On Implementing an Integrated Design-Manufacturability Assessment Environment

1991 ◽  
Author(s):  
Yuh-Min Chen ◽  
R. Allen Miller ◽  
K. Rao Vemuri
Keyword(s):  
Integrated Design ◽  
Design Environment ◽  
Levels Of Abstraction ◽  
Part Geometry ◽  
Knowledge Based ◽  
Cad Cam ◽  
High Level ◽  
Assessment Environment ◽  
Cam Systems ◽  
Part Model

Abstract Due to the incomplete representation schemes and the lack of high-level reasoning capability of current CAD/CAM systems, manufacturability assessment is performed by experienced designers and manufacturing engineers. The problems associated with automating manufacturing assessment include (1) the integration of a knowledge based environment within a design environment to provide reasoning capability, and (2) the development of flexible, modularized and responsive part models with levels of abstraction to support high-level reasoning which is required. Since modification of part geometries are frequently made during manufacturability assessment, the capability for part geometry modification is required at the level of interacting procedures. Consistency problems therefore occur between the geometric database in design environment and the part model in knowledge based environment. This paper presents a framework for an integrated design and manufacturability assessment environment which address these concerns.

Knowledge Based Expert Systems for CAD/CAM Experience of an EDM Application

1993 ◽  
Author(s):  
D. Kiritsis ◽  
Michel Porchet ◽  
L. Boutzev ◽  
I. Zic ◽  
P. Sourdin
Keyword(s):  
Natural Language ◽  
System Development ◽  
Constraint Propagation ◽  
Programming Environment ◽  
Knowledge Based ◽  
Natural Language Programming ◽  
Cad Cam ◽  
The One ◽  
Rule System ◽  
Cam Systems

Abstract In this paper we present our experience from the use of two different expert system development environments to Wire-EDM CAD/CAM knowledge based application. The two systems used follow two different AI approaches: the one is based on the constraint propagation theory and provides a natural language oriented programming environment, while the other is a production rule system with backward-forward chaining mechanisms and a conventional-like programming style. Our experience showed that the natural language programming style offers an easier and more productive environment for knowledge based CAD/CAM systems development.

scholarly journals Implementation of integrated design systems in the learning process

2021 ◽  
pp. 71-75
Author(s):  
A. V. Petukhov
Keyword(s):  
Integrated Design ◽  
Educational Process ◽  
Automated Systems ◽  
Cad Systems ◽  
Control Programs ◽  
Design Engineers ◽  
Stage Of Development ◽  
Technological Preparation ◽  
Cad Cam ◽  
Cam Systems

The modern stage of development of CAD-systems is characterized by a significant expansion of the scope of their use. An interesting direction for improving CAD systems is their integration with CAM systems. One of the main tasks solved by CAM systems is the development of control programs for CNC machines. Many software developers for automation of design and technological preparation of production have already equipped their systems with appropriate modules. These circumstances pose an urgent task for higher educational institutions to introduce the study of integrated CAD/CAM systems into the educational process of training design engineers. In this case, the emphasis should be placed on the practical mastery of the skills of developing control programs using a 3D-model of the manufactured part. The stages of preparation for the implementation of the system are described, starting with the analysis of the market of necessary software products and ending with the adaptation of the licensed system to the conditions of use in the educational process of the university. A link is given to the description of the methodology used in the assessment of automated systems at the stage preceding the tender for their purchase. It is emphasized that the study of the possibility of using a CAD/CAM system in the preparation of design engineers was carried out by students during the course and diploma projects in the discipline “Automated systems for technological preparation of production”. The methodology for designing control programs used by students is given, and the results obtained are assessed.

