CN204374150U - A kind of ultrasonic no damage detection device for detecting metal bar - Google Patents
A kind of ultrasonic no damage detection device for detecting metal bar Download PDFInfo
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- CN204374150U CN204374150U CN201520064697.9U CN201520064697U CN204374150U CN 204374150 U CN204374150 U CN 204374150U CN 201520064697 U CN201520064697 U CN 201520064697U CN 204374150 U CN204374150 U CN 204374150U
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- stepper motor
- ultrasonic probe
- fixed part
- slide rail
- pick
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Abstract
The utility model discloses a kind of ultrasonic no damage detection device for detecting metal bar, belonging to ultrasonic no damage detection device technical field.This pick-up unit comprises: the first fixed part (2), the second fixed part (7), and is positioned at the ultrasound examination parts between the first fixed part (2) and the second fixed part (7); Described ultrasound examination parts comprise ultrasonic probe (13) and coupled water water supply installation (3); Described pick-up unit also comprises the first slide rail (10), the first stepper motor (1), the second stepper motor (9), the first photoelectric encoder (8), the second photoelectric encoder (11) and control module (14).Photoelectric encoder detects the actual motion situation of stepper motor and testing result is fed back to control module, avoid cause due to step out of stepping motor inaccurate problem is located to metal bar defective locations, improve the accuracy of metal bar defects detection.
Description
Technical field
The utility model relates to a kind of ultrasonic no damage detection device for detecting metal bar, belongs to ultrasonic no damage detection device technical field.
Background technology
Metal bar material particularly copper rod material is widely used in the field such as machine-building, electronic technology.If the inner existing defects of metal bar (as crackle, be mingled with, pore etc.), can affect the use of metal bar.For copper rod, for a long time owing to lacking effective checkout equipment, copper rod material Inner Defect Testing problem is never solved well.Constrain most domestic copper rod manufacturing enterprise's benefit and development to a great extent.So, necessaryly to study for the checkout equipment of copper rod inherent vice specially.
Ultrasonic NDT is one of five kinds of conventional lossless detection methods (Ultrasonic Detection, ray detection, Magnetic testing, Liquid penetrant testing, EDDY CURRENT), compared with other conventional Dynamic Non-Destruction Measurements, it is wide that it has measurand scope, the detection degree of depth is large, and defect location is accurate, and detection sensitivity is high, cost is low, easy to use, speed is fast, harmless and be convenient to the advantages such as onsite application.Therefore, ultrasonic non-destructive inspection techniques is that domestic and international application is the most extensive, frequency of utilization is the highest and develops a kind of Dynamic Non-Destruction Measurement faster.Also there is the copper rod defectoscope based on Ultrasonic Nondestructive in existing market, comprise copper wire copper rod supersonic detector, ultrasonic nondestructive detecting instrument, digital supersonic flaw detector etc.The workflow of this quasi-instrument is see Fig. 1, the driving circuit of stepper motor sends gating pulse, stepper motor rotates, and drives its topworks to move (ultrasonic probe or measured workpiece), and then ultrasonic probe starts to launch ultrasound wave and carries out Ultrasonic Detection.Data handling system judges the position of defect according to gating pulse.But in actual application, the control system formed due to stepper motor and driving circuit is open loop, stepper motor often produces step-out phenomenon, namely the rotational angle of stepper motor reality does not conform to gating pulse, and data handling system still judges the position of defect according to gating pulse, defective locations Wrong localization will be made like this, affect the accuracy of Ultrasonic Detection.
To sum up, designer finds at least there is following problem in prior art: existing ultrasonic no damage detection device can not detect the actual motion situation of stepper motor after receiving gating pulse, can cause due to step out of stepping motor metal bar defective locations location inaccurate, affect the accuracy of Ultrasonic Detection.
Utility model content
For solving the problems of the technologies described above, the utility model embodiment provides a kind of ultrasonic no damage detection device for detecting metal bar, specifically, comprises following technical scheme:
A kind of ultrasonic no damage detection device for detecting metal bar, this pick-up unit comprises: for the first fixed part of the first end of fixing measured metal rod, for the second fixed part of the second end of fixing measured metal rod, and the ultrasound examination parts between the first fixed part and the second fixed part;
Described ultrasound examination parts comprise for launching and/or receiving hyperacoustic ultrasonic probe and for the coupled water water supply installation providing coupled water between ultrasonic probe and measured metal rod;
Described pick-up unit also comprises the first slide rail, the first stepper motor, the second stepper motor, the first photoelectric encoder, the second photoelectric encoder and control module;
Described first stepper motor, being connected with described first fixed part, rotating for driving measured metal rod around its central axis;
Described second stepper motor, and for guiding described ultrasound examination parts to be connected along described first slide rail of the length direction movement of measured metal rod, moves along the length direction of measured metal rod for driving described ultrasound examination parts;
Described first photoelectric encoder, installs with described first stepping motor coaxle; For detecting the rotational angle of the first stepper motor, obtain the first detection signal, and described first detection signal is sent;
Described second photoelectric encoder, installs with described second stepping motor coaxle; For detecting the rotational angle of the second stepper motor, obtain the second detection signal, and described second detection signal is sent;
Described control module, for receiving the first detection signal and the second detection signal, and sends control signal to control the rotation of described first stepper motor and/or described second stepper motor to described first stepper motor and/or described second stepper motor.
