The stage amounts to the application of VE series transducer on CNC Machining center

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Summary: The article basically introduces what the stage amounts to VE transducer to go up in CNC Machining center to use a case. Keyword: CNC Machining center locates VE transducer stage amounts to pulse to give machine tool of 1 foreword numerical control is the crucial equipment of modern manufacturing industry, the manufacturing industry level that the crop of numerical control machine tool and technical level are in a country to go up to represent this state somehow and competition ability. The technical level of machine tool of our country numerical control, function and quality and foreign product still have very big difference quite. High-powered machining center and functional component great majority rely on an entrance. The concentration that machining center is numerical control technology is reflected, the market active, demand is exuberant, become the forward position that contends for with market of machine tool of prospective numerical control currently. Machining center is stock knife library can change automatically cutting tool, the number that undertakes to workpiece multitask foreword is machined controls a machine tool. After workpiece classics holds clip, the number controls a system to be able to control a machine tool to press different process, choose automatically and change cutting tool, rotate speed of main shaft of automatic change machine tool, feed and cutting tool assist function relative to the athletic contrail etc of workpiece, the ordinal workpiece that finish the treatment of foreword of the multitask on a few faces. The collect as a result of working procedure counteracts machining center to change a knife automatically, the outfit clip that reduced workpiece, measure and the machine tool is adjusted wait for time, the 8O ％ that makes the cutting time of the machine tool achieves time of machine tool actuate is controlled (general accuracy machine tool is 15 ～ only 20 ％ ) ; Also reduced the workpiece have enough to meet need between working procedure at the same time, carry and deposit time, shortened production is periodic, have obvious economic benefits. Machining center applies to spare parts appearance to compare complex, precision to ask taller, product changes frequent in small lot production. The first machining center was 1958 block the Buddhist nun by the United States - the company develops Teleike above all successful. It increased to trade knife unit automatically on the foundation of milling machine of boring of numerical control horizontal, milling can undertake after realizing workpiece to hold clip thereby, auger cut, boring, bore with a reamer is cut and the concentration of a variety of working procedure such as tap is machined. 20 centuries since 70 time, machining center gets developing quickly, appeared to be able to change main shaft case machining center, its stock the box of many of cutting tool much axis main shaft that can change automatically, can have poriferous treatment at the same time to workpiece. The form that foreword of this kind of multitask processes centrally also expanded machine tool of other type numerical control, for example turning center, it is in the configuration on numerical control lathe much each uses the device that change a knife, can control the coordinate of 3 above, outside dividing turning, main shaft can stop turn or graduation, and rotate by cutting tool undertake milling, auger cut, the working procedure such as aperture of bore with a reamer and tap, comfortable at machining part of complex turn coming back. Machining center presses main shaft decorate means cent to be vertical and horizontal two kinds. Horizontal machining center has graduation revolving stage or numerical control revolving stage commonly, can machine each flank of workpiece; The combination that also can make many coordinate moves, so that machine complex dimensional curved surface. Vertical machining center does not take revolving stage commonly, make end face treatment only. In addition, still have belt stand, lie the complex formula of two main shaft machining center, can adjust with main shaft lie of axis or vertical scroll of painting or calligraphy stand lie but mode machining center, they can have the treatment of 5 faces to workpiece. Of machining center change knife device automatically to be comprised with the orgnaization that change a knife by the knife library that deposits cutting tool. Knife library is a lot of more phyletic, have disk type and chain commonly two kinds. The size that chain knife inventory puts cutting tool is larger. The orgnaization that change a knife exchanges cutting tool between machine tool main shaft and knife library, it is manipulator commonly; Also have what do not take manipulator and exchange cutting tool with knife library directly by main shaft, say the type that do not have an arm trades knife unit. Be not cutting time to shorten further, some machining center deserve to two each move the splint that exchanges workpiece. One is installing workpiece to be machined on workbench, another assembles and unassemble outside workbench workpiece. After the machine tool finishs treatment to circulate automatic exchange splint, make assemble and unassemble workpiece and the time photograph coincide that cutting machines. System of drive of main shaft of drive of main shaft of machine tool of 2 numerical control is the high-power actuator of numerical control machine tool, its function is to accept numerical control system (the instruction of S code speed of CNC) and M code assist functional instruction, drive main shaft undertakes cutting is machined. The drive of main shaft can use communication frequency conversion or communication servo controls fashion 2 kinds, main shaft of general communication frequency conversion can infinitely variable speeds but cannot stop definitely, need is additional sensor of position of furnish main shaft, the logistic program that coordinates index of CNC system PMC (to accuse PLC) of the buy inside the system will finish stop speed control and fixed position stop definitely; Main shaft itself has communication servo to stop a function definitely namely, the axis of its oneself accuses PLC signal to be able to receive the PMC to CNC system one after another continuously, the program can finish the PMC logic that cooperates forthright to stop fixed position to control definitely, and latter control precision far outclass is former, at present so the system of main shaft drive of most machining center adopts communication servo main shaft. Reference communicates the function of servo main shaft, the driver of communication frequency conversion that the stage amounts to a company to develop new generation -- VE transducer, can mix completely besides function and function communication servo is rivalled, and still have versatility strong and the advantage on the price, the approbating that gets a client greatly through many second test and love. System of drive of main shaft of 3 frequency conversion that amount to VE 3.

