CN104570932A - Acquisition and dumping method and system thereof for machining process data of numerical control system - Google Patents
Acquisition and dumping method and system thereof for machining process data of numerical control system Download PDFInfo
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- CN104570932A CN104570932A CN201410676707.4A CN201410676707A CN104570932A CN 104570932 A CN104570932 A CN 104570932A CN 201410676707 A CN201410676707 A CN 201410676707A CN 104570932 A CN104570932 A CN 104570932A
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
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Abstract
The invention discloses an acquisition and dumping method and a system thereof for machining process data of a numerical control system. The acquisition and dumping method comprises the following steps: setting the types of data to be acquired before machining is started, wherein the types of the data comprise instruction data inside the numerical control system; in the machining process, recording data corresponding to the types of the data to be acquired in a data buffer area by taking one control period of the numerical control system as a period; dumping the data in the data buffer area to other storage equipment through a communication interface. Compared with the prior art, the acquisition and dumping method can effectively make up the defect that the machining process cannot be comprehensively reflected through the numerical control system as internal instruction data of the numerical control system are acquired and the types of the acquired data are comprehensive; the data are continuously and periodically acquired, and sampling signals fed back from a sensor and the internal instruction data are synchronously acquired, so that the characteristics of machining tasks can be sufficiently reflected, and relatively direct and accurate basis is provided for analysis on the numerical control machining process.
Description
Technical field
The invention belongs to digital control system, machine tool technology field, more specifically, relate to the data acquisition of a kind of digital control system process, the method for dump and system thereof.
Background technology
In digital control processing, need the various real time datas gathering and record production scene, for production management personnel and live operator, real time monitoring, diagnosis and control are carried out to production run, there is important effect.Two classes are had to gather the method for NC Machining Process data at present; one class is the record by digital control system journal file; the event signal in NC Machining Process can only be gathered; as start, shutdown, startup, warning message, program to perform number, cutter number, cutter changing etc.; be be interrupted, discrete, the event signal of these noncontinuities can not be associated with processing tasks feature.
The more collecting method of another kind of employing is by sensor installation on lathe, builds data acquisition hardware platform, forms a set of Embedded data acquisition system independent of digital control system.As the Embedded data acquisition system based on ARM in " numerically-controlled machine and the research and development of Field Production Data acquisition system ", and publication number is in the patent of CN101587497B, for Siemens802D digital control system, based on the embedded service function data acquisition unit of microcomputer development, all belong to such acquisition method.The method can gather the continuous signals such as the physical location of the kinematic axis in process, but the director data of digital control system inside in NC Machining Process cannot be obtained, as the location of instruction, instruction speed etc., therefore the situations such as cutter sizes, process velocity, roughing and finishing are not known, cannot the characteristic rule of Accurate Analysis processing tasks.Such as, in process, spindle motor current increases, and exceedes the situation of rated current, belongs to normal condition when roughing is heavily cut, but just belong to abnormal conditions when finishing; In this case only by external sensor, and just cannot judge accurately machining state without digital control system built-in command.
Although publication number is refer to a kind of detection analytical equipment that can accept director data in the patent documentation of CN101758422A, but this director data is for detecting analyzing numerically controlled device technique index, the director data in process can not be gathered, and, this director data is off-line collection, digital control system is not arranged on lathe, by external device (ED), data command is received, can only be connected with digital control system by bus, digital control system director data must could be obtained when knowing bus protocol in advance, cannot be applied on lathe, also the director data in processing on real-time process cannot be gathered, the problem accurately judging digital control processing state can not be solved.Can only be connected with digital control system by bus, can not be applied on lathe, therefore can not gather processing on real-time process data; This detection analytical equipment is not be integrated in digital control system, still needs external circuit and external interface, needs to know that bus protocol could obtain digital control system director data.
