Measuring method for curved surface part, measuring device, equipment and storage medium

Abstract

The embodiment of the invention discloses a measuring method for a curved surface part, a measuring device for a curved surface part, equipment and storage medium. The method comprises the following steps that: a first axial direction is determined according to the contact point of the curved surface part and a measurement platform; a second axial direction and a coordinate origin are determined according to the third plane and fourth plane of the measured curved surface part; a part coordinate system is established according to the first axial direction, the second axial direction and the coordinate origin; the dimension parameters of the curved surface part which are measured in the part coordinate system are obtained, and are stored as coordinate data in a vehicle coordinate system. With the measuring method provided by the technical schemes of the invention adopted, the problem that the measurement of parts with characteristic elements such as planes and round holes which are largeenough needs multiple iterations in the prior art is solved, and the measurement accuracy of irregular curved surface parts is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of parts measurement, and in particular, to a method, device, equipment and storage medium for measuring curved surface parts. Background technique [0002] There is an irregular thin-walled surface part among the parts that make up the vehicle sunroof, figure 1 It is a structural schematic diagram of an irregular curved surface part of a vehicle sunroof in the prior art, such as figure 1 As shown, the surface part has no characteristic elements such as large planes and round holes used to construct the measurement coordinate system. [0003] For parts that do not have feature elements such as large enough planes and round holes, the three-coordinate measurement method is generally used. In three-coordinate measurement, regardless of whether the three-dimensional digital model is used or not, coordinate system alignment is an important part of three-coordinate measurement. Effecti...

AI Technical Summary

Problems solved by technology

However, the three-coordinate measurement method is affected by the surface shape error of the part, and multiple iterations are required if necessary, resulting in low accuracy of the detection results

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