CN103868476A - Photoelectric nondestructive testing-based tube inner hole straightness automatic test system and test method - Google Patents
Photoelectric nondestructive testing-based tube inner hole straightness automatic test system and test method Download PDFInfo
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Abstract
The invention discloses a photoelectric nondestructive testing-based tube inner hole straightness automatic test system and test method. The photoelectric nondestructive testing-based tube inner hole straightness automatic test system comprises a tube bracket, a laser transmitter (5), a photoelectric receiver (6), a sliding component and an industrial personal computer, wherein the laser transmitter (5) is arranged at the front end of a tested tube (4) through a mounting bracket A; the photoelectric receiver (6) is arranged on the sliding component via a mounting bracket B; the sliding component is arranged in a chamber of the tested tube (4); the laser transmitter (5) and the sliding component are connected with a control signal output end of the industrial personal computer; the photoelectric receiver (6) is connected with a collection signal input end of the industrial personal computer. According to the photoelectric nondestructive testing-based tube inner hole straightness automatic test system and test method, the detecting precision is high and the automation is better.
Description
Technical field
The present invention relates to a kind of detection system, particularly relate to a kind of tube endoporus linearity automatic checkout system and detection method based on photoelectricity Non-Destructive Testing.
Background technology
Endoporus linearity directly affects machining precision and the assembly precision of workpiece, at present, the detection system of tube endoporus linearity is mainly contained:
1, obtain the experimental compasses for internal linearity (applying date: 2004.6.30 of People's Republic of China's china national practical new-type patent, open day: 2005.6.15), its technical scheme is: it comprises housing, measures ring, long plug, hook and short plug, measuring ring is arranged on housing, long plug and short plug are arranged on respectively the two ends of housing, and the two ends of housing are also separately installed with hook.Foregoing invention create have easy to operate, lightweight, be easy to the features such as processing, but, foregoing invention is created the endoporus linearity that is merely able to qualitatively judge tested tube, can not obtain concrete data message, therefore, foregoing invention is created and more and more can not be met the needs of modern industry to tube endoporus Linearity surveying.
2, in order to address the above problem, obtain a kind of noncontact endoporus linearity measurer (applying date: 2013.03.28 of People's Republic of China's china national practical new-type patent, the day for announcing: 2013.10.09), its technical scheme is: it comprises light source, the gentle transportation by driving moving platform of photoelectric sensor, the light that described light source sends is radiated on the photosurface of described photoelectric sensor, described photoelectric sensor is arranged on the center of described air supporting motion platform, described air supporting motion platform is arranged on by center bearing bracket in the endoporus of measured piece, and can in the endoporus of measured piece, move.Foregoing invention creation has simple to operate, the advantages such as stability is strong, still, foregoing invention is created measuring accuracy and is reduced, in measuring process mistake, need the mobile stepping of tester's manual adjustments air supporting motion platform, thereby cause the inconsistent of mobile stepping, the endoporus linearity of tested tube is measured effectively all sidedly, simultaneously, in test process, need tester's manual calibration, because manual operation exists larger error, thereby reduced the accuracy of test result.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of accuracy of detection is high, robotization is stronger tube endoporus linearity automatic checkout system and detection method based on photoelectricity Non-Destructive Testing are provided.
The object of the invention is to be achieved through the following technical solutions: the tube endoporus linearity automatic checkout system based on photoelectricity Non-Destructive Testing, it comprises:
Tube support: it comprises fore-stock and after-poppet, for supporting tested tube;
Generating laser: for generation of laser, provide required light source in testing process;
Photelectric receiver: for receiving the laser beam of being launched by generating laser, and convert the light signal receiving to electric signal;
Slide unit assembly: for driving photelectric receiver to arrive the detection position of specifying;
Industrial computer: for controlling the moving step length of slide unit assembly, receive the received electric signal of photelectric receiver simultaneously, and the electric signal receiving is carried out to data processing and storage;
Generating laser is arranged on the front end of tested tube by mounting bracket A, photelectric receiver is arranged on slide unit assembly by mounting bracket B, slide unit assembly is arranged in the thorax of tested tube, generating laser is connected with the control signal output terminal of industrial computer respectively with slide unit assembly, and photelectric receiver is connected with the collection signal input end of industrial computer.
