CN103624114A - Automatic metal pipe roundness correction system and processing method thereof - Google Patents
Automatic metal pipe roundness correction system and processing method thereof Download PDFInfo
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Abstract
The invention discloses an automatic metal pipe roundness correction system and a processing method thereof. The automatic metal pipe roundness correction system comprises a PLC, an industrial personal computer, a position sensor, a pipe diameter recognizing system, a frequency converter, a carrier roller motor, a position detection encoder, a pipe diameter detecting part formed by a CCD camera or a laser distance meter and a carrier roller and a pipe diameter correction device. The pipe diameter recognizing system, the position sensor and the position detection encoder are connected with the input end of the PLC, the industrial personal computer is connected with the PLC in a bidirectional mode, the carrier roller motor is electrically connected with the output end of the PLC through the frequency converter, the CCD camera is electrically connected with the industrial personal computer, the carrier roller motor drives a metal pipe to rotate through a carrier roller mechanism and the pipe diameter correction device is controlled by the PLC. The automatic metal pipe roundness correction system can realize automatic mixed pipe roundness correction, improve the production efficiency and lower the rejection ratio.
Description
Technical field
The present invention relates to metal tube detection technique field, relate in particular to the automatic school of a kind of metal tube circle treatment system.
Background technology
Use No. 18 above molten casting irons after adding nodulizer, through the fluid origin tubing of centrifugal ductile pig machine high speed centrifugation, be referred to as " ductile iron pipe ", referred to as bulb, ductile iron pipe and ductile iron pipe etc.Ductile iron pipe is a kind of of metal tube, is the alloy of a kind of iron, carbon and silicon.In spheroidal graphite cast-iron, graphite exists with balled form, the size of general graphite is 6-7 level, require qualitatively the nodulizing grade of cast iron pipe to control as 1-3 level (nodularization rate is greater than 80%), thereby the mechanical performance of material itself obtains good improvement, there is the essence of iron, the performance of steel.Its metallographic structure of ductile iron pipe after annealing is that ferrite adds a small amount of pearlite, satisfactory mechanical property, antiseptic property is excellent, ductility is good, good sealing effect, install simple and easyly, be mainly used in the feedwater of municipal administration, industrial and mining enterprises, gas transmission, the fields such as oil transportation, be the first-selection of pipe material for water supply, there is very high cost performance.
In the prior art, ductile iron pipe Calibration mostly is artificial employing survey tool and measures; Use mark circle to measure the perfectly straight external diameter of ductile iron pipe, use the wall thickness of kind of calliper ductile iron pipe, operating personnel are according to the compliance of measurement result establishing criteria judgement tube outer diameter size.For the underproof pipe of measurement size, operating personnel operate hydro-mechanical unit and make pipe generation deformation so that pipe shaft size reaches in qualified scope from tube exterior extruding, for repeatedly pushing still underproof pipe, directly sentence useless processing, traditional measurement and bearing calibration hand labor intensity are large, measurement efficiency is low.
Japanese documentation TOHKEMY 2006-272365A discloses a kind of metal tube pipe end apparatus for correcting, it comprises external diameter measuring device 1, controller 2 and apparatus for correcting 4, external diameter measuring device comprises arm 1a, is supported in feeler 1b and rotational source 1c on arm 1a, rotational source 1c drives feeler 1b along the circumferential direction to revolve and turn around, thereby feeler 1b scanning steel pipe P outer surface one circle can obtain the position of the shape of steel pipe P pipe end and maximum outside diameter, minimum diameter, minimum diameter; Carrying roller 3a, 3b supports and steel pipe P is rotated along circumference, and rotary speed, rotational time are controlled, and means for correcting 4 is positioned at the inside of steel pipe P, according to circularity skew and the corrected value of output from controller 2, the circularity of steel pipe P is proofreaied and correct.Because metal tube product is a lot of with diameter different model, in process of production, in order to adapt to the metal tube of different tube diameters, detect, technical scheme as above will be faced with the problem of adjusting external diameter measuring device, to adapt to the quality testing needs of different tube diameters metal tube, yet in order to realize automated production, such adjustment will inevitably have influence on the continuity of production; If a plurality of detection stations are set for different model caliber metal tube, will increase cost on the one hand, will occupy more working space on the other hand.
