CN205765611U - A kind of train vehicle body spray paint before automatization's polishing system vehicle body smooth detection device - Google Patents

Abstract

The utility model relates to a vehicle body leveling detection device for an automatic grinding system before painting a train body, which comprises three main parts: a vehicle body detection door, a detection door track and three laser scanning sensors with the same specifications. The unevenness on the surface of the body to be polished is clearly visible after the putty powder is scraped and applied. If the body level test is not carried out, the subsequent grinding process may cause the unevenness of the body to become more obvious, and the polishing effect will be poor, requiring rework . The main advantage of the car body leveling detection device is to quickly scan the body through the sensor installed on the detection door, analyze the concave and convex marks on the body surface according to the scanning detection results, and then control the grinding robot to make it smooth, so that not only It can improve the grinding efficiency of the grinding robot and the grinding quality of the entire car body, and the painted car body is beautiful and generous without unevenness.

Description

A car body flatness detection device for an automatic grinding system before painting a train body

technical field

The utility model relates to the technical field of automatic grinding before painting of a train body, in particular to a vehicle body flatness detection device for an automatic grinding system before painting a train body.

Background technique

In recent years, with the development of the economy and the innovation of technology, the automatic grinding technology of robots has been widely used in the production of factories and enterprises. Due to the huge size of the train body, the incomplete surface and high flatness requirements, the domestic work of grinding the train body The mode is still limited to the manual grinding of the assembly line. At present, the automatic grinding of robots is slowly embedded. Manual grinding has great disadvantages in the process of grinding materials. First, dust and noise will have a great impact on the physical and mental health of employees. Secondly, manual grinding greatly reduces the efficiency of grinding and prolongs the time of grinding. That is, there are many defects in the artificially polished materials, which will affect the further processing of the materials, and these defects will also affect the actual performance of the entire product. Therefore, these disadvantages have greatly reduced the production efficiency and production cost of factories and enterprises, and the application of robot automatic grinding technology can well solve the above problems. The train body is welded by many sheets. After welding, there are many welding spots between the welds, and the surface of the body is also uneven. In order to improve the unevenness of the body surface, putty will be scraped on the body before painting. pink. Although scraping and applying putty powder can improve the dents on the surface of the car body, the flatness of the car body is still not optimistic for the car body with a large plane, which will affect the subsequent robot body polishing operation. Because the position of the manipulator of the grinding robot and the grinding path are all preset, no matter how flat the surface of the vehicle body is to be polished, the grinding robot will grind according to the set grinding intensity. For the uneven surface of the car body, or the place where there are solder joints, the grinding robot will grind with this force, which will cause the solder joints that need to be polished to not be polished, and the parts with convex marks on the car body will not be polished. There is little or no sanding where the putty powder has been applied, resulting in a rougher surface than the rest of the surface. Therefore, after the putty powder is scraped and applied on the train body, it is necessary to carry out the level detection of the body surface. The purpose of the level detection of the polished body is to improve the macroscopic concave-convex height of the measured plane compared with the ideal plane after the body is polished by the grinding robot, that is, Make the polished car body flat without uneven height difference. After the flatness detection of the entire body surface, the detected and analyzed data will control the manipulator of the grinding robot through the terminal, and the grinding robot will grind less on places with small values and more on places with large values according to the data results, and finally make the entire body The grinding value returns to a balance line, which can not only improve the grinding efficiency of the grinding robot and the grinding quality of the entire body, but also provide good conditions for the painting of the body after grinding.

Contents of the invention

In order to ensure the automatic grinding effect of the train body robot, the utility model provides a vehicle body flatness detection device for an automatic grinding system before painting the train body. By testing the flatness of the entire body surface of the train body, the robot grinding deviation caused by the unevenness of the body surface is fundamentally solved, and it provides good conditions for the painting operation after the entire body is polished.

A car body flatness detection device for an automatic polishing system before painting a train body, which is characterized in that it includes two main parts: a car body detection door and a two-dimensional laser scanning sensor.

Description of drawings

Fig. 1 is a schematic perspective view of a vehicle body level detection device of the present invention;

Fig. 2 is a schematic perspective view of the vehicle body level detection device of the present invention;

Fig. 3 is a schematic principle diagram of scanning a vehicle body by a two-dimensional laser scanning sensor of the present invention.