Described tube support comprises fore-stock, after-poppet and connects the connecting bridge of fore-stock and after-poppet, on fore-stock and after-poppet, be equipped with nut A and nut B for regulating fore-stock and after-poppet height, fore-stock and after-poppet carry tested tube by rolling bearing respectively, and position-limited rack is also installed on fore-stock.
Described slide unit assembly comprises stepper motor and push rod, and push rod is arranged on the output shaft of stepper motor, and photelectric receiver is arranged on push rod by mounting bracket B, and the control signal input end of stepper motor is connected with industrial computer.
Described photelectric receiver is Position-Sensitive Detector.
It also comprises the keyboard that is connected with industrial computer signal input part, the printer and the display device that are connected with industrial computer signal output part respectively.
Tube endoporus linearity automatic testing method based on photoelectricity Non-Destructive Testing, it comprises the following steps:
S1: tested tube is fixed on tube support;
S2: generating laser is connected with the control signal output terminal of industrial computer respectively with stepper motor, and sets up being connected between photelectric receiver and industrial computer collection signal input end;
S3: industrial computer control step electric machine rotation, move by moving step length thereby drive push rod to promote photelectric receiver, make photelectric receiver move to the detecting position in tested tube thorax;
S4: industrial computer control generating laser Emission Lasers, the laser of launching runs through in the thorax of tested tube, and hits the surface at photelectric receiver;
S5: photelectric receiver receives the light signal of being launched by generating laser, carries out A/D conversion and filtering, and converts the light signal receiving to electric signal, is sent to industrial computer;
S6: industrial computer is processed the electric signal receiving, draws Linearity surveying data, and itself and predefined reference value are contrasted, and generates Linearity surveying datagraphic, shows by display device.
It also comprises preparation process before a detection between step S2 and S3, and before described detection, preparation process comprises the following steps:
SS21: regulate the height of fore-stock and after-poppet, the geometric center of tested tube is aimed at generating laser;
SS22: industrial computer control step electric machine rotation, to move by step-length thereby drive push rod to promote photelectric receiver, calibrate the front-end and back-end that make photelectric receiver lay respectively at tested tube.
Compared with prior art, the present invention has following beneficial effect:
1) the mobile stepping of employing industrial computer control slide unit assembly, and then the shift position of control photelectric receiver, thereby improve the mobile accuracy of slide unit assembly, avoid causing the situation inaccurate to light because of tester's manual calibration, and then can detect fully and effectively the endoporus of tested tube, and then improve the accuracy of testing result;
2) adopt generating laser and Position-Sensitive Detector, thereby realized noncontact and the lossless Linearity surveying of photoelectricity, the accuracy that has further improved testing result;
3) fore-stock of tube bracing frame and after-poppet carry tested tube by rolling bearing respectively, thereby ensure in testing process, tested tube can flexible rotating, simultaneously, position-limited rack is also installed on fore-stock, strengthened the strength of joint between tested tube and tube, the situation of having avoided tested tube to drop due to the rotation of tube bracing frame in testing process;
4) adopt generating laser as light source, because the depth of parallelism of laser is good, thereby further improved the accuracy in testing process;
5) native system simple to operate, shortened detection time fast, greatly, meanwhile, this system can also by industrial computer realize Linear Error, Linearity surveying data figure show, the function such as storage and data query of evaluation result.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is fore-stock structural representation of the present invention;
Fig. 3 is after-poppet structural representation of the present invention;
Fig. 4 is principle of work block diagram of the present invention;
