CN214583091U - Online measuring device for bending angle of plate - Google Patents
Online measuring device for bending angle of plate Download PDFInfo
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- CN214583091U CN214583091U CN202120520635.XU CN202120520635U CN214583091U CN 214583091 U CN214583091 U CN 214583091U CN 202120520635 U CN202120520635 U CN 202120520635U CN 214583091 U CN214583091 U CN 214583091U
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- line laser
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Abstract
The utility model belongs to the technical field of the industrial measurement technique is relevant, it discloses a panel bending angle on-line measuring device, the device includes two sets of sensors and host computer, two sets of sensors are located respectively at the back of the panel to be bent and are located respectively at the two sides of the back of the lower die carrying the panel to be bent; each set of sensors includes: a line laser; two cameras arranged at two sides of the line laser; the camera and the line laser are arranged in the body; the sliding rail is parallel to the direction of the plate in the bending process of the plate, the body is arranged on the sliding rail in a sliding mode so that the linear laser emitted by the linear laser is emitted to the back of the plate, and the camera is used for acquiring an image of the back of the plate and transmitting the image to the upper computer; the upper computer is used for processing the image from the camera to obtain the bending angle of the plate to be bent. The method and the device have the advantages of no contact, high measuring speed, high measuring precision, low cost and the like.
Description
Technical Field
The utility model belongs to the technical field of the industrial measurement, more specifically relates to a panel bending angle on-line measuring device.
Background
Bending of the plate is an important and widely applied processing technology in industrial production. The plate is easy to rebound in the bending process, and processing errors are caused by plate internal stress and plate thickness unevenness, so that the bending precision can be ensured only by measuring the bending angle in real time.
The traditional detection modes for measuring the bending angle are two, one mode is manual detection, the precision of the angle, the straight line and the like is manually measured after the first piece is bent, and then the precision is corrected by adjusting a related compensation device, so that the defects of low efficiency, poor adaptability, low precision and the like are exposed; the other is a semi-closed loop control mode, namely the upper die is adjusted to press down to control the bending angle, the forming angle of the plate is related to the die opening, the thickness of the plate, the resilience of the material and the upper die pressing amount, and the numerical control device can only control the upper die pressing amount and cannot make full use of errors caused by factors outside the loop. Therefore, it is necessary to design a new device for measuring the bending angle of a plate.
SUMMERY OF THE UTILITY MODEL
To the defect of prior art, the utility model aims to provide a panel bending angle on-line measuring device aims at solving among the current measurement inefficiency, adaptability poor, the low scheduling problem of precision.
In order to achieve the above object, the utility model provides a panel bending angle on-line measuring device, a serial communication port, the device includes two sets of sensors and host computer, and two sets of sensors are located the both sides that bear the lower mould of waiting to bend panel mutually respectively, and the sensor with the host computer is connected, and every group sensor includes: a line laser; the two cameras are arranged on two sides of the line laser; the camera and the line laser are arranged in the body along the length direction of the body; the sliding rail is parallel to the direction of the plate in the bending process of the plate, the body is arranged on the sliding rail in a sliding mode, the length direction of the body is parallel to the sliding rail, so that the linear laser emitted by the linear laser is emitted to the back of the plate and the surface of the lower die, and the camera is used for collecting images of the back of the plate and the surface of the lower die and transmitting the images to the upper computer; the upper computer is used for processing the image from the camera to obtain the bending angle of the plate to be bent.
Preferably, part of the laser light emitted by the line laser is perpendicular to the plane of the plate, and part of the laser light is perpendicular to the surface of the lower die.
Preferably, the body includes inside casing and base, line laser ware and two cameras are located in the inside casing, the base is the U font, be equipped with the arc fluting on the both sides board of U font, the both ends of inside casing are equipped with the arch, the arch set up in with sliding in the arc fluting.
Preferably, a fixing cap is movably arranged on the protrusion and used for fixing the inner frame at the position of the arc-shaped groove.
Preferably, the central angle of the arc-shaped slot is 30-90 degrees.
Preferably, the slide rail still includes the slide, slide one end and slide rail cooperation, the other end and base fixed connection.
Preferably, the two-phase machine is symmetrically arranged at two sides of the line laser.
Preferably, the body further comprises a transparent protective cover, and the transparent protective cover is arranged on the periphery of the inner frame.
