CN102426437A - Open numerical control system - Google Patents
Open numerical control system Download PDFInfo
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- CN102426437A CN102426437A CN2011103811279A CN201110381127A CN102426437A CN 102426437 A CN102426437 A CN 102426437A CN 2011103811279 A CN2011103811279 A CN 2011103811279A CN 201110381127 A CN201110381127 A CN 201110381127A CN 102426437 A CN102426437 A CN 102426437A
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Abstract
The invention discloses an open numerical control system, which comprises CNC (computerized numerical control), a programmable logic device and a remote monitoring module. The CNC is connected with the remote monitoring module; the CNC is connected with the programmable logic device by a USB2.0 (universal serial bus 2.0) transceiver; and the programmable logic device is provided with an encoder signal input interface, a current signal interface and a power driving interface. The open numerical control system has a quick response speed, high reliability and good flexibility; the higher requirements in mechanical processing can be met better; and the usage safety and the efficiency of a numerical control machine are improved.
Description
Technical field
The present invention relates to the digital control system field, particularly relate to a kind of digital control system in open type.
Background technology
The machine tool numerical control system that one cover is complete is made up of several big hardware such as numerical control device (NC), drive system and pick-up unit, and wherein major control and running part are numerical control device and servo-drive system.The tradition servo-drive system receives only simulating signal, therefore needs numerical control device (NC) output analog control signal.And real numerical control device based on PC; The control function that is CNC (Computerized Numerical Control) is realized by software; CNC directly output be digital signal, in order to export analog signals to servo-drive system, also need be on PC extra exploitation D/A translation interface.Along with microelectric technique and development of computer; The modern servo system turns to digitizing gradually, and the CPU of Digital Servo System also can only receiving digital signals, and therefore this digital servosystem also needs could receive through an A/D conversion control signal of CNC again; Not only increased the hardware interface of digital control system; On the other hand, owing to passed through D/A and twice conversion of A/D, make the real-time command data of the position ring regulator output of CNC when being transferred to servo-drive system, produce error; Can influence the control performance of motor, be difficult to realize the real-time high-precision machining control.In addition, analog quantity voltage is interfered easily, causes the cutter translational speed to produce fluctuation, and the finished surface of workpiece is rough.
The method that in digital control system, realizes Direct Digital control at present mainly is a Fieldbus Control; But Fieldbus Based digital control system need be developed communication card equally on CNC; These integrated circuit boards must insert in the standard I SA/PCI slot of CNC, but the ISA/PCI EBI is complicated, and driver, hardware interface development difficulty are big; Cost of development is higher, and the construction cycle is also longer.Also need servo-drive system that corresponding field-bus interface is provided simultaneously.And multiple fieldbus and depositing on the market, can not intercom mutually between the dissimilar fieldbus, be difficult to satisfy the requirement of open digital control system.
Simultaneously, traditional numerically-controlled machine can't carry out efficient communication with the external world, can't satisfy the manufacturing networking, information-based requirement day by day, and be not easy to management, in case break down, needs to diagnose to the scene and safeguard, wastes time and energy.Particularly for the numerically-controlled machine that is distributed in the different location, the monitoring of its machining state and conditions of machine tool then need consume great amount of manpower, if can not in time foresee maintenance, then has certain potential faults.
Summary of the invention
The technical matters that the present invention mainly solves provides that a kind of response speed is fast, reliability is high, dirigibility is good, can better meet the requirements at the higher level in the machining, improves the numerically-controlled machine digital control system in open type with efficient safe in utilization.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of digital control system in open type is provided; Comprise CNC, PLD and remote monitoring module; Said CNC is connected with remote monitoring module, and CNC is connected with PLD through the USB2.0 transceiver, and said PLD is provided with code device signal input interface, current signal interface, power drive interface.
In preferred embodiment of the present invention, said remote monitoring module comprises industrial computer, network interface card, microprocessor and the PCI control card that links to each other successively.
In preferred embodiment of the present invention, also be provided with analog quantity input interface and analog output interface circuit on the said PLD.
In preferred embodiment of the present invention, also be provided with the stepper motor interface on the said PLD.