A Framework for Feature Based Part Modeling

1991 ◽  
Author(s):  
Yuh-Min Chen ◽  
R. Allen Miller ◽  
K. Rao Vemuri
Keyword(s):  
Geometric Reasoning ◽  
Geometric Information ◽  
Cad System ◽  
Knowledge Based ◽  
Modeling Environment ◽  
Cad Cam ◽  
Feature Based ◽  
High Level ◽  
Feature Based Design ◽  
Part Modeling

Abstract To increase the capabilities and intelligence of CAD/CAM systems, a feature based modeling environment, integrated with a knowledge based environment, is under development utilizing a commercial CAD system. This environment allows designers to model parts with features, and provides high-level part models to support geometric reasoning in manufacturing assessment and related functions. Two fundamental issues have been considered: (1) What kind of information is required to specify a part and to support reasoning about the part in a wide variety of applications?, and (2) How can the results serve the geometric reasoning needs of the various engineering applications which need geometric information about the part? This paper will discuss the information required for defining net shaped parts (parts to be manufactured by net shape processes), a framework for a feature based modeling environment, the procedures for feature based design, and the construction of high-level (semantic) pan models suitable for geometric reasoning in a knowledge based environment.

Functional descriptions used in computer support for qualitative scheme generation—“Schemebuilder”

1996 ◽  
Vol 10 (4) ◽  
pp. 333-345 ◽  
Author(s):  
R.H. Bracewell ◽  
J.E.E. Sharpe
Keyword(s):  
Product Development ◽  
Information Structure ◽  
Rapid Development ◽  
Software Tools ◽  
Main Theme ◽  
Design Environment ◽  
Knowledge Based ◽  
Starting Point ◽  
Development Approach ◽  
High Level

AbstractWith increased pressures coming from global competition and requirements for greater innovation in product development, designers are hard pressed to deliver designs of higher quality and variety using a repertoire of technological options from different disciplines. This interdisciplinary product development approach has not only removed many of the traditional constraints to design but has now given designers a much wider freedom of choice as to the best solution to a design problem. The focus of this paper is a knowledge-based design environment called Schemebuilder, which is a comprehensive and integrated suite of software tools aimed at supporting the designer in the rapid development of product design models in the conceptual, through embodiment stages of design. Illustrated is the use of the software tools in the qualitative generation of alternative schemes, by application of stored working and decomposition principles in the development of a function-means tree-like information structure. With mechatronic product development as the main theme, this paper describes a closely integrated methodology that incorporates a bond graph approach to continuous-time energetic systems and high-level Petri nets for the rigorous description of discrete-time information systems. Additionally, a technique is suggested for the decomposition of free format statements of need into the rigorously defined design context and required functions, which form the starting point of the function-means development process.

Parting Direction and Parting Planes for the CAD/CAM of Plastic Injection Molds

1997 ◽  
Author(s):  
Kiyoshi Urabe ◽  
Paul K. Wright
Keyword(s):  
Computer Aided Design ◽  
Concurrent Design ◽  
Design Environment ◽  
Part Geometry ◽  
Molded Part ◽  
Mold Making ◽  
Cad Cam ◽  
Parting Direction ◽  
Aided Design ◽  
Plastic Injection

Abstract We describe a plastic injection mold making agent that is part of a domain unified computer-aided design environment. This environment enables concurrent design of the “to-be-molded” part, by facilitating communication between electrical and mechanical engineering CAD tools. Once the design is completed and certain constraints are satisfied, the design is passed to the mold making agent. After the designer inputs some mold parameters, the mold agent automatically determines the parting direction and parting plane, and generates the mold halves. This is achieved by applying a set of heuristic rules on the part geometry. These rules, design constraints, and methods used to generate the mold are discussed. Resulting mold halves have been fabricated on a 3 axis milling machine using CAD / CAPP / CAM tools described in this paper. Examples of aluminum molds and sample output from the mold making agent are presented.

