PLC applies mediumly in numerical control drilling machine

The precision of the bore of average drilling machine of 1 foreword tradition and efficiency are affected by the manpower element such as the worker's competence, fatigue degree bigger, want to achieve high accuracy and efficient very not easy. Be based on this problem, we developed numerical control drilling machine, it can work continuously according to the feed curve of the input, maintain from beginning to end high accuracy and efficient. Do 2 control ask the control of numerical control drilling machine asks to be: ? ? ) control a system to answer can adjust drilling machine program to choose; (2) the treatment career that different treatment level can choose to differ and treatment deepness. The feed curve when is like light locomotive trip the graph is shown 1 times, does the feed curve of treatment show: 2 times like the graph? ? ) main shaft rotate speed should adjustable, and limits should broad. (4) treatment precision is tall, treatment deepness error is less than 0.

05mm. Does the hardware design of 3 systems ask to configure hardware according to systematic control following: ? Does た Piao defeat?1 the: of interface of man-machine of · of S7-200 series Cpu222plc; of Xi Menzi company? Peripheral of · of post Zuo P210; : 2The pace enters sensor of 4 switch of 8 an an electric machinery of 2 electric machinery driver, three-phase, transducer, Em222, electromagnetism, photoelectricity and sensor of a Huo Er into 2 electric machinery, paces. Hardware structure of the system is shown 3 times like the graph. Nextpage3.

The I/o of 1 system dot allocation pursues knowable by hardware structure, the system needs 5 inputs dot and 14 output place. Cpu222plc has 8 inputs dot and 6 output place, because this needs to increase a patulous module, choose the number that exported at 8 o'clock measures patulous module Em222. Inputting a dot is I0.

0 ～ I0.

7; output dot is Q0.

0 ～ Q0.

5 with Q1.

0 ～ Q1.

7. Allocate a circumstance to see a table 1 with watch 2:3.

The crucial equipment of 2 controller system is Plc. Plc is with sheet piece machine for core, use technically at parts of an apparatus of computer of pilot of industrial procedure automation, have extremely high reliability and stability. This system chooses the S7-200 series Cpu222plc of Xi Menzi company to regard control as core, the output of high speed pulse of 2 independent 20khz that use Cpu222 will control a pace to take the campaign of electric machinery. Signal of pulse of this high speed cannot use direct drive pace to enter electric machinery, the ability after needing to enter electric machinery driver to magnify power through the pace is effective. Word of 5 a movement in martial arts measures an input to part to join with 5 sensor, use judgement broach position, the pace takes electric machinery place, the position of workpiece. In output of capacity of word of 14 a movement in martial arts, have 6 service will control a pace to take electric machinery drive, 8 service will control switch of electromagnetism a powerful person. This Plc machine has opening of a communication, for standard Rs-485 interface, in Plc and go up a machine when having communication, need to be Rs-485 interface changeover standard Rs-232 interface, cable of the segregation that can use Xi Menzi to offer Pc/ppi has transition. This cable has the switch that dial a code to be able to undertake installing. Going up after control software has written a machine admiral, download a program through this line and the moving circumstance of surveillant program. To reduce cost, a machine need not be used surely after been debug in the program undertake operate and be controllinged, use simple operation face plate however can, what this system chooses is Dp210 operation face plate. 3.

The peripheral of 3 systems is opposite according to the system the high demand of bore precision, choose a pace to control the treatment of aperture into electric machinery. The pace can arrive accurately into electric machinery a pulse, the precision in a pulse in this system is 0.

005mm. The pace is used at drive pace to enter electric machinery into electric machinery driver, dominate the action of broach thereby, the bore that finish. The pace receives the signal of Plc into electric machinery driver, include Cp pace to receive pulse signal, dir direction signal, signal of Free off line, the output after the result discharge grade that passes its interior and processing circuit arrives from the back connective two-phase pace enters electric machinery. The step produces corresponding action into electric machinery according to the change of signal. Electromagnetism a powerful person accepts the control signal that comes from Plc to produce an action directly. Additional, plc accepts the signal of sensor directly, the operation that adopts in-house program and logistic judgement will decide to output. Transducer uses the rotate speed that controls electric machinery of main shaft three-phase. The transducer in this system uses basic parameter operation pattern, come by potentiometer set running frequency, of transducer start and stop to be controlled by outside terminal. According to the characteristic of different workpiece, through rotating potentiometer changes the rotate speed of main shaft electric machinery, the signal of outside terminal exports control by the quantity of word of the 12nd a movement in martial arts of Plc. The software of 4 systems designs systematic software to include program of interactive interface Dp210 and system advocate control program Plc process. Dp210 program finishs operation personnel to be the same as the dialog between Plc, advocate the control that if handle an appearance individually,the mutual switch between operates the each key-press movement place are corresponding Plc program among the picture with every. Order picture wants to suit with the working flow photograph that produces the spot, the more the picture in front uses the picture with fast frequency the more. After Nextpageplc program receives the operation signal of Dp210, according to the job the requirement has the control of whole bore job. The flow chart of the main program is shown 4 times like the graph. Plc advocate the core control in controlling a process is the control that takes electric machinery to the pace, pace of the 1# that start is like a graph into the program of electric machinery 5, if the process that controls a pace to take electric machinery way pursues 6. The systematic operation that article place designs 5 last words is simple, treatment product range is wide, treatment precision is tall, already successful application is carried out at production in the center. This drilling machine has undertaken in some watchband manufacturer watchband bore is produced at present. Since since beginning production, the system moves stability, product quality rises significantly, percent defective drops apparently. In the meantime, huge reduced labor intensity of the worker, improved manufacturing efficiency. Return the drill that can be used at other nicety parts of an apparatus, the smallest aperture can be achieved 0.

5mm. CNC Milling