Summary of the invention
For above defect or the Improvement requirement of prior art, the object of the present invention is to provide a kind of collection of digital control system process data, dump method and system thereof, wherein pass through its data collection type, gather and loading procedure etc. is improved, compared with prior art can not only gather the feedback signal of numerically-controlled machine sensor, effectively can also solve digital control system cannot the problem of acquisition and recording built-in command data, image data type is comprehensive, and the data gathered are cycle continuous print, and the sampled signal of sensor feedback and inner director data synchronous acquisition, fully can reflect the feature of processing tasks, can for providing foundation more directly and accurately to the analysis of NC Machining Process.The collection of data and dump can be carried out simultaneously, make digital control system can record long process data, are convenient to the analysis of various process.In addition, collection and the dump module of data are all integrated on numerical control device, do not need to add extra external circuit, easy to use.
For achieving the above object, according to one aspect of the present invention, provide a kind of collection of digital control system process data, dump method, it is characterized in that, comprise the following steps:
(1) before process starts, arrange the data type needing to gather, the data type of described needs collection comprises the sampled signal of sensor feedback and the director data of digital control system inside;
(2) in process, with the control cycle of a digital control system for data corresponding for the described data type needing to gather are recorded in data buffer area by the cycle;
(3) data in described data buffer area are dumped to other memory devices by communication interface;
The director data of described digital control system inside comprises program line number, the location of instruction of kinematic axis, instruction movement velocity, electric current loop export and one or more in feed-forward component.
As present invention further optimization, the sampled signal of described sensor feedback comprise in the feedback position of kinematic axis, vibration signal, current signal and temperature signal one or more.
As present invention further optimization, described step (2) also comprises the data directly showing and collect.
As present invention further optimization, described in described step (2), the director data of digital control system inside and the sampled signal of sensor feedback are synchronous recordings.
As present invention further optimization, the director data of described digital control system inside comprises program line number, for the director data of digital control system inside, the sampled signal of sensor feedback being mapped with the programming instruction of digital control system.
As present invention further optimization, described step (2) and step (3) can be carried out simultaneously, and the dump cycle in step (3) is greater than the collection period of step (2).
As present invention further optimization, data described in described step (3) are with text or the dump of binary data file form.
As present invention further optimization, described step (1)-(3) are all directly carried out in digital control system.
According to another aspect of the present invention, provide a kind of collection of digital control system process data, dump system, it is characterized in that, this collection, the dump system integration, in digital control system, comprise data cycle acquisition module and batch data sending module, wherein:
The sampled signal of the director data collected and sensor feedback for the sampled signal of the director data and sensor feedback that gather digital control system inside, and is stored in the data buffer area of described digital control system by described data cycle acquisition module;
Described batch data sending module is used for the sampled signal data Batch sending of the director data in described data buffer area and sensor feedback to other memory devices.
As present invention further optimization, the director data of described digital control system and the sampled signal of sensor feedback are synchronous acquisition.
By the above technical scheme that the present invention conceives, compared with prior art, owing to embedding corresponding sampling functions module in digital control system inside, not only can pick-up transducers feedback data, can also digital control system send to the periodicity director data of topworks (i.e. the director data of digital control system inside) also synchronous recording get off, by gathering digital control system built-in command data, the data type gathered is comprehensive, effectively can make up the defect that existing digital control system cannot reflect process comprehensively.Data are for pressing cycle continuous acquisition, and the sampled signal of sensor feedback and inner director data synchronous acquisition; The director data of digital control system inside comprises program line number, program line number can be used for the director data of digital control system inside, the sampled signal of sensor feedback to be mapped with the programming instruction of digital control system, thus the corresponding relation can set up between the variation characteristic of the system state that data reflect and Machining Instruction, fully can reflect the feature of processing tasks, can for analyzing numerically controlled process, judge that Processing Quality of NC Machining provides foundation more directly and accurately.The dump of data can be realized by modes such as such as digital control system multitask controls, data acquisition and data dump are carried out simultaneously, make the dump of data not affect digital control processing and data acquisition, thus realize the long-time continual record of process data; The data dump cycle is greater than data collection cycle, and data can with multiple sampling period for the dump cycle carries out batch dump.By being integrated in the data acquisition system (DAS) in digital control system, and arrange corresponding functional module (as, data cycle acquisition module, batch data sending module, data type are arranged and dump arranges module) and relative users use interface, the collection of data and dump module are all integrated on numerical control device, do not need to add extra external circuit, easy to use.Because the data collection cycle of process data is identical with the control cycle of digital control system, do not need other data communication protocols can simple by the data acquisition of required collection in the data buffer area of digital control system.