Further, described pick-up unit also comprises web joint, and described web joint is arranged on the first slide rail, and described ultrasound examination parts are connected with the first slide rail by described connection version.
Further, described ultrasonic probe comprises the first ultrasonic probe and the second ultrasonic probe, described first ultrasonic probe and described second ultrasonic probe are oppositely arranged, and the center of described first ultrasonic probe is used for being used for vertical with the line at the center at the position that measured metal rod second end is connected with the center at the position that measured metal rod first end is connected with described second fixed part with the line at the center of the second ultrasonic probe and described first fixed part.
Further, described first ultrasonic probe and the second ultrasonic probe are have the ultrasonic probe launched ultrasound wave and receive ultrasound wave function, i.e. the ultrasonic probe of transceiver.
Further, described second fixed part is arranged on the second slide rail by slide block, and described second slide rail is parallel with described first slide rail.
Further, described first slide rail is also provided with photoelectric control limit switch, for limiting the moving range of described web joint according to the length of measured metal rod.
Further, described pick-up unit also comprises base, and described first slide rail, the first stepper motor and the second stepper motor are arranged on base.
The beneficial effect of the technical scheme that the utility model embodiment provides is: in Ultrasonic NDT pick-up unit, arrange photoelectric encoder, photoelectric encoder and stepper motor are coaxially installed, after control module sends gating pulse to stepper motor, photoelectric encoder can detect the rotational angle of stepper motor reality, and testing result is fed back to control module, such stepper motor, photoelectric encoder and control module define the control system of a closed loop.If step-out phenomenon appears in stepper motor, control module then can send gating pulse to stepper motor again.Doing so avoids its first fixed part driven, the ultrasound examination parts that cause due to step out of stepping motor and inaccurate problem is located to metal bar defective locations, improve the accuracy of metal bar defects detection.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is Ultrasonic Detection schematic flow sheet in prior art;
Fig. 2 is the ultrasonic no damage detection device structural representation of the utility model embodiment;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the process flow diagram that embodiment detects step out of stepping motor.
Mark in figure represents respectively:
1, the first stepper motor; 2, the first fixed part; 3, coupled water water supply installation;
4, metal bar; 41, metal bar first end; 42, metal bar second end;
5, the second slide rail; 6, slide block;
7, the second fixed part; 8, the first photoelectric encoder; 9, the second stepper motor;
10, the first slide rail; 11, the second photoelectric encoder; 12, web joint;
13, ultrasonic probe; 131, the first ultrasonic probe; 132, the second ultrasonic probe;
14, control module;
15, photoelectric control limit switch; 16, base.
Embodiment
For making the technical scheme of the utility model embodiment and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
As shown in Figure 2, Fig. 3 is the vertical view of Fig. 2 to the structure of the ultrasonic no damage detection device for detecting metal bar of the utility model embodiment.Composition graphs 2 and Fig. 3, this pick-up unit comprises:
For the first fixed part 2 of the first end 41 of fixing measured metal rod 4, for the second fixed part 7 of the second end 42 of fixing measured metal rod 4, and the ultrasound examination parts between the first fixed part 2 and the second fixed part 7; Described ultrasound examination parts comprise for launching and/or receiving hyperacoustic ultrasonic probe 13 and for the coupled water water supply installation 3 providing coupled water between ultrasonic probe 13 and measured metal rod 4.
