The Standard Time Formulation Of Electrical Cabinet Pre-assembly Process In B Company Based On Work Study

The formulation of standard time is one of basic work of production management.It is the main basis of enterprise theory of cost accounting and reasonable production plan,as well as the important basis of productivity improving and workers' work achievement evaluation.With the development of society and the growing economic,People's demand for transportation is also growing.At present,the EMU is one of main means of transportation in our country,so it bears great responsibility.The production pattern of EMU production enterprises is generally engineering to order(ETO).More manual work,complex operation,long production cycle,and random variation order can result in production management complexity.As a fundamental work of production management,time quota is also facing great pressure.But the research for time quota of ETO is rare.Time quota efficiency and precision of traditional methods is difficult to guarantee in this type enterprise,which can seriously hinder the enterprise production management level from improving.Thus,the standard time of EMU manufacturing enterprises need more scientific,efficient and effective way to formulate.In this paper,production team of electrical cabinet pre-assembly area is the main study object.Taking the 110 V control box assembly process for example and using work study methods and techniques,namely“5W1H”and four major “ECRS” principles,processes analysis and so on to Optimize production process and operation method.Then the process was divided into common minimum process unit according to process similarity,distinguishing Immutable operating unit and variable operating unit.As for the first type,stopwatch method is used to measure and calculate standard time.About the second type,Standard working hour model is developed by means of regression methods.In the end,the standard working hours of each operating unit of 110 V control box is worked out.Comparing calculated results and spot value can prove the feasibility and accuracy of the method of the paper.Refering to Predetermined Time System(PTS),the standard time of other types of electrical cabinets can be worked out according to the repeat times of basic units.This method can solve the problems of decomposition granularity of the traditional method of standard working hours formulation too little and complex process of time quota.It not only helps companies to work out standard time quickly,scientifically,accurately,but also contributes to improving production efficiency and arranging the team members reasonably.