Summary of the invention
Technical problem to be solved by this invention is to provide the automatic school of a kind of metal tube circle system, to realize the mixed Guan Jiaoyuan system that can need towards different tube diameters metal tube school circle.Described system can detect caliber and the ovality of ductile iron pipe automatically, to measuring underproof pipe automatic calibration, to after repeatedly proofreading and correct still underproof cast tube sentence useless processing.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
The automatic school of a kind of metal tube circle treatment system, it comprises electric control system, IMAQ part, caliber means for correcting and caliber recognition system, described caliber recognition system is for detection of the caliber of metal tube, and caliber information is sent to described electric control system, described electric control system makes metal tube according to default speed rotation according to pipe diameter size; Described IMAQ part is carried out IMAQ according to the default number of times of taking pictures to pipe end according to pipe diameter size, process image recognition pipe end caliber information simultaneously, and to described electric control system, sending school circle instruction according to described pipe end caliber information, described electric control system makes metal tube be rotated in place the school circle action of the described caliber means for correcting of cooperation.
Or, the automatic school of a kind of metal tube circle treatment system, it comprises electric control system, laser ranging part, caliber means for correcting and caliber recognition system, described caliber recognition system is for detection of the caliber of metal tube, and caliber information is sent to described electric control system, and described electric control system makes metal tube according to default speed rotation according to pipe diameter size; Described laser ranging part is measured metal tube pipe end diameter according to pipe diameter size according to default detection number of times, and to described electric control system, sending school circle instruction according to described pipe end caliber information, described electric control system makes metal tube be rotated in place the school circle action of the described caliber means for correcting of cooperation.
Preferably, the electric control system of the automatic school of this metal tube circle treatment system comprises PLC controller, industrial computer, position sensor, caliber recognition system, frequency converter, carrying roller motor, position probing encoder, CCD camera, carrying roller and caliber means for correcting, described caliber recognition system, position sensor is connected with the input of PLC controller with position probing encoder, described industrial computer is connected with PLC controller is two-way, carrying roller motor is electrically connected to the output of described PLC controller by frequency converter, described CCD camera is electrically connected to industrial computer, described carrying roller motor is fixedly connected with carrying roller, carrying roller drives metal tube to be detected to rotate, described caliber means for correcting is controlled by described PLC controller.
Preferably, the IMAQ of the automatic school of this metal tube circle treatment system partly comprises industrial computer and CCD camera, described industrial computer is controlled the capture process of described CCD camera, and to described electric control system, sends school circle instruction according to described pipe end caliber information.
Preferably, the laser ranging of the automatic school of this metal tube circle system partly comprises industrial computer and laser range finder, described industrial computer is controlled the measuring process of described laser range finder, and to described electric control system, sends school circle instruction according to described pipe end caliber information.
Preferably, described caliber means for correcting is carried out expanding-contracting action under the control of described electric control system, and stroke is determined according to the described pipe end caliber information collecting by described industrial computer; Electric control system is adjusted described metal tube according to the pipe end caliber extreme value position of described position probing encoder detection record makes the flexible direction of described caliber means for correcting consistent with pipe end extreme value place direction; Conventionally the pipe end caliber information gathering comprises pipe end caliber average, ovality and caliber extreme value etc.
Preferably, described CCD camera be positioned at metal tube to be detected directly over.
Preferably, described two laser range finders be positioned at metal tube to be measured directly over and under.
Preferably, described caliber recognition system is positioned at left side or the right side of described metal tube to be detected.
Preferably, described carrying roller is provided with two groups, and described position sensor is between two groups of carrying rollers, and described position probing encoder is fixed on described carrying roller.
Preferably, described carrying roller is positioned at the two ends of described metal tube to be detected, and described carrying roller forms point with metal tube to be detected and contacts.
Preferably, described metal tube comprises ductile iron pipe.
The automatic school of the metal tube circle processing method that the present invention proposes comprises following step:
A. position sensor detects metal tube and whether enters sired results position, school;
If b. metal tube puts in place, PLC controller starts caliber recognition system, and described caliber recognition system is sent to caliber information in described PLC controller;
C. after setting-up time of described PLC delaying time of controller, according to pipe diameter size, according to preset rotation speed, drive carrying roller electric machine rotation, carrying roller motor rotates metal tube by carrier roller mechanism;
D. sending driving instruction to carrying roller motor when, described PLC controller sends instruction to industrial computer, described industrial computer starts CCD camera according to the preset frequency shooting pipe end image mating with pipe diameter size after receiving instruction, described industrial computer synchronously starts to process image, calculate pipe end caliber information, and judge that whether metal tube is qualified;
E. for underproof metal tube, industrial computer is to described PLC controller transmitted signal, and PLC controller is carried out the school circle action of pipe end according to this signal controlling caliber means for correcting.
