CN1558302A - Control system for numerical control machine tool - Google Patents
Control system for numerical control machine tool Download PDFInfo
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- CN1558302A CN1558302A CNA2004100011981A CN200410001198A CN1558302A CN 1558302 A CN1558302 A CN 1558302A CN A2004100011981 A CNA2004100011981 A CN A2004100011981A CN 200410001198 A CN200410001198 A CN 200410001198A CN 1558302 A CN1558302 A CN 1558302A
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Abstract
The control system for numerically controlled machine tool includes computer, machine tool motor, and the data exchange card connecting the computer and the machine tool motor. The computer includes one data input unit, one I/O control unit connected to the data exchange card, one command creating unit to convert the NC codes into motor command one by one, and one real-time control module to determine the NC code machining time and precise clock period of the created motor commands. The data exchange card converts the digital signal into analog signal transmitted to the machine tool motor, and the computer adopts Windows operation interface. The present invention has upper computer controlling the motion of mechanical apparatus directly and adopts typical Windows operation interface, can provides the user with rich information and graphs, and is very convenient.
Description
Technical field
The present invention relates to a kind of control system of numerically-controlled machine, particularly about a kind of numerically-controlled machine control system of under Windows operating system, working.
Background technology
Online cutting processing, Laser Processing and large-scale lathe, realized Digital Control in the equipment such as milling machine already, but, this Digital Control also just is confined to use single-chip microcomputer and realizes control as the computing machine of slave computer or use dos operating system, though solved real-time control like this to plant equipment, but its peripheral circuit complexity, need to rely on guidance panel as alternating interface between man and computer, normally adopt a large amount of action buttons, switch and pilot lamp, this just needs the professional to import the work order of more complicated, it is cumbersome to operate, and performance is not good sometimes, and system is safeguarded also inconvenient and is not easy classification.
At present, Windows operating system has replaced dos operating system and has obtained using widely in every field, but, because Windows operating system self can not provide the accurate clock period, and it is also relatively more difficult to conduct interviews to bottom hardware under the Windows system, therefore existing most numerically-controlled machine tools also are to use dos operating system, and this not only makes operation and maintenance all inconvenient, more the operation of machine tool personnel has been proposed than higher professional requirement.
In addition, also there is the plant equipment of only a few to use control system under the Windows operating system, it is that computing machine with Windows operating system is connected with single-chip microcomputer, computing machine is controlled plant equipment as host computer, single-chip microcomputer as slave computer, though this has solved the problem of real-time control, but its peripheral circuit is still complicated, also needs in the operation mcu programming, and is still inconvenient in actual use.
In addition, also have some then to select DSP (Digital Signal Process) chip for use, as control and computing in real time, it can carry out communication by computer bus with form simultaneously it, but its circuit and software complexity, the construction cycle is long and price is high.
In sum, how to solve in the Windows operating system, become to solve and used Windows operating system is carried out Digital Control to plant equipment key problem the real-time control problem of plant equipment.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of have very strong accuracy and real-time, do not need complicated peripheral circuit just can realize operating performance preferably, and control numerically-controlled machine control system easily.
For achieving the above object, the present invention takes following technical scheme: a kind of numerically-controlled machine control system, and it comprises: computing machine, machine motor connects the data exchange card of described computing machine and described machine motor; Described computing machine comprises: a data input cell, one connects the input and output control unit of described data exchange card, it is characterized in that: it comprises that also one can change the instruction generation unit that generates the motor instruction one by one with the NC code that described data input cell is carried, and the real-time control module that can determine the precision clock cycle between each motor instruction of NC code process time and generation; Described data exchange card is converted to analog electrical signal with digital signal and sends described machine motor to, and described computer interface adopts the Windows operation interface.
Be provided with the data feedback between described real-time control module and the described input and output control unit, be provided with interrupt instruction between described real-time control module and the described instruction generation unit and send control.
