Digital card board with positioning compensation function and its measuring method

Abstract

The invention provides a digital card board with a positioning compensation function and a measuring method of the digital card board. The digital card board comprises a substrate, a positioning mechanism, displacement sensors, vision sensors and a controller; the substrate straddles the surface of a tested vehicle body through the positioning mechanism; the positioning mechanism is located belowthe substrate and is used for supporting the substrate and defining the relative positions of the substrate and the tested vehicle body; the displacement sensors are mounted inside the substrate, arevertical to a surface where preset measurement points of the tested vehicle body are located, and are used for measuring the preset measurement points of the tested vehicle body; the vision sensors are located at two sides of the substrate and are used for measuring the edges of the two sides of the tested vehicle body; and the controller is installed in the substrate, is electrically connected with the displacement sensors and the vision sensors and is used for receiving and processing data measured by the displacement sensors and the vision sensors. The digital card board of the invention has high positioning precision and high measuring speed. With the digital card board adopted, the contour deviation of the vehicle body can be measured in real time at a production site.

Description

technical field [0001] The invention relates to the technical field of train body profile measurement, in particular to a digitized pallet with a positioning compensation function and a measurement method thereof. Background technique [0002] In the manufacturing process of train carriages, it is necessary to carry out on-line detection of the roof, side walls and other components of the carriage body in order to obtain accurate shape parameters. [0003] At present, the car body contour detection method used in the train production site generally uses a metal pallet as a template, and uses a ruler to manually measure the gap between the car body and the pallet to obtain shape deviation information. This detection method has low measurement accuracy, low efficiency, and poor reliability, and the relevant data of the production process cannot be automatically saved, product quality cannot be traced, and it cannot meet the needs of modern production. Aiming at this problem, ...

AI Technical Summary

Problems solved by technology

However, the deviation measurement method is a relative measurement method. The positioning accuracy between the digital pallet and the car body under test directly affects the contour measurement accuracy, and the positioning accuracy of the pallet at the production site is often not guaranteed, so the actual measurement accuracy Low

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