Sheet material thickness detection tool and method

Abstract

The present invention relates to a sheet material thickness detection tool. The tool comprises a workbench, a guide slot configured to transmit sheet materials and laser displacement sensors, the guide slot and the laser displacement sensors are located on the workbench, there are two laser displacement sensors which are respectively arranged at two sides of the guide slot, the two slot walls of the guide slot are respectively provided with corresponding gaps, the gaps are U-shaped slot structures, the gaps correspond to the laser displacement sensors, the front end of the guide slot is provided with an optoelectronic switch, and the lower of the guide slot is provided with an automatic calibration mechanism. The sheet material thickness detection tool can achieve automatic calibration, does not need frequent manual calibration and saves labor. The present invention further relates to a sheet material thickness detection method.

Description

technical field [0001] The invention relates to a detection tool and a detection method for part thickness, in particular to a plate thickness detection tool and a detection method. Background technique [0002] The measurement of the plate in the prior art, such as Figure 1-Figure 4 As shown, need to use two laser displacement sensors S1 and S2, O 1 and O 2 They are the zero points of the laser displacement sensor S1 and the laser displacement sensor S2 respectively, and the left surface of the part is measured by the laser displacement sensor S1 to O 1 The distance is l 1 , measured by the laser displacement sensor S2 from the right side surface of the part to O 2 The distance is l 2 , O 1 with O 2 The distance is L, then the thickness value of the part is: δ=L–l 1 –l 2 . [0003] The existing plate thickness measuring device comprises a workbench, a laser displacement sensor and a guide groove. The workbench includes a workbench and a pillar. Both the sensor an...

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Problems solved by technology

[0008] The plate thickness measuring device works on the industrial site, the ambient temperature changes greatly throughout the year, the laser displacement sensor has a large temperature drift, the distance between the two sensors will change with the ambient temperature, and the parts themselves have thermal deformation , there is an unstable and uneven water film on the surface of the part. These factors will affect the measurement results of the thickness of the plate. The above-mentioned measuring device does not consider the measurement error caused by the ambient temperature and the water film on the surface of the plate, resulting in inaccurate measurement results;

[0009] The existing plate thickness measuring device is not equipped with an automatic calibration mechanism for wet surface plates, so the errors brought to the measurement system by changes in ambient temperature and plate surface state cannot be eliminated in time and automatically, which affects the performance of the measuring device. precision;

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