CN209910606U - PSD-based sheet groove signal acquisition device for laboratory - Google Patents
PSD-based sheet groove signal acquisition device for laboratory Download PDFInfo
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- CN209910606U CN209910606U CN201920853262.0U CN201920853262U CN209910606U CN 209910606 U CN209910606 U CN 209910606U CN 201920853262 U CN201920853262 U CN 201920853262U CN 209910606 U CN209910606 U CN 209910606U
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Abstract
The utility model relates to a sheet metal groove signal pickup assembly based on PSD for laboratory. The technical scheme is as follows: the two ends of the motion control device of the device are fixed at the middle positions of two short sides corresponding to an upper rectangular frame of a support frame of the mounting frame, and the middle part of an upper connecting beam of the photoelectric sensing device is fixedly connected with a sliding block of the motion control device. The point laser of photoelectric sensing device and the point laser mount fixed connection of the long vertical pole lower extreme of preceding mount, the long vertical pole lower extreme of back mount is fixed with the mirror that shakes through the mirror fixed plate that shakes, and the central point department of putting of lower tie-beam is fixed with PSD module fixed plate, and the PSD module is fixed at PSD module fixed plate lower plane. One end of the data acquisition card is connected with the interface of the PSD sensor, and the other end of the data acquisition card is connected with the computer. The device has strong adaptability, simple and convenient operation and small subsequent processing data volume.
Description
Technical Field
The utility model belongs to the technical field of sheet metal groove signal pickup assembly. In particular to a PSD-based sheet groove signal acquisition device for a laboratory.
Background
With the improvement of the strength and toughness of the alloy, the thin plate is widely applied to the fields of automobile manufacturing, ship manufacturing, aerospace and the like due to light weight and high strength, and the welding of the thin plate is an important ring for realizing the application of the thin plate. The automatic welding of the thin plates is the key point of domestic and foreign research, the detection of the grooves is an important link of the automatic welding, and in the actual welding process of the thin plates, the distance between two thin plates to be welded together is small, so the groove collection becomes the difficult point of the welding of the thin plates.
The patent technology of 'a welding seam tracking system and a welding seam tracking method' (CN106984926B) is a device for tracking welding seams by adopting a CCD camera, the device utilizes a line laser to be matched with a CCD to collect groove images, a point laser is utilized to detect the height change of a plate to be welded, and the two lasers make the structure of the device too complex; the focal length of the lens is required to be adjusted once when the plate to be welded is replaced once, and the operation process is complicated; the device adopts a machine vision method of the CCD sensor, and has large subsequent processing data volume, slower speed and higher cost.
Disclosure of Invention
The utility model discloses aim at overcoming the prior art defect, aim at provides a sheet metal groove signal pickup assembly based on PSD for laboratory, the device strong adaptability, easy and simple to handle and the subsequent processing data volume is little.
In order to achieve the above object, the utility model adopts the following technical scheme: the laboratory sheet groove signal acquisition device is composed of an installation frame, a motion control device and a photoelectric sensing device. The motion control device is fixed on the top of the mounting frame, and the photoelectric sensing device is fixed on the upper plane of the slide block of the motion control device.
The mounting frame is composed of a support frame and a horizontal beam. The support frame consists of a rectangular frame and four vertical beams, and the four vertical beams are respectively and vertically fixed at four corresponding corners of the rectangular frame; the horizontal beam is composed of two long beams and two short beams, the two short beams are symmetrically fixed on the lower portion of the vertical beam of the support frame along the width direction of the rectangular frame, two ends of the two long beams are fixedly connected with the two corresponding short beams, and the two long beams are symmetrically located on two sides of a perpendicular bisector of the two short beams.
The height of the horizontal beam from the ground is 0.3-0.4 times of the height of the vertical beam.
The motion control device comprises a motor, a motor flange sheet, a lead screw, a sliding block, a guide rail, a horizontal bottom plate and a bearing sheet.
