Friction welding centering detection method, detection block and detection module

Abstract

The application discloses a friction welding centering detection method, a detection block and a detection module. The friction welding centering detection method comprises the following steps: acquiring position information of a reference position on a first welding block, and establishing an evaluation coordinate system according to the position information; acquiring a distance L1 of a weld of the welding piece relative to an evaluation line of the evaluation coordinate system, wherein the evaluation line is parallel to an extension direction of the weld; acquiring a distance L2 of a center line of a furrow on the welding piece relative to the evaluation line; determining that a difference between the distance L1 and the distance L2 is less than or equal to a set distance; and utilizing the principle that a position of a stirring needle of a stirring head of the friction stir welding is always fixed, indirectly determining a center position of a welding area by measuring the center line of the furrow, and then comparing the center position with a position of the weld measured when the welding area is not welded to obtain a welding deviation, so that the welding piece does not need to be cut, and the detection time of the welding deviation defect is greatly reduced.

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