The invention has the beneficial effects as follows:
One, digital control system in open type of the present invention is realized communicating by letter between CNC and the PLD through the USB2.0 transceiver; Realized pure digi-tal control; Avoided fully pegging graft in the standard I SA/PCI slot in PC in the existing digital control system problem of the error that data conversion card and control data need produce through twice A/D and D/A conversion in transmission course; The response speed that makes machine tool numerical control system is faster, reliability is higher, can satisfy the higher demand in the machining better;
Two, adopt PLD as core devices; Can be integrated in PLD, solidify multiple servocontrol nuclear; Realize the dirigibility of control, the control command that can also send according to the CNC that the USB2.0 transceiver receives realizes intelligent flexibly control;
Three, through setting up remote monitoring module, merge Numeric Control Technology and network technology, realized digital control system and extraneous communication function; Through the digital control system remote monitoring module, can couple together the numerically-controlled machine that is distributed in the different location through network, and realize the numerically-controlled machine realtime monitoring through monitor terminal; In time understand each numerically-controlled machine process of manufacture and conditions of machine tool, realize the prevision maintenance, find potential faults early; When finding fault; Can diagnose thousands of miles away and safeguard through remote diagnosis system, drop to loss minimum, improve the safe in utilization and efficient of numerically-controlled machine.
Description of drawings
Fig. 1 is the perspective view of digital control system in open type one preferred embodiment of the present invention;
The mark of each parts is following in the accompanying drawing: 1, CNC, 2, PLD, 3, remote monitoring module; 4, USB2.0 transceiver, 5, the code device signal input interface, 6, the current signal interface; 7, power drive interface; 8, analog quantity input interface, 9, analog output interface circuit, 10, the stepper motor interface.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
As shown in Figure 1, the embodiment of the invention comprises:
A kind of digital control system in open type; Comprise CNC1, PLD 2 and remote monitoring module 3; Said CNC1 is connected with remote monitoring module 3; CNC1 is connected with PLD 2 through USB2.0 transceiver 4, and said PLD 2 is provided with code device signal input interface 5, current signal interface 6, power drive interface 7.
Be solidified with in the said PLD 2 be used for and USB2.0 transceiver 4 between carry out that data transmit, the usb communication control module of the serial/parallel conversion of the line data of going forward side by side; The control signal that is used for sending according to the usb communication controller is carried out servo-controlled servocontrol module to outside power device; The encoder output that is used for 5 transmissions of received code device signal input interface also converts the code device signal input control module that position signalling and rate signal pass to usb communication controller and servo controller respectively to, is used for the current detecting control module that the signal that the current signal interface sends is carried out digital filtering and current measurement.The servocontrol module of solidifying in the said PLD 2 can the more intense existing various servocontrol cores of integrated universal property; For example: it can integrated vector controller, in torque controller, electric current demodulator, speed regulator, SVPWM demodulator etc. one or several, satisfies dissimilar numerically-controlled machine motion control demands to reach.
This digital control system in open type has adopted powerful PLD 2; And usb communication controller and servo controller on this chip, have been solidified; When using; CNC1 sends the various control commands that comprise the position control order through USB2.0 transceiver 2 and gives PLD 2; PLD 2 obtains electric current and feedback speed signal through current signal interface 6 and code device signal input interface 5 respectively, sends drive control signal according to these signals to power drive interface 7 and realizes corresponding closed-loop control.
Said remote monitoring module 3 comprises industrial computer, network interface card, microprocessor and the PCI control card that links to each other successively, and remote monitoring module 3 is monitored external request, if receive monitored instruction; Promptly decode, and decoded monitored instruction is passed to CNC1, after CNC1 receives the monitoring application; Fill order, and read relevant information, and give remote monitoring module 3 with information feedback; Remote monitoring module 3 is encoded feedback information, and sends to industrial computer.
Also be provided with analog quantity input interface 8 and analog output interface circuit 9 on the said PLD 2, can the analog signal conversion of outside input be become digital signal.
Also be provided with stepper motor interface 10 on the said PLD 2, can control stepper motor.