Through the utility model discloses above technical scheme who thinks, compare with prior art, this application has following beneficial effect:
1. the bending angle can be measured by arranging two groups of sensors, wherein each group of sensors comprises two industrial cameras and a line laser, and the bending angle measuring device has the advantages of no contact, high measuring speed, high measuring precision, low cost and the like;
2. the industrial camera and the line laser are arranged on the slide rail, so that the total length of the solid bent plate can be conveniently measured, the cost is low, and the industrial application is facilitated;
3. the data are processed through the upper computer, manual calculation is not needed, special technical requirements on operators are avoided, the labor intensity of workers is reduced, and the productivity is liberated;
4. can be applicable to different station needs through the angle of arc fluting control line laser instrument and camera, accommodation is wide.
Drawings
FIG. 1 is a schematic view showing a structure of a part of the apparatus in the sheet bending angle on-line measuring apparatus according to the present embodiment;
FIG. 2 is a schematic view showing an on-line plate bending angle measuring apparatus according to the present embodiment;
FIG. 3 is an exploded view schematically showing a part of the device of the sheet bending angle on-line measuring device of the present embodiment;
fig. 4 schematically shows a structural diagram of a body, a line laser and a camera of the plate bending angle on-line measuring device of the embodiment;
fig. 5 schematically shows a measurement principle diagram of the plate bending angle on-line measurement device of the present embodiment. The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
1-a camera; 2-a base; a 3-line laser; 4-a transparent protective cover; 5-a slide seat; 6-upper plate; 7-inner frame.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
When the plate is bent, the plate is firstly flatly placed on the V-shaped opening of the lower die of the machine tool, when the machine tool starts to operate, the upper die is fed downwards and gradually contacts with the plate, the plate is stressed to deform, the outer surface of the back of the plate and the outer surface of the lower die form an obtuse angle, and the bending angle of the plate is further calculated by measuring the obtuse angle.
The utility model provides a panel angle of bending on-line measuring device includes two sets of sensor devices and host computer, and two sets of sensors are located the back of bending panel respectively and are located the both sides that bear the lower mould of waiting to bend panel mutually back on the back respectively, and every group sensor includes line laser 3, two cameras 1, body and slide rail, as shown in fig. 1 ~ 4.
As shown in fig. 5, the line laser 3 irradiates the back of the bending plate, part of the laser in the line laser emitted by the line laser 3 is perpendicular to the plane of the plate, and part of the laser is perpendicular to the surface of the lower mold.
The two cameras 1 are arranged on two sides of the line laser 3, are preferably symmetrically arranged, and are used for acquiring images of the back of the plate and the surface of the lower die so that an upper computer can reconstruct a three-dimensional image; in this embodiment, the camera is preferably a large-constant-velocity-star-series USB3.0 digital video camera or a similar product.
The camera 1 and the line laser 3 are arranged in the body;
as shown in fig. 3, the body includes an inner frame 7 and a base 2, the line laser 3 and the two cameras 1 are located in the inner frame 7, the base 2 is U-shaped, arc-shaped slots are formed in two side plates of the U-shaped, protrusions are arranged at two ends of the inner frame, the protrusions are slidably arranged in the arc-shaped slots, fixing caps are movably arranged on the protrusions, and the fixing caps are used for fixing the inner frame at positions of the arc-shaped slots. The inner frame 7 can also be connected with the base 2 through an upper plate 6, and the bulges are arranged at two ends of the upper plate 6. Preferably, the protrusion and the fixing cap may be replaced with a bolt and a nut.
The central angle of the arc-shaped slot is 30-90 degrees, and more preferably 60 degrees.
As shown in fig. 2, the body further comprises a transparent protective cover 4, and the transparent protective cover 4 is covered on the periphery of the inner frame 7.
The sliding rail is parallel to the direction of the plate in the bending process of the plate, the body is arranged on the sliding rail in a sliding mode, the length direction of the body is parallel to the sliding rail, so that the linear laser emitted by the linear laser is emitted to the back of the plate, and the camera is used for collecting images of the back of the plate and transmitting the images to the upper computer.
The slide rail further comprises a slide seat 5, one end of the slide seat 5 is matched with the slide rail, the other end of the slide seat is fixedly connected with the base 2, the base 2 is moved along the bending direction of the plate, and therefore the full-length measurement is achieved.
And the upper computer is connected with the camera 1, receives the plate back image and processes the plate back image to obtain the bending angle of the plate.
