System of numerical control of M64 of 3 water chestnut is getting the application in cutting a center to transform

　 of 1 breakdown phenomenon (1) after machine tool electrify, show axis of X, Z already winded reference point instantly. (2) operation pattern is moved to fall in handwheel and dot, hair X axis runs an instruction, x axis appears S03 0051, servo breakdown calls the police. (3) when Z axis moves, shake. (4) the dot of axis of X, Z moves speed and distance and actual set to have very big difference. (5) the parameter of set is irretentive. 1.

2 examinations and analytic 　 (1) after machine tool electrify, show axis of X, Z already winded reference point instantly. But axis of actual X, Z did not make any motions. Use I/F to diagnose picture examination, the corresponding contact of NC interior has put through. These phenomena show controller produced breakdown, and M50 controller already belonged to the product that exits manufacturing alignment. Its upgrade the product is M64AS. Because this transforms plan to be as follows through making after balance: (2) controller of will former M50 changes it is 　 of 　 of M64AS controller; (3) increase basic I/O DX450 　 of 　 of a; (4) change 　 of 　 of; of electric machinery of X axis servo (5) the servo driver with former reservation - 　 of point of to program of;2 PLC of servo electric machinery (, rely on servo electric machinery completely to sign up for brake to lock up its calm, when debugging initial stage to once produced deferent PLC program, the phenomenon that Z axis glides. Through analysing PLC process, the control that discovers original order signs up for brake to servo electric machinery is not perfect, if be in,PLC program conveys when newspaper brake is opened, because convey when PLC program, PLC program can stop, NC did not get PLC programme controll, servo was not in working status, and newspaper brake is opened again, because reason Z axis is self-prossessed and glide, cause an accident easily. NC system itself uses to give out after " servo axis prepares ending signal " control servo electric machinery signs up for brake, give out first when deferent PLC program " stop urgently " signal, program of again deferent PLC. Solved the problem that Z axis glides so. If the program pursues 1: Graph 1 with " servo axis prepares ending signal " 　 of brake of newspaper of control servo electric machinery (2) knife library reachs the program that change a knife: This getting cuts central knife library to be vertical knife library, its change knife job order to be: The motion on Z axial arrives " cutting tool clamp " position blocking a knife -- - main shaft loose knife -- -- blow air (blow a dust, scrap) -- -- Z axis rises highest the dot that change a knife, the end that blow air -- - knife library rotates pick a knife -- -- Z axis drops " cutting tool clamp " position blocking a knife -- - main shaft locks up a knife -- - Z axis drops origin. Change a knife to finish. The subprogram that change a knife weaves by above order. The mainest part is being concerned with PLC program in the program that change a knife is knife library rotates the part that pick a knife, now expatiatory as follows: (3) nearby picks a knife: All programs that change a knife ask nearby picks a knife. A special statement offerred to resolve the demand that knife library positive and negative turns in NC of 3 water chestnut: If pursue 2, this instruction can control M700 open the way that will decide knife library nearby picks a knife. Namely the direction that knife library positive and negative turns. Graph 2 nearby choose knife instruction 　 (4) the following program is used at handling current knife order (if pursue 3) graph the processing of date of 3 current knives is handled through above program, current knife date is secured to deposit in R3000. And in NC, the knife number that already selected is fixed deposit in R36. When " current knife date " = " choice knife date " when, criterion knife library stops to rotate. Nextpage 　 　 (5) the whirl of the library of knife of vertical of the characteristic that change a knife of vertical knife library and knife library fixed position have its specialty, the fixed position of vertical knife library must rely on to insert fixed position to sell will assure. The order when beginning program of work out PLC is: (6) with knife date equal condition cuts off knife library positive and negative to turn output signal; uses knife name at the same time equal condition is given out insert fixed position to sell 　 of instruction; 　 (7) sell with fixed position insert the signal that finish to judge knife library fixed position to finish. But in debugging a process, occurrence knife library rotates when fixed position punctual forbidden circumstance, below forbidden circumstance, although gave out fixed position to sell,insert an instruction, and fixed position is sold also did insert a movement, knife library still also locates forbid. Does the problem go be over there? Through structure of machinery of anatomize knife library, although fixed position is sold,discover did insert a movement, but what if did not insert place of axis of knife library electric machinery,take is slippery dish inside fixed position chamfer, still cannot finish fixed position. And if cut off knife library,rotate fixed position of the reappearance after signal is sold insert an instruction. Knife library relies on inertial motion, fixed position is sold slipping dish on mobile, it is not certain that such fixed positions are sold can slip dish of fixed position chamfer inside, the result appears when fixed position punctual forbidden circumstance. Because this modifies PLC program: (8) with knife date equal condition is given out insert fixed position to sell instruction; picture 4 with knife date equal condition is given out insert fixed position to sell instruction 　 (9) sell with fixed position insert positive and negative of library of knife of the signal cut that finish to turn output signal; pursues 5 sell with fixed position insert the signal cut that finish. Installed correctly afresh again at the same time " fixed position is sold insert finish " detect switch, through above processing, the whirl with knife can accurate library locates. The setting of 3 parameter and trouble removal 　 3.

The eduction 　 of 1 breakdown (1) breakdown 1: After X axis electric machinery is stopping, still shake. Observation " servo is surveillant " picture, its position data also makes a round trip range is bigger jumpy. Adjust #2205 (speed annulus gain) : Improve somewhat but cannot eliminate. Change after servo driver, breakdown still was not eliminated. Judgement is problem of electric machinery coder, change the breakdown after coder is eliminated. (2) breakdown 2: X axis electric machinery is in switch on the mobile phone after electrify, electric current of servo electric machinery rises ceaselessly, till appear,overload calls the police. Judgement: Incorrect; externally mounted tightens electric machinery parameter beforehand force crosses big; 　 to deal with: After tearing open electric machinery next reshipment, breakdown is eliminated. (3) electric machinery of axis of breakdown 3 Z is in process of apply the brake, occurrence S030051 overload calls the police. Lengthen after increasing slowdown time indelible still this phenomenon. Judgement: ; of be no longer in force of resistance of apply the brake or 　 of; of parameter setting mistake deal with: Check #2236 (type of second birth resistor) parameter, this parameter setting is undeserved, after revising, breakdown is eliminated. 3.

The setting 　 of 2 important parameter (1) model of #2225 servo electric machinery although electric machinery is identical, this parameter along with the model of controller and servo driver different. If this parameter setting is undeserved, the phenomenon that when meeting occurrence electric machinery moves, shakes. (2) #2219 #2220 coder defends oneself if the effective use row spacing of electric machinery leaves and rate shows the indication data on screen to existing to become diploid error, should check this parameter. (3) #2205 (speed annulus gain) : This parameter should be installed commonly in 150 above. Make sure treatment precision is mixed hard otherwise bright and clean degree, but on this equipment this parameter installs 60 above to appear oscillatory, judgement is with the machine tool resonance is concerned. parameter #2238 (resonance frequency) after installing =300, can #2205 (speed annulus gain) should install 150 above and do not appear oscillatory. 3.

This aircraft is moving 3 precision one week later, detect with laser interferometer precision, after undertaking compensating through using the parameter of #4000 series, precision is achieved 0.

0001 millimeter, satisfied the requirement of the user. CNC Milling CNC Machining