CN220419171U - Shot blasting pit coverage rate detection device - Google Patents

Abstract

The utility model discloses a shot blasting pit coverage rate detection device which comprises a transportation trolley, a mechanical arm and a pit standard table which are arranged on the transportation trolley at intervals, a detection assembly, a data acquisition device and a data processor, wherein the detection assembly, the data acquisition device and the data processor are arranged at the output end of the mechanical arm; the mechanical arm can drive the detection assembly to move, the detection assembly comprises a light source, an industrial camera and a laser range finder, the light source, the industrial camera and the laser range finder are arranged at the output end of the mechanical arm at intervals, the light source is used for illuminating the surface of a part, the industrial camera is used for taking pictures, and the laser range finder is used for measuring the distance between the surfaces of the part; the data acquisition device is in communication connection with the industrial camera, and is also in communication connection with the data processor. The coverage rate of the pits can be calculated rapidly and efficiently, the qualification rate of the pits can be calculated rapidly and efficiently, and the detection efficiency and the detection quality of shot blasting pits are improved effectively.

Description

Shot blasting pit coverage rate detection device

Technical Field

The utility model relates to the technical field of mechanical structure surface engineering, in particular to a shot blasting pit coverage rate detection device.

Background

Because of the special application scene of the product, the aircraft part needs to have extremely high fatigue life, and the shot peening process is a processing measure capable of remarkably improving the fatigue life of the part. The shot blasting treatment can introduce a residual compressive stress field into the surface layer of the material, so that the initiation and the expansion of fatigue cracks are effectively inhibited, and the fatigue life of a structural member is prolonged; meanwhile, the shot blasting can change the surface morphology of the part, and the fatigue crack initiation is affected; in addition, the surface topography of the part can also have some effect on corrosion resistance and wear performance. Therefore, only the shot peening process conforming to the standard can fully function, and the shot coverage is one of the important indexes for checking the quality of the process. Where shot coverage is the ratio of the area of the uniform pit produced by the shot striking the original surface to the original surface area, expressed as a percentage or ratio.

According to the method for detecting the shot blasting pit coverage rate in the prior art, the detection efficiency is low, the detection result is unstable, and the obtained shot blasting coverage rate error is larger through visual detection by using a magnifying glass manually; according to the method for detecting the coverage rate of the shot blasting pits, the film coating paste of the film coating seal box is contacted with the surface to be detected of the workpiece and is subjected to standing solidification, a film coating paste model with the shot blasting morphology of the surface to be detected of the workpiece copied by the film coating paste model is obtained after the film coating paste is solidified and shaped, the shot blasting morphology of the surface to be detected of the workpiece copied by the film coating paste model is detected by the magnifying glass, the proportion of the surface area occupied by the shot blasting pits is observed, the detection process is complex, and the detection efficiency is low.

Disclosure of Invention

The utility model aims to provide a shot blast pit coverage rate detection device which is used for solving the problems of inaccurate shot blast coverage rate, complex detection process and low detection efficiency in the shot blast pit coverage rate detection method in the prior art.

To achieve the purpose, the utility model adopts the following technical scheme:

shot blast pit coverage detection apparatus, comprising:

a transport trolley;

the mechanical arm and the pit standard table are arranged on the transport trolley at intervals, and a plurality of standard pits with different sizes are arranged on the pit standard table at intervals;

the detection assembly is arranged at the output end of the mechanical arm, the mechanical arm can drive the detection assembly to move, the detection assembly comprises a light source, an industrial camera and a laser range finder, the light source, the industrial camera and the laser range finder are arranged at the output end of the mechanical arm at intervals, the light source is used for illuminating the surface of a part, the industrial camera is used for taking pictures, and the laser range finder is used for measuring the distance between the surfaces of the part;

the data acquisition device is in communication connection with the industrial camera and is also in communication connection with the data processor.

Preferably, the light beam of the laser range finder is distributed at an acute angle with the central axis of the probe of the industrial camera.

Preferably, along the height direction of the transportation trolley, the laser emission head of the laser range finder and the probe of the industrial camera are positioned at the same height position.

Preferably, the central axis of the light source and the central axis of the probe of the industrial camera are collinear, and the light source is far away from the transportation trolley relative to the industrial camera along the height direction of the transportation trolley.

Preferably, the shot blasting pit coverage rate detection device further comprises a controller, wherein the controller is in communication connection with the data collector, the data processor, the transportation trolley, the mechanical arm, the light source, the industrial camera and the laser range finder.

Preferably, the shot blasting crater coverage rate detection device further comprises an electronic display screen, and the electronic display screen is in communication connection with the controller.