Fig. 5 is the axis verticality schematic diagram of the tested tube of calculating of the present invention;
Fig. 6 is that the axis verticality at the arbitrary section place of tested tube of the present invention calculates schematic diagram;
Fig. 7 is first order Control-Menu of the present invention interface schematic diagram;
Fig. 8 is that interface schematic diagram is prepared in detection of the present invention;
Fig. 9 is that tube of the present invention detects interface schematic diagram;
In figure, 1-fore-stock, 2-after-poppet, 3-connecting bridge, the tested tube of 4-, 5-generating laser, 6-photelectric receiver, 7-stepper motor, 8-push rod, 9-slideway, 10-worktable.11-nut A, 12-position-limited rack, 21-nut B.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
As shown in Fig. 1,2,3 and 4, the tube endoporus linearity automatic checkout system based on photoelectricity Non-Destructive Testing, it comprises:
Tube support: it comprises fore-stock 1 and after-poppet 2, for supporting tested tube 4;
Generating laser 5: for generation of laser, provide required light source in testing process;
Photelectric receiver 6: for receiving the incident light by tested tube 4 endoporus reflections, and convert the light signal receiving to electric signal;
Slide unit assembly: for driving photelectric receiver 6 to arrive the detection position of specifying;
Industrial computer: for controlling the moving step length of slide unit assembly, receive the received electric signal of photelectric receiver 6 simultaneously, and the electric signal receiving is carried out to data processing and storage;
Generating laser 5 is arranged on the front end of tested tube 4 by mounting bracket A, photelectric receiver 6 is arranged on slide unit assembly by mounting bracket B, slide unit assembly is arranged in the thorax of tested tube 4, generating laser 5 is connected with the control signal output terminal of industrial computer respectively with slide unit assembly, and photelectric receiver 6 is connected with the collection signal input end of industrial computer.
The present invention is preferred, described tube support comprises fore-stock 1, after-poppet 2 and connects the connecting bridge 3 of fore-stock 1 and after-poppet 2, on fore-stock 1 and after-poppet 2, be equipped with nut A11 and nut B21 for regulating fore-stock 1 and after-poppet 2 height, fore-stock 1 and after-poppet 2 carry tested tube 4 by rolling bearing respectively, and position-limited rack 12 is also installed on fore-stock 1.
The present invention is preferred, and described slide unit assembly comprises stepper motor 7 and push rod 8, and push rod 8 is arranged on the output shaft of stepper motor 7, and photelectric receiver 6 is arranged on push rod 8 by mounting bracket B, and the control signal input end of stepper motor 7 is connected with industrial computer.
The present invention is preferred, and described photelectric receiver 6 is Position-Sensitive Detector, as PSD position transducer.
The present invention is preferred, and it also comprises the keyboard that is connected with industrial computer signal input part, the printer and the display device that are connected with industrial computer signal output part respectively.
As shown in Figure 1,2 and 3, in actual use, tube support is fixedly mounted on to be measured with on worktable 10, and slideway 9 is fixedly mounted on and is measured with on worktable 10 by slideway support C, and slide unit assembly is placed on slideway 9; Tested tube 4 is arranged on tube support, fore-stock 1 and after-poppet 2 by tube support are fixed, fore-stock 1 and after-poppet 2 are supported on respectively on the geometric center basal plane of tested tube 4, and carry tested tube 4 by rolling bearing, thereby what ensured tested tube 4 can flexible rotating in testing process, meanwhile, position-limited rack 12 is also installed on fore-stock 1, prevents that tested tube 4 from dropping in testing process; Generating laser 5 is arranged on and is measured with on worktable 10 and be positioned at the front end of tested tube 4 by mounting bracket A, photelectric receiver 6 is arranged on by mounting bracket B on the push rod 8 of slide unit assembly, push rod 8 is connected with the output shaft of stepper motor 7, and slide unit assembly is placed in the thorax of tested tube 4.In testing process, stepper motor 7 drives push rod 8 to move, thereby drives photelectric receiver 6 to move in the thorax of tested tube 4.
