Mobile digital pallet and its measuring method for measuring vehicle body contour deviation

Abstract

The invention provides a movable type digital clamping plate for measuring outline deviation of a vehicle body and a measuring method of the movable type digital clamping plate; the movable type digital clamping plate is characterized by comprising a substrate, a supporting mechanism, a limiting mechanism, a displacement sensor, visual sensors, and a controller, wherein the substrate is arranged on the surface of the tested vehicle body through the supporting mechanism and the limiting mechanism in a stretching over mode; the supporting mechanism is used for supporting and positioning the substrate; the limiting mechanism is used for limiting the relative position of the substrate and the tested vehicle body; the displacement sensor is used for measuring a preset measuring point of the tested vehicle body; the visual sensors are arranged at the left end and the right end inside the substrate, and are used for measuring the edges of the two sides of the tested vehicle body; the controller is arranged on the upper surface of the substrate and is connected with the displacement sensor and the visual sensors and is used for receiving and processing data obtained by the displacement sensor and the visual sensors. Automatic, high-precision, high speed, digitization, networking and other demands in measurement of the outline deviation of the vehicle body in the train production process can be met.

Description

technical field [0001] The invention relates to the technical field of train body contour measurement, in particular to a mobile digital pallet for measuring the contour deviation of a train body and a measuring 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 ...

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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