数字轮是车速里程表上的记数零件,由塑料注射成型。工作时不仅要求转动灵活、准确,同时要求外表美观。这样不仅要求注射出来的零件符合要求,同时要求白底加工和印字时都不影响这些性能。但在喷漆工艺未改进前白底加工所采用的喷漆方法,漆粒喷到数字轮两端和齿形上,数字轮在运转过程中产生发卡现象,对表的质量有一定的影响。 The digital wheel is a metered part of the speedometer that is injection molded from plastic. Work requires not only flexible rotation, accurate, at the same time require a beautiful appearance. This not only requires the injection of the parts meet the requirements, while the white processing and printing requirements do not affect these properties. However, before the painting process has not been improved, the painting method used on the white background processing is that the paint particles are sprayed onto both ends of the figure wheel and the tooth shape, and the digital wheel has a hairpin phenomenon during the operation, which has some influence on the quality of the watch.