As shown in Figure 4, generating laser 5 is connected with the control signal output terminal of industrial computer with stepper motor 7.In testing process, tester is by industrial computer control generating laser 5 Emission Lasers, and the moving step length of control step motor 7, moving step length and then control photelectric receiver 6 by control step motor 7 move in the thorax of tested tube 4, both ensured the precision of moving step length, also ensured that in tested tube 4 thoraxes, each position can detect, improved the accuracy of testing result.
Tube endoporus linearity automatic testing method based on photoelectricity Non-Destructive Testing, it comprises the following steps:
S1: tested tube 4 is fixed on tube support;
S2: generating laser 5 is connected with the control signal output terminal of industrial computer respectively with stepper motor 7, and sets up being connected between photelectric receiver 6 and industrial computer collection signal input end;
S3: industrial computer control step motor 7 rotates, moves by step-length thereby drive push rod 8 to promote photelectric receiver 6, makes photelectric receiver 6 move to the detecting position in tested tube 4 thoraxes;
S4: industrial computer control generating laser 5 Emission Lasers, the laser of launching runs through in the thorax of tested tube 4, and hits the surface at photelectric receiver 6;
S5: photelectric receiver 6 receives the light signal of being launched by generating laser 5, carries out A/D conversion and filtering, and converts the light signal receiving to electric signal, is sent to industrial computer;
S6: industrial computer is processed the electric signal receiving, and combination and the contrast that generating laser 5 transmits, the endoporus linearity of tested tube 4 is carried out to error evaluation, draw Linearity surveying data, and generate Linearity surveying datagraphic, show by display device; And data result is kept in industrial computer, the debugging of being convenient to subsequent software is used, also can analysis result be printed for subsequent use by printer according to actual conditions.
The present invention is preferred, the described tube endoporus linearity automatic testing method based on photoelectricity Non-Destructive Testing, and it also comprises preparation process before a detection between step S2 and S3, before described detection, preparation process comprises the following steps:
SS21: regulate respectively the height of fore-stock 1 and after-poppet 2 by nut A11 and nut B12, the geometric center of tested tube 4 is aimed at generating laser 5;
SS22: industrial computer control step motor 7 rotates, thereby driving push rod 8 to promote photelectric receiver 6 moves by step-length, calibrate the front-end and back-end that make photelectric receiver 6 lay respectively at tested tube 4, in the geometric centre axes of tested tube 4, ensure the accuracy of measuring with the true origin of guaranteeing photelectric receiver 6.
The axis verticality of tested tube 4 calculates detailed process:
As illustrated in Figures 5 and 6, photelectric receiver 6 is aimed at the geometric center of tested tube 4, forms geometric center point P ', and the laser beam that generating laser 5 is launched is through the geometric center point O of tested tube 4 front end ports
1along Z
1axle is propagated, and hits the photosurface at photelectric receiver 6, is formed into exit point P; By a P ', O
1form triangle O with P
1pP ', due to PP'< < O
1p', so
In formula: β is the angle of tested tube 4 thorax inner laser bundles and datum axis, and in the time that tested tube 4 does not exist bending, β is zero degree.
Tube bending does not all start case of bending from barrel, and according to the reason of tube bending, the direction of tube bending is to the right or to the left downwards.Regard the actual axis of tube bending as a level and smooth camber line, suppose that this camber line is in a plane, the point under virtual condition on this camber line may be in this plane, but this does not affect the value of linearity.Can barrel is not bending time, the straight line at place be regarded the tangent line of level and smooth camber line when barrel is bending as.Therefore, the axis verticality at the arbitrary section place of tested tube 4 calculates schematic diagram as shown in Figure 6, arbitrary section place
P
iP
i'＝O
1P
i'sinβ （Ⅱ）
In formula: O
1p
i' be the arbitrary section place generating laser 5 Emission Lasers points of tested tube 4 apart from the distance of photelectric receiver 6 geometric centers, the distance that can move according to body obtains.
