Be based on PC and sheet piece the machine of laser beam machining of machine controls a system

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  • source:SEENER CNC Machining
Technology of 1 foreword laser beam machining can be divided by application solder for Laser Cutting, laser, laser heat treatment. It already was in the industry such as car, electron, electric equipment, aviation, spaceflight, mechanical, metallurgy, the sources of energy, traffic receive wide application, compare with photograph of groovy processing technique, laser beam machining puts in the advantage that be as follows: (1) because it is,machine without the contact, and high-energy quantity surges the energy of beam of light and its shift rate all adjustable, because this can achieve the goal of a variety of treatment; (2) it can is opposite a variety of metals, metalloid treatment, can process the data of tall hardness, tall brittleness, high melting point especially; (3) do not have in process of laser beam machining " cutting tool " wear away, without " cutting force " action at workpiece; (4) in process of laser beam machining, stimulate density of energy of beam of light tall, treatment rate is rapid, and be local treatment, affect minimum to be not laser illuminate place, area of its heat influence is accordingly small, workpiece is out of shape small, follow-up treatment amount is small; (5) because stimulate beam of light to direct easily, cooperate extremely easily with numerical control system, undertake machining to intricate work, because this is a kind of very agile treatment method; (6) use laser beam machining, manufacturing efficiency is tall, quality is reliable, economic benefits is good. But machine of existing laser beam machining adopts mechanical speed change more or veneer machine undertakes controlling, existing to operate multifarious, control difficulty of drab, process designing, process is saved not easily, not intuitionistic wait for defect, cannot get used to the use requirement of laser technology, accordingly we were developed muti_function the personal computer of machine of laser beam machining controls a system. This system uses principal and subordinate distributed control, the PC regards main control as unit, 51 set are single a machine as from control unit. Control a system to go up namely a machine for the PC, issue a machine to be sheet piece engine system. 2 systems composition and working principle 2.

Principle of 1 system hardware pursues 1 in the PC gallops all readily for configuration 2 generation 586 personal computer, include VGA colour to show, general clavier, hard disk of a 20G, 128M memory. Consider to there is multinomial job to need to be carried out at the same time in this system, choose distributed control way consequently, use PC and 8031 one sheet piece actuator of engine distributinging control. 2.

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1The function of the PC regards main control as unit PC, its are main function: (1) treatment of the information that finish. Include those who process information to lose a person, revise, shrink put, the control information that and change message of treatment of editorial graph, Chinese character into systematic place needs. (2) the machines orbit immediately indication in the open loop imitate of information of the treatment that finish shows and machining a process. 2.

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2 8031 is odd the function of a machine serves as from control unit 8031 sheet piece machine, main function: (1) the control information that accepts main control unit to generate, its translate into pace takes the electric pulse that electric machinery place needs, the frequency character of pulse and the demand that take sky comparing to satisfy a pace to take power supply of electric machinery drive. (2) the pulse alloter that the pace enters electric machinery. Pulse alloter uses software implementation, consequently of electric machinery litre, fall frequency all practices control of real time software, when reducing electric machinery to move greatly, mix litre, fall when frequency lose a condition, add pace, asp with noise. 2.

The communication means with unit control of 2 principal and subordinate of this system advocate accuse unit and from accuse unit to need not part, from control unit make it PC bus line is patulous board, insert a person directly advocate in accusing unit patulous chamfer, put through continuously through PC bus line dispatch, from charge unit common lead plane power source, optimized construction of system not only so, and raised systematic dependability. The communication circuitry of unit of principal and subordinate shows 2 times like the graph: This system uses I/O communication means, among them the PC I/O address of the leisure that the ADDR on PC bus line needs to choose for the basis, IORQ1 is the address of data I/O mouth of 8031. For example, have at the same time when ADDR and IOW when effect, can convey the data that should convey to the of short duration in Ul to put, have at the same time when the RD of 8031 and IORQ1 when effect, 8031 but by IORQ1 mouth person data is read in the address. Have at the same time when IORQ 1 and WR when effect, but should pass the data that gives a PC to convey to U2 of short duration put, have at the same time when the ADDR of PC and IOR when effect, the PC can read in data by ADDR mouth address. 2.

3 from charge unit (8031) the pace that the systematic control as a result of this system drives two mobile axes respectively to seeming enters electric machinery, consequently from charge unit besides with advocate outside dominating unit communication circuit, still have the output mouth IORQ2 of two deferent data and IORQ3. If the graph shows 3 times: Of the PA mouth correspondence of 8255 is X enters electric machinery to the pace, of PB mouth correspondence is Y enters electric machinery to the pace, at the same time mouth of the PA of 8255, PB parts corresponding at the IORQ2 of I/O mouth address of 8031, IORQ3. For example, 8031 should output X the pulse to electric machinery, should keep relevant pulse data only so person IORQ2 can. 2.