One feedback judging unit is set between described instruction generation unit and described input and output control unit, the rub-out signal that described machine motor feeds back to is converted to digital signal transfers by described data exchange card and gives input and output control unit, and transmits by the motor instruction of described feedback judging unit interrupt instruction generation unit to input and output control unit.
On described input and output control unit, connect an operation supervise and control unit, between the N of described feedback judging unit end and described real-time control module, be connected a unexpected processing unit, described operation supervise and control unit can be converted to the contact data of described input and output control unit and described data exchange card graphic presentation on described computer operation interface, and whether monitoring needs that described rub-out signal is sent into described unexpected processing unit and handle.
The present invention comprises that also one is arranged on the code interpreter unit between described data input cell and the described instruction generation unit.
The input mode of described data input cell is directly input or an input coordinate generation figure of figure.
Described computing machine adopts pci interface with being connected of described data exchange card, and described data exchange card adopts the standard industry interface with being connected of described machine motor.
The present invention is owing to take above design, it has the following advantages: 1, the present invention is without slave computer (as single-chip microcomputer etc.), but directly edit and process instruction in data input cell based on the computing machine of Windows operating system, and the instruction that will edit converts the motor instruction of the mechanical equipment moving of control in real time to, that is to say, skipped the information transmission between host computer and the slave computer, directly move by the PC control plant equipment, thereby solved the peripheral circuit complexity, during operation to problems such as mcu programmings.2, the present invention adopts the style at typical Windows interface on the interface, can provide abundant information and figure for the user, not only support operation such as copy, stickup to character, and the instruction code length of handling is restricted hardly, operating personnel only need directly just can realize operation of machine tool and control have been effectively reduced the technology specialty requirement to operating personnel in the face of computer screen; Simultaneously operating personnel can also be on computer screen carry out preview to the component shape that is about to processing etc., the situation in the process is monitored in real time, and interrupted processing at any time when going wrong, and operation is very easy.3, the present invention is provided with instruction generation unit and real-time control module, therefore after directly importing by data input cell or passing through code interpreter cell translation generation NC code, control module can be processed the needed time by calculating definite every NC code in real time, and in the instruction generation unit, pass through interpolation operation one by one with after the instruction of NC code conversion generation motor, provide precise time regularly by real-time control module, guarantee every time interval between the motor instruction, make in the processing and mistake can not occur, effectively solved and under Windows operating system, do not used single-chip microcomputer etc., just can realize the accurate real-time control problem of plant equipment.4, the present invention not only can utilize the various affluent resources of Windows fully owing to be to be operated under the Windows operating system, can also make up industrial network easily, realizes the monitoring of centralized operation, Industry Control patterns such as the management of integrated information.The present invention does not have complicated peripheral circuit, and simple to operation, it can be widely used in the control system of various numerically-controlled machines.
Description of drawings
Fig. 1 is a control flow chart of the present invention
Fig. 2 is an embodiment of operation interface of the present invention
Embodiment
As shown in Figure 1, the present invention mainly comprises computing machine 1, and machine motor 2 is connected the data exchange card 3 between computing machine 1 and the machine motor 2, and other carries out the utility appliance and the circuit of Machine-Tool Control.The operation interface of computing machine 1 adopts the Windows operation interface, control section mainly comprises data input cell 11, code interpreter unit 12, instruction generation unit 13, input and output control unit 14, feedback judging unit 15, unexpected processing unit 16 and operation supervise and control unit 17 embed a real-time control module 18 simultaneously in the The whole control flowchart process.
Real-time control module 18 of the present invention can adopt the programming technique of Windows multithreading, SHA (Sybera Hardware Access) the real-time software kernel that German SYBERA company is provided embeds in the control system of the present invention, by using self-defining message, can reach the purpose of in a plurality of threads, carrying out data communication.A thread sends message to another thread and realizes by operating system.Utilize the message-driven mechanism of Windows operating system, when a thread sent a message, operating system at first received this message, then this forwards was given the subject thread of this message, accepted the thread of message and must create message circulation.