The two ends of the horizontal bottom plate are correspondingly fixed at the middle positions of two short sides of the rectangular frame of the support frame, the left end and the right end of the horizontal bottom plate are fixedly connected with the corresponding bearing sheet and the motor flange sheet, one end of the lead screw is installed in the bearing sheet, the motor is fixedly connected with the motor flange sheet, and the output shaft of the motor penetrates out of the motor flange sheet and is connected with the other end of the lead screw through the coupler. The guide rail is fixed on the upper plane of the horizontal bottom plate, and the sliding groove of the sliding block is movably arranged on the guide rail; the sliding block is provided with a horizontal screw hole, and the horizontal screw hole of the sliding block is in threaded connection with the lead screw; the central line of the horizontal screw hole is parallel to the guide rail.
The photoelectric sensing device is composed of a vibrating mirror fixing plate, a vibrating mirror, a rear fixing frame, a PSD module fixing plate, a lower connecting beam, an upper connecting beam, a front fixing frame, a point laser, a data acquisition card and a computer.
The front fixing frame and the rear fixing frame have the same structure and are composed of an upper horizontal rod, a lower horizontal rod, a short vertical rod and a long vertical rod; one end of each of the upper horizontal rod and the lower horizontal rod is correspondingly connected with two ends of the short vertical rod, the other end of each of the upper horizontal rods is fixedly connected with the upper end of the long vertical rod, and the other end of each of the lower horizontal rods is horizontally and fixedly connected with the middle of the long vertical rod; an upper connecting beam is fixed at the middle position of the upper horizontal rod of the front fixing frame and the rear fixing frame, and the upper connecting beam is fixed on the upper plane of the sliding block of the motion control device.
The lower end of the long vertical rod of the front fixing frame is fixed with a point laser through a point laser fixing frame, and the lower end of the long vertical rod of the rear fixing frame is fixed with a vibrating mirror through a vibrating mirror fixing plate. A lower connecting beam is fixed at the lower end of the short vertical rod of the front fixing frame and the rear fixing frame, a PSD module fixing plate is fixed at the central position of the lower connecting beam, and the PSD module is fixed on the lower plane of the PSD module fixing plate; the axial extension line of the point laser passes through the center of the galvanometer lens.
One end of the data acquisition card is connected with an interface of the PSD sensor, the other end of the data acquisition card is connected with the computer, and the data acquisition card stores the acquired groove information into the computer.
The PSD module consists of a PSD shell, a PSD sensor, a switching ring and a lens. The adapter ring is in threaded connection with the lens, the upper plane of the adapter ring is fixedly connected with the lower plane of the PSD shell through screws, and the PSD sensor is installed in the PSD shell.
When the device works, two plates to be welded are placed on a horizontal beam, laser emitted by a point laser is projected onto a galvanometer and then reflected to the surface of the plates to be welded, and the laser is converged by a lens to form a light spot on the photosensitive surface of a PSD sensor, and the real-time coordinate of the light spot on the photosensitive surface of the PSD sensor is output through a data acquisition card and stored in a computer. The galvanometer swings back and forth within a set range at a certain rotating speed, and the formed groove cross section curve is stored in a computer for subsequent processing.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has following positive effect:
firstly, the utility model can change the scanning range of point laser by controlling the rotation angle of the galvanometer according to the change of the groove, avoid the moving element from damaging the light path, and has simple and convenient operation;
secondly, compared with the technical scheme of the CCD in the prior art, the technical scheme based on the PSD uses the laser with the same power, the light intensity of point laser collected by the PSD sensor is greater than structured light in the CCD sensor, the signal interference collected by the PSD sensor is smaller, and the accuracy of the collected data is high;
thirdly, the output signal of the PSD sensor in the utility model is point coordinate, so the collected groove signal is a point coordinate set, and the subsequent signal processing amount is small compared with the image processing;
fourth, the utility model discloses can obtain the groove information simultaneously through a point laser and treat weld plate surface altitude variation, have good adaptability to multiple groove.
