460 millimeter fabric width becomes a board officer to make the same score system of plane shear automation
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Aimed At The Existent Problems, such As Lower In Control Precision Etc For Traditional Control System Of Cutting Machine, the Author Researched And Made A Sort Of Automatic Control System Of Cutting Machine With Plain Adjustment Function For 460mm Wide Armor Plate Based On Industrial Control Product Solution Of Delta Company.
It Is Mainly Discussed To System Design As Well As Some Key Technical Detail In The Process Of Research And Manufacture.
By Way Of Production Practice And Application, the Result Shows That It Is Successful In Design, higher In Control Precision, stationary And Reliable In Running, and Practicable For Similar Intermission Cutting System Through Suitable Modification.
The System Has Engineering Meaning Of Generalization And Application.
Key Words: The graph in Cutting Of Setting Length Speed Orientation Algorithm Cutting Control System [classifies date] label of TP273 [document is piled up] the fabric width that factory of 1 foreword plank produces B article number becomes an armor plate to need to pass commonly school is gentle cent is cut, ability becomes end item to offer a client to use, because smooth plane shear of this board officer is armor plate factory and plank storehouse,produce equipment importantly. Exist in use respect as a result of traditional plane shear a lot of problem, the manufacturing efficiency that in the light of traditional board officer smooth plane shear exists and cut the issue with fixed position small precision, developed the 460mm fabric width that is based on a stage to amount to labour to control a product to become a board officer to make the same score system of plane shear automation, this system already threw production to use, moving stability is reliable, control precision is tall, safeguard use convenient, get user reputably. The article is opposite from engineering technology angle the problem is made related the certain and crucial technology in developing a process and project implementation some discuss. The problem that 2 armor plate cut out craft brief introduction and tradition cut out control exists 2. 1 cut out technological process brief introduction pursues 1 cut out technological process is shown 1 times like the graph, cut out system by send makings, officer smooth, cut board, leather belt conveys and pile up the 5 stature systems such as finished product are comprised. Raw material coils board (the armor plate after 5mm of about 3 ～ ) via sending makings machine and planish machine hind, the amortize ground that grows through 4m conveys to make officer smooth fixed position to school smooth subsystem after hole, according to give after cutting long demand to locate, cut trigger to reduce board cut finished product, final classics leather belt sends pile up pack. The system moves in, the photoelectricity switch in be located in ground hole is used at sending makings machine with start or stopping according to degree of armor plate prolapse to expect, so that maintain send makings speed and school to make the same score photograph of accident travel speed to match, the length that operates personnel to be able to input every knife to cut through feeling screen man-machine interface and reduce cut knife number, the system is started after set is finished automatic investment moves. Cutting the specific technology quota that cuts craft into parts to ask is: School smooth plane shear asks to be in cut into parts when cutting length 2m, its speed can be achieved minutely cut into parts cut 8 times, armor plate length is relative to the error in 5mm. 2.
2 technical data ask the basis cuts out craft need and physics are calculated, the configuration of relevant technology data of index of contented engineering technology is: Send makings machine power, 7.
5kW; Power of electric machinery of decelerate of calibrating frequency machine is 3.
7 KW, decelerate comparing is 15: 1; Cut power of trigger electric machinery, 4 KW; Leather belt passes power of power transmission engine, 3.
7 KW; Diameter of roller of calibrating frequency machine, 108mm; Coder resolution, 500ppr; Send makings machine top speed, 25m/min; Cut trigger rate, 60 / cent; Thickness of raw material plate is 3 ～ 5mm, width is less than 460mm; Amortize ground hole: 4m is long, 3m is deep. 2.
It is not difficult that the problem that 3 traditions cut out control system exists asks to control a system to undertake designing to this kind by afore-mentioned technical data, but the blemish that exists as a result of traditional solution, often leave a lot of regret. Be like pair of low end equipment, traditional implementation method uses dc timing system commonly, the defect of executive plan is: Systematic ponderosity, power consumption is big, debug complex, maintain cost tall; Means respect is commanded in fixed position, use commonly read after taking journey switch signal, pass beforehand the orientation way that decelerate cooperates baric apply the brake, cut efficiency very low, the error is bigger. And to high-end equipment, use dc servo technology commonly, although precision and efficiency are able to assure, but the price is very high, product performance/price ratio hard satisfactory. Develop as the high speed of computer technology, automata technology and technology of vector frequency control, how to use performance/price ratio of advanced control technology construction to cut control system exceedingly goodly, it is the focus that people pays close attention to, report is amounted to to connected a company to offer the integral form a complete set that is based on a stage to amount to labour to control a product to dominate program for this in, better land solved the problem of existence. 3 be based on a stage to amount to what labour controls a product to cut out automation system 3.