On the stationary problem of thread, work even be under the jurisdiction of each thread of a process harmoniously.Multiple synchronization object is provided in MFC,, carries out the processing of thread synchronization as CEvent, CCriticalSection, CSemaphore, CMutex etc.The present invention adopts the CEvent class to carry out the processing of thread synchronization.
The CEvent class provides the support to incident.Incident is one and allows a thread when certain situation takes place, wakes the synchronization object of another one thread up.Incident tells how thread goes to carry out some given tasks, thereby makes a plurality of threads level and smooth.Each CEvent object can have two states: signal condition (signaled) and no signal condition (nonsignaled) are arranged.Thread monitors the state that is positioned at CEvent class object wherein, and takes corresponding operation corresponding the time.This has just formed the real-time control module 18 among the present invention.
Specific procedure is as follows:
1. use global variable to communicate
typedef?struct?ThreadInfo
{
CFrame?Wnd?*pMainFrame；
HANDLE?hSHATimer；
HANDLE?hSHAEvent；
bool?Stop?Timer；
}ThreadInfo；
ThreadInfo?Info；
2. define user self-defined message
#define?WM_SHATIMER(WM_USER+1)
3. call API (application programming interfaces) function of SHA, obtain the handle of Timer
Error＝ShaConnectTimer(0，4，NULL，NULL，szEventName，&Info.hSHATimer)；
4. create the object of CEvent class according to the Timer handle
Info.hSHA?Event＝OpenEvent(SYNCHRONIZE，FALSE，szEventName)；
5. create thread, start Timer
CreateThread(NULL，0，(LPTHREAD_START_ROUTINE)TimerThread，
&Info，0，&ThreadID)；
ShaStartTimer(Info.hSHATimer)；
6. realize thread function
void WINAPI TimerThread(LPVOID lpParam) { ThreadInfo *pInfo＝(ThreadInfo*)lpParam； for(；；) { WaitForSingleObject(pInfo-＞hSHAEvent，INFINITE)； ∷SendMessage(pInfo-＞pMainFrame-＞GetSafeHwnd()， WM_SHATIMER，0L，0L)； if(Info-＞StopTimer) break； } ShaStopTimer(pInfo-＞hSHATimer)； CloseHandle(pInfo-＞hSHAEvent)； <!-- SIPO <DP n="4"> --> <dp n="d4"/> ShaDisconnectTimer(pInfo-＞hSHATimer)； }
⑦LRESULT?CMainFrame∷OnShaTimer(WPARAM?wParam，LPARAM?lParam)
{
Handle above all unit;
return?0；
}
When control system of the present invention is operated, at first start real-time control module 18, it can be for each unit provides split hair time clock, and concrete control mode will further be illustrated in the following description.
In data input cell 11, operating personnel are the operation interface of application software directly, use the mouse figure to be processed that on screen, draws, also can finish figure to be processed by the keyboard input coordinate, can also directly import the NC code of the figure to be processed that computing machine can discern, and can pass through preview button at any time, the two-dimentional geometrical shape of preview in preview processing parts view area.
The graph data that will process etc. of input can application code Interpretation unit 12 be converted to the code that computing machine can be discerned, the direct entry instruction generation unit 13 if data input cell 11 is directly imported the NC code.
In instruction generation unit 13, the NC code is converted to the processing instruction of m bar motor by interpolation operation one by one, NC code difference, and the bar of the motor instruction that every NC code conversion becomes is counted m also may be different.Control module 18 can be processed needed time t by calculating definite every NC code in real time, and NC code different its process time of t also may be different; Simultaneously, in real time control module can be processed the instruction strip number m of needed time t and 13 conversions of instruction instruction generation unit according to every NC code, determines every time interval between the motor instruction, such as process time of article one NC code be t
1, it is converted to m
1The instruction of bar motor, the so time interval t of every motor instruction
1/ m
1Just be determined, that is the recurrence interval that instruction is sent just is determined.