Graphical Modeling Environment and Supporting Framework for Function-Based Conceptual Design

2004 ◽  
Author(s):  
Janis P. Terpenny ◽  
Deepu Mathew
Keyword(s):  
Conceptual Design ◽  
Knowledge Exchange ◽  
Conceptual Modeling ◽  
Integrated Design ◽  
Design Environment ◽  
Graphical Modeling ◽  
Knowledge Based ◽  
Modeling Environment ◽  
University Of Massachusetts ◽  
The Cost

As engineering products become more complicated, collaboration among multi-disciplinary design teams that are separated by location, time and across organizations is becoming an increasingly difficult task. To be effective, collaboration requires exchanging, interpreting and integrating knowledge in various locations. According to a recent study, the cost of this breakdown in knowledge in the automotive industry alone is at least $1 billion per year. There has been a significant amount of research in recent years to improve the accessibility of knowledge during design. Very little has, however, been invested in format, flow and relationships of knowledge to support the process of collaborative distributed design. Progress is particularly lagging for early stages of engineering design, conceptual design, when the need for and payoff of knowledge exchange is the greatest. This paper presents the Integrated Design Environment that is being developed at the Systems Modeling And Realization Technologies (SMART) Lab at the University of Massachusetts, Amherst. This environment facilitates knowledge flow, knowledge capture and reuse with a generalized graphical modeling environment for conceptual modeling and synthesis. The paper first provides a background in conceptual design and knowledge-based engineering followed by an architectural view of the environment and finally an example problem based on the design of a coffee maker to facilitate discussion.

The Impact of Deep Learning on the Semantic Machine Learning Representation

2021 ◽  
pp. 22-49
Author(s):  
Abdul Kader Saiod ◽  
Darelle van Greunen
Keyword(s):  
Artificial Intelligence ◽  
Machine Learning ◽  
Big Data ◽  
Deep Learning ◽  
Heterogeneous Data ◽  
Levels Of Abstraction ◽  
Knowledge Based ◽  
Data Representations ◽  
High Level ◽  
The Impact

Deep learning (DL) is one of the core subsets of the semantic machine learning representations (SMLR) that impact on discovering multiple processing layers of non-linear big data (BD) transformations with high levels of abstraction concepts. The SMLR can unravel the concealed explanation characteristics and modifications of the heterogeneous data sources that are intertwined for further artificial intelligence (AI) implementations. Deep learning impacts high-level abstractions in data by deploying hierarchical architectures. It is practically challenging to model big data representations, which impacts on data and knowledge-based representations. Encouraged by deep learning, the formal knowledge representation has the potential to influence the SMLR process. Deep learning architecture is capable of modelling efficient big data representations for further artificial intelligence and SMLR tasks. This chapter focuses on how deep learning impacts on defining deep transfer learning, category, and works based on the techniques used on semantic machine learning representations.

Collaborative Environment Development for the Supported CAD/CAM

2008 ◽  
Vol 594 ◽  
pp. 452-460
Author(s):  
Jian Jun Su ◽  
Xiao Ping Liao ◽  
Xiao Rong Zhou ◽  
Shuang Fei Wang
Keyword(s):  
Product Design ◽  
Process Planning ◽  
Integrated Design ◽  
Object Oriented Programming ◽  
Detailed Knowledge ◽  
Individual Object ◽  
Knowledge Based ◽  
Collaborative Environment ◽  
Cad Cam ◽  
Knowledge Intensive

Collaborations abstract the interactions among a group of objects above the level of an individual object-oriented programming (OOP) message send for an integrated design/manufacture process, they can realize information share and system integration, and can be viewed as a type of systematic approach. This paper proposes the collaborative mode in the interior of an enterprise and among enterprises and a novel knowledge-based intensive CAD/CAM framework for collaborative environment development, which integrates product design, design for process planning, NC codes auto-generation and manufacturing simulation. A unified class of knowledge intensive data structures is defined using the blackboard and OO knowledge-based approach for handling both the design and the process planning problems. The detailed knowledge-intensive framework with integration of multi-cooperative knowledge sources and software is given. Thus, product design, process planning and NC codes auto-generation can be carried out simultaneously and collaboratively in an entirely computer-aided collaborative environment.

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