Machining Operation Process Planning System Considering User Strategies and Intentions

2017 ◽  
Author(s):  
Taishi Hirai ◽  
Isamu Nishida ◽  
Ryuta Sato ◽  
Keiichi Shirase
Keyword(s):  
Process Planning ◽  
Planning System ◽  
Planning Systems ◽  
Geometrical Properties ◽  
Operation Process ◽  
Planning Approach ◽  
Process Planning System ◽  
The Individual ◽  
Machining Operations

In this study, we propose a new process planning system for machining operations, one which considers user strategies and intentions for such operations. In previous process planning systems, the machining sequence is calculated geometrically, based on the Total Removal Volume (TRV) and the machining primitive region split from TRV. However, it remains difficult to determine the best machining sequence from among the large number of machining sequences calculated. Also, previous process planning systems do not consider user strategies and intentions in determining the appropriate machining sequence. Our new approach stores geometrical properties of the machining primitives when the user selects a machining sequence. Using these stored geometrical properties, the appropriate machining sequence can be automatically selected. User strategies and intentions are thus considered in determining a machining sequence based on learned geometrical properties. A case study was conducted to show the effectiveness of our proposed process planning approach. In the case study, user-specific machining sequences were automatically determined for various users, based on the relation among the geometrical properties of the machining primitives and the individual user’s strategies and intentions.

A Feature-Based Process Planning Approach for Fineblanking-Forming-Stamping Parts

2011 ◽  
Vol 308-310 ◽  
pp. 816-819 ◽  
Author(s):  
Yi Lin Wang ◽  
Hui Cai Long
Keyword(s):  
Process Planning ◽  
Feature Modeling ◽  
Feature Representation ◽  
Planning System ◽  
Forming Process ◽  
Design Efficiency ◽  
Knowledge Based ◽  
Planning Approach ◽  
Process Planning System ◽  
Feature Based

A feature-based process planning approach for fineblanking-forming-stamping parts is discussed in this paper. To reduce the dependence of experience designers and improve the design efficiency and quality, a prototype of feature-based process planning system has been established. The system consists of four major modules: forming process recognition, feature representation, operation sequence design and parametric feature modeling. The graph-based process recognition and feature representation methods are introduced. The knowledge-based methods are also used for process planning. An application example is illustrated.

OMEGA: An Expert CAPP System

1994 ◽  
Author(s):  
Laurent Sabourin ◽  
François Villeneuve
Keyword(s):  
Expert System ◽  
Process Planning ◽  
Planning System ◽  
Analysis Method ◽  
Machining Features ◽  
Planning Strategy ◽  
Process Planning System ◽  
The Creation ◽  
Machining Operations

Abstract This article presents the validation of a part analysis method for the creation of a process planning system for automobile prototype activity at the PSA group. The methodology presented is founded upon the division of the problem into two semi-separate sub-fields. The first consists in automatically defining the operation sequences, by the association between functional and machining features. The second one defines the sequencing of machining operations in set ups, founded upon a constraint planning strategy. The methods developed in this article have been implemented as an expert system named OMEGA.

PROCASE: A Prototype of Intelligent Case-Based Process Planning System With Simulation Environment

1993 ◽  
Author(s):  
Hao Yang ◽  
Wen F. Lu
Keyword(s):  
Process Planning ◽  
Planning System ◽  
Simulation Environment ◽  
Rule Based ◽  
Process Plans ◽  
Integrated Methodology ◽  
Process Planning System ◽  
Machining Operations ◽  
User Friendly ◽  
Case Based

Abstract An intelligent case-based process planning system with interactive graphic simulation environment, PROCASE, is developed to demonstrate an integrated methodology of case-based process planning system. In PROCASE, both the mechanical part features and the machining operations are represented with a frame based scheme. PROCASE contains a retriever, a modifier, a simulator and a repairer. It distinguishes itself from traditional rule-based process planning systems by representing the process planning knowledge through previous process planning cases instead of production rules. It therefore can overcome some problems in the traditional rule-based expert systems. PROCASE currently resides in IRIS Indigo workstation. With a user friendly graphic environment, the generated process plans can be demonstrated vividly. This simulation environment not only serves as a good assistance in debugging, but also helps the user to be convinced of the outcomes of the reasoning of PROCASE.

Applications of Software Engineering to Manufacturing Process Planning

2008 ◽  
Vol 8 (3) ◽  
Author(s):  
V. Sundararajan ◽  
Paul K. Wright
Keyword(s):  
Software Development ◽  
Process Planning ◽  
Tool Path ◽  
Numerical Control ◽  
Planning System ◽  
Cnc Milling ◽  
Design Development ◽  
Tool Selection ◽  
Process Planning System ◽  
New Algorithms

Agile methods of software development promote the use of flexible architectures that can be rapidly refactored and rebuilt as necessary for the project. In the mechanical engineering domain, software tends to be very complex and requires the integration of several modules that result from the efforts of large numbers of programmers over several years. Such software needs to be extensible, modular, and adaptable so that a variety of algorithms can be quickly tested and deployed. This paper presents an application of the unified process (UP) to the development of a research process planning system called CyberCut. UP is used to (1) analyze and critique early versions of CyberCut and (2) to guide current and future developments of the CyberCut system. CyberCut is an integrated process planning system that converts user designs to instructions for a computer numerical control (CNC) milling machine. The conversion process involves algorithms to perform tasks such as feature extraction, fixture planning, tool selection, and tool-path planning. The UP-driven approach to the development of CyberCut involves two phases. The inception phase outlines a clear but incomplete description of the user needs. The elaboration phase involves iterative design, development, and testing using short cycles. The software makes substantial use of design patterns to promote clean and well-defined separation between and within components to enable independent development and testing. The overall development of the software tool took about two months with five programmers. It was later possible to easily integrate or substitute new algorithms into the system so that programming resources were more productively used to develop new algorithms. The experience with UP shows that methodologies such as UP are important for engineering software development where research goals, technology, algorithms, and implementations show dramatic and frequent changes.

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