汽车外观是消费者在选车时留下的第一印象,因此,整车外观质量的好坏直接影响了消费者的购买心理。这就对汽车外覆盖件的表面质量提出了更高的要求,同时也给生产带来了一定的难度。影响外覆盖件表面质量的因素很多,控制起来难度较大,如果出现质量问题,轻者造成制件批量返修,严重时会导致整批零件报废,不但消耗了过多的工时,还影响了生产效率,造成大量的人力、物力的浪费。在生产过程中,外覆盖件质量缺陷主要反映为:坑包、压痕、拉伤、缩颈、褶皱、开裂等等。在这些缺陷中,除了坑包之外,其余 Automotive appearance is the first impression left by consumers in the election car, therefore, the quality of the vehicle’s appearance directly affects the consumer’s buying psychology. This puts a higher requirement on the surface quality of the outer covering of the automobile, and also brings a certain degree of difficulty to the production. Affect the surface quality of the outer cover a lot of factors, the control is more difficult, if there is quality problems, the light caused parts batch rework, serious parts will result in scrapped parts, not only expended excessive working hours, but also affected the production Efficiency, resulting in a lot of manpower, material waste. In the production process, the quality defects of the outer cover are mainly reflected as: kits, indentations, straining, necking, wrinkles, cracking and the like. Among these defects, except for pit kits, the rest