Therefore, the utility model has the characteristics of strong adaptability, easy and simple to handle and the subsequent processing data volume is little.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the mounting bracket 1 in fig. 1;
FIG. 3 is a schematic diagram of the motion control device 2 of FIG. 1;
fig. 4 is a schematic structural view of the photoelectric sensing apparatus 3 in fig. 1;
fig. 5 is an enlarged schematic view of the PSD module 16 in fig. 4.
Detailed Description
The invention is further described with reference to the accompanying drawings and detailed description, so that the detailed description and some details of the invention can be more completely understood. Those skilled in the art will recognize that well-known structures have not been shown or described in detail.
Example 1
A sheet groove signal acquisition device based on PSD for a laboratory. As shown in fig. 1, the signal acquisition device for the laboratory sheet groove is composed of a mounting frame 1, a motion control device 2 and a photoelectric sensing device 3. The motion control device 2 is fixed on the top of the mounting frame 1, and the photoelectric sensing device 3 is fixed on the upper plane of a sliding block of the motion control device 2.
As shown in fig. 2, the mounting frame 1 is composed of a support frame 4 and a horizontal beam 5. The support frame 4 consists of a rectangular frame and four vertical beams, and the four vertical beams are respectively vertically fixed at four corresponding corners of the rectangular frame; the horizontal beam 5 is composed of two long beams and two short beams, the two short beams are symmetrically fixed on the lower part of the vertical beam of the support frame 4 along the width direction of the rectangular frame, two ends of the two long beams are fixedly connected with the two corresponding short beams, and the two long beams are symmetrically positioned on two sides of the perpendicular bisector of the two short beams.
The height of the horizontal beam 5 from the ground is 0.3-0.4 times of the height of the vertical beam.
As shown in fig. 3, the motion control device 2 includes a motor 6, a motor flange plate 7, a lead screw 8, a slider 9, a guide rail 10, a horizontal bottom plate 11, and a bearing plate 12.
The two ends of the horizontal bottom plate 11 are correspondingly fixed at the middle positions of two short sides of the rectangular frame of the support frame 4, the left end and the right end of the horizontal bottom plate 11 are fixedly connected with the corresponding bearing sheet 12 and the motor flange sheet 7, one end of the screw 8 is installed in the bearing sheet 12, the motor 6 is fixedly connected with the motor flange sheet 7, and the output shaft of the motor 6 penetrates out of the motor flange sheet 7 and is connected with the other end of the screw 8 through the coupler. The guide rail 10 is fixed on the upper plane of the horizontal bottom plate 11, and the sliding groove of the sliding block 9 is movably arranged on the guide rail 10; the sliding block 9 is provided with a horizontal screw hole, and the horizontal screw hole of the sliding block 9 is in threaded connection with the screw rod 8; the center line of the horizontal screw hole is parallel to the guide rail 10.
As shown in fig. 4, the photoelectric sensing device 3 is composed of a galvanometer fixing plate 13, a galvanometer 14, a rear fixing frame 15, a PSD module 16, a PSD module fixing plate 17, a lower connecting beam 18, an upper connecting beam 19, a front fixing frame 20, a point laser fixing frame 21, a point laser 22, a data acquisition card 23, and a computer 24.
The front fixing frame 20 and the rear fixing frame 15 have the same structure and are composed of an upper horizontal rod, a lower horizontal rod, a short vertical rod and a long vertical rod; one end of each of the upper horizontal rod and the lower horizontal rod is correspondingly connected with two ends of the short vertical rod, the other end of each of the upper horizontal rods is fixedly connected with the upper end of the long vertical rod, and the other end of each of the lower horizontal rods is horizontally and fixedly connected with the middle of the long vertical rod; an upper connecting beam 19 is fixed at the middle position of the upper horizontal rod of the front fixing frame 20 and the rear fixing frame 15, and the upper connecting beam 19 is fixed on the upper plane of the sliding block 9 of the motion control device 2.
