CN103321112B - A kind of control method of steel rail weld joint refiner polishing reference position - Google Patents
A kind of control method of steel rail weld joint refiner polishing reference position Download PDFInfo
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- CN103321112B CN103321112B CN201310258365.XA CN201310258365A CN103321112B CN 103321112 B CN103321112 B CN 103321112B CN 201310258365 A CN201310258365 A CN 201310258365A CN 103321112 B CN103321112 B CN 103321112B
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- reference position
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- delivering gear
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Abstract
A kind of control method of steel rail weld joint refiner polishing reference position; Its way is mainly: time initial, and grinding wheel is facing to the non-commissure in steel rail grinding region, and PLC controls polishing servomotor and rotates and drive grinding wheel to rotate; PLC controls feed servo motor reversal and makes the vertical decline of delivering gear immediately, when the armature current value that servomotor armature supply sensor of polishing is measured reaches threshold values; PLC controls feed servo motor to be stopped, and the vertical position of now delivering gear is designated as reference position; Then, the vertical rising of delivering gear arrives polishing zero-bit, carries out longitudinal direction back and forth polishing and vertical feed, until stop when reference position is down in the vertical position of delivering gear, complete the polishing in this polishing region to rail.The method can orient the reference position of polishing automatically, and automatically controls the polishing amount of feeding, when polishing is fed to reference position, automatically stops polishing; The registration of its reference position, rapidly, reliability is high in response, and polishing quality is good.
Description
Technical field
The present invention relates to the control method of a kind of steel rail weld joint refiner polishing reference position.
Background technology
At present, the many employings of China's seamless track steel rail use flash welding method at the weldering base of the rail, it is the gapless line that the scale rail of 25 meters or 100 meters connects into about 500 meters by length, not only overlap can be formed in commissure in welding process, and due to the rigidity of welding machine, make welding point can produce arch to problems such as rail precisions before the technique of welding process and weldering, the distortion such as lateral bending, the distortion at remaining overlap and welding point place not only affects the application life of rail itself, but also be related to traffic safety and the comfortableness of bullet train, at present, all adopt steel rail weld joint refiner polishing welding point both at home and abroad, to ensure the ride comfort of seamless railway.
Steel rail weld joint refiner all adopts grinder buffing mode to carry out the grinding of multiple tracks longitudinal copying at present, because emery wheel self constantly consumes, during emery wheel feeding, the reference position of grinding end face constantly changes, constantly emery wheel will be sent to during a large amount of rail of continuous polishing, when how to determine to have polished in each bruting process, the reference position of emery wheel is just very crucial, the way of normal employing is before polishing, emery wheel is allowed longitudinally to leave weld seam certain distance along rail, with a lower speed, vertical for emery wheel sending to is moved closer to the non-welded seam area of rail again, position when emery wheel just touches rail is as reference position.After reference position is determined, namely emery wheel is retracted into polishing zero-bit, carries out longitudinal direction back and forth polishing vertically to send in steel rail welding line region, when emery wheel is vertical send to reference position time, namely complete the polishing of this road.Therefore, reference position determine whether accurately closely related with polishing quality.
Existing domestic and international refiner adopts near grinding wheel, installs vibrating sensor, proximity transducer, sound transducer, flame sensor sensor additional, collection emery wheel is vertical to be sent to the vibration produced when just contacting with the non-welded seam area surface of rail, sound or flame signal, to determine the polishing reference position of refiner.Problems existing is: 1, sensor need convert vibration, sound or flame signal to the signal of telecommunication and pass to PLC (programmable logic controller) again, its response speed is slow, when causing PLC to receive signal, emery wheel has carried out polishing in the non-weld metal zone of rail and the moment that non-location just contacts, the determination inaccuracy of its reference position; 2, sound, flame, vibrating sensor need external near polishing end face collection signal, are subject to the impact of the external environment such as hum and veiling glare, also cause its poor reliability, easily produce rub-out signal; 3) sensor needing external installation special, had both made its cost high, also need carry out Installation and Debugging before polishing simultaneously, and it is convenient not to use.
Summary of the invention
The object of this invention is to provide the control method of a kind of steel rail weld joint refiner polishing reference position, the method can orient reference position during per pass polishing automatically, and automatically control the polishing amount of feeding, when polishing is fed to reference position, automatically stop this road to polish, the registration of its reference position, response rapidly, reliability is high, and polishing quality is good.
