply basically is put steel on C profiled bar, after the gyro wheel that drives with reducer is contacted, locking of impaction handle feed, group of oil pump of the electric machinery that start, a powerful person of overflow of high-pressured oily classics that outputs by electric oil pump, place can be adjusted to need pressure in this process, enter get together agglomerate to electro-hydraulic a powerful person, have electro-hydraulic a powerful person and dot change job of switch control oil cylinder, working oil cylinder is advanced, did not produce I-steel and impaction of 3 gyro wheel that prop up bend consideration begins when be out of shape, the length process that oil cylinder advances again is every time 10mm-15mm, advocate electric machinery is turning or invert, by advocate electric machinery drives I-steel to work, operate repeatedly, achieve till place needs. Graph 1 for sketch map of job of profiled bar forming machine. Graph sketch map of job of forming machine of 1 profiled bar 2, system of control of systematic hardware design uses feeling screen and PLC to close suitably, make to a large number of operations of equipment control, moving information is passed come true to feeling screen process designing to give, correspond through serial interface between PLC and feeling screen and even the line concise. If the graph is shown 2 times,control block diagram of construction of system. Graph block diagram of 2 control construction of system 2. 1 hardware choice replaced the hardware of system of traditional and electric control with software as a result of PLC, the design that controls ark installs wiring workload to decrease greatly. The user program of PLC can undertake in the lab imitate is debugged for the most part, shortened application is designed and debug cycle. Maintaining a respect, because the fault rate of PLC is extremely low, maintenance workload is very small; And PLC is had diagnose a function very by force oneself, can go up according to PLC breakdown information of the directive, prove a cause quickly, maintenance is convenient. PLC control system is to signal inputs component (be like: Pushbutton, switch, sensor) , output carries out component (be like: Electromagnetism a powerful person, contactor, signal lamp) form with PLC. Input component receives the input end in PLC, to PLC input command signal and the condition signal of object be accusinged. Output carries out component to catch the output end of PLC, control job of object be accusinged. Control a system to consider a system originally but the PLC of type of module of convenient sex choice of expansibility and maintenance. Choose Xi Menzi S7-200PLC to regard control as unit. 2.
2I/O allocation and the nuclear core that Xi Menzi S7-200 regards exterior wiring as whole control system are divided, it includes to was inputted at 7 o'clock, outputted at 4 o'clock, mix to machine of transducer, punching through these I/O clipping machine undertake controlling, PLC undertakes controlling to transducer through terminal. According to the system the design asks and I/O allocation expresses scale PLC is exterior hookup, if pursue,3 are shown. Graph 3PLC exterior hookup 3, the working way cent of system of software design control is two kinds: Automatic mode (AUTO) use pattern with the hand (MANUAL) . The choice of two kinds of mode can feel the pushbutton on screen to finish through the operation, before type of hand movable mould basically is used at automatic mode to begin debug the job. The condition of the PLC equipment that finish inputs sampling and output control function, main job process moves automatically in the system centrally. 1) roller electromotor starts, photoelectricity detector collects strip steel to shape information, the high speed tally of the PLC that start. 2)PLC collects the pulse number that high speed tally sends, should obtain PLC in-house memory beforehand when the fixed pulse of set is worth, according to order flow the ordinal movement that finish, finish production. 3) when the manufacturing number when set was not finished, PLC program undertakes circular the next time, repeat last time profiled bar produces flow. The feeling screen that this design uses serves as go up a machine, use MCGS is embedded configuration software edits, libraries of a variety of control parts of an apparatus that provide through PLC, graph accuses, the function accuses, configuration gives all sorts of dynamic functions and control function, what realize breakdown is visible. Go up an unit appearance string together through RS232 communication has between mouth and PLC, after using Step7-Micro/Win to weave in lead plane good system control and data collect functional order, download comes in PLC. The program of PLC of man-machine interface drive that MCGS develops moves, monitor and control system of profiled bar forming machine to run a state. 4, conclusion sets forming machine of pair of current home profiled bar to produce a technology to undertake improvement originally, considered to be based on forming machine of PLC pilot profiled bar to control a system, control precision reachs design requirement range. This control system raised the automation rate of profiled bar forming machine greatly, improved punching and cut precision, improved manufacturing efficiency, obtained very good application result. And this system has hardware structure compact, simple, move to be mixed reliably the characteristic of facilitating maintenance. CNC Milling