Summary: Summarize the problem that welder of DH1000 electron beam exists after be used for a long time; Use brilliant brake to be in charge of intelligent module to regard the power adjustment of high-pressured power source as parts of an apparatus, ohmic Long Ke makes up Cheng controller to regard control as core unit, to the control of this machine the system tries to transform, restore its to run function index in the round, raise its to control a system to run reliability. Keyword: Electron beam welder; High-pressured power source; Brilliant brake is in charge of intelligent module; Can making up welder of electron beam of Cheng controller DH1000 is our country the welder of generation electron beam that in 20 centuries the development at the beginning of 70 time succeeds, through 30 old use, its machinery wears away partly rate is not old, still have very great use value; And electric part technology lags behind ageing of yuan of parts of an apparatus, cannot satisfy the requirement that continues to move. Should spend only a few capital undertakes transforming to its electrical system, recoverable primary moving function. One, the module of intelligence of brilliant brake canal that the high-pressured power source that module of intelligence of brilliant brake canal adjusts faces Zi galactic hi-tech to develop limited company has rectification pressure regulating with communication pressure regulating two kinds. Three-phase communication is chosen to move tool set piece in electron beam welder, brilliant brake canal and synchronism touch hair circuit to be enclosed within module together, ask only when application exterior the control signal that provides 12V direct current source and 0~10V. Its can undertake moving to adjust, control signal shows linear change basically to character is outputted when 2~9V. Three-phase brilliant brake is in charge of intelligent module to be able to take resistor sex load, also can take perceptual load. The wiring of three-phase load allows to be △ / Y receives a standard. Module protects circuit not to have special requirement, use block look to absorb commonly loop and pressure quick resistor absorbs overvoltage can. The principle of power source of high pressure of electron beam welder is shown 1 times like the graph, among them three-phase AC voltage regulator is formed by module of intelligence of brilliant brake canal, the input voltage that its action is pair of step-up transformers undertakes modulatory. Step-up transformer controlled three-phase alternating current by high-pressured silicon caboodle commutate becomes power source of negative dc high pressure after step up, repass 2 model wave of filter of filter wave network outputs one 60kV flat power source. This output power source introduces electron gun to offer high pressure to quicken electric field for cathode electron by high-pressured cable. Electron beam solders the meeting when in running a course, power source of machine high pressure produces high pressure to discharge causes extremely strong electromagnetism impact, and the power canal that brilliant brake provides otherer type is able to bear or endure overvoltage has been mixed voltaic percussive ability is ambitious much, because canal of this brilliant brake applies at this kind of circumstance,be very appropriate. The control line way of module of intelligence of brilliant brake canal is simple, the machine rate that gets interference is little, rose to control systematic dependability. Carry out a proof, the output voltage of three-phase communication module is very symmetrical, overcame when accusing circuit to take transformer load, easy generation slants the defect of magnetism. 2, electron beam welder is other welder of power source electron beam works normally, outside increasing bundle of power supply except need, still need cathode to heat (filament) power source, bar slants control (bias voltage) power source, focusing power source and power source of drive of workbench electric machinery. Cathode adds pyroelectricity source and bar to slant job of control power source is carried at high potential, high-pressured insulation step must be taken between they and low-pressure control loop. We use transformer to come to those who achieve energy deliver with insulation, hand in namely hand in all the time all the time inversion means, if pursue,2 are shown. Cathode imposes the condition of laden and approximate short circuit of pyroelectricity source, its output is flow pattern of low voltage big report; Bar slants control power source offers a potential for grid only, its are laden and approximate open circuit condition, regular job electric current is very small, top job voltage is amounted to 1. 5kV. Focusing power source is a kind of load essentially those who be sensibility is adjustable constant current power supply. Power source of dc machine drive is used adjustable regulated power supply can. Nextpage3, can make up welder of electron beam of Cheng controller system to work in dynamic vacuum environment, need configures evacuating device. The chain of vacuumize process movement, each power source opens the each other that stop signal of condition of lock, vacuum and all sorts of protection signal participate in the logic such as pilot means to control a function by but process designing controller will assume relatively ideal. Can make up Cheng controller to if the graph is shown 3 times,be configured. 1. Of operation of the weak condition that switch quantity controls switch to measure control to include vacuumize course, programmed control and each job power source connect control. Pilot stops urgently according to what come from PLC exterior input, the operation pushbutton on the signal such as vacuum condition, breakdown, spacing and man-machine interface. Pilot target is to let relevant electromagnetism a powerful person and contactor ask to be connected reliably by working order and craft. The use leave out of man-machine interface actual push-button switch, PLC switch inputs semaphore to decrease greatly. 2. Imitate capacity control has 6 imitate to measure need adjustment in electron beam welder, they are high pressure quickens power source, electron beam to flow, cathode adds pyroelectricity source, bar to slant control power source, focusing power source and power source of electric machinery drive. Every loop has independent PID regulator, signal changes unit to give out by the D/A of PLC, the bulk that PLC can control them directly and litre fall the change of rate. The sampling value that 6 imitate estimate changes unit to input PLC through A/D, they are not participated in adjust, serve as only show and monitoring is used. 3. Man-machine interface besides emergency stop button, all operation pushbutton install electron beam welder to go up at man-machine interface, the structure that simplified to control a system and connect a line. Man-machine interface still can use as solder parameter set and indication interface. Graph 4 show go out to handle an appearance among them (man-machine interface is NT620S model) . Left next horn are the pushbutton of picture changeover pushbutton and screen that print, feel these pushbutton NT620S to be able to choose to show the picture of need, so that operate. 4, moving effect 1. The DH after transforming - welder of 1000 electron beam basically runs parameter to quicken voltage: Rating - 60kV, maximum - 70kV, ripple coefficient ＜ 1% , stability ＜ 1% ; Electron beam flows: Rating 100mA, maximum 120mA, ripple coefficient ＜ 1% , stability ＜ 1% . 2. Solder test result quickens voltage - 60kV; Electron beam sheds 80mA; Solder speed 300mm/min; Stainless steel weldment, welding line is dark 23.
6mm, deep wide than 11.
2:1. Use can make up Cheng controller to make all sorts of protection functions more perfect, use man-machine interface (feeling screen) make component and reduce even the line greatly, raise its to control systematic dependability thereby. Each adjust unit uses numerical value to give way, assured to solder the repeatability of parameter. Make clear via moving more 1 year, the function index of welder of DH1000 electron beam is able to restore completely, its control systematic dependability and repeatability to rise substantially. CNC Milling
CNC Machining