Design for Manufacture Using a CAD/CAM System—A Methodology for Turned Parts

1983 ◽  
Vol 197 (3) ◽  
pp. 187-195 ◽  
Author(s):  
J C S Plummer ◽  
R G Hannam
Keyword(s):  
Design Process ◽  
Machine Tools ◽  
Software Package ◽  
Design Methodology ◽  
Raw Material ◽  
Design Stage ◽  
Design For Manufacture ◽  
System A ◽  
Cad Cam ◽  
Turned Parts

This paper describes a design methodology which has been developed to ensure that turned parts are designed for manufacture. The methodology has been incorporated in a software package which is used interactively on a CAD/CAM system. The methodology ensures that the choices offered to a designer during the design stage are such that turned parts can be produced to company standards using the manufacturing facilities available. The software package automatically selects the necessary raw material, the appropriate tool assemblies, and the necessary machine tools required to manufacture each component as its design process is carried out.

Forging a Geometric Link Between Function-Based Design and DfM

2002 ◽  
Author(s):  
Manish Verma ◽  
Hui Dong ◽  
William H. Wood
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Design Stage ◽  
Direct Connection ◽  
Functional Modeling ◽  
Small Space ◽  
Design Decisions ◽  
Design For Manufacture ◽  
Part Geometry ◽  
Conceptual Design Stage

Design for Manufacture (DfM) tends to explore only a small space of possible designs toward improving manufacturability. By focusing primarily on detailed geometry, DfM tends to recommend incremental changes. This paper presents a methodology that begins at the conceptual design stage, applying functional modeling to the generation of design configurations. These functional abstractions are merged with real part geometry toward generating potentially manufacturable design skeletons. The direct connection from function to manufacturable form afforded by this method allows the designer to make better-informed design decisions at the earliest stages of the design process.

The Product Model as a Central Information Source in a Shipbuilding Environment

1996 ◽  
Vol 12 (02) ◽  
pp. 99-106
Author(s):  
Kaj Johansson
Keyword(s):  
Design Process ◽  
Information Source ◽  
Product Model ◽  
Model Concept ◽  
Structure Information ◽  
System A ◽  
Cad Cam ◽  
Engineering Information ◽  
Definition Of ◽  
Productivity And Competitiveness

In a shipbuilding CAD/CAM system a product model is successively built up during the design process, with geometric as well as nongeometric information. In parallel with the design process, the model is further extended with work preparation (in some countries called production engineering) information, e.g., definition of building strategy and definition of the assembly structure. Information needed for part fabrication can be derived from the model, such as drawings, parts lists and information for numerically controlled (NC) equipment. When work preparation definitions are combined with a product model, the information needed for assembly parts lists, assembly drawings, etc. can be derived from the product model instead of being created manually. Use of the product model concept, systems based upon it and procedures implementing it in an organization will allow a reduction of costs and an increase in productivity and competitiveness

scholarly journals Design and Properties of Octaslide Redundant Parallel Kinematics

10.14311/568 ◽  
2004 ◽  
Vol 44 (3) ◽  
Author(s):  
V. Bauma ◽  
M. Valášek ◽  
Z. Šika
Keyword(s):  
Mechanical Properties ◽  
Machine Tool ◽  
Conceptual Design ◽  
Design Process ◽  
Machine Tools ◽  
Design Methodology ◽  
Parallel Kinematics ◽  
Parallel Kinematics Machines ◽  
Redundantly Actuated ◽  
Five Axis

This paper describes the conceptual design process of OCTASLIDE redundant parallel kinematics for a machine tool. Redundantly actuated parallel kinematics is a recently developed new concept for machine tools. It enables all mechanical properties of machine tools to be improved several times simultaneously. This is particularly demonstrated on the design of the OCTASLIDE. This is a concept of a five-axis machine tool centre. The paper describes the critical initial design phases and the accessible mechanical properties. The design process has follow the newly developed design methodology for parallel kinematics machines.

scholarly journals KBE Application for the Design and Manufacture of HSM Fixtures