Because control module 18 can be accurate to the time timing of 1 microsecond level in real time, therefore not only can be under Windows operating system, the invention provides precise time regularly, and can guarantee every time interval between the motor instruction, be specifically when the motor instruction of instructing generation unit 13 will be provided with the precise time timing sends to input and output control unit 14 one by one, control module 18 is also being supervised input and output control unit 14 and whether in the time interval that calculates data exchange card 3 is being exported in this motor instruction in real time.If input and output control unit 14 is not with motor instruction output in the time interval that calculates, control module 18 stops to send of next bar motor instruction with steering order generation unit 13 so in real time, have only after this motor instruction is sent by input and output control unit 14 smoothly, next bar motor instruction just can be sent, so just can avoid adding man-hour, machine motor 2 does not also machine in article one instruction, the processing mistake that the second instruction just begins.
Feedback judging unit 15 is arranged on after the instruction generation unit 13, is in order to send in instruction before the input and output control unit 14, earlier last instruction processing correctness will processing instruction to be judged.If correct (Y) is just enter input and output control unit 14; Wrong if (N), just the directly instruction of interrupt instruction generation unit 13 output, perhaps export, or, export by the instruction of real-time control module 18 interrupt instruction generation units 13 again by unexpected processing unit 16 by the instruction of real-time control module 18 interrupt instruction generation units 13.
Input and output control unit 14 sends the motor instruction to data exchange card 3, and data exchange card 3 can be converted to analog electrical signal to digital signal and send machine motor 2 to, with the control machine tooling.The feedback signal of machine motor 2 can be converted to digital signal by data exchange card 3 conversely and pass input and output control unit 14 back.The operation supervise and control unit 17 that is connected with input and output control unit 14 can obtain input and output control unit 14 and export to the data of data exchange card 3 and the data that data exchange card 3 feeds back to input and output control unit 14, can also calculate processing progress by the operation supervise and control unit, and be converted to figure and on computer screen, show.Operating personnel can understand the running status of whole processing by operation supervise and control unit 17, need to judge whether unexpected the processing, and carry out corresponding operating.
When feedback signal comprised rub-out signal, input and output control unit 14 can provide a look-at-me, directly stop machine motor and rotate, or directly halt instruction generation unit 13 continues move instruction; Also can send look-at-me to instruction generation unit 13 by feedback judging unit 15 or again by unexpected processing unit 16; After error exception, open real-time control module 18, whole flow process is carried out once more.
As shown in Figure 2, be an embodiment of operation interface of the present invention, it includes: graphics processing viewing area 21, current processing stand coordinate viewing area 22, processing start button 23, processing stop button 24, NC code editing area 25 and drop-down menu 26 etc.Graphics processing viewing area 21 shows the figure that the NC code of input converts to, when approving, operating personnel can process start button 23 with click, the processing beginning, the position that current processing stand coordinate viewing area 22 real-time demonstration cutters are processed, and graphics processing viewing area 21 also can demonstrate current Working position, in addition, operating personnel add man-hour also can be at any time with click processing stop button 24, then processing stops; In addition, can also directly drag the figure of mouse input desire processing in graphics processing viewing area 21, also can select input coordinate to be converted to the mode of figure by drop-down menu 26, corresponding N C code then generates at NC code editing area 25 places, the code at NC code editing area 25 places can directly be edited, more can duplicate, store, convenient later reusing.
Be example to cut circle below, sketch operating process of the present invention.