Described system comprises part of data acquisition and electric control system, part of data acquisition comprises sensor and CCD camera, industrial computer is by the caliber data of CCD collected by camera ductile iron pipe and carry out data processing by the software in industrial computer, calculate the ovality information of ductile iron pipe, and calculate caliber size information by related sensor and PLC controller, electric control system adopts PLC controller to realize, the caliber and the ovality information that according to industrial computer and PLC controller, collect, the control of realization to caliber means for correcting, thereby described system can automatically detect and judge that whether ductile iron pipe is qualified, count the qualification rate of ductile iron pipe caliber size, and then can realize automatic school circle to underproof product, to after repeatedly proofreading and correct still inappropriate product reject processing, improved the quality of ductile iron pipe, reduced workman's labour intensity, improved the degree of accuracy of operating efficiency and measurement, improved operating personnel's working environment.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the principle schematic of embodiment 1;
Fig. 2 is the method flow diagram of embodiment 1;
Fig. 3 is the principle schematic of embodiment 2;
Fig. 4 is the method flow diagram of embodiment 2;
Wherein: 1, PLC controller 2, industrial computer 3, position sensor 4, caliber recognition system 5, frequency converter 6, carrying roller motor 7, position probing encoder 8, CCD camera 9, metal tube to be detected 10, carrier roller mechanism 11, caliber means for correcting 12 laser range finders.
The specific embodiment
Embodiment 1:
As shown in Figure 1, the automatic school of a kind of metal tube circle system, comprises PLC controller 1, industrial computer 2, position sensor 3, caliber recognition system 4, frequency converter 5, carrying roller motor 6, position probing encoder 7, CCD camera 8, carrier roller mechanism 10.Described industrial computer 2 and described two-way connection of PLC controller 1, caliber recognition system 4, position sensor 3 and position probing encoder 7 are electrically connected to PLC controller 1, carrying roller motor 6 is electrically connected to the output of described PLC controller 1 by frequency converter 5, described CCD camera 8 or laser range finder 12 are electrically connected to industrial computer 2, described carrying roller motor 6 is fixedly connected with carrier roller mechanism 10, and carrier roller mechanism 10 drives metal tube 9 to be detected to rotate.
Preferably, in order to take pictures conveniently, described CCD camera 8 be positioned at metal tube 9 to be detected socket end directly over, be used for taking metal tube hydraulic pressure detect before test with test after socket pipe end image.Described caliber recognition system 4 is positioned at left side or the right side of described metal tube to be detected 9, for identifying the information of caliber.Described carrier roller mechanism 10 is provided with two groups, every group two, described position sensor 3 is between two carrying rollers, described position probing encoder 7 is fixed on described carrier roller mechanism 10, carrying roller motor 6 drives carrier roller mechanism 10 to rotate, and carrier roller mechanism 10 drives metal tube 9 to be detected to rotate, when metal tube 9 to be detected is put between two groups of carrier roller mechanisms 10, position sensor 3 perceives metal tube 9 and has placed, and sends relevant information to PLC controller 1.
Every group of carrier roller mechanism 10 is positioned at the two ends of described metal tube to be detected 9, and described carrier roller mechanism 10 forms point with two ends of metal tube 9 to be detected and contacts, in order to reduce carrying roller wearing and tearing to metal tube body periphery in rotary course.
