A method for detecting the surface quality of automobile body outer covering parts

Abstract

The invention discloses a method for detecting surface quality of outer cover parts of an automotive body. The method comprises the following steps: dividing evaluation regions, classifying defects, and visualizing whether the outer cover parts of the automotive body have the defects such as cracking, necking, wrinkling, dezincification, burrs, insufficient rigidity, unsmooth R, invisible injuries, bruising, scratching, shock lines, sliding lines or convex-concave points or not. According to the detection method, the quality defects can be sub-classified, the detected subjective assessment results can be converted into objective indexes and the repair time of parts is reduced.

Description

technical field [0001] The invention belongs to the field of quality detection of automobile stamping parts, and in particular relates to a method for detecting the surface quality of an outer cover of an automobile body. Background technique [0002] The appearance quality of automobiles is an intuitive "perceived quality". In other words, it is the appearance quality of products that consumers can perceive through vision, touch, smell and hearing. Good or bad directly affects consumers' consumption decisions, which has an important impact on car quality. [0003] Such as figure 1 As shown, the traditional detection method of the surface quality of the outer cover of the automobile body is relatively simple. It uses visual inspection for cracks, necking, burrs, etc., hand touch for invisible damage, and then uses oil stone or sand table to polish the convex and concave points on the surface. The method is to use experience to judge whether there is a defect in the surface...

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Problems solved by technology

[0003] like figure 1 As shown, the traditional detection method of the surface quality of the outer cover of the automobile body is relatively simple. It uses visual inspection for cracks, necking, burrs, etc., hand touch for invisible damage, and then uses oil stone or sand table to polish the convex and concave points on the surface. The method is to use experience to judge whether there is a defect in the surface quality of the outer body panel (corresponding to whether it is qualified or not). This method is a subjective evaluation and judgment, and the conclusions drawn are often different due to different judges, resulting in long quality inspection time. It cannot accurately reflect whether the defect disappears after painting, and it will also increase the workload of repairing the outer body panels

[0004] CN102507594A discloses a surface quality detection device and method for automobile body panels, which can achieve the inspection effect of a professional AUDIT review room for vehicle body panels, but it has not carried out detailed classification of defects, and still cannot convert the detection results into Objective indicators, when the surface of the body panel needs to be repaired due to defects, cannot provide accurate repair basis, and will also increase the workload of repair

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