CN101135895A - Control method for bar stock saw cutting self-adapting precision baiting - Google Patents
Control method for bar stock saw cutting self-adapting precision baiting Download PDFInfo
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- CN101135895A CN101135895A CNA2007100927597A CN200710092759A CN101135895A CN 101135895 A CN101135895 A CN 101135895A CN A2007100927597 A CNA2007100927597 A CN A2007100927597A CN 200710092759 A CN200710092759 A CN 200710092759A CN 101135895 A CN101135895 A CN 101135895A
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- blanking
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Abstract
The method comprises: using a bar stock saw automatically-adaptive lay- off system. The method comprises: a horizontal AC servo drive system is used for realizing the rod feed; a highly-accurate photoelectric encoder is used to detect the amount of fed rod; a grating shifting sensor is used to detect the height value of front end of the rod; a vertical AC servo drive system is used to adjust the height of the rear end of the rod to keep the consistency between the front end and the rear end of the rod; a highly-accurate weight sensor is used to weigh the actual weight G of the rod and to compare the actual weight of rod with the reset value, and according to the difference Delta G to adjust the cutting length.
Description
Technical field
The present invention relates to a kind of control method of metal material sawing processing, particularly a kind of control method of metal bar material saw cutting self-adapting precision baiting.
Background technology
Employing comprises that it is profiled member that bars such as round steel or fillet square steel carry out accurate hot forging, and the bar of diameter more than 100～150 millimeters particularly, precise blanking are essential condition and the prerequisites that realizes its precise forming.At present, the isometric bar of many both at home and abroad employing sawings reaches blanking in constant weight, because the external bar dimensional accuracy of using is higher, can satisfy request for utilization substantially by the equal length blanking; Cross sectional shape and the bigger problem of size difference that the domestic bar that also has the method that adopts measurement bar diameter and control bar length to solve domestic production exists, reach blanking in constant weight, but for the big situation of the bar flexibility of domestic use, do not control the device and the corresponding method of bar flexibility in this method, because the roller height of feeding is constant, cause bar cross section and bar out of plumb after the sawing, the actual weight error of bar is bigger after the blanking, what actual cutting stock precision did not reach far that this method is scheduled to improves 5～6 times index than the precision of equal length blanking, the actual effect of using is also bad, is difficult to satisfy the precise forming requirement.
Raising along with domestic bar processing technology, the homemade bar that uses improves a lot on cross sectional shape and dimensional accuracy now, the equal length blanking can be satisfied request for utilization substantially, but because bar is long, general long about 6 meters, weight is heavier to reach 600～1500 kilograms, causes the flexibility of bar still bigger in production, loading and unloading, transportation inevitably; Though the length range of blanking is generally less than 0.4 meter, the flexibility of the bar of the cutting-out of crouching is less relatively, but long bar is lifted on the blanking transport sector of sawing machine, when clamping the leading section of bar by the feeding chuck, usually the two ends of bar down, the bent intermediate section up, make that the height at the height of bar its front end in whole blanking process and feeding chuck place is inconsistent, and be sawing place near feeding chuck outside, in fact still there are the bar cross section and the bar out of plumb of long bar after sawing, the bigger problem of actual weight error of bar after the blanking.
Summary of the invention
The object of the present invention is to provide a kind of bar cross section that can make vertical, the control method of the bar stock saw cutting self-adapting precision baiting that cutting stock precision is high with bar.