The workflow of described system is as follows:
(1) when metal tube enters into the station with this system, position sensor has detected pipe, PLC controller is controlled caliber recognition system and is started, metal tube caliber information on this station is passed to PLC controller, and the program in PLC controller goes out the metal tube caliber essential information on school sired results position now according to the input-signal judging of sensor;
(2) after identifying caliber information, PLC controller sends metal tube rotation control instruction, after setting-up time of PLC Program time delay, control carrying roller electric machine rotation, carrying roller motor drives carrying roller rotation, in the program of PLC controller, the metal tube of different tube diameters is driven in rotation according to different desired speeds;
(3) when sending pipe rotate instruction, PLC controller sends instruction to industrial computer, pipe rotating 360 degrees, the anglec of rotation detects and is detected by the position coder being arranged on roller carrier shaft, in metal tube rotating 360 degrees process, CCD camera is taken multiple series of images according to the frequency with match of pipe diameter at socket end, image transmitting stores in industrial computer, industrial computer calculates one group of caliber numerical value of this metal tube according to program, and calculating mean value and ovality, judge maximum value position and the minimum of a value position of caliber;
(4) to detecting the underproof metal tube of caliber, industrial computer is issued signal of PLC controller, PLC controller, according to the caliber extreme value place of position coder detection record, is controlled carrying roller rotation, makes the minimum of a value position of caliber in being positioned at horizontal or vertical direction;
(5) after pipe is rotated in place, PLC controller is controlled caliber means for correcting and is entered pipe end from socket side, caliber means for correcting proofreaies and correct pipe pipe shaft generation deformation by flexible tensioner, it is qualified that the scope that the rear pipe shaft ovality of correction reaches quality requirement is judged to be, after correction, repeat step (3), judge whether ovality reaches the scope of quality requirement, as qualified, enter subsequent processing;
(6) detect after repeatedly proofreading and correct ovality still underproof pipe will be judged as defectively, industrial computer records the information of this defective pipe, and adds up disqualification rate.
Described system can calculate the stroke that caliber means for correcting needs according to the metal tube ovality recording and empirical equation, and correcting mode has two kinds: from tube interior, outwards push and inwardly push from tube exterior.Described system can be adjusted automatically according to measurement result the position of carrying roller, guarantees the uniformity of the flexible direction of caliber means for correcting and the oval extreme value place of metal tube place direction.Take socket caliber minimum of a value position is example, carrying roller rotation makes this position in horizontal direction, caliber means for correcting is as oil cylinder, enter in socket pipe end, according to the predetermined stroke calculating, as caliber mean value flatly applies extruding force, make the diameter of caliber means for correcting reach this predetermined stroke.
Described system comprises part of data acquisition and electric control system, part of data acquisition comprises sensor and CCD camera, industrial computer is by the caliber data of CCD collected by camera metal tube and carry out data processing by the image processing software in industrial computer, calculates the ovality information of metal tube, electric control system adopts PLC controller to realize, pipe end caliber information (the pipe end caliber average collecting according to industrial computer, ovality, caliber extreme value etc.) and and position probing encoder the caliber maximum or the minimum of a value positional information that collect, the control of realization to caliber means for correcting, thereby described system can automatically detect and judge that whether metal tube is qualified, count the qualification rate of metal tube caliber size, and then can realize automatic school circle to underproof product, to after proofreading and correct still inappropriate product reject processing, improved the quality of metal tube, reduced workman's labour intensity, improved the degree of accuracy of operating efficiency and measurement, improved operating personnel's working environment.
Embodiment 2:
In the present embodiment, thereby in alternative embodiment 1, utilize CCD collected by camera image to detect the scheme of metal tube diameter, replace, adopt laser triangulation principle, at metal tube, as described in Example 1 under rotation status, detect the metal tube caliber under diverse location, obtain one group of metal tube caliber numerical value, judge maximum caliber value position or minimum pipe value position, then according to mode as described in example 1 above, by caliber means for correcting, carry out school circle process.
As shown in Figure 2, just going up with positive upper/lower positions of metal tube 9, a laser range finder 12 is respectively set, just going up with positive upper/lower positions and can determine by carrier roller mechanism 10, laser range finder 12 positions are fixed, after position sensor 3 retrieves metal tube 9 and puts in place, upper and lower two laser range finders 12 can be started working, and according to range of triangle principle, detect caliber; When metal tube 9 rotates according to setting rotating speed, laser range finder 12 gathers one group of metal tube and rotates to the caliber numerical value under diverse location.According to mode as described in Example 1, under the control of industrial computer 3 and PLC controller 1, carry out school circle action afterwards.
