Abstract
Generally, Hidden Time Loss exists besides all procedures and thus it has the direct influence on the rate of productivity. In the line of production, the most prominent tool to measure the performance is Overall Equipment Efficiency. Availability of equipment is one of the component to measure Overall Equipment Efficiency to cater the Hidden Time Loss. Though, in manual assembly and semi-automatic assembly procedure, the Overall Equipment Efficiency is not good fit to measure operational performance of assembly procedure. Along the manual assembly and semi-automatic assembly procedures some Hidden Time Loss has occurred particularly when same line of production provides high variety of product. Therefore, the current research introduces the Non-valued Changeover Time as one component of Time Loss Measures in assemble produces. A comprehensive literature analysis is done on the production operations along with the measures of performance to develop the Non-valued Change-over Time structure. Basically, a case study of two companies of automotive manufacturing is used to find the validity of structure of Non-valued Change-over Time. It is concluded that Non-valued Change-over Time is one of the measure of Hidden Time Loss in manual as well as semi-automatic assembly procedures.
Highlights
In the present emerging industries, the primary competitive edge for the manufacturing firms is the product variety to fulfill the varied demands of the customers [1]
The outcome of this study indicated that internal setup has the contribution for time loss because to accomplish it, machine must be stopped
In order to determine the verifications of the results, three conditions are used; (i) Appropriate if greater than fifty percent, the components of initial final including the fundamental items will be in the model of isolation (ii) Appropriate partly if greater than 50 percent, improvement will be observed in the description of components of fundamental items and fundamental items as well. (iii) Not appropriate if greater than fifty percent, components along their fundamental items will not remain in the model of isolation
Summary
In the present emerging industries, the primary competitive edge for the manufacturing firms is the product variety to fulfill the varied demands of the customers [1]. In accordance with Moxham and Greatbanks [11], internal setup is referred as the setup that is executed when the machine is stopped whereas external setup relates to activities that are accomplished during the in-operation machine In this respect, other than the use of resources that are adding value for the end users, all the activities are barely wastage. In accordance with Boysen et al [19], the availability of flexible machinery and workers causes considerable decrease in non-valued Change-over Time for mixed model assembly lines In this situation, various products might be manufactured together in inter-mixed item sequences (one lot size) on similar line. More investigation is needed on NVCOT structure to decide the Hidden Time Loss that occurred by general non-value added activities during changeover procedure
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