The lower end of the long vertical rod of the front fixing frame 20 is fixed with a point laser 22 through a point laser fixing frame 21, and the lower end of the long vertical rod of the rear fixing frame 15 is fixed with a galvanometer 14 through a galvanometer fixing plate 13. A lower connecting beam 18 is fixed at the lower end of the short vertical rod of the front fixing frame 20 and the rear fixing frame 15, a PSD module fixing plate 17 is fixed at the central position of the lower connecting beam 18, and a PSD module 16 is fixed on the lower plane of the PSD module fixing plate 17; the axial extension of the point laser 22 passes through the center of the mirror 14.
One end of the data acquisition card 23 is connected with an interface of the PSD sensor 26, the other end of the data acquisition card 23 is connected with the computer 24, and the data acquisition card 23 stores the acquired groove information into the computer 24.
As shown in fig. 5, the PSD module 16 is composed of a PSD shell 25, a PSD sensor 26, an adapter ring 27, and a lens 28; the adapter ring 27 is in threaded connection with the lens 28, the upper plane of the adapter ring 27 is fixedly connected with the lower plane of the PSD shell 25 through screws, and the PSD sensor 26 is installed in the PSD shell 25.
When the device works, two plates to be welded are placed on the horizontal beam 5, laser emitted by the point laser 22 is projected onto the galvanometer 14 and then reflected to the surfaces of the plates to be welded, and is converged by the lens 28 to form a light spot on the photosensitive surface of the PSD sensor 26, and the real-time coordinate of the light spot on the photosensitive surface of the PSD sensor 26 is output by the signal acquisition card 23 and stored in the computer 24. The galvanometer 14 performs reciprocating oscillation within a set range at a certain rotating speed, and the formed groove cross section curve is stored in the computer 24 for subsequent processing.
Compared with the prior art, the specific implementation mode has the following positive effects:
first, in the present embodiment, the scanning range of the point laser can be changed by controlling the rotation angle of the galvanometer 14 according to the change of the groove, so that the moving element is prevented from damaging the optical path, and the operation is simple;
secondly, compared with the technical scheme of the CCD in the prior art, the technical scheme based on the PSD in this embodiment uses the laser with the same power, the light intensity of the point laser collected by the PSD sensor 26 is greater than the structured light in the CCD sensor, the interference of the signal collected by the PSD sensor 26 is smaller, and the accuracy of the collected data is high;
thirdly, the output signal of the PSD sensor 26 in this embodiment is a point coordinate, so the collected groove signal is a point coordinate set, and the subsequent signal processing amount is small compared with the image processing;
fourth, the present embodiment can obtain the groove information and the height change of the surface of the plate to be welded simultaneously by one spot laser 22, and has good adaptability to various grooves.
Therefore, the specific implementation mode has the characteristics of strong adaptability, simple and convenient operation and small subsequent processing data volume.
Claims (1)
1. A PSD-based sheet groove signal acquisition device for a laboratory is characterized by comprising a mounting frame (1), a motion control device (2) and a photoelectric sensing device (3); the motion control device (2) is fixed on the top of the mounting frame (1), and the photoelectric sensing device (3) is fixed on the upper plane of a sliding block of the motion control device (2);
the mounting frame (1) is composed of a support frame (4) and a horizontal beam (5); the support frame (4) consists of a rectangular frame and four vertical beams, and the four vertical beams are respectively and vertically fixed at four corresponding corners of the rectangular frame; the horizontal beam (5) consists of two long beams and two short beams, the two short beams are symmetrically fixed at the lower part of the vertical beam of the support frame (4) along the width direction of the rectangular frame, two ends of the two long beams are fixedly connected with the two corresponding short beams, and the two long beams are symmetrically positioned at two sides of the vertical bisector of the two short beams;
the height of the horizontal beam (5) from the ground is 0.3-0.4 times of the height of the vertical beam;
the motion control device (2) comprises a motor (6), a motor flange sheet (7), a lead screw (8), a sliding block (9), a guide rail (10), a horizontal bottom plate (11) and a bearing sheet (12);