The workflow of described system is as follows:
(1) when metal tube enters into the station with this system, position sensor has detected pipe, PLC controller is controlled caliber recognition system and is started, metal tube caliber information on this station is passed to PLC controller, and the program in PLC controller goes out the metal tube caliber essential information on school sired results position now according to the input-signal judging of sensor;
(2) after identifying caliber information, PLC controller sends metal tube rotation control instruction, after setting-up time of PLC Program time delay, control carrying roller electric machine rotation, carrying roller motor drives carrying roller rotation, in the program of PLC controller, the metal tube of different tube diameters is driven in rotation according to different desired speeds;
(3) when sending pipe rotate instruction, PLC controller sends instruction to industrial computer, pipe is rotating 360 degrees altogether, the anglec of rotation detects and is completed by the position coder being arranged on roller carrier shaft, in metal tube rotating 360 degrees process, laser range finder gathers a plurality of caliber numerical value according to the frequency with match of pipe diameter at socket end, industrial computer is according to this group caliber numerical value of routine processes, and calculating mean value and ovality, judges maximum value position and the minimum of a value position of caliber;
(4) to detecting the underproof metal tube of caliber, industrial computer is issued signal of PLC controller, PLC controller, according to the caliber extreme value place of position coder detection record, is controlled carrying roller rotation, makes the minimum of a value position of caliber in being positioned at horizontal or vertical direction;
(5) after pipe is rotated in place, PLC controller is controlled caliber means for correcting and is entered pipe end from socket side, caliber means for correcting proofreaies and correct pipe pipe shaft generation deformation by flexible tensioner, it is qualified that the scope that the rear pipe shaft ovality of correction reaches quality requirement is judged to be, after correction, repeat step (3), judge whether ovality reaches the scope of quality requirement, as qualified, enter subsequent processing;
(6) detect after repeatedly proofreading and correct ovality still underproof pipe will be judged as defectively, industrial computer records the information of this defective pipe, and adds up disqualification rate.
Applied specific case herein principle of the present invention and embodiment thereof are set forth, the explanation of above embodiment is just with helping understand method of the present invention and core concept thereof.It should be pointed out that for the person of ordinary skill of the art, can also carry out some improvement and modification to the present invention under the premise without departing from the principles of the invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (17)
1. a system is justified in the automatic school of metal tube, and it comprises electric control system (1,3,5,6,7,10,12), IMAQ part (2,8) and caliber means for correcting (11), it is characterized in that, also comprise caliber recognition system (4), described caliber recognition system (4) is for detection of the caliber of metal tube, and caliber information is sent to described electric control system, described electric control system makes metal tube according to default speed rotation according to pipe diameter size; Described IMAQ part is carried out IMAQ according to the default number of times of taking pictures to pipe end according to pipe diameter size, process image recognition pipe end caliber information simultaneously, and to described electric control system, sending school circle instruction according to described pipe end caliber information, described electric control system makes metal tube be rotated in place the school circle action of the described caliber means for correcting of cooperation (11).
2. system is justified in the automatic school of metal tube as claimed in claim 1, it is characterized in that described electric control system (1,3,5,6,7,10) comprise PLC controller (1), position sensor (3), position probing encoder (7), frequency converter (5), carrying roller motor (6), carrier roller mechanism (10); Described position sensor (3) and position probing encoder (7) are electrically connected to PLC controller, described carrying roller motor (6) is electrically connected to described PLC controller (1) by frequency converter (5), described carrying roller motor (6) drives carrier roller mechanism (10), and carrier roller mechanism (10) drives described metal tube (9) to rotate.
3. system is justified in the automatic school of metal tube as claimed in claim 1, it is characterized in that described IMAQ part (2,8) comprise industrial computer (2) and CCD camera (8), described industrial computer (2) is controlled the capture process of described CCD camera (8), and to described electric control system, sends school circle instruction according to described pipe end caliber information.
4. the round system in the automatic school of metal tube as claimed in claim 2, is characterized in that described caliber means for correcting (11) can adopt from the outside inwardly extruding of pipe end or from the outside school circle mode of pushing of pipe end inwall.
5. system is justified in the automatic school of metal tube as claimed in claim 4, it is characterized in that described caliber means for correcting (11) carries out expanding-contracting action under the control of described electric control system, stroke is determined according to the described pipe end caliber information collecting by described industrial computer.
6. the automatic school of metal tube as claimed in claim 4 circle system, is characterized in that described electric control system adjusts described metal tube according to the pipe end caliber extreme value position of described position probing encoder (7) detection record and make the flexible direction of described caliber means for correcting (11) consistent with pipe end extreme value place direction.
7. the automatic school of metal tube as claimed in claim 5 circle system, is characterized in that described pipe end caliber information comprises ovality and caliber extreme value.
8. the automatic school of metal tube as claimed in claim 2 circle system, is characterized in that described PLC controller (1) controls described carrying roller motor (6) according to different caliber information and drive metal tube at the uniform velocity to rotate with different default rotary speeies.
9. the automatic school of metal tube as claimed in claim 3 circle system, it is characterized in that described CCD camera (8) be positioned at described pipe end directly over.