The present invention solves its technical problem, and the first technical scheme adopted is, a kind of control method of steel rail weld joint refiner polishing reference position; Its way is:
Time initial, grinding wheel is facing to the non-commissure in steel rail grinding region, and PLC controls polishing servomotor and rotates, and polishing servomotor drives grinding wheel to rotate; PLC controls feed servo motor reversal and makes the vertical decline of delivering gear immediately; When the polishing servomotor armature current value that servomotor armature supply sensor of polishing is measured reaches default threshold values; PLC controls feed servo motor to be stopped, and the vertical position of delivering gear is now designated as the reference position of polishing by PLC;
Then, PLC controls the rotating forward of feed servo motor and makes the vertical rising 0.5-0.8mm of delivering gear, arrive polishing zero-bit, PLC controls Rodless cylinder and drives polishing servomotor and grinding wheel longitudinally to move back and forth along rail, longitudinal direction back and forth polishing is carried out to rail, after grinding wheel completes and once longitudinally back and forth polishes, namely PLC controls feed servo motor reversal and makes the vertical decline 0.1-0.2mm of delivering gear, then carries out longitudinally back and forth polishing next time; Until stop when reference position is down in the vertical position of delivering gear, complete the polishing to this polishing region of rail.
This scheme is applicable to the steel rail weld joint refiner of lifting by feed servo driven by motor of delivering gear.
The present invention solves its technical problem, and the second technical scheme adopted is, a kind of control method of steel rail weld joint refiner polishing reference position; Its way is:
Time initial, grinding wheel is facing to the non-commissure in steel rail grinding region, and PLC controls polishing servomotor and rotates, and polishing servomotor drives grinding wheel to rotate; PLC controls the vertical decline of piston rod decline drive delivering gear of hoist cylinder immediately; When the polishing servomotor armature current value that servomotor armature supply sensor of polishing is measured reaches default threshold values; The piston rod that PLC controls hoist cylinder stops, and the vertical position of delivering gear is now designated as the reference position of polishing by PLC;
Then, the piston rod rising that PLC controls hoist cylinder makes the vertical rising 0.5-0.8mm of delivering gear, arrive polishing zero-bit, PLC controls Rodless cylinder and drives polishing servomotor and grinding wheel longitudinally to move back and forth along rail, longitudinal direction back and forth polishing is carried out to rail, after grinding wheel completes and once longitudinally back and forth polishes, the piston rod decline that namely PLC controls hoist cylinder makes the vertical decline 0.1-0.2mm of delivering gear, then carries out longitudinally back and forth polishing next time; Until stop when reference position is down in the vertical position of delivering gear, complete the polishing to this polishing region of rail.
The steel rail weld joint refiner that the lifting that this scheme is applicable to delivering gear is driven by hoist cylinder.
Compared with prior art, the invention has the beneficial effects as follows:
One, emery wheel vertical process medium plain emery wheel of sending to is when not yet touching rail non-welded seam area surface, and emery wheel dallies, and polishing servomotor armature current value is very little; And emery wheel is when just touching the non-welded seam area of rail, emery wheel no longer idling conditions, polishing servomotor armature current value increases immediately.Thus the polishing servomotor armature current value that polishing servomotor armature supply sensor is measured is when reaching default threshold values, can judge that now emery wheel just touches the non-welded seam area surface of rail, PLC controls the stopping of feed servo motor or hoist cylinder, and the vertical position of delivering gear is now designated as the reference position of polishing; And automatically control the polishing amount of feeding, when polishing is fed to reference position, automatically stop this road to polish.Its reference position is controlled by the polishing servomotor armature current value directly measured, the fast response time of sensor, and the determination of its reference position more accurately, reliably.
Two, polish servomotor armature supply sensor away from polishing position, thus greatly can reduce fault rate, improve the reliability of equipment, significantly improve the application life of whole system; The detection of polishing servomotor armature current value is not by the interference of ambient sound, flame, vibration, and its acquisition precision is high, and reliability is strong, not easily produces rub-out signal, malfunction; Current sensor is built in collection signal in servomotor, and the external environment such as hum and veiling glare not easily affects acquisition precision.
Three, polish servomotor SERVO CONTROL drive circuit in be usually integrated with armature supply sensor, even if to install armature supply sensor also very convenient on polishing servomotor.Make its cost low, simultaneously without the need to carrying out Installation and Debugging to outer sensor before polishing, easy to use.
