Example of breakdown of NCXT2025 of milling machine of boring of door of numerical control dragon is analysed

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Numerical control of milling machine of boring of door of dragon of NCXT2025 numerical control uses my plant FANUC 6M system, main shaft uses system of timing of Japanese DL-SDZ-2F-3FK dc, ohmic dragon C500 is installed outside but program controller. This machine tool is one of machine tools of home of 80 time end's most advanced large numerical control. Example pursues part of control of 2 MA of graph of circuit of 1 motion preparation and graph of regulated power supply phenomenon of breakdown of 3 echelon graph: When machine tool electrify is started, screen shows: Case study of breakdown of FANUC SYSTEM 6M MODEL B SERIES MA3 UERS15 NOT READY: NOT READY is to point to control equipment or servo did not get ready. Usually, the probability that servo did not prepare is quite high, and the case that control equipment did not prepare is particularly little. For this, want to eliminate this breakdown to should check servo first, reexamination control equipment. Process designing of PC of the have the aid of when checking control equipment implement, can achieve the result of get twice the result with half the effort. Breakdown handles measure: (1) undertakes be checked in the round and detecting to the servo of 6M system, did not discover obvious unusual point. (2) undertakes checking to control equipment part. If part of athletic preparation circuit pursues 1, with avometer communication 250V archives is measured terminal 1 with terminal the 2 voltage between are 110V. Press starting pushbutton PB3, measure a place 3013 with terminal the 2 voltage between also are 110V, and dot 3014 with terminal the 2 voltage between are 0V, the contact of MA does not have demonstrative small relay put through. Measure with archives of avometer dc 50V (the 4 voltage between are terminal of 2)3035 seeing a picture and terminal of regulated power supply 12V, normal correspondence is 24V, apparent on the low side. Measure terminal again 3 with the volts d.c. of 4 also be 12V. The load of take out regulated power supply, measure its to carry voltage to be 24V for nothing, normal, consequently suspicion is power source takes laden ability to reduce be caused by. The dc regulated power supply that uses another 24V-5A replaces original regulated power supply, try machine, everything is normal. Example 2 breakdown phenomenon: Y axis hand is moved, automatic feed negative way is regular, and direction does not have feed. Breakdown case study: Analyse this breakdown reason, must combine concerned echelon to pursue (the 3) that be like a graph. Breakdown handles measure: (1) general PC but program controller is inserted in PC process designing implement on interface, and process designing implement the condition transfer switch that go up is put in surveillance (MONITOR) condition, press CLR key and MONTR key, reach by CLR, OUT again 1, 3, 0, 2 numbers key, show: 0000 OUT 1302 presses MONTR key next, surveillant its condition: 1302 NO shows 1302 relay coil puts through. (2) measures 1302 output terminal and terminal of regulated power supply with archives of avometer dc 50V the 4 voltage between are 0V, the 3 voltage between also are the output terminal of 1302 and terminal of regulated power supply 0V, the output relay of 1302 is bad already it is thus clear that. With the relay of same type replaces original PC interior to output relay, everything returns to normal. Example 3 breakdown phenomenon: When main shaft high speed, often appear stop turn phenomenon. Breakdown case study: Want to remove this kind of trouble, must from the following two respects begin: (1) sheds systematic itself continuously: (2) controls the exterior circuit share of dc system. Act on first easy hind difficult principle, examine a system first exterior, check systematic itself again next. Breakdown handles measure: Check a figure above all the concerned component that 3 echelon pursue. The indicator light that goes up according to PC observes main shaft high speed stops when turning, graph 3 medium 306 drop report. With the switch of same type is replaced, electrify tries machine, trouble removal, moving a few months, everything is normal. CNC Milling