CN108247153A - A kind of short electric arc NC processes monitoring system - Google Patents
A kind of short electric arc NC processes monitoring system Download PDFInfo
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- CN108247153A CN108247153A CN201810069851.XA CN201810069851A CN108247153A CN 108247153 A CN108247153 A CN 108247153A CN 201810069851 A CN201810069851 A CN 201810069851A CN 108247153 A CN108247153 A CN 108247153A
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- Prior art keywords
- short
- collecting card
- data collecting
- voltage
- electric arc
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/02—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
Abstract
The invention discloses a kind of short electric arc NCs to process monitoring system, mainly includes：Front-end acquisition device, data collecting card, digital control system and additional compensation axis；The front-end acquisition device is connected with the data collecting card, and the data collecting card transfers data to the digital control system, the additional compensation axis control Short arc machining process of digital control system control by Ethernet.A kind of short electric arc NC processing monitoring system of the present invention, pass through monitoring in real time and analyzing fetched data and carry out closed-loop control to voltage, electric current, the pressure of aqueous vapor medium, flow and cathode cutterhead size, reach the automation processing of short electric arc NC, cathode cutterhead is monitored in real time, additional compensation axis makes up the advantages of cutterhead consumes and obtains accurate dimension.
Description
Technical field
The present invention relates to short electric arc NC manufacture fields, and in particular, to a kind of short electric arc NC processes monitoring system.
Background technology
Short arc machining technology is the short electric arc generated using cathodic discharge come ablation anode metal or radio frequency material
A kind of cutting process of material, it belongs to special process industry EDM Technology scope.For ultrahard, extremely viscous, special crisp, high abrasion,
The difficult-to-machine materials such as flow harden also efficiently solve high hard, high viscous processing problem in semiconductor, non-metallic conducting material
Existing short electric arc NC process will appear short circuit, overcurrent, cutterhead consumption, electrode it is counter burn, burning, collision not
Good processing phenomenon, can cause workpiece be damaged or short arc power overburden work.
In order to avoid now defective generation, now need the bad phenomenon occurred in monitoring processing and make action response,
It avoids causing damages, while monitors the consumption of cathode cutterhead, consumed by additional compensation axis action to make up cathode cutterhead, so as to
Obtain accurate processing dimension.
Invention content
It is an object of the present invention in view of the above-mentioned problems, a kind of short electric arc NC processing monitoring system is proposed, with realization pair
The advantages of cathode cutterhead monitors in real time, and additional compensation axis makes up cutterhead consumption and obtains accurate dimension.
To achieve the above object, the technical solution adopted by the present invention is：A kind of short electric arc NC processes monitoring system, mainly
Including：Front-end acquisition device, data collecting card, digital control system and additional compensation axis；
The front-end acquisition device is connected with the data collecting card, and the data collecting card is by Ethernet by data
The digital control system is transferred to, digital control system handles data, and additional compensation axis is controlled to control Short arc machining process.
Further, the front-end acquisition device includes voltage sensor, Hall sensor, laser displacement sensor, gas
Flowmeter body, fluid flowmeter, gas pressure sensor and liquid-pressure pick-up.
Further, the voltage sensor, Hall sensor, laser displacement sensor, gas flowmeter, fluid flow
Meter, gas pressure sensor and liquid-pressure pick-up are connected with the data collecting card.
Further, the voltage sensor is acquired the voltage of Short arc machining power supply, and is isolated by voltage
Module and D/A converter module convert voltage, analog quantity voltage are converted into digital quantity signal, and be sent to data and adopt
Truck.
Further, the Hall sensor is acquired Short arc machining electric current, and current signal is converted to low electricity
Signal is pressed, voltage signal is then converted to digital signal again, and be sent to data collecting card.
Further, the laser displacement sensor is acquired cathode cutterhead size, and collected size is turned
It is changed to electric signal and is sent to data collecting card.
Further, the gas and liquid-pressure pick-up acquire water, gas medium pressure signal respectively, and are converted to electricity
The electric signal received is converted to digital signal by signal, data collecting card.
Further, the gas and fluid flowmeter acquire water, gas medium data on flows respectively, and are converted to telecommunications
Number, the electric signal received is converted to digital signal by data collecting card.
Further, the data collecting card and digital control system are communicated, all acquisition signals using 10-20mS as week
The quick of phase sends digital control system to, and digital control system receives data and analyzed, so as to judge machining state.
Further, the additional compensation axis moves integrally cathode assembly, electric current occurs when digital control system judges and processes
When situations such as overload, voltage short circuit, consumption of cathode cutterhead occurs, acted and solved by the forward and back of control compensation axis.
The advantageous effects of the present invention：
A kind of short electric arc NC processing monitoring system of the present invention, mainly includes：Front-end acquisition device, data collecting card,
Digital control system and additional compensation axis；The front-end acquisition device is connected with the data collecting card, and the data collecting card leads to
It crosses Ethernet and transfers data to the digital control system, the additional compensation axis control Short arc machining process of digital control system control.It is logical
Cross monitoring in real time and analyze fetched data to above-mentioned voltage, electric current, the pressure of aqueous vapor medium, flow and cathode cutterhead size
And closed-loop control is carried out, reach the automation processing of short electric arc NC, cathode cutterhead is monitored in real time, additional compensation axis makes up knife
The advantages of disk consumes and obtains accurate dimension.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that being understood by implementing the present invention.