Specific implementation method
Embodiment one
A kind of detailed description of the invention of the present invention is, a kind of control method of steel rail weld joint refiner polishing reference position; Its way is:
Time initial, grinding wheel is facing to the non-commissure in steel rail grinding region, and PLC controls polishing servomotor and rotates, and polishing servomotor drives grinding wheel to rotate; PLC controls feed servo motor reversal and makes the vertical decline of delivering gear immediately; When the polishing servomotor armature current value that servomotor armature supply sensor of polishing is measured reaches default threshold values; PLC controls feed servo motor to be stopped, and the vertical position of delivering gear is now designated as the reference position of polishing by PLC;
Then, PLC controls the rotating forward of feed servo motor and makes the vertical rising 0.5-0.8mm of delivering gear, arrive polishing zero-bit, PLC controls Rodless cylinder and drives polishing servomotor and grinding wheel longitudinally to move back and forth along rail, longitudinal direction back and forth polishing is carried out to rail, after grinding wheel completes and once longitudinally back and forth polishes, namely PLC controls feed servo motor reversal and makes the vertical decline 0.1-0.2mm of delivering gear, then carries out longitudinally back and forth polishing next time; Stop until reference position (height sum of namely polishing for each time equals the distance of polishing zero-bit and reference position) time is down in the vertical position of delivering gear, complete the polishing to this polishing region of rail.
Obviously, the present invention to rail carry out longitudinal direction back and forth polish time, longitudinally reciprocating track streaks the weld metal zone of rail.
Embodiment two
The second detailed description of the invention of the present invention is, a kind of control method of steel rail weld joint refiner polishing reference position; Its way is:
Time initial, grinding wheel is facing to the non-commissure in steel rail grinding region, and PLC controls polishing servomotor and rotates, and polishing servomotor drives grinding wheel to rotate; PLC controls the vertical decline of piston rod decline drive delivering gear of hoist cylinder immediately; When the polishing servomotor armature current value that servomotor armature supply sensor of polishing is measured reaches default threshold values; The piston rod that PLC controls hoist cylinder stops, and the vertical position of delivering gear is now designated as the reference position of polishing by PLC;
Then, the piston rod rising that PLC controls hoist cylinder makes the vertical rising 0.5-0.8mm of delivering gear, arrive polishing zero-bit, PLC controls Rodless cylinder and drives polishing servomotor and grinding wheel longitudinally to move back and forth along rail, longitudinal direction back and forth polishing is carried out to rail, after grinding wheel completes and once longitudinally back and forth polishes, the piston rod decline that namely PLC controls hoist cylinder makes the vertical decline 0.1-0.2mm of delivering gear, then carries out longitudinally back and forth polishing next time; Until stop when reference position is down in the vertical position of delivering gear, complete the polishing to this polishing region of rail.
During the invention process, the threshold values preset of polishing servomotor armature current value draws by the steel rail grinding test of steel rail weld joint refiner, namely by the multiple different threshold values of setting, carry out repeatedly steel rail grinding test, show that grinding wheel just touches rail, the armature current value that the best polishing reference position of polishing effect is corresponding, is the stopping feed threshold values of this kind of model refiner.
Claims (2)
1. a control method for steel rail weld joint refiner polishing reference position, its way is:
Time initial, grinding wheel is facing to the non-commissure in steel rail grinding region, and PLC controls polishing servomotor and rotates, and polishing servomotor drives grinding wheel to rotate; PLC controls feed servo motor reversal and makes the vertical decline of delivering gear immediately; When the polishing servomotor armature current value that servomotor armature supply sensor of polishing is measured reaches default threshold values; PLC controls feed servo motor to be stopped, and the vertical position of delivering gear is now designated as the reference position of polishing by PLC;
Then, PLC controls the rotating forward of feed servo motor and makes the vertical rising 0.5-0.8mm of delivering gear, arrive polishing zero-bit, PLC controls Rodless cylinder and drives polishing servomotor and grinding wheel longitudinally to move back and forth along rail, longitudinal direction back and forth polishing is carried out to rail, after grinding wheel completes and once longitudinally back and forth polishes, namely PLC controls feed servo motor reversal and makes the vertical decline 0.1-0.2mm of delivering gear, then carries out longitudinally back and forth polishing next time; Until stop when reference position is down in the vertical position of delivering gear, complete the polishing to this polishing region of rail.
