Have the kind that breakdown of lathe of what commonly used numerical control diagnoses
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source:DALLMAN CNC Machining
Numerical control machine tool is a kind of high accuracy, Gao Rou sex, efficient automation machine tool, because its invest,get higher than common machine tool much, the fault rate that lowers numerical control machine tool accordingly, shorten fault correcting time, have very important sense to raising machine tool utilization rate. Titanium grand machinery is with circumgyrate tip, guide screw, axis lathe of treatment, numerical control is machined, extension bar of knife handle arbor, collet is a company advocate make a product! Current, the breakdown of numerical control machine tool is diagnosed is the difficult problem that puzzles operation, maintenance technician all the time. The security as a result of numerical control machine tool and working dependability will be right the impact with the benefit immediate generation that produces an unit, it is very important that the breakdown that because this is right,numerical control machine tool appears undertakes be diagnosticed in time. After occurrence breakdown of numerical control lathe, we should be mixed from lead plane electric two respects undertake an analysis, judge first going out after all is lead plane breakdown or electric breakdown, again thorough analysis, examination, locate trouble spot, give finally eliminate. One, the diagnosis of lead plane breakdown to common lead plane breakdown, diagnostic method is more, be like those who use advanced test method " modern diagnostic technology " with the tradition " practical diagnostic technology " etc. 1, this diagnoses practical diagnostic technology is by what safeguard personnel to pass his sensory the breakdown that charges a machine tool with experience logarithm undertakes diagnostic. The diagnostic process that uses practical diagnostic technology because of breakdown type different, all sorts of methods are not had early or late cent, can alternate or undertake at the same time, should integration analysis, just can obtain better result. Practical diagnostic technology does not need complex and costly instrument, can undertake diagnostic at any time and place, and fast, convenient, accuracy is taller, suit to undertake to the machine tool particularly preliminary diagnose. 2, this diagnoses modern diagnostic technology is to use diagnostic instrument and data processing to be opposite the certain feature parameter of machine tool machine, wait like oscillatory, noise and temperature undertake metrical, have the normal value of measured value and regulation comparative, the working status with judging machine is normal, undertake to the moving condition of machine the serious degree of the breakdown reason of machine, place and breakdown undertakes forecast and forecasting; to be able to be opposite further thereby qualitative the analysis with ration. Use the initial stage that modern diagnostic technology can malfunction in machine, discover the place of breakdown in time, undertake maintenance, can prevent the further damage of mechanical spare parts thereby. Modern diagnostic technology already received ceaseless promotion and application nowadays. 2, the diagnosis of electrical system breakdown the breakdown of the electrical system to numerical control lathe, its investigation, analysis and the process of diagnostic breakdown, namely of breakdown eliminate a process, because this method that its breakdown diagnoses is special important. Below introduce a few commonly used diagnostic methods simply. 1, direct way. Basically use range estimation, hand to feel, the method such as electrify. The method that maintenance technician uses above all when breakdown is diagnosed is visual check law. Want to seek advice above all, phenomenon of the course that to the spot personnel of occurrence breakdown detailed advisory breakdown produces, breakdown and breakdown are sequential, and should enquire for many times in process of whole analysis, judgement; The 2nd it is serious examination, basis breakdown diagnoses a principle from undertake discharging checking stage by stage inside extroversion. Whole checks a machine tool each are electronic-controlled device (if lubricate system of device, numerical control, lukewarm accuse device to wait) have without call the police directive, whether is status of departmental cent job in whack (for instance library of position of manipulator position, main shaft condition, each reference axis, knife) , the machine tool is local should observe to whether there is short circuit, open circuit on circuit board, circuit board yuan whether do parts of an apparatus and circuitry have the appearance such as crack, burn, whether is chip contacted undesirable wait for a phenomenon, the circuit that passes to maintenance board, should check more have without be short of, wrong reach the situation such as the line; The 3rd it is feeling, feeling can be passed below condition of report of whole act on one's own judgment in an emergency each are main the installation state of circuit board, each outlet insert receive state, each power and signal lead (like wiring of servo and electric machinery contactor) connection state will discover the likelihood appears the reason of breakdown. 