10.14311/698 ◽  
2005 ◽  
Vol 45 (3) ◽  
Author(s):  
J. Ríos ◽  
J. V. Jiménez ◽  
J. Pérez ◽  
A. Vizán ◽  
J. L. Menéndez ◽  
...  
Keyword(s):  
Design Process ◽  
High Speed ◽  
Ad Hoc ◽  
Relevant Information ◽  
Numerical Control ◽  
Raw Material ◽  
Design System ◽  
Development Environment ◽  
Cad Cam ◽  
Machining Fixtures

The design of machining fixtures for aeronautical parts is strongly based in the knowledge of the fixture designer, and it comprises certain repetitive tasks. An analysis of the design process allows us to state its suitability for developing Knowledge Based Engineering (KBE) applications in order to capture the knowledge, and to systematize and automate the designs.This work justifies the importance of fixtures for High Speed Milling (HSM), and explains the development of a KBE application to automate the design and manufacturing of such elements. The application is the outcome of a project carried out in collaboration with the company EADS.In the development process, a specific methodology was used in order to represent the knowledge in a semi-structured way and to document the information needed to define the system. The developed KBE application is independent of the parts design system. This makes it necessary to use an interface to input the part geometry into the KBE application, where it is analyzed in order to extract the relevant information for the fixture design process. The results obtained from the application come in three different ways: raw material drawings, fixture 3D solid models, and text files (Bill Of Materials – BOM, and Numerical Control – NC programs). All the results are exported to other applications for use in other tasks. The designer interacts with the application through an ad hoc interface, where he is asked to select or input some data and where the results are also visualized. The prototype KBE application has been carried out in the ICAD development environment and the main interface is with the CAD/CAM system CATIA V4. 

Product Modeling, Evaluation and Validation at the Detailed Design Stage

2011 ◽  
Author(s):  
Cristian Iorga ◽  
Alain Desrochers
Keyword(s):  
Product Development ◽  
Design Process ◽  
Design Stage ◽  
Product Modeling ◽  
Specific Product ◽  
Development Processes ◽  
Product Variation ◽  
Process Methodology ◽  
Capstone Projects ◽  
Short Time

The expansion of the markets corroborated with product customization and short time to launch the product have led to new levels of competition among product development companies. To be successful in the globalization of the markets and to enable the evaluation and validation of products, companies have to develop methodologies focused on lifecycle analysis and reduction of product variation to obtain both quality and robustness of products. Keywords: Modeling, Evaluation, Validation, Design ProcessThis paper proposes a new design process methodology that unifies theoretical results of modeling stage and empirical findings obtained from the validation stage. The evaluations and validations of engineering design are very important and they have a high influence on product performances and their functionality, as well on the customer perceptions.Given that most companies maintain the confidentiality of their product development processes and that the existing literature does not provide more detailed aspects of this field, the proposed methodology will represent a technical and logistical support intended for students or engineers involved in academic as well as industrial projects.A generic methodology will be refined based on a new approach that will take into consideration the specification types (quantitative or qualitative), the design objectives and the product types: new/improved, structural/esthetic. Hence the new generic methodology will be composed of specific product validation algorithms taking into account the above considerations. At the end of this paper, the improvements provided by the proposed methodology into the design process will be shown in the context of the engineering student capstone projects at the Université de Sherbrooke.

scholarly journals Energy Rating of Buildings to Promote Energy-Conscious Design in Israel

Buildings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 59
Author(s):  
Abraham Yezioro ◽  
Isaac Guedi Capeluto
Keyword(s):  
Design Process ◽  
Architectural Design ◽  
Residential Building ◽  
Green Building ◽  
Energy Performance ◽  
Basic Unit ◽  
Design Stage ◽  
Design Decision ◽  
Rating Systems ◽  
New Buildings

Improving the energy efficiency of existing and new buildings is an important step towards achieving more sustainable environments. There are various methods for grading buildings that are required according to regulations in different places for green building certification. However, in new buildings, these rating systems are usually implemented at late design stages due to their complexity and lack of integration in the architectural design process, thus limiting the available options for improving their performance. In this paper, the model ENERGYui used for design and rating buildings in Israel is presented. One of its main advantages is that it can be used at any design stage, including the early ones. It requires information that is available at each stage only, as the additional necessary information is supplemented by the model. In this way, architects can design buildings in a way where they are aware of each design decision and its impact on their energy performance, while testing different design directions. ENERGYui rates the energy performance of each basic unit, as well as the entire building. The use of the model is demonstrated in two different scenarios: an office building in which basic architectural features such as form and orientation are tested from the very beginning, and a residential building in which the intervention focuses on its envelope, highlighting the possibilities of improving their design during the whole design process.

