To assess the capability of cigarette’s physical index testing system accurately and systematically and make up the deficiency of traditional univariate measurement system, the physical index testing system was regarded as a multivariate one and assessed by a method which combined a two-phase method with a modified-region-based method. In the first phase of the two-phase method, the variation of measurement system was estimated with calibrated test rods; in the second phase, the total variation of measurement system was estimated through the historical measurement data of the same measurement equipment. The capability of the measurement system was assessed comprehensively by the modified-region-based method. Two important assessment indices, percentages of repeatability and reproducibility(%R&R)and ratio of precision to tolerance (%P/T), and their meaning were given. Also given were the formulas for calculating percentage of equipment variation (%EV) and percentage of appraiser variation (%AV) for equipment setting. The results showed that:1) The created indexes %R&R and %P/T were 16.49% and 12.92% for the testing system, respectively; all in the range of 10%-30%, which indicated that the system had enough measurement capability and higher measurement precision. 2) Multivariate measurement system analysis method took the correlation between cigarette’s physical indices into account, featured high accuracy and integrity, and was suitable for analyzing the capability of cigarette testing stations of different types.
针对目前工厂中工人手工穿珠生产效率低的实际问题,本研究拟设计开发一种自动进料、自动穿孔、自动截取金属条的数控自动穿珠机装备,以满足工厂提升工作效率的需求,降低长期人工成本的投入.论文针对自动进料装置,光敏传感器选料系统,机械手穿珠装置,单片机等方面进行了开发设计.最终,通过以上各部分的系统集成来完成整个自动穿珠过程.