Start-up system is opened the NC file that has stored, reads in G (G code is a kind of of the NC code) code file that comprises the cutting circle, perhaps directly at the G code of the NC of screen display code editing area 25 by data input cell 11 these circles of input; Then, press the processing start button, program brings into operation, and carries out following steps:
1, starts real-time control module 18;
2, at the instruction generation unit G code is generated the data structure corresponding with circle, in this data structure, store the data such as central coordinate of circle of starting point, terminal point and this circle of this circle;
3, at the interpolation algorithm of instruction generation unit, the relevant data of this circle is converted into motor instructs according to circle;
4, calculate every time interval between the motor instruction by real-time control module 18;
5, by real-time control module 18 send with the time interval between every motor instruction that calculates be the time clock in cycle, guarantees that every motor instructs in the time interval that calculates, to send to machine motor;
6,, judge the running status of each machine motor 2 by feedback judging unit 15 and data exchange card 3; If operation is unexpected, stops the transmission of motor instruction and carry out the accident processing by unexpected processing unit 16.
Claims (10)
1, a kind of numerically-controlled machine control system, it comprises: computing machine, machine motor connects the data exchange card of described computing machine and described machine motor; Described computing machine comprises: a data input cell, one connects the input and output control unit of described data exchange card, it is characterized in that: it comprises that also one can change the instruction generation unit that generates the motor instruction one by one with the NC code that described data input cell is carried, and the real-time control module that can determine the precision clock cycle between each motor instruction of NC code process time and generation; Described data exchange card is converted to analog electrical signal with digital signal and sends described machine motor to, and described computer interface adopts the Windows operation interface.
2, a kind of numerically-controlled machine control system as claimed in claim 1, it is characterized in that: be provided with the data feedback between described real-time control module and the described input and output control unit, be provided with interrupt instruction between described real-time control module and the described instruction generation unit and send control.
3, a kind of numerically-controlled machine control system as claimed in claim 1, it is characterized in that: a feedback judging unit is set between described instruction generation unit and described input and output control unit, the rub-out signal that described machine motor feeds back to is converted to digital signal transfers by described data exchange card and gives input and output control unit, and transmits by the motor instruction of described feedback judging unit interrupt instruction generation unit to input and output control unit.
4, a kind of numerically-controlled machine control system as claimed in claim 2, it is characterized in that: a feedback judging unit is set between described instruction generation unit and described input and output control unit, the rub-out signal that described machine motor feeds back to is converted to digital signal transfers by described data exchange card and gives input and output control unit, and transmits by the motor instruction of described feedback judging unit interrupt instruction generation unit to input and output control unit.
5, as claim 3 or 4 described a kind of numerically-controlled machine control system, it is characterized in that: on described input and output control unit, connect an operation supervise and control unit, between the N of described feedback judging unit end and described real-time control module, be connected a unexpected processing unit, described operation supervise and control unit can be converted to the contact data of described input and output control unit and described data exchange card graphic presentation on described computer operation interface, and whether monitoring needs that described rub-out signal is sent into described unexpected processing unit and handle.
6, as claim 1 or 2 or 3 or 4 described a kind of numerically-controlled machine control system, it is characterized in that: it comprises that also one is arranged on the code interpreter unit that figure can be converted to the NC code between described data input cell and the described instruction generation unit.
7, a kind of numerically-controlled machine control system as claimed in claim 5 is characterized in that: it comprises that also one is arranged on the code interpreter unit that figure can be converted to the NC code between described data input cell and the described instruction generation unit.
8, a kind of numerically-controlled machine control system as claimed in claim 6 is characterized in that: the input mode of described data input cell is directly input or an input coordinate generation figure of figure.
9, as claim 1 or 2 or 3 or 4 or 7 or 8 described a kind of numerically-controlled machine control system, it is characterized in that: described computing machine adopts pci interface with being connected of described data exchange card, and described data exchange card adopts the standard industry interface with being connected of described machine motor.