Preferably, the output end of the mechanical arm is detachably connected with a base, the light source is detachably connected with the base, the base is detachably connected with a first supporting seat and a second supporting seat, the industrial camera is detachably connected with the first supporting seat, and the laser range finder is detachably connected with the second supporting seat.

Preferably, the pit standard table is connected to the upper end face of the transportation trolley through threads.

Preferably, a buckle is arranged on the bottom wall of the pit standard table, a clamping groove is formed in the upper end face of the transport trolley, and the buckle is in clamping connection with the clamping groove.

Preferably, the mechanical arm is a six-axis mechanical arm.

The utility model has the beneficial effects that:

the utility model aims to provide a shot blast pit coverage rate detection device, which comprises a transportation trolley, a mechanical arm, a pit standard table, a detection component, a data collector and a data processor, wherein before the pit coverage rate of the surface of a part is detected, the mechanical arm and the detection component arranged at the output end of the mechanical arm are driven by the transportation trolley to run to the vicinity of the part, a light source, an industrial camera and a laser range finder are started, the detection component is driven by the mechanical arm to move, the distance from the industrial camera to the surface of the pit standard table is measured by the laser range finder, so that the distance from the industrial camera to the standard pit is obtained, when the distance from the industrial camera to the surface of the pit standard table reaches a set value, the corresponding standard pit on the pit standard table is shot by the industrial camera and uploaded to the data collector, then the data collector is uploaded to the data processor, the distance between the industrial camera and the surface of the part is adjusted according to the set value, the detection component is adjusted to be positioned right above the part surface, the light source shines the part, the part surface is understandably, the part surface has a color ring area, the surface is roughly in a black shadow area, the area is formed, the surface area is not in a shadow area is formed, the area is obviously, the data is not compared with the surface area is formed by the image of the pit, and the data is obviously no contrast area is formed by the surface area of the pit, and the data is compared with the surface area of the surface of the pit is formed by the surface of the pit, and the surface is obviously no contrast area is compared with the surface area of the surface area and has the surface area is processed, and the qualification rate of the pit can be calculated rapidly and efficiently. Therefore, the detection efficiency and the detection quality of the shot blasting pits are effectively improved.

Drawings

FIG. 1 is a schematic diagram of a shot blast pit coverage detecting device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a part of a shot blast pit coverage detecting device according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a part of a shot blast pit coverage detecting device according to an embodiment of the present utility model.

In the figure:

100. a part;

1. a transport trolley;

2. a mechanical arm;

3. a standard pit table;

4. a detection assembly; 41. a light source; 42. an industrial camera; 43. a laser range finder;

51. a base; 52. a first support base; 53. and a second supporting seat.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The utility model provides a shot blasting pit coverage rate detection device, which is shown in figures 1-3, and comprises a transportation trolley 1, a mechanical arm 2 and a pit standard table 3 which are arranged on the transportation trolley 1 at intervals, a detection assembly 4, a data collector and a data processor, wherein the detection assembly 4 is arranged at the output end of the mechanical arm 2, and a plurality of standard pits with different sizes are arranged on the pit standard table 3 at intervals; the mechanical arm 2 can drive the detection assembly 4 to move, the detection assembly 4 comprises a light source 41, an industrial camera 42 and a laser range finder 43 which are arranged at the output end of the mechanical arm 2 at intervals, the light source 41 is used for illuminating the surface of the part 100, the industrial camera 42 is used for taking pictures, and the laser range finder 43 is used for measuring the distance between the surfaces of the part 100; the data collector is communicatively coupled to the industrial camera 42, and the data collector is also communicatively coupled to the data processor.

As shown in fig. 1-3, before detecting the pit coverage rate of the surface of the part 100, the mechanical arm 2 and the detection component 4 arranged at the output end of the mechanical arm 2 are driven by the transportation trolley 1 to move to the vicinity of the part 100, the light source 41, the industrial camera 42 and the laser range finder 43 are turned on, the detection component 4 is driven by the mechanical arm 2 to move, the distance from the industrial camera 42 to the standard pit is measured by the laser range finder 43, thus the distance from the industrial camera 42 to the standard pit is obtained, when the distance from the industrial camera 42 to the pit standard table 3 reaches a set value, the corresponding standard pit on the pit standard table 3 is shot by the industrial camera 42 and uploaded to the data collector, then the data collector is uploaded to the data processor, then the mechanical arm 2 drives the detection component 4 to move, the distance between the industrial camera 42 and the surface of the part 100 is adjusted according to the set value, the detection component 4 is positioned right above the surface of the part 100, the light source 41 is polished towards the surface of the part 100, it can be understood that the area of the part 100 is in a black-color shade shape, the area of the pit on the surface of the part 100 is in the state, when the distance from the industrial camera 42 to the surface of the pit is reached to the standard table 3, the corresponding standard pit on the surface of the part 100 can not reach the set value, the corresponding standard pit on the surface can be formed, the surface of the corresponding pit can not be compared with the surface of the part, the image can be formed, and the image can be compared with the image on the surface of the part can be formed, and the surface can be compared, and the image can be processed, and the image can be compared, and the image on the surface can and the surface can be compared with the surface and the surface can not reach the surface. Therefore, the detection efficiency and the detection quality of the shot blasting pits are effectively improved.