The main effect of circuit of interface of 4 interface circuit is: (1) voltage isolating function: Odd the working voltage of a machine is ＋ 5V, and the pace works into electric machinery in a few bend over, even voltage of more than 100 bend over. Processing is undeserved, meeting attaint controls a system, consequently interface circuit should keep apart control system and pace into electric machinery loop come. (2) voltaic enlarge function: Circuit of enlarge of the buy before entering what electric machinery result puts circuit as the pace, sheet piece the signal of machine output undertakes electric current magnifies, so that enter electric machinery to the pace,offer enough big drive electric current. If the graph is shown 4 times,voltage keeps apart circuit, by sheet piece the classics of tall n signal of machine output turns over photograph hind, become low n, your T1 ends, glow of supply of 330 Europe resistor is in charge of ＋ 5V classics, the glow diode in OT of smooth electric coupling gives off light, the photosensitive dynatron in OT guides, make T2 guides thereby, vout outputs tall n, send electric current enlarge circuit. 2.

5 paces enter electric machinery into electric machinery pace is this systematic actuator, control object of the system drives X namely to enter electric machinery to two paces with Y. X to with Y to choose 130BF001 respectively model with 150BF003 high-power high frequency pace enters electric machinery. Design of 3 application software is mixed by afore-mentioned construction of system be informed in the principle, the system wants the figure of treatment or the information such as the Chinese character is to pass advocate accuse unit PC to come editor, processing, imitate moves and online move show. Block rice of this one Shao is written with TURBO C language. 3.

1 pace enters electric machinery, introduce to use sheet below rotor program instead piece the soft port that engine control pace enters electric machinery. 130BF001 and 150BF003 electric machinery all are 5 photographs electric machinery, the working way of electric machinery is 5 photographs 10 take kind, the 5 photographs of electric machinery are A respectively, b, c, d, e photograph, so the appearance sequence of the electrify when turning is: ABC-BC-BCD-CD-CDE-DE-DEA-EA-EAB-AB-ABC. If A, b, c, d, of E5 photograph phasic part corresponding the DO ～ D4 at data line, so control bit string is: 07H-06H-OEH-OCH-ICH-18H-19H-11H-13H-03H-07H. The electrify appearance sequence when electric machinery inverts and control bit string and when turning contrary. Its program is as follows: In afore-mentioned programs, DJAA program is electric machinery turning subprogram, DJFA program is electric machinery oppose rotor program, phasic control strings together ordinal existence to head with TAB the storage space of the address. When turning, phasic value is added " 1 " , from - 1 change to 9 loops, press sequence of electric machinery appearance turning direction sends, turning in order to realize electric machinery; Phasic value rustics to decrease when inverting " 1 " , from 10 change to 0 loops, press sequence of electric machinery appearance invert direction sends, in order to make electric machinery inverts. 3.

2 sheet piece machine block diagram of 8031 works program 3.

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Block diagram of main program of block diagram of 1 main program is picturesque 5 are shown 3.

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Block diagram of subprogram of initialization of block diagram of 2 initialization subprogram, if pursue,6 are shown. Among them, sequence of appearance of buy electric machinery is will dormant electric machinery the lock is in surely designation photograph order, machining speed is in machining a process actually by the user, according to the power of laser, the line that processes work expects at any time of set, by PC input, convey by the PC again odd a machine. .

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3 (close) block diagram of smooth brake subprogram leaves (close) block diagram of smooth brake subprogram is shown 7 times like the graph. The smooth brake of laser is pneumatic component comes (close) , leave so (close) after signal sends, need a paragraph of delay time, in order to ensure smooth brake leaves completely (close) hind, have other operations again. Attention: To same laser, brake opening light and the delay time of brake closing light are different, to different laser, delay time also is different, need to adjust. 4 last words control a system originally already heat treatment of the GLS- Ⅱ with limited company of technology of laser of the hair in Qingdao laser Ⅲ of machine, GLS- muti_function treatment opportunity form a complete set, it is reliable that practice confirmed its are controlled, it is stable that its work. This control system has following function: (1) achievable the editor function that wants the Chinese character that uses laser beam machining, figure, use full screen to edit, intuitionistic, convenient, the stepless that possesses editor information shrinks put a function; (2) Chinese character system uses vector font, can need to offer Chinese character of ten kinds of font such as body of body of block letter, boldface, imitation Song-Dynasty-style typeface, the Song Dynasty, tablet inscriptions of the Northern Dynasties, GB according to the user; (3) have pair of plan (linear, diagonal, round, circular arc, elliptical, hyperbola, cosine curve, corkscrewed yarn) editor function, the user can be revised according to needing to undertake, processing, can make precision revise (predestined relationship of inside and outside) ; (4) the network in this system machines a function, but special at car engine form a complete set inside; (5) have the function that displays contrail of laser spot shift in imitate of the open loop on screen, in machining a process, have the function of the real position of indication laser spot, can use a monitoring system so move, if have deflection or unusual happen, can execute immediately remedy measure, ensure systematic accuracy; (6) perfect as a result of systematic graph and literal editor function, definition is high (horny precision is 0.

0375 degrees, line precision is 0.

0lmm) , can suit to perform the industry such as all sorts of course of study, axes, flange, treatment that covers kind of part and mould treatment at advertising, outfit. Additional, because the graph of this system and literal editor function are perfect, definition is high, completely OK at line cut applying, the mould machines the control that waits for machinery. CNC Milling CNC Machining