1 system designs a requirement (1) the numerical control of function of VE series transducer and function is characteristic. Project client is CNC Machining center well-known company. Integrate the character of the client's requirement and machining center, the stage amounts to the high-powered transducer that develops technically for CNC Machining center----Function of VE series transducer and function dispute often suit to use what go up in CNC Machining center: · can realize fast sheet to choose location through exterior I/O dot, have the characteristic curve when special parameter adjusts fixed position and fixed position time, go to the lavatory to come true surely; · is adjusted through special parameter achieve the implementation that adds decelerate quickly; The PDFF with brand-new · is controlled, make the adjustment of gain goes to the lavatory more simply, master easily; · accepts imitate to measure signal and pulse signal, to going up the support of a machine is more overall. (2) configuration of test machining center: System of · numerical control: Taiwan new algebra accuses systematic SYNTEC 9401; Norms of · main shaft: 8kw/ of electric machinery of the Bo Hua that do not have stannum is the biggest frequency 600hz-12000rpm/6P/380V/450hz/25A, coder + 5V/GND/+A/-A/+B/-B/+Z/-Z/512ppr; · transducer norms: 075V43A-2+EMV-PG01L, software version 9.

98 test version, 1500W/75ohm of resistor of apply the brake. 3.

System of frequency conversion of 2 main shaft designs (1) transducer is electric design: Refer to a graph 1. Graph 1 transducer layout pursues 3.

Design stage of 3 transducer parameter (1) set electric machinery parameter transducer, condition of the motor-driven that make report is rectified oneself calm. Want to come out the high-powered play of VE series transducer, accurate electric machinery parameter is a foundation. Fill basic parameter transducer above all relevant position: And make with above parameter the control that make VF moves, particular case is expressed as follows, observation hind accords with electric machinery to run character. (2) solve an interesting project problem. In above data, electric machinery is rated rotate speed 05-03 is data plate of electric machinery manufacturer was not offerred, enquiring electric machinery manufacturer also is not very clear. Below this kind of circumstance, because electric machinery itself takes coder, pass VF control, move transducer 450hz, observe the R condition that offers in transducer, electric machinery is actual rotate speed is controlled for 8900rpm, fill measured data 05-03. Electric machinery is rated voltaic 25A, rated electric current has 075V43A-2 transducer only 18A, so can electromotor rated electric current as far as possible adjust the biggest (most greatly 21.