Accompanying drawing explanation
Fig. 1 is the process data acquisition that proposes of the present invention and dump process flow diagram;
Fig. 2 is external data acquisition method and collecting method of the present invention contrast schematic diagram;
Fig. 3 is digital control system data acquisition principle schematic in the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
Embodiment 1
With reference to accompanying drawing 1, the process data acquisition that the present invention proposes and dump process flow diagram, mainly contain three steps, step one is the process data type arranging collection in data acquisition interface, step 2 is recorded in the data buffer area of numerical control device by process data in process, and step 3 is in other mass-memory units by the process data dump in numerical control device data buffer area.
The attached contrast schematic diagram that Figure 2 shows that generic outer collecting method and collecting method of the present invention, the wherein corresponding generic outer collecting method of upper figure, the corresponding collecting method of the present invention of figure below.Digital control system controls servo-drive system with director data, and these director datas are transmitted by pci bus, is closed, does not have outside fetch interface, and therefore general collecting method cannot gather the director data of digital control system inside.Collecting method more is at present by sensor installation on lathe, build data acquisition hardware platform, form a set of Embedded data acquisition system independent of digital control system, but the method can only gather the outside IO interface data of digital control system and sensor feedback data.Accompanying drawing 2 figure below is depicted as collection, the dump method of a kind of digital control system process data that the present invention proposes, by data acquisition system (DAS) is integrated in digital control system, and the corresponding data flow changing digital control system, the feedback signal of tool sensor can not only be gathered, and can synchronous acquisition digital control system process director data.
Data acquisition system (DAS) in the present invention is integrated in digital control system, the corresponding with it collection, the dump method that have a kind of digital control system process data, in order to realize the method, major design develops following functions module: data cycle acquisition module, batch data sending module, data type are arranged and dump arranges module.As shown in Figure 2, wherein data cycle acquisition module and batch data sending module are integrated on the controller of digital control system, the effect of data cycle acquisition module is between digital control system and servo-drive system, set up digital independent interface, break original closed state, make to become and can gather in a part of digital control system director data and sensor feedback data; The effect of batch data sending module be data cycle acquisition module by cycle, continual record data while, controlled by digital control system multitask, the batch data that data cycle acquisition module in process collects is dumped in other memory devices, thus realizes the long-time continual record of process data.Data type setting and dump arrange module and both can be integrated in digital control system, also can be arranged separately on the PC under Windows environment, can arrange following major function or interface accordingly: (1) communication protocol arranges interface; (2) data collection type arranges interface; (3) sampling starts and closing function; (4) the real-time display interface of data in gatherer process; (5) data dump position and dump formatting interface.
Data type setting and dump arrange each interface of module and mainly contain following effect: 1) communication protocol arranges interface, the IP address of this module can be arranged in this interface, set up the communication connection between digital control system and the outer mass-memory unit (as PC, server) of system; 2) data collection type arranges interface, can select the port number of image data on the surface, and the image data type that each passage is corresponding; 3) sampling starts and closing function, is used for the time that control data collection starts and terminate; 4) the real-time display interface of data in gatherer process, can select a part of process data, and display in real time on the surface, carries out the monitoring of data in gatherer process; 5) data dump position and dump formatting interface, data dump position is for the convenience of the users by the assigned address of image data stored in mass-memory unit, and the data gathered can be preserved with binary data or text by dump formatting.
Accompanying drawing 3 is digital control system data acquisition in the present invention, dump procedure principle schematic.In NC Machining Process, after digital control system reads job sequence, digital control system controls servo-drive system in instruction (as the location of instruction, instruction speed, instruction moment) mode, and the signal feedback such as physical location (i.e. the feedback position of kinematic axis), actual speed, actual current is shown to digital control system by sensor by servo-drive system in real time.Will lose after instruction and these real time datas of sensor feedback signal use, therefore need to be recorded in the data buffer area of numerical control device by these real time datas in seasonal effect in time series mode by data cycle acquisition module, the sampling period must be identical with the control cycle of digital control system.A lattice in Fig. 3 in data buffer area represents the data that sampling period gathers, and a sampling period can gather the data of multiple passage, the corresponding data type (location of instruction etc. as X-axis) gathered of each passage simultaneously.Sampling channel number can be arranged as required, and digital control system can calculating sampling task occupying system resources situation automatically, and carries out sampling channel remaining or prompting of transfiniting.