As shown in FIG. 5, the angle γ between the two surfaces of the plate and the lower mold surface can be obtained by the line laser 3 and the camera 11And gamma2If the bending angle theta of the plate is 360 DEG-gamma1-γ2。
The camera and the line laser are fixed on the guide rail mechanism, the guide rail can be installed on the machine tool, before bending operation starts, the sliding block is moved to a proper position and fixed, line laser is shot on the side wall of the lower die of the plate and the machine tool, the laser plane is guaranteed to be perpendicular to the plane of the side wall of the lower die of the plate and the machine tool respectively, and the camera is adjusted to a proper shooting angle.
When the bending operation starts, the industrial camera collects images and transmits the images to the upper computer, the upper computer extracts the central line of the image signal line laser, then the central line corresponding to the left view and the right view of the binocular camera is used for completing the three-dimensional reconstruction of the central line of the laser line, two pieces of central line point cloud data are obtained, the laser plane is respectively perpendicular to the plane of the plate and the plane of the side wall of the lower die of the machine tool, and the included angle of the two central lines is the included angle between the plate and the side wall of the lower die of the machine tool. The utility model discloses can extensively be used for numerical control bender bending plate material measurement of contained angle of bending.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The device for on-line measurement of the bending angle of the plate is characterized by comprising two groups of sensors and an upper computer, wherein the two groups of sensors are respectively positioned at the back of the plate to be bent and at two opposite sides of a lower die bearing the plate to be bent, and the sensors are connected with the upper computer; each set of sensors includes:
a line laser;
the two cameras are arranged on two sides of the line laser;
the camera and the line laser are arranged in the body along the length direction of the body;
the sliding rail is parallel to the bending direction of the plate, the body is arranged on the sliding rail in a sliding mode, the length direction of the body is parallel to the sliding rail, so that the line laser emitted by the line laser is emitted to the back of the plate and the surface of the lower die, and the camera is used for collecting images of the back of the plate and the surface of the lower die and transmitting the images to the upper computer;
the upper computer is used for processing the image from the camera to obtain the bending angle of the plate to be bent.
2. The apparatus of claim 1, wherein a portion of the laser beam emitted from the line laser is perpendicular to the plane of the sheet material, and a portion of the laser beam is perpendicular to the surface of the lower mold.
3. The on-line plate bending angle measuring device according to claim 1, wherein the body comprises an inner frame and a base, the line laser and the two cameras are located in the inner frame, the base is U-shaped, arc-shaped grooves are formed in two side plates of the U-shaped, and protrusions are arranged at two ends of the inner frame and are slidably arranged in the arc-shaped grooves.
4. The device for on-line measurement of the bending angle of the plate according to claim 3, wherein a fixing cap is movably arranged on the protrusion and used for fixing the inner frame at the position of the arc-shaped groove.
5. The apparatus of claim 3, wherein the arc-shaped groove has a central angle of 30 ° to 90 °.
6. The device for on-line measurement of the bending angle of the plate according to claim 3, wherein the slide rail further comprises a slide seat, one end of the slide seat is matched with the slide rail, and the other end of the slide seat is fixedly connected with the base.
7. The device for on-line measurement of the bending angle of the plate according to claim 3, wherein the body further comprises a transparent protective cover, and the transparent protective cover is arranged on the periphery of the inner frame in a covering mode.
8. The device for on-line measurement of the bending angle of the plate according to any one of claims 1 to 7, wherein the two phase machines are symmetrically arranged on two sides of the line laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120520635.XU CN214583091U (en) | 2021-03-12 | 2021-03-12 | Online measuring device for bending angle of plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120520635.XU CN214583091U (en) | 2021-03-12 | 2021-03-12 | Online measuring device for bending angle of plate |
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| CN214583091U true CN214583091U (en) | 2021-11-02 |
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| CN202120520635.XU Active CN214583091U (en) | 2021-03-12 | 2021-03-12 | Online measuring device for bending angle of plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115284001A (en) * | 2022-06-29 | 2022-11-04 | 上海航天精密机械研究所 | Full-process laser processing method for air rudder folding surface skin |
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2021
- 2021-03-12 CN CN202120520635.XU patent/CN214583091U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115284001A (en) * | 2022-06-29 | 2022-11-04 | 上海航天精密机械研究所 | Full-process laser processing method for air rudder folding surface skin |
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