Brief introduction of 1 control principle pursues 2 be based on a stage to amount to what labour controls a product to cut out if the graph is shown 2 times,solution of control system whole controls block diagram. The system uses transducer of coder, PLC, vector to form automation system to decide in order to achieve energy. Length fixed position uses a stage to amount to coder 500PPR and school to make the same score send makings roller to connect means continuously in order to come true accurate measure. School equal opportunity by 3.
7kW decelerate compares for 15: The drive of decelerate electric machinery of 1, what hold brake in the arms to overcome rolled steel compulsively to move with electromagnetism is inertial with benefit at be being machined of the object decide definitely. Use interface of feeling screen man-machine to go up as instruction and data the window of make known to lower levels, carry man-machine interface and DVP16EH00R news report, its data and instruction course PLC control spot device. In location system, because the stage amounts to EH built-in wide-open classical PID instruction, it is core with this instruction, can be in the process of PID operation, convenient apace at any time result of dynamic correction computation, all and crucial parameter such as P/I/D can be amended at any time, amend through controlling algorithmic trends, made up for asynchronous electric machinery to answer the inadequacy of lag. Use algorithm of dynamic PID successive fixed position, the vector transducer that makes be in speed mode to fall can control asynchronous electric machinery well and truly to locate. Below this algorithm, of transducer give rotate speed to be in metabolic condition, the 485 interface that take oneself by the RS-485 interface of the buy inside PLC and transducer finish speed to give with the high speed communication of 115200BPS detect with condition, replace original need to communicate the function that servo ability fulfils with low cost means, came true to cut long control well and truly. The feedback of signal of of all kinds DI of equipment of the spot in the system can make up Cheng controller to DVP-EH, come via outputting the result after operation carry out implement carry out the stable control with realizing on the safe side. 3.
Computation of 2 crucial data and diameter of roller of control program specification are 108mm, circumference is 3.
1415*108=339mm. Coder uses computation of 2 times frequency, criterion coder is enumerated precision is 339/1000=0.
339mm. Cut the time that every cut trigger to be 1s, roller drives plank to be able to satisfy a requirement with the speed of 30m/min. If press the time that accelerates the oldest rate to be 2s, decelerate is 2s computation to the time of 0, the time system that there is 60-8-4*8=20s inside a minute moves with top speed. A minute of distance that move is 20*30/60+30*4*8*0.
5/60=18m, can satisfy the requirement of minutely 2*8=16m. The computation frequency of PLC: (30*1000/0.
339) / 60=1475Hz<3kHz. The PLC that amounts to ES series with the stage can satisfy a requirement. Use rated rotate speed to compare for 1450r/min, decelerate for 15: The drive of decelerate electric machinery of 1, speed is 1450/15=96r/min. 108mm of roller axis diameter, linear velocity is 3.
1415*108*96/1000=32.
7m/min, be more than 30m/min of calculative top speed, of because this is OK contented requirement. The data of the parameter of set and PLC self-correcting is deposited at PLC drop report to preserve an area (EEPROM AREA) , can make sure data won't be missing; Batteries of equipment of man-machine bound mask is mothball data preserves an area (64K Byte) , can deposit important process history data; Man-machine interface can make processing 2 times to the data of PLC, if call the police to record and show,wait; In addition, return the design that can undertake according to the client's demand other appoints a requirement neatly. Monitor remotely to facilitate, can use EH patulous interface, enlarge strings together a mouth the 3rd times showpiece, realize Yuanduan and equipment to carry the double control of man-machine interface nearly. 3.
Each partial settings have system of consideration of sex of 3 on the safe side pushbutton of electric machinery operation, emergency stop button, the hand is moved, automatic choice. All transducer center installation to be inside control ark, PLC and man-machine interface are put on spot equipment, this kind of configuration can shorten the communication distance of PLC and man-machine interface, reduce transducer to be opposite weak cable system especially the interference of coder, raising communication dependability and control precision while the convenience sex that also improved an operation. Transducer and change, distribution facilities and signal equipment are far from, prevent strong report to be disturbed to small signal, raise precision. Ark of electric equipment distribution designs a consideration: (1) distribution system all is controlled alone to each loop, the design has circular wind cold, reserve power source, reserve pushbutton and directive, overhaul easily transform; (2) spot power source, interlocking power source and low-pressure power supply system all design available gas switch, can prevent the interact of power source short circuit; (3) power supply of 5 lines three-phase, line of distribution ark neutral and ground wire are apart, be helpful for interference rejection and operation person safety. 3.
