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Sheet metal visual detection acquisition terminal and method

A technology for visual inspection and collection terminals, which is applied in measurement devices, optical testing flaws/defects, instruments, etc., can solve the problems of inability to accurately measure the shape and size of the bottom of the object to be measured, affecting measurement accuracy, and poor shooting effects. Achieve the effect of prolonging the service life, flexible fill light, and simple operation

Active Publication Date: 2021-04-13
四川恒匀通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the sheet metal inspection technology of Yingshi Planar company in the United Kingdom places the workpiece on the workpiece table, and the camera is located above the workpiece, which can quickly and efficiently complete the inspection. However, the imaging effect of the camera will be affected by the installation angle of the camera and the thickness of the workpiece, which will further limit The detection effect, especially when detecting thicker workpieces, the captured image will have more black shadows, and the shape and size of the bottom of the object to be tested cannot be accurately measured, resulting in detection errors. At the same time, the compensation required for each workpiece during measurement The light effects are different, if the same light supplement method is used, it will inevitably lead to poor shooting effects and affect the final measurement accuracy

Method used

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  • Sheet metal visual detection acquisition terminal and method

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Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the present invention includes a sheet metal visual detection acquisition terminal, including a visual capture unit 1, a part measurement platform 2 and a uniform light unit 3, and the visual capture unit 1 includes a box body, a digital camera and a corner nut, and the corner nut is connected to the box body, the digital camera is installed in the box body through the camera base, the box body connected to the digital camera can rotate the position, and the digital camera is facing the parts measurement platform 2; Switches, frames, dodging panels and special lamps, the dosing board is installed in the frame, multiple special lamps and photosensitive sensors are evenly installed on the dosing board, the dosing board is divided into multiple units, each unit is equipped with a shading Each shading plate, multiple special lamps and multiple photosensitive sensors are connected to the controller. The controller compares the light brightness info...

Embodiment 2

[0031] This embodiment is preferably as follows on the basis of Embodiment 1: The area of ​​the shading plate is between 4cm²-8cm². Set the area of ​​the shading plate to a smaller area, and control the closing of the shading plate through the controller to achieve accurate light supplement. The light fill accuracy can reach between 1% and 3%, which can fully meet the needs of various types of parts. light needed.

[0032] A temperature sensor is also connected to the time delay board, and a heat dissipation unit is arranged at the bottom of the sheet metal visual detection and collection terminal 3 of the uniform light unit, and the temperature sensor is connected to the heat dissipation unit. Due to the severe heat generated by the special lamp tube, if it is not dissipated in time, it will easily cause damage to the components. The temperature sensor in this solution can collect the temperature of the uniform light unit and transmit the temperature to the delay board. At th...

Embodiment 3

[0037] The sheet metal visual detection collection method includes the following steps:

[0038] Step A) Connect the computer control switch to an external computer terminal, turn on the terminal, and place the part to be tested on the part measurement platform; Step B) import the CAD graphic file corresponding to the part to be tested on the computer terminal; Step C) the The controller compares the lighting information fed back by the photosensitive sensor with the preset value, and then automatically adjusts the number of open shading plates and special lamps, and then obtains the actual outline of the part through the digital camera; step D) the part to be tested The actual contour drawing of the actual profile is compared with the CAD graphics of the part to be tested; step E) sets the color deviation band, and represents different deviation ranges through different colors; step F) displays the deviation state of the part; step G) generates a test report; step H) Save the...

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Abstract

The invention discloses a sheet metal visual detection and acquisition terminal and method, comprising a visual capture unit, a part measurement platform and a dodging unit; the dodging unit includes a time delay board, a controller, a photosensitive sensor, a computer control switch, a frame, and a dodging board And the special lamp tube, the dodging plate is installed in the frame, and many special lamps and photosensitive sensors are evenly installed on the dodging board. The dodging board is divided into multiple units, and each unit is equipped with a shading plate 1. Multiple special lamps and multiple photosensitive sensors are connected to the controller. The controller compares the light brightness information transmitted by the photosensitive sensors with the preset value, and then automatically adjusts the number of open shading panels and special lamps. Through the above principles, the invention can automatically achieve the best supplementary light effect according to the actual situation, so that the shadow of the part placed on the part detection platform disappears, and the measurement accuracy of the object to be measured is improved. The measurement result of this method is intuitive, eye-catching and clear. The false positive rate is low.

Description

technical field [0001] The invention relates to the field of sheet metal detection, in particular to a sheet metal visual detection acquisition terminal and method. Background technique [0002] Traditional inspection methods in sheet metal manufacturing: Manual measurement methods such as vernier calipers and tape measures cannot guarantee product quality. The first piece of sheet metal parts is particularly important, which directly affects the quality and efficiency of the entire manufacturing process. Therefore, how to improve the quality of the first piece Inspection has become a crucial goal in the sheet metal manufacturing industry. With the advancement of science and the improvement of technology, computer vision imaging technology is becoming more and more mature, and the use of computer vision imaging for size measurement has become the new darling of the entire manufacturing industry, which solves the bottleneck of the inability to accurately and intelligently mea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/95G01N21/01
CPCG01N21/01G01N21/95
Inventor 李方辉
Owner 四川恒匀通科技有限公司
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