6A) fill 05-01 parameter. parameter 5-00=1, press face plate next " RUN " make trends rectify calm. Rectify parameter of the electric machinery after deciding to matter to the choice of coder direction for 11-01 parameter, if the setting is undeserved, criterion closed-loop control meets PG occurrence problem. 11-01 setting can pass the observation in condition of R of transducer face plate whether correctly, if R is to be worth state directional setting is proper, if be negative worth,state directional setting is contrary. (3) will control means instead Foc+pg, and adjust the biggest operation frequency and add slowdown time to use face plate to move. Above all F=550, the discovery after moving starts a process no matter or stop a process, when should outputting frequency to arrive at 450HZ to control not according to add slowdown time to change, change is very slow. When occurrence above phenomenon, can pass adjust parameter 11-05 (M1IdsRef Limit) will solve, 11-05 from leave factory be worth 90 instead 110 hind it is normal to add decelerate process. Graph 2 (F=590, 11-05=180) quicken a curve (4) make inertia appraise measure and ASR self-correcting. parameter 11-00=2, f=200HZ, 01-12=01-13=1, after positive and negative turns, measure so that inertia parameter is 49, later 11-01=1, observe electric machinery is rigid, make to corresponding parameter revise. (5) the setting of exterior I/O function: Refer to a graph 1, MI1 chooses location for sheet, MI2 is the first / the 2nd add slowdown time switch, when MI3 commands for pulse position the input makes can do only place to locate, FWD/MI1 closes, transducer makes fixed position motion. Be like next parameter to matter to the position quiting when the acute degree of fixed position and fixed position, the position that when adjusting the position, can quit main shaft to locate in need and the G condition value on observation face plate, in will observing so that G value fills 10-19 after definite place is proper; The acute degree of fixed position process is changed through adjusting 10-21/10-22, 10-21 is bigger, 10-22 is smaller, report is faster, fixed position course is shorter; 10-21 is smaller, 10-22 is bigger, report is slower, fixed position process is longer also. At present pulse control offers two kinds of mode: Speed mode and positional mode. Fall in speed mode when the job, need to give setting of frequency origin signal for pulse only, and according to go up offerred pulse signal setting gives a chance means; If transducer needs the job to command mode in pulse position, outside the parameter need setting that falls besides speed mode, still need those who cooperate FWD/MI1/MI2/MI3 of outside terminal signal to close. 3.

4Input of pulse of VE series transducer controls VE series transducer to support two kinds of pulse to input means: 1.

A/B photograph pulse is inputted; 2.

Pulse + directional input. Because new system offers pulse + output means of direction, can choose to be like a graph so 3 in the 3rd plant or the 4th kind of means; Make right finally choice according to square all along again next. Graph when 3 acceptance pulse input means to use pulse to control, still having two parameter also is very important: 1.

A of 10-17PG electron gear; 2.

B of 10-18PG electron gear. Its computation formula is frequency of pulse of rotate speed = / the check the number of coder (10-00) B of gear of electron of A/ of * electron gear. 3.

The 5 tests that impose decelerate character to sum decelerate character, make protective function above all adjust appropriately: 1-12=1, 1-13=5, f=590 from the 0 acceleration that quicken 590hz the actual measurement in the process quickens time for 1.

4s, in quickening, the biggest electric current is 19.

3A, the graph refers to a graph 4. Graph 4 quicken curvilinear 1-12=5, 1-13=5, f=590 is to time of slowdown of the actual measurement in the decelerate process of 0hz from 590hz decelerate 5.

1s, voltage of the biggest generatrix is 740VDC in decelerate, the graph is shown 5 times like the graph. Graph 5 quickly and center of CNC Machining of 4 last words is opposite decelerate curve main shaft has higher control demand, ask to wide range infinitely variable speeds comes true on the foundation in ability of large moment of force, strong overload above all, the implementation in asking to changing knife action automatically next decides angle to stop (stop) definitely namely, this makes system of drive of machining center main shaft compares average frequency control system or small-power communication to servo is designed in circuit and run parameter to rectify go up surely have greater difficulty. Be based on a series that amount to VE the requirement that the project of drive of frequency conversion of numerical control main shaft of high-powered transducer imposes decelerate character and fixed position function to be able to get used to machining center completely, sexual price is compared outstanding. CNC Milling