Due to the data buffer area finite capacity of numerical control device, buffer area data are that circulation stores, if a large amount of processing on real-time process data not in time unloading is gone out and will, by new data cached covering, therefore be needed batch data sending module the data in buffer area to be sent.
Data type is arranged and dump arrange module can from the data conversion storage will sent out buffer area to digital control system outside in other mass-memory units, as PC, server.Batch dump is (namely in units of multiple sampling period for the dump of data, the dump cycle can be multiple sampling period, a dump can the data that collect of the multiple collection period of dump), dump is by being that communication interface (as netting twine etc.) realizes data dump.The unloading cycle depends on the communication cycle of digital control system and memory device, and can be a few tens of milliseconds, the unloading cycle must be greater than the sampling period.Owing to there being data conversion storage, long-time continual data acquisition and storage in process can be realized.The management of process data can be realized, for customer analysis inquiry and the backup of related data in other mass-memory units.
The process data acquisition that the present invention proposes and dump method have two kinds of implementations: one is data cycle acquisition module, batch data sending module, data type are arranged and dump arranges module and is all integrated in digital control system; Another kind is data cycle acquisition module, batch data sending module is integrated in digital control system, and data type is arranged and dump arranges module and is arranged separately on the PC that to carry out with digital control system communicating.
Process 5 axle job sequences for the second implementation below, concrete sampling process is described, as follows:
(1), by numerical control device be communicated with PC netting twine, and IP address (such as, being arranged interface etc. by communication protocol) is set, set up the exact connect ion of digital control system and PC;
(2) data type of collection, is set gradually (such as, interface is set by data collection type), the data type that can gather has: program line number, the kinematic axis X, Y, Z axis location of instruction, turning axle B, C axle location of instruction, kinematic axis X, Y, Z axis physical location, turning axle B, C axle physical location, the speed of mainshaft, spindle motor current etc. 13 class data, corresponding 1 passage of each class data;
(3), the display data type of Choice and process process median surface window, shown data type can be all or part of of image data type, such as, program line number, kinematic axis X, Y, Z axis physical location, spindle motor current etc.;
(4), on numerical control device interface select the nc program of five axles, starting sampling (such as, starting switch by opening sampling), then pressing digital control processing loop start button, starting NC Machining Process;
(5) control cycle, in digital control system process is 1ms, sampling tool (such as, data cycle acquisition module) sampling period of gathering the director data of digital control system and the sampled signal of sensor feedback is 1ms, by process data acquisition in the data buffer area of numerical control device, and interfaces windows can be shown to according to arranging of step 3 simultaneously;
(6), machine after, close sampling (such as, by close sampling start switch);
(7), the process data in data buffer area are arranged module with the form of text by dump to be dumped in the disk file of PC.
Three axles or other job sequence operating process identical with above-mentioned steps.
By capture program line number, process data message can be corresponded in job sequence.
The data acquisition of the present embodiment and dump are all realized on the operation interface of numerical control device by each functional module of data acquisition system (DAS), do not need extra external data Acquisition Circuit, and except the data of energy pick-up transducers feedback, the director data of digital control system inside can also be gathered.Be compared to other collecting methods, as the Embedded data acquisition system based on single-chip microcomputer or DSP, the method that this invention uses is more convenient.
The process data type gathered can be arranged according to the needs of user oneself, once can gather the data of multiple passage, both only can gather a certain class data in process, and also can several data gather simultaneously.In addition, can also directly show the data collected, machining state is monitored in real time.