The object of the present invention is achieved like this: a kind of control method of bar stock saw cutting self-adapting precision baiting, it has used a kind of by sawing machine, horizontal AC servo drive system, vertical AC servo drive system, high precision photoelectric scrambler, grating displacement sensor, PLC programmable controller, touch man-machine interface, the bar stock saw cutting self-adapting precision baiting system that the high-precision weighing sensor constitutes is characterized in that adopting following controlled step:
A, start start the bar blanking system, by touching the sectional area S and the cutting stock weight G of man-machine interface input bar
Set, the PLC programmable controller is according to the sectional area S and the cutting stock weight G of bar
SetCalculate the cutting length L of bar,
Cutting length L=G
Set/ (density P * sectional area S);
B, the horizontal AC servo drive system of PLC programmable controller controls realizes the bar feeding, the high precision photoelectric scrambler detects the bar amount of feeding, simultaneously grating displacement sensor constantly detects the front end place of bar and the bar height value at feeding chuck place, and send measured value to the PLC programmable controller, the PLC programmable controller judges according to measured value whether bar is consistent at the height value at this two place, if error is arranged, vertical AC servo drive system starts, adjust the height of bar rear end, guarantee the front end place of bar in the feeding process and bar height unanimity at feeding chuck place;
C, when the feeding displacement reaches the cutting length L of bar, automatically feed-disabling starts sawing machine sawing bar simultaneously;
After d, bar stock saw cutting finished, the high-precision weighing sensor was with the actual weight G of the bar under the sawing of measuring
ActualBe sent to the PLC programmable controller, the PLC programmable controller is according to cutting stock weight G
SetWith actual weight G
ActualDifference DELTA G
ErrorAutomatically adjust the sawing length L of bar
Revise,
Δ G
Error=G
Set-G
Actual
L
Revise=L-Δ G
Error/ (density P * sectional area S);
E, bar blanking system are got back to initial feeding position, wait for and continue feeding;
If will continue blanking, the PLC programmable controller is revised as L with the cutting length L of bar
Revise, feeding, detect, weigh, finish another blanking circulation; If no longer carry out blanking, control finishes, shutdown.
Control method of the present invention supposes that density is constant in the tested bar everywhere, cross sectional shape and size constancy, and think that in the length range of blanking, length is generally less than 0.4 meter, and bar does not have flexibility, and the computing formula of cutting stock weight is:
G=density P * sectional area S * cutting length L.
The accurate physical length precision of the bar after the control blanking, and with the actual weight G of the bar after the blanking
ActualWith setting cutting stock weight G
SetDifference DELTA G
ErrorFeed back to control system, control system is according to Δ G
Error, adjust the controlled variable of a bar of sawing down, thereby realized the accurate saw cutting self-adapting control of bar.
The precision of the physical length L of bar is particularly important after the blanking, for this reason, has adopted horizontal AC servo drive system, high precision photoelectric scrambler and high precision ball screw mandrel on the feed mechanism of bar, realizes high-precision feeding displacement detecting and control; In the feeding feeding, grating displacement sensor is constantly measured the height value of bar front end, make bar front end height consistent with the height of feeding chuck place bar, if error is arranged, another set of vertical AC servo drive system starts, adjust the height of bar rear end, guarantee that bar front end height is consistent with the height of feeding chuck place bar in the feeding process; Just guaranteed the verticality of saw blade and bar during sawing, also just guaranteed the actual cutting length of bar, solved in the precise blanking because the saw kerf tangent plane that the bar bending brings and the out of plumb problem of bar.
The sawing machine of the bar stock saw cutting self-adapting precision baiting system that the present invention uses is common apparatus, and horizontal AC servo drive system, vertical AC servo drive system, high precision ball screw mandrel, high precision photoelectric scrambler, grating displacement sensor, PLC programmable controller, touch man-machine interface, the high-precision weighing sensor be conventional dynamo-electric automatic control equipment adopt with universal elements, AC servo drive system have operate steadily, the precision height, can realize quick startup, stop, reliability height, numerically controlled characteristic; High precision photoelectric scrambler, grating displacement sensor are used for measuring respectively the feeding displacement of bar and the height value of bar front end, because it is a pulse signal, therefore antijamming capability is strong, has therefore realized total digitalization, the control of full cut-off ring of whole blanking system, thereby guarantees the accurate sawing of bar.
