Assembly process model

Based on his original Model A design first manufactured inthe Model T took five years to develop. Its creation inaugurated what we know today as the mass production assembly line. This revolutionary idea was based on the concept of simply assembling interchangeable component parts.

The need for a better productivity of system engineering teams, as well as a better quality of products motivates the development of solutions to adapt methods to the project situation at hand.

This is known as situational method engineering. In this paper we propose a generic process model to support the construction of a new method by assembling method chunks generated from different methods that are stored in a method base.

The emphasis is on the guidance provided by the process model, as well as on the means underlying guidelines such as similarity measures and assembly operators.

The process model is exemplified with a case study. SME aims at defining information systems development methods by reusing and assembling different existing method fragments.

MODELING AND ANALYSIS OF PROCESS COMPLEXITY AND PERFORMANCE IN MIXED MODEL ASSEMBLY SYSTEMS by Andres G. Abad A dissertation submitted in partial fulfillment. Process Model (APM), to guide the assembly of method chunks using different strategies depe nding on the type of situation in which the assembly activity has to be carried out. An assembly line is a manufacturing process (often called a progressive assembly) in which parts (usually interchangeable parts) are added as the semi-finished assembly moves from workstation to workstation where the parts are added in sequence until the final assembly is produced. By mechanically moving the parts to the assembly work and.

The objective of our work is to propose a complete approach for method engineering based on a method chunk assembly technique. In this paper we are dealing with the method chunk assembly process. We present a generic process model, the Assembly Process Model APMto guide the assembly of method chunks using different strategies depending on the type of situation in which the assembly activity has to be carried out.

A process meta-model is an abstraction of different process models, i. Following this meta-model, a process model is presented as a map and a set of associated guidelines. Such representation of the process model allows us to provide a strategic view of different processes.

Indeed, this view tells what can be achieved - the intention, and which strategy can be employed to achieve it. We separate the strategic aspect from the tactical aspect by representing the former in the method map and embodying the latter in the guidelines.

By associating the guidelines with the map, a smooth integration of the strategic and the tactical aspects is achieved. This paper is organised as follows: Section 5 illustrates the approach with an example demonstrating the process step by step. Section 6 draws some conclusions around our work.

We found cases quite different where elements to assemble are overlapping. This led us to the identification of two assembly strategies: As shown in Figure 1, the first strategy is relevant when the method chunks to assemble do not have elements in common. This might occur when the end product of one chunk is used as a source product by the second chunk.

For example, the chunk producing use cases and the chunk constructing the system object structure can be assembled to get a method with a larger coverage than any of the two initial ones. The assembly process is therefore mainly dealing in making the bridge.

The second strategy is relevant to assemble chunks that have similar engineering objectives but provide different ways to satisfying it. In such a case, the process and product models are overlapping and the assembly process consists in merging overlapping elements. The integration strategy will be necessary, for example, to assemble two different chunks dealing both with a use case model construction.

These two strategies are embedded in the APM presented in section 4. Strategies to assemble method chunks The assembly of method chunks is a means, a technique to construct a method in a reuse driven fashion.

However, method construction is not restricted to chunk assembly. It includes, for example, the elicitation of requirements for the method to construct, amend or enhance.

Besides, the ways the assembly technique will be used differ depending of the objective assigned to the situational method engineering project.

There are many different reasons for constructing a new method.Download the Pattern and Assembly Guide of Lofty Paper Model from Bob the Builder Lofty the crane from Bob the Builder paper model/papercraft pattern and build instruction. This shopping feature will continue to load items.

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In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. Best Practices for Assembly Loading. 03/30/; 11 minutes to read Contributors.

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An Assembly Process Model for Method Engineering C1 C2 C1 C2 Association strategy Integration strategy Fig.

1. Strategies to assemble method chunks The assembly of method chunks is a means, a technique to construct a method in a reuse driven fashion. . Assembly Line Process Improvement I was tasked with with recommending the production configuration for a low volume, variable product, assembly line ( .

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