the two ends of a horizontal bottom plate (11) are correspondingly fixed at the middle positions of two short sides of a rectangular frame of a support frame (4), the left end and the right end of the horizontal bottom plate (11) are fixedly connected with a corresponding bearing sheet (12) and a motor flange sheet (7), one end of a lead screw (8) is installed in the bearing sheet (12), a motor (6) is fixedly connected with the motor flange sheet (7), and an output shaft of the motor (6) penetrates through the motor flange sheet (7) and is connected with the other end of the lead screw (8) through a coupler; the guide rail (10) is fixed on the upper plane of the horizontal bottom plate (11), and the sliding groove of the sliding block (9) is movably arranged on the guide rail (10); the sliding block (9) is provided with a horizontal screw hole, and the horizontal screw hole of the sliding block (9) is in threaded connection with the screw rod (8); the central line of the horizontal screw hole is parallel to the guide rail (10);
the photoelectric sensing device (3) consists of a vibrating mirror fixing plate (13), a vibrating mirror (14), a rear fixing frame (15), a PSD module (16), a PSD module fixing plate (17), a lower connecting beam (18), an upper connecting beam (19), a front fixing frame (20), a point laser fixing frame (21), a point laser (22), a data acquisition card (23) and a computer (24);
the front fixing frame (20) and the rear fixing frame (15) are identical in structure and are composed of an upper horizontal rod, a lower horizontal rod, a short vertical rod and a long vertical rod, one end of the upper horizontal rod and one end of the lower horizontal rod are correspondingly connected with two ends of the short vertical rod, the other end of the upper horizontal rod is fixedly connected with the upper end of the long vertical rod, and the other end of the lower horizontal rod is horizontally and fixedly connected with the middle of the long vertical rod; an upper connecting beam (19) is fixed in the middle of the upper horizontal rods of the front fixing frame (20) and the rear fixing frame (15), and the upper connecting beam (19) is fixed on the upper plane of a sliding block (9) of the motion control device (2);
a point laser (22) is fixed at the lower end of the long vertical rod of the front fixing frame (20) through a point laser fixing frame (21), and a galvanometer (14) is fixed at the lower end of the long vertical rod of the rear fixing frame (15) through a galvanometer fixing plate (13); a lower connecting beam (18) is fixed at the lower end of the short vertical rod of the front fixing frame (20) and the rear fixing frame (15), a PSD module fixing plate (17) is fixed at the central position of the lower connecting beam (18), and a PSD module (16) is fixed on the lower plane of the PSD module fixing plate (17); the axial extension line of the point laser (22) passes through the center of the lens of the galvanometer (14);
one end of the data acquisition card (23) is connected with an interface of the PSD sensor (26), the other end of the data acquisition card (23) is connected with the computer (24), and the data acquisition card (23) stores the acquired groove information into the computer (24);
the PSD module (16) consists of a PSD shell (25), a PSD sensor (26), an adapter ring (27) and a lens (28); the adapter ring (27) is in threaded connection with the lens (28), the upper plane of the adapter ring (27) is fixedly connected with the lower plane of the PSD shell (25) through screws, and the PSD sensor (26) is installed in the PSD shell (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920853262.0U CN209910606U (en) | 2019-06-06 | 2019-06-06 | PSD-based sheet groove signal acquisition device for laboratory |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920853262.0U CN209910606U (en) | 2019-06-06 | 2019-06-06 | PSD-based sheet groove signal acquisition device for laboratory |
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| CN209910606U true CN209910606U (en) | 2020-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230991A (en) * | 2019-06-06 | 2019-09-13 | 武汉科技大学 | A kind of use for laboratory thin plate groove signal pickup assembly based on PSD |
-
2019
- 2019-06-06 CN CN201920853262.0U patent/CN209910606U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230991A (en) * | 2019-06-06 | 2019-09-13 | 武汉科技大学 | A kind of use for laboratory thin plate groove signal pickup assembly based on PSD |
| CN110230991B (en) * | 2019-06-06 | 2024-02-20 | 武汉科技大学 | PSD-based laboratory sheet groove signal acquisition device |
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