The blanking control accuracy of control method of the present invention is:
Feeding displacement accuracy: 0.005mm;
Maximum speed of feed: 5m/min;
Verticality precision: 0.01 °;
LOAD CELLS precision: 0.05%;
Weight measurement precision: 0.25%;
The precise forming that adopts control method of the present invention to can be stamp work in enormous quantities provides accurate blank blanking, helps saving material and machining period.
In sum, the control method of the accurate saw cutting self-adapting of bar provided by the invention system can make the bar cross section vertical with bar, the cutting stock precision height, and the actual weight after the blanking fed back in the control system, realize automatic, real-time, continuous, online, the closed-loop adaptation precision digital control precise blanking of bar stock saw cutting, be convenient to industrial mass production.
Description of drawings
The present invention is further illustrated below in conjunction with drawings and Examples.
The principle of work synoptic diagram of Fig. 1 embodiments of the invention;
The control structure synoptic diagram of Fig. 2 embodiments of the invention;
The control program process flow diagram of Fig. 3 embodiments of the invention.
Embodiment
Embodiment: referring to Fig. 1, Fig. 2, Fig. 3, a kind of control method of bar stock saw cutting self-adapting precision baiting, it has used a kind of shown in Figure 1 by sawing machine, horizontal AC servo drive system 4, vertical AC servo drive system 6, high precision photoelectric scrambler 12, grating displacement sensor 5, PLC programmable controller 10, touch man-machine interface 11, the bar stock saw cutting self-adapting precision baiting system that high-precision weighing sensor 7 constitutes is characterized in that adopting following controlled step:
A, start start the bar blanking system, by touching the sectional area S and the cutting stock weight G of man-machine interface 11 input bars 1
Set, PLC programmable controller 10 is according to the sectional area S and the cutting stock weight G of bar 1
SetCalculate the cutting length L of bar 1,
Cutting length L=G
Set/ (density P * sectional area S);
B, 2 actions of PLC programmable controller 10 control feeding chucks clamp bar 1, controlling level AC servo drive system 4 drives 9 rotations of supporting with it horizontal ball screw simultaneously, realize bar 1 feeding, high precision photoelectric scrambler 12 detects bar 1 amount of feeding, the front end place of grating displacement sensor 5 continuous detection bars 1 and bar 1 are at the height value at feeding chuck 2 places simultaneously, and send measured value to PLC programmable controller 10, PLC programmable controller 10 judges according to the detected value of grating displacement sensor 5 whether bar 1 is consistent at the height value at this two place, if error is arranged, vertical AC servo drive system 6 drives supporting with it vertical ball screw 8 and rotates, adjust the height of bar 1 rear end, guarantee that the front end place of bar 1 in the feeding process and bar 1 in the height unanimity at feeding chuck 2 places, make tested bar 1 remain vertical with saw blade in whole feeding process;
C, when the feeding displacement reaches the cutting length L of bar 1, automatic feed-disabling, 3 actions of PLC programmable controller 10 control sawing chucks, clamp bar 1, start sawing machine sawing bar 1 simultaneously, when sawing machine sawing bar 1, sawing chuck 3 unclamps bar 1 and gets back to initial position, waits for material folding next time;
After d, bar stock saw cutting finished, high-precision weighing sensor 7 was with the actual weight G of the bar under the sawing of measuring
ActualBe sent to PLC programmable controller 10, PLC programmable controller 10 is according to cutting stock weight G
SetWith actual weight G
ActualDifference DELTA G
ErrorAutomatically adjust the sawing length L of bar 1
Revise,
Δ G
Error=G
Set-G
Actual
L
Revise=L-Δ G
Error/ (density P * sectional area S);
E, bar blanking system are got back to initial feeding position, wait for and continue feeding;
If will continue blanking, PLC programmable controller 10 is revised as L with the cutting length L of bar 1
Revise, feeding, detect, weigh, finish another blanking circulation; If no longer carry out blanking, control finishes, shutdown.