Below by drawings and examples, technical scheme of the present invention is described in further detail.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
Example is applied together for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structure principle chart that a kind of short electric arc NC of the present invention processes monitoring system.
Specific embodiment
The preferred embodiment of the present invention is illustrated below in conjunction with attached drawing, it should be understood that preferred reality described herein
It applies example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, a kind of short electric arc NC processing monitoring system, mainly includes：Front-end acquisition device, data acquisition
Card, digital control system and additional compensation axis；The front-end acquisition device is connected with the data collecting card, the data collecting card
The digital control system is transferred data to by Ethernet, digital control system handles data, and controls additional compensation axis control
Short arc machining process processed.The front-end acquisition device includes voltage sensor, Hall sensor, laser displacement sensor, gas
Flowmeter body, fluid flowmeter, gas pressure sensor and liquid-pressure pick-up.
The voltage sensor, Hall sensor, laser displacement sensor, gas flowmeter, fluid flowmeter, gas pressure
Force snesor and liquid-pressure pick-up are connected with the data collecting card.
The voltage sensor is acquired the voltage of Short arc machining power supply, and passes through voltage isolation module and digital-to-analogue
Modular converter converts voltage, and analog quantity voltage is converted into digital quantity signal, and be sent to data collecting card.
The Hall sensor is acquired Short arc machining electric current, current signal is converted to low voltage signal, so
Voltage signal is converted to digital signal again afterwards, and is sent to data collecting card.Current acquisition can also use current divider.
The laser displacement sensor is acquired cathode cutterhead size, and is electric signal collected size conversion
It is sent to data collecting card.
The gas and liquid-pressure pick-up acquire water, gas medium pressure signal respectively, and are converted to electric signal, data
The electric signal received is converted to digital signal by capture card.
The gas and fluid flowmeter acquire water, gas medium data on flows respectively, and are converted to electric signal, data acquisition
The electric signal received is converted to digital signal by card.
The data collecting card and digital control system are communicated, and all acquisition signals are quick as the period using 10-20mS
Send digital control system to, digital control system receives data and analyzed, so as to judge machining state.
The additional compensation axis moves integrally cathode assembly, current overload, voltage occurs when digital control system judges and processes
When situations such as short circuit, consumption of cathode cutterhead occurs, the forward and back action that axis is compensated by control solves.
Operation principle：
Collected electric current (current range 0-4000A) signal 4-20mA electric currents are converted into using Hall sensor to believe
Number.Using voltage sensor collection voltages (voltage range 10-40V) signal, and be converted to 4-20mA current signals.Use laser
Sensor acquires cutterhead consumption data, and is converted to 4-20mA current signals.Using flowmeter to aqueous medium flow, pressure signal
It is acquired, and is converted to 4-20mA current signals.Capture card is acquired these three current signals and is stored in capture card
Register in, digital control system pass through Ethernet read register in data.
Overload current and overload voltage can be pre-set in digital control system, and sets threshold value of warning score ratio, such as is added
Work electric current be 4000A, machining voltage 25V, work pieces process be roughing when, can using setting electric current threshold value of warning percentage as
90%, voltage threshold value of warning percentage is 80%, i.e. processing electric current I is：
4000 × 0.9=3600A
Or voltage drop Vm:
25 × (1-0.8)=5V
Situation when, system alarm simultaneously reduces the depth of cut, if current or voltage still reaches early warning value, continues to reduce
The depth of cut, until stopping feed.When current overload or voltage drop are more than early warning value, then a short circuit phenomenon is assert, at this time system
Control compensation axis withdrawing, and close short arc power.
Aqueous vapor pressure limit is pre-set in digital control system, between 0.2-0.3MPa, atmospheric pressure exists aqueous medium pressure
Between 1.2MPa~3MPa；Aqueous medium flow is between 25L/min~50L/min, and throughput is in 1.5~3NM3Between/min,
When aqueous vapor pressure or flow exceed range of set value, system alarm simultaneously closes short arc power, protects workpiece.
Following advantageous effect can at least be reached：
A kind of short electric arc NC processing monitoring system of the present invention, mainly includes：Front-end acquisition device, data collecting card,
Digital control system and additional compensation axis；The front-end acquisition device is connected with the data collecting card, and the data collecting card leads to
It crosses Ethernet and transfers data to the digital control system, the additional compensation axis control Short arc machining process of digital control system control.It is logical
Cross monitoring in real time and analyze fetched data to above-mentioned voltage, electric current, the pressure of aqueous vapor medium, flow and cathode cutterhead size
And closed-loop control is carried out, reach the automation processing of short electric arc NC, cathode cutterhead is monitored in real time, additional compensation axis makes up knife
The advantages of disk consumes and obtains accurate dimension.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify to the technical solution recorded in foregoing embodiments or carry out equivalent replacement to which part technical characteristic.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (10)
1. a kind of short electric arc NC processes monitoring system, which is characterized in that mainly includes：Front-end acquisition device, data collecting card,
Digital control system and additional compensation axis；
The front-end acquisition device is connected with the data collecting card, and the data collecting card is by Ethernet by data transmission
To the digital control system, digital control system handles data, and additional compensation axis is controlled to control Short arc machining process.