Utilize industrial computer can record a P
icoordinate be (x
i, y
i),
so P
i' the coordinate at some place is
By formula (II) substitution formula (III), obtain
In the coordinate system of tube linearity definition, the discrete coordinates on the actual axis of barrel is the opposite number of formula (4) coordinate, and the axis verticality value at the arbitrary section place of tested tube 4 is
P
i＝O
1P
i'sinβ-d
i （Ⅴ）
By poor to axis verticality value and the reference value axis verticality at the arbitrary section place of the tested tube 4 of measuring, gained difference is the linearity of tested tube 4.
The control interface of industrial computer comprises two-stage Control-Menu, as shown in Figure 7, first order Control-Menu mainly comprises detecting prepares control, tube detection control and the control that logs off, click detects preparation control and tube detection control can enter its corresponding Control-Menu interface, the second level, clicks the control that logs off and exits control interface.
As shown in Figure 8, shown detection is prepared interface and is mainly comprised and move to tested tube front port control, move to tested tube rear port control, move to detecting position control, stop motion control and open serial ports control; Before detection, testing staff is moved to tested tube front port control and is moved to tested tube rear port control by click, make photelectric receiver 6 move to respectively front port and the rear port place of tested tube 4, calibrate, on the datum axis of tested tube 4, ensure the accuracy of measuring with the true origin of guaranteeing photelectric receiver 6; Tester can move to detecting position by moving to detecting position control control photelectric receiver 6.
As shown in Figure 9, tester detects interface by tube tested tube is detected, the step-length that tester not only can set by software itself is selected, thereby the moving step length of control step motor 7, and the moving step length of stepper motor 7 can be set as the case may be, and by the moving step length of key-press input stepper motor 7, detect thereby realize robotization, also ensured the accuracy detecting, be applicable to the endoporus Linearity surveying of any tube simultaneously; Tester clicks according to concrete detection case and starts accordingly to detect control, stops detecting control, returns to test starting point control, printed report control or return to master menu control and complete corresponding operation, and can observe intuitively test result figure.Wherein XYZ coordinate represents respectively three axles of tube, and the curve in XYZ coordinate is the axis verticality of actual measurement tested tube 4 out, and the difference of it and datum axis linearity is the linearity of tested tube 4.XY coordinate graphic represents the longest point of tested tube 4 oral area section radius, the namely peak of tested tube 4 oral areas.
Claims (7)
1. the tube endoporus linearity automatic checkout system based on photoelectricity Non-Destructive Testing, is characterized in that: it comprises:
Tube support: it comprises fore-stock (1) and after-poppet (2), for supporting tested tube (4);
Generating laser (5): for generation of laser, provide required light source in testing process;
Photelectric receiver (6): for receiving the laser beam by generating laser (5) transmitting, and convert the light signal receiving to electric signal;
Slide unit assembly: for driving photelectric receiver (6) to arrive the detection position of specifying;
Industrial computer: for controlling the moving step length of slide unit assembly, receive the received electric signal of photelectric receiver (6) simultaneously, and the electric signal receiving is carried out to data processing and storage;
Generating laser (5) is arranged on the front end of tested tube (4) by mounting bracket A, photelectric receiver (6) is arranged on slide unit assembly by mounting bracket B, slide unit assembly is arranged in the thorax of tested tube (4), generating laser (5) is connected with the control signal output terminal of industrial computer respectively with slide unit assembly, and photelectric receiver (6) is connected with the collection signal input end of industrial computer.
2. the tube endoporus linearity automatic checkout system based on photoelectricity Non-Destructive Testing according to claim 1, it is characterized in that: described tube support comprises fore-stock (1), the connecting bridge (3) of after-poppet (2) and connection fore-stock (1) and after-poppet (2), on fore-stock (1) and after-poppet (2), be equipped with the nut A(11 for regulating fore-stock (1) and after-poppet (2) height) and nut B(21), fore-stock (1) and after-poppet (2) carry tested tube (4) by rolling bearing respectively, position-limited rack (12) is also installed on fore-stock (1).