Professionals freaking out: the case of accreditation in Dutch higher education

2009 ◽  
Vol 21 (5) ◽  
pp. 473-485 ◽  
Author(s):  
Everard van Kemenade ◽  
Teun W. Hardjono
Keyword(s):  
The Netherlands ◽  
Design Methodology ◽  
Iso 9000 ◽  
Preliminary Survey ◽  
External Evaluation ◽  
Content Type ◽  
Evaluation Systems ◽  
System A ◽  
Engineering And Technology ◽  
Insight Into

PurposeThe purpose of this paper is to define what factors cause willingness and/or resistance among lecturers in universities towards external evaluation systems, especially accreditation.Design/methodology/approachA model has been designed to describe possible factors of willingness and/or resistance towards accreditation based on Ajzen and Metselaar. A literature review has been undertaken on the effects of external evaluation like ISO 9000 as well as accreditation systems such as Accreditation Board for Engineering and Technology and European Quality Improvement System. A questionnaire has been administered to a group of 63 lecturers from three departments at Fontys University in The Netherlands. The results of this preliminary survey have been presented to 1,500 academics in The Netherlands and Flanders to collect empirical data.FindingsResistance to accreditation can be found in the consequences of accreditation for the work of the lecturer (workload), negative emotions (stress and insecurity); the lack of knowledge and experience (help from specialists is needed); and lack of acceptance (other paradigm).Originality/valueThe paper provides more insight into the difficulties that organizations, especially universities, have to commit their employees to external evaluation. It might be possible to generalize the findings to other professionals in other organizations. Little research in this field has been undertaken so far.

Design Methodology of Laminating Tools

2014 ◽  
Vol 657 ◽  
pp. 121-125
Author(s):  
Daniel Măgurian ◽  
Gheorghe Oancea
Keyword(s):  
Software Package ◽  
Design Methodology ◽  
Software Tool ◽  
Design Time ◽  
Standard Design ◽  
Automotive Interior ◽  
Main Frame

This paper presents a design methodology of laminating tools for automotive interior parts using CATIA software package. The authors developed a software tool namedLTFrameDesignusingVBA for Applicationunder CATIA package, which automatically generates the main frame of the laminating tool according to the parts shapes, its dimensions and designer requirements. The software automates some stages of standard design and minimizes the design time and costs. The paper also presents the design stages which are followed by the user to obtain a 3D complete assembly of the laminating tool.

Sensor e-textiles: person centered co-design for people with late stage dementia

2016 ◽  
Vol 20 (2) ◽  
pp. 76-85 ◽  
Author(s):  
Cathy Treadaway ◽  
Gail Kenning
Keyword(s):  
Design Process ◽  
Late Stage ◽  
Design Methodology ◽  
Design Research ◽  
Family Members ◽  
Sensory Properties ◽  
Content Type ◽  
People With Dementia ◽  
Grounded Practical Theory ◽  
The Moment

Purpose – The purpose of this paper is to present design research investigating the development of sensory textiles with embedded electronics to support the wellbeing of people with late stage dementia in residential care. Design/methodology/approach – The research presented is qualitative and uses a mixed method approach informed by grounded practical theory and positive design methodologies. It uses an inclusive and participatory co-design process involving people with dementia and their families with an interdisciplinary team of experts. Findings – Both the co-design process and the artefacts developed have been beneficial in supporting wellbeing. The textile artefacts have been found to soothe, distract and comfort people with dementia. They have also been shown to facilitate in the moment conversational bridges between family members and carers with persons with dementia. Research limitations/implications – The findings are based on a small cohort of participants, observational reports and descriptive accounts from family members and carers. Practical implications – The paper proposes ways in which simple hand-crafted textiles can be used beneficially to support the wellbeing of people with late stage dementia. It provides examples of how technology can be used to personalise and extend the sensory properties of the artefacts created. Social implications – It promotes an inclusive co-design methodology involving care professionals, carers and people with dementia with designers and technologists. Originality/value – The paper describes new ways of extending sensory properties of textiles through the integration of technology.

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