The breakdown of mechanical equipment diagnoses parameter property
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source:ELAND CNC Machining
The symptom that sign of failure classifies traditional system breakdown has oscillatory and unusual, noise to increase, do not hang on block, separation and reunion not clear, pulley is irretentive booked motion curve, efficiency drops, deliver smooth sex to destroy as a result to lose gradually transfer dynamic function; The symptom of breakdown of hydraulic pressure system is the pressure that short of books or pressure distributing commonly, efficiency drops, oil of unusual vibration and noise, calorific, leakage; Walk the symptom that changes a system to breakdown often appears clash, sideslip, change direction be ineffective etc. The sign of failure of these metabolic multiterminal basically divides above it is 6 kinds: 1, the change of overall performance this is a kind of very apparent common sign of failure. If the output of grab, fork-lift truck falls,oily bad news measures the diesel engine of; of treatment loss of accuracy of; lathe, planer to produce change to wait with the relation of output. These sign of failure are very apparent, be aware of easily. But its form a reason more complex, must analyse seriously when undertaking breakdown is diagnosed, ability judges the place of breakdown and its reason correctly. 2, the vibration of oscillatory and unusual mechanical equipment is mechanical equipment a kind of attribute in moving process, even if the most accurate machinery should produce vibration inevitably also in locomotive process. But mechanical equipment is when whack, the numerical value of oscillatory parameter is inside limit. If mechanical equipment vibration happens unusual, cause by breakdown certainly. The vibration that if rotor is lopsided,can cause radial to go up increases; axes not the vibration that coincide can cause axial to go up increases; lube drop off to be able to happen intense, not stable vibration. This kind of sign of failure reflected the change of status of mechanical equipment work, it is the important information that mechanical equipment malfunction diagnoses. Accordingly, research and the feature that analyse mechanical equipment to produce vibration reach his to change, can undertake diagnostic to the breakdown of mechanical equipment. 3, noise is unusually mechanical when equipment is in normal technical condition, what can hear in locomotive process is a few even and slight sound only. If be in,mechanical equipment is accompanying other is mixed and disorderly and heavy noise in locomotive process, be like successive or clearance is given out heavy " when, when " metallic knock sound, give out brief and clear " , " noise or give out successive metallic attrition sound to wait. Noise of these mechanical equipment movement are unusual, indicate the normal technology condition of a mechanical equipment already produced a change. The range that abnormal knocking breakdown involves not only is quite wide, and experience makes clear: Always noise is heavy accompany have apparent brace up those who shake a phenomenon is much belong to catastrophe failure, premonitory and mechanical equipment may produce accident of parts scar sex. So, noise is the strong proof with mechanical equipment undesirable technical condition unusually. Unusual to noise sign of failure must be treated seriously, microscope, judge correctly. 4, phenomenon of overheat phenomenon overheat happens in the place such as engine, transmission, brake, bearing normally, below regular job status, no matter mechanical equipment works how long, these place should maintain constant working temperature, if the temperature of these place exceeded working temperature of the regulation, call overheat phenomenon namely, indicate the trouble with the some place potential existence of mechanical equipment. Be like phenomenon of engine occurrence overheat, show trouble of cooling system existence, transmission or bearing produce overheat phenomenon to belong to those who lack lube place to cause more. If the breakdown of some overheat phenomenon is not seasonable diagnose and try to eliminate, can cause works burn caustic or burn frit accident. Accordingly, to overheat this kind of sign of failure nots allow to ignore. 5, wear away the spare parts such as annulus of the bearing in equipment of machinery of odd-come-short increase sharply, gear, piston and crock canister, wear away mediumly in moving process odd-come-short is OK collect in lube or hydraulic pressure oil, the content that particle wears away in oily appearance is the function that parts injures. Determine how many what atomic content wears away in appearance giving oil, can determine parts tatty rate. Accordingly, through wearing away the collection of odd-come-short is mixed the analysis of oily appearance, can obtain concerned parts to wear away the information of breakdown, this also is a when breakdown diagnoses important method. 6, the surface of patulous and mechanical spare parts of crackle or in-house blemish and injury are a kind of hidden trouble that causes mechanical equipment trouble, the surface of alleged spare parts or in-house blemish are to show metallic parts or material are in machining (include to solder, forging, cast, pressure delay etc) the slag inclusion that causes in the process, loose, stomatic, sand holes, crackle. Be opposite with crackle blemish among them the effect of parts radian is most serious. In recent years, of mechanical equipment " ageing " already was put forward as a serious problem, be in " ageing " in the process, of parts wear away, rupture, corrode the metropolis in waiting for multiform scathing configuration to produce crackle. Visible, major hitch place and the crackle with the multiform existence inside parts have close tie. Crackle of the existence in parts is not met certainly cause trouble, crackle does not make the working ability of mechanical equipment drops apparently completely possibly before reaching some kind of size. So the problem does not depend on crackle whether existing, and depend on this kind of crackle whether can expanding very quickly, and cause ability of mechanical equipment work to drop. No matter be the crackle of the crackle that parts forms in treatment or in use generation, changing when parts below the long-term effect of stress, crackle can expand necessarily. Expand shelter in the process in crackle change with sheltering Li Bo form is released, the energy that should release is enough big when still can sound, this kind of sound is the evidence with patulous crackle. Use advanced sound to project a technology, the evidence that can expand according to crackle diagnoses the trouble that causes by crackle. CNC Milling