Research on Improvement of Direct Labor Efficiency in SA Company

SA企业是厦门一家生产不间断电源UPS和精密空调的工厂。随着国内工人工资的不断上涨，加上和兄弟工厂制造成本的竞争日益激烈，提高直接人工效率，降低人工成本和制造费用，从而降低总制造成本，提升企业的竞争力。提高直接人工效率成为了SA企业可持续发展的必要。 本文以精益生产方式和KPI考核方法为理论基础，通过分析SA企业在影响生产线人工效率的4个主要问题：生产线平衡率低、产品转换造成停线时间过长、作业员技能单一造成操作不熟练以及无绩效考核制度带来作业员工作不积极，提出了以下解决方案：通过工业工程流程改善ESCRI五大手法提高生产线平衡率，减少正常生产时员工的等待浪费；制定生产线产品转换标准作业流程降...SA enterprise is the manufacturer of UPS and Cooling products at Xiamen. With salary increase for the workers, keen competition on total manufacturing cost with “brother” enterprises, SA need to improve direct labor efficiency,reduce labor cost and overhead cost with the result of total manufacturing cost decrease, this will contribute to the improvement of competition ability for SA. Improving di...学位：工商管理硕士院系专业：管理学院工商管理教育中心（MBA中心）_工商管理硕士(MBA)学号：1792007115060

试验场载荷特征分析与标准化方法研究

In view of the problem that the collection of vehicle load must be completed after the prototype car is completed,and the necessary load data are often lacking in the product development stage,the standardization of load spectrum under the endurance criterion of the proving ground is studied in this paper.Firstly,the characteristics of the measured load spectrum of different vehicle types in a domestic proving ground are analyzed,and the consistency of the frequency distribution of rainflow cycles for different vehicle types is clarified.Furthermore,the validity of the traditional probability distribution model and the extreme value distribution model in the rainflow cycle modeling is compared by synthesizing the difference of load frequency distribution and damage interval distribution.Through load frequency and damage distribution,the rationality of the exceeding threshold distribution model in load modeling is verified.Finally,the standardized load model of the proving ground is established by normalizing the loads of different types of vehicles.The validity and rationality of the standardized load model are verified by comparing the rainflow cycle,pseudo-damage and fatigue life of the standardized load spectrum with the measured load spectrum in proving grounds.The standardized load spectrum and load spectrum standardization method can provide accurate and effective load data for new vehicle in the early development stage,so as to ensure product reliability and durability level