3. the tube endoporus linearity automatic checkout system based on photoelectricity Non-Destructive Testing according to claim 1, it is characterized in that: described slide unit assembly comprises stepper motor (7) and push rod (8), push rod (8) is arranged on the output shaft of stepper motor (7), it is upper that photelectric receiver (6) is arranged on push rod (8) by mounting bracket B, and the control signal input end of stepper motor (7) is connected with industrial computer.
4. the tube endoporus linearity automatic checkout system based on photoelectricity Non-Destructive Testing according to claim 1, is characterized in that: described photelectric receiver (6) is Position-Sensitive Detector.
5. the tube endoporus linearity automatic checkout system based on photoelectricity Non-Destructive Testing according to claim 1, is characterized in that: it also comprises the keyboard that is connected with industrial computer signal input part, the printer and the display device that are connected with industrial computer signal output part respectively.
6. the tube endoporus linearity automatic testing method based on photoelectricity Non-Destructive Testing, is characterized in that: it comprises the following steps:
S1: tested tube (4) is fixed on tube support;
S2: generating laser (5) is connected with the control signal output terminal of industrial computer respectively with stepper motor (7), and sets up being connected between photelectric receiver (6) and industrial computer collection signal input end;
S3: industrial computer control step motor (7) rotates, moves by moving step length thereby drive push rod (8) to promote photelectric receiver (6), makes photelectric receiver (6) move to the detecting position in tested tube (4) thorax;
S4: industrial computer control generating laser (5) Emission Lasers, the laser of launching runs through in the thorax of tested tube (4), and hits the surface in photelectric receiver (6);
S5: photelectric receiver (6) receives the light signal by generating laser (5) transmitting, carries out A/D conversion and filtering, and converts the light signal receiving to electric signal, is sent to industrial computer;
S6: industrial computer is processed the electric signal receiving, draws Linearity surveying data, and itself and predefined reference value are contrasted, and generates Linearity surveying datagraphic, shows by display device.
7. the tube endoporus linearity automatic testing method based on photoelectricity Non-Destructive Testing according to claim 6, is characterized in that: it also comprises preparation process before a detection between step S2 and S3, and before described detection, preparation process comprises the following steps:
SS21: regulate the height of fore-stock (1) and after-poppet (2), the geometric center of tested tube (4) is aimed at generating laser (5);
SS22: industrial computer control step motor (7) rotates, moves by step-length thereby drive push rod (8) to promote photelectric receiver (6), and calibrate the front-end and back-end that make photelectric receiver (6) lay respectively at tested tube (4).
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| CN104165604A (en) * | 2014-07-24 | 2014-11-26 | 中北大学 | Single-laser single-PSD storage-type deep hole straightness detection device |
| CN104165603A (en) * | 2014-07-24 | 2014-11-26 | 中北大学 | Single-laser single-PSD wireless deep hole straightness detection device |
| CN106323201A (en) * | 2015-06-17 | 2017-01-11 | 徐工集团工程机械股份有限公司 | Straightness detection system |
| CN106705938A (en) * | 2016-12-26 | 2017-05-24 | 渤海造船厂集团有限公司 | Method for measuring inclination of ship stern bearing through laser |
| CN107917682A (en) * | 2016-10-10 | 2018-04-17 | 中北大学 | External Deep Hole Straightness Test Device and method |
| CN109436962A (en) * | 2018-10-11 | 2019-03-08 | 阜阳鑫合服饰有限公司 | A kind of distribution machine |
| CN110285988A (en) * | 2019-06-10 | 2019-09-27 | 江苏徐工工程机械研究院有限公司 | Hydraulic cylinder barrel inner hole straightness control system |
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| CN109436962A (en) * | 2018-10-11 | 2019-03-08 | 阜阳鑫合服饰有限公司 | A kind of distribution machine |
| CN110285988A (en) * | 2019-06-10 | 2019-09-27 | 江苏徐工工程机械研究院有限公司 | Hydraulic cylinder barrel inner hole straightness control system |
| CN116984423A (en) * | 2023-08-02 | 2023-11-03 | 中海石油(中国)有限公司深圳分公司 | Intelligent control method, device and equipment for straightening stator of submersible motor |
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