Grinding robot track 1, grinding work surface 2, train body 3, train track 4, two-dimensional laser scanning sensors 5, 6 and 7, body detection door 8, detection door tracks 9 and 10, trailer 11, semiconductor laser generator 12, Lens 13, scanning contour line 14, mirror 15, two-dimensional CMOS array 16, signal processor 17, signal output terminal 18

detailed description

Now describe in detail the implementation of the utility model structure in conjunction with the accompanying drawings:

A car body flatness detection device for an automatic grinding system before painting a train body, characterized in that it includes three main parts: a car body detection door, a detection door track, and three laser scanning sensors with the same specifications. Two of the two-dimensional laser scanning sensors 5, 6 and 7 are installed on the inner side of the two sides of the vehicle body detection door in a state of mutual symmetry, and the last one is installed on the upper inner side of the vehicle body detection door, that is, it is installed at the most middle position of the vehicle body detection door. (The number of sensors arranged depends on the scanning accuracy). Due to the huge size of the train body, generally point-type laser sensor scanning is time-consuming and laborious. The two-dimensional laser scanning sensor selected here is based on the principle of optical triangulation to scan the body. Its most important feature It has a large scanning range, no need for a controller, direct network port output (analog output is also optional), scanning measurement is not affected by color, surface material or discrete light, and the two-dimensional laser scanning sensor has a synchronous input terminal, which can be used Multiple sensors work synchronously. When the two-dimensional laser scanning sensors 5, 6 and 7 carried out the vehicle body scanning operation, the semiconductor laser generator 12 sent light, formed a plane light curtain through the lens 13, and formed a contour line 14 on the train body 3 simultaneously (the contour line length is the sensor scanning range), the light is projected onto the two-dimensional CMOS array 16 through the reflection of the train body, and the cross-sectional figure of the train body 3 formed in this way will be transmitted from the signal output terminal 18 after being analyzed and processed by the signal processor 17.

The vehicle body detection door 8 is installed on the vehicle body detection track to install the sensor. The two sides and the top are straight, and the two corners are in a smooth bending state. The size of the vehicle body detection door 8 is based on the scanning surface of the three laser scanning sensors. Depending on the scope, when the train body 3 passes through the body detection door 8, it can ensure that the scanning covers the entire train body 3, and its section width can ensure the installation of the sensor. First, the train body 3 arrives at the grinding worktable 2 via the train track 4 along with the trailer 11. After the body posture is adjusted, the body detection door 8 moves at a constant speed along the detection door tracks 9 and 10, and the detection door tracks 9 and 10 are installed on the two tracks of the grinding robot. The inner side is the working path of the vehicle body detection door 8. When the vehicle body detection door 8 is aligned with the front end of the train body 3, the two-dimensional laser scanning sensors 5, 6 and 7 start to scan the vehicle body to detect the operation direction. When the rear end of the vehicle body 3 is aligned, the two-dimensional laser scanning sensors 5, 6 and 7 stop the scanning detection operation of the vehicle body, and finally the detection door 8 resets. By scanning and detecting the outline of the train body 3, the plane difference of the entire body can be quickly measured, and the measured data is analyzed and processed to output a control signal, and then the grinding robot installed on the grinding robot track 1 starts the grinding operation.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, those who make several equivalent substitutions or obvious modifications without departing from the concept of the utility model, and have the same performance or use, shall be deemed to belong to the submitted utility model. The scope of protection determined by the claims.

Claims (3)

1. A car body smoothing detection device of an automatic polishing system before painting a train body, characterized in that: it includes three main parts of a car body detection door, a detection door track and three laser scanning sensors with the same specifications; wherein, the vehicle body detection door, Installed on the vehicle body detection track to install the sensor and drive the sensor to scan and detect the flatness of the entire train body; the detection door track is installed on the inner side of the two tracks of the grinding robot, which is the working path of the body detection door; three lasers with the same specifications Two of the scanning sensors are installed on the inner side of both sides of the vehicle body detection door in a state of mutual symmetry, and the last one is installed on the upper inner side of the vehicle body detection door, that is, it is installed at the middlemost position of the vehicle body detection door. 2. The vehicle body flatness detection device of an automatic polishing system for a train body before painting according to claim 1, characterized in that, both sides and the top of the vehicle body detection door are straight, and the two corners are in a smooth bending state, The size of the body detection door is determined by the scanning range of the three laser scanning sensors. When the body passes through the body detection door, it can ensure that the scanning covers the entire body, and its section width can ensure the installation of the sensor. 3 . The vehicle body smoothness detection device of an automatic grinding system for a train body before painting according to claim 1 , wherein the laser scanning sensor is a two-dimensional laser scanning sensor. 4 .