2. a control method for steel rail weld joint refiner polishing reference position, its way is:
Time initial, grinding wheel is facing to the non-commissure in steel rail grinding region, and PLC controls polishing servomotor and rotates, and polishing servomotor drives grinding wheel to rotate; PLC controls the vertical decline of piston rod decline drive delivering gear of hoist cylinder immediately; When the polishing servomotor armature current value that servomotor armature supply sensor of polishing is measured reaches default threshold values; The piston rod that PLC controls hoist cylinder stops, and the vertical position of delivering gear is now designated as the reference position of polishing by PLC;
Then, the piston rod rising that PLC controls hoist cylinder makes the vertical rising 0.5-0.8mm of delivering gear, arrive polishing zero-bit, PLC controls Rodless cylinder and drives polishing servomotor and grinding wheel longitudinally to move back and forth along rail, longitudinal direction back and forth polishing is carried out to rail, after grinding wheel completes and once longitudinally back and forth polishes, the piston rod decline that namely PLC controls hoist cylinder makes the vertical decline 0.1-0.2mm of delivering gear, then carries out longitudinally back and forth polishing next time; Until stop when reference position is down in the vertical position of delivering gear, complete the polishing to this polishing region of rail.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310258365.XA CN103321112B (en) | 2013-06-25 | 2013-06-25 | A kind of control method of steel rail weld joint refiner polishing reference position |
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| CN201310258365.XA CN103321112B (en) | 2013-06-25 | 2013-06-25 | A kind of control method of steel rail weld joint refiner polishing reference position |
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| CN103321112A CN103321112A (en) | 2013-09-25 |
| CN103321112B true CN103321112B (en) | 2016-02-03 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452500B (en) * | 2014-11-17 | 2016-05-18 | 南京宏典轨道装备有限公司 | A kind of track profiling polishing process |
| CN107675568B (en) * | 2017-11-10 | 2023-09-12 | 成都西南交通大学产业(集团)有限公司 | Intelligent automatic profiling and polishing device for rail tops of steel rails |
| CN108149534B (en) * | 2017-12-06 | 2019-08-09 | 株洲时代电子技术有限公司 | A kind of steel rail grinding motor falls orbit control method |
| CN108103864B (en) * | 2017-12-06 | 2019-11-22 | 株洲时代电子技术有限公司 | A kind of steel rail grinding motor falls rail control parameter setting method |
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| JPH04330101A (en) * | 1991-03-20 | 1992-11-18 | Nagoya Tetsudo Kk | Method and device for controlling rail grinding |
| RU2169227C1 (en) * | 1999-12-21 | 2001-06-20 | НПП "АпАТэК" | Automatic rail-grinding machine |
| CN1850447A (en) * | 2006-05-18 | 2006-10-25 | 上海理工大学附属二厂 | Vibration-sensing automatic grinding detecting system and method |
| CN2885495Y (en) * | 2006-05-18 | 2007-04-04 | 上海理工大学附属二厂 | Digital control fine grinding machine for rail welded seam |
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| CN102535279A (en) * | 2012-01-13 | 2012-07-04 | 西南交通大学 | Numerical control fine-grinding quality control method of rail welding joint |
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2013
- 2013-06-25 CN CN201310258365.XA patent/CN103321112B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04330101A (en) * | 1991-03-20 | 1992-11-18 | Nagoya Tetsudo Kk | Method and device for controlling rail grinding |
| RU2169227C1 (en) * | 1999-12-21 | 2001-06-20 | НПП "АпАТэК" | Automatic rail-grinding machine |
| CN2892373Y (en) * | 2006-04-24 | 2007-04-25 | 南京数控机床有限公司 | Automatic setting tool and tool setting depth control device for grinding machine |
| CN1850447A (en) * | 2006-05-18 | 2006-10-25 | 上海理工大学附属二厂 | Vibration-sensing automatic grinding detecting system and method |
| CN2885495Y (en) * | 2006-05-18 | 2007-04-04 | 上海理工大学附属二厂 | Digital control fine grinding machine for rail welded seam |
| CN2885496Y (en) * | 2006-05-18 | 2007-04-04 | 上海理工大学附属二厂 | Railway steel rail flatness repairing and grinding device |
| CN101823221A (en) * | 2009-03-03 | 2010-09-08 | 上海工程技术大学 | Electrical control system and control method for steel rail refining mill |
| CN101966690A (en) * | 2010-07-27 | 2011-02-09 | 上海瑞纽机械装备制造有限公司 | Light-sensitive automatic grinding and position-detecting system and method |
| CN102535279A (en) * | 2012-01-13 | 2012-07-04 | 西南交通大学 | Numerical control fine-grinding quality control method of rail welding joint |
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