The present invention has following advantage:
One, digital control system in open type of the present invention is realized communicating by letter between CNC1 and the PLD 2 through USB2.0 transceiver 4; Realized pure digi-tal control; Avoided fully pegging graft in the standard I SA/PCI slot in PC in the existing digital control system problem of the error that data conversion card and control data need produce through twice A/D and D/A conversion in transmission course; The response speed that makes machine tool numerical control system is faster, reliability is higher, can satisfy the higher demand in the machining better;
Two, adopt PLD 2 as core devices; Can be integrated in PLD 2, solidify multiple servocontrol nuclear; Realize the dirigibility of control, the control command that can also send according to the CNC1 that USB2.0 transceiver 4 receives realizes intelligent flexibly control;
Three, through setting up remote monitoring module 3, merge Numeric Control Technology and network technology, realized digital control system and extraneous communication function; Through the digital control system remote monitoring module, can couple together the numerically-controlled machine that is distributed in the different location through network, and realize the numerically-controlled machine realtime monitoring through monitor terminal; In time understand each numerically-controlled machine process of manufacture and conditions of machine tool, realize the prevision maintenance, find potential faults early; When finding fault; Can diagnose thousands of miles away and safeguard through remote diagnosis system, drop to loss minimum, improve the safe in utilization and efficient of numerically-controlled machine.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (4)
1. digital control system in open type; It is characterized in that: comprise CNC (1), PLD (2) and remote monitoring module (3); Said CNC (1) is connected with remote monitoring module (3); CNC (1) is connected with PLD (2) through USB2.0 transceiver (4), and said PLD (2) is provided with code device signal input interface (5), current signal interface (6), power drive interface (7).
2. digital control system in open type according to claim 1 is characterized in that: said remote monitoring module (3) comprises industrial computer, network interface card, microprocessor and the PCI control card that links to each other successively.
3. digital control system in open type according to claim 1 is characterized in that: also be provided with analog quantity input interface (8) and analog output interface circuit (9) on the said PLD (2).
4. digital control system in open type according to claim 1 is characterized in that: also be provided with stepper motor interface (10) on the said PLD (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103811279A CN102426437A (en) | 2011-11-26 | 2011-11-26 | Open numerical control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103811279A CN102426437A (en) | 2011-11-26 | 2011-11-26 | Open numerical control system |
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| Publication Number | Publication Date |
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| CN102426437A true CN102426437A (en) | 2012-04-25 |
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| CN2011103811279A Pending CN102426437A (en) | 2011-11-26 | 2011-11-26 | Open numerical control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391474A (en) * | 2014-11-21 | 2015-03-04 | 固高科技(深圳)有限公司 | Open type reconfigurable intelligent controller and method of reconfiguring intelligent controller |
| CN107544439A (en) * | 2017-10-17 | 2018-01-05 | 佛山伊贝尔科技有限公司 | Intelligent precise Compositions of metal-working machines production line integrated system |
Citations (5)
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| WO2007134442A2 (en) * | 2006-05-22 | 2007-11-29 | Thomas Gaasenbeek | Computerized digital controller for controlling a computer numerical control (cnc) machine |
| CN101178595A (en) * | 2007-12-13 | 2008-05-14 | 哈尔滨工业大学 | Drive and connecting apparatus of full digital numerical control system |
| CN201107641Y (en) * | 2007-12-28 | 2008-08-27 | 高波 | Full digital numerical control system |
| EP2110723A1 (en) * | 2008-02-11 | 2009-10-21 | Robert Bosch GmbH | Method for data transfer between CNC controllers |
| CN201556088U (en) * | 2009-12-04 | 2010-08-18 | 上海电气集团股份有限公司 | Open type numerical control system |
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2011
- 2011-11-26 CN CN2011103811279A patent/CN102426437A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007134442A2 (en) * | 2006-05-22 | 2007-11-29 | Thomas Gaasenbeek | Computerized digital controller for controlling a computer numerical control (cnc) machine |
| CN101178595A (en) * | 2007-12-13 | 2008-05-14 | 哈尔滨工业大学 | Drive and connecting apparatus of full digital numerical control system |
| CN201107641Y (en) * | 2007-12-28 | 2008-08-27 | 高波 | Full digital numerical control system |
| EP2110723A1 (en) * | 2008-02-11 | 2009-10-21 | Robert Bosch GmbH | Method for data transfer between CNC controllers |
| CN201556088U (en) * | 2009-12-04 | 2010-08-18 | 上海电气集团股份有限公司 | Open type numerical control system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391474A (en) * | 2014-11-21 | 2015-03-04 | 固高科技(深圳)有限公司 | Open type reconfigurable intelligent controller and method of reconfiguring intelligent controller |
| CN107544439A (en) * | 2017-10-17 | 2018-01-05 | 佛山伊贝尔科技有限公司 | Intelligent precise Compositions of metal-working machines production line integrated system |
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Application publication date: 20120425 |