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MCFHD80A horizontal machining center control system design – horizontal machining center, the contro by jekky
This paper describes on the mcfhd80a Horizontal Machining Center For NC transformation process Mcfhd80a horizontal Machining Center Department of Dongfeng Axle reducer shell company CNC machine tools The machine is imported from the Czech Republic early 90s the original control system for the Siemens 820m CNC System Because the system is aging unstable operation failure frequently so make numerical transformation 1 CNC system hardware configuration Digital Modification by fanuc 0i mc CNC i Series AC digital servo control scheme the hardware configuration shown in Figure 1 Hardware configuration diagram Figure 1 Mcfhd80a addition to the three basic geometric processing center axis there is a servo driven rotary table Therefore a total of four axis servo axes namely x y z b Where x y z axes are three basic direct detection by grating displacement table constitute the whole closed loop control The Tool for the hydraulic driven chain Tool which can accommodate 60 knives knives exchanging mechanical tool change Major component control system hardware Basic control unit 2 slots specifications a02b 0309 b502 Motherboard specifications a02b 0309 h102 It includes a programmable machine controller pmc sb7 Cpu board 32m dram 486 specifications a02b 0309 h006 8 4 inch color lcd mdi device level specifications a02b 0309 h124 m I o modules specification a02b 0309 c001 Input output points for the 96 64 points Operator panel with i o modules specification a02b 2002 0520 Input output points for the 48 32 point with hand pulse generator interface Portable hand pulse generator specification a860 0203 t012 Position encoders specification a860 0309 t302 10000rpm 1024 pulses turn Feed servo motor Cf former Machine Tool select the new servo motor servo motor rated torque x axis y axis and z axis are selected motor a40 3000iwithfan rated torque 53n m Where y axis motor with brake to prevent the machine tool spindle box blackout vertical drop Restrictions due to the installation location b axis can not the original motor specifications of motor selection Is specified as follows In the original control system b axis servo Motor Model 1ft5076 0ac71 locked rotor torque 22nm Fanuc servo motor corresponding model 22 3000i However 22 3000i flange size ratio 1ft5076 0ac71 motor flange size large The machine determines the current structure of the new motor flange size no larger than 142 142 Therefore b axis motors can not choose 22 3000i Not only 22 3000i can not choose 12 3000i can not choose 12 3000i the flange size is 174 174 Eventually had to use 8 3000i motor drive rotary table Spindle Servo Motors cf the original Machine Tool Spindle Choose a new electrical motor power Used motor a22 7000i Servo amplifiers b axis servo amplifier used svm1 40i x axis y axis and z axis servo amplifier are used svm1 160i Spindle amplifier Specifications for the spm 26i Power supply module According to the already selected spindle motor and servo motor calculate the rated output capacity of the power module power module the maximum output capacity peak output capacity of the power module power module should be used for the psm 55i Grating interface board specifications a02b 0236 c205 Grating x y z axis with a grating which formed the whole closed loop control Grating model Heidenhain ls106 The grating output 11 a sine wave signal Grating signal conversion circuit the ls106 11 a output sine wave signal into square wave signals ttl 2 bus set 1 I o bus settings The installation location of each module by the group number base number slot number and module name says it may be the data and input output address specific modules address The module occupies di do points bytes stored in the programmer so only specify the first byte address of each module and the remaining bytes of the address automatically assigned by the programmer 0i c itself is not as with a built in i o board connected peripherals must pass the i o expansion module i olink jack mount the two subordinate units operation panel i o modules and i o units Handwheel Connected to the i o unit on Use two sets of slave units shown in Figure 2 Figure 2 i o link connection diagram Two subordinate unit of i o address can be set as follows Control panel i o modules i o address input starting from x0 0 0 1 6 output starting from y0 0 0 1 4 i o unit of i o address input from the x006 beginning 1 0 1 oc02i output from y004 start 1 0 1 8 Figure 3 namely i o setup screen Figure 3 i o address assignment 2 Fssb servo bus settings Use fssb system cnc servo amplifier and separate detector interface unit through the cable connection between each other These amplifiers and pulse module is referred to the driving part Drive number 1 2 3 10 in accordance with the driver assigned in ascending order the smaller number from the specified drive cnc closer Closed loop servo system connection diagram shown in Figure 4 M1 in Figure 3 that the first separation detector interface unit Figure 4 Closed loop servo system connection diagram Use fssb perform automatic settings configuration screen set the screen at the amplifier input x y z b axis of the shaft No 1 2 3 4 respectively In the axial configuration screen to set x y z axis separate type detector m1 as 1 2 3 b axis detector non separation type not set Figure 5 shall fssb setup screen Figure 5 fssb Dashboard 3 table indexing function design 1 Indexing Table mechanical drive Rotary table is a CNC milling CNC machining centers an important and indispensable component Its role is in accordance with the instructions for turning cnc system or continuous rotary indexing feed Degree of common table and a hand rotary table CNC rotary table Indexing table of the function is
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