A kind of 2. short electric arc NC processing monitoring system according to claim 1, which is characterized in that the front-end collection dress
It puts including voltage sensor, Hall sensor, laser displacement sensor, gas flowmeter, fluid flowmeter, gas pressure sensing
Device and liquid-pressure pick-up.
3. a kind of short electric arc NC processing monitoring system according to claim 1 or 2, which is characterized in that the voltage passes
Sensor, Hall sensor, laser displacement sensor, gas flowmeter, fluid flowmeter, gas pressure sensor and fluid pressure
Sensor is connected with the data collecting card.
A kind of 4. short electric arc NC processing monitoring system according to claim 2, which is characterized in that the voltage sensor
The voltage of Short arc machining power supply is acquired, and passes through voltage isolation module and D/A converter module turns voltage
It changes, analog quantity voltage is converted into digital quantity signal, and be sent to data collecting card.
A kind of 5. short electric arc NC processing monitoring system according to claim 2, which is characterized in that the Hall sensor
Short arc machining electric current is acquired, current signal is converted to low voltage signal, voltage signal is then converted to number again
Word signal, and it is sent to data collecting card.
6. a kind of short electric arc NC processing monitoring system according to claim 2, which is characterized in that the laser displacement passes
Sensor is acquired cathode cutterhead size, and collected size conversion is sent to data collecting card for electric signal.
7. a kind of short electric arc NC processing monitoring system according to claim 2, which is characterized in that the gas and liquid
Pressure sensor acquires water, gas medium pressure signal respectively, and is converted to electric signal, and data collecting card is the electric signal received
Be converted to digital signal.
8. a kind of short electric arc NC processing monitoring system according to claim 2, which is characterized in that the gas and liquid
Flowmeter acquires water, gas medium data on flows respectively, and is converted to electric signal, and data collecting card converts the electric signal received
For digital signal.
A kind of 9. short electric arc NC processing monitoring system according to claim 1, which is characterized in that the data collecting card
It is communicated with digital control system, all acquisition signals is sent to digital control system, digital control system by the quick of period of 10-20mS
It receives data and is analyzed, so as to judge machining state.
A kind of 10. short electric arc NC processing monitoring system according to claim 1, which is characterized in that the additional compensation
Axis move integrally cathode assembly, when digital control system judge process when occur current overload, voltage short circuit, cathode cutterhead consumption feelings
When condition occurs, the forward and back that axis is compensated by control acts solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069851.XA CN108247153A (en) | 2018-01-24 | 2018-01-24 | A kind of short electric arc NC processes monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069851.XA CN108247153A (en) | 2018-01-24 | 2018-01-24 | A kind of short electric arc NC processes monitoring system |
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| CN108247153A true CN108247153A (en) | 2018-07-06 |
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| CN201810069851.XA Pending CN108247153A (en) | 2018-01-24 | 2018-01-24 | A kind of short electric arc NC processes monitoring system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10217033A (en) * | 1997-01-29 | 1998-08-18 | Okuma Mach Works Ltd | Numerical control electric discharge processor |
| CN204621274U (en) * | 2015-05-21 | 2015-09-09 | 新疆短电弧科技开发有限公司 | A kind of short electric arc NC machine cathode assembly |
| CN105397214A (en) * | 2015-12-28 | 2016-03-16 | 新疆短电弧科技开发有限公司 | Numerically-controlled short-arc cutting machine tool |
| CN206689560U (en) * | 2017-04-06 | 2017-12-01 | 武汉科技大学 | Short arc machining automatic compensation controller |
-
2018
- 2018-01-24 CN CN201810069851.XA patent/CN108247153A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10217033A (en) * | 1997-01-29 | 1998-08-18 | Okuma Mach Works Ltd | Numerical control electric discharge processor |
| CN204621274U (en) * | 2015-05-21 | 2015-09-09 | 新疆短电弧科技开发有限公司 | A kind of short electric arc NC machine cathode assembly |
| CN105397214A (en) * | 2015-12-28 | 2016-03-16 | 新疆短电弧科技开发有限公司 | Numerically-controlled short-arc cutting machine tool |
| CN206689560U (en) * | 2017-04-06 | 2017-12-01 | 武汉科技大学 | Short arc machining automatic compensation controller |
Non-Patent Citations (1)
| Title |
|---|
| 刘权: "短电弧加工专用数控系统开发", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180917 Address after: 710000 -130, two floor, C block, 5 Lantian Road, Xi'an aviation base, Shaanxi Applicant after: Xi'an golden arc Aviation Technology Co., Ltd. Address before: 830011 4/F, 188 Gymnasium Lane, Urumqi Hi-tech Industrial Development Zone (New Urban District), Xinjiang Uygur Autonomous Region Applicant before: Xinjiang Short Electric Arc Technology Development Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180706 |