10. the automatic school of metal tube as claimed in claim 1 circle system, is characterized in that described caliber recognition system (4) is positioned at left side or the right side of described metal tube.
The 11. automatic school of metal tube as claimed in claim 2 circle systems, it is characterized in that described carrier roller mechanism (10) is provided with two groups, one group comprises two carrying rollers, described position sensor (3) is positioned between two groups of carrier roller mechanisms (10), and described position probing encoder (7) is coaxially installed with the monomer carrying roller of carrier roller mechanism (10).
The 12. automatic school of metal tube as claimed in claim 11 circle systems, is characterized in that respectively organizing the two ends that carrying roller (10) is supported in described metal tube, and described carrying roller forms point with pipe end and contacts.
The 13. 1 kinds of automatic school of metal tube circle processing methods, it comprises following treatment step:
A. position sensor (3) detects metal tube and whether enters sired results position, school;
If b. metal tube puts in place, PLC controller (1) starts caliber recognition system (4), and described caliber recognition system (4) is sent to caliber information in described PLC controller (1);
C. after setting-up time of described PLC controller (1) time delay, according to pipe diameter size, according to preset rotation speed, drive carrying roller motor (6) to rotate, carrying roller motor rotates metal tube by carrier roller mechanism;
D. sending driving instruction to carrying roller motor (6) when, described PLC controller (1) sends instruction to industrial computer (2), described industrial computer (2) starts CCD camera according to the preset frequency shooting pipe end image mating with pipe diameter size after receiving instruction, described industrial computer (2) synchronously starts to process image, calculate pipe end caliber information, and judge that whether metal tube is qualified;
E. for underproof metal tube, industrial computer (2) is to described PLC controller (1) transmitted signal, and PLC controller is carried out the school circle action of pipe end according to this signal controlling caliber means for correcting (11).
The 14. 1 kinds of automatic school of metal tube circle systems, it comprises electric control system (1,3,5,6,7,10), laser ranging part (2,12) and caliber means for correcting (11), is characterized in that,
Also comprise caliber recognition system (4), described caliber recognition system (4) is for detection of the caliber of metal tube, and caliber information is sent to described electric control system, and described electric control system makes metal tube according to default speed rotation according to pipe diameter size; Described laser ranging part is measured metal tube pipe end diameter according to pipe diameter size according to default detection number of times, and to described electric control system, sending school circle instruction according to described pipe end caliber information, described electric control system makes metal tube be rotated in place the school circle action of the described caliber means for correcting of cooperation (11).
The 15. automatic school of metal tube as claimed in claim 14 circle systems, it is characterized in that described electric control system (1,3,5,6,7,10) comprise PLC controller (1), position sensor (3), position probing encoder (7), frequency converter (5), carrying roller motor (6), carrier roller mechanism (10); Described position sensor (3) and position probing encoder (7) are electrically connected to PLC controller, described carrying roller motor (6) is electrically connected to described PLC controller (1) by frequency converter (5), described carrying roller motor (6) drives carrier roller mechanism (10), and carrier roller mechanism (10) drives described metal tube (9) to rotate.
The 16. automatic school of metal tube as claimed in claim 14 circle systems, it is characterized in that described laser ranging part (2,12) comprise industrial computer (2) and laser range finder (12), described industrial computer (2) is controlled the measuring process of described laser range finder (12), and to described electric control system, sends school circle instruction according to described pipe end caliber information.
The 17. 1 kinds of automatic school of metal tube circle processing methods, it comprises following treatment step:
A. position sensor (3) detects metal tube and whether enters sired results position, school;
If b. metal tube puts in place, PLC controller (1) starts caliber recognition system (4), and described caliber recognition system (4) is sent to caliber information in described PLC controller (1);
C. after setting-up time of described PLC controller (1) time delay, according to pipe diameter size, according to preset rotation speed, drive carrying roller motor (6) to rotate, carrying roller motor rotates metal tube by carrier roller mechanism;
D. sending driving instruction to carrying roller motor (6) when, described PLC controller (1) sends instruction to industrial computer (2), described industrial computer (2) starts laser range finder (12) according to the preset frequency detection tube end diameter of mating with pipe diameter size after receiving instruction, described industrial computer (2) is processed the one group of pipe end footpath value detecting, and judges that whether metal tube is qualified;
E. for underproof metal tube, described industrial computer (2) is to described PLC controller (1) transmitted signal, and PLC controller is carried out the school circle action of pipe end according to this signal controlling caliber means for correcting (11).
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