Due to data cycle acquisition module and Batch sending Module-embedding digital control system inside, not only can pick-up transducers feedback data, can also digital control system send to the periodicity director data of topworks also synchronous recording get off, namely directly can obtain process data from digital control system inside, the data of the process that can record more comprehensively.And due to stored digital control system director data and external sensor data are synchronous recordings, verily record the program line number of process data, thus the corresponding relation between the variation characteristic of the system state that data reflect and Machining Instruction can be set up.Further, because data collection cycle is synchronous with digital control system control cycle, the communication protocol without the need to complexity can realize the collection of data; And on the other hand, the collection of data and dump not by numerical control device disk file, but utilize the internal memory cache region of system, data are directly carried out dump again stored in behind the data buffer area of digital control system inside.And data acquisition module and batch data sending module can work (that is, data acquisition and data dump can be carried out) simultaneously simultaneously, long process data can be recorded, be convenient to the analysis of various process.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the collection of digital control system process data, a dump method, is characterized in that, comprise the following steps:
(1) before process starts, arrange the data type needing to gather, the data type of described needs collection comprises the sampled signal of sensor feedback and the director data of digital control system inside;
(2) in process, with the control cycle of a digital control system for data corresponding for the described data type needing to gather are recorded in data buffer area by the cycle;
(3) data in described data buffer area are dumped to other memory devices by communication interface;
The director data of described digital control system inside is program line number, the location of instruction of kinematic axis, instruction movement velocity, electric current loop export and one or more in feed-forward component.
2. the collection of digital control system process data as claimed in claim 1, dump method, it is characterized in that, the sampled signal of described sensor feedback comprise in the feedback position of kinematic axis, vibration signal, current signal and temperature signal one or more.
3. the collection of digital control system process data as claimed in claim 1, dump method, it is characterized in that, described step (2) also comprises the data directly showing and collect.
4. the collection of digital control system process data as claimed in claim 1, dump method, it is characterized in that, described in described step (2), the director data of digital control system inside and the sampled signal of sensor feedback are synchronous recordings.
5. the collection of digital control system process data as claimed in claim 1, dump method, it is characterized in that, the director data of described digital control system inside comprises program line number, for the director data of digital control system inside, the sampled signal of sensor feedback being mapped with the programming instruction of digital control system.
6. the collection of digital control system process data as claimed in claim 1, dump method, it is characterized in that, described step (2) and step (3) can be carried out simultaneously, and the dump cycle in step (3) is greater than the collection period of step (2).
7. the collection of the digital control system process data as described in claim 1-6, dump method, is characterized in that, data described in described step (3) are with text or the dump of binary data file form.
8. the collection of the digital control system process data as described in claim 1-7, dump method, is characterized in that, described step (1)-(3) are all directly carried out in digital control system.
9. the collection of digital control system process data, a dump system, it is characterized in that, this collection, the dump system integration, in digital control system, comprise data cycle acquisition module and batch data sending module, wherein:
The sampled signal of the director data collected and sensor feedback for the sampled signal of the director data and sensor feedback that gather digital control system inside, and is stored in the data buffer area of described digital control system by described data cycle acquisition module;
Described batch data sending module is used for the sampled signal data Batch sending of the director data in described data buffer area and sensor feedback to other memory devices.
10. the collection of digital control system process data as claimed in claim 9, dump system, it is characterized in that, the director data of described digital control system and the sampled signal of sensor feedback are synchronous acquisition.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109783064A (en) * | 2017-11-13 | 2019-05-21 | 华中科技大学 | A kind of intelligent use integrated development system based on big data |
| CN109783064B (en) * | 2017-11-13 | 2021-02-02 | 华中科技大学 | Intelligent application integration development system based on big data |
| CN110858125B (en) * | 2018-08-24 | 2021-07-02 | 华中科技大学 | Industrial data acquisition and storage method and system for numerical control system |
| CN111308959A (en) * | 2020-03-04 | 2020-06-19 | 武汉华中数控股份有限公司 | Numerical control machine tool monitoring system and method based on instruction domain data synchronization |
| CN113386386A (en) * | 2021-07-06 | 2021-09-14 | 上海海得控制系统股份有限公司 | Punch data acquisition method, system, medium and device of rotary high-speed tablet press |
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