Described pick-up unit also comprises the first slide rail 10, first stepper motor 1, second stepper motor 9, first photoelectric encoder 8, second photoelectric encoder 11 and control module 14;
Described first stepper motor 1, being connected with described first fixed part 2, rotating for driving measured metal rod around its central axis;
Described second stepper motor 9, and for guiding described ultrasound examination parts to be connected along described first slide rail 10 of the length direction movement of measured metal rod, moves along the length direction of measured metal rod for driving described ultrasound examination parts;
Described first photoelectric encoder 8, coaxially installs with described first stepper motor 1; For detecting the rotational angle of the first stepper motor 1, obtain the first detection signal, and described first detection signal is sent;
Described second photoelectric encoder 11, coaxially installs with described second stepper motor 9; For detecting the rotational angle of the second stepper motor 9, obtain the second detection signal, and described second detection signal is sent;
Described control module 14, for receiving the first detection signal and the second detection signal, and sends control signal to control the rotation of described first stepper motor 1 and/or described second stepper motor 9 to described first stepper motor 1 and/or described second stepper motor 9.
In above-mentioned detection device, photoelectric encoder is a kind of optical device, be arranged on the load output shaft of the reducing gear of stepper motor, when stepper motor rotates in the gating pulse received from control module 14, also photoelectric encoder can be driven to rotate, the optical element of the precision now in photoelectric encoder is by detecting the rotational angle of stepper motor load output shaft and then detecting the rotational angle of stepper motor, and testing result is fed back to control module 14, compare with control wave, judge that whether the angle of stepper motor actual rotation is corresponding with gating pulse, if inconsistent, control module 14 sends gating pulse to stepper motor again, such stepper motor, photoelectric encoder and control module define the control system of a closed loop, avoid cause due to step out of stepping motor inaccurate problem is located to metal bar defective locations, improve the accuracy of metal bar defects detection.
Control module 14 comprises master cpu (microprocessor), the driver of stepper motor and relevant circuit etc.Completed by master cpu the testing result of photoelectric encoder and the com-parison and analysis of gating pulse, the output signal of photoelectric encoder, before transmitting back master cpu, first will become the signal of master cpu accreditation through modulate circuit conditioning.
Fig. 4 is the process flow diagram detecting step out of stepping motor, composition graphs 4, and the idiographic flow detecting step out of stepping motor is:
First send gating pulse (i.e. control signal) by control module 14 to the second stepper motor 9, the second stepper motor 9 rotates after reception gating pulse, drives the second photoelectric coding 11 to rotate and ultrasound examination parts move simultaneously.Second photoelectric encoder 11 detects the actual rotation angle of the second stepper motor 9, and testing result (i.e. the second detection signal) is fed back to control module 14, judge that whether the actual rotation angle of the second stepper motor 9 is consistent with gating pulse, if inconsistent, control module 14 sends gating pulse again, until the actual rotation angle of the second stepper motor 9 is consistent with gating pulse.Avoid due to the second stepper motor 9 step-out cause to metal bar defect axial location mistake.Then, control module 14 sends gating pulse to the first stepper motor 1, and the first stepper motor 1 rotates after reception gating pulse, drives the first photoelectric coding 8 to rotate and metal bar 4 rotates around its central axis simultaneously.First photoelectric encoder 8 detects the actual rotation angle of the first stepper motor 1, and testing result (i.e. the first detection signal) is fed back to control module 14, judge that whether the actual rotation angle of the first stepper motor 1 is consistent with gating pulse, if inconsistent, control module 14 sends gating pulse again, until the actual rotation angle of the first stepper motor 1 is consistent with gating pulse.Prevent due to the first stepper motor 1 step-out cause to metal bar 4 defect radial location mistake.After the first stepper motor 1 is all consistent with gating pulse with the actual rotation angle of the second stepper motor 9, ultrasonic probe 13 is launched and/or is received ultrasound wave, starts to detect metal bar 4.
In above-mentioned pick-up unit, the concrete form of the first fixed part 2, second fixed part 7 does not have considered critical, as long as metal bar 4 can be made in testing process to keep stable.Meanwhile, the line at the center of the first fixed part 2 and the center of the second fixed part 7 will overlap with the central shaft of metal bar 4, ensures the right alignment of metal bar 4.The first fixed part 2 shown in Fig. 2 and Fig. 3 is scroll chuck; Second fixed part 7 is top, namely has the fixed part of tip.
In above-mentioned pick-up unit, also comprise web joint 12, described web joint 12 is arranged on the first slide rail 10, and described ultrasound examination parts are connected with the first slide rail 10 by described connection version 12.By driving, web joint 12 is mobile on the first slide rail 10 drives ultrasound examination parts salt metal bar 4 length direction to move to second stepper motor 8.
