【正文】 s that system gives out. But the face ply fixes guiding lights or upper guiding lights of printing circuit board is only the information providing we with 南通職業(yè)大學機械系畢業(yè)論文 36 a few malfunctions in rough, these information can make us find malfunction occurrence place paratively quic。s appears , requires that the personnel who is maintained poses out judging accurately. For instance , the gear wheel has mark or scar left by a knifecut face to face, we can cut a flat surface , take a look at having mark or scar left by a knifecut or not, take a look at a tool carrier then, again being given to in if Z direction have moving forward, e this to test that being able to use magism to depend on a form. Have mark or scar left by a knifecut, but magism to keep self39。 The rotator does not lubricate because of axle bearing , the hot shot , final electric motor of end cap adopts a baby live high and low bringing about, electric motor fever derides even. 南通職業(yè)大學機械系畢業(yè)論文 34 That the mains input 7 mains inputs are examined is examined is a very important link. Need to examine that the mains input is regular or not first, this is the most important condition of regular job of numerical control machine tool, as long as voltage is abnormal , bring about malfunction closing down surely , bring about system duty chaos even. Have many machine tool or testbed have tested run in abroad , transport to in the homeland assemble the day afer tomorrow being abnormal, problem being a power source also often. And then definitely not let an accident expand when examination, ensure that part carries out power source examination reliable, for instance , reaching loads down first, measure service voltage , every control voltage value alone, the range expanding measurement. But the power source module is power dissipation big , easy to go wrong, great majority condition power failure is to arouse from the loads. Need to pay attention to fusible cutout replacement, because of the fusing line is to have protected a stream39。t want the examination being in progress special. Light sensor and glowing ponent ageing, can bring about reading the belt mistake. These ponent , ponent respond to 6 the ponents responding to the maintenance the regular intervals and the ponent examination be in progress according to Hoyle in time wash with lubrication. If not carrying out a maintenance be very easy to be out of order. Some electric motor mutators already have dawdled away having bee a ditch , the rotor blows in , brings about discharging , axle bearing since the brush is pink to lack for lube, these all are that not yet timely upkeep brings about。 參考文獻 1.《機械制造工藝設計簡明手冊》 哈爾濱工業(yè)大學―――李益民主編 2.《機械制造工藝學》 江南大學―――鄭修本主編 ３ .《金屬切削手冊》 上海市金屬切削技術協(xié)會主編 4.《金屬機械加工工藝人員手冊》 趙如福 ―――主編 ５ .《石油化工管道安裝設計便查手冊》 王懷義―――主編 南通職業(yè)大學機械系畢業(yè)論文 32 中英文翻譯 外文原文： The machine error examination Malfunction examination process different, but has a little following method in general because malfunction type different. One, routine examination 1 outside shows the queen who examines that failure happened in system , carries out outward appearance examination first , seeks the obvious malfunction , has the pertinency field to examine the relevant ponent. Pay attention to if air switch , breaker , hot relay have tripping operation phenomenon in overall examination, if every fusible cutout phenomenon having fusing , every if printing circuit board have ponent if damage , break , hot shot phenomenon , connecting line have a disconnection , graft if piece have ing off. Want the choice examining that switch location , potentiometer setting up , short circuit are good to be identical with original state or not too. And pay attention to observing a machine tool during the period of the malfunction appears, phenomenon such as noisy , vibrating or not , coke smell of burnt food , abnormal fever heat. If the electric fan besides, cooling down rotate waits regularly. With regard to, what abnormal phenomena the malfunction happens having occasionally , how operation personnel handles, need to be in progress asking about detailedly, this is very important to the cause analysing a malfunction. Or 2 connection cable and connecting lines are examined specifically for the malfunction in connection with the part, appearance or the implement connecting line is regular or not , if wire , cable breaks a little bit simplely, if electric resistance value enhance waits. Need to pay attention to often flexible cable or wire especially , disconnect since accepting force possibility. 3 the end linking up and relevant specifically for the malfunction parts of the connector assembly examination, examine that its pertinent terminals son, element connector assembly. But these ponents oxidize easy to loosen , 南通職業(yè)大學機械系畢業(yè)論文 33 generate heat, electrochemistry corrodes, the disconnection appears or is to contact not good. 4 pair of ponent issuing a job in adverse circumstances is examined Get along to shaking , gluing dust or the greasy dirt easy to be heated , to be bee damp , be accepted , age or bee invalid easy to make a ponent appear. Need to examine that carefully to these places. The ventilating duct , the outside surface are especially very clean , often store up large amount of electric conduction dust but within the ventilating d