Use the control method of the bar stock saw cutting self-adapting precision baiting of present embodiment and carry out certain high pressure vessel blank blanking, actual blanking result is as follows:
Actual weight control accuracy: 52.450 ± 0.125Kg
Improve 6.6 times than former isometric cutting stock precision 52.450 ± 0.80Kg.
Improve 2.56 times than former blanking in constant weight actual weight precision.
Compare with former isometric blanking, but every blank economical with materials is taken 7.39 yuan, save 5.25 yuan of working hour expenses, amount to 12.64 yuan.
Claims (1)
1. the control method of a bar stock saw cutting self-adapting precision baiting, it has used a kind of by sawing machine, horizontal AC servo drive system, vertical AC servo drive system, high precision photoelectric scrambler, grating displacement sensor, PLC programmable controller, touch man-machine interface, the bar stock saw cutting self-adapting precision baiting system that the high-precision weighing sensor constitutes is characterized in that adopting following controlled step:
A, start start the bar blanking system, by touching the sectional area S and the cutting stock weight G of man-machine interface input bar
Set, the PLC programmable controller is according to the sectional area S and the cutting stock weight G of bar
SetCalculate the cutting length L of bar,
Cutting length L=G
Set/ (density P * sectional area S);
B, the horizontal AC servo drive system of PLC programmable controller controls realizes the bar feeding, the high precision photoelectric scrambler detects the bar amount of feeding, simultaneously grating displacement sensor constantly detects the front end place of bar and the bar height value at feeding chuck place, and send measured value to the PLC programmable controller, the PLC programmable controller judges according to measured value whether bar is consistent at the height value at this two place, if error is arranged, vertical AC servo drive system starts, adjust the height of bar rear end, guarantee the front end place of bar in the feeding process and bar height unanimity at feeding chuck place;
C, when the feeding displacement reaches the cutting length L of bar, automatically feed-disabling starts sawing machine sawing bar simultaneously;
After d, bar stock saw cutting finished, the high-precision weighing sensor was with the actual weight G of the bar under the sawing of measuring
ActualBe sent to the PLC programmable controller, the PLC programmable controller is according to cutting stock weight G
SetWith actual weight G
ActualDifference DELTA G
ErrorAutomatically adjust the sawing length L of bar
Revise,
Δ G
Error=G
Set-G
Actual
L
Revise=L-Δ G
Error/ (density P * sectional area S);
E, bar blanking system are got back to initial feeding position, wait for and continue feeding;
If will continue blanking, the PLC programmable controller is revised as L with the cutting length L of bar
Revise, feeding, detect, weigh, finish another blanking circulation; If no longer carry out blanking, control finishes, shutdown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100927597A CN100465835C (en) | 2007-09-27 | 2007-09-27 | Control method for bar stock saw cutting self-adapting precision baiting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100927597A CN100465835C (en) | 2007-09-27 | 2007-09-27 | Control method for bar stock saw cutting self-adapting precision baiting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101135895A true CN101135895A (en) | 2008-03-05 |
| CN100465835C CN100465835C (en) | 2009-03-04 |
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| CNB2007100927597A Expired - Fee Related CN100465835C (en) | 2007-09-27 | 2007-09-27 | Control method for bar stock saw cutting self-adapting precision baiting |