4 field application and systematic design specification use vector transducer to reach 15: 1 decelerate electric machinery and electromagnetism hold brake in the arms to be overcome effectively inertial the influence to fixed position and the impulsive force that send makings plane, rose to cut into parts cut precision. The factor that affects precision is numerous, the interference that is like coder, electric machinery and even the axis implement the clearance between, even the axis implement bear unoccupied place, coder and watch 1 main control yuan, parts of an apparatus expresses Normal >normal MARGIN of serial number of 0cm 0cm 0pt"> : Normal > : Normal > : Normal > : Normal > : 0cm 0cm 0pt">1normal > blocks Normal >PG05normal >1 Normal > amounts to Normal >2normal MARGIN of transducer of vector of 0cm 0cm 0pt"> : 0cm 0cm 0pt">VFD055V43Anormal MARGIN of stage of 0cm 0cm 0pt">1: Stage of 0cm 0cm 0pt"> amounts to Normal >3normal MARGIN of resistor of brake of 0cm 0cm 0pt"> : 0cm 0cm 0pt">BR500W100normal >1 Normal > amounts to Normal >4normal >PLCnormal >DVP16EH00Rnormal MARGIN of stage of 0cm 0cm 0pt">1: Stage of 0cm 0cm 0pt"> amounts to Normal >5normal MARGIN of coder of 0cm 0cm 0pt"> : 0cm 0cm 0pt">ES3-05CG6941normal >1 Normal > amounts to Normal >6normal > feels Normal >DOP-A57BSTDnormal MARGIN of stage of 0cm 0cm 0pt">2: Stage of 0cm 0cm 0pt"> amounts to Normal >7normal >PLC expands calorie of Normal >DVP-F485Snormal >1 Normal > is amounted to even the axis implement the existence when moving between clearance, raw material and gyro wheel and stopping skids etc, for this, besides the high accuracy coder, vector transducer, electromagnetism that answers quickly is used to hold brake in the arms when the design, must reduce as far as possible when installation is debugged even the axis implement the back is unoccupied place, increase the attrition power between plank and roller. Suit to make send makings machine and school the speed photograph of equal opportunity, can sending makings machine and school to make the same score the method that the pit that dig the ground uses between machine to realize amortize, if send makings machine with the speed of 16m/s,expect, school equal opportunity is with 2m board cut, ask to leave the surplus of sufficient 2m. If dig 3m to grow, the ground hole with deep 2m, the surplus that just can satisfy 2m satisfies speed to match. But real spring is impossible to press a standard, also cannot hole of ground of bring into contact with is bottom, because this hole is bottom proper place is added install switch of a pair of photoelectricity, detect be restricted more signal, should exceed only be restricted to be started send makings plane, dig a 4m to grow to go to the lavatory, the ground hole with deep 3m can satisfy craft requirement. The main control that systematic place chooses yuan, parts of an apparatus is shown 1 times like the watch, the system designs what median must pay close attention to to have the following problems. (1) stage of vector transducer choice amounts to VFD-V series, this product has extremely high performance/price ratio, tie-in and high frequency wide response positional closed-loop control blocks PG05, the response that can improve asynchronous electric machinery greatly is characteristic; (2) stage of man-machine interface choice amounts to DOP-A series 5.
7 ′ La Bing touchs screen, this product exterior is elegant, development is used reach safeguard simple, in congener product performance/price ratio is extremely high, its powerful software function satisfies similar system completely to use requirement; (3) the station that coder chooses high accuracy, high reliability amounts to ES coder product, the grating of this product core piles up dish of laser that uses a stage to amount to patent to engrave the photoelectricity with corrode tie-in and patent technology to change a technology, make in make output pulse while edge shapes clean and the characteristic that maintained high frequency pulse to output won't be out of shape and be lost; (4) PLC amounts to EH series for the stage, this series product uses ASIC chip, process operation instruction with hardware means, rose to handle speed and dependability greatly, use small-sized PLC to be able to realize the function of medium-sized PLC. 4 last words are based on a stage to amount to labour to accuse the 460mm fabric width of product solution to become a board officer to make the same score system of plane shear automation, effect of the application after devoted production practice uses makes clear: (1) this plan is cut into parts cut precision tall, satisfy user requirement completely, the operation is used convenient; (2) make simple collocation can realize fast fixed length to control with transducer of asynchronous electric machinery, vector and high speed PLC, performance/price ratio is high, accord with actual project need, can satisfy market demand; (3) the frequency that can realize pair of vector transducer and asynchronous electric machinery with improvement PID algorithm is wide answer control. CNC Milling