Two ultrasonic probes are provided with in supersonic detection device shown in Fig. 2 and Fig. 3, i.e. the first ultrasonic probe 131 and the second ultrasonic probe 132, first ultrasonic probe 131 and the second ultrasonic probe 132 are oppositely arranged, lay respectively at the both sides of metal bar 4, the center of the first ultrasonic probe 131 and the line at the center of the second ultrasonic probe 132 with the first fixed part 2 for vertical for the line at the center with the position that measured metal rod second end 42 is connected with the second fixed part 7 with the center at the position that measured metal rod first end 41 is connected.And the first ultrasonic probe 131 and the second ultrasonic probe 132 are for having the ultrasonic probe launched ultrasound wave and receive ultrasound wave function, i.e. the ultrasonic probe of transceiver.Arrange ultrasonic probe like this, make supersonic detection device of the present utility model can realize the three dimensional stress of metal bar defects detection, quantification and robotization, detailed process is as follows:
Rotate corresponding angle after second stepper motor 9 receives gating pulse, drive ultrasound examination parts to move corresponding distance along metal bar 4 length direction, make the first ultrasonic probe 131 and the second ultrasonic probe 132 be positioned at a certain section place of metal bar 4.If detect that the second stepper motor 9 there occurs step-out, then again send gating pulse by control module 14.Then, the first stepper motor 1 receives gating pulse and rotates corresponding angle, and drive chuck 2 to rotate corresponding angle, metal bar 4 also rotates respective angles around its central axis thereupon.If detect that the first stepper motor 1 there occurs step-out, then again send gating pulse by control module 14.Now, the first ultrasonic probe 131 and the second ultrasonic probe 132 transmit and receive ultrasound wave respectively, after metal bar 4 relative starting position rotates 180 °, complete the detection to this section circumference 360 °.Obtain the two-dimentional radial section defect profile of metal bar 4.After scanning is completed to a two-dimentional radial section, second stepper motor 9 receives gating pulse again and rotates corresponding angle, ultrasound examination parts are driven to move corresponding distance along metal bar 4 length direction, thus make the first ultrasonic probe 131 and the second ultrasonic probe 132 be positioned at next section place of metal bar 4, obtain the two-dimentional radial section defect profile of another metal bar 4.By the position relationship of metal bar 4 length direction corresponding with it for the radial section profile of each two dimension by data processing software, analyze the 3 D defects image obtaining whole metal bar 4, thus realize three dimensional stress, the quantification of metal bar 4 defects detection.
In above-mentioned pick-up unit, the second fixed part 7 is arranged on the second slide rail 5 by slide block 6, and the second slide rail 5 is parallel with the first slide rail 10.Slide block 6 can slide on the second slide rail 5, thus drives the second fixed part 7 to move on the second slide rail 5, according to the length of metal bar 4, regulates the distance between the second fixed part 7 and the first fixed part 2, metal bar 4 is fixed.
In above-mentioned pick-up unit, the first slide rail 10 is also provided with photoelectric control limit switch 15, for limiting the moving range of described web joint 12.The quantity of photoelectric control limit switch 15 is 2, the length range that their position is tested according to metal bar 4 regulates, be arranged on the starting and ending position that metal bar 4 is tested respectively, by limiting the moving range of web joint 12 and then controlling the moving range of ultrasound examination parts.
In above-mentioned pick-up unit, also comprise base 16, described first slide rail 10, first stepper motor 1 and the second stepper motor 9 etc. are all arranged on base 16, are convenient to moving integrally of pick-up unit.
In above-mentioned pick-up unit, the concrete form of coupled water water supply installation 3 does not have considered critical, as long as can ensure there is sufficient coupled water in Ultrasonic Detection process between ultrasonic probe 13 and metal bar 4.Coupled water water supply installation 3 shown in Fig. 2 and Fig. 3 comprises casing, the tank of box house and the water pump of box house; Water in casing is transported in tank by water pump, and when carrying out Ultrasonic Detection, the water logging in tank there is not ultrasonic probe 13 and measured metal rod 4, and the part detected in metal bar 4 local realizes full immersion water coincidence.In testing process, between coupled water and ultrasonic probe 13, metal bar 4, be in the state of geo-stationary, under the prerequisite few at coupled water consumption, device volume is little, realize fully coupling.
To sum up, the metal bar defect ultrasonic no damage detection device of the utility model embodiment operationally, photoelectric encoder can detect the actual rotation situation of stepper motor coaxial mounted with it, and testing result is fed back to control module, thus stepper motor, photoelectric encoder and control module is made to define the control system of a closed loop.If stepper motor generation step-out phenomenon, control module again can send gating pulse after the testing result receiving photoelectric encoder feedback, avoid cause due to step out of stepping motor inaccurate problem is located to metal bar defective locations, improve the accuracy of detection.
