A Feature Library as a Process Planners ’ Knowledge Managem

In manufacturing, features can simply be defined as a geometric shape and its corresponding manufacturing information to create the intended shape. For the generation of process plans based on manufacturing feature, it is normal to expect that the correspo

IJCSNS International Journal of Computer Science and Network Security, VOL.7 No.5, May 2007

127

A Feature Library as a Process Planners’ Knowledge Management

System

Hendry Muljadi , Hideaki Takeda and Koichi Ando ,

Transdisciplinary Research Integration Center, Research Organization of Information & Systems, Tokyo, Japan

National Institute of Informatics, Tokyo, Japan

Department of Information Science & Engineering, Shibaura Institute of Technology, Tokyo, Japan

Summary

In manufacturing, features can simply be defined as a Computer Aided Process Planning (CAPP) has emerged as a geometric shape and its corresponding manufacturing means to support human effectively to generate process information to create the intended shape. For the generation plans, and has been a research topic for over 35 years [5]. of process plans based on manufacturing feature, it is normal CAPP system offers the ability to integrate Computer Aided to expect that the corresponding manufacturing information Design (CAD) system and Computer Aided Manufacturing will reflect the knowledge of process planners. This paper (CAM) system. In order to allow the CAD system to proposes a feature library that is able to manage the interface with the CAPP system, feature technology has knowledge of process planners. By enabling the emerged as the enabling technology to convert CAD product management of the knowledge of process planners, the data to manufacturing information [6]. Feature recognition is proposed feature library may be useful to support the considered as a front-end of process planning. Many generation of process plans. In this paper, the different approaches have been developed to extract features implementation of Semantic Wiki for the development of the from the CAD product data [7], [8]. However, the prototype feature library is described. manufacturing information typically used in process

planning is rarely incorporated into feature recognition [9].

Key words: Manufacturing feature, Feature library, Feature ontology, In manufacturing, features can simply be defined as a Semantic Wiki, Process planning geometric shape and its corresponding manufacturing

information to create the intended shape. As manufacturing features are used to generate process plans, it is normal to

1. Introduction expect that the corresponding manufacturing information

will reflect the knowledge of process planners. In other

In the competitive worldwide manufacturing market, smooth

words, for the generation of process plans, it is necessary to

integration of design and manufacturing is critical for

develop a feature library that is able to manage the

manufacturer survival. One of the most important link for

knowledge of process planners. In this paper, a feature

design and manufacturing integration is process planning [1].

library that is able to manage the knowledge of process

Process planning comprises in details the selection and

planners is proposed. Semantic Wiki is used for the

sequencing of processes and operations to transform raw

development of the proposed feature library.

material into the desired form. Process planning also plays

an important role in the management of an enterprise, since

The structure of this paper is as follows. In section 2, the

almost any industrial inquiry concerning the manufacturing

role of feature library in process planning is discussed.

process such as floor space, due dates, lead time, work in

Section 3 describes the structure of the feature library. The

process, etc, addresses process planning as the data source

implementation of Semantic Wiki for the development of the

[2].

prototype feature library is presented in section 4. Section 5

states the conclusion of this paper.

In order to generate process plans, process planners must

possess a variety of skills and knowledge. They must possess

2. The role of feature library in process the ability to interpret engineering drawings, the knowledge

planning of materials for manufacture, the knowledge of

manufacturing processes, the knowledge of jigs and fixtures,

2.1. Organizing the manufacturing knowledge etc [3]. Manual process planning is time consuming, labor

intensive, and may involve human errors [4].

Manuscript received May 14, 2007

Manuscript revised May 20, 2007

In manufacturing, features can simply be defined as a geometric shape and its corresponding manufacturing information to create the intended shape. For the generation of process plans based on manufacturing feature, it is normal to expect that the correspo

Manufacturing features can be associated with manufacturing process models, and process models can be associated with manufacturing resources, such as machines, tools, etc [10]. Linking manufacturing features, process models and resource models may lead to the manufacturing knowledge repository organization [11]. Fig.1 illustrates a feature-based manufacturing knowledge repository. In this paper, the feature-based manufacturing knowledge repository is called the feature library.

2.2. Managing the knowledge of process planners

Process planning also involves deciding the sequence of manufacturing operations for manufacturing a part [12]. A feature library can be useful to manage the knowledge of process planners in a higher degree compare to the existing feature …… 此处隐藏：20232字，全部文档内容请下载后查看。喜欢就下载吧 ……