10, as claim 5 or 6 described a kind of numerically-controlled machine control system, it is characterized in that: described computing machine adopts pci interface with being connected of described data exchange card, and described data exchange card adopts the standard industry interface with being connected of described machine motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100011981A CN100390688C (en) | 2004-02-04 | 2004-02-04 | Control system for numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100011981A CN100390688C (en) | 2004-02-04 | 2004-02-04 | Control system for numerical control machine tool |
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| Publication Number | Publication Date |
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| CN1558302A true CN1558302A (en) | 2004-12-29 |
| CN100390688C CN100390688C (en) | 2008-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100011981A Expired - Fee Related CN100390688C (en) | 2004-02-04 | 2004-02-04 | Control system for numerical control machine tool |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442181C (en) * | 2005-06-15 | 2008-12-10 | 上海福讯电子有限公司 | Numerical control SMT printing stencil laser cutting control method |
| CN101727104B (en) * | 2009-11-17 | 2012-03-07 | 东莞市润星机械科技有限公司 | Network transmission control system and method of digital control machine tool |
| CN102540967A (en) * | 2012-03-10 | 2012-07-04 | 苏州佰思迈信息咨询有限公司 | Numerical control (NC) machine control system |
| CN104460510A (en) * | 2014-12-09 | 2015-03-25 | 曹智军 | Online machine tool panel operation control method for numerically-controlled machine tool |
| CN107544509A (en) * | 2013-08-02 | 2018-01-05 | 上海联影医疗科技有限公司 | A kind of CT hospital bed controlling systems and method |
| CN112925266A (en) * | 2021-02-02 | 2021-06-08 | 深圳市显控科技股份有限公司 | G code generation method, device, equipment and storage medium based on general HMI |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5212645A (en) * | 1990-07-19 | 1993-05-18 | General Electric Company | Flexible real-time, multi-tasking architecture for tool condition monitoring |
| EP0824726A1 (en) * | 1995-04-19 | 1998-02-25 | Siemens Aktiengesellschaft | Process for operating a numerical control with critical-time and non-critical-time processes in a real time system |
| JPH11194809A (en) * | 1997-12-26 | 1999-07-21 | Mori Seiki Co Ltd | Maintenance management system for nc machine tool |
| JP3581259B2 (en) * | 1998-08-20 | 2004-10-27 | 株式会社ニッセー | Round die type rolling device control system |
| CN1339727A (en) * | 2001-09-24 | 2002-03-13 | 上海工程技术大学 | Computerized digital control system of laser metal surface enhanced processor |
| CN1218834C (en) * | 2002-11-28 | 2005-09-14 | 上海交通大学 | Control system of product line based on industrial computer for manufacturing air filter element |
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2004
- 2004-02-04 CN CNB2004100011981A patent/CN100390688C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442181C (en) * | 2005-06-15 | 2008-12-10 | 上海福讯电子有限公司 | Numerical control SMT printing stencil laser cutting control method |
| CN101727104B (en) * | 2009-11-17 | 2012-03-07 | 东莞市润星机械科技有限公司 | Network transmission control system and method of digital control machine tool |
| CN102540967A (en) * | 2012-03-10 | 2012-07-04 | 苏州佰思迈信息咨询有限公司 | Numerical control (NC) machine control system |
| CN107544509A (en) * | 2013-08-02 | 2018-01-05 | 上海联影医疗科技有限公司 | A kind of CT hospital bed controlling systems and method |
| CN107544510A (en) * | 2013-08-02 | 2018-01-05 | 上海联影医疗科技有限公司 | A kind of CT hospital bed controlling systems and method |
| CN107544509B (en) * | 2013-08-02 | 2021-07-09 | 上海联影医疗科技股份有限公司 | CT (computed tomography) sickbed control system and method |
| CN104460510A (en) * | 2014-12-09 | 2015-03-25 | 曹智军 | Online machine tool panel operation control method for numerically-controlled machine tool |
| CN104460510B (en) * | 2014-12-09 | 2018-10-23 | 曹智军 | A kind of online machine tool panel method of controlling operation thereof of numerically-controlled machine tool |
| CN112925266A (en) * | 2021-02-02 | 2021-06-08 | 深圳市显控科技股份有限公司 | G code generation method, device, equipment and storage medium based on general HMI |
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|---|---|
| CN100390688C (en) | 2008-05-28 |
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