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Ch24-I044963.fm Page 113 Monday, August 7, 2006 11:27 AM
Monday, August 7,2006
11:27 AM
Ch24-I044963.fm
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FLEXIBLE PROCESS PLANNING SYSTEM CONSIDERING DESIGN
INTENTIONS AND DISTURBANCE IN PRODUCTION PROCESS

1 2 1 1 3
G Han M. Koike H. Wakamatsu A. Tsumaya E Araf andK. Shirase
1
Department of Manufacturing Science, Graduate School of Eng., Osaka University
2-1 Yamadaoka, Suite, Osaka, 565-0871, Japan
2
Department of Systems Design, College of Industrial Technology
1-27-1 Nishikoya, Amagasaki, Hyogo, 661-0047, Japan
3
Department of Mechanical Engineering, Faculty of Eng. Kobe University
1-1 Rokkodai,Nada, Kobe, Hyogo, 657-0013, Japan

ABSTRACT

Improvement of machining process planning is an effective way to reduce manufacturing time and cost, and to
achieve the desirable functions which are described by designers. This paper proposes a machining process
planning system which can flexibly perform process planning, considering design intentions and dealing with
disturbances in the manufacturing process by choosing the optimum plans from multiple candidates. The core of
the mechanism consists of (l)Extraction of Total Removal Volume(TRV), (2)Decomposition of the TRV into
Minimum Convex Polyhedrons (MCP) (3)Recomposition of MCPs into feasible manufacturing features
sets(MF set), (4)Recognition of manufacturing feature(MF), (5)Determination of machining sequences by
considering various constraints, and (6)Comparison of each candidate containing a certain MF set and
machining sequence to obtain the most optimum plan. All the functions are realized and implemented on DLL
format compiled in Visual C++ and SolidWorks API.

KEYWORDS

Computer Aided Process Planning, Manufacturing Feature, Machining Sequencing

1. INTRODUCTION

Process planning plays a key role in modem manufacturing. And it provides the functions which translate