2, diagnose functional law oneself. Diagnose a function what use numerical control system oneself, give out call the police information, those who indicate trouble roughly origin. 3, commutative law. identical module and unit and mutual trade, observe the condition that breakdown changes, determine the position of breakdown quickly thereby. 4, the instrument is measured compare a standard. After the system malfunctions, use groovy and electrical engineering testing instrument, wait to signal of the voltage of breakdown part, power source, pulse undertake actual measurement, the value when will normal value and breakdown is compared, can separate the reason of separate out breakdown and location position. Instrument examination law is the electrical engineering appearance of use convention, hand in to relevant dc and pulse signal and each groups, voltage of direct current source undertake metrical, find out potential breakdown problem thereby. For example: Take avometer to examine case of each power source, and to wh some of which the monitoring point of relevant signal condition that decorates on circuit board undertakes metrical, take oscillograph to observe its are the amplitude of pulsatile signal, phasic perhaps have, without, take PLC process designing implement detect the trouble spot in PLC program and reason. 5, knock law. Numerical control system by all sorts of circuit board composition, there are a lot of solders to nod on every circuit board, any empty solder or contact are undesirable appear possibly to breakdown can beat solder having theory gently with insulant or contact undesirable doubtful point to be in, if breakdown appears, criterion breakdown is in probably the place of knock. A few kinds of afore-mentioned methods are used at the same time, undertake breakdown integration analysis, can diagnose the position that gives trouble quickly, can remove trouble quickly thereby. 3, the diagnosis of the principle breakdown that breakdown diagnoses is the level with remove trouble of numerical control lathe very important. Making the following principle should be followed when the diagnosis of breakdown. 1, first exterior hind the fault rate of itself of machine tool of in-house and contemporary numerical control already became lower and lower, the happening of major hitch reason of dispute system itself causes. Maintenance technician should be checked by platoon of the one by one inside extroversion, avoid optional open the envelop as far as possible, disassemble, can enlarge breakdown otherwise, make machine tool precision is lost, function is reduced. 2, first lead plane hind is electric generally speaking, lead plane breakdown detects more easily, and the diagnostic difficulty of numerical control system and electric breakdown is greater. From the point of practical experience, having in the breakdown of numerical control machine tool is caused as a result of the malfunction of leader share very much for the most part. It is so before corrective maintenance, should notice to remove mechanical trouble above all, often can achieve the result of get twice the result with half the effort so. 3, below the static condition that the trends after Xian Jing condition cuts off the power in lathe, pass understanding, observation, test, analysis, breakdown won't be caused to expand after affirming electrify or produce an accident, just can give lathe electrify. Below moving condition, the observation that has trends, examine and check, search breakdown. And of ruinous to may happening after electrify breakdown, after must eliminating risk first, square but electrify. 4, first simple hind complex should appear a variety of breakdown interweave each other, answer to solve easy problem first, the problem with bigger difficulty is solved after. After simple question is solved, the question with big difficulty becomes possibly also easy. 5, first general hind special when removing some trouble, should consider the commonnest possibility first reason, analyse the special account that produces rarely next. Additionally equipment maintenance technician must have certain professional quality. To specific maintenance target, maintenance technician should be decomposed above all master a system the operation method that the rigid structure; of the working principle of each part and lathe wants to know equipment next, behavioral order; All sorts of elements that cause trouble to the likelihood namely finally undertake hand-in-hand travel checks maintenance actually be analyticed in the round. Detailed equipment record should be established after be being maintained every time, had recorded the time of breakdown happening, phenomenon, and the breakdown analysis, diagnostic method, method that eliminates breakdown, if bequeath problem also answers detailed notes, can make not only so every time breakdown has according to can be being checked, and can accumulate maintenance experience, for the following breakdown maintenance lays good foundation. CNC MillingCNC Machining