As shown in fig. 2, the light beam of the laser range finder 43 is distributed at an acute angle to the central axis of the probe of the industrial camera 42. It will be appreciated that a triangle is formed between the laser rangefinder 43, the probe of the industrial camera 42 and any point on the surface of the part 100, by setting a first distance between the laser rangefinder 43 and the industrial camera 42, measuring a second distance between any point on the surface of the part 100 by the laser rangefinder 43, calculating a distance from the probe of the industrial camera 42 to the surface of the part 100 according to the first distance and the second distance, and adjusting a distance from the industrial camera 42 to the surface of the part 100 by the mechanical arm 2 according to the set value.

Preferably, as shown in fig. 2, the laser emitting head of the laser range finder 43 is located at the same height position as the probe of the industrial camera 42 in the height direction of the transportation cart 1. By the arrangement, a right triangle is formed among the laser emitting head of the laser range finder 43, the probe of the industrial camera 42 and any point on the surface of the part 100, so that the distance between the probe of the industrial camera 42 and the surface of the part 100 can be calculated conveniently.

Wherein, as shown in fig. 2, the central axis of the light source 41 and the central axis of the probe of the industrial camera 42 are collinear, and the light source 41 is far away from the transportation trolley 1 relative to the industrial camera 42 along the height direction of the transportation trolley 1. The arrangement ensures that the area with the pits and the area without the pits on the surface of the part 100 can form obvious light-dark contrast, and can further improve the detection precision of the pit coverage rate and the detection precision of the qualification rate of the pits.

The shot blasting pit coverage rate detection device further comprises a controller, and the controller is in communication connection with the data acquisition device, the data processor, the transport trolley 1, the mechanical arm 2, the light source 41, the industrial camera 42 and the laser range finder 43. The controller can carry out information interaction with the data collector and the data processor, and the controller can control the operation of the transportation trolley 1, control the movement of the mechanical arm 2, control the on or off of the light source 41, and control the on, off and photographing of the industrial camera 42.

Specifically, the shot blasting pit coverage rate detection device further comprises an electronic display screen, and the electronic display screen is in communication connection with the controller. The arrangement is such that the electronic display screen is capable of displaying pictures taken by the industrial camera 42 and processed by the data processor.

More specifically, in this embodiment, the data collector, the data processor, the controller and the electronic display are an integrated computer, and the industrial camera 42 is communicatively connected to the computer, and the computer is capable of receiving, processing and displaying pictures taken by the industrial camera 42.

As shown in fig. 1 and 3, the output end of the mechanical arm 2 is detachably connected with a base 51, the light source 41 is detachably connected with the base 51, the base 51 is further detachably connected with a first support seat 52 and a second support seat 53, the industrial camera 42 is detachably connected with the first support seat 52, and the laser range finder 43 is detachably connected with the second support seat 53. The light source 41 is detachably connected to the base 51, the industrial camera 42 is detachably connected to the first supporting seat 52, the laser range finder 43 is detachably connected to the second supporting seat 53, and the light source 41, the industrial camera 42 and the laser range finder 43 are convenient to assemble, disassemble and maintain. Specifically, in the present embodiment, the light source 41 is screwed to the base 51, the industrial camera 42 is screwed to the first support 52, and the laser rangefinder 43 is screwed to the second support 53.

Wherein, the pit standard platform 3 is connected with the upper end face of the transportation trolley 1 in a threaded manner. Because the corresponding sizes of the pits are different when the part 100 is made of different materials, a plurality of pit standard tables 3 are manufactured according to the different materials, and the pit standard tables 3 are arranged to be in threaded connection with the upper end face of the transportation trolley 1, so that the pit standard tables 3 can be replaced conveniently. As an alternative, the bottom wall of the pit standard table 3 is provided with a buckle, the upper end surface of the transport trolley 1 is provided with a clamping groove, and the buckle is clamped with the clamping groove. So arranged, the pit standard table 3 is also convenient to assemble and disassemble.