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| CN103744441A (en) * | 2014-01-28 | 2014-04-23 | 龙岩烟草工业有限责任公司 | Tobacco shred material flow control device and method |
| CN105058145A (en) * | 2015-07-28 | 2015-11-18 | 成都市欣欣高强度紧固件制造有限公司 | Automatic feeding equipment for bar cutting |
| CN106940572A (en) * | 2016-01-04 | 2017-07-11 | 中冶长天国际工程有限责任公司 | A kind of intensive mixer material position Adaptable System and method |
| CN108050938A (en) * | 2017-04-01 | 2018-05-18 | 中国五洲工程设计集团有限公司 | A kind of high-fineness ratio propellant on-line measuring device |
| CN108748707A (en) * | 2018-08-22 | 2018-11-06 | 江西众利超硬材料工具有限公司 | A kind of electric control system for diamond bead rope saw machine |
| CN110934174A (en) * | 2019-12-27 | 2020-03-31 | 华南智能机器人创新研究院 | Control method for sausage shearing balance weight |
| CN113510777A (en) * | 2021-04-23 | 2021-10-19 | 漳州蓝旗亚智能设备有限公司 | Method for adjusting weight of rubber strip by rubber strip cutting mechanism, storage medium and strip cutting mechanism |
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| CN101870025B (en) * | 2010-04-23 | 2012-02-29 | 昆山工研院工业机器人研究所有限公司 | Triple torch cutting robot control system and method based on OPC (Optical Proximity Correction) protocol |
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| US5201351A (en) * | 1991-08-12 | 1993-04-13 | Hurdle Jr Ennis J | Edger for a conventional sawmill |
| EP0598858A4 (en) * | 1992-06-15 | 1994-12-07 | Alpine Eng Prod | Automatic saw machine and method. |
| CN1230270C (en) * | 2001-02-27 | 2005-12-07 | 中国兵器工业第五九研究所 | Computerized control method for photopelecronically controlled automatic rod material sawing |
| CN2651793Y (en) * | 2003-09-25 | 2004-10-27 | 上海第二机床厂 | Multiaxial double-channel digit controller |
| US7178436B2 (en) * | 2003-11-07 | 2007-02-20 | United States Steel Corporation | Method of cutting carbon and alloy steel |
| CN2879255Y (en) * | 2005-11-17 | 2007-03-14 | 天水星火机床有限责任公司 | Cutting over-load monitor for digital control machine tool |
| CN100387369C (en) * | 2006-05-19 | 2008-05-14 | 唐山钢铁股份有限公司 | Thermomultiplying ruler shear precision optimizing method for bar production |
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| CN103744441A (en) * | 2014-01-28 | 2014-04-23 | 龙岩烟草工业有限责任公司 | Tobacco shred material flow control device and method |
| CN103744441B (en) * | 2014-01-28 | 2017-08-11 | 龙岩烟草工业有限责任公司 | A kind of control device and method of pipe tobacco mass flow |
| CN105058145A (en) * | 2015-07-28 | 2015-11-18 | 成都市欣欣高强度紧固件制造有限公司 | Automatic feeding equipment for bar cutting |
| CN106940572A (en) * | 2016-01-04 | 2017-07-11 | 中冶长天国际工程有限责任公司 | A kind of intensive mixer material position Adaptable System and method |
| CN108050938A (en) * | 2017-04-01 | 2018-05-18 | 中国五洲工程设计集团有限公司 | A kind of high-fineness ratio propellant on-line measuring device |
| CN108050938B (en) * | 2017-04-01 | 2019-12-17 | 中国五洲工程设计集团有限公司 | online detection device for explosive columns |
| CN108748707A (en) * | 2018-08-22 | 2018-11-06 | 江西众利超硬材料工具有限公司 | A kind of electric control system for diamond bead rope saw machine |
| CN108748707B (en) * | 2018-08-22 | 2023-06-16 | 江西众利超硬材料工具有限公司 | Electrical control system for diamond string bead wire saw |
| CN110934174A (en) * | 2019-12-27 | 2020-03-31 | 华南智能机器人创新研究院 | Control method for sausage shearing balance weight |
| CN110934174B (en) * | 2019-12-27 | 2021-09-10 | 华南智能机器人创新研究院 | Control method for sausage shearing balance weight |
| CN113510777A (en) * | 2021-04-23 | 2021-10-19 | 漳州蓝旗亚智能设备有限公司 | Method for adjusting weight of rubber strip by rubber strip cutting mechanism, storage medium and strip cutting mechanism |
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|---|---|
| CN100465835C (en) | 2009-03-04 |
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Granted publication date: 20090304 Termination date: 20100927 |