The above is only understand the technical solution of the utility model for the ease of those skilled in the art, not in order to limit the utility model.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. one kind for detecting the ultrasonic no damage detection device of metal bar, comprise: for first fixed part (2) of the first end of fixing measured metal rod, for second fixed part (7) of the second end of fixing measured metal rod, and be positioned at the ultrasound examination parts between the first fixed part (2) and the second fixed part (7);
Described ultrasound examination parts comprise for launching and/or receiving hyperacoustic ultrasonic probe (13) and for the coupled water water supply installation (3) providing coupled water between ultrasonic probe and measured metal rod;
It is characterized in that,
Described pick-up unit also comprises the first slide rail (10), the first stepper motor (1), the second stepper motor (9), the first photoelectric encoder (8), the second photoelectric encoder (11) and control module (14);
Described first stepper motor (1), being connected with described first fixed part (2), rotating for driving measured metal rod around its central axis;
Described second stepper motor (9), with for guiding described ultrasound examination parts to be connected along described first slide rail (10) of the length direction movement of measured metal rod, move along the length direction of measured metal rod for driving described ultrasound examination parts;
Described first photoelectric encoder (8), coaxially installs with described first stepper motor (1); For detecting the rotational angle of the first stepper motor (1), obtain the first detection signal, and described first detection signal is sent;
Described second photoelectric encoder (11), coaxially installs with described second stepper motor (9); For detecting the rotational angle of the second stepper motor (9), obtain the second detection signal, and described second detection signal is sent;
Described control module (14), for receiving the first detection signal and the second detection signal, and send control signal to control the rotation of described first stepper motor (1) and/or described second stepper motor (9) to described first stepper motor (1) and/or described second stepper motor (9).
2. pick-up unit according to claim 1, it is characterized in that, described pick-up unit also comprises web joint (12), described web joint (12) is arranged on the first slide rail (10), and described ultrasound examination parts are connected with the first slide rail (10) by described connection version (12).
3. pick-up unit according to claim 1, it is characterized in that, described ultrasonic probe (13) comprises the first ultrasonic probe (131) and the second ultrasonic probe (132), described first ultrasonic probe (131) and described second ultrasonic probe (132) are oppositely arranged, the center of described first ultrasonic probe (131) and the line at the center of the second ultrasonic probe (132) with described first fixed part (2) for vertical for the line at the center with the position that measured metal rod second end is connected with described second fixed part (7) with the center at the position that measured metal rod first end is connected.
4. pick-up unit according to claim 3, is characterized in that, described first ultrasonic probe (131) and the second ultrasonic probe (132) are for having the ultrasonic probe launched ultrasound wave and receive ultrasound wave function.
5. pick-up unit according to claim 1, it is characterized in that, described second fixed part (7) is arranged on the second slide rail (5) by slide block (6), and described second slide rail (5) is parallel with described first slide rail (10).
6. pick-up unit according to claim 1, it is characterized in that, described first slide rail (10) is also provided with photoelectric control limit switch (15), for limiting the moving range of described web joint (12) according to the length of measured metal rod.
7. pick-up unit according to claim 1, it is characterized in that, described pick-up unit also comprises base (16), and described first slide rail (10), the first stepper motor (1) and the second stepper motor (9) are arranged on base (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064697.9U CN204374150U (en) | 2015-01-29 | 2015-01-29 | A kind of ultrasonic no damage detection device for detecting metal bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064697.9U CN204374150U (en) | 2015-01-29 | 2015-01-29 | A kind of ultrasonic no damage detection device for detecting metal bar |
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| Publication Number | Publication Date |
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| CN204374150U true CN204374150U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520064697.9U Expired - Fee Related CN204374150U (en) | 2015-01-29 | 2015-01-29 | A kind of ultrasonic no damage detection device for detecting metal bar |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388215A (en) * | 2015-12-14 | 2016-03-09 | 华北电力科学研究院有限责任公司 | Steel plate ultrasonic detection defect position recording apparatus |
| CN109187750A (en) * | 2018-09-28 | 2019-01-11 | 烟台大学 | Pipeline routine |
| CN112285203A (en) * | 2020-10-22 | 2021-01-29 | 杭州道森科技有限公司 | Dual-track ultrasonic defect positioning method and system |
-
2015
- 2015-01-29 CN CN201520064697.9U patent/CN204374150U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388215A (en) * | 2015-12-14 | 2016-03-09 | 华北电力科学研究院有限责任公司 | Steel plate ultrasonic detection defect position recording apparatus |
| CN109187750A (en) * | 2018-09-28 | 2019-01-11 | 烟台大学 | Pipeline routine |
| CN112285203A (en) * | 2020-10-22 | 2021-01-29 | 杭州道森科技有限公司 | Dual-track ultrasonic defect positioning method and system |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20150603 Termination date: 20160129 |
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