Specifically, in the present embodiment, the robot arm 2 is a six-axis robot arm. So set up, be convenient for the arm 2 to adjust the detection component 4 to directly over the part 100. The specific structure of the six-axis mechanical arm belongs to the prior art, and is not described herein.

In this embodiment, the process of data processing by a computer is divided into three steps.

The first step: and (5) binarizing the image. Image binarization refers to converting a captured picture into a binary image containing only black and white. Secondly, because the brightness of the collected pictures is different, and the brightness of each region in the picture is different due to the mutual influence of the ambient light and the light source 41 in the same picture, the binarization threshold value cannot use a fixed value in the process of carrying out image binarization, a zoned dynamic binarization threshold algorithm is used, and the binarization threshold value of each region is obtained after statistical processing by counting the pixel brightness distribution of the whole picture, so that the picture with the optimal binarization effect is obtained.

And a second step of: and (5) processing an image connected domain. The connected domain processing is carried out on the binarized image, so that highlight areas in pits in the image can be removed, and each pit is in a full black state; second, black spots due to rust spots, scraps, or the like on the surface of the component 100 can be removed.

And a third step of: counting the number of pixels of a black area in the picture, obtaining the area of the black area according to the number of pixels of the black area in the picture, and calculating to obtain the accurate pit coverage rate according to the ratio of the area of the black area to the area of the surface of the part 100; the shot standard pit area and the actual pit area are compared, and the accurate pit qualification rate can be calculated and obtained.

By means of the shot blasting pit coverage rate detection device, accurate pit coverage rate and accurate pit qualification rate can be obtained in real time, the processing of the part 100 can be effectively assisted, and relevant parameters of the processed part 100 can be adjusted in real time according to the pit coverage rate and the pit qualification rate.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Shot blast pit coverage detection device, its characterized in that includes:

a transport trolley (1);

the mechanical arm (2) and the pit standard table (3) are arranged on the transport trolley (1) at intervals, and a plurality of standard pits with different sizes are arranged on the pit standard table (3) at intervals;

the detection assembly (4) is arranged at the output end of the mechanical arm (2), the mechanical arm (2) can drive the detection assembly (4) to move, the detection assembly (4) comprises a light source (41), an industrial camera (42) and a laser range finder (43) which are arranged at intervals at the output end of the mechanical arm (2), the light source (41) is used for illuminating the surface of the part (100), the industrial camera (42) is used for taking pictures, and the laser range finder (43) is used for measuring the distance between the surfaces of the part (100);

the data acquisition device is in communication connection with the industrial camera (42), and the data acquisition device is also in communication connection with the data processor.

2. The shot blast pit coverage detection apparatus as set forth in claim 1, wherein the beam of the laser rangefinder (43) is disposed at an acute angle to the central axis of the probe of the industrial camera (42).

3. The shot blast pit coverage detecting apparatus according to claim 2, wherein the laser emitting head of the laser range finder (43) is located at the same height position as the probe of the industrial camera (42) in the height direction of the transportation cart (1).

4. The shot blast pit coverage detection apparatus according to claim 1, wherein a central axis of the light source (41) and a central axis of a probe of the industrial camera (42) are collinear, and the light source (41) is distant from the transportation cart (1) with respect to the industrial camera (42) in a height direction of the transportation cart (1).

5. The shot blast pit coverage detection apparatus according to claim 1, further comprising a controller communicatively connected to the data collector, the data processor, the transportation cart (1), the robotic arm (2), the light source (41), the industrial camera (42) and the laser rangefinder (43).

6. The shot blast pit coverage detection apparatus of claim 5, further comprising an electronic display screen communicatively coupled to the controller.

7. The shot blast pit coverage rate detection apparatus according to any one of claims 1 to 6, wherein the output end of the mechanical arm (2) is detachably connected with a base (51), the light source (41) is detachably connected with the base (51), the base (51) is further detachably connected with a first supporting seat (52) and a second supporting seat (53), the industrial camera (42) is detachably connected with the first supporting seat (52), and the laser range finder (43) is detachably connected with the second supporting seat (53).

8. The shot blast pit coverage detection apparatus according to any one of claims 1 to 6, wherein the pit stand (3) is screw-connected to an upper end face of the transportation cart (1).

9. The shot blast pit coverage rate detection apparatus according to any one of claims 1 to 6, wherein a bottom wall of the pit standard table (3) is provided with a buckle, an upper end surface of the transportation trolley (1) is provided with a clamping groove, and the buckle is clamped with the clamping groove.

10. The shot blast pit coverage detection apparatus according to any one of claims 1 to 6, wherein the robot arm (2) is a six-axis robot arm.